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authorJohan Almbladh <johan.almbladh@anyfinetworks.com>2021-08-09 12:18:21 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2021-08-10 12:33:08 +0300
commit3b9890ef80f4285d32f2274d20db108e064e5e9e (patch)
tree4b3204bce0425b960580ade550fc09d1bfcccab5 /lib/test_bpf.c
parent0f2fca1ab18319dcb47f6b15b7c5d3f29da84b6d (diff)
downloadlinux-3b9890ef80f4285d32f2274d20db108e064e5e9e.tar.xz
bpf, tests: Add more BPF_LSH/RSH/ARSH tests for ALU64
This patch adds a number of tests for BPF_LSH, BPF_RSH amd BPF_ARSH ALU64 operations with values that may trigger different JIT code paths. Mainly testing 32-bit JITs that implement ALU64 operations with two 32-bit CPU registers per operand. Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210809091829.810076-7-johan.almbladh@anyfinetworks.com
Diffstat (limited to 'lib/test_bpf.c')
-rw-r--r--lib/test_bpf.c544
1 files changed, 542 insertions, 2 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
index 8694b1fb8ff2..b95bed03ab1b 100644
--- a/lib/test_bpf.c
+++ b/lib/test_bpf.c
@@ -4139,6 +4139,106 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 0x80000000 } },
},
+ {
+ "ALU64_LSH_X: Shift < 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 12),
+ BPF_ALU64_REG(BPF_LSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0xbcdef000 } }
+ },
+ {
+ "ALU64_LSH_X: Shift < 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 12),
+ BPF_ALU64_REG(BPF_LSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x3456789a } }
+ },
+ {
+ "ALU64_LSH_X: Shift > 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 36),
+ BPF_ALU64_REG(BPF_LSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0 } }
+ },
+ {
+ "ALU64_LSH_X: Shift > 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 36),
+ BPF_ALU64_REG(BPF_LSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x9abcdef0 } }
+ },
+ {
+ "ALU64_LSH_X: Shift == 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 32),
+ BPF_ALU64_REG(BPF_LSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0 } }
+ },
+ {
+ "ALU64_LSH_X: Shift == 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 32),
+ BPF_ALU64_REG(BPF_LSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x89abcdef } }
+ },
+ {
+ "ALU64_LSH_X: Zero shift, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 0),
+ BPF_ALU64_REG(BPF_LSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x89abcdef } }
+ },
+ {
+ "ALU64_LSH_X: Zero shift, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 0),
+ BPF_ALU64_REG(BPF_LSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x01234567 } }
+ },
/* BPF_ALU | BPF_LSH | BPF_K */
{
"ALU_LSH_K: 1 << 1 = 2",
@@ -4206,6 +4306,86 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 0x80000000 } },
},
+ {
+ "ALU64_LSH_K: Shift < 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_LSH, R0, 12),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0xbcdef000 } }
+ },
+ {
+ "ALU64_LSH_K: Shift < 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_LSH, R0, 12),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x3456789a } }
+ },
+ {
+ "ALU64_LSH_K: Shift > 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_LSH, R0, 36),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0 } }
+ },
+ {
+ "ALU64_LSH_K: Shift > 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_LSH, R0, 36),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x9abcdef0 } }
+ },
+ {
+ "ALU64_LSH_K: Shift == 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_LSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0 } }
+ },
+ {
+ "ALU64_LSH_K: Shift == 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_LSH, R0, 32),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x89abcdef } }
+ },
+ {
+ "ALU64_LSH_K: Zero shift",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_LSH, R0, 0),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x89abcdef } }
+ },
/* BPF_ALU | BPF_RSH | BPF_X */
{
"ALU_RSH_X: 2 >> 1 = 1",
@@ -4267,6 +4447,106 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 1 } },
},
+ {
+ "ALU64_RSH_X: Shift < 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 12),
+ BPF_ALU64_REG(BPF_RSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x56789abc } }
+ },
+ {
+ "ALU64_RSH_X: Shift < 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 12),
+ BPF_ALU64_REG(BPF_RSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x00081234 } }
+ },
+ {
+ "ALU64_RSH_X: Shift > 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 36),
+ BPF_ALU64_REG(BPF_RSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x08123456 } }
+ },
+ {
+ "ALU64_RSH_X: Shift > 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 36),
+ BPF_ALU64_REG(BPF_RSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0 } }
+ },
+ {
+ "ALU64_RSH_X: Shift == 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 32),
+ BPF_ALU64_REG(BPF_RSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x81234567 } }
+ },
+ {
+ "ALU64_RSH_X: Shift == 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 32),
+ BPF_ALU64_REG(BPF_RSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0 } }
+ },
+ {
+ "ALU64_RSH_X: Zero shift, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 0),
