diff options
author | Martin KaFai Lau <kafai@fb.com> | 2019-04-27 02:39:46 +0300 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2019-04-27 19:07:05 +0300 |
commit | 3f4d4c74101d60b88d23289bd4f5f6126c7235fc (patch) | |
tree | 66e9ffe057aa4888a9878033486b7a43a32f93f2 | |
parent | a19f89f3667c950ad13c1560e4abd8aa8526b6b1 (diff) | |
download | linux-3f4d4c74101d60b88d23289bd4f5f6126c7235fc.tar.xz |
bpf: Refactor BTF encoding macro to test_btf.h
Refactor common BTF encoding macros for other tests to use.
The libbpf may reuse some of them in the future which requires
some more thoughts before publishing as a libbpf API.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
-rw-r--r-- | tools/testing/selftests/bpf/test_btf.c | 63 | ||||
-rw-r--r-- | tools/testing/selftests/bpf/test_btf.h | 69 |
2 files changed, 70 insertions, 62 deletions
diff --git a/tools/testing/selftests/bpf/test_btf.c b/tools/testing/selftests/bpf/test_btf.c index f8eb7987b794..42c1ce988945 100644 --- a/tools/testing/selftests/bpf/test_btf.c +++ b/tools/testing/selftests/bpf/test_btf.c @@ -24,6 +24,7 @@ #include "bpf_rlimit.h" #include "bpf_util.h" +#include "test_btf.h" #define MAX_INSNS 512 #define MAX_SUBPROGS 16 @@ -58,68 +59,6 @@ static int __base_pr(enum libbpf_print_level level __attribute__((unused)), return vfprintf(stderr, format, args); } -#define BTF_INFO_ENC(kind, kind_flag, vlen) \ - ((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN)) - -#define BTF_TYPE_ENC(name, info, size_or_type) \ - (name), (info), (size_or_type) - -#define BTF_INT_ENC(encoding, bits_offset, nr_bits) \ - ((encoding) << 24 | (bits_offset) << 16 | (nr_bits)) -#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz) \ - BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz), \ - BTF_INT_ENC(encoding, bits_offset, bits) - -#define BTF_FWD_ENC(name, kind_flag) \ - BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FWD, kind_flag, 0), 0) - -#define BTF_ARRAY_ENC(type, index_type, nr_elems) \ - (type), (index_type), (nr_elems) -#define BTF_TYPE_ARRAY_ENC(type, index_type, nr_elems) \ - BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), \ - BTF_ARRAY_ENC(type, index_type, nr_elems) - -#define BTF_STRUCT_ENC(name, nr_elems, sz) \ - BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, nr_elems), sz) - -#define BTF_UNION_ENC(name, nr_elems, sz) \ - BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_UNION, 0, nr_elems), sz) - -#define BTF_VAR_ENC(name, type, linkage) \ - BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), type), (linkage) -#define BTF_VAR_SECINFO_ENC(type, offset, size) \ - (type), (offset), (size) - -#define BTF_MEMBER_ENC(name, type, bits_offset) \ - (name), (type), (bits_offset) -#define BTF_ENUM_ENC(name, val) (name), (val) -#define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \ - ((bitfield_size) << 24 | (bits_offset)) - -#define BTF_TYPEDEF_ENC(name, type) \ - BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), type) - -#define BTF_PTR_ENC(type) \ - BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), type) - -#define BTF_CONST_ENC(type) \ - BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), type) - -#define BTF_VOLATILE_ENC(type) \ - BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), type) - -#define BTF_RESTRICT_ENC(type) \ - BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), type) - -#define BTF_FUNC_PROTO_ENC(ret_type, nargs) \ - BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, nargs), ret_type) - -#define BTF_FUNC_PROTO_ARG_ENC(name, type) \ - (name), (type) - -#define BTF_FUNC_ENC(name, func_proto) \ - BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0), func_proto) - #define BTF_END_RAW 0xdeadbeef #define NAME_TBD 0xdeadb33f diff --git a/tools/testing/selftests/bpf/test_btf.h b/tools/testing/selftests/bpf/test_btf.h new file mode 100644 index 000000000000..2023725f1962 --- /dev/null +++ b/tools/testing/selftests/bpf/test_btf.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2019 Facebook */ + +#ifndef _TEST_BTF_H +#define _TEST_BTF_H + +#define BTF_INFO_ENC(kind, kind_flag, vlen) \ + ((!!(kind_flag) << 31) | ((kind) << 24) | ((vlen) & BTF_MAX_VLEN)) + +#define BTF_TYPE_ENC(name, info, size_or_type) \ + (name), (info), (size_or_type) + +#define BTF_INT_ENC(encoding, bits_offset, nr_bits) \ + ((encoding) << 24 | (bits_offset) << 16 | (nr_bits)) +#define BTF_TYPE_INT_ENC(name, encoding, bits_offset, bits, sz) \ + BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), sz), \ + BTF_INT_ENC(encoding, bits_offset, bits) + +#define BTF_FWD_ENC(name, kind_flag) \ + BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FWD, kind_flag, 0), 0) + +#define BTF_ARRAY_ENC(type, index_type, nr_elems) \ + (type), (index_type), (nr_elems) +#define BTF_TYPE_ARRAY_ENC(type, index_type, nr_elems) \ + BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0), \ + BTF_ARRAY_ENC(type, index_type, nr_elems) + +#define BTF_STRUCT_ENC(name, nr_elems, sz) \ + BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, nr_elems), sz) + +#define BTF_UNION_ENC(name, nr_elems, sz) \ + BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_UNION, 0, nr_elems), sz) + +#define BTF_VAR_ENC(name, type, linkage) \ + BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), type), (linkage) +#define BTF_VAR_SECINFO_ENC(type, offset, size) \ + (type), (offset), (size) + +#define BTF_MEMBER_ENC(name, type, bits_offset) \ + (name), (type), (bits_offset) +#define BTF_ENUM_ENC(name, val) (name), (val) +#define BTF_MEMBER_OFFSET(bitfield_size, bits_offset) \ + ((bitfield_size) << 24 | (bits_offset)) + +#define BTF_TYPEDEF_ENC(name, type) \ + BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), type) + +#define BTF_PTR_ENC(type) \ + BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), type) + +#define BTF_CONST_ENC(type) \ + BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), type) + +#define BTF_VOLATILE_ENC(type) \ + BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), type) + +#define BTF_RESTRICT_ENC(type) \ + BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), type) + +#define BTF_FUNC_PROTO_ENC(ret_type, nargs) \ + BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, nargs), ret_type) + +#define BTF_FUNC_PROTO_ARG_ENC(name, type) \ + (name), (type) + +#define BTF_FUNC_ENC(name, func_proto) \ + BTF_TYPE_ENC(name, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0), func_proto) + +#endif /* _TEST_BTF_H */ |