From b238290b965f23ac5f8aeb64cd731aef18aa796c Mon Sep 17 00:00:00 2001
From: Neil Spring <ntspring@fb.com>
Date: Mon, 30 Aug 2021 20:33:56 -0700
Subject: bpf: Permit ingress_ifindex in bpf_prog_test_run_xattr

bpf_prog_test_run_xattr takes a struct __sk_buff, but did not permit
that __skbuff to include an nonzero ingress_ifindex.

This patch updates to allow ingress_ifindex, convert the __sk_buff field to
sk_buff (skb_iif) and back, and tests that the value is present from on BPF
program side. The test sets an unlikely distinct value for ingress_ifindex
(11) from ifindex (1), which is in line with the rest of the synthetic field
tests.

Adding this support allows testing BPF that operates differently on
incoming and outgoing skbs by discriminating on this field.

Signed-off-by: Neil Spring <ntspring@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210831033356.1459316-1-ntspring@fb.com
---
 tools/testing/selftests/bpf/prog_tests/skb_ctx.c | 5 +++++
 tools/testing/selftests/bpf/progs/test_skb_ctx.c | 4 ++++
 2 files changed, 9 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/skb_ctx.c b/tools/testing/selftests/bpf/prog_tests/skb_ctx.c
index fafeddaad6a9..2bf8c687348b 100644
--- a/tools/testing/selftests/bpf/prog_tests/skb_ctx.c
+++ b/tools/testing/selftests/bpf/prog_tests/skb_ctx.c
@@ -11,6 +11,7 @@ void test_skb_ctx(void)
 		.cb[3] = 4,
 		.cb[4] = 5,
 		.priority = 6,
+		.ingress_ifindex = 11,
 		.ifindex = 1,
 		.tstamp = 7,
 		.wire_len = 100,
@@ -97,6 +98,10 @@ void test_skb_ctx(void)
 		   "ctx_out_ifindex",
 		   "skb->ifindex == %d, expected %d\n",
 		   skb.ifindex, 1);
+	CHECK_ATTR(skb.ingress_ifindex != 11,
+		   "ctx_out_ingress_ifindex",
+		   "skb->ingress_ifindex == %d, expected %d\n",
+		   skb.ingress_ifindex, 11);
 	CHECK_ATTR(skb.tstamp != 8,
 		   "ctx_out_tstamp",
 		   "skb->tstamp == %lld, expected %d\n",
diff --git a/tools/testing/selftests/bpf/progs/test_skb_ctx.c b/tools/testing/selftests/bpf/progs/test_skb_ctx.c
index b02ea589ce7e..bbd5a9c1c4df 100644
--- a/tools/testing/selftests/bpf/progs/test_skb_ctx.c
+++ b/tools/testing/selftests/bpf/progs/test_skb_ctx.c
@@ -25,6 +25,10 @@ int process(struct __sk_buff *skb)
 		return 1;
 	if (skb->gso_size != 10)
 		return 1;
+	if (skb->ingress_ifindex != 11)
+		return 1;
+	if (skb->ifindex != 1)
+		return 1;
 
 	return 0;
 }
-- 
cgit v1.2.3


From 980a1a4c342f353a62d64174d0a6a9466a741273 Mon Sep 17 00:00:00 2001
From: Matt Smith <alastorze@fb.com>
Date: Wed, 1 Sep 2021 12:44:39 -0700
Subject: selftests/bpf: Add checks for X__elf_bytes() skeleton helper

This patch adds two checks for the X__elf_bytes BPF skeleton helper
method. The first asserts that the pointer returned from the helper
method is valid, the second asserts that the provided size pointer is
set.

Signed-off-by: Matt Smith <alastorze@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210901194439.3853238-4-alastorze@fb.com
---
 tools/testing/selftests/bpf/prog_tests/skeleton.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/skeleton.c b/tools/testing/selftests/bpf/prog_tests/skeleton.c
index f6f130c99b8c..fe1e204a65c6 100644
--- a/tools/testing/selftests/bpf/prog_tests/skeleton.c
+++ b/tools/testing/selftests/bpf/prog_tests/skeleton.c
@@ -18,6 +18,8 @@ void test_skeleton(void)
 	struct test_skeleton__data *data;
 	struct test_skeleton__rodata *rodata;
 	struct test_skeleton__kconfig *kcfg;
+	const void *elf_bytes;
+	size_t elf_bytes_sz = 0;
 
 	skel = test_skeleton__open();
 	if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
@@ -91,6 +93,10 @@ void test_skeleton(void)
 	CHECK(bss->kern_ver != kcfg->LINUX_KERNEL_VERSION, "ext2",
 	      "got %d != exp %d\n", bss->kern_ver, kcfg->LINUX_KERNEL_VERSION);
 
+	elf_bytes = test_skeleton__elf_bytes(&elf_bytes_sz);
+	ASSERT_OK_PTR(elf_bytes, "elf_bytes");
+	ASSERT_GE(elf_bytes_sz, 0, "elf_bytes_sz");
+
 cleanup:
 	test_skeleton__destroy(skel);
 }
-- 
cgit v1.2.3


From 0b46b755056043dccfe078b96b256502b88f2464 Mon Sep 17 00:00:00 2001
From: Quentin Monnet <quentin@isovalent.com>
Date: Wed, 8 Sep 2021 14:32:26 -0700
Subject: libbpf: Add LIBBPF_DEPRECATED_SINCE macro for scheduling API
 deprecations

Introduce a macro LIBBPF_DEPRECATED_SINCE(major, minor, message) to prepare
the deprecation of two API functions. This macro marks functions as deprecated
when libbpf's version reaches the values passed as an argument.

As part of this change libbpf_version.h header is added with recorded major
(LIBBPF_MAJOR_VERSION) and minor (LIBBPF_MINOR_VERSION) libbpf version macros.
They are now part of libbpf public API and can be relied upon by user code.
libbpf_version.h is installed system-wide along other libbpf public headers.

Due to this new build-time auto-generated header, in-kernel applications
relying on libbpf (resolve_btfids, bpftool, bpf_preload) are updated to
include libbpf's output directory as part of a list of include search paths.
Better fix would be to use libbpf's make_install target to install public API
headers, but that clean up is left out as a future improvement. The build
changes were tested by building kernel (with KBUILD_OUTPUT and O= specified
explicitly), bpftool, libbpf, selftests/bpf, and resolve_btfids builds. No
problems were detected.

Note that because of the constraints of the C preprocessor we have to write
a few lines of macro magic for each version used to prepare deprecation (0.6
for now).

Also, use LIBBPF_DEPRECATED_SINCE() to schedule deprecation of
btf__get_from_id() and btf__load(), which are replaced by
btf__load_from_kernel_by_id() and btf__load_into_kernel(), respectively,
starting from future libbpf v0.6. This is part of libbpf 1.0 effort ([0]).

  [0] Closes: https://github.com/libbpf/libbpf/issues/278

Co-developed-by: Quentin Monnet <quentin@isovalent.com>
Co-developed-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210908213226.1871016-1-andrii@kernel.org
---
 kernel/bpf/preload/Makefile          |  7 +++++--
 tools/bpf/bpftool/Makefile           |  4 ++++
 tools/bpf/resolve_btfids/Makefile    |  6 ++++--
 tools/lib/bpf/Makefile               | 24 +++++++++++++++++-------
 tools/lib/bpf/btf.h                  |  2 ++
 tools/lib/bpf/libbpf_common.h        | 19 +++++++++++++++++++
 tools/testing/selftests/bpf/Makefile |  4 ++--
 7 files changed, 53 insertions(+), 13 deletions(-)

(limited to 'tools/testing')

diff --git a/kernel/bpf/preload/Makefile b/kernel/bpf/preload/Makefile
index 1951332dd15f..ac29d4e9a384 100644
--- a/kernel/bpf/preload/Makefile
+++ b/kernel/bpf/preload/Makefile
@@ -10,12 +10,15 @@ LIBBPF_OUT = $(abspath $(obj))
 $(LIBBPF_A):
 	$(Q)$(MAKE) -C $(LIBBPF_SRCS) O=$(LIBBPF_OUT)/ OUTPUT=$(LIBBPF_OUT)/ $(LIBBPF_OUT)/libbpf.a
 
-userccflags += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi \
+userccflags += -I$(LIBBPF_OUT) -I $(srctree)/tools/include/ \
+	-I $(srctree)/tools/include/uapi \
 	-I $(srctree)/tools/lib/ -Wno-unused-result
 
 userprogs := bpf_preload_umd
 
-clean-files := $(userprogs) bpf_helper_defs.h FEATURE-DUMP.libbpf staticobjs/ feature/
+clean-files := $(userprogs) libbpf_version.h bpf_helper_defs.h FEATURE-DUMP.libbpf staticobjs/ feature/
+
+$(obj)/iterators/iterators.o: $(LIBBPF_A)
 
 bpf_preload_umd-objs := iterators/iterators.o
 bpf_preload_umd-userldlibs := $(LIBBPF_A) -lelf -lz
diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index d73232be1e99..06aa1616dabe 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -60,6 +60,7 @@ CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
 CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
 CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
 	-I$(if $(OUTPUT),$(OUTPUT),.) \
+	$(if $(LIBBPF_OUTPUT),-I$(LIBBPF_OUTPUT)) \
 	-I$(srctree)/kernel/bpf/ \
 	-I$(srctree)/tools/include \
 	-I$(srctree)/tools/include/uapi \
@@ -137,7 +138,10 @@ endif
 BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool
 
 BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o xlated_dumper.o btf_dumper.o disasm.o)
+$(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP)
+
 OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
+$(OBJS): $(LIBBPF)
 
 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)				\
 		     $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)	\
diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
index bb9fa8de7e62..edc0c329cf74 100644
--- a/tools/bpf/resolve_btfids/Makefile
+++ b/tools/bpf/resolve_btfids/Makefile
@@ -26,6 +26,7 @@ LIBBPF_SRC := $(srctree)/tools/lib/bpf/
 SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
 
 BPFOBJ     := $(OUTPUT)/libbpf/libbpf.a
+LIBBPF_OUT := $(abspath $(dir $(BPFOBJ)))/
 SUBCMDOBJ  := $(OUTPUT)/libsubcmd/libsubcmd.a
 
 BINARY     := $(OUTPUT)/resolve_btfids
@@ -41,11 +42,12 @@ $(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
 	$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
 
 $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)/libbpf
-	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC)  OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
+	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC)  OUTPUT=$(LIBBPF_OUT) $(abspath $@)
 
 CFLAGS := -g \
           -I$(srctree)/tools/include \
           -I$(srctree)/tools/include/uapi \
+          -I$(LIBBPF_OUT) \
           -I$(LIBBPF_SRC) \
           -I$(SUBCMD_SRC)
 
@@ -54,7 +56,7 @@ LIBS = -lelf -lz
 export srctree OUTPUT CFLAGS Q
 include $(srctree)/tools/build/Makefile.include
 
-$(BINARY_IN): fixdep FORCE | $(OUTPUT)
+$(BINARY_IN): $(BPFOBJ) fixdep FORCE | $(OUTPUT)
 	$(Q)$(MAKE) $(build)=resolve_btfids
 
 $(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index 74c3b73a5fbe..dab21e0c7cc2 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -8,7 +8,8 @@ VERSION_SCRIPT := libbpf.map
 LIBBPF_VERSION := $(shell \
 	grep -oE '^LIBBPF_([0-9.]+)' $(VERSION_SCRIPT) | \
 	sort -rV | head -n1 | cut -d'_' -f2)
-LIBBPF_MAJOR_VERSION := $(firstword $(subst ., ,$(LIBBPF_VERSION)))
+LIBBPF_MAJOR_VERSION := $(word 1,$(subst ., ,$(LIBBPF_VERSION)))
+LIBBPF_MINOR_VERSION := $(word 2,$(subst ., ,$(LIBBPF_VERSION)))
 
 MAKEFLAGS += --no-print-directory
 
@@ -59,7 +60,8 @@ ifndef VERBOSE
   VERBOSE = 0
 endif
 
-INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/tools/include/uapi
+INCLUDES = -I$(if $(OUTPUT),$(OUTPUT),.)				\
+	   -I$(srctree)/tools/include -I$(srctree)/tools/include/uapi
 
 export prefix libdir src obj
 
@@ -111,7 +113,9 @@ SHARED_OBJDIR	:= $(OUTPUT)sharedobjs/
 STATIC_OBJDIR	:= $(OUTPUT)staticobjs/
 BPF_IN_SHARED	:= $(SHARED_OBJDIR)libbpf-in.o
 BPF_IN_STATIC	:= $(STATIC_OBJDIR)libbpf-in.o
+VERSION_HDR	:= $(OUTPUT)libbpf_version.h
 BPF_HELPER_DEFS	:= $(OUTPUT)bpf_helper_defs.h
+BPF_GENERATED	:= $(BPF_HELPER_DEFS) $(VERSION_HDR)
 
 LIB_TARGET	:= $(addprefix $(OUTPUT),$(LIB_TARGET))
 LIB_FILE	:= $(addprefix $(OUTPUT),$(LIB_FILE))
@@ -136,7 +140,7 @@ all: fixdep
 
 all_cmd: $(CMD_TARGETS) check
 
-$(BPF_IN_SHARED): force $(BPF_HELPER_DEFS)
+$(BPF_IN_SHARED): force $(BPF_GENERATED)
 	@(test -f ../../include/uapi/linux/bpf.h -a -f ../../../include/uapi/linux/bpf.h && ( \
 	(diff -B ../../include/uapi/linux/bpf.h ../../../include/uapi/linux/bpf.h >/dev/null) || \
 	echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs from latest version at 'include/uapi/linux/bpf.h'" >&2 )) || true
@@ -154,13 +158,19 @@ $(BPF_IN_SHARED): force $(BPF_HELPER_DEFS)
 	echo "Warning: Kernel ABI header at 'tools/include/uapi/linux/if_xdp.h' differs from latest version at 'include/uapi/linux/if_xdp.h'" >&2 )) || true
 	$(Q)$(MAKE) $(build)=libbpf OUTPUT=$(SHARED_OBJDIR) CFLAGS="$(CFLAGS) $(SHLIB_FLAGS)"
 
-$(BPF_IN_STATIC): force $(BPF_HELPER_DEFS)
+$(BPF_IN_STATIC): force $(BPF_GENERATED)
 	$(Q)$(MAKE) $(build)=libbpf OUTPUT=$(STATIC_OBJDIR)
 
 $(BPF_HELPER_DEFS): $(srctree)/tools/include/uapi/linux/bpf.h
 	$(QUIET_GEN)$(srctree)/scripts/bpf_doc.py --header \
 		--file $(srctree)/tools/include/uapi/linux/bpf.h > $(BPF_HELPER_DEFS)
 
+$(VERSION_HDR): force
+	$(QUIET_GEN)echo "/* This file was auto-generated. */" > $@
+	@echo "" >> $@
+	@echo "#define LIBBPF_MAJOR_VERSION $(LIBBPF_MAJOR_VERSION)" >> $@
+	@echo "#define LIBBPF_MINOR_VERSION $(LIBBPF_MINOR_VERSION)" >> $@
+
 $(OUTPUT)libbpf.so: $(OUTPUT)libbpf.so.$(LIBBPF_VERSION)
 
 $(OUTPUT)libbpf.so.$(LIBBPF_VERSION): $(BPF_IN_SHARED) $(VERSION_SCRIPT)
@@ -224,10 +234,10 @@ install_lib: all_cmd
 		cp -fpR $(LIB_FILE) $(DESTDIR)$(libdir_SQ)
 
 INSTALL_HEADERS = bpf.h libbpf.h btf.h libbpf_common.h libbpf_legacy.h xsk.h \
-		  bpf_helpers.h $(BPF_HELPER_DEFS) bpf_tracing.h	     \
+		  bpf_helpers.h $(BPF_GENERATED) bpf_tracing.h	     \
 		  bpf_endian.h bpf_core_read.h skel_internal.h
 
-install_headers: $(BPF_HELPER_DEFS)
+install_headers: $(BPF_GENERATED)
 	$(call QUIET_INSTALL, headers)					     \
 		$(foreach hdr,$(INSTALL_HEADERS),			     \
 			$(call do_install,$(hdr),$(prefix)/include/bpf,644);)
@@ -240,7 +250,7 @@ install: install_lib install_pkgconfig install_headers
 
 clean:
 	$(call QUIET_CLEAN, libbpf) $(RM) -rf $(CMD_TARGETS)		     \
-		*~ .*.d .*.cmd LIBBPF-CFLAGS $(BPF_HELPER_DEFS)		     \
+		*~ .*.d .*.cmd LIBBPF-CFLAGS $(BPF_GENERATED)		     \
 		$(SHARED_OBJDIR) $(STATIC_OBJDIR)			     \
 		$(addprefix $(OUTPUT),					     \
 			    *.o *.a *.so *.so.$(LIBBPF_MAJOR_VERSION) *.pc)
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h
index 4a711f990904..f2e2fab950b7 100644
--- a/tools/lib/bpf/btf.h
+++ b/tools/lib/bpf/btf.h
@@ -50,9 +50,11 @@ LIBBPF_API struct btf *libbpf_find_kernel_btf(void);
 
 LIBBPF_API struct btf *btf__load_from_kernel_by_id(__u32 id);
 LIBBPF_API struct btf *btf__load_from_kernel_by_id_split(__u32 id, struct btf *base_btf);
+LIBBPF_DEPRECATED_SINCE(0, 6, "use btf__load_from_kernel_by_id instead")
 LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf);
 
 LIBBPF_API int btf__finalize_data(struct bpf_object *obj, struct btf *btf);
+LIBBPF_DEPRECATED_SINCE(0, 6, "use btf__load_into_kernel instead")
 LIBBPF_API int btf__load(struct btf *btf);
 LIBBPF_API int btf__load_into_kernel(struct btf *btf);
 LIBBPF_API __s32 btf__find_by_name(const struct btf *btf,
diff --git a/tools/lib/bpf/libbpf_common.h b/tools/lib/bpf/libbpf_common.h
index 947d8bd8a7bb..36ac77f2bea2 100644
--- a/tools/lib/bpf/libbpf_common.h
+++ b/tools/lib/bpf/libbpf_common.h
@@ -10,6 +10,7 @@
 #define __LIBBPF_LIBBPF_COMMON_H
 
 #include <string.h>
+#include "libbpf_version.h"
 
 #ifndef LIBBPF_API
 #define LIBBPF_API __attribute__((visibility("default")))
@@ -17,6 +18,24 @@
 
 #define LIBBPF_DEPRECATED(msg) __attribute__((deprecated(msg)))
 
+/* Mark a symbol as deprecated when libbpf version is >= {major}.{minor} */
+#define LIBBPF_DEPRECATED_SINCE(major, minor, msg)			    \
+	__LIBBPF_MARK_DEPRECATED_ ## major ## _ ## minor		    \
+		(LIBBPF_DEPRECATED("libbpf v" # major "." # minor "+: " msg))
+
+#define __LIBBPF_CURRENT_VERSION_GEQ(major, minor)			    \
+	(LIBBPF_MAJOR_VERSION > (major) ||				    \
+	 (LIBBPF_MAJOR_VERSION == (major) && LIBBPF_MINOR_VERSION >= (minor)))
+
+/* Add checks for other versions below when planning deprecation of API symbols
+ * with the LIBBPF_DEPRECATED_SINCE macro.
+ */
+#if __LIBBPF_CURRENT_VERSION_GEQ(0, 6)
+#define __LIBBPF_MARK_DEPRECATED_0_6(X) X
+#else
+#define __LIBBPF_MARK_DEPRECATED_0_6(X)
+#endif
+
 /* Helper macro to declare and initialize libbpf options struct
  *
  * This dance with uninitialized declaration, followed by memset to zero,
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 866531c08e4f..1a4d30ff3275 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -512,14 +512,14 @@ $(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
 	$(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
 
 # Benchmark runner
-$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h
+$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
 	$(call msg,CC,,$@)
 	$(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
 $(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
 $(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
 $(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
 			    $(OUTPUT)/perfbuf_bench.skel.h
-$(OUTPUT)/bench.o: bench.h testing_helpers.h
+$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
 $(OUTPUT)/bench: LDLIBS += -lm
 $(OUTPUT)/bench: $(OUTPUT)/bench.o $(OUTPUT)/testing_helpers.o \
 		 $(OUTPUT)/bench_count.o \
-- 
cgit v1.2.3


From ed7b74dc777777254a97de3e18e5dcbcebf3f015 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:09 +0200
Subject: selftests: xsk: Simplify xsk and umem arrays

Simplify the xsk_info and umem_info allocation by allocating them
upfront in an array, instead of allocating an array of pointers to
future creations of these. Allocating them upfront also has the
advantage that configuration information can be stored in these
structures instead of relying on global variables. With the previous
structure, xsk_info and umem_info were created too late to be able to
store most configuration information. This will be used to eliminate
most global variables in later patches in this series.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-2-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 78 +++++++++++++-------------------
 tools/testing/selftests/bpf/xdpxceiver.h |  5 +-
 2 files changed, 34 insertions(+), 49 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index f53ce2683f8d..9639d8da516d 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -235,7 +235,7 @@ static void gen_udp_csum(struct udphdr *udp_hdr, struct iphdr *ip_hdr)
 	    udp_csum(ip_hdr->saddr, ip_hdr->daddr, UDP_PKT_SIZE, IPPROTO_UDP, (u16 *)udp_hdr);
 }
 
-static void xsk_configure_umem(struct ifobject *data, void *buffer, u64 size, int idx)
+static int xsk_configure_umem(struct xsk_umem_info *umem, void *buffer, u64 size, int idx)
 {
 	struct xsk_umem_config cfg = {
 		.fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS,
@@ -244,21 +244,15 @@ static void xsk_configure_umem(struct ifobject *data, void *buffer, u64 size, in
 		.frame_headroom = frame_headroom,
 		.flags = XSK_UMEM__DEFAULT_FLAGS
 	};
-	struct xsk_umem_info *umem;
 	int ret;
 
-	umem = calloc(1, sizeof(struct xsk_umem_info));
-	if (!umem)
-		exit_with_error(errno);
-
 	ret = xsk_umem__create(&umem->umem, buffer, size,
 			       &umem->fq, &umem->cq, &cfg);
 	if (ret)
-		exit_with_error(-ret);
+		return ret;
 
 	umem->buffer = buffer;
-
-	data->umem_arr[idx] = umem;
+	return 0;
 }
 
 static void xsk_populate_fill_ring(struct xsk_umem_info *umem)
@@ -274,19 +268,14 @@ static void xsk_populate_fill_ring(struct xsk_umem_info *umem)
 	xsk_ring_prod__submit(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS);
 }
 
-static int xsk_configure_socket(struct ifobject *ifobject, int idx)
+static int xsk_configure_socket(struct xsk_socket_info *xsk, struct xsk_umem_info *umem,
+				struct ifobject *ifobject, u32 qid)
 {
 	struct xsk_socket_config cfg;
-	struct xsk_socket_info *xsk;
 	struct xsk_ring_cons *rxr;
 	struct xsk_ring_prod *txr;
-	int ret;
 
-	xsk = calloc(1, sizeof(struct xsk_socket_info));
-	if (!xsk)
-		exit_with_error(errno);
-
-	xsk->umem = ifobject->umem;
+	xsk->umem = umem;
 	cfg.rx_size = rxqsize;
 	cfg.tx_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
 	cfg.libbpf_flags = 0;
@@ -301,14 +290,7 @@ static int xsk_configure_socket(struct ifobject *ifobject, int idx)
 		txr = &xsk->tx;
 	}
 
-	ret = xsk_socket__create(&xsk->xsk, ifobject->ifname, idx,
-				 ifobject->umem->umem, rxr, txr, &cfg);
-	if (ret)
-		return 1;
-
-	ifobject->xsk_arr[idx] = xsk;
-
-	return 0;
+	return xsk_socket__create(&xsk->xsk, ifobject->ifname, qid, umem->umem, rxr, txr, &cfg);
 }
 
 static struct option long_options[] = {
@@ -756,8 +738,7 @@ static void thread_common_ops(struct ifobject *ifobject, void *bufs)
 	u64 umem_sz = num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
 	int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
 	size_t mmap_sz = umem_sz;
-	int ctr = 0;
-	int ret;
+	int ctr = 0, ret;
 
 	ifobject->ns_fd = switch_namespace(ifobject->nsname);
 
@@ -769,31 +750,34 @@ static void thread_common_ops(struct ifobject *ifobject, void *bufs)
 		exit_with_error(errno);
 
 	while (ctr++ < SOCK_RECONF_CTR) {
-		xsk_configure_umem(ifobject, bufs, umem_sz, 0);
-		ifobject->umem = ifobject->umem_arr[0];
-		ret = xsk_configure_socket(ifobject, 0);
+		ret = xsk_configure_umem(&ifobject->umem_arr[0], bufs, umem_sz, 0);
+		if (ret)
+			exit_with_error(-ret);
+
+		ret = xsk_configure_socket(&ifobject->xsk_arr[0], &ifobject->umem_arr[0],
+					   ifobject, 0);
 		if (!ret)
 			break;
 
 		/* Retry Create Socket if it fails as xsk_socket__create() is asynchronous */
-		usleep(USLEEP_MAX);
 		if (ctr >= SOCK_RECONF_CTR)
 			exit_with_error(-ret);
+		usleep(USLEEP_MAX);
 	}
 
-	ifobject->umem = ifobject->umem_arr[0];
-	ifobject->xsk = ifobject->xsk_arr[0];
-
 	if (test_type == TEST_TYPE_BPF_RES) {
-		xsk_configure_umem(ifobject, (u8 *)bufs + umem_sz, umem_sz, 1);
-		ifobject->umem = ifobject->umem_arr[1];
-		ret = xsk_configure_socket(ifobject, 1);
+		ret = xsk_configure_umem(&ifobject->umem_arr[1], (u8 *)bufs + umem_sz, umem_sz, 1);
+		if (ret)
+			exit_with_error(-ret);
+
+		ret = xsk_configure_socket(&ifobject->xsk_arr[1], &ifobject->umem_arr[1],
+					   ifobject, 1);
+		if (ret)
+			exit_with_error(-ret);
 	}
 
-	ifobject->umem = ifobject->umem_arr[0];
-	ifobject->xsk = ifobject->xsk_arr[0];
-	print_verbose("Interface [%s] vector [%s]\n",
-		      ifobject->ifname, ifobject->fv.vector == tx ? "Tx" : "Rx");
+	ifobject->umem = &ifobject->umem_arr[0];
+	ifobject->xsk = &ifobject->xsk_arr[0];
 }
 
 static bool testapp_is_test_two_stepped(void)
@@ -941,10 +925,10 @@ static void swap_xsk_res(void)
 	xsk_umem__delete(ifdict_tx->umem->umem);
 	xsk_socket__delete(ifdict_rx->xsk->xsk);
 	xsk_umem__delete(ifdict_rx->umem->umem);
-	ifdict_tx->umem = ifdict_tx->umem_arr[1];
-	ifdict_tx->xsk = ifdict_tx->xsk_arr[1];
-	ifdict_rx->umem = ifdict_rx->umem_arr[1];
-	ifdict_rx->xsk = ifdict_rx->xsk_arr[1];
+	ifdict_tx->umem = &ifdict_tx->umem_arr[1];
+	ifdict_tx->xsk = &ifdict_tx->xsk_arr[1];
+	ifdict_rx->umem = &ifdict_rx->umem_arr[1];
+	ifdict_rx->xsk = &ifdict_rx->xsk_arr[1];
 }
 
 static void testapp_bpf_res(void)
@@ -1071,11 +1055,11 @@ static struct ifobject *ifobject_create(void)
 	if (!ifobj)
 		return NULL;
 
-	ifobj->xsk_arr = calloc(2, sizeof(struct xsk_socket_info *));
+	ifobj->xsk_arr = calloc(MAX_SOCKETS, sizeof(*ifobj->xsk_arr));
 	if (!ifobj->xsk_arr)
 		goto out_xsk_arr;
 
-	ifobj->umem_arr = calloc(2, sizeof(struct xsk_umem_info *));
+	ifobj->umem_arr = calloc(MAX_SOCKETS, sizeof(*ifobj->umem_arr));
 	if (!ifobj->umem_arr)
 		goto out_umem_arr;
 
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 7e49b9fbe25e..de80516ac6c2 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -21,6 +21,7 @@
 #define MAX_INTERFACE_NAME_CHARS 7
 #define MAX_INTERFACES_NAMESPACE_CHARS 10
 #define MAX_SOCKS 1
+#define MAX_SOCKETS 2
 #define MAX_TEARDOWN_ITER 10
 #define MAX_BIDI_ITER 2
 #define MAX_BPF_ITER 2
@@ -119,9 +120,9 @@ struct ifobject {
 	char ifname[MAX_INTERFACE_NAME_CHARS];
 	char nsname[MAX_INTERFACES_NAMESPACE_CHARS];
 	struct xsk_socket_info *xsk;
-	struct xsk_socket_info **xsk_arr;
-	struct xsk_umem_info **umem_arr;
+	struct xsk_socket_info *xsk_arr;
 	struct xsk_umem_info *umem;
+	struct xsk_umem_info *umem_arr;
 	void *(*func_ptr)(void *arg);
 	struct flow_vector fv;
 	struct pkt_stream *pkt_stream;
-- 
cgit v1.2.3


From 744eb5c882e8133d97f656cb6f9c49817889fa64 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:10 +0200
Subject: selftests: xsk: Introduce type for thread function

Introduce a typedef of the thread function so this can be passed to
init_iface() in order to simplify that function.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-3-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 25 ++++++++++++-------------
 tools/testing/selftests/bpf/xdpxceiver.h |  4 +++-
 2 files changed, 15 insertions(+), 14 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 9639d8da516d..edf5b6cc6998 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -974,10 +974,9 @@ static void testapp_stats(void)
 	print_ksft_result();
 }
 
-static void init_iface(struct ifobject *ifobj, const char *dst_mac,
-		       const char *src_mac, const char *dst_ip,
-		       const char *src_ip, const u16 dst_port,
-		       const u16 src_port, enum fvector vector)
+static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char *src_mac,
+		       const char *dst_ip, const char *src_ip, const u16 dst_port,
+		       const u16 src_port, enum fvector vector, thread_func_t func_ptr)
 {
 	struct in_addr ip;
 
@@ -993,15 +992,13 @@ static void init_iface(struct ifobject *ifobj, const char *dst_mac,
 	ifobj->dst_port = dst_port;
 	ifobj->src_port = src_port;
 
-	if (vector == tx) {
-		ifobj->fv.vector = tx;
-		ifobj->func_ptr = worker_testapp_validate_tx;
+	if (vector == tx)
 		ifdict_tx = ifobj;
-	} else {
-		ifobj->fv.vector = rx;
-		ifobj->func_ptr = worker_testapp_validate_rx;
+	else
 		ifdict_rx = ifobj;
-	}
+
+	ifobj->fv.vector = vector;
+	ifobj->func_ptr = func_ptr;
 }
 
 static void run_pkt_test(int mode, int type)
@@ -1097,8 +1094,10 @@ int main(int argc, char **argv)
 
 	parse_command_line(argc, argv);
 
-	init_iface(ifdict[tx], MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx);
-	init_iface(ifdict[rx], MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx);
+	init_iface(ifdict[tx], MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx,
+		   worker_testapp_validate_tx);
+	init_iface(ifdict[rx], MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx,
+		   worker_testapp_validate_rx);
 
 	ksft_set_plan(TEST_MODE_MAX * TEST_TYPE_MAX);
 
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index de80516ac6c2..799d524eb425 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -116,6 +116,8 @@ struct pkt_stream {
 	struct pkt *pkts;
 };
 
+typedef void *(*thread_func_t)(void *arg);
+
 struct ifobject {
 	char ifname[MAX_INTERFACE_NAME_CHARS];
 	char nsname[MAX_INTERFACES_NAMESPACE_CHARS];
@@ -123,8 +125,8 @@ struct ifobject {
 	struct xsk_socket_info *xsk_arr;
 	struct xsk_umem_info *umem;
 	struct xsk_umem_info *umem_arr;
-	void *(*func_ptr)(void *arg);
 	struct flow_vector fv;
+	thread_func_t func_ptr;
 	struct pkt_stream *pkt_stream;
 	int ns_fd;
 	u32 dst_ip;
-- 
cgit v1.2.3


From ce74acaf015c5ac9365abc017af051560950e46b Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:11 +0200
Subject: selftests: xsk: Introduce test specifications

Introduce a test specification to be able to concisely describe a
test. Currently, a test is implemented by sprinkling test specific if
statements here and there, which is not scalable or easy to
understand. The end goal with this patch set is to come to the point
in which a test is completely specified by a test specification that
can easily be constructed in a single function so that new tests can
be added without too much trouble. This test specification will be run
by a test runner that has no idea about tests. It just executes the
what test specification states.

This patch introduces the test specification and, as a start, puts the
two interface objects in there, one containing the packet stream to be
sent and the other one the packet stream that is supposed to be
received for a test to pass. The global variables containing these can
then be eliminated. The following patches will convert each existing
test into a test specification and add the needed fields into it and
the functionality in the test runner that act on the test
specification. At the end, the test runner should contain no test
specific code and each test should be described in a single simple
function.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-4-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 203 +++++++++++++++++++------------
 tools/testing/selftests/bpf/xdpxceiver.h |   7 +-
 2 files changed, 126 insertions(+), 84 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index edf5b6cc6998..a6bcc7453860 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -336,45 +336,43 @@ static int switch_namespace(const char *nsname)
 	return nsfd;
 }
 
-static int validate_interfaces(void)
+static bool validate_interface(struct ifobject *ifobj)
 {
-	bool ret = true;
-
-	for (int i = 0; i < MAX_INTERFACES; i++) {
-		if (!strcmp(ifdict[i]->ifname, "")) {
-			ret = false;
-			ksft_test_result_fail("ERROR: interfaces: -i <int>,<ns> -i <int>,<ns>.");
-		}
-	}
-	return ret;
+	if (!strcmp(ifobj->ifname, ""))
+		return false;
+	return true;
 }
 
-static void parse_command_line(int argc, char **argv)
+static void parse_command_line(struct test_spec *test, int argc, char **argv)
 {
-	int option_index, interface_index = 0, c;
+	struct ifobject *ifobj;
+	u32 interface_nb = 0;
+	int option_index, c;
 
 	opterr = 0;
 
 	for (;;) {
-		c = getopt_long(argc, argv, "i:Dv", long_options, &option_index);
+		char *sptr, *token;
 
+		c = getopt_long(argc, argv, "i:Dv", long_options, &option_index);
 		if (c == -1)
 			break;
 
 		switch (c) {
 		case 'i':
-			if (interface_index == MAX_INTERFACES)
+			if (interface_nb == 0)
+				ifobj = test->ifobj_tx;
+			else if (interface_nb == 1)
+				ifobj = test->ifobj_rx;
+			else
 				break;
-			char *sptr, *token;
 
 			sptr = strndupa(optarg, strlen(optarg));
-			memcpy(ifdict[interface_index]->ifname,
-			       strsep(&sptr, ","), MAX_INTERFACE_NAME_CHARS);
+			memcpy(ifobj->ifname, strsep(&sptr, ","), MAX_INTERFACE_NAME_CHARS);
 			token = strsep(&sptr, ",");
 			if (token)
-				memcpy(ifdict[interface_index]->nsname, token,
-				       MAX_INTERFACES_NAMESPACE_CHARS);
-			interface_index++;
+				memcpy(ifobj->nsname, token, MAX_INTERFACES_NAMESPACE_CHARS);
+			interface_nb++;
 			break;
 		case 'D':
 			opt_pkt_dump = true;
@@ -387,11 +385,44 @@ static void parse_command_line(int argc, char **argv)
 			ksft_exit_xfail();
 		}
 	}
+}
 
-	if (!validate_interfaces()) {
-		usage(basename(argv[0]));
-		ksft_exit_xfail();
+static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
+			     struct ifobject *ifobj_rx)
+{
+	u32 i, j;
+
+	for (i = 0; i < MAX_INTERFACES; i++) {
+		struct ifobject *ifobj = i ? ifobj_rx : ifobj_tx;
+
+		ifobj->umem = &ifobj->umem_arr[0];
+		ifobj->xsk = &ifobj->xsk_arr[0];
+
+		if (i == tx)
+			ifobj->fv.vector = tx;
+		else
+			ifobj->fv.vector = rx;
+
+		for (j = 0; j < MAX_SOCKETS; j++) {
+			memset(&ifobj->umem_arr[j], 0, sizeof(ifobj->umem_arr[j]));
+			memset(&ifobj->xsk_arr[j], 0, sizeof(ifobj->xsk_arr[j]));
+		}
 	}
+
+	test->ifobj_tx = ifobj_tx;
+	test->ifobj_rx = ifobj_rx;
+}
+
+static void test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
+			   struct ifobject *ifobj_rx)
+{
+	memset(test, 0, sizeof(*test));
+	__test_spec_init(test, ifobj_tx, ifobj_rx);
+}
+
+static void test_spec_reset(struct test_spec *test)
+{
+	__test_spec_init(test, test->ifobj_tx, test->ifobj_rx);
 }
 
 static struct pkt *pkt_stream_get_pkt(struct pkt_stream *pkt_stream, u32 pkt_nb)
@@ -842,8 +873,10 @@ static void *worker_testapp_validate_rx(void *arg)
 	pthread_exit(NULL);
 }
 
-static void testapp_validate(void)
+static void testapp_validate_traffic(struct test_spec *test)
 {
+	struct ifobject *ifobj_tx = test->ifobj_tx;
+	struct ifobject *ifobj_rx = test->ifobj_rx;
 	bool bidi = test_type == TEST_TYPE_BIDI;
 	bool bpf = test_type == TEST_TYPE_BPF_RES;
 	struct pkt_stream *pkt_stream;
@@ -855,18 +888,18 @@ static void testapp_validate(void)
 		pkt_stream = pkt_stream_generate(DEFAULT_PKT_CNT, XSK_UMEM__INVALID_FRAME_SIZE);
 	else
 		pkt_stream = pkt_stream_generate(DEFAULT_PKT_CNT, PKT_SIZE);
-	ifdict_tx->pkt_stream = pkt_stream;
-	ifdict_rx->pkt_stream = pkt_stream;
+	ifobj_tx->pkt_stream = pkt_stream;
+	ifobj_rx->pkt_stream = pkt_stream;
 
 	/*Spawn RX thread */
-	pthread_create(&t0, NULL, ifdict_rx->func_ptr, ifdict_rx);
+	pthread_create(&t0, NULL, ifobj_rx->func_ptr, ifobj_rx);
 
 	pthread_barrier_wait(&barr);
 	if (pthread_barrier_destroy(&barr))
 		exit_with_error(errno);
 
 	/*Spawn TX thread */
-	pthread_create(&t1, NULL, ifdict_tx->func_ptr, ifdict_tx);
+	pthread_create(&t1, NULL, ifobj_tx->func_ptr, ifobj_tx);
 
 	pthread_join(t1, NULL);
 	pthread_join(t0, NULL);
@@ -875,80 +908,82 @@ static void testapp_validate(void)
 		print_ksft_result();
 }
 
-static void testapp_teardown(void)
+static void testapp_teardown(struct test_spec *test)
 {
 	int i;
 
 	for (i = 0; i < MAX_TEARDOWN_ITER; i++) {
-		print_verbose("Creating socket\n");
-		testapp_validate();
+		testapp_validate_traffic(test);
+		test_spec_reset(test);
 	}
 
 	print_ksft_result();
 }
 
-static void swap_vectors(struct ifobject *ifobj1, struct ifobject *ifobj2)
+static void swap_directions(struct ifobject **ifobj1, struct ifobject **ifobj2)
 {
-	void *(*tmp_func_ptr)(void *) = ifobj1->func_ptr;
-	enum fvector tmp_vector = ifobj1->fv.vector;
+	thread_func_t tmp_func_ptr = (*ifobj1)->func_ptr;
+	enum fvector tmp_vector = (*ifobj1)->fv.vector;
+	struct ifobject *tmp_ifobj = (*ifobj1);
 
-	ifobj1->func_ptr = ifobj2->func_ptr;
-	ifobj1->fv.vector = ifobj2->fv.vector;
+	(*ifobj1)->func_ptr = (*ifobj2)->func_ptr;
+	(*ifobj1)->fv.vector = (*ifobj2)->fv.vector;
 
-	ifobj2->func_ptr = tmp_func_ptr;
-	ifobj2->fv.vector = tmp_vector;
+	(*ifobj2)->func_ptr = tmp_func_ptr;
+	(*ifobj2)->fv.vector = tmp_vector;
 
-	ifdict_tx = ifobj1;
-	ifdict_rx = ifobj2;
+	*ifobj1 = *ifobj2;
+	*ifobj2 = tmp_ifobj;
 }
 
-static void testapp_bidi(void)
+static void testapp_bidi(struct test_spec *test)
 {
 	for (int i = 0; i < MAX_BIDI_ITER; i++) {
 		print_verbose("Creating socket\n");
-		testapp_validate();
+		testapp_validate_traffic(test);
 		if (!second_step) {
 			print_verbose("Switching Tx/Rx vectors\n");
-			swap_vectors(ifdict[1], ifdict[0]);
+			swap_directions(&test->ifobj_rx, &test->ifobj_tx);
 		}
 		second_step = true;
 	}
 
-	swap_vectors(ifdict[0], ifdict[1]);
+	swap_directions(&test->ifobj_rx, &test->ifobj_tx);
 
 	print_ksft_result();
 }
 
-static void swap_xsk_res(void)
+static void swap_xsk_resources(struct ifobject *ifobj_tx, struct ifobject *ifobj_rx)
 {
-	xsk_socket__delete(ifdict_tx->xsk->xsk);
-	xsk_umem__delete(ifdict_tx->umem->umem);
-	xsk_socket__delete(ifdict_rx->xsk->xsk);
-	xsk_umem__delete(ifdict_rx->umem->umem);
-	ifdict_tx->umem = &ifdict_tx->umem_arr[1];
-	ifdict_tx->xsk = &ifdict_tx->xsk_arr[1];
-	ifdict_rx->umem = &ifdict_rx->umem_arr[1];
-	ifdict_rx->xsk = &ifdict_rx->xsk_arr[1];
+	xsk_socket__delete(ifobj_tx->xsk->xsk);
+	xsk_umem__delete(ifobj_tx->umem->umem);
+	xsk_socket__delete(ifobj_rx->xsk->xsk);
+	xsk_umem__delete(ifobj_rx->umem->umem);
+	ifobj_tx->umem = &ifobj_tx->umem_arr[1];
+	ifobj_tx->xsk = &ifobj_tx->xsk_arr[1];
+	ifobj_rx->umem = &ifobj_rx->umem_arr[1];
+	ifobj_rx->xsk = &ifobj_rx->xsk_arr[1];
 }
 
-static void testapp_bpf_res(void)
+static void testapp_bpf_res(struct test_spec *test)
 {
 	int i;
 
 	for (i = 0; i < MAX_BPF_ITER; i++) {
 		print_verbose("Creating socket\n");
-		testapp_validate();
+		testapp_validate_traffic(test);
 		if (!second_step)
-			swap_xsk_res();
+			swap_xsk_resources(test->ifobj_tx, test->ifobj_rx);
 		second_step = true;
 	}
 
 	print_ksft_result();
 }
 
-static void testapp_stats(void)
+static void testapp_stats(struct test_spec *test)
 {
 	for (int i = 0; i < STAT_TEST_TYPE_MAX; i++) {
+		test_spec_reset(test);
 		stat_test_type = i;
 
 		/* reset defaults */
@@ -968,7 +1003,7 @@ static void testapp_stats(void)
 		default:
 			break;
 		}
-		testapp_validate();
+		testapp_validate_traffic(test);
 	}
 
 	print_ksft_result();
@@ -992,16 +1027,11 @@ static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char *
 	ifobj->dst_port = dst_port;
 	ifobj->src_port = src_port;
 
-	if (vector == tx)
-		ifdict_tx = ifobj;
-	else
-		ifdict_rx = ifobj;
-
 	ifobj->fv.vector = vector;
 	ifobj->func_ptr = func_ptr;
 }
 
-static void run_pkt_test(int mode, int type)
+static void run_pkt_test(struct test_spec *test, int mode, int type)
 {
 	test_type = type;
 
@@ -1027,19 +1057,19 @@ static void run_pkt_test(int mode, int type)
 
 	switch (test_type) {
 	case TEST_TYPE_STATS:
-		testapp_stats();
+		testapp_stats(test);
 		break;
 	case TEST_TYPE_TEARDOWN:
-		testapp_teardown();
+		testapp_teardown(test);
 		break;
 	case TEST_TYPE_BIDI:
-		testapp_bidi();
+		testapp_bidi(test);
 		break;
 	case TEST_TYPE_BPF_RES:
-		testapp_bpf_res();
+		testapp_bpf_res(test);
 		break;
 	default:
-		testapp_validate();
+		testapp_validate_traffic(test);
 		break;
 	}
 }
@@ -1079,36 +1109,47 @@ static void ifobject_delete(struct ifobject *ifobj)
 int main(int argc, char **argv)
 {
 	struct rlimit _rlim = { RLIM_INFINITY, RLIM_INFINITY };
-	int i, j;
+	struct ifobject *ifobj_tx, *ifobj_rx;
+	struct test_spec test;
+	u32 i, j;
 
 	if (setrlimit(RLIMIT_MEMLOCK, &_rlim))
 		exit_with_error(errno);
 
-	for (i = 0; i < MAX_INTERFACES; i++) {
-		ifdict[i] = ifobject_create();
-		if (!ifdict[i])
-			exit_with_error(ENOMEM);
-	}
+	ifobj_tx = ifobject_create();
+	if (!ifobj_tx)
+		exit_with_error(ENOMEM);
+	ifobj_rx = ifobject_create();
+	if (!ifobj_rx)
+		exit_with_error(ENOMEM);
+
+	test_spec_init(&test, ifobj_tx, ifobj_rx);
 
 	setlocale(LC_ALL, "");
 
-	parse_command_line(argc, argv);
+	parse_command_line(&test, argc, argv);
+
+	if (!validate_interface(ifobj_tx) || !validate_interface(ifobj_rx)) {
+		usage(basename(argv[0]));
+		ksft_exit_xfail();
+	}
 
-	init_iface(ifdict[tx], MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx,
+	init_iface(ifobj_tx, MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx,
 		   worker_testapp_validate_tx);
-	init_iface(ifdict[rx], MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx,
+	init_iface(ifobj_rx, MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx,
 		   worker_testapp_validate_rx);
 
 	ksft_set_plan(TEST_MODE_MAX * TEST_TYPE_MAX);
 
 	for (i = 0; i < TEST_MODE_MAX; i++)
 		for (j = 0; j < TEST_TYPE_MAX; j++) {
-			run_pkt_test(i, j);
+			test_spec_init(&test, ifobj_tx, ifobj_rx);
+			run_pkt_test(&test, i, j);
 			usleep(USLEEP_MAX);
 		}
 
-	for (i = 0; i < MAX_INTERFACES; i++)
-		ifobject_delete(ifdict[i]);
+	ifobject_delete(ifobj_tx);
+	ifobject_delete(ifobj_rx);
 
 	ksft_exit_pass();
 	return 0;
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 799d524eb425..e279aa893438 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -137,9 +137,10 @@ struct ifobject {
 	u8 src_mac[ETH_ALEN];
 };
 
-static struct ifobject *ifdict[MAX_INTERFACES];
-static struct ifobject *ifdict_rx;
-static struct ifobject *ifdict_tx;
+struct test_spec {
+	struct ifobject *ifobj_tx;
+	struct ifobject *ifobj_rx;
+};
 
 /*threads*/
 pthread_barrier_t barr;
-- 
cgit v1.2.3


From 83f4ae2f26bd67c58d528c3967c5ad3e58098be3 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:12 +0200
Subject: selftests: xsk: Move num_frames and frame_headroom to xsk_umem_info

Move the global variables num_frames and frame_headroom to struct
xsk_umem_info. They describe properties of the umem so no reason for
them to be global.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-5-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 20 ++++++++++----------
 tools/testing/selftests/bpf/xdpxceiver.h |  4 ++--
 2 files changed, 12 insertions(+), 12 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index a6bcc7453860..56ee03fda2b3 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -241,7 +241,7 @@ static int xsk_configure_umem(struct xsk_umem_info *umem, void *buffer, u64 size
 		.fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS,
 		.comp_size = XSK_RING_CONS__DEFAULT_NUM_DESCS,
 		.frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE,
-		.frame_headroom = frame_headroom,
+		.frame_headroom = umem->frame_headroom,
 		.flags = XSK_UMEM__DEFAULT_FLAGS
 	};
 	int ret;
@@ -406,6 +406,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 		for (j = 0; j < MAX_SOCKETS; j++) {
 			memset(&ifobj->umem_arr[j], 0, sizeof(ifobj->umem_arr[j]));
 			memset(&ifobj->xsk_arr[j], 0, sizeof(ifobj->xsk_arr[j]));
+			ifobj->umem_arr[j].num_frames = DEFAULT_PKT_CNT / 4;
 		}
 	}
 
@@ -433,7 +434,7 @@ static struct pkt *pkt_stream_get_pkt(struct pkt_stream *pkt_stream, u32 pkt_nb)
 	return &pkt_stream->pkts[pkt_nb];
 }
 
-static struct pkt_stream *pkt_stream_generate(u32 nb_pkts, u32 pkt_len)
+static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb_pkts, u32 pkt_len)
 {
 	struct pkt_stream *pkt_stream;
 	u32 i;
@@ -448,7 +449,7 @@ static struct pkt_stream *pkt_stream_generate(u32 nb_pkts, u32 pkt_len)
 
 	pkt_stream->nb_pkts = nb_pkts;
 	for (i = 0; i < nb_pkts; i++) {
-		pkt_stream->pkts[i].addr = (i % num_frames) * XSK_UMEM__DEFAULT_FRAME_SIZE;
+		pkt_stream->pkts[i].addr = (i % umem->num_frames) * XSK_UMEM__DEFAULT_FRAME_SIZE;
 		pkt_stream->pkts[i].len = pkt_len;
 		pkt_stream->pkts[i].payload = i;
 	}
@@ -766,7 +767,7 @@ static void tx_stats_validate(struct ifobject *ifobject)
 
 static void thread_common_ops(struct ifobject *ifobject, void *bufs)
 {
-	u64 umem_sz = num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
+	u64 umem_sz = ifobject->umem->num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
 	int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
 	size_t mmap_sz = umem_sz;
 	int ctr = 0, ret;
@@ -885,9 +886,10 @@ static void testapp_validate_traffic(struct test_spec *test)
 		exit_with_error(errno);
 
 	if (stat_test_type == STAT_TEST_TX_INVALID)
-		pkt_stream = pkt_stream_generate(DEFAULT_PKT_CNT, XSK_UMEM__INVALID_FRAME_SIZE);
+		pkt_stream = pkt_stream_generate(test->ifobj_tx->umem, DEFAULT_PKT_CNT,
+						 XSK_UMEM__INVALID_FRAME_SIZE);
 	else
-		pkt_stream = pkt_stream_generate(DEFAULT_PKT_CNT, PKT_SIZE);
+		pkt_stream = pkt_stream_generate(test->ifobj_tx->umem, DEFAULT_PKT_CNT, PKT_SIZE);
 	ifobj_tx->pkt_stream = pkt_stream;
 	ifobj_rx->pkt_stream = pkt_stream;
 
@@ -988,12 +990,11 @@ static void testapp_stats(struct test_spec *test)
 
 		/* reset defaults */
 		rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
-		frame_headroom = XSK_UMEM__DEFAULT_FRAME_HEADROOM;
 
 		switch (stat_test_type) {
 		case STAT_TEST_RX_DROPPED:
-			frame_headroom = XSK_UMEM__DEFAULT_FRAME_SIZE -
-						XDP_PACKET_HEADROOM - 1;
+			test->ifobj_rx->umem->frame_headroom = XSK_UMEM__DEFAULT_FRAME_SIZE -
+				XDP_PACKET_HEADROOM - 1;
 			break;
 		case STAT_TEST_RX_FULL:
 			rxqsize = RX_FULL_RXQSIZE;
@@ -1040,7 +1041,6 @@ static void run_pkt_test(struct test_spec *test, int mode, int type)
 	second_step = 0;
 	stat_test_type = -1;
 	rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
-	frame_headroom = XSK_UMEM__DEFAULT_FRAME_HEADROOM;
 
 	configured_mode = mode;
 
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index e279aa893438..0d93a9e6c4f3 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -71,7 +71,6 @@ enum stat_test_type {
 
 static int configured_mode;
 static bool opt_pkt_dump;
-static u32 num_frames = DEFAULT_PKT_CNT / 4;
 static bool second_step;
 static int test_type;
 
@@ -81,12 +80,13 @@ static u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
 static u32 xdp_bind_flags = XDP_USE_NEED_WAKEUP | XDP_COPY;
 static int stat_test_type;
 static u32 rxqsize;
-static u32 frame_headroom;
 
 struct xsk_umem_info {
 	struct xsk_ring_prod fq;
 	struct xsk_ring_cons cq;
 	struct xsk_umem *umem;
+	u32 num_frames;
+	u32 frame_headroom;
 	void *buffer;
 };
 
-- 
cgit v1.2.3


From 4bf8ee65ba4ebf6b0d732cca8ecde2d5e1898d8a Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:13 +0200
Subject: selftests: xsk: Move rxqsize into xsk_socket_info

Move the global variable rxqsize to struct xsk_socket_info as it
describes the size of a ring in that struct. By default, it is set to
the size dictated by libbpf.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-6-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 9 +++------
 tools/testing/selftests/bpf/xdpxceiver.h | 2 +-
 2 files changed, 4 insertions(+), 7 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 56ee03fda2b3..28bf62c56190 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -276,7 +276,7 @@ static int xsk_configure_socket(struct xsk_socket_info *xsk, struct xsk_umem_inf
 	struct xsk_ring_prod *txr;
 
 	xsk->umem = umem;
-	cfg.rx_size = rxqsize;
+	cfg.rx_size = xsk->rxqsize;
 	cfg.tx_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
 	cfg.libbpf_flags = 0;
 	cfg.xdp_flags = xdp_flags;
@@ -407,6 +407,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 			memset(&ifobj->umem_arr[j], 0, sizeof(ifobj->umem_arr[j]));
 			memset(&ifobj->xsk_arr[j], 0, sizeof(ifobj->xsk_arr[j]));
 			ifobj->umem_arr[j].num_frames = DEFAULT_PKT_CNT / 4;
+			ifobj->xsk_arr[j].rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
 		}
 	}
 
@@ -988,16 +989,13 @@ static void testapp_stats(struct test_spec *test)
 		test_spec_reset(test);
 		stat_test_type = i;
 
-		/* reset defaults */
-		rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
-
 		switch (stat_test_type) {
 		case STAT_TEST_RX_DROPPED:
 			test->ifobj_rx->umem->frame_headroom = XSK_UMEM__DEFAULT_FRAME_SIZE -
 				XDP_PACKET_HEADROOM - 1;
 			break;
 		case STAT_TEST_RX_FULL:
-			rxqsize = RX_FULL_RXQSIZE;
+			test->ifobj_rx->xsk->rxqsize = RX_FULL_RXQSIZE;
 			break;
 		case STAT_TEST_TX_INVALID:
 			continue;
@@ -1040,7 +1038,6 @@ static void run_pkt_test(struct test_spec *test, int mode, int type)
 	xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
 	second_step = 0;
 	stat_test_type = -1;
-	rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
 
 	configured_mode = mode;
 
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 0d93a9e6c4f3..09e4e015b1bf 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -79,7 +79,6 @@ static bool opt_verbose;
 static u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
 static u32 xdp_bind_flags = XDP_USE_NEED_WAKEUP | XDP_COPY;
 static int stat_test_type;
-static u32 rxqsize;
 
 struct xsk_umem_info {
 	struct xsk_ring_prod fq;
@@ -96,6 +95,7 @@ struct xsk_socket_info {
 	struct xsk_umem_info *umem;
 	struct xsk_socket *xsk;
 	u32 outstanding_tx;
+	u32 rxqsize;
 };
 
 struct flow_vector {
-- 
cgit v1.2.3


From c160d7afba8f52c16b16111f8cbedd87f8d16d75 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:14 +0200
Subject: selftests: xsk: Make frame_size configurable

Make the frame size configurable instead of it being hard coded to a
default. This is a property of the umem and will make it possible to
implement tests for different umem frame sizes in a later patch.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-7-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 11 ++++++-----
 tools/testing/selftests/bpf/xdpxceiver.h |  1 +
 2 files changed, 7 insertions(+), 5 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 28bf62c56190..79cf082a7581 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -240,7 +240,7 @@ static int xsk_configure_umem(struct xsk_umem_info *umem, void *buffer, u64 size
 	struct xsk_umem_config cfg = {
 		.fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS,
 		.comp_size = XSK_RING_CONS__DEFAULT_NUM_DESCS,
-		.frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE,
+		.frame_size = umem->frame_size,
 		.frame_headroom = umem->frame_headroom,
 		.flags = XSK_UMEM__DEFAULT_FLAGS
 	};
@@ -264,7 +264,7 @@ static void xsk_populate_fill_ring(struct xsk_umem_info *umem)
 	if (ret != XSK_RING_PROD__DEFAULT_NUM_DESCS)
 		exit_with_error(-ret);
 	for (i = 0; i < XSK_RING_PROD__DEFAULT_NUM_DESCS; i++)
-		*xsk_ring_prod__fill_addr(&umem->fq, idx++) = i * XSK_UMEM__DEFAULT_FRAME_SIZE;
+		*xsk_ring_prod__fill_addr(&umem->fq, idx++) = i * umem->frame_size;
 	xsk_ring_prod__submit(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS);
 }
 
@@ -407,6 +407,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 			memset(&ifobj->umem_arr[j], 0, sizeof(ifobj->umem_arr[j]));
 			memset(&ifobj->xsk_arr[j], 0, sizeof(ifobj->xsk_arr[j]));
 			ifobj->umem_arr[j].num_frames = DEFAULT_PKT_CNT / 4;
+			ifobj->umem_arr[j].frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE;
 			ifobj->xsk_arr[j].rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
 		}
 	}
@@ -450,7 +451,7 @@ static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb
 
 	pkt_stream->nb_pkts = nb_pkts;
 	for (i = 0; i < nb_pkts; i++) {
-		pkt_stream->pkts[i].addr = (i % umem->num_frames) * XSK_UMEM__DEFAULT_FRAME_SIZE;
+		pkt_stream->pkts[i].addr = (i % umem->num_frames) * umem->frame_size;
 		pkt_stream->pkts[i].len = pkt_len;
 		pkt_stream->pkts[i].payload = i;
 	}
@@ -768,7 +769,7 @@ static void tx_stats_validate(struct ifobject *ifobject)
 
 static void thread_common_ops(struct ifobject *ifobject, void *bufs)
 {
-	u64 umem_sz = ifobject->umem->num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
+	u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
 	int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
 	size_t mmap_sz = umem_sz;
 	int ctr = 0, ret;
@@ -991,7 +992,7 @@ static void testapp_stats(struct test_spec *test)
 
 		switch (stat_test_type) {
 		case STAT_TEST_RX_DROPPED:
-			test->ifobj_rx->umem->frame_headroom = XSK_UMEM__DEFAULT_FRAME_SIZE -
+			test->ifobj_rx->umem->frame_headroom = test->ifobj_rx->umem->frame_size -
 				XDP_PACKET_HEADROOM - 1;
 			break;
 		case STAT_TEST_RX_FULL:
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 09e4e015b1bf..bfd14190abfc 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -87,6 +87,7 @@ struct xsk_umem_info {
 	u32 num_frames;
 	u32 frame_headroom;
 	void *buffer;
+	u32 frame_size;
 };
 
 struct xsk_socket_info {
-- 
cgit v1.2.3


From 53cb3cec2f1e2c2c0c3624f20675d01e84a8bbac Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:15 +0200
Subject: selftests: xsx: Introduce test name in test spec

Introduce the test name in the test specification. This so we can set
the name locally in the test function and simplify the logic for
printing out test results.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-8-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 49 +++++++++++++++++++-------------
 tools/testing/selftests/bpf/xdpxceiver.h |  2 ++
 2 files changed, 31 insertions(+), 20 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 79cf082a7581..8ef58081d4d2 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -112,13 +112,9 @@ static void __exit_with_error(int error, const char *file, const char *func, int
 
 #define exit_with_error(error) __exit_with_error(error, __FILE__, __func__, __LINE__)
 
-#define print_ksft_result(void)\
-	(ksft_test_result_pass("PASS: %s %s %s%s%s%s\n", configured_mode ? "DRV" : "SKB",\
-			       test_type == TEST_TYPE_POLL ? "POLL" : "NOPOLL",\
-			       test_type == TEST_TYPE_TEARDOWN ? "Socket Teardown" : "",\
-			       test_type == TEST_TYPE_BIDI ? "Bi-directional Sockets" : "",\
-			       test_type == TEST_TYPE_STATS ? "Stats" : "",\
-			       test_type == TEST_TYPE_BPF_RES ? "BPF RES" : ""))
+#define print_ksft_result(test)\
+	(ksft_test_result_pass("PASS: %s %s\n", configured_mode ? "DRV" : "SKB", \
+			       (test)->name))
 
 static void memset32_htonl(void *dest, u32 val, u32 size)
 {
@@ -428,6 +424,11 @@ static void test_spec_reset(struct test_spec *test)
 	__test_spec_init(test, test->ifobj_tx, test->ifobj_rx);
 }
 
+static void test_spec_set_name(struct test_spec *test, const char *name)
+{
+	strncpy(test->name, name, MAX_TEST_NAME_SIZE);
+}
+
 static struct pkt *pkt_stream_get_pkt(struct pkt_stream *pkt_stream, u32 pkt_nb)
 {
 	if (pkt_nb >= pkt_stream->nb_pkts)
@@ -880,8 +881,6 @@ static void testapp_validate_traffic(struct test_spec *test)
 {
 	struct ifobject *ifobj_tx = test->ifobj_tx;
 	struct ifobject *ifobj_rx = test->ifobj_rx;
-	bool bidi = test_type == TEST_TYPE_BIDI;
-	bool bpf = test_type == TEST_TYPE_BPF_RES;
 	struct pkt_stream *pkt_stream;
 
 	if (pthread_barrier_init(&barr, NULL, 2))
@@ -907,21 +906,17 @@ static void testapp_validate_traffic(struct test_spec *test)
 
 	pthread_join(t1, NULL);
 	pthread_join(t0, NULL);
-
-	if (!(test_type == TEST_TYPE_TEARDOWN) && !bidi && !bpf && !(test_type == TEST_TYPE_STATS))
-		print_ksft_result();
 }
 
 static void testapp_teardown(struct test_spec *test)
 {
 	int i;
 
+	test_spec_set_name(test, "TEARDOWN");
 	for (i = 0; i < MAX_TEARDOWN_ITER; i++) {
 		testapp_validate_traffic(test);
 		test_spec_reset(test);
 	}
-
-	print_ksft_result();
 }
 
 static void swap_directions(struct ifobject **ifobj1, struct ifobject **ifobj2)
@@ -942,6 +937,7 @@ static void swap_directions(struct ifobject **ifobj1, struct ifobject **ifobj2)
 
 static void testapp_bidi(struct test_spec *test)
 {
+	test_spec_set_name(test, "BIDIRECTIONAL");
 	for (int i = 0; i < MAX_BIDI_ITER; i++) {
 		print_verbose("Creating socket\n");
 		testapp_validate_traffic(test);
@@ -953,8 +949,6 @@ static void testapp_bidi(struct test_spec *test)
 	}
 
 	swap_directions(&test->ifobj_rx, &test->ifobj_tx);
-
-	print_ksft_result();
 }
 
 static void swap_xsk_resources(struct ifobject *ifobj_tx, struct ifobject *ifobj_rx)
@@ -973,6 +967,7 @@ static void testapp_bpf_res(struct test_spec *test)
 {
 	int i;
 
+	test_spec_set_name(test, "BPF_RES");
 	for (i = 0; i < MAX_BPF_ITER; i++) {
 		print_verbose("Creating socket\n");
 		testapp_validate_traffic(test);
@@ -980,8 +975,6 @@ static void testapp_bpf_res(struct test_spec *test)
 			swap_xsk_resources(test->ifobj_tx, test->ifobj_rx);
 		second_step = true;
 	}
-
-	print_ksft_result();
 }
 
 static void testapp_stats(struct test_spec *test)
@@ -992,21 +985,28 @@ static void testapp_stats(struct test_spec *test)
 
 		switch (stat_test_type) {
 		case STAT_TEST_RX_DROPPED:
+			test_spec_set_name(test, "STAT_RX_DROPPED");
 			test->ifobj_rx->umem->frame_headroom = test->ifobj_rx->umem->frame_size -
 				XDP_PACKET_HEADROOM - 1;
 			break;
 		case STAT_TEST_RX_FULL:
+			test_spec_set_name(test, "STAT_RX_FULL");
 			test->ifobj_rx->xsk->rxqsize = RX_FULL_RXQSIZE;
 			break;
 		case STAT_TEST_TX_INVALID:
+			test_spec_set_name(test, "STAT_TX_INVALID");
 			continue;
+		case STAT_TEST_RX_FILL_EMPTY:
+			test_spec_set_name(test, "STAT_RX_FILL_EMPTY");
+			break;
 		default:
 			break;
 		}
 		testapp_validate_traffic(test);
 	}
 
-	print_ksft_result();
+	/* To only see the whole stat set being completed unless an individual test fails. */
+	test_spec_set_name(test, "STATS");
 }
 
 static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char *src_mac,
@@ -1066,10 +1066,19 @@ static void run_pkt_test(struct test_spec *test, int mode, int type)
 	case TEST_TYPE_BPF_RES:
 		testapp_bpf_res(test);
 		break;
-	default:
+	case TEST_TYPE_NOPOLL:
+		test_spec_set_name(test, "RUN_TO_COMPLETION");
+		testapp_validate_traffic(test);
+		break;
+	case TEST_TYPE_POLL:
+		test_spec_set_name(test, "POLL");
 		testapp_validate_traffic(test);
 		break;
+	default:
+		break;
 	}
+
+	print_ksft_result(test);
 }
 
 static struct ifobject *ifobject_create(void)
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index bfd14190abfc..15eab31b3b32 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -22,6 +22,7 @@
 #define MAX_INTERFACES_NAMESPACE_CHARS 10
 #define MAX_SOCKS 1
 #define MAX_SOCKETS 2
+#define MAX_TEST_NAME_SIZE 32
 #define MAX_TEARDOWN_ITER 10
 #define MAX_BIDI_ITER 2
 #define MAX_BPF_ITER 2
@@ -141,6 +142,7 @@ struct ifobject {
 struct test_spec {
 	struct ifobject *ifobj_tx;
 	struct ifobject *ifobj_rx;
+	char name[MAX_TEST_NAME_SIZE];
 };
 
 /*threads*/
-- 
cgit v1.2.3


From 119d4b02feb5c3c5045f0b42a6c48d853ab40917 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:16 +0200
Subject: selftests: xsk: Add use_poll to ifobject

Add a use_poll option to the ifobject so that we do not need to use a
test specific if-statement in the test runner.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-9-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 5 ++++-
 tools/testing/selftests/bpf/xdpxceiver.h | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 8ef58081d4d2..9a98c45933c5 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -393,6 +393,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 
 		ifobj->umem = &ifobj->umem_arr[0];
 		ifobj->xsk = &ifobj->xsk_arr[0];
+		ifobj->use_poll = false;
 
 		if (i == tx)
 			ifobj->fv.vector = tx;
@@ -684,7 +685,7 @@ static void send_pkts(struct ifobject *ifobject)
 	while (pkt_cnt < ifobject->pkt_stream->nb_pkts) {
 		u32 sent;
 
-		if (test_type == TEST_TYPE_POLL) {
+		if (ifobject->use_poll) {
 			int ret;
 
 			ret = poll(fds, 1, POLL_TMOUT);
@@ -1071,6 +1072,8 @@ static void run_pkt_test(struct test_spec *test, int mode, int type)
 		testapp_validate_traffic(test);
 		break;
 	case TEST_TYPE_POLL:
+		test->ifobj_tx->use_poll = true;
+		test->ifobj_rx->use_poll = true;
 		test_spec_set_name(test, "POLL");
 		testapp_validate_traffic(test);
 		break;
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 15eab31b3b32..e02a4dd71bfb 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -135,6 +135,7 @@ struct ifobject {
 	u32 src_ip;
 	u16 src_port;
 	u16 dst_port;
+	bool use_poll;
 	u8 dst_mac[ETH_ALEN];
 	u8 src_mac[ETH_ALEN];
 };
-- 
cgit v1.2.3


From 1856c24db0a8c51122b7b87909a98f379309ff69 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:17 +0200
Subject: selftests: xsk: Introduce rx_on and tx_on in ifobject

Introduce rx_on and tx_on in the ifobject so that we can describe if
the thread should create a socket with only tx, rx, or both. This
eliminates some test specific if statements from the code. We can also
eliminate the flow vector structure now as this is fully specified
by the tx_on and rx_on variables.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-10-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 34 +++++++++++++-------------------
 tools/testing/selftests/bpf/xdpxceiver.h | 10 ++--------
 2 files changed, 16 insertions(+), 28 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 9a98c45933c5..a896d5845c0e 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -278,14 +278,8 @@ static int xsk_configure_socket(struct xsk_socket_info *xsk, struct xsk_umem_inf
 	cfg.xdp_flags = xdp_flags;
 	cfg.bind_flags = xdp_bind_flags;
 
-	if (test_type != TEST_TYPE_BIDI) {
-		rxr = (ifobject->fv.vector == rx) ? &xsk->rx : NULL;
-		txr = (ifobject->fv.vector == tx) ? &xsk->tx : NULL;
-	} else {
-		rxr = &xsk->rx;
-		txr = &xsk->tx;
-	}
-
+	txr = ifobject->tx_on ? &xsk->tx : NULL;
+	rxr = ifobject->rx_on ? &xsk->rx : NULL;
 	return xsk_socket__create(&xsk->xsk, ifobject->ifname, qid, umem->umem, rxr, txr, &cfg);
 }
 
@@ -395,10 +389,13 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 		ifobj->xsk = &ifobj->xsk_arr[0];
 		ifobj->use_poll = false;
 
-		if (i == tx)
-			ifobj->fv.vector = tx;
-		else
-			ifobj->fv.vector = rx;
+		if (i == 0) {
+			ifobj->rx_on = false;
+			ifobj->tx_on = true;
+		} else {
+			ifobj->rx_on = true;
+			ifobj->tx_on = false;
+		}
 
 		for (j = 0; j < MAX_SOCKETS; j++) {
 			memset(&ifobj->umem_arr[j], 0, sizeof(ifobj->umem_arr[j]));
@@ -923,14 +920,10 @@ static void testapp_teardown(struct test_spec *test)
 static void swap_directions(struct ifobject **ifobj1, struct ifobject **ifobj2)
 {
 	thread_func_t tmp_func_ptr = (*ifobj1)->func_ptr;
-	enum fvector tmp_vector = (*ifobj1)->fv.vector;
 	struct ifobject *tmp_ifobj = (*ifobj1);
 
 	(*ifobj1)->func_ptr = (*ifobj2)->func_ptr;
-	(*ifobj1)->fv.vector = (*ifobj2)->fv.vector;
-
 	(*ifobj2)->func_ptr = tmp_func_ptr;
-	(*ifobj2)->fv.vector = tmp_vector;
 
 	*ifobj1 = *ifobj2;
 	*ifobj2 = tmp_ifobj;
@@ -939,6 +932,8 @@ static void swap_directions(struct ifobject **ifobj1, struct ifobject **ifobj2)
 static void testapp_bidi(struct test_spec *test)
 {
 	test_spec_set_name(test, "BIDIRECTIONAL");
+	test->ifobj_tx->rx_on = true;
+	test->ifobj_rx->tx_on = true;
 	for (int i = 0; i < MAX_BIDI_ITER; i++) {
 		print_verbose("Creating socket\n");
 		testapp_validate_traffic(test);
@@ -1012,7 +1007,7 @@ static void testapp_stats(struct test_spec *test)
 
 static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char *src_mac,
 		       const char *dst_ip, const char *src_ip, const u16 dst_port,
-		       const u16 src_port, enum fvector vector, thread_func_t func_ptr)
+		       const u16 src_port, thread_func_t func_ptr)
 {
 	struct in_addr ip;
 
@@ -1028,7 +1023,6 @@ static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char *
 	ifobj->dst_port = dst_port;
 	ifobj->src_port = src_port;
 
-	ifobj->fv.vector = vector;
 	ifobj->func_ptr = func_ptr;
 }
 
@@ -1144,9 +1138,9 @@ int main(int argc, char **argv)
 		ksft_exit_xfail();
 	}
 
-	init_iface(ifobj_tx, MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx,
+	init_iface(ifobj_tx, MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2,
 		   worker_testapp_validate_tx);
-	init_iface(ifobj_rx, MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx,
+	init_iface(ifobj_rx, MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1,
 		   worker_testapp_validate_rx);
 
 	ksft_set_plan(TEST_MODE_MAX * TEST_TYPE_MAX);
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index e02a4dd71bfb..03ff52897d7b 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -100,13 +100,6 @@ struct xsk_socket_info {
 	u32 rxqsize;
 };
 
-struct flow_vector {
-	enum fvector {
-		tx,
-		rx,
-	} vector;
-};
-
 struct pkt {
 	u64 addr;
 	u32 len;
@@ -127,7 +120,6 @@ struct ifobject {
 	struct xsk_socket_info *xsk_arr;
 	struct xsk_umem_info *umem;
 	struct xsk_umem_info *umem_arr;
-	struct flow_vector fv;
 	thread_func_t func_ptr;
 	struct pkt_stream *pkt_stream;
 	int ns_fd;
@@ -135,6 +127,8 @@ struct ifobject {
 	u32 src_ip;
 	u16 src_port;
 	u16 dst_port;
+	bool tx_on;
+	bool rx_on;
 	bool use_poll;
 	u8 dst_mac[ETH_ALEN];
 	u8 src_mac[ETH_ALEN];
-- 
cgit v1.2.3


From 55be575dc13ccfc9bf27ebb5af938b70206a9eb5 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:18 +0200
Subject: selftests: xsk: Replace second_step global variable

Replace the second_step global variable with a test specification
variable called total_steps that a test can be set to indicate how
many times the packet stream should be sent without reinitializing any
sockets. This eliminates test specific code in the test runner around
the bidirectional test.

The total_steps variable is 1 by default as most tests only need a
single round of packets.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-11-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 77 ++++++++++++++------------------
 tools/testing/selftests/bpf/xdpxceiver.h |  4 +-
 2 files changed, 36 insertions(+), 45 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index a896d5845c0e..0a3e28c9e2a9 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -408,6 +408,8 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 
 	test->ifobj_tx = ifobj_tx;
 	test->ifobj_rx = ifobj_rx;
+	test->current_step = 0;
+	test->total_steps = 1;
 }
 
 static void test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
@@ -713,7 +715,7 @@ static bool rx_stats_are_valid(struct ifobject *ifobject)
 	optlen = sizeof(stats);
 	err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, &stats, &optlen);
 	if (err) {
-		ksft_test_result_fail("ERROR: [%s] getsockopt(XDP_STATISTICS) error %u %s\n",
+		ksft_test_result_fail("ERROR Rx: [%s] getsockopt(XDP_STATISTICS) error %u %s\n",
 				      __func__, -err, strerror(-err));
 		return true;
 	}
@@ -754,7 +756,7 @@ static void tx_stats_validate(struct ifobject *ifobject)
 	optlen = sizeof(stats);
 	err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, &stats, &optlen);
 	if (err) {
-		ksft_test_result_fail("ERROR: [%s] getsockopt(XDP_STATISTICS) error %u %s\n",
+		ksft_test_result_fail("ERROR Tx: [%s] getsockopt(XDP_STATISTICS) error %u %s\n",
 				      __func__, -err, strerror(-err));
 		return;
 	}
@@ -766,12 +768,13 @@ static void tx_stats_validate(struct ifobject *ifobject)
 			      __func__, stats.tx_invalid_descs, ifobject->pkt_stream->nb_pkts);
 }
 
-static void thread_common_ops(struct ifobject *ifobject, void *bufs)
+static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
 {
 	u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
 	int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
 	size_t mmap_sz = umem_sz;
 	int ctr = 0, ret;
+	void *bufs;
 
 	ifobject->ns_fd = switch_namespace(ifobject->nsname);
 
@@ -813,26 +816,19 @@ static void thread_common_ops(struct ifobject *ifobject, void *bufs)
 	ifobject->xsk = &ifobject->xsk_arr[0];
 }
 
-static bool testapp_is_test_two_stepped(void)
-{
-	return (test_type != TEST_TYPE_BIDI && test_type != TEST_TYPE_BPF_RES) || second_step;
-}
-
 static void testapp_cleanup_xsk_res(struct ifobject *ifobj)
 {
-	if (testapp_is_test_two_stepped()) {
-		xsk_socket__delete(ifobj->xsk->xsk);
-		(void)xsk_umem__delete(ifobj->umem->umem);
-	}
+	xsk_socket__delete(ifobj->xsk->xsk);
+	xsk_umem__delete(ifobj->umem->umem);
 }
 
 static void *worker_testapp_validate_tx(void *arg)
 {
-	struct ifobject *ifobject = (struct ifobject *)arg;
-	void *bufs = NULL;
+	struct test_spec *test = (struct test_spec *)arg;
+	struct ifobject *ifobject = test->ifobj_tx;
 
-	if (!second_step)
-		thread_common_ops(ifobject, bufs);
+	if (test->current_step == 1)
+		thread_common_ops(test, ifobject);
 
 	print_verbose("Sending %d packets on interface %s\n", ifobject->pkt_stream->nb_pkts,
 		      ifobject->ifname);
@@ -841,18 +837,19 @@ static void *worker_testapp_validate_tx(void *arg)
 	if (stat_test_type == STAT_TEST_TX_INVALID)
 		tx_stats_validate(ifobject);
 
-	testapp_cleanup_xsk_res(ifobject);
+	if (test->total_steps == test->current_step)
+		testapp_cleanup_xsk_res(ifobject);
 	pthread_exit(NULL);
 }
 
 static void *worker_testapp_validate_rx(void *arg)
 {
-	struct ifobject *ifobject = (struct ifobject *)arg;
+	struct test_spec *test = (struct test_spec *)arg;
+	struct ifobject *ifobject = test->ifobj_rx;
 	struct pollfd fds[MAX_SOCKS] = { };
-	void *bufs = NULL;
 
-	if (!second_step)
-		thread_common_ops(ifobject, bufs);
+	if (test->current_step == 1)
+		thread_common_ops(test, ifobject);
 
 	if (stat_test_type != STAT_TEST_RX_FILL_EMPTY)
 		xsk_populate_fill_ring(ifobject->umem);
@@ -871,7 +868,8 @@ static void *worker_testapp_validate_rx(void *arg)
 	if (test_type == TEST_TYPE_TEARDOWN)
 		print_verbose("Destroying socket\n");
 
-	testapp_cleanup_xsk_res(ifobject);
+	if (test->total_steps == test->current_step)
+		testapp_cleanup_xsk_res(ifobject);
 	pthread_exit(NULL);
 }
 
@@ -891,16 +889,17 @@ static void testapp_validate_traffic(struct test_spec *test)
 		pkt_stream = pkt_stream_generate(test->ifobj_tx->umem, DEFAULT_PKT_CNT, PKT_SIZE);
 	ifobj_tx->pkt_stream = pkt_stream;
 	ifobj_rx->pkt_stream = pkt_stream;
+	test->current_step++;
 
 	/*Spawn RX thread */
-	pthread_create(&t0, NULL, ifobj_rx->func_ptr, ifobj_rx);
+	pthread_create(&t0, NULL, ifobj_rx->func_ptr, test);
 
 	pthread_barrier_wait(&barr);
 	if (pthread_barrier_destroy(&barr))
 		exit_with_error(errno);
 
 	/*Spawn TX thread */
-	pthread_create(&t1, NULL, ifobj_tx->func_ptr, ifobj_tx);
+	pthread_create(&t1, NULL, ifobj_tx->func_ptr, test);
 
 	pthread_join(t1, NULL);
 	pthread_join(t0, NULL);
@@ -934,15 +933,12 @@ static void testapp_bidi(struct test_spec *test)
 	test_spec_set_name(test, "BIDIRECTIONAL");
 	test->ifobj_tx->rx_on = true;
 	test->ifobj_rx->tx_on = true;
-	for (int i = 0; i < MAX_BIDI_ITER; i++) {
-		print_verbose("Creating socket\n");
-		testapp_validate_traffic(test);
-		if (!second_step) {
-			print_verbose("Switching Tx/Rx vectors\n");
-			swap_directions(&test->ifobj_rx, &test->ifobj_tx);
-		}
-		second_step = true;
-	}
+	test->total_steps = 2;
+	testapp_validate_traffic(test);
+
+	print_verbose("Switching Tx/Rx vectors\n");
+	swap_directions(&test->ifobj_rx, &test->ifobj_tx);
+	testapp_validate_traffic(test);
 
 	swap_directions(&test->ifobj_rx, &test->ifobj_tx);
 }
@@ -961,16 +957,12 @@ static void swap_xsk_resources(struct ifobject *ifobj_tx, struct ifobject *ifobj
 
 static void testapp_bpf_res(struct test_spec *test)
 {
-	int i;
-
 	test_spec_set_name(test, "BPF_RES");
-	for (i = 0; i < MAX_BPF_ITER; i++) {
-		print_verbose("Creating socket\n");
-		testapp_validate_traffic(test);
-		if (!second_step)
-			swap_xsk_resources(test->ifobj_tx, test->ifobj_rx);
-		second_step = true;
-	}
+	test->total_steps = 2;
+	testapp_validate_traffic(test);
+
+	swap_xsk_resources(test->ifobj_tx, test->ifobj_rx);
+	testapp_validate_traffic(test);
 }
 
 static void testapp_stats(struct test_spec *test)
@@ -1032,7 +1024,6 @@ static void run_pkt_test(struct test_spec *test, int mode, int type)
 
 	/* reset defaults after potential previous test */
 	xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
-	second_step = 0;
 	stat_test_type = -1;
 
 	configured_mode = mode;
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 03ff52897d7b..ea505a4cb8c0 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -24,7 +24,6 @@
 #define MAX_SOCKETS 2
 #define MAX_TEST_NAME_SIZE 32
 #define MAX_TEARDOWN_ITER 10
-#define MAX_BIDI_ITER 2
 #define MAX_BPF_ITER 2
 #define PKT_HDR_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) + \
 			sizeof(struct udphdr))
@@ -72,7 +71,6 @@ enum stat_test_type {
 
 static int configured_mode;
 static bool opt_pkt_dump;
-static bool second_step;
 static int test_type;
 
 static bool opt_verbose;
@@ -137,6 +135,8 @@ struct ifobject {
 struct test_spec {
 	struct ifobject *ifobj_tx;
 	struct ifobject *ifobj_rx;
+	u16 total_steps;
+	u16 current_step;
 	char name[MAX_TEST_NAME_SIZE];
 };
 
-- 
cgit v1.2.3


From 85c6c95739703620abb75e5fcc46ad3068c50f48 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:19 +0200
Subject: selftests: xsk: Specify number of sockets to create

Add the ability in the test specification to specify numbers of
sockets to create. The default is one socket. This is then used to
remove test specific if-statements around the bpf_res tests.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-12-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 59 ++++++++++++++------------------
 tools/testing/selftests/bpf/xdpxceiver.h |  2 +-
 2 files changed, 27 insertions(+), 34 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 0a3e28c9e2a9..06fa767191af 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -231,7 +231,7 @@ static void gen_udp_csum(struct udphdr *udp_hdr, struct iphdr *ip_hdr)
 	    udp_csum(ip_hdr->saddr, ip_hdr->daddr, UDP_PKT_SIZE, IPPROTO_UDP, (u16 *)udp_hdr);
 }
 
-static int xsk_configure_umem(struct xsk_umem_info *umem, void *buffer, u64 size, int idx)
+static int xsk_configure_umem(struct xsk_umem_info *umem, void *buffer, u64 size)
 {
 	struct xsk_umem_config cfg = {
 		.fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS,
@@ -410,6 +410,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 	test->ifobj_rx = ifobj_rx;
 	test->current_step = 0;
 	test->total_steps = 1;
+	test->nb_sockets = 1;
 }
 
 static void test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
@@ -770,46 +771,37 @@ static void tx_stats_validate(struct ifobject *ifobject)
 
 static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
 {
-	u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
-	int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
-	size_t mmap_sz = umem_sz;
-	int ctr = 0, ret;
-	void *bufs;
+	u32 i;
 
 	ifobject->ns_fd = switch_namespace(ifobject->nsname);
 
-	if (test_type == TEST_TYPE_BPF_RES)
-		mmap_sz *= 2;
-
-	bufs = mmap(NULL, mmap_sz, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
-	if (bufs == MAP_FAILED)
-		exit_with_error(errno);
+	for (i = 0; i < test->nb_sockets; i++) {
+		u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
+		int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
+		u32 ctr = 0;
+		void *bufs;
 
-	while (ctr++ < SOCK_RECONF_CTR) {
-		ret = xsk_configure_umem(&ifobject->umem_arr[0], bufs, umem_sz, 0);
-		if (ret)
-			exit_with_error(-ret);
+		bufs = mmap(NULL, umem_sz, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
+		if (bufs == MAP_FAILED)
+			exit_with_error(errno);
 
-		ret = xsk_configure_socket(&ifobject->xsk_arr[0], &ifobject->umem_arr[0],
-					   ifobject, 0);
-		if (!ret)
-			break;
+		while (ctr++ < SOCK_RECONF_CTR) {
+			int ret;
 
-		/* Retry Create Socket if it fails as xsk_socket__create() is asynchronous */
-		if (ctr >= SOCK_RECONF_CTR)
-			exit_with_error(-ret);
-		usleep(USLEEP_MAX);
-	}
+			ret = xsk_configure_umem(&ifobject->umem_arr[i], bufs, umem_sz);
+			if (ret)
+				exit_with_error(-ret);
 
-	if (test_type == TEST_TYPE_BPF_RES) {
-		ret = xsk_configure_umem(&ifobject->umem_arr[1], (u8 *)bufs + umem_sz, umem_sz, 1);
-		if (ret)
-			exit_with_error(-ret);
+			ret = xsk_configure_socket(&ifobject->xsk_arr[i], &ifobject->umem_arr[i],
+						   ifobject, i);
+			if (!ret)
+				break;
 
-		ret = xsk_configure_socket(&ifobject->xsk_arr[1], &ifobject->umem_arr[1],
-					   ifobject, 1);
-		if (ret)
-			exit_with_error(-ret);
+			/* Retry if it fails as xsk_socket__create() is asynchronous */
+			if (ctr >= SOCK_RECONF_CTR)
+				exit_with_error(-ret);
+			usleep(USLEEP_MAX);
+		}
 	}
 
 	ifobject->umem = &ifobject->umem_arr[0];
@@ -959,6 +951,7 @@ static void testapp_bpf_res(struct test_spec *test)
 {
 	test_spec_set_name(test, "BPF_RES");
 	test->total_steps = 2;
+	test->nb_sockets = 2;
 	testapp_validate_traffic(test);
 
 	swap_xsk_resources(test->ifobj_tx, test->ifobj_rx);
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index ea505a4cb8c0..c09b73fd9878 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -24,7 +24,6 @@
 #define MAX_SOCKETS 2
 #define MAX_TEST_NAME_SIZE 32
 #define MAX_TEARDOWN_ITER 10
-#define MAX_BPF_ITER 2
 #define PKT_HDR_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) + \
 			sizeof(struct udphdr))
 #define MIN_PKT_SIZE 64
@@ -137,6 +136,7 @@ struct test_spec {
 	struct ifobject *ifobj_rx;
 	u16 total_steps;
 	u16 current_step;
+	u16 nb_sockets;
 	char name[MAX_TEST_NAME_SIZE];
 };
 
-- 
cgit v1.2.3


From af6731d1e1c69b4ee32063acd51ec86ece0a1ced Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:20 +0200
Subject: selftests: xsk: Make xdp_flags and bind_flags local

Make xdp_flags and bind_flags local instead of global by moving them
into the interface object. These flags decide if the socket should be
created in SKB mode or in DRV mode and therefore they are sticky and
will survive a test_spec_reset. Since every test is first run in SKB
mode then in DRV mode, this change only happens once. With this
change, the configured_mode global variable can also be
erradicated. The first test_spec_init() also becomes superfluous and
can be eliminated.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-13-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 57 ++++++++++++++++----------------
 tools/testing/selftests/bpf/xdpxceiver.h |  6 ++--
 2 files changed, 31 insertions(+), 32 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 06fa767191af..3a1afece7c2c 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -112,9 +112,10 @@ static void __exit_with_error(int error, const char *file, const char *func, int
 
 #define exit_with_error(error) __exit_with_error(error, __FILE__, __func__, __LINE__)
 
-#define print_ksft_result(test)\
-	(ksft_test_result_pass("PASS: %s %s\n", configured_mode ? "DRV" : "SKB", \
-			       (test)->name))
+#define mode_string(test) (test)->ifobj_tx->xdp_flags & XDP_FLAGS_SKB_MODE ? "SKB" : "DRV"
+
+#define print_ksft_result(test)						\
+	(ksft_test_result_pass("PASS: %s %s\n", mode_string(test), (test)->name))
 
 static void memset32_htonl(void *dest, u32 val, u32 size)
 {
@@ -275,8 +276,8 @@ static int xsk_configure_socket(struct xsk_socket_info *xsk, struct xsk_umem_inf
 	cfg.rx_size = xsk->rxqsize;
 	cfg.tx_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
 	cfg.libbpf_flags = 0;
-	cfg.xdp_flags = xdp_flags;
-	cfg.bind_flags = xdp_bind_flags;
+	cfg.xdp_flags = ifobject->xdp_flags;
+	cfg.bind_flags = ifobject->bind_flags;
 
 	txr = ifobject->tx_on ? &xsk->tx : NULL;
 	rxr = ifobject->rx_on ? &xsk->rx : NULL;
@@ -333,7 +334,8 @@ static bool validate_interface(struct ifobject *ifobj)
 	return true;
 }
 
-static void parse_command_line(struct test_spec *test, int argc, char **argv)
+static void parse_command_line(struct ifobject *ifobj_tx, struct ifobject *ifobj_rx, int argc,
+			       char **argv)
 {
 	struct ifobject *ifobj;
 	u32 interface_nb = 0;
@@ -351,9 +353,9 @@ static void parse_command_line(struct test_spec *test, int argc, char **argv)
 		switch (c) {
 		case 'i':
 			if (interface_nb == 0)
-				ifobj = test->ifobj_tx;
+				ifobj = ifobj_tx;
 			else if (interface_nb == 1)
-				ifobj = test->ifobj_rx;
+				ifobj = ifobj_rx;
 			else
 				break;
 
@@ -414,9 +416,24 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 }
 
 static void test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
-			   struct ifobject *ifobj_rx)
+			   struct ifobject *ifobj_rx, enum test_mode mode)
 {
+	u32 i;
+
 	memset(test, 0, sizeof(*test));
+
+	for (i = 0; i < MAX_INTERFACES; i++) {
+		struct ifobject *ifobj = i ? ifobj_rx : ifobj_tx;
+
+		ifobj->xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+		if (mode == TEST_MODE_SKB)
+			ifobj->xdp_flags |= XDP_FLAGS_SKB_MODE;
+		else
+			ifobj->xdp_flags |= XDP_FLAGS_DRV_MODE;
+
+		ifobj->bind_flags = XDP_USE_NEED_WAKEUP | XDP_COPY;
+	}
+
 	__test_spec_init(test, ifobj_tx, ifobj_rx);
 }
 
@@ -1011,27 +1028,13 @@ static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char *
 	ifobj->func_ptr = func_ptr;
 }
 
-static void run_pkt_test(struct test_spec *test, int mode, int type)
+static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_type type)
 {
 	test_type = type;
 
 	/* reset defaults after potential previous test */
-	xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
 	stat_test_type = -1;
 
-	configured_mode = mode;
-
-	switch (mode) {
-	case (TEST_MODE_SKB):
-		xdp_flags |= XDP_FLAGS_SKB_MODE;
-		break;
-	case (TEST_MODE_DRV):
-		xdp_flags |= XDP_FLAGS_DRV_MODE;
-		break;
-	default:
-		break;
-	}
-
 	switch (test_type) {
 	case TEST_TYPE_STATS:
 		testapp_stats(test);
@@ -1111,11 +1114,9 @@ int main(int argc, char **argv)
 	if (!ifobj_rx)
 		exit_with_error(ENOMEM);
 
-	test_spec_init(&test, ifobj_tx, ifobj_rx);
-
 	setlocale(LC_ALL, "");
 
-	parse_command_line(&test, argc, argv);
+	parse_command_line(ifobj_tx, ifobj_rx, argc, argv);
 
 	if (!validate_interface(ifobj_tx) || !validate_interface(ifobj_rx)) {
 		usage(basename(argv[0]));
@@ -1131,7 +1132,7 @@ int main(int argc, char **argv)
 
 	for (i = 0; i < TEST_MODE_MAX; i++)
 		for (j = 0; j < TEST_TYPE_MAX; j++) {
-			test_spec_init(&test, ifobj_tx, ifobj_rx);
+			test_spec_init(&test, ifobj_tx, ifobj_rx, i);
 			run_pkt_test(&test, i, j);
 			usleep(USLEEP_MAX);
 		}
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index c09b73fd9878..7ed16128f2ad 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -68,14 +68,10 @@ enum stat_test_type {
 	STAT_TEST_TYPE_MAX
 };
 
-static int configured_mode;
 static bool opt_pkt_dump;
 static int test_type;
 
 static bool opt_verbose;
-
-static u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
-static u32 xdp_bind_flags = XDP_USE_NEED_WAKEUP | XDP_COPY;
 static int stat_test_type;
 
 struct xsk_umem_info {
@@ -122,6 +118,8 @@ struct ifobject {
 	int ns_fd;
 	u32 dst_ip;
 	u32 src_ip;
+	u32 xdp_flags;
+	u32 bind_flags;
 	u16 src_port;
 	u16 dst_port;
 	bool tx_on;
-- 
cgit v1.2.3


From e2d850d5346c3cd751b032a7dccdd472013b8a84 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:21 +0200
Subject: selftests: xsx: Make pthreads local scope

Make the pthread_t variables local scope instead of global. No reason
for them to be global.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-14-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 1 +
 tools/testing/selftests/bpf/xdpxceiver.h | 2 --
 2 files changed, 1 insertion(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 3a1afece7c2c..5ea78c503741 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -887,6 +887,7 @@ static void testapp_validate_traffic(struct test_spec *test)
 	struct ifobject *ifobj_tx = test->ifobj_tx;
 	struct ifobject *ifobj_rx = test->ifobj_rx;
 	struct pkt_stream *pkt_stream;
+	pthread_t t0, t1;
 
 	if (pthread_barrier_init(&barr, NULL, 2))
 		exit_with_error(errno);
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 7ed16128f2ad..34ae4e4ea4ac 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -138,8 +138,6 @@ struct test_spec {
 	char name[MAX_TEST_NAME_SIZE];
 };
 
-/*threads*/
 pthread_barrier_t barr;
-pthread_t t0, t1;
 
 #endif				/* XDPXCEIVER_H */
-- 
cgit v1.2.3


From 8ce7192b508df2c54932e245bbc6ce04cfe174a7 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:22 +0200
Subject: selftests: xsk: Eliminate MAX_SOCKS define

Remove the MAX_SOCKS define as it always will be one for the forseable
future and the code does not work for any other case anyway.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-15-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 18 +++++++++---------
 tools/testing/selftests/bpf/xdpxceiver.h |  1 -
 2 files changed, 9 insertions(+), 10 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 5ea78c503741..0fb5cae974de 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -693,11 +693,11 @@ static void wait_for_tx_completion(struct xsk_socket_info *xsk)
 
 static void send_pkts(struct ifobject *ifobject)
 {
-	struct pollfd fds[MAX_SOCKS] = { };
+	struct pollfd fds = { };
 	u32 pkt_cnt = 0;
 
-	fds[0].fd = xsk_socket__fd(ifobject->xsk->xsk);
-	fds[0].events = POLLOUT;
+	fds.fd = xsk_socket__fd(ifobject->xsk->xsk);
+	fds.events = POLLOUT;
 
 	while (pkt_cnt < ifobject->pkt_stream->nb_pkts) {
 		u32 sent;
@@ -705,11 +705,11 @@ static void send_pkts(struct ifobject *ifobject)
 		if (ifobject->use_poll) {
 			int ret;
 
-			ret = poll(fds, 1, POLL_TMOUT);
+			ret = poll(&fds, 1, POLL_TMOUT);
 			if (ret <= 0)
 				continue;
 
-			if (!(fds[0].revents & POLLOUT))
+			if (!(fds.revents & POLLOUT))
 				continue;
 		}
 
@@ -855,7 +855,7 @@ static void *worker_testapp_validate_rx(void *arg)
 {
 	struct test_spec *test = (struct test_spec *)arg;
 	struct ifobject *ifobject = test->ifobj_rx;
-	struct pollfd fds[MAX_SOCKS] = { };
+	struct pollfd fds = { };
 
 	if (test->current_step == 1)
 		thread_common_ops(test, ifobject);
@@ -863,8 +863,8 @@ static void *worker_testapp_validate_rx(void *arg)
 	if (stat_test_type != STAT_TEST_RX_FILL_EMPTY)
 		xsk_populate_fill_ring(ifobject->umem);
 
-	fds[0].fd = xsk_socket__fd(ifobject->xsk->xsk);
-	fds[0].events = POLLIN;
+	fds.fd = xsk_socket__fd(ifobject->xsk->xsk);
+	fds.events = POLLIN;
 
 	pthread_barrier_wait(&barr);
 
@@ -872,7 +872,7 @@ static void *worker_testapp_validate_rx(void *arg)
 		while (!rx_stats_are_valid(ifobject))
 			continue;
 	else
-		receive_pkts(ifobject->pkt_stream, ifobject->xsk, fds);
+		receive_pkts(ifobject->pkt_stream, ifobject->xsk, &fds);
 
 	if (test_type == TEST_TYPE_TEARDOWN)
 		print_verbose("Destroying socket\n");
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 34ae4e4ea4ac..1e9a563380c8 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -20,7 +20,6 @@
 #define MAX_INTERFACES 2
 #define MAX_INTERFACE_NAME_CHARS 7
 #define MAX_INTERFACES_NAMESPACE_CHARS 10
-#define MAX_SOCKS 1
 #define MAX_SOCKETS 2
 #define MAX_TEST_NAME_SIZE 32
 #define MAX_TEARDOWN_ITER 10
-- 
cgit v1.2.3


From 8abf6f725a9e50cf8e8bd44edb2a577d98f0d775 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:23 +0200
Subject: selftests: xsk: Allow for invalid packets

Allow for invalid packets to be sent. These are verified by the Rx
thread not to be received. Or put in another way, if they are
received, the test will fail. This feature will be used to eliminate
an if statement for a stats test and will also be used by other tests
in later patches. The previous code could only deal with valid
packets.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-16-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 16 ++++++++++------
 tools/testing/selftests/bpf/xdpxceiver.h |  1 +
 2 files changed, 11 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 0fb5cae974de..09d2854c10e6 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -473,6 +473,11 @@ static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb
 		pkt_stream->pkts[i].addr = (i % umem->num_frames) * umem->frame_size;
 		pkt_stream->pkts[i].len = pkt_len;
 		pkt_stream->pkts[i].payload = i;
+
+		if (pkt_len > umem->frame_size)
+			pkt_stream->pkts[i].valid = false;
+		else
+			pkt_stream->pkts[i].valid = true;
 	}
 
 	return pkt_stream;
@@ -658,7 +663,7 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 static u32 __send_pkts(struct ifobject *ifobject, u32 pkt_nb)
 {
 	struct xsk_socket_info *xsk = ifobject->xsk;
-	u32 i, idx;
+	u32 i, idx, valid_pkts = 0;
 
 	while (xsk_ring_prod__reserve(&xsk->tx, BATCH_SIZE, &idx) < BATCH_SIZE)
 		complete_pkts(xsk, BATCH_SIZE);
@@ -673,14 +678,13 @@ static u32 __send_pkts(struct ifobject *ifobject, u32 pkt_nb)
 		tx_desc->addr = pkt->addr;
 		tx_desc->len = pkt->len;
 		pkt_nb++;
+		if (pkt->valid)
+			valid_pkts++;
 	}
 
 	xsk_ring_prod__submit(&xsk->tx, i);
-	if (stat_test_type != STAT_TEST_TX_INVALID)
-		xsk->outstanding_tx += i;
-	else if (xsk_ring_prod__needs_wakeup(&xsk->tx))
-		kick_tx(xsk);
-	complete_pkts(xsk, i);
+	xsk->outstanding_tx += valid_pkts;
+	complete_pkts(xsk, BATCH_SIZE);
 
 	return i;
 }
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 1e9a563380c8..c5baa7c5f560 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -96,6 +96,7 @@ struct pkt {
 	u64 addr;
 	u32 len;
 	u32 payload;
+	bool valid;
 };
 
 struct pkt_stream {
-- 
cgit v1.2.3


From 605091c5100ddc1ae0d67a74b688d8755658d3c9 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:24 +0200
Subject: selftests: xsk: Introduce replacing the default packet stream

Introduce the concept of a default packet stream that is the set of
packets sent by most tests. Then add the ability to replace it for a
test that would like to send or receive something else through the use
of the function pkt_stream_replace() and then restored with
pkt_stream_restore_default(). These are then used to convert the
STAT_TEST_TX_INVALID to use these new APIs.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-17-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 65 +++++++++++++++++++++++---------
 tools/testing/selftests/bpf/xdpxceiver.h |  1 +
 2 files changed, 48 insertions(+), 18 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 09d2854c10e6..70a8435e3d5e 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -390,6 +390,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 		ifobj->umem = &ifobj->umem_arr[0];
 		ifobj->xsk = &ifobj->xsk_arr[0];
 		ifobj->use_poll = false;
+		ifobj->pkt_stream = test->pkt_stream_default;
 
 		if (i == 0) {
 			ifobj->rx_on = false;
@@ -418,9 +419,12 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 static void test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 			   struct ifobject *ifobj_rx, enum test_mode mode)
 {
+	struct pkt_stream *pkt_stream;
 	u32 i;
 
+	pkt_stream = test->pkt_stream_default;
 	memset(test, 0, sizeof(*test));
+	test->pkt_stream_default = pkt_stream;
 
 	for (i = 0; i < MAX_INTERFACES; i++) {
 		struct ifobject *ifobj = i ? ifobj_rx : ifobj_tx;
@@ -455,6 +459,19 @@ static struct pkt *pkt_stream_get_pkt(struct pkt_stream *pkt_stream, u32 pkt_nb)
 	return &pkt_stream->pkts[pkt_nb];
 }
 
+static void pkt_stream_delete(struct pkt_stream *pkt_stream)
+{
+	free(pkt_stream->pkts);
+	free(pkt_stream);
+}
+
+static void pkt_stream_restore_default(struct test_spec *test)
+{
+	pkt_stream_delete(test->ifobj_tx->pkt_stream);
+	test->ifobj_tx->pkt_stream = test->pkt_stream_default;
+	test->ifobj_rx->pkt_stream = test->pkt_stream_default;
+}
+
 static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb_pkts, u32 pkt_len)
 {
 	struct pkt_stream *pkt_stream;
@@ -483,6 +500,15 @@ static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb
 	return pkt_stream;
 }
 
+static void pkt_stream_replace(struct test_spec *test, u32 nb_pkts, u32 pkt_len)
+{
+	struct pkt_stream *pkt_stream;
+
+	pkt_stream = pkt_stream_generate(test->ifobj_tx->umem, nb_pkts, pkt_len);
+	test->ifobj_tx->pkt_stream = pkt_stream;
+	test->ifobj_rx->pkt_stream = pkt_stream;
+}
+
 static struct pkt *pkt_generate(struct ifobject *ifobject, u32 pkt_nb)
 {
 	struct pkt *pkt = pkt_stream_get_pkt(ifobject->pkt_stream, pkt_nb);
@@ -557,7 +583,7 @@ static bool is_pkt_valid(struct pkt *pkt, void *buffer, const struct xdp_desc *d
 	if (iphdr->version == IP_PKT_VER && iphdr->tos == IP_PKT_TOS) {
 		u32 seqnum = ntohl(*((u32 *)(data + PKT_HDR_SIZE)));
 
-		if (opt_pkt_dump && test_type != TEST_TYPE_STATS)
+		if (opt_pkt_dump)
 			pkt_dump(data, PKT_SIZE);
 
 		if (pkt->len != desc->len) {
@@ -598,9 +624,6 @@ static void complete_pkts(struct xsk_socket_info *xsk, int batch_size)
 	unsigned int rcvd;
 	u32 idx;
 
-	if (!xsk->outstanding_tx)
-		return;
-
 	if (xsk_ring_prod__needs_wakeup(&xsk->tx))
 		kick_tx(xsk);
 
@@ -831,6 +854,7 @@ static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
 
 static void testapp_cleanup_xsk_res(struct ifobject *ifobj)
 {
+	print_verbose("Destroying socket\n");
 	xsk_socket__delete(ifobj->xsk->xsk);
 	xsk_umem__delete(ifobj->umem->umem);
 }
@@ -878,9 +902,6 @@ static void *worker_testapp_validate_rx(void *arg)
 	else
 		receive_pkts(ifobject->pkt_stream, ifobject->xsk, &fds);
 
-	if (test_type == TEST_TYPE_TEARDOWN)
-		print_verbose("Destroying socket\n");
-
 	if (test->total_steps == test->current_step)
 		testapp_cleanup_xsk_res(ifobject);
 	pthread_exit(NULL);
@@ -890,19 +911,11 @@ static void testapp_validate_traffic(struct test_spec *test)
 {
 	struct ifobject *ifobj_tx = test->ifobj_tx;
 	struct ifobject *ifobj_rx = test->ifobj_rx;
-	struct pkt_stream *pkt_stream;
 	pthread_t t0, t1;
 
 	if (pthread_barrier_init(&barr, NULL, 2))
 		exit_with_error(errno);
 
-	if (stat_test_type == STAT_TEST_TX_INVALID)
-		pkt_stream = pkt_stream_generate(test->ifobj_tx->umem, DEFAULT_PKT_CNT,
-						 XSK_UMEM__INVALID_FRAME_SIZE);
-	else
-		pkt_stream = pkt_stream_generate(test->ifobj_tx->umem, DEFAULT_PKT_CNT, PKT_SIZE);
-	ifobj_tx->pkt_stream = pkt_stream;
-	ifobj_rx->pkt_stream = pkt_stream;
 	test->current_step++;
 
 	/*Spawn RX thread */
@@ -982,7 +995,9 @@ static void testapp_bpf_res(struct test_spec *test)
 
 static void testapp_stats(struct test_spec *test)
 {
-	for (int i = 0; i < STAT_TEST_TYPE_MAX; i++) {
+	int i;
+
+	for (i = 0; i < STAT_TEST_TYPE_MAX; i++) {
 		test_spec_reset(test);
 		stat_test_type = i;
 
@@ -991,21 +1006,27 @@ static void testapp_stats(struct test_spec *test)
 			test_spec_set_name(test, "STAT_RX_DROPPED");
 			test->ifobj_rx->umem->frame_headroom = test->ifobj_rx->umem->frame_size -
 				XDP_PACKET_HEADROOM - 1;
+			testapp_validate_traffic(test);
 			break;
 		case STAT_TEST_RX_FULL:
 			test_spec_set_name(test, "STAT_RX_FULL");
 			test->ifobj_rx->xsk->rxqsize = RX_FULL_RXQSIZE;
+			testapp_validate_traffic(test);
 			break;
 		case STAT_TEST_TX_INVALID:
 			test_spec_set_name(test, "STAT_TX_INVALID");
-			continue;
+			pkt_stream_replace(test, DEFAULT_PKT_CNT, XSK_UMEM__INVALID_FRAME_SIZE);
+			testapp_validate_traffic(test);
+
+			pkt_stream_restore_default(test);
+			break;
 		case STAT_TEST_RX_FILL_EMPTY:
 			test_spec_set_name(test, "STAT_RX_FILL_EMPTY");
+			testapp_validate_traffic(test);
 			break;
 		default:
 			break;
 		}
-		testapp_validate_traffic(test);
 	}
 
 	/* To only see the whole stat set being completed unless an individual test fails. */
@@ -1105,6 +1126,7 @@ static void ifobject_delete(struct ifobject *ifobj)
 int main(int argc, char **argv)
 {
 	struct rlimit _rlim = { RLIM_INFINITY, RLIM_INFINITY };
+	struct pkt_stream *pkt_stream_default;
 	struct ifobject *ifobj_tx, *ifobj_rx;
 	struct test_spec test;
 	u32 i, j;
@@ -1133,6 +1155,12 @@ int main(int argc, char **argv)
 	init_iface(ifobj_rx, MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1,
 		   worker_testapp_validate_rx);
 
+	test_spec_init(&test, ifobj_tx, ifobj_rx, 0);
+	pkt_stream_default = pkt_stream_generate(ifobj_tx->umem, DEFAULT_PKT_CNT, PKT_SIZE);
+	if (!pkt_stream_default)
+		exit_with_error(ENOMEM);
+	test.pkt_stream_default = pkt_stream_default;
+
 	ksft_set_plan(TEST_MODE_MAX * TEST_TYPE_MAX);
 
 	for (i = 0; i < TEST_MODE_MAX; i++)
@@ -1142,6 +1170,7 @@ int main(int argc, char **argv)
 			usleep(USLEEP_MAX);
 		}
 
+	pkt_stream_delete(pkt_stream_default);
 	ifobject_delete(ifobj_tx);
 	ifobject_delete(ifobj_rx);
 
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index c5baa7c5f560..e27fe348ae50 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -132,6 +132,7 @@ struct ifobject {
 struct test_spec {
 	struct ifobject *ifobj_tx;
 	struct ifobject *ifobj_rx;
+	struct pkt_stream *pkt_stream_default;
 	u16 total_steps;
 	u16 current_step;
 	u16 nb_sockets;
-- 
cgit v1.2.3


From a4ba98dd0c693e4f0f4aa93ef210a77a72d32025 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:25 +0200
Subject: selftests: xsk: Add test for unaligned mode

Add a test for unaligned mode in which packet buffers can be placed
anywhere within the umem. Some packets are made to straddle page
boundaries in order to check for correctness. On the Tx side, buffers
are now allocated according to the addresses found in the packet
stream. Thus, the placement of buffers can be controlled with the
boolean use_addr_for_fill in the packet stream.

One new pkt_stream interface is introduced: pkt_stream_replace_half()
that replaces every other packet in the default packet stream with the
specified new packet. The constant DEFAULT_OFFSET is also
introduced. It specifies at what offset from the start of a chunk a Tx
packet is placed by the sending thread. This is just to be able to
test that it is possible to send packets at an offset not equal to
zero.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-18-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 127 +++++++++++++++++++++++++------
 tools/testing/selftests/bpf/xdpxceiver.h |   4 +
 2 files changed, 108 insertions(+), 23 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 70a8435e3d5e..7cc75d1481e2 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -19,7 +19,7 @@
  * Virtual Ethernet interfaces.
  *
  * For each mode, the following tests are run:
- *    a. nopoll - soft-irq processing
+ *    a. nopoll - soft-irq processing in run-to-completion mode
  *    b. poll - using poll() syscall
  *    c. Socket Teardown
  *       Create a Tx and a Rx socket, Tx from one socket, Rx on another. Destroy
@@ -45,6 +45,7 @@
  *       Configure sockets at indexes 0 and 1, run a traffic on queue ids 0,
  *       then remove xsk sockets from queue 0 on both veth interfaces and
  *       finally run a traffic on queues ids 1
+ *    g. unaligned mode
  *
  * Total tests: 12
  *
@@ -243,6 +244,9 @@ static int xsk_configure_umem(struct xsk_umem_info *umem, void *buffer, u64 size
 	};
 	int ret;
 
+	if (umem->unaligned_mode)
+		cfg.flags |= XDP_UMEM_UNALIGNED_CHUNK_FLAG;
+
 	ret = xsk_umem__create(&umem->umem, buffer, size,
 			       &umem->fq, &umem->cq, &cfg);
 	if (ret)
@@ -252,19 +256,6 @@ static int xsk_configure_umem(struct xsk_umem_info *umem, void *buffer, u64 size
 	return 0;
 }
 
-static void xsk_populate_fill_ring(struct xsk_umem_info *umem)
-{
-	int ret, i;
-	u32 idx = 0;
-
-	ret = xsk_ring_prod__reserve(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS, &idx);
-	if (ret != XSK_RING_PROD__DEFAULT_NUM_DESCS)
-		exit_with_error(-ret);
-	for (i = 0; i < XSK_RING_PROD__DEFAULT_NUM_DESCS; i++)
-		*xsk_ring_prod__fill_addr(&umem->fq, idx++) = i * umem->frame_size;
-	xsk_ring_prod__submit(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS);
-}
-
 static int xsk_configure_socket(struct xsk_socket_info *xsk, struct xsk_umem_info *umem,
 				struct ifobject *ifobject, u32 qid)
 {
@@ -477,7 +468,7 @@ static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb
 	struct pkt_stream *pkt_stream;
 	u32 i;
 
-	pkt_stream = malloc(sizeof(*pkt_stream));
+	pkt_stream = calloc(1, sizeof(*pkt_stream));
 	if (!pkt_stream)
 		exit_with_error(ENOMEM);
 
@@ -487,7 +478,8 @@ static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb
 
 	pkt_stream->nb_pkts = nb_pkts;
 	for (i = 0; i < nb_pkts; i++) {
-		pkt_stream->pkts[i].addr = (i % umem->num_frames) * umem->frame_size;
+		pkt_stream->pkts[i].addr = (i % umem->num_frames) * umem->frame_size +
+			DEFAULT_OFFSET;
 		pkt_stream->pkts[i].len = pkt_len;
 		pkt_stream->pkts[i].payload = i;
 
@@ -500,6 +492,12 @@ static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb
 	return pkt_stream;
 }
 
+static struct pkt_stream *pkt_stream_clone(struct xsk_umem_info *umem,
+					   struct pkt_stream *pkt_stream)
+{
+	return pkt_stream_generate(umem, pkt_stream->nb_pkts, pkt_stream->pkts[0].len);
+}
+
 static void pkt_stream_replace(struct test_spec *test, u32 nb_pkts, u32 pkt_len)
 {
 	struct pkt_stream *pkt_stream;
@@ -509,6 +507,22 @@ static void pkt_stream_replace(struct test_spec *test, u32 nb_pkts, u32 pkt_len)
 	test->ifobj_rx->pkt_stream = pkt_stream;
 }
 
+static void pkt_stream_replace_half(struct test_spec *test, u32 pkt_len, u32 offset)
+{
+	struct xsk_umem_info *umem = test->ifobj_tx->umem;
+	struct pkt_stream *pkt_stream;
+	u32 i;
+
+	pkt_stream = pkt_stream_clone(umem, test->pkt_stream_default);
+	for (i = 0; i < test->pkt_stream_default->nb_pkts; i += 2) {
+		pkt_stream->pkts[i].addr = (i % umem->num_frames) * umem->frame_size + offset;
+		pkt_stream->pkts[i].len = pkt_len;
+	}
+
+	test->ifobj_tx->pkt_stream = pkt_stream;
+	test->ifobj_rx->pkt_stream = pkt_stream;
+}
+
 static struct pkt *pkt_generate(struct ifobject *ifobject, u32 pkt_nb)
 {
 	struct pkt *pkt = pkt_stream_get_pkt(ifobject->pkt_stream, pkt_nb);
@@ -570,9 +584,9 @@ static void pkt_dump(void *pkt, u32 len)
 	fprintf(stdout, "---------------------------------------\n");
 }
 
-static bool is_pkt_valid(struct pkt *pkt, void *buffer, const struct xdp_desc *desc)
+static bool is_pkt_valid(struct pkt *pkt, void *buffer, u64 addr, u32 len)
 {
-	void *data = xsk_umem__get_data(buffer, desc->addr);
+	void *data = xsk_umem__get_data(buffer, addr);
 	struct iphdr *iphdr = (struct iphdr *)(data + sizeof(struct ethhdr));
 
 	if (!pkt) {
@@ -586,10 +600,10 @@ static bool is_pkt_valid(struct pkt *pkt, void *buffer, const struct xdp_desc *d
 		if (opt_pkt_dump)
 			pkt_dump(data, PKT_SIZE);
 
-		if (pkt->len != desc->len) {
+		if (pkt->len != len) {
 			ksft_test_result_fail
 				("ERROR: [%s] expected length [%d], got length [%d]\n",
-					__func__, pkt->len, desc->len);
+					__func__, pkt->len, len);
 			return false;
 		}
 
@@ -671,7 +685,7 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 
 			orig = xsk_umem__extract_addr(addr);
 			addr = xsk_umem__add_offset_to_addr(addr);
-			if (!is_pkt_valid(pkt, xsk->umem->buffer, desc))
+			if (!is_pkt_valid(pkt, xsk->umem->buffer, addr, desc->len))
 				return;
 
 			*xsk_ring_prod__fill_addr(&xsk->umem->fq, idx_fq++) = orig;
@@ -815,13 +829,16 @@ static void tx_stats_validate(struct ifobject *ifobject)
 
 static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
 {
+	int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
 	u32 i;
 
 	ifobject->ns_fd = switch_namespace(ifobject->nsname);
 
+	if (ifobject->umem->unaligned_mode)
+		mmap_flags |= MAP_HUGETLB;
+
 	for (i = 0; i < test->nb_sockets; i++) {
 		u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
-		int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
 		u32 ctr = 0;
 		void *bufs;
 
@@ -879,6 +896,32 @@ static void *worker_testapp_validate_tx(void *arg)
 	pthread_exit(NULL);
 }
 
+static void xsk_populate_fill_ring(struct xsk_umem_info *umem, struct pkt_stream *pkt_stream)
+{
+	u32 idx = 0, i;
+	int ret;
+
+	ret = xsk_ring_prod__reserve(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS, &idx);
+	if (ret != XSK_RING_PROD__DEFAULT_NUM_DESCS)
+		exit_with_error(ENOSPC);
+	for (i = 0; i < XSK_RING_PROD__DEFAULT_NUM_DESCS; i++) {
+		u64 addr;
+
+		if (pkt_stream->use_addr_for_fill) {
+			struct pkt *pkt = pkt_stream_get_pkt(pkt_stream, i);
+
+			if (!pkt)
+				break;
+			addr = pkt->addr;
+		} else {
+			addr = (i % umem->num_frames) * umem->frame_size + DEFAULT_OFFSET;
+		}
+
+		*xsk_ring_prod__fill_addr(&umem->fq, idx++) = addr;
+	}
+	xsk_ring_prod__submit(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS);
+}
+
 static void *worker_testapp_validate_rx(void *arg)
 {
 	struct test_spec *test = (struct test_spec *)arg;
@@ -889,7 +932,7 @@ static void *worker_testapp_validate_rx(void *arg)
 		thread_common_ops(test, ifobject);
 
 	if (stat_test_type != STAT_TEST_RX_FILL_EMPTY)
-		xsk_populate_fill_ring(ifobject->umem);
+		xsk_populate_fill_ring(ifobject->umem, ifobject->pkt_stream);
 
 	fds.fd = xsk_socket__fd(ifobject->xsk->xsk);
 	fds.events = POLLIN;
@@ -1033,6 +1076,40 @@ static void testapp_stats(struct test_spec *test)
 	test_spec_set_name(test, "STATS");
 }
 
+/* Simple test */
+static bool hugepages_present(struct ifobject *ifobject)
+{
+	const size_t mmap_sz = 2 * ifobject->umem->num_frames * ifobject->umem->frame_size;
+	void *bufs;
+
+	bufs = mmap(NULL, mmap_sz, PROT_READ | PROT_WRITE,
+		    MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE | MAP_HUGETLB, -1, 0);
+	if (bufs == MAP_FAILED)
+		return false;
+
+	munmap(bufs, mmap_sz);
+	return true;
+}
+
+static bool testapp_unaligned(struct test_spec *test)
+{
+	if (!hugepages_present(test->ifobj_tx)) {
+		ksft_test_result_skip("No 2M huge pages present.\n");
+		return false;
+	}
+
+	test_spec_set_name(test, "UNALIGNED_MODE");
+	test->ifobj_tx->umem->unaligned_mode = true;
+	test->ifobj_rx->umem->unaligned_mode = true;
+	/* Let half of the packets straddle a buffer boundrary */
+	pkt_stream_replace_half(test, PKT_SIZE, test->ifobj_tx->umem->frame_size - 32);
+	test->ifobj_rx->pkt_stream->use_addr_for_fill = true;
+	testapp_validate_traffic(test);
+
+	pkt_stream_restore_default(test);
+	return true;
+}
+
 static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char *src_mac,
 		       const char *dst_ip, const char *src_ip, const u16 dst_port,
 		       const u16 src_port, thread_func_t func_ptr)
@@ -1084,6 +1161,10 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
 		test_spec_set_name(test, "POLL");
 		testapp_validate_traffic(test);
 		break;
+	case TEST_TYPE_UNALIGNED:
+		if (!testapp_unaligned(test))
+			return;
+		break;
 	default:
 		break;
 	}
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index e27fe348ae50..129801eb013c 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -39,6 +39,7 @@
 #define POLL_TMOUT 1000
 #define DEFAULT_PKT_CNT (4 * 1024)
 #define RX_FULL_RXQSIZE 32
+#define DEFAULT_OFFSET 256
 #define XSK_UMEM__INVALID_FRAME_SIZE (XSK_UMEM__DEFAULT_FRAME_SIZE + 1)
 
 #define print_verbose(x...) do { if (opt_verbose) ksft_print_msg(x); } while (0)
@@ -52,6 +53,7 @@ enum test_mode {
 enum test_type {
 	TEST_TYPE_NOPOLL,
 	TEST_TYPE_POLL,
+	TEST_TYPE_UNALIGNED,
 	TEST_TYPE_TEARDOWN,
 	TEST_TYPE_BIDI,
 	TEST_TYPE_STATS,
@@ -81,6 +83,7 @@ struct xsk_umem_info {
 	u32 frame_headroom;
 	void *buffer;
 	u32 frame_size;
+	bool unaligned_mode;
 };
 
 struct xsk_socket_info {
@@ -102,6 +105,7 @@ struct pkt {
 struct pkt_stream {
 	u32 nb_pkts;
 	struct pkt *pkts;
+	bool use_addr_for_fill;
 };
 
 typedef void *(*thread_func_t)(void *arg);
-- 
cgit v1.2.3


From 6ce67b5165e630a4f874e9e45bd9cca86aa4f4a6 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:26 +0200
Subject: selftests: xsk: Eliminate test specific if-statement in test runner

Eliminate a test specific if-statement for the RX_FILL_EMTPY stats
test that is present in the test runner. We can do this as we now have
the use_addr_for_fill option. Just create and empty Rx packet stream
and indicated that the test runner should use the addresses in that to
populate the fill ring. As there are no packets in the stream, the
fill ring will be empty and we will get the error stats that we want
to test.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-19-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 7cc75d1481e2..4d86c4b62aa9 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -458,8 +458,10 @@ static void pkt_stream_delete(struct pkt_stream *pkt_stream)
 
 static void pkt_stream_restore_default(struct test_spec *test)
 {
-	pkt_stream_delete(test->ifobj_tx->pkt_stream);
-	test->ifobj_tx->pkt_stream = test->pkt_stream_default;
+	if (test->ifobj_tx->pkt_stream != test->pkt_stream_default) {
+		pkt_stream_delete(test->ifobj_tx->pkt_stream);
+		test->ifobj_tx->pkt_stream = test->pkt_stream_default;
+	}
 	test->ifobj_rx->pkt_stream = test->pkt_stream_default;
 }
 
@@ -931,8 +933,7 @@ static void *worker_testapp_validate_rx(void *arg)
 	if (test->current_step == 1)
 		thread_common_ops(test, ifobject);
 
-	if (stat_test_type != STAT_TEST_RX_FILL_EMPTY)
-		xsk_populate_fill_ring(ifobject->umem, ifobject->pkt_stream);
+	xsk_populate_fill_ring(ifobject->umem, ifobject->pkt_stream);
 
 	fds.fd = xsk_socket__fd(ifobject->xsk->xsk);
 	fds.events = POLLIN;
@@ -1065,7 +1066,14 @@ static void testapp_stats(struct test_spec *test)
 			break;
 		case STAT_TEST_RX_FILL_EMPTY:
 			test_spec_set_name(test, "STAT_RX_FILL_EMPTY");
+			test->ifobj_rx->pkt_stream = pkt_stream_generate(test->ifobj_rx->umem, 0,
+									 MIN_PKT_SIZE);
+			if (!test->ifobj_rx->pkt_stream)
+				exit_with_error(ENOMEM);
+			test->ifobj_rx->pkt_stream->use_addr_for_fill = true;
 			testapp_validate_traffic(test);
+
+			pkt_stream_restore_default(test);
 			break;
 		default:
 			break;
-- 
cgit v1.2.3


From 0d1b7f3a00cf530c2cad643812f08220b7729b9b Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:27 +0200
Subject: selftests: xsk: Add tests for invalid xsk descriptors

Add tests for invalid xsk descriptors in the Tx ring. A number of
handcrafted nasty invalid descriptors are created and submitted to the
tx ring to check that they are validated correctly. Corner case valid
ones are also sent. The tests are run for both aligned and unaligned
mode.

pkt_stream_set() is introduced to be able to create a hand-crafted
packet stream where every single packet is specified in detail.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-20-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 143 +++++++++++++++++++++++++++----
 tools/testing/selftests/bpf/xdpxceiver.h |   7 +-
 2 files changed, 132 insertions(+), 18 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 4d86c4b62aa9..1a03f7941bb8 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -46,6 +46,8 @@
  *       then remove xsk sockets from queue 0 on both veth interfaces and
  *       finally run a traffic on queues ids 1
  *    g. unaligned mode
+ *    h. tests for invalid and corner case Tx descriptors so that the correct ones
+ *       are discarded and let through, respectively.
  *
  * Total tests: 12
  *
@@ -394,7 +396,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 		for (j = 0; j < MAX_SOCKETS; j++) {
 			memset(&ifobj->umem_arr[j], 0, sizeof(ifobj->umem_arr[j]));
 			memset(&ifobj->xsk_arr[j], 0, sizeof(ifobj->xsk_arr[j]));
-			ifobj->umem_arr[j].num_frames = DEFAULT_PKT_CNT / 4;
+			ifobj->umem_arr[j].num_frames = DEFAULT_UMEM_BUFFERS;
 			ifobj->umem_arr[j].frame_size = XSK_UMEM__DEFAULT_FRAME_SIZE;
 			ifobj->xsk_arr[j].rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
 		}
@@ -450,6 +452,16 @@ static struct pkt *pkt_stream_get_pkt(struct pkt_stream *pkt_stream, u32 pkt_nb)
 	return &pkt_stream->pkts[pkt_nb];
 }
 
+static struct pkt *pkt_stream_get_next_rx_pkt(struct pkt_stream *pkt_stream)
+{
+	while (pkt_stream->rx_pkt_nb < pkt_stream->nb_pkts) {
+		if (pkt_stream->pkts[pkt_stream->rx_pkt_nb].valid)
+			return &pkt_stream->pkts[pkt_stream->rx_pkt_nb++];
+		pkt_stream->rx_pkt_nb++;
+	}
+	return NULL;
+}
+
 static void pkt_stream_delete(struct pkt_stream *pkt_stream)
 {
 	free(pkt_stream->pkts);
@@ -465,17 +477,31 @@ static void pkt_stream_restore_default(struct test_spec *test)
 	test->ifobj_rx->pkt_stream = test->pkt_stream_default;
 }
 
-static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb_pkts, u32 pkt_len)
+static struct pkt_stream *__pkt_stream_alloc(u32 nb_pkts)
 {
 	struct pkt_stream *pkt_stream;
-	u32 i;
 
 	pkt_stream = calloc(1, sizeof(*pkt_stream));
 	if (!pkt_stream)
-		exit_with_error(ENOMEM);
+		return NULL;
 
 	pkt_stream->pkts = calloc(nb_pkts, sizeof(*pkt_stream->pkts));
-	if (!pkt_stream->pkts)
+	if (!pkt_stream->pkts) {
+		free(pkt_stream);
+		return NULL;
+	}
+
+	pkt_stream->nb_pkts = nb_pkts;
+	return pkt_stream;
+}
+
+static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb_pkts, u32 pkt_len)
+{
+	struct pkt_stream *pkt_stream;
+	u32 i;
+
+	pkt_stream = __pkt_stream_alloc(nb_pkts);
+	if (!pkt_stream)
 		exit_with_error(ENOMEM);
 
 	pkt_stream->nb_pkts = nb_pkts;
@@ -535,6 +561,8 @@ static struct pkt *pkt_generate(struct ifobject *ifobject, u32 pkt_nb)
 
 	if (!pkt)
 		return NULL;
+	if (!pkt->valid || pkt->len < PKT_SIZE)
+		return pkt;
 
 	data = xsk_umem__get_data(ifobject->umem->buffer, pkt->addr);
 	udp_hdr = (struct udphdr *)(data + sizeof(struct ethhdr) + sizeof(struct iphdr));
@@ -549,6 +577,26 @@ static struct pkt *pkt_generate(struct ifobject *ifobject, u32 pkt_nb)
 	return pkt;
 }
 
+static void pkt_stream_generate_custom(struct test_spec *test, struct pkt *pkts, u32 nb_pkts)
+{
+	struct pkt_stream *pkt_stream;
+	u32 i;
+
+	pkt_stream = __pkt_stream_alloc(nb_pkts);
+	if (!pkt_stream)
+		exit_with_error(ENOMEM);
+
+	test->ifobj_tx->pkt_stream = pkt_stream;
+	test->ifobj_rx->pkt_stream = pkt_stream;
+
+	for (i = 0; i < nb_pkts; i++) {
+		pkt_stream->pkts[i].addr = pkts[i].addr;
+		pkt_stream->pkts[i].len = pkts[i].len;
+		pkt_stream->pkts[i].payload = i;
+		pkt_stream->pkts[i].valid = pkts[i].valid;
+	}
+}
+
 static void pkt_dump(void *pkt, u32 len)
 {
 	char s[INET_ADDRSTRLEN];
@@ -596,19 +644,24 @@ static bool is_pkt_valid(struct pkt *pkt, void *buffer, u64 addr, u32 len)
 		return false;
 	}
 
+	if (len < PKT_SIZE) {
+		/*Do not try to verify packets that are smaller than minimum size. */
+		return true;
+	}
+
+	if (pkt->len != len) {
+		ksft_test_result_fail
+			("ERROR: [%s] expected length [%d], got length [%d]\n",
+			 __func__, pkt->len, len);
+		return false;
+	}
+
 	if (iphdr->version == IP_PKT_VER && iphdr->tos == IP_PKT_TOS) {
 		u32 seqnum = ntohl(*((u32 *)(data + PKT_HDR_SIZE)));
 
 		if (opt_pkt_dump)
 			pkt_dump(data, PKT_SIZE);
 
-		if (pkt->len != len) {
-			ksft_test_result_fail
-				("ERROR: [%s] expected length [%d], got length [%d]\n",
-					__func__, pkt->len, len);
-			return false;
-		}
-
 		if (pkt->payload != seqnum) {
 			ksft_test_result_fail
 				("ERROR: [%s] expected seqnum [%d], got seqnum [%d]\n",
@@ -645,6 +698,15 @@ static void complete_pkts(struct xsk_socket_info *xsk, int batch_size)
 
 	rcvd = xsk_ring_cons__peek(&xsk->umem->cq, batch_size, &idx);
 	if (rcvd) {
+		if (rcvd > xsk->outstanding_tx) {
+			u64 addr = *xsk_ring_cons__comp_addr(&xsk->umem->cq, idx + rcvd - 1);
+
+			ksft_test_result_fail("ERROR: [%s] Too many packets completed\n",
+					      __func__);
+			ksft_print_msg("Last completion address: %llx\n", addr);
+			return;
+		}
+
 		xsk_ring_cons__release(&xsk->umem->cq, rcvd);
 		xsk->outstanding_tx -= rcvd;
 	}
@@ -653,11 +715,10 @@ static void complete_pkts(struct xsk_socket_info *xsk, int batch_size)
 static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *xsk,
 			 struct pollfd *fds)
 {
-	u32 idx_rx = 0, idx_fq = 0, rcvd, i, pkt_count = 0;
-	struct pkt *pkt;
+	struct pkt *pkt = pkt_stream_get_next_rx_pkt(pkt_stream);
+	u32 idx_rx = 0, idx_fq = 0, rcvd, i;
 	int ret;
 
-	pkt = pkt_stream_get_pkt(pkt_stream, pkt_count++);
 	while (pkt) {
 		rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx);
 		if (!rcvd) {
@@ -685,13 +746,21 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 			const struct xdp_desc *desc = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx++);
 			u64 addr = desc->addr, orig;
 
+			if (!pkt) {
+				ksft_test_result_fail("ERROR: [%s] Received too many packets.\n",
+						      __func__);
+				ksft_print_msg("Last packet has addr: %llx len: %u\n",
+					       addr, desc->len);
+				return;
+			}
+
 			orig = xsk_umem__extract_addr(addr);
 			addr = xsk_umem__add_offset_to_addr(addr);
 			if (!is_pkt_valid(pkt, xsk->umem->buffer, addr, desc->len))
 				return;
 
 			*xsk_ring_prod__fill_addr(&xsk->umem->fq, idx_fq++) = orig;
-			pkt = pkt_stream_get_pkt(pkt_stream, pkt_count++);
+			pkt = pkt_stream_get_next_rx_pkt(pkt_stream);
 		}
 
 		xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
@@ -875,6 +944,7 @@ static void testapp_cleanup_xsk_res(struct ifobject *ifobj)
 {
 	print_verbose("Destroying socket\n");
 	xsk_socket__delete(ifobj->xsk->xsk);
+	munmap(ifobj->umem->buffer, ifobj->umem->num_frames * ifobj->umem->frame_size);
 	xsk_umem__delete(ifobj->umem->umem);
 }
 
@@ -1118,6 +1188,35 @@ static bool testapp_unaligned(struct test_spec *test)
 	return true;
 }
 
+static void testapp_invalid_desc(struct test_spec *test)
+{
+	struct pkt pkts[] = {
+		/* Zero packet length at address zero allowed */
+		{0, 0, 0, true},
+		/* Zero packet length allowed */
+		{0x1000, 0, 0, true},
+		/* Straddling the start of umem */
+		{-2, PKT_SIZE, 0, false},
+		/* Packet too large */
+		{0x2000, XSK_UMEM__INVALID_FRAME_SIZE, 0, false},
+		/* After umem ends */
+		{UMEM_SIZE, PKT_SIZE, 0, false},
+		/* Straddle the end of umem */
+		{UMEM_SIZE - PKT_SIZE / 2, PKT_SIZE, 0, false},
+		/* Straddle a page boundrary */
+		{0x3000 - PKT_SIZE / 2, PKT_SIZE, 0, false},
+		/* Valid packet for synch so that something is received */
+		{0x4000, PKT_SIZE, 0, true}};
+
+	if (test->ifobj_tx->umem->unaligned_mode) {
+		/* Crossing a page boundrary allowed */
+		pkts[6].valid = true;
+	}
+	pkt_stream_generate_custom(test, pkts, ARRAY_SIZE(pkts));
+	testapp_validate_traffic(test);
+	pkt_stream_restore_default(test);
+}
+
 static void init_iface(struct ifobject *ifobj, const char *dst_mac, const char *src_mac,
 		       const char *dst_ip, const char *src_ip, const u16 dst_port,
 		       const u16 src_port, thread_func_t func_ptr)
@@ -1159,7 +1258,7 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
 	case TEST_TYPE_BPF_RES:
 		testapp_bpf_res(test);
 		break;
-	case TEST_TYPE_NOPOLL:
+	case TEST_TYPE_RUN_TO_COMPLETION:
 		test_spec_set_name(test, "RUN_TO_COMPLETION");
 		testapp_validate_traffic(test);
 		break;
@@ -1169,6 +1268,16 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
 		test_spec_set_name(test, "POLL");
 		testapp_validate_traffic(test);
 		break;
+	case TEST_TYPE_ALIGNED_INV_DESC:
+		test_spec_set_name(test, "ALIGNED_INV_DESC");
+		testapp_invalid_desc(test);
+		break;
+	case TEST_TYPE_UNALIGNED_INV_DESC:
+		test_spec_set_name(test, "UNALIGNED_INV_DESC");
+		test->ifobj_tx->umem->unaligned_mode = true;
+		test->ifobj_rx->umem->unaligned_mode = true;
+		testapp_invalid_desc(test);
+		break;
 	case TEST_TYPE_UNALIGNED:
 		if (!testapp_unaligned(test))
 			return;
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 129801eb013c..2d9efb89ea28 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -38,6 +38,8 @@
 #define BATCH_SIZE 8
 #define POLL_TMOUT 1000
 #define DEFAULT_PKT_CNT (4 * 1024)
+#define DEFAULT_UMEM_BUFFERS (DEFAULT_PKT_CNT / 4)
+#define UMEM_SIZE (DEFAULT_UMEM_BUFFERS * XSK_UMEM__DEFAULT_FRAME_SIZE)
 #define RX_FULL_RXQSIZE 32
 #define DEFAULT_OFFSET 256
 #define XSK_UMEM__INVALID_FRAME_SIZE (XSK_UMEM__DEFAULT_FRAME_SIZE + 1)
@@ -51,9 +53,11 @@ enum test_mode {
 };
 
 enum test_type {
-	TEST_TYPE_NOPOLL,
+	TEST_TYPE_RUN_TO_COMPLETION,
 	TEST_TYPE_POLL,
 	TEST_TYPE_UNALIGNED,
+	TEST_TYPE_ALIGNED_INV_DESC,
+	TEST_TYPE_UNALIGNED_INV_DESC,
 	TEST_TYPE_TEARDOWN,
 	TEST_TYPE_BIDI,
 	TEST_TYPE_STATS,
@@ -104,6 +108,7 @@ struct pkt {
 
 struct pkt_stream {
 	u32 nb_pkts;
+	u32 rx_pkt_nb;
 	struct pkt *pkts;
 	bool use_addr_for_fill;
 };
-- 
cgit v1.2.3


From 909f0e28207ced098612653ebaafcbb2e13be834 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Tue, 7 Sep 2021 09:19:28 +0200
Subject: selftests: xsk: Add tests for 2K frame size

Add tests for 2K frame size. Both a standard send and receive test and
one testing for invalid descriptors when the frame size is 2K.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/20210907071928.9750-21-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 23 +++++++++++++++++++++++
 tools/testing/selftests/bpf/xdpxceiver.h |  2 ++
 2 files changed, 25 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 1a03f7941bb8..127bcde06c86 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -48,6 +48,7 @@
  *    g. unaligned mode
  *    h. tests for invalid and corner case Tx descriptors so that the correct ones
  *       are discarded and let through, respectively.
+ *    i. 2K frame size tests
  *
  * Total tests: 12
  *
@@ -1205,6 +1206,8 @@ static void testapp_invalid_desc(struct test_spec *test)
 		{UMEM_SIZE - PKT_SIZE / 2, PKT_SIZE, 0, false},
 		/* Straddle a page boundrary */
 		{0x3000 - PKT_SIZE / 2, PKT_SIZE, 0, false},
+		/* Straddle a 2K boundrary */
+		{0x3800 - PKT_SIZE / 2, PKT_SIZE, 0, true},
 		/* Valid packet for synch so that something is received */
 		{0x4000, PKT_SIZE, 0, true}};
 
@@ -1212,6 +1215,11 @@ static void testapp_invalid_desc(struct test_spec *test)
 		/* Crossing a page boundrary allowed */
 		pkts[6].valid = true;
 	}
+	if (test->ifobj_tx->umem->frame_size == XSK_UMEM__DEFAULT_FRAME_SIZE / 2) {
+		/* Crossing a 2K frame size boundrary not allowed */
+		pkts[7].valid = false;
+	}
+
 	pkt_stream_generate_custom(test, pkts, ARRAY_SIZE(pkts));
 	testapp_validate_traffic(test);
 	pkt_stream_restore_default(test);
@@ -1262,6 +1270,15 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
 		test_spec_set_name(test, "RUN_TO_COMPLETION");
 		testapp_validate_traffic(test);
 		break;
+	case TEST_TYPE_RUN_TO_COMPLETION_2K_FRAME:
+		test_spec_set_name(test, "RUN_TO_COMPLETION_2K_FRAME_SIZE");
+		test->ifobj_tx->umem->frame_size = 2048;
+		test->ifobj_rx->umem->frame_size = 2048;
+		pkt_stream_replace(test, DEFAULT_PKT_CNT, MIN_PKT_SIZE);
+		testapp_validate_traffic(test);
+
+		pkt_stream_restore_default(test);
+		break;
 	case TEST_TYPE_POLL:
 		test->ifobj_tx->use_poll = true;
 		test->ifobj_rx->use_poll = true;
@@ -1272,6 +1289,12 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
 		test_spec_set_name(test, "ALIGNED_INV_DESC");
 		testapp_invalid_desc(test);
 		break;
+	case TEST_TYPE_ALIGNED_INV_DESC_2K_FRAME:
+		test_spec_set_name(test, "ALIGNED_INV_DESC_2K_FRAME_SIZE");
+		test->ifobj_tx->umem->frame_size = 2048;
+		test->ifobj_rx->umem->frame_size = 2048;
+		testapp_invalid_desc(test);
+		break;
 	case TEST_TYPE_UNALIGNED_INV_DESC:
 		test_spec_set_name(test, "UNALIGNED_INV_DESC");
 		test->ifobj_tx->umem->unaligned_mode = true;
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 2d9efb89ea28..5ac4a5e64744 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -54,9 +54,11 @@ enum test_mode {
 
 enum test_type {
 	TEST_TYPE_RUN_TO_COMPLETION,
+	TEST_TYPE_RUN_TO_COMPLETION_2K_FRAME,
 	TEST_TYPE_POLL,
 	TEST_TYPE_UNALIGNED,
 	TEST_TYPE_ALIGNED_INV_DESC,
+	TEST_TYPE_ALIGNED_INV_DESC_2K_FRAME,
 	TEST_TYPE_UNALIGNED_INV_DESC,
 	TEST_TYPE_TEARDOWN,
 	TEST_TYPE_BIDI,
-- 
cgit v1.2.3


From 3384c7c7641b44987e35eadbc9df6c16a0520159 Mon Sep 17 00:00:00 2001
From: Vadim Fedorenko <vfedorenko@novek.ru>
Date: Fri, 10 Sep 2021 01:04:09 +0300
Subject: selftests/bpf: Test new __sk_buff field hwtstamp

Analogous to the gso_segs selftests introduced in commit d9ff286a0f59
("bpf: allow BPF programs access skb_shared_info->gso_segs field").

Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210909220409.8804-3-vfedorenko@novek.ru
---
 lib/test_bpf.c                                   |  1 +
 net/bpf/test_run.c                               |  8 ++++
 tools/testing/selftests/bpf/prog_tests/skb_ctx.c |  1 +
 tools/testing/selftests/bpf/progs/test_skb_ctx.c |  2 +
 tools/testing/selftests/bpf/verifier/ctx_skb.c   | 60 ++++++++++++++++++++++++
 5 files changed, 72 insertions(+)

(limited to 'tools/testing')

diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 830a18ecffc8..0018d51b93b0 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -8800,6 +8800,7 @@ static __init struct sk_buff *build_test_skb(void)
 	skb_shinfo(skb[0])->gso_type |= SKB_GSO_DODGY;
 	skb_shinfo(skb[0])->gso_segs = 0;
 	skb_shinfo(skb[0])->frag_list = skb[1];
+	skb_shinfo(skb[0])->hwtstamps.hwtstamp = 1000;
 
 	/* adjust skb[0]'s len */
 	skb[0]->len += skb[1]->len;
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 1153b89c9d93..fcb2f493f710 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -507,6 +507,12 @@ static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb)
 	/* gso_size is allowed */
 
 	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, gso_size),
+			   offsetof(struct __sk_buff, hwtstamp)))
+		return -EINVAL;
+
+	/* hwtstamp is allowed */
+
+	if (!range_is_zero(__skb, offsetofend(struct __sk_buff, hwtstamp),
 			   sizeof(struct __sk_buff)))
 		return -EINVAL;
 
@@ -529,6 +535,7 @@ static int convert___skb_to_skb(struct sk_buff *skb, struct __sk_buff *__skb)
 		return -EINVAL;
 	skb_shinfo(skb)->gso_segs = __skb->gso_segs;
 	skb_shinfo(skb)->gso_size = __skb->gso_size;
+	skb_shinfo(skb)->hwtstamps.hwtstamp = __skb->hwtstamp;
 
 	return 0;
 }
@@ -548,6 +555,7 @@ static void convert_skb_to___skb(struct sk_buff *skb, struct __sk_buff *__skb)
 	memcpy(__skb->cb, &cb->data, QDISC_CB_PRIV_LEN);
 	__skb->wire_len = cb->pkt_len;
 	__skb->gso_segs = skb_shinfo(skb)->gso_segs;
+	__skb->hwtstamp = skb_shinfo(skb)->hwtstamps.hwtstamp;
 }
 
 int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
diff --git a/tools/testing/selftests/bpf/prog_tests/skb_ctx.c b/tools/testing/selftests/bpf/prog_tests/skb_ctx.c
index 2bf8c687348b..c437e6ba8fe2 100644
--- a/tools/testing/selftests/bpf/prog_tests/skb_ctx.c
+++ b/tools/testing/selftests/bpf/prog_tests/skb_ctx.c
@@ -18,6 +18,7 @@ void test_skb_ctx(void)
 		.gso_segs = 8,
 		.mark = 9,
 		.gso_size = 10,
+		.hwtstamp = 11,
 	};
 	struct bpf_prog_test_run_attr tattr = {
 		.data_in = &pkt_v4,
diff --git a/tools/testing/selftests/bpf/progs/test_skb_ctx.c b/tools/testing/selftests/bpf/progs/test_skb_ctx.c
index bbd5a9c1c4df..ba4dab09d19c 100644
--- a/tools/testing/selftests/bpf/progs/test_skb_ctx.c
+++ b/tools/testing/selftests/bpf/progs/test_skb_ctx.c
@@ -29,6 +29,8 @@ int process(struct __sk_buff *skb)
 		return 1;
 	if (skb->ifindex != 1)
 		return 1;
+	if (skb->hwtstamp != 11)
+		return 1;
 
 	return 0;
 }
diff --git a/tools/testing/selftests/bpf/verifier/ctx_skb.c b/tools/testing/selftests/bpf/verifier/ctx_skb.c
index 2022c0f2cd75..9e1a30b94197 100644
--- a/tools/testing/selftests/bpf/verifier/ctx_skb.c
+++ b/tools/testing/selftests/bpf/verifier/ctx_skb.c
@@ -1057,6 +1057,66 @@
 	.result = ACCEPT,
 	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
 },
+{
+	"padding after gso_size is not accessible",
+	.insns = {
+	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
+		    offsetofend(struct __sk_buff, gso_size)),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = REJECT,
+	.result_unpriv = REJECT,
+	.errstr = "invalid bpf_context access off=180 size=4",
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+},
+{
+	"read hwtstamp from CGROUP_SKB",
+	.insns = {
+	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
+		    offsetof(struct __sk_buff, hwtstamp)),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
+},
+{
+	"read hwtstamp from CGROUP_SKB",
+	.insns = {
+	BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1,
+		    offsetof(struct __sk_buff, hwtstamp)),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
+},
+{
+	"write hwtstamp from CGROUP_SKB",
+	.insns = {
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
+		    offsetof(struct __sk_buff, hwtstamp)),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = REJECT,
+	.result_unpriv = REJECT,
+	.errstr = "invalid bpf_context access off=184 size=8",
+	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
+},
+{
+	"read hwtstamp from CLS",
+	.insns = {
+	BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
+		    offsetof(struct __sk_buff, hwtstamp)),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+},
 {
 	"check wire_len is not readable by sockets",
 	.insns = {
-- 
cgit v1.2.3


From 025bd7c753aab18cd594924a46ab46ac47209df9 Mon Sep 17 00:00:00 2001
From: Song Liu <songliubraving@fb.com>
Date: Fri, 10 Sep 2021 11:33:52 -0700
Subject: selftests/bpf: Add test for bpf_get_branch_snapshot

This test uses bpf_get_branch_snapshot from a fexit program. The test uses
a target function (bpf_testmod_loop_test) and compares the record against
kallsyms. If there isn't enough record matching kallsyms, the test fails.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210910183352.3151445-4-songliubraving@fb.com
---
 .../selftests/bpf/bpf_testmod/bpf_testmod.c        |  19 +++-
 .../testing/selftests/bpf/prog_tests/core_reloc.c  |  14 +--
 .../selftests/bpf/prog_tests/get_branch_snapshot.c | 100 +++++++++++++++++++++
 .../selftests/bpf/prog_tests/module_attach.c       |  39 --------
 .../selftests/bpf/progs/get_branch_snapshot.c      |  40 +++++++++
 tools/testing/selftests/bpf/test_progs.c           |  39 ++++++++
 tools/testing/selftests/bpf/test_progs.h           |   2 +
 tools/testing/selftests/bpf/trace_helpers.c        |  37 ++++++++
 tools/testing/selftests/bpf/trace_helpers.h        |   5 ++
 9 files changed, 243 insertions(+), 52 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
 create mode 100644 tools/testing/selftests/bpf/progs/get_branch_snapshot.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
index 141d8da687d2..50fc5561110a 100644
--- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
+++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
@@ -13,6 +13,18 @@
 
 DEFINE_PER_CPU(int, bpf_testmod_ksym_percpu) = 123;
 
+noinline int bpf_testmod_loop_test(int n)
+{
+	int i, sum = 0;
+
+	/* the primary goal of this test is to test LBR. Create a lot of
+	 * branches in the function, so we can catch it easily.
+	 */
+	for (i = 0; i < n; i++)
+		sum += i;
+	return sum;
+}
+
 noinline ssize_t
 bpf_testmod_test_read(struct file *file, struct kobject *kobj,
 		      struct bin_attribute *bin_attr,
@@ -24,7 +36,11 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj,
 		.len = len,
 	};
 
-	trace_bpf_testmod_test_read(current, &ctx);
+	/* This is always true. Use the check to make sure the compiler
+	 * doesn't remove bpf_testmod_loop_test.
+	 */
+	if (bpf_testmod_loop_test(101) > 100)
+		trace_bpf_testmod_test_read(current, &ctx);
 
 	return -EIO; /* always fail */
 }
@@ -71,4 +87,3 @@ module_exit(bpf_testmod_exit);
 MODULE_AUTHOR("Andrii Nakryiko");
 MODULE_DESCRIPTION("BPF selftests module");
 MODULE_LICENSE("Dual BSD/GPL");
-
diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
index 4739b15b2a97..15d355af8d1d 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
@@ -30,7 +30,7 @@ static int duration = 0;
 	.output_len = sizeof(struct core_reloc_module_output),		\
 	.prog_sec_name = sec_name,					\
 	.raw_tp_name = tp_name,						\
-	.trigger = trigger_module_test_read,				\
+	.trigger = __trigger_module_test_read,				\
 	.needs_testmod = true,						\
 }
 
@@ -475,19 +475,11 @@ static int setup_type_id_case_failure(struct core_reloc_test_case *test)
 	return 0;
 }
 
-static int trigger_module_test_read(const struct core_reloc_test_case *test)
+static int __trigger_module_test_read(const struct core_reloc_test_case *test)
 {
 	struct core_reloc_module_output *exp = (void *)test->output;
-	int fd, err;
-
-	fd = open("/sys/kernel/bpf_testmod", O_RDONLY);
-	err = -errno;
-	if (CHECK(fd < 0, "testmod_file_open", "failed: %d\n", err))
-		return err;
-
-	read(fd, NULL, exp->len); /* request expected number of bytes */
-	close(fd);
 
+	trigger_module_test_read(exp->len);
 	return 0;
 }
 
diff --git a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
new file mode 100644
index 000000000000..f81db9135ae4
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <test_progs.h>
+#include "get_branch_snapshot.skel.h"
+
+static int *pfd_array;
+static int cpu_cnt;
+
+static int create_perf_events(void)
+{
+	struct perf_event_attr attr = {0};
+	int cpu;
+
+	/* create perf event */
+	attr.size = sizeof(attr);
+	attr.type = PERF_TYPE_RAW;
+	attr.config = 0x1b00;
+	attr.sample_type = PERF_SAMPLE_BRANCH_STACK;
+	attr.branch_sample_type = PERF_SAMPLE_BRANCH_KERNEL |
+		PERF_SAMPLE_BRANCH_USER | PERF_SAMPLE_BRANCH_ANY;
+
+	cpu_cnt = libbpf_num_possible_cpus();
+	pfd_array = malloc(sizeof(int) * cpu_cnt);
+	if (!pfd_array) {
+		cpu_cnt = 0;
+		return 1;
+	}
+
+	for (cpu = 0; cpu < cpu_cnt; cpu++) {
+		pfd_array[cpu] = syscall(__NR_perf_event_open, &attr,
+					 -1, cpu, -1, PERF_FLAG_FD_CLOEXEC);
+		if (pfd_array[cpu] < 0)
+			break;
+	}
+
+	return cpu == 0;
+}
+
+static void close_perf_events(void)
+{
+	int cpu = 0;
+	int fd;
+
+	while (cpu++ < cpu_cnt) {
+		fd = pfd_array[cpu];
+		if (fd < 0)
+			break;
+		close(fd);
+	}
+	free(pfd_array);
+}
+
+void test_get_branch_snapshot(void)
+{
+	struct get_branch_snapshot *skel = NULL;
+	int err;
+
+	if (create_perf_events()) {
+		test__skip();  /* system doesn't support LBR */
+		goto cleanup;
+	}
+
+	skel = get_branch_snapshot__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "get_branch_snapshot__open_and_load"))
+		goto cleanup;
+
+	err = kallsyms_find("bpf_testmod_loop_test", &skel->bss->address_low);
+	if (!ASSERT_OK(err, "kallsyms_find"))
+		goto cleanup;
+
+	err = kallsyms_find_next("bpf_testmod_loop_test", &skel->bss->address_high);
+	if (!ASSERT_OK(err, "kallsyms_find_next"))
+		goto cleanup;
+
+	err = get_branch_snapshot__attach(skel);
+	if (!ASSERT_OK(err, "get_branch_snapshot__attach"))
+		goto cleanup;
+
+	trigger_module_test_read(100);
+
+	if (skel->bss->total_entries < 16) {
+		/* too few entries for the hit/waste test */
+		test__skip();
+		goto cleanup;
+	}
+
+	ASSERT_GT(skel->bss->test1_hits, 6, "find_looptest_in_lbr");
+
+	/* Given we stop LBR in software, we will waste a few entries.
+	 * But we should try to waste as few as possible entries. We are at
+	 * about 7 on x86_64 systems.
+	 * Add a check for < 10 so that we get heads-up when something
+	 * changes and wastes too many entries.
+	 */
+	ASSERT_LT(skel->bss->wasted_entries, 10, "check_wasted_entries");
+
+cleanup:
+	get_branch_snapshot__destroy(skel);
+	close_perf_events();
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/module_attach.c b/tools/testing/selftests/bpf/prog_tests/module_attach.c
index d85a69b7ce44..1797a6e4d6d8 100644
--- a/tools/testing/selftests/bpf/prog_tests/module_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/module_attach.c
@@ -6,45 +6,6 @@
 
 static int duration;
 
-static int trigger_module_test_read(int read_sz)
-{
-	int fd, err;
-
-	fd = open("/sys/kernel/bpf_testmod", O_RDONLY);
-	err = -errno;
-	if (CHECK(fd < 0, "testmod_file_open", "failed: %d\n", err))
-		return err;
-
-	read(fd, NULL, read_sz);
-	close(fd);
-
-	return 0;
-}
-
-static int trigger_module_test_write(int write_sz)
-{
-	int fd, err;
-	char *buf = malloc(write_sz);
-
-	if (!buf)
-		return -ENOMEM;
-
-	memset(buf, 'a', write_sz);
-	buf[write_sz-1] = '\0';
-
-	fd = open("/sys/kernel/bpf_testmod", O_WRONLY);
-	err = -errno;
-	if (CHECK(fd < 0, "testmod_file_open", "failed: %d\n", err)) {
-		free(buf);
-		return err;
-	}
-
-	write(fd, buf, write_sz);
-	close(fd);
-	free(buf);
-	return 0;
-}
-
 static int delete_module(const char *name, int flags)
 {
 	return syscall(__NR_delete_module, name, flags);
diff --git a/tools/testing/selftests/bpf/progs/get_branch_snapshot.c b/tools/testing/selftests/bpf/progs/get_branch_snapshot.c
new file mode 100644
index 000000000000..a1b139888048
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/get_branch_snapshot.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+char _license[] SEC("license") = "GPL";
+
+__u64 test1_hits = 0;
+__u64 address_low = 0;
+__u64 address_high = 0;
+int wasted_entries = 0;
+long total_entries = 0;
+
+#define ENTRY_CNT 32
+struct perf_branch_entry entries[ENTRY_CNT] = {};
+
+static inline bool in_range(__u64 val)
+{
+	return (val >= address_low) && (val < address_high);
+}
+
+SEC("fexit/bpf_testmod_loop_test")
+int BPF_PROG(test1, int n, int ret)
+{
+	long i;
+
+	total_entries = bpf_get_branch_snapshot(entries, sizeof(entries), 0);
+	total_entries /= sizeof(struct perf_branch_entry);
+
+	for (i = 0; i < ENTRY_CNT; i++) {
+		if (i >= total_entries)
+			break;
+		if (in_range(entries[i].from) && in_range(entries[i].to))
+			test1_hits++;
+		else if (!test1_hits)
+			wasted_entries++;
+	}
+	return 0;
+}
diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index cc1cd240445d..2ed01f615d20 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -743,6 +743,45 @@ int cd_flavor_subdir(const char *exec_name)
 	return chdir(flavor);
 }
 
+int trigger_module_test_read(int read_sz)
+{
+	int fd, err;
+
+	fd = open("/sys/kernel/bpf_testmod", O_RDONLY);
+	err = -errno;
+	if (!ASSERT_GE(fd, 0, "testmod_file_open"))
+		return err;
+
+	read(fd, NULL, read_sz);
+	close(fd);
+
+	return 0;
+}
+
+int trigger_module_test_write(int write_sz)
+{
+	int fd, err;
+	char *buf = malloc(write_sz);
+
+	if (!buf)
+		return -ENOMEM;
+
+	memset(buf, 'a', write_sz);
+	buf[write_sz-1] = '\0';
+
+	fd = open("/sys/kernel/bpf_testmod", O_WRONLY);
+	err = -errno;
+	if (!ASSERT_GE(fd, 0, "testmod_file_open")) {
+		free(buf);
+		return err;
+	}
+
+	write(fd, buf, write_sz);
+	close(fd);
+	free(buf);
+	return 0;
+}
+
 #define MAX_BACKTRACE_SZ 128
 void crash_handler(int signum)
 {
diff --git a/tools/testing/selftests/bpf/test_progs.h b/tools/testing/selftests/bpf/test_progs.h
index c8c2bf878f67..94bef0aa74cf 100644
--- a/tools/testing/selftests/bpf/test_progs.h
+++ b/tools/testing/selftests/bpf/test_progs.h
@@ -291,6 +291,8 @@ int compare_map_keys(int map1_fd, int map2_fd);
 int compare_stack_ips(int smap_fd, int amap_fd, int stack_trace_len);
 int extract_build_id(char *build_id, size_t size);
 int kern_sync_rcu(void);
+int trigger_module_test_read(int read_sz);
+int trigger_module_test_write(int write_sz);
 
 #ifdef __x86_64__
 #define SYS_NANOSLEEP_KPROBE_NAME "__x64_sys_nanosleep"
diff --git a/tools/testing/selftests/bpf/trace_helpers.c b/tools/testing/selftests/bpf/trace_helpers.c
index e7a19b04d4ea..5100a169b72b 100644
--- a/tools/testing/selftests/bpf/trace_helpers.c
+++ b/tools/testing/selftests/bpf/trace_helpers.c
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -117,6 +118,42 @@ out:
 	return err;
 }
 
+/* find the address of the next symbol of the same type, this can be used
+ * to determine the end of a function.
+ */
+int kallsyms_find_next(const char *sym, unsigned long long *addr)
+{
+	char type, found_type, name[500];
+	unsigned long long value;
+	bool found = false;
+	int err = 0;
+	FILE *f;
+
+	f = fopen("/proc/kallsyms", "r");
+	if (!f)
+		return -EINVAL;
+
+	while (fscanf(f, "%llx %c %499s%*[^\n]\n", &value, &type, name) > 0) {
+		/* Different types of symbols in kernel modules are mixed
+		 * in /proc/kallsyms. Only return the next matching type.
+		 * Use tolower() for type so that 'T' matches 't'.
+		 */
+		if (found && found_type == tolower(type)) {
+			*addr = value;
+			goto out;
+		}
+		if (strcmp(name, sym) == 0) {
+			found = true;
+			found_type = tolower(type);
+		}
+	}
+	err = -ENOENT;
+
+out:
+	fclose(f);
+	return err;
+}
+
 void read_trace_pipe(void)
 {
 	int trace_fd;
diff --git a/tools/testing/selftests/bpf/trace_helpers.h b/tools/testing/selftests/bpf/trace_helpers.h
index d907b445524d..bc8ed86105d9 100644
--- a/tools/testing/selftests/bpf/trace_helpers.h
+++ b/tools/testing/selftests/bpf/trace_helpers.h
@@ -16,6 +16,11 @@ long ksym_get_addr(const char *name);
 /* open kallsyms and find addresses on the fly, faster than load + search. */
 int kallsyms_find(const char *sym, unsigned long long *addr);
 
+/* find the address of the next symbol, this can be used to determine the
+ * end of a function
+ */
+int kallsyms_find_next(const char *sym, unsigned long long *addr);
+
 void read_trace_pipe(void);
 
 ssize_t get_uprobe_offset(const void *addr, ssize_t base);
-- 
cgit v1.2.3


From dbd7eb14e0607afa1dd3aee7175f37022ecc5f03 Mon Sep 17 00:00:00 2001
From: Daniel Borkmann <daniel@iogearbox.net>
Date: Fri, 10 Sep 2021 11:19:00 +0200
Subject: bpf, selftests: Replicate tailcall limit test for indirect call case

The tailcall_3 test program uses bpf_tail_call_static() where the JIT
would patch a direct jump. Add a new tailcall_6 test program replicating
exactly the same test just ensuring that bpf_tail_call() uses a map
index where the verifier cannot make assumptions this time.

In other words, this will now cover both on x86-64 JIT, meaning, JIT
images with emit_bpf_tail_call_direct() emission as well as JIT images
with emit_bpf_tail_call_indirect() emission.

  # echo 1 > /proc/sys/net/core/bpf_jit_enable
  # ./test_progs -t tailcalls
  #136/1 tailcalls/tailcall_1:OK
  #136/2 tailcalls/tailcall_2:OK
  #136/3 tailcalls/tailcall_3:OK
  #136/4 tailcalls/tailcall_4:OK
  #136/5 tailcalls/tailcall_5:OK
  #136/6 tailcalls/tailcall_6:OK
  #136/7 tailcalls/tailcall_bpf2bpf_1:OK
  #136/8 tailcalls/tailcall_bpf2bpf_2:OK
  #136/9 tailcalls/tailcall_bpf2bpf_3:OK
  #136/10 tailcalls/tailcall_bpf2bpf_4:OK
  #136/11 tailcalls/tailcall_bpf2bpf_5:OK
  #136 tailcalls:OK
  Summary: 1/11 PASSED, 0 SKIPPED, 0 FAILED

  # echo 0 > /proc/sys/net/core/bpf_jit_enable
  # ./test_progs -t tailcalls
  #136/1 tailcalls/tailcall_1:OK
  #136/2 tailcalls/tailcall_2:OK
  #136/3 tailcalls/tailcall_3:OK
  #136/4 tailcalls/tailcall_4:OK
  #136/5 tailcalls/tailcall_5:OK
  #136/6 tailcalls/tailcall_6:OK
  [...]

For interpreter, the tailcall_1-6 tests are passing as well. The later
tailcall_bpf2bpf_* are failing due lack of bpf2bpf + tailcall support
in interpreter, so this is expected.

Also, manual inspection shows that both loaded programs from tailcall_3
and tailcall_6 test case emit the expected opcodes:

* tailcall_3 disasm, emit_bpf_tail_call_direct():

  [...]
   b:   push   %rax
   c:   push   %rbx
   d:   push   %r13
   f:   mov    %rdi,%rbx
  12:   movabs $0xffff8d3f5afb0200,%r13
  1c:   mov    %rbx,%rdi
  1f:   mov    %r13,%rsi
  22:   xor    %edx,%edx                 _
  24:   mov    -0x4(%rbp),%eax          |  limit check
  2a:   cmp    $0x20,%eax               |
  2d:   ja     0x0000000000000046       |
  2f:   add    $0x1,%eax                |
  32:   mov    %eax,-0x4(%rbp)          |_
  38:   nopl   0x0(%rax,%rax,1)
  3d:   pop    %r13
  3f:   pop    %rbx
  40:   pop    %rax
  41:   jmpq   0xffffffffffffe377
  [...]

* tailcall_6 disasm, emit_bpf_tail_call_indirect():

  [...]
  47:   movabs $0xffff8d3f59143a00,%rsi
  51:   mov    %edx,%edx
  53:   cmp    %edx,0x24(%rsi)
  56:   jbe    0x0000000000000093        _
  58:   mov    -0x4(%rbp),%eax          |  limit check
  5e:   cmp    $0x20,%eax               |
  61:   ja     0x0000000000000093       |
  63:   add    $0x1,%eax                |
  66:   mov    %eax,-0x4(%rbp)          |_
  6c:   mov    0x110(%rsi,%rdx,8),%rcx
  74:   test   %rcx,%rcx
  77:   je     0x0000000000000093
  79:   pop    %rax
  7a:   mov    0x30(%rcx),%rcx
  7e:   add    $0xb,%rcx
  82:   callq  0x000000000000008e
  87:   pause
  89:   lfence
  8c:   jmp    0x0000000000000087
  8e:   mov    %rcx,(%rsp)
  92:   retq
  [...]

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Acked-by: Paul Chaignon <paul@cilium.io>
Link: https://lore.kernel.org/bpf/CAM1=_QRyRVCODcXo_Y6qOm1iT163HoiSj8U2pZ8Rj3hzMTT=HQ@mail.gmail.com
Link: https://lore.kernel.org/bpf/20210910091900.16119-1-daniel@iogearbox.net
---
 tools/testing/selftests/bpf/prog_tests/tailcalls.c | 25 ++++++++++++----
 tools/testing/selftests/bpf/progs/tailcall6.c      | 34 ++++++++++++++++++++++
 2 files changed, 54 insertions(+), 5 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/tailcall6.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/tailcalls.c b/tools/testing/selftests/bpf/prog_tests/tailcalls.c
index b5940e6ca67c..7bf3a7a97d7b 100644
--- a/tools/testing/selftests/bpf/prog_tests/tailcalls.c
+++ b/tools/testing/selftests/bpf/prog_tests/tailcalls.c
@@ -219,10 +219,7 @@ out:
 	bpf_object__close(obj);
 }
 
-/* test_tailcall_3 checks that the count value of the tail call limit
- * enforcement matches with expectations.
- */
-static void test_tailcall_3(void)
+static void test_tailcall_count(const char *which)
 {
 	int err, map_fd, prog_fd, main_fd, data_fd, i, val;
 	struct bpf_map *prog_array, *data_map;
@@ -231,7 +228,7 @@ static void test_tailcall_3(void)
 	__u32 retval, duration;
 	char buff[128] = {};
 
-	err = bpf_prog_load("tailcall3.o", BPF_PROG_TYPE_SCHED_CLS, &obj,
+	err = bpf_prog_load(which, BPF_PROG_TYPE_SCHED_CLS, &obj,
 			    &prog_fd);
 	if (CHECK_FAIL(err))
 		return;
@@ -296,6 +293,22 @@ out:
 	bpf_object__close(obj);
 }
 
+/* test_tailcall_3 checks that the count value of the tail call limit
+ * enforcement matches with expectations. JIT uses direct jump.
+ */
+static void test_tailcall_3(void)
+{
+	test_tailcall_count("tailcall3.o");
+}
+
+/* test_tailcall_6 checks that the count value of the tail call limit
+ * enforcement matches with expectations. JIT uses indirect jump.
+ */
+static void test_tailcall_6(void)
+{
+	test_tailcall_count("tailcall6.o");
+}
+
 /* test_tailcall_4 checks that the kernel properly selects indirect jump
  * for the case where the key is not known. Latter is passed via global
  * data to select different targets we can compare return value of.
@@ -822,6 +835,8 @@ void test_tailcalls(void)
 		test_tailcall_4();
 	if (test__start_subtest("tailcall_5"))
 		test_tailcall_5();
+	if (test__start_subtest("tailcall_6"))
+		test_tailcall_6();
 	if (test__start_subtest("tailcall_bpf2bpf_1"))
 		test_tailcall_bpf2bpf_1();
 	if (test__start_subtest("tailcall_bpf2bpf_2"))
diff --git a/tools/testing/selftests/bpf/progs/tailcall6.c b/tools/testing/selftests/bpf/progs/tailcall6.c
new file mode 100644
index 000000000000..0f4a811cc028
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/tailcall6.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/bpf.h>
+
+#include <bpf/bpf_helpers.h>
+
+struct {
+	__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
+	__uint(max_entries, 1);
+	__uint(key_size, sizeof(__u32));
+	__uint(value_size, sizeof(__u32));
+} jmp_table SEC(".maps");
+
+int count, which;
+
+SEC("classifier/0")
+int bpf_func_0(struct __sk_buff *skb)
+{
+	count++;
+	if (__builtin_constant_p(which))
+		__bpf_unreachable();
+	bpf_tail_call(skb, &jmp_table, which);
+	return 1;
+}
+
+SEC("classifier")
+int entry(struct __sk_buff *skb)
+{
+	if (__builtin_constant_p(which))
+		__bpf_unreachable();
+	bpf_tail_call(skb, &jmp_table, which);
+	return 0;
+}
+
+char __license[] SEC("license") = "GPL";
-- 
cgit v1.2.3


From 53df63ccdc0258118e53089197d0428c5330cc9c Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Mon, 13 Sep 2021 18:47:30 -0700
Subject: selftests/bpf: Update selftests to always provide "struct_ops" SEC

Update struct_ops selftests to always specify "struct_ops" section
prefix. Libbpf will require a proper BPF program type set in the next
patch, so this prevents tests breaking.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20210914014733.2768-2-andrii@kernel.org
---
 tools/testing/selftests/bpf/progs/bpf_cubic.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/bpf_cubic.c b/tools/testing/selftests/bpf/progs/bpf_cubic.c
index f62df4d023f9..d9660e7200e2 100644
--- a/tools/testing/selftests/bpf/progs/bpf_cubic.c
+++ b/tools/testing/selftests/bpf/progs/bpf_cubic.c
@@ -169,11 +169,7 @@ static __always_inline void bictcp_hystart_reset(struct sock *sk)
 	ca->sample_cnt = 0;
 }
 
-/* "struct_ops/" prefix is not a requirement
- * It will be recognized as BPF_PROG_TYPE_STRUCT_OPS
- * as long as it is used in one of the func ptr
- * under SEC(".struct_ops").
- */
+/* "struct_ops/" prefix is a requirement */
 SEC("struct_ops/bpf_cubic_init")
 void BPF_PROG(bpf_cubic_init, struct sock *sk)
 {
@@ -188,10 +184,8 @@ void BPF_PROG(bpf_cubic_init, struct sock *sk)
 		tcp_sk(sk)->snd_ssthresh = initial_ssthresh;
 }
 
-/* No prefix in SEC will also work.
- * The remaining tcp-cubic functions have an easier way.
- */
-SEC("no-sec-prefix-bictcp_cwnd_event")
+/* "struct_ops" prefix is a requirement */
+SEC("struct_ops/bpf_cubic_cwnd_event")
 void BPF_PROG(bpf_cubic_cwnd_event, struct sock *sk, enum tcp_ca_event event)
 {
 	if (event == CA_EVENT_TX_START) {
-- 
cgit v1.2.3


From c0354077439bc9adcc9f2c96d6bbaf8b13748317 Mon Sep 17 00:00:00 2001
From: Jie Meng <jmeng@fb.com>
Date: Mon, 13 Sep 2021 14:13:37 -0700
Subject: bpf,x64 Emit IMUL instead of MUL for x86-64

IMUL allows for multiple operands and saving and storing rax/rdx is no
longer needed. Signedness of the operands doesn't matter here because
the we only keep the lower 32/64 bit of the product for 32/64 bit
multiplications.

Signed-off-by: Jie Meng <jmeng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210913211337.1564014-1-jmeng@fb.com
---
 arch/x86/net/bpf_jit_comp.c                | 53 +++++++++++++-----------------
 tools/testing/selftests/bpf/verifier/jit.c | 22 +++++++++++--
 2 files changed, 42 insertions(+), 33 deletions(-)

(limited to 'tools/testing')

diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 0fe6aacef3db..20d2d6a1f9de 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -1070,41 +1070,34 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
 			break;
 
 		case BPF_ALU | BPF_MUL | BPF_K:
-		case BPF_ALU | BPF_MUL | BPF_X:
 		case BPF_ALU64 | BPF_MUL | BPF_K:
-		case BPF_ALU64 | BPF_MUL | BPF_X:
-		{
-			bool is64 = BPF_CLASS(insn->code) == BPF_ALU64;
+			if (BPF_CLASS(insn->code) == BPF_ALU64)
+				EMIT1(add_2mod(0x48, dst_reg, dst_reg));
+			else if (is_ereg(dst_reg))
+				EMIT1(add_2mod(0x40, dst_reg, dst_reg));
 
-			if (dst_reg != BPF_REG_0)
-				EMIT1(0x50); /* push rax */
-			if (dst_reg != BPF_REG_3)
-				EMIT1(0x52); /* push rdx */
+			if (is_imm8(imm32))
+				/* imul dst_reg, dst_reg, imm8 */
+				EMIT3(0x6B, add_2reg(0xC0, dst_reg, dst_reg),
+				      imm32);
+			else
+				/* imul dst_reg, dst_reg, imm32 */
+				EMIT2_off32(0x69,
+					    add_2reg(0xC0, dst_reg, dst_reg),
+					    imm32);
+			break;
 
-			/* mov r11, dst_reg */
-			EMIT_mov(AUX_REG, dst_reg);
+		case BPF_ALU | BPF_MUL | BPF_X:
+		case BPF_ALU64 | BPF_MUL | BPF_X:
+			if (BPF_CLASS(insn->code) == BPF_ALU64)
+				EMIT1(add_2mod(0x48, src_reg, dst_reg));
+			else if (is_ereg(dst_reg) || is_ereg(src_reg))
+				EMIT1(add_2mod(0x40, src_reg, dst_reg));
 
-			if (BPF_SRC(insn->code) == BPF_X)
-				emit_mov_reg(&prog, is64, BPF_REG_0, src_reg);
-			else
-				emit_mov_imm32(&prog, is64, BPF_REG_0, imm32);
-
-			if (is64)
-				EMIT1(add_1mod(0x48, AUX_REG));
-			else if (is_ereg(AUX_REG))
-				EMIT1(add_1mod(0x40, AUX_REG));
-			/* mul(q) r11 */
-			EMIT2(0xF7, add_1reg(0xE0, AUX_REG));
-
-			if (dst_reg != BPF_REG_3)
-				EMIT1(0x5A); /* pop rdx */
-			if (dst_reg != BPF_REG_0) {
-				/* mov dst_reg, rax */
-				EMIT_mov(dst_reg, BPF_REG_0);
-				EMIT1(0x58); /* pop rax */
-			}
+			/* imul dst_reg, src_reg */
+			EMIT3(0x0F, 0xAF, add_2reg(0xC0, src_reg, dst_reg));
 			break;
-		}
+
 			/* Shifts */
 		case BPF_ALU | BPF_LSH | BPF_K:
 		case BPF_ALU | BPF_RSH | BPF_K:
diff --git a/tools/testing/selftests/bpf/verifier/jit.c b/tools/testing/selftests/bpf/verifier/jit.c
index df215e004566..eedcb752bf70 100644
--- a/tools/testing/selftests/bpf/verifier/jit.c
+++ b/tools/testing/selftests/bpf/verifier/jit.c
@@ -62,6 +62,11 @@
 	BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
 	BPF_MOV64_IMM(BPF_REG_0, 1),
 	BPF_EXIT_INSN(),
+	BPF_LD_IMM64(BPF_REG_3, 0xfefefeULL),
+	BPF_ALU64_IMM(BPF_MUL, BPF_REG_3, 0xefefef),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
 	BPF_MOV32_REG(BPF_REG_2, BPF_REG_2),
 	BPF_LD_IMM64(BPF_REG_0, 0xfefefeULL),
 	BPF_ALU32_REG(BPF_MUL, BPF_REG_0, BPF_REG_1),
@@ -73,11 +78,22 @@
 	BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
 	BPF_MOV64_IMM(BPF_REG_0, 1),
 	BPF_EXIT_INSN(),
+	BPF_LD_IMM64(BPF_REG_3, 0xfefefeULL),
+	BPF_ALU32_IMM(BPF_MUL, BPF_REG_3, 0xefefef),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	BPF_LD_IMM64(BPF_REG_0, 0xfefefeULL),
+	BPF_LD_IMM64(BPF_REG_2, 0x2ad4d4aaULL),
+	BPF_ALU32_IMM(BPF_MUL, BPF_REG_0, 0x2b),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_2, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
 	BPF_LD_IMM64(BPF_REG_0, 0x952a7bbcULL),
 	BPF_LD_IMM64(BPF_REG_1, 0xfefefeULL),
-	BPF_LD_IMM64(BPF_REG_2, 0xeeff0d413122ULL),
-	BPF_ALU32_REG(BPF_MUL, BPF_REG_2, BPF_REG_1),
-	BPF_JMP_REG(BPF_JEQ, BPF_REG_2, BPF_REG_0, 2),
+	BPF_LD_IMM64(BPF_REG_5, 0xeeff0d413122ULL),
+	BPF_ALU32_REG(BPF_MUL, BPF_REG_5, BPF_REG_1),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_5, BPF_REG_0, 2),
 	BPF_MOV64_IMM(BPF_REG_0, 1),
 	BPF_EXIT_INSN(),
 	BPF_MOV64_IMM(BPF_REG_0, 2),
-- 
cgit v1.2.3


From 8987ede3ed276f669eb88d952184e1d2bf42ea6b Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Tue, 14 Sep 2021 09:22:28 -0700
Subject: selftests/bpf: Fix .gitignore to not ignore test_progs.c

List all possible test_progs flavors explicitly to avoid accidentally
ignoring valid source code files. In this case, test_progs.c was still
ignored after recent 809ed84de8b3 ("selftests/bpf: Whitelist test_progs.h
from .gitignore") fix that added exception only for test_progs.h.

Fixes: 74b5a5968fe8 ("selftests/bpf: Replace test_progs and test_maps w/ general rule")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210914162228.3995740-1-andrii@kernel.org
---
 tools/testing/selftests/bpf/.gitignore | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore
index 433f8bef261e..1dad8d617da8 100644
--- a/tools/testing/selftests/bpf/.gitignore
+++ b/tools/testing/selftests/bpf/.gitignore
@@ -9,8 +9,9 @@ test_tag
 FEATURE-DUMP.libbpf
 fixdep
 test_dev_cgroup
-/test_progs*
-!test_progs.h
+/test_progs
+/test_progs-no_alu32
+/test_progs-bpf_gcc
 test_verifier_log
 feature
 test_sock
-- 
cgit v1.2.3


From 71d29c2d47d112404fe23e31cf33f7cccde75a8c Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Tue, 14 Sep 2021 15:30:36 -0700
Subject: selftests/bpf: Test libbpf API function btf__add_tag()

Add btf_write tests with btf__add_tag() function.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210914223036.247560-1-yhs@fb.com
---
 tools/testing/selftests/bpf/btf_helpers.c          |  7 ++++++-
 tools/testing/selftests/bpf/prog_tests/btf_write.c | 21 +++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/btf_helpers.c b/tools/testing/selftests/bpf/btf_helpers.c
index b692e6ead9b5..ce103fb0ad1b 100644
--- a/tools/testing/selftests/bpf/btf_helpers.c
+++ b/tools/testing/selftests/bpf/btf_helpers.c
@@ -24,11 +24,12 @@ static const char * const btf_kind_str_mapping[] = {
 	[BTF_KIND_VAR]		= "VAR",
 	[BTF_KIND_DATASEC]	= "DATASEC",
 	[BTF_KIND_FLOAT]	= "FLOAT",
+	[BTF_KIND_TAG]		= "TAG",
 };
 
 static const char *btf_kind_str(__u16 kind)
 {
-	if (kind > BTF_KIND_DATASEC)
+	if (kind > BTF_KIND_TAG)
 		return "UNKNOWN";
 	return btf_kind_str_mapping[kind];
 }
@@ -177,6 +178,10 @@ int fprintf_btf_type_raw(FILE *out, const struct btf *btf, __u32 id)
 	case BTF_KIND_FLOAT:
 		fprintf(out, " size=%u", t->size);
 		break;
+	case BTF_KIND_TAG:
+		fprintf(out, " type_id=%u component_idx=%d",
+			t->type, btf_tag(t)->component_idx);
+		break;
 	default:
 		break;
 	}
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_write.c b/tools/testing/selftests/bpf/prog_tests/btf_write.c
index 022c7d89d6f4..76548eecce2c 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_write.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_write.c
@@ -281,5 +281,26 @@ void test_btf_write() {
 		     "[17] DATASEC 'datasec1' size=12 vlen=1\n"
 		     "\ttype_id=1 offset=4 size=8", "raw_dump");
 
+	/* TAG */
+	id = btf__add_tag(btf, "tag1", 16, -1);
+	ASSERT_EQ(id, 18, "tag_id");
+	t = btf__type_by_id(btf, 18);
+	ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag1", "tag_value");
+	ASSERT_EQ(btf_kind(t), BTF_KIND_TAG, "tag_kind");
+	ASSERT_EQ(t->type, 16, "tag_type");
+	ASSERT_EQ(btf_tag(t)->component_idx, -1, "tag_component_idx");
+	ASSERT_STREQ(btf_type_raw_dump(btf, 18),
+		     "[18] TAG 'tag1' type_id=16 component_idx=-1", "raw_dump");
+
+	id = btf__add_tag(btf, "tag2", 14, 1);
+	ASSERT_EQ(id, 19, "tag_id");
+	t = btf__type_by_id(btf, 19);
+	ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag2", "tag_value");
+	ASSERT_EQ(btf_kind(t), BTF_KIND_TAG, "tag_kind");
+	ASSERT_EQ(t->type, 14, "tag_type");
+	ASSERT_EQ(btf_tag(t)->component_idx, 1, "tag_component_idx");
+	ASSERT_STREQ(btf_type_raw_dump(btf, 19),
+		     "[19] TAG 'tag2' type_id=14 component_idx=1", "raw_dump");
+
 	btf__free(btf);
 }
-- 
cgit v1.2.3


From 3df3bd68d4811bccc74adc04d4d84512957a1a07 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Tue, 14 Sep 2021 15:30:41 -0700
Subject: selftests/bpf: Change NAME_NTH/IS_NAME_NTH for BTF_KIND_TAG format

BTF_KIND_TAG ELF format has a component_idx which might have value -1.
test_btf may confuse it with common_type.name as NAME_NTH checkes
high 16bit to be 0xffff. Change NAME_NTH high 16bit check to be
0xfffe so it won't confuse with component_idx.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210914223041.248009-1-yhs@fb.com
---
 tools/testing/selftests/bpf/prog_tests/btf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index 649f87382c8d..ad39f4d588d0 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -39,8 +39,8 @@ static bool always_log;
 #define BTF_END_RAW 0xdeadbeef
 #define NAME_TBD 0xdeadb33f
 
-#define NAME_NTH(N) (0xffff0000 | N)
-#define IS_NAME_NTH(X) ((X & 0xffff0000) == 0xffff0000)
+#define NAME_NTH(N) (0xfffe0000 | N)
+#define IS_NAME_NTH(X) ((X & 0xffff0000) == 0xfffe0000)
 #define GET_NAME_NTH_IDX(X) (X & 0x0000ffff)
 
 #define MAX_NR_RAW_U32 1024
-- 
cgit v1.2.3


From 35baba7a832fa466b4aa2e0d00473d795cec8f20 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Tue, 14 Sep 2021 15:30:47 -0700
Subject: selftests/bpf: Add BTF_KIND_TAG unit tests

Test good and bad variants of BTF_KIND_TAG encoding.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210914223047.248223-1-yhs@fb.com
---
 tools/testing/selftests/bpf/prog_tests/btf.c | 245 +++++++++++++++++++++++++++
 tools/testing/selftests/bpf/test_btf.h       |   3 +
 2 files changed, 248 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index ad39f4d588d0..b4e86a8423cb 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -3661,6 +3661,249 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "Invalid type_size",
 },
 
+{
+	.descr = "tag test #1, struct/member, well-formed",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_STRUCT_ENC(0, 2, 8),			/* [2] */
+		BTF_MEMBER_ENC(NAME_TBD, 1, 0),
+		BTF_MEMBER_ENC(NAME_TBD, 1, 32),
+		BTF_TAG_ENC(NAME_TBD, 2, -1),
+		BTF_TAG_ENC(NAME_TBD, 2, 0),
+		BTF_TAG_ENC(NAME_TBD, 2, 1),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0m1\0m2\0tag1\0tag2\0tag3"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 8,
+	.key_type_id = 1,
+	.value_type_id = 2,
+	.max_entries = 1,
+},
+{
+	.descr = "tag test #2, union/member, well-formed",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_UNION_ENC(NAME_TBD, 2, 4),			/* [2] */
+		BTF_MEMBER_ENC(NAME_TBD, 1, 0),
+		BTF_MEMBER_ENC(NAME_TBD, 1, 0),
+		BTF_TAG_ENC(NAME_TBD, 2, -1),
+		BTF_TAG_ENC(NAME_TBD, 2, 0),
+		BTF_TAG_ENC(NAME_TBD, 2, 1),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 2,
+	.max_entries = 1,
+},
+{
+	.descr = "tag test #3, variable, well-formed",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
+		BTF_VAR_ENC(NAME_TBD, 1, 1),			/* [3] */
+		BTF_TAG_ENC(NAME_TBD, 2, -1),
+		BTF_TAG_ENC(NAME_TBD, 3, -1),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0local\0global\0tag1\0tag2"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+},
+{
+	.descr = "tag test #4, func/parameter, well-formed",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_FUNC_PROTO_ENC(0, 2),			/* [2] */
+			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
+			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
+		BTF_FUNC_ENC(NAME_TBD, 2),			/* [3] */
+		BTF_TAG_ENC(NAME_TBD, 3, -1),
+		BTF_TAG_ENC(NAME_TBD, 3, 0),
+		BTF_TAG_ENC(NAME_TBD, 3, 1),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0arg1\0arg2\0f\0tag1\0tag2\0tag3"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+},
+{
+	.descr = "tag test #5, invalid value",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
+		BTF_TAG_ENC(0, 2, -1),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0local\0tag"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "Invalid value",
+},
+{
+	.descr = "tag test #6, invalid target type",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_TAG_ENC(NAME_TBD, 1, -1),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0tag1"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "Invalid type",
+},
+{
+	.descr = "tag test #7, invalid vlen",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
+		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_TAG, 0, 1), 2), (0),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0local\0tag1"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "vlen != 0",
+},
+{
+	.descr = "tag test #8, invalid kflag",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
+		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_TAG, 1, 0), 2), (-1),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0local\0tag1"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "Invalid btf_info kind_flag",
+},
+{
+	.descr = "tag test #9, var, invalid component_idx",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
+		BTF_TAG_ENC(NAME_TBD, 2, 0),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0local\0tag"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "Invalid component_idx",
+},
+{
+	.descr = "tag test #10, struct member, invalid component_idx",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_STRUCT_ENC(0, 2, 8),			/* [2] */
+		BTF_MEMBER_ENC(NAME_TBD, 1, 0),
+		BTF_MEMBER_ENC(NAME_TBD, 1, 32),
+		BTF_TAG_ENC(NAME_TBD, 2, 2),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0m1\0m2\0tag"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 8,
+	.key_type_id = 1,
+	.value_type_id = 2,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "Invalid component_idx",
+},
+{
+	.descr = "tag test #11, func parameter, invalid component_idx",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_FUNC_PROTO_ENC(0, 2),			/* [2] */
+			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
+			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
+		BTF_FUNC_ENC(NAME_TBD, 2),			/* [3] */
+		BTF_TAG_ENC(NAME_TBD, 3, 2),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0arg1\0arg2\0f\0tag"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "Invalid component_idx",
+},
+{
+	.descr = "tag test #12, < -1 component_idx",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_FUNC_PROTO_ENC(0, 2),			/* [2] */
+			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
+			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
+		BTF_FUNC_ENC(NAME_TBD, 2),			/* [3] */
+		BTF_TAG_ENC(NAME_TBD, 3, -2),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0arg1\0arg2\0f\0tag"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "Invalid component_idx",
+},
+
 }; /* struct btf_raw_test raw_tests[] */
 
 static const char *get_next_str(const char *start, const char *end)
@@ -6801,6 +7044,8 @@ static int btf_type_size(const struct btf_type *t)
 		return base_size + sizeof(struct btf_var);
 	case BTF_KIND_DATASEC:
 		return base_size + vlen * sizeof(struct btf_var_secinfo);
+	case BTF_KIND_TAG:
+		return base_size + sizeof(struct btf_tag);
 	default:
 		fprintf(stderr, "Unsupported BTF_KIND:%u\n", kind);
 		return -EINVAL;
diff --git a/tools/testing/selftests/bpf/test_btf.h b/tools/testing/selftests/bpf/test_btf.h
index e2394eea4b7f..0619e06d745e 100644
--- a/tools/testing/selftests/bpf/test_btf.h
+++ b/tools/testing/selftests/bpf/test_btf.h
@@ -69,4 +69,7 @@
 #define BTF_TYPE_FLOAT_ENC(name, sz) \
 	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FLOAT, 0, 0), sz)
 
+#define BTF_TAG_ENC(value, type, component_idx)	\
+	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_TAG, 0, 0), type), (component_idx)
+
 #endif /* _TEST_BTF_H */
-- 
cgit v1.2.3


From ad526474aec1d9abb9838e3fb1330bb991715c22 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Tue, 14 Sep 2021 15:30:52 -0700
Subject: selftests/bpf: Test BTF_KIND_TAG for deduplication

Add unit tests for BTF_KIND_TAG deduplication for
  - struct and struct member
  - variable
  - func and func argument

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210914223052.248535-1-yhs@fb.com
---
 tools/testing/selftests/bpf/prog_tests/btf.c | 192 ++++++++++++++++++++++++---
 1 file changed, 175 insertions(+), 17 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index b4e86a8423cb..9c85d7d27409 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -6664,27 +6664,33 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_MEMBER_ENC(NAME_NTH(4), 5, 64),	/* const int *a;	*/
 				BTF_MEMBER_ENC(NAME_NTH(5), 2, 128),	/* int b[16];		*/
 				BTF_MEMBER_ENC(NAME_NTH(6), 1, 640),	/* int c;		*/
-				BTF_MEMBER_ENC(NAME_NTH(8), 13, 672),	/* float d;		*/
+				BTF_MEMBER_ENC(NAME_NTH(8), 15, 672),	/* float d;		*/
 			/* ptr -> [3] struct s */
 			BTF_PTR_ENC(3),							/* [4] */
 			/* ptr -> [6] const int */
 			BTF_PTR_ENC(6),							/* [5] */
 			/* const -> [1] int */
 			BTF_CONST_ENC(1),						/* [6] */
+			/* tag -> [3] struct s */
+			BTF_TAG_ENC(NAME_NTH(2), 3, -1),				/* [7] */
+			/* tag -> [3] struct s, member 1 */
+			BTF_TAG_ENC(NAME_NTH(2), 3, 1),					/* [8] */
 
 			/* full copy of the above */
-			BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),	/* [7] */
-			BTF_TYPE_ARRAY_ENC(7, 7, 16),					/* [8] */
-			BTF_STRUCT_ENC(NAME_NTH(2), 5, 88),				/* [9] */
-				BTF_MEMBER_ENC(NAME_NTH(3), 10, 0),
-				BTF_MEMBER_ENC(NAME_NTH(4), 11, 64),
-				BTF_MEMBER_ENC(NAME_NTH(5), 8, 128),
-				BTF_MEMBER_ENC(NAME_NTH(6), 7, 640),
-				BTF_MEMBER_ENC(NAME_NTH(8), 13, 672),
-			BTF_PTR_ENC(9),							/* [10] */
-			BTF_PTR_ENC(12),						/* [11] */
-			BTF_CONST_ENC(7),						/* [12] */
-			BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4),				/* [13] */
+			BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),	/* [9] */
+			BTF_TYPE_ARRAY_ENC(9, 9, 16),					/* [10] */
+			BTF_STRUCT_ENC(NAME_NTH(2), 5, 88),				/* [11] */
+				BTF_MEMBER_ENC(NAME_NTH(3), 12, 0),
+				BTF_MEMBER_ENC(NAME_NTH(4), 13, 64),
+				BTF_MEMBER_ENC(NAME_NTH(5), 10, 128),
+				BTF_MEMBER_ENC(NAME_NTH(6), 9, 640),
+				BTF_MEMBER_ENC(NAME_NTH(8), 15, 672),
+			BTF_PTR_ENC(11),						/* [12] */
+			BTF_PTR_ENC(14),						/* [13] */
+			BTF_CONST_ENC(9),						/* [14] */
+			BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4),				/* [15] */
+			BTF_TAG_ENC(NAME_NTH(2), 11, -1),				/* [16] */
+			BTF_TAG_ENC(NAME_NTH(2), 11, 1),				/* [17] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0int\0s\0next\0a\0b\0c\0float\0d"),
@@ -6701,14 +6707,16 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_MEMBER_ENC(NAME_NTH(1), 5, 64),	/* const int *a;	*/
 				BTF_MEMBER_ENC(NAME_NTH(2), 2, 128),	/* int b[16];		*/
 				BTF_MEMBER_ENC(NAME_NTH(3), 1, 640),	/* int c;		*/
-				BTF_MEMBER_ENC(NAME_NTH(4), 7, 672),	/* float d;		*/
+				BTF_MEMBER_ENC(NAME_NTH(4), 9, 672),	/* float d;		*/
 			/* ptr -> [3] struct s */
 			BTF_PTR_ENC(3),							/* [4] */
 			/* ptr -> [6] const int */
 			BTF_PTR_ENC(6),							/* [5] */
 			/* const -> [1] int */
 			BTF_CONST_ENC(1),						/* [6] */
-			BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4),				/* [7] */
+			BTF_TAG_ENC(NAME_NTH(2), 3, -1),				/* [7] */
+			BTF_TAG_ENC(NAME_NTH(2), 3, 1),					/* [8] */
+			BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4),				/* [9] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0a\0b\0c\0d\0int\0float\0next\0s"),
@@ -6833,9 +6841,11 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
 			BTF_FUNC_ENC(NAME_TBD, 12),					/* [13] func */
 			BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),				/* [14] float */
+			BTF_TAG_ENC(NAME_TBD, 13, -1),					/* [15] tag */
+			BTF_TAG_ENC(NAME_TBD, 13, 1),					/* [16] tag */
 			BTF_END_RAW,
 		},
-		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N"),
+		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P"),
 	},
 	.expect = {
 		.raw_types = {
@@ -6859,9 +6869,11 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
 			BTF_FUNC_ENC(NAME_TBD, 12),					/* [13] func */
 			BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),				/* [14] float */
+			BTF_TAG_ENC(NAME_TBD, 13, -1),					/* [15] tag */
+			BTF_TAG_ENC(NAME_TBD, 13, 1),					/* [16] tag */
 			BTF_END_RAW,
 		},
-		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N"),
+		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P"),
 	},
 	.opts = {
 		.dont_resolve_fwds = false,
@@ -7010,6 +7022,152 @@ const struct btf_dedup_test dedup_tests[] = {
 		.dedup_table_size = 1
 	},
 },
+{
+	.descr = "dedup: func/func_arg/var tags",
+	.input = {
+		.raw_types = {
+			/* int */
+			BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+			/* static int t */
+			BTF_VAR_ENC(NAME_NTH(1), 1, 0),			/* [2] */
+			/* void f(int a1, int a2) */
+			BTF_FUNC_PROTO_ENC(0, 2),			/* [3] */
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(3), 1),
+			BTF_FUNC_ENC(NAME_NTH(4), 2),			/* [4] */
+			/* tag -> t */
+			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
+			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [6] */
+			/* tag -> func */
+			BTF_TAG_ENC(NAME_NTH(5), 4, -1),		/* [7] */
+			BTF_TAG_ENC(NAME_NTH(5), 4, -1),		/* [8] */
+			/* tag -> func arg a1 */
+			BTF_TAG_ENC(NAME_NTH(5), 4, 1),			/* [9] */
+			BTF_TAG_ENC(NAME_NTH(5), 4, 1),			/* [10] */
+			BTF_END_RAW,
+		},
+		BTF_STR_SEC("\0t\0a1\0a2\0f\0tag"),
+	},
+	.expect = {
+		.raw_types = {
+			BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+			BTF_VAR_ENC(NAME_NTH(1), 1, 0),			/* [2] */
+			BTF_FUNC_PROTO_ENC(0, 2),			/* [3] */
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(3), 1),
+			BTF_FUNC_ENC(NAME_NTH(4), 2),			/* [4] */
+			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
+			BTF_TAG_ENC(NAME_NTH(5), 4, -1),		/* [6] */
+			BTF_TAG_ENC(NAME_NTH(5), 4, 1),			/* [7] */
+			BTF_END_RAW,
+		},
+		BTF_STR_SEC("\0t\0a1\0a2\0f\0tag"),
+	},
+	.opts = {
+		.dont_resolve_fwds = false,
+	},
+},
+{
+	.descr = "dedup: func/func_param tags",
+	.input = {
+		.raw_types = {
+			/* int */
+			BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+			/* void f(int a1, int a2) */
+			BTF_FUNC_PROTO_ENC(0, 2),			/* [2] */
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 1),
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
+			BTF_FUNC_ENC(NAME_NTH(3), 2),			/* [3] */
+			/* void f(int a1, int a2) */
+			BTF_FUNC_PROTO_ENC(0, 2),			/* [4] */
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 1),
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
+			BTF_FUNC_ENC(NAME_NTH(3), 4),			/* [5] */
+			/* tag -> f: tag1, tag2 */
+			BTF_TAG_ENC(NAME_NTH(4), 3, -1),		/* [6] */
+			BTF_TAG_ENC(NAME_NTH(5), 3, -1),		/* [7] */
+			/* tag -> f/a2: tag1, tag2 */
+			BTF_TAG_ENC(NAME_NTH(4), 3, 1),			/* [8] */
+			BTF_TAG_ENC(NAME_NTH(5), 3, 1),			/* [9] */
+			/* tag -> f: tag1, tag3 */
+			BTF_TAG_ENC(NAME_NTH(4), 5, -1),		/* [10] */
+			BTF_TAG_ENC(NAME_NTH(6), 5, -1),		/* [11] */
+			/* tag -> f/a2: tag1, tag3 */
+			BTF_TAG_ENC(NAME_NTH(4), 5, 1),			/* [12] */
+			BTF_TAG_ENC(NAME_NTH(6), 5, 1),			/* [13] */
+			BTF_END_RAW,
+		},
+		BTF_STR_SEC("\0a1\0a2\0f\0tag1\0tag2\0tag3"),
+	},
+	.expect = {
+		.raw_types = {
+			BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+			BTF_FUNC_PROTO_ENC(0, 2),			/* [2] */
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 1),
+				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
+			BTF_FUNC_ENC(NAME_NTH(3), 2),			/* [3] */
+			BTF_TAG_ENC(NAME_NTH(4), 3, -1),		/* [4] */
+			BTF_TAG_ENC(NAME_NTH(5), 3, -1),		/* [5] */
+			BTF_TAG_ENC(NAME_NTH(6), 3, -1),		/* [6] */
+			BTF_TAG_ENC(NAME_NTH(4), 3, 1),			/* [7] */
+			BTF_TAG_ENC(NAME_NTH(5), 3, 1),			/* [8] */
+			BTF_TAG_ENC(NAME_NTH(6), 3, 1),			/* [9] */
+			BTF_END_RAW,
+		},
+		BTF_STR_SEC("\0a1\0a2\0f\0tag1\0tag2\0tag3"),
+	},
+	.opts = {
+		.dont_resolve_fwds = false,
+	},
+},
+{
+	.descr = "dedup: struct/struct_member tags",
+	.input = {
+		.raw_types = {
+			/* int */
+			BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+			BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),		/* [2] */
+				BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
+				BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
+			BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),		/* [3] */
+				BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
+				BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
+			/* tag -> t: tag1, tag2 */
+			BTF_TAG_ENC(NAME_NTH(4), 2, -1),		/* [4] */
+			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
+			/* tag -> t/m2: tag1, tag2 */
+			BTF_TAG_ENC(NAME_NTH(4), 2, 1),			/* [6] */
+			BTF_TAG_ENC(NAME_NTH(5), 2, 1),			/* [7] */
+			/* tag -> t: tag1, tag3 */
+			BTF_TAG_ENC(NAME_NTH(4), 3, -1),		/* [8] */
+			BTF_TAG_ENC(NAME_NTH(6), 3, -1),		/* [9] */
+			/* tag -> t/m2: tag1, tag3 */
+			BTF_TAG_ENC(NAME_NTH(4), 3, 1),			/* [10] */
+			BTF_TAG_ENC(NAME_NTH(6), 3, 1),			/* [11] */
+			BTF_END_RAW,
+		},
+		BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
+	},
+	.expect = {
+		.raw_types = {
+			BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+			BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),		/* [2] */
+				BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
+				BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
+			BTF_TAG_ENC(NAME_NTH(4), 2, -1),		/* [3] */
+			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [4] */
+			BTF_TAG_ENC(NAME_NTH(6), 2, -1),		/* [5] */
+			BTF_TAG_ENC(NAME_NTH(4), 2, 1),			/* [6] */
+			BTF_TAG_ENC(NAME_NTH(5), 2, 1),			/* [7] */
+			BTF_TAG_ENC(NAME_NTH(6), 2, 1),			/* [8] */
+			BTF_END_RAW,
+		},
+		BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
+	},
+	.opts = {
+		.dont_resolve_fwds = false,
+	},
+},
 
 };
 
-- 
cgit v1.2.3


From c240ba28789063690077d282f8f89e03f31037d0 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Tue, 14 Sep 2021 15:30:58 -0700
Subject: selftests/bpf: Add a test with a bpf program with btf_tag attributes

Add a bpf program with btf_tag attributes. The program is
loaded successfully with the kernel. With the command
  bpftool btf dump file ./tag.o
the following dump shows that tags are properly encoded:
  [8] STRUCT 'key_t' size=12 vlen=3
          'a' type_id=2 bits_offset=0
          'b' type_id=2 bits_offset=32
          'c' type_id=2 bits_offset=64
  [9] TAG 'tag1' type_id=8 component_id=-1
  [10] TAG 'tag2' type_id=8 component_id=-1
  [11] TAG 'tag1' type_id=8 component_id=1
  [12] TAG 'tag2' type_id=8 component_id=1
  ...
  [21] FUNC_PROTO '(anon)' ret_type_id=2 vlen=1
          'x' type_id=2
  [22] FUNC 'foo' type_id=21 linkage=static
  [23] TAG 'tag1' type_id=22 component_id=0
  [24] TAG 'tag2' type_id=22 component_id=0
  [25] TAG 'tag1' type_id=22 component_id=-1
  [26] TAG 'tag2' type_id=22 component_id=-1
  ...
  [29] VAR 'total' type_id=27, linkage=global
  [30] TAG 'tag1' type_id=29 component_id=-1
  [31] TAG 'tag2' type_id=29 component_id=-1

If an old clang compiler, which does not support btf_tag attribute,
is used, these btf_tag attributes will be silently ignored.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210914223058.248949-1-yhs@fb.com
---
 tools/testing/selftests/bpf/prog_tests/btf_tag.c | 14 +++++++++
 tools/testing/selftests/bpf/progs/tag.c          | 39 ++++++++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/btf_tag.c
 create mode 100644 tools/testing/selftests/bpf/progs/tag.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf_tag.c b/tools/testing/selftests/bpf/prog_tests/btf_tag.c
new file mode 100644
index 000000000000..f939527ede77
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/btf_tag.c
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <test_progs.h>
+#include "tag.skel.h"
+
+void test_btf_tag(void)
+{
+	struct tag *skel;
+
+	skel = tag__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "btf_tag"))
+		return;
+	tag__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/progs/tag.c b/tools/testing/selftests/bpf/progs/tag.c
new file mode 100644
index 000000000000..17f88c58a6c5
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/tag.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+#define __tag1 __attribute__((btf_tag("tag1")))
+#define __tag2 __attribute__((btf_tag("tag2")))
+
+struct key_t {
+	int a;
+	int b __tag1 __tag2;
+	int c;
+} __tag1 __tag2;
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(max_entries, 3);
+	__type(key, struct key_t);
+	__type(value, __u64);
+} hashmap1 SEC(".maps");
+
+__u32 total __tag1 __tag2 = 0;
+
+static __noinline int foo(int x __tag1 __tag2) __tag1 __tag2
+{
+	struct key_t key;
+	__u64 val = 1;
+
+	key.a = key.b = key.c = x;
+	bpf_map_update_elem(&hashmap1, &key, &val, 0);
+	return 0;
+}
+
+SEC("fentry/bpf_fentry_test1")
+int BPF_PROG(sub, int x)
+{
+	return foo(x);
+}
-- 
cgit v1.2.3


From 2d6a58996ee23f85745a8e42edaad7a2b86d1a83 Mon Sep 17 00:00:00 2001
From: Jakub Kicinski <kuba@kernel.org>
Date: Mon, 13 Sep 2021 15:53:32 -0700
Subject: selftests: net: test ethtool -L vs mq

Add a selftest for checking mq children are visible after ethtool -L.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../drivers/net/netdevsim/ethtool-common.sh        |  2 +-
 .../drivers/net/netdevsim/tc-mq-visibility.sh      | 77 ++++++++++++++++++++++
 2 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100755 tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh b/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
index 7ca1f030d209..922744059aaa 100644
--- a/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
+++ b/tools/testing/selftests/drivers/net/netdevsim/ethtool-common.sh
@@ -50,7 +50,7 @@ function make_netdev {
 	modprobe netdevsim
     fi
 
-    echo $NSIM_ID > /sys/bus/netdevsim/new_device
+    echo $NSIM_ID $@ > /sys/bus/netdevsim/new_device
     # get new device name
     ls /sys/bus/netdevsim/devices/netdevsim${NSIM_ID}/net/
 }
diff --git a/tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh b/tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh
new file mode 100755
index 000000000000..fd13c8cfb7a8
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
+
+source ethtool-common.sh
+
+set -o pipefail
+
+n_children() {
+    n=$(tc qdisc show dev $NDEV | grep '^qdisc' | wc -l)
+    echo $((n - 1))
+}
+
+tcq() {
+    tc qdisc $1 dev $NDEV ${@:2}
+}
+
+n_child_assert() {
+    n=$(n_children)
+    if [ $n -ne $1 ]; then
+	echo "ERROR ($root): ${@:2}, expected $1 have $n"
+	((num_errors++))
+    else
+	((num_passes++))
+    fi
+}
+
+
+for root in mq mqprio; do
+    NDEV=$(make_netdev 1 4)
+
+    opts=
+    [ $root == "mqprio" ] && opts='hw 0 num_tc 1 map 0 0 0 0  queues 1@0'
+
+    tcq add root handle 100: $root $opts
+    n_child_assert 4 'Init'
+
+    # All defaults
+
+    for n in 3 2 1 2 3 4 1 4; do
+	ethtool -L $NDEV combined $n
+	n_child_assert $n "Change queues to $n while down"
+    done
+
+    ip link set dev $NDEV up
+
+    for n in 3 2 1 2 3 4 1 4; do
+	ethtool -L $NDEV combined $n
+	n_child_assert $n "Change queues to $n while up"
+    done
+
+    # One real one
+    tcq replace parent 100:4 handle 204: pfifo_fast
+    n_child_assert 4 "One real queue"
+
+    ethtool -L $NDEV combined 1
+    n_child_assert 2 "One real queue, one default"
+
+    ethtool -L $NDEV combined 4
+    n_child_assert 4 "One real queue, rest default"
+
+    # Graft some
+    tcq replace parent 100:1 handle 204:
+    n_child_assert 3 "Grafted"
+
+    ethtool -L $NDEV combined 1
+    n_child_assert 1 "Grafted, one"
+
+    cleanup_nsim
+done
+
+if [ $num_errors -eq 0 ]; then
+    echo "PASSED all $((num_passes)) checks"
+    exit 0
+else
+    echo "FAILED $num_errors/$((num_errors+num_passes)) checks"
+    exit 1
+fi
-- 
cgit v1.2.3


From 2220ecf55c1b7aa36e99b00a6b964f4e5333f9bf Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Tue, 14 Sep 2021 23:10:36 -0700
Subject: selftests/bpf: Skip btf_tag test if btf_tag attribute not supported

Commit c240ba287890 ("selftests/bpf: Add a test with a bpf
program with btf_tag attributes") added btf_tag selftest
to test BTF_KIND_TAG generation from C source code, and to
test kernel validation of generated BTF types.
But if an old clang (clang 13 or earlier) is used, the
following compiler warning may be seen:
  progs/tag.c:23:20: warning: unknown attribute 'btf_tag' ignored
and the test itself is marked OK. The compiler warning is bad
and the test itself shouldn't be marked OK.

This patch added the check for btf_tag attribute support.
If btf_tag is not supported by the clang, the attribute will
not be used in the code and the test will be marked as skipped.
For example, with clang 13:
  ./test_progs -t btf_tag
  #21 btf_tag:SKIP
  Summary: 1/0 PASSED, 1 SKIPPED, 0 FAILED

The selftests/README.rst is updated to clarify when the btf_tag
test may be skipped.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210915061036.2577971-1-yhs@fb.com
---
 tools/testing/selftests/bpf/README.rst           | 14 ++++++++++++++
 tools/testing/selftests/bpf/prog_tests/btf_tag.c |  6 ++++++
 tools/testing/selftests/bpf/progs/tag.c          | 12 +++++++++++-
 3 files changed, 31 insertions(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst
index 9b17f2867488..8200c0da2769 100644
--- a/tools/testing/selftests/bpf/README.rst
+++ b/tools/testing/selftests/bpf/README.rst
@@ -201,6 +201,20 @@ Without it, the error from compiling bpf selftests looks like:
 
 __ https://reviews.llvm.org/D93563
 
+btf_tag test and Clang version
+==============================
+
+The btf_tag selftest require LLVM support to recognize the btf_tag attribute.
+It was introduced in `Clang 14`__.
+
+Without it, the btf_tag selftest will be skipped and you will observe:
+
+.. code-block:: console
+
+  #<test_num> btf_tag:SKIP
+
+__ https://reviews.llvm.org/D106614
+
 Clang dependencies for static linking tests
 ===========================================
 
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_tag.c b/tools/testing/selftests/bpf/prog_tests/btf_tag.c
index f939527ede77..91821f42714d 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_tag.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_tag.c
@@ -10,5 +10,11 @@ void test_btf_tag(void)
 	skel = tag__open_and_load();
 	if (!ASSERT_OK_PTR(skel, "btf_tag"))
 		return;
+
+	if (skel->rodata->skip_tests) {
+		printf("%s:SKIP: btf_tag attribute not supported", __func__);
+		test__skip();
+	}
+
 	tag__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/progs/tag.c b/tools/testing/selftests/bpf/progs/tag.c
index 17f88c58a6c5..b46b1bfac7da 100644
--- a/tools/testing/selftests/bpf/progs/tag.c
+++ b/tools/testing/selftests/bpf/progs/tag.c
@@ -4,8 +4,19 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
 
+#ifndef __has_attribute
+#define __has_attribute(x) 0
+#endif
+
+#if __has_attribute(btf_tag)
 #define __tag1 __attribute__((btf_tag("tag1")))
 #define __tag2 __attribute__((btf_tag("tag2")))
+volatile const bool skip_tests __tag1 __tag2 = false;
+#else
+#define __tag1
+#define __tag2
+volatile const bool skip_tests = true;
+#endif
 
 struct key_t {
 	int a;
@@ -20,7 +31,6 @@ struct {
 	__type(value, __u64);
 } hashmap1 SEC(".maps");
 
-__u32 total __tag1 __tag2 = 0;
 
 static __noinline int foo(int x __tag1 __tag2) __tag1 __tag2
 {
-- 
cgit v1.2.3


From 23a7baaa93882c241ad3464cdeeb8ef0d1d40a12 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Wed, 15 Sep 2021 18:58:31 -0700
Subject: selftests/bpf: Stop using relaxed_core_relocs which has no effect

relaxed_core_relocs option hasn't had any effect for a while now, stop
specifying it. Next patch marks it as deprecated.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-3-andrii@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/core_reloc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
index 15d355af8d1d..763302e63a29 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
@@ -249,8 +249,7 @@ static int duration = 0;
 #define SIZE_CASE_COMMON(name)						\
 	.case_name = #name,						\
 	.bpf_obj_file = "test_core_reloc_size.o",			\
-	.btf_src_file = "btf__core_reloc_" #name ".o",			\
-	.relaxed_core_relocs = true
+	.btf_src_file = "btf__core_reloc_" #name ".o"
 
 #define SIZE_OUTPUT_DATA(type)						\
 	STRUCT_TO_CHAR_PTR(core_reloc_size_output) {			\
-- 
cgit v1.2.3


From 60aed22076b0d0ec2b7c7f9dba3ccd642520e1f3 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Wed, 15 Sep 2021 18:58:34 -0700
Subject: selftests/bpf: Switch fexit_bpf2bpf selftest to set_attach_target()
 API

Switch fexit_bpf2bpf selftest to bpf_program__set_attach_target()
instead of using bpf_object_open_opts.attach_prog_fd, which is going to
be deprecated. These changes also demonstrate the new mode of
set_attach_target() in which it allows NULL when the target is BPF
program (attach_prog_fd != 0).

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210916015836.1248906-6-andrii@kernel.org
---
 .../selftests/bpf/prog_tests/fexit_bpf2bpf.c       | 43 +++++++++++++---------
 1 file changed, 26 insertions(+), 17 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
index 73b4c76e6b86..c7c1816899bf 100644
--- a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
+++ b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
@@ -60,7 +60,7 @@ static void test_fexit_bpf2bpf_common(const char *obj_file,
 	struct bpf_object *obj = NULL, *tgt_obj;
 	__u32 retval, tgt_prog_id, info_len;
 	struct bpf_prog_info prog_info = {};
-	struct bpf_program **prog = NULL;
+	struct bpf_program **prog = NULL, *p;
 	struct bpf_link **link = NULL;
 	int err, tgt_fd, i;
 	struct btf *btf;
@@ -69,9 +69,6 @@ static void test_fexit_bpf2bpf_common(const char *obj_file,
 			    &tgt_obj, &tgt_fd);
 	if (!ASSERT_OK(err, "tgt_prog_load"))
 		return;
-	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts,
-			    .attach_prog_fd = tgt_fd,
-			   );
 
 	info_len = sizeof(prog_info);
 	err = bpf_obj_get_info_by_fd(tgt_fd, &prog_info, &info_len);
@@ -89,10 +86,15 @@ static void test_fexit_bpf2bpf_common(const char *obj_file,
 	if (!ASSERT_OK_PTR(prog, "prog_ptr"))
 		goto close_prog;
 
-	obj = bpf_object__open_file(obj_file, &opts);
+	obj = bpf_object__open_file(obj_file, NULL);
 	if (!ASSERT_OK_PTR(obj, "obj_open"))
 		goto close_prog;
 
+	bpf_object__for_each_program(p, obj) {
+		err = bpf_program__set_attach_target(p, tgt_fd, NULL);
+		ASSERT_OK(err, "set_attach_target");
+	}
+
 	err = bpf_object__load(obj);
 	if (!ASSERT_OK(err, "obj_load"))
 		goto close_prog;
@@ -270,7 +272,7 @@ static void test_fmod_ret_freplace(void)
 	struct bpf_link *freplace_link = NULL;
 	struct bpf_program *prog;
 	__u32 duration = 0;
-	int err, pkt_fd;
+	int err, pkt_fd, attach_prog_fd;
 
 	err = bpf_prog_load(tgt_name, BPF_PROG_TYPE_UNSPEC,
 			    &pkt_obj, &pkt_fd);
@@ -278,26 +280,32 @@ static void test_fmod_ret_freplace(void)
 	if (CHECK(err, "tgt_prog_load", "file %s err %d errno %d\n",
 		  tgt_name, err, errno))
 		return;
-	opts.attach_prog_fd = pkt_fd;
 
-	freplace_obj = bpf_object__open_file(freplace_name, &opts);
+	freplace_obj = bpf_object__open_file(freplace_name, NULL);
 	if (!ASSERT_OK_PTR(freplace_obj, "freplace_obj_open"))
 		goto out;
 
+	prog = bpf_program__next(NULL, freplace_obj);
+	err = bpf_program__set_attach_target(prog, pkt_fd, NULL);
+	ASSERT_OK(err, "freplace__set_attach_target");
+
 	err = bpf_object__load(freplace_obj);
 	if (CHECK(err, "freplace_obj_load", "err %d\n", err))
 		goto out;
 
-	prog = bpf_program__next(NULL, freplace_obj);
 	freplace_link = bpf_program__attach_trace(prog);
 	if (!ASSERT_OK_PTR(freplace_link, "freplace_attach_trace"))
 		goto out;
 
-	opts.attach_prog_fd = bpf_program__fd(prog);
-	fmod_obj = bpf_object__open_file(fmod_ret_name, &opts);
+	fmod_obj = bpf_object__open_file(fmod_ret_name, NULL);
 	if (!ASSERT_OK_PTR(fmod_obj, "fmod_obj_open"))
 		goto out;
 
+	attach_prog_fd = bpf_program__fd(prog);
+	prog = bpf_program__next(NULL, fmod_obj);
+	err = bpf_program__set_attach_target(prog, attach_prog_fd, NULL);
+	ASSERT_OK(err, "fmod_ret_set_attach_target");
+
 	err = bpf_object__load(fmod_obj);
 	if (CHECK(!err, "fmod_obj_load", "loading fmod_ret should fail\n"))
 		goto out;
@@ -322,14 +330,14 @@ static void test_func_sockmap_update(void)
 }
 
 static void test_obj_load_failure_common(const char *obj_file,
-					  const char *target_obj_file)
-
+					 const char *target_obj_file)
 {
 	/*
 	 * standalone test that asserts failure to load freplace prog
 	 * because of invalid return code.
 	 */
 	struct bpf_object *obj = NULL, *pkt_obj;
+	struct bpf_program *prog;
 	int err, pkt_fd;
 	__u32 duration = 0;
 
@@ -339,14 +347,15 @@ static void test_obj_load_failure_common(const char *obj_file,
 	if (CHECK(err, "tgt_prog_load", "file %s err %d errno %d\n",
 		  target_obj_file, err, errno))
 		return;
-	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts,
-			    .attach_prog_fd = pkt_fd,
-			   );
 
-	obj = bpf_object__open_file(obj_file, &opts);
+	obj = bpf_object__open_file(obj_file, NULL);
 	if (!ASSERT_OK_PTR(obj, "obj_open"))
 		goto close_prog;
 
+	prog = bpf_program__next(NULL, obj);
+	err = bpf_program__set_attach_target(prog, pkt_fd, NULL);
+	ASSERT_OK(err, "set_attach_target");
+
 	/* It should fail to load the program */
 	err = bpf_object__load(obj);
 	if (CHECK(!err, "bpf_obj_load should fail", "err %d\n", err))
-- 
cgit v1.2.3


From ca21a3e5edfd47c90141724557f9d6f5000e46f3 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Thu, 16 Sep 2021 21:33:43 -0700
Subject: selftests/bpf: Fix a few compiler warnings

With clang building selftests/bpf, I hit a few warnings like below:

  .../bpf_iter.c:592:48: warning: variable 'expected_key_c' set but not used [-Wunused-but-set-variable]
  __u32 expected_key_a = 0, expected_key_b = 0, expected_key_c = 0;
                                                ^

  .../bpf_iter.c:688:48: warning: variable 'expected_key_c' set but not used [-Wunused-but-set-variable]
  __u32 expected_key_a = 0, expected_key_b = 0, expected_key_c = 0;
                                                ^

  .../tc_redirect.c:657:6: warning: variable 'target_fd' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
  if (!ASSERT_OK_PTR(nstoken, "setns " NS_FWD))
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  .../tc_redirect.c:743:6: note: uninitialized use occurs here
  if (target_fd >= 0)
      ^~~~~~~~~

Removing unused variables and initializing the previously-uninitialized variable
to ensure these warnings are gone.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210917043343.3711917-1-yhs@fb.com
---
 tools/testing/selftests/bpf/prog_tests/bpf_iter.c    | 6 ++----
 tools/testing/selftests/bpf/prog_tests/tc_redirect.c | 2 +-
 2 files changed, 3 insertions(+), 5 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c
index 77ac24b191d4..9454331aaf85 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c
@@ -589,7 +589,7 @@ out:
 
 static void test_bpf_hash_map(void)
 {
-	__u32 expected_key_a = 0, expected_key_b = 0, expected_key_c = 0;
+	__u32 expected_key_a = 0, expected_key_b = 0;
 	DECLARE_LIBBPF_OPTS(bpf_iter_attach_opts, opts);
 	struct bpf_iter_bpf_hash_map *skel;
 	int err, i, len, map_fd, iter_fd;
@@ -638,7 +638,6 @@ static void test_bpf_hash_map(void)
 		val = i + 4;
 		expected_key_a += key.a;
 		expected_key_b += key.b;
-		expected_key_c += key.c;
 		expected_val += val;
 
 		err = bpf_map_update_elem(map_fd, &key, &val, BPF_ANY);
@@ -685,7 +684,7 @@ out:
 
 static void test_bpf_percpu_hash_map(void)
 {
-	__u32 expected_key_a = 0, expected_key_b = 0, expected_key_c = 0;
+	__u32 expected_key_a = 0, expected_key_b = 0;
 	DECLARE_LIBBPF_OPTS(bpf_iter_attach_opts, opts);
 	struct bpf_iter_bpf_percpu_hash_map *skel;
 	int err, i, j, len, map_fd, iter_fd;
@@ -722,7 +721,6 @@ static void test_bpf_percpu_hash_map(void)
 		key.c = i + 3;
 		expected_key_a += key.a;
 		expected_key_b += key.b;
-		expected_key_c += key.c;
 
 		for (j = 0; j < bpf_num_possible_cpus(); j++) {
 			*(__u32 *)(val + j * 8) = i + j;
diff --git a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
index e7201ba29ccd..e87bc4466d9a 100644
--- a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
@@ -633,7 +633,7 @@ static void test_tc_redirect_peer_l3(struct netns_setup_result *setup_result)
 	struct nstoken *nstoken = NULL;
 	int err;
 	int tunnel_pid = -1;
-	int src_fd, target_fd;
+	int src_fd, target_fd = -1;
 	int ifindex;
 
 	/* Start a L3 TUN/TAP tunnel between the src and dst namespaces.
-- 
cgit v1.2.3


From 84b4c52960bdccd86d6c3c42a730fd8d0ab75427 Mon Sep 17 00:00:00 2001
From: Dave Marchevsky <davemarchevsky@fb.com>
Date: Fri, 17 Sep 2021 11:29:04 -0700
Subject: selftests/bpf: Stop using bpf_program__load

bpf_program__load is not supposed to be used directly. Replace it with
bpf_object__ APIs for the reference_tracking prog_test, which is the
last offender in bpf selftests.

Some additional complexity is added for this test, namely the use of one
bpf_object to iterate through progs, while a second bpf_object is
created and opened/closed to test actual loading of progs. This is
because the test was doing bpf_program__load then __unload to test
loading of individual progs and same semantics with
bpf_object__load/__unload result in failure to load an __unload-ed obj.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210917182911.2426606-3-davemarchevsky@fb.com
---
 .../selftests/bpf/prog_tests/reference_tracking.c  | 39 +++++++++++++++++-----
 1 file changed, 31 insertions(+), 8 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/reference_tracking.c b/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
index 4e91f4d6466c..ded2dc8ddd79 100644
--- a/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
+++ b/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
@@ -1,6 +1,21 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <test_progs.h>
 
+static void toggle_object_autoload_progs(const struct bpf_object *obj,
+					 const char *title_load)
+{
+	struct bpf_program *prog;
+
+	bpf_object__for_each_program(prog, obj) {
+		const char *title = bpf_program__section_name(prog);
+
+		if (!strcmp(title_load, title))
+			bpf_program__set_autoload(prog, true);
+		else
+			bpf_program__set_autoload(prog, false);
+	}
+}
+
 void test_reference_tracking(void)
 {
 	const char *file = "test_sk_lookup_kern.o";
@@ -9,21 +24,21 @@ void test_reference_tracking(void)
 		.object_name = obj_name,
 		.relaxed_maps = true,
 	);
-	struct bpf_object *obj;
+	struct bpf_object *obj_iter, *obj = NULL;
 	struct bpf_program *prog;
 	__u32 duration = 0;
 	int err = 0;
 
-	obj = bpf_object__open_file(file, &open_opts);
-	if (!ASSERT_OK_PTR(obj, "obj_open_file"))
+	obj_iter = bpf_object__open_file(file, &open_opts);
+	if (!ASSERT_OK_PTR(obj_iter, "obj_iter_open_file"))
 		return;
 
-	if (CHECK(strcmp(bpf_object__name(obj), obj_name), "obj_name",
+	if (CHECK(strcmp(bpf_object__name(obj_iter), obj_name), "obj_name",
 		  "wrong obj name '%s', expected '%s'\n",
-		  bpf_object__name(obj), obj_name))
+		  bpf_object__name(obj_iter), obj_name))
 		goto cleanup;
 
-	bpf_object__for_each_program(prog, obj) {
+	bpf_object__for_each_program(prog, obj_iter) {
 		const char *title;
 
 		/* Ignore .text sections */
@@ -34,19 +49,27 @@ void test_reference_tracking(void)
 		if (!test__start_subtest(title))
 			continue;
 
+		obj = bpf_object__open_file(file, &open_opts);
+		if (!ASSERT_OK_PTR(obj, "obj_open_file"))
+			goto cleanup;
+
+		toggle_object_autoload_progs(obj, title);
 		/* Expect verifier failure if test name has 'err' */
 		if (strstr(title, "err_") != NULL) {
 			libbpf_print_fn_t old_print_fn;
 
 			old_print_fn = libbpf_set_print(NULL);
-			err = !bpf_program__load(prog, "GPL", 0);
+			err = !bpf_object__load(obj);
 			libbpf_set_print(old_print_fn);
 		} else {
-			err = bpf_program__load(prog, "GPL", 0);
+			err = bpf_object__load(obj);
 		}
 		CHECK(err, title, "\n");
+		bpf_object__close(obj);
+		obj = NULL;
 	}
 
 cleanup:
 	bpf_object__close(obj);
+	bpf_object__close(obj_iter);
 }
-- 
cgit v1.2.3


From 4190c299a49f323232221e73fe1846c53e3fc3f1 Mon Sep 17 00:00:00 2001
From: Dave Marchevsky <davemarchevsky@fb.com>
Date: Fri, 17 Sep 2021 11:29:08 -0700
Subject: bpftool: Only probe trace_vprintk feature in 'full' mode

Since commit 368cb0e7cdb5e ("bpftool: Make probes which emit dmesg
warnings optional"), some helpers aren't probed by bpftool unless
`full` arg is added to `bpftool feature probe`.

bpf_trace_vprintk can emit dmesg warnings when probed, so include it.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210917182911.2426606-7-davemarchevsky@fb.com
---
 tools/bpf/bpftool/feature.c                 |  1 +
 tools/testing/selftests/bpf/test_bpftool.py | 22 +++++++++-------------
 2 files changed, 10 insertions(+), 13 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c
index 7f36385aa9e2..ade44577688e 100644
--- a/tools/bpf/bpftool/feature.c
+++ b/tools/bpf/bpftool/feature.c
@@ -624,6 +624,7 @@ probe_helpers_for_progtype(enum bpf_prog_type prog_type, bool supported_type,
 		 */
 		switch (id) {
 		case BPF_FUNC_trace_printk:
+		case BPF_FUNC_trace_vprintk:
 		case BPF_FUNC_probe_write_user:
 			if (!full_mode)
 				continue;
diff --git a/tools/testing/selftests/bpf/test_bpftool.py b/tools/testing/selftests/bpf/test_bpftool.py
index 4fed2dc25c0a..1c2408ee1f5d 100644
--- a/tools/testing/selftests/bpf/test_bpftool.py
+++ b/tools/testing/selftests/bpf/test_bpftool.py
@@ -57,6 +57,11 @@ def default_iface(f):
         return f(*args, iface, **kwargs)
     return wrapper
 
+DMESG_EMITTING_HELPERS = [
+        "bpf_probe_write_user",
+        "bpf_trace_printk",
+        "bpf_trace_vprintk",
+    ]
 
 class TestBpftool(unittest.TestCase):
     @classmethod
@@ -67,10 +72,7 @@ class TestBpftool(unittest.TestCase):
 
     @default_iface
     def test_feature_dev_json(self, iface):
-        unexpected_helpers = [
-            "bpf_probe_write_user",
-            "bpf_trace_printk",
-        ]
+        unexpected_helpers = DMESG_EMITTING_HELPERS
         expected_keys = [
             "syscall_config",
             "program_types",
@@ -94,10 +96,7 @@ class TestBpftool(unittest.TestCase):
             bpftool_json(["feature", "probe"]),
             bpftool_json(["feature"]),
         ]
-        unexpected_helpers = [
-            "bpf_probe_write_user",
-            "bpf_trace_printk",
-        ]
+        unexpected_helpers = DMESG_EMITTING_HELPERS
         expected_keys = [
             "syscall_config",
             "system_config",
@@ -121,10 +120,7 @@ class TestBpftool(unittest.TestCase):
             bpftool_json(["feature", "probe", "kernel", "full"]),
             bpftool_json(["feature", "probe", "full"]),
         ]
-        expected_helpers = [
-            "bpf_probe_write_user",
-            "bpf_trace_printk",
-        ]
+        expected_helpers = DMESG_EMITTING_HELPERS
 
         for tc in test_cases:
             # Check if expected helpers are included at least once in any
@@ -157,7 +153,7 @@ class TestBpftool(unittest.TestCase):
                 not_full_set.add(helper)
 
         self.assertCountEqual(full_set - not_full_set,
-                                {"bpf_probe_write_user", "bpf_trace_printk"})
+                              set(DMESG_EMITTING_HELPERS))
         self.assertCountEqual(not_full_set - full_set, set())
 
     def test_feature_macros(self):
-- 
cgit v1.2.3


From d313d45a226fdc59739c3da05bbd065f71bae5a6 Mon Sep 17 00:00:00 2001
From: Dave Marchevsky <davemarchevsky@fb.com>
Date: Fri, 17 Sep 2021 11:29:09 -0700
Subject: selftests/bpf: Migrate prog_tests/trace_printk CHECKs to ASSERTs

Guidance for new tests is to use ASSERT macros instead of CHECK. Since
trace_vprintk test will borrow heavily from trace_printk's, migrate its
CHECKs so it remains obvious that the two are closely related.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210917182911.2426606-8-davemarchevsky@fb.com
---
 .../selftests/bpf/prog_tests/trace_printk.c        | 24 ++++++++--------------
 1 file changed, 9 insertions(+), 15 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/trace_printk.c b/tools/testing/selftests/bpf/prog_tests/trace_printk.c
index d39bc00feb45..e47835f0a674 100644
--- a/tools/testing/selftests/bpf/prog_tests/trace_printk.c
+++ b/tools/testing/selftests/bpf/prog_tests/trace_printk.c
@@ -10,7 +10,7 @@
 
 void test_trace_printk(void)
 {
-	int err, iter = 0, duration = 0, found = 0;
+	int err = 0, iter = 0, found = 0;
 	struct trace_printk__bss *bss;
 	struct trace_printk *skel;
 	char *buf = NULL;
@@ -18,25 +18,24 @@ void test_trace_printk(void)
 	size_t buflen;
 
 	skel = trace_printk__open();
-	if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
+	if (!ASSERT_OK_PTR(skel, "trace_printk__open"))
 		return;
 
-	ASSERT_EQ(skel->rodata->fmt[0], 'T', "invalid printk fmt string");
+	ASSERT_EQ(skel->rodata->fmt[0], 'T', "skel->rodata->fmt[0]");
 	skel->rodata->fmt[0] = 't';
 
 	err = trace_printk__load(skel);
-	if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err))
+	if (!ASSERT_OK(err, "trace_printk__load"))
 		goto cleanup;
 
 	bss = skel->bss;
 
 	err = trace_printk__attach(skel);
-	if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
+	if (!ASSERT_OK(err, "trace_printk__attach"))
 		goto cleanup;
 
 	fp = fopen(TRACEBUF, "r");
-	if (CHECK(fp == NULL, "could not open trace buffer",
-		  "error %d opening %s", errno, TRACEBUF))
+	if (!ASSERT_OK_PTR(fp, "fopen(TRACEBUF)"))
 		goto cleanup;
 
 	/* We do not want to wait forever if this test fails... */
@@ -46,14 +45,10 @@ void test_trace_printk(void)
 	usleep(1);
 	trace_printk__detach(skel);
 
-	if (CHECK(bss->trace_printk_ran == 0,
-		  "bpf_trace_printk never ran",
-		  "ran == %d", bss->trace_printk_ran))
+	if (!ASSERT_GT(bss->trace_printk_ran, 0, "bss->trace_printk_ran"))
 		goto cleanup;
 
-	if (CHECK(bss->trace_printk_ret <= 0,
-		  "bpf_trace_printk returned <= 0 value",
-		  "got %d", bss->trace_printk_ret))
+	if (!ASSERT_GT(bss->trace_printk_ret, 0, "bss->trace_printk_ret"))
 		goto cleanup;
 
 	/* verify our search string is in the trace buffer */
@@ -66,8 +61,7 @@ void test_trace_printk(void)
 			break;
 	}
 
-	if (CHECK(!found, "message from bpf_trace_printk not found",
-		  "no instance of %s in %s", SEARCHMSG, TRACEBUF))
+	if (!ASSERT_EQ(found, bss->trace_printk_ran, "found"))
 		goto cleanup;
 
 cleanup:
-- 
cgit v1.2.3


From 7606729fe24e163923430a5df9d50a246b22d287 Mon Sep 17 00:00:00 2001
From: Dave Marchevsky <davemarchevsky@fb.com>
Date: Fri, 17 Sep 2021 11:29:10 -0700
Subject: selftests/bpf: Add trace_vprintk test prog

This commit adds a test prog for vprintk which confirms that:
  * bpf_trace_vprintk is writing to /sys/kernel/debug/tracing/trace_pipe
  * __bpf_vprintk macro works as expected
  * >3 args are printed
  * bpf_printk w/ 0 format args compiles
  * bpf_trace_vprintk call w/ a fmt specifier but NULL fmt data fails

Approach and code are borrowed from trace_printk test.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210917182911.2426606-9-davemarchevsky@fb.com
---
 tools/testing/selftests/bpf/Makefile               |  3 +-
 .../selftests/bpf/prog_tests/trace_vprintk.c       | 68 ++++++++++++++++++++++
 tools/testing/selftests/bpf/progs/trace_vprintk.c  | 33 +++++++++++
 3 files changed, 103 insertions(+), 1 deletion(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
 create mode 100644 tools/testing/selftests/bpf/progs/trace_vprintk.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 1a4d30ff3275..326ea75ce99e 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -315,7 +315,8 @@ LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h		\
 		linked_vars.skel.h linked_maps.skel.h
 
 LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
-	test_ksyms_module.c test_ringbuf.c atomics.c trace_printk.c
+	test_ksyms_module.c test_ringbuf.c atomics.c trace_printk.c \
+	trace_vprintk.c
 SKEL_BLACKLIST += $$(LSKELS)
 
 test_static_linked.skel.h-deps := test_static_linked1.o test_static_linked2.o
diff --git a/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c b/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
new file mode 100644
index 000000000000..61a24e62e1a0
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include <test_progs.h>
+
+#include "trace_vprintk.lskel.h"
+
+#define TRACEBUF	"/sys/kernel/debug/tracing/trace_pipe"
+#define SEARCHMSG	"1,2,3,4,5,6,7,8,9,10"
+
+void test_trace_vprintk(void)
+{
+	int err = 0, iter = 0, found = 0;
+	struct trace_vprintk__bss *bss;
+	struct trace_vprintk *skel;
+	char *buf = NULL;
+	FILE *fp = NULL;
+	size_t buflen;
+
+	skel = trace_vprintk__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "trace_vprintk__open_and_load"))
+		goto cleanup;
+
+	bss = skel->bss;
+
+	err = trace_vprintk__attach(skel);
+	if (!ASSERT_OK(err, "trace_vprintk__attach"))
+		goto cleanup;
+
+	fp = fopen(TRACEBUF, "r");
+	if (!ASSERT_OK_PTR(fp, "fopen(TRACEBUF)"))
+		goto cleanup;
+
+	/* We do not want to wait forever if this test fails... */
+	fcntl(fileno(fp), F_SETFL, O_NONBLOCK);
+
+	/* wait for tracepoint to trigger */
+	usleep(1);
+	trace_vprintk__detach(skel);
+
+	if (!ASSERT_GT(bss->trace_vprintk_ran, 0, "bss->trace_vprintk_ran"))
+		goto cleanup;
+
+	if (!ASSERT_GT(bss->trace_vprintk_ret, 0, "bss->trace_vprintk_ret"))
+		goto cleanup;
+
+	/* verify our search string is in the trace buffer */
+	while (getline(&buf, &buflen, fp) >= 0 || errno == EAGAIN) {
+		if (strstr(buf, SEARCHMSG) != NULL)
+			found++;
+		if (found == bss->trace_vprintk_ran)
+			break;
+		if (++iter > 1000)
+			break;
+	}
+
+	if (!ASSERT_EQ(found, bss->trace_vprintk_ran, "found"))
+		goto cleanup;
+
+	if (!ASSERT_LT(bss->null_data_vprintk_ret, 0, "bss->null_data_vprintk_ret"))
+		goto cleanup;
+
+cleanup:
+	trace_vprintk__destroy(skel);
+	free(buf);
+	if (fp)
+		fclose(fp);
+}
diff --git a/tools/testing/selftests/bpf/progs/trace_vprintk.c b/tools/testing/selftests/bpf/progs/trace_vprintk.c
new file mode 100644
index 000000000000..d327241ba047
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/trace_vprintk.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+char _license[] SEC("license") = "GPL";
+
+int null_data_vprintk_ret = 0;
+int trace_vprintk_ret = 0;
+int trace_vprintk_ran = 0;
+
+SEC("fentry/__x64_sys_nanosleep")
+int sys_enter(void *ctx)
+{
+	static const char one[] = "1";
+	static const char three[] = "3";
+	static const char five[] = "5";
+	static const char seven[] = "7";
+	static const char nine[] = "9";
+	static const char f[] = "%pS\n";
+
+	/* runner doesn't search for \t, just ensure it compiles */
+	bpf_printk("\t");
+
+	trace_vprintk_ret = __bpf_vprintk("%s,%d,%s,%d,%s,%d,%s,%d,%s,%d %d\n",
+		one, 2, three, 4, five, 6, seven, 8, nine, 10, ++trace_vprintk_ran);
+
+	/* non-NULL fmt w/ NULL data should result in error */
+	null_data_vprintk_ret = bpf_trace_vprintk(f, sizeof(f), NULL, 0);
+	return 0;
+}
-- 
cgit v1.2.3


From ce9979129a0ba700112151a83a6d4cf09c7a1158 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Fri, 17 Sep 2021 16:33:22 -0700
Subject: selftests: mptcp: add mptcp getsockopt test cases

Add a test program that retrieves the three info types:
1. mptcp meta information
2. tcp info for subflow
3. subflow endpoint addresses

For all three rudimentary checks are added.

1. Meta information checks that the logical mptcp
   sequence numbers advance as expected, based on the bytes read
   (init seq + bytes_received/sent) and the connection state
   (after close, we should exect 1 extra byte due to FIN).

2. TCP info checks the number of bytes sent/received vs.
   sums of read/write syscall return values.

3. Subflow endpoint addresses are checked vs. getsockname/getpeername
   result.

Tests for forward compatibility (0-initialisation of output-only
fields in mptcp_subflow_data structure) are added as well.

Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/mptcp/.gitignore       |   1 +
 tools/testing/selftests/net/mptcp/Makefile         |   2 +-
 tools/testing/selftests/net/mptcp/mptcp_sockopt.c  | 683 +++++++++++++++++++++
 tools/testing/selftests/net/mptcp/mptcp_sockopt.sh |  31 +-
 4 files changed, 714 insertions(+), 3 deletions(-)
 create mode 100644 tools/testing/selftests/net/mptcp/mptcp_sockopt.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/mptcp/.gitignore b/tools/testing/selftests/net/mptcp/.gitignore
index 260336d5f0b1..7569d892967a 100644
--- a/tools/testing/selftests/net/mptcp/.gitignore
+++ b/tools/testing/selftests/net/mptcp/.gitignore
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 mptcp_connect
+mptcp_sockopt
 pm_nl_ctl
 *.pcap
diff --git a/tools/testing/selftests/net/mptcp/Makefile b/tools/testing/selftests/net/mptcp/Makefile
index f1464f09b080..bbf4e448bad9 100644
--- a/tools/testing/selftests/net/mptcp/Makefile
+++ b/tools/testing/selftests/net/mptcp/Makefile
@@ -8,7 +8,7 @@ CFLAGS =  -Wall -Wl,--no-as-needed -O2 -g  -I$(top_srcdir)/usr/include
 TEST_PROGS := mptcp_connect.sh pm_netlink.sh mptcp_join.sh diag.sh \
 	      simult_flows.sh mptcp_sockopt.sh
 
-TEST_GEN_FILES = mptcp_connect pm_nl_ctl
+TEST_GEN_FILES = mptcp_connect pm_nl_ctl mptcp_sockopt
 
 TEST_FILES := settings
 
diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.c b/tools/testing/selftests/net/mptcp/mptcp_sockopt.c
new file mode 100644
index 000000000000..417b11cafafe
--- /dev/null
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.c
@@ -0,0 +1,683 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#define _GNU_SOURCE
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <unistd.h>
+
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <netdb.h>
+#include <netinet/in.h>
+
+#include <linux/tcp.h>
+
+static int pf = AF_INET;
+
+#ifndef IPPROTO_MPTCP
+#define IPPROTO_MPTCP 262
+#endif
+#ifndef SOL_MPTCP
+#define SOL_MPTCP 284
+#endif
+
+#ifndef MPTCP_INFO
+struct mptcp_info {
+	__u8	mptcpi_subflows;
+	__u8	mptcpi_add_addr_signal;
+	__u8	mptcpi_add_addr_accepted;
+	__u8	mptcpi_subflows_max;
+	__u8	mptcpi_add_addr_signal_max;
+	__u8	mptcpi_add_addr_accepted_max;
+	__u32	mptcpi_flags;
+	__u32	mptcpi_token;
+	__u64	mptcpi_write_seq;
+	__u64	mptcpi_snd_una;
+	__u64	mptcpi_rcv_nxt;
+	__u8	mptcpi_local_addr_used;
+	__u8	mptcpi_local_addr_max;
+	__u8	mptcpi_csum_enabled;
+};
+
+struct mptcp_subflow_data {
+	__u32		size_subflow_data;		/* size of this structure in userspace */
+	__u32		num_subflows;			/* must be 0, set by kernel */
+	__u32		size_kernel;			/* must be 0, set by kernel */
+	__u32		size_user;			/* size of one element in data[] */
+} __attribute__((aligned(8)));
+
+struct mptcp_subflow_addrs {
+	union {
+		__kernel_sa_family_t sa_family;
+		struct sockaddr sa_local;
+		struct sockaddr_in sin_local;
+		struct sockaddr_in6 sin6_local;
+		struct __kernel_sockaddr_storage ss_local;
+	};
+	union {
+		struct sockaddr sa_remote;
+		struct sockaddr_in sin_remote;
+		struct sockaddr_in6 sin6_remote;
+		struct __kernel_sockaddr_storage ss_remote;
+	};
+};
+
+#define MPTCP_INFO		1
+#define MPTCP_TCPINFO		2
+#define MPTCP_SUBFLOW_ADDRS	3
+#endif
+
+struct so_state {
+	struct mptcp_info mi;
+	uint64_t mptcpi_rcv_delta;
+	uint64_t tcpi_rcv_delta;
+};
+
+static void die_perror(const char *msg)
+{
+	perror(msg);
+	exit(1);
+}
+
+static void die_usage(int r)
+{
+	fprintf(stderr, "Usage: mptcp_sockopt [-6]\n");
+	exit(r);
+}
+
+static void xerror(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	fputc('\n', stderr);
+	exit(1);
+}
+
+static const char *getxinfo_strerr(int err)
+{
+	if (err == EAI_SYSTEM)
+		return strerror(errno);
+
+	return gai_strerror(err);
+}
+
+static void xgetaddrinfo(const char *node, const char *service,
+			 const struct addrinfo *hints,
+			 struct addrinfo **res)
+{
+	int err = getaddrinfo(node, service, hints, res);
+
+	if (err) {
+		const char *errstr = getxinfo_strerr(err);
+
+		fprintf(stderr, "Fatal: getaddrinfo(%s:%s): %s\n",
+			node ? node : "", service ? service : "", errstr);
+		exit(1);
+	}
+}
+
+static int sock_listen_mptcp(const char * const listenaddr,
+			     const char * const port)
+{
+	int sock;
+	struct addrinfo hints = {
+		.ai_protocol = IPPROTO_TCP,
+		.ai_socktype = SOCK_STREAM,
+		.ai_flags = AI_PASSIVE | AI_NUMERICHOST
+	};
+
+	hints.ai_family = pf;
+
+	struct addrinfo *a, *addr;
+	int one = 1;
+
+	xgetaddrinfo(listenaddr, port, &hints, &addr);
+	hints.ai_family = pf;
+
+	for (a = addr; a; a = a->ai_next) {
+		sock = socket(a->ai_family, a->ai_socktype, IPPROTO_MPTCP);
+		if (sock < 0)
+			continue;
+
+		if (-1 == setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &one,
+				     sizeof(one)))
+			perror("setsockopt");
+
+		if (bind(sock, a->ai_addr, a->ai_addrlen) == 0)
+			break; /* success */
+
+		perror("bind");
+		close(sock);
+		sock = -1;
+	}
+
+	freeaddrinfo(addr);
+
+	if (sock < 0)
+		xerror("could not create listen socket");
+
+	if (listen(sock, 20))
+		die_perror("listen");
+
+	return sock;
+}
+
+static int sock_connect_mptcp(const char * const remoteaddr,
+			      const char * const port, int proto)
+{
+	struct addrinfo hints = {
+		.ai_protocol = IPPROTO_TCP,
+		.ai_socktype = SOCK_STREAM,
+	};
+	struct addrinfo *a, *addr;
+	int sock = -1;
+
+	hints.ai_family = pf;
+
+	xgetaddrinfo(remoteaddr, port, &hints, &addr);
+	for (a = addr; a; a = a->ai_next) {
+		sock = socket(a->ai_family, a->ai_socktype, proto);
+		if (sock < 0)
+			continue;
+
+		if (connect(sock, a->ai_addr, a->ai_addrlen) == 0)
+			break; /* success */
+
+		die_perror("connect");
+	}
+
+	if (sock < 0)
+		xerror("could not create connect socket");
+
+	freeaddrinfo(addr);
+	return sock;
+}
+
+static void parse_opts(int argc, char **argv)
+{
+	int c;
+
+	while ((c = getopt(argc, argv, "h6")) != -1) {
+		switch (c) {
+		case 'h':
+			die_usage(0);
+			break;
+		case '6':
+			pf = AF_INET6;
+			break;
+		default:
+			die_usage(1);
+			break;
+		}
+	}
+}
+
+static void do_getsockopt_bogus_sf_data(int fd, int optname)
+{
+	struct mptcp_subflow_data good_data;
+	struct bogus_data {
+		struct mptcp_subflow_data d;
+		char buf[2];
+	} bd;
+	socklen_t olen, _olen;
+	int ret;
+
+	memset(&bd, 0, sizeof(bd));
+	memset(&good_data, 0, sizeof(good_data));
+
+	olen = sizeof(good_data);
+	good_data.size_subflow_data = olen;
+
+	ret = getsockopt(fd, SOL_MPTCP, optname, &bd, &olen);
+	assert(ret < 0); /* 0 size_subflow_data */
+	assert(olen == sizeof(good_data));
+
+	bd.d = good_data;
+
+	ret = getsockopt(fd, SOL_MPTCP, optname, &bd, &olen);
+	assert(ret == 0);
+	assert(olen == sizeof(good_data));
+	assert(bd.d.num_subflows == 1);
+	assert(bd.d.size_kernel > 0);
+	assert(bd.d.size_user == 0);
+
+	bd.d = good_data;
+	_olen = rand() % olen;
+	olen = _olen;
+	ret = getsockopt(fd, SOL_MPTCP, optname, &bd, &olen);
+	assert(ret < 0);	/* bogus olen */
+	assert(olen == _olen);	/* must be unchanged */
+
+	bd.d = good_data;
+	olen = sizeof(good_data);
+	bd.d.size_kernel = 1;
+	ret = getsockopt(fd, SOL_MPTCP, optname, &bd, &olen);
+	assert(ret < 0); /* size_kernel not 0 */
+
+	bd.d = good_data;
+	olen = sizeof(good_data);
+	bd.d.num_subflows = 1;
+	ret = getsockopt(fd, SOL_MPTCP, optname, &bd, &olen);
+	assert(ret < 0); /* num_subflows not 0 */
+
+	/* forward compat check: larger struct mptcp_subflow_data on 'old' kernel */
+	bd.d = good_data;
+	olen = sizeof(bd);
+	bd.d.size_subflow_data = sizeof(bd);
+
+	ret = getsockopt(fd, SOL_MPTCP, optname, &bd, &olen);
+	assert(ret == 0);
+
+	/* olen must be truncated to real data size filled by kernel: */
+	assert(olen == sizeof(good_data));
+
+	assert(bd.d.size_subflow_data == sizeof(bd));
+
+	bd.d = good_data;
+	bd.d.size_subflow_data += 1;
+	bd.d.size_user = 1;
+	olen = bd.d.size_subflow_data + 1;
+	_olen = olen;
+
+	ret = getsockopt(fd, SOL_MPTCP, optname, &bd, &_olen);
+	assert(ret == 0);
+
+	/* no truncation, kernel should have filled 1 byte of optname payload in buf[1]: */
+	assert(olen == _olen);
+
+	assert(bd.d.size_subflow_data == sizeof(good_data) + 1);
+	assert(bd.buf[0] == 0);
+}
+
+static void do_getsockopt_mptcp_info(struct so_state *s, int fd, size_t w)
+{
+	struct mptcp_info i;
+	socklen_t olen;
+	int ret;
+
+	olen = sizeof(i);
+	ret = getsockopt(fd, SOL_MPTCP, MPTCP_INFO, &i, &olen);
+
+	if (ret < 0)
+		die_perror("getsockopt MPTCP_INFO");
+
+	assert(olen == sizeof(i));
+
+	if (s->mi.mptcpi_write_seq == 0)
+		s->mi = i;
+
+	assert(s->mi.mptcpi_write_seq + w == i.mptcpi_write_seq);
+
+	s->mptcpi_rcv_delta = i.mptcpi_rcv_nxt - s->mi.mptcpi_rcv_nxt;
+}
+
+static void do_getsockopt_tcp_info(struct so_state *s, int fd, size_t r, size_t w)
+{
+	struct my_tcp_info {
+		struct mptcp_subflow_data d;
+		struct tcp_info ti[2];
+	} ti;
+	int ret, tries = 5;
+	socklen_t olen;
+
+	do {
+		memset(&ti, 0, sizeof(ti));
+
+		ti.d.size_subflow_data = sizeof(struct mptcp_subflow_data);
+		ti.d.size_user = sizeof(struct tcp_info);
+		olen = sizeof(ti);
+
+		ret = getsockopt(fd, SOL_MPTCP, MPTCP_TCPINFO, &ti, &olen);
+		if (ret < 0)
+			xerror("getsockopt MPTCP_TCPINFO (tries %d, %m)");
+
+		assert(olen <= sizeof(ti));
+		assert(ti.d.size_user == ti.d.size_kernel);
+		assert(ti.d.size_user == sizeof(struct tcp_info));
+		assert(ti.d.num_subflows == 1);
+
+		assert(olen > (socklen_t)sizeof(struct mptcp_subflow_data));
+		olen -= sizeof(struct mptcp_subflow_data);
+		assert(olen == sizeof(struct tcp_info));
+
+		if (ti.ti[0].tcpi_bytes_sent == w &&
+		    ti.ti[0].tcpi_bytes_received == r)
+			goto done;
+
+		if (r == 0 && ti.ti[0].tcpi_bytes_sent == w &&
+		    ti.ti[0].tcpi_bytes_received) {
+			s->tcpi_rcv_delta = ti.ti[0].tcpi_bytes_received;
+			goto done;
+		}
+
+		/* wait and repeat, might be that tx is still ongoing */
+		sleep(1);
+	} while (tries-- > 0);
+
+	xerror("tcpi_bytes_sent %" PRIu64 ", want %zu. tcpi_bytes_received %" PRIu64 ", want %zu",
+		ti.ti[0].tcpi_bytes_sent, w, ti.ti[0].tcpi_bytes_received, r);
+
+done:
+	do_getsockopt_bogus_sf_data(fd, MPTCP_TCPINFO);
+}
+
+static void do_getsockopt_subflow_addrs(int fd)
+{
+	struct sockaddr_storage remote, local;
+	socklen_t olen, rlen, llen;
+	int ret;
+	struct my_addrs {
+		struct mptcp_subflow_data d;
+		struct mptcp_subflow_addrs addr[2];
+	} addrs;
+
+	memset(&addrs, 0, sizeof(addrs));
+	memset(&local, 0, sizeof(local));
+	memset(&remote, 0, sizeof(remote));
+
+	addrs.d.size_subflow_data = sizeof(struct mptcp_subflow_data);
+	addrs.d.size_user = sizeof(struct mptcp_subflow_addrs);
+	olen = sizeof(addrs);
+
+	ret = getsockopt(fd, SOL_MPTCP, MPTCP_SUBFLOW_ADDRS, &addrs, &olen);
+	if (ret < 0)
+		die_perror("getsockopt MPTCP_SUBFLOW_ADDRS");
+
+	assert(olen <= sizeof(addrs));
+	assert(addrs.d.size_user == addrs.d.size_kernel);
+	assert(addrs.d.size_user == sizeof(struct mptcp_subflow_addrs));
+	assert(addrs.d.num_subflows == 1);
+
+	assert(olen > (socklen_t)sizeof(struct mptcp_subflow_data));
+	olen -= sizeof(struct mptcp_subflow_data);
+	assert(olen == sizeof(struct mptcp_subflow_addrs));
+
+	llen = sizeof(local);
+	ret = getsockname(fd, (struct sockaddr *)&local, &llen);
+	if (ret < 0)
+		die_perror("getsockname");
+	rlen = sizeof(remote);
+	ret = getpeername(fd, (struct sockaddr *)&remote, &rlen);
+	if (ret < 0)
+		die_perror("getpeername");
+
+	assert(rlen > 0);
+	assert(rlen == llen);
+
+	assert(remote.ss_family == local.ss_family);
+
+	assert(memcmp(&local, &addrs.addr[0].ss_local, sizeof(local)) == 0);
+	assert(memcmp(&remote, &addrs.addr[0].ss_remote, sizeof(remote)) == 0);
+
+	memset(&addrs, 0, sizeof(addrs));
+
+	addrs.d.size_subflow_data = sizeof(struct mptcp_subflow_data);
+	addrs.d.size_user = sizeof(sa_family_t);
+	olen = sizeof(addrs.d) + sizeof(sa_family_t);
+
+	ret = getsockopt(fd, SOL_MPTCP, MPTCP_SUBFLOW_ADDRS, &addrs, &olen);
+	assert(ret == 0);
+	assert(olen == sizeof(addrs.d) + sizeof(sa_family_t));
+
+	assert(addrs.addr[0].sa_family == pf);
+	assert(addrs.addr[0].sa_family == local.ss_family);
+
+	assert(memcmp(&local, &addrs.addr[0].ss_local, sizeof(local)) != 0);
+	assert(memcmp(&remote, &addrs.addr[0].ss_remote, sizeof(remote)) != 0);
+
+	do_getsockopt_bogus_sf_data(fd, MPTCP_SUBFLOW_ADDRS);
+}
+
+static void do_getsockopts(struct so_state *s, int fd, size_t r, size_t w)
+{
+	do_getsockopt_mptcp_info(s, fd, w);
+
+	do_getsockopt_tcp_info(s, fd, r, w);
+
+	do_getsockopt_subflow_addrs(fd);
+}
+
+static void connect_one_server(int fd, int pipefd)
+{
+	char buf[4096], buf2[4096];
+	size_t len, i, total;
+	struct so_state s;
+	bool eof = false;
+	ssize_t ret;
+
+	memset(&s, 0, sizeof(s));
+
+	len = rand() % (sizeof(buf) - 1);
+
+	if (len < 128)
+		len = 128;
+
+	for (i = 0; i < len ; i++) {
+		buf[i] = rand() % 26;
+		buf[i] += 'A';
+	}
+
+	buf[i] = '\n';
+
+	do_getsockopts(&s, fd, 0, 0);
+
+	/* un-block server */
+	ret = read(pipefd, buf2, 4);
+	assert(ret == 4);
+	close(pipefd);
+
+	assert(strncmp(buf2, "xmit", 4) == 0);
+
+	ret = write(fd, buf, len);
+	if (ret < 0)
+		die_perror("write");
+
+	if (ret != (ssize_t)len)
+		xerror("short write");
+
+	total = 0;
+	do {
+		ret = read(fd, buf2 + total, sizeof(buf2) - total);
+		if (ret < 0)
+			die_perror("read");
+		if (ret == 0) {
+			eof = true;
+			break;
+		}
+
+		total += ret;
+	} while (total < len);
+
+	if (total != len)
+		xerror("total %lu, len %lu eof %d\n", total, len, eof);
+
+	if (memcmp(buf, buf2, len))
+		xerror("data corruption");
+
+	if (s.tcpi_rcv_delta)
+		assert(s.tcpi_rcv_delta <= total);
+
+	do_getsockopts(&s, fd, ret, ret);
+
+	if (eof)
+		total += 1; /* sequence advances due to FIN */
+
+	assert(s.mptcpi_rcv_delta == (uint64_t)total);
+	close(fd);
+}
+
+static void process_one_client(int fd, int pipefd)
+{
+	ssize_t ret, ret2, ret3;
+	struct so_state s;
+	char buf[4096];
+
+	memset(&s, 0, sizeof(s));
+	do_getsockopts(&s, fd, 0, 0);
+
+	ret = write(pipefd, "xmit", 4);
+	assert(ret == 4);
+
+	ret = read(fd, buf, sizeof(buf));
+	if (ret < 0)
+		die_perror("read");
+
+	assert(s.mptcpi_rcv_delta <= (uint64_t)ret);
+
+	if (s.tcpi_rcv_delta)
+		assert(s.tcpi_rcv_delta == (uint64_t)ret);
+
+	ret2 = write(fd, buf, ret);
+	if (ret2 < 0)
+		die_perror("write");
+
+	/* wait for hangup */
+	ret3 = read(fd, buf, 1);
+	if (ret3 != 0)
+		xerror("expected EOF, got %lu", ret3);
+
+	do_getsockopts(&s, fd, ret, ret2);
+	if (s.mptcpi_rcv_delta != (uint64_t)ret + 1)
+		xerror("mptcpi_rcv_delta %" PRIu64 ", expect %" PRIu64, s.mptcpi_rcv_delta, ret + 1, s.mptcpi_rcv_delta - ret);
+	close(fd);
+}
+
+static int xaccept(int s)
+{
+	int fd = accept(s, NULL, 0);
+
+	if (fd < 0)
+		die_perror("accept");
+
+	return fd;
+}
+
+static int server(int pipefd)
+{
+	int fd = -1, r;
+
+	switch (pf) {
+	case AF_INET:
+		fd = sock_listen_mptcp("127.0.0.1", "15432");
+		break;
+	case AF_INET6:
+		fd = sock_listen_mptcp("::1", "15432");
+		break;
+	default:
+		xerror("Unknown pf %d\n", pf);
+		break;
+	}
+
+	r = write(pipefd, "conn", 4);
+	assert(r == 4);
+
+	alarm(15);
+	r = xaccept(fd);
+
+	process_one_client(r, pipefd);
+
+	return 0;
+}
+
+static int client(int pipefd)
+{
+	int fd = -1;
+
+	alarm(15);
+
+	switch (pf) {
+	case AF_INET:
+		fd = sock_connect_mptcp("127.0.0.1", "15432", IPPROTO_MPTCP);
+		break;
+	case AF_INET6:
+		fd = sock_connect_mptcp("::1", "15432", IPPROTO_MPTCP);
+		break;
+	default:
+		xerror("Unknown pf %d\n", pf);
+	}
+
+	connect_one_server(fd, pipefd);
+
+	return 0;
+}
+
+static pid_t xfork(void)
+{
+	pid_t p = fork();
+
+	if (p < 0)
+		die_perror("fork");
+
+	return p;
+}
+
+static int rcheck(int wstatus, const char *what)
+{
+	if (WIFEXITED(wstatus)) {
+		if (WEXITSTATUS(wstatus) == 0)
+			return 0;
+		fprintf(stderr, "%s exited, status=%d\n", what, WEXITSTATUS(wstatus));
+		return WEXITSTATUS(wstatus);
+	} else if (WIFSIGNALED(wstatus)) {
+		xerror("%s killed by signal %d\n", what, WTERMSIG(wstatus));
+	} else if (WIFSTOPPED(wstatus)) {
+		xerror("%s stopped by signal %d\n", what, WSTOPSIG(wstatus));
+	}
+
+	return 111;
+}
+
+int main(int argc, char *argv[])
+{
+	int e1, e2, wstatus;
+	pid_t s, c, ret;
+	int pipefds[2];
+
+	parse_opts(argc, argv);
+
+	e1 = pipe(pipefds);
+	if (e1 < 0)
+		die_perror("pipe");
+
+	s = xfork();
+	if (s == 0)
+		return server(pipefds[1]);
+
+	close(pipefds[1]);
+
+	/* wait until server bound a socket */
+	e1 = read(pipefds[0], &e1, 4);
+	assert(e1 == 4);
+
+	c = xfork();
+	if (c == 0)
+		return client(pipefds[0]);
+
+	close(pipefds[0]);
+
+	ret = waitpid(s, &wstatus, 0);
+	if (ret == -1)
+		die_perror("waitpid");
+	e1 = rcheck(wstatus, "server");
+	ret = waitpid(c, &wstatus, 0);
+	if (ret == -1)
+		die_perror("waitpid");
+	e2 = rcheck(wstatus, "client");
+
+	return e1 ? e1 : e2;
+}
diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
index 1579e471a5e7..41de643788b8 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
@@ -239,12 +239,35 @@ make_file()
 	echo "Created $name (size $size KB) containing data sent by $who"
 }
 
+do_mptcp_sockopt_tests()
+{
+	local lret=0
+
+	./mptcp_sockopt
+	lret=$?
+
+	if [ $lret -ne 0 ]; then
+		echo "FAIL: SOL_MPTCP getsockopt" 1>&2
+		ret=$lret
+		return
+	fi
+
+	./mptcp_sockopt -6
+	lret=$?
+
+	if [ $lret -ne 0 ]; then
+		echo "FAIL: SOL_MPTCP getsockopt (ipv6)" 1>&2
+		ret=$lret
+		return
+	fi
+}
+
 run_tests()
 {
 	listener_ns="$1"
 	connector_ns="$2"
 	connect_addr="$3"
-	lret=0
+	local lret=0
 
 	do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP ${connect_addr}
 
@@ -268,9 +291,13 @@ trap cleanup EXIT
 run_tests $ns1 $ns2 10.0.1.1
 run_tests $ns1 $ns2 dead:beef:1::1
 
-
 if [ $ret -eq 0 ];then
 	echo "PASS: all packets had packet mark set"
 fi
 
+do_mptcp_sockopt_tests
+if [ $ret -eq 0 ];then
+	echo "PASS: SOL_MPTCP getsockopt has expected information"
+fi
+
 exit $ret
-- 
cgit v1.2.3


From d3b0e3b03cf75896de7b03ad1fca2bff98c59f15 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Tue, 21 Sep 2021 14:00:34 -0700
Subject: selftests/bpf: Adopt attach_probe selftest to work on old kernels

Make sure to not use ref_ctr_off feature when running on old kernels
that don't support this feature. This allows to test libbpf's legacy
kprobe and uprobe logic on old kernels.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210921210036.1545557-3-andrii@kernel.org
---
 .../selftests/bpf/prog_tests/attach_probe.c        | 24 ++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/attach_probe.c b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
index bf307bb9e446..6c511dcd1465 100644
--- a/tools/testing/selftests/bpf/prog_tests/attach_probe.c
+++ b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
@@ -14,6 +14,20 @@ void test_attach_probe(void)
 	struct test_attach_probe* skel;
 	size_t uprobe_offset;
 	ssize_t base_addr, ref_ctr_offset;
+	bool legacy;
+
+	/* Check if new-style kprobe/uprobe API is supported.
+	 * Kernels that support new FD-based kprobe and uprobe BPF attachment
+	 * through perf_event_open() syscall expose
+	 * /sys/bus/event_source/devices/kprobe/type and
+	 * /sys/bus/event_source/devices/uprobe/type files, respectively. They
+	 * contain magic numbers that are passed as "type" field of
+	 * perf_event_attr. Lack of such file in the system indicates legacy
+	 * kernel with old-style kprobe/uprobe attach interface through
+	 * creating per-probe event through tracefs. For such cases
+	 * ref_ctr_offset feature is not supported, so we don't test it.
+	 */
+	legacy = access("/sys/bus/event_source/devices/kprobe/type", F_OK) != 0;
 
 	base_addr = get_base_addr();
 	if (CHECK(base_addr < 0, "get_base_addr",
@@ -45,10 +59,11 @@ void test_attach_probe(void)
 		goto cleanup;
 	skel->links.handle_kretprobe = kretprobe_link;
 
-	ASSERT_EQ(uprobe_ref_ctr, 0, "uprobe_ref_ctr_before");
+	if (!legacy)
+		ASSERT_EQ(uprobe_ref_ctr, 0, "uprobe_ref_ctr_before");
 
 	uprobe_opts.retprobe = false;
-	uprobe_opts.ref_ctr_offset = ref_ctr_offset;
+	uprobe_opts.ref_ctr_offset = legacy ? 0 : ref_ctr_offset;
 	uprobe_link = bpf_program__attach_uprobe_opts(skel->progs.handle_uprobe,
 						      0 /* self pid */,
 						      "/proc/self/exe",
@@ -58,11 +73,12 @@ void test_attach_probe(void)
 		goto cleanup;
 	skel->links.handle_uprobe = uprobe_link;
 
-	ASSERT_GT(uprobe_ref_ctr, 0, "uprobe_ref_ctr_after");
+	if (!legacy)
+		ASSERT_GT(uprobe_ref_ctr, 0, "uprobe_ref_ctr_after");
 
 	/* if uprobe uses ref_ctr, uretprobe has to use ref_ctr as well */
 	uprobe_opts.retprobe = true;
-	uprobe_opts.ref_ctr_offset = ref_ctr_offset;
+	uprobe_opts.ref_ctr_offset = legacy ? 0 : ref_ctr_offset;
 	uretprobe_link = bpf_program__attach_uprobe_opts(skel->progs.handle_uretprobe,
 							 -1 /* any pid */,
 							 "/proc/self/exe",
-- 
cgit v1.2.3


From 17b52c226a9a170f1611f69d12a71be05748aefd Mon Sep 17 00:00:00 2001
From: Jiri Benc <jbenc@redhat.com>
Date: Tue, 21 Sep 2021 16:59:11 +0200
Subject: seltests: bpf: test_tunnel: Use ip neigh

The 'arp' command is deprecated and is another dependency of the selftest.
Just use 'ip neigh', the test depends on iproute2 already.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/40f24b9d3f0f53b5c44471b452f9a11f4d13b7af.1632236133.git.jbenc@redhat.com
---
 tools/testing/selftests/bpf/test_tunnel.sh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_tunnel.sh b/tools/testing/selftests/bpf/test_tunnel.sh
index 1ccbe804e8e1..ca1372924023 100755
--- a/tools/testing/selftests/bpf/test_tunnel.sh
+++ b/tools/testing/selftests/bpf/test_tunnel.sh
@@ -168,14 +168,15 @@ add_vxlan_tunnel()
 	ip netns exec at_ns0 \
 		ip link set dev $DEV_NS address 52:54:00:d9:01:00 up
 	ip netns exec at_ns0 ip addr add dev $DEV_NS 10.1.1.100/24
-	ip netns exec at_ns0 arp -s 10.1.1.200 52:54:00:d9:02:00
+	ip netns exec at_ns0 \
+		ip neigh add 10.1.1.200 lladdr 52:54:00:d9:02:00 dev $DEV_NS
 	ip netns exec at_ns0 iptables -A OUTPUT -j MARK --set-mark 0x800FF
 
 	# root namespace
 	ip link add dev $DEV type $TYPE external gbp dstport 4789
 	ip link set dev $DEV address 52:54:00:d9:02:00 up
 	ip addr add dev $DEV 10.1.1.200/24
-	arp -s 10.1.1.100 52:54:00:d9:01:00
+	ip neigh add 10.1.1.100 lladdr 52:54:00:d9:01:00 dev $DEV
 }
 
 add_ip6vxlan_tunnel()
-- 
cgit v1.2.3


From 091037fb770e1771a52246f9b68dc76082178a3c Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Thu, 23 Sep 2021 19:58:56 -0700
Subject: selftests/bpf: Fix btf_dump __int128 test failure with clang build
 kernel

With clang build kernel (adding LLVM=1 to kernel and selftests/bpf build
command line), I hit the following test failure:

  $ ./test_progs -t btf_dump
  ...
  btf_dump_data:PASS:ensure expected/actual match 0 nsec
  btf_dump_data:FAIL:find type id unexpected find type id: actual -2 < expected 0
  btf_dump_data:FAIL:find type id unexpected find type id: actual -2 < expected 0
  test_btf_dump_int_data:FAIL:dump __int128 unexpected error: -2 (errno 2)
  #15/9 btf_dump/btf_dump: int_data:FAIL

Further analysis showed gcc build kernel has type "__int128" in dwarf/BTF
and it doesn't exist in clang build kernel. Code searching for kernel code
found the following:
  arch/s390/include/asm/types.h:  unsigned __int128 pair;
  crypto/ecc.c:   unsigned __int128 m = (unsigned __int128)left * right;
  include/linux/math64.h: return (u64)(((unsigned __int128)a * mul) >> shift);
  include/linux/math64.h: return (u64)(((unsigned __int128)a * mul) >> shift);
  lib/ubsan.h:typedef __int128 s_max;
  lib/ubsan.h:typedef unsigned __int128 u_max;

In my case, CONFIG_UBSAN is not enabled. Even if we only have "unsigned __int128"
in the code, somehow gcc still put "__int128" in dwarf while clang didn't.
Hence current test works fine for gcc but not for clang.

Enabling CONFIG_UBSAN is an option to provide __int128 type into dwarf
reliably for both gcc and clang, but not everybody enables CONFIG_UBSAN
in their kernel build. So the best choice is to use "unsigned __int128" type
which is available in both clang and gcc build kernels. But clang and gcc
dwarf encoded names for "unsigned __int128" are different:

  [$ ~] cat t.c
  unsigned __int128 a;
  [$ ~] gcc -g -c t.c && llvm-dwarfdump t.o | grep __int128
                  DW_AT_type      (0x00000031 "__int128 unsigned")
                  DW_AT_name      ("__int128 unsigned")
  [$ ~] clang -g -c t.c && llvm-dwarfdump t.o | grep __int128
                  DW_AT_type      (0x00000033 "unsigned __int128")
                  DW_AT_name      ("unsigned __int128")

The test change in this patch tries to test type name before
doing actual test.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Link: https://lore.kernel.org/bpf/20210924025856.2192476-1-yhs@fb.com
---
 tools/testing/selftests/bpf/prog_tests/btf_dump.c | 27 ++++++++++++++++++-----
 1 file changed, 21 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dump.c b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
index 52ccf0cf35e1..87f9df653e4e 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_dump.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
@@ -358,12 +358,27 @@ static void test_btf_dump_int_data(struct btf *btf, struct btf_dump *d,
 	TEST_BTF_DUMP_DATA_OVER(btf, d, NULL, str, int, sizeof(int)-1, "", 1);
 
 #ifdef __SIZEOF_INT128__
-	TEST_BTF_DUMP_DATA(btf, d, NULL, str, __int128, BTF_F_COMPACT,
-			   "(__int128)0xffffffffffffffff",
-			   0xffffffffffffffff);
-	ASSERT_OK(btf_dump_data(btf, d, "__int128", NULL, 0, &i, 16, str,
-				"(__int128)0xfffffffffffffffffffffffffffffffe"),
-		  "dump __int128");
+	/* gcc encode unsigned __int128 type with name "__int128 unsigned" in dwarf,
+	 * and clang encode it with name "unsigned __int128" in dwarf.
+	 * Do an availability test for either variant before doing actual test.
+	 */
+	if (btf__find_by_name(btf, "unsigned __int128") > 0) {
+		TEST_BTF_DUMP_DATA(btf, d, NULL, str, unsigned __int128, BTF_F_COMPACT,
+				   "(unsigned __int128)0xffffffffffffffff",
+				   0xffffffffffffffff);
+		ASSERT_OK(btf_dump_data(btf, d, "unsigned __int128", NULL, 0, &i, 16, str,
+					"(unsigned __int128)0xfffffffffffffffffffffffffffffffe"),
+			  "dump unsigned __int128");
+	} else if (btf__find_by_name(btf, "__int128 unsigned") > 0) {
+		TEST_BTF_DUMP_DATA(btf, d, NULL, str, __int128 unsigned, BTF_F_COMPACT,
+				   "(__int128 unsigned)0xffffffffffffffff",
+				   0xffffffffffffffff);
+		ASSERT_OK(btf_dump_data(btf, d, "__int128 unsigned", NULL, 0, &i, 16, str,
+					"(__int128 unsigned)0xfffffffffffffffffffffffffffffffe"),
+			  "dump unsigned __int128");
+	} else {
+		ASSERT_TRUE(false, "unsigned_int128_not_found");
+	}
 #endif
 }
 
-- 
cgit v1.2.3


From 54ea6079b7d5fd5c6d2b98322a892188d6a1db78 Mon Sep 17 00:00:00 2001
From: Martin KaFai Lau <kafai@fb.com>
Date: Tue, 21 Sep 2021 17:49:47 -0700
Subject: bpf: selftest: A bpf prog that has a 32bit scalar spill

It is a simplified example that can trigger a 32bit scalar spill.
The const scalar is refilled and added to a skb->data later.
Since the reg state of the 32bit scalar spill is not saved now,
adding the refilled reg to skb->data and then comparing it with
skb->data_end cannot verify the skb->data access.

