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| author | Johan Almbladh <johan.almbladh@anyfinetworks.com> | 2021-08-09 12:18:19 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-08-10 12:33:01 +0300 |
| commit | ba89bcf78fba8ff99d84b762c56fbfdabc97731c (patch) | |
| tree | 83521e52def92890fb2064a9518a0555911e2d70 /lib/test_bpf.c | |
| parent | e92c813bf1193248dd9f938e76af545fa9cf7361 (diff) | |
| download | linux-ba89bcf78fba8ff99d84b762c56fbfdabc97731c.tar.xz | |
bpf, tests: Add more tests of ALU32 and ALU64 bitwise operations
This patch adds tests of BPF_AND, BPF_OR and BPF_XOR with different
magnitude of the immediate value. Mainly checking 32-bit JIT sub-word
handling and zero/sign extension.
Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20210809091829.810076-5-johan.almbladh@anyfinetworks.com
Diffstat (limited to 'lib/test_bpf.c')
| -rw-r--r-- | lib/test_bpf.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c index ec36a8bfa3f9..73c2ea0cb13b 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -3515,6 +3515,44 @@ static struct bpf_test tests[] = { { { 0, 0xffffffff } }, }, { + "ALU_AND_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x01020304), + BPF_ALU32_IMM(BPF_AND, R0, 15), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 4 } } + }, + { + "ALU_AND_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xf1f2f3f4), + BPF_ALU32_IMM(BPF_AND, R0, 0xafbfcfdf), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xa1b2c3d4 } } + }, + { + "ALU_AND_K: Zero extension", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0x0000000080a0c0e0LL), + BPF_ALU32_IMM(BPF_AND, R0, 0xf0f0f0f0), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, + { "ALU64_AND_K: 3 & 2 = 2", .u.insns_int = { BPF_LD_IMM64(R0, 3), @@ -3584,6 +3622,38 @@ static struct bpf_test tests[] = { { }, { { 0, 0x1 } }, }, + { + "ALU64_AND_K: Sign extension 1", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0x00000000090b0d0fLL), + BPF_ALU64_IMM(BPF_AND, R0, 0x0f0f0f0f), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, + { + "ALU64_AND_K: Sign extension 2", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0x0123456780a0c0e0LL), + BPF_ALU64_IMM(BPF_AND, R0, 0xf0f0f0f0), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, /* BPF_ALU | BPF_OR | BPF_X */ { "ALU_OR_X: 1 | 2 = 3", @@ -3657,6 +3727,44 @@ static struct bpf_test tests[] = { { { 0, 0xffffffff } }, }, { + "ALU_OR_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x01020304), + BPF_ALU32_IMM(BPF_OR, R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x01020305 } } + }, + { + "ALU_OR_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x01020304), + BPF_ALU32_IMM(BPF_OR, R0, 0xa0b0c0d0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0xa1b2c3d4 } } + }, + { + "ALU_OR_K: Zero extension", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0x00000000f9fbfdffLL), + BPF_ALU32_IMM(BPF_OR, R0, 0xf0f0f0f0), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, + { "ALU64_OR_K: 1 | 2 = 3", .u.insns_int = { BPF_LD_IMM64(R0, 1), @@ -3726,6 +3834,38 @@ static struct bpf_test tests[] = { { }, { { 0, 0x1 } }, }, + { + "ALU64_OR_K: Sign extension 1", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0x012345678fafcfefLL), + BPF_ALU64_IMM(BPF_OR, R0, 0x0f0f0f0f), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, + { + "ALU64_OR_K: Sign extension 2", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0xfffffffff9fbfdffLL), + BPF_ALU64_IMM(BPF_OR, R0, 0xf0f0f0f0), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, /* BPF_ALU | BPF_XOR | BPF_X */ { "ALU_XOR_X: 5 ^ 6 = 3", @@ -3799,6 +3939,44 @@ static struct bpf_test tests[] = { { { 0, 0xfffffffe } }, }, { + "ALU_XOR_K: Small immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x01020304), + BPF_ALU32_IMM(BPF_XOR, R0, 15), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x0102030b } } + }, + { + "ALU_XOR_K: Large immediate", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0xf1f2f3f4), + BPF_ALU32_IMM(BPF_XOR, R0, 0xafbfcfdf), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x5e4d3c2b } } + }, + { + "ALU_XOR_K: Zero extension", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0x00000000795b3d1fLL), + BPF_ALU32_IMM(BPF_XOR, R0, 0xf0f0f0f0), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, + { "ALU64_XOR_K: 5 ^ 6 = 3", .u.insns_int = { BPF_LD_IMM64(R0, 5), @@ -3868,6 +4046,38 @@ static struct bpf_test tests[] = { { }, { { 0, 0x1 } }, }, + { + "ALU64_XOR_K: Sign extension 1", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0x0123456786a4c2e0LL), + BPF_ALU64_IMM(BPF_XOR, R0, 0x0f0f0f0f), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, + { + "ALU64_XOR_K: Sign extension 2", + .u.insns_int = { + BPF_LD_IMM64(R0, 0x0123456789abcdefLL), + BPF_LD_IMM64(R1, 0xfedcba98795b3d1fLL), + BPF_ALU64_IMM(BPF_XOR, R0, 0xf0f0f0f0), + BPF_JMP_REG(BPF_JEQ, R0, R1, 2), + BPF_MOV32_IMM(R0, 2), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(R0, 1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 1 } } + }, /* BPF_ALU | BPF_LSH | BPF_X */ { "ALU_LSH_X: 1 << 1 = 2", |