+ BPF_ALU64_REG(BPF_RSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x89abcdef } }
+ },
+ {
+ "ALU64_RSH_X: Zero shift, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 0),
+ BPF_ALU64_REG(BPF_RSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x81234567 } }
+ },
/* BPF_ALU | BPF_RSH | BPF_K */
{
"ALU_RSH_K: 2 >> 1 = 1",
@@ -4334,6 +4614,86 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 1 } },
},
+ {
+ "ALU64_RSH_K: Shift < 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_RSH, R0, 12),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x56789abc } }
+ },
+ {
+ "ALU64_RSH_K: Shift < 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_RSH, R0, 12),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x00081234 } }
+ },
+ {
+ "ALU64_RSH_K: Shift > 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_RSH, R0, 36),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x08123456 } }
+ },
+ {
+ "ALU64_RSH_K: Shift > 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_RSH, R0, 36),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0 } }
+ },
+ {
+ "ALU64_RSH_K: Shift == 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x81234567 } }
+ },
+ {
+ "ALU64_RSH_K: Shift == 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0 } }
+ },
+ {
+ "ALU64_RSH_K: Zero shift",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x0123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_RSH, R0, 0),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x89abcdef } }
+ },
/* BPF_ALU | BPF_ARSH | BPF_X */
{
"ALU32_ARSH_X: -1234 >> 7 = -10",
@@ -4348,7 +4708,7 @@ static struct bpf_test tests[] = {
{ { 0, -10 } }
},
{
- "ALU_ARSH_X: 0xff00ff0000000000 >> 40 = 0xffffffffffff00ff",
+ "ALU64_ARSH_X: 0xff00ff0000000000 >> 40 = 0xffffffffffff00ff",
.u.insns_int = {
BPF_LD_IMM64(R0, 0xff00ff0000000000LL),
BPF_ALU32_IMM(BPF_MOV, R1, 40),
@@ -4359,6 +4719,106 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 0xffff00ff } },
},
+ {
+ "ALU64_ARSH_X: Shift < 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 12),
+ BPF_ALU64_REG(BPF_ARSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x56789abc } }
+ },
+ {
+ "ALU64_ARSH_X: Shift < 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 12),
+ BPF_ALU64_REG(BPF_ARSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0xfff81234 } }
+ },
+ {
+ "ALU64_ARSH_X: Shift > 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 36),
+ BPF_ALU64_REG(BPF_ARSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0xf8123456 } }
+ },
+ {
+ "ALU64_ARSH_X: Shift > 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 36),
+ BPF_ALU64_REG(BPF_ARSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, -1 } }
+ },
+ {
+ "ALU64_ARSH_X: Shift == 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 32),
+ BPF_ALU64_REG(BPF_ARSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x81234567 } }
+ },
+ {
+ "ALU64_ARSH_X: Shift == 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 32),
+ BPF_ALU64_REG(BPF_ARSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, -1 } }
+ },
+ {
+ "ALU64_ARSH_X: Zero shift, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 0),
+ BPF_ALU64_REG(BPF_ARSH, R0, R1),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x89abcdef } }
+ },
+ {
+ "ALU64_ARSH_X: Zero shift, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU32_IMM(BPF_MOV, R1, 0),
+ BPF_ALU64_REG(BPF_ARSH, R0, R1),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x81234567 } }
+ },
/* BPF_ALU | BPF_ARSH | BPF_K */
{
"ALU32_ARSH_K: -1234 >> 7 = -10",
@@ -4383,7 +4843,7 @@ static struct bpf_test tests[] = {
{ { 0, -1234 } }
},
{
- "ALU_ARSH_K: 0xff00ff0000000000 >> 40 = 0xffffffffffff00ff",
+ "ALU64_ARSH_K: 0xff00ff0000000000 >> 40 = 0xffffffffffff00ff",
.u.insns_int = {
BPF_LD_IMM64(R0, 0xff00ff0000000000LL),
BPF_ALU64_IMM(BPF_ARSH, R0, 40),
@@ -4393,6 +4853,86 @@ static struct bpf_test tests[] = {
{ },
{ { 0, 0xffff00ff } },
},
+ {
+ "ALU64_ARSH_K: Shift < 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_RSH, R0, 12),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x56789abc } }
+ },
+ {
+ "ALU64_ARSH_K: Shift < 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_ARSH, R0, 12),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0xfff81234 } }
+ },
+ {
+ "ALU64_ARSH_K: Shift > 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_ARSH, R0, 36),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0xf8123456 } }
+ },
+ {
+ "ALU64_ARSH_K: Shift > 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0xf123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_ARSH, R0, 36),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, -1 } }
+ },
+ {
+ "ALU64_ARSH_K: Shift == 32, low word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_ARSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x81234567 } }
+ },
+ {
+ "ALU64_ARSH_K: Shift == 32, high word",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_ARSH, R0, 32),
+ BPF_ALU64_IMM(BPF_RSH, R0, 32),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, -1 } }
+ },
+ {
+ "ALU64_ARSH_K: Zero shoft",
+ .u.insns_int = {
+ BPF_LD_IMM64(R0, 0x8123456789abcdefLL),
+ BPF_ALU64_IMM(BPF_ARSH, R0, 0),
+ BPF_EXIT_INSN(),
+ },
+ INTERNAL,
+ { },
+ { { 0, 0x89abcdef } }
+ },
/* BPF_ALU | BPF_NEG */
{
"ALU_NEG: -(3) = -3",