With the earlier verifier patch and the llvm patch [1].  The verifier
can correctly verify the bpf prog.

Here is the snippet of the verifier log that leads to verifier conclusion
that the packet data is unsafe to read.  The log is from the kerne
without the previous verifier patch to save the <8-byte scalar spill.
67: R0=inv1 R1=inv17 R2=invP2 R3=inv1 R4=pkt(id=0,off=68,r=102,imm=0) R5=inv102 R6=pkt(id=0,off=62,r=102,imm=0) R7=pkt(id=0,off=0,r=102,imm=0) R8=pkt_end(id=0,off=0,imm=0) R9=inv17 R10=fp0
67: (63) *(u32 *)(r10 -12) = r5
68: R0=inv1 R1=inv17 R2=invP2 R3=inv1 R4=pkt(id=0,off=68,r=102,imm=0) R5=inv102 R6=pkt(id=0,off=62,r=102,imm=0) R7=pkt(id=0,off=0,r=102,imm=0) R8=pkt_end(id=0,off=0,imm=0) R9=inv17 R10=fp0 fp-16=mmmm????
...
101: R0_w=map_value_or_null(id=2,off=0,ks=16,vs=1,imm=0) R6_w=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=0,off=0,r=102,imm=0) R8=pkt_end(id=0,off=0,imm=0) R9=inv17 R10=fp0 fp-16=mmmmmmmm
101: (61) r1 = *(u32 *)(r10 -12)
102: R0_w=map_value_or_null(id=2,off=0,ks=16,vs=1,imm=0) R1_w=inv(id=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6_w=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=0,off=0,r=102,imm=0) R8=pkt_end(id=0,off=0,imm=0) R9=inv17 R10=fp0 fp-16=mmmmmmmm
102: (bc) w1 = w1
103: R0_w=map_value_or_null(id=2,off=0,ks=16,vs=1,imm=0) R1_w=inv(id=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6_w=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=0,off=0,r=102,imm=0) R8=pkt_end(id=0,off=0,imm=0) R9=inv17 R10=fp0 fp-16=mmmmmmmm
103: (0f) r7 += r1
last_idx 103 first_idx 67
regs=2 stack=0 before 102: (bc) w1 = w1
regs=2 stack=0 before 101: (61) r1 = *(u32 *)(r10 -12)
104: R0_w=map_value_or_null(id=2,off=0,ks=16,vs=1,imm=0) R1_w=invP(id=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6_w=pkt(id=0,off=70,r=102,imm=0) R7_w=pkt(id=3,off=0,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R8=pkt_end(id=0,off=0,imm=0) R9=inv17 R10=fp0 fp-16=mmmmmmmm
...
127: R0_w=inv1 R1=invP(id=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=3,off=0,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R8=pkt_end(id=0,off=0,imm=0) R9_w=invP17 R10=fp0 fp-16=mmmmmmmm
127: (bf) r1 = r7
128: R0_w=inv1 R1_w=pkt(id=3,off=0,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=3,off=0,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R8=pkt_end(id=0,off=0,imm=0) R9_w=invP17 R10=fp0 fp-16=mmmmmmmm
128: (07) r1 += 8
129: R0_w=inv1 R1_w=pkt(id=3,off=8,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=3,off=0,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R8=pkt_end(id=0,off=0,imm=0) R9_w=invP17 R10=fp0 fp-16=mmmmmmmm
129: (b4) w0 = 1
130: R0=inv1 R1=pkt(id=3,off=8,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=3,off=0,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R8=pkt_end(id=0,off=0,imm=0) R9=invP17 R10=fp0 fp-16=mmmmmmmm
130: (2d) if r1 > r8 goto pc-66
 R0=inv1 R1=pkt(id=3,off=8,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=3,off=0,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R8=pkt_end(id=0,off=0,imm=0) R9=invP17 R10=fp0 fp-16=mmmmmmmm
131: R0=inv1 R1=pkt(id=3,off=8,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R6=pkt(id=0,off=70,r=102,imm=0) R7=pkt(id=3,off=0,r=0,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R8=pkt_end(id=0,off=0,imm=0) R9=invP17 R10=fp0 fp-16=mmmmmmmm
131: (69) r6 = *(u16 *)(r7 +0)
invalid access to packet, off=0 size=2, R7(id=3,off=0,r=0)
R7 offset is outside of the packet

[1]: https://reviews.llvm.org/D109073

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210922004947.626286-1-kafai@fb.com
---
 tools/testing/selftests/bpf/README.rst           |  13 +
 tools/testing/selftests/bpf/prog_tests/xdpwall.c |  15 +
 tools/testing/selftests/bpf/progs/xdpwall.c      | 365 +++++++++++++++++++++++
 3 files changed, 393 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/xdpwall.c
 create mode 100644 tools/testing/selftests/bpf/progs/xdpwall.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst
index 8200c0da2769..554553acc6d9 100644
--- a/tools/testing/selftests/bpf/README.rst
+++ b/tools/testing/selftests/bpf/README.rst
@@ -242,3 +242,16 @@ To fix this issue, user newer libbpf.
 .. Links
 .. _clang reloc patch: https://reviews.llvm.org/D102712
 .. _kernel llvm reloc: /Documentation/bpf/llvm_reloc.rst
+
+Clang dependencies for the u32 spill test (xdpwall)
+===================================================
+The xdpwall selftest requires a change in `Clang 14`__.
+
+Without it, the xdpwall selftest will fail and the error message
+from running test_progs will look like:
+
+.. code-block:: console
+
+  test_xdpwall:FAIL:Does LLVM have https://reviews.llvm.org/D109073? unexpected error: -4007
+
+__ https://reviews.llvm.org/D109073
diff --git a/tools/testing/selftests/bpf/prog_tests/xdpwall.c b/tools/testing/selftests/bpf/prog_tests/xdpwall.c
new file mode 100644
index 000000000000..f3927829a55a
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/xdpwall.c
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include "test_progs.h"
+#include "xdpwall.skel.h"
+
+void test_xdpwall(void)
+{
+	struct xdpwall *skel;
+
+	skel = xdpwall__open_and_load();
+	ASSERT_OK_PTR(skel, "Does LLMV have https://reviews.llvm.org/D109073?");
+
+	xdpwall__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/progs/xdpwall.c b/tools/testing/selftests/bpf/progs/xdpwall.c
new file mode 100644
index 000000000000..7a891a0c3a39
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/xdpwall.c
@@ -0,0 +1,365 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <stdbool.h>
+#include <stdint.h>
+#include <linux/stddef.h>
+#include <linux/if_ether.h>
+#include <linux/in.h>
+#include <linux/in6.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+#include <linux/bpf.h>
+#include <linux/types.h>
+#include <bpf/bpf_endian.h>
+#include <bpf/bpf_helpers.h>
+
+enum pkt_parse_err {
+	NO_ERR,
+	BAD_IP6_HDR,
+	BAD_IP4GUE_HDR,
+	BAD_IP6GUE_HDR,
+};
+
+enum pkt_flag {
+	TUNNEL = 0x1,
+	TCP_SYN = 0x2,
+	QUIC_INITIAL_FLAG = 0x4,
+	TCP_ACK = 0x8,
+	TCP_RST = 0x10
+};
+
+struct v4_lpm_key {
+	__u32 prefixlen;
+	__u32 src;
+};
+
+struct v4_lpm_val {
+	struct v4_lpm_key key;
+	__u8 val;
+};
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(max_entries, 16);
+	__type(key, struct in6_addr);
+	__type(value, bool);
+} v6_addr_map SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(max_entries, 16);
+	__type(key, __u32);
+	__type(value, bool);
+} v4_addr_map SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_LPM_TRIE);
+	__uint(max_entries, 16);
+	__uint(key_size, sizeof(struct v4_lpm_key));
+	__uint(value_size, sizeof(struct v4_lpm_val));
+	__uint(map_flags, BPF_F_NO_PREALLOC);
+} v4_lpm_val_map SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__uint(max_entries, 16);
+	__type(key, int);
+	__type(value, __u8);
+} tcp_port_map SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__uint(max_entries, 16);
+	__type(key, int);
+	__type(value, __u16);
+} udp_port_map SEC(".maps");
+
+enum ip_type { V4 = 1, V6 = 2 };
+
+struct fw_match_info {
+	__u8 v4_src_ip_match;
+	__u8 v6_src_ip_match;
+	__u8 v4_src_prefix_match;
+	__u8 v4_dst_prefix_match;
+	__u8 tcp_dp_match;
+	__u16 udp_sp_match;
+	__u16 udp_dp_match;
+	bool is_tcp;
+	bool is_tcp_syn;
+};
+
+struct pkt_info {
+	enum ip_type type;
+	union {
+		struct iphdr *ipv4;
+		struct ipv6hdr *ipv6;
+	} ip;
+	int sport;
+	int dport;
+	__u16 trans_hdr_offset;
+	__u8 proto;
+	__u8 flags;
+};
+
+static __always_inline struct ethhdr *parse_ethhdr(void *data, void *data_end)
+{
+	struct ethhdr *eth = data;
+
+	if (eth + 1 > data_end)
+		return NULL;
+
+	return eth;
+}
+
+static __always_inline __u8 filter_ipv6_addr(const struct in6_addr *ipv6addr)
+{
+	__u8 *leaf;
+
+	leaf = bpf_map_lookup_elem(&v6_addr_map, ipv6addr);
+
+	return leaf ? *leaf : 0;
+}
+
+static __always_inline __u8 filter_ipv4_addr(const __u32 ipaddr)
+{
+	__u8 *leaf;
+
+	leaf = bpf_map_lookup_elem(&v4_addr_map, &ipaddr);
+
+	return leaf ? *leaf : 0;
+}
+
+static __always_inline __u8 filter_ipv4_lpm(const __u32 ipaddr)
+{
+	struct v4_lpm_key v4_key = {};
+	struct v4_lpm_val *lpm_val;
+
+	v4_key.src = ipaddr;
+	v4_key.prefixlen = 32;
+
+	lpm_val = bpf_map_lookup_elem(&v4_lpm_val_map, &v4_key);
+
+	return lpm_val ? lpm_val->val : 0;
+}
+
+
+static __always_inline void
+filter_src_dst_ip(struct pkt_info* info, struct fw_match_info* match_info)
+{
+	if (info->type == V6) {
+		match_info->v6_src_ip_match =
+			filter_ipv6_addr(&info->ip.ipv6->saddr);
+	} else if (info->type == V4) {
+		match_info->v4_src_ip_match =
+			filter_ipv4_addr(info->ip.ipv4->saddr);
+		match_info->v4_src_prefix_match =
+			filter_ipv4_lpm(info->ip.ipv4->saddr);
+		match_info->v4_dst_prefix_match =
+			filter_ipv4_lpm(info->ip.ipv4->daddr);
+	}
+}
+
+static __always_inline void *
+get_transport_hdr(__u16 offset, void *data, void *data_end)
+{
+	if (offset > 255 || data + offset > data_end)
+		return NULL;
+
+	return data + offset;
+}
+
+static __always_inline bool tcphdr_only_contains_flag(struct tcphdr *tcp,
+						      __u32 FLAG)
+{
+	return (tcp_flag_word(tcp) &
+		(TCP_FLAG_ACK | TCP_FLAG_RST | TCP_FLAG_SYN | TCP_FLAG_FIN)) == FLAG;
+}
+
+static __always_inline void set_tcp_flags(struct pkt_info *info,
+					  struct tcphdr *tcp) {
+	if (tcphdr_only_contains_flag(tcp, TCP_FLAG_SYN))
+		info->flags |= TCP_SYN;
+	else if (tcphdr_only_contains_flag(tcp, TCP_FLAG_ACK))
+		info->flags |= TCP_ACK;
+	else if (tcphdr_only_contains_flag(tcp, TCP_FLAG_RST))
+		info->flags |= TCP_RST;
+}
+
+static __always_inline bool
+parse_tcp(struct pkt_info *info, void *transport_hdr, void *data_end)
+{
+	struct tcphdr *tcp = transport_hdr;
+
+	if (tcp + 1 > data_end)
+		return false;
+
+	info->sport = bpf_ntohs(tcp->source);
+	info->dport = bpf_ntohs(tcp->dest);
+	set_tcp_flags(info, tcp);
+
+	return true;
+}
+
+static __always_inline bool
+parse_udp(struct pkt_info *info, void *transport_hdr, void *data_end)
+{
+	struct udphdr *udp = transport_hdr;
+
+	if (udp + 1 > data_end)
+		return false;
+
+	info->sport = bpf_ntohs(udp->source);
+	info->dport = bpf_ntohs(udp->dest);
+
+	return true;
+}
+
+static __always_inline __u8 filter_tcp_port(int port)
+{
+	__u8 *leaf = bpf_map_lookup_elem(&tcp_port_map, &port);
+
+	return leaf ? *leaf : 0;
+}
+
+static __always_inline __u16 filter_udp_port(int port)
+{
+	__u16 *leaf = bpf_map_lookup_elem(&udp_port_map, &port);
+
+	return leaf ? *leaf : 0;
+}
+
+static __always_inline bool
+filter_transport_hdr(void *transport_hdr, void *data_end,
+		     struct pkt_info *info, struct fw_match_info *match_info)
+{
+	if (info->proto == IPPROTO_TCP) {
+		if (!parse_tcp(info, transport_hdr, data_end))
+			return false;
+
+		match_info->is_tcp = true;
+		match_info->is_tcp_syn = (info->flags & TCP_SYN) > 0;
+
+		match_info->tcp_dp_match = filter_tcp_port(info->dport);
+	} else if (info->proto == IPPROTO_UDP) {
+		if (!parse_udp(info, transport_hdr, data_end))
+			return false;
+
+		match_info->udp_dp_match = filter_udp_port(info->dport);
+		match_info->udp_sp_match = filter_udp_port(info->sport);
+	}
+
+	return true;
+}
+
+static __always_inline __u8
+parse_gue_v6(struct pkt_info *info, struct ipv6hdr *ip6h, void *data_end)
+{
+	struct udphdr *udp = (struct udphdr *)(ip6h + 1);
+	void *encap_data = udp + 1;
+
+	if (udp + 1 > data_end)
+		return BAD_IP6_HDR;
+
+	if (udp->dest != bpf_htons(6666))
+		return NO_ERR;
+
+	info->flags |= TUNNEL;
+
+	if (encap_data + 1 > data_end)
+		return BAD_IP6GUE_HDR;
+
+	if (*(__u8 *)encap_data & 0x30) {
+		struct ipv6hdr *inner_ip6h = encap_data;
+
+		if (inner_ip6h + 1 > data_end)
+			return BAD_IP6GUE_HDR;
+
+		info->type = V6;
+		info->proto = inner_ip6h->nexthdr;
+		info->ip.ipv6 = inner_ip6h;
+		info->trans_hdr_offset += sizeof(struct ipv6hdr) + sizeof(struct udphdr);
+	} else {
+		struct iphdr *inner_ip4h = encap_data;
+
+		if (inner_ip4h + 1 > data_end)
+			return BAD_IP6GUE_HDR;
+
+		info->type = V4;
+		info->proto = inner_ip4h->protocol;
+		info->ip.ipv4 = inner_ip4h;
+		info->trans_hdr_offset += sizeof(struct iphdr) + sizeof(struct udphdr);
+	}
+
+	return NO_ERR;
+}
+
+static __always_inline __u8 parse_ipv6_gue(struct pkt_info *info,
+					   void *data, void *data_end)
+{
+	struct ipv6hdr *ip6h = data + sizeof(struct ethhdr);
+
+	if (ip6h + 1 > data_end)
+		return BAD_IP6_HDR;
+
+	info->proto = ip6h->nexthdr;
+	info->ip.ipv6 = ip6h;
+	info->type = V6;
+	info->trans_hdr_offset = sizeof(struct ethhdr) + sizeof(struct ipv6hdr);
+
+	if (info->proto == IPPROTO_UDP)
+		return parse_gue_v6(info, ip6h, data_end);
+
+	return NO_ERR;
+}
+
+SEC("xdp")
+int edgewall(struct xdp_md *ctx)
+{
+	void *data_end = (void *)(long)(ctx->data_end);
+	void *data = (void *)(long)(ctx->data);
+	struct fw_match_info match_info = {};
+	struct pkt_info info = {};
+	__u8 parse_err = NO_ERR;
+	void *transport_hdr;
+	struct ethhdr *eth;
+	bool filter_res;
+	__u32 proto;
+
+	eth = parse_ethhdr(data, data_end);
+	if (!eth)
+		return XDP_DROP;
+
+	proto = eth->h_proto;
+	if (proto != bpf_htons(ETH_P_IPV6))
+		return XDP_DROP;
+
+	if (parse_ipv6_gue(&info, data, data_end))
+		return XDP_DROP;
+
+	if (info.proto == IPPROTO_ICMPV6)
+		return XDP_PASS;
+
+	if (info.proto != IPPROTO_TCP && info.proto != IPPROTO_UDP)
+		return XDP_DROP;
+
+	filter_src_dst_ip(&info, &match_info);
+
+	transport_hdr = get_transport_hdr(info.trans_hdr_offset, data,
+					  data_end);
+	if (!transport_hdr)
+		return XDP_DROP;
+
+	filter_res = filter_transport_hdr(transport_hdr, data_end,
+					  &info, &match_info);
+	if (!filter_res)
+		return XDP_DROP;
+
+	if (match_info.is_tcp && !match_info.is_tcp_syn)
+		return XDP_PASS;
+
+	return XDP_DROP;
+}
+
+char LICENSE[] SEC("license") = "GPL";
-- 
cgit v1.2.3


From ef979017b837031cbe3f2f7a4d78b00c48dc770b Mon Sep 17 00:00:00 2001
From: Martin KaFai Lau <kafai@fb.com>
Date: Tue, 21 Sep 2021 17:49:53 -0700
Subject: bpf: selftest: Add verifier tests for <8-byte scalar spill and refill

This patch adds a few verifier tests for <8-byte spill and refill.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210922004953.627183-1-kafai@fb.com
---
 tools/testing/selftests/bpf/verifier/spill_fill.c | 161 ++++++++++++++++++++++
 1 file changed, 161 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/verifier/spill_fill.c b/tools/testing/selftests/bpf/verifier/spill_fill.c
index 0b943897aaf6..c9991c3f3bd2 100644
--- a/tools/testing/selftests/bpf/verifier/spill_fill.c
+++ b/tools/testing/selftests/bpf/verifier/spill_fill.c
@@ -104,3 +104,164 @@
 	.result = ACCEPT,
 	.retval = POINTER_VALUE,
 },
+{
+	"Spill and refill a u32 const scalar.  Offset to skb->data",
+	.insns = {
+	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+		    offsetof(struct __sk_buff, data)),
+	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+		    offsetof(struct __sk_buff, data_end)),
+	/* r4 = 20 */
+	BPF_MOV32_IMM(BPF_REG_4, 20),
+	/* *(u32 *)(r10 -8) = r4 */
+	BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
+	/* r4 = *(u32 *)(r10 -8) */
+	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_10, -8),
+	/* r0 = r2 */
+	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
+	/* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=inv20 */
+	BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
+	/* if (r0 > r3) R0=pkt,off=20 R2=pkt R3=pkt_end R4=inv20 */
+	BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
+	/* r0 = *(u32 *)r2 R0=pkt,off=20,r=20 R2=pkt,r=20 R3=pkt_end R4=inv20 */
+	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+},
+{
+	"Spill a u32 const, refill from another half of the uninit u32 from the stack",
+	.insns = {
+	/* r4 = 20 */
+	BPF_MOV32_IMM(BPF_REG_4, 20),
+	/* *(u32 *)(r10 -8) = r4 */
+	BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
+	/* r4 = *(u32 *)(r10 -4) fp-8=????rrrr*/
+	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_10, -4),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = REJECT,
+	.errstr = "invalid read from stack off -4+0 size 4",
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+},
+{
+	"Spill a u32 const scalar.  Refill as u16.  Offset to skb->data",
+	.insns = {
+	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+		    offsetof(struct __sk_buff, data)),
+	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+		    offsetof(struct __sk_buff, data_end)),
+	/* r4 = 20 */
+	BPF_MOV32_IMM(BPF_REG_4, 20),
+	/* *(u32 *)(r10 -8) = r4 */
+	BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
+	/* r4 = *(u16 *)(r10 -8) */
+	BPF_LDX_MEM(BPF_H, BPF_REG_4, BPF_REG_10, -8),
+	/* r0 = r2 */
+	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
+	/* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=inv,umax=65535 */
+	BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
+	/* if (r0 > r3) R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=inv,umax=65535 */
+	BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
+	/* r0 = *(u32 *)r2 R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=inv20 */
+	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = REJECT,
+	.errstr = "invalid access to packet",
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+},
+{
+	"Spill a u32 const scalar.  Refill as u16 from fp-6.  Offset to skb->data",
+	.insns = {
+	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+		    offsetof(struct __sk_buff, data)),
+	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+		    offsetof(struct __sk_buff, data_end)),
+	/* r4 = 20 */
+	BPF_MOV32_IMM(BPF_REG_4, 20),
+	/* *(u32 *)(r10 -8) = r4 */
+	BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
+	/* r4 = *(u16 *)(r10 -6) */
+	BPF_LDX_MEM(BPF_H, BPF_REG_4, BPF_REG_10, -6),
+	/* r0 = r2 */
+	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
+	/* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=inv,umax=65535 */
+	BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
+	/* if (r0 > r3) R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=inv,umax=65535 */
+	BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
+	/* r0 = *(u32 *)r2 R0=pkt,umax=65535 R2=pkt R3=pkt_end R4=inv20 */
+	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = REJECT,
+	.errstr = "invalid access to packet",
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+},
+{
+	"Spill and refill a u32 const scalar at non 8byte aligned stack addr.  Offset to skb->data",
+	.insns = {
+	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+		    offsetof(struct __sk_buff, data)),
+	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+		    offsetof(struct __sk_buff, data_end)),
+	/* r4 = 20 */
+	BPF_MOV32_IMM(BPF_REG_4, 20),
+	/* *(u32 *)(r10 -8) = r4 */
+	BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
+	/* *(u32 *)(r10 -4) = r4 */
+	BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -4),
+	/* r4 = *(u32 *)(r10 -4),  */
+	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_10, -4),
+	/* r0 = r2 */
+	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
+	/* r0 += r4 R0=pkt R2=pkt R3=pkt_end R4=inv,umax=U32_MAX */
+	BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_4),
+	/* if (r0 > r3) R0=pkt,umax=U32_MAX R2=pkt R3=pkt_end R4=inv */
+	BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
+	/* r0 = *(u32 *)r2 R0=pkt,umax=U32_MAX R2=pkt R3=pkt_end R4=inv */
+	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_2, 0),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = REJECT,
+	.errstr = "invalid access to packet",
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+},
+{
+	"Spill and refill a umax=40 bounded scalar.  Offset to skb->data",
+	.insns = {
+	BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+		    offsetof(struct __sk_buff, data)),
+	BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+		    offsetof(struct __sk_buff, data_end)),
+	BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_1,
+		    offsetof(struct __sk_buff, tstamp)),
+	BPF_JMP_IMM(BPF_JLE, BPF_REG_4, 40, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	/* *(u32 *)(r10 -8) = r4 R4=inv,umax=40 */
+	BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_4, -8),
+	/* r4 = (*u32 *)(r10 - 8) */
+	BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_10, -8),
+	/* r2 += r4 R2=pkt R4=inv,umax=40 */
+	BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_4),
+	/* r0 = r2 R2=pkt,umax=40 R4=inv,umax=40 */
+	BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
+	/* r2 += 20 R0=pkt,umax=40 R2=pkt,umax=40 */
+	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 20),
+	/* if (r2 > r3) R0=pkt,umax=40 R2=pkt,off=20,umax=40 */
+	BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_3, 1),
+	/* r0 = *(u32 *)r0 R0=pkt,r=20,umax=40 R2=pkt,off=20,r=20,umax=40 */
+	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+	.prog_type = BPF_PROG_TYPE_SCHED_CLS,
+},
-- 
cgit v1.2.3


From b69c99463d414cc263411462d52f25205657e9af Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@nvidia.com>
Date: Fri, 24 Sep 2021 12:04:27 +0200
Subject: selftests: net: fib_nexthops: Wait before checking reported idle time

The purpose of this test is to verify that after a short activity passes,
the reported time is reasonable: not zero (which could be reported by
mistake), and not something outrageous (which would be indicative of an
issue in used units).

However, the idle time is reported in units of clock_t, or hundredths of
second. If the initial sequence of commands is very quick, it is possible
that the idle time is reported as just flat-out zero. When this test was
recently enabled in our nightly regression, we started seeing spurious
failures for exactly this reason.

Therefore buffer the delay leading up to the test with a sleep, to make
sure there is no legitimate way of reporting 0.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/fib_nexthops.sh | 1 +
 1 file changed, 1 insertion(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/fib_nexthops.sh b/tools/testing/selftests/net/fib_nexthops.sh
index 0d293391e9a4..b5a69ad191b0 100755
--- a/tools/testing/selftests/net/fib_nexthops.sh
+++ b/tools/testing/selftests/net/fib_nexthops.sh
@@ -2078,6 +2078,7 @@ basic_res()
 		"id 101 index 0 nhid 2 id 101 index 1 nhid 2 id 101 index 2 nhid 1 id 101 index 3 nhid 1"
 	log_test $? 0 "Dump all nexthop buckets in a group"
 
+	sleep 0.1
 	(( $($IP -j nexthop bucket list id 101 |
 	     jq '[.[] | select(.bucket.idle_time > 0 and
 	                       .bucket.idle_time < 2)] | length') == 4 ))
-- 
cgit v1.2.3


From 5b132056123dfe25b0a8c96d1420e9c31cb8edf8 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Wed, 22 Sep 2021 09:56:07 +0200
Subject: selftests: xsk: Fix missing initialization

Fix missing initialization of the member rx_pkt_nb in the packet
stream. This leads to some tests declaring success too early as the
test thought all packets had already been received.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922075613.12186-8-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 127bcde06c86..97591e2a69f7 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -445,6 +445,12 @@ static void test_spec_set_name(struct test_spec *test, const char *name)
 	strncpy(test->name, name, MAX_TEST_NAME_SIZE);
 }
 
+static void pkt_stream_reset(struct pkt_stream *pkt_stream)
+{
+	if (pkt_stream)
+		pkt_stream->rx_pkt_nb = 0;
+}
+
 static struct pkt *pkt_stream_get_pkt(struct pkt_stream *pkt_stream, u32 pkt_nb)
 {
 	if (pkt_nb >= pkt_stream->nb_pkts)
@@ -1032,6 +1038,7 @@ static void testapp_validate_traffic(struct test_spec *test)
 		exit_with_error(errno);
 
 	test->current_step++;
+	pkt_stream_reset(ifobj_rx->pkt_stream);
 
 	/*Spawn RX thread */
 	pthread_create(&t0, NULL, ifobj_rx->func_ptr, test);
-- 
cgit v1.2.3


From 872a1184dbf2b6ed9f435d6a37ad8007126da982 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Wed, 22 Sep 2021 09:56:08 +0200
Subject: selftests: xsk: Put the same buffer only once in the fill ring

Fix a problem where the fill ring was populated with too many
entries. If number of buffers in the umem was smaller than the fill
ring size, the code used to loop over from the beginning of the umem
and start putting the same buffers in again. This is racy indeed as a
later packet can be received overwriting an earlier one before the Rx
thread manages to validate it.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922075613.12186-9-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 97591e2a69f7..c5c68b860ae0 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -977,13 +977,18 @@ static void *worker_testapp_validate_tx(void *arg)
 
 static void xsk_populate_fill_ring(struct xsk_umem_info *umem, struct pkt_stream *pkt_stream)
 {
-	u32 idx = 0, i;
+	u32 idx = 0, i, buffers_to_fill;
 	int ret;
 
-	ret = xsk_ring_prod__reserve(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS, &idx);
-	if (ret != XSK_RING_PROD__DEFAULT_NUM_DESCS)
+	if (umem->num_frames < XSK_RING_PROD__DEFAULT_NUM_DESCS)
+		buffers_to_fill = umem->num_frames;
+	else
+		buffers_to_fill = XSK_RING_PROD__DEFAULT_NUM_DESCS;
+
+	ret = xsk_ring_prod__reserve(&umem->fq, buffers_to_fill, &idx);
+	if (ret != buffers_to_fill)
 		exit_with_error(ENOSPC);
-	for (i = 0; i < XSK_RING_PROD__DEFAULT_NUM_DESCS; i++) {
+	for (i = 0; i < buffers_to_fill; i++) {
 		u64 addr;
 
 		if (pkt_stream->use_addr_for_fill) {
@@ -993,12 +998,12 @@ static void xsk_populate_fill_ring(struct xsk_umem_info *umem, struct pkt_stream
 				break;
 			addr = pkt->addr;
 		} else {
-			addr = (i % umem->num_frames) * umem->frame_size + DEFAULT_OFFSET;
+			addr = i * umem->frame_size + DEFAULT_OFFSET;
 		}
 
 		*xsk_ring_prod__fill_addr(&umem->fq, idx++) = addr;
 	}
-	xsk_ring_prod__submit(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS);
+	xsk_ring_prod__submit(&umem->fq, buffers_to_fill);
 }
 
 static void *worker_testapp_validate_rx(void *arg)
-- 
cgit v1.2.3


From 89013b8a29281fa42e39406b8b25672cb6ce2341 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Wed, 22 Sep 2021 09:56:09 +0200
Subject: selftests: xsk: Fix socket creation retry

The socket creation retry unnecessarily registered the umem once for
every retry. No reason to do this. It wastes memory and it might lead
to too many pages being locked at some point and the failure of a
test.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922075613.12186-10-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index c5c68b860ae0..aa5660dc0699 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -919,18 +919,17 @@ static void thread_common_ops(struct test_spec *test, struct ifobject *ifobject)
 		u64 umem_sz = ifobject->umem->num_frames * ifobject->umem->frame_size;
 		u32 ctr = 0;
 		void *bufs;
+		int ret;
 
 		bufs = mmap(NULL, umem_sz, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
 		if (bufs == MAP_FAILED)
 			exit_with_error(errno);
 
-		while (ctr++ < SOCK_RECONF_CTR) {
-			int ret;
-
-			ret = xsk_configure_umem(&ifobject->umem_arr[i], bufs, umem_sz);
-			if (ret)
-				exit_with_error(-ret);
+		ret = xsk_configure_umem(&ifobject->umem_arr[i], bufs, umem_sz);
+		if (ret)
+			exit_with_error(-ret);
 
+		while (ctr++ < SOCK_RECONF_CTR) {
 			ret = xsk_configure_socket(&ifobject->xsk_arr[i], &ifobject->umem_arr[i],
 						   ifobject, i);
 			if (!ret)
-- 
cgit v1.2.3


From 1bf3649688c103f80690a7088a105924f9d5a6e4 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Wed, 22 Sep 2021 09:56:10 +0200
Subject: selftests: xsk: Introduce pacing of traffic

Introduce pacing of traffic so that the Tx thread can never send more
packets than the receiver has processed plus the number of packets it
can have in its umem. So at any point in time, the number of in flight
packets (not processed by the Rx thread) are less than or equal to the
number of packets that can be held in the Rx thread's umem.

The batch size is also increased to improve running time.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922075613.12186-11-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 29 +++++++++++++++++++++++------
 tools/testing/selftests/bpf/xdpxceiver.h |  7 ++++++-
 2 files changed, 29 insertions(+), 7 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index aa5660dc0699..597fbe206026 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -384,6 +384,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
 		ifobj->umem = &ifobj->umem_arr[0];
 		ifobj->xsk = &ifobj->xsk_arr[0];
 		ifobj->use_poll = false;
+		ifobj->pacing_on = true;
 		ifobj->pkt_stream = test->pkt_stream_default;
 
 		if (i == 0) {
@@ -724,6 +725,7 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 {
 	struct pkt *pkt = pkt_stream_get_next_rx_pkt(pkt_stream);
 	u32 idx_rx = 0, idx_fq = 0, rcvd, i;
+	u32 total = 0;
 	int ret;
 
 	while (pkt) {
@@ -772,6 +774,13 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 
 		xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
 		xsk_ring_cons__release(&xsk->rx, rcvd);
+
+		pthread_mutex_lock(&pacing_mutex);
+		pkts_in_flight -= rcvd;
+		total += rcvd;
+		if (pkts_in_flight < umem->num_frames)
+			pthread_cond_signal(&pacing_cond);
+		pthread_mutex_unlock(&pacing_mutex);
 	}
 }
 
@@ -797,10 +806,19 @@ static u32 __send_pkts(struct ifobject *ifobject, u32 pkt_nb)
 			valid_pkts++;
 	}
 
+	pthread_mutex_lock(&pacing_mutex);
+	pkts_in_flight += valid_pkts;
+	if (ifobject->pacing_on && pkts_in_flight >= ifobject->umem->num_frames - BATCH_SIZE) {
+		kick_tx(xsk);
+		pthread_cond_wait(&pacing_cond, &pacing_mutex);
+	}
+	pthread_mutex_unlock(&pacing_mutex);
+
 	xsk_ring_prod__submit(&xsk->tx, i);
 	xsk->outstanding_tx += valid_pkts;
-	complete_pkts(xsk, BATCH_SIZE);
+	complete_pkts(xsk, i);
 
+	usleep(10);
 	return i;
 }
 
@@ -819,8 +837,6 @@ static void send_pkts(struct ifobject *ifobject)
 	fds.events = POLLOUT;
 
 	while (pkt_cnt < ifobject->pkt_stream->nb_pkts) {
-		u32 sent;
-
 		if (ifobject->use_poll) {
 			int ret;
 
@@ -832,9 +848,7 @@ static void send_pkts(struct ifobject *ifobject)
 				continue;
 		}
 
-		sent = __send_pkts(ifobject, pkt_cnt);
-		pkt_cnt += sent;
-		usleep(10);
+		pkt_cnt += __send_pkts(ifobject, pkt_cnt);
 	}
 
 	wait_for_tx_completion(ifobject->xsk);
@@ -1043,6 +1057,7 @@ static void testapp_validate_traffic(struct test_spec *test)
 
 	test->current_step++;
 	pkt_stream_reset(ifobj_rx->pkt_stream);
+	pkts_in_flight = 0;
 
 	/*Spawn RX thread */
 	pthread_create(&t0, NULL, ifobj_rx->func_ptr, test);
@@ -1126,6 +1141,8 @@ static void testapp_stats(struct test_spec *test)
 	for (i = 0; i < STAT_TEST_TYPE_MAX; i++) {
 		test_spec_reset(test);
 		stat_test_type = i;
+		/* No or few packets will be received so cannot pace packets */
+		test->ifobj_tx->pacing_on = false;
 
 		switch (stat_test_type) {
 		case STAT_TEST_RX_DROPPED:
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 5ac4a5e64744..00790c976f4f 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -35,7 +35,7 @@
 #define UDP_PKT_DATA_SIZE (UDP_PKT_SIZE - sizeof(struct udphdr))
 #define USLEEP_MAX 10000
 #define SOCK_RECONF_CTR 10
-#define BATCH_SIZE 8
+#define BATCH_SIZE 64
 #define POLL_TMOUT 1000
 #define DEFAULT_PKT_CNT (4 * 1024)
 #define DEFAULT_UMEM_BUFFERS (DEFAULT_PKT_CNT / 4)
@@ -136,6 +136,7 @@ struct ifobject {
 	bool tx_on;
 	bool rx_on;
 	bool use_poll;
+	bool pacing_on;
 	u8 dst_mac[ETH_ALEN];
 	u8 src_mac[ETH_ALEN];
 };
@@ -151,5 +152,9 @@ struct test_spec {
 };
 
 pthread_barrier_t barr;
+pthread_mutex_t pacing_mutex = PTHREAD_MUTEX_INITIALIZER;
+pthread_cond_t pacing_cond = PTHREAD_COND_INITIALIZER;
+
+u32 pkts_in_flight;
 
 #endif				/* XDPXCEIVER_H */
-- 
cgit v1.2.3


From 96a40678ce5390cd8515ff32e55ad932fd1fa328 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Wed, 22 Sep 2021 09:56:11 +0200
Subject: selftests: xsk: Add single packet test

Add a test where a single packet is sent and received. This might
sound like a silly test, but since many of the interfaces in xsk are
batched, it is important to be able to validate that we did not break
something as fundamental as just receiving single packets, instead of
batches of packets at high speed.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922075613.12186-12-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 13 +++++++++++++
 tools/testing/selftests/bpf/xdpxceiver.h |  1 +
 2 files changed, 14 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 597fbe206026..3beea7531c8e 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -1217,6 +1217,15 @@ static bool testapp_unaligned(struct test_spec *test)
 	return true;
 }
 
+static void testapp_single_pkt(struct test_spec *test)
+{
+	struct pkt pkts[] = {{0x1000, PKT_SIZE, 0, true}};
+
+	pkt_stream_generate_custom(test, pkts, ARRAY_SIZE(pkts));
+	testapp_validate_traffic(test);
+	pkt_stream_restore_default(test);
+}
+
 static void testapp_invalid_desc(struct test_spec *test)
 {
 	struct pkt pkts[] = {
@@ -1298,6 +1307,10 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
 		test_spec_set_name(test, "RUN_TO_COMPLETION");
 		testapp_validate_traffic(test);
 		break;
+	case TEST_TYPE_RUN_TO_COMPLETION_SINGLE_PKT:
+		test_spec_set_name(test, "RUN_TO_COMPLETION_SINGLE_PKT");
+		testapp_single_pkt(test);
+		break;
 	case TEST_TYPE_RUN_TO_COMPLETION_2K_FRAME:
 		test_spec_set_name(test, "RUN_TO_COMPLETION_2K_FRAME_SIZE");
 		test->ifobj_tx->umem->frame_size = 2048;
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 00790c976f4f..d075192c95f8 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -55,6 +55,7 @@ enum test_mode {
 enum test_type {
 	TEST_TYPE_RUN_TO_COMPLETION,
 	TEST_TYPE_RUN_TO_COMPLETION_2K_FRAME,
+	TEST_TYPE_RUN_TO_COMPLETION_SINGLE_PKT,
 	TEST_TYPE_POLL,
 	TEST_TYPE_UNALIGNED,
 	TEST_TYPE_ALIGNED_INV_DESC,
-- 
cgit v1.2.3


From e4e9baf06a6ea6cfbf69db4c3766a0879329dda2 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Wed, 22 Sep 2021 09:56:12 +0200
Subject: selftests: xsk: Change interleaving of packets in unaligned mode

Change the interleaving of packets in unaligned mode. With the current
buffer addresses in the packet stream, the last buffer in the umem
could not be used as a large packet could potentially write over the
end of the umem. The kernel correctly threw this buffer address away
and refused to use it. This is perfectly fine for all regular packet
streams, but the ones used for unaligned mode have every other packet
being at some different offset. As we will add checks for correct
offsets in the next patch, this needs to be fixed. Just start these
page-boundary straddling buffers one page earlier so that the last
one is not on the last page of the umem, making all buffers valid.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922075613.12186-13-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 3beea7531c8e..fd620f8accfd 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -543,14 +543,14 @@ static void pkt_stream_replace(struct test_spec *test, u32 nb_pkts, u32 pkt_len)
 	test->ifobj_rx->pkt_stream = pkt_stream;
 }
 
-static void pkt_stream_replace_half(struct test_spec *test, u32 pkt_len, u32 offset)
+static void pkt_stream_replace_half(struct test_spec *test, u32 pkt_len, int offset)
 {
 	struct xsk_umem_info *umem = test->ifobj_tx->umem;
 	struct pkt_stream *pkt_stream;
 	u32 i;
 
 	pkt_stream = pkt_stream_clone(umem, test->pkt_stream_default);
-	for (i = 0; i < test->pkt_stream_default->nb_pkts; i += 2) {
+	for (i = 1; i < test->pkt_stream_default->nb_pkts; i += 2) {
 		pkt_stream->pkts[i].addr = (i % umem->num_frames) * umem->frame_size + offset;
 		pkt_stream->pkts[i].len = pkt_len;
 	}
@@ -1209,7 +1209,7 @@ static bool testapp_unaligned(struct test_spec *test)
 	test->ifobj_tx->umem->unaligned_mode = true;
 	test->ifobj_rx->umem->unaligned_mode = true;
 	/* Let half of the packets straddle a buffer boundrary */
-	pkt_stream_replace_half(test, PKT_SIZE, test->ifobj_tx->umem->frame_size - 32);
+	pkt_stream_replace_half(test, PKT_SIZE, -PKT_SIZE / 2);
 	test->ifobj_rx->pkt_stream->use_addr_for_fill = true;
 	testapp_validate_traffic(test);
 
-- 
cgit v1.2.3


From e34087fc00f4f853886952711195984abdece7a3 Mon Sep 17 00:00:00 2001
From: Magnus Karlsson <magnus.karlsson@intel.com>
Date: Wed, 22 Sep 2021 09:56:13 +0200
Subject: selftests: xsk: Add frame_headroom test

Add a test for the frame_headroom feature that can be set on the
umem. The logic added validates that all offsets in all tests and
packets are valid, not just the ones that have a specifically
configured frame_headroom.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922075613.12186-14-magnus.karlsson@gmail.com
---
 tools/testing/selftests/bpf/xdpxceiver.c | 52 ++++++++++++++++++++++++++------
 tools/testing/selftests/bpf/xdpxceiver.h |  3 +-
 2 files changed, 44 insertions(+), 11 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index fd620f8accfd..6c7cf8aadc79 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -514,8 +514,7 @@ static struct pkt_stream *pkt_stream_generate(struct xsk_umem_info *umem, u32 nb
 
 	pkt_stream->nb_pkts = nb_pkts;
 	for (i = 0; i < nb_pkts; i++) {
-		pkt_stream->pkts[i].addr = (i % umem->num_frames) * umem->frame_size +
-			DEFAULT_OFFSET;
+		pkt_stream->pkts[i].addr = (i % umem->num_frames) * umem->frame_size;
 		pkt_stream->pkts[i].len = pkt_len;
 		pkt_stream->pkts[i].payload = i;
 
@@ -642,6 +641,25 @@ static void pkt_dump(void *pkt, u32 len)
 	fprintf(stdout, "---------------------------------------\n");
 }
 
+static bool is_offset_correct(struct xsk_umem_info *umem, struct pkt_stream *pkt_stream, u64 addr,
+			      u64 pkt_stream_addr)
+{
+	u32 headroom = umem->unaligned_mode ? 0 : umem->frame_headroom;
+	u32 offset = addr % umem->frame_size, expected_offset = 0;
+
+	if (!pkt_stream->use_addr_for_fill)
+		pkt_stream_addr = 0;
+
+	expected_offset += (pkt_stream_addr + headroom + XDP_PACKET_HEADROOM) % umem->frame_size;
+
+	if (offset == expected_offset)
+		return true;
+
+	ksft_test_result_fail("ERROR: [%s] expected [%u], got [%u]\n", __func__, expected_offset,
+			      offset);
+	return false;
+}
+
 static bool is_pkt_valid(struct pkt *pkt, void *buffer, u64 addr, u32 len)
 {
 	void *data = xsk_umem__get_data(buffer, addr);
@@ -724,6 +742,7 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 			 struct pollfd *fds)
 {
 	struct pkt *pkt = pkt_stream_get_next_rx_pkt(pkt_stream);
+	struct xsk_umem_info *umem = xsk->umem;
 	u32 idx_rx = 0, idx_fq = 0, rcvd, i;
 	u32 total = 0;
 	int ret;
@@ -731,7 +750,7 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 	while (pkt) {
 		rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx);
 		if (!rcvd) {
-			if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
+			if (xsk_ring_prod__needs_wakeup(&umem->fq)) {
 				ret = poll(fds, 1, POLL_TMOUT);
 				if (ret < 0)
 					exit_with_error(-ret);
@@ -739,16 +758,16 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 			continue;
 		}
 
-		ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
+		ret = xsk_ring_prod__reserve(&umem->fq, rcvd, &idx_fq);
 		while (ret != rcvd) {
 			if (ret < 0)
 				exit_with_error(-ret);
-			if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
+			if (xsk_ring_prod__needs_wakeup(&umem->fq)) {
 				ret = poll(fds, 1, POLL_TMOUT);
 				if (ret < 0)
 					exit_with_error(-ret);
 			}
-			ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
+			ret = xsk_ring_prod__reserve(&umem->fq, rcvd, &idx_fq);
 		}
 
 		for (i = 0; i < rcvd; i++) {
@@ -765,14 +784,17 @@ static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *
 
 			orig = xsk_umem__extract_addr(addr);
 			addr = xsk_umem__add_offset_to_addr(addr);
-			if (!is_pkt_valid(pkt, xsk->umem->buffer, addr, desc->len))
+
+			if (!is_pkt_valid(pkt, umem->buffer, addr, desc->len))
+				return;
+			if (!is_offset_correct(umem, pkt_stream, addr, pkt->addr))
 				return;
 
-			*xsk_ring_prod__fill_addr(&xsk->umem->fq, idx_fq++) = orig;
+			*xsk_ring_prod__fill_addr(&umem->fq, idx_fq++) = orig;
 			pkt = pkt_stream_get_next_rx_pkt(pkt_stream);
 		}
 
-		xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
+		xsk_ring_prod__submit(&umem->fq, rcvd);
 		xsk_ring_cons__release(&xsk->rx, rcvd);
 
 		pthread_mutex_lock(&pacing_mutex);
@@ -1011,7 +1033,7 @@ static void xsk_populate_fill_ring(struct xsk_umem_info *umem, struct pkt_stream
 				break;
 			addr = pkt->addr;
 		} else {
-			addr = i * umem->frame_size + DEFAULT_OFFSET;
+			addr = i * umem->frame_size;
 		}
 
 		*xsk_ring_prod__fill_addr(&umem->fq, idx++) = addr;
@@ -1134,6 +1156,13 @@ static void testapp_bpf_res(struct test_spec *test)
 	testapp_validate_traffic(test);
 }
 
+static void testapp_headroom(struct test_spec *test)
+{
+	test_spec_set_name(test, "UMEM_HEADROOM");
+	test->ifobj_rx->umem->frame_headroom = UMEM_HEADROOM_TEST_SIZE;
+	testapp_validate_traffic(test);
+}
+
 static void testapp_stats(struct test_spec *test)
 {
 	int i;
@@ -1346,6 +1375,9 @@ static void run_pkt_test(struct test_spec *test, enum test_mode mode, enum test_
 		if (!testapp_unaligned(test))
 			return;
 		break;
+	case TEST_TYPE_HEADROOM:
+		testapp_headroom(test);
+		break;
 	default:
 		break;
 	}
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index d075192c95f8..2f705f44b748 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -41,7 +41,7 @@
 #define DEFAULT_UMEM_BUFFERS (DEFAULT_PKT_CNT / 4)
 #define UMEM_SIZE (DEFAULT_UMEM_BUFFERS * XSK_UMEM__DEFAULT_FRAME_SIZE)
 #define RX_FULL_RXQSIZE 32
-#define DEFAULT_OFFSET 256
+#define UMEM_HEADROOM_TEST_SIZE 128
 #define XSK_UMEM__INVALID_FRAME_SIZE (XSK_UMEM__DEFAULT_FRAME_SIZE + 1)
 
 #define print_verbose(x...) do { if (opt_verbose) ksft_print_msg(x); } while (0)
@@ -61,6 +61,7 @@ enum test_type {
 	TEST_TYPE_ALIGNED_INV_DESC,
 	TEST_TYPE_ALIGNED_INV_DESC_2K_FRAME,
 	TEST_TYPE_UNALIGNED_INV_DESC,
+	TEST_TYPE_HEADROOM,
 	TEST_TYPE_TEARDOWN,
 	TEST_TYPE_BIDI,
 	TEST_TYPE_STATS,
-- 
cgit v1.2.3


From 8fffa0e3451abdd84e4b4e427f7e66040eb24f43 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Tue, 28 Sep 2021 09:19:38 -0700
Subject: selftests/bpf: Normalize XDP section names in selftests

Convert almost all SEC("xdp_blah") uses to strict SEC("xdp") to comply
with strict libbpf 1.0 logic of exact section name match for XDP program
types. There is only one exception, which is only tested through
iproute2 and defines multiple XDP programs within the same BPF object.
Given iproute2 still works in non-strict libbpf mode and it doesn't have
means to specify XDP programs by its name (not section name/title),
leave that single file alone for now until iproute2 gains lookup by
function/program name.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-3-andrii@kernel.org
---
 tools/testing/selftests/bpf/progs/test_map_in_map.c               | 2 +-
 tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c | 2 +-
 tools/testing/selftests/bpf/progs/test_xdp.c                      | 2 +-
 tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c     | 2 +-
 tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_shrink.c   | 4 +---
 tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c       | 2 +-
 tools/testing/selftests/bpf/progs/test_xdp_link.c                 | 2 +-
 tools/testing/selftests/bpf/progs/test_xdp_loop.c                 | 2 +-
 tools/testing/selftests/bpf/progs/test_xdp_noinline.c             | 4 ++--
 tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c  | 4 ++--
 tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c  | 4 ++--
 tools/testing/selftests/bpf/progs/xdp_dummy.c                     | 2 +-
 tools/testing/selftests/bpf/progs/xdp_redirect_multi_kern.c       | 4 ++--
 tools/testing/selftests/bpf/progs/xdping_kern.c                   | 4 ++--
 tools/testing/selftests/bpf/test_tcp_check_syncookie.sh           | 2 +-
 tools/testing/selftests/bpf/test_xdp_redirect.sh                  | 4 ++--
 tools/testing/selftests/bpf/test_xdp_redirect_multi.sh            | 2 +-
 tools/testing/selftests/bpf/test_xdp_veth.sh                      | 4 ++--
 tools/testing/selftests/bpf/xdping.c                              | 5 ++---
 19 files changed, 27 insertions(+), 30 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/test_map_in_map.c b/tools/testing/selftests/bpf/progs/test_map_in_map.c
index 1cfeb940cf9f..5f0e0bfc151e 100644
--- a/tools/testing/selftests/bpf/progs/test_map_in_map.c
+++ b/tools/testing/selftests/bpf/progs/test_map_in_map.c
@@ -23,7 +23,7 @@ struct {
 	__uint(value_size, sizeof(__u32));
 } mim_hash SEC(".maps");
 
-SEC("xdp_mimtest")
+SEC("xdp")
 int xdp_mimtest0(struct xdp_md *ctx)
 {
 	int value = 123;
diff --git a/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c b/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c
index 47cbe2eeae43..fac7ef99f9a6 100644
--- a/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c
@@ -156,7 +156,7 @@ int check_syncookie_clsact(struct __sk_buff *skb)
 	return TC_ACT_OK;
 }
 
-SEC("xdp/check_syncookie")
+SEC("xdp")
 int check_syncookie_xdp(struct xdp_md *ctx)
 {
 	check_syncookie(ctx, (void *)(long)ctx->data,
diff --git a/tools/testing/selftests/bpf/progs/test_xdp.c b/tools/testing/selftests/bpf/progs/test_xdp.c
index 31f9bce37491..e6aa2fc6ce6b 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp.c
@@ -210,7 +210,7 @@ static __always_inline int handle_ipv6(struct xdp_md *xdp)
 	return XDP_TX;
 }
 
-SEC("xdp_tx_iptunnel")
+SEC("xdp")
 int _xdp_tx_iptunnel(struct xdp_md *xdp)
 {
 	void *data_end = (void *)(long)xdp->data_end;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c b/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c
index 3d66599eee2e..199c61b7d062 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_grow.c
@@ -2,7 +2,7 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-SEC("xdp_adjust_tail_grow")
+SEC("xdp")
 int _xdp_adjust_tail_grow(struct xdp_md *xdp)
 {
 	void *data_end = (void *)(long)xdp->data_end;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_shrink.c b/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_shrink.c
index 22065a9cfb25..b7448253d135 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_shrink.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_adjust_tail_shrink.c
@@ -9,9 +9,7 @@
 #include <linux/if_ether.h>
 #include <bpf/bpf_helpers.h>
 
-int _version SEC("version") = 1;
-
-SEC("xdp_adjust_tail_shrink")
+SEC("xdp")
 int _xdp_adjust_tail_shrink(struct xdp_md *xdp)
 {
 	void *data_end = (void *)(long)xdp->data_end;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c b/tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c
index b360ba2bd441..807bf895f42c 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_devmap_helpers.c
@@ -5,7 +5,7 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-SEC("xdp_dm_log")
+SEC("xdp")
 int xdpdm_devlog(struct xdp_md *ctx)
 {
 	char fmt[] = "devmap redirect: dev %u -> dev %u len %u\n";
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_link.c b/tools/testing/selftests/bpf/progs/test_xdp_link.c
index eb93ea95d1d8..ee7d6ac0f615 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_link.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_link.c
@@ -5,7 +5,7 @@
 
 char LICENSE[] SEC("license") = "GPL";
 
-SEC("xdp/handler")
+SEC("xdp")
 int xdp_handler(struct xdp_md *xdp)
 {
 	return 0;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_loop.c b/tools/testing/selftests/bpf/progs/test_xdp_loop.c
index fcabcda30ba3..27eb52dda92c 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_loop.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_loop.c
@@ -206,7 +206,7 @@ static __always_inline int handle_ipv6(struct xdp_md *xdp)
 	return XDP_TX;
 }
 
-SEC("xdp_tx_iptunnel")
+SEC("xdp")
 int _xdp_tx_iptunnel(struct xdp_md *xdp)
 {
 	void *data_end = (void *)(long)xdp->data_end;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c
index 3a67921f62b5..596c4e71bf3a 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c
@@ -797,7 +797,7 @@ out:
 	return XDP_DROP;
 }
 
-SEC("xdp-test-v4")
+SEC("xdp")
 int balancer_ingress_v4(struct xdp_md *ctx)
 {
 	void *data = (void *)(long)ctx->data;
@@ -816,7 +816,7 @@ int balancer_ingress_v4(struct xdp_md *ctx)
 		return XDP_DROP;
 }
 
-SEC("xdp-test-v6")
+SEC("xdp")
 int balancer_ingress_v6(struct xdp_md *ctx)
 {
 	void *data = (void *)(long)ctx->data;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c b/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c
index 59ee4f182ff8..532025057711 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_with_cpumap_helpers.c
@@ -12,13 +12,13 @@ struct {
 	__uint(max_entries, 4);
 } cpu_map SEC(".maps");
 
-SEC("xdp_redir")
+SEC("xdp")
 int xdp_redir_prog(struct xdp_md *ctx)
 {
 	return bpf_redirect_map(&cpu_map, 1, 0);
 }
 
-SEC("xdp_dummy")
+SEC("xdp")
 int xdp_dummy_prog(struct xdp_md *ctx)
 {
 	return XDP_PASS;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c b/tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c
index 0ac086497722..1e6b9c38ea6d 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_with_devmap_helpers.c
@@ -9,7 +9,7 @@ struct {
 	__uint(max_entries, 4);
 } dm_ports SEC(".maps");
 
-SEC("xdp_redir")
+SEC("xdp")
 int xdp_redir_prog(struct xdp_md *ctx)
 {
 	return bpf_redirect_map(&dm_ports, 1, 0);
@@ -18,7 +18,7 @@ int xdp_redir_prog(struct xdp_md *ctx)
 /* invalid program on DEVMAP entry;
  * SEC name means expected attach type not set
  */
-SEC("xdp_dummy")
+SEC("xdp")
 int xdp_dummy_prog(struct xdp_md *ctx)
 {
 	return XDP_PASS;
diff --git a/tools/testing/selftests/bpf/progs/xdp_dummy.c b/tools/testing/selftests/bpf/progs/xdp_dummy.c
index ea25e8881992..d988b2e0cee8 100644
--- a/tools/testing/selftests/bpf/progs/xdp_dummy.c
+++ b/tools/testing/selftests/bpf/progs/xdp_dummy.c
@@ -4,7 +4,7 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-SEC("xdp_dummy")
+SEC("xdp")
 int xdp_dummy_prog(struct xdp_md *ctx)
 {
 	return XDP_PASS;
diff --git a/tools/testing/selftests/bpf/progs/xdp_redirect_multi_kern.c b/tools/testing/selftests/bpf/progs/xdp_redirect_multi_kern.c
index 880debcbcd65..8395782b6e0a 100644
--- a/tools/testing/selftests/bpf/progs/xdp_redirect_multi_kern.c
+++ b/tools/testing/selftests/bpf/progs/xdp_redirect_multi_kern.c
@@ -34,7 +34,7 @@ struct {
 	__uint(max_entries, 128);
 } mac_map SEC(".maps");
 
-SEC("xdp_redirect_map_multi")
+SEC("xdp")
 int xdp_redirect_map_multi_prog(struct xdp_md *ctx)
 {
 	void *data_end = (void *)(long)ctx->data_end;
@@ -63,7 +63,7 @@ int xdp_redirect_map_multi_prog(struct xdp_md *ctx)
 }
 
 /* The following 2 progs are for 2nd devmap prog testing */
-SEC("xdp_redirect_map_ingress")
+SEC("xdp")
 int xdp_redirect_map_all_prog(struct xdp_md *ctx)
 {
 	return bpf_redirect_map(&map_egress, 0,
diff --git a/tools/testing/selftests/bpf/progs/xdping_kern.c b/tools/testing/selftests/bpf/progs/xdping_kern.c
index 6b9ca40bd1f4..4ad73847b8a5 100644
--- a/tools/testing/selftests/bpf/progs/xdping_kern.c
+++ b/tools/testing/selftests/bpf/progs/xdping_kern.c
@@ -86,7 +86,7 @@ static __always_inline int icmp_check(struct xdp_md *ctx, int type)
 	return XDP_TX;
 }
 
-SEC("xdpclient")
+SEC("xdp")
 int xdping_client(struct xdp_md *ctx)
 {
 	void *data_end = (void *)(long)ctx->data_end;
@@ -150,7 +150,7 @@ int xdping_client(struct xdp_md *ctx)
 	return XDP_TX;
 }
 
-SEC("xdpserver")
+SEC("xdp")
 int xdping_server(struct xdp_md *ctx)
 {
 	void *data_end = (void *)(long)ctx->data_end;
diff --git a/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh b/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh
index 9b3617d770a5..fed765157c53 100755
--- a/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh
+++ b/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh
@@ -77,7 +77,7 @@ TEST_IF=lo
 MAX_PING_TRIES=5
 BPF_PROG_OBJ="${DIR}/test_tcp_check_syncookie_kern.o"
 CLSACT_SECTION="clsact/check_syncookie"
-XDP_SECTION="xdp/check_syncookie"
+XDP_SECTION="xdp"
 BPF_PROG_ID=0
 PROG="${DIR}/test_tcp_check_syncookie_user"
 
diff --git a/tools/testing/selftests/bpf/test_xdp_redirect.sh b/tools/testing/selftests/bpf/test_xdp_redirect.sh
index c033850886f4..57c8db9972a6 100755
--- a/tools/testing/selftests/bpf/test_xdp_redirect.sh
+++ b/tools/testing/selftests/bpf/test_xdp_redirect.sh
@@ -52,8 +52,8 @@ test_xdp_redirect()
 		return 0
 	fi
 
-	ip -n ns1 link set veth11 $xdpmode obj xdp_dummy.o sec xdp_dummy &> /dev/null
-	ip -n ns2 link set veth22 $xdpmode obj xdp_dummy.o sec xdp_dummy &> /dev/null
+	ip -n ns1 link set veth11 $xdpmode obj xdp_dummy.o sec xdp &> /dev/null
+	ip -n ns2 link set veth22 $xdpmode obj xdp_dummy.o sec xdp &> /dev/null
 	ip link set dev veth1 $xdpmode obj test_xdp_redirect.o sec redirect_to_222 &> /dev/null
 	ip link set dev veth2 $xdpmode obj test_xdp_redirect.o sec redirect_to_111 &> /dev/null
 
diff --git a/tools/testing/selftests/bpf/test_xdp_redirect_multi.sh b/tools/testing/selftests/bpf/test_xdp_redirect_multi.sh
index 1538373157e3..351955c2bdfd 100755
--- a/tools/testing/selftests/bpf/test_xdp_redirect_multi.sh
+++ b/tools/testing/selftests/bpf/test_xdp_redirect_multi.sh
@@ -88,7 +88,7 @@ setup_ns()
 		# Add a neigh entry for IPv4 ping test
 		ip -n ns$i neigh add 192.0.2.253 lladdr 00:00:00:00:00:01 dev veth0
 		ip -n ns$i link set veth0 $mode obj \
-			xdp_dummy.o sec xdp_dummy &> /dev/null || \
+			xdp_dummy.o sec xdp &> /dev/null || \
 			{ test_fail "Unable to load dummy xdp" && exit 1; }
 		IFACES="$IFACES veth$i"
 		veth_mac[$i]=$(ip link show veth$i | awk '/link\/ether/ {print $2}')
diff --git a/tools/testing/selftests/bpf/test_xdp_veth.sh b/tools/testing/selftests/bpf/test_xdp_veth.sh
index 995278e684b6..a3a1eaee26ea 100755
--- a/tools/testing/selftests/bpf/test_xdp_veth.sh
+++ b/tools/testing/selftests/bpf/test_xdp_veth.sh
@@ -107,9 +107,9 @@ ip link set dev veth1 xdp pinned $BPF_DIR/progs/redirect_map_0
 ip link set dev veth2 xdp pinned $BPF_DIR/progs/redirect_map_1
 ip link set dev veth3 xdp pinned $BPF_DIR/progs/redirect_map_2
 
-ip -n ns1 link set dev veth11 xdp obj xdp_dummy.o sec xdp_dummy
+ip -n ns1 link set dev veth11 xdp obj xdp_dummy.o sec xdp
 ip -n ns2 link set dev veth22 xdp obj xdp_tx.o sec xdp
-ip -n ns3 link set dev veth33 xdp obj xdp_dummy.o sec xdp_dummy
+ip -n ns3 link set dev veth33 xdp obj xdp_dummy.o sec xdp
 
 trap cleanup EXIT
 
diff --git a/tools/testing/selftests/bpf/xdping.c b/tools/testing/selftests/bpf/xdping.c
index 842d9155d36c..79a3453dab25 100644
--- a/tools/testing/selftests/bpf/xdping.c
+++ b/tools/testing/selftests/bpf/xdping.c
@@ -178,9 +178,8 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
-	main_prog = bpf_object__find_program_by_title(obj,
-						      server ? "xdpserver" :
-							       "xdpclient");
+	main_prog = bpf_object__find_program_by_name(obj,
+						     server ? "xdping_server" : "xdping_client");
 	if (main_prog)
 		prog_fd = bpf_program__fd(main_prog);
 	if (!main_prog || prog_fd < 0) {
-- 
cgit v1.2.3


From c22bdd28257f3532092746b31856932d84ca2e2b Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Tue, 28 Sep 2021 09:19:39 -0700
Subject: selftests/bpf: Switch SEC("classifier*") usage to a strict SEC("tc")

Convert all SEC("classifier*") uses to a new and strict SEC("tc")
section name. In reference_tracking selftests switch from ambiguous
searching by program title (section name) to non-ambiguous searching by
name in some selftests, getting closer to completely removing
bpf_object__find_program_by_title().

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-4-andrii@kernel.org
---
 .../selftests/bpf/prog_tests/reference_tracking.c  | 23 ++++-----
 tools/testing/selftests/bpf/prog_tests/sk_assign.c |  2 +-
 tools/testing/selftests/bpf/prog_tests/tailcalls.c | 58 +++++++++++-----------
 .../selftests/bpf/progs/for_each_array_map_elem.c  |  2 +-
 .../selftests/bpf/progs/for_each_hash_map_elem.c   |  2 +-
 .../testing/selftests/bpf/progs/kfunc_call_test.c  |  4 +-
 .../selftests/bpf/progs/kfunc_call_test_subprog.c  |  2 +-
 tools/testing/selftests/bpf/progs/skb_pkt_end.c    |  2 +-
 tools/testing/selftests/bpf/progs/tailcall1.c      |  7 ++-
 tools/testing/selftests/bpf/progs/tailcall2.c      | 23 ++++-----
 tools/testing/selftests/bpf/progs/tailcall3.c      |  7 ++-
 tools/testing/selftests/bpf/progs/tailcall4.c      |  7 ++-
 tools/testing/selftests/bpf/progs/tailcall5.c      |  7 ++-
 tools/testing/selftests/bpf/progs/tailcall6.c      |  6 +--
 .../selftests/bpf/progs/tailcall_bpf2bpf1.c        |  7 ++-
 .../selftests/bpf/progs/tailcall_bpf2bpf2.c        |  7 ++-
 .../selftests/bpf/progs/tailcall_bpf2bpf3.c        | 11 ++--
 .../selftests/bpf/progs/tailcall_bpf2bpf4.c        | 15 +++---
 .../selftests/bpf/progs/test_btf_skc_cls_ingress.c |  2 +-
 tools/testing/selftests/bpf/progs/test_check_mtu.c | 12 ++---
 .../selftests/bpf/progs/test_cls_redirect.c        |  2 +-
 .../testing/selftests/bpf/progs/test_global_data.c |  2 +-
 .../selftests/bpf/progs/test_global_func1.c        |  2 +-
 .../selftests/bpf/progs/test_global_func3.c        |  2 +-
 .../selftests/bpf/progs/test_global_func5.c        |  2 +-
 .../selftests/bpf/progs/test_global_func6.c        |  2 +-
 .../selftests/bpf/progs/test_global_func7.c        |  2 +-
 .../testing/selftests/bpf/progs/test_pkt_access.c  |  2 +-
 .../selftests/bpf/progs/test_pkt_md_access.c       |  4 +-
 tools/testing/selftests/bpf/progs/test_sk_assign.c |  3 +-
 .../selftests/bpf/progs/test_sk_lookup_kern.c      | 37 +++++++-------
 .../testing/selftests/bpf/progs/test_skb_helpers.c |  2 +-
 .../selftests/bpf/progs/test_sockmap_update.c      |  2 +-
 tools/testing/selftests/bpf/progs/test_tc_bpf.c    |  2 +-
 tools/testing/selftests/bpf/progs/test_tc_neigh.c  |  6 +--
 .../selftests/bpf/progs/test_tc_neigh_fib.c        |  6 +--
 tools/testing/selftests/bpf/progs/test_tc_peer.c   | 10 ++--
 .../bpf/progs/test_tcp_check_syncookie_kern.c      |  2 +-
 .../selftests/bpf/test_tcp_check_syncookie.sh      |  2 +-
 39 files changed, 141 insertions(+), 157 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/reference_tracking.c b/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
index ded2dc8ddd79..873323fb18ba 100644
--- a/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
+++ b/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
@@ -2,14 +2,14 @@
 #include <test_progs.h>
 
 static void toggle_object_autoload_progs(const struct bpf_object *obj,
-					 const char *title_load)
+					 const char *name_load)
 {
 	struct bpf_program *prog;
 
 	bpf_object__for_each_program(prog, obj) {
-		const char *title = bpf_program__section_name(prog);
+		const char *name = bpf_program__name(prog);
 
-		if (!strcmp(title_load, title))
+		if (!strcmp(name_load, name))
 			bpf_program__set_autoload(prog, true);
 		else
 			bpf_program__set_autoload(prog, false);
@@ -39,23 +39,19 @@ void test_reference_tracking(void)
 		goto cleanup;
 
 	bpf_object__for_each_program(prog, obj_iter) {
-		const char *title;
+		const char *name;
 
-		/* Ignore .text sections */
-		title = bpf_program__section_name(prog);
-		if (strstr(title, ".text") != NULL)
-			continue;
-
-		if (!test__start_subtest(title))
+		name = bpf_program__name(prog);
+		if (!test__start_subtest(name))
 			continue;
 
 		obj = bpf_object__open_file(file, &open_opts);
 		if (!ASSERT_OK_PTR(obj, "obj_open_file"))
 			goto cleanup;
 
-		toggle_object_autoload_progs(obj, title);
+		toggle_object_autoload_progs(obj, name);
 		/* Expect verifier failure if test name has 'err' */
-		if (strstr(title, "err_") != NULL) {
+		if (strncmp(name, "err_", sizeof("err_") - 1) == 0) {
 			libbpf_print_fn_t old_print_fn;
 
 			old_print_fn = libbpf_set_print(NULL);
@@ -64,7 +60,8 @@ void test_reference_tracking(void)
 		} else {
 			err = bpf_object__load(obj);
 		}
-		CHECK(err, title, "\n");
+		ASSERT_OK(err, name);
+
 		bpf_object__close(obj);
 		obj = NULL;
 	}
diff --git a/tools/testing/selftests/bpf/prog_tests/sk_assign.c b/tools/testing/selftests/bpf/prog_tests/sk_assign.c
index 3a469099f30d..1d272e05188e 100644
--- a/tools/testing/selftests/bpf/prog_tests/sk_assign.c
+++ b/tools/testing/selftests/bpf/prog_tests/sk_assign.c
@@ -48,7 +48,7 @@ configure_stack(void)
 		return false;
 	sprintf(tc_cmd, "%s %s %s %s", "tc filter add dev lo ingress bpf",
 		       "direct-action object-file ./test_sk_assign.o",
-		       "section classifier/sk_assign_test",
+		       "section tc",
 		       (env.verbosity < VERBOSE_VERY) ? " 2>/dev/null" : "verbose");
 	if (CHECK(system(tc_cmd), "BPF load failed;",
 		  "run with -vv for more info\n"))
diff --git a/tools/testing/selftests/bpf/prog_tests/tailcalls.c b/tools/testing/selftests/bpf/prog_tests/tailcalls.c
index 7bf3a7a97d7b..9825f1f7bfcc 100644
--- a/tools/testing/selftests/bpf/prog_tests/tailcalls.c
+++ b/tools/testing/selftests/bpf/prog_tests/tailcalls.c
@@ -21,7 +21,7 @@ static void test_tailcall_1(void)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -38,9 +38,9 @@ static void test_tailcall_1(void)
 		goto out;
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
@@ -70,9 +70,9 @@ static void test_tailcall_1(void)
 	      err, errno, retval);
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
@@ -92,9 +92,9 @@ static void test_tailcall_1(void)
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
 		j = bpf_map__def(prog_array)->max_entries - 1 - i;
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", j);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", j);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
@@ -159,7 +159,7 @@ static void test_tailcall_2(void)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -176,9 +176,9 @@ static void test_tailcall_2(void)
 		goto out;
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
@@ -233,7 +233,7 @@ static void test_tailcall_count(const char *which)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -249,7 +249,7 @@ static void test_tailcall_count(const char *which)
 	if (CHECK_FAIL(map_fd < 0))
 		goto out;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier/0");
+	prog = bpf_object__find_program_by_name(obj, "classifier_0");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -329,7 +329,7 @@ static void test_tailcall_4(void)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -354,9 +354,9 @@ static void test_tailcall_4(void)
 		return;
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
@@ -417,7 +417,7 @@ static void test_tailcall_5(void)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -442,9 +442,9 @@ static void test_tailcall_5(void)
 		return;
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
@@ -503,7 +503,7 @@ static void test_tailcall_bpf2bpf_1(void)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -521,9 +521,9 @@ static void test_tailcall_bpf2bpf_1(void)
 
 	/* nop -> jmp */
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
@@ -587,7 +587,7 @@ static void test_tailcall_bpf2bpf_2(void)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -603,7 +603,7 @@ static void test_tailcall_bpf2bpf_2(void)
 	if (CHECK_FAIL(map_fd < 0))
 		goto out;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier/0");
+	prog = bpf_object__find_program_by_name(obj, "classifier_0");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -665,7 +665,7 @@ static void test_tailcall_bpf2bpf_3(void)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -682,9 +682,9 @@ static void test_tailcall_bpf2bpf_3(void)
 		goto out;
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
@@ -762,7 +762,7 @@ static void test_tailcall_bpf2bpf_4(bool noise)
 	if (CHECK_FAIL(err))
 		return;
 
-	prog = bpf_object__find_program_by_title(obj, "classifier");
+	prog = bpf_object__find_program_by_name(obj, "entry");
 	if (CHECK_FAIL(!prog))
 		goto out;
 
@@ -779,9 +779,9 @@ static void test_tailcall_bpf2bpf_4(bool noise)
 		goto out;
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "classifier/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "classifier_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (CHECK_FAIL(!prog))
 			goto out;
 
diff --git a/tools/testing/selftests/bpf/progs/for_each_array_map_elem.c b/tools/testing/selftests/bpf/progs/for_each_array_map_elem.c
index 75e8e1069fe7..df918b2469da 100644
--- a/tools/testing/selftests/bpf/progs/for_each_array_map_elem.c
+++ b/tools/testing/selftests/bpf/progs/for_each_array_map_elem.c
@@ -47,7 +47,7 @@ check_percpu_elem(struct bpf_map *map, __u32 *key, __u64 *val,
 
 u32 arraymap_output = 0;
 
-SEC("classifier")
+SEC("tc")
 int test_pkt_access(struct __sk_buff *skb)
 {
 	struct callback_ctx data;
diff --git a/tools/testing/selftests/bpf/progs/for_each_hash_map_elem.c b/tools/testing/selftests/bpf/progs/for_each_hash_map_elem.c
index 913dd91aafff..276994d5c0c7 100644
--- a/tools/testing/selftests/bpf/progs/for_each_hash_map_elem.c
+++ b/tools/testing/selftests/bpf/progs/for_each_hash_map_elem.c
@@ -78,7 +78,7 @@ int hashmap_output = 0;
 int hashmap_elems = 0;
 int percpu_map_elems = 0;
 
-SEC("classifier")
+SEC("tc")
 int test_pkt_access(struct __sk_buff *skb)
 {
 	struct callback_ctx data;
diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test.c b/tools/testing/selftests/bpf/progs/kfunc_call_test.c
index 470f8723e463..8a8cf59017aa 100644
--- a/tools/testing/selftests/bpf/progs/kfunc_call_test.c
+++ b/tools/testing/selftests/bpf/progs/kfunc_call_test.c
@@ -8,7 +8,7 @@ extern int bpf_kfunc_call_test2(struct sock *sk, __u32 a, __u32 b) __ksym;
 extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
 				  __u32 c, __u64 d) __ksym;
 
-SEC("classifier")
+SEC("tc")
 int kfunc_call_test2(struct __sk_buff *skb)
 {
 	struct bpf_sock *sk = skb->sk;
@@ -23,7 +23,7 @@ int kfunc_call_test2(struct __sk_buff *skb)
 	return bpf_kfunc_call_test2((struct sock *)sk, 1, 2);
 }
 
-SEC("classifier")
+SEC("tc")
 int kfunc_call_test1(struct __sk_buff *skb)
 {
 	struct bpf_sock *sk = skb->sk;
diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c b/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
index 5fbd9e232d44..c1fdecabeabf 100644
--- a/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
+++ b/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
@@ -33,7 +33,7 @@ int __noinline f1(struct __sk_buff *skb)
 	return (__u32)bpf_kfunc_call_test1((struct sock *)sk, 1, 2, 3, 4);
 }
 
-SEC("classifier")
+SEC("tc")
 int kfunc_call_test1(struct __sk_buff *skb)
 {
 	return f1(skb);
diff --git a/tools/testing/selftests/bpf/progs/skb_pkt_end.c b/tools/testing/selftests/bpf/progs/skb_pkt_end.c
index 7f2eaa2f89f8..992b7861003a 100644
--- a/tools/testing/selftests/bpf/progs/skb_pkt_end.c
+++ b/tools/testing/selftests/bpf/progs/skb_pkt_end.c
@@ -25,7 +25,7 @@ out:
 	return ip;
 }
 
-SEC("classifier/cls")
+SEC("tc")
 int main_prog(struct __sk_buff *skb)
 {
 	struct iphdr *ip = NULL;
diff --git a/tools/testing/selftests/bpf/progs/tailcall1.c b/tools/testing/selftests/bpf/progs/tailcall1.c
index 7115bcefbe8a..8159a0b4a69a 100644
--- a/tools/testing/selftests/bpf/progs/tailcall1.c
+++ b/tools/testing/selftests/bpf/progs/tailcall1.c
@@ -11,8 +11,8 @@ struct {
 } jmp_table SEC(".maps");
 
 #define TAIL_FUNC(x) 				\
-	SEC("classifier/" #x)			\
-	int bpf_func_##x(struct __sk_buff *skb)	\
+	SEC("tc")				\
+	int classifier_##x(struct __sk_buff *skb)	\
 	{					\
 		return x;			\
 	}
@@ -20,7 +20,7 @@ TAIL_FUNC(0)
 TAIL_FUNC(1)
 TAIL_FUNC(2)
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	/* Multiple locations to make sure we patch
@@ -45,4 +45,3 @@ int entry(struct __sk_buff *skb)
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/tailcall2.c b/tools/testing/selftests/bpf/progs/tailcall2.c
index 0431e4fe7efd..a5ff53e61702 100644
--- a/tools/testing/selftests/bpf/progs/tailcall2.c
+++ b/tools/testing/selftests/bpf/progs/tailcall2.c
@@ -10,41 +10,41 @@ struct {
 	__uint(value_size, sizeof(__u32));
 } jmp_table SEC(".maps");
 
-SEC("classifier/0")
-int bpf_func_0(struct __sk_buff *skb)
+SEC("tc")
+int classifier_0(struct __sk_buff *skb)
 {
 	bpf_tail_call_static(skb, &jmp_table, 1);
 	return 0;
 }
 
-SEC("classifier/1")
-int bpf_func_1(struct __sk_buff *skb)
+SEC("tc")
+int classifier_1(struct __sk_buff *skb)
 {
 	bpf_tail_call_static(skb, &jmp_table, 2);
 	return 1;
 }
 
-SEC("classifier/2")
-int bpf_func_2(struct __sk_buff *skb)
+SEC("tc")
+int classifier_2(struct __sk_buff *skb)
 {
 	return 2;
 }
 
-SEC("classifier/3")
-int bpf_func_3(struct __sk_buff *skb)
+SEC("tc")
+int classifier_3(struct __sk_buff *skb)
 {
 	bpf_tail_call_static(skb, &jmp_table, 4);
 	return 3;
 }
 
-SEC("classifier/4")
-int bpf_func_4(struct __sk_buff *skb)
+SEC("tc")
+int classifier_4(struct __sk_buff *skb)
 {
 	bpf_tail_call_static(skb, &jmp_table, 3);
 	return 4;
 }
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	bpf_tail_call_static(skb, &jmp_table, 0);
@@ -56,4 +56,3 @@ int entry(struct __sk_buff *skb)
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/tailcall3.c b/tools/testing/selftests/bpf/progs/tailcall3.c
index 910858fe078a..f60bcd7b8d4b 100644
--- a/tools/testing/selftests/bpf/progs/tailcall3.c
+++ b/tools/testing/selftests/bpf/progs/tailcall3.c
@@ -12,15 +12,15 @@ struct {
 
 int count = 0;
 
-SEC("classifier/0")
-int bpf_func_0(struct __sk_buff *skb)
+SEC("tc")
+int classifier_0(struct __sk_buff *skb)
 {
 	count++;
 	bpf_tail_call_static(skb, &jmp_table, 0);
 	return 1;
 }
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	bpf_tail_call_static(skb, &jmp_table, 0);
@@ -28,4 +28,3 @@ int entry(struct __sk_buff *skb)
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/tailcall4.c b/tools/testing/selftests/bpf/progs/tailcall4.c
index bd4be135c39d..a56bbc2313ca 100644
--- a/tools/testing/selftests/bpf/progs/tailcall4.c
+++ b/tools/testing/selftests/bpf/progs/tailcall4.c
@@ -13,8 +13,8 @@ struct {
 int selector = 0;
 
 #define TAIL_FUNC(x)				\
-	SEC("classifier/" #x)			\
-	int bpf_func_##x(struct __sk_buff *skb)	\
+	SEC("tc")				\
+	int classifier_##x(struct __sk_buff *skb)	\
 	{					\
 		return x;			\
 	}
@@ -22,7 +22,7 @@ TAIL_FUNC(0)
 TAIL_FUNC(1)
 TAIL_FUNC(2)
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	bpf_tail_call(skb, &jmp_table, selector);
@@ -30,4 +30,3 @@ int entry(struct __sk_buff *skb)
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/tailcall5.c b/tools/testing/selftests/bpf/progs/tailcall5.c
index adf30a33064e..8d03496eb6ca 100644
--- a/tools/testing/selftests/bpf/progs/tailcall5.c
+++ b/tools/testing/selftests/bpf/progs/tailcall5.c
@@ -13,8 +13,8 @@ struct {
 int selector = 0;
 
 #define TAIL_FUNC(x)				\
-	SEC("classifier/" #x)			\
-	int bpf_func_##x(struct __sk_buff *skb)	\
+	SEC("tc")				\
+	int classifier_##x(struct __sk_buff *skb)	\
 	{					\
 		return x;			\
 	}
@@ -22,7 +22,7 @@ TAIL_FUNC(0)
 TAIL_FUNC(1)
 TAIL_FUNC(2)
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	int idx = 0;
@@ -37,4 +37,3 @@ int entry(struct __sk_buff *skb)
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/tailcall6.c b/tools/testing/selftests/bpf/progs/tailcall6.c
index 0f4a811cc028..d77b8abd62f3 100644
--- a/tools/testing/selftests/bpf/progs/tailcall6.c
+++ b/tools/testing/selftests/bpf/progs/tailcall6.c
@@ -12,8 +12,8 @@ struct {
 
 int count, which;
 
-SEC("classifier/0")
-int bpf_func_0(struct __sk_buff *skb)
+SEC("tc")
+int classifier_0(struct __sk_buff *skb)
 {
 	count++;
 	if (__builtin_constant_p(which))
@@ -22,7 +22,7 @@ int bpf_func_0(struct __sk_buff *skb)
 	return 1;
 }
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	if (__builtin_constant_p(which))
diff --git a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf1.c b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf1.c
index 0103f3dd9f02..8c91428deb90 100644
--- a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf1.c
+++ b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf1.c
@@ -10,8 +10,8 @@ struct {
 } jmp_table SEC(".maps");
 
 #define TAIL_FUNC(x) 				\
-	SEC("classifier/" #x)			\
-	int bpf_func_##x(struct __sk_buff *skb)	\
+	SEC("tc")				\
+	int classifier_##x(struct __sk_buff *skb)	\
 	{					\
 		return x;			\
 	}
@@ -26,7 +26,7 @@ int subprog_tail(struct __sk_buff *skb)
 	return skb->len * 2;
 }
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	bpf_tail_call_static(skb, &jmp_table, 1);
@@ -35,4 +35,3 @@ int entry(struct __sk_buff *skb)
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf2.c b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf2.c
index 3cc4c12817b5..ce97d141daee 100644
--- a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf2.c
+++ b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf2.c
@@ -22,14 +22,14 @@ int subprog_tail(struct __sk_buff *skb)
 
 int count = 0;
 
-SEC("classifier/0")
-int bpf_func_0(struct __sk_buff *skb)
+SEC("tc")
+int classifier_0(struct __sk_buff *skb)
 {
 	count++;
 	return subprog_tail(skb);
 }
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	bpf_tail_call_static(skb, &jmp_table, 0);
@@ -38,4 +38,3 @@ int entry(struct __sk_buff *skb)
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf3.c b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf3.c
index 0d5482bea6c9..7fab39a3bb12 100644
--- a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf3.c
+++ b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf3.c
@@ -33,23 +33,23 @@ int subprog_tail(struct __sk_buff *skb)
 	return skb->len * 2;
 }
 
-SEC("classifier/0")
-int bpf_func_0(struct __sk_buff *skb)
+SEC("tc")
+int classifier_0(struct __sk_buff *skb)
 {
 	volatile char arr[128] = {};
 
 	return subprog_tail2(skb);
 }
 
-SEC("classifier/1")
-int bpf_func_1(struct __sk_buff *skb)
+SEC("tc")
+int classifier_1(struct __sk_buff *skb)
 {
 	volatile char arr[128] = {};
 
 	return skb->len * 3;
 }
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	volatile char arr[128] = {};
@@ -58,4 +58,3 @@ int entry(struct __sk_buff *skb)
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
index e89368a50b97..b67e8022d500 100644
--- a/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
+++ b/tools/testing/selftests/bpf/progs/tailcall_bpf2bpf4.c
@@ -50,30 +50,29 @@ int subprog_tail(struct __sk_buff *skb)
 	return skb->len;
 }
 
-SEC("classifier/1")
-int bpf_func_1(struct __sk_buff *skb)
+SEC("tc")
+int classifier_1(struct __sk_buff *skb)
 {
 	return subprog_tail_2(skb);
 }
 
-SEC("classifier/2")
-int bpf_func_2(struct __sk_buff *skb)
+SEC("tc")
+int classifier_2(struct __sk_buff *skb)
 {
 	count++;
 	return subprog_tail_2(skb);
 }
 
-SEC("classifier/0")
-int bpf_func_0(struct __sk_buff *skb)
+SEC("tc")
+int classifier_0(struct __sk_buff *skb)
 {
 	return subprog_tail_1(skb);
 }
 
-SEC("classifier")
+SEC("tc")
 int entry(struct __sk_buff *skb)
 {
 	return subprog_tail(skb);
 }
 
 char __license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c b/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c
index 9a6b85dd52d2..e2bea4da194b 100644
--- a/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c
+++ b/tools/testing/selftests/bpf/progs/test_btf_skc_cls_ingress.c
@@ -145,7 +145,7 @@ release:
 	return TC_ACT_OK;
 }
 
-SEC("classifier/ingress")
+SEC("tc")
 int cls_ingress(struct __sk_buff *skb)
 {
 	struct ipv6hdr *ip6h;
diff --git a/tools/testing/selftests/bpf/progs/test_check_mtu.c b/tools/testing/selftests/bpf/progs/test_check_mtu.c
index 71184af57749..2ec1de11a3ae 100644
--- a/tools/testing/selftests/bpf/progs/test_check_mtu.c
+++ b/tools/testing/selftests/bpf/progs/test_check_mtu.c
@@ -153,7 +153,7 @@ int xdp_input_len_exceed(struct xdp_md *ctx)
 	return retval;
 }
 
-SEC("classifier")
+SEC("tc")
 int tc_use_helper(struct __sk_buff *ctx)
 {
 	int retval = BPF_OK; /* Expected retval on successful test */
@@ -172,7 +172,7 @@ out:
 	return retval;
 }
 
-SEC("classifier")
+SEC("tc")
 int tc_exceed_mtu(struct __sk_buff *ctx)
 {
 	__u32 ifindex = GLOBAL_USER_IFINDEX;
@@ -196,7 +196,7 @@ int tc_exceed_mtu(struct __sk_buff *ctx)
 	return retval;
 }
 
-SEC("classifier")
+SEC("tc")
 int tc_exceed_mtu_da(struct __sk_buff *ctx)
 {
 	/* SKB Direct-Access variant */
@@ -223,7 +223,7 @@ int tc_exceed_mtu_da(struct __sk_buff *ctx)
 	return retval;
 }
 
-SEC("classifier")
+SEC("tc")
 int tc_minus_delta(struct __sk_buff *ctx)
 {
 	int retval = BPF_OK; /* Expected retval on successful test */
@@ -245,7 +245,7 @@ int tc_minus_delta(struct __sk_buff *ctx)
 	return retval;
 }
 
-SEC("classifier")
+SEC("tc")
 int tc_input_len(struct __sk_buff *ctx)
 {
 	int retval = BPF_OK; /* Expected retval on successful test */
@@ -265,7 +265,7 @@ int tc_input_len(struct __sk_buff *ctx)
 	return retval;
 }
 
-SEC("classifier")
+SEC("tc")
 int tc_input_len_exceed(struct __sk_buff *ctx)
 {
 	int retval = BPF_DROP; /* Fail */
diff --git a/tools/testing/selftests/bpf/progs/test_cls_redirect.c b/tools/testing/selftests/bpf/progs/test_cls_redirect.c
index e2a5acc4785c..2833ad722cb7 100644
--- a/tools/testing/selftests/bpf/progs/test_cls_redirect.c
+++ b/tools/testing/selftests/bpf/progs/test_cls_redirect.c
@@ -928,7 +928,7 @@ static INLINING verdict_t process_ipv6(buf_t *pkt, metrics_t *metrics)
 	}
 }
 
-SEC("classifier/cls_redirect")
+SEC("tc")
 int cls_redirect(struct __sk_buff *skb)
 {
 	metrics_t *metrics = get_global_metrics();
diff --git a/tools/testing/selftests/bpf/progs/test_global_data.c b/tools/testing/selftests/bpf/progs/test_global_data.c
index 1319be1c54ba..719e314ef3e4 100644
--- a/tools/testing/selftests/bpf/progs/test_global_data.c
+++ b/tools/testing/selftests/bpf/progs/test_global_data.c
@@ -68,7 +68,7 @@ static struct foo struct3 = {
 		bpf_map_update_elem(&result_##map, &key, var, 0);	\
 	} while (0)
 
-SEC("classifier/static_data_load")
+SEC("tc")
 int load_static_data(struct __sk_buff *skb)
 {
 	static const __u64 bar = ~0;
diff --git a/tools/testing/selftests/bpf/progs/test_global_func1.c b/tools/testing/selftests/bpf/progs/test_global_func1.c
index 880260f6d536..7b42dad187b8 100644
--- a/tools/testing/selftests/bpf/progs/test_global_func1.c
+++ b/tools/testing/selftests/bpf/progs/test_global_func1.c
@@ -38,7 +38,7 @@ int f3(int val, struct __sk_buff *skb, int var)
 	return skb->ifindex * val * var;
 }
 
-SEC("classifier/test")
+SEC("tc")
 int test_cls(struct __sk_buff *skb)
 {
 	return f0(1, skb) + f1(skb) + f2(2, skb) + f3(3, skb, 4);
diff --git a/tools/testing/selftests/bpf/progs/test_global_func3.c b/tools/testing/selftests/bpf/progs/test_global_func3.c
index 86f0ecb304fc..01bf8275dfd6 100644
--- a/tools/testing/selftests/bpf/progs/test_global_func3.c
+++ b/tools/testing/selftests/bpf/progs/test_global_func3.c
@@ -54,7 +54,7 @@ int f8(struct __sk_buff *skb)
 }
 #endif
 
-SEC("classifier/test")
+SEC("tc")
 int test_cls(struct __sk_buff *skb)
 {
 #ifndef NO_FN8
diff --git a/tools/testing/selftests/bpf/progs/test_global_func5.c b/tools/testing/selftests/bpf/progs/test_global_func5.c
index 260c25b827ef..9248d03e0d06 100644
--- a/tools/testing/selftests/bpf/progs/test_global_func5.c
+++ b/tools/testing/selftests/bpf/progs/test_global_func5.c
@@ -24,7 +24,7 @@ int f3(int val, struct __sk_buff *skb)
 	return skb->ifindex * val;
 }
 
-SEC("classifier/test")
+SEC("tc")
 int test_cls(struct __sk_buff *skb)
 {
 	return f1(skb) + f2(2, skb) + f3(3, skb);
diff --git a/tools/testing/selftests/bpf/progs/test_global_func6.c b/tools/testing/selftests/bpf/progs/test_global_func6.c
index 69e19c64e10b..af8c78bdfb25 100644
--- a/tools/testing/selftests/bpf/progs/test_global_func6.c
+++ b/tools/testing/selftests/bpf/progs/test_global_func6.c
@@ -24,7 +24,7 @@ int f3(int val, struct __sk_buff *skb)
 	return skb->ifindex * val;
 }
 
-SEC("classifier/test")
+SEC("tc")
 int test_cls(struct __sk_buff *skb)
 {
 	return f1(skb) + f2(2, skb) + f3(3, skb);
diff --git a/tools/testing/selftests/bpf/progs/test_global_func7.c b/tools/testing/selftests/bpf/progs/test_global_func7.c
index 309b3f6136bd..6cb8e2f5254c 100644
--- a/tools/testing/selftests/bpf/progs/test_global_func7.c
+++ b/tools/testing/selftests/bpf/progs/test_global_func7.c
@@ -10,7 +10,7 @@ void foo(struct __sk_buff *skb)
 	skb->tc_index = 0;
 }
 
-SEC("classifier/test")
+SEC("tc")
 int test_cls(struct __sk_buff *skb)
 {
 	foo(skb);
diff --git a/tools/testing/selftests/bpf/progs/test_pkt_access.c b/tools/testing/selftests/bpf/progs/test_pkt_access.c
index 852051064507..3cfd88141ddc 100644
--- a/tools/testing/selftests/bpf/progs/test_pkt_access.c
+++ b/tools/testing/selftests/bpf/progs/test_pkt_access.c
@@ -97,7 +97,7 @@ int test_pkt_write_access_subprog(struct __sk_buff *skb, __u32 off)
 	return 0;
 }
 
-SEC("classifier/test_pkt_access")
+SEC("tc")
 int test_pkt_access(struct __sk_buff *skb)
 {
 	void *data_end = (void *)(long)skb->data_end;
diff --git a/tools/testing/selftests/bpf/progs/test_pkt_md_access.c b/tools/testing/selftests/bpf/progs/test_pkt_md_access.c
index 610c74ea9f64..d1839366f3e1 100644
--- a/tools/testing/selftests/bpf/progs/test_pkt_md_access.c
+++ b/tools/testing/selftests/bpf/progs/test_pkt_md_access.c
@@ -7,8 +7,6 @@
 #include <linux/pkt_cls.h>
 #include <bpf/bpf_helpers.h>
 
-int _version SEC("version") = 1;
-
 #if  __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 #define TEST_FIELD(TYPE, FIELD, MASK)					\
 	{								\
@@ -27,7 +25,7 @@ int _version SEC("version") = 1;
 	}
 #endif
 
-SEC("classifier/test_pkt_md_access")
+SEC("tc")
 int test_pkt_md_access(struct __sk_buff *skb)
 {
 	TEST_FIELD(__u8,  len, 0xFF);
diff --git a/tools/testing/selftests/bpf/progs/test_sk_assign.c b/tools/testing/selftests/bpf/progs/test_sk_assign.c
index 1ecd987005d2..02f79356d5eb 100644
--- a/tools/testing/selftests/bpf/progs/test_sk_assign.c
+++ b/tools/testing/selftests/bpf/progs/test_sk_assign.c
@@ -36,7 +36,6 @@ struct {
 	.pinning = PIN_GLOBAL_NS,
 };
 
-int _version SEC("version") = 1;
 char _license[] SEC("license") = "GPL";
 
 /* Fill 'tuple' with L3 info, and attempt to find L4. On fail, return NULL. */
@@ -159,7 +158,7 @@ assign:
 	return ret;
 }
 
-SEC("classifier/sk_assign_test")
+SEC("tc")
 int bpf_sk_assign_test(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple *tuple, ln = {0};
diff --git a/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c b/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c
index 8249075f088f..40f161480a2f 100644
--- a/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c
@@ -15,7 +15,6 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_endian.h>
 
-int _version SEC("version") = 1;
 char _license[] SEC("license") = "GPL";
 
 /* Fill 'tuple' with L3 info, and attempt to find L4. On fail, return NULL. */
@@ -53,8 +52,8 @@ static struct bpf_sock_tuple *get_tuple(void *data, __u64 nh_off,
 	return result;
 }
 
-SEC("classifier/sk_lookup_success")
-int bpf_sk_lookup_test0(struct __sk_buff *skb)
+SEC("tc")
+int sk_lookup_success(struct __sk_buff *skb)
 {
 	void *data_end = (void *)(long)skb->data_end;
 	void *data = (void *)(long)skb->data;
@@ -79,8 +78,8 @@ int bpf_sk_lookup_test0(struct __sk_buff *skb)
 	return sk ? TC_ACT_OK : TC_ACT_UNSPEC;
 }
 
-SEC("classifier/sk_lookup_success_simple")
-int bpf_sk_lookup_test1(struct __sk_buff *skb)
+SEC("tc")
+int sk_lookup_success_simple(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
 	struct bpf_sock *sk;
@@ -91,8 +90,8 @@ int bpf_sk_lookup_test1(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/err_use_after_free")
-int bpf_sk_lookup_uaf(struct __sk_buff *skb)
+SEC("tc")
+int err_use_after_free(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
 	struct bpf_sock *sk;
@@ -106,8 +105,8 @@ int bpf_sk_lookup_uaf(struct __sk_buff *skb)
 	return family;
 }
 
-SEC("classifier/err_modify_sk_pointer")
-int bpf_sk_lookup_modptr(struct __sk_buff *skb)
+SEC("tc")
+int err_modify_sk_pointer(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
 	struct bpf_sock *sk;
@@ -121,8 +120,8 @@ int bpf_sk_lookup_modptr(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/err_modify_sk_or_null_pointer")
-int bpf_sk_lookup_modptr_or_null(struct __sk_buff *skb)
+SEC("tc")
+int err_modify_sk_or_null_pointer(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
 	struct bpf_sock *sk;
@@ -135,8 +134,8 @@ int bpf_sk_lookup_modptr_or_null(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/err_no_release")
-int bpf_sk_lookup_test2(struct __sk_buff *skb)
+SEC("tc")
+int err_no_release(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
 
@@ -144,8 +143,8 @@ int bpf_sk_lookup_test2(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/err_release_twice")
-int bpf_sk_lookup_test3(struct __sk_buff *skb)
+SEC("tc")
+int err_release_twice(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
 	struct bpf_sock *sk;
@@ -156,8 +155,8 @@ int bpf_sk_lookup_test3(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/err_release_unchecked")
-int bpf_sk_lookup_test4(struct __sk_buff *skb)
+SEC("tc")
+int err_release_unchecked(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
 	struct bpf_sock *sk;
@@ -173,8 +172,8 @@ void lookup_no_release(struct __sk_buff *skb)
 	bpf_sk_lookup_tcp(skb, &tuple, sizeof(tuple), BPF_F_CURRENT_NETNS, 0);
 }
 
-SEC("classifier/err_no_release_subcall")
-int bpf_sk_lookup_test5(struct __sk_buff *skb)
+SEC("tc")
+int err_no_release_subcall(struct __sk_buff *skb)
 {
 	lookup_no_release(skb);
 	return 0;
diff --git a/tools/testing/selftests/bpf/progs/test_skb_helpers.c b/tools/testing/selftests/bpf/progs/test_skb_helpers.c
index bb3fbf1a29e3..507215791c5b 100644
--- a/tools/testing/selftests/bpf/progs/test_skb_helpers.c
+++ b/tools/testing/selftests/bpf/progs/test_skb_helpers.c
@@ -14,7 +14,7 @@ struct {
 
 char _license[] SEC("license") = "GPL";
 
-SEC("classifier/test_skb_helpers")
+SEC("tc")
 int test_skb_helpers(struct __sk_buff *skb)
 {
 	struct task_struct *task;
diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_update.c b/tools/testing/selftests/bpf/progs/test_sockmap_update.c
index 9d0c9f28cab2..6d64ea536e3d 100644
--- a/tools/testing/selftests/bpf/progs/test_sockmap_update.c
+++ b/tools/testing/selftests/bpf/progs/test_sockmap_update.c
@@ -24,7 +24,7 @@ struct {
 	__type(value, __u64);
 } dst_sock_hash SEC(".maps");
 
-SEC("classifier/copy_sock_map")
+SEC("tc")
 int copy_sock_map(void *ctx)
 {
 	struct bpf_sock *sk;
diff --git a/tools/testing/selftests/bpf/progs/test_tc_bpf.c b/tools/testing/selftests/bpf/progs/test_tc_bpf.c
index 18a3a7ed924a..d28ca8d1f3d0 100644
--- a/tools/testing/selftests/bpf/progs/test_tc_bpf.c
+++ b/tools/testing/selftests/bpf/progs/test_tc_bpf.c
@@ -5,7 +5,7 @@
 
 /* Dummy prog to test TC-BPF API */
 
-SEC("classifier")
+SEC("tc")
 int cls(struct __sk_buff *skb)
 {
 	return 0;
diff --git a/tools/testing/selftests/bpf/progs/test_tc_neigh.c b/tools/testing/selftests/bpf/progs/test_tc_neigh.c
index 0c93d326a663..3e32ea375ab4 100644
--- a/tools/testing/selftests/bpf/progs/test_tc_neigh.c
+++ b/tools/testing/selftests/bpf/progs/test_tc_neigh.c
@@ -70,7 +70,7 @@ static __always_inline bool is_remote_ep_v6(struct __sk_buff *skb,
 	return v6_equal(ip6h->daddr, addr);
 }
 
-SEC("classifier/chk_egress")
+SEC("tc")
 int tc_chk(struct __sk_buff *skb)
 {
 	void *data_end = ctx_ptr(skb->data_end);
@@ -83,7 +83,7 @@ int tc_chk(struct __sk_buff *skb)
 	return !raw[0] && !raw[1] && !raw[2] ? TC_ACT_SHOT : TC_ACT_OK;
 }
 
-SEC("classifier/dst_ingress")
+SEC("tc")
 int tc_dst(struct __sk_buff *skb)
 {
 	__u8 zero[ETH_ALEN * 2];
@@ -108,7 +108,7 @@ int tc_dst(struct __sk_buff *skb)
 	return bpf_redirect_neigh(IFINDEX_SRC, NULL, 0, 0);
 }
 
-SEC("classifier/src_ingress")
+SEC("tc")
 int tc_src(struct __sk_buff *skb)
 {
 	__u8 zero[ETH_ALEN * 2];
diff --git a/tools/testing/selftests/bpf/progs/test_tc_neigh_fib.c b/tools/testing/selftests/bpf/progs/test_tc_neigh_fib.c
index f7ab69cf018e..ec4cce19362d 100644
--- a/tools/testing/selftests/bpf/progs/test_tc_neigh_fib.c
+++ b/tools/testing/selftests/bpf/progs/test_tc_neigh_fib.c
@@ -75,7 +75,7 @@ static __always_inline int fill_fib_params_v6(struct __sk_buff *skb,
 	return 0;
 }
 
-SEC("classifier/chk_egress")
+SEC("tc")
 int tc_chk(struct __sk_buff *skb)
 {
 	void *data_end = ctx_ptr(skb->data_end);
@@ -143,13 +143,13 @@ static __always_inline int tc_redir(struct __sk_buff *skb)
 /* these are identical, but keep them separate for compatibility with the
  * section names expected by test_tc_redirect.sh
  */
-SEC("classifier/dst_ingress")
+SEC("tc")
 int tc_dst(struct __sk_buff *skb)
 {
 	return tc_redir(skb);
 }
 
-SEC("classifier/src_ingress")
+SEC("tc")
 int tc_src(struct __sk_buff *skb)
 {
 	return tc_redir(skb);
diff --git a/tools/testing/selftests/bpf/progs/test_tc_peer.c b/tools/testing/selftests/bpf/progs/test_tc_peer.c
index fe818cd5f010..365eacb5dc34 100644
--- a/tools/testing/selftests/bpf/progs/test_tc_peer.c
+++ b/tools/testing/selftests/bpf/progs/test_tc_peer.c
@@ -16,31 +16,31 @@ volatile const __u32 IFINDEX_DST;
 static const __u8 src_mac[] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55};
 static const __u8 dst_mac[] = {0x00, 0x22, 0x33, 0x44, 0x55, 0x66};
 
-SEC("classifier/chk_egress")
+SEC("tc")
 int tc_chk(struct __sk_buff *skb)
 {
 	return TC_ACT_SHOT;
 }
 
-SEC("classifier/dst_ingress")
+SEC("tc")
 int tc_dst(struct __sk_buff *skb)
 {
 	return bpf_redirect_peer(IFINDEX_SRC, 0);
 }
 
-SEC("classifier/src_ingress")
+SEC("tc")
 int tc_src(struct __sk_buff *skb)
 {
 	return bpf_redirect_peer(IFINDEX_DST, 0);
 }
 
-SEC("classifier/dst_ingress_l3")
+SEC("tc")
 int tc_dst_l3(struct __sk_buff *skb)
 {
 	return bpf_redirect(IFINDEX_SRC, 0);
 }
 
-SEC("classifier/src_ingress_l3")
+SEC("tc")
 int tc_src_l3(struct __sk_buff *skb)
 {
 	__u16 proto = skb->protocol;
diff --git a/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c b/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c
index fac7ef99f9a6..cd747cd93dbe 100644
--- a/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcp_check_syncookie_kern.c
@@ -148,7 +148,7 @@ release:
 	bpf_sk_release(sk);
 }
 
-SEC("clsact/check_syncookie")
+SEC("tc")
 int check_syncookie_clsact(struct __sk_buff *skb)
 {
 	check_syncookie(skb, (void *)(long)skb->data,
diff --git a/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh b/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh
index fed765157c53..6413c1472554 100755
--- a/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh
+++ b/tools/testing/selftests/bpf/test_tcp_check_syncookie.sh
@@ -76,7 +76,7 @@ DIR=$(dirname $0)
 TEST_IF=lo
 MAX_PING_TRIES=5
 BPF_PROG_OBJ="${DIR}/test_tcp_check_syncookie_kern.o"
-CLSACT_SECTION="clsact/check_syncookie"
+CLSACT_SECTION="tc"
 XDP_SECTION="xdp"
 BPF_PROG_ID=0
 PROG="${DIR}/test_tcp_check_syncookie_user"
-- 
cgit v1.2.3


From 15669e1dcd75fe6d51e495f8479222b5884665b6 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Tue, 28 Sep 2021 09:19:40 -0700
Subject: selftests/bpf: Normalize all the rest SEC() uses

Normalize all the other non-conforming SEC() usages across all
selftests. This is in preparation for libbpf to start to enforce
stricter SEC() rules in libbpf 1.0 mode.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-5-andrii@kernel.org
---
 .../selftests/bpf/prog_tests/flow_dissector.c      |  4 +--
 .../selftests/bpf/prog_tests/sockopt_multi.c       | 30 +++++++++++-----------
 tools/testing/selftests/bpf/progs/bpf_flow.c       |  3 +--
 .../bpf/progs/cg_storage_multi_isolated.c          |  4 +--
 .../selftests/bpf/progs/cg_storage_multi_shared.c  |  4 +--
 tools/testing/selftests/bpf/progs/sockopt_multi.c  |  5 ++--
 .../testing/selftests/bpf/progs/test_cgroup_link.c |  4 +--
 .../bpf/progs/test_misc_tcp_hdr_options.c          |  2 +-
 tools/testing/selftests/bpf/progs/test_sk_lookup.c |  6 ++---
 .../selftests/bpf/progs/test_sockmap_listen.c      |  2 +-
 .../bpf/progs/test_sockmap_skb_verdict_attach.c    |  2 +-
 .../selftests/bpf/progs/test_tcp_hdr_options.c     |  2 +-
 12 files changed, 33 insertions(+), 35 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
index 225714f71ac6..ac54e3f91d42 100644
--- a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
+++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
@@ -458,9 +458,9 @@ static int init_prog_array(struct bpf_object *obj, struct bpf_map *prog_array)
 		return -1;
 
 	for (i = 0; i < bpf_map__def(prog_array)->max_entries; i++) {
-		snprintf(prog_name, sizeof(prog_name), "flow_dissector/%i", i);
+		snprintf(prog_name, sizeof(prog_name), "flow_dissector_%d", i);
 
-		prog = bpf_object__find_program_by_title(obj, prog_name);
+		prog = bpf_object__find_program_by_name(obj, prog_name);
 		if (!prog)
 			return -1;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_multi.c b/tools/testing/selftests/bpf/prog_tests/sockopt_multi.c
index 51fac975b316..bc34f7773444 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockopt_multi.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockopt_multi.c
@@ -2,7 +2,7 @@
 #include <test_progs.h>
 #include "cgroup_helpers.h"
 
-static int prog_attach(struct bpf_object *obj, int cgroup_fd, const char *title)
+static int prog_attach(struct bpf_object *obj, int cgroup_fd, const char *title, const char *name)
 {
 	enum bpf_attach_type attach_type;
 	enum bpf_prog_type prog_type;
@@ -15,23 +15,23 @@ static int prog_attach(struct bpf_object *obj, int cgroup_fd, const char *title)
 		return -1;
 	}
 
-	prog = bpf_object__find_program_by_title(obj, title);
+	prog = bpf_object__find_program_by_name(obj, name);
 	if (!prog) {
-		log_err("Failed to find %s BPF program", title);
+		log_err("Failed to find %s BPF program", name);
 		return -1;
 	}
 
 	err = bpf_prog_attach(bpf_program__fd(prog), cgroup_fd,
 			      attach_type, BPF_F_ALLOW_MULTI);
 	if (err) {
-		log_err("Failed to attach %s BPF program", title);
+		log_err("Failed to attach %s BPF program", name);
 		return -1;
 	}
 
 	return 0;
 }
 
-static int prog_detach(struct bpf_object *obj, int cgroup_fd, const char *title)
+static int prog_detach(struct bpf_object *obj, int cgroup_fd, const char *title, const char *name)
 {
 	enum bpf_attach_type attach_type;
 	enum bpf_prog_type prog_type;
@@ -42,7 +42,7 @@ static int prog_detach(struct bpf_object *obj, int cgroup_fd, const char *title)
 	if (err)
 		return -1;
 
-	prog = bpf_object__find_program_by_title(obj, title);
+	prog = bpf_object__find_program_by_name(obj, name);
 	if (!prog)
 		return -1;
 
@@ -89,7 +89,7 @@ static int run_getsockopt_test(struct bpf_object *obj, int cg_parent,
 	 * - child:  0x80 -> 0x90
 	 */
 
-	err = prog_attach(obj, cg_child, "cgroup/getsockopt/child");
+	err = prog_attach(obj, cg_child, "cgroup/getsockopt", "_getsockopt_child");
 	if (err)
 		goto detach;
 
@@ -113,7 +113,7 @@ static int run_getsockopt_test(struct bpf_object *obj, int cg_parent,
 	 * - parent: 0x90 -> 0xA0
 	 */
 
-	err = prog_attach(obj, cg_parent, "cgroup/getsockopt/parent");
+	err = prog_attach(obj, cg_parent, "cgroup/getsockopt", "_getsockopt_parent");
 	if (err)
 		goto detach;
 
@@ -157,7 +157,7 @@ static int run_getsockopt_test(struct bpf_object *obj, int cg_parent,
 	 * - parent: unexpected 0x40, EPERM
 	 */
 
-	err = prog_detach(obj, cg_child, "cgroup/getsockopt/child");
+	err = prog_detach(obj, cg_child, "cgroup/getsockopt", "_getsockopt_child");
 	if (err) {
 		log_err("Failed to detach child program");
 		goto detach;
@@ -198,8 +198,8 @@ static int run_getsockopt_test(struct bpf_object *obj, int cg_parent,
 	}
 
 detach:
-	prog_detach(obj, cg_child, "cgroup/getsockopt/child");
-	prog_detach(obj, cg_parent, "cgroup/getsockopt/parent");
+	prog_detach(obj, cg_child, "cgroup/getsockopt", "_getsockopt_child");
+	prog_detach(obj, cg_parent, "cgroup/getsockopt", "_getsockopt_parent");
 
 	return err;
 }
@@ -236,7 +236,7 @@ static int run_setsockopt_test(struct bpf_object *obj, int cg_parent,
 
 	/* Attach child program and make sure it adds 0x10. */
 
-	err = prog_attach(obj, cg_child, "cgroup/setsockopt");
+	err = prog_attach(obj, cg_child, "cgroup/setsockopt", "_setsockopt");
 	if (err)
 		goto detach;
 
@@ -263,7 +263,7 @@ static int run_setsockopt_test(struct bpf_object *obj, int cg_parent,
 
 	/* Attach parent program and make sure it adds another 0x10. */
 
-	err = prog_attach(obj, cg_parent, "cgroup/setsockopt");
+	err = prog_attach(obj, cg_parent, "cgroup/setsockopt", "_setsockopt");
 	if (err)
 		goto detach;
 
@@ -289,8 +289,8 @@ static int run_setsockopt_test(struct bpf_object *obj, int cg_parent,
 	}
 
 detach:
-	prog_detach(obj, cg_child, "cgroup/setsockopt");
-	prog_detach(obj, cg_parent, "cgroup/setsockopt");
+	prog_detach(obj, cg_child, "cgroup/setsockopt", "_setsockopt");
+	prog_detach(obj, cg_parent, "cgroup/setsockopt", "_setsockopt");
 
 	return err;
 }
diff --git a/tools/testing/selftests/bpf/progs/bpf_flow.c b/tools/testing/selftests/bpf/progs/bpf_flow.c
index 95a5a0778ed7..f266c757b3df 100644
--- a/tools/testing/selftests/bpf/progs/bpf_flow.c
+++ b/tools/testing/selftests/bpf/progs/bpf_flow.c
@@ -19,9 +19,8 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_endian.h>
 
-int _version SEC("version") = 1;
 #define PROG(F) PROG_(F, _##F)
-#define PROG_(NUM, NAME) SEC("flow_dissector/"#NUM) int bpf_func##NAME
+#define PROG_(NUM, NAME) SEC("flow_dissector") int flow_dissector_##NUM
 
 /* These are the identifiers of the BPF programs that will be used in tail
  * calls. Name is limited to 16 characters, with the terminating character and
diff --git a/tools/testing/selftests/bpf/progs/cg_storage_multi_isolated.c b/tools/testing/selftests/bpf/progs/cg_storage_multi_isolated.c
index a25373002055..3f81ff92184c 100644
--- a/tools/testing/selftests/bpf/progs/cg_storage_multi_isolated.c
+++ b/tools/testing/selftests/bpf/progs/cg_storage_multi_isolated.c
@@ -20,7 +20,7 @@ struct {
 
 __u32 invocations = 0;
 
-SEC("cgroup_skb/egress/1")
+SEC("cgroup_skb/egress")
 int egress1(struct __sk_buff *skb)
 {
 	struct cgroup_value *ptr_cg_storage =
@@ -32,7 +32,7 @@ int egress1(struct __sk_buff *skb)
 	return 1;
 }
 
-SEC("cgroup_skb/egress/2")
+SEC("cgroup_skb/egress")
 int egress2(struct __sk_buff *skb)
 {
 	struct cgroup_value *ptr_cg_storage =
diff --git a/tools/testing/selftests/bpf/progs/cg_storage_multi_shared.c b/tools/testing/selftests/bpf/progs/cg_storage_multi_shared.c
index a149f33bc533..d662db27fe4a 100644
--- a/tools/testing/selftests/bpf/progs/cg_storage_multi_shared.c
+++ b/tools/testing/selftests/bpf/progs/cg_storage_multi_shared.c
@@ -20,7 +20,7 @@ struct {
 
 __u32 invocations = 0;
 
-SEC("cgroup_skb/egress/1")
+SEC("cgroup_skb/egress")
 int egress1(struct __sk_buff *skb)
 {
 	struct cgroup_value *ptr_cg_storage =
@@ -32,7 +32,7 @@ int egress1(struct __sk_buff *skb)
 	return 1;
 }
 
-SEC("cgroup_skb/egress/2")
+SEC("cgroup_skb/egress")
 int egress2(struct __sk_buff *skb)
 {
 	struct cgroup_value *ptr_cg_storage =
diff --git a/tools/testing/selftests/bpf/progs/sockopt_multi.c b/tools/testing/selftests/bpf/progs/sockopt_multi.c
index 9d8c212dde9f..177a59069dae 100644
--- a/tools/testing/selftests/bpf/progs/sockopt_multi.c
+++ b/tools/testing/selftests/bpf/progs/sockopt_multi.c
@@ -4,9 +4,8 @@
 #include <bpf/bpf_helpers.h>
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = 1;
 
-SEC("cgroup/getsockopt/child")
+SEC("cgroup/getsockopt")
 int _getsockopt_child(struct bpf_sockopt *ctx)
 {
 	__u8 *optval_end = ctx->optval_end;
@@ -29,7 +28,7 @@ int _getsockopt_child(struct bpf_sockopt *ctx)
 	return 1;
 }
 
-SEC("cgroup/getsockopt/parent")
+SEC("cgroup/getsockopt")
 int _getsockopt_parent(struct bpf_sockopt *ctx)
 {
 	__u8 *optval_end = ctx->optval_end;
diff --git a/tools/testing/selftests/bpf/progs/test_cgroup_link.c b/tools/testing/selftests/bpf/progs/test_cgroup_link.c
index 77e47b9e4446..4faba88e45a5 100644
--- a/tools/testing/selftests/bpf/progs/test_cgroup_link.c
+++ b/tools/testing/selftests/bpf/progs/test_cgroup_link.c
@@ -6,14 +6,14 @@
 int calls = 0;
 int alt_calls = 0;
 
-SEC("cgroup_skb/egress1")
+SEC("cgroup_skb/egress")
 int egress(struct __sk_buff *skb)
 {
 	__sync_fetch_and_add(&calls, 1);
 	return 1;
 }
 
-SEC("cgroup_skb/egress2")
+SEC("cgroup_skb/egress")
 int egress_alt(struct __sk_buff *skb)
 {
 	__sync_fetch_and_add(&alt_calls, 1);
diff --git a/tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c b/tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c
index 6077a025092c..2c121c5d66a7 100644
--- a/tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c
+++ b/tools/testing/selftests/bpf/progs/test_misc_tcp_hdr_options.c
@@ -293,7 +293,7 @@ static int handle_passive_estab(struct bpf_sock_ops *skops)
 	return check_active_hdr_in(skops);
 }
 
-SEC("sockops/misc_estab")
+SEC("sockops")
 int misc_estab(struct bpf_sock_ops *skops)
 {
 	int true_val = 1;
diff --git a/tools/testing/selftests/bpf/progs/test_sk_lookup.c b/tools/testing/selftests/bpf/progs/test_sk_lookup.c
index ac6f7f205e25..6c4d32c56765 100644
--- a/tools/testing/selftests/bpf/progs/test_sk_lookup.c
+++ b/tools/testing/selftests/bpf/progs/test_sk_lookup.c
@@ -84,13 +84,13 @@ int lookup_drop(struct bpf_sk_lookup *ctx)
 	return SK_DROP;
 }
 
-SEC("sk_reuseport/reuse_pass")
+SEC("sk_reuseport")
 int reuseport_pass(struct sk_reuseport_md *ctx)
 {
 	return SK_PASS;
 }
 
-SEC("sk_reuseport/reuse_drop")
+SEC("sk_reuseport")
 int reuseport_drop(struct sk_reuseport_md *ctx)
 {
 	return SK_DROP;
@@ -194,7 +194,7 @@ int select_sock_a_no_reuseport(struct bpf_sk_lookup *ctx)
 	return err ? SK_DROP : SK_PASS;
 }
 
-SEC("sk_reuseport/select_sock_b")
+SEC("sk_reuseport")
 int select_sock_b(struct sk_reuseport_md *ctx)
 {
 	__u32 key = KEY_SERVER_B;
diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_listen.c b/tools/testing/selftests/bpf/progs/test_sockmap_listen.c
index a1cc58b10c7c..00f1456aaeda 100644
--- a/tools/testing/selftests/bpf/progs/test_sockmap_listen.c
+++ b/tools/testing/selftests/bpf/progs/test_sockmap_listen.c
@@ -56,7 +56,7 @@ int prog_stream_verdict(struct __sk_buff *skb)
 	return verdict;
 }
 
-SEC("sk_skb/skb_verdict")
+SEC("sk_skb")
 int prog_skb_verdict(struct __sk_buff *skb)
 {
 	unsigned int *count;
diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_skb_verdict_attach.c b/tools/testing/selftests/bpf/progs/test_sockmap_skb_verdict_attach.c
index 2d31f66e4f23..3c69aa971738 100644
--- a/tools/testing/selftests/bpf/progs/test_sockmap_skb_verdict_attach.c
+++ b/tools/testing/selftests/bpf/progs/test_sockmap_skb_verdict_attach.c
@@ -9,7 +9,7 @@ struct {
 	__type(value, __u64);
 } sock_map SEC(".maps");
 
-SEC("sk_skb/skb_verdict")
+SEC("sk_skb")
 int prog_skb_verdict(struct __sk_buff *skb)
 {
 	return SK_DROP;
diff --git a/tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c b/tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c
index 678bd0fad29e..5f4e87ee949a 100644
--- a/tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c
+++ b/tools/testing/selftests/bpf/progs/test_tcp_hdr_options.c
@@ -594,7 +594,7 @@ static int handle_parse_hdr(struct bpf_sock_ops *skops)
 	return CG_OK;
 }
 
-SEC("sockops/estab")
+SEC("sockops")
 int estab(struct bpf_sock_ops *skops)
 {
 	int true_val = 1;
-- 
cgit v1.2.3


From 7c80c87ad56a05ec56069c3f5d7e60b5b1eb19b4 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Tue, 28 Sep 2021 09:19:46 -0700
Subject: selftests/bpf: Switch sk_lookup selftests to strict SEC("sk_lookup")
 use

Update "sk_lookup/" definition to be a stand-alone type specifier,
with backwards-compatible prefix match logic in non-libbpf-1.0 mode.

Currently in selftests all the "sk_lookup/<whatever>" uses just use
<whatever> for duplicated unique name encoding, which is redundant as
BPF program's name (C function name) uniquely and descriptively
identifies the intended use for such BPF programs.

With libbpf's SEC_DEF("sk_lookup") definition updated, switch existing
sk_lookup programs to use "unqualified" SEC("sk_lookup") section names,
with no random text after it.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/bpf/20210928161946.2512801-11-andrii@kernel.org
---
 tools/lib/bpf/libbpf.c                             |  2 +-
 tools/testing/selftests/bpf/progs/test_sk_lookup.c | 38 +++++++++++-----------
 2 files changed, 20 insertions(+), 20 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 3e1f6211b9b9..1c859b32968d 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -8055,7 +8055,7 @@ static const struct bpf_sec_def section_defs[] = {
 	SEC_DEF("cgroup/getsockopt",	CGROUP_SOCKOPT, BPF_CGROUP_GETSOCKOPT, SEC_ATTACHABLE | SEC_SLOPPY_PFX),
 	SEC_DEF("cgroup/setsockopt",	CGROUP_SOCKOPT, BPF_CGROUP_SETSOCKOPT, SEC_ATTACHABLE | SEC_SLOPPY_PFX),
 	SEC_DEF("struct_ops+",		STRUCT_OPS, 0, SEC_NONE),
-	SEC_DEF("sk_lookup/",		SK_LOOKUP, BPF_SK_LOOKUP, SEC_ATTACHABLE),
+	SEC_DEF("sk_lookup",		SK_LOOKUP, BPF_SK_LOOKUP, SEC_ATTACHABLE | SEC_SLOPPY_PFX),
 };
 
 #define MAX_TYPE_NAME_SIZE 32
diff --git a/tools/testing/selftests/bpf/progs/test_sk_lookup.c b/tools/testing/selftests/bpf/progs/test_sk_lookup.c
index 6c4d32c56765..48534d810391 100644
--- a/tools/testing/selftests/bpf/progs/test_sk_lookup.c
+++ b/tools/testing/selftests/bpf/progs/test_sk_lookup.c
@@ -72,13 +72,13 @@ static const __u16 DST_PORT = 7007; /* Host byte order */
 static const __u32 DST_IP4 = IP4(127, 0, 0, 1);
 static const __u32 DST_IP6[] = IP6(0xfd000000, 0x0, 0x0, 0x00000001);
 
-SEC("sk_lookup/lookup_pass")
+SEC("sk_lookup")
 int lookup_pass(struct bpf_sk_lookup *ctx)
 {
 	return SK_PASS;
 }
 
-SEC("sk_lookup/lookup_drop")
+SEC("sk_lookup")
 int lookup_drop(struct bpf_sk_lookup *ctx)
 {
 	return SK_DROP;
@@ -97,7 +97,7 @@ int reuseport_drop(struct sk_reuseport_md *ctx)
 }
 
 /* Redirect packets destined for port DST_PORT to socket at redir_map[0]. */
-SEC("sk_lookup/redir_port")
+SEC("sk_lookup")
 int redir_port(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -116,7 +116,7 @@ int redir_port(struct bpf_sk_lookup *ctx)
 }
 
 /* Redirect packets destined for DST_IP4 address to socket at redir_map[0]. */
-SEC("sk_lookup/redir_ip4")
+SEC("sk_lookup")
 int redir_ip4(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -139,7 +139,7 @@ int redir_ip4(struct bpf_sk_lookup *ctx)
 }
 
 /* Redirect packets destined for DST_IP6 address to socket at redir_map[0]. */
-SEC("sk_lookup/redir_ip6")
+SEC("sk_lookup")
 int redir_ip6(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -164,7 +164,7 @@ int redir_ip6(struct bpf_sk_lookup *ctx)
 	return err ? SK_DROP : SK_PASS;
 }
 
-SEC("sk_lookup/select_sock_a")
+SEC("sk_lookup")
 int select_sock_a(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -179,7 +179,7 @@ int select_sock_a(struct bpf_sk_lookup *ctx)
 	return err ? SK_DROP : SK_PASS;
 }
 
-SEC("sk_lookup/select_sock_a_no_reuseport")
+SEC("sk_lookup")
 int select_sock_a_no_reuseport(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -205,7 +205,7 @@ int select_sock_b(struct sk_reuseport_md *ctx)
 }
 
 /* Check that bpf_sk_assign() returns -EEXIST if socket already selected. */
-SEC("sk_lookup/sk_assign_eexist")
+SEC("sk_lookup")
 int sk_assign_eexist(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -238,7 +238,7 @@ out:
 }
 
 /* Check that bpf_sk_assign(BPF_SK_LOOKUP_F_REPLACE) can override selection. */
-SEC("sk_lookup/sk_assign_replace_flag")
+SEC("sk_lookup")
 int sk_assign_replace_flag(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -270,7 +270,7 @@ out:
 }
 
 /* Check that bpf_sk_assign(sk=NULL) is accepted. */
-SEC("sk_lookup/sk_assign_null")
+SEC("sk_lookup")
 int sk_assign_null(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk = NULL;
@@ -313,7 +313,7 @@ out:
 }
 
 /* Check that selected sk is accessible through context. */
-SEC("sk_lookup/access_ctx_sk")
+SEC("sk_lookup")
 int access_ctx_sk(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk1 = NULL, *sk2 = NULL;
@@ -379,7 +379,7 @@ out:
  * are not covered because they give bogus results, that is the
  * verifier ignores the offset.
  */
-SEC("sk_lookup/ctx_narrow_access")
+SEC("sk_lookup")
 int ctx_narrow_access(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -553,7 +553,7 @@ int ctx_narrow_access(struct bpf_sk_lookup *ctx)
 }
 
 /* Check that sk_assign rejects SERVER_A socket with -ESOCKNOSUPPORT */
-SEC("sk_lookup/sk_assign_esocknosupport")
+SEC("sk_lookup")
 int sk_assign_esocknosupport(struct bpf_sk_lookup *ctx)
 {
 	struct bpf_sock *sk;
@@ -578,28 +578,28 @@ out:
 	return ret;
 }
 
-SEC("sk_lookup/multi_prog_pass1")
+SEC("sk_lookup")
 int multi_prog_pass1(struct bpf_sk_lookup *ctx)
 {
 	bpf_map_update_elem(&run_map, &KEY_PROG1, &PROG_DONE, BPF_ANY);
 	return SK_PASS;
 }
 
-SEC("sk_lookup/multi_prog_pass2")
+SEC("sk_lookup")
 int multi_prog_pass2(struct bpf_sk_lookup *ctx)
 {
 	bpf_map_update_elem(&run_map, &KEY_PROG2, &PROG_DONE, BPF_ANY);
 	return SK_PASS;
 }
 
-SEC("sk_lookup/multi_prog_drop1")
+SEC("sk_lookup")
 int multi_prog_drop1(struct bpf_sk_lookup *ctx)
 {
 	bpf_map_update_elem(&run_map, &KEY_PROG1, &PROG_DONE, BPF_ANY);
 	return SK_DROP;
 }
 
-SEC("sk_lookup/multi_prog_drop2")
+SEC("sk_lookup")
 int multi_prog_drop2(struct bpf_sk_lookup *ctx)
 {
 	bpf_map_update_elem(&run_map, &KEY_PROG2, &PROG_DONE, BPF_ANY);
@@ -623,7 +623,7 @@ static __always_inline int select_server_a(struct bpf_sk_lookup *ctx)
 	return SK_PASS;
 }
 
-SEC("sk_lookup/multi_prog_redir1")
+SEC("sk_lookup")
 int multi_prog_redir1(struct bpf_sk_lookup *ctx)
 {
 	int ret;
@@ -633,7 +633,7 @@ int multi_prog_redir1(struct bpf_sk_lookup *ctx)
 	return SK_PASS;
 }
 
-SEC("sk_lookup/multi_prog_redir2")
+SEC("sk_lookup")
 int multi_prog_redir2(struct bpf_sk_lookup *ctx)
 {
 	int ret;
-- 
cgit v1.2.3


From 38261f369fb905552ebdd3feb9699c0788fd3371 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Tue, 28 Sep 2021 20:30:00 -0700
Subject: selftests/bpf: Fix probe_user test failure with clang build kernel

clang build kernel failed the selftest probe_user.
  $ ./test_progs -t probe_user
  $ ...
  $ test_probe_user:PASS:get_kprobe_res 0 nsec
  $ test_probe_user:FAIL:check_kprobe_res wrong kprobe res from probe read: 0.0.0.0:0
  $ #94 probe_user:FAIL

The test attached to kernel function __sys_connect(). In net/socket.c, we have
  int __sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen)
  {
        ......
  }
  ...
  SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr,
                  int, addrlen)
  {
        return __sys_connect(fd, uservaddr, addrlen);
  }

The gcc compiler (8.5.0) does not inline __sys_connect() in syscall entry
function. But latest clang trunk did the inlining. So the bpf program
is not triggered.

To make the test more reliable, let us kprobe the syscall entry function
instead. Note that x86_64, arm64 and s390 have syscall wrappers and they have
to be handled specially.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210929033000.3711921-1-yhs@fb.com
---
 .../testing/selftests/bpf/prog_tests/probe_user.c  |  4 ++--
 .../testing/selftests/bpf/progs/test_probe_user.c  | 28 ++++++++++++++++++++--
 2 files changed, 28 insertions(+), 4 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/probe_user.c b/tools/testing/selftests/bpf/prog_tests/probe_user.c
index 95bd12097358..52fe157e2a90 100644
--- a/tools/testing/selftests/bpf/prog_tests/probe_user.c
+++ b/tools/testing/selftests/bpf/prog_tests/probe_user.c
@@ -3,7 +3,7 @@
 
 void test_probe_user(void)
 {
-	const char *prog_name = "kprobe/__sys_connect";
+	const char *prog_name = "handle_sys_connect";
 	const char *obj_file = "./test_probe_user.o";
 	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, opts, );
 	int err, results_map_fd, sock_fd, duration = 0;
@@ -18,7 +18,7 @@ void test_probe_user(void)
 	if (!ASSERT_OK_PTR(obj, "obj_open_file"))
 		return;
 
-	kprobe_prog = bpf_object__find_program_by_title(obj, prog_name);
+	kprobe_prog = bpf_object__find_program_by_name(obj, prog_name);
 	if (CHECK(!kprobe_prog, "find_probe",
 		  "prog '%s' not found\n", prog_name))
 		goto cleanup;
diff --git a/tools/testing/selftests/bpf/progs/test_probe_user.c b/tools/testing/selftests/bpf/progs/test_probe_user.c
index 89b3532ccc75..8812a90da4eb 100644
--- a/tools/testing/selftests/bpf/progs/test_probe_user.c
+++ b/tools/testing/selftests/bpf/progs/test_probe_user.c
@@ -8,13 +8,37 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
 
+#if defined(__TARGET_ARCH_x86)
+#define SYSCALL_WRAPPER 1
+#define SYS_PREFIX "__x64_"
+#elif defined(__TARGET_ARCH_s390)
+#define SYSCALL_WRAPPER 1
+#define SYS_PREFIX "__s390x_"
+#elif defined(__TARGET_ARCH_arm64)
+#define SYSCALL_WRAPPER 1
+#define SYS_PREFIX "__arm64_"
+#else
+#define SYSCALL_WRAPPER 0
+#define SYS_PREFIX ""
+#endif
+
 static struct sockaddr_in old;
 
-SEC("kprobe/__sys_connect")
+SEC("kprobe/" SYS_PREFIX "sys_connect")
 int BPF_KPROBE(handle_sys_connect)
 {
-	void *ptr = (void *)PT_REGS_PARM2(ctx);
+#if SYSCALL_WRAPPER == 1
+	struct pt_regs *real_regs;
+#endif
 	struct sockaddr_in new;
+	void *ptr;
+
+#if SYSCALL_WRAPPER == 0
+	ptr = (void *)PT_REGS_PARM2(ctx);
+#else
+	real_regs = (struct pt_regs *)PT_REGS_PARM1(ctx);
+	bpf_probe_read_kernel(&ptr, sizeof(ptr), &PT_REGS_PARM2(real_regs));
+#endif
 
 	bpf_probe_read_user(&old, sizeof(old), ptr);
 	__builtin_memset(&new, 0xab, sizeof(new));
-- 
cgit v1.2.3


From e31eec77e4ab90dcec7d2da93415f839098dc287 Mon Sep 17 00:00:00 2001
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Date: Mon, 27 Sep 2021 20:29:40 +0530
Subject: bpf: selftests: Fix fd cleanup in get_branch_snapshot

Cleanup code uses while (cpu++ < cpu_cnt) for closing fds, which means
it starts iterating from 1 for closing fds. If the first fd is -1, it
skips over it and closes garbage fds (typically zero) in the remaining
array. This leads to test failures for future tests when they end up
storing fd 0 (as the slot becomes free due to close(0)) in ldimm64's BTF
fd, ending up trying to match module BTF id with vmlinux.

This was observed as spurious CI failure for the ksym_module_libbpf and
module_attach tests. The test ends up closing fd 0 and breaking libbpf's
assumption that module BTF fd will always be > 0, which leads to the
kernel thinking that we are pointing to a BTF ID in vmlinux BTF.

Fixes: 025bd7c753aa (selftests/bpf: Add test for bpf_get_branch_snapshot)
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20210927145941.1383001-12-memxor@gmail.com
---
 tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
index f81db9135ae4..67e86f8d8677 100644
--- a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
+++ b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
@@ -38,10 +38,9 @@ static int create_perf_events(void)
 
 static void close_perf_events(void)
 {
-	int cpu = 0;
-	int fd;
+	int cpu, fd;
 
-	while (cpu++ < cpu_cnt) {
+	for (cpu = 0; cpu < cpu_cnt; cpu++) {
 		fd = pfd_array[cpu];
 		if (fd < 0)
 			break;
-- 
cgit v1.2.3


From d4b6f87e8d3929d3d1594fca0256299113301fd7 Mon Sep 17 00:00:00 2001
From: Po-Hsu Lin <po-hsu.lin@canonical.com>
Date: Wed, 29 Sep 2021 13:12:50 +0800
Subject: selftests/bpf: Use kselftest skip code for skipped tests

There are several test cases in the bpf directory are still using
exit 0 when they need to be skipped. Use kselftest framework skip
code instead so it can help us to distinguish the return status.

Criterion to filter out what should be fixed in bpf directory:
  grep -r "exit 0" -B1 | grep -i skip

This change might cause some false-positives if people are running
these test scripts directly and only checking their return codes,
which will change from 0 to 4. However I think the impact should be
small as most of our scripts here are already using this skip code.
And there will be no such issue if running them with the kselftest
framework.

Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210929051250.13831-1-po-hsu.lin@canonical.com
---
 tools/testing/selftests/bpf/test_xdp_meta.sh | 5 ++++-
 tools/testing/selftests/bpf/test_xdp_vlan.sh | 7 +++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_xdp_meta.sh b/tools/testing/selftests/bpf/test_xdp_meta.sh
index 637fcf4fe4e3..d10cefd6eb09 100755
--- a/tools/testing/selftests/bpf/test_xdp_meta.sh
+++ b/tools/testing/selftests/bpf/test_xdp_meta.sh
@@ -1,5 +1,8 @@
 #!/bin/sh
 
+# Kselftest framework requirement - SKIP code is 4.
+readonly KSFT_SKIP=4
+
 cleanup()
 {
 	if [ "$?" = "0" ]; then
@@ -17,7 +20,7 @@ cleanup()
 ip link set dev lo xdp off 2>/dev/null > /dev/null
 if [ $? -ne 0 ];then
 	echo "selftests: [SKIP] Could not run test without the ip xdp support"
-	exit 0
+	exit $KSFT_SKIP
 fi
 set -e
 
diff --git a/tools/testing/selftests/bpf/test_xdp_vlan.sh b/tools/testing/selftests/bpf/test_xdp_vlan.sh
index bb8b0da91686..0cbc7604a2f8 100755
--- a/tools/testing/selftests/bpf/test_xdp_vlan.sh
+++ b/tools/testing/selftests/bpf/test_xdp_vlan.sh
@@ -2,6 +2,9 @@
 # SPDX-License-Identifier: GPL-2.0
 # Author: Jesper Dangaard Brouer <hawk@kernel.org>
 
+# Kselftest framework requirement - SKIP code is 4.
+readonly KSFT_SKIP=4
+
 # Allow wrapper scripts to name test
 if [ -z "$TESTNAME" ]; then
     TESTNAME=xdp_vlan
@@ -94,7 +97,7 @@ while true; do
 	    -h | --help )
 		usage;
 		echo "selftests: $TESTNAME [SKIP] usage help info requested"
-		exit 0
+		exit $KSFT_SKIP
 		;;
 	    * )
 		shift
@@ -117,7 +120,7 @@ fi
 ip link set dev lo xdpgeneric off 2>/dev/null > /dev/null
 if [ $? -ne 0 ]; then
 	echo "selftests: $TESTNAME [SKIP] need ip xdp support"
-	exit 0
+	exit $KSFT_SKIP
 fi
 
 # Interactive mode likely require us to cleanup netns
-- 
cgit v1.2.3


From bd368cb554d685c60e65ab799bf238663c682105 Mon Sep 17 00:00:00 2001
From: Hengqi Chen <hengqi.chen@gmail.com>
Date: Fri, 1 Oct 2021 00:14:56 +0800
Subject: selftests/bpf: Use BTF-defined key/value for map definitions

Change map definitions in BPF selftests to use BTF-defined
key/value types. This unifies the map definitions and ensures
libbpf won't emit warning about retrying map creation.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210930161456.3444544-3-hengqi.chen@gmail.com
---
 tools/testing/selftests/bpf/progs/kfree_skb.c              |  4 ++--
 tools/testing/selftests/bpf/progs/perf_event_stackmap.c    |  4 ++--
 tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c   | 12 ++++++------
 tools/testing/selftests/bpf/progs/test_btf_map_in_map.c    | 14 +++++++-------
 tools/testing/selftests/bpf/progs/test_map_in_map.c        | 10 ++++------
 .../testing/selftests/bpf/progs/test_map_in_map_invalid.c  |  2 +-
 tools/testing/selftests/bpf/progs/test_pe_preserve_elems.c |  8 ++++----
 tools/testing/selftests/bpf/progs/test_perf_buffer.c       |  4 ++--
 .../selftests/bpf/progs/test_select_reuseport_kern.c       |  4 ++--
 .../testing/selftests/bpf/progs/test_stacktrace_build_id.c |  4 ++--
 tools/testing/selftests/bpf/progs/test_stacktrace_map.c    |  4 ++--
 tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c    |  4 ++--
 tools/testing/selftests/bpf/progs/test_xdp_bpf2bpf.c       |  4 ++--
 13 files changed, 38 insertions(+), 40 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/kfree_skb.c b/tools/testing/selftests/bpf/progs/kfree_skb.c
index 55e283050cab..7236da72ce80 100644
--- a/tools/testing/selftests/bpf/progs/kfree_skb.c
+++ b/tools/testing/selftests/bpf/progs/kfree_skb.c
@@ -9,8 +9,8 @@
 char _license[] SEC("license") = "GPL";
 struct {
 	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 } perf_buf_map SEC(".maps");
 
 #define _(P) (__builtin_preserve_access_index(P))
diff --git a/tools/testing/selftests/bpf/progs/perf_event_stackmap.c b/tools/testing/selftests/bpf/progs/perf_event_stackmap.c
index 25467d13c356..b3fcb5274ee0 100644
--- a/tools/testing/selftests/bpf/progs/perf_event_stackmap.c
+++ b/tools/testing/selftests/bpf/progs/perf_event_stackmap.c
@@ -11,8 +11,8 @@ typedef __u64 stack_trace_t[PERF_MAX_STACK_DEPTH];
 struct {
 	__uint(type, BPF_MAP_TYPE_STACK_TRACE);
 	__uint(max_entries, 16384);
-	__uint(key_size, sizeof(__u32));
-	__uint(value_size, sizeof(stack_trace_t));
+	__type(key, __u32);
+	__type(value, stack_trace_t);
 } stackmap SEC(".maps");
 
 struct {
diff --git a/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c b/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c
index 4797dc985064..73872c535cbb 100644
--- a/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c
+++ b/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c
@@ -7,22 +7,22 @@ int _version SEC("version") = 1;
 struct {
 	__uint(type, BPF_MAP_TYPE_SOCKMAP);
 	__uint(max_entries, 20);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 } sock_map_rx SEC(".maps");
 
 struct {
 	__uint(type, BPF_MAP_TYPE_SOCKMAP);
 	__uint(max_entries, 20);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 } sock_map_tx SEC(".maps");
 
 struct {
 	__uint(type, BPF_MAP_TYPE_SOCKMAP);
 	__uint(max_entries, 20);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 } sock_map_msg SEC(".maps");
 
 struct {
diff --git a/tools/testing/selftests/bpf/progs/test_btf_map_in_map.c b/tools/testing/selftests/bpf/progs/test_btf_map_in_map.c
index c1e0c8c7c55f..c218cf8989a9 100644
--- a/tools/testing/selftests/bpf/progs/test_btf_map_in_map.c
+++ b/tools/testing/selftests/bpf/progs/test_btf_map_in_map.c
@@ -21,8 +21,8 @@ struct inner_map_sz2 {
 struct outer_arr {
 	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
 	__uint(max_entries, 3);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 	/* it's possible to use anonymous struct as inner map definition here */
 	__array(values, struct {
 		__uint(type, BPF_MAP_TYPE_ARRAY);
@@ -61,8 +61,8 @@ struct inner_map_sz4 {
 struct outer_arr_dyn {
 	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
 	__uint(max_entries, 3);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 	__array(values, struct {
 		__uint(type, BPF_MAP_TYPE_ARRAY);
 		__uint(map_flags, BPF_F_INNER_MAP);
@@ -81,7 +81,7 @@ struct outer_arr_dyn {
 struct outer_hash {
 	__uint(type, BPF_MAP_TYPE_HASH_OF_MAPS);
 	__uint(max_entries, 5);
-	__uint(key_size, sizeof(int));
+	__type(key, int);
 	/* Here everything works flawlessly due to reuse of struct inner_map
 	 * and compiler will complain at the attempt to use non-inner_map
 	 * references below. This is great experience.
@@ -111,8 +111,8 @@ struct sockarr_sz2 {
 struct outer_sockarr_sz1 {
 	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
 	__uint(max_entries, 1);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 	__array(values, struct sockarr_sz1);
 } outer_sockarr SEC(".maps") = {
 	.values = { (void *)&sockarr_sz1 },
diff --git a/tools/testing/selftests/bpf/progs/test_map_in_map.c b/tools/testing/selftests/bpf/progs/test_map_in_map.c
index 5f0e0bfc151e..a6d91932dcd5 100644
--- a/tools/testing/selftests/bpf/progs/test_map_in_map.c
+++ b/tools/testing/selftests/bpf/progs/test_map_in_map.c
@@ -9,18 +9,16 @@ struct {
 	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
 	__uint(max_entries, 1);
 	__uint(map_flags, 0);
-	__uint(key_size, sizeof(__u32));
-	/* must be sizeof(__u32) for map in map */
-	__uint(value_size, sizeof(__u32));
+	__type(key, __u32);
+	__type(value, __u32);
 } mim_array SEC(".maps");
 
 struct {
 	__uint(type, BPF_MAP_TYPE_HASH_OF_MAPS);
 	__uint(max_entries, 1);
 	__uint(map_flags, 0);
-	__uint(key_size, sizeof(int));
-	/* must be sizeof(__u32) for map in map */
-	__uint(value_size, sizeof(__u32));
+	__type(key, int);
+	__type(value, __u32);
 } mim_hash SEC(".maps");
 
 SEC("xdp")
diff --git a/tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c b/tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c
index 703c08e06442..9c7d75cf0bd6 100644
--- a/tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c
+++ b/tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c
@@ -13,7 +13,7 @@ struct inner {
 struct {
 	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
 	__uint(max_entries, 0); /* This will make map creation to fail */
-	__uint(key_size, sizeof(__u32));
+	__type(key, __u32);
 	__array(values, struct inner);
 } mim SEC(".maps");
 
diff --git a/tools/testing/selftests/bpf/progs/test_pe_preserve_elems.c b/tools/testing/selftests/bpf/progs/test_pe_preserve_elems.c
index fb22de7c365d..1249a945699f 100644
--- a/tools/testing/selftests/bpf/progs/test_pe_preserve_elems.c
+++ b/tools/testing/selftests/bpf/progs/test_pe_preserve_elems.c
@@ -7,15 +7,15 @@
 struct {
 	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
 	__uint(max_entries, 1);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 } array_1 SEC(".maps");
 
 struct {
 	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
 	__uint(max_entries, 1);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 	__uint(map_flags, BPF_F_PRESERVE_ELEMS);
 } array_2 SEC(".maps");
 
diff --git a/tools/testing/selftests/bpf/progs/test_perf_buffer.c b/tools/testing/selftests/bpf/progs/test_perf_buffer.c
index 8207a2dc2f9d..d37ce29fd393 100644
--- a/tools/testing/selftests/bpf/progs/test_perf_buffer.c
+++ b/tools/testing/selftests/bpf/progs/test_perf_buffer.c
@@ -8,8 +8,8 @@
 
 struct {
 	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 } perf_buf_map SEC(".maps");
 
 SEC("tp/raw_syscalls/sys_enter")
diff --git a/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c b/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
index 26e77dcc7e91..0f9bc258225e 100644
--- a/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
@@ -24,8 +24,8 @@ int _version SEC("version") = 1;
 struct {
 	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
 	__uint(max_entries, 1);
-	__uint(key_size, sizeof(__u32));
-	__uint(value_size, sizeof(__u32));
+	__type(key, __u32);
+	__type(value, __u32);
 } outer_map SEC(".maps");
 
 struct {
diff --git a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
index 0cf0134631b4..7449fdb1763b 100644
--- a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
@@ -28,8 +28,8 @@ struct {
 	__uint(type, BPF_MAP_TYPE_STACK_TRACE);
 	__uint(max_entries, 128);
 	__uint(map_flags, BPF_F_STACK_BUILD_ID);
-	__uint(key_size, sizeof(__u32));
-	__uint(value_size, sizeof(stack_trace_t));
+	__type(key, __u32);
+	__type(value, stack_trace_t);
 } stackmap SEC(".maps");
 
 struct {
diff --git a/tools/testing/selftests/bpf/progs/test_stacktrace_map.c b/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
index 00ed48672620..a8233e7f173b 100644
--- a/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
@@ -27,8 +27,8 @@ typedef __u64 stack_trace_t[PERF_MAX_STACK_DEPTH];
 struct {
 	__uint(type, BPF_MAP_TYPE_STACK_TRACE);
 	__uint(max_entries, 16384);
-	__uint(key_size, sizeof(__u32));
-	__uint(value_size, sizeof(stack_trace_t));
+	__type(key, __u32);
+	__type(value, stack_trace_t);
 } stackmap SEC(".maps");
 
 struct {
diff --git a/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c b/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
index ac63410bb541..24e9344994ef 100644
--- a/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
@@ -24,8 +24,8 @@ struct {
 struct {
 	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
 	__uint(max_entries, 2);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(__u32));
+	__type(key, int);
+	__type(value, __u32);
 } perf_event_map SEC(".maps");
 
 int _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_bpf2bpf.c b/tools/testing/selftests/bpf/progs/test_xdp_bpf2bpf.c
index a038e827f850..58cf4345f5cc 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_bpf2bpf.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_bpf2bpf.c
@@ -36,8 +36,8 @@ struct meta {
 
 struct {
 	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
-	__uint(key_size, sizeof(int));
-	__uint(value_size, sizeof(int));
+	__type(key, int);
+	__type(value, int);
 } perf_buf_map SEC(".maps");
 
 __u64 test_result_fentry = 0;
-- 
cgit v1.2.3


From 239f163ceabb8ee176396476de7d2b6b5261af39 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Fri, 1 Oct 2021 18:15:29 +0300
Subject: selftests: net: mscc: ocelot: bring up the ports automatically

Looks like when I wrote the selftests I was using a network manager that
brought up the ports automatically. In order to not rely on that, let
the script open them up.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh b/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
index f7d84549cc3e..0e19b56effe6 100755
--- a/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
+++ b/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
@@ -156,6 +156,11 @@ create_tcam_skeleton()
 
 setup_prepare()
 {
+	ip link set $eth0 up
+	ip link set $eth1 up
+	ip link set $eth2 up
+	ip link set $eth3 up
+
 	create_tcam_skeleton $eth0
 
 	ip link add br0 type bridge
-- 
cgit v1.2.3


From 4a907f659461908cd546bca083b373f6de20aa24 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Fri, 1 Oct 2021 18:15:30 +0300
Subject: selftests: net: mscc: ocelot: rename the VLAN modification test to
 ingress

There will be one more VLAN modification selftest added, this time for
egress. Rename the one that exists right now to be more specific.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh b/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
index 0e19b56effe6..4711313a92a3 100755
--- a/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
+++ b/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
@@ -247,9 +247,9 @@ test_vlan_push()
 	tcpdump_cleanup
 }
 
-test_vlan_modify()
+test_vlan_ingress_modify()
 {
-	printf "Testing VLAN modification..		"
+	printf "Testing ingress VLAN modification..		"
 
 	ip link set br0 type bridge vlan_filtering 1
 	bridge vlan add dev $eth0 vid 200
@@ -309,7 +309,7 @@ trap cleanup EXIT
 ALL_TESTS="
 	test_vlan_pop
 	test_vlan_push
-	test_vlan_modify
+	test_vlan_ingress_modify
 	test_skbedit_priority
 "
 
-- 
cgit v1.2.3


From 434ef35095d6d9da013d4d8f3777ffd99cce699a Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Fri, 1 Oct 2021 18:15:31 +0300
Subject: selftests: net: mscc: ocelot: add a test for egress VLAN modification

For this test we are exercising the VCAP ES0 block's ability to match on
a packet with a given VLAN ID, and push an ES0 TAG A with a VID derived
from VID_A_VAL plus the classified VLAN.

$eth3.200 is the generator port
$eth0 is the bridged DUT port that receives
$eth1 is the bridged DUT port that forwards and rewrites VID 200 to 300
      on egress via VCAP ES0
$eth2 is the port that receives from the DUT port $eth1

Since the egress rewriting happens outside the bridging service, VID 300
does not need to be in the bridge VLAN table of $eth1.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../drivers/net/ocelot/tc_flower_chains.sh         | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh b/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
index 4711313a92a3..eaf8a04a7ca5 100755
--- a/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
+++ b/tools/testing/selftests/drivers/net/ocelot/tc_flower_chains.sh
@@ -285,6 +285,44 @@ test_vlan_ingress_modify()
 	ip link set br0 type bridge vlan_filtering 0
 }
 
+test_vlan_egress_modify()
+{
+	printf "Testing egress VLAN modification..		"
+
+	tc qdisc add dev $eth1 clsact
+
+	ip link set br0 type bridge vlan_filtering 1
+	bridge vlan add dev $eth0 vid 200
+	bridge vlan add dev $eth1 vid 200
+
+	tc filter add dev $eth1 egress chain $(ES0) pref 3 \
+		protocol 802.1Q flower skip_sw vlan_id 200 vlan_prio 0 \
+		action vlan modify id 300 priority 7
+
+	tcpdump_start $eth2
+
+	$MZ $eth3.200 -q -c 1 -p 64 -a $eth3_mac -b $eth2_mac -t ip
+
+	sleep 1
+
+	tcpdump_stop
+
+	if tcpdump_show | grep -q "$eth3_mac > $eth2_mac, .* vlan 300"; then
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+
+	tcpdump_cleanup
+
+	tc filter del dev $eth1 egress chain $(ES0) pref 3
+	tc qdisc del dev $eth1 clsact
+
+	bridge vlan del dev $eth0 vid 200
+	bridge vlan del dev $eth1 vid 200
+	ip link set br0 type bridge vlan_filtering 0
+}
+
 test_skbedit_priority()
 {
 	local num_pkts=100
@@ -310,6 +348,7 @@ ALL_TESTS="
 	test_vlan_pop
 	test_vlan_push
 	test_vlan_ingress_modify
+	test_vlan_egress_modify
 	test_skbedit_priority
 "
 
-- 
cgit v1.2.3


From bf77b1400a56332819f9358cac52b326d6d49dfd Mon Sep 17 00:00:00 2001
From: Justin Iurman <justin.iurman@uliege.be>
Date: Sun, 3 Oct 2021 20:45:39 +0200
Subject: selftests: net: Test for the IOAM encapsulation with IPv6

This patch adds support for testing the encap (ip6ip6) mode of IOAM.

Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/ioam6.sh | 209 ++++++++++++++++++++++++++---------
 1 file changed, 159 insertions(+), 50 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/ioam6.sh b/tools/testing/selftests/net/ioam6.sh
index 3caf72bb9c6a..90700303d8a9 100755
--- a/tools/testing/selftests/net/ioam6.sh
+++ b/tools/testing/selftests/net/ioam6.sh
@@ -6,7 +6,7 @@
 # This script evaluates the IOAM insertion for IPv6 by checking the IOAM data
 # consistency directly inside packets on the receiver side. Tests are divided
 # into three categories: OUTPUT (evaluates the IOAM processing by the sender),
-# INPUT (evaluates the IOAM processing by the receiver) and GLOBAL (evaluates
+# INPUT (evaluates the IOAM processing by a receiver) and GLOBAL (evaluates
 # wider use cases that do not fall into the other two categories). Both OUTPUT
 # and INPUT tests only use a two-node topology (alpha and beta), while GLOBAL
 # tests use the entire three-node topology (alpha, beta, gamma). Each test is
@@ -200,7 +200,7 @@ check_kernel_compatibility()
   ip -netns ioam-tmp-node link set veth0 up
   ip -netns ioam-tmp-node link set veth1 up
 
-  ip -netns ioam-tmp-node ioam namespace add 0 &>/dev/null
+  ip -netns ioam-tmp-node ioam namespace add 0
   ns_ad=$?
 
   ip -netns ioam-tmp-node ioam namespace show | grep -q "namespace 0"
@@ -214,11 +214,11 @@ check_kernel_compatibility()
     exit 1
   fi
 
-  ip -netns ioam-tmp-node route add db02::/64 encap ioam6 trace prealloc \
-         type 0x800000 ns 0 size 4 dev veth0 &>/dev/null
+  ip -netns ioam-tmp-node route add db02::/64 encap ioam6 mode inline \
+         trace prealloc type 0x800000 ns 0 size 4 dev veth0
   tr_ad=$?
 
-  ip -netns ioam-tmp-node -6 route | grep -q "encap ioam6 trace"
+  ip -netns ioam-tmp-node -6 route | grep -q "encap ioam6"
   tr_sh=$?
 
   if [[ $tr_ad != 0 || $tr_sh != 0 ]]
@@ -232,6 +232,30 @@ check_kernel_compatibility()
 
   ip link del veth0 2>/dev/null || true
   ip netns del ioam-tmp-node || true
+
+  lsmod | grep -q "ip6_tunnel"
+  ip6tnl_loaded=$?
+
+  if [ $ip6tnl_loaded = 0 ]
+  then
+    encap_tests=0
+  else
+    modprobe ip6_tunnel &>/dev/null
+    lsmod | grep -q "ip6_tunnel"
+    encap_tests=$?
+
+    if [ $encap_tests != 0 ]
+    then
+      ip a | grep -q "ip6tnl0"
+      encap_tests=$?
+
+      if [ $encap_tests != 0 ]
+      then
+        echo "Note: ip6_tunnel not found neither as a module nor inside the" \
+             "kernel, tests that require it (encap mode) will be omitted"
+      fi
+    fi
+  fi
 }
 
 cleanup()
@@ -242,6 +266,11 @@ cleanup()
   ip netns del ioam-node-alpha || true
   ip netns del ioam-node-beta || true
   ip netns del ioam-node-gamma || true
+
+  if [ $ip6tnl_loaded != 0 ]
+  then
+    modprobe -r ip6_tunnel 2>/dev/null || true
+  fi
 }
 
 setup()
@@ -329,6 +358,12 @@ log_test_failed()
   printf "TEST: %-60s  [FAIL]\n" "${desc}"
 }
 
+log_results()
+{
+  echo "- Tests passed: ${npassed}"
+  echo "- Tests failed: ${nfailed}"
+}
+
 run_test()
 {
   local name=$1
@@ -349,16 +384,26 @@ run_test()
   ip netns exec $node_src ping6 -t 64 -c 1 -W 1 $ip6_dst &>/dev/null
   if [ $? != 0 ]
   then
+    nfailed=$((nfailed+1))
     log_test_failed "${desc}"
     kill -2 $spid &>/dev/null
   else
     wait $spid
-    [ $? = 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}"
+    if [ $? = 0 ]
+    then
+      npassed=$((npassed+1))
+      log_test_passed "${desc}"
+    else
+      nfailed=$((nfailed+1))
+      log_test_failed "${desc}"
+    fi
   fi
 }
 
 run()
 {
+  echo
+  printf "%0.s-" {1..74}
   echo
   echo "OUTPUT tests"
   printf "%0.s-" {1..74}
@@ -369,7 +414,8 @@ run()
 
   for t in $TESTS_OUTPUT
   do
-    $t
+    $t "inline"
+    [ $encap_tests = 0 ] && $t "encap"
   done
 
   # clean OUTPUT settings
@@ -377,6 +423,8 @@ run()
   ip -netns ioam-node-alpha route change db01::/64 dev veth0
 
 
+  echo
+  printf "%0.s-" {1..74}
   echo
   echo "INPUT tests"
   printf "%0.s-" {1..74}
@@ -387,7 +435,8 @@ run()
 
   for t in $TESTS_INPUT
   do
-    $t
+    $t "inline"
+    [ $encap_tests = 0 ] && $t "encap"
   done
 
   # clean INPUT settings
@@ -396,7 +445,8 @@ run()
   ip -netns ioam-node-alpha ioam namespace set 123 schema ${ALPHA[8]}
   ip -netns ioam-node-alpha route change db01::/64 dev veth0
 
-
+  echo
+  printf "%0.s-" {1..74}
   echo
   echo "GLOBAL tests"
   printf "%0.s-" {1..74}
@@ -404,8 +454,12 @@ run()
 
   for t in $TESTS_GLOBAL
   do
-    $t
+    $t "inline"
+    [ $encap_tests = 0 ] && $t "encap"
   done
+
+  echo
+  log_results
 }
 
 bit2type=(
@@ -431,11 +485,16 @@ out_undef_ns()
   ##############################################################################
   local desc="Unknown IOAM namespace"
 
-  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
-         type 0x800000 ns 0 size 4 dev veth0
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+         trace prealloc type 0x800000 ns 0 size 4 dev veth0
 
-  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
-         db01::1 veth0 0x800000 0
+  run_test ${FUNCNAME[0]} "${desc} ($1 mode)" ioam-node-alpha ioam-node-beta \
+         db01::2 db01::1 veth0 0x800000 0
+
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
 }
 
 out_no_room()
@@ -446,11 +505,16 @@ out_no_room()
   ##############################################################################
   local desc="Missing trace room"
 
-  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
-         type 0xc00000 ns 123 size 4 dev veth0
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+         trace prealloc type 0xc00000 ns 123 size 4 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc} ($1 mode)" ioam-node-alpha ioam-node-beta \
+         db01::2 db01::1 veth0 0xc00000 123
 
-  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
-         db01::1 veth0 0xc00000 123
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
 }
 
 out_bits()
@@ -465,15 +529,21 @@ out_bits()
   local tmp=${bit2size[22]}
   bit2size[22]=$(( $tmp + ${#ALPHA[9]} + ((4 - (${#ALPHA[9]} % 4)) % 4) ))
 
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
+
   for i in {0..22}
   do
-    ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace \
-           prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} dev veth0
+    ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+           trace prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} \
+           dev veth0
 
-    run_test "out_bit$i" "${desc/<n>/$i}" ioam-node-alpha ioam-node-beta \
-           db01::2 db01::1 veth0 ${bit2type[$i]} 123
+    run_test "out_bit$i" "${desc/<n>/$i} ($1 mode)" ioam-node-alpha \
+           ioam-node-beta db01::2 db01::1 veth0 ${bit2type[$i]} 123
   done
 
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
+
   bit2size[22]=$tmp
 }
 
@@ -485,11 +555,16 @@ out_full_supp_trace()
   ##############################################################################
   local desc="Full supported trace"
 
-  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
-         type 0xfff002 ns 123 size 100 dev veth0
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
 
-  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
-         db01::1 veth0 0xfff002 123
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+         trace prealloc type 0xfff002 ns 123 size 100 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc} ($1 mode)" ioam-node-alpha ioam-node-beta \
+         db01::2 db01::1 veth0 0xfff002 123
+
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
 }
 
 
@@ -510,11 +585,16 @@ in_undef_ns()
   ##############################################################################
   local desc="Unknown IOAM namespace"
 
-  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
-         type 0x800000 ns 0 size 4 dev veth0
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+         trace prealloc type 0x800000 ns 0 size 4 dev veth0
 
-  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
-         db01::1 veth0 0x800000 0
+  run_test ${FUNCNAME[0]} "${desc} ($1 mode)" ioam-node-alpha ioam-node-beta \
+         db01::2 db01::1 veth0 0x800000 0
+
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
 }
 
 in_no_room()
@@ -525,11 +605,16 @@ in_no_room()
   ##############################################################################
   local desc="Missing trace room"
 
-  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
-         type 0xc00000 ns 123 size 4 dev veth0
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+         trace prealloc type 0xc00000 ns 123 size 4 dev veth0
 
-  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
-         db01::1 veth0 0xc00000 123
+  run_test ${FUNCNAME[0]} "${desc} ($1 mode)" ioam-node-alpha ioam-node-beta \
+         db01::2 db01::1 veth0 0xc00000 123
+
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
 }
 
 in_bits()
@@ -544,15 +629,21 @@ in_bits()
   local tmp=${bit2size[22]}
   bit2size[22]=$(( $tmp + ${#BETA[9]} + ((4 - (${#BETA[9]} % 4)) % 4) ))
 
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
+
   for i in {0..22}
   do
-    ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace \
-           prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} dev veth0
+    ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+           trace prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} \
+           dev veth0
 
-    run_test "in_bit$i" "${desc/<n>/$i}" ioam-node-alpha ioam-node-beta \
-           db01::2 db01::1 veth0 ${bit2type[$i]} 123
+    run_test "in_bit$i" "${desc/<n>/$i} ($1 mode)" ioam-node-alpha \
+           ioam-node-beta db01::2 db01::1 veth0 ${bit2type[$i]} 123
   done
 
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
+
   bit2size[22]=$tmp
 }
 
@@ -569,11 +660,16 @@ in_oflag()
   #   back the IOAM namespace that was previously configured on the sender.
   ip -netns ioam-node-alpha ioam namespace add 123
 
-  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
-         type 0xc00000 ns 123 size 4 dev veth0
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+         trace prealloc type 0xc00000 ns 123 size 4 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc} ($1 mode)" ioam-node-alpha ioam-node-beta \
+         db01::2 db01::1 veth0 0xc00000 123
 
-  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
-         db01::1 veth0 0xc00000 123
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
 
   # And we clean the exception for this test to get things back to normal for
   # other INPUT tests
@@ -588,11 +684,16 @@ in_full_supp_trace()
   ##############################################################################
   local desc="Full supported trace"
 
-  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
-         type 0xfff002 ns 123 size 80 dev veth0
+  [ "$1" = "encap" ] && mode="$1 tundst db01::1" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 up
 
-  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
-         db01::1 veth0 0xfff002 123
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 mode $mode \
+         trace prealloc type 0xfff002 ns 123 size 80 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc} ($1 mode)" ioam-node-alpha ioam-node-beta \
+         db01::2 db01::1 veth0 0xfff002 123
+
+  [ "$1" = "encap" ] && ip -netns ioam-node-beta link set ip6tnl0 down
 }
 
 
@@ -611,11 +712,16 @@ fwd_full_supp_trace()
   ##############################################################################
   local desc="Forward - Full supported trace"
 
-  ip -netns ioam-node-alpha route change db02::/64 encap ioam6 trace prealloc \
-         type 0xfff002 ns 123 size 244 via db01::1 dev veth0
+  [ "$1" = "encap" ] && mode="$1 tundst db02::2" || mode="$1"
+  [ "$1" = "encap" ] && ip -netns ioam-node-gamma link set ip6tnl0 up
+
+  ip -netns ioam-node-alpha route change db02::/64 encap ioam6 mode $mode \
+         trace prealloc type 0xfff002 ns 123 size 244 via db01::1 dev veth0
 
-  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-gamma db01::2 \
-         db02::2 veth0 0xfff002 123
+  run_test ${FUNCNAME[0]} "${desc} ($1 mode)" ioam-node-alpha ioam-node-gamma \
+         db01::2 db02::2 veth0 0xfff002 123
+
+  [ "$1" = "encap" ] && ip -netns ioam-node-gamma link set ip6tnl0 down
 }
 
 
@@ -625,6 +731,9 @@ fwd_full_supp_trace()
 #                                                                              #
 ################################################################################
 
+npassed=0
+nfailed=0
+
 if [ "$(id -u)" -ne 0 ]
 then
   echo "SKIP: Need root privileges"
-- 
cgit v1.2.3


From f614f2c755b6125c646d680d1c990b3b262bd0a9 Mon Sep 17 00:00:00 2001
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Date: Sat, 2 Oct 2021 06:47:52 +0530
Subject: tools: Allow specifying base BTF file in resolve_btfids

This commit allows specifying the base BTF for resolving btf id
lists/sets during link time in the resolve_btfids tool. The base BTF is
set to NULL if no path is passed. This allows resolving BTF ids for
module kernel objects.

Also, drop the --no-fail option, as it is only used in case .BTF_ids
section is not present, instead make no-fail the default mode. The long
option name is same as that of pahole.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211002011757.311265-5-memxor@gmail.com
---
 tools/bpf/resolve_btfids/main.c      | 28 +++++++++++++++++++---------
 tools/testing/selftests/bpf/Makefile |  2 +-
 2 files changed, 20 insertions(+), 10 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c
index de6365b53c9c..c6c3e613858a 100644
--- a/tools/bpf/resolve_btfids/main.c
+++ b/tools/bpf/resolve_btfids/main.c
@@ -89,6 +89,7 @@ struct btf_id {
 struct object {
 	const char *path;
 	const char *btf;
+	const char *base_btf_path;
 
 	struct {
 		int		 fd;
@@ -477,16 +478,27 @@ static int symbols_resolve(struct object *obj)
 	int nr_structs  = obj->nr_structs;
 	int nr_unions   = obj->nr_unions;
 	int nr_funcs    = obj->nr_funcs;
+	struct btf *base_btf = NULL;
 	int err, type_id;
 	struct btf *btf;
 	__u32 nr_types;
 
-	btf = btf__parse(obj->btf ?: obj->path, NULL);
+	if (obj->base_btf_path) {
+		base_btf = btf__parse(obj->base_btf_path, NULL);
+		err = libbpf_get_error(base_btf);
+		if (err) {
+			pr_err("FAILED: load base BTF from %s: %s\n",
+			       obj->base_btf_path, strerror(-err));
+			return -1;
+		}
+	}
+
+	btf = btf__parse_split(obj->btf ?: obj->path, base_btf);
 	err = libbpf_get_error(btf);
 	if (err) {
 		pr_err("FAILED: load BTF from %s: %s\n",
 			obj->btf ?: obj->path, strerror(-err));
-		return -1;
+		goto out;
 	}
 
 	err = -1;
@@ -545,6 +557,7 @@ static int symbols_resolve(struct object *obj)
 
 	err = 0;
 out:
+	btf__free(base_btf);
 	btf__free(btf);
 	return err;
 }
@@ -678,7 +691,6 @@ static const char * const resolve_btfids_usage[] = {
 
 int main(int argc, const char **argv)
 {
-	bool no_fail = false;
 	struct object obj = {
 		.efile = {
 			.idlist_shndx  = -1,
@@ -695,8 +707,8 @@ int main(int argc, const char **argv)
 			 "be more verbose (show errors, etc)"),
 		OPT_STRING(0, "btf", &obj.btf, "BTF data",
 			   "BTF data"),
-		OPT_BOOLEAN(0, "no-fail", &no_fail,
-			   "do not fail if " BTF_IDS_SECTION " section is not found"),
+		OPT_STRING('b', "btf_base", &obj.base_btf_path, "file",
+			   "path of file providing base BTF"),
 		OPT_END()
 	};
 	int err = -1;
@@ -717,10 +729,8 @@ int main(int argc, const char **argv)
 	 */
 	if (obj.efile.idlist_shndx == -1 ||
 	    obj.efile.symbols_shndx == -1) {
-		if (no_fail)
-			return 0;
-		pr_err("FAILED to find needed sections\n");
-		return -1;
+		pr_debug("Cannot find .BTF_ids or symbols sections, nothing to do\n");
+		return 0;
 	}
 
 	if (symbols_collect(&obj))
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index aa94739a1835..5a94d0900d1b 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -454,7 +454,7 @@ $(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS)			\
 			     | $(TRUNNER_BINARY)-extras
 	$$(call msg,BINARY,,$$@)
 	$(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
-	$(Q)$(RESOLVE_BTFIDS) --no-fail --btf $(TRUNNER_OUTPUT)/btf_data.o $$@
+	$(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.o $$@
 
 endef
 
-- 
cgit v1.2.3


From c48e51c8b07aba8a18125221cb67a40cb1256bf2 Mon Sep 17 00:00:00 2001
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Date: Sat, 2 Oct 2021 06:47:57 +0530
Subject: bpf: selftests: Add selftests for module kfunc support

This adds selftests that tests the success and failure path for modules
kfuncs (in presence of invalid kfunc calls) for both libbpf and
gen_loader. It also adds a prog_test kfunc_btf_id_list so that we can
add module BTF ID set from bpf_testmod.

This also introduces  a couple of test cases to verifier selftests for
validating whether we get an error or not depending on if invalid kfunc
call remains after elimination of unreachable instructions.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211002011757.311265-10-memxor@gmail.com
---
 include/linux/btf.h                                |  1 +
 kernel/bpf/btf.c                                   |  1 +
 net/bpf/test_run.c                                 |  5 ++-
 tools/testing/selftests/bpf/Makefile               |  7 ++--
 .../selftests/bpf/bpf_testmod/bpf_testmod.c        | 23 ++++++++++-
 .../selftests/bpf/prog_tests/ksyms_module.c        | 29 +++++++-------
 .../selftests/bpf/prog_tests/ksyms_module_libbpf.c | 28 +++++++++++++
 .../selftests/bpf/progs/test_ksyms_module.c        | 46 ++++++++++++++++------
 tools/testing/selftests/bpf/verifier/calls.c       | 23 +++++++++++
 9 files changed, 132 insertions(+), 31 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/ksyms_module_libbpf.c

(limited to 'tools/testing')

diff --git a/include/linux/btf.h b/include/linux/btf.h
index 1d56cd2bb362..203eef993d76 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -275,5 +275,6 @@ static inline bool bpf_check_mod_kfunc_call(struct kfunc_btf_id_list *klist,
 					 THIS_MODULE }
 
 extern struct kfunc_btf_id_list bpf_tcp_ca_kfunc_list;
+extern struct kfunc_btf_id_list prog_test_kfunc_list;
 
 #endif
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 1460dff3c154..2ebffb9f57eb 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -6397,3 +6397,4 @@ bool bpf_check_mod_kfunc_call(struct kfunc_btf_id_list *klist, u32 kfunc_id,
 	EXPORT_SYMBOL_GPL(name)
 
 DEFINE_KFUNC_BTF_ID_LIST(bpf_tcp_ca_kfunc_list);
+DEFINE_KFUNC_BTF_ID_LIST(prog_test_kfunc_list);
diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index b1f6f5237de6..529608784aa8 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -2,6 +2,7 @@
 /* Copyright (c) 2017 Facebook
  */
 #include <linux/bpf.h>
+#include <linux/btf.h>
 #include <linux/btf_ids.h>
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
@@ -243,7 +244,9 @@ BTF_SET_END(test_sk_kfunc_ids)
 
 bool bpf_prog_test_check_kfunc_call(u32 kfunc_id, struct module *owner)
 {
-	return btf_id_set_contains(&test_sk_kfunc_ids, kfunc_id);
+	if (btf_id_set_contains(&test_sk_kfunc_ids, kfunc_id))
+		return true;
+	return bpf_check_mod_kfunc_call(&prog_test_kfunc_list, kfunc_id, owner);
 }
 
 static void *bpf_test_init(const union bpf_attr *kattr, u32 size,
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 5a94d0900d1b..c5c9a9f50d8d 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -315,8 +315,9 @@ LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h		\
 		linked_vars.skel.h linked_maps.skel.h
 
 LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
-	test_ksyms_module.c test_ringbuf.c atomics.c trace_printk.c \
-	trace_vprintk.c
+	test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c
+# Generate both light skeleton and libbpf skeleton for these
+LSKELS_EXTRA := test_ksyms_module.c
 SKEL_BLACKLIST += $$(LSKELS)
 
 test_static_linked.skel.h-deps := test_static_linked1.o test_static_linked2.o
@@ -346,7 +347,7 @@ TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS)
 TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h,	\
 				 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
 					       $$(TRUNNER_BPF_SRCS)))
-TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS))
+TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
 TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
 TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
 
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
index 50fc5561110a..b892948dc134 100644
--- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
+++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
@@ -1,5 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /* Copyright (c) 2020 Facebook */
+#include <linux/btf.h>
+#include <linux/btf_ids.h>
 #include <linux/error-injection.h>
 #include <linux/init.h>
 #include <linux/module.h>
@@ -13,6 +15,12 @@
 
 DEFINE_PER_CPU(int, bpf_testmod_ksym_percpu) = 123;
 
+noinline void
+bpf_testmod_test_mod_kfunc(int i)
+{
+	*(int *)this_cpu_ptr(&bpf_testmod_ksym_percpu) = i;
+}
+
 noinline int bpf_testmod_loop_test(int n)
 {
 	int i, sum = 0;
@@ -71,13 +79,26 @@ static struct bin_attribute bin_attr_bpf_testmod_file __ro_after_init = {
 	.write = bpf_testmod_test_write,
 };
 
+BTF_SET_START(bpf_testmod_kfunc_ids)
+BTF_ID(func, bpf_testmod_test_mod_kfunc)
+BTF_SET_END(bpf_testmod_kfunc_ids)
+
+static DEFINE_KFUNC_BTF_ID_SET(&bpf_testmod_kfunc_ids, bpf_testmod_kfunc_btf_set);
+
 static int bpf_testmod_init(void)
 {
-	return sysfs_create_bin_file(kernel_kobj, &bin_attr_bpf_testmod_file);
+	int ret;
+
+	ret = sysfs_create_bin_file(kernel_kobj, &bin_attr_bpf_testmod_file);
+	if (ret)
+		return ret;
+	register_kfunc_btf_id_set(&prog_test_kfunc_list, &bpf_testmod_kfunc_btf_set);
+	return 0;
 }
 
 static void bpf_testmod_exit(void)
 {
+	unregister_kfunc_btf_id_set(&prog_test_kfunc_list, &bpf_testmod_kfunc_btf_set);
 	return sysfs_remove_bin_file(kernel_kobj, &bin_attr_bpf_testmod_file);
 }
 
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms_module.c b/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
index 2cd5cded543f..831447878d7b 100644
--- a/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
+++ b/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
@@ -2,30 +2,29 @@
 /* Copyright (c) 2021 Facebook */
 
 #include <test_progs.h>
-#include <bpf/libbpf.h>
-#include <bpf/btf.h>
+#include <network_helpers.h>
 #include "test_ksyms_module.lskel.h"
 
-static int duration;
-
 void test_ksyms_module(void)
 {
-	struct test_ksyms_module* skel;
+	struct test_ksyms_module *skel;
+	int retval;
 	int err;
 
-	skel = test_ksyms_module__open_and_load();
-	if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
+	if (!env.has_testmod) {
+		test__skip();
 		return;
+	}
 
-	err = test_ksyms_module__attach(skel);
-	if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
+	skel = test_ksyms_module__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "test_ksyms_module__open_and_load"))
+		return;
+	err = bpf_prog_test_run(skel->progs.load.prog_fd, 1, &pkt_v4, sizeof(pkt_v4),
+				NULL, NULL, (__u32 *)&retval, NULL);
+	if (!ASSERT_OK(err, "bpf_prog_test_run"))
 		goto cleanup;
-
-	usleep(1);
-
-	ASSERT_EQ(skel->bss->triggered, true, "triggered");
-	ASSERT_EQ(skel->bss->out_mod_ksym_global, 123, "global_ksym_val");
-
+	ASSERT_EQ(retval, 0, "retval");
+	ASSERT_EQ(skel->bss->out_bpf_testmod_ksym, 42, "bpf_testmod_ksym");
 cleanup:
 	test_ksyms_module__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms_module_libbpf.c b/tools/testing/selftests/bpf/prog_tests/ksyms_module_libbpf.c
new file mode 100644
index 000000000000..e6343ef63af9
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/ksyms_module_libbpf.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <test_progs.h>
+#include <network_helpers.h>
+#include "test_ksyms_module.skel.h"
+
+void test_ksyms_module_libbpf(void)
+{
+	struct test_ksyms_module *skel;
+	int retval, err;
+
+	if (!env.has_testmod) {
+		test__skip();
+		return;
+	}
+
+	skel = test_ksyms_module__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "test_ksyms_module__open"))
+		return;
+	err = bpf_prog_test_run(bpf_program__fd(skel->progs.load), 1, &pkt_v4,
+				sizeof(pkt_v4), NULL, NULL, (__u32 *)&retval, NULL);
+	if (!ASSERT_OK(err, "bpf_prog_test_run"))
+		goto cleanup;
+	ASSERT_EQ(retval, 0, "retval");
+	ASSERT_EQ(skel->bss->out_bpf_testmod_ksym, 42, "bpf_testmod_ksym");
+cleanup:
+	test_ksyms_module__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/progs/test_ksyms_module.c b/tools/testing/selftests/bpf/progs/test_ksyms_module.c
index d6a0b3086b90..0650d918c096 100644
--- a/tools/testing/selftests/bpf/progs/test_ksyms_module.c
+++ b/tools/testing/selftests/bpf/progs/test_ksyms_module.c
@@ -2,24 +2,48 @@
 /* Copyright (c) 2021 Facebook */
 
 #include "vmlinux.h"
-
 #include <bpf/bpf_helpers.h>
 
+#define X_0(x)
+#define X_1(x) x X_0(x)
+#define X_2(x) x X_1(x)
+#define X_3(x) x X_2(x)
+#define X_4(x) x X_3(x)
+#define X_5(x) x X_4(x)
+#define X_6(x) x X_5(x)
+#define X_7(x) x X_6(x)
+#define X_8(x) x X_7(x)
+#define X_9(x) x X_8(x)
+#define X_10(x) x X_9(x)
+#define REPEAT_256(Y) X_2(X_10(X_10(Y))) X_5(X_10(Y)) X_6(Y)
+
 extern const int bpf_testmod_ksym_percpu __ksym;
+extern void bpf_testmod_test_mod_kfunc(int i) __ksym;
+extern void bpf_testmod_invalid_mod_kfunc(void) __ksym __weak;
 
-int out_mod_ksym_global = 0;
-bool triggered = false;
+int out_bpf_testmod_ksym = 0;
+const volatile int x = 0;
 
-SEC("raw_tp/sys_enter")
-int handler(const void *ctx)
+SEC("tc")
+int load(struct __sk_buff *skb)
 {
-	int *val;
-	__u32 cpu;
-
-	val = (int *)bpf_this_cpu_ptr(&bpf_testmod_ksym_percpu);
-	out_mod_ksym_global = *val;
-	triggered = true;
+	/* This will be kept by clang, but removed by verifier. Since it is
+	 * marked as __weak, libbpf and gen_loader don't error out if BTF ID
+	 * is not found for it, instead imm and off is set to 0 for it.
+	 */
+	if (x)
+		bpf_testmod_invalid_mod_kfunc();
+	bpf_testmod_test_mod_kfunc(42);
+	out_bpf_testmod_ksym = *(int *)bpf_this_cpu_ptr(&bpf_testmod_ksym_percpu);
+	return 0;
+}
 
+SEC("tc")
+int load_256(struct __sk_buff *skb)
+{
+	/* this will fail if kfunc doesn't reuse its own btf fd index */
+	REPEAT_256(bpf_testmod_test_mod_kfunc(42););
+	bpf_testmod_test_mod_kfunc(42);
 	return 0;
 }
 
diff --git a/tools/testing/selftests/bpf/verifier/calls.c b/tools/testing/selftests/bpf/verifier/calls.c
index 336a749673d1..d7b74eb28333 100644
--- a/tools/testing/selftests/bpf/verifier/calls.c
+++ b/tools/testing/selftests/bpf/verifier/calls.c
@@ -1,3 +1,26 @@
+{
+	"calls: invalid kfunc call not eliminated",
+	.insns = {
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	},
+	.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+	.result  = REJECT,
+	.errstr = "invalid kernel function call not eliminated in verifier pass",
+},
+{
+	"calls: invalid kfunc call unreachable",
+	.insns = {
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_JMP_IMM(BPF_JGT, BPF_REG_0, 0, 2),
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, BPF_PSEUDO_KFUNC_CALL, 0, 0),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	},
+	.prog_type = BPF_PROG_TYPE_TRACEPOINT,
+	.result  = ACCEPT,
+},
 {
 	"calls: basic sanity",
 	.insns = {
-- 
cgit v1.2.3


From 57a610f1c58fa493315e1c24eef6d992cdf4c4a9 Mon Sep 17 00:00:00 2001
From: Jie Meng <jmeng@fb.com>
Date: Fri, 1 Oct 2021 20:56:26 -0700
Subject: bpf, x64: Save bytes for DIV by reducing reg copies

Instead of unconditionally performing push/pop on %rax/%rdx in case of
division/modulo, we can save a few bytes in case of destination register
being either BPF r0 (%rax) or r3 (%rdx) since the result is written in
there anyway.

Also, we do not need to copy the source to %r11 unless the source is either
%rax, %rdx or an immediate.

For example, before the patch:

  22:   push   %rax
  23:   push   %rdx
  24:   mov    %rsi,%r11
  27:   xor    %edx,%edx
  29:   div    %r11
  2c:   mov    %rax,%r11
  2f:   pop    %rdx
  30:   pop    %rax
  31:   mov    %r11,%rax

After:

  22:   push   %rdx
  23:   xor    %edx,%edx
  25:   div    %rsi
  28:   pop    %rdx

Signed-off-by: Jie Meng <jmeng@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211002035626.2041910-1-jmeng@fb.com
---
 arch/x86/net/bpf_jit_comp.c                | 71 ++++++++++++++++++------------
 tools/testing/selftests/bpf/verifier/jit.c | 47 ++++++++++++++++++++
 2 files changed, 89 insertions(+), 29 deletions(-)

(limited to 'tools/testing')

diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 576ef1a6954a..5a0edea3cc2e 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -1028,19 +1028,30 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
 		case BPF_ALU64 | BPF_MOD | BPF_X:
 		case BPF_ALU64 | BPF_DIV | BPF_X:
 		case BPF_ALU64 | BPF_MOD | BPF_K:
-		case BPF_ALU64 | BPF_DIV | BPF_K:
-			EMIT1(0x50); /* push rax */
-			EMIT1(0x52); /* push rdx */
-
-			if (BPF_SRC(insn->code) == BPF_X)
-				/* mov r11, src_reg */
-				EMIT_mov(AUX_REG, src_reg);
-			else
+		case BPF_ALU64 | BPF_DIV | BPF_K: {
+			bool is64 = BPF_CLASS(insn->code) == BPF_ALU64;
+
+			if (dst_reg != BPF_REG_0)
+				EMIT1(0x50); /* push rax */
+			if (dst_reg != BPF_REG_3)
+				EMIT1(0x52); /* push rdx */
+
+			if (BPF_SRC(insn->code) == BPF_X) {
+				if (src_reg == BPF_REG_0 ||
+				    src_reg == BPF_REG_3) {
+					/* mov r11, src_reg */
+					EMIT_mov(AUX_REG, src_reg);
+					src_reg = AUX_REG;
+				}
+			} else {
 				/* mov r11, imm32 */
 				EMIT3_off32(0x49, 0xC7, 0xC3, imm32);
+				src_reg = AUX_REG;
+			}
 
-			/* mov rax, dst_reg */
-			EMIT_mov(BPF_REG_0, dst_reg);
+			if (dst_reg != BPF_REG_0)
+				/* mov rax, dst_reg */
+				emit_mov_reg(&prog, is64, BPF_REG_0, dst_reg);
 
 			/*
 			 * xor edx, edx
@@ -1048,26 +1059,28 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
 			 */
 			EMIT2(0x31, 0xd2);
 
-			if (BPF_CLASS(insn->code) == BPF_ALU64)
-				/* div r11 */
-				EMIT3(0x49, 0xF7, 0xF3);
-			else
-				/* div r11d */
-				EMIT3(0x41, 0xF7, 0xF3);
-
-			if (BPF_OP(insn->code) == BPF_MOD)
-				/* mov r11, rdx */
-				EMIT3(0x49, 0x89, 0xD3);
-			else
-				/* mov r11, rax */
-				EMIT3(0x49, 0x89, 0xC3);
-
-			EMIT1(0x5A); /* pop rdx */
-			EMIT1(0x58); /* pop rax */
-
-			/* mov dst_reg, r11 */
-			EMIT_mov(dst_reg, AUX_REG);
+			if (is64)
+				EMIT1(add_1mod(0x48, src_reg));
+			else if (is_ereg(src_reg))
+				EMIT1(add_1mod(0x40, src_reg));
+			/* div src_reg */
+			EMIT2(0xF7, add_1reg(0xF0, src_reg));
+
+			if (BPF_OP(insn->code) == BPF_MOD &&
+			    dst_reg != BPF_REG_3)
+				/* mov dst_reg, rdx */
+				emit_mov_reg(&prog, is64, dst_reg, BPF_REG_3);
+			else if (BPF_OP(insn->code) == BPF_DIV &&
+				 dst_reg != BPF_REG_0)
+				/* mov dst_reg, rax */
+				emit_mov_reg(&prog, is64, dst_reg, BPF_REG_0);
+
+			if (dst_reg != BPF_REG_3)
+				EMIT1(0x5A); /* pop rdx */
+			if (dst_reg != BPF_REG_0)
+				EMIT1(0x58); /* pop rax */
 			break;
+		}
 
 		case BPF_ALU | BPF_MUL | BPF_K:
 		case BPF_ALU64 | BPF_MUL | BPF_K:
diff --git a/tools/testing/selftests/bpf/verifier/jit.c b/tools/testing/selftests/bpf/verifier/jit.c
index eedcb752bf70..79021c30e51e 100644
--- a/tools/testing/selftests/bpf/verifier/jit.c
+++ b/tools/testing/selftests/bpf/verifier/jit.c
@@ -102,6 +102,53 @@
 	.result = ACCEPT,
 	.retval = 2,
 },
+{
+	"jit: various div tests",
+	.insns = {
+	BPF_LD_IMM64(BPF_REG_2, 0xefeffeULL),
+	BPF_LD_IMM64(BPF_REG_0, 0xeeff0d413122ULL),
+	BPF_LD_IMM64(BPF_REG_1, 0xfefeeeULL),
+	BPF_ALU64_REG(BPF_DIV, BPF_REG_0, BPF_REG_1),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_2, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	BPF_LD_IMM64(BPF_REG_3, 0xeeff0d413122ULL),
+	BPF_ALU64_IMM(BPF_DIV, BPF_REG_3, 0xfefeeeULL),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_3, BPF_REG_2, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	BPF_LD_IMM64(BPF_REG_2, 0xaa93ULL),
+	BPF_ALU64_IMM(BPF_MOD, BPF_REG_1, 0xbeefULL),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	BPF_LD_IMM64(BPF_REG_1, 0xfefeeeULL),
+	BPF_LD_IMM64(BPF_REG_3, 0xbeefULL),
+	BPF_ALU64_REG(BPF_MOD, BPF_REG_1, BPF_REG_3),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	BPF_LD_IMM64(BPF_REG_2, 0x5ee1dULL),
+	BPF_LD_IMM64(BPF_REG_1, 0xfefeeeULL),
+	BPF_LD_IMM64(BPF_REG_3, 0x2bULL),
+	BPF_ALU32_REG(BPF_DIV, BPF_REG_1, BPF_REG_3),
+	BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_2, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	BPF_ALU32_REG(BPF_DIV, BPF_REG_1, BPF_REG_1),
+	BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	BPF_ALU64_REG(BPF_MOD, BPF_REG_2, BPF_REG_2),
+	BPF_JMP_IMM(BPF_JEQ, BPF_REG_2, 0, 2),
+	BPF_MOV64_IMM(BPF_REG_0, 1),
+	BPF_EXIT_INSN(),
+	BPF_MOV64_IMM(BPF_REG_0, 2),
+	BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+	.retval = 2,
+},
 {
 	"jit: jsgt, jslt",
 	.insns = {
-- 
cgit v1.2.3


From c65eb8082d4cb02ef87bdecedce8969d5ccbea54 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Tue, 5 Oct 2021 22:11:06 -0700
Subject: selftests/bpf: Refactor btf_write selftest to reuse BTF generation
 logic

Next patch will need to reuse BTF generation logic, which tests every
supported BTF kind, for testing btf__add_btf() APIs. So restructure
existing selftests and make it as a single subtest that uses bulk
VALIDATE_RAW_BTF() macro for raw BTF dump checking.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211006051107.17921-3-andrii@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/btf_write.c | 55 +++++++++++++++++++---
 1 file changed, 49 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf_write.c b/tools/testing/selftests/bpf/prog_tests/btf_write.c
index 76548eecce2c..aa4505618252 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_write.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_write.c
@@ -4,19 +4,15 @@
 #include <bpf/btf.h>
 #include "btf_helpers.h"
 
-void test_btf_write() {
+static void gen_btf(struct btf *btf)
+{
 	const struct btf_var_secinfo *vi;
 	const struct btf_type *t;
 	const struct btf_member *m;
 	const struct btf_enum *v;
 	const struct btf_param *p;
-	struct btf *btf;
 	int id, err, str_off;
 
-	btf = btf__new_empty();
-	if (!ASSERT_OK_PTR(btf, "new_empty"))
-		return;
-
 	str_off = btf__find_str(btf, "int");
 	ASSERT_EQ(str_off, -ENOENT, "int_str_missing_off");
 
@@ -301,6 +297,53 @@ void test_btf_write() {
 	ASSERT_EQ(btf_tag(t)->component_idx, 1, "tag_component_idx");
 	ASSERT_STREQ(btf_type_raw_dump(btf, 19),
 		     "[19] TAG 'tag2' type_id=14 component_idx=1", "raw_dump");
+}
+
+static void test_btf_add()
+{
+	struct btf *btf;
+
+	btf = btf__new_empty();
+	if (!ASSERT_OK_PTR(btf, "new_empty"))
+		return;
+
+	gen_btf(btf);
+
+	VALIDATE_RAW_BTF(
+		btf,
+		"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
+		"[2] PTR '(anon)' type_id=1",
+		"[3] CONST '(anon)' type_id=5",
+		"[4] VOLATILE '(anon)' type_id=3",
+		"[5] RESTRICT '(anon)' type_id=4",
+		"[6] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=10",
+		"[7] STRUCT 's1' size=8 vlen=2\n"
+		"\t'f1' type_id=1 bits_offset=0\n"
+		"\t'f2' type_id=1 bits_offset=32 bitfield_size=16",
+		"[8] UNION 'u1' size=8 vlen=1\n"
+		"\t'f1' type_id=1 bits_offset=0 bitfield_size=16",
+		"[9] ENUM 'e1' size=4 vlen=2\n"
+		"\t'v1' val=1\n"
+		"\t'v2' val=2",
+		"[10] FWD 'struct_fwd' fwd_kind=struct",
+		"[11] FWD 'union_fwd' fwd_kind=union",
+		"[12] ENUM 'enum_fwd' size=4 vlen=0",
+		"[13] TYPEDEF 'typedef1' type_id=1",
+		"[14] FUNC 'func1' type_id=15 linkage=global",
+		"[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n"
+		"\t'p1' type_id=1\n"
+		"\t'p2' type_id=2",
+		"[16] VAR 'var1' type_id=1, linkage=global-alloc",
+		"[17] DATASEC 'datasec1' size=12 vlen=1\n"
+		"\ttype_id=1 offset=4 size=8",
+		"[18] TAG 'tag1' type_id=16 component_idx=-1",
+		"[19] TAG 'tag2' type_id=14 component_idx=1");
 
 	btf__free(btf);
 }
+
+void test_btf_write()
+{
+	if (test__start_subtest("btf_add"))
+		test_btf_add();
+}
-- 
cgit v1.2.3


From 9d05787223913171fce20a737ba54e3b6e7da13c Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Tue, 5 Oct 2021 22:11:07 -0700
Subject: selftests/bpf: Test new btf__add_btf() API

Add a test that validates that btf__add_btf() API is correctly copying
all the types from the source BTF into destination BTF object and
adjusts type IDs and string offsets properly.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211006051107.17921-4-andrii@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/btf_write.c | 86 ++++++++++++++++++++++
 1 file changed, 86 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf_write.c b/tools/testing/selftests/bpf/prog_tests/btf_write.c
index aa4505618252..886e0fc1efb1 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_write.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_write.c
@@ -342,8 +342,94 @@ static void test_btf_add()
 	btf__free(btf);
 }
 
+static void test_btf_add_btf()
+{
+	struct btf *btf1 = NULL, *btf2 = NULL;
+	int id;
+
+	btf1 = btf__new_empty();
+	if (!ASSERT_OK_PTR(btf1, "btf1"))
+		return;
+
+	btf2 = btf__new_empty();
+	if (!ASSERT_OK_PTR(btf2, "btf2"))
+		goto cleanup;
+
+	gen_btf(btf1);
+	gen_btf(btf2);
+
+	id = btf__add_btf(btf1, btf2);
+	if (!ASSERT_EQ(id, 20, "id"))
+		goto cleanup;
+
+	VALIDATE_RAW_BTF(
+		btf1,
+		"[1] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
+		"[2] PTR '(anon)' type_id=1",
+		"[3] CONST '(anon)' type_id=5",
+		"[4] VOLATILE '(anon)' type_id=3",
+		"[5] RESTRICT '(anon)' type_id=4",
+		"[6] ARRAY '(anon)' type_id=2 index_type_id=1 nr_elems=10",
+		"[7] STRUCT 's1' size=8 vlen=2\n"
+		"\t'f1' type_id=1 bits_offset=0\n"
+		"\t'f2' type_id=1 bits_offset=32 bitfield_size=16",
+		"[8] UNION 'u1' size=8 vlen=1\n"
+		"\t'f1' type_id=1 bits_offset=0 bitfield_size=16",
+		"[9] ENUM 'e1' size=4 vlen=2\n"
+		"\t'v1' val=1\n"
+		"\t'v2' val=2",
+		"[10] FWD 'struct_fwd' fwd_kind=struct",
+		"[11] FWD 'union_fwd' fwd_kind=union",
+		"[12] ENUM 'enum_fwd' size=4 vlen=0",
+		"[13] TYPEDEF 'typedef1' type_id=1",
+		"[14] FUNC 'func1' type_id=15 linkage=global",
+		"[15] FUNC_PROTO '(anon)' ret_type_id=1 vlen=2\n"
+		"\t'p1' type_id=1\n"
+		"\t'p2' type_id=2",
+		"[16] VAR 'var1' type_id=1, linkage=global-alloc",
+		"[17] DATASEC 'datasec1' size=12 vlen=1\n"
+		"\ttype_id=1 offset=4 size=8",
+		"[18] TAG 'tag1' type_id=16 component_idx=-1",
+		"[19] TAG 'tag2' type_id=14 component_idx=1",
+
+		/* types appended from the second BTF */
+		"[20] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
+		"[21] PTR '(anon)' type_id=20",
+		"[22] CONST '(anon)' type_id=24",
+		"[23] VOLATILE '(anon)' type_id=22",
+		"[24] RESTRICT '(anon)' type_id=23",
+		"[25] ARRAY '(anon)' type_id=21 index_type_id=20 nr_elems=10",
+		"[26] STRUCT 's1' size=8 vlen=2\n"
+		"\t'f1' type_id=20 bits_offset=0\n"
+		"\t'f2' type_id=20 bits_offset=32 bitfield_size=16",
+		"[27] UNION 'u1' size=8 vlen=1\n"
+		"\t'f1' type_id=20 bits_offset=0 bitfield_size=16",
+		"[28] ENUM 'e1' size=4 vlen=2\n"
+		"\t'v1' val=1\n"
+		"\t'v2' val=2",
+		"[29] FWD 'struct_fwd' fwd_kind=struct",
+		"[30] FWD 'union_fwd' fwd_kind=union",
+		"[31] ENUM 'enum_fwd' size=4 vlen=0",
+		"[32] TYPEDEF 'typedef1' type_id=20",
+		"[33] FUNC 'func1' type_id=34 linkage=global",
+		"[34] FUNC_PROTO '(anon)' ret_type_id=20 vlen=2\n"
+		"\t'p1' type_id=20\n"
+		"\t'p2' type_id=21",
+		"[35] VAR 'var1' type_id=20, linkage=global-alloc",
+		"[36] DATASEC 'datasec1' size=12 vlen=1\n"
+		"\ttype_id=20 offset=4 size=8",
+		"[37] TAG 'tag1' type_id=35 component_idx=-1",
+		"[38] TAG 'tag2' type_id=33 component_idx=1");
+
+cleanup:
+	btf__free(btf1);
+	btf__free(btf2);
+}
+
 void test_btf_write()
 {
 	if (test__start_subtest("btf_add"))
 		test_btf_add();
+	if (test__start_subtest("btf_add_btf"))
+		test_btf_add_btf();
 }
-- 
cgit v1.2.3


From 189c83bdde850e1fc8bb347f813cdd8776ce7abf Mon Sep 17 00:00:00 2001
From: Jiri Olsa <jolsa@redhat.com>
Date: Sun, 3 Oct 2021 18:49:25 +0200
Subject: selftest/bpf: Switch recursion test to use htab_map_delete_elem

Currently the recursion test is hooking __htab_map_lookup_elem
function, which is invoked both from bpf_prog and bpf syscall.

But in our kernel build, the __htab_map_lookup_elem gets inlined
within the htab_map_lookup_elem, so it's not trigered and the
test fails.

Fixing this by using htab_map_delete_elem, which is not inlined
for bpf_prog calls (like htab_map_lookup_elem is) and is used
directly as pointer for map_delete_elem, so it won't disappear
by inlining.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/YVnfFTL/3T6jOwHI@krava
---
 tools/testing/selftests/bpf/prog_tests/recursion.c | 10 +++++-----
 tools/testing/selftests/bpf/progs/recursion.c      |  9 +++------
 2 files changed, 8 insertions(+), 11 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/recursion.c b/tools/testing/selftests/bpf/prog_tests/recursion.c
index 0e378d63fe18..f3af2627b599 100644
--- a/tools/testing/selftests/bpf/prog_tests/recursion.c
+++ b/tools/testing/selftests/bpf/prog_tests/recursion.c
@@ -20,18 +20,18 @@ void test_recursion(void)
 		goto out;
 
 	ASSERT_EQ(skel->bss->pass1, 0, "pass1 == 0");
-	bpf_map_lookup_elem(bpf_map__fd(skel->maps.hash1), &key, 0);
+	bpf_map_delete_elem(bpf_map__fd(skel->maps.hash1), &key);
 	ASSERT_EQ(skel->bss->pass1, 1, "pass1 == 1");
-	bpf_map_lookup_elem(bpf_map__fd(skel->maps.hash1), &key, 0);
+	bpf_map_delete_elem(bpf_map__fd(skel->maps.hash1), &key);
 	ASSERT_EQ(skel->bss->pass1, 2, "pass1 == 2");
 
 	ASSERT_EQ(skel->bss->pass2, 0, "pass2 == 0");
-	bpf_map_lookup_elem(bpf_map__fd(skel->maps.hash2), &key, 0);
+	bpf_map_delete_elem(bpf_map__fd(skel->maps.hash2), &key);
 	ASSERT_EQ(skel->bss->pass2, 1, "pass2 == 1");
-	bpf_map_lookup_elem(bpf_map__fd(skel->maps.hash2), &key, 0);
+	bpf_map_delete_elem(bpf_map__fd(skel->maps.hash2), &key);
 	ASSERT_EQ(skel->bss->pass2, 2, "pass2 == 2");
 
-	err = bpf_obj_get_info_by_fd(bpf_program__fd(skel->progs.on_lookup),
+	err = bpf_obj_get_info_by_fd(bpf_program__fd(skel->progs.on_delete),
 				     &prog_info, &prog_info_len);
 	if (!ASSERT_OK(err, "get_prog_info"))
 		goto out;
diff --git a/tools/testing/selftests/bpf/progs/recursion.c b/tools/testing/selftests/bpf/progs/recursion.c
index 49f679375b9d..3c2423bb19e2 100644
--- a/tools/testing/selftests/bpf/progs/recursion.c
+++ b/tools/testing/selftests/bpf/progs/recursion.c
@@ -24,8 +24,8 @@ struct {
 int pass1 = 0;
 int pass2 = 0;
 
-SEC("fentry/__htab_map_lookup_elem")
-int BPF_PROG(on_lookup, struct bpf_map *map)
+SEC("fentry/htab_map_delete_elem")
+int BPF_PROG(on_delete, struct bpf_map *map)
 {
 	int key = 0;
 
@@ -35,10 +35,7 @@ int BPF_PROG(on_lookup, struct bpf_map *map)
 	}
 	if (map == (void *)&hash2) {
 		pass2++;
-		/* htab_map_gen_lookup() will inline below call
-		 * into direct call to __htab_map_lookup_elem()
-		 */
-		bpf_map_lookup_elem(&hash2, &key);
+		bpf_map_delete_elem(&hash2, &key);
 		return 0;
 	}
 
-- 
cgit v1.2.3


From 6f2b219b62a4376ca2da15c503de79d0650c8155 Mon Sep 17 00:00:00 2001
From: Hengqi Chen <hengqi.chen@gmail.com>
Date: Mon, 4 Oct 2021 00:58:44 +0800
Subject: selftests/bpf: Switch to new bpf_object__next_{map,program} APIs

Replace deprecated bpf_{map,program}__next APIs with newly added
bpf_object__next_{map,program} APIs, so that no compilation warnings
emit.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211003165844.4054931-3-hengqi.chen@gmail.com
---
 samples/bpf/xdp1_user.c                                   | 2 +-
 samples/bpf/xdp_sample_pkts_user.c                        | 2 +-
 tools/bpf/bpftool/iter.c                                  | 2 +-
 tools/bpf/bpftool/prog.c                                  | 2 +-
 tools/testing/selftests/bpf/prog_tests/btf.c              | 2 +-
 tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c    | 6 +++---
 tools/testing/selftests/bpf/prog_tests/select_reuseport.c | 2 +-
 tools/testing/selftests/bpf/prog_tests/tcp_rtt.c          | 2 +-
 tools/testing/selftests/bpf/xdping.c                      | 2 +-
 9 files changed, 11 insertions(+), 11 deletions(-)

(limited to 'tools/testing')

diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c
index 116e39f6b666..8675fa5273df 100644
--- a/samples/bpf/xdp1_user.c
+++ b/samples/bpf/xdp1_user.c
@@ -128,7 +128,7 @@ int main(int argc, char **argv)
 	if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
 		return 1;
 
-	map = bpf_map__next(NULL, obj);
+	map = bpf_object__next_map(obj, NULL);
 	if (!map) {
 		printf("finding a map in obj file failed\n");
 		return 1;
diff --git a/samples/bpf/xdp_sample_pkts_user.c b/samples/bpf/xdp_sample_pkts_user.c
index 495e09897bd3..f4382ccdcbb1 100644
--- a/samples/bpf/xdp_sample_pkts_user.c
+++ b/samples/bpf/xdp_sample_pkts_user.c
@@ -154,7 +154,7 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
-	map = bpf_map__next(NULL, obj);
+	map = bpf_object__next_map(obj, NULL);
 	if (!map) {
 		printf("finding a map in obj file failed\n");
 		return 1;
diff --git a/tools/bpf/bpftool/iter.c b/tools/bpf/bpftool/iter.c
index 84a9b01d956d..6c0de647b8ad 100644
--- a/tools/bpf/bpftool/iter.c
+++ b/tools/bpf/bpftool/iter.c
@@ -57,7 +57,7 @@ static int do_pin(int argc, char **argv)
 		goto close_obj;
 	}
 
-	prog = bpf_program__next(NULL, obj);
+	prog = bpf_object__next_program(obj, NULL);
 	if (!prog) {
 		p_err("can't find bpf program in objfile %s", objfile);
 		goto close_obj;
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 9c3e343b7d87..a24ea7e26aa4 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -1601,7 +1601,7 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
 		goto err_close_obj;
 
 	if (first_prog_only) {
-		prog = bpf_program__next(NULL, obj);
+		prog = bpf_object__next_program(obj, NULL);
 		if (!prog) {
 			p_err("object file doesn't contain any bpf program");
 			goto err_close_obj;
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index 9c85d7d27409..acd33d0cd5d9 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -4511,7 +4511,7 @@ static void do_test_file(unsigned int test_num)
 	if (CHECK(err, "obj: %d", err))
 		return;
 
-	prog = bpf_program__next(NULL, obj);
+	prog = bpf_object__next_program(obj, NULL);
 	if (CHECK(!prog, "Cannot find bpf_prog")) {
 		err = -1;
 		goto done;
diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
index c7c1816899bf..2839f4270a26 100644
--- a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
+++ b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
@@ -285,7 +285,7 @@ static void test_fmod_ret_freplace(void)
 	if (!ASSERT_OK_PTR(freplace_obj, "freplace_obj_open"))
 		goto out;
 
-	prog = bpf_program__next(NULL, freplace_obj);
+	prog = bpf_object__next_program(freplace_obj, NULL);
 	err = bpf_program__set_attach_target(prog, pkt_fd, NULL);
 	ASSERT_OK(err, "freplace__set_attach_target");
 
@@ -302,7 +302,7 @@ static void test_fmod_ret_freplace(void)
 		goto out;
 
 	attach_prog_fd = bpf_program__fd(prog);
-	prog = bpf_program__next(NULL, fmod_obj);
+	prog = bpf_object__next_program(fmod_obj, NULL);
 	err = bpf_program__set_attach_target(prog, attach_prog_fd, NULL);
 	ASSERT_OK(err, "fmod_ret_set_attach_target");
 
@@ -352,7 +352,7 @@ static void test_obj_load_failure_common(const char *obj_file,
 	if (!ASSERT_OK_PTR(obj, "obj_open"))
 		goto close_prog;
 
-	prog = bpf_program__next(NULL, obj);
+	prog = bpf_object__next_program(obj, NULL);
 	err = bpf_program__set_attach_target(prog, pkt_fd, NULL);
 	ASSERT_OK(err, "set_attach_target");
 
diff --git a/tools/testing/selftests/bpf/prog_tests/select_reuseport.c b/tools/testing/selftests/bpf/prog_tests/select_reuseport.c
index 4efd337d6a3c..d40e9156c48d 100644
--- a/tools/testing/selftests/bpf/prog_tests/select_reuseport.c
+++ b/tools/testing/selftests/bpf/prog_tests/select_reuseport.c
@@ -114,7 +114,7 @@ static int prepare_bpf_obj(void)
 	err = bpf_object__load(obj);
 	RET_ERR(err, "load bpf_object", "err:%d\n", err);
 
-	prog = bpf_program__next(NULL, obj);
+	prog = bpf_object__next_program(obj, NULL);
 	RET_ERR(!prog, "get first bpf_program", "!prog\n");
 	select_by_skb_data_prog = bpf_program__fd(prog);
 	RET_ERR(select_by_skb_data_prog < 0, "get prog fd",
diff --git a/tools/testing/selftests/bpf/prog_tests/tcp_rtt.c b/tools/testing/selftests/bpf/prog_tests/tcp_rtt.c
index d207e968e6b1..265b4fe33ec3 100644
--- a/tools/testing/selftests/bpf/prog_tests/tcp_rtt.c
+++ b/tools/testing/selftests/bpf/prog_tests/tcp_rtt.c
@@ -109,7 +109,7 @@ static int run_test(int cgroup_fd, int server_fd)
 		return -1;
 	}
 
-	map = bpf_map__next(NULL, obj);
+	map = bpf_object__next_map(obj, NULL);
 	map_fd = bpf_map__fd(map);
 
 	err = bpf_prog_attach(prog_fd, cgroup_fd, BPF_CGROUP_SOCK_OPS, 0);
diff --git a/tools/testing/selftests/bpf/xdping.c b/tools/testing/selftests/bpf/xdping.c
index 79a3453dab25..30f12637f4e4 100644
--- a/tools/testing/selftests/bpf/xdping.c
+++ b/tools/testing/selftests/bpf/xdping.c
@@ -187,7 +187,7 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
-	map = bpf_map__next(NULL, obj);
+	map = bpf_object__next_map(obj, NULL);
 	if (map)
 		map_fd = bpf_map__fd(map);
 	if (!map || map_fd < 0) {
-- 
cgit v1.2.3


From aa67fdb4643616f04cb59b6d090010c371ab1a80 Mon Sep 17 00:00:00 2001
From: Song Liu <songliubraving@fb.com>
Date: Wed, 6 Oct 2021 22:02:31 -0700
Subject: selftests/bpf: Skip the second half of get_branch_snapshot in vm

VMs running on upstream 5.12+ kernel support LBR. However,
bpf_get_branch_snapshot couldn't stop the LBR before too many entries
are flushed. Skip the hit/waste test for VMs before we find a proper fix
for LBR in VM.

Fixes: 025bd7c753aa ("selftests/bpf: Add test for bpf_get_branch_snapshot")
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007050231.728496-1-songliubraving@fb.com
---
 .../selftests/bpf/prog_tests/get_branch_snapshot.c | 34 ++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
index 67e86f8d8677..e4f92feb7b32 100644
--- a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
+++ b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
@@ -6,6 +6,30 @@
 static int *pfd_array;
 static int cpu_cnt;
 
+static bool is_hypervisor(void)
+{
+	char *line = NULL;
+	bool ret = false;
+	size_t len;
+	FILE *fp;
+
+	fp = fopen("/proc/cpuinfo", "r");
+	if (!fp)
+		return false;
+
+	while (getline(&line, &len, fp) != -1) {
+		if (!strncmp(line, "flags", 5)) {
+			if (strstr(line, "hypervisor") != NULL)
+				ret = true;
+			break;
+		}
+	}
+
+	free(line);
+	fclose(fp);
+	return ret;
+}
+
 static int create_perf_events(void)
 {
 	struct perf_event_attr attr = {0};
@@ -83,6 +107,16 @@ void test_get_branch_snapshot(void)
 		goto cleanup;
 	}
 
+	if (is_hypervisor()) {
+		/* As of today, LBR in hypervisor cannot be stopped before
+		 * too many entries are flushed. Skip the hit/waste test
+		 * for now in hypervisor until we optimize the LBR in
+		 * hypervisor.
+		 */
+		test__skip();
+		goto cleanup;
+	}
+
 	ASSERT_GT(skel->bss->test1_hits, 6, "find_looptest_in_lbr");
 
 	/* Given we stop LBR in software, we will waste a few entries.
-- 
cgit v1.2.3


From dd65acf72d0e073970459d5da80573a04304aaa9 Mon Sep 17 00:00:00 2001
From: Dave Marchevsky <davemarchevsky@fb.com>
Date: Thu, 7 Oct 2021 16:12:34 -0700
Subject: selftests/bpf: Remove SEC("version") from test progs

Since commit 6c4fc209fcf9d ("bpf: remove useless version check for prog
load") these "version" sections, which result in bpf_attr.kern_version
being set, have been unnecessary.

Remove them so that it's obvious to folks using selftests as a guide that
"modern" BPF progs don't need this section.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007231234.2223081-1-davemarchevsky@fb.com
---
 tools/testing/selftests/bpf/progs/cgroup_skb_sk_lookup_kern.c  | 1 -
 tools/testing/selftests/bpf/progs/connect4_prog.c              | 2 --
 tools/testing/selftests/bpf/progs/connect6_prog.c              | 2 --
 tools/testing/selftests/bpf/progs/connect_force_port4.c        | 1 -
 tools/testing/selftests/bpf/progs/connect_force_port6.c        | 1 -
 tools/testing/selftests/bpf/progs/dev_cgroup.c                 | 1 -
 tools/testing/selftests/bpf/progs/get_cgroup_id_kern.c         | 1 -
 tools/testing/selftests/bpf/progs/map_ptr_kern.c               | 1 -
 tools/testing/selftests/bpf/progs/netcnt_prog.c                | 1 -
 tools/testing/selftests/bpf/progs/sendmsg4_prog.c              | 2 --
 tools/testing/selftests/bpf/progs/sendmsg6_prog.c              | 2 --
 tools/testing/selftests/bpf/progs/sockmap_parse_prog.c         | 2 --
 tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c       | 2 --
 tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c       | 2 --
 tools/testing/selftests/bpf/progs/sockopt_inherit.c            | 1 -
 tools/testing/selftests/bpf/progs/tcp_rtt.c                    | 1 -
 tools/testing/selftests/bpf/progs/test_btf_haskv.c             | 2 --
 tools/testing/selftests/bpf/progs/test_btf_newkv.c             | 2 --
 tools/testing/selftests/bpf/progs/test_btf_nokv.c              | 2 --
 tools/testing/selftests/bpf/progs/test_l4lb.c                  | 2 --
 tools/testing/selftests/bpf/progs/test_map_in_map.c            | 1 -
 tools/testing/selftests/bpf/progs/test_pinning.c               | 2 --
 tools/testing/selftests/bpf/progs/test_pinning_invalid.c       | 2 --
 tools/testing/selftests/bpf/progs/test_pkt_access.c            | 1 -
 tools/testing/selftests/bpf/progs/test_queue_stack_map.h       | 2 --
 tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c | 2 --
 tools/testing/selftests/bpf/progs/test_sk_lookup.c             | 1 -
 tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c    | 2 --
 tools/testing/selftests/bpf/progs/test_skb_ctx.c               | 1 -
 tools/testing/selftests/bpf/progs/test_sockmap_kern.h          | 1 -
 tools/testing/selftests/bpf/progs/test_sockmap_listen.c        | 1 -
 tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c   | 1 -
 tools/testing/selftests/bpf/progs/test_tcp_estats.c            | 1 -
 tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c           | 1 -
 tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c        | 2 --
 tools/testing/selftests/bpf/progs/test_tracepoint.c            | 1 -
 tools/testing/selftests/bpf/progs/test_tunnel_kern.c           | 2 --
 tools/testing/selftests/bpf/progs/test_xdp.c                   | 2 --
 tools/testing/selftests/bpf/progs/test_xdp_loop.c              | 2 --
 tools/testing/selftests/bpf/progs/test_xdp_redirect.c          | 2 --
 40 files changed, 61 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/cgroup_skb_sk_lookup_kern.c b/tools/testing/selftests/bpf/progs/cgroup_skb_sk_lookup_kern.c
index 3f757e30d7a0..88638315c582 100644
--- a/tools/testing/selftests/bpf/progs/cgroup_skb_sk_lookup_kern.c
+++ b/tools/testing/selftests/bpf/progs/cgroup_skb_sk_lookup_kern.c
@@ -14,7 +14,6 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 
-int _version SEC("version") = 1;
 char _license[] SEC("license") = "GPL";
 
 __u16 g_serv_port = 0;
diff --git a/tools/testing/selftests/bpf/progs/connect4_prog.c b/tools/testing/selftests/bpf/progs/connect4_prog.c
index a943d394fd3a..b241932911db 100644
--- a/tools/testing/selftests/bpf/progs/connect4_prog.c
+++ b/tools/testing/selftests/bpf/progs/connect4_prog.c
@@ -31,8 +31,6 @@
 #define IFNAMSIZ 16
 #endif
 
-int _version SEC("version") = 1;
-
 __attribute__ ((noinline))
 int do_bind(struct bpf_sock_addr *ctx)
 {
diff --git a/tools/testing/selftests/bpf/progs/connect6_prog.c b/tools/testing/selftests/bpf/progs/connect6_prog.c
index 506d0f81a375..40266d2c737c 100644
--- a/tools/testing/selftests/bpf/progs/connect6_prog.c
+++ b/tools/testing/selftests/bpf/progs/connect6_prog.c
@@ -24,8 +24,6 @@
 
 #define DST_REWRITE_PORT6	6666
 
-int _version SEC("version") = 1;
-
 SEC("cgroup/connect6")
 int connect_v6_prog(struct bpf_sock_addr *ctx)
 {
diff --git a/tools/testing/selftests/bpf/progs/connect_force_port4.c b/tools/testing/selftests/bpf/progs/connect_force_port4.c
index a979aaef2a76..27a632dd382e 100644
--- a/tools/testing/selftests/bpf/progs/connect_force_port4.c
+++ b/tools/testing/selftests/bpf/progs/connect_force_port4.c
@@ -13,7 +13,6 @@
 #include <bpf_sockopt_helpers.h>
 
 char _license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
 
 struct svc_addr {
 	__be32 addr;
diff --git a/tools/testing/selftests/bpf/progs/connect_force_port6.c b/tools/testing/selftests/bpf/progs/connect_force_port6.c
index afc8f1c5a9d6..19cad93e612f 100644
--- a/tools/testing/selftests/bpf/progs/connect_force_port6.c
+++ b/tools/testing/selftests/bpf/progs/connect_force_port6.c
@@ -12,7 +12,6 @@
 #include <bpf_sockopt_helpers.h>
 
 char _license[] SEC("license") = "GPL";
-int _version SEC("version") = 1;
 
 struct svc_addr {
 	__be32 addr[4];
diff --git a/tools/testing/selftests/bpf/progs/dev_cgroup.c b/tools/testing/selftests/bpf/progs/dev_cgroup.c
index 8924e06bdef0..79b54a4fa244 100644
--- a/tools/testing/selftests/bpf/progs/dev_cgroup.c
+++ b/tools/testing/selftests/bpf/progs/dev_cgroup.c
@@ -57,4 +57,3 @@ int bpf_prog1(struct bpf_cgroup_dev_ctx *ctx)
 }
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = LINUX_VERSION_CODE;
diff --git a/tools/testing/selftests/bpf/progs/get_cgroup_id_kern.c b/tools/testing/selftests/bpf/progs/get_cgroup_id_kern.c
index 6b42db2fe391..68587b1de34e 100644
--- a/tools/testing/selftests/bpf/progs/get_cgroup_id_kern.c
+++ b/tools/testing/selftests/bpf/progs/get_cgroup_id_kern.c
@@ -37,4 +37,3 @@ int trace(void *ctx)
 }
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = 1; /* ignored by tracepoints, required by libbpf.a */
diff --git a/tools/testing/selftests/bpf/progs/map_ptr_kern.c b/tools/testing/selftests/bpf/progs/map_ptr_kern.c
index d1d304c980f0..b1b711d9b214 100644
--- a/tools/testing/selftests/bpf/progs/map_ptr_kern.c
+++ b/tools/testing/selftests/bpf/progs/map_ptr_kern.c
@@ -683,5 +683,4 @@ int cg_skb(void *ctx)
 	return 1;
 }
 
-__u32 _version SEC("version") = 1;
 char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/netcnt_prog.c b/tools/testing/selftests/bpf/progs/netcnt_prog.c
index 43649bce4c54..f718b2c212dc 100644
--- a/tools/testing/selftests/bpf/progs/netcnt_prog.c
+++ b/tools/testing/selftests/bpf/progs/netcnt_prog.c
@@ -68,4 +68,3 @@ int bpf_nextcnt(struct __sk_buff *skb)
 }
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = LINUX_VERSION_CODE;
diff --git a/tools/testing/selftests/bpf/progs/sendmsg4_prog.c b/tools/testing/selftests/bpf/progs/sendmsg4_prog.c
index ac5abc34cde8..ea75a44cb7fc 100644
--- a/tools/testing/selftests/bpf/progs/sendmsg4_prog.c
+++ b/tools/testing/selftests/bpf/progs/sendmsg4_prog.c
@@ -18,8 +18,6 @@
 #define DST_PORT		4040
 #define DST_REWRITE_PORT4	4444
 
-int _version SEC("version") = 1;
-
 SEC("cgroup/sendmsg4")
 int sendmsg_v4_prog(struct bpf_sock_addr *ctx)
 {
diff --git a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c
index 24694b1a8d82..bf9b46b806f6 100644
--- a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c
+++ b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c
@@ -22,8 +22,6 @@
 
 #define DST_REWRITE_PORT6	6666
 
-int _version SEC("version") = 1;
-
 SEC("cgroup/sendmsg6")
 int sendmsg_v6_prog(struct bpf_sock_addr *ctx)
 {
diff --git a/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c b/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c
index ca283af80d4e..95d5b941bc1f 100644
--- a/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c
+++ b/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c
@@ -2,8 +2,6 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_endian.h>
 
-int _version SEC("version") = 1;
-
 SEC("sk_skb1")
 int bpf_prog1(struct __sk_buff *skb)
 {
diff --git a/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c b/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c
index eeaf6e75c9a2..80632954c5a1 100644
--- a/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c
+++ b/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c
@@ -3,8 +3,6 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_endian.h>
 
-int _version SEC("version") = 1;
-
 SEC("sk_msg1")
 int bpf_prog1(struct sk_msg_md *msg)
 {
diff --git a/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c b/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c
index 73872c535cbb..e2468a6d01a5 100644
--- a/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c
+++ b/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c
@@ -2,8 +2,6 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_endian.h>
 
-int _version SEC("version") = 1;
-
 struct {
 	__uint(type, BPF_MAP_TYPE_SOCKMAP);
 	__uint(max_entries, 20);
diff --git a/tools/testing/selftests/bpf/progs/sockopt_inherit.c b/tools/testing/selftests/bpf/progs/sockopt_inherit.c
index c6d428a8d785..9fb241b97291 100644
--- a/tools/testing/selftests/bpf/progs/sockopt_inherit.c
+++ b/tools/testing/selftests/bpf/progs/sockopt_inherit.c
@@ -3,7 +3,6 @@
 #include <bpf/bpf_helpers.h>
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = 1;
 
 #define SOL_CUSTOM			0xdeadbeef
 #define CUSTOM_INHERIT1			0
diff --git a/tools/testing/selftests/bpf/progs/tcp_rtt.c b/tools/testing/selftests/bpf/progs/tcp_rtt.c
index 0cb3204ddb18..0988d79f1587 100644
--- a/tools/testing/selftests/bpf/progs/tcp_rtt.c
+++ b/tools/testing/selftests/bpf/progs/tcp_rtt.c
@@ -3,7 +3,6 @@
 #include <bpf/bpf_helpers.h>
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = 1;
 
 struct tcp_rtt_storage {
 	__u32 invoked;
diff --git a/tools/testing/selftests/bpf/progs/test_btf_haskv.c b/tools/testing/selftests/bpf/progs/test_btf_haskv.c
index 31538c9ed193..160ead6c67b2 100644
--- a/tools/testing/selftests/bpf/progs/test_btf_haskv.c
+++ b/tools/testing/selftests/bpf/progs/test_btf_haskv.c
@@ -4,8 +4,6 @@
 #include <bpf/bpf_helpers.h>
 #include "bpf_legacy.h"
 
-int _version SEC("version") = 1;
-
 struct ipv_counts {
 	unsigned int v4;
 	unsigned int v6;
diff --git a/tools/testing/selftests/bpf/progs/test_btf_newkv.c b/tools/testing/selftests/bpf/progs/test_btf_newkv.c
index 6c5560162746..1884a5bd10f5 100644
--- a/tools/testing/selftests/bpf/progs/test_btf_newkv.c
+++ b/tools/testing/selftests/bpf/progs/test_btf_newkv.c
@@ -4,8 +4,6 @@
 #include <bpf/bpf_helpers.h>
 #include "bpf_legacy.h"
 
-int _version SEC("version") = 1;
-
 struct ipv_counts {
 	unsigned int v4;
 	unsigned int v6;
diff --git a/tools/testing/selftests/bpf/progs/test_btf_nokv.c b/tools/testing/selftests/bpf/progs/test_btf_nokv.c
index 506da7fd2da2..15e0f9945fe4 100644
--- a/tools/testing/selftests/bpf/progs/test_btf_nokv.c
+++ b/tools/testing/selftests/bpf/progs/test_btf_nokv.c
@@ -3,8 +3,6 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-int _version SEC("version") = 1;
-
 struct ipv_counts {
 	unsigned int v4;
 	unsigned int v6;
diff --git a/tools/testing/selftests/bpf/progs/test_l4lb.c b/tools/testing/selftests/bpf/progs/test_l4lb.c
index 33493911d87a..04fee08863cb 100644
--- a/tools/testing/selftests/bpf/progs/test_l4lb.c
+++ b/tools/testing/selftests/bpf/progs/test_l4lb.c
@@ -21,8 +21,6 @@
 #include "test_iptunnel_common.h"
 #include <bpf/bpf_endian.h>
 
-int _version SEC("version") = 1;
-
 static inline __u32 rol32(__u32 word, unsigned int shift)
 {
 	return (word << shift) | (word >> ((-shift) & 31));
diff --git a/tools/testing/selftests/bpf/progs/test_map_in_map.c b/tools/testing/selftests/bpf/progs/test_map_in_map.c
index a6d91932dcd5..f416032ba858 100644
--- a/tools/testing/selftests/bpf/progs/test_map_in_map.c
+++ b/tools/testing/selftests/bpf/progs/test_map_in_map.c
@@ -47,5 +47,4 @@ int xdp_mimtest0(struct xdp_md *ctx)
 	return XDP_PASS;
 }
 
-int _version SEC("version") = 1;
 char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_pinning.c b/tools/testing/selftests/bpf/progs/test_pinning.c
index 4ef2630292b2..0facea6cbbae 100644
--- a/tools/testing/selftests/bpf/progs/test_pinning.c
+++ b/tools/testing/selftests/bpf/progs/test_pinning.c
@@ -3,8 +3,6 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-int _version SEC("version") = 1;
-
 struct {
 	__uint(type, BPF_MAP_TYPE_ARRAY);
 	__uint(max_entries, 1);
diff --git a/tools/testing/selftests/bpf/progs/test_pinning_invalid.c b/tools/testing/selftests/bpf/progs/test_pinning_invalid.c
index 5412e0c732c7..2a56db1094b8 100644
--- a/tools/testing/selftests/bpf/progs/test_pinning_invalid.c
+++ b/tools/testing/selftests/bpf/progs/test_pinning_invalid.c
@@ -3,8 +3,6 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-int _version SEC("version") = 1;
-
 struct {
 	__uint(type, BPF_MAP_TYPE_ARRAY);
 	__uint(max_entries, 1);
diff --git a/tools/testing/selftests/bpf/progs/test_pkt_access.c b/tools/testing/selftests/bpf/progs/test_pkt_access.c
index 3cfd88141ddc..0558544e1ff0 100644
--- a/tools/testing/selftests/bpf/progs/test_pkt_access.c
+++ b/tools/testing/selftests/bpf/progs/test_pkt_access.c
@@ -15,7 +15,6 @@
 #include <bpf/bpf_endian.h>
 
 #define barrier() __asm__ __volatile__("": : :"memory")
-int _version SEC("version") = 1;
 
 /* llvm will optimize both subprograms into exactly the same BPF assembly
  *
diff --git a/tools/testing/selftests/bpf/progs/test_queue_stack_map.h b/tools/testing/selftests/bpf/progs/test_queue_stack_map.h
index 4dd9806ad73b..0fcd3ff0e38a 100644
--- a/tools/testing/selftests/bpf/progs/test_queue_stack_map.h
+++ b/tools/testing/selftests/bpf/progs/test_queue_stack_map.h
@@ -8,8 +8,6 @@
 #include <linux/pkt_cls.h>
 #include <bpf/bpf_helpers.h>
 
-int _version SEC("version") = 1;
-
 struct {
 	__uint(type, MAP_TYPE);
 	__uint(max_entries, 32);
diff --git a/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c b/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
index 0f9bc258225e..7d56ed47cd4d 100644
--- a/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
@@ -15,8 +15,6 @@
 #include <bpf/bpf_helpers.h>
 #include "test_select_reuseport_common.h"
 
-int _version SEC("version") = 1;
-
 #ifndef offsetof
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
 #endif
diff --git a/tools/testing/selftests/bpf/progs/test_sk_lookup.c b/tools/testing/selftests/bpf/progs/test_sk_lookup.c
index 48534d810391..19d2465d9442 100644
--- a/tools/testing/selftests/bpf/progs/test_sk_lookup.c
+++ b/tools/testing/selftests/bpf/progs/test_sk_lookup.c
@@ -644,4 +644,3 @@ int multi_prog_redir2(struct bpf_sk_lookup *ctx)
 }
 
 char _license[] SEC("license") = "Dual BSD/GPL";
-__u32 _version SEC("version") = 1;
diff --git a/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c b/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c
index 552f2090665c..c304cd5b8cad 100644
--- a/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_skb_cgroup_id_kern.c
@@ -42,6 +42,4 @@ int log_cgroup_id(struct __sk_buff *skb)
 	return TC_ACT_OK;
 }
 
-int _version SEC("version") = 1;
-
 char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_skb_ctx.c b/tools/testing/selftests/bpf/progs/test_skb_ctx.c
index ba4dab09d19c..1d61b36e6067 100644
--- a/tools/testing/selftests/bpf/progs/test_skb_ctx.c
+++ b/tools/testing/selftests/bpf/progs/test_skb_ctx.c
@@ -3,7 +3,6 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-int _version SEC("version") = 1;
 char _license[] SEC("license") = "GPL";
 
 SEC("skb_ctx")
diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_kern.h b/tools/testing/selftests/bpf/progs/test_sockmap_kern.h
index 1858435de7aa..2966564b8497 100644
--- a/tools/testing/selftests/bpf/progs/test_sockmap_kern.h
+++ b/tools/testing/selftests/bpf/progs/test_sockmap_kern.h
@@ -361,5 +361,4 @@ int bpf_prog10(struct sk_msg_md *msg)
 	return SK_DROP;
 }
 
-int _version SEC("version") = 1;
 char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_sockmap_listen.c b/tools/testing/selftests/bpf/progs/test_sockmap_listen.c
index 00f1456aaeda..325c9f193432 100644
--- a/tools/testing/selftests/bpf/progs/test_sockmap_listen.c
+++ b/tools/testing/selftests/bpf/progs/test_sockmap_listen.c
@@ -116,5 +116,4 @@ int prog_reuseport(struct sk_reuseport_md *reuse)
 	return verdict;
 }
 
-int _version SEC("version") = 1;
 char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
index 7449fdb1763b..36a707e7c7a7 100644
--- a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
@@ -73,4 +73,3 @@ int oncpu(struct random_urandom_args *args)
 }
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = 1; /* ignored by tracepoints, required by libbpf.a */
diff --git a/tools/testing/selftests/bpf/progs/test_tcp_estats.c b/tools/testing/selftests/bpf/progs/test_tcp_estats.c
index adc83a54c352..2c5c602c6011 100644
--- a/tools/testing/selftests/bpf/progs/test_tcp_estats.c
+++ b/tools/testing/selftests/bpf/progs/test_tcp_estats.c
@@ -255,4 +255,3 @@ int _dummy_tracepoint(struct dummy_tracepoint_args *arg)
 }
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = 1; /* ignored by tracepoints, required by libbpf.a */
diff --git a/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c b/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c
index 94f50f7e94d6..3ded05280757 100644
--- a/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c
@@ -16,7 +16,6 @@
 #include "test_tcpbpf.h"
 
 struct tcpbpf_globals global = {};
-int _version SEC("version") = 1;
 
 /**
  * SOL_TCP is defined in <netinet/tcp.h> while
diff --git a/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c b/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
index 24e9344994ef..540181c115a8 100644
--- a/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
@@ -28,8 +28,6 @@ struct {
 	__type(value, __u32);
 } perf_event_map SEC(".maps");
 
-int _version SEC("version") = 1;
-
 SEC("sockops")
 int bpf_testcb(struct bpf_sock_ops *skops)
 {
diff --git a/tools/testing/selftests/bpf/progs/test_tracepoint.c b/tools/testing/selftests/bpf/progs/test_tracepoint.c
index 4b825ee122cf..ce6974016f53 100644
--- a/tools/testing/selftests/bpf/progs/test_tracepoint.c
+++ b/tools/testing/selftests/bpf/progs/test_tracepoint.c
@@ -23,4 +23,3 @@ int oncpu(struct sched_switch_args *ctx)
 }
 
 char _license[] SEC("license") = "GPL";
-__u32 _version SEC("version") = 1; /* ignored by tracepoints, required by libbpf.a */
diff --git a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
index e7b673117436..ef0dde83b85a 100644
--- a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
@@ -26,8 +26,6 @@
 		bpf_trace_printk(fmt, sizeof(fmt), __LINE__, ret); \
 	} while (0)
 
-int _version SEC("version") = 1;
-
 struct geneve_opt {
 	__be16	opt_class;
 	__u8	type;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp.c b/tools/testing/selftests/bpf/progs/test_xdp.c
index e6aa2fc6ce6b..d7a9a74b7245 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp.c
@@ -20,8 +20,6 @@
 #include <bpf/bpf_endian.h>
 #include "test_iptunnel_common.h"
 
-int _version SEC("version") = 1;
-
 struct {
 	__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
 	__uint(max_entries, 256);
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_loop.c b/tools/testing/selftests/bpf/progs/test_xdp_loop.c
index 27eb52dda92c..c98fb44156f0 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_loop.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_loop.c
@@ -16,8 +16,6 @@
 #include <bpf/bpf_endian.h>
 #include "test_iptunnel_common.h"
 
-int _version SEC("version") = 1;
-
 struct {
 	__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
 	__uint(max_entries, 256);
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_redirect.c b/tools/testing/selftests/bpf/progs/test_xdp_redirect.c
index a5337cd9400b..b778cad45485 100644
--- a/tools/testing/selftests/bpf/progs/test_xdp_redirect.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_redirect.c
@@ -12,8 +12,6 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-int _version SEC("version") = 1;
-
 SEC("redirect_to_111")
 int xdp_redirect_to_111(struct xdp_md *xdp)
 {
-- 
cgit v1.2.3


From 45d45e5323a9dab88ab1b50264d1e19242935176 Mon Sep 17 00:00:00 2001
From: Amit Cohen <amcohen@nvidia.com>
Date: Fri, 8 Oct 2021 16:12:34 +0300
Subject: testing: selftests: forwarding.config.sample: Add tc flag

Add TC_FLAG value to tests topology.
This flag supposed to be skip_sw/skip_hw which means do not filter by
software/hardware.

This can be useful for adding tests to forwarding directory, and be able
to verify that packets go through the hardware.

When the flag is not set or set to 'skip_hw', tests can still be executed
with veth pairs.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/forwarding/forwarding.config.sample | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/forwarding/forwarding.config.sample b/tools/testing/selftests/net/forwarding/forwarding.config.sample
index b802c14d2950..10ce3720aa6f 100644
--- a/tools/testing/selftests/net/forwarding/forwarding.config.sample
+++ b/tools/testing/selftests/net/forwarding/forwarding.config.sample
@@ -39,3 +39,6 @@ NETIF_CREATE=yes
 # Timeout (in seconds) before ping exits regardless of how many packets have
 # been sent or received
 PING_TIMEOUT=5
+# Flag for tc match, supposed to be skip_sw/skip_hw which means do not process
+# filter by software/hardware
+TC_FLAG=skip_hw
-- 
cgit v1.2.3


From c08d227290f618ada4028f0303743263cc026dd9 Mon Sep 17 00:00:00 2001
From: Amit Cohen <amcohen@nvidia.com>
Date: Fri, 8 Oct 2021 16:12:35 +0300
Subject: testing: selftests: tc_common: Add tc_check_at_least_x_packets()

Add function that checks that at least X packets hit the tc rule.
There are cases that it is not possible to catch only the interesting
packets, so then, it is possible to send many packets and verify that at
least this amount of packets hit the rule.

This function will be used in the next patch for general tc rule that
can be used to test both software and hardware.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/forwarding/tc_common.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/forwarding/tc_common.sh b/tools/testing/selftests/net/forwarding/tc_common.sh
index 0e18e8be6e2a..bce8bb8d2b6f 100644
--- a/tools/testing/selftests/net/forwarding/tc_common.sh
+++ b/tools/testing/selftests/net/forwarding/tc_common.sh
@@ -16,6 +16,16 @@ tc_check_packets()
 		 tc_rule_handle_stats_get "$id" "$handle" > /dev/null
 }
 
+tc_check_at_least_x_packets()
+{
+	local id=$1
+	local handle=$2
+	local count=$3
+
+	busywait "$TC_HIT_TIMEOUT" until_counter_is ">= $count" \
+		 tc_rule_handle_stats_get "$id" "$handle" > /dev/null
+}
+
 tc_check_packets_hitting()
 {
 	local id=$1
-- 
cgit v1.2.3


From 7df29960fa65bb11a5571468056155ca04d8f6df Mon Sep 17 00:00:00 2001
From: Amit Cohen <amcohen@nvidia.com>
Date: Fri, 8 Oct 2021 16:12:36 +0300
Subject: selftests: forwarding: Add IPv6 GRE flat tests

Add tests that check IPv6-in-IPv6, IPv4-in-IPv6 and MTU change of GRE
tunnel. The tests use flat model - overlay and underlay share the same VRF.

These tests can be run with TC_FLAG=skip_sw, so then they will verify
that packets go through hardware as part of enacp and decap phases.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../selftests/net/forwarding/ip6gre_flat.sh        |  65 +++++
 .../selftests/net/forwarding/ip6gre_flat_key.sh    |  65 +++++
 .../selftests/net/forwarding/ip6gre_flat_keys.sh   |  65 +++++
 .../testing/selftests/net/forwarding/ip6gre_lib.sh | 270 +++++++++++++++++++++
 4 files changed, 465 insertions(+)
 create mode 100755 tools/testing/selftests/net/forwarding/ip6gre_flat.sh
 create mode 100755 tools/testing/selftests/net/forwarding/ip6gre_flat_key.sh
 create mode 100755 tools/testing/selftests/net/forwarding/ip6gre_flat_keys.sh
 create mode 100644 tools/testing/selftests/net/forwarding/ip6gre_lib.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/forwarding/ip6gre_flat.sh b/tools/testing/selftests/net/forwarding/ip6gre_flat.sh
new file mode 100755
index 000000000000..96c97064f2d3
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/ip6gre_flat.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test IP-in-IP GRE tunnel without key.
+# This test uses flat topology for IP tunneling tests. See ip6gre_lib.sh for
+# more details.
+
+ALL_TESTS="
+	gre_flat
+	gre_mtu_change
+"
+
+NUM_NETIFS=6
+source lib.sh
+source ip6gre_lib.sh
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	ol1=${NETIFS[p2]}
+
+	ul1=${NETIFS[p3]}
+	ul2=${NETIFS[p4]}
+
+	ol2=${NETIFS[p5]}
+	h2=${NETIFS[p6]}
+
+	forwarding_enable
+	vrf_prepare
+	h1_create
+	h2_create
+	sw1_flat_create $ol1 $ul1
+	sw2_flat_create $ol2 $ul2
+}
+
+gre_flat()
+{
+	test_traffic_ip4ip6 "GRE flat IPv4-in-IPv6"
+	test_traffic_ip6ip6 "GRE flat IPv6-in-IPv6"
+}
+
+gre_mtu_change()
+{
+	test_mtu_change
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	sw2_flat_destroy $ol2 $ul2
+	sw1_flat_destroy $ol1 $ul1
+	h2_destroy
+	h1_destroy
+	vrf_cleanup
+	forwarding_restore
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+tests_run
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/net/forwarding/ip6gre_flat_key.sh b/tools/testing/selftests/net/forwarding/ip6gre_flat_key.sh
new file mode 100755
index 000000000000..ff9fb0db9bd1
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/ip6gre_flat_key.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test IP-in-IP GRE tunnel with key.
+# This test uses flat topology for IP tunneling tests. See ip6gre_lib.sh for
+# more details.
+
+ALL_TESTS="
+	gre_flat
+	gre_mtu_change
+"
+
+NUM_NETIFS=6
+source lib.sh
+source ip6gre_lib.sh
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	ol1=${NETIFS[p2]}
+
+	ul1=${NETIFS[p3]}
+	ul2=${NETIFS[p4]}
+
+	ol2=${NETIFS[p5]}
+	h2=${NETIFS[p6]}
+
+	forwarding_enable
+	vrf_prepare
+	h1_create
+	h2_create
+	sw1_flat_create $ol1 $ul1 key 233
+	sw2_flat_create $ol2 $ul2 key 233
+}
+
+gre_flat()
+{
+	test_traffic_ip4ip6 "GRE flat IPv4-in-IPv6 with key"
+	test_traffic_ip6ip6 "GRE flat IPv6-in-IPv6 with key"
+}
+
+gre_mtu_change()
+{
+	test_mtu_change
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	sw2_flat_destroy $ol2 $ul2
+	sw1_flat_destroy $ol1 $ul1
+	h2_destroy
+	h1_destroy
+	vrf_cleanup
+	forwarding_restore
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+tests_run
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/net/forwarding/ip6gre_flat_keys.sh b/tools/testing/selftests/net/forwarding/ip6gre_flat_keys.sh
new file mode 100755
index 000000000000..12c138785242
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/ip6gre_flat_keys.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test IP-in-IP GRE tunnel with keys.
+# This test uses flat topology for IP tunneling tests. See ip6gre_lib.sh for
+# more details.
+
+ALL_TESTS="
+	gre_flat
+	gre_mtu_change
+"
+
+NUM_NETIFS=6
+source lib.sh
+source ip6gre_lib.sh
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	ol1=${NETIFS[p2]}
+
+	ul1=${NETIFS[p3]}
+	ul2=${NETIFS[p4]}
+
+	ol2=${NETIFS[p5]}
+	h2=${NETIFS[p6]}
+
+	forwarding_enable
+	vrf_prepare
+	h1_create
+	h2_create
+	sw1_flat_create $ol1 $ul1 ikey 111 okey 222
+	sw2_flat_create $ol2 $ul2 ikey 222 okey 111
+}
+
+gre_flat()
+{
+	test_traffic_ip4ip6 "GRE flat IPv4-in-IPv6 with ikey/okey"
+	test_traffic_ip6ip6 "GRE flat IPv6-in-IPv6 with ikey/okey"
+}
+
+gre_mtu_change()
+{
+	test_mtu_change	gre
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	sw2_flat_destroy $ol2 $ul2
+	sw1_flat_destroy $ol1 $ul1
+	h2_destroy
+	h1_destroy
+	vrf_cleanup
+	forwarding_restore
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+tests_run
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/net/forwarding/ip6gre_lib.sh b/tools/testing/selftests/net/forwarding/ip6gre_lib.sh
new file mode 100644
index 000000000000..2a5b2126b674
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/ip6gre_lib.sh
@@ -0,0 +1,270 @@
+# SPDX-License-Identifier: GPL-2.0
+#!/bin/bash
+
+# Handles creation and destruction of IP-in-IP or GRE tunnels over the given
+# topology.
+#
+# Flat Model:
+# Overlay and underlay share the same VRF.
+# SW1 uses default VRF so tunnel has no bound dev.
+# SW2 uses non-default VRF tunnel has a bound dev.
+# +--------------------------------+
+# | H1                             |
+# |                     $h1 +      |
+# |        198.51.100.1/24  |      |
+# |        2001:db8:1::1/64 |      |
+# +-------------------------|------+
+#                           |
+# +-------------------------|-------------------+
+# | SW1                     |                   |
+# |                    $ol1 +                   |
+# |        198.51.100.2/24                      |
+# |        2001:db8:1::2/64                     |
+# |                                             |
+# |      + g1a (ip6gre)                         |
+# |        loc=2001:db8:3::1                    |
+# |        rem=2001:db8:3::2 --.                |
+# |        tos=inherit         |                |
+# |                            .                |
+# |      .---------------------                 |
+# |      |                                      |
+# |      v                                      |
+# |      + $ul1.111 (vlan)                      |
+# |      | 2001:db8:10::1/64                    |
+# |       \                                     |
+# |        \____________                        |
+# |                     |                       |
+# | VRF default         + $ul1                  |
+# +---------------------|-----------------------+
+#                       |
+# +---------------------|-----------------------+
+# | SW2                 |                       |
+# |                $ul2 +                       |
+# |          ___________|                       |
+# |         /                                   |
+# |        /                                    |
+# |       + $ul2.111 (vlan)                     |
+# |       ^ 2001:db8:10::2/64                   |
+# |       |                                     |
+# |       |                                     |
+# |       '----------------------.              |
+# |       + g2a (ip6gre)         |              |
+# |         loc=2001:db8:3::2    |              |
+# |         rem=2001:db8:3::1  --'              |
+# |         tos=inherit                         |
+# |                                             |
+# |                     + $ol2                  |
+# |                     | 203.0.113.2/24        |
+# | VRF v$ol2           | 2001:db8:2::2/64      |
+# +---------------------|-----------------------+
+# +---------------------|----------+
+# | H2                  |          |
+# |                 $h2 +          |
+# |    203.0.113.1/24              |
+# |    2001:db8:2::1/64            |
+# +--------------------------------+
+
+source lib.sh
+source tc_common.sh
+
+h1_create()
+{
+	simple_if_init $h1 198.51.100.1/24 2001:db8:1::1/64
+	ip route add vrf v$h1 203.0.113.0/24 via 198.51.100.2
+	ip -6 route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2
+}
+
+h1_destroy()
+{
+	ip -6 route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2
+	ip route del vrf v$h1 203.0.113.0/24 via 198.51.100.2
+	simple_if_fini $h1 198.51.100.1/24 2001:db8:1::1/64
+}
+
+h2_create()
+{
+	simple_if_init $h2 203.0.113.1/24 2001:db8:2::1/64
+	ip route add vrf v$h2 198.51.100.0/24 via 203.0.113.2
+	ip -6 route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::2
+}
+
+h2_destroy()
+{
+	ip -6 route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::2
+	ip route del vrf v$h2 198.51.100.0/24 via 203.0.113.2
+	simple_if_fini $h2 203.0.113.1/24 2001:db8:2::1/64
+}
+
+sw1_flat_create()
+{
+	local ol1=$1; shift
+	local ul1=$1; shift
+
+	ip link set dev $ol1 up
+        __addr_add_del $ol1 add 198.51.100.2/24 2001:db8:1::2/64
+
+	ip link set dev $ul1 up
+	vlan_create $ul1 111 "" 2001:db8:10::1/64
+
+	tunnel_create g1a ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \
+		ttl inherit "$@"
+	ip link set dev g1a up
+        __addr_add_del g1a add "2001:db8:3::1/128"
+
+	ip -6 route add 2001:db8:3::2/128 via 2001:db8:10::2
+	ip route add 203.0.113.0/24 dev g1a
+	ip -6 route add 2001:db8:2::/64 dev g1a
+}
+
+sw1_flat_destroy()
+{
+	local ol1=$1; shift
+	local ul1=$1; shift
+
+	ip -6 route del 2001:db8:2::/64
+	ip route del 203.0.113.0/24
+	ip -6 route del 2001:db8:3::2/128 via 2001:db8:10::2
+
+	__simple_if_fini g1a 2001:db8:3::1/128
+	tunnel_destroy g1a
+
+	vlan_destroy $ul1 111
+	__simple_if_fini $ul1
+	__simple_if_fini $ol1 198.51.100.2/24 2001:db8:1::2/64
+}
+
+sw2_flat_create()
+{
+	local ol2=$1; shift
+	local ul2=$1; shift
+
+	simple_if_init $ol2 203.0.113.2/24 2001:db8:2::2/64
+	__simple_if_init $ul2 v$ol2
+	vlan_create $ul2 111 v$ol2 2001:db8:10::2/64
+
+	tunnel_create g2a ip6gre 2001:db8:3::2 2001:db8:3::1 tos inherit \
+		ttl inherit dev v$ol2 "$@"
+	__simple_if_init g2a v$ol2 2001:db8:3::2/128
+
+	# Replace neighbor to avoid 1 dropped packet due to "unresolved neigh"
+	ip neigh replace dev $ol2 203.0.113.1 lladdr $(mac_get $h2)
+	ip -6 neigh replace dev $ol2 2001:db8:2::1 lladdr $(mac_get $h2)
+
+	ip -6 route add vrf v$ol2 2001:db8:3::1/128 via 2001:db8:10::1
+	ip route add vrf v$ol2 198.51.100.0/24 dev g2a
+	ip -6 route add vrf v$ol2 2001:db8:1::/64 dev g2a
+}
+
+sw2_flat_destroy()
+{
+	local ol2=$1; shift
+	local ul2=$1; shift
+
+	ip -6 route del vrf v$ol2 2001:db8:2::/64
+	ip route del vrf v$ol2 198.51.100.0/24
+	ip -6 route del vrf v$ol2 2001:db8:3::1/128 via 2001:db8:10::1
+
+	__simple_if_fini g2a 2001:db8:3::2/128
+	tunnel_destroy g2a
+
+	vlan_destroy $ul2 111
+	__simple_if_fini $ul2
+	simple_if_fini $ol2 203.0.113.2/24 2001:db8:2::2/64
+}
+
+test_traffic_ip4ip6()
+{
+	RET=0
+
+	h1mac=$(mac_get $h1)
+	ol1mac=$(mac_get $ol1)
+
+	tc qdisc add dev $ul1 clsact
+	tc filter add dev $ul1 egress proto all pref 1 handle 101 \
+		flower $TC_FLAG action pass
+
+	tc qdisc add dev $ol2 clsact
+	tc filter add dev $ol2 egress protocol ipv4 pref 1 handle 101 \
+		flower $TC_FLAG dst_ip 203.0.113.1 action pass
+
+	$MZ $h1 -c 1000 -p 64 -a $h1mac -b $ol1mac -A 198.51.100.1 \
+		-B 203.0.113.1 -t ip -q -d 1msec
+
+	# Check ports after encap and after decap.
+	tc_check_at_least_x_packets "dev $ul1 egress" 101 1000
+	check_err $? "Packets did not go through $ul1, tc_flag = $TC_FLAG"
+
+	tc_check_at_least_x_packets "dev $ol2 egress" 101 1000
+	check_err $? "Packets did not go through $ol2, tc_flag = $TC_FLAG"
+
+	log_test "$@"
+
+	tc filter del dev $ol2 egress protocol ipv4 pref 1 handle 101 flower
+	tc qdisc del dev $ol2 clsact
+	tc filter del dev $ul1 egress proto all pref 1 handle 101 flower
+	tc qdisc del dev $ul1 clsact
+}
+
+test_traffic_ip6ip6()
+{
+	RET=0
+
+	h1mac=$(mac_get $h1)
+	ol1mac=$(mac_get $ol1)
+
+	tc qdisc add dev $ul1 clsact
+	tc filter add dev $ul1 egress proto all pref 1 handle 101 \
+		flower $TC_FLAG action pass
+
+	tc qdisc add dev $ol2 clsact
+	tc filter add dev $ol2 egress protocol ipv6 pref 1 handle 101 \
+		flower $TC_FLAG dst_ip 2001:db8:2::1 action pass
+
+	$MZ -6 $h1 -c 1000 -p 64 -a $h1mac -b $ol1mac -A 2001:db8:1::1 \
+		-B 2001:db8:2::1 -t ip -q -d 1msec
+
+	# Check ports after encap and after decap.
+	tc_check_at_least_x_packets "dev $ul1 egress" 101 1000
+	check_err $? "Packets did not go through $ul1, tc_flag = $TC_FLAG"
+
+	tc_check_at_least_x_packets "dev $ol2 egress" 101 1000
+	check_err $? "Packets did not go through $ol2, tc_flag = $TC_FLAG"
+
+	log_test "$@"
+
+	tc filter del dev $ol2 egress protocol ipv6 pref 1 handle 101 flower
+	tc qdisc del dev $ol2 clsact
+	tc filter del dev $ul1 egress proto all pref 1 handle 101 flower
+	tc qdisc del dev $ul1 clsact
+}
+
+topo_mtu_change()
+{
+	local mtu=$1
+
+	ip link set mtu $mtu dev $h1
+	ip link set mtu $mtu dev $ol1
+	ip link set mtu $mtu dev g1a
+	ip link set mtu $mtu dev $ul1
+	ip link set mtu $mtu dev $ul1.111
+	ip link set mtu $mtu dev $h2
+	ip link set mtu $mtu dev $ol2
+	ip link set mtu $mtu dev g2a
+	ip link set mtu $mtu dev $ul2
+	ip link set mtu $mtu dev $ul2.111
+}
+
+test_mtu_change()
+{
+	RET=0
+
+	ping6_do $h1 2001:db8:2::1 "-s 1800 -w 3"
+	check_fail $? "ping GRE IPv6 should not pass with packet size 1800"
+
+	RET=0
+
+	topo_mtu_change	2000
+	ping6_do $h1 2001:db8:2::1 "-s 1800 -w 3"
+	check_err $?
+	log_test "ping GRE IPv6, packet size 1800 after MTU change"
+}
-- 
cgit v1.2.3


From 4b3d967b5cb99a445a2d55478035308f000cd568 Mon Sep 17 00:00:00 2001
From: Amit Cohen <amcohen@nvidia.com>
Date: Fri, 8 Oct 2021 16:12:37 +0300
Subject: selftests: forwarding: Add IPv6 GRE hierarchical tests

Add tests that check IPv6-in-IPv6, IPv4-in-IPv6 and MTU change of GRE
tunnel. The tests use hierarchical model - the tunnel is bound to a device
in a different VRF.

These tests can be run with TC_FLAG=skip_sw, so then they will verify
that packets go through hardware as part of enacp and decap phases.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../selftests/net/forwarding/ip6gre_hier.sh        |  65 ++++++++
 .../selftests/net/forwarding/ip6gre_hier_key.sh    |  65 ++++++++
 .../selftests/net/forwarding/ip6gre_hier_keys.sh   |  65 ++++++++
 .../testing/selftests/net/forwarding/ip6gre_lib.sh | 170 ++++++++++++++++++++-
 4 files changed, 364 insertions(+), 1 deletion(-)
 create mode 100755 tools/testing/selftests/net/forwarding/ip6gre_hier.sh
 create mode 100755 tools/testing/selftests/net/forwarding/ip6gre_hier_key.sh
 create mode 100755 tools/testing/selftests/net/forwarding/ip6gre_hier_keys.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/forwarding/ip6gre_hier.sh b/tools/testing/selftests/net/forwarding/ip6gre_hier.sh
new file mode 100755
index 000000000000..83b55c30a5c3
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/ip6gre_hier.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test IP-in-IP GRE tunnels without key.
+# This test uses hierarchical topology for IP tunneling tests. See
+# ip6gre_lib.sh for more details.
+
+ALL_TESTS="
+	gre_hier
+	gre_mtu_change
+"
+
+NUM_NETIFS=6
+source lib.sh
+source ip6gre_lib.sh
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	ol1=${NETIFS[p2]}
+
+	ul1=${NETIFS[p3]}
+	ul2=${NETIFS[p4]}
+
+	ol2=${NETIFS[p5]}
+	h2=${NETIFS[p6]}
+
+	forwarding_enable
+	vrf_prepare
+	h1_create
+	h2_create
+	sw1_hierarchical_create $ol1 $ul1
+	sw2_hierarchical_create $ol2 $ul2
+}
+
+gre_hier()
+{
+	test_traffic_ip4ip6 "GRE hierarchical IPv4-in-IPv6"
+	test_traffic_ip6ip6 "GRE hierarchical IPv6-in-IPv6"
+}
+
+gre_mtu_change()
+{
+	test_mtu_change gre
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	sw2_hierarchical_destroy $ol2 $ul2
+	sw1_hierarchical_destroy $ol1 $ul1
+	h2_destroy
+	h1_destroy
+	vrf_cleanup
+	forwarding_restore
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+tests_run
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/net/forwarding/ip6gre_hier_key.sh b/tools/testing/selftests/net/forwarding/ip6gre_hier_key.sh
new file mode 100755
index 000000000000..256607916d92
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/ip6gre_hier_key.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test IP-in-IP GRE tunnels without key.
+# This test uses hierarchical topology for IP tunneling tests. See
+# ip6gre_lib.sh for more details.
+
+ALL_TESTS="
+	gre_hier
+	gre_mtu_change
+"
+
+NUM_NETIFS=6
+source lib.sh
+source ip6gre_lib.sh
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	ol1=${NETIFS[p2]}
+
+	ul1=${NETIFS[p3]}
+	ul2=${NETIFS[p4]}
+
+	ol2=${NETIFS[p5]}
+	h2=${NETIFS[p6]}
+
+	forwarding_enable
+	vrf_prepare
+	h1_create
+	h2_create
+	sw1_hierarchical_create $ol1 $ul1 key 22
+	sw2_hierarchical_create $ol2 $ul2 key 22
+}
+
+gre_hier()
+{
+	test_traffic_ip4ip6 "GRE hierarchical IPv4-in-IPv6 with key"
+	test_traffic_ip6ip6 "GRE hierarchical IPv6-in-IPv6 with key"
+}
+
+gre_mtu_change()
+{
+	test_mtu_change gre
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	sw2_hierarchical_destroy $ol2 $ul2
+	sw1_hierarchical_destroy $ol1 $ul1
+	h2_destroy
+	h1_destroy
+	vrf_cleanup
+	forwarding_restore
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+tests_run
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/net/forwarding/ip6gre_hier_keys.sh b/tools/testing/selftests/net/forwarding/ip6gre_hier_keys.sh
new file mode 100755
index 000000000000..ad1bcd6334a8
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/ip6gre_hier_keys.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test IP-in-IP GRE tunnels without key.
+# This test uses hierarchical topology for IP tunneling tests. See
+# ip6gre_lib.sh for more details.
+
+ALL_TESTS="
+	gre_hier
+	gre_mtu_change
+"
+
+NUM_NETIFS=6
+source lib.sh
+source ip6gre_lib.sh
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	ol1=${NETIFS[p2]}
+
+	ul1=${NETIFS[p3]}
+	ul2=${NETIFS[p4]}
+
+	ol2=${NETIFS[p5]}
+	h2=${NETIFS[p6]}
+
+	forwarding_enable
+	vrf_prepare
+	h1_create
+	h2_create
+	sw1_hierarchical_create $ol1 $ul1 ikey 111 okey 222
+	sw2_hierarchical_create $ol2 $ul2 ikey 222 okey 111
+}
+
+gre_hier()
+{
+	test_traffic_ip4ip6 "GRE hierarchical IPv4-in-IPv6 with ikey/okey"
+	test_traffic_ip6ip6 "GRE hierarchical IPv6-in-IPv6 with ikey/okey"
+}
+
+gre_mtu_change()
+{
+	test_mtu_change gre
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	sw2_hierarchical_destroy $ol2 $ul2
+	sw1_hierarchical_destroy $ol1 $ul1
+	h2_destroy
+	h1_destroy
+	vrf_cleanup
+	forwarding_restore
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+tests_run
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/net/forwarding/ip6gre_lib.sh b/tools/testing/selftests/net/forwarding/ip6gre_lib.sh
index 2a5b2126b674..58a3597037b1 100644
--- a/tools/testing/selftests/net/forwarding/ip6gre_lib.sh
+++ b/tools/testing/selftests/net/forwarding/ip6gre_lib.sh
@@ -2,7 +2,7 @@
 #!/bin/bash
 
 # Handles creation and destruction of IP-in-IP or GRE tunnels over the given
-# topology.
+# topology. Supports both flat and hierarchical models.
 #
 # Flat Model:
 # Overlay and underlay share the same VRF.
@@ -63,6 +63,91 @@
 # |    203.0.113.1/24              |
 # |    2001:db8:2::1/64            |
 # +--------------------------------+
+#
+# Hierarchical model:
+# The tunnel is bound to a device in a different VRF
+#
+# +--------------------------------+
+# | H1                             |
+# |                     $h1 +      |
+# |        198.51.100.1/24  |      |
+# |        2001:db8:1::1/64 |      |
+# +-------------------------|------+
+#                           |
+# +-------------------------|-------------------+
+# | SW1                     |                   |
+# | +-----------------------|-----------------+ |
+# | |                  $ol1 +                 | |
+# | |      198.51.100.2/24                    | |
+# | |      2001:db8:1::2/64                   | |
+# | |                                         | |
+# | |              + g1a (ip6gre)             | |
+# | |                loc=2001:db8:3::1        | |
+# | |                rem=2001:db8:3::2        | |
+# | |                tos=inherit              | |
+# | |                    ^                    | |
+# | |   VRF v$ol1        |                    | |
+# | +--------------------|--------------------+ |
+# |                      |                      |
+# | +--------------------|--------------------+ |
+# | |   VRF v$ul1        |                    | |
+# | |                    |                    | |
+# | |                    v                    | |
+# | |             dummy1 +                    | |
+# | |       2001:db8:3::1/64                  | |
+# | |         .-----------'                   | |
+# | |         |                               | |
+# | |         v                               | |
+# | |         + $ul1.111 (vlan)               | |
+# | |         | 2001:db8:10::1/64             | |
+# | |         \                               | |
+# | |          \__________                    | |
+# | |                     |                   | |
+# | |                     + $ul1              | |
+# | +---------------------|-------------------+ |
+# +-----------------------|---------------------+
+#                         |
+# +-----------------------|---------------------+
+# | SW2                   |                     |
+# | +---------------------|-------------------+ |
+# | |                     + $ul2              | |
+# | |                _____|                   | |
+# | |               /                         | |
+# | |              /                          | |
+# | |              | $ul2.111 (vlan)          | |
+# | |              + 2001:db8:10::2/64        | |
+# | |              ^                          | |
+# | |              |                          | |
+# | |              '------.                   | |
+# | |              dummy2 +                   | |
+# | |              2001:db8:3::2/64           | |
+# | |                     ^                   | |
+# | |                     |                   | |
+# | |                     |                   | |
+# | | VRF v$ul2           |                   | |
+# | +---------------------|-------------------+ |
+# |                       |                     |
+# | +---------------------|-------------------+ |
+# | | VRF v$ol2           |                   | |
+# | |                     |                   | |
+# | |                     v                   | |
+# | |        g2a (ip6gre) +                   | |
+# | |        loc=2001:db8:3::2                | |
+# | |        rem=2001:db8:3::1                | |
+# | |        tos=inherit                      | |
+# | |                                         | |
+# | |                $ol2 +                   | |
+# | |    203.0.113.2/24   |                   | |
+# | |    2001:db8:2::2/64 |                   | |
+# | +---------------------|-------------------+ |
+# +-----------------------|---------------------+
+#                         |
+# +-----------------------|--------+
+# | H2                    |        |
+# |                   $h2 +        |
+# |      203.0.113.1/24            |
+# |      2001:db8:2::1/64          |
+# +--------------------------------+
 
 source lib.sh
 source tc_common.sh
@@ -172,6 +257,89 @@ sw2_flat_destroy()
 	simple_if_fini $ol2 203.0.113.2/24 2001:db8:2::2/64
 }
 
+sw1_hierarchical_create()
+{
+	local ol1=$1; shift
+	local ul1=$1; shift
+
+	simple_if_init $ol1 198.51.100.2/24 2001:db8:1::2/64
+	simple_if_init $ul1
+	ip link add name dummy1 type dummy
+	__simple_if_init dummy1 v$ul1 2001:db8:3::1/64
+
+	vlan_create $ul1 111 v$ul1 2001:db8:10::1/64
+	tunnel_create g1a ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \
+		ttl inherit dev dummy1 "$@"
+	ip link set dev g1a master v$ol1
+
+	ip -6 route add vrf v$ul1 2001:db8:3::2/128 via 2001:db8:10::2
+	ip route add vrf v$ol1 203.0.113.0/24 dev g1a
+	ip -6 route add vrf v$ol1 2001:db8:2::/64 dev g1a
+}
+
+sw1_hierarchical_destroy()
+{
+	local ol1=$1; shift
+	local ul1=$1; shift
+
+	ip -6 route del vrf v$ol1 2001:db8:2::/64
+	ip route del vrf v$ol1 203.0.113.0/24
+	ip -6 route del vrf v$ul1 2001:db8:3::2/128
+
+	tunnel_destroy g1a
+	vlan_destroy $ul1 111
+
+	__simple_if_fini dummy1 2001:db8:3::1/64
+	ip link del dev dummy1
+
+	simple_if_fini $ul1
+	simple_if_fini $ol1 198.51.100.2/24 2001:db8:1::2/64
+}
+
+sw2_hierarchical_create()
+{
+	local ol2=$1; shift
+	local ul2=$1; shift
+
+	simple_if_init $ol2 203.0.113.2/24 2001:db8:2::2/64
+	simple_if_init $ul2
+
+	ip link add name dummy2 type dummy
+	__simple_if_init dummy2 v$ul2 2001:db8:3::2/64
+
+	vlan_create $ul2 111 v$ul2 2001:db8:10::2/64
+	tunnel_create g2a ip6gre 2001:db8:3::2 2001:db8:3::1 tos inherit \
+		ttl inherit dev dummy2 "$@"
+	ip link set dev g2a master v$ol2
+
+	# Replace neighbor to avoid 1 dropped packet due to "unresolved neigh"
+	ip neigh replace dev $ol2 203.0.113.1 lladdr $(mac_get $h2)
+	ip -6 neigh replace dev $ol2 2001:db8:2::1 lladdr $(mac_get $h2)
+
+	ip -6 route add vrf v$ul2 2001:db8:3::1/128 via 2001:db8:10::1
+	ip route add vrf v$ol2 198.51.100.0/24 dev g2a
+	ip -6 route add vrf v$ol2 2001:db8:1::/64 dev g2a
+}
+
+sw2_hierarchical_destroy()
+{
+	local ol2=$1; shift
+	local ul2=$1; shift
+
+	ip -6 route del vrf v$ol2 2001:db8:2::/64
+	ip route del vrf v$ol2 198.51.100.0/24
+	ip -6 route del vrf v$ul2 2001:db8:3::1/128
+
+	tunnel_destroy g2a
+	vlan_destroy $ul2 111
+
+	__simple_if_fini dummy2 2001:db8:3::2/64
+	ip link del dev dummy2
+
+	simple_if_fini $ul2
+	simple_if_fini $ol2 203.0.113.2/24 2001:db8:2::2/64
+}
+
 test_traffic_ip4ip6()
 {
 	RET=0
-- 
cgit v1.2.3


From 4bb6cce00a2bef813a2457cd998f90ec9c30b6d0 Mon Sep 17 00:00:00 2001
From: Amit Cohen <amcohen@nvidia.com>
Date: Fri, 8 Oct 2021 16:12:38 +0300
Subject: selftests: mlxsw: devlink_trap_tunnel_ipip6: Add test case for IPv6
 decap_error

IPv6 underlay support was added, add test to check that "decap_error" trap
is triggered under the right conditions and that devlink counters increase.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../mlxsw/spectrum-2/devlink_trap_tunnel_ipip6.sh  | 250 +++++++++++++++++++++
 1 file changed, 250 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/mlxsw/spectrum-2/devlink_trap_tunnel_ipip6.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/devlink_trap_tunnel_ipip6.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/devlink_trap_tunnel_ipip6.sh
new file mode 100755
index 000000000000..f62ce479c266
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/devlink_trap_tunnel_ipip6.sh
@@ -0,0 +1,250 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Test devlink-trap tunnel exceptions functionality over mlxsw.
+# Check all exception traps to make sure they are triggered under the right
+# conditions.
+
+# +-------------------------+
+# | H1                      |
+# |               $h1 +     |
+# |  2001:db8:1::1/64 |     |
+# +-------------------|-----+
+#                     |
+# +-------------------|-----+
+# | SW1               |     |
+# |             $swp1 +     |
+# |  2001:db8:1::2/64       |
+# |                         |
+# |  + g1 (ip6gre)          |
+# |    loc=2001:db8:3::1    |
+# |    rem=2001:db8:3::2    |
+# |    tos=inherit          |
+# |                         |
+# |  + $rp1                 |
+# |  | 2001:db8:10::1/64    |
+# +--|----------------------+
+#    |
+# +--|----------------------+
+# |  |                 VRF2 |
+# |  + $rp2                 |
+# |    2001:db8:10::2/64    |
+# +-------------------------+
+
+lib_dir=$(dirname $0)/../../../../net/forwarding
+
+ALL_TESTS="
+	decap_error_test
+"
+
+NUM_NETIFS=4
+source $lib_dir/lib.sh
+source $lib_dir/tc_common.sh
+source $lib_dir/devlink_lib.sh
+
+h1_create()
+{
+	simple_if_init $h1 2001:db8:1::1/64
+}
+
+h1_destroy()
+{
+	simple_if_fini $h1 2001:db8:1::1/64
+}
+
+vrf2_create()
+{
+	simple_if_init $rp2 2001:db8:10::2/64
+}
+
+vrf2_destroy()
+{
+	simple_if_fini $rp2 2001:db8:10::2/64
+}
+
+switch_create()
+{
+	ip link set dev $swp1 up
+	__addr_add_del $swp1 add 2001:db8:1::2/64
+	tc qdisc add dev $swp1 clsact
+
+	tunnel_create g1 ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \
+		ttl inherit
+	ip link set dev g1 up
+	__addr_add_del g1 add 2001:db8:3::1/128
+
+	ip link set dev $rp1 up
+	__addr_add_del $rp1 add 2001:db8:10::1/64
+}
+
+switch_destroy()
+{
+	__addr_add_del $rp1 del 2001:db8:10::1/64
+	ip link set dev $rp1 down
+
+	__addr_add_del g1 del 2001:db8:3::1/128
+	ip link set dev g1 down
+	tunnel_destroy g1
+
+	tc qdisc del dev $swp1 clsact
+	__addr_add_del $swp1 del 2001:db8:1::2/64
+	ip link set dev $swp1 down
+}
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	swp1=${NETIFS[p2]}
+
+	rp1=${NETIFS[p3]}
+	rp2=${NETIFS[p4]}
+
+	forwarding_enable
+	vrf_prepare
+	h1_create
+	switch_create
+	vrf2_create
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	vrf2_destroy
+	switch_destroy
+	h1_destroy
+	vrf_cleanup
+	forwarding_restore
+}
+
+ipip_payload_get()
+{
+	local saddr="20:01:0d:b8:00:02:00:00:00:00:00:00:00:00:00:01"
+	local daddr="20:01:0d:b8:00:01:00:00:00:00:00:00:00:00:00:01"
+	local flags=$1; shift
+	local key=$1; shift
+
+	p=$(:
+		)"$flags"$(		      : GRE flags
+	        )"0:00:"$(                    : Reserved + version
+		)"86:dd:"$(		      : ETH protocol type
+		)"$key"$( 		      : Key
+		)"6"$(	                      : IP version
+		)"0:0"$(		      : Traffic class
+		)"0:00:00:"$(		      : Flow label
+		)"00:00:"$(                   : Payload length
+		)"3a:"$(                      : Next header
+		)"04:"$(                      : Hop limit
+		)"$saddr:"$(                  : IP saddr
+		)"$daddr:"$(                  : IP daddr
+		)
+	echo $p
+}
+
+ecn_payload_get()
+{
+	echo $(ipip_payload_get "0")
+}
+
+ecn_decap_test()
+{
+	local trap_name="decap_error"
+	local desc=$1; shift
+	local ecn_desc=$1; shift
+	local outer_tos=$1; shift
+	local mz_pid
+
+	RET=0
+
+	tc filter add dev $swp1 egress protocol ipv6 pref 1 handle 101 \
+		flower src_ip 2001:db8:2::1 dst_ip 2001:db8:1::1 skip_sw \
+		action pass
+
+	rp1_mac=$(mac_get $rp1)
+	rp2_mac=$(mac_get $rp2)
+	payload=$(ecn_payload_get)
+
+	ip vrf exec v$rp2 $MZ -6 $rp2 -c 0 -d 1msec -a $rp2_mac -b $rp1_mac \
+		-A 2001:db8:3::2 -B 2001:db8:3::1 -t ip \
+			tos=$outer_tos,next=47,p=$payload -q &
+	mz_pid=$!
+
+	devlink_trap_exception_test $trap_name
+
+	tc_check_packets "dev $swp1 egress" 101 0
+	check_err $? "Packets were not dropped"
+
+	log_test "$desc: Inner ECN is not ECT and outer is $ecn_desc"
+
+	kill $mz_pid && wait $mz_pid &> /dev/null
+	tc filter del dev $swp1 egress protocol ipv6 pref 1 handle 101 flower
+}
+
+no_matching_tunnel_test()
+{
+	local trap_name="decap_error"
+	local desc=$1; shift
+	local sip=$1; shift
+	local mz_pid
+
+	RET=0
+
+	tc filter add dev $swp1 egress protocol ipv6 pref 1 handle 101 \
+		flower src_ip 2001:db8:2::1 dst_ip 2001:db8:1::1 action pass
+
+	rp1_mac=$(mac_get $rp1)
+	rp2_mac=$(mac_get $rp2)
+	payload=$(ipip_payload_get "$@")
+
+	ip vrf exec v$rp2 $MZ -6 $rp2 -c 0 -d 1msec -a $rp2_mac -b $rp1_mac \
+		-A $sip -B 2001:db8:3::1 -t ip next=47,p=$payload -q &
+	mz_pid=$!
+
+	devlink_trap_exception_test $trap_name
+
+	tc_check_packets "dev $swp1 egress" 101 0
+	check_err $? "Packets were not dropped"
+
+	log_test "$desc"
+
+	kill $mz_pid && wait $mz_pid &> /dev/null
+	tc filter del dev $swp1 egress protocol ipv6 pref 1 handle 101 flower
+}
+
+decap_error_test()
+{
+	# Correct source IP - the remote address
+	local sip=2001:db8:3::2
+
+	ecn_decap_test "Decap error" "ECT(1)" 01
+	ecn_decap_test "Decap error" "ECT(0)" 02
+	ecn_decap_test "Decap error" "CE" 03
+
+	no_matching_tunnel_test "Decap error: Source IP check failed" \
+		2001:db8:4::2 "0"
+	no_matching_tunnel_test \
+		"Decap error: Key exists but was not expected" $sip "2" \
+		"00:00:00:E9:"
+
+	# Destroy the tunnel and create new one with key
+	__addr_add_del g1 del 2001:db8:3::1/128
+	tunnel_destroy g1
+
+	tunnel_create g1 ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \
+		ttl inherit key 233
+	__addr_add_del g1 add 2001:db8:3::1/128
+
+	no_matching_tunnel_test \
+		"Decap error: Key does not exist but was expected" $sip "0"
+	no_matching_tunnel_test \
+		"Decap error: Packet has a wrong key field" $sip "2" \
+		"00:00:00:E8:"
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+tests_run
+
+exit $EXIT_STATUS
-- 
cgit v1.2.3


From c473f723f97a0b3a2d0b3ae75bfcf090882afa85 Mon Sep 17 00:00:00 2001
From: Amit Cohen <amcohen@nvidia.com>
Date: Fri, 8 Oct 2021 16:12:39 +0300
Subject: selftests: mlxsw: devlink_trap_tunnel_ipip: Align topology drawing
 correctly

As part of adding same test for GRE tunnel with IPv6 underlay, wrong
alignments were found, fix them.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
index 8817851da7a9..e2ab26b790a0 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
@@ -13,7 +13,7 @@
 #                     |
 # +-------------------|-----+
 # | SW1               |     |
-# |              $swp1 +    |
+# |             $swp1 +     |
 # |      192.0.2.2/28       |
 # |                         |
 # |  + g1a (gre)            |
@@ -27,8 +27,8 @@
 #    |
 # +--|----------------------+
 # |  |                 VRF2 |
-# | + $rp2                  |
-# |   198.51.100.2/28       |
+# |  + $rp2                 |
+# |    198.51.100.2/28      |
 # +-------------------------+
 
 lib_dir=$(dirname $0)/../../../net/forwarding
-- 
cgit v1.2.3


From 8bb0ebd52238972fd4c60280669103560838ab0d Mon Sep 17 00:00:00 2001
From: Amit Cohen <amcohen@nvidia.com>
Date: Fri, 8 Oct 2021 16:12:40 +0300
Subject: selftests: mlxsw: devlink_trap_tunnel_ipip: Remove code duplication

As part of adding same test for GRE tunnel with IPv6 underlay, an
optional improvement was found - call ipip_payload_get from
ecn_payload_get, so do not duplicate the code which creates the payload.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh  | 38 +++++++---------------
 1 file changed, 11 insertions(+), 27 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
index e2ab26b790a0..c072c1633f1d 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
@@ -116,12 +116,16 @@ cleanup()
 	forwarding_restore
 }
 
-ecn_payload_get()
+ipip_payload_get()
 {
+	local flags=$1; shift
+	local key=$1; shift
+
 	p=$(:
-		)"0"$(		              : GRE flags
+		)"$flags"$(		      : GRE flags
 	        )"0:00:"$(                    : Reserved + version
 		)"08:00:"$(		      : ETH protocol type
+		)"$key"$( 		      : Key
 		)"4"$(	                      : IP version
 		)"5:"$(                       : IHL
 		)"00:"$(                      : IP TOS
@@ -137,6 +141,11 @@ ecn_payload_get()
 	echo $p
 }
 
+ecn_payload_get()
+{
+	echo $(ipip_payload_get "0")
+}
+
 ecn_decap_test()
 {
 	local trap_name="decap_error"
@@ -171,31 +180,6 @@ ecn_decap_test()
 	tc filter del dev $swp1 egress protocol ip pref 1 handle 101 flower
 }
 
-ipip_payload_get()
-{
-	local flags=$1; shift
-	local key=$1; shift
-
-	p=$(:
-		)"$flags"$(		      : GRE flags
-	        )"0:00:"$(                    : Reserved + version
-		)"08:00:"$(		      : ETH protocol type
-		)"$key"$( 		      : Key
-		)"4"$(	                      : IP version
-		)"5:"$(                       : IHL
-		)"00:"$(                      : IP TOS
-		)"00:14:"$(                   : IP total length
-		)"00:00:"$(                   : IP identification
-		)"20:00:"$(                   : IP flags + frag off
-		)"30:"$(                      : IP TTL
-		)"01:"$(                      : IP proto
-		)"E7:E6:"$(    	              : IP header csum
-		)"C0:00:01:01:"$(             : IP saddr : 192.0.1.1
-		)"C0:00:02:01:"$(             : IP daddr : 192.0.2.1
-		)
-	echo $p
-}
-
 no_matching_tunnel_test()
 {
 	local trap_name="decap_error"
-- 
cgit v1.2.3


From 7f63cdde50302bcdf48c35afbb057a8d3d3e0d85 Mon Sep 17 00:00:00 2001
From: Amit Cohen <amcohen@nvidia.com>
Date: Fri, 8 Oct 2021 16:12:41 +0300
Subject: selftests: mlxsw: devlink_trap_tunnel_ipip: Send a full-length key

As part of adding same test for GRE tunnel with IPv6 underlay, missing
bytes for key were found.

mausezahn does not fill zeros between two colons, so send them
explicitly. For example, use "00:00:00:E9:" instead of ":E9:"

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
index c072c1633f1d..e9a82cae8c9a 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_tunnel_ipip.sh
@@ -223,7 +223,8 @@ decap_error_test()
 	no_matching_tunnel_test "Decap error: Source IP check failed" \
 		192.0.2.68 "0"
 	no_matching_tunnel_test \
-		"Decap error: Key exists but was not expected" $sip "2" ":E9:"
+		"Decap error: Key exists but was not expected" $sip "2" \
+		"00:00:00:E9:"
 
 	# Destroy the tunnel and create new one with key
 	__addr_add_del g1 del 192.0.2.65/32
@@ -235,7 +236,8 @@ decap_error_test()
 	no_matching_tunnel_test \
 		"Decap error: Key does not exist but was expected" $sip "0"
 	no_matching_tunnel_test \
-		"Decap error: Packet has a wrong key field" $sip "2" "E8:"
+		"Decap error: Packet has a wrong key field" $sip "2" \
+		"00:00:00:E8:"
 }
 
 trap cleanup EXIT
-- 
cgit v1.2.3


From 7e3cbd3405cb7b6c036b8984baa694bc55c08e46 Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Fri, 8 Oct 2021 10:31:39 -0700
Subject: selftests/bpf: Fix btf_dump test under new clang

New clang version changed ([0]) type name in dwarf from "long int" to "long",
this is causing btf_dump tests to fail.

