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| author | Johan Almbladh <johan.almbladh@anyfinetworks.com> | 2021-08-09 11:18:20 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-08-10 11:33:05 +0200 |
| commit | 0f2fca1ab18319dcb47f6b15b7c5d3f29da84b6d (patch) | |
| tree | f8b9ccac1e0fecf806251913454e6a78885d4c4c /lib | |
| parent | ba89bcf78fba8ff99d84b762c56fbfdabc97731c (diff) | |
| download | lwn-0f2fca1ab18319dcb47f6b15b7c5d3f29da84b6d.tar.gz lwn-0f2fca1ab18319dcb47f6b15b7c5d3f29da84b6d.zip | |
bpf, tests: Add more ALU32 tests for BPF_LSH/RSH/ARSH
This patch adds more tests of ALU32 shift operations BPF_LSH and BPF_RSH,
including the special case of a zero immediate. Also add corresponding
BPF_ARSH tests which were missing for ALU32.
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/20210809091829.810076-6-johan.almbladh@anyfinetworks.com
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/test_bpf.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/lib/test_bpf.c b/lib/test_bpf.c index 73c2ea0cb13b..8694b1fb8ff2 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -4104,6 +4104,18 @@ static struct bpf_test tests[] = { { { 0, 0x80000000 } }, }, { + "ALU_LSH_X: 0x12345678 << 12 = 0x45678000", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678), + BPF_ALU32_IMM(BPF_MOV, R1, 12), + BPF_ALU32_REG(BPF_LSH, R0, R1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x45678000 } } + }, + { "ALU64_LSH_X: 1 << 1 = 2", .u.insns_int = { BPF_LD_IMM64(R0, 1), @@ -4151,6 +4163,28 @@ static struct bpf_test tests[] = { { { 0, 0x80000000 } }, }, { + "ALU_LSH_K: 0x12345678 << 12 = 0x45678000", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678), + BPF_ALU32_IMM(BPF_LSH, R0, 12), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x45678000 } } + }, + { + "ALU_LSH_K: 0x12345678 << 0 = 0x12345678", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678), + BPF_ALU32_IMM(BPF_LSH, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x12345678 } } + }, + { "ALU64_LSH_K: 1 << 1 = 2", .u.insns_int = { BPF_LD_IMM64(R0, 1), @@ -4198,6 +4232,18 @@ static struct bpf_test tests[] = { { { 0, 1 } }, }, { + "ALU_RSH_X: 0x12345678 >> 20 = 0x123", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678), + BPF_ALU32_IMM(BPF_MOV, R1, 20), + BPF_ALU32_REG(BPF_RSH, R0, R1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x123 } } + }, + { "ALU64_RSH_X: 2 >> 1 = 1", .u.insns_int = { BPF_LD_IMM64(R0, 2), @@ -4245,6 +4291,28 @@ static struct bpf_test tests[] = { { { 0, 1 } }, }, { + "ALU_RSH_K: 0x12345678 >> 20 = 0x123", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678), + BPF_ALU32_IMM(BPF_RSH, R0, 20), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x123 } } + }, + { + "ALU_RSH_K: 0x12345678 >> 0 = 0x12345678", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, 0x12345678), + BPF_ALU32_IMM(BPF_RSH, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, 0x12345678 } } + }, + { "ALU64_RSH_K: 2 >> 1 = 1", .u.insns_int = { BPF_LD_IMM64(R0, 2), @@ -4268,6 +4336,18 @@ static struct bpf_test tests[] = { }, /* BPF_ALU | BPF_ARSH | BPF_X */ { + "ALU32_ARSH_X: -1234 >> 7 = -10", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -1234), + BPF_ALU32_IMM(BPF_MOV, R1, 7), + BPF_ALU32_REG(BPF_ARSH, R0, R1), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -10 } } + }, + { "ALU_ARSH_X: 0xff00ff0000000000 >> 40 = 0xffffffffffff00ff", .u.insns_int = { BPF_LD_IMM64(R0, 0xff00ff0000000000LL), @@ -4281,6 +4361,28 @@ static struct bpf_test tests[] = { }, /* BPF_ALU | BPF_ARSH | BPF_K */ { + "ALU32_ARSH_K: -1234 >> 7 = -10", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -1234), + BPF_ALU32_IMM(BPF_ARSH, R0, 7), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -10 } } + }, + { + "ALU32_ARSH_K: -1234 >> 0 = -1234", + .u.insns_int = { + BPF_ALU32_IMM(BPF_MOV, R0, -1234), + BPF_ALU32_IMM(BPF_ARSH, R0, 0), + BPF_EXIT_INSN(), + }, + INTERNAL, + { }, + { { 0, -1234 } } + }, + { "ALU_ARSH_K: 0xff00ff0000000000 >> 40 = 0xffffffffffff00ff", .u.insns_int = { BPF_LD_IMM64(R0, 0xff00ff0000000000LL), |