diff options
| author |   Andrey Ignatov <rdna@fb.com> | 2018-11-10 22:15:15 -0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2018-11-10 22:29:59 -0800 |
| commit | e7605475f5f1af58668701b5ffe7763bdeb28527 (patch) | |
| tree | 909ae9f0eb94d01c31e640c7a4a95f7ff400d959 /tools/testing/selftests/bpf/test_sock_addr.c | |
| parent | selftests/bpf: Test narrow loads with off > 0 in test_verifier (diff) | |
| download | linux-dev-e7605475f5f1af58668701b5ffe7763bdeb28527.tar.xz linux-dev-e7605475f5f1af58668701b5ffe7763bdeb28527.zip | |
selftests/bpf: Test narrow loads with off > 0 for bpf_sock_addr
Add more test cases for context bpf_sock_addr to test narrow loads with
offset > 0 for ctx->user_ip4 field (__u32):
* off=1, size=1;
* off=2, size=1;
* off=3, size=1;
* off=2, size=2.
Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/bpf/test_sock_addr.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/tools/testing/selftests/bpf/test_sock_addr.c b/tools/testing/selftests/bpf/test_sock_addr.c index aeeb76a54d63..73b7493d4120 100644 --- a/tools/testing/selftests/bpf/test_sock_addr.c +++ b/tools/testing/selftests/bpf/test_sock_addr.c @@ -574,24 +574,44 @@ static int bind4_prog_load(const struct sock_addr_test *test) /* if (sk.family == AF_INET && */ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, offsetof(struct bpf_sock_addr, family)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, AF_INET, 16), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, AF_INET, 24), /* (sk.type == SOCK_DGRAM || sk.type == SOCK_STREAM) && */ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, offsetof(struct bpf_sock_addr, type)), BPF_JMP_IMM(BPF_JNE, BPF_REG_7, SOCK_DGRAM, 1), BPF_JMP_A(1), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, SOCK_STREAM, 12), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, SOCK_STREAM, 20), /* 1st_byte_of_user_ip4 == expected && */ BPF_LDX_MEM(BPF_B, BPF_REG_7, BPF_REG_6, offsetof(struct bpf_sock_addr, user_ip4)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, ip4.u4_addr8[0], 10), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, ip4.u4_addr8[0], 18), + + /* 2nd_byte_of_user_ip4 == expected && */ + BPF_LDX_MEM(BPF_B, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock_addr, user_ip4) + 1), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, ip4.u4_addr8[1], 16), + + /* 3rd_byte_of_user_ip4 == expected && */ + BPF_LDX_MEM(BPF_B, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock_addr, user_ip4) + 2), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, ip4.u4_addr8[2], 14), + + /* 4th_byte_of_user_ip4 == expected && */ + BPF_LDX_MEM(BPF_B, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock_addr, user_ip4) + 3), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, ip4.u4_addr8[3], 12), /* 1st_half_of_user_ip4 == expected && */ BPF_LDX_MEM(BPF_H, BPF_REG_7, BPF_REG_6, offsetof(struct bpf_sock_addr, user_ip4)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, ip4.u4_addr16[0], 8), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, ip4.u4_addr16[0], 10), + + /* 2nd_half_of_user_ip4 == expected && */ + BPF_LDX_MEM(BPF_H, BPF_REG_7, BPF_REG_6, + offsetof(struct bpf_sock_addr, user_ip4) + 2), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, ip4.u4_addr16[1], 8), /* whole_user_ip4 == expected) { */ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, |