  [0] https://github.com/llvm/llvm-project/commit/f6a561c4d6754b13165a49990e8365d819f64c86

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211008173139.1457407-1-fallentree@fb.com
---
 .../testing/selftests/bpf/progs/btf_dump_test_case_bitfields.c | 10 +++++-----
 tools/testing/selftests/bpf/progs/btf_dump_test_case_packing.c |  4 ++--
 tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c |  2 +-
 tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c  |  2 +-
 4 files changed, 9 insertions(+), 9 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/btf_dump_test_case_bitfields.c b/tools/testing/selftests/bpf/progs/btf_dump_test_case_bitfields.c
index 8f44767a75fa..e5560a656030 100644
--- a/tools/testing/selftests/bpf/progs/btf_dump_test_case_bitfields.c
+++ b/tools/testing/selftests/bpf/progs/btf_dump_test_case_bitfields.c
@@ -11,7 +11,7 @@
 /*
  *struct bitfields_only_mixed_types {
  *	int a: 3;
- *	long int b: 2;
+ *	long b: 2;
  *	_Bool c: 1;
  *	enum {
  *		A = 0,
@@ -27,7 +27,7 @@
 
 struct bitfields_only_mixed_types {
 	int a: 3;
-	long int b: 2;
+	long b: 2;
 	bool c: 1; /* it's really a _Bool type */
 	enum {
 		A, /* A = 0, dumper is very explicit */
@@ -44,8 +44,8 @@ struct bitfields_only_mixed_types {
  *	char: 4;
  *	int a: 4;
  *	short b;
- *	long int c;
- *	long int d: 8;
+ *	long c;
+ *	long d: 8;
  *	int e;
  *	int f;
  *};
@@ -71,7 +71,7 @@ struct bitfield_mixed_with_others {
  *struct bitfield_flushed {
  *	int a: 4;
  *	long: 60;
- *	long int b: 16;
+ *	long b: 16;
  *};
  *
  */
diff --git a/tools/testing/selftests/bpf/progs/btf_dump_test_case_packing.c b/tools/testing/selftests/bpf/progs/btf_dump_test_case_packing.c
index 1cef3bec1dc7..e304b6204bd9 100644
--- a/tools/testing/selftests/bpf/progs/btf_dump_test_case_packing.c
+++ b/tools/testing/selftests/bpf/progs/btf_dump_test_case_packing.c
@@ -29,7 +29,7 @@ struct non_packed_fields {
 struct nested_packed {
 	char: 4;
 	int a: 4;
-	long int b;
+	long b;
 	struct {
 		char c;
 		int d;
@@ -44,7 +44,7 @@ union union_is_never_packed {
 
 union union_does_not_need_packing {
 	struct {
-		long int a;
+		long a;
 		int b;
 	} __attribute__((packed));
 	int c;
diff --git a/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c b/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c
index 35c512818a56..f2661c8d2d90 100644
--- a/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c
+++ b/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c
@@ -9,7 +9,7 @@
 /* ----- START-EXPECTED-OUTPUT ----- */
 struct padded_implicitly {
 	int a;
-	long int b;
+	long b;
 	char c;
 };
 
diff --git a/tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c b/tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c
index 8aaa24a00322..1c7105fcae3c 100644
--- a/tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c
+++ b/tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c
@@ -189,7 +189,7 @@ struct struct_with_embedded_stuff {
 			const char *d;
 		} e;
 		union {
-			volatile long int f;
+			volatile long f;
 			void * restrict g;
 		};
 	};
-- 
cgit v1.2.3


From f012ade10b34c461663bc3dd957636be06804b0d Mon Sep 17 00:00:00 2001
From: Quentin Monnet <quentin@isovalent.com>
Date: Thu, 7 Oct 2021 20:44:29 +0100
Subject: bpftool: Install libbpf headers instead of including the dir

Bpftool relies on libbpf, therefore it relies on a number of headers
from the library and must be linked against the library. The Makefile
for bpftool exposes these objects by adding tools/lib as an include
directory ("-I$(srctree)/tools/lib"). This is a working solution, but
this is not the cleanest one. The risk is to involuntarily include
objects that are not intended to be exposed by the libbpf.

The headers needed to compile bpftool should in fact be "installed" from
libbpf, with its "install_headers" Makefile target. In addition, there
is one header which is internal to the library and not supposed to be
used by external applications, but that bpftool uses anyway.

Adjust the Makefile in order to install the header files properly before
compiling bpftool. Also copy the additional internal header file
(nlattr.h), but call it out explicitly. Build (and install headers) in a
subdirectory under bpftool/ instead of tools/lib/bpf/. When descending
from a parent Makefile, this is configurable by setting the OUTPUT,
LIBBPF_OUTPUT and LIBBPF_DESTDIR variables.

Also adjust the Makefile for BPF selftests, so as to reuse the (host)
libbpf compiled earlier and to avoid compiling a separate version of the
library just for bpftool.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-4-quentin@isovalent.com
---
 tools/bpf/bpftool/Makefile           | 33 +++++++++++++++++++++------------
 tools/testing/selftests/bpf/Makefile |  2 ++
 2 files changed, 23 insertions(+), 12 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index 1fcf5b01a193..ba02d71c39ef 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -17,19 +17,23 @@ endif
 BPF_DIR = $(srctree)/tools/lib/bpf/
 
 ifneq ($(OUTPUT),)
-  LIBBPF_OUTPUT = $(OUTPUT)/libbpf/
-  LIBBPF_PATH = $(LIBBPF_OUTPUT)
-  BOOTSTRAP_OUTPUT = $(OUTPUT)/bootstrap/
+  _OUTPUT := $(OUTPUT)
 else
-  LIBBPF_OUTPUT =
-  LIBBPF_PATH = $(BPF_DIR)
-  BOOTSTRAP_OUTPUT = $(CURDIR)/bootstrap/
+  _OUTPUT := $(CURDIR)
 endif
+BOOTSTRAP_OUTPUT := $(_OUTPUT)/bootstrap/
+LIBBPF_OUTPUT := $(_OUTPUT)/libbpf/
+LIBBPF_DESTDIR := $(LIBBPF_OUTPUT)
+LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)/include
 
-LIBBPF = $(LIBBPF_PATH)libbpf.a
+LIBBPF = $(LIBBPF_OUTPUT)libbpf.a
 LIBBPF_BOOTSTRAP_OUTPUT = $(BOOTSTRAP_OUTPUT)libbpf/
 LIBBPF_BOOTSTRAP = $(LIBBPF_BOOTSTRAP_OUTPUT)libbpf.a
 
+# We need to copy nlattr.h which is not otherwise exported by libbpf, but still
+# required by bpftool.
+LIBBPF_INTERNAL_HDRS := nlattr.h
+
 ifeq ($(BPFTOOL_VERSION),)
 BPFTOOL_VERSION := $(shell make -rR --no-print-directory -sC ../../.. kernelversion)
 endif
@@ -38,7 +42,13 @@ $(LIBBPF_OUTPUT) $(BOOTSTRAP_OUTPUT) $(LIBBPF_BOOTSTRAP_OUTPUT):
 	$(QUIET_MKDIR)mkdir -p $@
 
 $(LIBBPF): FORCE | $(LIBBPF_OUTPUT)
-	$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) $(LIBBPF_OUTPUT)libbpf.a
+	$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_OUTPUT) \
+		DESTDIR=$(LIBBPF_DESTDIR) prefix= $(LIBBPF) install_headers
+
+$(LIBBPF_INCLUDE)/bpf/$(LIBBPF_INTERNAL_HDRS): \
+		$(addprefix $(BPF_DIR),$(LIBBPF_INTERNAL_HDRS)) $(LIBBPF)
+	$(call QUIET_INSTALL, bpf/$(notdir $@))
+	$(Q)install -m 644 -t $(LIBBPF_INCLUDE)/bpf/ $(BPF_DIR)$(notdir $@)
 
 $(LIBBPF_BOOTSTRAP): FORCE | $(LIBBPF_BOOTSTRAP_OUTPUT)
 	$(Q)$(MAKE) -C $(BPF_DIR) OUTPUT=$(LIBBPF_BOOTSTRAP_OUTPUT) \
@@ -60,10 +70,10 @@ CFLAGS += -W -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers
 CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
 CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
 	-I$(if $(OUTPUT),$(OUTPUT),.) \
+	-I$(LIBBPF_INCLUDE) \
 	-I$(srctree)/kernel/bpf/ \
 	-I$(srctree)/tools/include \
 	-I$(srctree)/tools/include/uapi \
-	-I$(srctree)/tools/lib \
 	-I$(srctree)/tools/perf
 CFLAGS += -DBPFTOOL_VERSION='"$(BPFTOOL_VERSION)"'
 ifneq ($(EXTRA_CFLAGS),)
@@ -140,7 +150,7 @@ BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o g
 $(BOOTSTRAP_OBJS): $(LIBBPF_BOOTSTRAP)
 
 OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o
-$(OBJS): $(LIBBPF)
+$(OBJS): $(LIBBPF) $(LIBBPF_INCLUDE)/bpf/$(LIBBPF_INTERNAL_HDRS)
 
 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)				\
 		     $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)	\
@@ -167,8 +177,7 @@ $(OUTPUT)%.bpf.o: skeleton/%.bpf.c $(OUTPUT)vmlinux.h $(LIBBPF)
 	$(QUIET_CLANG)$(CLANG) \
 		-I$(if $(OUTPUT),$(OUTPUT),.) \
 		-I$(srctree)/tools/include/uapi/ \
-		-I$(LIBBPF_PATH) \
-		-I$(srctree)/tools/lib \
+		-I$(LIBBPF_INCLUDE) \
 		-g -O2 -Wall -target bpf -c $< -o $@ && $(LLVM_STRIP) -g $@
 
 $(OUTPUT)%.skel.h: $(OUTPUT)%.bpf.o $(BPFTOOL_BOOTSTRAP)
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index c5c9a9f50d8d..849a4637f59d 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -209,6 +209,8 @@ $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \
 		    CC=$(HOSTCC) LD=$(HOSTLD)				       \
 		    EXTRA_CFLAGS='-g -O0'				       \
 		    OUTPUT=$(HOST_BUILD_DIR)/bpftool/			       \
+		    LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/		       \
+		    LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/			       \
 		    prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install
 
 all: docs
-- 
cgit v1.2.3


From 1478994aad82810d833bf9c816fb4e9845553e9b Mon Sep 17 00:00:00 2001
From: Quentin Monnet <quentin@isovalent.com>
Date: Thu, 7 Oct 2021 20:44:30 +0100
Subject: tools/resolve_btfids: Install libbpf headers when building

API headers from libbpf should not be accessed directly from the
library's source directory. Instead, they should be exported with "make
install_headers". Let's make sure that resolve_btfids installs the
headers properly when building.

When descending from a parent Makefile, the specific output directories
for building the library and exporting the headers are configurable with
LIBBPF_OUT and LIBBPF_DESTDIR, respectively. This is in addition to
OUTPUT, on top of which those variables are constructed by default.

Also adjust the Makefile for the BPF selftests in order to point to the
(target) libbpf shared with other tools, instead of building a version
specific to resolve_btfids. Remove libbpf's order-only dependencies on
the include directories (they are created by libbpf and don't need to
exist beforehand).

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-5-quentin@isovalent.com
---
 tools/bpf/resolve_btfids/Makefile    | 16 +++++++++++-----
 tools/bpf/resolve_btfids/main.c      |  4 ++--
 tools/testing/selftests/bpf/Makefile |  7 +++++--
 3 files changed, 18 insertions(+), 9 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
index 08b75e314ae7..751643f860b2 100644
--- a/tools/bpf/resolve_btfids/Makefile
+++ b/tools/bpf/resolve_btfids/Makefile
@@ -29,25 +29,30 @@ BPFOBJ     := $(OUTPUT)/libbpf/libbpf.a
 LIBBPF_OUT := $(abspath $(dir $(BPFOBJ)))/
 SUBCMDOBJ  := $(OUTPUT)/libsubcmd/libsubcmd.a
 
+LIBBPF_DESTDIR := $(LIBBPF_OUT)
+LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include
+
 BINARY     := $(OUTPUT)/resolve_btfids
 BINARY_IN  := $(BINARY)-in.o
 
 all: $(BINARY)
 
-$(OUTPUT) $(OUTPUT)/libbpf $(OUTPUT)/libsubcmd:
+$(OUTPUT) $(OUTPUT)/libsubcmd $(LIBBPF_OUT):
 	$(call msg,MKDIR,,$@)
 	$(Q)mkdir -p $(@)
 
 $(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
 	$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
 
-$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)/libbpf
-	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC)  OUTPUT=$(LIBBPF_OUT) $(abspath $@)
+$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUT)
+	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(LIBBPF_OUT)    \
+		    DESTDIR=$(LIBBPF_DESTDIR) prefix=			       \
+		    $(abspath $@) install_headers
 
 CFLAGS := -g \
           -I$(srctree)/tools/include \
           -I$(srctree)/tools/include/uapi \
-          -I$(LIBBPF_SRC) \
+          -I$(LIBBPF_INCLUDE) \
           -I$(SUBCMD_SRC)
 
 LIBS = -lelf -lz
@@ -65,7 +70,8 @@ $(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
 clean_objects := $(wildcard $(OUTPUT)/*.o                \
                             $(OUTPUT)/.*.o.cmd           \
                             $(OUTPUT)/.*.o.d             \
-                            $(OUTPUT)/libbpf             \
+                            $(LIBBPF_OUT)                \
+                            $(LIBBPF_DESTDIR)            \
                             $(OUTPUT)/libsubcmd          \
                             $(OUTPUT)/resolve_btfids)
 
diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c
index c6c3e613858a..716e6ad1864b 100644
--- a/tools/bpf/resolve_btfids/main.c
+++ b/tools/bpf/resolve_btfids/main.c
@@ -60,8 +60,8 @@
 #include <linux/rbtree.h>
 #include <linux/zalloc.h>
 #include <linux/err.h>
-#include <btf.h>
-#include <libbpf.h>
+#include <bpf/btf.h>
+#include <bpf/libbpf.h>
 #include <parse-options.h>
 
 #define BTF_IDS_SECTION	".BTF_ids"
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 849a4637f59d..090f424ac5e1 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -122,9 +122,11 @@ BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
 ifneq ($(CROSS_COMPILE),)
 HOST_BUILD_DIR		:= $(BUILD_DIR)/host
 HOST_SCRATCH_DIR	:= $(OUTPUT)/host-tools
+HOST_INCLUDE_DIR	:= $(HOST_SCRATCH_DIR)/include
 else
 HOST_BUILD_DIR		:= $(BUILD_DIR)
 HOST_SCRATCH_DIR	:= $(SCRATCH_DIR)
+HOST_INCLUDE_DIR	:= $(INCLUDE_DIR)
 endif
 HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
 RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
@@ -227,7 +229,7 @@ docs-clean:
 
 $(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \
 	   ../../../include/uapi/linux/bpf.h                                   \
-	   | $(INCLUDE_DIR) $(BUILD_DIR)/libbpf
+	   | $(BUILD_DIR)/libbpf
 	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
 		    EXTRA_CFLAGS='-g -O0'				       \
 		    DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
@@ -235,7 +237,7 @@ $(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \
 ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
 $(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)                \
 	   ../../../include/uapi/linux/bpf.h                                   \
-	   | $(INCLUDE_DIR) $(HOST_BUILD_DIR)/libbpf
+	   | $(HOST_BUILD_DIR)/libbpf
 	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR)                             \
 		    EXTRA_CFLAGS='-g -O0'				       \
 		    OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
@@ -260,6 +262,7 @@ $(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids	\
 		       $(TOOLSDIR)/lib/str_error_r.c
 	$(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids	\
 		CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
+		LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
 		OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
 
 # Get Clang's default includes on this system, as opposed to those seen by
-- 
cgit v1.2.3


From be79505caf3f99a2f9cca5946261085b333f7034 Mon Sep 17 00:00:00 2001
From: Quentin Monnet <quentin@isovalent.com>
Date: Thu, 7 Oct 2021 20:44:31 +0100
Subject: tools/runqslower: Install libbpf headers when building

API headers from libbpf should not be accessed directly from the
library's source directory. Instead, they should be exported with "make
install_headers". Let's make sure that runqslower installs the
headers properly when building.

We use a libbpf_hdrs target to mark the logical dependency on libbpf's
headers export for a number of object files, even though the headers
should have been exported at this time (since bpftool needs them, and is
required to generate the skeleton or the vmlinux.h).

When descending from a parent Makefile, the specific output directories
for building the library and exporting the headers are configurable with
BPFOBJ_OUTPUT and BPF_DESTDIR, respectively. This is in addition to
OUTPUT, on top of which those variables are constructed by default.

Also adjust the Makefile for the BPF selftests. We pass a number of
variables to the "make" invocation, because we want to point runqslower
to the (target) libbpf shared with other tools, instead of building its
own version. In addition, runqslower relies on (target) bpftool, and we
also want to pass the proper variables to its Makefile so that bpftool
itself reuses the same libbpf.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-6-quentin@isovalent.com
---
 tools/bpf/runqslower/Makefile        | 22 +++++++++++++---------
 tools/testing/selftests/bpf/Makefile | 15 +++++++++------
 2 files changed, 22 insertions(+), 15 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile
index 3818ec511fd2..bbd1150578f7 100644
--- a/tools/bpf/runqslower/Makefile
+++ b/tools/bpf/runqslower/Makefile
@@ -9,9 +9,9 @@ BPFTOOL ?= $(DEFAULT_BPFTOOL)
 LIBBPF_SRC := $(abspath ../../lib/bpf)
 BPFOBJ_OUTPUT := $(OUTPUT)libbpf/
 BPFOBJ := $(BPFOBJ_OUTPUT)libbpf.a
-BPF_INCLUDE := $(BPFOBJ_OUTPUT)
-INCLUDES := -I$(OUTPUT) -I$(BPF_INCLUDE) -I$(abspath ../../lib)        \
-       -I$(abspath ../../include/uapi)
+BPF_DESTDIR := $(BPFOBJ_OUTPUT)
+BPF_INCLUDE := $(BPF_DESTDIR)/include
+INCLUDES := -I$(OUTPUT) -I$(BPF_INCLUDE) -I$(abspath ../../include/uapi)
 CFLAGS := -g -Wall
 
 # Try to detect best kernel BTF source
@@ -33,7 +33,7 @@ endif
 
 .DELETE_ON_ERROR:
 
-.PHONY: all clean runqslower
+.PHONY: all clean runqslower libbpf_hdrs
 all: runqslower
 
 runqslower: $(OUTPUT)/runqslower
@@ -46,13 +46,15 @@ clean:
 	$(Q)$(RM) $(OUTPUT)runqslower
 	$(Q)$(RM) -r .output
 
+libbpf_hdrs: $(BPFOBJ)
+
 $(OUTPUT)/runqslower: $(OUTPUT)/runqslower.o $(BPFOBJ)
 	$(QUIET_LINK)$(CC) $(CFLAGS) $^ -lelf -lz -o $@
 
 $(OUTPUT)/runqslower.o: runqslower.h $(OUTPUT)/runqslower.skel.h	      \
-			$(OUTPUT)/runqslower.bpf.o
+			$(OUTPUT)/runqslower.bpf.o | libbpf_hdrs
 
-$(OUTPUT)/runqslower.bpf.o: $(OUTPUT)/vmlinux.h runqslower.h
+$(OUTPUT)/runqslower.bpf.o: $(OUTPUT)/vmlinux.h runqslower.h | libbpf_hdrs
 
 $(OUTPUT)/%.skel.h: $(OUTPUT)/%.bpf.o | $(BPFTOOL)
 	$(QUIET_GEN)$(BPFTOOL) gen skeleton $< > $@
@@ -81,8 +83,10 @@ else
 endif
 
 $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(BPFOBJ_OUTPUT)
-	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(BPFOBJ_OUTPUT) $@
+	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(BPFOBJ_OUTPUT) \
+		    DESTDIR=$(BPFOBJ_OUTPUT) prefix= $(abspath $@) install_headers
 
-$(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT)
+$(DEFAULT_BPFTOOL): $(BPFOBJ) | $(BPFTOOL_OUTPUT)
 	$(Q)$(MAKE) $(submake_extras) -C ../bpftool OUTPUT=$(BPFTOOL_OUTPUT)   \
-		    CC=$(HOSTCC) LD=$(HOSTLD)
+		    LIBBPF_OUTPUT=$(BPFOBJ_OUTPUT)			       \
+		    LIBBPF_DESTDIR=$(BPF_DESTDIR) CC=$(HOSTCC) LD=$(HOSTLD)
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 090f424ac5e1..e023d734f7b0 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -130,6 +130,7 @@ HOST_INCLUDE_DIR	:= $(INCLUDE_DIR)
 endif
 HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
 RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
+RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
 
 VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)				\
 		     $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)	\
@@ -154,7 +155,7 @@ $(notdir $(TEST_GEN_PROGS)						\
 # sort removes libbpf duplicates when not cross-building
 MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf	       \
 	       $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids      \
-	       $(INCLUDE_DIR))
+	       $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
 $(MAKE_DIRS):
 	$(call msg,MKDIR,,$@)
 	$(Q)mkdir -p $@
@@ -183,11 +184,13 @@ $(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ)
 
 DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
 
-$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL)
-	$(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower	\
-		    OUTPUT=$(SCRATCH_DIR)/ VMLINUX_BTF=$(VMLINUX_BTF)   \
-		    BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) &&	\
-		    cp $(SCRATCH_DIR)/runqslower $@
+$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
+	$(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower	       \
+		    OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF)     \
+		    BPFTOOL_OUTPUT=$(BUILD_DIR)/bpftool/		       \
+		    BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf			       \
+		    BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) &&	       \
+		    cp $(RUNQSLOWER_OUTPUT)runqslower $@
 
 TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
 
-- 
cgit v1.2.3


From 87ee33bfdd4f74edc1548c7f0140800cfcc33039 Mon Sep 17 00:00:00 2001
From: Quentin Monnet <quentin@isovalent.com>
Date: Thu, 7 Oct 2021 20:44:37 +0100
Subject: selftests/bpf: Better clean up for runqslower in
 test_bpftool_build.sh

The script test_bpftool_build.sh attempts to build bpftool in the
various supported ways, to make sure nothing breaks.

One of those ways is to run "make tools/bpf" from the root of the kernel
repository. This command builds bpftool, along with the other tools
under tools/bpf, and runqslower in particular. After running the
command and upon a successful bpftool build, the script attempts to
cleanup the generated objects. However, after building with this target
and in the case of runqslower, the files are not cleaned up as expected.

This is because the "tools/bpf" target sets $(OUTPUT) to
.../tools/bpf/runqslower/ when building the tool, causing the object
files to be placed directly under the runqslower directory. But when
running "cd tools/bpf; make clean", the value for $(OUTPUT) is set to
".output" (relative to the runqslower directory) by runqslower's
Makefile, and this is where the Makefile looks for files to clean up.

We cannot easily fix in the root Makefile (where "tools/bpf" is defined)
or in tools/scripts/Makefile.include (setting $(OUTPUT)), where changing
the way the output variables are passed would likely have consequences
elsewhere. We could change runqslower's Makefile to build in the
repository instead of in a dedicated ".output/", but doing so just to
accommodate a test script doesn't sound great. Instead, let's just make
sure that we clean up runqslower properly by adding the correct command
to the script.

This will attempt to clean runqslower twice: the first try with command
"cd tools/bpf; make clean" will search for tools/bpf/runqslower/.output
and fail to clean it (but will still clean the other tools, in
particular bpftool), the second one (added in this commit) sets the
$(OUTPUT) variable like for building with the "tool/bpf" target and
should succeed.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-12-quentin@isovalent.com
---
 tools/testing/selftests/bpf/test_bpftool_build.sh | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_bpftool_build.sh b/tools/testing/selftests/bpf/test_bpftool_build.sh
index b03a87571592..1453a53ed547 100755
--- a/tools/testing/selftests/bpf/test_bpftool_build.sh
+++ b/tools/testing/selftests/bpf/test_bpftool_build.sh
@@ -90,6 +90,10 @@ echo -e "... through kbuild\n"
 
 if [ -f ".config" ] ; then
 	make_and_clean tools/bpf
+	## "make tools/bpf" sets $(OUTPUT) to ...tools/bpf/runqslower for
+	## runqslower, but the default (used for the "clean" target) is .output.
+	## Let's make sure we clean runqslower's directory properly.
+	make -C tools/bpf/runqslower OUTPUT=${KDIR_ROOT_DIR}/tools/bpf/runqslower/ clean
 
 	## $OUTPUT is overwritten in kbuild Makefile, and thus cannot be passed
 	## down from toplevel Makefile to bpftool's Makefile.
-- 
cgit v1.2.3


From d7db0a4e8d95101ebb545444578ba7085c270e5f Mon Sep 17 00:00:00 2001
From: Quentin Monnet <quentin@isovalent.com>
Date: Thu, 7 Oct 2021 20:44:38 +0100
Subject: bpftool: Add install-bin target to install binary only

With "make install", bpftool installs its binary and its bash completion
file. Usually, this is what we want. But a few components in the kernel
repository (namely, BPF iterators and selftests) also install bpftool
locally before using it. In such a case, bash completion is not
necessary and is just a useless build artifact.

Let's add an "install-bin" target to bpftool, to offer a way to install
the binary only.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211007194438.34443-13-quentin@isovalent.com
---
 kernel/bpf/preload/iterators/Makefile | 2 +-
 tools/bpf/bpftool/Makefile            | 6 ++++--
 tools/testing/selftests/bpf/Makefile  | 2 +-
 3 files changed, 6 insertions(+), 4 deletions(-)

(limited to 'tools/testing')

diff --git a/kernel/bpf/preload/iterators/Makefile b/kernel/bpf/preload/iterators/Makefile
index a4aedc7b0728..b8bd60511227 100644
--- a/kernel/bpf/preload/iterators/Makefile
+++ b/kernel/bpf/preload/iterators/Makefile
@@ -66,4 +66,4 @@ $(DEFAULT_BPFTOOL): $(BPFOBJ) | $(BPFTOOL_OUTPUT)
 		    OUTPUT=$(BPFTOOL_OUTPUT)/				       \
 		    LIBBPF_OUTPUT=$(LIBBPF_OUTPUT)/			       \
 		    LIBBPF_DESTDIR=$(LIBBPF_DESTDIR)/			       \
-		    prefix= DESTDIR=$(abs_out)/ install
+		    prefix= DESTDIR=$(abs_out)/ install-bin
diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index ba02d71c39ef..9c2d13c513f0 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -226,10 +226,12 @@ clean: $(LIBBPF)-clean $(LIBBPF_BOOTSTRAP)-clean feature-detect-clean
 	$(Q)$(RM) -- $(OUTPUT)FEATURE-DUMP.bpftool
 	$(Q)$(RM) -r -- $(OUTPUT)feature/
 
-install: $(OUTPUT)bpftool
+install-bin: $(OUTPUT)bpftool
 	$(call QUIET_INSTALL, bpftool)
 	$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(prefix)/sbin
 	$(Q)$(INSTALL) $(OUTPUT)bpftool $(DESTDIR)$(prefix)/sbin/bpftool
+
+install: install-bin
 	$(Q)$(INSTALL) -m 0755 -d $(DESTDIR)$(bash_compdir)
 	$(Q)$(INSTALL) -m 0644 bash-completion/bpftool $(DESTDIR)$(bash_compdir)
 
@@ -256,6 +258,6 @@ zdep:
 	@if [ "$(feature-zlib)" != "1" ]; then echo "No zlib found"; exit 1 ; fi
 
 .SECONDARY:
-.PHONY: all FORCE clean install uninstall zdep
+.PHONY: all FORCE clean install-bin install uninstall zdep
 .PHONY: doc doc-clean doc-install doc-uninstall
 .DEFAULT_GOAL := all
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index e023d734f7b0..498222543c37 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -216,7 +216,7 @@ $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \
 		    OUTPUT=$(HOST_BUILD_DIR)/bpftool/			       \
 		    LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/		       \
 		    LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/			       \
-		    prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install
+		    prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
 
 all: docs
 
-- 
cgit v1.2.3


From fa7f17d066bd0996b930b664aa0ed1f213fc1828 Mon Sep 17 00:00:00 2001
From: Hou Tao <houtao1@huawei.com>
Date: Mon, 4 Oct 2021 17:48:57 +0800
Subject: bpf/selftests: Add test for writable bare tracepoint

Add a writable bare tracepoint in bpf_testmod module, and
trigger its calling when reading /sys/kernel/bpf_testmod
with a specific buffer length. The reading will return
the value in writable context if the early return flag
is enabled in writable context.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211004094857.30868-4-hotforest@gmail.com
---
 .../selftests/bpf/bpf_testmod/bpf_testmod-events.h | 15 ++++++++++
 .../selftests/bpf/bpf_testmod/bpf_testmod.c        | 10 +++++++
 .../selftests/bpf/bpf_testmod/bpf_testmod.h        |  5 ++++
 .../selftests/bpf/prog_tests/module_attach.c       | 35 ++++++++++++++++++++++
 .../selftests/bpf/progs/test_module_attach.c       | 14 +++++++++
 tools/testing/selftests/bpf/test_progs.c           |  4 +--
 tools/testing/selftests/bpf/test_progs.h           |  2 ++
 7 files changed, 83 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h
index 89c6d58e5dd6..11ee801e75e7 100644
--- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h
+++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h
@@ -34,6 +34,21 @@ DECLARE_TRACE(bpf_testmod_test_write_bare,
 	TP_ARGS(task, ctx)
 );
 
+#undef BPF_TESTMOD_DECLARE_TRACE
+#ifdef DECLARE_TRACE_WRITABLE
+#define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \
+	DECLARE_TRACE_WRITABLE(call, PARAMS(proto), PARAMS(args), size)
+#else
+#define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \
+	DECLARE_TRACE(call, PARAMS(proto), PARAMS(args))
+#endif
+
+BPF_TESTMOD_DECLARE_TRACE(bpf_testmod_test_writable_bare,
+	TP_PROTO(struct bpf_testmod_test_writable_ctx *ctx),
+	TP_ARGS(ctx),
+	sizeof(struct bpf_testmod_test_writable_ctx)
+);
+
 #endif /* _BPF_TESTMOD_EVENTS_H */
 
 #undef TRACE_INCLUDE_PATH
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
index b892948dc134..5d52ea2768df 100644
--- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
+++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c
@@ -50,6 +50,16 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj,
 	if (bpf_testmod_loop_test(101) > 100)
 		trace_bpf_testmod_test_read(current, &ctx);
 
+	/* Magic number to enable writable tp */
+	if (len == 64) {
+		struct bpf_testmod_test_writable_ctx writable = {
+			.val = 1024,
+		};
+		trace_bpf_testmod_test_writable_bare(&writable);
+		if (writable.early_ret)
+			return snprintf(buf, len, "%d\n", writable.val);
+	}
+
 	return -EIO; /* always fail */
 }
 EXPORT_SYMBOL(bpf_testmod_test_read);
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h
index b3892dc40111..0d71e2607832 100644
--- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h
+++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.h
@@ -17,4 +17,9 @@ struct bpf_testmod_test_write_ctx {
 	size_t len;
 };
 
+struct bpf_testmod_test_writable_ctx {
+	bool early_ret;
+	int val;
+};
+
 #endif /* _BPF_TESTMOD_H */
diff --git a/tools/testing/selftests/bpf/prog_tests/module_attach.c b/tools/testing/selftests/bpf/prog_tests/module_attach.c
index 1797a6e4d6d8..6d0e50dcf47c 100644
--- a/tools/testing/selftests/bpf/prog_tests/module_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/module_attach.c
@@ -2,10 +2,36 @@
 /* Copyright (c) 2020 Facebook */
 
 #include <test_progs.h>
+#include <stdbool.h>
 #include "test_module_attach.skel.h"
 
 static int duration;
 
+static int trigger_module_test_writable(int *val)
+{
+	int fd, err;
+	char buf[65];
+	ssize_t rd;
+
+	fd = open(BPF_TESTMOD_TEST_FILE, O_RDONLY);
+	err = -errno;
+	if (!ASSERT_GE(fd, 0, "testmode_file_open"))
+		return err;
+
+	rd = read(fd, buf, sizeof(buf) - 1);
+	err = -errno;
+	if (!ASSERT_GT(rd, 0, "testmod_file_rd_val")) {
+		close(fd);
+		return err;
+	}
+
+	buf[rd] = '\0';
+	*val = strtol(buf, NULL, 0);
+	close(fd);
+
+	return 0;
+}
+
 static int delete_module(const char *name, int flags)
 {
 	return syscall(__NR_delete_module, name, flags);
@@ -19,6 +45,7 @@ void test_module_attach(void)
 	struct test_module_attach__bss *bss;
 	struct bpf_link *link;
 	int err;
+	int writable_val = 0;
 
 	skel = test_module_attach__open();
 	if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
@@ -51,6 +78,14 @@ void test_module_attach(void)
 	ASSERT_EQ(bss->fexit_ret, -EIO, "fexit_tet");
 	ASSERT_EQ(bss->fmod_ret_read_sz, READ_SZ, "fmod_ret");
 
+	bss->raw_tp_writable_bare_early_ret = true;
+	bss->raw_tp_writable_bare_out_val = 0xf1f2f3f4;
+	ASSERT_OK(trigger_module_test_writable(&writable_val),
+		  "trigger_writable");
+	ASSERT_EQ(bss->raw_tp_writable_bare_in_val, 1024, "writable_test_in");
+	ASSERT_EQ(bss->raw_tp_writable_bare_out_val, writable_val,
+		  "writable_test_out");
+
 	test_module_attach__detach(skel);
 
 	/* attach fentry/fexit and make sure it get's module reference */
diff --git a/tools/testing/selftests/bpf/progs/test_module_attach.c b/tools/testing/selftests/bpf/progs/test_module_attach.c
index bd37ceec5587..b36857093f71 100644
--- a/tools/testing/selftests/bpf/progs/test_module_attach.c
+++ b/tools/testing/selftests/bpf/progs/test_module_attach.c
@@ -27,6 +27,20 @@ int BPF_PROG(handle_raw_tp_bare,
 	return 0;
 }
 
+int raw_tp_writable_bare_in_val = 0;
+int raw_tp_writable_bare_early_ret = 0;
+int raw_tp_writable_bare_out_val = 0;
+
+SEC("raw_tp.w/bpf_testmod_test_writable_bare")
+int BPF_PROG(handle_raw_tp_writable_bare,
+	     struct bpf_testmod_test_writable_ctx *writable)
+{
+	raw_tp_writable_bare_in_val = writable->val;
+	writable->early_ret = raw_tp_writable_bare_early_ret;
+	writable->val = raw_tp_writable_bare_out_val;
+	return 0;
+}
+
 __u32 tp_btf_read_sz = 0;
 
 SEC("tp_btf/bpf_testmod_test_read")
diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index 2ed01f615d20..007b4ff85fea 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -747,7 +747,7 @@ int trigger_module_test_read(int read_sz)
 {
 	int fd, err;
 
-	fd = open("/sys/kernel/bpf_testmod", O_RDONLY);
+	fd = open(BPF_TESTMOD_TEST_FILE, O_RDONLY);
 	err = -errno;
 	if (!ASSERT_GE(fd, 0, "testmod_file_open"))
 		return err;
@@ -769,7 +769,7 @@ int trigger_module_test_write(int write_sz)
 	memset(buf, 'a', write_sz);
 	buf[write_sz-1] = '\0';
 
-	fd = open("/sys/kernel/bpf_testmod", O_WRONLY);
+	fd = open(BPF_TESTMOD_TEST_FILE, O_WRONLY);
 	err = -errno;
 	if (!ASSERT_GE(fd, 0, "testmod_file_open")) {
 		free(buf);
diff --git a/tools/testing/selftests/bpf/test_progs.h b/tools/testing/selftests/bpf/test_progs.h
index 94bef0aa74cf..9b8a1810b700 100644
--- a/tools/testing/selftests/bpf/test_progs.h
+++ b/tools/testing/selftests/bpf/test_progs.h
@@ -301,3 +301,5 @@ int trigger_module_test_write(int write_sz);
 #else
 #define SYS_NANOSLEEP_KPROBE_NAME "sys_nanosleep"
 #endif
+
+#define BPF_TESTMOD_TEST_FILE "/sys/kernel/bpf_testmod"
-- 
cgit v1.2.3


From 91b2c0afd00cb01d715d6e9503624ab33580d5b6 Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Wed, 6 Oct 2021 11:56:06 -0700
Subject: selftests/bpf: Add parallelism to test_progs

This patch adds "-j" mode to test_progs, executing tests in multiple
process.  "-j" mode is optional, and works with all existing test
selection mechanism, as well as "-v", "-l" etc.

In "-j" mode, main process use UDS/SEQPACKET to communicate to each forked
worker, commanding it to run tests and collect logs. After all tests are
finished, a summary is printed. main process use multiple competing
threads to dispatch work to worker, trying to keep them all busy.

The test status will be printed as soon as it is finished, if there are
error logs, it will be printed after the final summary line.

By specifying "--debug", additional debug information on server/worker
communication will be printed.

Example output:
  > ./test_progs -n 15-20 -j
  [   12.801730] bpf_testmod: loading out-of-tree module taints kernel.
  Launching 8 workers.
  #20 btf_split:OK
  #16 btf_endian:OK
  #18 btf_module:OK
  #17 btf_map_in_map:OK
  #19 btf_skc_cls_ingress:OK
  #15 btf_dump:OK
  Summary: 6/20 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-2-fallentree@fb.com
---
 tools/testing/selftests/bpf/test_progs.c | 611 +++++++++++++++++++++++++++++--
 tools/testing/selftests/bpf/test_progs.h |  36 +-
 2 files changed, 610 insertions(+), 37 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index 007b4ff85fea..20dd1e2f8d06 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -12,6 +12,11 @@
 #include <string.h>
 #include <execinfo.h> /* backtrace */
 #include <linux/membarrier.h>
+#include <sys/sysinfo.h> /* get_nprocs */
+#include <netinet/in.h>
+#include <sys/select.h>
+#include <sys/socket.h>
+#include <sys/un.h>
 
 /* Adapted from perf/util/string.c */
 static bool glob_match(const char *str, const char *pat)
@@ -48,6 +53,8 @@ struct prog_test_def {
 	bool force_log;
 	int error_cnt;
 	int skip_cnt;
+	int sub_succ_cnt;
+	bool should_run;
 	bool tested;
 	bool need_cgroup_cleanup;
 
@@ -97,6 +104,10 @@ static void dump_test_log(const struct prog_test_def *test, bool failed)
 	if (stdout == env.stdout)
 		return;
 
+	/* worker always holds log */
+	if (env.worker_id != -1)
+		return;
+
 	fflush(stdout); /* exports env.log_buf & env.log_cnt */
 
 	if (env.verbosity > VERBOSE_NONE || test->force_log || failed) {
@@ -107,8 +118,6 @@ static void dump_test_log(const struct prog_test_def *test, bool failed)
 				fprintf(env.stdout, "\n");
 		}
 	}
-
-	fseeko(stdout, 0, SEEK_SET); /* rewind */
 }
 
 static void skip_account(void)
@@ -124,7 +133,8 @@ static void stdio_restore(void);
 /* A bunch of tests set custom affinity per-thread and/or per-process. Reset
  * it after each test/sub-test.
  */
-static void reset_affinity() {
+static void reset_affinity(void)
+{
 
 	cpu_set_t cpuset;
 	int i, err;
@@ -165,21 +175,21 @@ static void restore_netns(void)
 	}
 }
 
-void test__end_subtest()
+void test__end_subtest(void)
 {
 	struct prog_test_def *test = env.test;
 	int sub_error_cnt = test->error_cnt - test->old_error_cnt;
 
 	dump_test_log(test, sub_error_cnt);
 
-	fprintf(env.stdout, "#%d/%d %s/%s:%s\n",
+	fprintf(stdout, "#%d/%d %s/%s:%s\n",
 	       test->test_num, test->subtest_num, test->test_name, test->subtest_name,
 	       sub_error_cnt ? "FAIL" : (test->skip_cnt ? "SKIP" : "OK"));
 
 	if (sub_error_cnt)
-		env.fail_cnt++;
+		test->error_cnt++;
 	else if (test->skip_cnt == 0)
-		env.sub_succ_cnt++;
+		test->sub_succ_cnt++;
 	skip_account();
 
 	free(test->subtest_name);
@@ -217,7 +227,8 @@ bool test__start_subtest(const char *name)
 	return true;
 }
 
-void test__force_log() {
+void test__force_log(void)
+{
 	env.test->force_log = true;
 }
 
@@ -474,6 +485,8 @@ enum ARG_KEYS {
 	ARG_LIST_TEST_NAMES = 'l',
 	ARG_TEST_NAME_GLOB_ALLOWLIST = 'a',
 	ARG_TEST_NAME_GLOB_DENYLIST = 'd',
+	ARG_NUM_WORKERS = 'j',
+	ARG_DEBUG = -1,
 };
 
 static const struct argp_option opts[] = {
@@ -495,6 +508,10 @@ static const struct argp_option opts[] = {
 	  "Run tests with name matching the pattern (supports '*' wildcard)." },
 	{ "deny", ARG_TEST_NAME_GLOB_DENYLIST, "NAMES", 0,
 	  "Don't run tests with name matching the pattern (supports '*' wildcard)." },
+	{ "workers", ARG_NUM_WORKERS, "WORKERS", OPTION_ARG_OPTIONAL,
+	  "Number of workers to run in parallel, default to number of cpus." },
+	{ "debug", ARG_DEBUG, NULL, 0,
+	  "print extra debug information for test_progs." },
 	{},
 };
 
@@ -650,7 +667,7 @@ static error_t parse_arg(int key, char *arg, struct argp_state *state)
 				fprintf(stderr,
 					"Unable to setenv SELFTESTS_VERBOSE=1 (errno=%d)",
 					errno);
-				return -1;
+				return -EINVAL;
 			}
 		}
 
@@ -661,6 +678,20 @@ static error_t parse_arg(int key, char *arg, struct argp_state *state)
 	case ARG_LIST_TEST_NAMES:
 		env->list_test_names = true;
 		break;
+	case ARG_NUM_WORKERS:
+		if (arg) {
+			env->workers = atoi(arg);
+			if (!env->workers) {
+				fprintf(stderr, "Invalid number of worker: %s.", arg);
+				return -EINVAL;
+			}
+		} else {
+			env->workers = get_nprocs();
+		}
+		break;
+	case ARG_DEBUG:
+		env->debug = true;
+		break;
 	case ARGP_KEY_ARG:
 		argp_usage(state);
 		break;
@@ -678,7 +709,7 @@ static void stdio_hijack(void)
 	env.stdout = stdout;
 	env.stderr = stderr;
 
-	if (env.verbosity > VERBOSE_NONE) {
+	if (env.verbosity > VERBOSE_NONE && env.worker_id == -1) {
 		/* nothing to do, output to stdout by default */
 		return;
 	}
@@ -704,10 +735,6 @@ static void stdio_restore(void)
 		return;
 
 	fclose(stdout);
-	free(env.log_buf);
-
-	env.log_buf = NULL;
-	env.log_cnt = 0;
 
 	stdout = env.stdout;
 	stderr = env.stderr;
@@ -794,11 +821,461 @@ void crash_handler(int signum)
 		dump_test_log(env.test, true);
 	if (env.stdout)
 		stdio_restore();
-
+	if (env.worker_id != -1)
+		fprintf(stderr, "[%d]: ", env.worker_id);
 	fprintf(stderr, "Caught signal #%d!\nStack trace:\n", signum);
 	backtrace_symbols_fd(bt, sz, STDERR_FILENO);
 }
 
+static void sigint_handler(int signum)
+{
+	int i;
+
+	for (i = 0; i < env.workers; i++)
+		if (env.worker_socks[i] > 0)
+			close(env.worker_socks[i]);
+}
+
+static int current_test_idx;
+static pthread_mutex_t current_test_lock;
+static pthread_mutex_t stdout_output_lock;
+
+struct test_result {
+	int error_cnt;
+	int skip_cnt;
+	int sub_succ_cnt;
+
+	size_t log_cnt;
+	char *log_buf;
+};
+
+static struct test_result test_results[ARRAY_SIZE(prog_test_defs)];
+
+static inline const char *str_msg(const struct msg *msg, char *buf)
+{
+	switch (msg->type) {
+	case MSG_DO_TEST:
+		sprintf(buf, "MSG_DO_TEST %d", msg->do_test.test_num);
+		break;
+	case MSG_TEST_DONE:
+		sprintf(buf, "MSG_TEST_DONE %d (log: %d)",
+			msg->test_done.test_num,
+			msg->test_done.have_log);
+		break;
+	case MSG_TEST_LOG:
+		sprintf(buf, "MSG_TEST_LOG (cnt: %ld, last: %d)",
+			strlen(msg->test_log.log_buf),
+			msg->test_log.is_last);
+		break;
+	case MSG_EXIT:
+		sprintf(buf, "MSG_EXIT");
+		break;
+	default:
+		sprintf(buf, "UNKNOWN");
+		break;
+	}
+
+	return buf;
+}
+
+static int send_message(int sock, const struct msg *msg)
+{
+	char buf[256];
+
+	if (env.debug)
+		fprintf(stderr, "Sending msg: %s\n", str_msg(msg, buf));
+	return send(sock, msg, sizeof(*msg), 0);
+}
+
+static int recv_message(int sock, struct msg *msg)
+{
+	int ret;
+	char buf[256];
+
+	memset(msg, 0, sizeof(*msg));
+	ret = recv(sock, msg, sizeof(*msg), 0);
+	if (ret >= 0) {
+		if (env.debug)
+			fprintf(stderr, "Received msg: %s\n", str_msg(msg, buf));
+	}
+	return ret;
+}
+
+static void run_one_test(int test_num)
+{
+	struct prog_test_def *test = &prog_test_defs[test_num];
+
+	env.test = test;
+
+	test->run_test();
+
+	/* ensure last sub-test is finalized properly */
+	if (test->subtest_name)
+		test__end_subtest();
+
+	test->tested = true;
+
+	dump_test_log(test, test->error_cnt);
+
+	reset_affinity();
+	restore_netns();
+	if (test->need_cgroup_cleanup)
+		cleanup_cgroup_environment();
+}
+
+struct dispatch_data {
+	int worker_id;
+	int sock_fd;
+};
+
+static void *dispatch_thread(void *ctx)
+{
+	struct dispatch_data *data = ctx;
+	int sock_fd;
+	FILE *log_fd = NULL;
+
+	sock_fd = data->sock_fd;
+
+	while (true) {
+		int test_to_run = -1;
+		struct prog_test_def *test;
+		struct test_result *result;
+
+		/* grab a test */
+		{
+			pthread_mutex_lock(&current_test_lock);
+
+			if (current_test_idx >= prog_test_cnt) {
+				pthread_mutex_unlock(&current_test_lock);
+				goto done;
+			}
+
+			test = &prog_test_defs[current_test_idx];
+			test_to_run = current_test_idx;
+			current_test_idx++;
+
+			pthread_mutex_unlock(&current_test_lock);
+		}
+
+		if (!test->should_run)
+			continue;
+
+		/* run test through worker */
+		{
+			struct msg msg_do_test;
+
+			msg_do_test.type = MSG_DO_TEST;
+			msg_do_test.do_test.test_num = test_to_run;
+			if (send_message(sock_fd, &msg_do_test) < 0) {
+				perror("Fail to send command");
+				goto done;
+			}
+			env.worker_current_test[data->worker_id] = test_to_run;
+		}
+
+		/* wait for test done */
+		{
+			int err;
+			struct msg msg_test_done;
+
+			err = recv_message(sock_fd, &msg_test_done);
+			if (err < 0)
+				goto error;
+			if (msg_test_done.type != MSG_TEST_DONE)
+				goto error;
+			if (test_to_run != msg_test_done.test_done.test_num)
+				goto error;
+
+			test->tested = true;
+			result = &test_results[test_to_run];
+
+			result->error_cnt = msg_test_done.test_done.error_cnt;
+			result->skip_cnt = msg_test_done.test_done.skip_cnt;
+			result->sub_succ_cnt = msg_test_done.test_done.sub_succ_cnt;
+
+			/* collect all logs */
+			if (msg_test_done.test_done.have_log) {
+				log_fd = open_memstream(&result->log_buf, &result->log_cnt);
+				if (!log_fd)
+					goto error;
+
+				while (true) {
+					struct msg msg_log;
+
+					if (recv_message(sock_fd, &msg_log) < 0)
+						goto error;
+					if (msg_log.type != MSG_TEST_LOG)
+						goto error;
+
+					fprintf(log_fd, "%s", msg_log.test_log.log_buf);
+					if (msg_log.test_log.is_last)
+						break;
+				}
+				fclose(log_fd);
+				log_fd = NULL;
+			}
+			/* output log */
+			{
+				pthread_mutex_lock(&stdout_output_lock);
+
+				if (result->log_cnt) {
+					result->log_buf[result->log_cnt] = '\0';
+					fprintf(stdout, "%s", result->log_buf);
+					if (result->log_buf[result->log_cnt - 1] != '\n')
+						fprintf(stdout, "\n");
+				}
+
+				fprintf(stdout, "#%d %s:%s\n",
+					test->test_num, test->test_name,
+					result->error_cnt ? "FAIL" : (result->skip_cnt ? "SKIP" : "OK"));
+
+				pthread_mutex_unlock(&stdout_output_lock);
+			}
+
+		} /* wait for test done */
+	} /* while (true) */
+error:
+	if (env.debug)
+		fprintf(stderr, "[%d]: Protocol/IO error: %s.\n", data->worker_id, strerror(errno));
+
+	if (log_fd)
+		fclose(log_fd);
+done:
+	{
+		struct msg msg_exit;
+
+		msg_exit.type = MSG_EXIT;
+		if (send_message(sock_fd, &msg_exit) < 0) {
+			if (env.debug)
+				fprintf(stderr, "[%d]: send_message msg_exit: %s.\n",
+					data->worker_id, strerror(errno));
+		}
+	}
+	return NULL;
+}
+
+static void print_all_error_logs(void)
+{
+	int i;
+
+	if (env.fail_cnt)
+		fprintf(stdout, "\nAll error logs:\n");
+
+	/* print error logs again */
+	for (i = 0; i < prog_test_cnt; i++) {
+		struct prog_test_def *test;
+		struct test_result *result;
+
+		test = &prog_test_defs[i];
+		result = &test_results[i];
+
+		if (!test->tested || !result->error_cnt)
+			continue;
+
+		fprintf(stdout, "\n#%d %s:%s\n",
+			test->test_num, test->test_name,
+			result->error_cnt ? "FAIL" : (result->skip_cnt ? "SKIP" : "OK"));
+
+		if (result->log_cnt) {
+			result->log_buf[result->log_cnt] = '\0';
+			fprintf(stdout, "%s", result->log_buf);
+			if (result->log_buf[result->log_cnt - 1] != '\n')
+				fprintf(stdout, "\n");
+		}
+	}
+}
+
+static int server_main(void)
+{
+	pthread_t *dispatcher_threads;
+	struct dispatch_data *data;
+	struct sigaction sigact_int = {
+		.sa_handler = sigint_handler,
+		.sa_flags = SA_RESETHAND,
+	};
+	int i;
+
+	sigaction(SIGINT, &sigact_int, NULL);
+
+	dispatcher_threads = calloc(sizeof(pthread_t), env.workers);
+	data = calloc(sizeof(struct dispatch_data), env.workers);
+
+	env.worker_current_test = calloc(sizeof(int), env.workers);
+	for (i = 0; i < env.workers; i++) {
+		int rc;
+
+		data[i].worker_id = i;
+		data[i].sock_fd = env.worker_socks[i];
+		rc = pthread_create(&dispatcher_threads[i], NULL, dispatch_thread, &data[i]);
+		if (rc < 0) {
+			perror("Failed to launch dispatcher thread");
+			exit(EXIT_ERR_SETUP_INFRA);
+		}
+	}
+
+	/* wait for all dispatcher to finish */
+	for (i = 0; i < env.workers; i++) {
+		while (true) {
+			int ret = pthread_tryjoin_np(dispatcher_threads[i], NULL);
+
+			if (!ret) {
+				break;
+			} else if (ret == EBUSY) {
+				if (env.debug)
+					fprintf(stderr, "Still waiting for thread %d (test %d).\n",
+						i,  env.worker_current_test[i] + 1);
+				usleep(1000 * 1000);
+				continue;
+			} else {
+				fprintf(stderr, "Unexpected error joining dispatcher thread: %d", ret);
+				break;
+			}
+		}
+	}
+	free(dispatcher_threads);
+	free(env.worker_current_test);
+	free(data);
+
+	/* generate summary */
+	fflush(stderr);
+	fflush(stdout);
+
+	for (i = 0; i < prog_test_cnt; i++) {
+		struct prog_test_def *current_test;
+		struct test_result *result;
+
+		current_test = &prog_test_defs[i];
+		result = &test_results[i];
+
+		if (!current_test->tested)
+			continue;
+
+		env.succ_cnt += result->error_cnt ? 0 : 1;
+		env.skip_cnt += result->skip_cnt;
+		if (result->error_cnt)
+			env.fail_cnt++;
+		env.sub_succ_cnt += result->sub_succ_cnt;
+	}
+
+	fprintf(stdout, "Summary: %d/%d PASSED, %d SKIPPED, %d FAILED\n",
+		env.succ_cnt, env.sub_succ_cnt, env.skip_cnt, env.fail_cnt);
+
+	print_all_error_logs();
+
+	/* reap all workers */
+	for (i = 0; i < env.workers; i++) {
+		int wstatus, pid;
+
+		pid = waitpid(env.worker_pids[i], &wstatus, 0);
+		if (pid != env.worker_pids[i])
+			perror("Unable to reap worker");
+	}
+
+	return 0;
+}
+
+static int worker_main(int sock)
+{
+	save_netns();
+
+	while (true) {
+		/* receive command */
+		struct msg msg;
+
+		if (recv_message(sock, &msg) < 0)
+			goto out;
+
+		switch (msg.type) {
+		case MSG_EXIT:
+			if (env.debug)
+				fprintf(stderr, "[%d]: worker exit.\n",
+					env.worker_id);
+			goto out;
+		case MSG_DO_TEST: {
+			int test_to_run;
+			struct prog_test_def *test;
+			struct msg msg_done;
+
+			test_to_run = msg.do_test.test_num;
+			test = &prog_test_defs[test_to_run];
+
+			if (env.debug)
+				fprintf(stderr, "[%d]: #%d:%s running.\n",
+					env.worker_id,
+					test_to_run + 1,
+					test->test_name);
+
+			stdio_hijack();
+
+			run_one_test(test_to_run);
+
+			stdio_restore();
+
+			memset(&msg_done, 0, sizeof(msg_done));
+			msg_done.type = MSG_TEST_DONE;
+			msg_done.test_done.test_num = test_to_run;
+			msg_done.test_done.error_cnt = test->error_cnt;
+			msg_done.test_done.skip_cnt = test->skip_cnt;
+			msg_done.test_done.sub_succ_cnt = test->sub_succ_cnt;
+			msg_done.test_done.have_log = false;
+
+			if (env.verbosity > VERBOSE_NONE || test->force_log || test->error_cnt) {
+				if (env.log_cnt)
+					msg_done.test_done.have_log = true;
+			}
+			if (send_message(sock, &msg_done) < 0) {
+				perror("Fail to send message done");
+				goto out;
+			}
+
+			/* send logs */
+			if (msg_done.test_done.have_log) {
+				char *src;
+				size_t slen;
+
+				src = env.log_buf;
+				slen = env.log_cnt;
+				while (slen) {
+					struct msg msg_log;
+					char *dest;
+					size_t len;
+
+					memset(&msg_log, 0, sizeof(msg_log));
+					msg_log.type = MSG_TEST_LOG;
+					dest = msg_log.test_log.log_buf;
+					len = slen >= MAX_LOG_TRUNK_SIZE ? MAX_LOG_TRUNK_SIZE : slen;
+					memcpy(dest, src, len);
+
+					src += len;
+					slen -= len;
+					if (!slen)
+						msg_log.test_log.is_last = true;
+
+					assert(send_message(sock, &msg_log) >= 0);
+				}
+			}
+			if (env.log_buf) {
+				free(env.log_buf);
+				env.log_buf = NULL;
+				env.log_cnt = 0;
+			}
+			if (env.debug)
+				fprintf(stderr, "[%d]: #%d:%s done.\n",
+					env.worker_id,
+					test_to_run + 1,
+					test->test_name);
+			break;
+		} /* case MSG_DO_TEST */
+		default:
+			if (env.debug)
+				fprintf(stderr, "[%d]: unknown message.\n",  env.worker_id);
+			return -1;
+		}
+	}
+out:
+	return 0;
+}
+
 int main(int argc, char **argv)
 {
 	static const struct argp argp = {
@@ -809,7 +1286,7 @@ int main(int argc, char **argv)
 	struct sigaction sigact = {
 		.sa_handler = crash_handler,
 		.sa_flags = SA_RESETHAND,
-	};
+		};
 	int err, i;
 
 	sigaction(SIGSEGV, &sigact, NULL);
@@ -837,21 +1314,77 @@ int main(int argc, char **argv)
 		return -1;
 	}
 
-	save_netns();
-	stdio_hijack();
+	env.stdout = stdout;
+	env.stderr = stderr;
+
 	env.has_testmod = true;
 	if (!env.list_test_names && load_bpf_testmod()) {
 		fprintf(env.stderr, "WARNING! Selftests relying on bpf_testmod.ko will be skipped.\n");
 		env.has_testmod = false;
 	}
+
+	/* initializing tests */
 	for (i = 0; i < prog_test_cnt; i++) {
 		struct prog_test_def *test = &prog_test_defs[i];
 
-		env.test = test;
 		test->test_num = i + 1;
-
-		if (!should_run(&env.test_selector,
+		if (should_run(&env.test_selector,
 				test->test_num, test->test_name))
+			test->should_run = true;
+		else
+			test->should_run = false;
+	}
+
+	/* ignore workers if we are just listing */
+	if (env.get_test_cnt || env.list_test_names)
+		env.workers = 0;
+
+	/* launch workers if requested */
+	env.worker_id = -1; /* main process */
+	if (env.workers) {
+		env.worker_pids = calloc(sizeof(__pid_t), env.workers);
+		env.worker_socks = calloc(sizeof(int), env.workers);
+		if (env.debug)
+			fprintf(stdout, "Launching %d workers.\n", env.workers);
+		for (i = 0; i < env.workers; i++) {
+			int sv[2];
+			pid_t pid;
+
+			if (socketpair(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC, 0, sv) < 0) {
+				perror("Fail to create worker socket");
+				return -1;
+			}
+			pid = fork();
+			if (pid < 0) {
+				perror("Failed to fork worker");
+				return -1;
+			} else if (pid != 0) { /* main process */
+				close(sv[1]);
+				env.worker_pids[i] = pid;
+				env.worker_socks[i] = sv[0];
+			} else { /* inside each worker process */
+				close(sv[0]);
+				env.worker_id = i;
+				return worker_main(sv[1]);
+			}
+		}
+
+		if (env.worker_id == -1) {
+			server_main();
+			goto out;
+		}
+	}
+
+	/* The rest of the main process */
+
+	/* on single mode */
+	save_netns();
+
+	for (i = 0; i < prog_test_cnt; i++) {
+		struct prog_test_def *test = &prog_test_defs[i];
+		struct test_result *result;
+
+		if (!test->should_run)
 			continue;
 
 		if (env.get_test_cnt) {
@@ -865,33 +1398,35 @@ int main(int argc, char **argv)
 			continue;
 		}
 
-		test->run_test();
-		/* ensure last sub-test is finalized properly */
-		if (test->subtest_name)
-			test__end_subtest();
+		stdio_hijack();
 
-		test->tested = true;
+		run_one_test(i);
 
-		dump_test_log(test, test->error_cnt);
+		stdio_restore();
 
 		fprintf(env.stdout, "#%d %s:%s\n",
 			test->test_num, test->test_name,
 			test->error_cnt ? "FAIL" : (test->skip_cnt ? "SKIP" : "OK"));
 
+		result = &test_results[i];
+		result->error_cnt = test->error_cnt;
+		if (env.log_buf) {
+			result->log_buf = strdup(env.log_buf);
+			result->log_cnt = env.log_cnt;
+
+			free(env.log_buf);
+			env.log_buf = NULL;
+			env.log_cnt = 0;
+		}
+
 		if (test->error_cnt)
 			env.fail_cnt++;
 		else
 			env.succ_cnt++;
-		skip_account();
 
-		reset_affinity();
-		restore_netns();
-		if (test->need_cgroup_cleanup)
-			cleanup_cgroup_environment();
+		skip_account();
+		env.sub_succ_cnt += test->sub_succ_cnt;
 	}
-	if (!env.list_test_names && env.has_testmod)
-		unload_bpf_testmod();
-	stdio_restore();
 
 	if (env.get_test_cnt) {
 		printf("%d\n", env.succ_cnt);
@@ -904,14 +1439,18 @@ int main(int argc, char **argv)
 	fprintf(stdout, "Summary: %d/%d PASSED, %d SKIPPED, %d FAILED\n",
 		env.succ_cnt, env.sub_succ_cnt, env.skip_cnt, env.fail_cnt);
 
+	print_all_error_logs();
+
+	close(env.saved_netns_fd);
 out:
+	if (!env.list_test_names && env.has_testmod)
+		unload_bpf_testmod();
 	free_str_set(&env.test_selector.blacklist);
 	free_str_set(&env.test_selector.whitelist);
 	free(env.test_selector.num_set);
 	free_str_set(&env.subtest_selector.blacklist);
 	free_str_set(&env.subtest_selector.whitelist);
 	free(env.subtest_selector.num_set);
-	close(env.saved_netns_fd);
 
 	if (env.succ_cnt + env.fail_cnt + env.skip_cnt == 0)
 		return EXIT_NO_TEST;
diff --git a/tools/testing/selftests/bpf/test_progs.h b/tools/testing/selftests/bpf/test_progs.h
index 9b8a1810b700..93c1ff705533 100644
--- a/tools/testing/selftests/bpf/test_progs.h
+++ b/tools/testing/selftests/bpf/test_progs.h
@@ -62,6 +62,7 @@ struct test_env {
 	struct test_selector test_selector;
 	struct test_selector subtest_selector;
 	bool verifier_stats;
+	bool debug;
 	enum verbosity verbosity;
 
 	bool jit_enabled;
@@ -69,7 +70,8 @@ struct test_env {
 	bool get_test_cnt;
 	bool list_test_names;
 
-	struct prog_test_def *test;
+	struct prog_test_def *test; /* current running tests */
+
 	FILE *stdout;
 	FILE *stderr;
 	char *log_buf;
@@ -82,6 +84,38 @@ struct test_env {
 	int skip_cnt; /* skipped tests */
 
 	int saved_netns_fd;
+	int workers; /* number of worker process */
+	int worker_id; /* id number of current worker, main process is -1 */
+	pid_t *worker_pids; /* array of worker pids */
+	int *worker_socks; /* array of worker socks */
+	int *worker_current_test; /* array of current running test for each worker */
+};
+
+#define MAX_LOG_TRUNK_SIZE 8192
+enum msg_type {
+	MSG_DO_TEST = 0,
+	MSG_TEST_DONE = 1,
+	MSG_TEST_LOG = 2,
+	MSG_EXIT = 255,
+};
+struct msg {
+	enum msg_type type;
+	union {
+		struct {
+			int test_num;
+		} do_test;
+		struct {
+			int test_num;
+			int sub_succ_cnt;
+			int error_cnt;
+			int skip_cnt;
+			bool have_log;
+		} test_done;
+		struct {
+			char log_buf[MAX_LOG_TRUNK_SIZE + 1];
+			bool is_last;
+		} test_log;
+	};
 };
 
 extern struct test_env env;
-- 
cgit v1.2.3


From 6587ff58cea4a7f252b8bbc4031a1bf4ec3781d8 Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Wed, 6 Oct 2021 11:56:07 -0700
Subject: selftests/bpf: Allow some tests to be executed in sequence

This patch allows tests to define serial_test_name() instead of
test_name(), and this will make test_progs execute those in sequence
after all other tests finished executing concurrently.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-3-fallentree@fb.com
---
 tools/testing/selftests/bpf/test_progs.c | 60 ++++++++++++++++++++++++++++----
 1 file changed, 54 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index 20dd1e2f8d06..1f4a48566991 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -50,6 +50,7 @@ struct prog_test_def {
 	const char *test_name;
 	int test_num;
 	void (*run_test)(void);
+	void (*run_serial_test)(void);
 	bool force_log;
 	int error_cnt;
 	int skip_cnt;
@@ -457,14 +458,17 @@ static int load_bpf_testmod(void)
 }
 
 /* extern declarations for test funcs */
-#define DEFINE_TEST(name) extern void test_##name(void);
+#define DEFINE_TEST(name)				\
+	extern void test_##name(void) __weak;		\
+	extern void serial_test_##name(void) __weak;
 #include <prog_tests/tests.h>
 #undef DEFINE_TEST
 
 static struct prog_test_def prog_test_defs[] = {
-#define DEFINE_TEST(name) {		\
-	.test_name = #name,		\
-	.run_test = &test_##name,	\
+#define DEFINE_TEST(name) {			\
+	.test_name = #name,			\
+	.run_test = &test_##name,		\
+	.run_serial_test = &serial_test_##name,	\
 },
 #include <prog_tests/tests.h>
 #undef DEFINE_TEST
@@ -907,7 +911,10 @@ static void run_one_test(int test_num)
 
 	env.test = test;
 
-	test->run_test();
+	if (test->run_test)
+		test->run_test();
+	else if (test->run_serial_test)
+		test->run_serial_test();
 
 	/* ensure last sub-test is finalized properly */
 	if (test->subtest_name)
@@ -957,7 +964,7 @@ static void *dispatch_thread(void *ctx)
 			pthread_mutex_unlock(&current_test_lock);
 		}
 
-		if (!test->should_run)
+		if (!test->should_run || test->run_serial_test)
 			continue;
 
 		/* run test through worker */
@@ -1136,6 +1143,40 @@ static int server_main(void)
 	free(env.worker_current_test);
 	free(data);
 
+	/* run serial tests */
+	save_netns();
+
+	for (int i = 0; i < prog_test_cnt; i++) {
+		struct prog_test_def *test = &prog_test_defs[i];
+		struct test_result *result = &test_results[i];
+
+		if (!test->should_run || !test->run_serial_test)
+			continue;
+
+		stdio_hijack();
+
+		run_one_test(i);
+
+		stdio_restore();
+		if (env.log_buf) {
+			result->log_cnt = env.log_cnt;
+			result->log_buf = strdup(env.log_buf);
+
+			free(env.log_buf);
+			env.log_buf = NULL;
+			env.log_cnt = 0;
+		}
+		restore_netns();
+
+		fprintf(stdout, "#%d %s:%s\n",
+			test->test_num, test->test_name,
+			test->error_cnt ? "FAIL" : (test->skip_cnt ? "SKIP" : "OK"));
+
+		result->error_cnt = test->error_cnt;
+		result->skip_cnt = test->skip_cnt;
+		result->sub_succ_cnt = test->sub_succ_cnt;
+	}
+
 	/* generate summary */
 	fflush(stderr);
 	fflush(stdout);
@@ -1333,6 +1374,13 @@ int main(int argc, char **argv)
 			test->should_run = true;
 		else
 			test->should_run = false;
+
+		if ((test->run_test == NULL && test->run_serial_test == NULL) ||
+		    (test->run_test != NULL && test->run_serial_test != NULL)) {
+			fprintf(stderr, "Test %d:%s must have either test_%s() or serial_test_%sl() defined.\n",
+				test->test_num, test->test_name, test->test_name, test->test_name);
+			exit(EXIT_ERR_SETUP_INFRA);
+		}
 	}
 
 	/* ignore workers if we are just listing */
-- 
cgit v1.2.3


From e87c3434f81ae566693cfdc22370dc938b2989dd Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Wed, 6 Oct 2021 11:56:09 -0700
Subject: selftests/bpf: Add per worker cgroup suffix

This patch make each worker use a unique cgroup base directory, thus
allowing tests that uses cgroups to run concurrently.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-5-fallentree@fb.com
---
 tools/testing/selftests/bpf/cgroup_helpers.c | 6 +++---
 tools/testing/selftests/bpf/cgroup_helpers.h | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/cgroup_helpers.c b/tools/testing/selftests/bpf/cgroup_helpers.c
index f3daa44a8266..8fcd44841bb2 100644
--- a/tools/testing/selftests/bpf/cgroup_helpers.c
+++ b/tools/testing/selftests/bpf/cgroup_helpers.c
@@ -11,6 +11,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <ftw.h>
+#include <unistd.h>
 
 #include "cgroup_helpers.h"
 
@@ -33,10 +34,9 @@
 #define CGROUP_MOUNT_DFLT		"/sys/fs/cgroup"
 #define NETCLS_MOUNT_PATH		CGROUP_MOUNT_DFLT "/net_cls"
 #define CGROUP_WORK_DIR			"/cgroup-test-work-dir"
-
 #define format_cgroup_path(buf, path) \
-	snprintf(buf, sizeof(buf), "%s%s%s", CGROUP_MOUNT_PATH, \
-		 CGROUP_WORK_DIR, path)
+	snprintf(buf, sizeof(buf), "%s%s%d%s", CGROUP_MOUNT_PATH, \
+	CGROUP_WORK_DIR, getpid(), path)
 
 #define format_classid_path(buf)				\
 	snprintf(buf, sizeof(buf), "%s%s", NETCLS_MOUNT_PATH,	\
diff --git a/tools/testing/selftests/bpf/cgroup_helpers.h b/tools/testing/selftests/bpf/cgroup_helpers.h
index 629da3854b3e..fcc9cb91b211 100644
--- a/tools/testing/selftests/bpf/cgroup_helpers.h
+++ b/tools/testing/selftests/bpf/cgroup_helpers.h
@@ -26,4 +26,4 @@ int join_classid(void);
 int setup_classid_environment(void);
 void cleanup_classid_environment(void);
 
-#endif /* __CGROUP_HELPERS_H */
+#endif /* __CGROUP_HELPERS_H */
\ No newline at end of file
-- 
cgit v1.2.3


From d719de0d2f3cbdb5890a147b90a51c5eaaef103e Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Wed, 6 Oct 2021 11:56:11 -0700
Subject: selftests/bpf: Fix race condition in enable_stats

In parallel execution mode, this test now need to use atomic operation
to avoid race condition.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-7-fallentree@fb.com
---
 tools/testing/selftests/bpf/progs/test_enable_stats.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/test_enable_stats.c b/tools/testing/selftests/bpf/progs/test_enable_stats.c
index 01a002ade529..1705097d01d7 100644
--- a/tools/testing/selftests/bpf/progs/test_enable_stats.c
+++ b/tools/testing/selftests/bpf/progs/test_enable_stats.c
@@ -13,6 +13,6 @@ __u64 count = 0;
 SEC("raw_tracepoint/sys_enter")
 int test_enable_stats(void *ctx)
 {
-	count += 1;
+	__sync_fetch_and_add(&count, 1);
 	return 0;
 }
-- 
cgit v1.2.3


From 445e72c782a1f770440e229afeb0c4e386da943c Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Wed, 6 Oct 2021 11:56:12 -0700
Subject: selftests/bpf: Make cgroup_v1v2 use its own port

This patch change cgroup_v1v2 use a different port, avoid conflict with
other tests.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-8-fallentree@fb.com
---
 tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c | 2 +-
 tools/testing/selftests/bpf/progs/connect4_dropper.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c b/tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c
index ab3b9bc5e6d1..9026b42914d3 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgroup_v1v2.c
@@ -46,7 +46,7 @@ void test_cgroup_v1v2(void)
 {
 	struct network_helper_opts opts = {};
 	int server_fd, client_fd, cgroup_fd;
-	static const int port = 60123;
+	static const int port = 60120;
 
 	/* Step 1: Check base connectivity works without any BPF. */
 	server_fd = start_server(AF_INET, SOCK_STREAM, NULL, port, 0);
diff --git a/tools/testing/selftests/bpf/progs/connect4_dropper.c b/tools/testing/selftests/bpf/progs/connect4_dropper.c
index b565d997810a..d3f4c5e4fb69 100644
--- a/tools/testing/selftests/bpf/progs/connect4_dropper.c
+++ b/tools/testing/selftests/bpf/progs/connect4_dropper.c
@@ -18,7 +18,7 @@ int connect_v4_dropper(struct bpf_sock_addr *ctx)
 {
 	if (ctx->type != SOCK_STREAM)
 		return VERDICT_PROCEED;
-	if (ctx->user_port == bpf_htons(60123))
+	if (ctx->user_port == bpf_htons(60120))
 		return VERDICT_REJECT;
 	return VERDICT_PROCEED;
 }
-- 
cgit v1.2.3


From 0f4feacc9155776fd2c7f1c7bcb41001d94990a0 Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Wed, 6 Oct 2021 11:56:15 -0700
Subject: selftests/bpf: Adding pid filtering for atomics test

This make atomics test able to run in parallel with other tests.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-11-fallentree@fb.com
---
 tools/testing/selftests/bpf/prog_tests/atomics.c |  1 +
 tools/testing/selftests/bpf/progs/atomics.c      | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/atomics.c b/tools/testing/selftests/bpf/prog_tests/atomics.c
index ba0e1efe5a45..1486be5d3209 100644
--- a/tools/testing/selftests/bpf/prog_tests/atomics.c
+++ b/tools/testing/selftests/bpf/prog_tests/atomics.c
@@ -225,6 +225,7 @@ void test_atomics(void)
 		test__skip();
 		goto cleanup;
 	}
+	skel->bss->pid = getpid();
 
 	if (test__start_subtest("add"))
 		test_add(skel);
diff --git a/tools/testing/selftests/bpf/progs/atomics.c b/tools/testing/selftests/bpf/progs/atomics.c
index c245345e41ca..16e57313204a 100644
--- a/tools/testing/selftests/bpf/progs/atomics.c
+++ b/tools/testing/selftests/bpf/progs/atomics.c
@@ -10,6 +10,8 @@ bool skip_tests __attribute((__section__(".data"))) = false;
 bool skip_tests = true;
 #endif
 
+__u32 pid = 0;
+
 __u64 add64_value = 1;
 __u64 add64_result = 0;
 __u32 add32_value = 1;
@@ -21,6 +23,8 @@ __u64 add_noreturn_value = 1;
 SEC("fentry/bpf_fentry_test1")
 int BPF_PROG(add, int a)
 {
+	if (pid != (bpf_get_current_pid_tgid() >> 32))
+		return 0;
 #ifdef ENABLE_ATOMICS_TESTS
 	__u64 add_stack_value = 1;
 
@@ -45,6 +49,8 @@ __s64 sub_noreturn_value = 1;
 SEC("fentry/bpf_fentry_test1")
 int BPF_PROG(sub, int a)
 {
+	if (pid != (bpf_get_current_pid_tgid() >> 32))
+		return 0;
 #ifdef ENABLE_ATOMICS_TESTS
 	__u64 sub_stack_value = 1;
 
@@ -67,6 +73,8 @@ __u64 and_noreturn_value = (0x110ull << 32);
 SEC("fentry/bpf_fentry_test1")
 int BPF_PROG(and, int a)
 {
+	if (pid != (bpf_get_current_pid_tgid() >> 32))
+		return 0;
 #ifdef ENABLE_ATOMICS_TESTS
 
 	and64_result = __sync_fetch_and_and(&and64_value, 0x011ull << 32);
@@ -86,6 +94,8 @@ __u64 or_noreturn_value = (0x110ull << 32);
 SEC("fentry/bpf_fentry_test1")
 int BPF_PROG(or, int a)
 {
+	if (pid != (bpf_get_current_pid_tgid() >> 32))
+		return 0;
 #ifdef ENABLE_ATOMICS_TESTS
 	or64_result = __sync_fetch_and_or(&or64_value, 0x011ull << 32);
 	or32_result = __sync_fetch_and_or(&or32_value, 0x011);
@@ -104,6 +114,8 @@ __u64 xor_noreturn_value = (0x110ull << 32);
 SEC("fentry/bpf_fentry_test1")
 int BPF_PROG(xor, int a)
 {
+	if (pid != (bpf_get_current_pid_tgid() >> 32))
+		return 0;
 #ifdef ENABLE_ATOMICS_TESTS
 	xor64_result = __sync_fetch_and_xor(&xor64_value, 0x011ull << 32);
 	xor32_result = __sync_fetch_and_xor(&xor32_value, 0x011);
@@ -123,6 +135,8 @@ __u32 cmpxchg32_result_succeed = 0;
 SEC("fentry/bpf_fentry_test1")
 int BPF_PROG(cmpxchg, int a)
 {
+	if (pid != (bpf_get_current_pid_tgid() >> 32))
+		return 0;
 #ifdef ENABLE_ATOMICS_TESTS
 	cmpxchg64_result_fail = __sync_val_compare_and_swap(&cmpxchg64_value, 0, 3);
 	cmpxchg64_result_succeed = __sync_val_compare_and_swap(&cmpxchg64_value, 1, 2);
@@ -142,6 +156,8 @@ __u32 xchg32_result = 0;
 SEC("fentry/bpf_fentry_test1")
 int BPF_PROG(xchg, int a)
 {
+	if (pid != (bpf_get_current_pid_tgid() >> 32))
+		return 0;
 #ifdef ENABLE_ATOMICS_TESTS
 	__u64 val64 = 2;
 	__u32 val32 = 2;
-- 
cgit v1.2.3


From 5db02dd7f09fdc32fa3866386784d383aca191d8 Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Wed, 6 Oct 2021 11:56:17 -0700
Subject: selftests/bpf: Fix pid check in fexit_sleep test

bpf_get_current_pid_tgid() returns u64, whose upper 32 bits are the same
as userspace getpid() return value.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-13-fallentree@fb.com
---
 tools/testing/selftests/bpf/progs/fexit_sleep.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/fexit_sleep.c b/tools/testing/selftests/bpf/progs/fexit_sleep.c
index 03a672d76353..bca92c9bd29a 100644
--- a/tools/testing/selftests/bpf/progs/fexit_sleep.c
+++ b/tools/testing/selftests/bpf/progs/fexit_sleep.c
@@ -13,7 +13,7 @@ int fexit_cnt = 0;
 SEC("fentry/__x64_sys_nanosleep")
 int BPF_PROG(nanosleep_fentry, const struct pt_regs *regs)
 {
-	if ((int)bpf_get_current_pid_tgid() != pid)
+	if (bpf_get_current_pid_tgid() >> 32 != pid)
 		return 0;
 
 	fentry_cnt++;
@@ -23,7 +23,7 @@ int BPF_PROG(nanosleep_fentry, const struct pt_regs *regs)
 SEC("fexit/__x64_sys_nanosleep")
 int BPF_PROG(nanosleep_fexit, const struct pt_regs *regs, int ret)
 {
-	if ((int)bpf_get_current_pid_tgid() != pid)
+	if (bpf_get_current_pid_tgid() >> 32 != pid)
 		return 0;
 
 	fexit_cnt++;
-- 
cgit v1.2.3


From d3f7b1664d3ebd69751327f45f5cd4adfb29f620 Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Wed, 6 Oct 2021 11:56:19 -0700
Subject: selfetest/bpf: Make some tests serial

Change tests that often fails in parallel execution mode to serial.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-15-fallentree@fb.com
---
 tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt.c       | 2 +-
 tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c                | 2 +-
 tools/testing/selftests/bpf/prog_tests/cg_storage_multi.c          | 2 +-
 tools/testing/selftests/bpf/prog_tests/cgroup_attach_autodetach.c  | 2 +-
 tools/testing/selftests/bpf/prog_tests/cgroup_attach_multi.c       | 2 +-
 tools/testing/selftests/bpf/prog_tests/cgroup_attach_override.c    | 2 +-
 tools/testing/selftests/bpf/prog_tests/cgroup_link.c               | 2 +-
 tools/testing/selftests/bpf/prog_tests/check_mtu.c                 | 2 +-
 tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c             | 3 ++-
 tools/testing/selftests/bpf/prog_tests/flow_dissector_load_bytes.c | 2 +-
 tools/testing/selftests/bpf/prog_tests/flow_dissector_reattach.c   | 2 +-
 tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c       | 2 +-
 tools/testing/selftests/bpf/prog_tests/kfree_skb.c                 | 3 ++-
 tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c         | 2 +-
 tools/testing/selftests/bpf/prog_tests/modify_return.c             | 3 ++-
 tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c       | 3 ++-
 tools/testing/selftests/bpf/prog_tests/perf_buffer.c               | 2 +-
 tools/testing/selftests/bpf/prog_tests/perf_link.c                 | 3 ++-
 tools/testing/selftests/bpf/prog_tests/probe_user.c                | 3 ++-
 tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c  | 3 ++-
 tools/testing/selftests/bpf/prog_tests/select_reuseport.c          | 2 +-
 tools/testing/selftests/bpf/prog_tests/send_signal_sched_switch.c  | 3 ++-
 tools/testing/selftests/bpf/prog_tests/sk_storage_tracing.c        | 2 +-
 tools/testing/selftests/bpf/prog_tests/snprintf_btf.c              | 2 +-
 tools/testing/selftests/bpf/prog_tests/sock_fields.c               | 2 +-
 tools/testing/selftests/bpf/prog_tests/sockmap_listen.c            | 2 +-
 tools/testing/selftests/bpf/prog_tests/timer.c                     | 3 ++-
 tools/testing/selftests/bpf/prog_tests/timer_mim.c                 | 2 +-
 tools/testing/selftests/bpf/prog_tests/tp_attach_query.c           | 2 +-
 tools/testing/selftests/bpf/prog_tests/trace_printk.c              | 2 +-
 tools/testing/selftests/bpf/prog_tests/trace_vprintk.c             | 2 +-
 tools/testing/selftests/bpf/prog_tests/trampoline_count.c          | 3 ++-
 tools/testing/selftests/bpf/prog_tests/xdp_attach.c                | 2 +-
 tools/testing/selftests/bpf/prog_tests/xdp_bonding.c               | 2 +-
 tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c         | 2 +-
 tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c         | 2 +-
 tools/testing/selftests/bpf/prog_tests/xdp_info.c                  | 2 +-
 tools/testing/selftests/bpf/prog_tests/xdp_link.c                  | 2 +-
 38 files changed, 48 insertions(+), 38 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt.c
index 85babb0487b3..b52ff8ce34db 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt.c
@@ -179,7 +179,7 @@ done:
 	free_fds(est_fds, nr_est);
 }
 
-void test_bpf_iter_setsockopt(void)
+void serial_test_bpf_iter_setsockopt(void)
 {
 	struct bpf_iter_setsockopt *iter_skel = NULL;
 	struct bpf_cubic *cubic_skel = NULL;
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c b/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c
index 284d5921c345..eb8eeebe6935 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_obj_id.c
@@ -3,7 +3,7 @@
 
 #define nr_iters 2
 
-void test_bpf_obj_id(void)
+void serial_test_bpf_obj_id(void)
 {
 	const __u64 array_magic_value = 0xfaceb00c;
 	const __u32 array_key = 0;
diff --git a/tools/testing/selftests/bpf/prog_tests/cg_storage_multi.c b/tools/testing/selftests/bpf/prog_tests/cg_storage_multi.c
index 876be0ecb654..621c57222191 100644
--- a/tools/testing/selftests/bpf/prog_tests/cg_storage_multi.c
+++ b/tools/testing/selftests/bpf/prog_tests/cg_storage_multi.c
@@ -363,7 +363,7 @@ close_bpf_object:
 	cg_storage_multi_shared__destroy(obj);
 }
 
-void test_cg_storage_multi(void)
+void serial_test_cg_storage_multi(void)
 {
 	int parent_cgroup_fd = -1, child_cgroup_fd = -1;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_attach_autodetach.c b/tools/testing/selftests/bpf/prog_tests/cgroup_attach_autodetach.c
index 70e94e783070..5de485c7370f 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgroup_attach_autodetach.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgroup_attach_autodetach.c
@@ -21,7 +21,7 @@ static int prog_load(void)
 			       bpf_log_buf, BPF_LOG_BUF_SIZE);
 }
 
-void test_cgroup_attach_autodetach(void)
+void serial_test_cgroup_attach_autodetach(void)
 {
 	__u32 duration = 0, prog_cnt = 4, attach_flags;
 	int allow_prog[2] = {-1};
diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_attach_multi.c b/tools/testing/selftests/bpf/prog_tests/cgroup_attach_multi.c
index 20bb8831dda6..731bea84d8ed 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgroup_attach_multi.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgroup_attach_multi.c
@@ -74,7 +74,7 @@ static int prog_load_cnt(int verdict, int val)
 	return ret;
 }
 
-void test_cgroup_attach_multi(void)
+void serial_test_cgroup_attach_multi(void)
 {
 	__u32 prog_ids[4], prog_cnt = 0, attach_flags, saved_prog_id;
 	int cg1 = 0, cg2 = 0, cg3 = 0, cg4 = 0, cg5 = 0, key = 0;
diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_attach_override.c b/tools/testing/selftests/bpf/prog_tests/cgroup_attach_override.c
index 9e96f8d87fea..10d3c33821a7 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgroup_attach_override.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgroup_attach_override.c
@@ -23,7 +23,7 @@ static int prog_load(int verdict)
 			       bpf_log_buf, BPF_LOG_BUF_SIZE);
 }
 
-void test_cgroup_attach_override(void)
+void serial_test_cgroup_attach_override(void)
 {
 	int drop_prog = -1, allow_prog = -1, foo = -1, bar = -1;
 	__u32 duration = 0;
diff --git a/tools/testing/selftests/bpf/prog_tests/cgroup_link.c b/tools/testing/selftests/bpf/prog_tests/cgroup_link.c
index 9091524131d6..9e6e6aad347c 100644
--- a/tools/testing/selftests/bpf/prog_tests/cgroup_link.c
+++ b/tools/testing/selftests/bpf/prog_tests/cgroup_link.c
@@ -24,7 +24,7 @@ int ping_and_check(int exp_calls, int exp_alt_calls)
 	return 0;
 }
 
-void test_cgroup_link(void)
+void serial_test_cgroup_link(void)
 {
 	struct {
 		const char *path;
diff --git a/tools/testing/selftests/bpf/prog_tests/check_mtu.c b/tools/testing/selftests/bpf/prog_tests/check_mtu.c
index 012068f33a0a..f73e6e36b74d 100644
--- a/tools/testing/selftests/bpf/prog_tests/check_mtu.c
+++ b/tools/testing/selftests/bpf/prog_tests/check_mtu.c
@@ -195,7 +195,7 @@ cleanup:
 	test_check_mtu__destroy(skel);
 }
 
-void test_check_mtu(void)
+void serial_test_check_mtu(void)
 {
 	__u32 mtu_lo;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
index 2839f4270a26..9cff14a23bb7 100644
--- a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
+++ b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c
@@ -380,7 +380,8 @@ static void test_func_map_prog_compatibility(void)
 				     "./test_attach_probe.o");
 }
 
-void test_fexit_bpf2bpf(void)
+/* NOTE: affect other tests, must run in serial mode */
+void serial_test_fexit_bpf2bpf(void)
 {
 	if (test__start_subtest("target_no_callees"))
 		test_target_no_callees();
diff --git a/tools/testing/selftests/bpf/prog_tests/flow_dissector_load_bytes.c b/tools/testing/selftests/bpf/prog_tests/flow_dissector_load_bytes.c
index 0e8a4d2f023d..6093728497c7 100644
--- a/tools/testing/selftests/bpf/prog_tests/flow_dissector_load_bytes.c
+++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector_load_bytes.c
@@ -2,7 +2,7 @@
 #include <test_progs.h>
 #include <network_helpers.h>
 
-void test_flow_dissector_load_bytes(void)
+void serial_test_flow_dissector_load_bytes(void)
 {
 	struct bpf_flow_keys flow_keys;
 	__u32 duration = 0, retval, size;
diff --git a/tools/testing/selftests/bpf/prog_tests/flow_dissector_reattach.c b/tools/testing/selftests/bpf/prog_tests/flow_dissector_reattach.c
index 3931ede5c534..f0c6c226aba8 100644
--- a/tools/testing/selftests/bpf/prog_tests/flow_dissector_reattach.c
+++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector_reattach.c
@@ -628,7 +628,7 @@ out_close:
 	}
 }
 
-void test_flow_dissector_reattach(void)
+void serial_test_flow_dissector_reattach(void)
 {
 	int err, new_net, saved_net;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
index e4f92feb7b32..d6d70a359aeb 100644
--- a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
+++ b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
@@ -73,7 +73,7 @@ static void close_perf_events(void)
 	free(pfd_array);
 }
 
-void test_get_branch_snapshot(void)
+void serial_test_get_branch_snapshot(void)
 {
 	struct get_branch_snapshot *skel = NULL;
 	int err;
diff --git a/tools/testing/selftests/bpf/prog_tests/kfree_skb.c b/tools/testing/selftests/bpf/prog_tests/kfree_skb.c
index ddfb6bf97152..032a322d51f2 100644
--- a/tools/testing/selftests/bpf/prog_tests/kfree_skb.c
+++ b/tools/testing/selftests/bpf/prog_tests/kfree_skb.c
@@ -48,7 +48,8 @@ static void on_sample(void *ctx, int cpu, void *data, __u32 size)
 	*(bool *)ctx = true;
 }
 
-void test_kfree_skb(void)
+/* TODO: fix kernel panic caused by this test in parallel mode */
+void serial_test_kfree_skb(void)
 {
 	struct __sk_buff skb = {};
 	struct bpf_prog_test_run_attr tattr = {
diff --git a/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c b/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c
index 59adb4715394..7589c03fd26b 100644
--- a/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c
+++ b/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c
@@ -541,7 +541,7 @@ close_servers:
 	}
 }
 
-void test_migrate_reuseport(void)
+void serial_test_migrate_reuseport(void)
 {
 	struct test_migrate_reuseport *skel;
 	int i;
diff --git a/tools/testing/selftests/bpf/prog_tests/modify_return.c b/tools/testing/selftests/bpf/prog_tests/modify_return.c
index 97fec70c600b..b772fe30ce9b 100644
--- a/tools/testing/selftests/bpf/prog_tests/modify_return.c
+++ b/tools/testing/selftests/bpf/prog_tests/modify_return.c
@@ -53,7 +53,8 @@ cleanup:
 	modify_return__destroy(skel);
 }
 
-void test_modify_return(void)
+/* TODO: conflict with get_func_ip_test */
+void serial_test_modify_return(void)
 {
 	run_test(0 /* input_retval */,
 		 1 /* want_side_effect */,
diff --git a/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c b/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
index 2535788e135f..24d493482ffc 100644
--- a/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
+++ b/tools/testing/selftests/bpf/prog_tests/ns_current_pid_tgid.c
@@ -78,7 +78,8 @@ static void test_ns_current_pid_tgid_new_ns(void)
 		return;
 }
 
-void test_ns_current_pid_tgid(void)
+/* TODO: use a different tracepoint */
+void serial_test_ns_current_pid_tgid(void)
 {
 	if (test__start_subtest("ns_current_pid_tgid_root_ns"))
 		test_current_pid_tgid(NULL);
diff --git a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
index 6490e9673002..6979aff4aab2 100644
--- a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
+++ b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
@@ -43,7 +43,7 @@ int trigger_on_cpu(int cpu)
 	return 0;
 }
 
-void test_perf_buffer(void)
+void serial_test_perf_buffer(void)
 {
 	int err, on_len, nr_on_cpus = 0, nr_cpus, i;
 	struct perf_buffer_opts pb_opts = {};
diff --git a/tools/testing/selftests/bpf/prog_tests/perf_link.c b/tools/testing/selftests/bpf/prog_tests/perf_link.c
index b1abd0c46607..ede07344f264 100644
--- a/tools/testing/selftests/bpf/prog_tests/perf_link.c
+++ b/tools/testing/selftests/bpf/prog_tests/perf_link.c
@@ -23,7 +23,8 @@ static void burn_cpu(void)
 		++j;
 }
 
-void test_perf_link(void)
+/* TODO: often fails in concurrent mode */
+void serial_test_perf_link(void)
 {
 	struct test_perf_link *skel = NULL;
 	struct perf_event_attr attr;
diff --git a/tools/testing/selftests/bpf/prog_tests/probe_user.c b/tools/testing/selftests/bpf/prog_tests/probe_user.c
index 52fe157e2a90..abf890d066eb 100644
--- a/tools/testing/selftests/bpf/prog_tests/probe_user.c
+++ b/tools/testing/selftests/bpf/prog_tests/probe_user.c
@@ -1,7 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <test_progs.h>
 
-void test_probe_user(void)
+/* TODO: corrupts other tests uses connect() */
+void serial_test_probe_user(void)
 {
 	const char *prog_name = "handle_sys_connect";
 	const char *obj_file = "./test_probe_user.o";
diff --git a/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c b/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c
index 5c45424cac5f..ddefa1192e5d 100644
--- a/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c
+++ b/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c
@@ -3,7 +3,8 @@
 #include <test_progs.h>
 #include <linux/nbd.h>
 
-void test_raw_tp_writable_test_run(void)
+/* NOTE: conflict with other tests. */
+void serial_test_raw_tp_writable_test_run(void)
 {
 	__u32 duration = 0;
 	char error[4096];
diff --git a/tools/testing/selftests/bpf/prog_tests/select_reuseport.c b/tools/testing/selftests/bpf/prog_tests/select_reuseport.c
index d40e9156c48d..3cfc910ab3c1 100644
--- a/tools/testing/selftests/bpf/prog_tests/select_reuseport.c
+++ b/tools/testing/selftests/bpf/prog_tests/select_reuseport.c
@@ -858,7 +858,7 @@ out:
 	cleanup();
 }
 
-void test_select_reuseport(void)
+void serial_test_select_reuseport(void)
 {
 	saved_tcp_fo = read_int_sysctl(TCP_FO_SYSCTL);
 	if (saved_tcp_fo < 0)
diff --git a/tools/testing/selftests/bpf/prog_tests/send_signal_sched_switch.c b/tools/testing/selftests/bpf/prog_tests/send_signal_sched_switch.c
index 189a34a7addb..15dacfcfaa6d 100644
--- a/tools/testing/selftests/bpf/prog_tests/send_signal_sched_switch.c
+++ b/tools/testing/selftests/bpf/prog_tests/send_signal_sched_switch.c
@@ -25,7 +25,8 @@ static void *worker(void *p)
 	return NULL;
 }
 
-void test_send_signal_sched_switch(void)
+/* NOTE: cause events loss */
+void serial_test_send_signal_sched_switch(void)
 {
 	struct test_send_signal_kern *skel;
 	pthread_t threads[THREAD_COUNT];
diff --git a/tools/testing/selftests/bpf/prog_tests/sk_storage_tracing.c b/tools/testing/selftests/bpf/prog_tests/sk_storage_tracing.c
index 2b392590e8ca..547ae53cde74 100644
--- a/tools/testing/selftests/bpf/prog_tests/sk_storage_tracing.c
+++ b/tools/testing/selftests/bpf/prog_tests/sk_storage_tracing.c
@@ -105,7 +105,7 @@ out:
 		close(listen_fd);
 }
 
-void test_sk_storage_tracing(void)
+void serial_test_sk_storage_tracing(void)
 {
 	struct test_sk_storage_trace_itself *skel_itself;
 	int err;
diff --git a/tools/testing/selftests/bpf/prog_tests/snprintf_btf.c b/tools/testing/selftests/bpf/prog_tests/snprintf_btf.c
index 76e1f5fe18fa..dd41b826be30 100644
--- a/tools/testing/selftests/bpf/prog_tests/snprintf_btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/snprintf_btf.c
@@ -6,7 +6,7 @@
 /* Demonstrate that bpf_snprintf_btf succeeds and that various data types
  * are formatted correctly.
  */
-void test_snprintf_btf(void)
+void serial_test_snprintf_btf(void)
 {
 	struct netif_receive_skb *skel;
 	struct netif_receive_skb__bss *bss;
diff --git a/tools/testing/selftests/bpf/prog_tests/sock_fields.c b/tools/testing/selftests/bpf/prog_tests/sock_fields.c
index 577d619fb07e..fae40db4d81f 100644
--- a/tools/testing/selftests/bpf/prog_tests/sock_fields.c
+++ b/tools/testing/selftests/bpf/prog_tests/sock_fields.c
@@ -329,7 +329,7 @@ done:
 		close(listen_fd);
 }
 
-void test_sock_fields(void)
+void serial_test_sock_fields(void)
 {
 	struct bpf_link *egress_link = NULL, *ingress_link = NULL;
 	int parent_cg_fd = -1, child_cg_fd = -1;
diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
index 5c5979046523..102c73a00402 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
@@ -2037,7 +2037,7 @@ static void run_tests(struct test_sockmap_listen *skel, struct bpf_map *map,
 	test_udp_unix_redir(skel, map, family);
 }
 
-void test_sockmap_listen(void)
+void serial_test_sockmap_listen(void)
 {
 	struct test_sockmap_listen *skel;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/timer.c b/tools/testing/selftests/bpf/prog_tests/timer.c
index 25f40e1b9967..0f4e49e622cd 100644
--- a/tools/testing/selftests/bpf/prog_tests/timer.c
+++ b/tools/testing/selftests/bpf/prog_tests/timer.c
@@ -39,7 +39,8 @@ static int timer(struct timer *timer_skel)
 	return 0;
 }
 
-void test_timer(void)
+/* TODO: use pid filtering */
+void serial_test_timer(void)
 {
 	struct timer *timer_skel = NULL;
 	int err;
diff --git a/tools/testing/selftests/bpf/prog_tests/timer_mim.c b/tools/testing/selftests/bpf/prog_tests/timer_mim.c
index ced8f6cf347c..949a0617869d 100644
--- a/tools/testing/selftests/bpf/prog_tests/timer_mim.c
+++ b/tools/testing/selftests/bpf/prog_tests/timer_mim.c
@@ -52,7 +52,7 @@ static int timer_mim(struct timer_mim *timer_skel)
 	return 0;
 }
 
-void test_timer_mim(void)
+void serial_test_timer_mim(void)
 {
 	struct timer_mim_reject *timer_reject_skel = NULL;
 	libbpf_print_fn_t old_print_fn = NULL;
diff --git a/tools/testing/selftests/bpf/prog_tests/tp_attach_query.c b/tools/testing/selftests/bpf/prog_tests/tp_attach_query.c
index fb095e5cd9af..8652d0a46c87 100644
--- a/tools/testing/selftests/bpf/prog_tests/tp_attach_query.c
+++ b/tools/testing/selftests/bpf/prog_tests/tp_attach_query.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <test_progs.h>
 
-void test_tp_attach_query(void)
+void serial_test_tp_attach_query(void)
 {
 	const int num_progs = 3;
 	int i, j, bytes, efd, err, prog_fd[num_progs], pmu_fd[num_progs];
diff --git a/tools/testing/selftests/bpf/prog_tests/trace_printk.c b/tools/testing/selftests/bpf/prog_tests/trace_printk.c
index e47835f0a674..3f7a7141265e 100644
--- a/tools/testing/selftests/bpf/prog_tests/trace_printk.c
+++ b/tools/testing/selftests/bpf/prog_tests/trace_printk.c
@@ -8,7 +8,7 @@
 #define TRACEBUF	"/sys/kernel/debug/tracing/trace_pipe"
 #define SEARCHMSG	"testing,testing"
 
-void test_trace_printk(void)
+void serial_test_trace_printk(void)
 {
 	int err = 0, iter = 0, found = 0;
 	struct trace_printk__bss *bss;
diff --git a/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c b/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
index 61a24e62e1a0..46101270cb1a 100644
--- a/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
+++ b/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
@@ -8,7 +8,7 @@
 #define TRACEBUF	"/sys/kernel/debug/tracing/trace_pipe"
 #define SEARCHMSG	"1,2,3,4,5,6,7,8,9,10"
 
-void test_trace_vprintk(void)
+void serial_test_trace_vprintk(void)
 {
 	int err = 0, iter = 0, found = 0;
 	struct trace_vprintk__bss *bss;
diff --git a/tools/testing/selftests/bpf/prog_tests/trampoline_count.c b/tools/testing/selftests/bpf/prog_tests/trampoline_count.c
index d7f5a931d7f3..fc146671b20a 100644
--- a/tools/testing/selftests/bpf/prog_tests/trampoline_count.c
+++ b/tools/testing/selftests/bpf/prog_tests/trampoline_count.c
@@ -41,7 +41,8 @@ static struct bpf_link *load(struct bpf_object *obj, const char *name)
 	return bpf_program__attach_trace(prog);
 }
 
-void test_trampoline_count(void)
+/* TODO: use different target function to run in concurrent mode */
+void serial_test_trampoline_count(void)
 {
 	const char *fentry_name = "fentry/__set_task_comm";
 	const char *fexit_name = "fexit/__set_task_comm";
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_attach.c
index 15ef3531483e..4c4057262cd8 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_attach.c
@@ -4,7 +4,7 @@
 #define IFINDEX_LO 1
 #define XDP_FLAGS_REPLACE		(1U << 4)
 
-void test_xdp_attach(void)
+void serial_test_xdp_attach(void)
 {
 	__u32 duration = 0, id1, id2, id0 = 0, len;
 	struct bpf_object *obj1, *obj2, *obj3;
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_bonding.c b/tools/testing/selftests/bpf/prog_tests/xdp_bonding.c
index ad3ba81b4048..faa22b84f2ee 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_bonding.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_bonding.c
@@ -519,7 +519,7 @@ static struct bond_test_case bond_test_cases[] = {
 	{ "xdp_bonding_xor_layer34", BOND_MODE_XOR, BOND_XMIT_POLICY_LAYER34, },
 };
 
-void test_xdp_bonding(void)
+void serial_test_xdp_bonding(void)
 {
 	libbpf_print_fn_t old_print_fn;
 	struct skeletons skeletons = {};
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
index 8755effd80b0..fd812bd43600 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
@@ -7,7 +7,7 @@
 
 #define IFINDEX_LO	1
 
-void test_xdp_cpumap_attach(void)
+void serial_test_xdp_cpumap_attach(void)
 {
 	struct test_xdp_with_cpumap_helpers *skel;
 	struct bpf_prog_info info = {};
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
index c72af030ff10..d4e9a9972a67 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
@@ -72,7 +72,7 @@ void test_neg_xdp_devmap_helpers(void)
 }
 
 
-void test_xdp_devmap_attach(void)
+void serial_test_xdp_devmap_attach(void)
 {
 	if (test__start_subtest("DEVMAP with programs in entries"))
 		test_xdp_with_devmap_helpers();
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_info.c b/tools/testing/selftests/bpf/prog_tests/xdp_info.c
index d2d7a283d72f..4e2a4fd56f67 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_info.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_info.c
@@ -4,7 +4,7 @@
 
 #define IFINDEX_LO 1
 
-void test_xdp_info(void)
+void serial_test_xdp_info(void)
 {
 	__u32 len = sizeof(struct bpf_prog_info), duration = 0, prog_id;
 	const char *file = "./xdp_dummy.o";
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_link.c b/tools/testing/selftests/bpf/prog_tests/xdp_link.c
index 46eed0a33c23..983ab0b47d30 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_link.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_link.c
@@ -6,7 +6,7 @@
 
 #define IFINDEX_LO 1
 
-void test_xdp_link(void)
+void serial_test_xdp_link(void)
 {
 	__u32 duration = 0, id1, id2, id0 = 0, prog_fd1, prog_fd2, err;
 	DECLARE_LIBBPF_OPTS(bpf_xdp_set_link_opts, opts, .old_fd = -1);
-- 
cgit v1.2.3


From e506342a03c777a8d56389ff2764617648562bcf Mon Sep 17 00:00:00 2001
From: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Date: Fri, 8 Oct 2021 17:17:45 +0800
Subject: selftests/tls: add SM4 GCM/CCM to tls selftests

Add new cipher as a variant of standard tls selftests.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20211008091745.42917-1-tianjia.zhang@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 tools/testing/selftests/net/tls.c | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/tls.c b/tools/testing/selftests/net/tls.c
index 97fceb9be9ed..d3047e251fe9 100644
--- a/tools/testing/selftests/net/tls.c
+++ b/tools/testing/selftests/net/tls.c
@@ -29,6 +29,8 @@ struct tls_crypto_info_keys {
 	union {
 		struct tls12_crypto_info_aes_gcm_128 aes128;
 		struct tls12_crypto_info_chacha20_poly1305 chacha20;
+		struct tls12_crypto_info_sm4_gcm sm4gcm;
+		struct tls12_crypto_info_sm4_ccm sm4ccm;
 	};
 	size_t len;
 };
@@ -49,6 +51,16 @@ static void tls_crypto_info_init(uint16_t tls_version, uint16_t cipher_type,
 		tls12->aes128.info.version = tls_version;
 		tls12->aes128.info.cipher_type = cipher_type;
 		break;
+	case TLS_CIPHER_SM4_GCM:
+		tls12->len = sizeof(struct tls12_crypto_info_sm4_gcm);
+		tls12->sm4gcm.info.version = tls_version;
+		tls12->sm4gcm.info.cipher_type = cipher_type;
+		break;
+	case TLS_CIPHER_SM4_CCM:
+		tls12->len = sizeof(struct tls12_crypto_info_sm4_ccm);
+		tls12->sm4ccm.info.version = tls_version;
+		tls12->sm4ccm.info.cipher_type = cipher_type;
+		break;
 	default:
 		break;
 	}
@@ -148,13 +160,13 @@ FIXTURE_VARIANT(tls)
 	uint16_t cipher_type;
 };
 
-FIXTURE_VARIANT_ADD(tls, 12_gcm)
+FIXTURE_VARIANT_ADD(tls, 12_aes_gcm)
 {
 	.tls_version = TLS_1_2_VERSION,
 	.cipher_type = TLS_CIPHER_AES_GCM_128,
 };
 
-FIXTURE_VARIANT_ADD(tls, 13_gcm)
+FIXTURE_VARIANT_ADD(tls, 13_aes_gcm)
 {
 	.tls_version = TLS_1_3_VERSION,
 	.cipher_type = TLS_CIPHER_AES_GCM_128,
@@ -172,6 +184,18 @@ FIXTURE_VARIANT_ADD(tls, 13_chacha)
 	.cipher_type = TLS_CIPHER_CHACHA20_POLY1305,
 };
 
+FIXTURE_VARIANT_ADD(tls, 13_sm4_gcm)
+{
+	.tls_version = TLS_1_3_VERSION,
+	.cipher_type = TLS_CIPHER_SM4_GCM,
+};
+
+FIXTURE_VARIANT_ADD(tls, 13_sm4_ccm)
+{
+	.tls_version = TLS_1_3_VERSION,
+	.cipher_type = TLS_CIPHER_SM4_CCM,
+};
+
 FIXTURE_SETUP(tls)
 {
 	struct tls_crypto_info_keys tls12;
-- 
cgit v1.2.3


From 5319255b8df9271474bc9027cabf82253934f28d Mon Sep 17 00:00:00 2001
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: Thu, 7 Oct 2021 19:33:28 +0200
Subject: selftests/bpf: Skip verifier tests that fail to load with ENOTSUPP

The verifier tests added in commit c48e51c8b07a ("bpf: selftests: Add
selftests for module kfunc support") fail on s390, since the JIT does
not support calling kernel functions. This is most likely an issue for
all the other non-Intel arches, as well as on Intel with
!CONFIG_DEBUG_INFO_BTF or !CONFIG_BPF_JIT.

Trying to check for messages from all the possible add_kfunc_call()
failure cases in test_verifier looks pointless, so do a much simpler
thing instead: just like it's already done in do_prog_test_run(), skip
the tests that fail to load with ENOTSUPP.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211007173329.381754-1-iii@linux.ibm.com
---
 tools/testing/selftests/bpf/test_verifier.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index 3a9e332c5e36..25afe423b3f0 100644
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -47,6 +47,10 @@
 #include "test_btf.h"
 #include "../../../include/linux/filter.h"
 
+#ifndef ENOTSUPP
+#define ENOTSUPP 524
+#endif
+
 #define MAX_INSNS	BPF_MAXINSNS
 #define MAX_TEST_INSNS	1000000
 #define MAX_FIXUPS	8
@@ -974,7 +978,7 @@ static int do_prog_test_run(int fd_prog, bool unpriv, uint32_t expected_val,
 
 	if (err) {
 		switch (saved_errno) {
-		case 524/*ENOTSUPP*/:
+		case ENOTSUPP:
 			printf("Did not run the program (not supported) ");
 			return 0;
 		case EPERM:
@@ -1119,6 +1123,12 @@ static void do_test_single(struct bpf_test *test, bool unpriv,
 		goto close_fds;
 	}
 
+	if (fd_prog < 0 && saved_errno == ENOTSUPP) {
+		printf("SKIP (program uses an unsupported feature)\n");
+		skips++;
+		goto close_fds;
+	}
+
 	alignment_prevented_execution = 0;
 
 	if (expected_ret == ACCEPT || expected_ret == VERBOSE_ACCEPT) {
-- 
cgit v1.2.3


From a703b5179b5c0740c69358b2cfb22c12545d13a4 Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@nvidia.com>
Date: Sun, 10 Oct 2021 14:40:17 +0300
Subject: selftests: mlxsw: sch_red_core: Drop two unused variables

These variables are cut'n'pasted from other functions in the file and not
actually used.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh | 2 --
 1 file changed, 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
index 33ddd01689be..88053f8dfd12 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
@@ -551,10 +551,8 @@ do_drop_test()
 	local trigger=$1; shift
 	local subtest=$1; shift
 	local fetch_counter=$1; shift
-	local backlog
 	local base
 	local now
-	local pct
 
 	RET=0
 
-- 
cgit v1.2.3


From 0cd6fa99a076b79744d26bb2f4d089e1c4eae2e4 Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@nvidia.com>
Date: Sun, 10 Oct 2021 14:40:18 +0300
Subject: selftests: mlxsw: RED: Add selftests for the mark qevent

Add do_mark_test(), which is to do_ecn_test() like do_drop_test() is to
do_red_test(): meant to test that actions on the RED mark qevent block are
offloaded, and executed on ECN-marked packets.

The test splits install_qdisc() into its constituents, install_root_qdisc()
and install_qdisc_tcX(). This is in order to test that when mirroring is
enabled on one TC, the other TC does not mirror.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../selftests/drivers/net/mlxsw/sch_red_core.sh    | 74 ++++++++++++++++++++++
 .../selftests/drivers/net/mlxsw/sch_red_ets.sh     | 53 ++++++++++++++--
 2 files changed, 122 insertions(+), 5 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
index 88053f8dfd12..eea3e5ad3f38 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
@@ -544,6 +544,53 @@ do_mc_backlog_test()
 	log_test "TC $((vlan - 10)): Qdisc reports MC backlog"
 }
 
+do_mark_test()
+{
+	local vlan=$1; shift
+	local limit=$1; shift
+	local subtest=$1; shift
+	local fetch_counter=$1; shift
+	local should_fail=$1; shift
+	local base
+
+	RET=0
+
+	start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \
+			  $h3_mac tos=0x01
+
+	# Create a bit of a backlog and observe no mirroring due to marks.
+	qevent_rule_install_$subtest
+
+	build_backlog $vlan $((2 * limit / 3)) tcp tos=0x01 >/dev/null
+
+	base=$($fetch_counter)
+	count=$(busywait 1100 until_counter_is ">= $((base + 1))" \
+		$fetch_counter)
+	check_fail $? "Spurious packets ($base -> $count) observed without buffer pressure"
+
+	# Above limit, everything should be mirrored, we should see lots of
+	# packets.
+	build_backlog $vlan $((3 * limit / 2)) tcp tos=0x01 >/dev/null
+	busywait_for_counter 1100 +10000 \
+		 $fetch_counter > /dev/null
+	check_err_fail "$should_fail" $? "ECN-marked packets $subtest'd"
+
+	# When the rule is uninstalled, there should be no mirroring.
+	qevent_rule_uninstall_$subtest
+	busywait_for_counter 1100 +10 \
+		 $fetch_counter > /dev/null
+	check_fail $? "Spurious packets observed after uninstall"
+
+	if ((should_fail)); then
+		log_test "TC $((vlan - 10)): marked packets not $subtest'd"
+	else
+		log_test "TC $((vlan - 10)): marked packets $subtest'd"
+	fi
+
+	stop_traffic
+	sleep 1
+}
+
 do_drop_test()
 {
 	local vlan=$1; shift
@@ -626,6 +673,22 @@ do_drop_mirror_test()
 	tc filter del dev $h2 ingress pref 1 handle 101 flower
 }
 
+do_mark_mirror_test()
+{
+	local vlan=$1; shift
+	local limit=$1; shift
+
+	tc filter add dev $h2 ingress pref 1 handle 101 prot ip \
+	   flower skip_sw ip_proto tcp \
+	   action drop
+
+	do_mark_test "$vlan" "$limit" mirror \
+		     qevent_counter_fetch_mirror \
+		     $(: should_fail=)0
+
+	tc filter del dev $h2 ingress pref 1 handle 101 flower
+}
+
 qevent_rule_install_trap()
 {
 	tc filter add block 10 pref 1234 handle 102 matchall skip_sw \
@@ -653,3 +716,14 @@ do_drop_trap_test()
 	do_drop_test "$vlan" "$limit" "$trap_name" trap \
 		     "qevent_counter_fetch_trap $trap_name"
 }
+
+qevent_rule_install_trap_fwd()
+{
+	tc filter add block 10 pref 1234 handle 102 matchall skip_sw \
+	   action trap_fwd hw_stats disabled
+}
+
+qevent_rule_uninstall_trap_fwd()
+{
+	tc filter del block 10 pref 1234 handle 102 matchall
+}
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
index f3ef3274f9b3..b58b4cf9dc13 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
@@ -9,6 +9,7 @@ ALL_TESTS="
 	mc_backlog_test
 	red_mirror_test
 	red_trap_test
+	ecn_mirror_test
 "
 : ${QDISC:=ets}
 source sch_red_core.sh
@@ -21,28 +22,60 @@ source sch_red_core.sh
 BACKLOG1=200000
 BACKLOG2=500000
 
-install_qdisc()
+install_root_qdisc()
 {
-	local -a args=("$@")
-
 	tc qdisc add dev $swp3 root handle 10: $QDISC \
 	   bands 8 priomap 7 6 5 4 3 2 1 0
+}
+
+install_qdisc_tc0()
+{
+	local -a args=("$@")
+
 	tc qdisc add dev $swp3 parent 10:8 handle 108: red \
 	   limit 1000000 min $BACKLOG1 max $((BACKLOG1 + 1)) \
 	   probability 1.0 avpkt 8000 burst 38 "${args[@]}"
+}
+
+install_qdisc_tc1()
+{
+	local -a args=("$@")
+
 	tc qdisc add dev $swp3 parent 10:7 handle 107: red \
 	   limit 1000000 min $BACKLOG2 max $((BACKLOG2 + 1)) \
 	   probability 1.0 avpkt 8000 burst 63 "${args[@]}"
+}
+
+install_qdisc()
+{
+	install_root_qdisc
+	install_qdisc_tc0 "$@"
+	install_qdisc_tc1 "$@"
 	sleep 1
 }
 
-uninstall_qdisc()
+uninstall_qdisc_tc0()
 {
-	tc qdisc del dev $swp3 parent 10:7
 	tc qdisc del dev $swp3 parent 10:8
+}
+
+uninstall_qdisc_tc1()
+{
+	tc qdisc del dev $swp3 parent 10:7
+}
+
+uninstall_root_qdisc()
+{
 	tc qdisc del dev $swp3 root
 }
 
+uninstall_qdisc()
+{
+	uninstall_qdisc_tc0
+	uninstall_qdisc_tc1
+	uninstall_root_qdisc
+}
+
 ecn_test()
 {
 	install_qdisc ecn
@@ -112,6 +145,16 @@ red_trap_test()
 	uninstall_qdisc
 }
 
+ecn_mirror_test()
+{
+	install_qdisc ecn qevent mark block 10
+
+	do_mark_mirror_test 10 $BACKLOG1
+	do_mark_mirror_test 11 $BACKLOG2
+
+	uninstall_qdisc
+}
+
 trap cleanup EXIT
 
 setup_prepare
-- 
cgit v1.2.3


From bf862732945cbfebc8616ef6ca60a879f1445fe1 Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@nvidia.com>
Date: Wed, 13 Oct 2021 13:37:48 +0300
Subject: selftests: mlxsw: RED: Test per-TC ECN counters

Add a variant of ECN test that uses qdisc marked counter (supported on
Spectrum-3 and above) instead of the aggregate ethtool ecn_marked counter.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 .../selftests/drivers/net/mlxsw/sch_red_core.sh    | 51 +++++++++++++++++-----
 .../selftests/drivers/net/mlxsw/sch_red_ets.sh     | 11 +++++
 .../selftests/drivers/net/mlxsw/sch_red_root.sh    |  8 ++++
 3 files changed, 60 insertions(+), 10 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
index eea3e5ad3f38..dd90cd87d4f9 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
@@ -331,6 +331,14 @@ get_nmarked()
 	ethtool_stats_get $swp3 ecn_marked
 }
 
+get_qdisc_nmarked()
+{
+	local vlan=$1; shift
+
+	busywait_for_counter 1100 +1 \
+		qdisc_stats_get $swp3 $(get_qdisc_handle $vlan) .marked
+}
+
 get_qdisc_npackets()
 {
 	local vlan=$1; shift
@@ -384,14 +392,15 @@ build_backlog()
 
 check_marking()
 {
+	local get_nmarked=$1; shift
 	local vlan=$1; shift
 	local cond=$1; shift
 
 	local npackets_0=$(get_qdisc_npackets $vlan)
-	local nmarked_0=$(get_nmarked $vlan)
+	local nmarked_0=$($get_nmarked $vlan)
 	sleep 5
 	local npackets_1=$(get_qdisc_npackets $vlan)
-	local nmarked_1=$(get_nmarked $vlan)
+	local nmarked_1=$($get_nmarked $vlan)
 
 	local nmarked_d=$((nmarked_1 - nmarked_0))
 	local npackets_d=$((npackets_1 - npackets_0))
@@ -404,6 +413,7 @@ check_marking()
 ecn_test_common()
 {
 	local name=$1; shift
+	local get_nmarked=$1; shift
 	local vlan=$1; shift
 	local limit=$1; shift
 	local backlog
@@ -416,7 +426,7 @@ ecn_test_common()
 	RET=0
 	backlog=$(build_backlog $vlan $((2 * limit / 3)) udp)
 	check_err $? "Could not build the requested backlog"
-	pct=$(check_marking $vlan "== 0")
+	pct=$(check_marking "$get_nmarked" $vlan "== 0")
 	check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."
 	log_test "TC $((vlan - 10)): $name backlog < limit"
 
@@ -426,22 +436,23 @@ ecn_test_common()
 	RET=0
 	backlog=$(build_backlog $vlan $((3 * limit / 2)) tcp tos=0x01)
 	check_err $? "Could not build the requested backlog"
-	pct=$(check_marking $vlan ">= 95")
+	pct=$(check_marking "$get_nmarked" $vlan ">= 95")
 	check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected >= 95."
 	log_test "TC $((vlan - 10)): $name backlog > limit"
 }
 
-do_ecn_test()
+__do_ecn_test()
 {
+	local get_nmarked=$1; shift
 	local vlan=$1; shift
 	local limit=$1; shift
-	local name=ECN
+	local name=${1-ECN}; shift
 
 	start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \
 			  $h3_mac tos=0x01
 	sleep 1
 
-	ecn_test_common "$name" $vlan $limit
+	ecn_test_common "$name" "$get_nmarked" $vlan $limit
 
 	# Up there we saw that UDP gets accepted when backlog is below the
 	# limit. Now that it is above, it should all get dropped, and backlog
@@ -455,6 +466,26 @@ do_ecn_test()
 	sleep 1
 }
 
+do_ecn_test()
+{
+	local vlan=$1; shift
+	local limit=$1; shift
+
+	__do_ecn_test get_nmarked "$vlan" "$limit"
+}
+
+do_ecn_test_perband()
+{
+	local vlan=$1; shift
+	local limit=$1; shift
+
+	# Per-band ECN counters are not supported on Spectrum-1 and Spectrum-2.
+	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ||
+	   "$DEVLINK_VIDDID" == "15b3:cf6c" ]] && return
+
+	__do_ecn_test get_qdisc_nmarked "$vlan" "$limit" "per-band ECN"
+}
+
 do_ecn_nodrop_test()
 {
 	local vlan=$1; shift
@@ -465,7 +496,7 @@ do_ecn_nodrop_test()
 			  $h3_mac tos=0x01
 	sleep 1
 
-	ecn_test_common "$name" $vlan $limit
+	ecn_test_common "$name" get_nmarked $vlan $limit
 
 	# Up there we saw that UDP gets accepted when backlog is below the
 	# limit. Now that it is above, in nodrop mode, make sure it goes to
@@ -495,7 +526,7 @@ do_red_test()
 	RET=0
 	backlog=$(build_backlog $vlan $((2 * limit / 3)) tcp tos=0x01)
 	check_err $? "Could not build the requested backlog"
-	pct=$(check_marking $vlan "== 0")
+	pct=$(check_marking get_nmarked $vlan "== 0")
 	check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."
 	log_test "TC $((vlan - 10)): RED backlog < limit"
 
@@ -503,7 +534,7 @@ do_red_test()
 	RET=0
 	backlog=$(build_backlog $vlan $((3 * limit / 2)) tcp tos=0x01)
 	check_fail $? "Traffic went into backlog instead of being early-dropped"
-	pct=$(check_marking $vlan "== 0")
+	pct=$(check_marking get_nmarked $vlan "== 0")
 	check_err $? "backlog $backlog / $limit Got $pct% marked packets, expected == 0."
 	local diff=$((limit - backlog))
 	pct=$((100 * diff / limit))
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
index b58b4cf9dc13..1e5ad3209436 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_ets.sh
@@ -4,6 +4,7 @@
 ALL_TESTS="
 	ping_ipv4
 	ecn_test
+	ecn_test_perband
 	ecn_nodrop_test
 	red_test
 	mc_backlog_test
@@ -86,6 +87,16 @@ ecn_test()
 	uninstall_qdisc
 }
 
+ecn_test_perband()
+{
+	install_qdisc ecn
+
+	do_ecn_test_perband 10 $BACKLOG1
+	do_ecn_test_perband 11 $BACKLOG2
+
+	uninstall_qdisc
+}
+
 ecn_nodrop_test()
 {
 	install_qdisc ecn nodrop
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh
index ede9c38d3eff..d79a82f317d2 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_root.sh
@@ -4,6 +4,7 @@
 ALL_TESTS="
 	ping_ipv4
 	ecn_test
+	ecn_test_perband
 	ecn_nodrop_test
 	red_test
 	mc_backlog_test
@@ -35,6 +36,13 @@ ecn_test()
 	uninstall_qdisc
 }
 
+ecn_test_perband()
+{
+	install_qdisc ecn
+	do_ecn_test_perband 10 $BACKLOG
+	uninstall_qdisc
+}
+
 ecn_nodrop_test()
 {
 	install_qdisc ecn nodrop
-- 
cgit v1.2.3


From 72bcbc46a5c385961b9c167db79ad1f38f04e6a7 Mon Sep 17 00:00:00 2001
From: Paolo Abeni <pabeni@redhat.com>
Date: Fri, 15 Oct 2021 16:05:51 -0700
Subject: mptcp: increase default max additional subflows to 2

The current default does not allowing additional subflows, mostly
as a safety restriction to avoid uncontrolled resource consumption
on busy servers.

Still the system admin and/or the application have to opt-in to
MPTCP explicitly. After that, they need to change (increase) the
default maximum number of additional subflows.

Let set that to reasonable default, and make end-users life easier.

Additionally we need to update some self-tests accordingly.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/mptcp/pm_netlink.c                          | 3 +++
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 5 ++++-
 tools/testing/selftests/net/mptcp/pm_netlink.sh | 6 +++---
 3 files changed, 10 insertions(+), 4 deletions(-)

(limited to 'tools/testing')

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 050eea231528..f7d33a9abd57 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -2052,6 +2052,9 @@ static int __net_init pm_nl_init_net(struct net *net)
 	struct pm_nl_pernet *pernet = net_generic(net, pm_nl_pernet_id);
 
 	INIT_LIST_HEAD_RCU(&pernet->local_addr_list);
+
+	/* Cit. 2 subflows ought to be enough for anybody. */
+	pernet->subflows_max = 2;
 	pernet->next_id = 1;
 	pernet->stale_loss_cnt = 4;
 	spin_lock_init(&pernet->lock);
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 255793c5ac4f..293d349e21fe 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -945,12 +945,15 @@ subflows_tests()
 
 	# subflow limited by client
 	reset
+	ip netns exec $ns1 ./pm_nl_ctl limits 0 0
+	ip netns exec $ns2 ./pm_nl_ctl limits 0 0
 	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
 	run_tests $ns1 $ns2 10.0.1.1
 	chk_join_nr "single subflow, limited by client" 0 0 0
 
 	# subflow limited by server
 	reset
+	ip netns exec $ns1 ./pm_nl_ctl limits 0 0
 	ip netns exec $ns2 ./pm_nl_ctl limits 0 1
 	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
 	run_tests $ns1 $ns2 10.0.1.1
@@ -973,7 +976,7 @@ subflows_tests()
 	run_tests $ns1 $ns2 10.0.1.1
 	chk_join_nr "multiple subflows" 2 2 2
 
-	# multiple subflows limited by serverf
+	# multiple subflows limited by server
 	reset
 	ip netns exec $ns1 ./pm_nl_ctl limits 0 1
 	ip netns exec $ns2 ./pm_nl_ctl limits 0 2
diff --git a/tools/testing/selftests/net/mptcp/pm_netlink.sh b/tools/testing/selftests/net/mptcp/pm_netlink.sh
index 3c741abe034e..cbacf9f6538b 100755
--- a/tools/testing/selftests/net/mptcp/pm_netlink.sh
+++ b/tools/testing/selftests/net/mptcp/pm_netlink.sh
@@ -70,7 +70,7 @@ check()
 
 check "ip netns exec $ns1 ./pm_nl_ctl dump" "" "defaults addr list"
 check "ip netns exec $ns1 ./pm_nl_ctl limits" "accept 0
-subflows 0" "defaults limits"
+subflows 2" "defaults limits"
 
 ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.1
 ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.2 flags subflow dev lo
@@ -118,11 +118,11 @@ check "ip netns exec $ns1 ./pm_nl_ctl dump" "" "flush addrs"
 
 ip netns exec $ns1 ./pm_nl_ctl limits 9 1
 check "ip netns exec $ns1 ./pm_nl_ctl limits" "accept 0
-subflows 0" "rcv addrs above hard limit"
+subflows 2" "rcv addrs above hard limit"
 
 ip netns exec $ns1 ./pm_nl_ctl limits 1 9
 check "ip netns exec $ns1 ./pm_nl_ctl limits" "accept 0
-subflows 0" "subflows above hard limit"
+subflows 2" "subflows above hard limit"
 
 ip netns exec $ns1 ./pm_nl_ctl limits 8 8
 check "ip netns exec $ns1 ./pm_nl_ctl limits" "accept 8
-- 
cgit v1.2.3


From 223f903e9c832699f4e5f422281a60756c1c6cfe Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Tue, 12 Oct 2021 09:48:38 -0700
Subject: bpf: Rename BTF_KIND_TAG to BTF_KIND_DECL_TAG

Patch set [1] introduced BTF_KIND_TAG to allow tagging
declarations for struct/union, struct/union field, var, func
and func arguments and these tags will be encoded into
dwarf. They are also encoded to btf by llvm for the bpf target.

After BTF_KIND_TAG is introduced, we intended to use it
for kernel __user attributes. But kernel __user is actually
a type attribute. Upstream and internal discussion showed
it is not a good idea to mix declaration attribute and
type attribute. So we proposed to introduce btf_type_tag
as a type attribute and existing btf_tag renamed to
btf_decl_tag ([2]).

This patch renamed BTF_KIND_TAG to BTF_KIND_DECL_TAG and some
other declarations with *_tag to *_decl_tag to make it clear
the tag is for declaration. In the future, BTF_KIND_TYPE_TAG
might be introduced per [3].

 [1] https://lore.kernel.org/bpf/20210914223004.244411-1-yhs@fb.com/
 [2] https://reviews.llvm.org/D111588
 [3] https://reviews.llvm.org/D111199

Fixes: b5ea834dde6b ("bpf: Support for new btf kind BTF_KIND_TAG")
Fixes: 5b84bd10363e ("libbpf: Add support for BTF_KIND_TAG")
Fixes: 5c07f2fec003 ("bpftool: Add support for BTF_KIND_TAG")
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211012164838.3345699-1-yhs@fb.com
---
 Documentation/bpf/btf.rst                          |  24 ++--
 include/uapi/linux/btf.h                           |   8 +-
 kernel/bpf/btf.c                                   |  44 +++---
 tools/bpf/bpftool/btf.c                            |   6 +-
 tools/include/uapi/linux/btf.h                     |   8 +-
 tools/lib/bpf/btf.c                                |  36 ++---
 tools/lib/bpf/btf.h                                |  12 +-
 tools/lib/bpf/btf_dump.c                           |   6 +-
 tools/lib/bpf/libbpf.c                             |  24 ++--
 tools/lib/bpf/libbpf.map                           |   2 +-
 tools/lib/bpf/libbpf_internal.h                    |   4 +-
 tools/testing/selftests/bpf/README.rst             |   4 +-
 tools/testing/selftests/bpf/btf_helpers.c          |   8 +-
 tools/testing/selftests/bpf/prog_tests/btf.c       | 160 ++++++++++-----------
 tools/testing/selftests/bpf/prog_tests/btf_write.c |  30 ++--
 tools/testing/selftests/bpf/progs/tag.c            |   6 +-
 tools/testing/selftests/bpf/test_btf.h             |   4 +-
 17 files changed, 193 insertions(+), 193 deletions(-)

(limited to 'tools/testing')

diff --git a/Documentation/bpf/btf.rst b/Documentation/bpf/btf.rst
index 1bfe4072f5fc..9e5b4a98af76 100644
--- a/Documentation/bpf/btf.rst
+++ b/Documentation/bpf/btf.rst
@@ -85,7 +85,7 @@ sequentially and type id is assigned to each recognized type starting from id
     #define BTF_KIND_VAR            14      /* Variable     */
     #define BTF_KIND_DATASEC        15      /* Section      */
     #define BTF_KIND_FLOAT          16      /* Floating point       */
-    #define BTF_KIND_TAG            17      /* Tag          */
+    #define BTF_KIND_DECL_TAG       17      /* Decl Tag     */
 
 Note that the type section encodes debug info, not just pure types.
 ``BTF_KIND_FUNC`` is not a type, and it represents a defined subprogram.
@@ -107,7 +107,7 @@ Each type contains the following common data::
          * "size" tells the size of the type it is describing.
          *
          * "type" is used by PTR, TYPEDEF, VOLATILE, CONST, RESTRICT,
-         * FUNC, FUNC_PROTO and TAG.
+         * FUNC, FUNC_PROTO and DECL_TAG.
          * "type" is a type_id referring to another type.
          */
         union {
@@ -466,30 +466,30 @@ map definition.
 
 No additional type data follow ``btf_type``.
 
-2.2.17 BTF_KIND_TAG
-~~~~~~~~~~~~~~~~~~~
+2.2.17 BTF_KIND_DECL_TAG
+~~~~~~~~~~~~~~~~~~~~~~~~
 
 ``struct btf_type`` encoding requirement:
  * ``name_off``: offset to a non-empty string
  * ``info.kind_flag``: 0
- * ``info.kind``: BTF_KIND_TAG
+ * ``info.kind``: BTF_KIND_DECL_TAG
  * ``info.vlen``: 0
  * ``type``: ``struct``, ``union``, ``func`` or ``var``
 
-``btf_type`` is followed by ``struct btf_tag``.::
+``btf_type`` is followed by ``struct btf_decl_tag``.::
 
-    struct btf_tag {
+    struct btf_decl_tag {
         __u32   component_idx;
     };
 
-The ``name_off`` encodes btf_tag attribute string.
+The ``name_off`` encodes btf_decl_tag attribute string.
 The ``type`` should be ``struct``, ``union``, ``func`` or ``var``.
-For ``var`` type, ``btf_tag.component_idx`` must be ``-1``.
-For the other three types, if the btf_tag attribute is
+For ``var`` type, ``btf_decl_tag.component_idx`` must be ``-1``.
+For the other three types, if the btf_decl_tag attribute is
 applied to the ``struct``, ``union`` or ``func`` itself,
-``btf_tag.component_idx`` must be ``-1``. Otherwise,
+``btf_decl_tag.component_idx`` must be ``-1``. Otherwise,
 the attribute is applied to a ``struct``/``union`` member or
-a ``func`` argument, and ``btf_tag.component_idx`` should be a
+a ``func`` argument, and ``btf_decl_tag.component_idx`` should be a
 valid index (starting from 0) pointing to a member or an argument.
 
 3. BTF Kernel API
diff --git a/include/uapi/linux/btf.h b/include/uapi/linux/btf.h
index 642b6ecb37d7..deb12f755f0f 100644
--- a/include/uapi/linux/btf.h
+++ b/include/uapi/linux/btf.h
@@ -43,7 +43,7 @@ struct btf_type {
 	 * "size" tells the size of the type it is describing.
 	 *
 	 * "type" is used by PTR, TYPEDEF, VOLATILE, CONST, RESTRICT,
-	 * FUNC, FUNC_PROTO, VAR and TAG.
+	 * FUNC, FUNC_PROTO, VAR and DECL_TAG.
 	 * "type" is a type_id referring to another type.
 	 */
 	union {
@@ -74,7 +74,7 @@ enum {
 	BTF_KIND_VAR		= 14,	/* Variable	*/
 	BTF_KIND_DATASEC	= 15,	/* Section	*/
 	BTF_KIND_FLOAT		= 16,	/* Floating point	*/
-	BTF_KIND_TAG		= 17,	/* Tag */
+	BTF_KIND_DECL_TAG	= 17,	/* Decl Tag */
 
 	NR_BTF_KINDS,
 	BTF_KIND_MAX		= NR_BTF_KINDS - 1,
@@ -174,14 +174,14 @@ struct btf_var_secinfo {
 	__u32	size;
 };
 
-/* BTF_KIND_TAG is followed by a single "struct btf_tag" to describe
+/* BTF_KIND_DECL_TAG is followed by a single "struct btf_decl_tag" to describe
  * additional information related to the tag applied location.
  * If component_idx == -1, the tag is applied to a struct, union,
  * variable or function. Otherwise, it is applied to a struct/union
  * member or a func argument, and component_idx indicates which member
  * or argument (0 ... vlen-1).
  */
-struct btf_tag {
+struct btf_decl_tag {
        __s32   component_idx;
 };
 
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 2ebffb9f57eb..9059053088b9 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -281,7 +281,7 @@ static const char * const btf_kind_str[NR_BTF_KINDS] = {
 	[BTF_KIND_VAR]		= "VAR",
 	[BTF_KIND_DATASEC]	= "DATASEC",
 	[BTF_KIND_FLOAT]	= "FLOAT",
-	[BTF_KIND_TAG]		= "TAG",
+	[BTF_KIND_DECL_TAG]	= "DECL_TAG",
 };
 
 const char *btf_type_str(const struct btf_type *t)
@@ -460,12 +460,12 @@ static bool btf_type_is_datasec(const struct btf_type *t)
 	return BTF_INFO_KIND(t->info) == BTF_KIND_DATASEC;
 }
 
-static bool btf_type_is_tag(const struct btf_type *t)
+static bool btf_type_is_decl_tag(const struct btf_type *t)
 {
-	return BTF_INFO_KIND(t->info) == BTF_KIND_TAG;
+	return BTF_INFO_KIND(t->info) == BTF_KIND_DECL_TAG;
 }
 
-static bool btf_type_is_tag_target(const struct btf_type *t)
+static bool btf_type_is_decl_tag_target(const struct btf_type *t)
 {
 	return btf_type_is_func(t) || btf_type_is_struct(t) ||
 	       btf_type_is_var(t);
@@ -549,7 +549,7 @@ const struct btf_type *btf_type_resolve_func_ptr(const struct btf *btf,
 static bool btf_type_is_resolve_source_only(const struct btf_type *t)
 {
 	return btf_type_is_var(t) ||
-	       btf_type_is_tag(t) ||
+	       btf_type_is_decl_tag(t) ||
 	       btf_type_is_datasec(t);
 }
 
@@ -576,7 +576,7 @@ static bool btf_type_needs_resolve(const struct btf_type *t)
 	       btf_type_is_struct(t) ||
 	       btf_type_is_array(t) ||
 	       btf_type_is_var(t) ||
-	       btf_type_is_tag(t) ||
+	       btf_type_is_decl_tag(t) ||
 	       btf_type_is_datasec(t);
 }
 
@@ -630,9 +630,9 @@ static const struct btf_var *btf_type_var(const struct btf_type *t)
 	return (const struct btf_var *)(t + 1);
 }
 
-static const struct btf_tag *btf_type_tag(const struct btf_type *t)
+static const struct btf_decl_tag *btf_type_decl_tag(const struct btf_type *t)
 {
-	return (const struct btf_tag *)(t + 1);
+	return (const struct btf_decl_tag *)(t + 1);
 }
 
 static const struct btf_kind_operations *btf_type_ops(const struct btf_type *t)
@@ -3820,11 +3820,11 @@ static const struct btf_kind_operations float_ops = {
 	.show = btf_df_show,
 };
 
-static s32 btf_tag_check_meta(struct btf_verifier_env *env,
+static s32 btf_decl_tag_check_meta(struct btf_verifier_env *env,
 			      const struct btf_type *t,
 			      u32 meta_left)
 {
-	const struct btf_tag *tag;
+	const struct btf_decl_tag *tag;
 	u32 meta_needed = sizeof(*tag);
 	s32 component_idx;
 	const char *value;
@@ -3852,7 +3852,7 @@ static s32 btf_tag_check_meta(struct btf_verifier_env *env,
 		return -EINVAL;
 	}
 
-	component_idx = btf_type_tag(t)->component_idx;
+	component_idx = btf_type_decl_tag(t)->component_idx;
 	if (component_idx < -1) {
 		btf_verifier_log_type(env, t, "Invalid component_idx");
 		return -EINVAL;
@@ -3863,7 +3863,7 @@ static s32 btf_tag_check_meta(struct btf_verifier_env *env,
 	return meta_needed;
 }
 
-static int btf_tag_resolve(struct btf_verifier_env *env,
+static int btf_decl_tag_resolve(struct btf_verifier_env *env,
 			   const struct resolve_vertex *v)
 {
 	const struct btf_type *next_type;
@@ -3874,7 +3874,7 @@ static int btf_tag_resolve(struct btf_verifier_env *env,
 	u32 vlen;
 
 	next_type = btf_type_by_id(btf, next_type_id);
-	if (!next_type || !btf_type_is_tag_target(next_type)) {
+	if (!next_type || !btf_type_is_decl_tag_target(next_type)) {
 		btf_verifier_log_type(env, v->t, "Invalid type_id");
 		return -EINVAL;
 	}
@@ -3883,7 +3883,7 @@ static int btf_tag_resolve(struct btf_verifier_env *env,
 	    !env_type_is_resolved(env, next_type_id))
 		return env_stack_push(env, next_type, next_type_id);
 
-	component_idx = btf_type_tag(t)->component_idx;
+	component_idx = btf_type_decl_tag(t)->component_idx;
 	if (component_idx != -1) {
 		if (btf_type_is_var(next_type)) {
 			btf_verifier_log_type(env, v->t, "Invalid component_idx");
@@ -3909,18 +3909,18 @@ static int btf_tag_resolve(struct btf_verifier_env *env,
 	return 0;
 }
 
-static void btf_tag_log(struct btf_verifier_env *env, const struct btf_type *t)
+static void btf_decl_tag_log(struct btf_verifier_env *env, const struct btf_type *t)
 {
 	btf_verifier_log(env, "type=%u component_idx=%d", t->type,
-			 btf_type_tag(t)->component_idx);
+			 btf_type_decl_tag(t)->component_idx);
 }
 
-static const struct btf_kind_operations tag_ops = {
-	.check_meta = btf_tag_check_meta,
-	.resolve = btf_tag_resolve,
+static const struct btf_kind_operations decl_tag_ops = {
+	.check_meta = btf_decl_tag_check_meta,
+	.resolve = btf_decl_tag_resolve,
 	.check_member = btf_df_check_member,
 	.check_kflag_member = btf_df_check_kflag_member,
-	.log_details = btf_tag_log,
+	.log_details = btf_decl_tag_log,
 	.show = btf_df_show,
 };
 
@@ -4058,7 +4058,7 @@ static const struct btf_kind_operations * const kind_ops[NR_BTF_KINDS] = {
 	[BTF_KIND_VAR] = &var_ops,
 	[BTF_KIND_DATASEC] = &datasec_ops,
 	[BTF_KIND_FLOAT] = &float_ops,
-	[BTF_KIND_TAG] = &tag_ops,
+	[BTF_KIND_DECL_TAG] = &decl_tag_ops,
 };
 
 static s32 btf_check_meta(struct btf_verifier_env *env,
@@ -4143,7 +4143,7 @@ static bool btf_resolve_valid(struct btf_verifier_env *env,
 		return !btf_resolved_type_id(btf, type_id) &&
 		       !btf_resolved_type_size(btf, type_id);
 
-	if (btf_type_is_tag(t))
+	if (btf_type_is_decl_tag(t))
 		return btf_resolved_type_id(btf, type_id) &&
 		       !btf_resolved_type_size(btf, type_id);
 
diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index 49743ad96851..7b68d4f65fe6 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -37,7 +37,7 @@ static const char * const btf_kind_str[NR_BTF_KINDS] = {
 	[BTF_KIND_VAR]		= "VAR",
 	[BTF_KIND_DATASEC]	= "DATASEC",
 	[BTF_KIND_FLOAT]	= "FLOAT",
-	[BTF_KIND_TAG]		= "TAG",
+	[BTF_KIND_DECL_TAG]	= "DECL_TAG",
 };
 
 struct btf_attach_table {
@@ -348,8 +348,8 @@ static int dump_btf_type(const struct btf *btf, __u32 id,
 			printf(" size=%u", t->size);
 		break;
 	}
-	case BTF_KIND_TAG: {
-		const struct btf_tag *tag = (const void *)(t + 1);
+	case BTF_KIND_DECL_TAG: {
+		const struct btf_decl_tag *tag = (const void *)(t + 1);
 
 		if (json_output) {
 			jsonw_uint_field(w, "type_id", t->type);
diff --git a/tools/include/uapi/linux/btf.h b/tools/include/uapi/linux/btf.h
index 642b6ecb37d7..deb12f755f0f 100644
--- a/tools/include/uapi/linux/btf.h
+++ b/tools/include/uapi/linux/btf.h
@@ -43,7 +43,7 @@ struct btf_type {
 	 * "size" tells the size of the type it is describing.
 	 *
 	 * "type" is used by PTR, TYPEDEF, VOLATILE, CONST, RESTRICT,
-	 * FUNC, FUNC_PROTO, VAR and TAG.
+	 * FUNC, FUNC_PROTO, VAR and DECL_TAG.
 	 * "type" is a type_id referring to another type.
 	 */
 	union {
@@ -74,7 +74,7 @@ enum {
 	BTF_KIND_VAR		= 14,	/* Variable	*/
 	BTF_KIND_DATASEC	= 15,	/* Section	*/
 	BTF_KIND_FLOAT		= 16,	/* Floating point	*/
-	BTF_KIND_TAG		= 17,	/* Tag */
+	BTF_KIND_DECL_TAG	= 17,	/* Decl Tag */
 
 	NR_BTF_KINDS,
 	BTF_KIND_MAX		= NR_BTF_KINDS - 1,
@@ -174,14 +174,14 @@ struct btf_var_secinfo {
 	__u32	size;
 };
 
-/* BTF_KIND_TAG is followed by a single "struct btf_tag" to describe
+/* BTF_KIND_DECL_TAG is followed by a single "struct btf_decl_tag" to describe
  * additional information related to the tag applied location.
  * If component_idx == -1, the tag is applied to a struct, union,
  * variable or function. Otherwise, it is applied to a struct/union
  * member or a func argument, and component_idx indicates which member
  * or argument (0 ... vlen-1).
  */
-struct btf_tag {
+struct btf_decl_tag {
        __s32   component_idx;
 };
 
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 60fbd1c6d466..1f6dea11f600 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -309,8 +309,8 @@ static int btf_type_size(const struct btf_type *t)
 		return base_size + sizeof(struct btf_var);
 	case BTF_KIND_DATASEC:
 		return base_size + vlen * sizeof(struct btf_var_secinfo);
-	case BTF_KIND_TAG:
-		return base_size + sizeof(struct btf_tag);
+	case BTF_KIND_DECL_TAG:
+		return base_size + sizeof(struct btf_decl_tag);
 	default:
 		pr_debug("Unsupported BTF_KIND:%u\n", btf_kind(t));
 		return -EINVAL;
@@ -383,8 +383,8 @@ static int btf_bswap_type_rest(struct btf_type *t)
 			v->size = bswap_32(v->size);
 		}
 		return 0;
-	case BTF_KIND_TAG:
-		btf_tag(t)->component_idx = bswap_32(btf_tag(t)->component_idx);
+	case BTF_KIND_DECL_TAG:
+		btf_decl_tag(t)->component_idx = bswap_32(btf_decl_tag(t)->component_idx);
 		return 0;
 	default:
 		pr_debug("Unsupported BTF_KIND:%u\n", btf_kind(t));
@@ -596,7 +596,7 @@ __s64 btf__resolve_size(const struct btf *btf, __u32 type_id)
 		case BTF_KIND_CONST:
 		case BTF_KIND_RESTRICT:
 		case BTF_KIND_VAR:
-		case BTF_KIND_TAG:
+		case BTF_KIND_DECL_TAG:
 			type_id = t->type;
 			break;
 		case BTF_KIND_ARRAY:
@@ -2569,7 +2569,7 @@ int btf__add_datasec_var_info(struct btf *btf, int var_type_id, __u32 offset, __
 }
 
 /*
- * Append new BTF_KIND_TAG type with:
+ * Append new BTF_KIND_DECL_TAG type with:
  *   - *value* - non-empty/non-NULL string;
  *   - *ref_type_id* - referenced type ID, it might not exist yet;
  *   - *component_idx* - -1 for tagging reference type, otherwise struct/union
@@ -2578,7 +2578,7 @@ int btf__add_datasec_var_info(struct btf *btf, int var_type_id, __u32 offset, __
  *   - >0, type ID of newly added BTF type;
  *   - <0, on error.
  */
-int btf__add_tag(struct btf *btf, const char *value, int ref_type_id,
+int btf__add_decl_tag(struct btf *btf, const char *value, int ref_type_id,
 		 int component_idx)
 {
 	struct btf_type *t;
@@ -2593,7 +2593,7 @@ int btf__add_tag(struct btf *btf, const char *value, int ref_type_id,
 	if (btf_ensure_modifiable(btf))
 		return libbpf_err(-ENOMEM);
 
-	sz = sizeof(struct btf_type) + sizeof(struct btf_tag);
+	sz = sizeof(struct btf_type) + sizeof(struct btf_decl_tag);
 	t = btf_add_type_mem(btf, sz);
 	if (!t)
 		return libbpf_err(-ENOMEM);
@@ -2603,9 +2603,9 @@ int btf__add_tag(struct btf *btf, const char *value, int ref_type_id,
 		return value_off;
 
 	t->name_off = value_off;
-	t->info = btf_type_info(BTF_KIND_TAG, 0, false);
+	t->info = btf_type_info(BTF_KIND_DECL_TAG, 0, false);
 	t->type = ref_type_id;
-	btf_tag(t)->component_idx = component_idx;
+	btf_decl_tag(t)->component_idx = component_idx;
 
 	return btf_commit_type(btf, sz);
 }
@@ -3427,7 +3427,7 @@ static bool btf_equal_common(struct btf_type *t1, struct btf_type *t2)
 }
 
 /* Calculate type signature hash of INT or TAG. */
-static long btf_hash_int_tag(struct btf_type *t)
+static long btf_hash_int_decl_tag(struct btf_type *t)
 {
 	__u32 info = *(__u32 *)(t + 1);
 	long h;
@@ -3705,8 +3705,8 @@ static int btf_dedup_prep(struct btf_dedup *d)
 			h = btf_hash_common(t);
 			break;
 		case BTF_KIND_INT:
-		case BTF_KIND_TAG:
-			h = btf_hash_int_tag(t);
+		case BTF_KIND_DECL_TAG:
+			h = btf_hash_int_decl_tag(t);
 			break;
 		case BTF_KIND_ENUM:
 			h = btf_hash_enum(t);
@@ -3761,11 +3761,11 @@ static int btf_dedup_prim_type(struct btf_dedup *d, __u32 type_id)
 	case BTF_KIND_FUNC_PROTO:
 	case BTF_KIND_VAR:
 	case BTF_KIND_DATASEC:
-	case BTF_KIND_TAG:
+	case BTF_KIND_DECL_TAG:
 		return 0;
 
 	case BTF_KIND_INT:
-		h = btf_hash_int_tag(t);
+		h = btf_hash_int_decl_tag(t);
 		for_each_dedup_cand(d, hash_entry, h) {
 			cand_id = (__u32)(long)hash_entry->value;
 			cand = btf_type_by_id(d->btf, cand_id);
@@ -4382,13 +4382,13 @@ static int btf_dedup_ref_type(struct btf_dedup *d, __u32 type_id)
 		}
 		break;
 
-	case BTF_KIND_TAG:
+	case BTF_KIND_DECL_TAG:
 		ref_type_id = btf_dedup_ref_type(d, t->type);
 		if (ref_type_id < 0)
 			return ref_type_id;
 		t->type = ref_type_id;
 
-		h = btf_hash_int_tag(t);
+		h = btf_hash_int_decl_tag(t);
 		for_each_dedup_cand(d, hash_entry, h) {
 			cand_id = (__u32)(long)hash_entry->value;
 			cand = btf_type_by_id(d->btf, cand_id);
@@ -4671,7 +4671,7 @@ int btf_type_visit_type_ids(struct btf_type *t, type_id_visit_fn visit, void *ct
 	case BTF_KIND_TYPEDEF:
 	case BTF_KIND_FUNC:
 	case BTF_KIND_VAR:
-	case BTF_KIND_TAG:
+	case BTF_KIND_DECL_TAG:
 		return visit(&t->type, ctx);
 
 	case BTF_KIND_ARRAY: {
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h
index 864eb51753a1..4011e206e6f7 100644
--- a/tools/lib/bpf/btf.h
+++ b/tools/lib/bpf/btf.h
@@ -236,7 +236,7 @@ LIBBPF_API int btf__add_datasec_var_info(struct btf *btf, int var_type_id,
 					 __u32 offset, __u32 byte_sz);
 
 /* tag construction API */
-LIBBPF_API int btf__add_tag(struct btf *btf, const char *value, int ref_type_id,
+LIBBPF_API int btf__add_decl_tag(struct btf *btf, const char *value, int ref_type_id,
 			    int component_idx);
 
 struct btf_dedup_opts {
@@ -426,9 +426,9 @@ static inline bool btf_is_float(const struct btf_type *t)
 	return btf_kind(t) == BTF_KIND_FLOAT;
 }
 
-static inline bool btf_is_tag(const struct btf_type *t)
+static inline bool btf_is_decl_tag(const struct btf_type *t)
 {
-	return btf_kind(t) == BTF_KIND_TAG;
+	return btf_kind(t) == BTF_KIND_DECL_TAG;
 }
 
 static inline __u8 btf_int_encoding(const struct btf_type *t)
@@ -499,10 +499,10 @@ btf_var_secinfos(const struct btf_type *t)
 	return (struct btf_var_secinfo *)(t + 1);
 }
 
-struct btf_tag;
-static inline struct btf_tag *btf_tag(const struct btf_type *t)
+struct btf_decl_tag;
+static inline struct btf_decl_tag *btf_decl_tag(const struct btf_type *t)
 {
-	return (struct btf_tag *)(t + 1);
+	return (struct btf_decl_tag *)(t + 1);
 }
 
 #ifdef __cplusplus
diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
index ad6df97295ae..5ef42f0abed1 100644
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -316,7 +316,7 @@ static int btf_dump_mark_referenced(struct btf_dump *d)
 		case BTF_KIND_TYPEDEF:
 		case BTF_KIND_FUNC:
 		case BTF_KIND_VAR:
-		case BTF_KIND_TAG:
+		case BTF_KIND_DECL_TAG:
 			d->type_states[t->type].referenced = 1;
 			break;
 
@@ -584,7 +584,7 @@ static int btf_dump_order_type(struct btf_dump *d, __u32 id, bool through_ptr)
 	case BTF_KIND_FUNC:
 	case BTF_KIND_VAR:
 	case BTF_KIND_DATASEC:
-	case BTF_KIND_TAG:
+	case BTF_KIND_DECL_TAG:
 		d->type_states[id].order_state = ORDERED;
 		return 0;
 
@@ -2217,7 +2217,7 @@ static int btf_dump_dump_type_data(struct btf_dump *d,
 	case BTF_KIND_FWD:
 	case BTF_KIND_FUNC:
 	case BTF_KIND_FUNC_PROTO:
-	case BTF_KIND_TAG:
+	case BTF_KIND_DECL_TAG:
 		err = btf_dump_unsupported_data(d, t, id);
 		break;
 	case BTF_KIND_INT:
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index ae0889bebe32..63d738654ff6 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -195,8 +195,8 @@ enum kern_feature_id {
 	FEAT_BTF_FLOAT,
 	/* BPF perf link support */
 	FEAT_PERF_LINK,
-	/* BTF_KIND_TAG support */
-	FEAT_BTF_TAG,
+	/* BTF_KIND_DECL_TAG support */
+	FEAT_BTF_DECL_TAG,
 	__FEAT_CNT,
 };
 
@@ -2024,7 +2024,7 @@ static const char *__btf_kind_str(__u16 kind)
 	case BTF_KIND_VAR: return "var";
 	case BTF_KIND_DATASEC: return "datasec";
 	case BTF_KIND_FLOAT: return "float";
-	case BTF_KIND_TAG: return "tag";
+	case BTF_KIND_DECL_TAG: return "decl_tag";
 	default: return "unknown";
 	}
 }
@@ -2524,9 +2524,9 @@ static bool btf_needs_sanitization(struct bpf_object *obj)
 	bool has_datasec = kernel_supports(obj, FEAT_BTF_DATASEC);
 	bool has_float = kernel_supports(obj, FEAT_BTF_FLOAT);
 	bool has_func = kernel_supports(obj, FEAT_BTF_FUNC);
-	bool has_tag = kernel_supports(obj, FEAT_BTF_TAG);
+	bool has_decl_tag = kernel_supports(obj, FEAT_BTF_DECL_TAG);
 
-	return !has_func || !has_datasec || !has_func_global || !has_float || !has_tag;
+	return !has_func || !has_datasec || !has_func_global || !has_float || !has_decl_tag;
 }
 
 static void bpf_object__sanitize_btf(struct bpf_object *obj, struct btf *btf)
@@ -2535,15 +2535,15 @@ static void bpf_object__sanitize_btf(struct bpf_object *obj, struct btf *btf)
 	bool has_datasec = kernel_supports(obj, FEAT_BTF_DATASEC);
 	bool has_float = kernel_supports(obj, FEAT_BTF_FLOAT);
 	bool has_func = kernel_supports(obj, FEAT_BTF_FUNC);
-	bool has_tag = kernel_supports(obj, FEAT_BTF_TAG);
+	bool has_decl_tag = kernel_supports(obj, FEAT_BTF_DECL_TAG);
 	struct btf_type *t;
 	int i, j, vlen;
 
 	for (i = 1; i <= btf__get_nr_types(btf); i++) {
 		t = (struct btf_type *)btf__type_by_id(btf, i);
 
-		if ((!has_datasec && btf_is_var(t)) || (!has_tag && btf_is_tag(t))) {
-			/* replace VAR/TAG with INT */
+		if ((!has_datasec && btf_is_var(t)) || (!has_decl_tag && btf_is_decl_tag(t))) {
+			/* replace VAR/DECL_TAG with INT */
 			t->info = BTF_INFO_ENC(BTF_KIND_INT, 0, 0);
 			/*
 			 * using size = 1 is the safest choice, 4 will be too
@@ -4248,7 +4248,7 @@ static int probe_kern_btf_float(void)
 					     strs, sizeof(strs)));
 }
 
-static int probe_kern_btf_tag(void)
+static int probe_kern_btf_decl_tag(void)
 {
 	static const char strs[] = "\0tag";
 	__u32 types[] = {
@@ -4258,7 +4258,7 @@ static int probe_kern_btf_tag(void)
 		BTF_TYPE_ENC(1, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), 1),
 		BTF_VAR_STATIC,
 		/* attr */
-		BTF_TYPE_TAG_ENC(1, 2, -1),
+		BTF_TYPE_DECL_TAG_ENC(1, 2, -1),
 	};
 
 	return probe_fd(libbpf__load_raw_btf((char *)types, sizeof(types),
@@ -4481,8 +4481,8 @@ static struct kern_feature_desc {
 	[FEAT_PERF_LINK] = {
 		"BPF perf link support", probe_perf_link,
 	},
-	[FEAT_BTF_TAG] = {
-		"BTF_KIND_TAG support", probe_kern_btf_tag,
+	[FEAT_BTF_DECL_TAG] = {
+		"BTF_KIND_DECL_TAG support", probe_kern_btf_decl_tag,
 	},
 };
 
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index f270d25e4af3..e6fb1ba49369 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -394,5 +394,5 @@ LIBBPF_0.6.0 {
 		bpf_object__prev_map;
 		bpf_object__prev_program;
 		btf__add_btf;
-		btf__add_tag;
+		btf__add_decl_tag;
 } LIBBPF_0.5.0;
diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h
index f7fd3944d46d..f6a5748dd318 100644
--- a/tools/lib/bpf/libbpf_internal.h
+++ b/tools/lib/bpf/libbpf_internal.h
@@ -69,8 +69,8 @@
 #define BTF_VAR_SECINFO_ENC(type, offset, size) (type), (offset), (size)
 #define BTF_TYPE_FLOAT_ENC(name, sz) \
 	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FLOAT, 0, 0), sz)
-#define BTF_TYPE_TAG_ENC(value, type, component_idx) \
-	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_TAG, 0, 0), type), (component_idx)
+#define BTF_TYPE_DECL_TAG_ENC(value, type, component_idx) \
+	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 0, 0), type), (component_idx)
 
 #ifndef likely
 #define likely(x) __builtin_expect(!!(x), 1)
diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst
index 554553acc6d9..5e287e445f75 100644
--- a/tools/testing/selftests/bpf/README.rst
+++ b/tools/testing/selftests/bpf/README.rst
@@ -204,7 +204,7 @@ __ https://reviews.llvm.org/D93563
 btf_tag test and Clang version
 ==============================
 
-The btf_tag selftest require LLVM support to recognize the btf_tag attribute.
+The btf_tag selftest require LLVM support to recognize the btf_decl_tag attribute.
 It was introduced in `Clang 14`__.
 
 Without it, the btf_tag selftest will be skipped and you will observe:
@@ -213,7 +213,7 @@ Without it, the btf_tag selftest will be skipped and you will observe:
 
   #<test_num> btf_tag:SKIP
 
-__ https://reviews.llvm.org/D106614
+__ https://reviews.llvm.org/D111588
 
 Clang dependencies for static linking tests
 ===========================================
diff --git a/tools/testing/selftests/bpf/btf_helpers.c b/tools/testing/selftests/bpf/btf_helpers.c
index ce103fb0ad1b..668cfa20bb1b 100644
--- a/tools/testing/selftests/bpf/btf_helpers.c
+++ b/tools/testing/selftests/bpf/btf_helpers.c
@@ -24,12 +24,12 @@ static const char * const btf_kind_str_mapping[] = {
 	[BTF_KIND_VAR]		= "VAR",
 	[BTF_KIND_DATASEC]	= "DATASEC",
 	[BTF_KIND_FLOAT]	= "FLOAT",
-	[BTF_KIND_TAG]		= "TAG",
+	[BTF_KIND_DECL_TAG]	= "DECL_TAG",
 };
 
 static const char *btf_kind_str(__u16 kind)
 {
-	if (kind > BTF_KIND_TAG)
+	if (kind > BTF_KIND_DECL_TAG)
 		return "UNKNOWN";
 	return btf_kind_str_mapping[kind];
 }
@@ -178,9 +178,9 @@ int fprintf_btf_type_raw(FILE *out, const struct btf *btf, __u32 id)
 	case BTF_KIND_FLOAT:
 		fprintf(out, " size=%u", t->size);
 		break;
-	case BTF_KIND_TAG:
+	case BTF_KIND_DECL_TAG:
 		fprintf(out, " type_id=%u component_idx=%d",
-			t->type, btf_tag(t)->component_idx);
+			t->type, btf_decl_tag(t)->component_idx);
 		break;
 	default:
 		break;
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index acd33d0cd5d9..fa67f25bbef5 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -3662,15 +3662,15 @@ static struct btf_raw_test raw_tests[] = {
 },
 
 {
-	.descr = "tag test #1, struct/member, well-formed",
+	.descr = "decl_tag test #1, struct/member, well-formed",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_STRUCT_ENC(0, 2, 8),			/* [2] */
 		BTF_MEMBER_ENC(NAME_TBD, 1, 0),
 		BTF_MEMBER_ENC(NAME_TBD, 1, 32),
-		BTF_TAG_ENC(NAME_TBD, 2, -1),
-		BTF_TAG_ENC(NAME_TBD, 2, 0),
-		BTF_TAG_ENC(NAME_TBD, 2, 1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, 0),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, 1),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0m1\0m2\0tag1\0tag2\0tag3"),
@@ -3683,15 +3683,15 @@ static struct btf_raw_test raw_tests[] = {
 	.max_entries = 1,
 },
 {
-	.descr = "tag test #2, union/member, well-formed",
+	.descr = "decl_tag test #2, union/member, well-formed",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_UNION_ENC(NAME_TBD, 2, 4),			/* [2] */
 		BTF_MEMBER_ENC(NAME_TBD, 1, 0),
 		BTF_MEMBER_ENC(NAME_TBD, 1, 0),
-		BTF_TAG_ENC(NAME_TBD, 2, -1),
-		BTF_TAG_ENC(NAME_TBD, 2, 0),
-		BTF_TAG_ENC(NAME_TBD, 2, 1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, 0),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, 1),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
@@ -3704,13 +3704,13 @@ static struct btf_raw_test raw_tests[] = {
 	.max_entries = 1,
 },
 {
-	.descr = "tag test #3, variable, well-formed",
+	.descr = "decl_tag test #3, variable, well-formed",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
 		BTF_VAR_ENC(NAME_TBD, 1, 1),			/* [3] */
-		BTF_TAG_ENC(NAME_TBD, 2, -1),
-		BTF_TAG_ENC(NAME_TBD, 3, -1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 3, -1),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0local\0global\0tag1\0tag2"),
@@ -3723,16 +3723,16 @@ static struct btf_raw_test raw_tests[] = {
 	.max_entries = 1,
 },
 {
-	.descr = "tag test #4, func/parameter, well-formed",
+	.descr = "decl_tag test #4, func/parameter, well-formed",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_FUNC_PROTO_ENC(0, 2),			/* [2] */
 			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
 			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
 		BTF_FUNC_ENC(NAME_TBD, 2),			/* [3] */
-		BTF_TAG_ENC(NAME_TBD, 3, -1),
-		BTF_TAG_ENC(NAME_TBD, 3, 0),
-		BTF_TAG_ENC(NAME_TBD, 3, 1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 3, -1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 3, 0),
+		BTF_DECL_TAG_ENC(NAME_TBD, 3, 1),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0arg1\0arg2\0f\0tag1\0tag2\0tag3"),
@@ -3745,11 +3745,11 @@ static struct btf_raw_test raw_tests[] = {
 	.max_entries = 1,
 },
 {
-	.descr = "tag test #5, invalid value",
+	.descr = "decl_tag test #5, invalid value",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
-		BTF_TAG_ENC(0, 2, -1),
+		BTF_DECL_TAG_ENC(0, 2, -1),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0local\0tag"),
@@ -3764,10 +3764,10 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "Invalid value",
 },
 {
-	.descr = "tag test #6, invalid target type",
+	.descr = "decl_tag test #6, invalid target type",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
-		BTF_TAG_ENC(NAME_TBD, 1, -1),
+		BTF_DECL_TAG_ENC(NAME_TBD, 1, -1),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0tag1"),
@@ -3782,11 +3782,11 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "Invalid type",
 },
 {
-	.descr = "tag test #7, invalid vlen",
+	.descr = "decl_tag test #7, invalid vlen",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
-		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_TAG, 0, 1), 2), (0),
+		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 0, 1), 2), (0),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0local\0tag1"),
@@ -3801,11 +3801,11 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "vlen != 0",
 },
 {
-	.descr = "tag test #8, invalid kflag",
+	.descr = "decl_tag test #8, invalid kflag",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
-		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_TAG, 1, 0), 2), (-1),
+		BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 1, 0), 2), (-1),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0local\0tag1"),
@@ -3820,11 +3820,11 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "Invalid btf_info kind_flag",
 },
 {
-	.descr = "tag test #9, var, invalid component_idx",
+	.descr = "decl_tag test #9, var, invalid component_idx",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_VAR_ENC(NAME_TBD, 1, 0),			/* [2] */
-		BTF_TAG_ENC(NAME_TBD, 2, 0),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, 0),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0local\0tag"),
@@ -3839,13 +3839,13 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "Invalid component_idx",
 },
 {
-	.descr = "tag test #10, struct member, invalid component_idx",
+	.descr = "decl_tag test #10, struct member, invalid component_idx",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_STRUCT_ENC(0, 2, 8),			/* [2] */
 		BTF_MEMBER_ENC(NAME_TBD, 1, 0),
 		BTF_MEMBER_ENC(NAME_TBD, 1, 32),
-		BTF_TAG_ENC(NAME_TBD, 2, 2),
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, 2),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0m1\0m2\0tag"),
@@ -3860,14 +3860,14 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "Invalid component_idx",
 },
 {
-	.descr = "tag test #11, func parameter, invalid component_idx",
+	.descr = "decl_tag test #11, func parameter, invalid component_idx",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_FUNC_PROTO_ENC(0, 2),			/* [2] */
 			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
 			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
 		BTF_FUNC_ENC(NAME_TBD, 2),			/* [3] */
-		BTF_TAG_ENC(NAME_TBD, 3, 2),
+		BTF_DECL_TAG_ENC(NAME_TBD, 3, 2),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0arg1\0arg2\0f\0tag"),
@@ -3882,14 +3882,14 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "Invalid component_idx",
 },
 {
-	.descr = "tag test #12, < -1 component_idx",
+	.descr = "decl_tag test #12, < -1 component_idx",
 	.raw_types = {
 		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
 		BTF_FUNC_PROTO_ENC(0, 2),			/* [2] */
 			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
 			BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
 		BTF_FUNC_ENC(NAME_TBD, 2),			/* [3] */
-		BTF_TAG_ENC(NAME_TBD, 3, -2),
+		BTF_DECL_TAG_ENC(NAME_TBD, 3, -2),
 		BTF_END_RAW,
 	},
 	BTF_STR_SEC("\0arg1\0arg2\0f\0tag"),
@@ -6672,9 +6672,9 @@ const struct btf_dedup_test dedup_tests[] = {
 			/* const -> [1] int */
 			BTF_CONST_ENC(1),						/* [6] */
 			/* tag -> [3] struct s */
-			BTF_TAG_ENC(NAME_NTH(2), 3, -1),				/* [7] */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 3, -1),				/* [7] */
 			/* tag -> [3] struct s, member 1 */
-			BTF_TAG_ENC(NAME_NTH(2), 3, 1),					/* [8] */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 3, 1),				/* [8] */
 
 			/* full copy of the above */
 			BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),	/* [9] */
@@ -6689,8 +6689,8 @@ const struct btf_dedup_test dedup_tests[] = {
 			BTF_PTR_ENC(14),						/* [13] */
 			BTF_CONST_ENC(9),						/* [14] */
 			BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4),				/* [15] */
-			BTF_TAG_ENC(NAME_NTH(2), 11, -1),				/* [16] */
-			BTF_TAG_ENC(NAME_NTH(2), 11, 1),				/* [17] */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 11, -1),				/* [16] */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 11, 1),				/* [17] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0int\0s\0next\0a\0b\0c\0float\0d"),
@@ -6714,8 +6714,8 @@ const struct btf_dedup_test dedup_tests[] = {
 			BTF_PTR_ENC(6),							/* [5] */
 			/* const -> [1] int */
 			BTF_CONST_ENC(1),						/* [6] */
-			BTF_TAG_ENC(NAME_NTH(2), 3, -1),				/* [7] */
-			BTF_TAG_ENC(NAME_NTH(2), 3, 1),					/* [8] */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 3, -1),				/* [7] */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 3, 1),				/* [8] */
 			BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4),				/* [9] */
 			BTF_END_RAW,
 		},
@@ -6841,8 +6841,8 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
 			BTF_FUNC_ENC(NAME_TBD, 12),					/* [13] func */
 			BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),				/* [14] float */
-			BTF_TAG_ENC(NAME_TBD, 13, -1),					/* [15] tag */
-			BTF_TAG_ENC(NAME_TBD, 13, 1),					/* [16] tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 13, -1),				/* [15] tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 13, 1),				/* [16] tag */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P"),
@@ -6869,8 +6869,8 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
 			BTF_FUNC_ENC(NAME_TBD, 12),					/* [13] func */
 			BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),				/* [14] float */
-			BTF_TAG_ENC(NAME_TBD, 13, -1),					/* [15] tag */
-			BTF_TAG_ENC(NAME_TBD, 13, 1),					/* [16] tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 13, -1),				/* [15] tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 13, 1),				/* [16] tag */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P"),
@@ -7036,14 +7036,14 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(3), 1),
 			BTF_FUNC_ENC(NAME_NTH(4), 2),			/* [4] */
 			/* tag -> t */
-			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
-			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [6] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),		/* [6] */
 			/* tag -> func */
-			BTF_TAG_ENC(NAME_NTH(5), 4, -1),		/* [7] */
-			BTF_TAG_ENC(NAME_NTH(5), 4, -1),		/* [8] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 4, -1),		/* [7] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 4, -1),		/* [8] */
 			/* tag -> func arg a1 */
-			BTF_TAG_ENC(NAME_NTH(5), 4, 1),			/* [9] */
-			BTF_TAG_ENC(NAME_NTH(5), 4, 1),			/* [10] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 4, 1),		/* [9] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 4, 1),		/* [10] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0t\0a1\0a2\0f\0tag"),
@@ -7056,9 +7056,9 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
 				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(3), 1),
 			BTF_FUNC_ENC(NAME_NTH(4), 2),			/* [4] */
-			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
-			BTF_TAG_ENC(NAME_NTH(5), 4, -1),		/* [6] */
-			BTF_TAG_ENC(NAME_NTH(5), 4, 1),			/* [7] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 4, -1),		/* [6] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 4, 1),		/* [7] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0t\0a1\0a2\0f\0tag"),
@@ -7084,17 +7084,17 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
 			BTF_FUNC_ENC(NAME_NTH(3), 4),			/* [5] */
 			/* tag -> f: tag1, tag2 */
-			BTF_TAG_ENC(NAME_NTH(4), 3, -1),		/* [6] */
-			BTF_TAG_ENC(NAME_NTH(5), 3, -1),		/* [7] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1),		/* [6] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 3, -1),		/* [7] */
 			/* tag -> f/a2: tag1, tag2 */
-			BTF_TAG_ENC(NAME_NTH(4), 3, 1),			/* [8] */
-			BTF_TAG_ENC(NAME_NTH(5), 3, 1),			/* [9] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 3, 1),		/* [8] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 3, 1),		/* [9] */
 			/* tag -> f: tag1, tag3 */
-			BTF_TAG_ENC(NAME_NTH(4), 5, -1),		/* [10] */
-			BTF_TAG_ENC(NAME_NTH(6), 5, -1),		/* [11] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 5, -1),		/* [10] */
+			BTF_DECL_TAG_ENC(NAME_NTH(6), 5, -1),		/* [11] */
 			/* tag -> f/a2: tag1, tag3 */
-			BTF_TAG_ENC(NAME_NTH(4), 5, 1),			/* [12] */
-			BTF_TAG_ENC(NAME_NTH(6), 5, 1),			/* [13] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 5, 1),		/* [12] */
+			BTF_DECL_TAG_ENC(NAME_NTH(6), 5, 1),		/* [13] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0a1\0a2\0f\0tag1\0tag2\0tag3"),
@@ -7106,12 +7106,12 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 1),
 				BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
 			BTF_FUNC_ENC(NAME_NTH(3), 2),			/* [3] */
-			BTF_TAG_ENC(NAME_NTH(4), 3, -1),		/* [4] */
-			BTF_TAG_ENC(NAME_NTH(5), 3, -1),		/* [5] */
-			BTF_TAG_ENC(NAME_NTH(6), 3, -1),		/* [6] */
-			BTF_TAG_ENC(NAME_NTH(4), 3, 1),			/* [7] */
-			BTF_TAG_ENC(NAME_NTH(5), 3, 1),			/* [8] */
-			BTF_TAG_ENC(NAME_NTH(6), 3, 1),			/* [9] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1),		/* [4] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 3, -1),		/* [5] */
+			BTF_DECL_TAG_ENC(NAME_NTH(6), 3, -1),		/* [6] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 3, 1),		/* [7] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 3, 1),		/* [8] */
+			BTF_DECL_TAG_ENC(NAME_NTH(6), 3, 1),		/* [9] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0a1\0a2\0f\0tag1\0tag2\0tag3"),
@@ -7133,17 +7133,17 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
 				BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
 			/* tag -> t: tag1, tag2 */
-			BTF_TAG_ENC(NAME_NTH(4), 2, -1),		/* [4] */
-			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 2, -1),		/* [4] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),		/* [5] */
 			/* tag -> t/m2: tag1, tag2 */
-			BTF_TAG_ENC(NAME_NTH(4), 2, 1),			/* [6] */
-			BTF_TAG_ENC(NAME_NTH(5), 2, 1),			/* [7] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 2, 1),		/* [6] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 2, 1),		/* [7] */
 			/* tag -> t: tag1, tag3 */
-			BTF_TAG_ENC(NAME_NTH(4), 3, -1),		/* [8] */
-			BTF_TAG_ENC(NAME_NTH(6), 3, -1),		/* [9] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1),		/* [8] */
+			BTF_DECL_TAG_ENC(NAME_NTH(6), 3, -1),		/* [9] */
 			/* tag -> t/m2: tag1, tag3 */
-			BTF_TAG_ENC(NAME_NTH(4), 3, 1),			/* [10] */
-			BTF_TAG_ENC(NAME_NTH(6), 3, 1),			/* [11] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 3, 1),		/* [10] */
+			BTF_DECL_TAG_ENC(NAME_NTH(6), 3, 1),		/* [11] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
@@ -7154,12 +7154,12 @@ const struct btf_dedup_test dedup_tests[] = {
 			BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),		/* [2] */
 				BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
 				BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
-			BTF_TAG_ENC(NAME_NTH(4), 2, -1),		/* [3] */
-			BTF_TAG_ENC(NAME_NTH(5), 2, -1),		/* [4] */
-			BTF_TAG_ENC(NAME_NTH(6), 2, -1),		/* [5] */
-			BTF_TAG_ENC(NAME_NTH(4), 2, 1),			/* [6] */
-			BTF_TAG_ENC(NAME_NTH(5), 2, 1),			/* [7] */
-			BTF_TAG_ENC(NAME_NTH(6), 2, 1),			/* [8] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 2, -1),		/* [3] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),		/* [4] */
+			BTF_DECL_TAG_ENC(NAME_NTH(6), 2, -1),		/* [5] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 2, 1),		/* [6] */
+			BTF_DECL_TAG_ENC(NAME_NTH(5), 2, 1),		/* [7] */
+			BTF_DECL_TAG_ENC(NAME_NTH(6), 2, 1),		/* [8] */
 			BTF_END_RAW,
 		},
 		BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
@@ -7202,8 +7202,8 @@ static int btf_type_size(const struct btf_type *t)
 		return base_size + sizeof(struct btf_var);
 	case BTF_KIND_DATASEC:
 		return base_size + vlen * sizeof(struct btf_var_secinfo);
-	case BTF_KIND_TAG:
-		return base_size + sizeof(struct btf_tag);
+	case BTF_KIND_DECL_TAG:
+		return base_size + sizeof(struct btf_decl_tag);
 	default:
 		fprintf(stderr, "Unsupported BTF_KIND:%u\n", kind);
 		return -EINVAL;
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_write.c b/tools/testing/selftests/bpf/prog_tests/btf_write.c
index 886e0fc1efb1..b912eeb0b6b4 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_write.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_write.c
@@ -277,26 +277,26 @@ static void gen_btf(struct btf *btf)
 		     "[17] DATASEC 'datasec1' size=12 vlen=1\n"
 		     "\ttype_id=1 offset=4 size=8", "raw_dump");
 
-	/* TAG */
-	id = btf__add_tag(btf, "tag1", 16, -1);
+	/* DECL_TAG */
+	id = btf__add_decl_tag(btf, "tag1", 16, -1);
 	ASSERT_EQ(id, 18, "tag_id");
 	t = btf__type_by_id(btf, 18);
 	ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag1", "tag_value");
-	ASSERT_EQ(btf_kind(t), BTF_KIND_TAG, "tag_kind");
+	ASSERT_EQ(btf_kind(t), BTF_KIND_DECL_TAG, "tag_kind");
 	ASSERT_EQ(t->type, 16, "tag_type");
-	ASSERT_EQ(btf_tag(t)->component_idx, -1, "tag_component_idx");
+	ASSERT_EQ(btf_decl_tag(t)->component_idx, -1, "tag_component_idx");
 	ASSERT_STREQ(btf_type_raw_dump(btf, 18),
-		     "[18] TAG 'tag1' type_id=16 component_idx=-1", "raw_dump");
+		     "[18] DECL_TAG 'tag1' type_id=16 component_idx=-1", "raw_dump");
 
-	id = btf__add_tag(btf, "tag2", 14, 1);
+	id = btf__add_decl_tag(btf, "tag2", 14, 1);
 	ASSERT_EQ(id, 19, "tag_id");
 	t = btf__type_by_id(btf, 19);
 	ASSERT_STREQ(btf__str_by_offset(btf, t->name_off), "tag2", "tag_value");
-	ASSERT_EQ(btf_kind(t), BTF_KIND_TAG, "tag_kind");
+	ASSERT_EQ(btf_kind(t), BTF_KIND_DECL_TAG, "tag_kind");
 	ASSERT_EQ(t->type, 14, "tag_type");
-	ASSERT_EQ(btf_tag(t)->component_idx, 1, "tag_component_idx");
+	ASSERT_EQ(btf_decl_tag(t)->component_idx, 1, "tag_component_idx");
 	ASSERT_STREQ(btf_type_raw_dump(btf, 19),
-		     "[19] TAG 'tag2' type_id=14 component_idx=1", "raw_dump");
+		     "[19] DECL_TAG 'tag2' type_id=14 component_idx=1", "raw_dump");
 }
 
 static void test_btf_add()
@@ -336,8 +336,8 @@ static void test_btf_add()
 		"[16] VAR 'var1' type_id=1, linkage=global-alloc",
 		"[17] DATASEC 'datasec1' size=12 vlen=1\n"
 		"\ttype_id=1 offset=4 size=8",
-		"[18] TAG 'tag1' type_id=16 component_idx=-1",
-		"[19] TAG 'tag2' type_id=14 component_idx=1");
+		"[18] DECL_TAG 'tag1' type_id=16 component_idx=-1",
+		"[19] DECL_TAG 'tag2' type_id=14 component_idx=1");
 
 	btf__free(btf);
 }
@@ -389,8 +389,8 @@ static void test_btf_add_btf()
 		"[16] VAR 'var1' type_id=1, linkage=global-alloc",
 		"[17] DATASEC 'datasec1' size=12 vlen=1\n"
 		"\ttype_id=1 offset=4 size=8",
-		"[18] TAG 'tag1' type_id=16 component_idx=-1",
-		"[19] TAG 'tag2' type_id=14 component_idx=1",
+		"[18] DECL_TAG 'tag1' type_id=16 component_idx=-1",
+		"[19] DECL_TAG 'tag2' type_id=14 component_idx=1",
 
 		/* types appended from the second BTF */
 		"[20] INT 'int' size=4 bits_offset=0 nr_bits=32 encoding=SIGNED",
@@ -418,8 +418,8 @@ static void test_btf_add_btf()
 		"[35] VAR 'var1' type_id=20, linkage=global-alloc",
 		"[36] DATASEC 'datasec1' size=12 vlen=1\n"
 		"\ttype_id=20 offset=4 size=8",
-		"[37] TAG 'tag1' type_id=35 component_idx=-1",
-		"[38] TAG 'tag2' type_id=33 component_idx=1");
+		"[37] DECL_TAG 'tag1' type_id=35 component_idx=-1",
+		"[38] DECL_TAG 'tag2' type_id=33 component_idx=1");
 
 cleanup:
 	btf__free(btf1);
diff --git a/tools/testing/selftests/bpf/progs/tag.c b/tools/testing/selftests/bpf/progs/tag.c
index b46b1bfac7da..672d19e7b120 100644
--- a/tools/testing/selftests/bpf/progs/tag.c
+++ b/tools/testing/selftests/bpf/progs/tag.c
@@ -8,9 +8,9 @@
 #define __has_attribute(x) 0
 #endif
 
-#if __has_attribute(btf_tag)
-#define __tag1 __attribute__((btf_tag("tag1")))
-#define __tag2 __attribute__((btf_tag("tag2")))
+#if __has_attribute(btf_decl_tag)
+#define __tag1 __attribute__((btf_decl_tag("tag1")))
+#define __tag2 __attribute__((btf_decl_tag("tag2")))
 volatile const bool skip_tests __tag1 __tag2 = false;
 #else
 #define __tag1
diff --git a/tools/testing/selftests/bpf/test_btf.h b/tools/testing/selftests/bpf/test_btf.h
index 0619e06d745e..32c7a57867da 100644
--- a/tools/testing/selftests/bpf/test_btf.h
+++ b/tools/testing/selftests/bpf/test_btf.h
@@ -69,7 +69,7 @@
 #define BTF_TYPE_FLOAT_ENC(name, sz) \
 	BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FLOAT, 0, 0), sz)
 
-#define BTF_TAG_ENC(value, type, component_idx)	\
-	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_TAG, 0, 0), type), (component_idx)
+#define BTF_DECL_TAG_ENC(value, type, component_idx)	\
+	BTF_TYPE_ENC(value, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 0, 0), type), (component_idx)
 
 #endif /* _TEST_BTF_H */
-- 
cgit v1.2.3


From 29c1eac2e64eda847d6ea51a00c2021198447ed9 Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@nvidia.com>
Date: Tue, 19 Oct 2021 11:07:12 +0300
Subject: selftests: mlxsw: Add a test for un/offloadable qdisc trees

This checks that various qdisc configurations either are or are not
offloaded.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../selftests/drivers/net/mlxsw/sch_offload.sh     | 276 +++++++++++++++++++++
 1 file changed, 276 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh
new file mode 100755
index 000000000000..ade79ef08de3
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh
@@ -0,0 +1,276 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Test qdisc offload indication
+
+
+ALL_TESTS="
+	test_root
+	test_etsprio
+"
+NUM_NETIFS=1
+lib_dir=$(dirname $0)/../../../net/forwarding
+source $lib_dir/lib.sh
+
+check_not_offloaded()
+{
+	local handle=$1; shift
+	local h
+	local offloaded
+
+	h=$(qdisc_stats_get $h1 "$handle" .handle)
+	[[ $h == '"'$handle'"' ]]
+	check_err $? "Qdisc with handle $handle does not exist"
+
+	offloaded=$(qdisc_stats_get $h1 "$handle" .offloaded)
+	[[ $offloaded == true ]]
+	check_fail $? "Qdisc with handle $handle offloaded, but should not be"
+}
+
+check_all_offloaded()
+{
+	local handle=$1; shift
+
+	if [[ ! -z $handle ]]; then
+		local offloaded=$(qdisc_stats_get $h1 "$handle" .offloaded)
+		[[ $offloaded == true ]]
+		check_err $? "Qdisc with handle $handle not offloaded"
+	fi
+
+	local unoffloaded=$(tc q sh dev $h1 invisible |
+				grep -v offloaded |
+				sed s/root/parent\ root/ |
+				cut -d' ' -f 5)
+	[[ -z $unoffloaded ]]
+	check_err $? "Qdiscs with following parents not offloaded: $unoffloaded"
+
+	pre_cleanup
+}
+
+with_ets()
+{
+	local handle=$1; shift
+	local locus=$1; shift
+
+	tc qdisc add dev $h1 $locus handle $handle \
+	   ets bands 8 priomap 7 6 5 4 3 2 1 0
+	"$@"
+	tc qdisc del dev $h1 $locus
+}
+
+with_prio()
+{
+	local handle=$1; shift
+	local locus=$1; shift
+
+	tc qdisc add dev $h1 $locus handle $handle \
+	   prio bands 8 priomap 7 6 5 4 3 2 1 0
+	"$@"
+	tc qdisc del dev $h1 $locus
+}
+
+with_red()
+{
+	local handle=$1; shift
+	local locus=$1; shift
+
+	tc qdisc add dev $h1 $locus handle $handle \
+	   red limit 1000000 min 200000 max 300000 probability 0.5 avpkt 1500
+	"$@"
+	tc qdisc del dev $h1 $locus
+}
+
+with_tbf()
+{
+	local handle=$1; shift
+	local locus=$1; shift
+
+	tc qdisc add dev $h1 $locus handle $handle \
+	   tbf rate 400Mbit burst 128K limit 1M
+	"$@"
+	tc qdisc del dev $h1 $locus
+}
+
+with_pfifo()
+{
+	local handle=$1; shift
+	local locus=$1; shift
+
+	tc qdisc add dev $h1 $locus handle $handle pfifo limit 100K
+	"$@"
+	tc qdisc del dev $h1 $locus
+}
+
+with_bfifo()
+{
+	local handle=$1; shift
+	local locus=$1; shift
+
+	tc qdisc add dev $h1 $locus handle $handle bfifo limit 100K
+	"$@"
+	tc qdisc del dev $h1 $locus
+}
+
+with_drr()
+{
+	local handle=$1; shift
+	local locus=$1; shift
+
+	tc qdisc add dev $h1 $locus handle $handle drr
+	"$@"
+	tc qdisc del dev $h1 $locus
+}
+
+with_qdiscs()
+{
+	local handle=$1; shift
+	local parent=$1; shift
+	local kind=$1; shift
+	local next_handle=$((handle * 2))
+	local locus;
+
+	if [[ $kind == "--" ]]; then
+		local cmd=$1; shift
+		$cmd $(printf %x: $parent) "$@"
+	else
+		if ((parent == 0)); then
+			locus=root
+		else
+			locus=$(printf "parent %x:1" $parent)
+		fi
+
+		with_$kind $(printf %x: $handle) "$locus" \
+			with_qdiscs $next_handle $handle "$@"
+	fi
+}
+
+get_name()
+{
+	local parent=$1; shift
+	local name=$(echo "" "${@^^}" | tr ' ' -)
+
+	if ((parent != 0)); then
+		kind=$(qdisc_stats_get $h1 $parent: .kind)
+		kind=${kind%\"}
+		kind=${kind#\"}
+		name="-${kind^^}$name"
+	fi
+
+	echo root$name
+}
+
+do_test_offloaded()
+{
+	local handle=$1; shift
+	local parent=$1; shift
+
+	RET=0
+	with_qdiscs $handle $parent "$@" -- check_all_offloaded
+	log_test $(get_name $parent "$@")" offloaded"
+}
+
+do_test_nooffload()
+{
+	local handle=$1; shift
+	local parent=$1; shift
+
+	local name=$(echo "${@^^}" | tr ' ' -)
+	local kind
+
+	RET=0
+	with_qdiscs $handle $parent "$@" -- check_not_offloaded
+	log_test $(get_name $parent "$@")" not offloaded"
+}
+
+do_test_combinations()
+{
+	local handle=$1; shift
+	local parent=$1; shift
+
+	local cont
+	local leaf
+	local fifo
+
+	for cont in "" ets prio; do
+		for leaf in "" red tbf "red tbf" "tbf red"; do
+			for fifo in "" pfifo bfifo; do
+				if [[ -z "$cont$leaf$fifo" ]]; then
+					continue
+				fi
+				do_test_offloaded $handle $parent \
+						  $cont $leaf $fifo
+			done
+		done
+	done
+
+	for cont in ets prio; do
+		for leaf in red tbf; do
+			do_test_nooffload $handle $parent $cont red tbf $leaf
+			do_test_nooffload $handle $parent $cont tbf red $leaf
+		done
+		for leaf in "red red" "tbf tbf"; do
+			do_test_nooffload $handle $parent $cont $leaf
+		done
+	done
+
+	do_test_nooffload $handle $parent drr
+}
+
+test_root()
+{
+	do_test_combinations 1 0
+}
+
+do_test_etsprio()
+{
+	local parent=$1; shift
+	local tbfpfx=$1; shift
+	local cont
+
+	for cont in ets prio; do
+		RET=0
+		with_$cont 8: "$parent" \
+			with_red 11: "parent 8:1" \
+			with_red 12: "parent 8:2" \
+			with_tbf 13: "parent 8:3" \
+			with_tbf 14: "parent 8:4" \
+			check_all_offloaded
+		log_test "root$tbfpfx-ETS-{RED,TBF} offloaded"
+
+		RET=0
+		with_$cont 8: "$parent" \
+			with_red 81: "parent 8:1" \
+				with_tbf 811: "parent 81:1" \
+			with_tbf 84: "parent 8:4" \
+				with_red 841: "parent 84:1" \
+			check_all_offloaded
+		log_test "root$tbfpfx-ETS-{RED-TBF,TBF-RED} offloaded"
+
+		RET=0
+		with_$cont 8: "$parent" \
+			with_red 81: "parent 8:1" \
+				with_tbf 811: "parent 81:1" \
+					with_bfifo 8111: "parent 811:1" \
+			with_tbf 82: "parent 8:2" \
+				with_red 821: "parent 82:1" \
+					with_bfifo 8211: "parent 821:1" \
+			check_all_offloaded
+		log_test "root$tbfpfx-ETS-{RED-TBF-bFIFO,TBF-RED-bFIFO} offloaded"
+	done
+}
+
+test_etsprio()
+{
+	do_test_etsprio root ""
+}
+
+cleanup()
+{
+	tc qdisc del dev $h1 root &>/dev/null
+}
+
+trap cleanup EXIT
+h1=${NETIFS[p1]}
+tests_run
+
+exit $EXIT_STATUS
-- 
cgit v1.2.3


From b8f49dce799f0c177ee6a56b3fd67e7fdc6e68c2 Mon Sep 17 00:00:00 2001
From: Wan Jiabing <wanjiabing@vivo.com>
Date: Tue, 12 Oct 2021 10:32:30 +0800
Subject: selftests/bpf: Remove duplicated include in cgroup_helpers

Fix following checkincludes.pl warning:
./scripts/checkincludes.pl tools/testing/selftests/bpf/cgroup_helpers.c
tools/testing/selftests/bpf/cgroup_helpers.c: unistd.h is included more
than once.

Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20211012023231.19911-1-wanjiabing@vivo.com
---
 tools/testing/selftests/bpf/cgroup_helpers.c | 1 -
 1 file changed, 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/cgroup_helpers.c b/tools/testing/selftests/bpf/cgroup_helpers.c
index 8fcd44841bb2..9d59c3990ca8 100644
--- a/tools/testing/selftests/bpf/cgroup_helpers.c
+++ b/tools/testing/selftests/bpf/cgroup_helpers.c
@@ -11,7 +11,6 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <ftw.h>
-#include <unistd.h>
 
 #include "cgroup_helpers.h"
 
-- 
cgit v1.2.3


From b16d12f3900283e00aded9131ba1e9b2880513c3 Mon Sep 17 00:00:00 2001
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: Wed, 13 Oct 2021 18:08:59 +0200
Subject: selftests/bpf: Use cpu_number only on arches that have it

cpu_number exists only on Intel and aarch64, so skip the test involing
it on other arches. An alternative would be to replace it with an
exported non-ifdefed primitive-typed percpu variable from the common
code, but there appears to be none.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211013160902.428340-2-iii@linux.ibm.com
---
 tools/testing/selftests/bpf/prog_tests/btf_dump.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dump.c b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
index 87f9df653e4e..12f457b6786d 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_dump.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
@@ -778,8 +778,10 @@ static void test_btf_dump_struct_data(struct btf *btf, struct btf_dump *d,
 static void test_btf_dump_var_data(struct btf *btf, struct btf_dump *d,
 				   char *str)
 {
+#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__)
 	TEST_BTF_DUMP_VAR(btf, d, NULL, str, "cpu_number", int, BTF_F_COMPACT,
 			  "int cpu_number = (int)100", 100);
+#endif
 	TEST_BTF_DUMP_VAR(btf, d, NULL, str, "cpu_profile_flip", int, BTF_F_COMPACT,
 			  "static int cpu_profile_flip = (int)2", 2);
 }
-- 
cgit v1.2.3


From 7960d02dddccc0676d4a1b58e9964718b47388e1 Mon Sep 17 00:00:00 2001
From: Brendan Jackman <jackmanb@google.com>
Date: Fri, 15 Oct 2021 09:33:18 +0000
Subject: selftests/bpf: Some more atomic tests

Some new verifier tests that hit some important gaps in the parameter
space for atomic ops.

There are already exhaustive tests for the JIT part in
lib/test_bpf.c, but these exercise the verifier too.

Signed-off-by: Brendan Jackman <jackmanb@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211015093318.1273686-1-jackmanb@google.com
---
 .../selftests/bpf/verifier/atomic_cmpxchg.c        | 38 +++++++++++++++
 .../testing/selftests/bpf/verifier/atomic_fetch.c  | 57 ++++++++++++++++++++++
 .../selftests/bpf/verifier/atomic_invalid.c        | 25 ++++++++++
 3 files changed, 120 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/verifier/atomic_fetch.c
 create mode 100644 tools/testing/selftests/bpf/verifier/atomic_invalid.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/verifier/atomic_cmpxchg.c b/tools/testing/selftests/bpf/verifier/atomic_cmpxchg.c
index 6e52dfc64415..c22dc83a41fd 100644
--- a/tools/testing/selftests/bpf/verifier/atomic_cmpxchg.c
+++ b/tools/testing/selftests/bpf/verifier/atomic_cmpxchg.c
@@ -119,3 +119,41 @@
 	},
 	.result = ACCEPT,
 },
+{
+	"Dest pointer in r0 - fail",
+	.insns = {
+		/* val = 0; */
+		BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
+		/* r0 = &val */
+		BPF_MOV64_REG(BPF_REG_0, BPF_REG_10),
+		/* r0 = atomic_cmpxchg(&val, r0, 1); */
+		BPF_MOV64_IMM(BPF_REG_1, 1),
+		BPF_ATOMIC_OP(BPF_DW, BPF_CMPXCHG, BPF_REG_10, BPF_REG_1, -8),
+		/* if (r0 != 0) exit(1); */
+		BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
+		BPF_MOV64_IMM(BPF_REG_0, 1),
+		BPF_EXIT_INSN(),
+		/* exit(0); */
+		BPF_MOV64_IMM(BPF_REG_0, 0),
+		BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+},
+{
+	"Dest pointer in r0 - succeed",
+	.insns = {
+		/* r0 = &val */
+		BPF_MOV64_REG(BPF_REG_0, BPF_REG_10),
+		/* val = r0; */
+		BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_0, -8),
+		/* r0 = atomic_cmpxchg(&val, r0, 0); */
+		BPF_MOV64_IMM(BPF_REG_1, 0),
+		BPF_ATOMIC_OP(BPF_DW, BPF_CMPXCHG, BPF_REG_10, BPF_REG_1, -8),
+		/* r1 = *r0 */
+		BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, -8),
+		/* exit(0); */
+		BPF_MOV64_IMM(BPF_REG_0, 0),
+		BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+},
diff --git a/tools/testing/selftests/bpf/verifier/atomic_fetch.c b/tools/testing/selftests/bpf/verifier/atomic_fetch.c
new file mode 100644
index 000000000000..3bc9ff7a860b
--- /dev/null
+++ b/tools/testing/selftests/bpf/verifier/atomic_fetch.c
@@ -0,0 +1,57 @@
+#define __ATOMIC_FETCH_OP_TEST(src_reg, dst_reg, operand1, op, operand2, expect) \
+	{								\
+		"atomic fetch " #op ", src=" #dst_reg " dst=" #dst_reg,	\
+		.insns = {						\
+			/* u64 val = operan1; */			\
+			BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, operand1),	\
+			/* u64 old = atomic_fetch_add(&val, operand2); */ \
+			BPF_MOV64_REG(dst_reg, BPF_REG_10),		\
+			BPF_MOV64_IMM(src_reg, operand2),		\
+			BPF_ATOMIC_OP(BPF_DW, op,			\
+				      dst_reg, src_reg, -8),		\
+			/* if (old != operand1) exit(1); */		\
+			BPF_JMP_IMM(BPF_JEQ, src_reg, operand1, 2),	\
+			BPF_MOV64_IMM(BPF_REG_0, 1),			\
+			BPF_EXIT_INSN(),				\
+			/* if (val != result) exit (2); */		\
+			BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_10, -8),	\
+			BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, expect, 2),	\
+			BPF_MOV64_IMM(BPF_REG_0, 2),			\
+			BPF_EXIT_INSN(),				\
+			/* exit(0); */					\
+			BPF_MOV64_IMM(BPF_REG_0, 0),			\
+			BPF_EXIT_INSN(),				\
+		},							\
+		.result = ACCEPT,					\
+	}
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_2, 1, BPF_ADD | BPF_FETCH, 2, 3),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_0, BPF_REG_1, 1, BPF_ADD | BPF_FETCH, 2, 3),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_0, 1, BPF_ADD | BPF_FETCH, 2, 3),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_2, BPF_REG_3, 1, BPF_ADD | BPF_FETCH, 2, 3),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_4, BPF_REG_5, 1, BPF_ADD | BPF_FETCH, 2, 3),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_9, BPF_REG_8, 1, BPF_ADD | BPF_FETCH, 2, 3),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_2, 0x010, BPF_AND | BPF_FETCH, 0x011, 0x010),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_0, BPF_REG_1, 0x010, BPF_AND | BPF_FETCH, 0x011, 0x010),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_0, 0x010, BPF_AND | BPF_FETCH, 0x011, 0x010),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_2, BPF_REG_3, 0x010, BPF_AND | BPF_FETCH, 0x011, 0x010),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_4, BPF_REG_5, 0x010, BPF_AND | BPF_FETCH, 0x011, 0x010),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_9, BPF_REG_8, 0x010, BPF_AND | BPF_FETCH, 0x011, 0x010),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_2, 0x010, BPF_OR | BPF_FETCH, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_0, BPF_REG_1, 0x010, BPF_OR | BPF_FETCH, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_0, 0x010, BPF_OR | BPF_FETCH, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_2, BPF_REG_3, 0x010, BPF_OR | BPF_FETCH, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_4, BPF_REG_5, 0x010, BPF_OR | BPF_FETCH, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_9, BPF_REG_8, 0x010, BPF_OR | BPF_FETCH, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_2, 0x010, BPF_XOR | BPF_FETCH, 0x011, 0x001),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_0, BPF_REG_1, 0x010, BPF_XOR | BPF_FETCH, 0x011, 0x001),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_0, 0x010, BPF_XOR | BPF_FETCH, 0x011, 0x001),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_2, BPF_REG_3, 0x010, BPF_XOR | BPF_FETCH, 0x011, 0x001),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_4, BPF_REG_5, 0x010, BPF_XOR | BPF_FETCH, 0x011, 0x001),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_9, BPF_REG_8, 0x010, BPF_XOR | BPF_FETCH, 0x011, 0x001),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_2, 0x010, BPF_XCHG, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_0, BPF_REG_1, 0x010, BPF_XCHG, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_1, BPF_REG_0, 0x010, BPF_XCHG, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_2, BPF_REG_3, 0x010, BPF_XCHG, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_4, BPF_REG_5, 0x010, BPF_XCHG, 0x011, 0x011),
+__ATOMIC_FETCH_OP_TEST(BPF_REG_9, BPF_REG_8, 0x010, BPF_XCHG, 0x011, 0x011),
+#undef __ATOMIC_FETCH_OP_TEST
diff --git a/tools/testing/selftests/bpf/verifier/atomic_invalid.c b/tools/testing/selftests/bpf/verifier/atomic_invalid.c
new file mode 100644
index 000000000000..39272720b2f6
--- /dev/null
+++ b/tools/testing/selftests/bpf/verifier/atomic_invalid.c
@@ -0,0 +1,25 @@
+#define __INVALID_ATOMIC_ACCESS_TEST(op)					\
+	{								\
+		"atomic " #op " access through non-pointer ",			\
+		.insns = {						\
+			BPF_MOV64_IMM(BPF_REG_0, 1),			\
+			BPF_MOV64_IMM(BPF_REG_1, 0),			\
+			BPF_ATOMIC_OP(BPF_DW, op, BPF_REG_1, BPF_REG_0, -8), \
+			BPF_MOV64_IMM(BPF_REG_0, 0),			\
+			BPF_EXIT_INSN(),				\
+		},							\
+		.result = REJECT,					\
+		.errstr = "R1 invalid mem access 'inv'"			\
+	}
+__INVALID_ATOMIC_ACCESS_TEST(BPF_ADD),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_ADD | BPF_FETCH),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_ADD),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_ADD | BPF_FETCH),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_AND),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_AND | BPF_FETCH),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_OR),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_OR | BPF_FETCH),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_XOR),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_XOR | BPF_FETCH),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_XCHG),
+__INVALID_ATOMIC_ACCESS_TEST(BPF_CMPXCHG),
-- 
cgit v1.2.3


From b6c4e71516099be676ebd897ea440ce2dddca6d1 Mon Sep 17 00:00:00 2001
From: Hengqi Chen <hengqi.chen@gmail.com>
Date: Thu, 21 Oct 2021 21:47:52 +0800
Subject: selftests/bpf: Test bpf_skc_to_unix_sock() helper

Add a new test which triggers unix_listen kernel function
to test bpf_skc_to_unix_sock helper.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211021134752.1223426-3-hengqi.chen@gmail.com
---
 .../selftests/bpf/prog_tests/skc_to_unix_sock.c    | 54 ++++++++++++++++++++++
 .../selftests/bpf/progs/test_skc_to_unix_sock.c    | 40 ++++++++++++++++
 2 files changed, 94 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/skc_to_unix_sock.c
 create mode 100644 tools/testing/selftests/bpf/progs/test_skc_to_unix_sock.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/skc_to_unix_sock.c b/tools/testing/selftests/bpf/prog_tests/skc_to_unix_sock.c
new file mode 100644
index 000000000000..3eefdfed1db9
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/skc_to_unix_sock.c
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2021 Hengqi Chen */
+
+#include <test_progs.h>
+#include <sys/un.h>
+#include "test_skc_to_unix_sock.skel.h"
+
+static const char *sock_path = "@skc_to_unix_sock";
+
+void test_skc_to_unix_sock(void)
+{
+	struct test_skc_to_unix_sock *skel;
+	struct sockaddr_un sockaddr;
+	int err, sockfd = 0;
+
+	skel = test_skc_to_unix_sock__open();
+	if (!ASSERT_OK_PTR(skel, "could not open BPF object"))
+		return;
+
+	skel->rodata->my_pid = getpid();
+
+	err = test_skc_to_unix_sock__load(skel);
+	if (!ASSERT_OK(err, "could not load BPF object"))
+		goto cleanup;
+
+	err = test_skc_to_unix_sock__attach(skel);
+	if (!ASSERT_OK(err, "could not attach BPF object"))
+		goto cleanup;
+
+	/* trigger unix_listen */
+	sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
+	if (!ASSERT_GT(sockfd, 0, "socket failed"))
+		goto cleanup;
+
+	memset(&sockaddr, 0, sizeof(sockaddr));
+	sockaddr.sun_family = AF_UNIX;
+	strncpy(sockaddr.sun_path, sock_path, strlen(sock_path));
+	sockaddr.sun_path[0] = '\0';
+
+	err = bind(sockfd, (struct sockaddr *)&sockaddr, sizeof(sockaddr));
+	if (!ASSERT_OK(err, "bind failed"))
+		goto cleanup;
+
+	err = listen(sockfd, 1);
+	if (!ASSERT_OK(err, "listen failed"))
+		goto cleanup;
+
+	ASSERT_EQ(strcmp(skel->bss->path, sock_path), 0, "bpf_skc_to_unix_sock failed");
+
+cleanup:
+	if (sockfd)
+		close(sockfd);
+	test_skc_to_unix_sock__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/progs/test_skc_to_unix_sock.c b/tools/testing/selftests/bpf/progs/test_skc_to_unix_sock.c
new file mode 100644
index 000000000000..a408ec95cba4
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_skc_to_unix_sock.c
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2021 Hengqi Chen */
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include "bpf_tracing_net.h"
+
+const volatile pid_t my_pid = 0;
+char path[256] = {};
+
+SEC("fentry/unix_listen")
+int BPF_PROG(unix_listen, struct socket *sock, int backlog)
+{
+	pid_t pid = bpf_get_current_pid_tgid() >> 32;
+	struct unix_sock *unix_sk;
+	int i, len;
+
+	if (pid != my_pid)
+		return 0;
+
+	unix_sk = (struct unix_sock *)bpf_skc_to_unix_sock(sock->sk);
+	if (!unix_sk)
+		return 0;
+
+	if (!UNIX_ABSTRACT(unix_sk))
+		return 0;
+
+	len = unix_sk->addr->len - sizeof(short);
+	path[0] = '@';
+	for (i = 1; i < len; i++) {
+		if (i >= sizeof(struct sockaddr_un))
+			break;
+
+		path[i] = unix_sk->addr->name->sun_path[i];
+	}
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";
-- 
cgit v1.2.3


From e1b9023fc7ab0dcfeefe9f0a14772ad7a1c37b5b Mon Sep 17 00:00:00 2001
From: Dave Marchevsky <davemarchevsky@fb.com>
Date: Wed, 20 Oct 2021 00:48:18 -0700
Subject: selftests/bpf: Add verif_stats test

verified_insns field was added to response of bpf_obj_get_info_by_fd
call on a prog. Confirm that it's being populated by loading a simple
program and asking for its info.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211020074818.1017682-3-davemarchevsky@fb.com
---
 .../testing/selftests/bpf/prog_tests/verif_stats.c | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/verif_stats.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/verif_stats.c b/tools/testing/selftests/bpf/prog_tests/verif_stats.c
new file mode 100644
index 000000000000..b4bae1340cf1
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/verif_stats.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include <test_progs.h>
+
+#include "trace_vprintk.lskel.h"
+
+void test_verif_stats(void)
+{
+	__u32 len = sizeof(struct bpf_prog_info);
+	struct bpf_prog_info info = {};
+	struct trace_vprintk *skel;
+	int err;
+
+	skel = trace_vprintk__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "trace_vprintk__open_and_load"))
+		goto cleanup;
+
+	err = bpf_obj_get_info_by_fd(skel->progs.sys_enter.prog_fd, &info, &len);
+	if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd"))
+		goto cleanup;
+
+	if (!ASSERT_GT(info.verified_insns, 0, "verified_insns"))
+		goto cleanup;
+
+cleanup:
+	trace_vprintk__destroy(skel);
+}
-- 
cgit v1.2.3


From d4121376ac7a9c81a696d7558789b2f29ef3574e Mon Sep 17 00:00:00 2001
From: Jiri Olsa <jolsa@redhat.com>
Date: Thu, 21 Oct 2021 13:41:30 +0200
Subject: selftests/bpf: Fix perf_buffer test on system with offline cpus

The perf_buffer fails on system with offline cpus:

  # test_progs -t perf_buffer
  test_perf_buffer:PASS:nr_cpus 0 nsec
  test_perf_buffer:PASS:nr_on_cpus 0 nsec
  test_perf_buffer:PASS:skel_load 0 nsec
  test_perf_buffer:PASS:attach_kprobe 0 nsec
  test_perf_buffer:PASS:perf_buf__new 0 nsec
  test_perf_buffer:PASS:epoll_fd 0 nsec
  skipping offline CPU #24
  skipping offline CPU #25
  skipping offline CPU #26
  skipping offline CPU #27
  skipping offline CPU #28
  skipping offline CPU #29
  skipping offline CPU #30
  skipping offline CPU #31
  test_perf_buffer:PASS:perf_buffer__poll 0 nsec
  test_perf_buffer:PASS:seen_cpu_cnt 0 nsec
  test_perf_buffer:FAIL:buf_cnt got 24, expected 32
  Summary: 0/0 PASSED, 0 SKIPPED, 1 FAILED

Changing the test to check online cpus instead of possible.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20211021114132.8196-2-jolsa@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/perf_buffer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
index 6979aff4aab2..877600392851 100644
--- a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
+++ b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
@@ -107,8 +107,8 @@ void serial_test_perf_buffer(void)
 		  "expect %d, seen %d\n", nr_on_cpus, CPU_COUNT(&cpu_seen)))
 		goto out_free_pb;
 
-	if (CHECK(perf_buffer__buffer_cnt(pb) != nr_cpus, "buf_cnt",
-		  "got %zu, expected %d\n", perf_buffer__buffer_cnt(pb), nr_cpus))
+	if (CHECK(perf_buffer__buffer_cnt(pb) != nr_on_cpus, "buf_cnt",
+		  "got %zu, expected %d\n", perf_buffer__buffer_cnt(pb), nr_on_cpus))
 		goto out_close;
 
 	for (i = 0; i < nr_cpus; i++) {
-- 
cgit v1.2.3


From aa274f98b269b2babf37b6308f8a1a009ca4fc41 Mon Sep 17 00:00:00 2001
From: Jiri Olsa <jolsa@redhat.com>
Date: Thu, 21 Oct 2021 13:41:31 +0200
Subject: selftests/bpf: Fix possible/online index mismatch in perf_buffer test

The perf_buffer fails on system with offline cpus:

  # test_progs -t perf_buffer
  serial_test_perf_buffer:PASS:nr_cpus 0 nsec
  serial_test_perf_buffer:PASS:nr_on_cpus 0 nsec
  serial_test_perf_buffer:PASS:skel_load 0 nsec
  serial_test_perf_buffer:PASS:attach_kprobe 0 nsec
  serial_test_perf_buffer:PASS:perf_buf__new 0 nsec
  serial_test_perf_buffer:PASS:epoll_fd 0 nsec
  skipping offline CPU #4
  serial_test_perf_buffer:PASS:perf_buffer__poll 0 nsec
  serial_test_perf_buffer:PASS:seen_cpu_cnt 0 nsec
  serial_test_perf_buffer:PASS:buf_cnt 0 nsec
  ...
  serial_test_perf_buffer:PASS:fd_check 0 nsec
  serial_test_perf_buffer:PASS:drain_buf 0 nsec
  serial_test_perf_buffer:PASS:consume_buf 0 nsec
  serial_test_perf_buffer:FAIL:cpu_seen cpu 5 not seen
  #88 perf_buffer:FAIL
  Summary: 0/0 PASSED, 0 SKIPPED, 1 FAILED

If the offline cpu is from the middle of the possible set,
we get mismatch with possible and online cpu buffers.

The perf buffer test calls perf_buffer__consume_buffer for
all 'possible' cpus, but the library holds only 'online'
cpu buffers and perf_buffer__consume_buffer returns them
based on index.

Adding extra (online) index to keep track of online buffers,
we need the original (possible) index to trigger trace on
proper cpu.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20211021114132.8196-3-jolsa@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/perf_buffer.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
index 877600392851..0b0cd045979b 100644
--- a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
+++ b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
@@ -45,7 +45,7 @@ int trigger_on_cpu(int cpu)
 
 void serial_test_perf_buffer(void)
 {
-	int err, on_len, nr_on_cpus = 0, nr_cpus, i;
+	int err, on_len, nr_on_cpus = 0, nr_cpus, i, j;
 	struct perf_buffer_opts pb_opts = {};
 	struct test_perf_buffer *skel;
 	cpu_set_t cpu_seen;
@@ -111,15 +111,15 @@ void serial_test_perf_buffer(void)
 		  "got %zu, expected %d\n", perf_buffer__buffer_cnt(pb), nr_on_cpus))
 		goto out_close;
 
-	for (i = 0; i < nr_cpus; i++) {
+	for (i = 0, j = 0; i < nr_cpus; i++) {
 		if (i >= on_len || !online[i])
 			continue;
 
-		fd = perf_buffer__buffer_fd(pb, i);
+		fd = perf_buffer__buffer_fd(pb, j);
 		CHECK(fd < 0 || last_fd == fd, "fd_check", "last fd %d == fd %d\n", last_fd, fd);
 		last_fd = fd;
 
-		err = perf_buffer__consume_buffer(pb, i);
+		err = perf_buffer__consume_buffer(pb, j);
 		if (CHECK(err, "drain_buf", "cpu %d, err %d\n", i, err))
 			goto out_close;
 
@@ -127,12 +127,13 @@ void serial_test_perf_buffer(void)
 		if (trigger_on_cpu(i))
 			goto out_close;
 
-		err = perf_buffer__consume_buffer(pb, i);
-		if (CHECK(err, "consume_buf", "cpu %d, err %d\n", i, err))
+		err = perf_buffer__consume_buffer(pb, j);
+		if (CHECK(err, "consume_buf", "cpu %d, err %d\n", j, err))
 			goto out_close;
 
 		if (CHECK(!CPU_ISSET(i, &cpu_seen), "cpu_seen", "cpu %d not seen\n", i))
 			goto out_close;
+		j++;
 	}
 
 out_free_pb:
-- 
cgit v1.2.3


From 99d099757ab487e0d317c69541b47aaae0b6c431 Mon Sep 17 00:00:00 2001
From: Jiri Olsa <jolsa@redhat.com>
Date: Thu, 21 Oct 2021 13:41:32 +0200
Subject: selftests/bpf: Use nanosleep tracepoint in perf buffer test

The perf buffer tests triggers trace with nanosleep syscall,
but monitors all syscalls, which results in lot of data in the
buffer and makes it harder to debug. Let's lower the trace
traffic and monitor just nanosleep syscall.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20211021114132.8196-4-jolsa@kernel.org
---
 tools/testing/selftests/bpf/progs/test_perf_buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/test_perf_buffer.c b/tools/testing/selftests/bpf/progs/test_perf_buffer.c
index d37ce29fd393..a08874c5bdf2 100644
--- a/tools/testing/selftests/bpf/progs/test_perf_buffer.c
+++ b/tools/testing/selftests/bpf/progs/test_perf_buffer.c
@@ -12,7 +12,7 @@ struct {
 	__type(value, int);
 } perf_buf_map SEC(".maps");
 
-SEC("tp/raw_syscalls/sys_enter")
+SEC("tp/syscalls/sys_enter_nanosleep")
 int handle_sys_enter(void *ctx)
 {
 	int cpu = bpf_get_smp_processor_id();
-- 
cgit v1.2.3


From 30c5bd96476ced0d3e08372be5186ff7f421d10c Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Wed, 20 Oct 2021 18:44:02 -0700
Subject: selftests/bpf: Demonstrate use of custom .rodata/.data sections

Enhance existing selftests to demonstrate the use of custom
.data/.rodata sections.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211021014404.2635234-9-andrii@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/skeleton.c | 29 +++++++++++++++++++++++
 tools/testing/selftests/bpf/progs/test_skeleton.c | 18 ++++++++++++++
 2 files changed, 47 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/skeleton.c b/tools/testing/selftests/bpf/prog_tests/skeleton.c
index fe1e204a65c6..180afd632f4c 100644
--- a/tools/testing/selftests/bpf/prog_tests/skeleton.c
+++ b/tools/testing/selftests/bpf/prog_tests/skeleton.c
@@ -16,10 +16,13 @@ void test_skeleton(void)
 	struct test_skeleton* skel;
 	struct test_skeleton__bss *bss;
 	struct test_skeleton__data *data;
+	struct test_skeleton__data_dyn *data_dyn;
 	struct test_skeleton__rodata *rodata;
+	struct test_skeleton__rodata_dyn *rodata_dyn;
 	struct test_skeleton__kconfig *kcfg;
 	const void *elf_bytes;
 	size_t elf_bytes_sz = 0;
+	int i;
 
 	skel = test_skeleton__open();
 	if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
@@ -30,7 +33,12 @@ void test_skeleton(void)
 
 	bss = skel->bss;
 	data = skel->data;
+	data_dyn = skel->data_dyn;
 	rodata = skel->rodata;
+	rodata_dyn = skel->rodata_dyn;
+
+	ASSERT_STREQ(bpf_map__name(skel->maps.rodata_dyn), ".rodata.dyn", "rodata_dyn_name");
+	ASSERT_STREQ(bpf_map__name(skel->maps.data_dyn), ".data.dyn", "data_dyn_name");
 
 	/* validate values are pre-initialized correctly */
 	CHECK(data->in1 != -1, "in1", "got %d != exp %d\n", data->in1, -1);
@@ -46,6 +54,12 @@ void test_skeleton(void)
 	CHECK(rodata->in.in6 != 0, "in6", "got %d != exp %d\n", rodata->in.in6, 0);
 	CHECK(bss->out6 != 0, "out6", "got %d != exp %d\n", bss->out6, 0);
 
+	ASSERT_EQ(rodata_dyn->in_dynarr_sz, 0, "in_dynarr_sz");
+	for (i = 0; i < 4; i++)
+		ASSERT_EQ(rodata_dyn->in_dynarr[i], -(i + 1), "in_dynarr");
+	for (i = 0; i < 4; i++)
+		ASSERT_EQ(data_dyn->out_dynarr[i], i + 1, "out_dynarr");
+
 	/* validate we can pre-setup global variables, even in .bss */
 	data->in1 = 10;
 	data->in2 = 11;
@@ -53,6 +67,10 @@ void test_skeleton(void)
 	bss->in4 = 13;
 	rodata->in.in6 = 14;
 
+	rodata_dyn->in_dynarr_sz = 4;
+	for (i = 0; i < 4; i++)
+		rodata_dyn->in_dynarr[i] = i + 10;
+
 	err = test_skeleton__load(skel);
 	if (CHECK(err, "skel_load", "failed to load skeleton: %d\n", err))
 		goto cleanup;
@@ -64,6 +82,10 @@ void test_skeleton(void)
 	CHECK(bss->in4 != 13, "in4", "got %lld != exp %lld\n", bss->in4, 13LL);
 	CHECK(rodata->in.in6 != 14, "in6", "got %d != exp %d\n", rodata->in.in6, 14);
 
+	ASSERT_EQ(rodata_dyn->in_dynarr_sz, 4, "in_dynarr_sz");
+	for (i = 0; i < 4; i++)
+		ASSERT_EQ(rodata_dyn->in_dynarr[i], i + 10, "in_dynarr");
+
 	/* now set new values and attach to get them into outX variables */
 	data->in1 = 1;
 	data->in2 = 2;
@@ -73,6 +95,8 @@ void test_skeleton(void)
 	bss->in5.b = 6;
 	kcfg = skel->kconfig;
 
+	skel->data_read_mostly->read_mostly_var = 123;
+
 	err = test_skeleton__attach(skel);
 	if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
 		goto cleanup;
@@ -93,6 +117,11 @@ void test_skeleton(void)
 	CHECK(bss->kern_ver != kcfg->LINUX_KERNEL_VERSION, "ext2",
 	      "got %d != exp %d\n", bss->kern_ver, kcfg->LINUX_KERNEL_VERSION);
 
+	for (i = 0; i < 4; i++)
+		ASSERT_EQ(data_dyn->out_dynarr[i], i + 10, "out_dynarr");
+
+	ASSERT_EQ(skel->bss->out_mostly_var, 123, "out_mostly_var");
+
 	elf_bytes = test_skeleton__elf_bytes(&elf_bytes_sz);
 	ASSERT_OK_PTR(elf_bytes, "elf_bytes");
 	ASSERT_GE(elf_bytes_sz, 0, "elf_bytes_sz");
diff --git a/tools/testing/selftests/bpf/progs/test_skeleton.c b/tools/testing/selftests/bpf/progs/test_skeleton.c
index 441fa1c552c8..1b1187d2967b 100644
--- a/tools/testing/selftests/bpf/progs/test_skeleton.c
+++ b/tools/testing/selftests/bpf/progs/test_skeleton.c
@@ -5,6 +5,8 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
+#define __read_mostly SEC(".data.read_mostly")
+
 struct s {
 	int a;
 	long long b;
@@ -40,9 +42,20 @@ int kern_ver = 0;
 
 struct s out5 = {};
 
+
+const volatile int in_dynarr_sz SEC(".rodata.dyn");
+const volatile int in_dynarr[4] SEC(".rodata.dyn") = { -1, -2, -3, -4 };
+
+int out_dynarr[4] SEC(".data.dyn") = { 1, 2, 3, 4 };
+
+int read_mostly_var __read_mostly;
+int out_mostly_var;
+
 SEC("raw_tp/sys_enter")
 int handler(const void *ctx)
 {
+	int i;
+
 	out1 = in1;
 	out2 = in2;
 	out3 = in3;
@@ -53,6 +66,11 @@ int handler(const void *ctx)
 	bpf_syscall = CONFIG_BPF_SYSCALL;
 	kern_ver = LINUX_KERNEL_VERSION;
 
+	for (i = 0; i < in_dynarr_sz; i++)
+		out_dynarr[i] = in_dynarr[i];
+
+	out_mostly_var = read_mostly_var;
+
 	return 0;
 }
 
-- 
cgit v1.2.3


From 4f2511e1990985103929ab799fb3ebca81969b77 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Wed, 20 Oct 2021 18:44:04 -0700
Subject: selftests/bpf: Switch to ".bss"/".rodata"/".data" lookups for
 internal maps

Utilize libbpf's feature of allowing to lookup internal maps by their
ELF section names. No need to guess or calculate the exact truncated
prefix taken from the object name.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211021014404.2635234-11-andrii@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/core_autosize.c    |  2 +-
 tools/testing/selftests/bpf/prog_tests/core_reloc.c       |  2 +-
 tools/testing/selftests/bpf/prog_tests/global_data.c      | 11 +++++++++--
 tools/testing/selftests/bpf/prog_tests/global_data_init.c |  2 +-
 tools/testing/selftests/bpf/prog_tests/kfree_skb.c        |  2 +-
 tools/testing/selftests/bpf/prog_tests/rdonly_maps.c      |  2 +-
 6 files changed, 14 insertions(+), 7 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/core_autosize.c b/tools/testing/selftests/bpf/prog_tests/core_autosize.c
index 3d4b2a358d47..2a0dac6394ef 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_autosize.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_autosize.c
@@ -163,7 +163,7 @@ void test_core_autosize(void)
 
 	usleep(1);
 
-	bss_map = bpf_object__find_map_by_name(skel->obj, "test_cor.bss");
+	bss_map = bpf_object__find_map_by_name(skel->obj, ".bss");
 	if (!ASSERT_OK_PTR(bss_map, "bss_map_find"))
 		goto cleanup;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
index 763302e63a29..cc50f8feeca3 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
@@ -867,7 +867,7 @@ void test_core_reloc(void)
 			goto cleanup;
 		}
 
-		data_map = bpf_object__find_map_by_name(obj, "test_cor.bss");
+		data_map = bpf_object__find_map_by_name(obj, ".bss");
 		if (CHECK(!data_map, "find_data_map", "data map not found\n"))
 			goto cleanup;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/global_data.c b/tools/testing/selftests/bpf/prog_tests/global_data.c
index 9efa7e50eab2..afd8639f9a94 100644
--- a/tools/testing/selftests/bpf/prog_tests/global_data.c
+++ b/tools/testing/selftests/bpf/prog_tests/global_data.c
@@ -103,11 +103,18 @@ static void test_global_data_struct(struct bpf_object *obj, __u32 duration)
 static void test_global_data_rdonly(struct bpf_object *obj, __u32 duration)
 {
 	int err = -ENOMEM, map_fd, zero = 0;
-	struct bpf_map *map;
+	struct bpf_map *map, *map2;
 	__u8 *buff;
 
 	map = bpf_object__find_map_by_name(obj, "test_glo.rodata");
-	if (CHECK_FAIL(!map || !bpf_map__is_internal(map)))
+	if (!ASSERT_OK_PTR(map, "map"))
+		return;
+	if (!ASSERT_TRUE(bpf_map__is_internal(map), "is_internal"))
+		return;
+
+	/* ensure we can lookup internal maps by their ELF names */
+	map2 = bpf_object__find_map_by_name(obj, ".rodata");
+	if (!ASSERT_EQ(map, map2, "same_maps"))
 		return;
 
 	map_fd = bpf_map__fd(map);
diff --git a/tools/testing/selftests/bpf/prog_tests/global_data_init.c b/tools/testing/selftests/bpf/prog_tests/global_data_init.c
index ee46b11f1f9a..1db86eab101b 100644
--- a/tools/testing/selftests/bpf/prog_tests/global_data_init.c
+++ b/tools/testing/selftests/bpf/prog_tests/global_data_init.c
@@ -16,7 +16,7 @@ void test_global_data_init(void)
 	if (CHECK_FAIL(err))
 		return;
 
-	map = bpf_object__find_map_by_name(obj, "test_glo.rodata");
+	map = bpf_object__find_map_by_name(obj, ".rodata");
 	if (CHECK_FAIL(!map || !bpf_map__is_internal(map)))
 		goto out;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/kfree_skb.c b/tools/testing/selftests/bpf/prog_tests/kfree_skb.c
index 032a322d51f2..01e51d16c8b8 100644
--- a/tools/testing/selftests/bpf/prog_tests/kfree_skb.c
+++ b/tools/testing/selftests/bpf/prog_tests/kfree_skb.c
@@ -93,7 +93,7 @@ void serial_test_kfree_skb(void)
 	if (CHECK(!fexit, "find_prog", "prog eth_type_trans not found\n"))
 		goto close_prog;
 
-	global_data = bpf_object__find_map_by_name(obj2, "kfree_sk.bss");
+	global_data = bpf_object__find_map_by_name(obj2, ".bss");
 	if (CHECK(!global_data, "find global data", "not found\n"))
 		goto close_prog;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/rdonly_maps.c b/tools/testing/selftests/bpf/prog_tests/rdonly_maps.c
index 5f9eaa3ab584..fd5d2ddfb062 100644
--- a/tools/testing/selftests/bpf/prog_tests/rdonly_maps.c
+++ b/tools/testing/selftests/bpf/prog_tests/rdonly_maps.c
@@ -37,7 +37,7 @@ void test_rdonly_maps(void)
 	if (CHECK(err, "obj_load", "err %d errno %d\n", err, errno))
 		goto cleanup;
 
-	bss_map = bpf_object__find_map_by_name(obj, "test_rdo.bss");
+	bss_map = bpf_object__find_map_by_name(obj, ".bss");
 	if (CHECK(!bss_map, "find_bss_map", "failed\n"))
 		goto cleanup;
 
-- 
cgit v1.2.3


From 57385ae31ff0ffa6e9c9ae39206740efdc7f5972 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Fri, 22 Oct 2021 13:13:42 -0700
Subject: selftests/bpf: Make perf_buffer selftests work on 4.9 kernel again

Recent change to use tp/syscalls/sys_enter_nanosleep for perf_buffer
selftests causes this selftest to fail on 4.9 kernel in libbpf CI ([0]):

  libbpf: prog 'handle_sys_enter': failed to attach to perf_event FD 6: Invalid argument
  libbpf: prog 'handle_sys_enter': failed to attach to tracepoint 'syscalls/sys_enter_nanosleep': Invalid argument

It's not exactly clear why, because perf_event itself is created for
this tracepoint, but I can't even compile 4.9 kernel locally, so it's
hard to figure this out. If anyone has better luck and would like to
help investigating this, I'd really appreciate this.

For now, unblock CI by switching back to raw_syscalls/sys_enter, but reduce
amount of unnecessary samples emitted by filter by process ID. Use
explicit ARRAY map for that to make it work on 4.9 as well, because
global data isn't yet supported there.

Fixes: aa274f98b269 ("selftests/bpf: Fix possible/online index mismatch in perf_buffer test")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211022201342.3490692-1-andrii@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/perf_buffer.c |  5 +++++
 tools/testing/selftests/bpf/progs/test_perf_buffer.c | 20 ++++++++++++++++++--
 2 files changed, 23 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
index 0b0cd045979b..4e32f3586a75 100644
--- a/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
+++ b/tools/testing/selftests/bpf/prog_tests/perf_buffer.c
@@ -46,6 +46,7 @@ int trigger_on_cpu(int cpu)
 void serial_test_perf_buffer(void)
 {
 	int err, on_len, nr_on_cpus = 0, nr_cpus, i, j;
+	int zero = 0, my_pid = getpid();
 	struct perf_buffer_opts pb_opts = {};
 	struct test_perf_buffer *skel;
 	cpu_set_t cpu_seen;
@@ -71,6 +72,10 @@ void serial_test_perf_buffer(void)
 	if (CHECK(!skel, "skel_load", "skeleton open/load failed\n"))
 		goto out_close;
 
+	err = bpf_map_update_elem(bpf_map__fd(skel->maps.my_pid_map), &zero, &my_pid, 0);
+	if (!ASSERT_OK(err, "my_pid_update"))
+		goto out_close;
+
 	/* attach probe */
 	err = test_perf_buffer__attach(skel);
 	if (CHECK(err, "attach_kprobe", "err %d\n", err))
diff --git a/tools/testing/selftests/bpf/progs/test_perf_buffer.c b/tools/testing/selftests/bpf/progs/test_perf_buffer.c
index a08874c5bdf2..17d5b67744d5 100644
--- a/tools/testing/selftests/bpf/progs/test_perf_buffer.c
+++ b/tools/testing/selftests/bpf/progs/test_perf_buffer.c
@@ -6,20 +6,36 @@
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
 
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__type(key, int);
+	__type(value, int);
+	__uint(max_entries, 1);
+} my_pid_map SEC(".maps");
+
 struct {
 	__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
 	__type(key, int);
 	__type(value, int);
 } perf_buf_map SEC(".maps");
 
-SEC("tp/syscalls/sys_enter_nanosleep")
+SEC("tp/raw_syscalls/sys_enter")
 int handle_sys_enter(void *ctx)
 {
+	int zero = 0, *my_pid, cur_pid;
 	int cpu = bpf_get_smp_processor_id();
 
+	my_pid = bpf_map_lookup_elem(&my_pid_map, &zero);
+	if (!my_pid)
+		return 1;
+
+	cur_pid = bpf_get_current_pid_tgid() >> 32;
+	if (cur_pid != *my_pid)
+		return 1;
+
 	bpf_perf_event_output(ctx, &perf_buf_map, BPF_F_CURRENT_CPU,
 			      &cpu, sizeof(cpu));
-	return 0;
+	return 1;
 }
 
 char _license[] SEC("license") = "GPL";
-- 
cgit v1.2.3


From 487ef148cf17730442444c07a4c56f16578ec73e Mon Sep 17 00:00:00 2001
From: Hengqi Chen <hengqi.chen@gmail.com>
Date: Fri, 22 Oct 2021 21:06:23 +0800
Subject: selftests/bpf: Switch to new btf__type_cnt/btf__raw_data APIs

Replace the calls to btf__get_nr_types/btf__get_raw_data in
selftests with new APIs btf__type_cnt/btf__raw_data. The old
APIs will be deprecated in libbpf v0.7+.

Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211022130623.1548429-6-hengqi.chen@gmail.com
---
 tools/testing/selftests/bpf/btf_helpers.c               |  4 ++--
 tools/testing/selftests/bpf/prog_tests/btf.c            | 10 +++++-----
 tools/testing/selftests/bpf/prog_tests/btf_dump.c       |  8 ++++----
 tools/testing/selftests/bpf/prog_tests/btf_endian.c     | 12 ++++++------
 tools/testing/selftests/bpf/prog_tests/btf_split.c      |  2 +-
 tools/testing/selftests/bpf/prog_tests/core_autosize.c  |  2 +-
 tools/testing/selftests/bpf/prog_tests/core_reloc.c     |  2 +-
 tools/testing/selftests/bpf/prog_tests/resolve_btfids.c |  4 ++--
 8 files changed, 22 insertions(+), 22 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/btf_helpers.c b/tools/testing/selftests/bpf/btf_helpers.c
index 668cfa20bb1b..b5b6b013a245 100644
--- a/tools/testing/selftests/bpf/btf_helpers.c
+++ b/tools/testing/selftests/bpf/btf_helpers.c
@@ -215,7 +215,7 @@ int btf_validate_raw(struct btf *btf, int nr_types, const char *exp_types[])
 	int i;
 	bool ok = true;
 
-	ASSERT_EQ(btf__get_nr_types(btf), nr_types, "btf_nr_types");
+	ASSERT_EQ(btf__type_cnt(btf) - 1, nr_types, "btf_nr_types");
 
 	for (i = 1; i <= nr_types; i++) {
 		if (!ASSERT_STREQ(btf_type_raw_dump(btf, i), exp_types[i - 1], "raw_dump"))
@@ -254,7 +254,7 @@ const char *btf_type_c_dump(const struct btf *btf)
 		return NULL;
 	}
 
-	for (i = 1; i <= btf__get_nr_types(btf); i++) {
+	for (i = 1; i < btf__type_cnt(btf); i++) {
 		err = btf_dump__dump_type(d, i);
 		if (err) {
 			fprintf(stderr, "Failed to dump type [%d]: %d\n", i, err);
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index fa67f25bbef5..557f948f9964 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -7274,8 +7274,8 @@ static void do_test_dedup(unsigned int test_num)
 		goto done;
 	}
 
-	test_btf_data = btf__get_raw_data(test_btf, &test_btf_size);
-	expect_btf_data = btf__get_raw_data(expect_btf, &expect_btf_size);
+	test_btf_data = btf__raw_data(test_btf, &test_btf_size);
+	expect_btf_data = btf__raw_data(expect_btf, &expect_btf_size);
 	if (CHECK(test_btf_size != expect_btf_size,
 		  "test_btf_size:%u != expect_btf_size:%u",
 		  test_btf_size, expect_btf_size)) {
@@ -7329,8 +7329,8 @@ static void do_test_dedup(unsigned int test_num)
 		expect_str_cur += expect_len + 1;
 	}
 
-	test_nr_types = btf__get_nr_types(test_btf);
-	expect_nr_types = btf__get_nr_types(expect_btf);
+	test_nr_types = btf__type_cnt(test_btf);
+	expect_nr_types = btf__type_cnt(expect_btf);
 	if (CHECK(test_nr_types != expect_nr_types,
 		  "test_nr_types:%u != expect_nr_types:%u",
 		  test_nr_types, expect_nr_types)) {
@@ -7338,7 +7338,7 @@ static void do_test_dedup(unsigned int test_num)
 		goto done;
 	}
 
-	for (i = 1; i <= test_nr_types; i++) {
+	for (i = 1; i < test_nr_types; i++) {
 		const struct btf_type *test_type, *expect_type;
 		int test_size, expect_size;
 
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dump.c b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
index 12f457b6786d..3d837a7019fd 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_dump.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
@@ -27,7 +27,7 @@ static struct btf_dump_test_case {
 static int btf_dump_all_types(const struct btf *btf,
 			      const struct btf_dump_opts *opts)
 {
-	size_t type_cnt = btf__get_nr_types(btf);
+	size_t type_cnt = btf__type_cnt(btf);
 	struct btf_dump *d;
 	int err = 0, id;
 
@@ -36,7 +36,7 @@ static int btf_dump_all_types(const struct btf *btf,
 	if (err)
 		return err;
 
-	for (id = 1; id <= type_cnt; id++) {
+	for (id = 1; id < type_cnt; id++) {
 		err = btf_dump__dump_type(d, id);
 		if (err)
 			goto done;
@@ -171,7 +171,7 @@ void test_btf_dump_incremental(void)
 	err = btf__add_field(btf, "x", 2, 0, 0);
 	ASSERT_OK(err, "field_ok");
 
-	for (i = 1; i <= btf__get_nr_types(btf); i++) {
+	for (i = 1; i < btf__type_cnt(btf); i++) {
 		err = btf_dump__dump_type(d, i);
 		ASSERT_OK(err, "dump_type_ok");
 	}
@@ -210,7 +210,7 @@ void test_btf_dump_incremental(void)
 	err = btf__add_field(btf, "s", 3, 32, 0);
 	ASSERT_OK(err, "field_ok");
 
-	for (i = 1; i <= btf__get_nr_types(btf); i++) {
+	for (i = 1; i < btf__type_cnt(btf); i++) {
 		err = btf_dump__dump_type(d, i);
 		ASSERT_OK(err, "dump_type_ok");
 	}
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_endian.c b/tools/testing/selftests/bpf/prog_tests/btf_endian.c
index 8ab5d3e358dd..2653cc482df4 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_endian.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_endian.c
@@ -32,7 +32,7 @@ void test_btf_endian() {
 	ASSERT_EQ(btf__endianness(btf), swap_endian, "endian");
 
 	/* Get raw BTF data in non-native endianness... */
-	raw_data = btf__get_raw_data(btf, &raw_sz);
+	raw_data = btf__raw_data(btf, &raw_sz);
 	if (!ASSERT_OK_PTR(raw_data, "raw_data_inverted"))
 		goto err_out;
 
@@ -42,9 +42,9 @@ void test_btf_endian() {
 		goto err_out;
 
 	ASSERT_EQ(btf__endianness(swap_btf), swap_endian, "endian");
-	ASSERT_EQ(btf__get_nr_types(swap_btf), btf__get_nr_types(btf), "nr_types");
+	ASSERT_EQ(btf__type_cnt(swap_btf), btf__type_cnt(btf), "nr_types");
 
-	swap_raw_data = btf__get_raw_data(swap_btf, &swap_raw_sz);
+	swap_raw_data = btf__raw_data(swap_btf, &swap_raw_sz);
 	if (!ASSERT_OK_PTR(swap_raw_data, "swap_raw_data"))
 		goto err_out;
 
@@ -58,7 +58,7 @@ void test_btf_endian() {
 
 	/* swap it back to native endianness */
 	btf__set_endianness(swap_btf, endian);
-	swap_raw_data = btf__get_raw_data(swap_btf, &swap_raw_sz);
+	swap_raw_data = btf__raw_data(swap_btf, &swap_raw_sz);
 	if (!ASSERT_OK_PTR(swap_raw_data, "swap_raw_data"))
 		goto err_out;
 
@@ -75,7 +75,7 @@ void test_btf_endian() {
 	swap_btf = NULL;
 
 	btf__set_endianness(btf, swap_endian);
-	raw_data = btf__get_raw_data(btf, &raw_sz);
+	raw_data = btf__raw_data(btf, &raw_sz);
 	if (!ASSERT_OK_PTR(raw_data, "raw_data_inverted"))
 		goto err_out;
 
@@ -85,7 +85,7 @@ void test_btf_endian() {
 		goto err_out;
 
 	ASSERT_EQ(btf__endianness(swap_btf), swap_endian, "endian");
-	ASSERT_EQ(btf__get_nr_types(swap_btf), btf__get_nr_types(btf), "nr_types");
+	ASSERT_EQ(btf__type_cnt(swap_btf), btf__type_cnt(btf), "nr_types");
 
 	/* the type should appear as if it was stored in native endianness */
 	t = btf__type_by_id(swap_btf, var_id);
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_split.c b/tools/testing/selftests/bpf/prog_tests/btf_split.c
index ca7c2a91610a..b1ffe61f2aa9 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_split.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_split.c
@@ -72,7 +72,7 @@ void test_btf_split() {
 	d = btf_dump__new(btf2, NULL, &opts, btf_dump_printf);
 	if (!ASSERT_OK_PTR(d, "btf_dump__new"))
 		goto cleanup;
-	for (i = 1; i <= btf__get_nr_types(btf2); i++) {
+	for (i = 1; i < btf__type_cnt(btf2); i++) {
 		err = btf_dump__dump_type(d, i);
 		ASSERT_OK(err, "dump_type_ok");
 	}
diff --git a/tools/testing/selftests/bpf/prog_tests/core_autosize.c b/tools/testing/selftests/bpf/prog_tests/core_autosize.c
index 2a0dac6394ef..1dfe14ff6aa4 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_autosize.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_autosize.c
@@ -112,7 +112,7 @@ void test_core_autosize(void)
 	if (!ASSERT_OK_PTR(f, "btf_fdopen"))
 		goto cleanup;
 
-	raw_data = btf__get_raw_data(btf, &raw_sz);
+	raw_data = btf__raw_data(btf, &raw_sz);
 	if (!ASSERT_OK_PTR(raw_data, "raw_data"))
 		goto cleanup;
 	written = fwrite(raw_data, 1, raw_sz, f);
diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
index cc50f8feeca3..55ec85ba7375 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
@@ -381,7 +381,7 @@ static int setup_type_id_case_local(struct core_reloc_test_case *test)
 	exp->local_anon_void_ptr = -1;
 	exp->local_anon_arr = -1;
 
-	for (i = 1; i <= btf__get_nr_types(local_btf); i++)
+	for (i = 1; i < btf__type_cnt(local_btf); i++)
 	{
 		t = btf__type_by_id(local_btf, i);
 		/* we are interested only in anonymous types */
diff --git a/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c b/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
index f62361306f6d..badda6309fd9 100644
--- a/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
+++ b/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
@@ -106,9 +106,9 @@ static int resolve_symbols(void)
 		  "Failed to load BTF from btf_data.o\n"))
 		return -1;
 
-	nr = btf__get_nr_types(btf);
+	nr = btf__type_cnt(btf);
 
-	for (type_id = 1; type_id <= nr; type_id++) {
+	for (type_id = 1; type_id < nr; type_id++) {
 		if (__resolve_symbol(btf, type_id))
 			break;
 	}
-- 
cgit v1.2.3


From d1321207b176b0a5a8004b371ade5a0d8dec7732 Mon Sep 17 00:00:00 2001
From: Stanislav Fomichev <sdf@google.com>
Date: Thu, 21 Oct 2021 14:48:14 -0700
Subject: selftests/bpf: Fix flow dissector tests

- update custom loader to search by name, not section name
- update bpftool commands to use proper pin path

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211021214814.1236114-4-sdf@google.com
---
 tools/testing/selftests/bpf/flow_dissector_load.c  | 18 +++++++++++-------
 tools/testing/selftests/bpf/flow_dissector_load.h  | 10 ++--------
 tools/testing/selftests/bpf/test_flow_dissector.sh | 10 +++++-----
 3 files changed, 18 insertions(+), 20 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/flow_dissector_load.c b/tools/testing/selftests/bpf/flow_dissector_load.c
index 3fd83b9dc1bf..87fd1aa323a9 100644
--- a/tools/testing/selftests/bpf/flow_dissector_load.c
+++ b/tools/testing/selftests/bpf/flow_dissector_load.c
@@ -17,7 +17,7 @@
 const char *cfg_pin_path = "/sys/fs/bpf/flow_dissector";
 const char *cfg_map_name = "jmp_table";
 bool cfg_attach = true;
-char *cfg_section_name;
+char *cfg_prog_name;
 char *cfg_path_name;
 
 static void load_and_attach_program(void)
@@ -25,7 +25,11 @@ static void load_and_attach_program(void)
 	int prog_fd, ret;
 	struct bpf_object *obj;
 
-	ret = bpf_flow_load(&obj, cfg_path_name, cfg_section_name,
+	ret = libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
+	if (ret)
+		error(1, 0, "failed to enable libbpf strict mode: %d", ret);
+
+	ret = bpf_flow_load(&obj, cfg_path_name, cfg_prog_name,
 			    cfg_map_name, NULL, &prog_fd, NULL);
 	if (ret)
 		error(1, 0, "bpf_flow_load %s", cfg_path_name);
@@ -75,15 +79,15 @@ static void parse_opts(int argc, char **argv)
 			break;
 		case 'p':
 			if (cfg_path_name)
-				error(1, 0, "only one prog name can be given");
+				error(1, 0, "only one path can be given");
 
 			cfg_path_name = optarg;
 			break;
 		case 's':
-			if (cfg_section_name)
-				error(1, 0, "only one section can be given");
+			if (cfg_prog_name)
+				error(1, 0, "only one prog can be given");
 
-			cfg_section_name = optarg;
+			cfg_prog_name = optarg;
 			break;
 		}
 	}
@@ -94,7 +98,7 @@ static void parse_opts(int argc, char **argv)
 	if (cfg_attach && !cfg_path_name)
 		error(1, 0, "must provide a path to the BPF program");
 
-	if (cfg_attach && !cfg_section_name)
+	if (cfg_attach && !cfg_prog_name)
 		error(1, 0, "must provide a section name");
 }
 
diff --git a/tools/testing/selftests/bpf/flow_dissector_load.h b/tools/testing/selftests/bpf/flow_dissector_load.h
index 7290401ec172..9d0acc2fc6cc 100644
--- a/tools/testing/selftests/bpf/flow_dissector_load.h
+++ b/tools/testing/selftests/bpf/flow_dissector_load.h
@@ -7,7 +7,7 @@
 
 static inline int bpf_flow_load(struct bpf_object **obj,
 				const char *path,
-				const char *section_name,
+				const char *prog_name,
 				const char *map_name,
 				const char *keys_map_name,
 				int *prog_fd,
@@ -23,13 +23,7 @@ static inline int bpf_flow_load(struct bpf_object **obj,
 	if (ret)
 		return ret;
 
-	main_prog = NULL;
-	bpf_object__for_each_program(prog, *obj) {
-		if (strcmp(section_name, bpf_program__section_name(prog)) == 0) {
-			main_prog = prog;
-			break;
-		}
-	}
+	main_prog = bpf_object__find_program_by_name(*obj, prog_name);
 	if (!main_prog)
 		return -1;
 
diff --git a/tools/testing/selftests/bpf/test_flow_dissector.sh b/tools/testing/selftests/bpf/test_flow_dissector.sh
index 174b72a64a4c..dbd91221727d 100755
--- a/tools/testing/selftests/bpf/test_flow_dissector.sh
+++ b/tools/testing/selftests/bpf/test_flow_dissector.sh
@@ -26,22 +26,22 @@ if [[ -z $(ip netns identify $$) ]]; then
 			type flow_dissector
 
 		if ! unshare --net $bpftool prog attach pinned \
-			/sys/fs/bpf/flow/flow_dissector flow_dissector; then
+			/sys/fs/bpf/flow/_dissect flow_dissector; then
 			echo "Unexpected unsuccessful attach in namespace" >&2
 			err=1
 		fi
 
-		$bpftool prog attach pinned /sys/fs/bpf/flow/flow_dissector \
+		$bpftool prog attach pinned /sys/fs/bpf/flow/_dissect \
 			flow_dissector
 
 		if unshare --net $bpftool prog attach pinned \
-			/sys/fs/bpf/flow/flow_dissector flow_dissector; then
+			/sys/fs/bpf/flow/_dissect flow_dissector; then
 			echo "Unexpected successful attach in namespace" >&2
 			err=1
 		fi
 
 		if ! $bpftool prog detach pinned \
-			/sys/fs/bpf/flow/flow_dissector flow_dissector; then
+			/sys/fs/bpf/flow/_dissect flow_dissector; then
 			echo "Failed to detach flow dissector" >&2
 			err=1
 		fi
@@ -95,7 +95,7 @@ else
 fi
 
 # Attach BPF program
-./flow_dissector_load -p bpf_flow.o -s flow_dissector
+./flow_dissector_load -p bpf_flow.o -s _dissect
 
 # Setup
 tc qdisc add dev lo ingress
-- 
cgit v1.2.3


From 9d19a12b02bf009fefc3620234b4297e4bd7c5d5 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Thu, 21 Oct 2021 12:56:33 -0700
Subject: selftests/bpf: Add BTF_KIND_DECL_TAG typedef unit tests

Test good and bad variants of typedef BTF_KIND_DECL_TAG encoding.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211021195633.4019472-1-yhs@fb.com
---
 tools/testing/selftests/bpf/prog_tests/btf.c | 36 ++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index 557f948f9964..8257ee0af14d 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -3903,6 +3903,42 @@ static struct btf_raw_test raw_tests[] = {
 	.btf_load_err = true,
 	.err_str = "Invalid component_idx",
 },
+{
+	.descr = "decl_tag test #13, typedef, well-formed",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_TYPEDEF_ENC(NAME_TBD, 1),			/* [2] */
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0t\0tag"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+},
+{
+	.descr = "decl_tag test #14, typedef, invalid component_idx",
+	.raw_types = {
+		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+		BTF_TYPEDEF_ENC(NAME_TBD, 1),			/* [2] */
+		BTF_DECL_TAG_ENC(NAME_TBD, 2, 0),
+		BTF_END_RAW,
+	},
+	BTF_STR_SEC("\0local\0tag"),
+	.map_type = BPF_MAP_TYPE_ARRAY,
+	.map_name = "tag_type_check_btf",
+	.key_size = sizeof(int),
+	.value_size = 4,
+	.key_type_id = 1,
+	.value_type_id = 1,
+	.max_entries = 1,
+	.btf_load_err = true,
+	.err_str = "Invalid component_idx",
+},
 
 }; /* struct btf_raw_test raw_tests[] */
 
-- 
cgit v1.2.3


From 557c8c480401457d885bf7a82221dcc877692aa7 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Thu, 21 Oct 2021 12:56:38 -0700
Subject: selftests/bpf: Test deduplication for BTF_KIND_DECL_TAG typedef

Add unit tests for deduplication of BTF_KIND_DECL_TAG to typedef types.
Also changed a few comments from "tag" to "decl_tag" to match
BTF_KIND_DECL_TAG enum value name.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211021195638.4019770-1-yhs@fb.com
---
 tools/testing/selftests/bpf/prog_tests/btf.c | 47 ++++++++++++++++++++++++----
 1 file changed, 41 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index 8257ee0af14d..ac596cb06e40 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -6877,11 +6877,12 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
 			BTF_FUNC_ENC(NAME_TBD, 12),					/* [13] func */
 			BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),				/* [14] float */
-			BTF_DECL_TAG_ENC(NAME_TBD, 13, -1),				/* [15] tag */
-			BTF_DECL_TAG_ENC(NAME_TBD, 13, 1),				/* [16] tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 13, -1),				/* [15] decl_tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 13, 1),				/* [16] decl_tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 7, -1),				/* [17] decl_tag */
 			BTF_END_RAW,
 		},
-		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P"),
+		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q"),
 	},
 	.expect = {
 		.raw_types = {
@@ -6905,11 +6906,12 @@ const struct btf_dedup_test dedup_tests[] = {
 				BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 8),
 			BTF_FUNC_ENC(NAME_TBD, 12),					/* [13] func */
 			BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),				/* [14] float */
-			BTF_DECL_TAG_ENC(NAME_TBD, 13, -1),				/* [15] tag */
-			BTF_DECL_TAG_ENC(NAME_TBD, 13, 1),				/* [16] tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 13, -1),				/* [15] decl_tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 13, 1),				/* [16] decl_tag */
+			BTF_DECL_TAG_ENC(NAME_TBD, 7, -1),				/* [17] decl_tag */
 			BTF_END_RAW,
 		},
-		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P"),
+		BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q"),
 	},
 	.opts = {
 		.dont_resolve_fwds = false,
@@ -7204,6 +7206,39 @@ const struct btf_dedup_test dedup_tests[] = {
 		.dont_resolve_fwds = false,
 	},
 },
+{
+	.descr = "dedup: typedef tags",
+	.input = {
+		.raw_types = {
+			/* int */
+			BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+			BTF_TYPEDEF_ENC(NAME_NTH(1), 1),		/* [2] */
+			BTF_TYPEDEF_ENC(NAME_NTH(1), 1),		/* [3] */
+			/* tag -> t: tag1, tag2 */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 2, -1),		/* [4] */
+			BTF_DECL_TAG_ENC(NAME_NTH(3), 2, -1),		/* [5] */
+			/* tag -> t: tag1, tag3 */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 3, -1),		/* [6] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1),		/* [7] */
+			BTF_END_RAW,
+		},
+		BTF_STR_SEC("\0t\0tag1\0tag2\0tag3"),
+	},
+	.expect = {
+		.raw_types = {
+			BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),	/* [1] */
+			BTF_TYPEDEF_ENC(NAME_NTH(1), 1),		/* [2] */
+			BTF_DECL_TAG_ENC(NAME_NTH(2), 2, -1),		/* [3] */
+			BTF_DECL_TAG_ENC(NAME_NTH(3), 2, -1),		/* [4] */
+			BTF_DECL_TAG_ENC(NAME_NTH(4), 2, -1),		/* [5] */
+			BTF_END_RAW,
+		},
+		BTF_STR_SEC("\0t\0tag1\0tag2\0tag3"),
+	},
+	.opts = {
+		.dont_resolve_fwds = false,
+	},
+},
 
 };
 
-- 
cgit v1.2.3


From 8c18ea2d2c2913c80d8700c8bc8fe8568b8650a1 Mon Sep 17 00:00:00 2001
From: Yonghong Song <yhs@fb.com>
Date: Thu, 21 Oct 2021 12:56:43 -0700
Subject: selftests/bpf: Add BTF_KIND_DECL_TAG typedef example in tag.c

Change value type in progs/tag.c to a typedef with a btf_decl_tag.
With `bpftool btf dump file tag.o`, we have
  ...
  [14] TYPEDEF 'value_t' type_id=17
  [15] DECL_TAG 'tag1' type_id=14 component_idx=-1
  [16] DECL_TAG 'tag2' type_id=14 component_idx=-1
  [17] STRUCT '(anon)' size=8 vlen=2
        'a' type_id=2 bits_offset=0
        'b' type_id=2 bits_offset=32
  ...

The btf_tag selftest also succeeded:
  $ ./test_progs -t tag
    #21 btf_tag:OK
    Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211021195643.4020315-1-yhs@fb.com
---
 tools/testing/selftests/bpf/progs/tag.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/tag.c b/tools/testing/selftests/bpf/progs/tag.c
index 672d19e7b120..1792f4eda095 100644
--- a/tools/testing/selftests/bpf/progs/tag.c
+++ b/tools/testing/selftests/bpf/progs/tag.c
@@ -24,18 +24,23 @@ struct key_t {
 	int c;
 } __tag1 __tag2;
 
+typedef struct {
+	int a;
+	int b;
+} value_t __tag1 __tag2;
+
 struct {
 	__uint(type, BPF_MAP_TYPE_HASH);
 	__uint(max_entries, 3);
 	__type(key, struct key_t);
-	__type(value, __u64);
+	__type(value, value_t);
 } hashmap1 SEC(".maps");
 
 
 static __noinline int foo(int x __tag1 __tag2) __tag1 __tag2
 {
 	struct key_t key;
-	__u64 val = 1;
+	value_t val = {};
 
 	key.a = key.b = key.c = x;
 	bpf_map_update_elem(&hashmap1, &key, &val, 0);
-- 
cgit v1.2.3


From 016748961ba52d2d952297b0ba8c430c1584adcc Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Fri, 22 Oct 2021 21:43:11 +0300
Subject: selftests: lib: forwarding: allow tests to not require mz and jq

These programs are useful, but not all selftests require them.

Additionally, on embedded boards without package management (things like
buildroot), installing mausezahn or jq is not always as trivial as
downloading a package from the web.

So it is actually a bit annoying to require programs that are not used.
Introduce options that can be set by scripts to not enforce these
dependencies. For compatibility, default to "yes".

Cc: Nikolay Aleksandrov <nikolay@nvidia.com>
Cc: Ido Schimmel <idosch@nvidia.com>
Cc: Guillaume Nault <gnault@redhat.com>
Cc: Po-Hsu Lin <po-hsu.lin@canonical.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/forwarding/lib.sh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 92087d423bcf..520d8b53464b 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -23,6 +23,8 @@ MC_CLI=${MC_CLI:=smcroutectl}
 PING_TIMEOUT=${PING_TIMEOUT:=5}
 WAIT_TIMEOUT=${WAIT_TIMEOUT:=20}
 INTERFACE_TIMEOUT=${INTERFACE_TIMEOUT:=600}
+REQUIRE_JQ=${REQUIRE_JQ:=yes}
+REQUIRE_MZ=${REQUIRE_MZ:=yes}
 
 relative_path="${BASH_SOURCE%/*}"
 if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then
@@ -141,8 +143,12 @@ require_command()
 	fi
 }
 
-require_command jq
-require_command $MZ
+if [[ "$REQUIRE_JQ" = "yes" ]]; then
+	require_command jq
+fi
+if [[ "$REQUIRE_MZ" = "yes" ]]; then
+	require_command $MZ
+fi
 
 if [[ ! -v NUM_NETIFS ]]; then
 	echo "SKIP: importer does not define \"NUM_NETIFS\""
-- 
cgit v1.2.3


From edc90d15850c4812a6c72b004c9b81c37755b997 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Fri, 22 Oct 2021 21:43:12 +0300
Subject: selftests: net: dsa: add a stress test for unlocked FDB operations

This test is a bit strange in that it is perhaps more manual than
others: it does not transmit a clear OK/FAIL verdict, because user space
does not have synchronous feedback from the kernel. If a hardware access
fails, it is in deferred context.

Nonetheless, on sja1105 I have used it successfully to find and solve a
concurrency issue, so it can be used as a starting point for other
driver maintainers too.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 MAINTAINERS                                        |  1 +
 .../drivers/net/dsa/test_bridge_fdb_stress.sh      | 47 ++++++++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh

(limited to 'tools/testing')

diff --git a/MAINTAINERS b/MAINTAINERS
index c5aa142d4b3a..975086c5345d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13056,6 +13056,7 @@ F:	include/linux/dsa/
 F:	include/linux/platform_data/dsa.h
 F:	include/net/dsa.h
 F:	net/dsa/
+F:	tools/testing/selftests/drivers/net/dsa/
 
 NETWORKING [GENERAL]
 M:	"David S. Miller" <davem@davemloft.net>
diff --git a/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh b/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh
new file mode 100755
index 000000000000..dca8be6092b9
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Bridge FDB entries can be offloaded to DSA switches without holding the
+# rtnl_mutex. Traditionally this mutex has conferred drivers implicit
+# serialization, which means their code paths are not well tested in the
+# presence of concurrency.
+# This test creates a background task that stresses the FDB by adding and
+# deleting an entry many times in a row without the rtnl_mutex held.
+# It then tests the driver resistance to concurrency by calling .ndo_fdb_dump
+# (with rtnl_mutex held) from a foreground task.
+# Since either the FDB dump or the additions/removals can fail, but the
+# additions and removals are performed in deferred as opposed to process
+# context, we cannot simply check for user space error codes.
+
+WAIT_TIME=1
+NUM_NETIFS=1
+REQUIRE_JQ="no"
+REQUIRE_MZ="no"
+NETIF_CREATE="no"
+lib_dir=$(dirname $0)/../../../net/forwarding
+source $lib_dir/lib.sh
+
+cleanup() {
+	echo "Cleaning up"
+	kill $pid && wait $pid &> /dev/null
+	ip link del br0
+	echo "Please check kernel log for errors"
+}
+trap 'cleanup' EXIT
+
+eth=${NETIFS[p1]}
+
+ip link del br0 2&>1 >/dev/null || :
+ip link add br0 type bridge && ip link set $eth master br0
+
+(while :; do
+	bridge fdb add 00:01:02:03:04:05 dev $eth master static
+	bridge fdb del 00:01:02:03:04:05 dev $eth master static
+done) &
+pid=$!
+
+for i in $(seq 1 50); do
+	bridge fdb show > /dev/null
+	sleep 3
+	echo "$((${i} * 2))% complete..."
+done
-- 
cgit v1.2.3


From 2d7e73f09fc2f5d968ca375f047718cf25ae2b92 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Mon, 25 Oct 2021 12:59:25 +0100
Subject: Revert "Merge branch 'dsa-rtnl'"

This reverts commit 965e6b262f48257dbdb51b565ecfd84877a0ab5f, reversing
changes made to 4d98bb0d7ec2d0b417df6207b0bafe1868bad9f8.
---
 MAINTAINERS                                        |  1 -
 drivers/net/dsa/b53/b53_common.c                   | 40 ++--------
 drivers/net/dsa/b53/b53_priv.h                     |  1 -
 drivers/net/dsa/lantiq_gswip.c                     | 28 ++-----
 drivers/net/dsa/sja1105/sja1105.h                  |  2 -
 drivers/net/dsa/sja1105/sja1105_dynamic_config.c   | 91 ++++++----------------
 drivers/net/dsa/sja1105/sja1105_main.c             |  1 -
 drivers/net/ethernet/mscc/ocelot.c                 | 53 +++----------
 include/net/dsa.h                                  |  1 -
 include/soc/mscc/ocelot.h                          |  3 -
 net/dsa/dsa2.c                                     |  1 -
 net/dsa/slave.c                                    |  2 +
 net/dsa/switch.c                                   | 76 ++++++------------
 .../drivers/net/dsa/test_bridge_fdb_stress.sh      | 47 -----------
 tools/testing/selftests/net/forwarding/lib.sh      | 10 +--
 15 files changed, 74 insertions(+), 283 deletions(-)
 delete mode 100755 tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh

(limited to 'tools/testing')

diff --git a/MAINTAINERS b/MAINTAINERS
index 975086c5345d..c5aa142d4b3a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13056,7 +13056,6 @@ F:	include/linux/dsa/
 F:	include/linux/platform_data/dsa.h
 F:	include/net/dsa.h
 F:	net/dsa/
-F:	tools/testing/selftests/drivers/net/dsa/
 
 NETWORKING [GENERAL]
 M:	"David S. Miller" <davem@davemloft.net>
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index b0262e69a170..51dfaf817a40 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1544,7 +1544,6 @@ EXPORT_SYMBOL(b53_vlan_del);
 
 /* Address Resolution Logic routines */
 static int b53_arl_op_wait(struct b53_device *dev)
-	__must_hold(&dev->arl_mutex)
 {
 	unsigned int timeout = 10;
 	u8 reg;
@@ -1563,7 +1562,6 @@ static int b53_arl_op_wait(struct b53_device *dev)
 }
 
 static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
-	__must_hold(&dev->arl_mutex)
 {
 	u8 reg;
 
@@ -1587,7 +1585,6 @@ static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
 
 static int b53_arl_read(struct b53_device *dev, u64 mac,
 			u16 vid, struct b53_arl_entry *ent, u8 *idx)
-	__must_hold(&dev->arl_mutex)
 {
 	DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
 	unsigned int i;
@@ -1633,7 +1630,6 @@ static int b53_arl_read(struct b53_device *dev, u64 mac,
 
 static int b53_arl_op(struct b53_device *dev, int op, int port,
 		      const unsigned char *addr, u16 vid, bool is_valid)
-	__must_hold(&dev->arl_mutex)
 {
 	struct b53_arl_entry ent;
 	u32 fwd_entry;
@@ -1711,7 +1707,6 @@ int b53_fdb_add(struct dsa_switch *ds, int port,
 		const unsigned char *addr, u16 vid)
 {
 	struct b53_device *priv = ds->priv;
-	int ret;
 
 	/* 5325 and 5365 require some more massaging, but could
 	 * be supported eventually
@@ -1719,11 +1714,7 @@ int b53_fdb_add(struct dsa_switch *ds, int port,
 	if (is5325(priv) || is5365(priv))
 		return -EOPNOTSUPP;
 
-	mutex_lock(&priv->arl_mutex);
-	ret = b53_arl_op(priv, 0, port, addr, vid, true);
-	mutex_unlock(&priv->arl_mutex);
-
-	return ret;
+	return b53_arl_op(priv, 0, port, addr, vid, true);
 }
 EXPORT_SYMBOL(b53_fdb_add);
 
@@ -1731,18 +1722,12 @@ int b53_fdb_del(struct dsa_switch *ds, int port,
 		const unsigned char *addr, u16 vid)
 {
 	struct b53_device *priv = ds->priv;
-	int ret;
 
-	mutex_lock(&priv->arl_mutex);
-	ret = b53_arl_op(priv, 0, port, addr, vid, false);
-	mutex_unlock(&priv->arl_mutex);
-
-	return ret;
+	return b53_arl_op(priv, 0, port, addr, vid, false);
 }
 EXPORT_SYMBOL(b53_fdb_del);
 
 static int b53_arl_search_wait(struct b53_device *dev)
-	__must_hold(&dev->arl_mutex)
 {
 	unsigned int timeout = 1000;
 	u8 reg;
@@ -1763,7 +1748,6 @@ static int b53_arl_search_wait(struct b53_device *dev)
 
 static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
 			      struct b53_arl_entry *ent)
-	__must_hold(&dev->arl_mutex)
 {
 	u64 mac_vid;
 	u32 fwd_entry;
@@ -1796,8 +1780,6 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 	int ret;
 	u8 reg;
 
-	mutex_lock(&priv->arl_mutex);
-
 	/* Start search operation */
 	reg = ARL_SRCH_STDN;
 	b53_write8(priv, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, reg);
@@ -1805,18 +1787,18 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 	do {
 		ret = b53_arl_search_wait(priv);
 		if (ret)
-			break;
+			return ret;
 
 		b53_arl_search_rd(priv, 0, &results[0]);
 		ret = b53_fdb_copy(port, &results[0], cb, data);
 		if (ret)
-			break;
+			return ret;
 
 		if (priv->num_arl_bins > 2) {
 			b53_arl_search_rd(priv, 1, &results[1]);
 			ret = b53_fdb_copy(port, &results[1], cb, data);
 			if (ret)
-				break;
+				return ret;
 
 			if (!results[0].is_valid && !results[1].is_valid)
 				break;
@@ -1824,8 +1806,6 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 
 	} while (count++ < b53_max_arl_entries(priv) / 2);
 
-	mutex_unlock(&priv->arl_mutex);
-
 	return 0;
 }
 EXPORT_SYMBOL(b53_fdb_dump);
@@ -1834,7 +1814,6 @@ int b53_mdb_add(struct dsa_switch *ds, int port,
 		const struct switchdev_obj_port_mdb *mdb)
 {
 	struct b53_device *priv = ds->priv;
-	int ret;
 
 	/* 5325 and 5365 require some more massaging, but could
 	 * be supported eventually
@@ -1842,11 +1821,7 @@ int b53_mdb_add(struct dsa_switch *ds, int port,
 	if (is5325(priv) || is5365(priv))
 		return -EOPNOTSUPP;
 
-	mutex_lock(&priv->arl_mutex);
-	ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
-	mutex_unlock(&priv->arl_mutex);
-
-	return ret;
+	return b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, true);
 }
 EXPORT_SYMBOL(b53_mdb_add);
 
@@ -1856,9 +1831,7 @@ int b53_mdb_del(struct dsa_switch *ds, int port,
 	struct b53_device *priv = ds->priv;
 	int ret;
 
-	mutex_lock(&priv->arl_mutex);
 	ret = b53_arl_op(priv, 0, port, mdb->addr, mdb->vid, false);
-	mutex_unlock(&priv->arl_mutex);
 	if (ret)
 		dev_err(ds->dev, "failed to delete MDB entry\n");
 
@@ -2695,7 +2668,6 @@ struct b53_device *b53_switch_alloc(struct device *base,
 
 	mutex_init(&dev->reg_mutex);
 	mutex_init(&dev->stats_mutex);
-	mutex_init(&dev->arl_mutex);
 
 	return dev;
 }
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 579da74ada64..544101e74bca 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -107,7 +107,6 @@ struct b53_device {
 
 	struct mutex reg_mutex;
 	struct mutex stats_mutex;
-	struct mutex arl_mutex;
 	const struct b53_io_ops *ops;
 
 	/* chip specific data */
diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 7056d98d8177..a3e937a371ef 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -276,7 +276,6 @@ struct gswip_priv {
 	int num_gphy_fw;
 	struct gswip_gphy_fw *gphy_fw;
 	u32 port_vlan_filter;
-	struct mutex pce_table_lock;
 };
 
 struct gswip_pce_table_entry {
@@ -524,14 +523,10 @@ static int gswip_pce_table_entry_read(struct gswip_priv *priv,
 	u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSRD :
 					GSWIP_PCE_TBL_CTRL_OPMOD_ADRD;
 
-	mutex_lock(&priv->pce_table_lock);
-
 	err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
 				     GSWIP_PCE_TBL_CTRL_BAS);
-	if (err) {
-		mutex_unlock(&priv->pce_table_lock);
+	if (err)
 		return err;
-	}
 
 	gswip_switch_w(priv, tbl->index, GSWIP_PCE_TBL_ADDR);
 	gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
@@ -541,10 +536,8 @@ static int gswip_pce_table_entry_read(struct gswip_priv *priv,
 
 	err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
 				     GSWIP_PCE_TBL_CTRL_BAS);
-	if (err) {
-		mutex_unlock(&priv->pce_table_lock);
+	if (err)
 		return err;
-	}
 
 	for (i = 0; i < ARRAY_SIZE(tbl->key); i++)
 		tbl->key[i] = gswip_switch_r(priv, GSWIP_PCE_TBL_KEY(i));
@@ -560,8 +553,6 @@ static int gswip_pce_table_entry_read(struct gswip_priv *priv,
 	tbl->valid = !!(crtl & GSWIP_PCE_TBL_CTRL_VLD);
 	tbl->gmap = (crtl & GSWIP_PCE_TBL_CTRL_GMAP_MASK) >> 7;
 
-	mutex_unlock(&priv->pce_table_lock);
-
 	return 0;
 }
 
@@ -574,14 +565,10 @@ static int gswip_pce_table_entry_write(struct gswip_priv *priv,
 	u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSWR :
 					GSWIP_PCE_TBL_CTRL_OPMOD_ADWR;
 
-	mutex_lock(&priv->pce_table_lock);
-
 	err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
 				     GSWIP_PCE_TBL_CTRL_BAS);
-	if (err) {
-		mutex_unlock(&priv->pce_table_lock);
+	if (err)
 		return err;
-	}
 
 	gswip_switch_w(priv, tbl->index, GSWIP_PCE_TBL_ADDR);
 	gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
@@ -613,12 +600,8 @@ static int gswip_pce_table_entry_write(struct gswip_priv *priv,
 	crtl |= GSWIP_PCE_TBL_CTRL_BAS;
 	gswip_switch_w(priv, crtl, GSWIP_PCE_TBL_CTRL);
 
-	err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
-				     GSWIP_PCE_TBL_CTRL_BAS);
-
-	mutex_unlock(&priv->pce_table_lock);
-
-	return err;
+	return gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
+				      GSWIP_PCE_TBL_CTRL_BAS);
 }
 
 /* Add the LAN port into a bridge with the CPU port by
@@ -2121,7 +2104,6 @@ static int gswip_probe(struct platform_device *pdev)
 	priv->ds->priv = priv;
 	priv->ds->ops = priv->hw_info->ops;
 	priv->dev = dev;
-	mutex_init(&priv->pce_table_lock);
 	version = gswip_switch_r(priv, GSWIP_VERSION);
 
 	np = dev->of_node;
diff --git a/drivers/net/dsa/sja1105/sja1105.h b/drivers/net/dsa/sja1105/sja1105.h
index 21dba16af097..808419f3b808 100644
--- a/drivers/net/dsa/sja1105/sja1105.h
+++ b/drivers/net/dsa/sja1105/sja1105.h
@@ -261,8 +261,6 @@ struct sja1105_private {
 	 * the switch doesn't confuse them with one another.
 	 */
 	struct mutex mgmt_lock;
-	/* Serializes access to the dynamic config interface */
-	struct mutex dynamic_config_lock;
 	struct devlink_region **regions;
 	struct sja1105_cbs_entry *cbs;
 	struct mii_bus *mdio_base_t1;
diff --git a/drivers/net/dsa/sja1105/sja1105_dynamic_config.c b/drivers/net/dsa/sja1105/sja1105_dynamic_config.c
index 7729d3f8b7f5..f2049f52833c 100644
--- a/drivers/net/dsa/sja1105/sja1105_dynamic_config.c
+++ b/drivers/net/dsa/sja1105/sja1105_dynamic_config.c
@@ -1170,56 +1170,6 @@ const struct sja1105_dynamic_table_ops sja1110_dyn_ops[BLK_IDX_MAX_DYN] = {
 	},
 };
 
-#define SJA1105_DYNAMIC_CONFIG_SLEEP_US		10
-#define SJA1105_DYNAMIC_CONFIG_TIMEOUT_US	100000
-
-static int
-sja1105_dynamic_config_poll_valid(struct sja1105_private *priv,
-				  struct sja1105_dyn_cmd *cmd,
-				  const struct sja1105_dynamic_table_ops *ops)
-{
-	u8 packed_buf[SJA1105_MAX_DYN_CMD_SIZE] = {};
-	int rc;
-
-	/* We don't _need_ to read the full entry, just the command area which
-	 * is a fixed SJA1105_SIZE_DYN_CMD. But our cmd_packing() API expects a
-	 * buffer that contains the full entry too. Additionally, our API
-	 * doesn't really know how many bytes into the buffer does the command
-	 * area really begin. So just read back the whole entry.
-	 */
-	rc = sja1105_xfer_buf(priv, SPI_READ, ops->addr, packed_buf,
-			      ops->packed_size);
-	if (rc)
-		return rc;
-
-	/* Unpack the command structure, and return it to the caller in case it
-	 * needs to perform further checks on it (VALIDENT).
-	 */
-	memset(cmd, 0, sizeof(*cmd));
-	ops->cmd_packing(packed_buf, cmd, UNPACK);
-
-	/* Hardware hasn't cleared VALID => still working on it */
-	return cmd->valid ? -EAGAIN : 0;
-}
-
-/* Poll the dynamic config entry's control area until the hardware has
- * cleared the VALID bit, which means we have confirmation that it has
- * finished processing the command.
- */
-static int
-sja1105_dynamic_config_wait_complete(struct sja1105_private *priv,
-				     struct sja1105_dyn_cmd *cmd,
-				     const struct sja1105_dynamic_table_ops *ops)
-{
-	int rc;
-
-	return read_poll_timeout(sja1105_dynamic_config_poll_valid,
-				 rc, rc != -EAGAIN,
-				 SJA1105_DYNAMIC_CONFIG_SLEEP_US,
-				 SJA1105_DYNAMIC_CONFIG_TIMEOUT_US,
-				 false, priv, cmd, ops);
-}
-
 /* Provides read access to the settings through the dynamic interface
  * of the switch.
  * @blk_idx	is used as key to select from the sja1105_dynamic_table_ops.
@@ -1246,6 +1196,7 @@ int sja1105_dynamic_config_read(struct sja1105_private *priv,
 	struct sja1105_dyn_cmd cmd = {0};
 	/* SPI payload buffer */
 	u8 packed_buf[SJA1105_MAX_DYN_CMD_SIZE] = {0};
+	int retries = 3;
 	int rc;
 
 	if (blk_idx >= BLK_IDX_MAX_DYN)
@@ -1283,21 +1234,33 @@ int sja1105_dynamic_config_read(struct sja1105_private *priv,
 		ops->entry_packing(packed_buf, entry, PACK);
 
 	/* Send SPI write operation: read config table entry */
-	mutex_lock(&priv->dynamic_config_lock);
 	rc = sja1105_xfer_buf(priv, SPI_WRITE, ops->addr, packed_buf,
 			      ops->packed_size);
-	if (rc < 0) {
-		mutex_unlock(&priv->dynamic_config_lock);
-		return rc;
-	}
-
-	rc = sja1105_dynamic_config_wait_complete(priv, &cmd, ops);
-	mutex_unlock(&priv->dynamic_config_lock);
 	if (rc < 0)
 		return rc;
 
-	if (!cmd.valident && !(ops->access & OP_VALID_ANYWAY))
-		return -ENOENT;
+	/* Loop until we have confirmation that hardware has finished
+	 * processing the command and has cleared the VALID field
+	 */
+	do {
+		memset(packed_buf, 0, ops->packed_size);
+
+		/* Retrieve the read operation's result */
+		rc = sja1105_xfer_buf(priv, SPI_READ, ops->addr, packed_buf,
+				      ops->packed_size);
+		if (rc < 0)
+			return rc;
+
+		cmd = (struct sja1105_dyn_cmd) {0};
+		ops->cmd_packing(packed_buf, &cmd, UNPACK);
+
+		if (!cmd.valident && !(ops->access & OP_VALID_ANYWAY))
+			return -ENOENT;
+		cpu_relax();
+	} while (cmd.valid && --retries);
+
+	if (cmd.valid)
+		return -ETIMEDOUT;
 
 	/* Don't dereference possibly NULL pointer - maybe caller
 	 * only wanted to see whether the entry existed or not.
@@ -1353,16 +1316,8 @@ int sja1105_dynamic_config_write(struct sja1105_private *priv,
 		ops->entry_packing(packed_buf, entry, PACK);
 
 	/* Send SPI write operation: read config table entry */
-	mutex_lock(&priv->dynamic_config_lock);
 	rc = sja1105_xfer_buf(priv, SPI_WRITE, ops->addr, packed_buf,
 			      ops->packed_size);
-	if (rc < 0) {
-		mutex_unlock(&priv->dynamic_config_lock);
-		return rc;
-	}
-
-	rc = sja1105_dynamic_config_wait_complete(priv, &cmd, ops);
-	mutex_unlock(&priv->dynamic_config_lock);
 	if (rc < 0)
 		return rc;
 
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index c343effe2e96..ef46ae53ab56 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -3365,7 +3365,6 @@ static int sja1105_probe(struct spi_device *spi)
 	priv->ds = ds;
 
 	mutex_init(&priv->ptp_data.lock);
-	mutex_init(&priv->dynamic_config_lock);
 	mutex_init(&priv->mgmt_lock);
 
 	rc = sja1105_parse_dt(priv);
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 33a4a9a17436..4e5ae687d2e2 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -21,13 +21,11 @@ struct ocelot_mact_entry {
 };
 
 static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot)
-	__must_hold(&ocelot->mact_lock)
 {
 	return ocelot_read(ocelot, ANA_TABLES_MACACCESS);
 }
 
 static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot)
-	__must_hold(&ocelot->mact_lock)
 {
 	u32 val;
 
@@ -41,7 +39,6 @@ static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot)
 static void ocelot_mact_select(struct ocelot *ocelot,
 			       const unsigned char mac[ETH_ALEN],
 			       unsigned int vid)
-	__must_hold(&ocelot->mact_lock)
 {
 	u32 macl = 0, mach = 0;
 
@@ -70,7 +67,6 @@ int ocelot_mact_learn(struct ocelot *ocelot, int port,
 		ANA_TABLES_MACACCESS_ENTRYTYPE(type) |
 		ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN);
 	unsigned int mc_ports;
-	int err;
 
 	/* Set MAC_CPU_COPY if the CPU port is used by a multicast entry */
 	if (type == ENTRYTYPE_MACv4)
@@ -83,28 +79,18 @@ int ocelot_mact_learn(struct ocelot *ocelot, int port,
 	if (mc_ports & BIT(ocelot->num_phys_ports))
 		cmd |= ANA_TABLES_MACACCESS_MAC_CPU_COPY;
 
-	mutex_lock(&ocelot->mact_lock);
-
 	ocelot_mact_select(ocelot, mac, vid);
 
 	/* Issue a write command */
 	ocelot_write(ocelot, cmd, ANA_TABLES_MACACCESS);
 
-	err = ocelot_mact_wait_for_completion(ocelot);
-
-	mutex_unlock(&ocelot->mact_lock);
-
-	return err;
+	return ocelot_mact_wait_for_completion(ocelot);
 }
 EXPORT_SYMBOL(ocelot_mact_learn);
 
 int ocelot_mact_forget(struct ocelot *ocelot,
 		       const unsigned char mac[ETH_ALEN], unsigned int vid)
 {
-	int err;
-
-	mutex_lock(&ocelot->mact_lock);
-
 	ocelot_mact_select(ocelot, mac, vid);
 
 	/* Issue a forget command */
@@ -112,11 +98,7 @@ int ocelot_mact_forget(struct ocelot *ocelot,
 		     ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET),
 		     ANA_TABLES_MACACCESS);
 
-	err = ocelot_mact_wait_for_completion(ocelot);
-
-	mutex_unlock(&ocelot->mact_lock);
-
-	return err;
+	return ocelot_mact_wait_for_completion(ocelot);
 }
 EXPORT_SYMBOL(ocelot_mact_forget);
 
@@ -132,9 +114,7 @@ static void ocelot_mact_init(struct ocelot *ocelot)
 		   | ANA_AGENCTRL_LEARN_IGNORE_VLAN,
 		   ANA_AGENCTRL);
 
-	/* Clear the MAC table. We are not concurrent with anyone, so
-	 * holding &ocelot->mact_lock is pointless.
-	 */
+	/* Clear the MAC table */
 	ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS);
 }
 
@@ -1192,7 +1172,6 @@ EXPORT_SYMBOL(ocelot_port_fdb_do_dump);
 
 static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col,
 			    struct ocelot_mact_entry *entry)
-	__must_hold(&ocelot->mact_lock)
 {
 	u32 val, dst, macl, mach;
 	char mac[ETH_ALEN];
@@ -1241,40 +1220,33 @@ static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col,
 int ocelot_fdb_dump(struct ocelot *ocelot, int port,
 		    dsa_fdb_dump_cb_t *cb, void *data)
 {
-	int err = 0;
 	int i, j;
 
-	/* We could take the lock just around ocelot_mact_read, but doing so
-	 * thousands of times in a row seems rather pointless and inefficient.
-	 */
-	mutex_lock(&ocelot->mact_lock);
-
 	/* Loop through all the mac tables entries. */
 	for (i = 0; i < ocelot->num_mact_rows; i++) {
 		for (j = 0; j < 4; j++) {
 			struct ocelot_mact_entry entry;
 			bool is_static;
+			int ret;
 
-			err = ocelot_mact_read(ocelot, port, i, j, &entry);
+			ret = ocelot_mact_read(ocelot, port, i, j, &entry);
 			/* If the entry is invalid (wrong port, invalid...),
 			 * skip it.
 			 */
-			if (err == -EINVAL)
+			if (ret == -EINVAL)
 				continue;
-			else if (err)
-				break;
+			else if (ret)
+				return ret;
 
 			is_static = (entry.type == ENTRYTYPE_LOCKED);
 
-			err = cb(entry.mac, entry.vid, is_static, data);
-			if (err)
-				break;
+			ret = cb(entry.mac, entry.vid, is_static, data);
+			if (ret)
+				return ret;
 		}
 	}
 
-	mutex_unlock(&ocelot->mact_lock);
-
-	return err;
+	return 0;
 }
 EXPORT_SYMBOL(ocelot_fdb_dump);
 
@@ -2259,7 +2231,6 @@ int ocelot_init(struct ocelot *ocelot)
 
 	mutex_init(&ocelot->stats_lock);
 	mutex_init(&ocelot->ptp_lock);
-	mutex_init(&ocelot->mact_lock);
 	spin_lock_init(&ocelot->ptp_clock_lock);
 	spin_lock_init(&ocelot->ts_id_lock);
 	snprintf(queue_name, sizeof(queue_name), "%s-stats",
diff --git a/include/net/dsa.h b/include/net/dsa.h
index badd214f7470..1cd9c2461f0d 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -287,7 +287,6 @@ struct dsa_port {
 	/* List of MAC addresses that must be forwarded on this port.
 	 * These are only valid on CPU ports and DSA links.
 	 */
-	struct mutex		addr_lists_lock;
 	struct list_head	fdbs;
 	struct list_head	mdbs;
 
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index fef3a36b0210..9b872da0c246 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -675,9 +675,6 @@ struct ocelot {
 	struct delayed_work		stats_work;
 	struct workqueue_struct		*stats_queue;
 
-	/* Lock for serializing access to the MAC table */
-	struct mutex			mact_lock;
-
 	struct workqueue_struct		*owq;
 
 	u8				ptp:1;
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 826957b6442b..f5270114dcb8 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -433,7 +433,6 @@ static int dsa_port_setup(struct dsa_port *dp)
 	if (dp->setup)
 		return 0;
 
-	mutex_init(&dp->addr_lists_lock);
 	INIT_LIST_HEAD(&dp->fdbs);
 	INIT_LIST_HEAD(&dp->mdbs);
 
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index adcfb2cb4e61..9d9fef668eba 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2413,6 +2413,7 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)
 
 	dp = dsa_to_port(ds, switchdev_work->port);
 
+	rtnl_lock();
 	switch (switchdev_work->event) {
 	case SWITCHDEV_FDB_ADD_TO_DEVICE:
 		if (switchdev_work->host_addr)
@@ -2447,6 +2448,7 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)
 
 		break;
 	}
+	rtnl_unlock();
 
 	dev_put(switchdev_work->dev);
 	kfree(switchdev_work);
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 6871e5f9b597..2b1b21bde830 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -215,30 +215,26 @@ static int dsa_port_do_mdb_add(struct dsa_port *dp,
 	struct dsa_switch *ds = dp->ds;
 	struct dsa_mac_addr *a;
 	int port = dp->index;
-	int err = 0;
+	int err;
 
 	/* No need to bother with refcounting for user ports */
 	if (!(dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp)))
 		return ds->ops->port_mdb_add(ds, port, mdb);
 
-	mutex_lock(&dp->addr_lists_lock);
-
 	a = dsa_mac_addr_find(&dp->mdbs, mdb->addr, mdb->vid);
 	if (a) {
 		refcount_inc(&a->refcount);
-		goto out;
+		return 0;
 	}
 
 	a = kzalloc(sizeof(*a), GFP_KERNEL);
-	if (!a) {
-		err = -ENOMEM;
-		goto out;
-	}
+	if (!a)
+		return -ENOMEM;
 
 	err = ds->ops->port_mdb_add(ds, port, mdb);
 	if (err) {
 		kfree(a);
-		goto out;
+		return err;
 	}
 
 	ether_addr_copy(a->addr, mdb->addr);
@@ -246,10 +242,7 @@ static int dsa_port_do_mdb_add(struct dsa_port *dp,
 	refcount_set(&a->refcount, 1);
 	list_add_tail(&a->list, &dp->mdbs);
 
-out:
-	mutex_unlock(&dp->addr_lists_lock);
-
-	return err;
+	return 0;
 }
 
 static int dsa_port_do_mdb_del(struct dsa_port *dp,
@@ -258,36 +251,29 @@ static int dsa_port_do_mdb_del(struct dsa_port *dp,
 	struct dsa_switch *ds = dp->ds;
 	struct dsa_mac_addr *a;
 	int port = dp->index;
-	int err = 0;
+	int err;
 
 	/* No need to bother with refcounting for user ports */
 	if (!(dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp)))
 		return ds->ops->port_mdb_del(ds, port, mdb);
 
-	mutex_lock(&dp->addr_lists_lock);
-
 	a = dsa_mac_addr_find(&dp->mdbs, mdb->addr, mdb->vid);
-	if (!a) {
-		err = -ENOENT;
-		goto out;
-	}
+	if (!a)
+		return -ENOENT;
 
 	if (!refcount_dec_and_test(&a->refcount))
-		goto out;
+		return 0;
 
 	err = ds->ops->port_mdb_del(ds, port, mdb);
 	if (err) {
 		refcount_inc(&a->refcount);
-		goto out;
+		return err;
 	}
 
 	list_del(&a->list);
 	kfree(a);
 
-out:
-	mutex_unlock(&dp->addr_lists_lock);
-
-	return err;
+	return 0;
 }
 
 static int dsa_port_do_fdb_add(struct dsa_port *dp, const unsigned char *addr,
@@ -296,30 +282,26 @@ static int dsa_port_do_fdb_add(struct dsa_port *dp, const unsigned char *addr,
 	struct dsa_switch *ds = dp->ds;
 	struct dsa_mac_addr *a;
 	int port = dp->index;
-	int err = 0;
+	int err;
 
 	/* No need to bother with refcounting for user ports */
 	if (!(dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp)))
 		return ds->ops->port_fdb_add(ds, port, addr, vid);
 
-	mutex_lock(&dp->addr_lists_lock);
-
 	a = dsa_mac_addr_find(&dp->fdbs, addr, vid);
 	if (a) {
 		refcount_inc(&a->refcount);
-		goto out;
+		return 0;
 	}
 
 	a = kzalloc(sizeof(*a), GFP_KERNEL);
-	if (!a) {
-		err = -ENOMEM;
-		goto out;
-	}
+	if (!a)
+		return -ENOMEM;
 
 	err = ds->ops->port_fdb_add(ds, port, addr, vid);
 	if (err) {
 		kfree(a);
-		goto out;
+		return err;
 	}
 
 	ether_addr_copy(a->addr, addr);
@@ -327,10 +309,7 @@ static int dsa_port_do_fdb_add(struct dsa_port *dp, const unsigned char *addr,
 	refcount_set(&a->refcount, 1);
 	list_add_tail(&a->list, &dp->fdbs);
 
-out:
-	mutex_unlock(&dp->addr_lists_lock);
-
-	return err;
+	return 0;
 }
 
 static int dsa_port_do_fdb_del(struct dsa_port *dp, const unsigned char *addr,
@@ -339,36 +318,29 @@ static int dsa_port_do_fdb_del(struct dsa_port *dp, const unsigned char *addr,
 	struct dsa_switch *ds = dp->ds;
 	struct dsa_mac_addr *a;
 	int port = dp->index;
-	int err = 0;
+	int err;
 
 	/* No need to bother with refcounting for user ports */
 	if (!(dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp)))
 		return ds->ops->port_fdb_del(ds, port, addr, vid);
 
-	mutex_lock(&dp->addr_lists_lock);
-
 	a = dsa_mac_addr_find(&dp->fdbs, addr, vid);
-	if (!a) {
-		err = -ENOENT;
-		goto out;
-	}
+	if (!a)
+		return -ENOENT;
 
 	if (!refcount_dec_and_test(&a->refcount))
-		goto out;
+		return 0;
 
 	err = ds->ops->port_fdb_del(ds, port, addr, vid);
 	if (err) {
 		refcount_inc(&a->refcount);
-		goto out;
+		return err;
 	}
 
 	list_del(&a->list);
 	kfree(a);
 
-out:
-	mutex_unlock(&dp->addr_lists_lock);
-
-	return err;
+	return 0;
 }
 
 static int dsa_switch_host_fdb_add(struct dsa_switch *ds,
diff --git a/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh b/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh
deleted file mode 100755
index dca8be6092b9..000000000000
--- a/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-# Bridge FDB entries can be offloaded to DSA switches without holding the
-# rtnl_mutex. Traditionally this mutex has conferred drivers implicit
-# serialization, which means their code paths are not well tested in the
-# presence of concurrency.
-# This test creates a background task that stresses the FDB by adding and
-# deleting an entry many times in a row without the rtnl_mutex held.
-# It then tests the driver resistance to concurrency by calling .ndo_fdb_dump
-# (with rtnl_mutex held) from a foreground task.
-# Since either the FDB dump or the additions/removals can fail, but the
-# additions and removals are performed in deferred as opposed to process
-# context, we cannot simply check for user space error codes.
-
-WAIT_TIME=1
-NUM_NETIFS=1
-REQUIRE_JQ="no"
-REQUIRE_MZ="no"
-NETIF_CREATE="no"
-lib_dir=$(dirname $0)/../../../net/forwarding
-source $lib_dir/lib.sh
-
-cleanup() {
-	echo "Cleaning up"
-	kill $pid && wait $pid &> /dev/null
-	ip link del br0
-	echo "Please check kernel log for errors"
-}
-trap 'cleanup' EXIT
-
-eth=${NETIFS[p1]}
-
-ip link del br0 2&>1 >/dev/null || :
-ip link add br0 type bridge && ip link set $eth master br0
-
-(while :; do
-	bridge fdb add 00:01:02:03:04:05 dev $eth master static
-	bridge fdb del 00:01:02:03:04:05 dev $eth master static
-done) &
-pid=$!
-
-for i in $(seq 1 50); do
-	bridge fdb show > /dev/null
-	sleep 3
-	echo "$((${i} * 2))% complete..."
-done
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 520d8b53464b..92087d423bcf 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -23,8 +23,6 @@ MC_CLI=${MC_CLI:=smcroutectl}
 PING_TIMEOUT=${PING_TIMEOUT:=5}
 WAIT_TIMEOUT=${WAIT_TIMEOUT:=20}
 INTERFACE_TIMEOUT=${INTERFACE_TIMEOUT:=600}
-REQUIRE_JQ=${REQUIRE_JQ:=yes}
-REQUIRE_MZ=${REQUIRE_MZ:=yes}
 
 relative_path="${BASH_SOURCE%/*}"
 if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then
@@ -143,12 +141,8 @@ require_command()
 	fi
 }
 
-if [[ "$REQUIRE_JQ" = "yes" ]]; then
-	require_command jq
-fi
-if [[ "$REQUIRE_MZ" = "yes" ]]; then
-	require_command $MZ
-fi
+require_command jq
+require_command $MZ
 
 if [[ ! -v NUM_NETIFS ]]; then
 	echo "SKIP: importer does not define \"NUM_NETIFS\""
-- 
cgit v1.2.3


From d70b51f2845d4a0352361fd4f9741913a2cf2145 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Sun, 24 Oct 2021 20:17:56 +0300
Subject: selftests: lib: forwarding: allow tests to not require mz and jq

These programs are useful, but not all selftests require them.

Additionally, on embedded boards without package management (things like
buildroot), installing mausezahn or jq is not always as trivial as
downloading a package from the web.

So it is actually a bit annoying to require programs that are not used.
Introduce options that can be set by scripts to not enforce these
dependencies. For compatibility, default to "yes".

Cc: Nikolay Aleksandrov <nikolay@nvidia.com>
Cc: Ido Schimmel <idosch@nvidia.com>
Cc: Guillaume Nault <gnault@redhat.com>
Cc: Po-Hsu Lin <po-hsu.lin@canonical.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/forwarding/lib.sh | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 92087d423bcf..520d8b53464b 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -23,6 +23,8 @@ MC_CLI=${MC_CLI:=smcroutectl}
 PING_TIMEOUT=${PING_TIMEOUT:=5}
 WAIT_TIMEOUT=${WAIT_TIMEOUT:=20}
 INTERFACE_TIMEOUT=${INTERFACE_TIMEOUT:=600}
+REQUIRE_JQ=${REQUIRE_JQ:=yes}
+REQUIRE_MZ=${REQUIRE_MZ:=yes}
 
 relative_path="${BASH_SOURCE%/*}"
 if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then
@@ -141,8 +143,12 @@ require_command()
 	fi
 }
 
-require_command jq
-require_command $MZ
+if [[ "$REQUIRE_JQ" = "yes" ]]; then
+	require_command jq
+fi
+if [[ "$REQUIRE_MZ" = "yes" ]]; then
+	require_command $MZ
+fi
 
 if [[ ! -v NUM_NETIFS ]]; then
 	echo "SKIP: importer does not define \"NUM_NETIFS\""
-- 
cgit v1.2.3


From eccd0a80dc7f4be65430236db475546b0ab9ec37 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Sun, 24 Oct 2021 20:17:57 +0300
Subject: selftests: net: dsa: add a stress test for unlocked FDB operations

This test is a bit strange in that it is perhaps more manual than
others: it does not transmit a clear OK/FAIL verdict, because user space
does not have synchronous feedback from the kernel. If a hardware access
fails, it is in deferred context.

Nonetheless, on sja1105 I have used it successfully to find and solve a
concurrency issue, so it can be used as a starting point for other
driver maintainers too.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 MAINTAINERS                                        |  1 +
 .../drivers/net/dsa/test_bridge_fdb_stress.sh      | 47 ++++++++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh

(limited to 'tools/testing')

diff --git a/MAINTAINERS b/MAINTAINERS
index c5aa142d4b3a..975086c5345d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13056,6 +13056,7 @@ F:	include/linux/dsa/
 F:	include/linux/platform_data/dsa.h
 F:	include/net/dsa.h
 F:	net/dsa/
+F:	tools/testing/selftests/drivers/net/dsa/
 
 NETWORKING [GENERAL]
 M:	"David S. Miller" <davem@davemloft.net>
diff --git a/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh b/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh
new file mode 100755
index 000000000000..dca8be6092b9
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/dsa/test_bridge_fdb_stress.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Bridge FDB entries can be offloaded to DSA switches without holding the
+# rtnl_mutex. Traditionally this mutex has conferred drivers implicit
+# serialization, which means their code paths are not well tested in the
+# presence of concurrency.
+# This test creates a background task that stresses the FDB by adding and
+# deleting an entry many times in a row without the rtnl_mutex held.
+# It then tests the driver resistance to concurrency by calling .ndo_fdb_dump
+# (with rtnl_mutex held) from a foreground task.
+# Since either the FDB dump or the additions/removals can fail, but the
+# additions and removals are performed in deferred as opposed to process
+# context, we cannot simply check for user space error codes.
+
+WAIT_TIME=1
+NUM_NETIFS=1
+REQUIRE_JQ="no"
+REQUIRE_MZ="no"
+NETIF_CREATE="no"
+lib_dir=$(dirname $0)/../../../net/forwarding
+source $lib_dir/lib.sh
+
+cleanup() {
+	echo "Cleaning up"
+	kill $pid && wait $pid &> /dev/null
+	ip link del br0
+	echo "Please check kernel log for errors"
+}
+trap 'cleanup' EXIT
+
+eth=${NETIFS[p1]}
+
+ip link del br0 2&>1 >/dev/null || :
+ip link add br0 type bridge && ip link set $eth master br0
+
+(while :; do
+	bridge fdb add 00:01:02:03:04:05 dev $eth master static
+	bridge fdb del 00:01:02:03:04:05 dev $eth master static
+done) &
+pid=$!
+
+for i in $(seq 1 50); do
+	bridge fdb show > /dev/null
+	sleep 3
+	echo "$((${i} * 2))% complete..."
+done
-- 
cgit v1.2.3


From b8bfafe43481e0b053694227bb013150f10db3ae Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@nvidia.com>
Date: Sun, 24 Oct 2021 10:19:09 +0300
Subject: selftests: mlxsw: Add helpers for skipping selftests

A number of mlxsw-specific selftests currently detect whether they are run
on a compatible machine, and bail out silently when not. These tests are
however done in a somewhat impenetrable manner by directly comparing PCI
IDs against a blacklist or a whitelist, and bailing out silently if the
machine is not compatible.

Instead, add a helper, mlxsw_only_on_spectrum(), which allows specifying
the supported machines in a human-readable manner. If the current machine
is incompatible, the helper emits a SKIP message and returns an error code,
based on which the caller can gracefully bail out in a suitable way. This
allows a more readable conditions such as:

	mlxsw_only_on_spectrum 2+ || return

Convert all existing open-coded guards to the new helper. Also add two new
guards to do_mark_test() and do_drop_test(), which are supported only on
Spectrum-2+, but the corresponding check was not there.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../drivers/net/mlxsw/devlink_trap_control.sh      |  7 ++-
 .../selftests/drivers/net/mlxsw/mlxsw_lib.sh       | 50 ++++++++++++++++++++++
 .../selftests/drivers/net/mlxsw/sch_red_core.sh    | 10 +++--
 .../drivers/net/mlxsw/spectrum-2/resource_scale.sh |  7 +--
 .../net/mlxsw/spectrum/devlink_lib_spectrum.sh     |  6 +--
 .../selftests/drivers/net/mlxsw/tc_restrictions.sh |  3 +-
 .../selftests/drivers/net/mlxsw/tc_sample.sh       | 13 +++---
 tools/testing/selftests/net/forwarding/lib.sh      |  9 ++++
 8 files changed, 81 insertions(+), 24 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_control.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_control.sh
index a37273473c1b..d3a891d421ab 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_control.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_control.sh
@@ -87,6 +87,7 @@ ALL_TESTS="
 NUM_NETIFS=4
 source $lib_dir/lib.sh
 source $lib_dir/devlink_lib.sh
+source mlxsw_lib.sh
 
 h1_create()
 {
@@ -626,8 +627,7 @@ ipv6_redirect_test()
 
 ptp_event_test()
 {
-	# PTP is only supported on Spectrum-1, for now.
-	[[ "$DEVLINK_VIDDID" != "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 1 || return
 
 	# PTP Sync (0)
 	devlink_trap_stats_test "PTP Time-Critical Event Message" "ptp_event" \
@@ -638,8 +638,7 @@ ptp_event_test()
 
 ptp_general_test()
 {
-	# PTP is only supported on Spectrum-1, for now.
-	[[ "$DEVLINK_VIDDID" != "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 1 || return
 
 	# PTP Announce (b)
 	devlink_trap_stats_test "PTP General Message" "ptp_general" \
diff --git a/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh b/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh
index cbe50f260a40..a95856aafd2a 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/mlxsw_lib.sh
@@ -11,3 +11,53 @@ if [[ ! -v MLXSW_CHIP ]]; then
 		exit 1
 	fi
 fi
+
+MLXSW_SPECTRUM_REV=$(case $MLXSW_CHIP in
+			     mlxsw_spectrum)
+				     echo 1 ;;
+			     mlxsw_spectrum*)
+				     echo ${MLXSW_CHIP#mlxsw_spectrum} ;;
+			     *)
+				     echo "Couldn't determine Spectrum chip revision." \
+					  > /dev/stderr ;;
+		     esac)
+
+mlxsw_on_spectrum()
+{
+	local rev=$1; shift
+	local op="=="
+	local rev2=${rev%+}
+
+	if [[ $rev2 != $rev ]]; then
+		op=">="
+	fi
+
+	((MLXSW_SPECTRUM_REV $op rev2))
+}
+
+__mlxsw_only_on_spectrum()
+{
+	local rev=$1; shift
+	local caller=$1; shift
+	local src=$1; shift
+
+	if ! mlxsw_on_spectrum "$rev"; then
+		log_test_skip $src:$caller "(Spectrum-$rev only)"
+		return 1
+	fi
+}
+
+mlxsw_only_on_spectrum()
+{
+	local caller=${FUNCNAME[1]}
+	local src=${BASH_SOURCE[1]}
+	local rev
+
+	for rev in "$@"; do
+		if __mlxsw_only_on_spectrum "$rev" "$caller" "$src"; then
+			return 0
+		fi
+	done
+
+	return 1
+}
diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
index dd90cd87d4f9..f260f01db0e8 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_red_core.sh
@@ -73,6 +73,7 @@ CHECK_TC="yes"
 lib_dir=$(dirname $0)/../../../net/forwarding
 source $lib_dir/lib.sh
 source $lib_dir/devlink_lib.sh
+source mlxsw_lib.sh
 source qos_lib.sh
 
 ipaddr()
@@ -479,10 +480,7 @@ do_ecn_test_perband()
 	local vlan=$1; shift
 	local limit=$1; shift
 
-	# Per-band ECN counters are not supported on Spectrum-1 and Spectrum-2.
-	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ||
-	   "$DEVLINK_VIDDID" == "15b3:cf6c" ]] && return
-
+	mlxsw_only_on_spectrum 3+ || return
 	__do_ecn_test get_qdisc_nmarked "$vlan" "$limit" "per-band ECN"
 }
 
@@ -584,6 +582,8 @@ do_mark_test()
 	local should_fail=$1; shift
 	local base
 
+	mlxsw_only_on_spectrum 2+ || return
+
 	RET=0
 
 	start_tcp_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) \
@@ -632,6 +632,8 @@ do_drop_test()
 	local base
 	local now
 
+	mlxsw_only_on_spectrum 2+ || return
+
 	RET=0
 
 	start_traffic $h1.$vlan $(ipaddr 1 $vlan) $(ipaddr 3 $vlan) $h3_mac
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
index 50654f8a8c37..02b7eea19743 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
@@ -7,12 +7,9 @@ NUM_NETIFS=6
 source $lib_dir/lib.sh
 source $lib_dir/tc_common.sh
 source $lib_dir/devlink_lib.sh
+source ../mlxsw_lib.sh
 
-if [[ "$DEVLINK_VIDDID" != "15b3:cf6c" && \
-	"$DEVLINK_VIDDID" != "15b3:cf70" ]]; then
-	echo "SKIP: test is tailored for Mellanox Spectrum-2 and Spectrum-3"
-	exit 1
-fi
+mlxsw_only_on_spectrum 2+ || exit 1
 
 current_test=""
 
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/devlink_lib_spectrum.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/devlink_lib_spectrum.sh
index 73035e25085d..06a80f40daa4 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum/devlink_lib_spectrum.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/devlink_lib_spectrum.sh
@@ -2,11 +2,9 @@
 # SPDX-License-Identifier: GPL-2.0
 
 source "../../../../net/forwarding/devlink_lib.sh"
+source ../mlxsw_lib.sh
 
-if [ "$DEVLINK_VIDDID" != "15b3:cb84" ]; then
-	echo "SKIP: test is tailored for Mellanox Spectrum"
-	exit 1
-fi
+mlxsw_only_on_spectrum 1 || exit 1
 
 # Needed for returning to default
 declare -A KVD_DEFAULTS
diff --git a/tools/testing/selftests/drivers/net/mlxsw/tc_restrictions.sh b/tools/testing/selftests/drivers/net/mlxsw/tc_restrictions.sh
index 5ec3beb637c8..0441a18f098b 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/tc_restrictions.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/tc_restrictions.sh
@@ -20,6 +20,7 @@ NUM_NETIFS=2
 source $lib_dir/tc_common.sh
 source $lib_dir/lib.sh
 source $lib_dir/devlink_lib.sh
+source mlxsw_lib.sh
 
 switch_create()
 {
@@ -169,7 +170,7 @@ matchall_sample_egress_test()
 
 	# It is forbidden in mlxsw driver to have matchall with sample action
 	# bound on egress. Spectrum-1 specific restriction
-	[[ "$DEVLINK_VIDDID" != "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 1 || return
 
 	tc qdisc add dev $swp1 clsact
 
diff --git a/tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh b/tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh
index 373d5f2a846e..83a0210e7544 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/tc_sample.sh
@@ -51,6 +51,7 @@ NUM_NETIFS=8
 CAPTURE_FILE=$(mktemp)
 source $lib_dir/lib.sh
 source $lib_dir/devlink_lib.sh
+source mlxsw_lib.sh
 
 # Available at https://github.com/Mellanox/libpsample
 require_command psample
@@ -431,7 +432,7 @@ tc_sample_md_out_tc_test()
 	RET=0
 
 	# Output traffic class is not supported on Spectrum-1.
-	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 2+ || return
 
 	tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
 		skip_sw action sample rate 5 group 1
@@ -477,7 +478,7 @@ tc_sample_md_out_tc_occ_test()
 	RET=0
 
 	# Output traffic class occupancy is not supported on Spectrum-1.
-	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 2+ || return
 
 	tc filter add dev $rp1 ingress protocol all pref 1 handle 101 matchall \
 		skip_sw action sample rate 1024 group 1
@@ -521,7 +522,7 @@ tc_sample_md_latency_test()
 	RET=0
 
 	# Egress sampling not supported on Spectrum-1.
-	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 2+ || return
 
 	tc filter add dev $rp2 egress protocol all pref 1 handle 101 matchall \
 		skip_sw action sample rate 5 group 1
@@ -550,7 +551,7 @@ tc_sample_acl_group_conflict_test()
 	# port with different groups.
 
 	# Policy-based sampling is not supported on Spectrum-1.
-	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 2+ || return
 
 	tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \
 		skip_sw action sample rate 1024 group 1
@@ -579,7 +580,7 @@ __tc_sample_acl_rate_test()
 	RET=0
 
 	# Policy-based sampling is not supported on Spectrum-1.
-	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 2+ || return
 
 	tc filter add dev $port $bind protocol ip pref 1 handle 101 flower \
 		skip_sw dst_ip 198.51.100.1 action sample rate 32 group 1
@@ -631,7 +632,7 @@ tc_sample_acl_max_rate_test()
 	RET=0
 
 	# Policy-based sampling is not supported on Spectrum-1.
-	[[ "$DEVLINK_VIDDID" == "15b3:cb84" ]] && return
+	mlxsw_only_on_spectrum 2+ || return
 
 	tc filter add dev $rp1 ingress protocol ip pref 1 handle 101 flower \
 		skip_sw action sample rate $((2 ** 24 - 1)) group 1
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 520d8b53464b..dfd827b7a9f9 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -286,6 +286,15 @@ log_test()
 	return 0
 }
 
+log_test_skip()
+{
+	local test_name=$1
+	local opt_str=$2
+
+	printf "TEST: %-60s  [SKIP]\n" "$test_name $opt_str"
+	return 0
+}
+
 log_info()
 {
 	local msg=$1
-- 
cgit v1.2.3


From 535ac9a5fba51acce1cbde2257a0ef8f35d4ac70 Mon Sep 17 00:00:00 2001
From: Ido Schimmel <idosch@nvidia.com>
Date: Sun, 24 Oct 2021 10:19:10 +0300
Subject: selftests: mlxsw: Use permanent neighbours instead of reachable ones

The nexthop objects tests configure dummy reachable neighbours so that
the nexthops will have a MAC address and be programmed to the device.

Since these are dummy reachable neighbours, they can be transitioned by
the kernel to a failed state if they are around for too long. This can
happen, for example, if the "TIMEOUT" variable is configured with a too
high value.

Make the tests more robust by configuring the neighbours as permanent,
so that the tests do not depend on the configured timeout value.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../selftests/drivers/net/mlxsw/rtnetlink.sh       | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
index a217f9f6775b..1075d70e8f25 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
@@ -779,7 +779,7 @@ nexthop_obj_offload_test()
 	setup_wait
 
 	ip nexthop add id 1 via 192.0.2.2 dev $swp1
-	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
 
 	busywait "$TIMEOUT" wait_for_offload \
@@ -791,7 +791,7 @@ nexthop_obj_offload_test()
 		ip nexthop show id 1
 	check_err $? "nexthop marked as offloaded after setting neigh to failed state"
 
-	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
 	busywait "$TIMEOUT" wait_for_offload \
 		ip nexthop show id 1
@@ -828,11 +828,11 @@ nexthop_obj_group_offload_test()
 	ip nexthop add id 1 via 192.0.2.2 dev $swp1
 	ip nexthop add id 2 via 2001:db8:1::2 dev $swp1
 	ip nexthop add id 10 group 1/2
-	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
-	ip neigh replace 192.0.2.3 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 192.0.2.3 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
-	ip neigh replace 2001:db8:1::2 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 2001:db8:1::2 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
 
 	busywait "$TIMEOUT" wait_for_offload \
@@ -888,11 +888,11 @@ nexthop_obj_bucket_offload_test()
 	ip nexthop add id 1 via 192.0.2.2 dev $swp1
 	ip nexthop add id 2 via 2001:db8:1::2 dev $swp1
 	ip nexthop add id 10 group 1/2 type resilient buckets 32 idle_timer 0
-	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
-	ip neigh replace 192.0.2.3 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 192.0.2.3 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
-	ip neigh replace 2001:db8:1::2 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 2001:db8:1::2 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
 
 	busywait "$TIMEOUT" wait_for_offload \
@@ -921,7 +921,7 @@ nexthop_obj_bucket_offload_test()
 	check_err $? "nexthop bucket not marked as offloaded after revalidating nexthop"
 
 	# Revalidate nexthop id 2 by changing its neighbour
-	ip neigh replace 2001:db8:1::2 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 2001:db8:1::2 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
 	busywait "$TIMEOUT" wait_for_offload \
 		ip nexthop bucket show nhid 2
@@ -971,9 +971,9 @@ nexthop_obj_route_offload_test()
 	setup_wait
 
 	ip nexthop add id 1 via 192.0.2.2 dev $swp1
-	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 192.0.2.2 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
-	ip neigh replace 192.0.2.3 lladdr 00:11:22:33:44:55 nud reachable \
+	ip neigh replace 192.0.2.3 lladdr 00:11:22:33:44:55 nud perm \
 		dev $swp1
 
 	ip route replace 198.51.100.0/24 nhid 1
-- 
cgit v1.2.3


From e860419684b547dd4daa8143ad70a97955571482 Mon Sep 17 00:00:00 2001
From: Ido Schimmel <idosch@nvidia.com>
Date: Sun, 24 Oct 2021 10:19:11 +0300
Subject: selftests: mlxsw: Reduce test run time

Instead of iterating over all the available trap policers, only perform
the tests with three policers: The first, the last and the one in the
middle of the range. On a Spectrum-3 system, this reduces the run time
from almost an hour to a few minutes.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../drivers/net/mlxsw/devlink_trap_policer.sh      | 32 ++++++++++++++--------
 .../selftests/net/forwarding/devlink_lib.sh        |  6 ----
 2 files changed, 20 insertions(+), 18 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh
index 508a702f0021..0bd5ffc218ac 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/devlink_trap_policer.sh
@@ -272,13 +272,17 @@ __rate_test()
 
 rate_test()
 {
-	local id
+	local last_policer=$(devlink -j -p trap policer show |
+			     jq '[.[]["'$DEVLINK_DEV'"][].policer] | max')
 
-	for id in $(devlink_trap_policer_ids_get); do
-		echo
-		log_info "Running rate test for policer $id"
-		__rate_test $id
-	done
+	log_info "Running rate test for policer 1"
+	__rate_test 1
+
+	log_info "Running rate test for policer $((last_policer / 2))"
+	__rate_test $((last_policer / 2))
+
+	log_info "Running rate test for policer $last_policer"
+	__rate_test $last_policer
 }
 
 __burst_test()
@@ -342,13 +346,17 @@ __burst_test()
 
 burst_test()
 {
-	local id
+	local last_policer=$(devlink -j -p trap policer show |
+			     jq '[.[]["'$DEVLINK_DEV'"][].policer] | max')
+
+	log_info "Running burst test for policer 1"
+	__burst_test 1
+
+	log_info "Running burst test for policer $((last_policer / 2))"
+	__burst_test $((last_policer / 2))
 
-	for id in $(devlink_trap_policer_ids_get); do
-		echo
-		log_info "Running burst size test for policer $id"
-		__burst_test $id
-	done
+	log_info "Running burst test for policer $last_policer"
+	__burst_test $last_policer
 }
 
 trap cleanup EXIT
diff --git a/tools/testing/selftests/net/forwarding/devlink_lib.sh b/tools/testing/selftests/net/forwarding/devlink_lib.sh
index 2c14a86adaaa..de9944d42027 100644
--- a/tools/testing/selftests/net/forwarding/devlink_lib.sh
+++ b/tools/testing/selftests/net/forwarding/devlink_lib.sh
@@ -563,12 +563,6 @@ devlink_trap_group_policer_get()
 		| jq '.[][][]["policer"]'
 }
 
-devlink_trap_policer_ids_get()
-{
-	devlink -j -p trap policer show \
-		| jq '.[]["'$DEVLINK_DEV'"][]["policer"]'
-}
-
 devlink_port_by_netdev()
 {
 	local if_name=$1
-- 
cgit v1.2.3


From 6972dc3b8778ce0d9ce819c6f1e3d32ce2bc3dd9 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Fri, 22 Oct 2021 15:32:25 -0700
Subject: selftests/bpf: Normalize selftest entry points

Ensure that all test entry points are global void functions with no
input arguments. Mark few subtest entry points as static.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211022223228.99920-2-andrii@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/btf_dump.c          |  2 +-
 tools/testing/selftests/bpf/prog_tests/resolve_btfids.c    | 10 ++++------
 tools/testing/selftests/bpf/prog_tests/signal_pending.c    |  2 +-
 tools/testing/selftests/bpf/prog_tests/snprintf.c          |  4 ++--
 tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c   |  6 +++---
 tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c |  4 ++--
 6 files changed, 13 insertions(+), 15 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dump.c b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
index 3d837a7019fd..aa76360d8f49 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_dump.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
@@ -133,7 +133,7 @@ static char *dump_buf;
 static size_t dump_buf_sz;
 static FILE *dump_buf_file;
 
-void test_btf_dump_incremental(void)
+static void test_btf_dump_incremental(void)
 {
 	struct btf *btf = NULL;
 	struct btf_dump *d = NULL;
diff --git a/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c b/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
index badda6309fd9..f4a13d9dd5c8 100644
--- a/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
+++ b/tools/testing/selftests/bpf/prog_tests/resolve_btfids.c
@@ -117,14 +117,14 @@ static int resolve_symbols(void)
 	return 0;
 }
 
-int test_resolve_btfids(void)
+void test_resolve_btfids(void)
 {
 	__u32 *test_list, *test_lists[] = { test_list_local, test_list_global };
 	unsigned int i, j;
 	int ret = 0;
 
 	if (resolve_symbols())
-		return -1;
+		return;
 
 	/* Check BTF_ID_LIST(test_list_local) and
 	 * BTF_ID_LIST_GLOBAL(test_list_global) IDs
@@ -138,7 +138,7 @@ int test_resolve_btfids(void)
 				    test_symbols[i].name,
 				    test_list[i], test_symbols[i].id);
 			if (ret)
-				return ret;
+				return;
 		}
 	}
 
@@ -161,9 +161,7 @@ int test_resolve_btfids(void)
 
 		if (i > 0) {
 			if (!ASSERT_LE(test_set.ids[i - 1], test_set.ids[i], "sort_check"))
-				return -1;
+				return;
 		}
 	}
-
-	return ret;
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/signal_pending.c b/tools/testing/selftests/bpf/prog_tests/signal_pending.c
index dfcbddcbe4d3..fdfdcff6cbef 100644
--- a/tools/testing/selftests/bpf/prog_tests/signal_pending.c
+++ b/tools/testing/selftests/bpf/prog_tests/signal_pending.c
@@ -42,7 +42,7 @@ static void test_signal_pending_by_type(enum bpf_prog_type prog_type)
 	signal(SIGALRM, SIG_DFL);
 }
 
-void test_signal_pending(enum bpf_prog_type prog_type)
+void test_signal_pending(void)
 {
 	test_signal_pending_by_type(BPF_PROG_TYPE_SOCKET_FILTER);
 	test_signal_pending_by_type(BPF_PROG_TYPE_FLOW_DISSECTOR);
diff --git a/tools/testing/selftests/bpf/prog_tests/snprintf.c b/tools/testing/selftests/bpf/prog_tests/snprintf.c
index 8fd1b4b29a0e..394ebfc3bbf3 100644
--- a/tools/testing/selftests/bpf/prog_tests/snprintf.c
+++ b/tools/testing/selftests/bpf/prog_tests/snprintf.c
@@ -33,7 +33,7 @@
 
 #define EXP_NO_BUF_RET 29
 
-void test_snprintf_positive(void)
+static void test_snprintf_positive(void)
 {
 	char exp_addr_out[] = EXP_ADDR_OUT;
 	char exp_sym_out[]  = EXP_SYM_OUT;
@@ -103,7 +103,7 @@ static int load_single_snprintf(char *fmt)
 	return ret;
 }
 
-void test_snprintf_negative(void)
+static void test_snprintf_negative(void)
 {
 	ASSERT_OK(load_single_snprintf("valid %d"), "valid usage");
 
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
index d5c98f2cb12f..f529e3c923ae 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_adjust_tail.c
@@ -2,7 +2,7 @@
 #include <test_progs.h>
 #include <network_helpers.h>
 
-void test_xdp_adjust_tail_shrink(void)
+static void test_xdp_adjust_tail_shrink(void)
 {
 	const char *file = "./test_xdp_adjust_tail_shrink.o";
 	__u32 duration, retval, size, expect_sz;
@@ -30,7 +30,7 @@ void test_xdp_adjust_tail_shrink(void)
 	bpf_object__close(obj);
 }
 
-void test_xdp_adjust_tail_grow(void)
+static void test_xdp_adjust_tail_grow(void)
 {
 	const char *file = "./test_xdp_adjust_tail_grow.o";
 	struct bpf_object *obj;
@@ -58,7 +58,7 @@ void test_xdp_adjust_tail_grow(void)
 	bpf_object__close(obj);
 }
 
-void test_xdp_adjust_tail_grow2(void)
+static void test_xdp_adjust_tail_grow2(void)
 {
 	const char *file = "./test_xdp_adjust_tail_grow.o";
 	char buf[4096]; /* avoid segfault: large buf to hold grow results */
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
index d4e9a9972a67..3079d5568f8f 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
@@ -8,7 +8,7 @@
 
 #define IFINDEX_LO 1
 
-void test_xdp_with_devmap_helpers(void)
+static void test_xdp_with_devmap_helpers(void)
 {
 	struct test_xdp_with_devmap_helpers *skel;
 	struct bpf_prog_info info = {};
@@ -60,7 +60,7 @@ out_close:
 	test_xdp_with_devmap_helpers__destroy(skel);
 }
 
-void test_neg_xdp_devmap_helpers(void)
+static void test_neg_xdp_devmap_helpers(void)
 {
 	struct test_xdp_devmap_helpers *skel;
 
-- 
cgit v1.2.3


From 8ea688e7f444f1830aa4b283e1364ab9d9bf42b5 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Fri, 22 Oct 2021 15:32:26 -0700
Subject: selftests/bpf: Support multiple tests per file

Revamp how test discovery works for test_progs and allow multiple test
entries per file. Any global void function with no arguments and
serial_test_ or test_ prefix is considered a test.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211022223228.99920-3-andrii@kernel.org
---
 tools/testing/selftests/bpf/Makefile | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 498222543c37..ac47cf9760fc 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -421,10 +421,9 @@ ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
 $(TRUNNER_TESTS_DIR)-tests-hdr := y
 $(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
 	$$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
-	$$(shell ( cd $(TRUNNER_TESTS_DIR);				\
-		  echo '/* Generated header, do not edit */';		\
-		  ls *.c 2> /dev/null |					\
-			sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@';	\
+	$$(shell (echo '/* Generated header, do not edit */';					\
+		  sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p'	\
+			$(TRUNNER_TESTS_DIR)/*.c | sort ;	\
 		 ) > $$@)
 endif
 
-- 
cgit v1.2.3


From 2c0f51ac320649402a80a6228744eb54f42a5c21 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Fri, 22 Oct 2021 15:32:27 -0700
Subject: selftests/bpf: Mark tc_redirect selftest as serial

It seems to cause a lot of harm to kprobe/tracepoint selftests. Yucong
mentioned before that it does manipulate sysfs, which might be the
reason. So let's mark it as serial, though ideally it would be less
intrusive on the system at test.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211022223228.99920-4-andrii@kernel.org
---
 tools/testing/selftests/bpf/prog_tests/tc_redirect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
index e87bc4466d9a..53672634bc52 100644
--- a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
@@ -769,7 +769,7 @@ static void *test_tc_redirect_run_tests(void *arg)
 	return NULL;
 }
 
-void test_tc_redirect(void)
+void serial_test_tc_redirect(void)
 {
 	pthread_t test_thread;
 	int err;
-- 
cgit v1.2.3


From 3762a39ce85feb07996f3f0390963da71874c651 Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Fri, 22 Oct 2021 15:32:28 -0700
Subject: selftests/bpf: Split out bpf_verif_scale selftests into multiple
 tests

Instead of using subtests in bpf_verif_scale selftest, turn each scale
sub-test into its own test. Each subtest is compltely independent and
just reuses a bit of common test running logic, so the conversion is
trivial. For convenience, keep all of BPF verifier scale tests in one
file.

This conversion shaves off a significant amount of time when running
test_progs in parallel mode. E.g., just running scale tests (-t verif_scale):

BEFORE
======
Summary: 24/0 PASSED, 0 SKIPPED, 0 FAILED

real    0m22.894s
user    0m0.012s
sys     0m22.797s

AFTER
=====
Summary: 24/0 PASSED, 0 SKIPPED, 0 FAILED

real    0m12.044s
user    0m0.024s
sys     0m27.869s

Ten second saving right there. test_progs -j is not yet ready to be
turned on by default, unfortunately, and some tests fail almost every
time, but this is a good improvement nevertheless. Ignoring few
failures, here is sequential vs parallel run times when running all
tests now:

SEQUENTIAL
==========
Summary: 206/953 PASSED, 4 SKIPPED, 0 FAILED

real    1m5.625s
user    0m4.211s
sys     0m31.650s

PARALLEL
========
Summary: 204/952 PASSED, 4 SKIPPED, 2 FAILED

real    0m35.550s
user    0m4.998s
sys     0m39.890s

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211022223228.99920-5-andrii@kernel.org
---
 .../selftests/bpf/prog_tests/bpf_verif_scale.c     | 220 ++++++++++++++-------
 1 file changed, 152 insertions(+), 68 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
index 3d002c245d2b..867349e4ed9e 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
@@ -39,82 +39,166 @@ struct scale_test_def {
 	bool fails;
 };
 
-void test_bpf_verif_scale(void)
-{
-	struct scale_test_def tests[] = {
-		{ "loop3.o", BPF_PROG_TYPE_RAW_TRACEPOINT, true /* fails */ },
-
-		{ "test_verif_scale1.o", BPF_PROG_TYPE_SCHED_CLS },
-		{ "test_verif_scale2.o", BPF_PROG_TYPE_SCHED_CLS },
-		{ "test_verif_scale3.o", BPF_PROG_TYPE_SCHED_CLS },
-
-		{ "pyperf_global.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-		{ "pyperf_subprogs.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-
-		/* full unroll by llvm */
-		{ "pyperf50.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-		{ "pyperf100.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-		{ "pyperf180.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-
-		/* partial unroll. llvm will unroll loop ~150 times.
-		 * C loop count -> 600.
-		 * Asm loop count -> 4.
-		 * 16k insns in loop body.
-		 * Total of 5 such loops. Total program size ~82k insns.
-		 */
-		{ "pyperf600.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-
-		/* no unroll at all.
-		 * C loop count -> 600.
-		 * ASM loop count -> 600.
-		 * ~110 insns in loop body.
-		 * Total of 5 such loops. Total program size ~1500 insns.
-		 */
-		{ "pyperf600_nounroll.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-
-		{ "loop1.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-		{ "loop2.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-		{ "loop4.o", BPF_PROG_TYPE_SCHED_CLS },
-		{ "loop5.o", BPF_PROG_TYPE_SCHED_CLS },
-		{ "loop6.o", BPF_PROG_TYPE_KPROBE },
-
-		/* partial unroll. 19k insn in a loop.
-		 * Total program size 20.8k insn.
-		 * ~350k processed_insns
-		 */
-		{ "strobemeta.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-
-		/* no unroll, tiny loops */
-		{ "strobemeta_nounroll1.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-		{ "strobemeta_nounroll2.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-
-		/* non-inlined subprogs */
-		{ "strobemeta_subprogs.o", BPF_PROG_TYPE_RAW_TRACEPOINT },
-
-		{ "test_sysctl_loop1.o", BPF_PROG_TYPE_CGROUP_SYSCTL },
-		{ "test_sysctl_loop2.o", BPF_PROG_TYPE_CGROUP_SYSCTL },
-
-		{ "test_xdp_loop.o", BPF_PROG_TYPE_XDP },
-		{ "test_seg6_loop.o", BPF_PROG_TYPE_LWT_SEG6LOCAL },
-	};
+static void scale_test(const char *file,
+		       enum bpf_prog_type attach_type,
+		       bool should_fail)
+{
 	libbpf_print_fn_t old_print_fn = NULL;
-	int err, i;
+	int err;
 
 	if (env.verifier_stats) {
 		test__force_log();
 		old_print_fn = libbpf_set_print(libbpf_debug_print);
 	}
 
-	for (i = 0; i < ARRAY_SIZE(tests); i++) {
-		const struct scale_test_def *test = &tests[i];
-
-		if (!test__start_subtest(test->file))
-			continue;
-
-		err = check_load(test->file, test->attach_type);
-		CHECK_FAIL(err && !test->fails);
-	}
+	err = check_load(file, attach_type);
+	if (should_fail)
+		ASSERT_ERR(err, "expect_error");
+	else
+		ASSERT_OK(err, "expect_success");
 
 	if (env.verifier_stats)
 		libbpf_set_print(old_print_fn);
 }
+
+void test_verif_scale1()
+{
+	scale_test("test_verif_scale1.o", BPF_PROG_TYPE_SCHED_CLS, false);
+}
+
+void test_verif_scale2()
+{
+	scale_test("test_verif_scale2.o", BPF_PROG_TYPE_SCHED_CLS, false);
+}
+
+void test_verif_scale3()
+{
+	scale_test("test_verif_scale3.o", BPF_PROG_TYPE_SCHED_CLS, false);
+}
+
+void test_verif_scale_pyperf_global()
+{
+	scale_test("pyperf_global.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_pyperf_subprogs()
+{
+	scale_test("pyperf_subprogs.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_pyperf50()
+{
+	/* full unroll by llvm */
+	scale_test("pyperf50.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_pyperf100()
+{
+	/* full unroll by llvm */
+	scale_test("pyperf100.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_pyperf180()
+{
+	/* full unroll by llvm */
+	scale_test("pyperf180.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_pyperf600()
+{
+	/* partial unroll. llvm will unroll loop ~150 times.
+	 * C loop count -> 600.
+	 * Asm loop count -> 4.
+	 * 16k insns in loop body.
+	 * Total of 5 such loops. Total program size ~82k insns.
+	 */
+	scale_test("pyperf600.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_pyperf600_nounroll()
+{
+	/* no unroll at all.
+	 * C loop count -> 600.
+	 * ASM loop count -> 600.
+	 * ~110 insns in loop body.
+	 * Total of 5 such loops. Total program size ~1500 insns.
+	 */
+	scale_test("pyperf600_nounroll.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_loop1()
+{
+	scale_test("loop1.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_loop2()
+{
+	scale_test("loop2.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_loop3_fail()
+{
+	scale_test("loop3.o", BPF_PROG_TYPE_RAW_TRACEPOINT, true /* fails */);
+}
+
+void test_verif_scale_loop4()
+{
+	scale_test("loop4.o", BPF_PROG_TYPE_SCHED_CLS, false);
+}
+
+void test_verif_scale_loop5()
+{
+	scale_test("loop5.o", BPF_PROG_TYPE_SCHED_CLS, false);
+}
+
+void test_verif_scale_loop6()
+{
+	scale_test("loop6.o", BPF_PROG_TYPE_KPROBE, false);
+}
+
+void test_verif_scale_strobemeta()
+{
+	/* partial unroll. 19k insn in a loop.
+	 * Total program size 20.8k insn.
+	 * ~350k processed_insns
+	 */
+	scale_test("strobemeta.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_strobemeta_nounroll1()
+{
+	/* no unroll, tiny loops */
+	scale_test("strobemeta_nounroll1.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_strobemeta_nounroll2()
+{
+	/* no unroll, tiny loops */
+	scale_test("strobemeta_nounroll2.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_strobemeta_subprogs()
+{
+	/* non-inlined subprogs */
+	scale_test("strobemeta_subprogs.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
+}
+
+void test_verif_scale_sysctl_loop1()
+{
+	scale_test("test_sysctl_loop1.o", BPF_PROG_TYPE_CGROUP_SYSCTL, false);
+}
+
+void test_verif_scale_sysctl_loop2()
+{
+	scale_test("test_sysctl_loop2.o", BPF_PROG_TYPE_CGROUP_SYSCTL, false);
+}
+
+void test_verif_scale_xdp_loop()
+{
+	scale_test("test_xdp_loop.o", BPF_PROG_TYPE_XDP, false);
+}
+
+void test_verif_scale_seg6_loop()
+{
+	scale_test("test_seg6_loop.o", BPF_PROG_TYPE_LWT_SEG6LOCAL, false);
+}
-- 
cgit v1.2.3


From 06fca841fb64c9ed499a3575a530014268d0251a Mon Sep 17 00:00:00 2001
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: Tue, 26 Oct 2021 03:08:28 +0200
Subject: selftests/bpf: Use __BYTE_ORDER__

Use the compiler-defined __BYTE_ORDER__ instead of the libc-defined
__BYTE_ORDER for consistency.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211026010831.748682-4-iii@linux.ibm.com
---
 tools/testing/selftests/bpf/prog_tests/btf_endian.c        |  6 +++---
 tools/testing/selftests/bpf/test_sysctl.c                  |  4 ++--
 tools/testing/selftests/bpf/verifier/ctx_skb.c             | 14 +++++++-------
 tools/testing/selftests/bpf/verifier/lwt.c                 |  2 +-
 .../selftests/bpf/verifier/perf_event_sample_period.c      |  6 +++---
 5 files changed, 16 insertions(+), 16 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/btf_endian.c b/tools/testing/selftests/bpf/prog_tests/btf_endian.c
index 2653cc482df4..8afbf3d0b89a 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_endian.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_endian.c
@@ -7,12 +7,12 @@
 #include <bpf/btf.h>
 
 void test_btf_endian() {
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	enum btf_endianness endian = BTF_LITTLE_ENDIAN;
-#elif __BYTE_ORDER == __BIG_ENDIAN
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 	enum btf_endianness endian = BTF_BIG_ENDIAN;
 #else
-#error "Unrecognized __BYTE_ORDER"
+#error "Unrecognized __BYTE_ORDER__"
 #endif
 	enum btf_endianness swap_endian = 1 - endian;
 	struct btf *btf = NULL, *swap_btf = NULL;
diff --git a/tools/testing/selftests/bpf/test_sysctl.c b/tools/testing/selftests/bpf/test_sysctl.c
index a20a919244c0..a3bb6d399daa 100644
--- a/tools/testing/selftests/bpf/test_sysctl.c
+++ b/tools/testing/selftests/bpf/test_sysctl.c
@@ -124,7 +124,7 @@ static struct sysctl_test tests[] = {
 		.descr = "ctx:write sysctl:write read ok narrow",
 		.insns = {
 			/* u64 w = (u16)write & 1; */
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 			BPF_LDX_MEM(BPF_H, BPF_REG_7, BPF_REG_1,
 				    offsetof(struct bpf_sysctl, write)),
 #else
@@ -184,7 +184,7 @@ static struct sysctl_test tests[] = {
 		.descr = "ctx:file_pos sysctl:read read ok narrow",
 		.insns = {
 			/* If (file_pos == X) */
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 			BPF_LDX_MEM(BPF_B, BPF_REG_7, BPF_REG_1,
 				    offsetof(struct bpf_sysctl, file_pos)),
 #else
diff --git a/tools/testing/selftests/bpf/verifier/ctx_skb.c b/tools/testing/selftests/bpf/verifier/ctx_skb.c
index 9e1a30b94197..83cecfbd6739 100644
--- a/tools/testing/selftests/bpf/verifier/ctx_skb.c
+++ b/tools/testing/selftests/bpf/verifier/ctx_skb.c
@@ -502,7 +502,7 @@
 	"check skb->hash byte load permitted",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct __sk_buff, hash)),
 #else
@@ -537,7 +537,7 @@
 	"check skb->hash byte load permitted 3",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct __sk_buff, hash) + 3),
 #else
@@ -646,7 +646,7 @@
 	"check skb->hash half load permitted",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct __sk_buff, hash)),
 #else
@@ -661,7 +661,7 @@
 	"check skb->hash half load permitted 2",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct __sk_buff, hash) + 2),
 #else
@@ -676,7 +676,7 @@
 	"check skb->hash half load not permitted, unaligned 1",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct __sk_buff, hash) + 1),
 #else
@@ -693,7 +693,7 @@
 	"check skb->hash half load not permitted, unaligned 3",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct __sk_buff, hash) + 3),
 #else
@@ -951,7 +951,7 @@
 	"check skb->data half load not permitted",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct __sk_buff, data)),
 #else
diff --git a/tools/testing/selftests/bpf/verifier/lwt.c b/tools/testing/selftests/bpf/verifier/lwt.c
index 2cab6a3966bb..5c8944d0b091 100644
--- a/tools/testing/selftests/bpf/verifier/lwt.c
+++ b/tools/testing/selftests/bpf/verifier/lwt.c
@@ -174,7 +174,7 @@
 	"check skb->tc_classid half load not permitted for lwt prog",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct __sk_buff, tc_classid)),
 #else
diff --git a/tools/testing/selftests/bpf/verifier/perf_event_sample_period.c b/tools/testing/selftests/bpf/verifier/perf_event_sample_period.c
index 471c1a5950d8..d8a9b1a1f9a2 100644
--- a/tools/testing/selftests/bpf/verifier/perf_event_sample_period.c
+++ b/tools/testing/selftests/bpf/verifier/perf_event_sample_period.c
@@ -2,7 +2,7 @@
 	"check bpf_perf_event_data->sample_period byte load permitted",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct bpf_perf_event_data, sample_period)),
 #else
@@ -18,7 +18,7 @@
 	"check bpf_perf_event_data->sample_period half load permitted",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct bpf_perf_event_data, sample_period)),
 #else
@@ -34,7 +34,7 @@
 	"check bpf_perf_event_data->sample_period word load permitted",
 	.insns = {
 	BPF_MOV64_IMM(BPF_REG_0, 0),
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 	BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
 		    offsetof(struct bpf_perf_event_data, sample_period)),
 #else
-- 
cgit v1.2.3


From 3e7ed9cebb551ce9bfbf2985da9cdadd8186e1eb Mon Sep 17 00:00:00 2001
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: Tue, 26 Oct 2021 03:08:30 +0200
Subject: selftests/seccomp: Use __BYTE_ORDER__

Use the compiler-defined __BYTE_ORDER__ instead of the libc-defined
__BYTE_ORDER for consistency.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211026010831.748682-6-iii@linux.ibm.com
---
 tools/testing/selftests/seccomp/seccomp_bpf.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index 1d64891e6492..d425688cf59c 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -276,12 +276,12 @@ int seccomp(unsigned int op, unsigned int flags, void *args)
 }
 #endif
 
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 #define syscall_arg(_n) (offsetof(struct seccomp_data, args[_n]))
-#elif __BYTE_ORDER == __BIG_ENDIAN
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 #define syscall_arg(_n) (offsetof(struct seccomp_data, args[_n]) + sizeof(__u32))
 #else
-#error "wut? Unknown __BYTE_ORDER?!"
+#error "wut? Unknown __BYTE_ORDER__?!"
 #endif
 
 #define SIBLING_EXIT_UNKILLED	0xbadbeef
-- 
cgit v1.2.3


From 2e2c6d3fb38344df92b63162a28ec09491cc0700 Mon Sep 17 00:00:00 2001
From: Ilya Leoshkevich <iii@linux.ibm.com>
Date: Tue, 26 Oct 2021 03:08:31 +0200
Subject: selftests/bpf: Fix test_core_reloc_mods on big-endian machines

This is the same as commit d164dd9a5c08 ("selftests/bpf: Fix
test_core_autosize on big-endian machines"), but for
test_core_reloc_mods.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211026010831.748682-7-iii@linux.ibm.com
---
 tools/testing/selftests/bpf/progs/test_core_reloc_mods.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c b/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c
index 8b533db4a7a5..b2ded497572a 100644
--- a/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c
+++ b/tools/testing/selftests/bpf/progs/test_core_reloc_mods.c
@@ -42,7 +42,16 @@ struct core_reloc_mods {
 	core_reloc_mods_substruct_t h;
 };
 
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 #define CORE_READ(dst, src) bpf_core_read(dst, sizeof(*(dst)), src)
+#else
+#define CORE_READ(dst, src) ({ \
+	int __sz = sizeof(*(dst)) < sizeof(*(src)) ? sizeof(*(dst)) : \
+						     sizeof(*(src)); \
+	bpf_core_read((char *)(dst) + sizeof(*(dst)) - __sz, __sz, \
+		      (const char *)(src) + sizeof(*(src)) - __sz); \
+})
+#endif
 
 SEC("raw_tracepoint/sys_enter")
 int test_core_mods(void *ctx)
-- 
cgit v1.2.3


From b4e87072762d063f9c20ba0ab2120e1910fa379f Mon Sep 17 00:00:00 2001
From: Song Liu <songliubraving@fb.com>
Date: Mon, 25 Oct 2021 17:07:33 -0700
Subject: selftests/bpf: Skip all serial_test_get_branch_snapshot in vm

Skipping the second half of the test is not enough to silent the warning
in dmesg. Skip the whole test before we can either properly silent the
warning in kernel, or fix LBR snapshot for VM.

Fixes: 025bd7c753aa ("selftests/bpf: Add test for bpf_get_branch_snapshot")
Fixes: aa67fdb46436 ("selftests/bpf: Skip the second half of get_branch_snapshot in vm")
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211026000733.477714-1-songliubraving@fb.com
---
 .../selftests/bpf/prog_tests/get_branch_snapshot.c       | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
index d6d70a359aeb..81402e443984 100644
--- a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
+++ b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
@@ -78,6 +78,12 @@ void serial_test_get_branch_snapshot(void)
 	struct get_branch_snapshot *skel = NULL;
 	int err;
 
+	/* Skip the test before we fix LBR snapshot for hypervisor. */
+	if (is_hypervisor()) {
+		test__skip();
+		return;
+	}
+
 	if (create_perf_events()) {
 		test__skip();  /* system doesn't support LBR */
 		goto cleanup;
@@ -107,16 +113,6 @@ void serial_test_get_branch_snapshot(void)
 		goto cleanup;
 	}
 
-	if (is_hypervisor()) {
-		/* As of today, LBR in hypervisor cannot be stopped before
-		 * too many entries are flushed. Skip the hit/waste test
-		 * for now in hypervisor until we optimize the LBR in
-		 * hypervisor.
-		 */
-		test__skip();
-		goto cleanup;
-	}
-
 	ASSERT_GT(skel->bss->test1_hits, 6, "find_looptest_in_lbr");
 
 	/* Given we stop LBR in software, we will waste a few entries.
-- 
cgit v1.2.3


From 20d1b54a52bd9a1d5d23a45dab75993ce2f1d617 Mon Sep 17 00:00:00 2001
From: Song Liu <songliubraving@fb.com>
Date: Fri, 22 Oct 2021 16:48:14 -0700
Subject: selftests/bpf: Guess function end for test_get_branch_snapshot

Function in modules could appear in /proc/kallsyms in random order.

ffffffffa02608a0 t bpf_testmod_loop_test
ffffffffa02600c0 t __traceiter_bpf_testmod_test_writable_bare
ffffffffa0263b60 d __tracepoint_bpf_testmod_test_write_bare
ffffffffa02608c0 T bpf_testmod_test_read
ffffffffa0260d08 t __SCT__tp_func_bpf_testmod_test_writable_bare
ffffffffa0263300 d __SCK__tp_func_bpf_testmod_test_read
ffffffffa0260680 T bpf_testmod_test_write
ffffffffa0260860 t bpf_testmod_test_mod_kfunc

Therefore, we cannot reliably use kallsyms_find_next() to find the end of
a function. Replace it with a simple guess (start + 128). This is good
enough for this test.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211022234814.318457-1-songliubraving@fb.com
---
 .../selftests/bpf/prog_tests/get_branch_snapshot.c |  7 +++--
 tools/testing/selftests/bpf/trace_helpers.c        | 36 ----------------------
 tools/testing/selftests/bpf/trace_helpers.h        |  5 ---
 3 files changed, 4 insertions(+), 44 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
index 81402e443984..3948da12a528 100644
--- a/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
+++ b/tools/testing/selftests/bpf/prog_tests/get_branch_snapshot.c
@@ -97,9 +97,10 @@ void serial_test_get_branch_snapshot(void)
 	if (!ASSERT_OK(err, "kallsyms_find"))
 		goto cleanup;
 
-	err = kallsyms_find_next("bpf_testmod_loop_test", &skel->bss->address_high);
-	if (!ASSERT_OK(err, "kallsyms_find_next"))
-		goto cleanup;
+	/* Just a guess for the end of this function, as module functions
+	 * in /proc/kallsyms could come in any order.
+	 */
+	skel->bss->address_high = skel->bss->address_low + 128;
 
 	err = get_branch_snapshot__attach(skel);
 	if (!ASSERT_OK(err, "get_branch_snapshot__attach"))
diff --git a/tools/testing/selftests/bpf/trace_helpers.c b/tools/testing/selftests/bpf/trace_helpers.c
index 5100a169b72b..7b7f918eda77 100644
--- a/tools/testing/selftests/bpf/trace_helpers.c
+++ b/tools/testing/selftests/bpf/trace_helpers.c
@@ -118,42 +118,6 @@ out:
 	return err;
 }
 
-/* find the address of the next symbol of the same type, this can be used
- * to determine the end of a function.
- */
-int kallsyms_find_next(const char *sym, unsigned long long *addr)
-{
-	char type, found_type, name[500];
-	unsigned long long value;
-	bool found = false;
-	int err = 0;
-	FILE *f;
-
-	f = fopen("/proc/kallsyms", "r");
-	if (!f)
-		return -EINVAL;
-
-	while (fscanf(f, "%llx %c %499s%*[^\n]\n", &value, &type, name) > 0) {
-		/* Different types of symbols in kernel modules are mixed
-		 * in /proc/kallsyms. Only return the next matching type.
-		 * Use tolower() for type so that 'T' matches 't'.
-		 */
-		if (found && found_type == tolower(type)) {
-			*addr = value;
-			goto out;
-		}
-		if (strcmp(name, sym) == 0) {
-			found = true;
-			found_type = tolower(type);
-		}
-	}
-	err = -ENOENT;
-
-out:
-	fclose(f);
-	return err;
-}
-
 void read_trace_pipe(void)
 {
 	int trace_fd;
diff --git a/tools/testing/selftests/bpf/trace_helpers.h b/tools/testing/selftests/bpf/trace_helpers.h
index bc8ed86105d9..d907b445524d 100644
--- a/tools/testing/selftests/bpf/trace_helpers.h
+++ b/tools/testing/selftests/bpf/trace_helpers.h
@@ -16,11 +16,6 @@ long ksym_get_addr(const char *name);
 /* open kallsyms and find addresses on the fly, faster than load + search. */
 int kallsyms_find(const char *sym, unsigned long long *addr);
 
-/* find the address of the next symbol, this can be used to determine the
- * end of a function
- */
-int kallsyms_find_next(const char *sym, unsigned long long *addr);
-
 void read_trace_pipe(void);
 
 ssize_t get_uprobe_offset(const void *addr, ssize_t base);
-- 
cgit v1.2.3


From 152f98e7c5cb472e37d44ff8bb07029e77e9508d Mon Sep 17 00:00:00 2001
From: Danielle Ratson <danieller@nvidia.com>
Date: Tue, 26 Oct 2021 12:42:22 +0300
Subject: selftests: mlxsw: Add a scale test for RIF MAC profiles

Query the maximum number of supported RIF MAC profiles using
devlink-resource and verify that all available MAC profiles can be utilized
and that an error is generated when user space tries to exceed this number.

Output example in Spectrum-2:

$ TESTS='rif_mac_profile' ./resource_scale.sh
TEST: 'rif_mac_profile' 4                                           [ OK ]
TEST: 'rif_mac_profile' overflow 5                                  [ OK ]

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../drivers/net/mlxsw/rif_mac_profile_scale.sh     | 72 ++++++++++++++++++++++
 .../drivers/net/mlxsw/spectrum-2/resource_scale.sh |  2 +-
 .../net/mlxsw/spectrum-2/rif_mac_profile_scale.sh  | 16 +++++
 .../drivers/net/mlxsw/spectrum/resource_scale.sh   |  2 +-
 .../net/mlxsw/spectrum/rif_mac_profile_scale.sh    | 16 +++++
 5 files changed, 106 insertions(+), 2 deletions(-)
 create mode 100644 tools/testing/selftests/drivers/net/mlxsw/rif_mac_profile_scale.sh
 create mode 100644 tools/testing/selftests/drivers/net/mlxsw/spectrum-2/rif_mac_profile_scale.sh
 create mode 100644 tools/testing/selftests/drivers/net/mlxsw/spectrum/rif_mac_profile_scale.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profile_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profile_scale.sh
new file mode 100644
index 000000000000..71e7681f15f6
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profile_scale.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# Test for RIF MAC profiles resource. The test adds VLAN netdevices according to
+# the maximum number of RIF MAC profiles, sets each of them with a random
+# MAC address, and checks that eventually the number of occupied RIF MAC
+# profiles equals the maximum number of RIF MAC profiles.
+
+
+RIF_MAC_PROFILE_NUM_NETIFS=2
+
+rif_mac_profiles_create()
+{
+	local count=$1; shift
+	local should_fail=$1; shift
+	local batch_file="$(mktemp)"
+
+	for ((i = 1; i <= count; i++)); do
+		vlan=$(( i*10 ))
+		m=$(( i*11 ))
+
+		cat >> $batch_file <<-EOF
+			link add link $h1 name $h1.$vlan \
+				address 00:$m:$m:$m:$m:$m type vlan id $vlan
+			address add 192.0.$m.1/24 dev $h1.$vlan
+		EOF
+	done
+
+	ip -b $batch_file &> /dev/null
+	check_err_fail $should_fail $? "RIF creation"
+
+	rm -f $batch_file
+}
+
+rif_mac_profile_test()
+{
+	local count=$1; shift
+	local should_fail=$1; shift
+
+	rif_mac_profiles_create $count $should_fail
+
+	occ=$(devlink -j resource show $DEVLINK_DEV \
+	      | jq '.[][][] | select(.name=="rif_mac_profiles") |.["occ"]')
+
+	[[ $occ -eq $count ]]
+	check_err_fail $should_fail $? "Attempt to use $count profiles (actual result $occ)"
+}
+
+rif_mac_profile_setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	h2=${NETIFS[p2]}
+
+	# Disable IPv6 on the two interfaces to avoid IPv6 link-local addresses
+	# being generated and RIFs being created.
+	sysctl_set net.ipv6.conf.$h1.disable_ipv6 1
+	sysctl_set net.ipv6.conf.$h2.disable_ipv6 1
+
+	ip link set $h1 up
+	ip link set $h2 up
+}
+
+rif_mac_profile_cleanup()
+{
+	pre_cleanup
+
+	ip link set $h2 down
+	ip link set $h1 down
+
+	sysctl_restore net.ipv6.conf.$h2.disable_ipv6
+	sysctl_restore net.ipv6.conf.$h1.disable_ipv6
+}
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
index 02b7eea19743..e9f65bd2e299 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/resource_scale.sh
@@ -25,7 +25,7 @@ cleanup()
 
 trap cleanup EXIT
 
-ALL_TESTS="router tc_flower mirror_gre tc_police port"
+ALL_TESTS="router tc_flower mirror_gre tc_police port rif_mac_profile"
 for current_test in ${TESTS:-$ALL_TESTS}; do
 	RET_FIN=0
 	source ${current_test}_scale.sh
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/rif_mac_profile_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/rif_mac_profile_scale.sh
new file mode 100644
index 000000000000..303d7cbe3c45
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum-2/rif_mac_profile_scale.sh
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+source ../rif_mac_profile_scale.sh
+
+rif_mac_profile_get_target()
+{
+	local should_fail=$1
+	local target
+
+	target=$(devlink_resource_size_get rif_mac_profiles)
+
+	if ((! should_fail)); then
+		echo $target
+	else
+		echo $((target + 1))
+	fi
+}
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
index 685dfb3478b3..bcb110e830ce 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/resource_scale.sh
@@ -22,7 +22,7 @@ cleanup()
 devlink_sp_read_kvd_defaults
 trap cleanup EXIT
 
-ALL_TESTS="router tc_flower mirror_gre tc_police port"
+ALL_TESTS="router tc_flower mirror_gre tc_police port rif_mac_profile"
 for current_test in ${TESTS:-$ALL_TESTS}; do
 	RET_FIN=0
 	source ${current_test}_scale.sh
diff --git a/tools/testing/selftests/drivers/net/mlxsw/spectrum/rif_mac_profile_scale.sh b/tools/testing/selftests/drivers/net/mlxsw/spectrum/rif_mac_profile_scale.sh
new file mode 100644
index 000000000000..303d7cbe3c45
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/spectrum/rif_mac_profile_scale.sh
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+source ../rif_mac_profile_scale.sh
+
+rif_mac_profile_get_target()
+{
+	local should_fail=$1
+	local target
+
+	target=$(devlink_resource_size_get rif_mac_profiles)
+
+	if ((! should_fail)); then
+		echo $target
+	else
+		echo $((target + 1))
+	fi
+}
-- 
cgit v1.2.3


From a10b7bacde60894b999cf9b5fa194ad55f7ded41 Mon Sep 17 00:00:00 2001
From: Danielle Ratson <danieller@nvidia.com>
Date: Tue, 26 Oct 2021 12:42:23 +0300
Subject: selftests: mlxsw: Add forwarding test for RIF MAC profiles

Verify that MAC profile changes are indeed applied and that packets are
forwarded with the correct source MAC.

Output example:

$ ./rif_mac_profiles.sh
TEST: h1->h2: new mac profile                                       [ OK ]
TEST: h2->h1: new mac profile                                       [ OK ]
TEST: h1->h2: edit mac profile                                      [ OK ]
TEST: h2->h1: edit mac profile                                      [ OK ]

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../drivers/net/mlxsw/rif_mac_profiles.sh          | 213 +++++++++++++++++++++
 1 file changed, 213 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/mlxsw/rif_mac_profiles.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profiles.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profiles.sh
new file mode 100755
index 000000000000..c18340cee55d
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profiles.sh
@@ -0,0 +1,213 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+lib_dir=$(dirname $0)/../../../net/forwarding
+
+ALL_TESTS="
+	mac_profile_test
+"
+NUM_NETIFS=4
+source $lib_dir/lib.sh
+source $lib_dir/tc_common.sh
+source $lib_dir/devlink_lib.sh
+
+h1_create()
+{
+	simple_if_init $h1 192.0.2.1/24
+	ip route add 198.51.100.0/24 vrf v$h1 nexthop via 192.0.2.2
+
+	tc qdisc add dev $h1 ingress
+}
+
+h1_destroy()
+{
+	tc qdisc del dev $h1 ingress
+
+	ip route del 198.51.100.0/24 vrf v$h1
+	simple_if_fini $h1 192.0.2.1/24
+}
+
+h2_create()
+{
+	simple_if_init $h2 198.51.100.1/24
+	ip route add 192.0.2.0/24 vrf v$h2 nexthop via 198.51.100.2
+
+	tc qdisc add dev $h2 ingress
+}
+
+h2_destroy()
+{
+	tc qdisc del dev $h2 ingress
+
+	ip route del 192.0.2.0/24 vrf v$h2
+	simple_if_fini $h2 198.51.100.1/24
+}
+
+router_create()
+{
+	ip link set dev $rp1 up
+	ip link set dev $rp2 up
+
+	tc qdisc add dev $rp1 clsact
+	tc qdisc add dev $rp2 clsact
+	ip address add 192.0.2.2/24 dev $rp1
+	ip address add 198.51.100.2/24 dev $rp2
+}
+
+router_destroy()
+{
+	ip address del 198.51.100.2/24 dev $rp2
+	ip address del 192.0.2.2/24 dev $rp1
+	tc qdisc del dev $rp2 clsact
+	tc qdisc del dev $rp1 clsact
+
+	ip link set dev $rp2 down
+	ip link set dev $rp1 down
+}
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	rp1=${NETIFS[p2]}
+
+	rp2=${NETIFS[p3]}
+	h2=${NETIFS[p4]}
+
+	vrf_prepare
+
+	h1_create
+	h2_create
+
+	router_create
+
+	forwarding_enable
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	forwarding_restore
+
+	router_destroy
+
+	h2_destroy
+	h1_destroy
+
+	vrf_cleanup
+}
+
+h1_to_h2()
+{
+	local test_name=$@; shift
+	local smac=$(mac_get $rp2)
+
+	RET=0
+
+	# Replace neighbour to avoid first packet being forwarded in software
+	ip neigh replace dev $rp2 198.51.100.1 lladdr $(mac_get $h2)
+
+	# Add a filter to ensure that packets are forwarded in hardware. Cannot
+	# match on source MAC because it is not set in eACL after routing
+	tc filter add dev $rp2 egress proto ip pref 1 handle 101 \
+		flower skip_sw ip_proto udp src_port 12345 dst_port 54321 \
+		action pass
+
+	# Add a filter to ensure that packets are received with the correct
+	# source MAC
+	tc filter add dev $h2 ingress proto ip pref 1 handle 101 \
+		flower skip_sw src_mac $smac ip_proto udp src_port 12345 \
+		dst_port 54321 action pass
+
+	$MZ $h1 -a own -b $(mac_get $rp1) -t udp "sp=12345,dp=54321" \
+		-A 192.0.2.1 -B 198.51.100.1 -c 10 -p 100 -d 1msec -q
+
+	tc_check_packets "dev $rp2 egress" 101 10
+	check_err $? "packets not forwarded in hardware"
+
+	tc_check_packets "dev $h2 ingress" 101 10
+	check_err $? "packets not forwarded with correct source mac"
+
+	log_test "h1->h2: $test_name"
+
+	tc filter del dev $h2 ingress protocol ip pref 1 handle 101 flower
+	tc filter del dev $rp2 egress protocol ip pref 1 handle 101 flower
+	ip neigh del dev $rp2 198.51.100.1 lladdr $(mac_get $h2)
+}
+
+h2_to_h1()
+{
+	local test_name=$@; shift
+	local rp1_mac=$(mac_get $rp1)
+
+	RET=0
+
+	ip neigh replace dev $rp1 192.0.2.1 lladdr $(mac_get $h1)
+
+	tc filter add dev $rp1 egress proto ip pref 1 handle 101 \
+		flower skip_sw ip_proto udp src_port 54321 dst_port 12345 \
+		action pass
+
+	tc filter add dev $h1 ingress proto ip pref 1 handle 101 \
+		flower skip_sw src_mac $rp1_mac ip_proto udp src_port 54321 \
+		dst_port 12345 action pass
+
+	$MZ $h2 -a own -b $(mac_get $rp2) -t udp "sp=54321,dp=12345" \
+		-A 198.51.100.1 -B 192.0.2.1 -c 10 -p 100 -d 1msec -q
+
+	tc_check_packets "dev $rp1 egress" 101 10
+	check_err $? "packets not forwarded in hardware"
+
+	tc_check_packets "dev $h1 ingress" 101 10
+	check_err $? "packets not forwarded with correct source mac"
+
+	log_test "h2->h1: $test_name"
+
+	tc filter del dev $h1 ingress protocol ip pref 1 handle 101 flower
+	tc filter del dev $rp1 egress protocol ip pref 1 handle 101 flower
+	ip neigh del dev $rp1 192.0.2.1 lladdr $(mac_get $h1)
+}
+
+smac_test()
+{
+	local test_name=$@; shift
+
+	# Test that packets forwarded to $h2 via $rp2 are forwarded with the
+	# current source MAC of $rp2
+	h1_to_h2 $test_name
+
+	# Test that packets forwarded to $h1 via $rp1 are forwarded with the
+	# current source MAC of $rp1. This MAC is never changed during the test,
+	# but given the shared nature of MAC profile, the point is to see that
+	# changes to the MAC of $rp2 do not affect that of $rp1
+	h2_to_h1 $test_name
+}
+
+mac_profile_test()
+{
+	local rp2_mac=$(mac_get $rp2)
+
+	# Test behavior when the RIF backing $rp2 is transitioned to use
+	# a new MAC profile
+	ip link set dev $rp2 addr 00:11:22:33:44:55
+	smac_test "new mac profile"
+
+	# Test behavior when the MAC profile used by the RIF is edited
+	ip link set dev $rp2 address 00:22:22:22:22:22
+	smac_test "edit mac profile"
+
+	# Restore original MAC
+	ip link set dev $rp2 addr $rp2_mac
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+
+mac_profiles=$(devlink_resource_size_get rif_mac_profiles)
+if [[ $mac_profiles -ne 1 ]]; then
+	tests_run
+fi
+
+exit $EXIT_STATUS
-- 
cgit v1.2.3


From 20d446db6144ff2d60dfebb9db7bea885d7b726b Mon Sep 17 00:00:00 2001
From: Danielle Ratson <danieller@nvidia.com>
Date: Tue, 26 Oct 2021 12:42:24 +0300
Subject: selftests: Add an occupancy test for RIF MAC profiles

When all the RIF MAC profiles are in use, test that it is possible to
change the MAC of a netdev (i.e., a RIF) when its MAC profile is not
shared with other RIFs. Test that replacement fails when the MAC profile
is shared.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../drivers/net/mlxsw/rif_mac_profiles_occ.sh      | 117 +++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100755 tools/testing/selftests/drivers/net/mlxsw/rif_mac_profiles_occ.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profiles_occ.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profiles_occ.sh
new file mode 100755
index 000000000000..b513f64d9092
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/rif_mac_profiles_occ.sh
@@ -0,0 +1,117 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+lib_dir=$(dirname $0)/../../../net/forwarding
+
+ALL_TESTS="
+	rif_mac_profile_edit_test
+"
+NUM_NETIFS=2
+source $lib_dir/lib.sh
+source $lib_dir/devlink_lib.sh
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	h2=${NETIFS[p2]}
+
+	# Disable IPv6 on the two interfaces to avoid IPv6 link-local addresses
+	# being generated and RIFs being created
+	sysctl_set net.ipv6.conf.$h1.disable_ipv6 1
+	sysctl_set net.ipv6.conf.$h2.disable_ipv6 1
+
+	ip link set $h1 up
+	ip link set $h2 up
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	ip link set $h2 down
+	ip link set $h1 down
+
+	sysctl_restore net.ipv6.conf.$h2.disable_ipv6
+	sysctl_restore net.ipv6.conf.$h1.disable_ipv6
+
+	# Reload in order to clean all the RIFs and RIF MAC profiles created
+	devlink_reload
+}
+
+create_max_rif_mac_profiles()
+{
+	local count=$1; shift
+	local batch_file="$(mktemp)"
+
+	for ((i = 1; i <= count; i++)); do
+		vlan=$(( i*10 ))
+		m=$(( i*11 ))
+
+		cat >> $batch_file <<-EOF
+			link add link $h1 name $h1.$vlan \
+				address 00:$m:$m:$m:$m:$m type vlan id $vlan
+			address add 192.0.$m.1/24 dev $h1.$vlan
+		EOF
+	done
+
+	ip -b $batch_file &> /dev/null
+	rm -f $batch_file
+}
+
+rif_mac_profile_replacement_test()
+{
+	local h1_10_mac=$(mac_get $h1.10)
+
+	RET=0
+
+	ip link set $h1.10 address 00:12:34:56:78:99
+	check_err $?
+
+	log_test "RIF MAC profile replacement"
+
+	ip link set $h1.10 address $h1_10_mac
+}
+
+rif_mac_profile_shared_replacement_test()
+{
+	local count=$1; shift
+	local i=$((count + 1))
+	local vlan=$(( i*10 ))
+	local m=11
+
+	RET=0
+
+	# Create a VLAN netdevice that has the same MAC as the first one.
+	ip link add link $h1 name $h1.$vlan address 00:$m:$m:$m:$m:$m \
+		type vlan id $vlan
+	ip address add 192.0.$m.1/24 dev $h1.$vlan
+
+	# MAC replacement should fail because all the MAC profiles are in use
+	# and the profile is shared between multiple RIFs
+	m=$(( i*11 ))
+	ip link set $h1.$vlan address 00:$m:$m:$m:$m:$m &> /dev/null
+	check_fail $?
+
+	log_test "RIF MAC profile shared replacement"
+
+	ip link del dev $h1.$vlan
+}
+
+rif_mac_profile_edit_test()
+{
+	local count=$(devlink_resource_size_get rif_mac_profiles)
+
+	create_max_rif_mac_profiles $count
+
+	rif_mac_profile_replacement_test
+	rif_mac_profile_shared_replacement_test $count
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+
+tests_run
+
+exit $EXIT_STATUS
-- 
cgit v1.2.3


From c24dbf3d4f884527bce85417db3065fd5d65dc89 Mon Sep 17 00:00:00 2001
From: Danielle Ratson <danieller@nvidia.com>
Date: Tue, 26 Oct 2021 12:42:25 +0300
Subject: selftests: mlxsw: Remove deprecated test cases

After adding the previous patches, the constraint that all the router
interface MAC addresses have the same prefix is no longer relevant.

Remove the test cases that validated that this constraint is honored.

Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../selftests/drivers/net/mlxsw/rtnetlink.sh       | 90 ----------------------
 1 file changed, 90 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
index 1075d70e8f25..04f03ae9d8fb 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/rtnetlink.sh
@@ -10,9 +10,7 @@
 lib_dir=$(dirname $0)/../../../net/forwarding
 
 ALL_TESTS="
-	rif_set_addr_test
 	rif_vrf_set_addr_test
-	rif_inherit_bridge_addr_test
 	rif_non_inherit_bridge_addr_test
 	vlan_interface_deletion_test
 	bridge_deletion_test
@@ -60,55 +58,6 @@ cleanup()
 	ip link set dev $swp1 down
 }
 
-rif_set_addr_test()
-{
-	local swp1_mac=$(mac_get $swp1)
-	local swp2_mac=$(mac_get $swp2)
-
-	RET=0
-
-	# $swp1 and $swp2 likely got their IPv6 local addresses already, but
-	# here we need to test the transition to RIF.
-	ip addr flush dev $swp1
-	ip addr flush dev $swp2
-	sleep .1
-
-	ip addr add dev $swp1 192.0.2.1/28
-	check_err $?
-
-	ip link set dev $swp1 addr 00:11:22:33:44:55
-	check_err $?
-
-	# IP address enablement should be rejected if the MAC address prefix
-	# doesn't match other RIFs.
-	ip addr add dev $swp2 192.0.2.2/28 &>/dev/null
-	check_fail $? "IP address addition passed for a device with a wrong MAC"
-	ip addr add dev $swp2 192.0.2.2/28 2>&1 >/dev/null \
-	    | grep -q mlxsw_spectrum
-	check_err $? "no extack for IP address addition"
-
-	ip link set dev $swp2 addr 00:11:22:33:44:66
-	check_err $?
-	ip addr add dev $swp2 192.0.2.2/28 &>/dev/null
-	check_err $?
-
-	# Change of MAC address of a RIF should be forbidden if the new MAC
-	# doesn't share the prefix with other MAC addresses.
-	ip link set dev $swp2 addr 00:11:22:33:00:66 &>/dev/null
-	check_fail $? "change of MAC address passed for a wrong MAC"
-	ip link set dev $swp2 addr 00:11:22:33:00:66 2>&1 >/dev/null \
-	    | grep -q mlxsw_spectrum
-	check_err $? "no extack for MAC address change"
-
-	log_test "RIF - bad MAC change"
-
-	ip addr del dev $swp2 192.0.2.2/28
-	ip addr del dev $swp1 192.0.2.1/28
-
-	ip link set dev $swp2 addr $swp2_mac
-	ip link set dev $swp1 addr $swp1_mac
-}
-
 rif_vrf_set_addr_test()
 {
 	# Test that it is possible to set an IP address on a VRF upper despite
@@ -128,45 +77,6 @@ rif_vrf_set_addr_test()
 	ip link del dev vrf-test
 }
 
-rif_inherit_bridge_addr_test()
-{
-	RET=0
-
-	# Create first RIF
-	ip addr add dev $swp1 192.0.2.1/28
-	check_err $?
-
-	# Create a FID RIF
-	ip link add name br1 up type bridge vlan_filtering 0
-	ip link set dev $swp2 master br1
-	ip addr add dev br1 192.0.2.17/28
-	check_err $?
-
-	# Prepare a device with a low MAC address
-	ip link add name d up type dummy
-	ip link set dev d addr 00:11:22:33:44:55
-
-	# Attach the device to br1. That prompts bridge address change, which
-	# should be vetoed, thus preventing the attachment.
-	ip link set dev d master br1 &>/dev/null
-	check_fail $? "Device with low MAC was permitted to attach a bridge with RIF"
-	ip link set dev d master br1 2>&1 >/dev/null \
-	    | grep -q mlxsw_spectrum
-	check_err $? "no extack for bridge attach rejection"
-
-	ip link set dev $swp2 addr 00:11:22:33:44:55 &>/dev/null
-	check_fail $? "Changing swp2's MAC address permitted"
-	ip link set dev $swp2 addr 00:11:22:33:44:55 2>&1 >/dev/null \
-	    | grep -q mlxsw_spectrum
-	check_err $? "no extack for bridge port MAC address change rejection"
-
-	log_test "RIF - attach port with bad MAC to bridge"
-
-	ip link del dev d
-	ip link del dev br1
-	ip addr del dev $swp1 192.0.2.1/28
-}
-
 rif_non_inherit_bridge_addr_test()
 {
 	local swp2_mac=$(mac_get $swp2)
-- 
cgit v1.2.3


From 547208a386fa2066fa2d6d48bda145f78c38604f Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Mon, 25 Oct 2021 15:33:42 -0700
Subject: selfetests/bpf: Update vmtest.sh defaults

Increase memory to 4G, 8 SMP core with host cpu passthrough. This
make it run faster in parallel mode and more likely to succeed.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211025223345.2136168-2-fallentree@fb.com
---
 tools/testing/selftests/bpf/vmtest.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/vmtest.sh b/tools/testing/selftests/bpf/vmtest.sh
index 8889b3f55236..027198768fad 100755
--- a/tools/testing/selftests/bpf/vmtest.sh
+++ b/tools/testing/selftests/bpf/vmtest.sh
@@ -224,10 +224,10 @@ EOF
 		-nodefaults \
 		-display none \
 		-serial mon:stdio \
-		-cpu kvm64 \
+		-cpu host \
 		-enable-kvm \
-		-smp 4 \
-		-m 2G \
+		-smp 8 \
+		-m 4G \
 		-drive file="${rootfs_img}",format=raw,index=1,media=disk,if=virtio,cache=none \
 		-kernel "${kernel_bzimage}" \
 		-append "root=/dev/vda rw console=ttyS0,115200"
-- 
cgit v1.2.3


From 9e7240fb2d6e0ed3944724ae1d224fdf22b3dea3 Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Mon, 25 Oct 2021 15:33:44 -0700
Subject: selftests/bpf: Fix attach_probe in parallel mode

This patch makes attach_probe uses its own method as attach point,
avoiding conflict with other tests like bpf_cookie.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211025223345.2136168-4-fallentree@fb.com
---
 tools/testing/selftests/bpf/prog_tests/attach_probe.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/attach_probe.c b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
index 6c511dcd1465..d0bd51eb23c8 100644
--- a/tools/testing/selftests/bpf/prog_tests/attach_probe.c
+++ b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
@@ -5,6 +5,11 @@
 /* this is how USDT semaphore is actually defined, except volatile modifier */
 volatile unsigned short uprobe_ref_ctr __attribute__((unused)) __attribute((section(".probes")));
 
+/* attach point */
+static void method(void) {
+	return ;
+}
+
 void test_attach_probe(void)
 {
 	DECLARE_LIBBPF_OPTS(bpf_uprobe_opts, uprobe_opts);
@@ -33,7 +38,7 @@ void test_attach_probe(void)
 	if (CHECK(base_addr < 0, "get_base_addr",
 		  "failed to find base addr: %zd", base_addr))
 		return;
-	uprobe_offset = get_uprobe_offset(&get_base_addr, base_addr);
+	uprobe_offset = get_uprobe_offset(&method, base_addr);
 
 	ref_ctr_offset = get_rel_offset((uintptr_t)&uprobe_ref_ctr);
 	if (!ASSERT_GE(ref_ctr_offset, 0, "ref_ctr_offset"))
@@ -98,7 +103,7 @@ void test_attach_probe(void)
 		goto cleanup;
 
 	/* trigger & validate uprobe & uretprobe */
-	get_base_addr();
+	method();
 
 	if (CHECK(skel->bss->uprobe_res != 3, "check_uprobe_res",
 		  "wrong uprobe res: %d\n", skel->bss->uprobe_res))
-- 
cgit v1.2.3


From e1ef62a4dd0e66ede4e73791ec1bcec947d4d0b3 Mon Sep 17 00:00:00 2001
From: Yucong Sun <sunyucong@gmail.com>
Date: Mon, 25 Oct 2021 15:33:45 -0700
Subject: selftests/bpf: Adding a namespace reset for tc_redirect

This patch delete ns_src/ns_dst/ns_redir namespaces before recreating
them, making the test more robust.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211025223345.2136168-5-fallentree@fb.com
---
 tools/testing/selftests/bpf/prog_tests/tc_redirect.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
index 53672634bc52..4b18b73df10b 100644
--- a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
@@ -176,6 +176,18 @@ static int netns_setup_namespaces(const char *verb)
 	return 0;
 }
 
+static void netns_setup_namespaces_nofail(const char *verb)
+{
+	const char * const *ns = namespaces;
+	char cmd[128];
+
+	while (*ns) {
+		snprintf(cmd, sizeof(cmd), "ip netns %s %s > /dev/null 2>&1", verb, *ns);
+		system(cmd);
+		ns++;
+	}
+}
+
 struct netns_setup_result {
 	int ifindex_veth_src_fwd;
 	int ifindex_veth_dst_fwd;
@@ -762,6 +774,8 @@ fail:
 
 static void *test_tc_redirect_run_tests(void *arg)
 {
+	netns_setup_namespaces_nofail("delete");
+
 	RUN_TEST(tc_redirect_peer);
 	RUN_TEST(tc_redirect_peer_l3);
 	RUN_TEST(tc_redirect_neigh);
-- 
cgit v1.2.3


From ed9109ad643cfbe69670a37cdbaf2da9f409fed0 Mon Sep 17 00:00:00 2001
From: Joanne Koong <joannekoong@fb.com>
Date: Wed, 27 Oct 2021 16:45:02 -0700
Subject: selftests/bpf: Add bloom filter map test cases

This patch adds test cases for bpf bloom filter maps. They include tests
checking against invalid operations by userspace, tests for using the
bloom filter map as an inner map, and a bpf program that queries the
bloom filter map for values added by a userspace program.

Signed-off-by: Joanne Koong <joannekoong@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211027234504.30744-4-joannekoong@fb.com
---
 .../selftests/bpf/prog_tests/bloom_filter_map.c    | 204 +++++++++++++++++++++
 .../testing/selftests/bpf/progs/bloom_filter_map.c |  82 +++++++++
 2 files changed, 286 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
 create mode 100644 tools/testing/selftests/bpf/progs/bloom_filter_map.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c b/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
new file mode 100644
index 000000000000..9aa3fbed918b
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
@@ -0,0 +1,204 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include <sys/syscall.h>
+#include <test_progs.h>
+#include "bloom_filter_map.skel.h"
+
+static void test_fail_cases(void)
+{
+	struct bpf_create_map_attr xattr = {
+		.name = "bloom_filter_map",
+		.map_type = BPF_MAP_TYPE_BLOOM_FILTER,
+		.max_entries = 100,
+		.value_size = 11,
+	};
+	__u32 value;
+	int fd, err;
+
+	/* Invalid key size */
+	xattr.key_size = 4;
+	fd = bpf_create_map_xattr(&xattr);
+	if (!ASSERT_LT(fd, 0, "bpf_create_map bloom filter invalid key size"))
+		close(fd);
+	xattr.key_size = 0;
+
+	/* Invalid value size */
+	xattr.value_size = 0;
+	fd = bpf_create_map_xattr(&xattr);
+	if (!ASSERT_LT(fd, 0, "bpf_create_map bloom filter invalid value size 0"))
+		close(fd);
+	xattr.value_size = 11;
+
+	/* Invalid max entries size */
+	xattr.max_entries = 0;
+	fd = bpf_create_map_xattr(&xattr);
+	if (!ASSERT_LT(fd, 0, "bpf_create_map bloom filter invalid max entries size"))
+		close(fd);
+	xattr.max_entries = 100;
+
+	/* Bloom filter maps do not support BPF_F_NO_PREALLOC */
+	xattr.map_flags = BPF_F_NO_PREALLOC;
+	fd = bpf_create_map_xattr(&xattr);
+	if (!ASSERT_LT(fd, 0, "bpf_create_map bloom filter invalid flags"))
+		close(fd);
+	xattr.map_flags = 0;
+
+	fd = bpf_create_map_xattr(&xattr);
+	if (!ASSERT_GE(fd, 0, "bpf_create_map bloom filter"))
+		return;
+
+	/* Test invalid flags */
+	err = bpf_map_update_elem(fd, NULL, &value, -1);
+	ASSERT_EQ(err, -EINVAL, "bpf_map_update_elem bloom filter invalid flags");
+
+	err = bpf_map_update_elem(fd, NULL, &value, BPF_EXIST);
+	ASSERT_EQ(err, -EINVAL, "bpf_map_update_elem bloom filter invalid flags");
+
+	err = bpf_map_update_elem(fd, NULL, &value, BPF_F_LOCK);
+	ASSERT_EQ(err, -EINVAL, "bpf_map_update_elem bloom filter invalid flags");
+
+	err = bpf_map_update_elem(fd, NULL, &value, BPF_NOEXIST);
+	ASSERT_EQ(err, -EINVAL, "bpf_map_update_elem bloom filter invalid flags");
+
+	err = bpf_map_update_elem(fd, NULL, &value, 10000);
+	ASSERT_EQ(err, -EINVAL, "bpf_map_update_elem bloom filter invalid flags");
+
+	close(fd);
+}
+
+static void check_bloom(struct bloom_filter_map *skel)
+{
+	struct bpf_link *link;
+
+	link = bpf_program__attach(skel->progs.check_bloom);
+	if (!ASSERT_OK_PTR(link, "link"))
+		return;
+
+	syscall(SYS_getpgid);
+
+	ASSERT_EQ(skel->bss->error, 0, "error");
+
+	bpf_link__destroy(link);
+}
+
+static void test_inner_map(struct bloom_filter_map *skel, const __u32 *rand_vals,
+			   __u32 nr_rand_vals)
+{
+	int outer_map_fd, inner_map_fd, err, i, key = 0;
+	struct bpf_create_map_attr xattr = {
+		.name = "bloom_filter_inner_map",
+		.map_type = BPF_MAP_TYPE_BLOOM_FILTER,
+		.value_size = sizeof(__u32),
+		.max_entries = nr_rand_vals,
+	};
+	struct bpf_link *link;
+
+	/* Create a bloom filter map that will be used as the inner map */
+	inner_map_fd = bpf_create_map_xattr(&xattr);
+	if (!ASSERT_GE(inner_map_fd, 0, "bpf_create_map bloom filter inner map"))
+		return;
+
+	for (i = 0; i < nr_rand_vals; i++) {
+		err = bpf_map_update_elem(inner_map_fd, NULL, rand_vals + i, BPF_ANY);
+		if (!ASSERT_OK(err, "Add random value to inner_map_fd"))
+			goto done;
+	}
+
+	/* Add the bloom filter map to the outer map */
+	outer_map_fd = bpf_map__fd(skel->maps.outer_map);
+	err = bpf_map_update_elem(outer_map_fd, &key, &inner_map_fd, BPF_ANY);
+	if (!ASSERT_OK(err, "Add bloom filter map to outer map"))
+		goto done;
+
+	/* Attach the bloom_filter_inner_map prog */
+	link = bpf_program__attach(skel->progs.inner_map);
+	if (!ASSERT_OK_PTR(link, "link"))
+		goto delete_inner_map;
+
+	syscall(SYS_getpgid);
+
+	ASSERT_EQ(skel->bss->error, 0, "error");
+
+	bpf_link__destroy(link);
+
+delete_inner_map:
+	/* Ensure the inner bloom filter map can be deleted */
+	err = bpf_map_delete_elem(outer_map_fd, &key);
+	ASSERT_OK(err, "Delete inner bloom filter map");
+
+done:
+	close(inner_map_fd);
+}
+
+static int setup_progs(struct bloom_filter_map **out_skel, __u32 **out_rand_vals,
+		       __u32 *out_nr_rand_vals)
+{
+	struct bloom_filter_map *skel;
+	int random_data_fd, bloom_fd;
+	__u32 *rand_vals = NULL;
+	__u32 map_size, val;
+	int err, i;
+
+	/* Set up a bloom filter map skeleton */
+	skel = bloom_filter_map__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "bloom_filter_map__open_and_load"))
+		return -EINVAL;
+
+	/* Set up rand_vals */
+	map_size = bpf_map__max_entries(skel->maps.map_random_data);
+	rand_vals = malloc(sizeof(*rand_vals) * map_size);
+	if (!rand_vals) {
+		err = -ENOMEM;
+		goto error;
+	}
+
+	/* Generate random values and populate both skeletons */
+	random_data_fd = bpf_map__fd(skel->maps.map_random_data);
+	bloom_fd = bpf_map__fd(skel->maps.map_bloom);
+	for (i = 0; i < map_size; i++) {
+		val = rand();
+
+		err = bpf_map_update_elem(random_data_fd, &i, &val, BPF_ANY);
+		if (!ASSERT_OK(err, "Add random value to map_random_data"))
+			goto error;
+
+		err = bpf_map_update_elem(bloom_fd, NULL, &val, BPF_ANY);
+		if (!ASSERT_OK(err, "Add random value to map_bloom"))
+			goto error;
+
+		rand_vals[i] = val;
+	}
+
+	*out_skel = skel;
+	*out_rand_vals = rand_vals;
+	*out_nr_rand_vals = map_size;
+
+	return 0;
+
+error:
+	bloom_filter_map__destroy(skel);
+	if (rand_vals)
+		free(rand_vals);
+	return err;
+}
+
+void test_bloom_filter_map(void)
+{
+	__u32 *rand_vals, nr_rand_vals;
+	struct bloom_filter_map *skel;
+	int err;
+
+	test_fail_cases();
+
+	err = setup_progs(&skel, &rand_vals, &nr_rand_vals);
+	if (err)
+		return;
+
+	test_inner_map(skel, rand_vals, nr_rand_vals);
+	free(rand_vals);
+
+	check_bloom(skel);
+
+	bloom_filter_map__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/progs/bloom_filter_map.c b/tools/testing/selftests/bpf/progs/bloom_filter_map.c
new file mode 100644
index 000000000000..1316f3db79d9
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/bloom_filter_map.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+
+char _license[] SEC("license") = "GPL";
+
+struct bpf_map;
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__type(key, __u32);
+	__type(value, __u32);
+	__uint(max_entries, 1000);
+} map_random_data SEC(".maps");
+
+struct map_bloom_type {
+	__uint(type, BPF_MAP_TYPE_BLOOM_FILTER);
+	__type(value, __u32);
+	__uint(max_entries, 10000);
+	__uint(map_extra, 5);
+} map_bloom SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
+	__type(key, int);
+	__type(value, int);
+	__uint(max_entries, 1);
+	__array(values, struct map_bloom_type);
+} outer_map SEC(".maps");
+
+struct callback_ctx {
+	struct bpf_map *map;
+};
+
+int error = 0;
+
+static __u64
+check_elem(struct bpf_map *map, __u32 *key, __u32 *val,
+	   struct callback_ctx *data)
+{
+	int err;
+
+	err = bpf_map_peek_elem(data->map, val);
+	if (err) {
+		error |= 1;
+		return 1; /* stop the iteration */
+	}
+
+	return 0;
+}
+
+SEC("fentry/__x64_sys_getpgid")
+int inner_map(void *ctx)
+{
+	struct bpf_map *inner_map;
+	struct callback_ctx data;
+	int key = 0;
+
+	inner_map = bpf_map_lookup_elem(&outer_map, &key);
+	if (!inner_map) {
+		error |= 2;
+		return 0;
+	}
+
+	data.map = inner_map;
+	bpf_for_each_map_elem(&map_random_data, check_elem, &data, 0);
+
+	return 0;
+}
+
+SEC("fentry/__x64_sys_getpgid")
+int check_bloom(void *ctx)
+{
+	struct callback_ctx data;
+
+	data.map = (struct bpf_map *)&map_bloom;
+	bpf_for_each_map_elem(&map_random_data, check_elem, &data, 0);
+
+	return 0;
+}
-- 
cgit v1.2.3


From 57fd1c63c9a687c5fdc86fa628c490d6733e8d0b Mon Sep 17 00:00:00 2001
From: Joanne Koong <joannekoong@fb.com>
Date: Wed, 27 Oct 2021 16:45:03 -0700
Subject: bpf/benchs: Add benchmark tests for bloom filter throughput + false
 positive

This patch adds benchmark tests for the throughput (for lookups + updates)
and the false positive rate of bloom filter lookups, as well as some
minor refactoring of the bash script for running the benchmarks.

These benchmarks show that as the number of hash functions increases,
the throughput and the false positive rate of the bloom filter decreases.
>From the benchmark data, the approximate average false-positive rates
are roughly as follows:

1 hash function = ~30%
2 hash functions = ~15%
3 hash functions = ~5%
4 hash functions = ~2.5%
5 hash functions = ~1%
6 hash functions = ~0.5%
7 hash functions  = ~0.35%
8 hash functions = ~0.15%
9 hash functions = ~0.1%
10 hash functions = ~0%

For reference data, the benchmarks run on one thread on a machine
with one numa node for 1 to 5 hash functions for 8-byte and 64-byte
values are as follows:

1 hash function:
  50k entries
	8-byte value
	    Lookups - 51.1 M/s operations
	    Updates - 33.6 M/s operations
	    False positive rate: 24.15%
	64-byte value
	    Lookups - 15.7 M/s operations
	    Updates - 15.1 M/s operations
	    False positive rate: 24.2%
  100k entries
	8-byte value
	    Lookups - 51.0 M/s operations
	    Updates - 33.4 M/s operations
	    False positive rate: 24.04%
	64-byte value
	    Lookups - 15.6 M/s operations
	    Updates - 14.6 M/s operations
	    False positive rate: 24.06%
  500k entries
	8-byte value
	    Lookups - 50.5 M/s operations
	    Updates - 33.1 M/s operations
	    False positive rate: 27.45%
	64-byte value
	    Lookups - 15.6 M/s operations
	    Updates - 14.2 M/s operations
	    False positive rate: 27.42%
  1 mil entries
	8-byte value
	    Lookups - 49.7 M/s operations
	    Updates - 32.9 M/s operations
	    False positive rate: 27.45%
	64-byte value
	    Lookups - 15.4 M/s operations
	    Updates - 13.7 M/s operations
	    False positive rate: 27.58%
  2.5 mil entries
	8-byte value
	    Lookups - 47.2 M/s operations
	    Updates - 31.8 M/s operations
	    False positive rate: 30.94%
	64-byte value
	    Lookups - 15.3 M/s operations
	    Updates - 13.2 M/s operations
	    False positive rate: 30.95%
  5 mil entries
	8-byte value
	    Lookups - 41.1 M/s operations
	    Updates - 28.1 M/s operations
	    False positive rate: 31.01%
	64-byte value
	    Lookups - 13.3 M/s operations
	    Updates - 11.4 M/s operations
	    False positive rate: 30.98%

2 hash functions:
  50k entries
	8-byte value
	    Lookups - 34.1 M/s operations
	    Updates - 20.1 M/s operations
	    False positive rate: 9.13%
	64-byte value
	    Lookups - 8.4 M/s operations
	    Updates - 7.9 M/s operations
	    False positive rate: 9.21%
  100k entries
	8-byte value
	    Lookups - 33.7 M/s operations
	    Updates - 18.9 M/s operations
	    False positive rate: 9.13%
	64-byte value
	    Lookups - 8.4 M/s operations
	    Updates - 7.7 M/s operations
	    False positive rate: 9.19%
  500k entries
	8-byte value
	    Lookups - 32.7 M/s operations
	    Updates - 18.1 M/s operations
	    False positive rate: 12.61%
	64-byte value
	    Lookups - 8.4 M/s operations
	    Updates - 7.5 M/s operations
	    False positive rate: 12.61%
  1 mil entries
	8-byte value
	    Lookups - 30.6 M/s operations
	    Updates - 18.9 M/s operations
	    False positive rate: 12.54%
	64-byte value
	    Lookups - 8.0 M/s operations
	    Updates - 7.0 M/s operations
	    False positive rate: 12.52%
  2.5 mil entries
	8-byte value
	    Lookups - 25.3 M/s operations
	    Updates - 16.7 M/s operations
	    False positive rate: 16.77%
	64-byte value
	    Lookups - 7.9 M/s operations
	    Updates - 6.5 M/s operations
	    False positive rate: 16.88%
  5 mil entries
	8-byte value
	    Lookups - 20.8 M/s operations
	    Updates - 14.7 M/s operations
	    False positive rate: 16.78%
	64-byte value
	    Lookups - 7.0 M/s operations
	    Updates - 6.0 M/s operations
	    False positive rate: 16.78%

3 hash functions:
  50k entries
	8-byte value
	    Lookups - 25.1 M/s operations
	    Updates - 14.6 M/s operations
	    False positive rate: 7.65%
	64-byte value
	    Lookups - 5.8 M/s operations
	    Updates - 5.5 M/s operations
	    False positive rate: 7.58%
  100k entries
	8-byte value
	    Lookups - 24.7 M/s operations
	    Updates - 14.1 M/s operations
	    False positive rate: 7.71%
	64-byte value
	    Lookups - 5.8 M/s operations
	    Updates - 5.3 M/s operations
	    False positive rate: 7.62%
  500k entries
	8-byte value
	    Lookups - 22.9 M/s operations
	    Updates - 13.9 M/s operations
	    False positive rate: 2.62%
	64-byte value
	    Lookups - 5.6 M/s operations
	    Updates - 4.8 M/s operations
	    False positive rate: 2.7%
  1 mil entries
	8-byte value
	    Lookups - 19.8 M/s operations
	    Updates - 12.6 M/s operations
	    False positive rate: 2.60%
	64-byte value
	    Lookups - 5.3 M/s operations
	    Updates - 4.4 M/s operations
	    False positive rate: 2.69%
  2.5 mil entries
	8-byte value
	    Lookups - 16.2 M/s operations
	    Updates - 10.7 M/s operations
	    False positive rate: 4.49%
	64-byte value
	    Lookups - 4.9 M/s operations
	    Updates - 4.1 M/s operations
	    False positive rate: 4.41%
  5 mil entries
	8-byte value
	    Lookups - 18.8 M/s operations
	    Updates - 9.2 M/s operations
	    False positive rate: 4.45%
	64-byte value
	    Lookups - 5.2 M/s operations
	    Updates - 3.9 M/s operations
	    False positive rate: 4.54%

4 hash functions:
  50k entries
	8-byte value
	    Lookups - 19.7 M/s operations
	    Updates - 11.1 M/s operations
	    False positive rate: 1.01%
	64-byte value
	    Lookups - 4.4 M/s operations
	    Updates - 4.0 M/s operations
	    False positive rate: 1.00%
  100k entries
	8-byte value
	    Lookups - 19.5 M/s operations
	    Updates - 10.9 M/s operations
	    False positive rate: 1.00%
	64-byte value
	    Lookups - 4.3 M/s operations
	    Updates - 3.9 M/s operations
	    False positive rate: 0.97%
  500k entries
	8-byte value
	    Lookups - 18.2 M/s operations
	    Updates - 10.6 M/s operations
	    False positive rate: 2.05%
	64-byte value
	    Lookups - 4.3 M/s operations
	    Updates - 3.7 M/s operations
	    False positive rate: 2.05%
  1 mil entries
	8-byte value
	    Lookups - 15.5 M/s operations
	    Updates - 9.6 M/s operations
	    False positive rate: 1.99%
	64-byte value
	    Lookups - 4.0 M/s operations
	    Updates - 3.4 M/s operations
	    False positive rate: 1.99%
  2.5 mil entries
	8-byte value
	    Lookups - 13.8 M/s operations
	    Updates - 7.7 M/s operations
	    False positive rate: 3.91%
	64-byte value
	    Lookups - 3.7 M/s operations
	    Updates - 3.6 M/s operations
	    False positive rate: 3.78%
  5 mil entries
	8-byte value
	    Lookups - 13.0 M/s operations
	    Updates - 6.9 M/s operations
	    False positive rate: 3.93%
	64-byte value
	    Lookups - 3.5 M/s operations
	    Updates - 3.7 M/s operations
	    False positive rate: 3.39%

5 hash functions:
  50k entries
	8-byte value
	    Lookups - 16.4 M/s operations
	    Updates - 9.1 M/s operations
	    False positive rate: 0.78%
	64-byte value
	    Lookups - 3.5 M/s operations
	    Updates - 3.2 M/s operations
	    False positive rate: 0.77%
  100k entries
	8-byte value
	    Lookups - 16.3 M/s operations
	    Updates - 9.0 M/s operations
	    False positive rate: 0.79%
	64-byte value
	    Lookups - 3.5 M/s operations
	    Updates - 3.2 M/s operations
	    False positive rate: 0.78%
  500k entries
	8-byte value
	    Lookups - 15.1 M/s operations
	    Updates - 8.8 M/s operations
	    False positive rate: 1.82%
	64-byte value
	    Lookups - 3.4 M/s operations
	    Updates - 3.0 M/s operations
	    False positive rate: 1.78%
  1 mil entries
	8-byte value
	    Lookups - 13.2 M/s operations
	    Updates - 7.8 M/s operations
	    False positive rate: 1.81%
	64-byte value
	    Lookups - 3.2 M/s operations
	    Updates - 2.8 M/s operations
	    False positive rate: 1.80%
  2.5 mil entries
	8-byte value
	    Lookups - 10.5 M/s operations
	    Updates - 5.9 M/s operations
	    False positive rate: 0.29%
	64-byte value
	    Lookups - 3.2 M/s operations
	    Updates - 2.4 M/s operations
	    False positive rate: 0.28%
  5 mil entries
	8-byte value
	    Lookups - 9.6 M/s operations
	    Updates - 5.7 M/s operations
	    False positive rate: 0.30%
	64-byte value
	    Lookups - 3.2 M/s operations
	    Updates - 2.7 M/s operations
	    False positive rate: 0.30%

Signed-off-by: Joanne Koong <joannekoong@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211027234504.30744-5-joannekoong@fb.com
---
 tools/testing/selftests/bpf/Makefile               |   6 +-
 tools/testing/selftests/bpf/bench.c                |  37 ++
 tools/testing/selftests/bpf/bench.h                |   3 +
 .../selftests/bpf/benchs/bench_bloom_filter_map.c  | 420 +++++++++++++++++++++
 .../bpf/benchs/run_bench_bloom_filter_map.sh       |  28 ++
 .../selftests/bpf/benchs/run_bench_ringbufs.sh     |  30 +-
 tools/testing/selftests/bpf/benchs/run_common.sh   |  48 +++
 .../selftests/bpf/progs/bloom_filter_bench.c       | 153 ++++++++
 8 files changed, 695 insertions(+), 30 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/benchs/bench_bloom_filter_map.c
 create mode 100755 tools/testing/selftests/bpf/benchs/run_bench_bloom_filter_map.sh
 create mode 100644 tools/testing/selftests/bpf/benchs/run_common.sh
 create mode 100644 tools/testing/selftests/bpf/progs/bloom_filter_bench.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index ac47cf9760fc..2c464cb78d6b 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -524,18 +524,20 @@ $(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
 # Benchmark runner
 $(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
 	$(call msg,CC,,$@)
-	$(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
+	$(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
 $(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
 $(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
 $(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
 			    $(OUTPUT)/perfbuf_bench.skel.h
+$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
 $(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
 $(OUTPUT)/bench: LDLIBS += -lm
 $(OUTPUT)/bench: $(OUTPUT)/bench.o $(OUTPUT)/testing_helpers.o \
 		 $(OUTPUT)/bench_count.o \
 		 $(OUTPUT)/bench_rename.o \
 		 $(OUTPUT)/bench_trigger.o \
-		 $(OUTPUT)/bench_ringbufs.o
+		 $(OUTPUT)/bench_ringbufs.o \
+		 $(OUTPUT)/bench_bloom_filter_map.o
 	$(call msg,BINARY,,$@)
 	$(Q)$(CC) $(LDFLAGS) -o $@ $(filter %.a %.o,$^) $(LDLIBS)
 
diff --git a/tools/testing/selftests/bpf/bench.c b/tools/testing/selftests/bpf/bench.c
index 6ea15b93a2f8..a1d5dffe5ef6 100644
--- a/tools/testing/selftests/bpf/bench.c
+++ b/tools/testing/selftests/bpf/bench.c
@@ -51,6 +51,35 @@ void setup_libbpf()
 		fprintf(stderr, "failed to increase RLIMIT_MEMLOCK: %d", err);
 }
 
+void false_hits_report_progress(int iter, struct bench_res *res, long delta_ns)
+{
+	long total = res->false_hits  + res->hits + res->drops;
+
+	printf("Iter %3d (%7.3lfus): ",
+	       iter, (delta_ns - 1000000000) / 1000.0);
+
+	printf("%ld false hits of %ld total operations. Percentage = %2.2f %%\n",
+	       res->false_hits, total, ((float)res->false_hits / total) * 100);
+}
+
+void false_hits_report_final(struct bench_res res[], int res_cnt)
+{
+	long total_hits = 0, total_drops = 0, total_false_hits = 0, total_ops = 0;
+	int i;
+
+	for (i = 0; i < res_cnt; i++) {
+		total_hits += res[i].hits;
+		total_false_hits += res[i].false_hits;
+		total_drops += res[i].drops;
+	}
+	total_ops = total_hits + total_false_hits + total_drops;
+
+	printf("Summary: %ld false hits of %ld total operations. ",
+	       total_false_hits, total_ops);
+	printf("Percentage =  %2.2f %%\n",
+	       ((float)total_false_hits / total_ops) * 100);
+}
+
 void hits_drops_report_progress(int iter, struct bench_res *res, long delta_ns)
 {
 	double hits_per_sec, drops_per_sec;
@@ -132,9 +161,11 @@ static const struct argp_option opts[] = {
 };
 
 extern struct argp bench_ringbufs_argp;
+extern struct argp bench_bloom_map_argp;
 
 static const struct argp_child bench_parsers[] = {
 	{ &bench_ringbufs_argp, 0, "Ring buffers benchmark", 0 },
+	{ &bench_bloom_map_argp, 0, "Bloom filter map benchmark", 0 },
 	{},
 };
 
@@ -323,6 +354,9 @@ extern const struct bench bench_rb_libbpf;
 extern const struct bench bench_rb_custom;
 extern const struct bench bench_pb_libbpf;
 extern const struct bench bench_pb_custom;
+extern const struct bench bench_bloom_lookup;
+extern const struct bench bench_bloom_update;
+extern const struct bench bench_bloom_false_positive;
 
 static const struct bench *benchs[] = {
 	&bench_count_global,
@@ -344,6 +378,9 @@ static const struct bench *benchs[] = {
 	&bench_rb_custom,
 	&bench_pb_libbpf,
 	&bench_pb_custom,
+	&bench_bloom_lookup,
+	&bench_bloom_update,
+	&bench_bloom_false_positive,
 };
 
 static void setup_benchmark()
diff --git a/tools/testing/selftests/bpf/bench.h b/tools/testing/selftests/bpf/bench.h
index c1f48a473b02..624c6b11501f 100644
--- a/tools/testing/selftests/bpf/bench.h
+++ b/tools/testing/selftests/bpf/bench.h
@@ -33,6 +33,7 @@ struct env {
 struct bench_res {
 	long hits;
 	long drops;
+	long false_hits;
 };
 
 struct bench {
@@ -56,6 +57,8 @@ extern const struct bench *bench;
 void setup_libbpf();
 void hits_drops_report_progress(int iter, struct bench_res *res, long delta_ns);
 void hits_drops_report_final(struct bench_res res[], int res_cnt);
+void false_hits_report_progress(int iter, struct bench_res *res, long delta_ns);
+void false_hits_report_final(struct bench_res res[], int res_cnt);
 
 static inline __u64 get_time_ns() {
 	struct timespec t;
diff --git a/tools/testing/selftests/bpf/benchs/bench_bloom_filter_map.c b/tools/testing/selftests/bpf/benchs/bench_bloom_filter_map.c
new file mode 100644
index 000000000000..4bafad418a8a
--- /dev/null
+++ b/tools/testing/selftests/bpf/benchs/bench_bloom_filter_map.c
@@ -0,0 +1,420 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include <argp.h>
+#include <linux/log2.h>
+#include <pthread.h>
+#include "bench.h"
+#include "bloom_filter_bench.skel.h"
+#include "bpf_util.h"
+
+static struct ctx {
+	bool use_array_map;
+	bool use_hashmap;
+	bool hashmap_use_bloom;
+	bool count_false_hits;
+
+	struct bloom_filter_bench *skel;
+
+	int bloom_fd;
+	int hashmap_fd;
+	int array_map_fd;
+
+	pthread_mutex_t map_done_mtx;
+	pthread_cond_t map_done_cv;
+	bool map_done;
+	bool map_prepare_err;
+
+	__u32 next_map_idx;
+} ctx = {
+	.map_done_mtx = PTHREAD_MUTEX_INITIALIZER,
+	.map_done_cv = PTHREAD_COND_INITIALIZER,
+};
+
+struct stat {
+	__u32 stats[3];
+};
+
+static struct {
+	__u32 nr_entries;
+	__u8 nr_hash_funcs;
+	__u8 value_size;
+} args = {
+	.nr_entries = 1000,
+	.nr_hash_funcs = 3,
+	.value_size = 8,
+};
+
+enum {
+	ARG_NR_ENTRIES = 3000,
+	ARG_NR_HASH_FUNCS = 3001,
+	ARG_VALUE_SIZE = 3002,
+};
+
+static const struct argp_option opts[] = {
+	{ "nr_entries", ARG_NR_ENTRIES, "NR_ENTRIES", 0,
+		"Set number of expected unique entries in the bloom filter"},
+	{ "nr_hash_funcs", ARG_NR_HASH_FUNCS, "NR_HASH_FUNCS", 0,
+		"Set number of hash functions in the bloom filter"},
+	{ "value_size", ARG_VALUE_SIZE, "VALUE_SIZE", 0,
+		"Set value size (in bytes) of bloom filter entries"},
+	{},
+};
+
+static error_t parse_arg(int key, char *arg, struct argp_state *state)
+{
+	switch (key) {
+	case ARG_NR_ENTRIES:
+		args.nr_entries = strtol(arg, NULL, 10);
+		if (args.nr_entries == 0) {
+			fprintf(stderr, "Invalid nr_entries count.");
+			argp_usage(state);
+		}
+		break;
+	case ARG_NR_HASH_FUNCS:
+		args.nr_hash_funcs = strtol(arg, NULL, 10);
+		if (args.nr_hash_funcs == 0 || args.nr_hash_funcs > 15) {
+			fprintf(stderr,
+				"The bloom filter must use 1 to 15 hash functions.");
+			argp_usage(state);
+		}
+		break;
+	case ARG_VALUE_SIZE:
+		args.value_size = strtol(arg, NULL, 10);
+		if (args.value_size < 2 || args.value_size > 256) {
+			fprintf(stderr,
+				"Invalid value size. Must be between 2 and 256 bytes");
+			argp_usage(state);
+		}
+		break;
+	default:
+		return ARGP_ERR_UNKNOWN;
+	}
+
+	return 0;
+}
+
+/* exported into benchmark runner */
+const struct argp bench_bloom_map_argp = {
+	.options = opts,
+	.parser = parse_arg,
+};
+
+static void validate(void)
+{
+	if (env.consumer_cnt != 1) {
+		fprintf(stderr,
+			"The bloom filter benchmarks do not support multi-consumer use\n");
+		exit(1);
+	}
+}
+
+static inline void trigger_bpf_program(void)
+{
+	syscall(__NR_getpgid);
+}
+
+static void *producer(void *input)
+{
+	while (true)
+		trigger_bpf_program();
+
+	return NULL;
+}
+
+static void *map_prepare_thread(void *arg)
+{
+	__u32 val_size, i;
+	void *val = NULL;
+	int err;
+
+	val_size = args.value_size;
+	val = malloc(val_size);
+	if (!val) {
+		ctx.map_prepare_err = true;
+		goto done;
+	}
+
+	while (true) {
+		i = __atomic_add_fetch(&ctx.next_map_idx, 1, __ATOMIC_RELAXED);
+		if (i > args.nr_entries)
+			break;
+
+again:
+		/* Populate hashmap, bloom filter map, and array map with the same
+		 * random values
+		 */
+		err = syscall(__NR_getrandom, val, val_size, 0);
+		if (err != val_size) {
+			ctx.map_prepare_err = true;
+			fprintf(stderr, "failed to get random value: %d\n", -errno);
+			break;
+		}
+
+		if (ctx.use_hashmap) {
+			err = bpf_map_update_elem(ctx.hashmap_fd, val, val, BPF_NOEXIST);
+			if (err) {
+				if (err != -EEXIST) {
+					ctx.map_prepare_err = true;
+					fprintf(stderr, "failed to add elem to hashmap: %d\n",
+						-errno);
+					break;
+				}
+				goto again;
+			}
+		}
+
+		i--;
+
+		if (ctx.use_array_map) {
+			err = bpf_map_update_elem(ctx.array_map_fd, &i, val, 0);
+			if (err) {
+				ctx.map_prepare_err = true;
+				fprintf(stderr, "failed to add elem to array map: %d\n", -errno);
+				break;
+			}
+		}
+
+		if (ctx.use_hashmap && !ctx.hashmap_use_bloom)
+			continue;
+
+		err = bpf_map_update_elem(ctx.bloom_fd, NULL, val, 0);
+		if (err) {
+			ctx.map_prepare_err = true;
+			fprintf(stderr,
+				"failed to add elem to bloom filter map: %d\n", -errno);
+			break;
+		}
+	}
+done:
+	pthread_mutex_lock(&ctx.map_done_mtx);
+	ctx.map_done = true;
+	pthread_cond_signal(&ctx.map_done_cv);
+	pthread_mutex_unlock(&ctx.map_done_mtx);
+
+	if (val)
+		free(val);
+
+	return NULL;
+}
+
+static void populate_maps(void)
+{
+	unsigned int nr_cpus = bpf_num_possible_cpus();
+	pthread_t map_thread;
+	int i, err, nr_rand_bytes;
+
+	ctx.bloom_fd = bpf_map__fd(ctx.skel->maps.bloom_map);
+	ctx.hashmap_fd = bpf_map__fd(ctx.skel->maps.hashmap);
+	ctx.array_map_fd = bpf_map__fd(ctx.skel->maps.array_map);
+
+	for (i = 0; i < nr_cpus; i++) {
+		err = pthread_create(&map_thread, NULL, map_prepare_thread,
+				     NULL);
+		if (err) {
+			fprintf(stderr, "failed to create pthread: %d\n", -errno);
+			exit(1);
+		}
+	}
+
+	pthread_mutex_lock(&ctx.map_done_mtx);
+	while (!ctx.map_done)
+		pthread_cond_wait(&ctx.map_done_cv, &ctx.map_done_mtx);
+	pthread_mutex_unlock(&ctx.map_done_mtx);
+
+	if (ctx.map_prepare_err)
+		exit(1);
+
+	nr_rand_bytes = syscall(__NR_getrandom, ctx.skel->bss->rand_vals,
+				ctx.skel->rodata->nr_rand_bytes, 0);
+	if (nr_rand_bytes != ctx.skel->rodata->nr_rand_bytes) {
+		fprintf(stderr, "failed to get random bytes\n");
+		exit(1);
+	}
+}
+
+static void check_args(void)
+{
+	if (args.value_size < 8)  {
+		__u64 nr_unique_entries = 1ULL << (args.value_size * 8);
+
+		if (args.nr_entries > nr_unique_entries) {
+			fprintf(stderr,
+				"Not enough unique values for the nr_entries requested\n");
+			exit(1);
+		}
+	}
+}
+
+static struct bloom_filter_bench *setup_skeleton(void)
+{
+	struct bloom_filter_bench *skel;
+
+	check_args();
+
+	setup_libbpf();
+
+	skel = bloom_filter_bench__open();
+	if (!skel) {
+		fprintf(stderr, "failed to open skeleton\n");
+		exit(1);
+	}
+
+	skel->rodata->hashmap_use_bloom = ctx.hashmap_use_bloom;
+	skel->rodata->count_false_hits = ctx.count_false_hits;
+
+	/* Resize number of entries */
+	bpf_map__set_max_entries(skel->maps.hashmap, args.nr_entries);
+
+	bpf_map__set_max_entries(skel->maps.array_map, args.nr_entries);
+
+	bpf_map__set_max_entries(skel->maps.bloom_map, args.nr_entries);
+
+	/* Set value size */
+	bpf_map__set_value_size(skel->maps.array_map, args.value_size);
+
+	bpf_map__set_value_size(skel->maps.bloom_map, args.value_size);
+
+	bpf_map__set_value_size(skel->maps.hashmap, args.value_size);
+
+	/* For the hashmap, we use the value as the key as well */
+	bpf_map__set_key_size(skel->maps.hashmap, args.value_size);
+
+	skel->bss->value_size = args.value_size;
+
+	/* Set number of hash functions */
+	bpf_map__set_map_extra(skel->maps.bloom_map, args.nr_hash_funcs);
+
+	if (bloom_filter_bench__load(skel)) {
+		fprintf(stderr, "failed to load skeleton\n");
+		exit(1);
+	}
+
+	return skel;
+}
+
+static void bloom_lookup_setup(void)
+{
+	struct bpf_link *link;
+
+	ctx.use_array_map = true;
+
+	ctx.skel = setup_skeleton();
+
+	populate_maps();
+
+	link = bpf_program__attach(ctx.skel->progs.bloom_lookup);
+	if (!link) {
+		fprintf(stderr, "failed to attach program!\n");
+		exit(1);
+	}
+}
+
+static void bloom_update_setup(void)
+{
+	struct bpf_link *link;
+
+	ctx.use_array_map = true;
+
+	ctx.skel = setup_skeleton();
+
+	populate_maps();
+
+	link = bpf_program__attach(ctx.skel->progs.bloom_update);
+	if (!link) {
+		fprintf(stderr, "failed to attach program!\n");
+		exit(1);
+	}
+}
+
+static void false_positive_setup(void)
+{
+	struct bpf_link *link;
+
+	ctx.use_hashmap = true;
+	ctx.hashmap_use_bloom = true;
+	ctx.count_false_hits = true;
+
+	ctx.skel = setup_skeleton();
+
+	populate_maps();
+
+	link = bpf_program__attach(ctx.skel->progs.bloom_hashmap_lookup);
+	if (!link) {
+		fprintf(stderr, "failed to attach program!\n");
+		exit(1);
+	}
+}
+
+static void measure(struct bench_res *res)
+{
+	unsigned long total_hits = 0, total_drops = 0, total_false_hits = 0;
+	static unsigned long last_hits, last_drops, last_false_hits;
+	unsigned int nr_cpus = bpf_num_possible_cpus();
+	int hit_key, drop_key, false_hit_key;
+	int i;
+
+	hit_key = ctx.skel->rodata->hit_key;
+	drop_key = ctx.skel->rodata->drop_key;
+	false_hit_key = ctx.skel->rodata->false_hit_key;
+
+	if (ctx.skel->bss->error != 0) {
+		fprintf(stderr, "error (%d) when searching the bloom filter\n",
+			ctx.skel->bss->error);
+		exit(1);
+	}
+
+	for (i = 0; i < nr_cpus; i++) {
+		struct stat *s = (void *)&ctx.skel->bss->percpu_stats[i];
+
+		total_hits += s->stats[hit_key];
+		total_drops += s->stats[drop_key];
+		total_false_hits += s->stats[false_hit_key];
+	}
+
+	res->hits = total_hits - last_hits;
+	res->drops = total_drops - last_drops;
+	res->false_hits = total_false_hits - last_false_hits;
+
+	last_hits = total_hits;
+	last_drops = total_drops;
+	last_false_hits = total_false_hits;
+}
+
+static void *consumer(void *input)
+{
+	return NULL;
+}
+
+const struct bench bench_bloom_lookup = {
+	.name = "bloom-lookup",
+	.validate = validate,
+	.setup = bloom_lookup_setup,
+	.producer_thread = producer,
+	.consumer_thread = consumer,
+	.measure = measure,
+	.report_progress = hits_drops_report_progress,
+	.report_final = hits_drops_report_final,
+};
+
+const struct bench bench_bloom_update = {
+	.name = "bloom-update",
+	.validate = validate,
+	.setup = bloom_update_setup,
+	.producer_thread = producer,
+	.consumer_thread = consumer,
+	.measure = measure,
+	.report_progress = hits_drops_report_progress,
+	.report_final = hits_drops_report_final,
+};
+
+const struct bench bench_bloom_false_positive = {
+	.name = "bloom-false-positive",
+	.validate = validate,
+	.setup = false_positive_setup,
+	.producer_thread = producer,
+	.consumer_thread = consumer,
+	.measure = measure,
+	.report_progress = false_hits_report_progress,
+	.report_final = false_hits_report_final,
+};
diff --git a/tools/testing/selftests/bpf/benchs/run_bench_bloom_filter_map.sh b/tools/testing/selftests/bpf/benchs/run_bench_bloom_filter_map.sh
new file mode 100755
index 000000000000..d03d0e5c91cd
--- /dev/null
+++ b/tools/testing/selftests/bpf/benchs/run_bench_bloom_filter_map.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+source ./benchs/run_common.sh
+
+set -eufo pipefail
+
+header "Bloom filter map"
+for v in 2 4 8 16 40; do
+for t in 1 4 8 12 16; do
+for h in {1..10}; do
+subtitle "value_size: $v bytes, # threads: $t, # hashes: $h"
+	for e in 10000 50000 75000 100000 250000 500000 750000 1000000 2500000 5000000; do
+		printf "%'d entries -\n" $e
+		printf "\t"
+		summarize "Lookups, total operations: " \
+			"$($RUN_BENCH -p $t --nr_hash_funcs $h --nr_entries $e --value_size $v bloom-lookup)"
+		printf "\t"
+		summarize "Updates, total operations: " \
+			"$($RUN_BENCH -p $t --nr_hash_funcs $h --nr_entries $e --value_size $v bloom-update)"
+		printf "\t"
+		summarize_percentage "False positive rate: " \
+			"$($RUN_BENCH -p $t --nr_hash_funcs $h --nr_entries $e --value_size $v bloom-false-positive)"
+	done
+	printf "\n"
+done
+done
+done
diff --git a/tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh b/tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh
index af4aa04caba6..ada028aa9007 100755
--- a/tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh
+++ b/tools/testing/selftests/bpf/benchs/run_bench_ringbufs.sh
@@ -1,34 +1,8 @@
 #!/bin/bash
 
-set -eufo pipefail
-
-RUN_BENCH="sudo ./bench -w3 -d10 -a"
-
-function hits()
-{
-	echo "$*" | sed -E "s/.*hits\s+([0-9]+\.[0-9]+ ± [0-9]+\.[0-9]+M\/s).*/\1/"
-}
-
-function drops()
-{
-	echo "$*" | sed -E "s/.*drops\s+([0-9]+\.[0-9]+ ± [0-9]+\.[0-9]+M\/s).*/\1/"
-}
+source ./benchs/run_common.sh
 
-function header()
-{
-	local len=${#1}
-
-	printf "\n%s\n" "$1"
-	for i in $(seq 1 $len); do printf '='; done
-	printf '\n'
-}
-
-function summarize()
-{
-	bench="$1"
-	summary=$(echo $2 | tail -n1)
-	printf "%-20s %s (drops %s)\n" "$bench" "$(hits $summary)" "$(drops $summary)"
-}
+set -eufo pipefail
 
 header "Single-producer, parallel producer"
 for b in rb-libbpf rb-custom pb-libbpf pb-custom; do
diff --git a/tools/testing/selftests/bpf/benchs/run_common.sh b/tools/testing/selftests/bpf/benchs/run_common.sh
new file mode 100644
index 000000000000..670f23b037c4
--- /dev/null
+++ b/tools/testing/selftests/bpf/benchs/run_common.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+RUN_BENCH="sudo ./bench -w3 -d10 -a"
+
+function header()
+{
+	local len=${#1}
+
+	printf "\n%s\n" "$1"
+	for i in $(seq 1 $len); do printf '='; done
+	printf '\n'
+}
+
+function subtitle()
+{
+	local len=${#1}
+	printf "\t%s\n" "$1"
+}
+
+function hits()
+{
+	echo "$*" | sed -E "s/.*hits\s+([0-9]+\.[0-9]+ ± [0-9]+\.[0-9]+M\/s).*/\1/"
+}
+
+function drops()
+{
+	echo "$*" | sed -E "s/.*drops\s+([0-9]+\.[0-9]+ ± [0-9]+\.[0-9]+M\/s).*/\1/"
+}
+
+function percentage()
+{
+	echo "$*" | sed -E "s/.*Percentage\s=\s+([0-9]+\.[0-9]+).*/\1/"
+}
+
+function summarize()
+{
+	bench="$1"
+	summary=$(echo $2 | tail -n1)
+	printf "%-20s %s (drops %s)\n" "$bench" "$(hits $summary)" "$(drops $summary)"
+}
+
+function summarize_percentage()
+{
+	bench="$1"
+	summary=$(echo $2 | tail -n1)
+	printf "%-20s %s%%\n" "$bench" "$(percentage $summary)"
+}
diff --git a/tools/testing/selftests/bpf/progs/bloom_filter_bench.c b/tools/testing/selftests/bpf/progs/bloom_filter_bench.c
new file mode 100644
index 000000000000..d9a88dd1ea65
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/bloom_filter_bench.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include <errno.h>
+#include <linux/bpf.h>
+#include <stdbool.h>
+#include <bpf/bpf_helpers.h>
+
+char _license[] SEC("license") = "GPL";
+
+struct bpf_map;
+
+__u8 rand_vals[2500000];
+const __u32 nr_rand_bytes = 2500000;
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__uint(key_size, sizeof(__u32));
+	/* max entries and value_size will be set programmatically.
+	 * They are configurable from the userspace bench program.
+	 */
+} array_map SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_BLOOM_FILTER);
+	/* max entries,  value_size, and # of hash functions will be set
+	 * programmatically. They are configurable from the userspace
+	 * bench program.
+	 */
+	__uint(map_extra, 3);
+} bloom_map SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	/* max entries, key_size, and value_size, will be set
+	 * programmatically. They are configurable from the userspace
+	 * bench program.
+	 */
+} hashmap SEC(".maps");
+
+struct callback_ctx {
+	struct bpf_map *map;
+	bool update;
+};
+
+/* Tracks the number of hits, drops, and false hits */
+struct {
+	__u32 stats[3];
+} __attribute__((__aligned__(256))) percpu_stats[256];
+
+const __u32 hit_key  = 0;
+const __u32 drop_key  = 1;
+const __u32 false_hit_key = 2;
+
+__u8 value_size;
+
+const volatile bool hashmap_use_bloom;
+const volatile bool count_false_hits;
+
+int error = 0;
+
+static __always_inline void log_result(__u32 key)
+{
+	__u32 cpu = bpf_get_smp_processor_id();
+
+	percpu_stats[cpu & 255].stats[key]++;
+}
+
+static __u64
+bloom_callback(struct bpf_map *map, __u32 *key, void *val,
+	       struct callback_ctx *data)
+{
+	int err;
+
+	if (data->update)
+		err = bpf_map_push_elem(data->map, val, 0);
+	else
+		err = bpf_map_peek_elem(data->map, val);
+
+	if (err) {
+		error |= 1;
+		return 1; /* stop the iteration */
+	}
+
+	log_result(hit_key);
+
+	return 0;
+}
+
+SEC("fentry/__x64_sys_getpgid")
+int bloom_lookup(void *ctx)
+{
+	struct callback_ctx data;
+
+	data.map = (struct bpf_map *)&bloom_map;
+	data.update = false;
+
+	bpf_for_each_map_elem(&array_map, bloom_callback, &data, 0);
+
+	return 0;
+}
+
+SEC("fentry/__x64_sys_getpgid")
+int bloom_update(void *ctx)
+{
+	struct callback_ctx data;
+
+	data.map = (struct bpf_map *)&bloom_map;
+	data.update = true;
+
+	bpf_for_each_map_elem(&array_map, bloom_callback, &data, 0);
+
+	return 0;
+}
+
+SEC("fentry/__x64_sys_getpgid")
+int bloom_hashmap_lookup(void *ctx)
+{
+	__u64 *result;
+	int i, err;
+
+	__u32 index = bpf_get_prandom_u32();
+	__u32 bitmask = (1ULL << 21) - 1;
+
+	for (i = 0; i < 1024; i++, index += value_size) {
+		index = index & bitmask;
+
+		if (hashmap_use_bloom) {
+			err = bpf_map_peek_elem(&bloom_map,
+						rand_vals + index);
+			if (err) {
+				if (err != -ENOENT) {
+					error |= 2;
+					return 0;
+				}
+				log_result(hit_key);
+				continue;
+			}
+		}
+
+		result = bpf_map_lookup_elem(&hashmap,
+					     rand_vals + index);
+		if (result) {
+			log_result(hit_key);
+		} else {
+			if (hashmap_use_bloom && count_false_hits)
+				log_result(false_hit_key);
+			log_result(drop_key);
+		}
+	}
+
+	return 0;
+}
-- 
cgit v1.2.3


From f44bc543a079c2ebc534cbfabd6fbfcfc2b09f72 Mon Sep 17 00:00:00 2001
From: Joanne Koong <joannekoong@fb.com>
Date: Wed, 27 Oct 2021 16:45:04 -0700
Subject: bpf/benchs: Add benchmarks for comparing hashmap lookups w/ vs. w/out
 bloom filter

This patch adds benchmark tests for comparing the performance of hashmap
lookups without the bloom filter vs. hashmap lookups with the bloom filter.

Checking the bloom filter first for whether the element exists should
overall enable a higher throughput for hashmap lookups, since if the
element does not exist in the bloom filter, we can avoid a costly lookup in
the hashmap.

On average, using 5 hash functions in the bloom filter tended to perform
the best across the widest range of different entry sizes. The benchmark
results using 5 hash functions (running on 8 threads on a machine with one
numa node, and taking the average of 3 runs) were roughly as follows:

value_size = 4 bytes -
	10k entries: 30% faster
	50k entries: 40% faster
	100k entries: 40% faster
	500k entres: 70% faster
	1 million entries: 90% faster
	5 million entries: 140% faster

value_size = 8 bytes -
	10k entries: 30% faster
	50k entries: 40% faster
	100k entries: 50% faster
	500k entres: 80% faster
	1 million entries: 100% faster
	5 million entries: 150% faster

value_size = 16 bytes -
	10k entries: 20% faster
	50k entries: 30% faster
	100k entries: 35% faster
	500k entres: 65% faster
	1 million entries: 85% faster
	5 million entries: 110% faster

value_size = 40 bytes -
	10k entries: 5% faster
	50k entries: 15% faster
	100k entries: 20% faster
	500k entres: 65% faster
	1 million entries: 75% faster
	5 million entries: 120% faster

Signed-off-by: Joanne Koong <joannekoong@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211027234504.30744-6-joannekoong@fb.com
---
 tools/testing/selftests/bpf/bench.c                | 23 +++++++--
 .../selftests/bpf/benchs/bench_bloom_filter_map.c  | 57 ++++++++++++++++++++++
 .../bpf/benchs/run_bench_bloom_filter_map.sh       | 17 +++++++
 tools/testing/selftests/bpf/benchs/run_common.sh   | 12 +++++
 4 files changed, 104 insertions(+), 5 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/bench.c b/tools/testing/selftests/bpf/bench.c
index a1d5dffe5ef6..cc4722f693e9 100644
--- a/tools/testing/selftests/bpf/bench.c
+++ b/tools/testing/selftests/bpf/bench.c
@@ -92,20 +92,22 @@ void hits_drops_report_progress(int iter, struct bench_res *res, long delta_ns)
 	printf("Iter %3d (%7.3lfus): ",
 	       iter, (delta_ns - 1000000000) / 1000.0);
 
-	printf("hits %8.3lfM/s (%7.3lfM/prod), drops %8.3lfM/s\n",
-	       hits_per_sec, hits_per_prod, drops_per_sec);
+	printf("hits %8.3lfM/s (%7.3lfM/prod), drops %8.3lfM/s, total operations %8.3lfM/s\n",
+	       hits_per_sec, hits_per_prod, drops_per_sec, hits_per_sec + drops_per_sec);
 }
 
 void hits_drops_report_final(struct bench_res res[], int res_cnt)
 {
 	int i;
-	double hits_mean = 0.0, drops_mean = 0.0;
-	double hits_stddev = 0.0, drops_stddev = 0.0;
+	double hits_mean = 0.0, drops_mean = 0.0, total_ops_mean = 0.0;
+	double hits_stddev = 0.0, drops_stddev = 0.0, total_ops_stddev = 0.0;
+	double total_ops;
 
 	for (i = 0; i < res_cnt; i++) {
 		hits_mean += res[i].hits / 1000000.0 / (0.0 + res_cnt);
 		drops_mean += res[i].drops / 1000000.0 / (0.0 + res_cnt);
 	}
+	total_ops_mean = hits_mean + drops_mean;
 
 	if (res_cnt > 1)  {
 		for (i = 0; i < res_cnt; i++) {
@@ -115,14 +117,21 @@ void hits_drops_report_final(struct bench_res res[], int res_cnt)
 			drops_stddev += (drops_mean - res[i].drops / 1000000.0) *
 					(drops_mean - res[i].drops / 1000000.0) /
 					(res_cnt - 1.0);
+			total_ops = res[i].hits + res[i].drops;
+			total_ops_stddev += (total_ops_mean - total_ops / 1000000.0) *
+					(total_ops_mean - total_ops / 1000000.0) /
+					(res_cnt - 1.0);
 		}
 		hits_stddev = sqrt(hits_stddev);
 		drops_stddev = sqrt(drops_stddev);
+		total_ops_stddev = sqrt(total_ops_stddev);
 	}
 	printf("Summary: hits %8.3lf \u00B1 %5.3lfM/s (%7.3lfM/prod), ",
 	       hits_mean, hits_stddev, hits_mean / env.producer_cnt);
-	printf("drops %8.3lf \u00B1 %5.3lfM/s\n",
+	printf("drops %8.3lf \u00B1 %5.3lfM/s, ",
 	       drops_mean, drops_stddev);
+	printf("total operations %8.3lf \u00B1 %5.3lfM/s\n",
+	       total_ops_mean, total_ops_stddev);
 }
 
 const char *argp_program_version = "benchmark";
@@ -357,6 +366,8 @@ extern const struct bench bench_pb_custom;
 extern const struct bench bench_bloom_lookup;
 extern const struct bench bench_bloom_update;
 extern const struct bench bench_bloom_false_positive;
+extern const struct bench bench_hashmap_without_bloom;
+extern const struct bench bench_hashmap_with_bloom;
 
 static const struct bench *benchs[] = {
 	&bench_count_global,
@@ -381,6 +392,8 @@ static const struct bench *benchs[] = {
 	&bench_bloom_lookup,
 	&bench_bloom_update,
 	&bench_bloom_false_positive,
+	&bench_hashmap_without_bloom,
+	&bench_hashmap_with_bloom,
 };
 
 static void setup_benchmark()
diff --git a/tools/testing/selftests/bpf/benchs/bench_bloom_filter_map.c b/tools/testing/selftests/bpf/benchs/bench_bloom_filter_map.c
index 4bafad418a8a..6eeeed2913e6 100644
--- a/tools/testing/selftests/bpf/benchs/bench_bloom_filter_map.c
+++ b/tools/testing/selftests/bpf/benchs/bench_bloom_filter_map.c
@@ -346,6 +346,41 @@ static void false_positive_setup(void)
 	}
 }
 
+static void hashmap_with_bloom_setup(void)
+{
+	struct bpf_link *link;
+
+	ctx.use_hashmap = true;
+	ctx.hashmap_use_bloom = true;
+
+	ctx.skel = setup_skeleton();
+
+	populate_maps();
+
+	link = bpf_program__attach(ctx.skel->progs.bloom_hashmap_lookup);
+	if (!link) {
+		fprintf(stderr, "failed to attach program!\n");
+		exit(1);
+	}
+}
+
+static void hashmap_no_bloom_setup(void)
+{
+	struct bpf_link *link;
+
+	ctx.use_hashmap = true;
+
+	ctx.skel = setup_skeleton();
+
+	populate_maps();
+
+	link = bpf_program__attach(ctx.skel->progs.bloom_hashmap_lookup);
+	if (!link) {
+		fprintf(stderr, "failed to attach program!\n");
+		exit(1);
+	}
+}
+
 static void measure(struct bench_res *res)
 {
 	unsigned long total_hits = 0, total_drops = 0, total_false_hits = 0;
@@ -418,3 +453,25 @@ const struct bench bench_bloom_false_positive = {
 	.report_progress = false_hits_report_progress,
 	.report_final = false_hits_report_final,
 };
+
+const struct bench bench_hashmap_without_bloom = {
+	.name = "hashmap-without-bloom",
+	.validate = validate,
+	.setup = hashmap_no_bloom_setup,
+	.producer_thread = producer,
+	.consumer_thread = consumer,
+	.measure = measure,
+	.report_progress = hits_drops_report_progress,
+	.report_final = hits_drops_report_final,
+};
+
+const struct bench bench_hashmap_with_bloom = {
+	.name = "hashmap-with-bloom",
+	.validate = validate,
+	.setup = hashmap_with_bloom_setup,
+	.producer_thread = producer,
+	.consumer_thread = consumer,
+	.measure = measure,
+	.report_progress = hits_drops_report_progress,
+	.report_final = hits_drops_report_final,
+};
diff --git a/tools/testing/selftests/bpf/benchs/run_bench_bloom_filter_map.sh b/tools/testing/selftests/bpf/benchs/run_bench_bloom_filter_map.sh
index d03d0e5c91cd..8ffd385ab2f4 100755
--- a/tools/testing/selftests/bpf/benchs/run_bench_bloom_filter_map.sh
+++ b/tools/testing/selftests/bpf/benchs/run_bench_bloom_filter_map.sh
@@ -26,3 +26,20 @@ subtitle "value_size: $v bytes, # threads: $t, # hashes: $h"
 done
 done
 done
+
+header "Hashmap without bloom filter vs. hashmap with bloom filter (throughput, 8 threads)"
+for v in 2 4 8 16 40; do
+for h in {1..10}; do
+subtitle "value_size: $v, # hashes: $h"
+	for e in 10000 50000 75000 100000 250000 500000 750000 1000000 2500000 5000000; do
+		printf "%'d entries -\n" $e
+		printf "\t"
+		summarize_total "Hashmap without bloom filter: " \
+			"$($RUN_BENCH --nr_hash_funcs $h --nr_entries $e --value_size $v -p 8 hashmap-without-bloom)"
+		printf "\t"
+		summarize_total "Hashmap with bloom filter: " \
+			"$($RUN_BENCH --nr_hash_funcs $h --nr_entries $e --value_size $v -p 8 hashmap-with-bloom)"
+	done
+	printf "\n"
+done
+done
diff --git a/tools/testing/selftests/bpf/benchs/run_common.sh b/tools/testing/selftests/bpf/benchs/run_common.sh
index 670f23b037c4..9a16be78b180 100644
--- a/tools/testing/selftests/bpf/benchs/run_common.sh
+++ b/tools/testing/selftests/bpf/benchs/run_common.sh
@@ -33,6 +33,11 @@ function percentage()
 	echo "$*" | sed -E "s/.*Percentage\s=\s+([0-9]+\.[0-9]+).*/\1/"
 }
 
+function total()
+{
+	echo "$*" | sed -E "s/.*total operations\s+([0-9]+\.[0-9]+ ± [0-9]+\.[0-9]+M\/s).*/\1/"
+}
+
 function summarize()
 {
 	bench="$1"
@@ -46,3 +51,10 @@ function summarize_percentage()
 	summary=$(echo $2 | tail -n1)
 	printf "%-20s %s%%\n" "$bench" "$(percentage $summary)"
 }
+
+function summarize_total()
+{
+	bench="$1"
+	summary=$(echo $2 | tail -n1)
+	printf "%-20s %s\n" "$bench" "$(total $summary)"
+}
-- 
cgit v1.2.3


From 087cba799ced0573df499ddd3b2d8777e50cfb62 Mon Sep 17 00:00:00 2001
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Date: Thu, 28 Oct 2021 12:04:59 +0530
Subject: selftests/bpf: Add weak/typeless ksym test for light skeleton

Also, avoid using CO-RE features, as lskel doesn't support CO-RE, yet.
Include both light and libbpf skeleton in same file to test both of them
together.

In c48e51c8b07a ("bpf: selftests: Add selftests for module kfunc support"),
I added support for generating both lskel and libbpf skel for a BPF
object, however the name parameter for bpftool caused collisions when
included in same file together. This meant that every test needed a
separate file for a libbpf/light skeleton separation instead of
subtests.

Change that by appending a "_lskel" suffix to the name for files using
light skeleton, and convert all existing users.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211028063501.2239335-7-memxor@gmail.com
---
 tools/testing/selftests/bpf/Makefile               |  4 +--
 tools/testing/selftests/bpf/prog_tests/atomics.c   | 34 +++++++++---------
 .../selftests/bpf/prog_tests/fentry_fexit.c        | 16 ++++-----
 .../testing/selftests/bpf/prog_tests/fentry_test.c | 14 ++++----
 .../testing/selftests/bpf/prog_tests/fexit_sleep.c | 12 +++----
 .../testing/selftests/bpf/prog_tests/fexit_test.c  | 14 ++++----
 .../testing/selftests/bpf/prog_tests/kfunc_call.c  |  6 ++--
 tools/testing/selftests/bpf/prog_tests/ksyms_btf.c | 35 +++++++++++++++++--
 .../selftests/bpf/prog_tests/ksyms_module.c        | 40 +++++++++++++++++++---
 .../selftests/bpf/prog_tests/ksyms_module_libbpf.c | 28 ---------------
 tools/testing/selftests/bpf/prog_tests/ringbuf.c   | 12 +++----
 .../selftests/bpf/prog_tests/trace_printk.c        | 14 ++++----
 .../selftests/bpf/prog_tests/trace_vprintk.c       | 12 +++----
 .../testing/selftests/bpf/prog_tests/verif_stats.c |  6 ++--
 .../testing/selftests/bpf/progs/test_ksyms_weak.c  |  2 +-
 15 files changed, 142 insertions(+), 107 deletions(-)
 delete mode 100644 tools/testing/selftests/bpf/prog_tests/ksyms_module_libbpf.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 2c464cb78d6b..f49cb5fc85af 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -325,7 +325,7 @@ LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h		\
 LSKELS := kfunc_call_test.c fentry_test.c fexit_test.c fexit_sleep.c \
 	test_ringbuf.c atomics.c trace_printk.c trace_vprintk.c
 # Generate both light skeleton and libbpf skeleton for these
-LSKELS_EXTRA := test_ksyms_module.c
+LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c
 SKEL_BLACKLIST += $$(LSKELS)
 
 test_static_linked.skel.h-deps := test_static_linked1.o test_static_linked2.o
@@ -404,7 +404,7 @@ $(TRUNNER_BPF_LSKELS): %.lskel.h: %.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
 	$(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
 	$(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
 	$(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
-	$(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=)) > $$@
+	$(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.linked3.o) name $$(notdir $$(<:.o=_lskel)) > $$@
 
 $(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
 	$$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.o))
diff --git a/tools/testing/selftests/bpf/prog_tests/atomics.c b/tools/testing/selftests/bpf/prog_tests/atomics.c
index 1486be5d3209..0f9525293881 100644
--- a/tools/testing/selftests/bpf/prog_tests/atomics.c
+++ b/tools/testing/selftests/bpf/prog_tests/atomics.c
@@ -4,13 +4,13 @@
 
 #include "atomics.lskel.h"
 
-static void test_add(struct atomics *skel)
+static void test_add(struct atomics_lskel *skel)
 {
 	int err, prog_fd;
 	__u32 duration = 0, retval;
 	int link_fd;
 
-	link_fd = atomics__add__attach(skel);
+	link_fd = atomics_lskel__add__attach(skel);
 	if (!ASSERT_GT(link_fd, 0, "attach(add)"))
 		return;
 
@@ -36,13 +36,13 @@ cleanup:
 	close(link_fd);
 }
 
-static void test_sub(struct atomics *skel)
+static void test_sub(struct atomics_lskel *skel)
 {
 	int err, prog_fd;
 	__u32 duration = 0, retval;
 	int link_fd;
 
-	link_fd = atomics__sub__attach(skel);
+	link_fd = atomics_lskel__sub__attach(skel);
 	if (!ASSERT_GT(link_fd, 0, "attach(sub)"))
 		return;
 
@@ -69,13 +69,13 @@ cleanup:
 	close(link_fd);
 }
 
-static void test_and(struct atomics *skel)
+static void test_and(struct atomics_lskel *skel)
 {
 	int err, prog_fd;
 	__u32 duration = 0, retval;
 	int link_fd;
 
-	link_fd = atomics__and__attach(skel);
+	link_fd = atomics_lskel__and__attach(skel);
 	if (!ASSERT_GT(link_fd, 0, "attach(and)"))
 		return;
 
@@ -97,13 +97,13 @@ cleanup:
 	close(link_fd);
 }
 
-static void test_or(struct atomics *skel)
+static void test_or(struct atomics_lskel *skel)
 {
 	int err, prog_fd;
 	__u32 duration = 0, retval;
 	int link_fd;
 
-	link_fd = atomics__or__attach(skel);
+	link_fd = atomics_lskel__or__attach(skel);
 	if (!ASSERT_GT(link_fd, 0, "attach(or)"))
 		return;
 
@@ -126,13 +126,13 @@ cleanup:
 	close(link_fd);
 }
 
-static void test_xor(struct atomics *skel)
+static void test_xor(struct atomics_lskel *skel)
 {
 	int err, prog_fd;
 	__u32 duration = 0, retval;
 	int link_fd;
 
-	link_fd = atomics__xor__attach(skel);
+	link_fd = atomics_lskel__xor__attach(skel);
 	if (!ASSERT_GT(link_fd, 0, "attach(xor)"))
 		return;
 
@@ -154,13 +154,13 @@ cleanup:
 	close(link_fd);
 }
 
-static void test_cmpxchg(struct atomics *skel)
+static void test_cmpxchg(struct atomics_lskel *skel)
 {
 	int err, prog_fd;
 	__u32 duration = 0, retval;
 	int link_fd;
 
-	link_fd = atomics__cmpxchg__attach(skel);
+	link_fd = atomics_lskel__cmpxchg__attach(skel);
 	if (!ASSERT_GT(link_fd, 0, "attach(cmpxchg)"))
 		return;
 
@@ -183,13 +183,13 @@ cleanup:
 	close(link_fd);
 }
 
-static void test_xchg(struct atomics *skel)
+static void test_xchg(struct atomics_lskel *skel)
 {
 	int err, prog_fd;
 	__u32 duration = 0, retval;
 	int link_fd;
 
-	link_fd = atomics__xchg__attach(skel);
+	link_fd = atomics_lskel__xchg__attach(skel);
 	if (!ASSERT_GT(link_fd, 0, "attach(xchg)"))
 		return;
 
@@ -212,10 +212,10 @@ cleanup:
 
 void test_atomics(void)
 {
-	struct atomics *skel;
+	struct atomics_lskel *skel;
 	__u32 duration = 0;
 
-	skel = atomics__open_and_load();
+	skel = atomics_lskel__open_and_load();
 	if (CHECK(!skel, "skel_load", "atomics skeleton failed\n"))
 		return;
 
@@ -243,5 +243,5 @@ void test_atomics(void)
 		test_xchg(skel);
 
 cleanup:
-	atomics__destroy(skel);
+	atomics_lskel__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/fentry_fexit.c b/tools/testing/selftests/bpf/prog_tests/fentry_fexit.c
index 91154c2ba256..4374ac8a8a91 100644
--- a/tools/testing/selftests/bpf/prog_tests/fentry_fexit.c
+++ b/tools/testing/selftests/bpf/prog_tests/fentry_fexit.c
@@ -6,23 +6,23 @@
 
 void test_fentry_fexit(void)
 {
-	struct fentry_test *fentry_skel = NULL;
-	struct fexit_test *fexit_skel = NULL;
+	struct fentry_test_lskel *fentry_skel = NULL;
+	struct fexit_test_lskel *fexit_skel = NULL;
 	__u64 *fentry_res, *fexit_res;
 	__u32 duration = 0, retval;
 	int err, prog_fd, i;
 
-	fentry_skel = fentry_test__open_and_load();
+	fentry_skel = fentry_test_lskel__open_and_load();
 	if (CHECK(!fentry_skel, "fentry_skel_load", "fentry skeleton failed\n"))
 		goto close_prog;
-	fexit_skel = fexit_test__open_and_load();
+	fexit_skel = fexit_test_lskel__open_and_load();
 	if (CHECK(!fexit_skel, "fexit_skel_load", "fexit skeleton failed\n"))
 		goto close_prog;
 
-	err = fentry_test__attach(fentry_skel);
+	err = fentry_test_lskel__attach(fentry_skel);
 	if (CHECK(err, "fentry_attach", "fentry attach failed: %d\n", err))
 		goto close_prog;
-	err = fexit_test__attach(fexit_skel);
+	err = fexit_test_lskel__attach(fexit_skel);
 	if (CHECK(err, "fexit_attach", "fexit attach failed: %d\n", err))
 		goto close_prog;
 
@@ -44,6 +44,6 @@ void test_fentry_fexit(void)
 	}
 
 close_prog:
-	fentry_test__destroy(fentry_skel);
-	fexit_test__destroy(fexit_skel);
+	fentry_test_lskel__destroy(fentry_skel);
+	fexit_test_lskel__destroy(fexit_skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/fentry_test.c b/tools/testing/selftests/bpf/prog_tests/fentry_test.c
index 174c89e7456e..12921b3850d2 100644
--- a/tools/testing/selftests/bpf/prog_tests/fentry_test.c
+++ b/tools/testing/selftests/bpf/prog_tests/fentry_test.c
@@ -3,19 +3,19 @@
 #include <test_progs.h>
 #include "fentry_test.lskel.h"
 
-static int fentry_test(struct fentry_test *fentry_skel)
+static int fentry_test(struct fentry_test_lskel *fentry_skel)
 {
 	int err, prog_fd, i;
 	__u32 duration = 0, retval;
 	int link_fd;
 	__u64 *result;
 
-	err = fentry_test__attach(fentry_skel);
+	err = fentry_test_lskel__attach(fentry_skel);
 	if (!ASSERT_OK(err, "fentry_attach"))
 		return err;
 
 	/* Check that already linked program can't be attached again. */
-	link_fd = fentry_test__test1__attach(fentry_skel);
+	link_fd = fentry_test_lskel__test1__attach(fentry_skel);
 	if (!ASSERT_LT(link_fd, 0, "fentry_attach_link"))
 		return -1;
 
@@ -31,7 +31,7 @@ static int fentry_test(struct fentry_test *fentry_skel)
 			return -1;
 	}
 
-	fentry_test__detach(fentry_skel);
+	fentry_test_lskel__detach(fentry_skel);
 
 	/* zero results for re-attach test */
 	memset(fentry_skel->bss, 0, sizeof(*fentry_skel->bss));
@@ -40,10 +40,10 @@ static int fentry_test(struct fentry_test *fentry_skel)
 
 void test_fentry_test(void)
 {
-	struct fentry_test *fentry_skel = NULL;
+	struct fentry_test_lskel *fentry_skel = NULL;
 	int err;
 
-	fentry_skel = fentry_test__open_and_load();
+	fentry_skel = fentry_test_lskel__open_and_load();
 	if (!ASSERT_OK_PTR(fentry_skel, "fentry_skel_load"))
 		goto cleanup;
 
@@ -55,5 +55,5 @@ void test_fentry_test(void)
 	ASSERT_OK(err, "fentry_second_attach");
 
 cleanup:
-	fentry_test__destroy(fentry_skel);
+	fentry_test_lskel__destroy(fentry_skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_sleep.c b/tools/testing/selftests/bpf/prog_tests/fexit_sleep.c
index 4e7f4b42ea29..f949647dbbc2 100644
--- a/tools/testing/selftests/bpf/prog_tests/fexit_sleep.c
+++ b/tools/testing/selftests/bpf/prog_tests/fexit_sleep.c
@@ -10,7 +10,7 @@
 
 static int do_sleep(void *skel)
 {
-	struct fexit_sleep *fexit_skel = skel;
+	struct fexit_sleep_lskel *fexit_skel = skel;
 	struct timespec ts1 = { .tv_nsec = 1 };
 	struct timespec ts2 = { .tv_sec = 10 };
 
@@ -25,16 +25,16 @@ static char child_stack[STACK_SIZE];
 
 void test_fexit_sleep(void)
 {
-	struct fexit_sleep *fexit_skel = NULL;
+	struct fexit_sleep_lskel *fexit_skel = NULL;
 	int wstatus, duration = 0;
 	pid_t cpid;
 	int err, fexit_cnt;
 
-	fexit_skel = fexit_sleep__open_and_load();
+	fexit_skel = fexit_sleep_lskel__open_and_load();
 	if (CHECK(!fexit_skel, "fexit_skel_load", "fexit skeleton failed\n"))
 		goto cleanup;
 
-	err = fexit_sleep__attach(fexit_skel);
+	err = fexit_sleep_lskel__attach(fexit_skel);
 	if (CHECK(err, "fexit_attach", "fexit attach failed: %d\n", err))
 		goto cleanup;
 
@@ -60,7 +60,7 @@ void test_fexit_sleep(void)
 	 */
 	close(fexit_skel->progs.nanosleep_fentry.prog_fd);
 	close(fexit_skel->progs.nanosleep_fexit.prog_fd);
-	fexit_sleep__detach(fexit_skel);
+	fexit_sleep_lskel__detach(fexit_skel);
 
 	/* kill the thread to unwind sys_nanosleep stack through the trampoline */
 	kill(cpid, 9);
@@ -78,5 +78,5 @@ void test_fexit_sleep(void)
 		goto cleanup;
 
 cleanup:
-	fexit_sleep__destroy(fexit_skel);
+	fexit_sleep_lskel__destroy(fexit_skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_test.c b/tools/testing/selftests/bpf/prog_tests/fexit_test.c
index af3dba726701..d4887d8bb396 100644
--- a/tools/testing/selftests/bpf/prog_tests/fexit_test.c
+++ b/tools/testing/selftests/bpf/prog_tests/fexit_test.c
@@ -3,19 +3,19 @@
 #include <test_progs.h>
 #include "fexit_test.lskel.h"
 
-static int fexit_test(struct fexit_test *fexit_skel)
+static int fexit_test(struct fexit_test_lskel *fexit_skel)
 {
 	int err, prog_fd, i;
 	__u32 duration = 0, retval;
 	int link_fd;
 	__u64 *result;
 
-	err = fexit_test__attach(fexit_skel);
+	err = fexit_test_lskel__attach(fexit_skel);
 	if (!ASSERT_OK(err, "fexit_attach"))
 		return err;
 
 	/* Check that already linked program can't be attached again. */
-	link_fd = fexit_test__test1__attach(fexit_skel);
+	link_fd = fexit_test_lskel__test1__attach(fexit_skel);
 	if (!ASSERT_LT(link_fd, 0, "fexit_attach_link"))
 		return -1;
 
@@ -31,7 +31,7 @@ static int fexit_test(struct fexit_test *fexit_skel)
 			return -1;
 	}
 
-	fexit_test__detach(fexit_skel);
+	fexit_test_lskel__detach(fexit_skel);
 
 	/* zero results for re-attach test */
 	memset(fexit_skel->bss, 0, sizeof(*fexit_skel->bss));
@@ -40,10 +40,10 @@ static int fexit_test(struct fexit_test *fexit_skel)
 
 void test_fexit_test(void)
 {
-	struct fexit_test *fexit_skel = NULL;
+	struct fexit_test_lskel *fexit_skel = NULL;
 	int err;
 
-	fexit_skel = fexit_test__open_and_load();
+	fexit_skel = fexit_test_lskel__open_and_load();
 	if (!ASSERT_OK_PTR(fexit_skel, "fexit_skel_load"))
 		goto cleanup;
 
@@ -55,5 +55,5 @@ void test_fexit_test(void)
 	ASSERT_OK(err, "fexit_second_attach");
 
 cleanup:
-	fexit_test__destroy(fexit_skel);
+	fexit_test_lskel__destroy(fexit_skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/kfunc_call.c b/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
index 9611f2bc50df..5c9c0176991b 100644
--- a/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
+++ b/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
@@ -7,10 +7,10 @@
 
 static void test_main(void)
 {
-	struct kfunc_call_test *skel;
+	struct kfunc_call_test_lskel *skel;
 	int prog_fd, retval, err;
 
-	skel = kfunc_call_test__open_and_load();
+	skel = kfunc_call_test_lskel__open_and_load();
 	if (!ASSERT_OK_PTR(skel, "skel"))
 		return;
 
@@ -26,7 +26,7 @@ static void test_main(void)
 	ASSERT_OK(err, "bpf_prog_test_run(test2)");
 	ASSERT_EQ(retval, 3, "test2-retval");
 
-	kfunc_call_test__destroy(skel);
+	kfunc_call_test_lskel__destroy(skel);
 }
 
 static void test_subprog(void)
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms_btf.c b/tools/testing/selftests/bpf/prog_tests/ksyms_btf.c
index cf3acfa5a91d..79f6bd1e50d6 100644
--- a/tools/testing/selftests/bpf/prog_tests/ksyms_btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/ksyms_btf.c
@@ -7,6 +7,7 @@
 #include "test_ksyms_btf.skel.h"
 #include "test_ksyms_btf_null_check.skel.h"
 #include "test_ksyms_weak.skel.h"
+#include "test_ksyms_weak.lskel.h"
 
 static int duration;
 
@@ -89,11 +90,11 @@ static void test_weak_syms(void)
 	int err;
 
 	skel = test_ksyms_weak__open_and_load();
-	if (CHECK(!skel, "test_ksyms_weak__open_and_load", "failed\n"))
+	if (!ASSERT_OK_PTR(skel, "test_ksyms_weak__open_and_load"))
 		return;
 
 	err = test_ksyms_weak__attach(skel);
-	if (CHECK(err, "test_ksyms_weak__attach", "skeleton attach failed: %d\n", err))
+	if (!ASSERT_OK(err, "test_ksyms_weak__attach"))
 		goto cleanup;
 
 	/* trigger tracepoint */
@@ -109,6 +110,33 @@ cleanup:
 	test_ksyms_weak__destroy(skel);
 }
 
+static void test_weak_syms_lskel(void)
+{
+	struct test_ksyms_weak_lskel *skel;
+	struct test_ksyms_weak_lskel__data *data;
+	int err;
+
+	skel = test_ksyms_weak_lskel__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "test_ksyms_weak_lskel__open_and_load"))
+		return;
+
+	err = test_ksyms_weak_lskel__attach(skel);
+	if (!ASSERT_OK(err, "test_ksyms_weak_lskel__attach"))
+		goto cleanup;
+
+	/* trigger tracepoint */
+	usleep(1);
+
+	data = skel->data;
+	ASSERT_EQ(data->out__existing_typed, 0, "existing typed ksym");
+	ASSERT_NEQ(data->out__existing_typeless, -1, "existing typeless ksym");
+	ASSERT_EQ(data->out__non_existent_typeless, 0, "nonexistent typeless ksym");
+	ASSERT_EQ(data->out__non_existent_typed, 0, "nonexistent typed ksym");
+
+cleanup:
+	test_ksyms_weak_lskel__destroy(skel);
+}
+
 void test_ksyms_btf(void)
 {
 	int percpu_datasec;
@@ -136,4 +164,7 @@ void test_ksyms_btf(void)
 
 	if (test__start_subtest("weak_ksyms"))
 		test_weak_syms();
+
+	if (test__start_subtest("weak_ksyms_lskel"))
+		test_weak_syms_lskel();
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms_module.c b/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
index 831447878d7b..d490ad80eccb 100644
--- a/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
+++ b/tools/testing/selftests/bpf/prog_tests/ksyms_module.c
@@ -4,10 +4,11 @@
 #include <test_progs.h>
 #include <network_helpers.h>
 #include "test_ksyms_module.lskel.h"
+#include "test_ksyms_module.skel.h"
 
-void test_ksyms_module(void)
+void test_ksyms_module_lskel(void)
 {
-	struct test_ksyms_module *skel;
+	struct test_ksyms_module_lskel *skel;
 	int retval;
 	int err;
 
@@ -16,8 +17,8 @@ void test_ksyms_module(void)
 		return;
 	}
 
-	skel = test_ksyms_module__open_and_load();
-	if (!ASSERT_OK_PTR(skel, "test_ksyms_module__open_and_load"))
+	skel = test_ksyms_module_lskel__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "test_ksyms_module_lskel__open_and_load"))
 		return;
 	err = bpf_prog_test_run(skel->progs.load.prog_fd, 1, &pkt_v4, sizeof(pkt_v4),
 				NULL, NULL, (__u32 *)&retval, NULL);
@@ -25,6 +26,37 @@ void test_ksyms_module(void)
 		goto cleanup;
 	ASSERT_EQ(retval, 0, "retval");
 	ASSERT_EQ(skel->bss->out_bpf_testmod_ksym, 42, "bpf_testmod_ksym");
+cleanup:
+	test_ksyms_module_lskel__destroy(skel);
+}
+
+void test_ksyms_module_libbpf(void)
+{
+	struct test_ksyms_module *skel;
+	int retval, err;
+
+	if (!env.has_testmod) {
+		test__skip();
+		return;
+	}
+
+	skel = test_ksyms_module__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "test_ksyms_module__open"))
+		return;
+	err = bpf_prog_test_run(bpf_program__fd(skel->progs.load), 1, &pkt_v4,
+				sizeof(pkt_v4), NULL, NULL, (__u32 *)&retval, NULL);
+	if (!ASSERT_OK(err, "bpf_prog_test_run"))
+		goto cleanup;
+	ASSERT_EQ(retval, 0, "retval");
+	ASSERT_EQ(skel->bss->out_bpf_testmod_ksym, 42, "bpf_testmod_ksym");
 cleanup:
 	test_ksyms_module__destroy(skel);
 }
+
+void test_ksyms_module(void)
+{
+	if (test__start_subtest("lskel"))
+		test_ksyms_module_lskel();
+	if (test__start_subtest("libbpf"))
+		test_ksyms_module_libbpf();
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms_module_libbpf.c b/tools/testing/selftests/bpf/prog_tests/ksyms_module_libbpf.c
deleted file mode 100644
index e6343ef63af9..000000000000
--- a/tools/testing/selftests/bpf/prog_tests/ksyms_module_libbpf.c
+++ /dev/null
@@ -1,28 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <test_progs.h>
-#include <network_helpers.h>
-#include "test_ksyms_module.skel.h"
-
-void test_ksyms_module_libbpf(void)
-{
-	struct test_ksyms_module *skel;
-	int retval, err;
-
-	if (!env.has_testmod) {
-		test__skip();
-		return;
-	}
-
-	skel = test_ksyms_module__open_and_load();
-	if (!ASSERT_OK_PTR(skel, "test_ksyms_module__open"))
-		return;
-	err = bpf_prog_test_run(bpf_program__fd(skel->progs.load), 1, &pkt_v4,
-				sizeof(pkt_v4), NULL, NULL, (__u32 *)&retval, NULL);
-	if (!ASSERT_OK(err, "bpf_prog_test_run"))
-		goto cleanup;
-	ASSERT_EQ(retval, 0, "retval");
-	ASSERT_EQ(skel->bss->out_bpf_testmod_ksym, 42, "bpf_testmod_ksym");
-cleanup:
-	test_ksyms_module__destroy(skel);
-}
diff --git a/tools/testing/selftests/bpf/prog_tests/ringbuf.c b/tools/testing/selftests/bpf/prog_tests/ringbuf.c
index 4706cee84360..9a80fe8a6427 100644
--- a/tools/testing/selftests/bpf/prog_tests/ringbuf.c
+++ b/tools/testing/selftests/bpf/prog_tests/ringbuf.c
@@ -58,7 +58,7 @@ static int process_sample(void *ctx, void *data, size_t len)
 	}
 }
 
-static struct test_ringbuf *skel;
+static struct test_ringbuf_lskel *skel;
 static struct ring_buffer *ringbuf;
 
 static void trigger_samples()
@@ -90,13 +90,13 @@ void test_ringbuf(void)
 	int page_size = getpagesize();
 	void *mmap_ptr, *tmp_ptr;
 
-	skel = test_ringbuf__open();
+	skel = test_ringbuf_lskel__open();
 	if (CHECK(!skel, "skel_open", "skeleton open failed\n"))
 		return;
 
 	skel->maps.ringbuf.max_entries = page_size;
 
-	err = test_ringbuf__load(skel);
+	err = test_ringbuf_lskel__load(skel);
 	if (CHECK(err != 0, "skel_load", "skeleton load failed\n"))
 		goto cleanup;
 
@@ -154,7 +154,7 @@ void test_ringbuf(void)
 	if (CHECK(!ringbuf, "ringbuf_create", "failed to create ringbuf\n"))
 		goto cleanup;
 
-	err = test_ringbuf__attach(skel);
+	err = test_ringbuf_lskel__attach(skel);
 	if (CHECK(err, "skel_attach", "skeleton attachment failed: %d\n", err))
 		goto cleanup;
 
@@ -292,8 +292,8 @@ void test_ringbuf(void)
 	CHECK(skel->bss->discarded != 1, "err_discarded", "exp %ld, got %ld\n",
 	      1L, skel->bss->discarded);
 
-	test_ringbuf__detach(skel);
+	test_ringbuf_lskel__detach(skel);
 cleanup:
 	ring_buffer__free(ringbuf);
-	test_ringbuf__destroy(skel);
+	test_ringbuf_lskel__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/trace_printk.c b/tools/testing/selftests/bpf/prog_tests/trace_printk.c
index 3f7a7141265e..cade7f12315f 100644
--- a/tools/testing/selftests/bpf/prog_tests/trace_printk.c
+++ b/tools/testing/selftests/bpf/prog_tests/trace_printk.c
@@ -10,27 +10,27 @@
 
 void serial_test_trace_printk(void)
 {
+	struct trace_printk_lskel__bss *bss;
 	int err = 0, iter = 0, found = 0;
-	struct trace_printk__bss *bss;
-	struct trace_printk *skel;
+	struct trace_printk_lskel *skel;
 	char *buf = NULL;
 	FILE *fp = NULL;
 	size_t buflen;
 
-	skel = trace_printk__open();
+	skel = trace_printk_lskel__open();
 	if (!ASSERT_OK_PTR(skel, "trace_printk__open"))
 		return;
 
 	ASSERT_EQ(skel->rodata->fmt[0], 'T', "skel->rodata->fmt[0]");
 	skel->rodata->fmt[0] = 't';
 
-	err = trace_printk__load(skel);
+	err = trace_printk_lskel__load(skel);
 	if (!ASSERT_OK(err, "trace_printk__load"))
 		goto cleanup;
 
 	bss = skel->bss;
 
-	err = trace_printk__attach(skel);
+	err = trace_printk_lskel__attach(skel);
 	if (!ASSERT_OK(err, "trace_printk__attach"))
 		goto cleanup;
 
@@ -43,7 +43,7 @@ void serial_test_trace_printk(void)
 
 	/* wait for tracepoint to trigger */
 	usleep(1);
-	trace_printk__detach(skel);
+	trace_printk_lskel__detach(skel);
 
 	if (!ASSERT_GT(bss->trace_printk_ran, 0, "bss->trace_printk_ran"))
 		goto cleanup;
@@ -65,7 +65,7 @@ void serial_test_trace_printk(void)
 		goto cleanup;
 
 cleanup:
-	trace_printk__destroy(skel);
+	trace_printk_lskel__destroy(skel);
 	free(buf);
 	if (fp)
 		fclose(fp);
diff --git a/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c b/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
index 46101270cb1a..7a4e313e8558 100644
--- a/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
+++ b/tools/testing/selftests/bpf/prog_tests/trace_vprintk.c
@@ -10,20 +10,20 @@
 
 void serial_test_trace_vprintk(void)
 {
+	struct trace_vprintk_lskel__bss *bss;
 	int err = 0, iter = 0, found = 0;
-	struct trace_vprintk__bss *bss;
-	struct trace_vprintk *skel;
+	struct trace_vprintk_lskel *skel;
 	char *buf = NULL;
 	FILE *fp = NULL;
 	size_t buflen;
 
-	skel = trace_vprintk__open_and_load();
+	skel = trace_vprintk_lskel__open_and_load();
 	if (!ASSERT_OK_PTR(skel, "trace_vprintk__open_and_load"))
 		goto cleanup;
 
 	bss = skel->bss;
 
-	err = trace_vprintk__attach(skel);
+	err = trace_vprintk_lskel__attach(skel);
 	if (!ASSERT_OK(err, "trace_vprintk__attach"))
 		goto cleanup;
 
@@ -36,7 +36,7 @@ void serial_test_trace_vprintk(void)
 
 	/* wait for tracepoint to trigger */
 	usleep(1);
-	trace_vprintk__detach(skel);
+	trace_vprintk_lskel__detach(skel);
 
 	if (!ASSERT_GT(bss->trace_vprintk_ran, 0, "bss->trace_vprintk_ran"))
 		goto cleanup;
@@ -61,7 +61,7 @@ void serial_test_trace_vprintk(void)
 		goto cleanup;
 
 cleanup:
-	trace_vprintk__destroy(skel);
+	trace_vprintk_lskel__destroy(skel);
 	free(buf);
 	if (fp)
 		fclose(fp);
diff --git a/tools/testing/selftests/bpf/prog_tests/verif_stats.c b/tools/testing/selftests/bpf/prog_tests/verif_stats.c
index b4bae1340cf1..a47e7c0e1ffd 100644
--- a/tools/testing/selftests/bpf/prog_tests/verif_stats.c
+++ b/tools/testing/selftests/bpf/prog_tests/verif_stats.c
@@ -8,11 +8,11 @@
 void test_verif_stats(void)
 {
 	__u32 len = sizeof(struct bpf_prog_info);
+	struct trace_vprintk_lskel *skel;
 	struct bpf_prog_info info = {};
-	struct trace_vprintk *skel;
 	int err;
 
-	skel = trace_vprintk__open_and_load();
+	skel = trace_vprintk_lskel__open_and_load();
 	if (!ASSERT_OK_PTR(skel, "trace_vprintk__open_and_load"))
 		goto cleanup;
 
@@ -24,5 +24,5 @@ void test_verif_stats(void)
 		goto cleanup;
 
 cleanup:
-	trace_vprintk__destroy(skel);
+	trace_vprintk_lskel__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/progs/test_ksyms_weak.c b/tools/testing/selftests/bpf/progs/test_ksyms_weak.c
index 5f8379aadb29..8eadbd4caf7a 100644
--- a/tools/testing/selftests/bpf/progs/test_ksyms_weak.c
+++ b/tools/testing/selftests/bpf/progs/test_ksyms_weak.c
@@ -38,7 +38,7 @@ int pass_handler(const void *ctx)
 	/* tests existing symbols. */
 	rq = (struct rq *)bpf_per_cpu_ptr(&runqueues, 0);
 	if (rq)
-		out__existing_typed = rq->cpu;
+		out__existing_typed = 0;
 	out__existing_typeless = (__u64)&bpf_prog_active;
 
 	/* tests non-existent symbols. */
-- 
cgit v1.2.3


From c3fc706e94f5653def2783ffcd809a38676b7551 Mon Sep 17 00:00:00 2001
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Date: Thu, 28 Oct 2021 12:05:00 +0530
Subject: selftests/bpf: Fix fd cleanup in sk_lookup test

Similar to the fix in commit:
e31eec77e4ab ("bpf: selftests: Fix fd cleanup in get_branch_snapshot")

We use designated initializer to set fds to -1 without breaking on
future changes to MAX_SERVER constant denoting the array size.

The particular close(0) occurs on non-reuseport tests, so it can be seen
with -n 115/{2,3} but not 115/4. This can cause problems with future
tests if they depend on BTF fd never being acquired as fd 0, breaking
internal libbpf assumptions.

Fixes: 0ab5539f8584 ("selftests/bpf: Tests for BPF_SK_LOOKUP attach point")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211028063501.2239335-8-memxor@gmail.com
---
 tools/testing/selftests/bpf/prog_tests/sk_lookup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/sk_lookup.c b/tools/testing/selftests/bpf/prog_tests/sk_lookup.c
index aee41547e7f4..6db07401bc49 100644
--- a/tools/testing/selftests/bpf/prog_tests/sk_lookup.c
+++ b/tools/testing/selftests/bpf/prog_tests/sk_lookup.c
@@ -598,7 +598,7 @@ close:
 
 static void run_lookup_prog(const struct test *t)
 {
-	int server_fds[MAX_SERVERS] = { -1 };
+	int server_fds[] = { [0 ... MAX_SERVERS - 1] = -1 };
 	int client_fd, reuse_conn_fd = -1;
 	struct bpf_link *lookup_link;
 	int i, err;
@@ -1053,7 +1053,7 @@ static void run_sk_assign(struct test_sk_lookup *skel,
 			  struct bpf_program *lookup_prog,
 			  const char *remote_ip, const char *local_ip)
 {
-	int server_fds[MAX_SERVERS] = { -1 };
+	int server_fds[] = { [0 ... MAX_SERVERS - 1] = -1 };
 	struct bpf_sk_lookup ctx;
 	__u64 server_cookie;
 	int i, err;
-- 
cgit v1.2.3


From efadf2ad17a2d5dc90bda4e6e8b2f96af4c62dae Mon Sep 17 00:00:00 2001
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Date: Thu, 28 Oct 2021 12:05:01 +0530
Subject: selftests/bpf: Fix memory leak in test_ima

The allocated ring buffer is never freed, do so in the cleanup path.

Fixes: f446b570ac7e ("bpf/selftests: Update the IMA test to use BPF ring buffer")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211028063501.2239335-9-memxor@gmail.com
---
 tools/testing/selftests/bpf/prog_tests/test_ima.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/test_ima.c b/tools/testing/selftests/bpf/prog_tests/test_ima.c
index 0252f61d611a..97d8a6f84f4a 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_ima.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_ima.c
@@ -43,7 +43,7 @@ static int process_sample(void *ctx, void *data, size_t len)
 void test_test_ima(void)
 {
 	char measured_dir_template[] = "/tmp/ima_measuredXXXXXX";
-	struct ring_buffer *ringbuf;
+	struct ring_buffer *ringbuf = NULL;
 	const char *measured_dir;
 	char cmd[256];
 
@@ -85,5 +85,6 @@ close_clean:
 	err = system(cmd);
 	CHECK(err, "failed to run command", "%s, errno = %d\n", cmd, errno);
 close_prog:
+	ring_buffer__free(ringbuf);
 	ima__destroy(skel);
 }
-- 
cgit v1.2.3


From 3d5290ea1daeee5da2e46abda730351c2e5b1faa Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@nvidia.com>
Date: Wed, 27 Oct 2021 18:20:00 +0300
Subject: selftests: mlxsw: Test offloadability of root TBF

TBF can be used as a root qdisc, with the usual ETS/RED/TBF hierarchy below
it. This use should now be offloaded. Add a test that verifies that it is.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh b/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh
index ade79ef08de3..071a33d10c20 100755
--- a/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/sch_offload.sh
@@ -6,7 +6,9 @@
 
 ALL_TESTS="
 	test_root
+	test_port_tbf
 	test_etsprio
+	test_etsprio_port_tbf
 "
 NUM_NETIFS=1
 lib_dir=$(dirname $0)/../../../net/forwarding
@@ -221,6 +223,12 @@ test_root()
 	do_test_combinations 1 0
 }
 
+test_port_tbf()
+{
+	with_tbf 1: root \
+		do_test_combinations 8 1
+}
+
 do_test_etsprio()
 {
 	local parent=$1; shift
@@ -264,6 +272,12 @@ test_etsprio()
 	do_test_etsprio root ""
 }
 
+test_etsprio_port_tbf()
+{
+	with_tbf 1: root \
+		do_test_etsprio "parent 1:1" "-TBF"
+}
+
 cleanup()
 {
 	tc qdisc del dev $h1 root &>/dev/null
-- 
cgit v1.2.3


From 2b11e24ebaef77e7151ddcc1762429798b9f75d5 Mon Sep 17 00:00:00 2001
From: Petr Machata <petrm@nvidia.com>
Date: Wed, 27 Oct 2021 18:20:01 +0300
Subject: selftests: mlxsw: Test port shaper

TBF can be used as a root qdisc, in which case it is supposed to configure
port shaper. Add a test that verifies that this is so by installing a root
TBF with a ETS or PRIO below it, and then expecting individual bands to all
be shaped according to the root TBF configuration.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 .../selftests/net/forwarding/sch_tbf_etsprio.sh    | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh b/tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh
index 8bd85da1905a..75a37c189ef3 100644
--- a/tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh
+++ b/tools/testing/selftests/net/forwarding/sch_tbf_etsprio.sh
@@ -4,9 +4,12 @@
 ALL_TESTS="
 	ping_ipv4
 	tbf_test
+	tbf_root_test
 "
 source $lib_dir/sch_tbf_core.sh
 
+QDISC_TYPE=${QDISC% *}
+
 tbf_test_one()
 {
 	local bs=$1; shift
@@ -22,6 +25,8 @@ tbf_test_one()
 
 tbf_test()
 {
+	log_info "Testing root-$QDISC_TYPE-tbf"
+
 	# This test is used for both ETS and PRIO. Even though we only need two
 	# bands, PRIO demands a minimum of three.
 	tc qdisc add dev $swp2 root handle 10: $QDISC 3 priomap 2 1 0
@@ -29,6 +34,29 @@ tbf_test()
 	tc qdisc del dev $swp2 root
 }
 
+tbf_root_test()
+{
+	local bs=128K
+
+	log_info "Testing root-tbf-$QDISC_TYPE"
+
+	tc qdisc replace dev $swp2 root handle 1: \
+		tbf rate 400Mbit burst $bs limit 1M
+	tc qdisc replace dev $swp2 parent 1:1 handle 10: \
+		$QDISC 3 priomap 2 1 0
+	tc qdisc replace dev $swp2 parent 10:3 handle 103: \
+		bfifo limit 1M
+	tc qdisc replace dev $swp2 parent 10:2 handle 102: \
+		bfifo limit 1M
+	tc qdisc replace dev $swp2 parent 10:1 handle 101: \
+		bfifo limit 1M
+
+	do_tbf_test 10 400 $bs
+	do_tbf_test 11 400 $bs
+
+	tc qdisc del dev $swp2 root
+}
+
 trap cleanup EXIT
 
 setup_prepare
-- 
cgit v1.2.3


From e300a85db1f16a5805033feb56ec1861f02c7b1c Mon Sep 17 00:00:00 2001
From: Shuah Khan <skhan@linuxfoundation.org>
Date: Wed, 27 Oct 2021 14:28:46 -0600
Subject: selftests/net: update .gitignore with newly added tests

Update .gitignore with newly added tests:
	tools/testing/selftests/net/af_unix/test_unix_oob
	tools/testing/selftests/net/gro
	tools/testing/selftests/net/ioam6_parser
	tools/testing/selftests/net/toeplitz

Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/.gitignore | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore
index 19deb9cdf72f..501550501216 100644
--- a/tools/testing/selftests/net/.gitignore
+++ b/tools/testing/selftests/net/.gitignore
@@ -31,3 +31,7 @@ rxtimestamp
 timestamping
 txtimestamp
 so_netns_cookie
+test_unix_oob
+gro
+ioam6_parser
+toeplitz
-- 
cgit v1.2.3


From 34d7ecb3d4f772eb00ce1f7195ae30886ddf4d2e Mon Sep 17 00:00:00 2001
From: Nikolay Aleksandrov <nikolay@nvidia.com>
Date: Fri, 29 Oct 2021 15:05:27 +0300
Subject: selftests: net: bridge: update IGMP/MLD membership interval value

When I fixed IGMPv3/MLDv2 to use the bridge's multicast_membership_interval
value which is chosen by user-space instead of calculating it based on
multicast_query_interval and multicast_query_response_interval I forgot
to update the selftests relying on that behaviour. Now we have to
manually set the expected GMI value to perform the tests correctly and get
proper results (similar to IGMPv2 behaviour).

Fixes: fac3cb82a54a ("net: bridge: mcast: use multicast_membership_interval for IGMPv3")
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/forwarding/bridge_igmp.sh | 12 +++++++++---
 tools/testing/selftests/net/forwarding/bridge_mld.sh  | 12 +++++++++---
 2 files changed, 18 insertions(+), 6 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/forwarding/bridge_igmp.sh b/tools/testing/selftests/net/forwarding/bridge_igmp.sh
index 675eff45b037..1162836f8f32 100755
--- a/tools/testing/selftests/net/forwarding/bridge_igmp.sh
+++ b/tools/testing/selftests/net/forwarding/bridge_igmp.sh
@@ -482,10 +482,15 @@ v3exc_timeout_test()
 	local X=("192.0.2.20" "192.0.2.30")
 
 	# GMI should be 3 seconds
-	ip link set dev br0 type bridge mcast_query_interval 100 mcast_query_response_interval 100
+	ip link set dev br0 type bridge mcast_query_interval 100 \
+					mcast_query_response_interval 100 \
+					mcast_membership_interval 300
 
 	v3exclude_prepare $h1 $ALL_MAC $ALL_GROUP
-	ip link set dev br0 type bridge mcast_query_interval 500 mcast_query_response_interval 500
+	ip link set dev br0 type bridge mcast_query_interval 500 \
+					mcast_query_response_interval 500 \
+					mcast_membership_interval 1500
+
 	$MZ $h1 -c 1 -b $ALL_MAC -B $ALL_GROUP -t ip "proto=2,p=$MZPKT_ALLOW2" -q
 	sleep 3
 	bridge -j -d -s mdb show dev br0 \
@@ -517,7 +522,8 @@ v3exc_timeout_test()
 	log_test "IGMPv3 group $TEST_GROUP exclude timeout"
 
 	ip link set dev br0 type bridge mcast_query_interval 12500 \
-					mcast_query_response_interval 1000
+					mcast_query_response_interval 1000 \
+					mcast_membership_interval 26000
 
 	v3cleanup $swp1 $TEST_GROUP
 }
diff --git a/tools/testing/selftests/net/forwarding/bridge_mld.sh b/tools/testing/selftests/net/forwarding/bridge_mld.sh
index ffdcfa87ca2b..e2b9ff773c6b 100755
--- a/tools/testing/selftests/net/forwarding/bridge_mld.sh
+++ b/tools/testing/selftests/net/forwarding/bridge_mld.sh
@@ -479,10 +479,15 @@ mldv2exc_timeout_test()
 	local X=("2001:db8:1::20" "2001:db8:1::30")
 
 	# GMI should be 3 seconds
-	ip link set dev br0 type bridge mcast_query_interval 100 mcast_query_response_interval 100
+	ip link set dev br0 type bridge mcast_query_interval 100 \
+					mcast_query_response_interval 100 \
+					mcast_membership_interval 300
 
 	mldv2exclude_prepare $h1
-	ip link set dev br0 type bridge mcast_query_interval 500 mcast_query_response_interval 500
+	ip link set dev br0 type bridge mcast_query_interval 500 \
+					mcast_query_response_interval 500 \
+					mcast_membership_interval 1500
+
 	$MZ $h1 -c 1 $MZPKT_ALLOW2 -q
 	sleep 3
 	bridge -j -d -s mdb show dev br0 \
@@ -514,7 +519,8 @@ mldv2exc_timeout_test()
 	log_test "MLDv2 group $TEST_GROUP exclude timeout"
 
 	ip link set dev br0 type bridge mcast_query_interval 12500 \
-					mcast_query_response_interval 1000
+					mcast_query_response_interval 1000 \
+					mcast_membership_interval 26000
 
 	mldv2cleanup $swp1
 }
-- 
cgit v1.2.3


From f48ad69097fe79d1de13c4d8fef556d4c11c5e68 Mon Sep 17 00:00:00 2001
From: Andrea Righi <andrea.righi@canonical.com>
Date: Tue, 26 Oct 2021 16:34:09 +0200
Subject: selftests/bpf: Fix fclose/pclose mismatch in test_progs

Make sure to use pclose() to properly close the pipe opened by popen().

Fixes: 81f77fd0deeb ("bpf: add selftest for stackmap with BPF_F_STACK_BUILD_ID")
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20211026143409.42666-1-andrea.righi@canonical.com
---
 tools/testing/selftests/bpf/test_progs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index 1f4a48566991..c65986bd9d07 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -382,7 +382,7 @@ int extract_build_id(char *build_id, size_t size)
 
 	if (getline(&line, &len, fp) == -1)
 		goto err;
-	fclose(fp);
+	pclose(fp);
 
 	if (len > size)
 		len = size;
@@ -391,7 +391,7 @@ int extract_build_id(char *build_id, size_t size)
 	free(line);
 	return 0;
 err:
-	fclose(fp);
+	pclose(fp);
 	return -1;
 }
 
-- 
cgit v1.2.3


From b0ced8f290fb7bb03d23c4c3c3355e92a4be6e95 Mon Sep 17 00:00:00 2001
From: Jakub Kicinski <kuba@kernel.org>
Date: Fri, 29 Oct 2021 08:51:35 -0700
Subject: selftests: udp: test for passing SO_MARK as cmsg

Before fix:
|  Case IPv6 rejection returned 0, expected 1
|FAIL - 1/4 cases failed

With the fix:
| OK

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/.gitignore      |  1 +
 tools/testing/selftests/net/Makefile        |  2 +
 tools/testing/selftests/net/cmsg_so_mark.c  | 67 +++++++++++++++++++++++++++++
 tools/testing/selftests/net/cmsg_so_mark.sh | 61 ++++++++++++++++++++++++++
 4 files changed, 131 insertions(+)
 create mode 100644 tools/testing/selftests/net/cmsg_so_mark.c
 create mode 100755 tools/testing/selftests/net/cmsg_so_mark.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/.gitignore b/tools/testing/selftests/net/.gitignore
index 501550501216..7581a7348e1b 100644
--- a/tools/testing/selftests/net/.gitignore
+++ b/tools/testing/selftests/net/.gitignore
@@ -35,3 +35,4 @@ test_unix_oob
 gro
 ioam6_parser
 toeplitz
+cmsg_so_mark
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 492b273743b4..f56b652d5cc6 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -28,6 +28,7 @@ TEST_PROGS += veth.sh
 TEST_PROGS += ioam6.sh
 TEST_PROGS += gro.sh
 TEST_PROGS += gre_gso.sh
+TEST_PROGS += cmsg_so_mark.sh
 TEST_PROGS_EXTENDED := in_netns.sh
 TEST_GEN_FILES =  socket nettest
 TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy reuseport_addr_any
@@ -44,6 +45,7 @@ TEST_GEN_FILES += gro
 TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa
 TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict tls
 TEST_GEN_FILES += toeplitz
+TEST_GEN_FILES += cmsg_so_mark
 
 TEST_FILES := settings
 
diff --git a/tools/testing/selftests/net/cmsg_so_mark.c b/tools/testing/selftests/net/cmsg_so_mark.c
new file mode 100644
index 000000000000..27f2804892a7
--- /dev/null
+++ b/tools/testing/selftests/net/cmsg_so_mark.c
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include <errno.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <linux/types.h>
+#include <sys/socket.h>
+
+int main(int argc, const char **argv)
+{
+	char cbuf[CMSG_SPACE(sizeof(__u32))];
+	struct addrinfo hints, *ai;
+	struct cmsghdr *cmsg;
+	struct iovec iov[1];
+	struct msghdr msg;
+	int mark;
+	int err;
+	int fd;
+
+	if (argc != 4) {
+		fprintf(stderr, "Usage: %s <dst_ip> <port> <mark>\n", argv[0]);
+		return 1;
+	}
+	mark = atoi(argv[3]);
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_DGRAM;
+
+	ai = NULL;
+	err = getaddrinfo(argv[1], argv[2], &hints, &ai);
+	if (err) {
+		fprintf(stderr, "Can't resolve address: %s\n", strerror(errno));
+		return 1;
+	}
+
+	fd = socket(ai->ai_family, SOCK_DGRAM, IPPROTO_UDP);
+	if (fd < 0) {
+		fprintf(stderr, "Can't open socket: %s\n", strerror(errno));
+		freeaddrinfo(ai);
+		return 1;
+	}
+
+	iov[0].iov_base = "bla";
+	iov[0].iov_len = 4;
+
+	msg.msg_name = ai->ai_addr;
+	msg.msg_namelen = ai->ai_addrlen;
+	msg.msg_iov = iov;
+	msg.msg_iovlen = 1;
+	msg.msg_control = cbuf;
+	msg.msg_controllen = sizeof(cbuf);
+
+	cmsg = CMSG_FIRSTHDR(&msg);
+	cmsg->cmsg_level = SOL_SOCKET;
+	cmsg->cmsg_type = SO_MARK;
+	cmsg->cmsg_len = CMSG_LEN(sizeof(__u32));
+	*(__u32 *)CMSG_DATA(cmsg) = mark;
+
+	err = sendmsg(fd, &msg, 0);
+
+	close(fd);
+	freeaddrinfo(ai);
+	return err != 4;
+}
diff --git a/tools/testing/selftests/net/cmsg_so_mark.sh b/tools/testing/selftests/net/cmsg_so_mark.sh
new file mode 100755
index 000000000000..19c6aab8d0e9
--- /dev/null
+++ b/tools/testing/selftests/net/cmsg_so_mark.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+NS=ns
+IP4=172.16.0.1/24
+TGT4=172.16.0.2
+IP6=2001:db8:1::1/64
+TGT6=2001:db8:1::2
+MARK=1000
+
+cleanup()
+{
+    ip netns del $NS
+}
+
+trap cleanup EXIT
+
+# Namespaces
+ip netns add $NS
+
+# Connectivity
+ip -netns $NS link add type dummy
+ip -netns $NS link set dev dummy0 up
+ip -netns $NS addr add $IP4 dev dummy0
+ip -netns $NS addr add $IP6 dev dummy0
+
+ip -netns $NS rule add fwmark $MARK lookup 300
+ip -6 -netns $NS rule add fwmark $MARK lookup 300
+ip -netns $NS route add prohibit any table 300
+ip -6 -netns $NS route add prohibit any table 300
+
+# Test
+BAD=0
+TOTAL=0
+
+check_result() {
+    ((TOTAL++))
+    if [ $1 -ne $2 ]; then
+	echo "  Case $3 returned $1, expected $2"
+	((BAD++))
+    fi
+}
+
+ip netns exec $NS ./cmsg_so_mark $TGT4 1234 $((MARK + 1))
+check_result $? 0 "IPv4 pass"
+ip netns exec $NS ./cmsg_so_mark $TGT6 1234 $((MARK + 1))
+check_result $? 0 "IPv6 pass"
+
+ip netns exec $NS ./cmsg_so_mark $TGT4 1234 $MARK
+check_result $? 1 "IPv4 rejection"
+ip netns exec $NS ./cmsg_so_mark $TGT6 1234 $MARK
+check_result $? 1 "IPv6 rejection"
+
+# Summary
+if [ $BAD -ne 0 ]; then
+    echo "FAIL - $BAD/$TOTAL cases failed"
+    exit 1
+else
+    echo "OK"
+    exit 0
+fi
-- 
cgit v1.2.3


From 7c909a98042ce403c8497c5d6ff94dd53bdd2131 Mon Sep 17 00:00:00 2001
From: Geliang Tang <geliang.tang@suse.com>
Date: Fri, 29 Oct 2021 16:55:58 -0700
Subject: selftests: mptcp: fix proto type in link_failure tests

In listener_ns, we should pass srv_proto argument to mptcp_connect command,
not cl_proto.

Fixes: 7d1e6f1639044 ("selftests: mptcp: add testcase for active-back")
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 293d349e21fe..7ef639a9d4a6 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -297,7 +297,7 @@ do_transfer()
 	if [ "$test_link_fail" -eq 2 ];then
 		timeout ${timeout_test} \
 			ip netns exec ${listener_ns} \
-				$mptcp_connect -t ${timeout_poll} -l -p $port -s ${cl_proto} \
+				$mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
 					${local_addr} < "$sinfail" > "$sout" &
 	else
 		timeout ${timeout_test} \
-- 
cgit v1.2.3


From b6ab64b074f29b42ff272793806efc913f7cc742 Mon Sep 17 00:00:00 2001
From: Paolo Abeni <pabeni@redhat.com>
Date: Fri, 29 Oct 2021 16:55:59 -0700
Subject: selftests: mptcp: more stable simult_flows tests

Currently the simult_flows.sh self-tests are not very stable,
especially when running on slow VMs.

The tests measure runtime for transfers on multiple subflows
and check that the time is near the theoretical maximum.

The current test infra introduces a bit of jitter in test
runtime, due to multiple explicit delays. Additionally the
runtime is measured by the shell script wrapper. On a slow
VM, the script overhead is measurable and subject to relevant
jitter.

One solution to make the test more stable would be adding more
slack to the expected time; that could possibly hide real
regressions. Instead move the measurement inside the command
doing the transfer, and drop most unneeded sleeps.

Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/mptcp/mptcp_connect.c | 72 ++++++++++++++++++-----
 tools/testing/selftests/net/mptcp/simult_flows.sh | 36 +++++-------
 2 files changed, 72 insertions(+), 36 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.c b/tools/testing/selftests/net/mptcp/mptcp_connect.c
index 89c4753c2760..95e81d557b08 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.c
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.c
@@ -14,6 +14,7 @@
 #include <strings.h>
 #include <signal.h>
 #include <unistd.h>
+#include <time.h>
 
 #include <sys/poll.h>
 #include <sys/sendfile.h>
@@ -64,6 +65,7 @@ static int cfg_sndbuf;
 static int cfg_rcvbuf;
 static bool cfg_join;
 static bool cfg_remove;
+static unsigned int cfg_time;
 static unsigned int cfg_do_w;
 static int cfg_wait;
 static uint32_t cfg_mark;
@@ -78,9 +80,10 @@ static struct cfg_cmsg_types cfg_cmsg_types;
 static void die_usage(void)
 {
 	fprintf(stderr, "Usage: mptcp_connect [-6] [-u] [-s MPTCP|TCP] [-p port] [-m mode]"
-		"[-l] [-w sec] connect_address\n");
+		"[-l] [-w sec] [-t num] [-T num] connect_address\n");
 	fprintf(stderr, "\t-6 use ipv6\n");
 	fprintf(stderr, "\t-t num -- set poll timeout to num\n");
+	fprintf(stderr, "\t-T num -- set expected runtime to num ms\n");
 	fprintf(stderr, "\t-S num -- set SO_SNDBUF to num\n");
 	fprintf(stderr, "\t-R num -- set SO_RCVBUF to num\n");
 	fprintf(stderr, "\t-p num -- use port num\n");
@@ -448,7 +451,7 @@ static void set_nonblock(int fd)
 	fcntl(fd, F_SETFL, flags | O_NONBLOCK);
 }
 
-static int copyfd_io_poll(int infd, int peerfd, int outfd)
+static int copyfd_io_poll(int infd, int peerfd, int outfd, bool *in_closed_after_out)
 {
 	struct pollfd fds = {
 		.fd = peerfd,
@@ -487,9 +490,11 @@ static int copyfd_io_poll(int infd, int peerfd, int outfd)
 				 */
 				fds.events &= ~POLLIN;
 
-				if ((fds.events & POLLOUT) == 0)
+				if ((fds.events & POLLOUT) == 0) {
+					*in_closed_after_out = true;
 					/* and nothing more to send */
 					break;
+				}
 
 			/* Else, still have data to transmit */
 			} else if (len < 0) {
@@ -547,7 +552,7 @@ static int copyfd_io_poll(int infd, int peerfd, int outfd)
 	}
 
 	/* leave some time for late join/announce */
-	if (cfg_join || cfg_remove)
+	if (cfg_remove)
 		usleep(cfg_wait);
 
 	close(peerfd);
@@ -646,7 +651,7 @@ static int do_sendfile(int infd, int outfd, unsigned int count)
 }
 
 static int copyfd_io_mmap(int infd, int peerfd, int outfd,
-			  unsigned int size)
+			  unsigned int size, bool *in_closed_after_out)
 {
 	int err;
 
@@ -664,13 +669,14 @@ static int copyfd_io_mmap(int infd, int peerfd, int outfd,
 		shutdown(peerfd, SHUT_WR);
 
 		err = do_recvfile(peerfd, outfd);
+		*in_closed_after_out = true;
 	}
 
 	return err;
 }
 
 static int copyfd_io_sendfile(int infd, int peerfd, int outfd,
-			      unsigned int size)
+			      unsigned int size, bool *in_closed_after_out)
 {
 	int err;
 
@@ -685,6 +691,7 @@ static int copyfd_io_sendfile(int infd, int peerfd, int outfd,
 		if (err)
 			return err;
 		err = do_recvfile(peerfd, outfd);
+		*in_closed_after_out = true;
 	}
 
 	return err;
@@ -692,27 +699,62 @@ static int copyfd_io_sendfile(int infd, int peerfd, int outfd,
 
 static int copyfd_io(int infd, int peerfd, int outfd)
 {
+	bool in_closed_after_out = false;
+	struct timespec start, end;
 	int file_size;
+	int ret;
+
+	if (cfg_time && (clock_gettime(CLOCK_MONOTONIC, &start) < 0))
+		xerror("can not fetch start time %d", errno);
 
 	switch (cfg_mode) {
 	case CFG_MODE_POLL:
-		return copyfd_io_poll(infd, peerfd, outfd);
+		ret = copyfd_io_poll(infd, peerfd, outfd, &in_closed_after_out);
+		break;
+
 	case CFG_MODE_MMAP:
 		file_size = get_infd_size(infd);
 		if (file_size < 0)
 			return file_size;
-		return copyfd_io_mmap(infd, peerfd, outfd, file_size);
+		ret = copyfd_io_mmap(infd, peerfd, outfd, file_size, &in_closed_after_out);
+		break;
+
 	case CFG_MODE_SENDFILE:
 		file_size = get_infd_size(infd);
 		if (file_size < 0)
 			return file_size;
-		return copyfd_io_sendfile(infd, peerfd, outfd, file_size);
+		ret = copyfd_io_sendfile(infd, peerfd, outfd, file_size, &in_closed_after_out);
+		break;
+
+	default:
+		fprintf(stderr, "Invalid mode %d\n", cfg_mode);
+
+		die_usage();
+		return 1;
 	}
 
-	fprintf(stderr, "Invalid mode %d\n", cfg_mode);
+	if (ret)
+		return ret;
 
-	die_usage();
-	return 1;
+	if (cfg_time) {
+		unsigned int delta_ms;
+
+		if (clock_gettime(CLOCK_MONOTONIC, &end) < 0)
+			xerror("can not fetch end time %d", errno);
+		delta_ms = (end.tv_sec - start.tv_sec) * 1000 + (end.tv_nsec - start.tv_nsec) / 1000000;
+		if (delta_ms > cfg_time) {
+			xerror("transfer slower than expected! runtime %d ms, expected %d ms",
+			       delta_ms, cfg_time);
+		}
+
+		/* show the runtime only if this end shutdown(wr) before receiving the EOF,
+		 * (that is, if this end got the longer runtime)
+		 */
+		if (in_closed_after_out)
+			fprintf(stderr, "%d", delta_ms);
+	}
+
+	return 0;
 }
 
 static void check_sockaddr(int pf, struct sockaddr_storage *ss,
@@ -1005,12 +1047,11 @@ static void parse_opts(int argc, char **argv)
 {
 	int c;
 
-	while ((c = getopt(argc, argv, "6jr:lp:s:hut:m:S:R:w:M:P:c:")) != -1) {
+	while ((c = getopt(argc, argv, "6jr:lp:s:hut:T:m:S:R:w:M:P:c:")) != -1) {
 		switch (c) {
 		case 'j':
 			cfg_join = true;
 			cfg_mode = CFG_MODE_POLL;
-			cfg_wait = 400000;
 			break;
 		case 'r':
 			cfg_remove = true;
@@ -1043,6 +1084,9 @@ static void parse_opts(int argc, char **argv)
 			if (poll_timeout <= 0)
 				poll_timeout = -1;
 			break;
+		case 'T':
+			cfg_time = atoi(optarg);
+			break;
 		case 'm':
 			cfg_mode = parse_mode(optarg);
 			break;
diff --git a/tools/testing/selftests/net/mptcp/simult_flows.sh b/tools/testing/selftests/net/mptcp/simult_flows.sh
index 910d8126af8f..f441ff7904fc 100755
--- a/tools/testing/selftests/net/mptcp/simult_flows.sh
+++ b/tools/testing/selftests/net/mptcp/simult_flows.sh
@@ -51,7 +51,7 @@ setup()
 	sout=$(mktemp)
 	cout=$(mktemp)
 	capout=$(mktemp)
-	size=$((2048 * 4096))
+	size=$((2 * 2048 * 4096))
 	dd if=/dev/zero of=$small bs=4096 count=20 >/dev/null 2>&1
 	dd if=/dev/zero of=$large bs=4096 count=$((size / 4096)) >/dev/null 2>&1
 
@@ -161,17 +161,15 @@ do_transfer()
 
 	timeout ${timeout_test} \
 		ip netns exec ${ns3} \
-			./mptcp_connect -jt ${timeout_poll} -l -p $port \
+			./mptcp_connect -jt ${timeout_poll} -l -p $port -T $time \
 				0.0.0.0 < "$sin" > "$sout" &
 	local spid=$!
 
 	wait_local_port_listen "${ns3}" "${port}"
 
-	local start
-	start=$(date +%s%3N)
 	timeout ${timeout_test} \
 		ip netns exec ${ns1} \
-			./mptcp_connect -jt ${timeout_poll} -p $port \
+			./mptcp_connect -jt ${timeout_poll} -p $port -T $time \
 				10.0.3.3 < "$cin" > "$cout" &
 	local cpid=$!
 
@@ -180,27 +178,20 @@ do_transfer()
 	wait $spid
 	local rets=$?
 
-	local stop
-	stop=$(date +%s%3N)
-
 	if $capture; then
 		sleep 1
 		kill ${cappid_listener}
 		kill ${cappid_connector}
 	fi
 
-	local duration
-	duration=$((stop-start))
-
 	cmp $sin $cout > /dev/null 2>&1
 	local cmps=$?
 	cmp $cin $sout > /dev/null 2>&1
 	local cmpc=$?
 
-	printf "%16s" "$duration max $max_time "
+	printf "%-16s" " max $max_time "
 	if [ $retc -eq 0 ] && [ $rets -eq 0 ] && \
-	   [ $cmpc -eq 0 ] && [ $cmps -eq 0 ] && \
-	   [ $duration -lt $max_time ]; then
+	   [ $cmpc -eq 0 ] && [ $cmps -eq 0 ]; then
 		echo "[ OK ]"
 		cat "$capout"
 		return 0
@@ -244,23 +235,24 @@ run_test()
 	tc -n $ns2 qdisc add dev ns2eth1 root netem rate ${rate1}mbit $delay1
 	tc -n $ns2 qdisc add dev ns2eth2 root netem rate ${rate2}mbit $delay2
 
-	# time is measure in ms
-	local time=$((size * 8 * 1000 / (( $rate1 + $rate2) * 1024 *1024) ))
+	# time is measured in ms, account for transfer size, affegated link speed
+	# and header overhead (10%)
+	local time=$((size * 8 * 1000 * 10 / (( $rate1 + $rate2) * 1024 *1024 * 9) ))
 
 	# mptcp_connect will do some sleeps to allow the mp_join handshake
-	# completion
-	time=$((time + 1350))
+	# completion (see mptcp_connect): 200ms on each side, add some slack
+	time=$((time + 450))
 
-	printf "%-50s" "$msg"
-	do_transfer $small $large $((time * 11 / 10))
+	printf "%-60s" "$msg"
+	do_transfer $small $large $time
 	lret=$?
 	if [ $lret -ne 0 ]; then
 		ret=$lret
 		[ $bail -eq 0 ] || exit $ret
 	fi
 
-	printf "%-50s" "$msg - reverse direction"
-	do_transfer $large $small $((time * 11 / 10))
+	printf "%-60s" "$msg - reverse direction"
+	do_transfer $large $small $time
 	lret=$?
 	if [ $lret -ne 0 ]; then
 		ret=$lret
-- 
cgit v1.2.3


From c08e8baea78e472383d6b295bb8db2132068c358 Mon Sep 17 00:00:00 2001
From: Taehee Yoo <ap420073@gmail.com>
Date: Sun, 31 Oct 2021 16:00:06 +0000
Subject: selftests: add amt interface selftest script

This is selftest script for amt interface.
This script includes basic forwarding scenarion and torture scenario.

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 tools/testing/selftests/net/Makefile |   1 +
 tools/testing/selftests/net/amt.sh   | 284 +++++++++++++++++++++++++++++++++++
 tools/testing/selftests/net/config   |   1 +
 3 files changed, 286 insertions(+)
 create mode 100644 tools/testing/selftests/net/amt.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 492b273743b4..d27c98a32244 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -22,6 +22,7 @@ TEST_PROGS += devlink_port_split.py
 TEST_PROGS += drop_monitor_tests.sh
 TEST_PROGS += vrf_route_leaking.sh
 TEST_PROGS += bareudp.sh
+TEST_PROGS += amt.sh
 TEST_PROGS += unicast_extensions.sh
 TEST_PROGS += udpgro_fwd.sh
 TEST_PROGS += veth.sh
diff --git a/tools/testing/selftests/net/amt.sh b/tools/testing/selftests/net/amt.sh
new file mode 100644
index 000000000000..75528788cb95
--- /dev/null
+++ b/tools/testing/selftests/net/amt.sh
@@ -0,0 +1,284 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+# Author: Taehee Yoo <ap420073@gmail.com>
+#
+# This script evaluates the AMT driver.
+# There are four network-namespaces, LISTENER, SOURCE, GATEWAY, RELAY.
+# The role of LISTENER is to listen multicast traffic.
+# In order to do that, it send IGMP group join message.
+# The role of SOURCE is to send multicast traffic to listener.
+# The role of GATEWAY is to work Gateway role of AMT interface.
+# The role of RELAY is to work Relay role of AMT interface.
+#
+#
+#       +------------------------+
+#       |    LISTENER netns      |
+#       |                        |
+#       |  +------------------+  |
+#       |  |       l_gw       |  |
+#       |  |  192.168.0.2/24  |  |
+#       |  |  2001:db8::2/64  |  |
+#       |  +------------------+  |
+#       |            .           |
+#       +------------------------+
+#                    .
+#                    .
+#       +-----------------------------------------------------+
+#       |            .         GATEWAY netns                  |
+#       |            .                                        |
+#       |+---------------------------------------------------+|
+#       ||           .          br0                          ||
+#       || +------------------+       +------------------+   ||
+#       || |       gw_l       |       |       amtg       |   ||
+#       || |  192.168.0.1/24  |       +--------+---------+   ||
+#       || |  2001:db8::1/64  |                |             ||
+#       || +------------------+                |             ||
+#       |+-------------------------------------|-------------+|
+#       |                                      |              |
+#       |                             +--------+---------+    |
+#       |                             |     gw_relay     |    |
+#       |                             |    10.0.0.1/24   |    |
+#       |                             +------------------+    |
+#       |                                      .              |
+#       +-----------------------------------------------------+
+#                                              .
+#                                              .
+#       +-----------------------------------------------------+
+#       |                       RELAY netns    .              |
+#       |                             +------------------+    |
+#       |                             |     relay_gw     |    |
+#       |                             |    10.0.0.2/24   |    |
+#       |                             +--------+---------+    |
+#       |                                      |              |
+#       |                                      |              |
+#       |  +------------------+       +--------+---------+    |
+#       |  |     relay_src    |       |       amtr       |    |
+#       |  |   172.17.0.1/24  |       +------------------+    |
+#       |  | 2001:db8:3::1/64 |                               |
+#       |  +------------------+                               |
+#       |            .                                        |
+#       |            .                                        |
+#       +-----------------------------------------------------+
+#                    .
+#                    .
+#       +------------------------+
+#       |            .           |
+#       |  +------------------+  |
+#       |  |     src_relay    |  |
+#       |  |   172.17.0.2/24  |  |
+#       |  | 2001:db8:3::2/64 |  |
+#       |  +------------------+  |
+#       |      SOURCE netns      |
+#       +------------------------+
+#==============================================================================
+
+readonly LISTENER=$(mktemp -u listener-XXXXXXXX)
+readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX)
+readonly RELAY=$(mktemp -u relay-XXXXXXXX)
+readonly SOURCE=$(mktemp -u source-XXXXXXXX)
+ERR=4
+err=0
+
+exit_cleanup()
+{
+	for ns in "$@"; do
+		ip netns delete "${ns}" 2>/dev/null || true
+	done
+
+	exit $ERR
+}
+
+create_namespaces()
+{
+	ip netns add "${LISTENER}" || exit_cleanup
+	ip netns add "${GATEWAY}" || exit_cleanup "${LISTENER}"
+	ip netns add "${RELAY}" || exit_cleanup "${LISTENER}" "${GATEWAY}"
+	ip netns add "${SOURCE}" || exit_cleanup "${LISTENER}" "${GATEWAY}" \
+		"${RELAY}"
+}
+
+# The trap function handler
+#
+exit_cleanup_all()
+{
+	exit_cleanup "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"
+}
+
+setup_interface()
+{
+	for ns in "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"; do
+		ip -netns "${ns}" link set dev lo up
+	done;
+
+	ip link add l_gw type veth peer name gw_l
+	ip link add gw_relay type veth peer name relay_gw
+	ip link add relay_src type veth peer name src_relay
+
+	ip link set l_gw netns "${LISTENER}" up
+	ip link set gw_l netns "${GATEWAY}" up
+	ip link set gw_relay netns "${GATEWAY}" up
+	ip link set relay_gw netns "${RELAY}" up
+	ip link set relay_src netns "${RELAY}" up
+	ip link set src_relay netns "${SOURCE}" up mtu 1400
+
+	ip netns exec "${LISTENER}" ip a a 192.168.0.2/24 dev l_gw
+	ip netns exec "${LISTENER}" ip r a default via 192.168.0.1 dev l_gw
+	ip netns exec "${LISTENER}" ip a a 2001:db8::2/64 dev l_gw
+	ip netns exec "${LISTENER}" ip r a default via 2001:db8::1 dev l_gw
+	ip netns exec "${LISTENER}" ip a a 239.0.0.1/32 dev l_gw autojoin
+	ip netns exec "${LISTENER}" ip a a ff0e::5:6/128 dev l_gw autojoin
+
+	ip netns exec "${GATEWAY}" ip a a 192.168.0.1/24 dev gw_l
+	ip netns exec "${GATEWAY}" ip a a 2001:db8::1/64 dev gw_l
+	ip netns exec "${GATEWAY}" ip a a 10.0.0.1/24 dev gw_relay
+	ip netns exec "${GATEWAY}" ip link add br0 type bridge
+	ip netns exec "${GATEWAY}" ip link set br0 up
+	ip netns exec "${GATEWAY}" ip link set gw_l master br0
+	ip netns exec "${GATEWAY}" ip link set gw_l up
+	ip netns exec "${GATEWAY}" ip link add amtg master br0 type amt \
+		mode gateway local 10.0.0.1 discovery 10.0.0.2 dev gw_relay \
+		gateway_port 2268 relay_port 2268
+	ip netns exec "${RELAY}" ip a a 10.0.0.2/24 dev relay_gw
+	ip netns exec "${RELAY}" ip link add amtr type amt mode relay \
+		local 10.0.0.2 dev relay_gw relay_port 2268 max_tunnels 4
+	ip netns exec "${RELAY}" ip a a 172.17.0.1/24 dev relay_src
+	ip netns exec "${RELAY}" ip a a 2001:db8:3::1/64 dev relay_src
+	ip netns exec "${SOURCE}" ip a a 172.17.0.2/24 dev src_relay
+	ip netns exec "${SOURCE}" ip a a 2001:db8:3::2/64 dev src_relay
+	ip netns exec "${SOURCE}" ip r a default via 172.17.0.1 dev src_relay
+	ip netns exec "${SOURCE}" ip r a default via 2001:db8:3::1 dev src_relay
+	ip netns exec "${RELAY}" ip link set amtr up
+	ip netns exec "${GATEWAY}" ip link set amtg up
+}
+
+setup_sysctl()
+{
+	ip netns exec "${RELAY}" sysctl net.ipv4.ip_forward=1 -w -q
+}
+
+setup_iptables()
+{
+	ip netns exec "${RELAY}" iptables -t mangle -I PREROUTING \
+		-d 239.0.0.1 -j TTL --ttl-set 2
+	ip netns exec "${RELAY}" ip6tables -t mangle -I PREROUTING \
+		-j HL --hl-set 2
+}
+
+setup_mcast_routing()
+{
+	ip netns exec "${RELAY}" smcrouted
+	ip netns exec "${RELAY}" smcroutectl a relay_src \
+		172.17.0.2 239.0.0.1 amtr
+	ip netns exec "${RELAY}" smcroutectl a relay_src \
+		2001:db8:3::2 ff0e::5:6 amtr
+}
+
+test_remote_ip()
+{
+	REMOTE=$(ip netns exec "${GATEWAY}" \
+		ip -d -j link show amtg | jq .[0].linkinfo.info_data.remote)
+	if [ $REMOTE == "\"10.0.0.2\"" ]; then
+		printf "TEST: %-60s  [ OK ]\n" "amt discovery"
+	else
+		printf "TEST: %-60s  [FAIL]\n" "amt discovery"
+		ERR=1
+	fi
+}
+
+send_mcast_torture4()
+{
+	ip netns exec "${SOURCE}" bash -c \
+		'cat /dev/urandom | head -c 1G | nc -w 1 -u 239.0.0.1 4001'
+}
+
+
+send_mcast_torture6()
+{
+	ip netns exec "${SOURCE}" bash -c \
+		'cat /dev/urandom | head -c 1G | nc -w 1 -u ff0e::5:6 6001'
+}
+
+check_features()
+{
+        ip link help 2>&1 | grep -q amt
+        if [ $? -ne 0 ]; then
+                echo "Missing amt support in iproute2" >&2
+                exit_cleanup
+        fi
+}
+
+test_ipv4_forward()
+{
+	RESULT4=$(ip netns exec "${LISTENER}" nc -w 1 -l -u 239.0.0.1 4000)
+	if [ "$RESULT4" == "172.17.0.2" ]; then
+		printf "TEST: %-60s  [ OK ]\n" "IPv4 amt multicast forwarding"
+		exit 0
+	else
+		printf "TEST: %-60s  [FAIL]\n" "IPv4 amt multicast forwarding"
+		exit 1
+	fi
+}
+
+test_ipv6_forward()
+{
+	RESULT6=$(ip netns exec "${LISTENER}" nc -w 1 -l -u ff0e::5:6 6000)
+	if [ "$RESULT6" == "2001:db8:3::2" ]; then
+		printf "TEST: %-60s  [ OK ]\n" "IPv6 amt multicast forwarding"
+		exit 0
+	else
+		printf "TEST: %-60s  [FAIL]\n" "IPv6 amt multicast forwarding"
+		exit 1
+	fi
+}
+
+send_mcast4()
+{
+	sleep 2
+	ip netns exec "${SOURCE}" bash -c \
+		'echo 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' &
+}
+
+send_mcast6()
+{
+	sleep 2
+	ip netns exec "${SOURCE}" bash -c \
+		'echo 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' &
+}
+
+check_features
+
+create_namespaces
+
+set -e
+trap exit_cleanup_all EXIT
+
+setup_interface
+setup_sysctl
+setup_iptables
+setup_mcast_routing
+test_remote_ip
+test_ipv4_forward &
+pid=$!
+send_mcast4
+wait $pid || err=$?
+if [ $err -eq 1 ]; then
+	ERR=1
+fi
+test_ipv6_forward &
+pid=$!
+send_mcast6
+wait $pid || err=$?
+if [ $err -eq 1 ]; then
+	ERR=1
+fi
+send_mcast_torture4
+printf "TEST: %-60s  [ OK ]\n" "IPv4 amt traffic forwarding torture"
+send_mcast_torture6
+printf "TEST: %-60s  [ OK ]\n" "IPv6 amt traffic forwarding torture"
+sleep 5
+if [ "${ERR}" -eq 1 ]; then
+        echo "Some tests failed." >&2
+else
+        ERR=0
+fi
diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config
index 86ab429fe7f3..ead7963b9bf0 100644
--- a/tools/testing/selftests/net/config
+++ b/tools/testing/selftests/net/config
@@ -44,3 +44,4 @@ CONFIG_NET_ACT_MIRRED=m
 CONFIG_BAREUDP=m
 CONFIG_IPV6_IOAM6_LWTUNNEL=y
 CONFIG_CRYPTO_SM4=y
+CONFIG_AMT=m
-- 
cgit v1.2.3


From 0133c20480b14820d43c37c0e9502da4bffcad3a Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Fri, 29 Oct 2021 11:29:07 -0700
Subject: selftests/bpf: Fix strobemeta selftest regression

After most recent nightly Clang update strobemeta selftests started
failing with the following error (relevant portion of assembly included):

  1624: (85) call bpf_probe_read_user_str#114
  1625: (bf) r1 = r0
  1626: (18) r2 = 0xfffffffe
  1628: (5f) r1 &= r2
  1629: (55) if r1 != 0x0 goto pc+7
  1630: (07) r9 += 104
  1631: (6b) *(u16 *)(r9 +0) = r0
  1632: (67) r0 <<= 32
  1633: (77) r0 >>= 32
  1634: (79) r1 = *(u64 *)(r10 -456)
  1635: (0f) r1 += r0
  1636: (7b) *(u64 *)(r10 -456) = r1
  1637: (79) r1 = *(u64 *)(r10 -368)
  1638: (c5) if r1 s< 0x1 goto pc+778
  1639: (bf) r6 = r8
  1640: (0f) r6 += r7
  1641: (b4) w1 = 0
  1642: (6b) *(u16 *)(r6 +108) = r1
  1643: (79) r3 = *(u64 *)(r10 -352)
  1644: (79) r9 = *(u64 *)(r10 -456)
  1645: (bf) r1 = r9
  1646: (b4) w2 = 1
  1647: (85) call bpf_probe_read_user_str#114

  R1 unbounded memory access, make sure to bounds check any such access

In the above code r0 and r1 are implicitly related. Clang knows that,
but verifier isn't able to infer this relationship.

Yonghong Song narrowed down this "regression" in code generation to
a recent Clang optimization change ([0]), which for BPF target generates
code pattern that BPF verifier can't handle and loses track of register
boundaries.

This patch works around the issue by adding an BPF assembly-based helper
that helps to prove to the verifier that upper bound of the register is
a given constant by controlling the exact share of generated BPF
instruction sequence. This fixes the immediate issue for strobemeta
selftest.

  [0] https://github.com/llvm/llvm-project/commit/acabad9ff6bf13e00305d9d8621ee8eafc1f8b08

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211029182907.166910-1-andrii@kernel.org
---
 tools/testing/selftests/bpf/progs/strobemeta.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/strobemeta.h b/tools/testing/selftests/bpf/progs/strobemeta.h
index 7de534f38c3f..3687ea755ab5 100644
--- a/tools/testing/selftests/bpf/progs/strobemeta.h
+++ b/tools/testing/selftests/bpf/progs/strobemeta.h
@@ -10,6 +10,14 @@
 #include <linux/types.h>
 #include <bpf/bpf_helpers.h>
 
+#define bpf_clamp_umax(VAR, UMAX)					\
+	asm volatile (							\
+		"if %0 <= %[max] goto +1\n"				\
+		"%0 = %[max]\n"						\
+		: "+r"(VAR)						\
+		: [max]"i"(UMAX)					\
+	)
+
 typedef uint32_t pid_t;
 struct task_struct {};
 
@@ -413,6 +421,7 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 
 	len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN, map.tag);
 	if (len <= STROBE_MAX_STR_LEN) {
+		bpf_clamp_umax(len, STROBE_MAX_STR_LEN);
 		descr->tag_len = len;
 		payload += len;
 	}
@@ -430,6 +439,7 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 		len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN,
 					      map.entries[i].key);
 		if (len <= STROBE_MAX_STR_LEN) {
+			bpf_clamp_umax(len, STROBE_MAX_STR_LEN);
 			descr->key_lens[i] = len;
 			payload += len;
 		}
@@ -437,6 +447,7 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 		len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN,
 					      map.entries[i].val);
 		if (len <= STROBE_MAX_STR_LEN) {
+			bpf_clamp_umax(len, STROBE_MAX_STR_LEN);
 			descr->val_lens[i] = len;
 			payload += len;
 		}
-- 
cgit v1.2.3


From b556c3fd467628341cc7680e4271790cafd79dc4 Mon Sep 17 00:00:00 2001
From: Liu Jian <liujian56@huawei.com>
Date: Fri, 29 Oct 2021 22:12:15 +0800
Subject: selftests, bpf: Fix test_txmsg_ingress_parser error

After "skmsg: lose offset info in sk_psock_skb_ingress", the test case
with ktls failed. This because ktls parser(tls_read_size) return value
is 285 not 256.

The case like this:

	tls_sk1 --> redir_sk --> tls_sk2

tls_sk1 sent out 512 bytes data, after tls related processing redir_sk
recved 570 btyes data, and redirect 512 (skb_use_parser) bytes data to
tls_sk2; but tls_sk2 needs 285 * 2 bytes data, receive timeout occurred.

Signed-off-by: Liu Jian <liujian56@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20211029141216.211899-2-liujian56@huawei.com
---
 tools/testing/selftests/bpf/test_sockmap.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c
index eefd445b96fc..06924917ad77 100644
--- a/tools/testing/selftests/bpf/test_sockmap.c
+++ b/tools/testing/selftests/bpf/test_sockmap.c
@@ -1680,6 +1680,8 @@ static void test_txmsg_ingress_parser(int cgrp, struct sockmap_options *opt)
 {
 	txmsg_pass = 1;
 	skb_use_parser = 512;
+	if (ktls == 1)
+		skb_use_parser = 570;
 	opt->iov_length = 256;
 	opt->iov_count = 1;
 	opt->rate = 2;
-- 
cgit v1.2.3


From d69672147faa2a7671c0779fa5b9ad99e4fca4e3 Mon Sep 17 00:00:00 2001
From: Liu Jian <liujian56@huawei.com>
Date: Fri, 29 Oct 2021 22:12:16 +0800
Subject: selftests, bpf: Add one test for sockmap with strparser

Add the test to check sockmap with strparser is working well.

Signed-off-by: Liu Jian <liujian56@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20211029141216.211899-3-liujian56@huawei.com
---
 tools/testing/selftests/bpf/test_sockmap.c | 33 +++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c
index 06924917ad77..1ba7e7346afb 100644
--- a/tools/testing/selftests/bpf/test_sockmap.c
+++ b/tools/testing/selftests/bpf/test_sockmap.c
@@ -139,6 +139,7 @@ struct sockmap_options {
 	bool sendpage;
 	bool data_test;
 	bool drop_expected;
+	bool check_recved_len;
 	int iov_count;
 	int iov_length;
 	int rate;
@@ -556,8 +557,12 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt,
 	int err, i, flags = MSG_NOSIGNAL;
 	bool drop = opt->drop_expected;
 	bool data = opt->data_test;
+	int iov_alloc_length = iov_length;
 
-	err = msg_alloc_iov(&msg, iov_count, iov_length, data, tx);
+	if (!tx && opt->check_recved_len)
+		iov_alloc_length *= 2;
+
+	err = msg_alloc_iov(&msg, iov_count, iov_alloc_length, data, tx);
 	if (err)
 		goto out_errno;
 	if (peek_flag) {
@@ -665,6 +670,13 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt,
 
 			s->bytes_recvd += recv;
 
+			if (opt->check_recved_len && s->bytes_recvd > total_bytes) {
+				errno = EMSGSIZE;
+				fprintf(stderr, "recv failed(), bytes_recvd:%zd, total_bytes:%f\n",
+						s->bytes_recvd, total_bytes);
+				goto out_errno;
+			}
+
 			if (data) {
 				int chunk_sz = opt->sendpage ?
 						iov_length * cnt :
@@ -744,7 +756,8 @@ static int sendmsg_test(struct sockmap_options *opt)
 
 	rxpid = fork();
 	if (rxpid == 0) {
-		iov_buf -= (txmsg_pop - txmsg_start_pop + 1);
+		if (txmsg_pop || txmsg_start_pop)
+			iov_buf -= (txmsg_pop - txmsg_start_pop + 1);
 		if (opt->drop_expected || txmsg_ktls_skb_drop)
 			_exit(0);
 
@@ -1688,6 +1701,19 @@ static void test_txmsg_ingress_parser(int cgrp, struct sockmap_options *opt)
 	test_exec(cgrp, opt);
 }
 
+static void test_txmsg_ingress_parser2(int cgrp, struct sockmap_options *opt)
+{
+	if (ktls == 1)
+		return;
+	skb_use_parser = 10;
+	opt->iov_length = 20;
+	opt->iov_count = 1;
+	opt->rate = 1;
+	opt->check_recved_len = true;
+	test_exec(cgrp, opt);
+	opt->check_recved_len = false;
+}
+
 char *map_names[] = {
 	"sock_map",
 	"sock_map_txmsg",
@@ -1786,7 +1812,8 @@ struct _test test[] = {
 	{"txmsg test pull-data", test_txmsg_pull},
 	{"txmsg test pop-data", test_txmsg_pop},
 	{"txmsg test push/pop data", test_txmsg_push_pop},
-	{"txmsg text ingress parser", test_txmsg_ingress_parser},
+	{"txmsg test ingress parser", test_txmsg_ingress_parser},
+	{"txmsg test ingress parser2", test_txmsg_ingress_parser2},
 };
 
 static int check_whitelist(struct _test *t, struct sockmap_options *opt)
-- 
cgit v1.2.3


From 36e70b9b06bf14a0fac87315f0e73d6e17e80aad Mon Sep 17 00:00:00 2001
From: Björn Töpel <bjorn@kernel.org>
Date: Thu, 28 Oct 2021 18:10:57 +0200
Subject: selftests, bpf: Fix broken riscv build
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This patch is closely related to commit 6016df8fe874 ("selftests/bpf:
Fix broken riscv build"). When clang includes the system include
directories, but targeting BPF program, __BITS_PER_LONG defaults to
32, unless explicitly set. Work around this problem, by explicitly
setting __BITS_PER_LONG to __riscv_xlen.

Signed-off-by: Björn Töpel <bjorn@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211028161057.520552-5-bjorn@kernel.org
---
 tools/testing/selftests/bpf/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index f49cb5fc85af..54b0a41a3775 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -277,7 +277,7 @@ $(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids	\
 define get_sys_includes
 $(shell $(1) -v -E - </dev/null 2>&1 \
 	| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
-$(shell $(1) -dM -E - </dev/null | grep '#define __riscv_xlen ' | sed 's/#define /-D/' | sed 's/ /=/')
+$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
 endef
 
 # Determine target endianness.
-- 
cgit v1.2.3


From 31122b2f768bde5281037141bb658f117bea102e Mon Sep 17 00:00:00 2001
From: Hou Tao <houtao1@huawei.com>
Date: Mon, 25 Oct 2021 14:40:25 +0800
Subject: selftests/bpf: Add test cases for struct_ops prog

Running a BPF_PROG_TYPE_STRUCT_OPS prog for dummy_st_ops::test_N()
through bpf_prog_test_run(). Four test cases are added:
(1) attach dummy_st_ops should fail
(2) function return value of bpf_dummy_ops::test_1() is expected
(3) pointer argument of bpf_dummy_ops::test_1() works as expected
(4) multiple arguments passed to bpf_dummy_ops::test_2() are correct

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20211025064025.2567443-5-houtao1@huawei.com
---
 .../selftests/bpf/prog_tests/dummy_st_ops.c        | 115 +++++++++++++++++++++
 tools/testing/selftests/bpf/progs/dummy_st_ops.c   |  50 +++++++++
 2 files changed, 165 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/dummy_st_ops.c
 create mode 100644 tools/testing/selftests/bpf/progs/dummy_st_ops.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/dummy_st_ops.c b/tools/testing/selftests/bpf/prog_tests/dummy_st_ops.c
new file mode 100644
index 000000000000..cbaa44ffb8c6
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/dummy_st_ops.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2021. Huawei Technologies Co., Ltd */
+#include <test_progs.h>
+#include "dummy_st_ops.skel.h"
+
+/* Need to keep consistent with definition in include/linux/bpf.h */
+struct bpf_dummy_ops_state {
+	int val;
+};
+
+static void test_dummy_st_ops_attach(void)
+{
+	struct dummy_st_ops *skel;
+	struct bpf_link *link;
+
+	skel = dummy_st_ops__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
+		return;
+
+	link = bpf_map__attach_struct_ops(skel->maps.dummy_1);
+	ASSERT_EQ(libbpf_get_error(link), -EOPNOTSUPP, "dummy_st_ops_attach");
+
+	dummy_st_ops__destroy(skel);
+}
+
+static void test_dummy_init_ret_value(void)
+{
+	__u64 args[1] = {0};
+	struct bpf_prog_test_run_attr attr = {
+		.ctx_size_in = sizeof(args),
+		.ctx_in = args,
+	};
+	struct dummy_st_ops *skel;
+	int fd, err;
+
+	skel = dummy_st_ops__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
+		return;
+
+	fd = bpf_program__fd(skel->progs.test_1);
+	attr.prog_fd = fd;
+	err = bpf_prog_test_run_xattr(&attr);
+	ASSERT_OK(err, "test_run");
+	ASSERT_EQ(attr.retval, 0xf2f3f4f5, "test_ret");
+
+	dummy_st_ops__destroy(skel);
+}
+
+static void test_dummy_init_ptr_arg(void)
+{
+	int exp_retval = 0xbeef;
+	struct bpf_dummy_ops_state in_state = {
+		.val = exp_retval,
+	};
+	__u64 args[1] = {(unsigned long)&in_state};
+	struct bpf_prog_test_run_attr attr = {
+		.ctx_size_in = sizeof(args),
+		.ctx_in = args,
+	};
+	struct dummy_st_ops *skel;
+	int fd, err;
+
+	skel = dummy_st_ops__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
+		return;
+
+	fd = bpf_program__fd(skel->progs.test_1);
+	attr.prog_fd = fd;
+	err = bpf_prog_test_run_xattr(&attr);
+	ASSERT_OK(err, "test_run");
+	ASSERT_EQ(in_state.val, 0x5a, "test_ptr_ret");
+	ASSERT_EQ(attr.retval, exp_retval, "test_ret");
+
+	dummy_st_ops__destroy(skel);
+}
+
+static void test_dummy_multiple_args(void)
+{
+	__u64 args[5] = {0, -100, 0x8a5f, 'c', 0x1234567887654321ULL};
+	struct bpf_prog_test_run_attr attr = {
+		.ctx_size_in = sizeof(args),
+		.ctx_in = args,
+	};
+	struct dummy_st_ops *skel;
+	int fd, err;
+	size_t i;
+	char name[8];
+
+	skel = dummy_st_ops__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "dummy_st_ops_load"))
+		return;
+
+	fd = bpf_program__fd(skel->progs.test_2);
+	attr.prog_fd = fd;
+	err = bpf_prog_test_run_xattr(&attr);
+	ASSERT_OK(err, "test_run");
+	for (i = 0; i < ARRAY_SIZE(args); i++) {
+		snprintf(name, sizeof(name), "arg %zu", i);
+		ASSERT_EQ(skel->bss->test_2_args[i], args[i], name);
+	}
+
+	dummy_st_ops__destroy(skel);
+}
+
+void test_dummy_st_ops(void)
+{
+	if (test__start_subtest("dummy_st_ops_attach"))
+		test_dummy_st_ops_attach();
+	if (test__start_subtest("dummy_init_ret_value"))
+		test_dummy_init_ret_value();
+	if (test__start_subtest("dummy_init_ptr_arg"))
+		test_dummy_init_ptr_arg();
+	if (test__start_subtest("dummy_multiple_args"))
+		test_dummy_multiple_args();
+}
diff --git a/tools/testing/selftests/bpf/progs/dummy_st_ops.c b/tools/testing/selftests/bpf/progs/dummy_st_ops.c
new file mode 100644
index 000000000000..ead87edb75e2
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/dummy_st_ops.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2021. Huawei Technologies Co., Ltd */
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+struct bpf_dummy_ops_state {
+	int val;
+} __attribute__((preserve_access_index));
+
+struct bpf_dummy_ops {
+	int (*test_1)(struct bpf_dummy_ops_state *state);
+	int (*test_2)(struct bpf_dummy_ops_state *state, int a1, unsigned short a2,
+		      char a3, unsigned long a4);
+};
+
+char _license[] SEC("license") = "GPL";
+
+SEC("struct_ops/test_1")
+int BPF_PROG(test_1, struct bpf_dummy_ops_state *state)
+{
+	int ret;
+
+	if (!state)
+		return 0xf2f3f4f5;
+
+	ret = state->val;
+	state->val = 0x5a;
+	return ret;
+}
+
+__u64 test_2_args[5];
+
+SEC("struct_ops/test_2")
+int BPF_PROG(test_2, struct bpf_dummy_ops_state *state, int a1, unsigned short a2,
+	     char a3, unsigned long a4)
+{
+	test_2_args[0] = (unsigned long)state;
+	test_2_args[1] = a1;
+	test_2_args[2] = a2;
+	test_2_args[3] = a3;
+	test_2_args[4] = a4;
+	return 0;
+}
+
+SEC(".struct_ops")
+struct bpf_dummy_ops dummy_1 = {
+	.test_1 = (void *)test_1,
+	.test_2 = (void *)test_2,
+};
-- 
cgit v1.2.3


From 7a67087250f0003acc1b9e20eda01635e1e51f9a Mon Sep 17 00:00:00 2001
From: Joanne Koong <joannekoong@fb.com>
Date: Fri, 29 Oct 2021 15:49:09 -0700
Subject: selftests/bpf: Add bloom map success test for userspace calls

This patch has two changes:
1) Adds a new function "test_success_cases" to test
successfully creating + adding + looking up a value
in a bloom filter map from the userspace side.

2) Use bpf_create_map instead of bpf_create_map_xattr in
the "test_fail_cases" and test_inner_map to make the
code look cleaner.

Signed-off-by: Joanne Koong <joannekoong@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211029224909.1721024-4-joannekoong@fb.com
---
 .../selftests/bpf/prog_tests/bloom_filter_map.c    | 59 ++++++++++++----------
 1 file changed, 33 insertions(+), 26 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c b/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
index 9aa3fbed918b..be73e3de6668 100644
--- a/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
+++ b/tools/testing/selftests/bpf/prog_tests/bloom_filter_map.c
@@ -7,44 +7,31 @@
 
 static void test_fail_cases(void)
 {
-	struct bpf_create_map_attr xattr = {
-		.name = "bloom_filter_map",
-		.map_type = BPF_MAP_TYPE_BLOOM_FILTER,
-		.max_entries = 100,
-		.value_size = 11,
-	};
 	__u32 value;
 	int fd, err;
 
 	/* Invalid key size */
-	xattr.key_size = 4;
-	fd = bpf_create_map_xattr(&xattr);
+	fd = bpf_create_map(BPF_MAP_TYPE_BLOOM_FILTER, 4, sizeof(value), 100, 0);
 	if (!ASSERT_LT(fd, 0, "bpf_create_map bloom filter invalid key size"))
 		close(fd);
-	xattr.key_size = 0;
 
 	/* Invalid value size */
-	xattr.value_size = 0;
-	fd = bpf_create_map_xattr(&xattr);
+	fd = bpf_create_map(BPF_MAP_TYPE_BLOOM_FILTER, 0, 0, 100, 0);
 	if (!ASSERT_LT(fd, 0, "bpf_create_map bloom filter invalid value size 0"))
 		close(fd);
-	xattr.value_size = 11;
 
 	/* Invalid max entries size */
-	xattr.max_entries = 0;
-	fd = bpf_create_map_xattr(&xattr);
+	fd = bpf_create_map(BPF_MAP_TYPE_BLOOM_FILTER, 0, sizeof(value), 0, 0);
 	if (!ASSERT_LT(fd, 0, "bpf_create_map bloom filter invalid max entries size"))
 		close(fd);
-	xattr.max_entries = 100;
 
 	/* Bloom filter maps do not support BPF_F_NO_PREALLOC */
-	xattr.map_flags = BPF_F_NO_PREALLOC;
-	fd = bpf_create_map_xattr(&xattr);
+	fd = bpf_create_map(BPF_MAP_TYPE_BLOOM_FILTER, 0, sizeof(value), 100,
+			    BPF_F_NO_PREALLOC);
 	if (!ASSERT_LT(fd, 0, "bpf_create_map bloom filter invalid flags"))
 		close(fd);
-	xattr.map_flags = 0;
 
-	fd = bpf_create_map_xattr(&xattr);
+	fd = bpf_create_map(BPF_MAP_TYPE_BLOOM_FILTER, 0, sizeof(value), 100, 0);
 	if (!ASSERT_GE(fd, 0, "bpf_create_map bloom filter"))
 		return;
 
@@ -67,6 +54,30 @@ static void test_fail_cases(void)
 	close(fd);
 }
 
+static void test_success_cases(void)
+{
+	char value[11];
+	int fd, err;
+
+	/* Create a map */
+	fd = bpf_create_map(BPF_MAP_TYPE_BLOOM_FILTER, 0, sizeof(value), 100,
+			    BPF_F_ZERO_SEED | BPF_F_NUMA_NODE);
+	if (!ASSERT_GE(fd, 0, "bpf_create_map bloom filter success case"))
+		return;
+
+	/* Add a value to the bloom filter */
+	err = bpf_map_update_elem(fd, NULL, &value, 0);
+	if (!ASSERT_OK(err, "bpf_map_update_elem bloom filter success case"))
+		goto done;
+
+	 /* Lookup a value in the bloom filter */
+	err = bpf_map_lookup_elem(fd, NULL, &value);
+	ASSERT_OK(err, "bpf_map_update_elem bloom filter success case");
+
+done:
+	close(fd);
+}
+
 static void check_bloom(struct bloom_filter_map *skel)
 {
 	struct bpf_link *link;
@@ -86,16 +97,11 @@ static void test_inner_map(struct bloom_filter_map *skel, const __u32 *rand_vals
 			   __u32 nr_rand_vals)
 {
 	int outer_map_fd, inner_map_fd, err, i, key = 0;
-	struct bpf_create_map_attr xattr = {
-		.name = "bloom_filter_inner_map",
-		.map_type = BPF_MAP_TYPE_BLOOM_FILTER,
-		.value_size = sizeof(__u32),
-		.max_entries = nr_rand_vals,
-	};
 	struct bpf_link *link;
 
 	/* Create a bloom filter map that will be used as the inner map */
-	inner_map_fd = bpf_create_map_xattr(&xattr);
+	inner_map_fd = bpf_create_map(BPF_MAP_TYPE_BLOOM_FILTER, 0, sizeof(*rand_vals),
+				      nr_rand_vals, 0);
 	if (!ASSERT_GE(inner_map_fd, 0, "bpf_create_map bloom filter inner map"))
 		return;
 
@@ -190,6 +196,7 @@ void test_bloom_filter_map(void)
 	int err;
 
 	test_fail_cases();
+	test_success_cases();
 
 	err = setup_progs(&skel, &rand_vals, &nr_rand_vals);
 	if (err)
-- 
cgit v1.2.3


From a20eac0af02810669e187cb623bc904908c423af Mon Sep 17 00:00:00 2001
From: Andrii Nakryiko <andrii@kernel.org>
Date: Mon, 1 Nov 2021 16:01:18 -0700
Subject: selftests/bpf: Fix also no-alu32 strobemeta selftest

Previous fix aded bpf_clamp_umax() helper use to re-validate boundaries.
While that works correctly, it introduces more branches, which blows up
past 1 million instructions in no-alu32 variant of strobemeta selftests.

Switching len variable from u32 to u64 also fixes the issue and reduces
the number of validated instructions, so use that instead. Fix this
patch and bpf_clamp_umax() removed, both alu32 and no-alu32 selftests
pass.

Fixes: 0133c20480b1 ("selftests/bpf: Fix strobemeta selftest regression")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211101230118.1273019-1-andrii@kernel.org
---
 tools/testing/selftests/bpf/progs/strobemeta.h | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/progs/strobemeta.h b/tools/testing/selftests/bpf/progs/strobemeta.h
index 3687ea755ab5..60c93aee2f4a 100644
--- a/tools/testing/selftests/bpf/progs/strobemeta.h
+++ b/tools/testing/selftests/bpf/progs/strobemeta.h
@@ -10,14 +10,6 @@
 #include <linux/types.h>
 #include <bpf/bpf_helpers.h>
 
-#define bpf_clamp_umax(VAR, UMAX)					\
-	asm volatile (							\
-		"if %0 <= %[max] goto +1\n"				\
-		"%0 = %[max]\n"						\
-		: "+r"(VAR)						\
-		: [max]"i"(UMAX)					\
-	)
-
 typedef uint32_t pid_t;
 struct task_struct {};
 
@@ -366,7 +358,7 @@ static __always_inline uint64_t read_str_var(struct strobemeta_cfg *cfg,
 					     void *payload)
 {
 	void *location;
-	uint32_t len;
+	uint64_t len;
 
 	data->str_lens[idx] = 0;
 	location = calc_location(&cfg->str_locs[idx], tls_base);
@@ -398,7 +390,7 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 	struct strobe_map_descr* descr = &data->map_descrs[idx];
 	struct strobe_map_raw map;
 	void *location;
-	uint32_t len;
+	uint64_t len;
 	int i;
 
 	descr->tag_len = 0; /* presume no tag is set */
@@ -421,7 +413,6 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 
 	len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN, map.tag);
 	if (len <= STROBE_MAX_STR_LEN) {
-		bpf_clamp_umax(len, STROBE_MAX_STR_LEN);
 		descr->tag_len = len;
 		payload += len;
 	}
@@ -439,7 +430,6 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 		len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN,
 					      map.entries[i].key);
 		if (len <= STROBE_MAX_STR_LEN) {
-			bpf_clamp_umax(len, STROBE_MAX_STR_LEN);
 			descr->key_lens[i] = len;
 			payload += len;
 		}
@@ -447,7 +437,6 @@ static __always_inline void *read_map_var(struct strobemeta_cfg *cfg,
 		len = bpf_probe_read_user_str(payload, STROBE_MAX_STR_LEN,
 					      map.entries[i].val);
 		if (len <= STROBE_MAX_STR_LEN) {
-			bpf_clamp_umax(len, STROBE_MAX_STR_LEN);
 			descr->val_lens[i] = len;
 			payload += len;
 		}
-- 
cgit v1.2.3


From b9979db8340154526d9ab38a1883d6f6ba9b6d47 Mon Sep 17 00:00:00 2001
From: Alexei Starovoitov <ast@kernel.org>
Date: Mon, 1 Nov 2021 15:21:51 -0700
Subject: bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and
 var_off.

Before this fix:
166: (b5) if r2 <= 0x1 goto pc+22
from 166 to 189: R2=invP(id=1,umax_value=1,var_off=(0x0; 0xffffffff))

After this fix:
166: (b5) if r2 <= 0x1 goto pc+22
from 166 to 189: R2=invP(id=1,umax_value=1,var_off=(0x0; 0x1))

While processing BPF_JLE the reg_set_min_max() would set true_reg->umax_value = 1
and call __reg_combine_64_into_32(true_reg).

Without the fix it would not pass the condition:
if (__reg64_bound_u32(reg->umin_value) && __reg64_bound_u32(reg->umax_value))

since umin_value == 0 at this point.
Before commit 10bf4e83167c the umin was incorrectly ingored.
The commit 10bf4e83167c fixed the correctness issue, but pessimized
propagation of 64-bit min max into 32-bit min max and corresponding var_off.

Fixes: 10bf4e83167c ("bpf: Fix propagation of 32 bit unsigned bounds from 64 bit bounds")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211101222153.78759-1-alexei.starovoitov@gmail.com
---
 kernel/bpf/verifier.c                               | 2 +-
 tools/testing/selftests/bpf/verifier/array_access.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'tools/testing')

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 3c8aa7df1773..29671ed49ee8 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -1425,7 +1425,7 @@ static bool __reg64_bound_s32(s64 a)
 
 static bool __reg64_bound_u32(u64 a)
 {
-	return a > U32_MIN && a < U32_MAX;
+	return a >= U32_MIN && a <= U32_MAX;
 }
 
 static void __reg_combine_64_into_32(struct bpf_reg_state *reg)
diff --git a/tools/testing/selftests/bpf/verifier/array_access.c b/tools/testing/selftests/bpf/verifier/array_access.c
index 1b1c798e9248..1b138cd2b187 100644
--- a/tools/testing/selftests/bpf/verifier/array_access.c
+++ b/tools/testing/selftests/bpf/verifier/array_access.c
@@ -186,7 +186,7 @@
 	},
 	.fixup_map_hash_48b = { 3 },
 	.errstr_unpriv = "R0 leaks addr",
-	.errstr = "R0 unbounded memory access",
+	.errstr = "invalid access to map value, value_size=48 off=44 size=8",
 	.result_unpriv = REJECT,
 	.result = REJECT,
 	.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-- 
cgit v1.2.3


From 0869e5078afbd1b22c20832b391b2d85291bc0a8 Mon Sep 17 00:00:00 2001
From: Alexei Starovoitov <ast@kernel.org>
Date: Mon, 1 Nov 2021 15:21:53 -0700
Subject: selftests/bpf: Add a testcase for 64-bit bounds propagation issue.

./test_progs-no_alu32 -vv -t twfw

Before the 64-bit_into_32-bit fix:
19: (25) if r1 > 0x3f goto pc+6
 R1_w=inv(id=0,umax_value=63,var_off=(0x0; 0xff),s32_max_value=255,u32_max_value=255)

and eventually:

invalid access to map value, value_size=8 off=7 size=8
R6 max value is outside of the allowed memory range
libbpf: failed to load object 'no_alu32/twfw.o'

After the fix:
19: (25) if r1 > 0x3f goto pc+6
 R1_w=inv(id=0,umax_value=63,var_off=(0x0; 0x3f))

verif_twfw:OK

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211101222153.78759-3-alexei.starovoitov@gmail.com
---
 .../selftests/bpf/prog_tests/bpf_verif_scale.c     |  5 ++
 tools/testing/selftests/bpf/progs/twfw.c           | 58 ++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 tools/testing/selftests/bpf/progs/twfw.c

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
index 867349e4ed9e..27f5d8ea7964 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
@@ -202,3 +202,8 @@ void test_verif_scale_seg6_loop()
 {
 	scale_test("test_seg6_loop.o", BPF_PROG_TYPE_LWT_SEG6LOCAL, false);
 }
+
+void test_verif_twfw()
+{
+	scale_test("twfw.o", BPF_PROG_TYPE_CGROUP_SKB, false);
+}
diff --git a/tools/testing/selftests/bpf/progs/twfw.c b/tools/testing/selftests/bpf/progs/twfw.c
new file mode 100644
index 000000000000..de1b18a62b46
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/twfw.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <linux/types.h>
+#include <bpf/bpf_helpers.h>
+#include <linux/bpf.h>
+#include <stdint.h>
+
+#define TWFW_MAX_TIERS (64)
+/*
+ * load is successful
+ * #define TWFW_MAX_TIERS (64u)$
+ */
+
+struct twfw_tier_value {
+	unsigned long mask[1];
+};
+
+struct rule {
+	uint8_t seqnum;
+};
+
+struct rules_map {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__type(key, __u32);
+	__type(value, struct rule);
+	__uint(max_entries, 1);
+};
+
+struct tiers_map {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__type(key, __u32);
+	__type(value, struct twfw_tier_value);
+	__uint(max_entries, 1);
+};
+
+struct rules_map rules SEC(".maps");
+struct tiers_map tiers SEC(".maps");
+
+SEC("cgroup_skb/ingress")
+int twfw_verifier(struct __sk_buff* skb)
+{
+	const uint32_t key = 0;
+	const struct twfw_tier_value* tier = bpf_map_lookup_elem(&tiers, &key);
+	if (!tier)
+		return 1;
+
+	struct rule* rule = bpf_map_lookup_elem(&rules, &key);
+	if (!rule)
+		return 1;
+
+	if (rule && rule->seqnum < TWFW_MAX_TIERS) {
+		/* rule->seqnum / 64 should always be 0 */
+		unsigned long mask = tier->mask[rule->seqnum / 64];
+		if (mask)
+			return 0;
+	}
+	return 1;
+}
-- 
cgit v1.2.3


From f86ca07eb5310a1bdc7032458c7f76862f5a1552 Mon Sep 17 00:00:00 2001
From: James Prestwood <prestwoj@gmail.com>
Date: Mon, 1 Nov 2021 10:36:30 -0700
Subject: selftests: net: add arp_ndisc_evict_nocarrier

This tests the sysctl options for ARP/ND:

/net/ipv4/conf/<iface>/arp_evict_nocarrier
/net/ipv4/conf/all/arp_evict_nocarrier
/net/ipv6/conf/<iface>/ndisc_evict_nocarrier
/net/ipv6/conf/all/ndisc_evict_nocarrier

Signed-off-by: James Prestwood <prestwoj@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 .../selftests/net/arp_ndisc_evict_nocarrier.sh     | 220 +++++++++++++++++++++
 1 file changed, 220 insertions(+)
 create mode 100755 tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh

(limited to 'tools/testing')

diff --git a/tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh b/tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh
new file mode 100755
index 000000000000..b5af08af8559
--- /dev/null
+++ b/tools/testing/selftests/net/arp_ndisc_evict_nocarrier.sh
@@ -0,0 +1,220 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Tests sysctl options {arp,ndisc}_evict_nocarrier={0,1}
+#
+# Create a veth pair and set IPs/routes on both. Then ping to establish
+# an entry in the ARP/ND table. Depending on the test set sysctl option to
+# 1 or 0. Set remote veth down which will cause local veth to go into a no
+# carrier state. Depending on the test check the ARP/ND table:
+#
+# {arp,ndisc}_evict_nocarrier=1 should contain no ARP/ND after no carrier
+# {arp,ndisc}_evict_nocarrer=0 should still contain the single ARP/ND entry
+#
+
+readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"
+readonly V4_ADDR0=10.0.10.1
+readonly V4_ADDR1=10.0.10.2
+readonly V6_ADDR0=2001:db8:91::1
+readonly V6_ADDR1=2001:db8:91::2
+nsid=100
+
+cleanup_v6()
+{
+    ip netns del me
+    ip netns del peer
+
+    sysctl -w net.ipv4.conf.veth0.ndisc_evict_nocarrier=1 >/dev/null 2>&1
+    sysctl -w net.ipv4.conf.all.ndisc_evict_nocarrier=1 >/dev/null 2>&1
+}
+
+create_ns()
+{
+    local n=${1}
+
+    ip netns del ${n} 2>/dev/null
+
+    ip netns add ${n}
+    ip netns set ${n} $((nsid++))
+    ip -netns ${n} link set lo up
+}
+
+
+setup_v6() {
+    create_ns me
+    create_ns peer
+
+    IP="ip -netns me"
+
+    $IP li add veth1 type veth peer name veth2
+    $IP li set veth1 up
+    $IP -6 addr add $V6_ADDR0/64 dev veth1 nodad
+    $IP li set veth2 netns peer up
+    ip -netns peer -6 addr add $V6_ADDR1/64 dev veth2 nodad
+
+    ip netns exec me sysctl -w $1 >/dev/null 2>&1
+
+    # Establish an ND cache entry
+    ip netns exec me ping -6 -c1 -Iveth1 $V6_ADDR1 >/dev/null 2>&1
+    # Should have the veth1 entry in ND table
+    ip netns exec me ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        cleanup_v6
+        echo "failed"
+        exit
+    fi
+
+    # Set veth2 down, which will put veth1 in NOCARRIER state
+    ip netns exec peer ip link set veth2 down
+}
+
+setup_v4() {
+    ip netns add "${PEER_NS}"
+    ip link add name veth0 type veth peer name veth1
+    ip link set dev veth0 up
+    ip link set dev veth1 netns "${PEER_NS}"
+    ip netns exec "${PEER_NS}" ip link set dev veth1 up
+    ip addr add $V4_ADDR0/24 dev veth0
+    ip netns exec "${PEER_NS}" ip addr add $V4_ADDR1/24 dev veth1
+    ip netns exec ${PEER_NS} ip route add default via $V4_ADDR1 dev veth1
+    ip route add default via $V4_ADDR0 dev veth0
+
+    sysctl -w "$1" >/dev/null 2>&1
+
+    # Establish an ARP cache entry
+    ping -c1 -I veth0 $V4_ADDR1 -q >/dev/null 2>&1
+    # Should have the veth1 entry in ARP table
+    ip neigh get $V4_ADDR1 dev veth0 >/dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        cleanup_v4
+        echo "failed"
+        exit
+    fi
+
+    # Set veth1 down, which will put veth0 in NOCARRIER state
+    ip netns exec "${PEER_NS}" ip link set veth1 down
+}
+
+cleanup_v4() {
+    ip neigh flush dev veth0
+    ip link del veth0
+    local -r ns="$(ip netns list|grep $PEER_NS)"
+    [ -n "$ns" ] && ip netns del $ns 2>/dev/null
+
+    sysctl -w net.ipv4.conf.veth0.arp_evict_nocarrier=1 >/dev/null 2>&1
+    sysctl -w net.ipv4.conf.all.arp_evict_nocarrier=1 >/dev/null 2>&1
+}
+
+# Run test when arp_evict_nocarrier = 1 (default).
+run_arp_evict_nocarrier_enabled() {
+    echo "run arp_evict_nocarrier=1 test"
+    setup_v4 "net.ipv4.conf.veth0.arp_evict_nocarrier=1"
+
+    # ARP table should be empty
+    ip neigh get $V4_ADDR1 dev veth0 >/dev/null 2>&1
+
+    if [ $? -eq 0 ];then
+        echo "failed"
+    else
+        echo "ok"
+    fi
+
+    cleanup_v4
+}
+
+# Run test when arp_evict_nocarrier = 0
+run_arp_evict_nocarrier_disabled() {
+    echo "run arp_evict_nocarrier=0 test"
+    setup_v4 "net.ipv4.conf.veth0.arp_evict_nocarrier=0"
+
+    # ARP table should still contain the entry
+    ip neigh get $V4_ADDR1 dev veth0 >/dev/null 2>&1
+
+    if [ $? -eq 0 ];then
+        echo "ok"
+    else
+        echo "failed"
+    fi
+
+    cleanup_v4
+}
+
+run_arp_evict_nocarrier_disabled_all() {
+    echo "run all.arp_evict_nocarrier=0 test"
+    setup_v4 "net.ipv4.conf.all.arp_evict_nocarrier=0"
+
+    # ARP table should still contain the entry
+    ip neigh get $V4_ADDR1 dev veth0 >/dev/null 2>&1
+
+    if [ $? -eq 0 ];then
+        echo "ok"
+    else
+        echo "failed"
+    fi
+
+    cleanup_v4
+}
+
+run_ndisc_evict_nocarrier_enabled() {
+    echo "run ndisc_evict_nocarrier=1 test"
+
+    setup_v6 "net.ipv6.conf.veth1.ndisc_evict_nocarrier=1"
+
+    ip netns exec me ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
+
+    if [ $? -eq 0 ];then
+        echo "failed"
+    else
+        echo "ok"
+    fi
+
+    cleanup_v6
+}
+
+run_ndisc_evict_nocarrier_disabled() {
+    echo "run ndisc_evict_nocarrier=0 test"
+
+    setup_v6 "net.ipv6.conf.veth1.ndisc_evict_nocarrier=0"
+
+    ip netns exec me ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
+
+    if [ $? -eq 0 ];then
+        echo "ok"
+    else
+        echo "failed"
+    fi
+
+    cleanup_v6
+}
+
+run_ndisc_evict_nocarrier_disabled_all() {
+    echo "run all.ndisc_evict_nocarrier=0 test"
+
+    setup_v6 "net.ipv6.conf.all.ndisc_evict_nocarrier=0"
+
+    ip netns exec me ip -6 neigh get $V6_ADDR1 dev veth1 >/dev/null 2>&1
+
+    if [ $? -eq 0 ];then
+        echo "ok"
+    else
+        echo "failed"
+    fi
+
+    cleanup_v6
+}
+
+run_all_tests() {
+    run_arp_evict_nocarrier_enabled
+    run_arp_evict_nocarrier_disabled
+    run_arp_evict_nocarrier_disabled_all
+    run_ndisc_evict_nocarrier_enabled
+    run_ndisc_evict_nocarrier_disabled
+    run_ndisc_evict_nocarrier_disabled_all
+}
+
+if [ "$(id -u)" -ne 0 ];then
+	echo "SKIP: Need root privileges"
+	exit $ksft_skip;
+fi
+
+run_all_tests
-- 
cgit v1.2.3