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| author | Stanislav Fomichev <sdf@google.com> | 2019-07-15 19:39:55 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-07-16 00:15:53 +0300 |
| commit | 7dd8d6119d481da1c4619eb7d8cfef33edfbee81 (patch) | |
| tree | 30553573701ad411a3fd62a0ee5e0a914ee7ee32 | |
| parent | 8b45063c8584b3e6caff0b109dd0f47b35487aba (diff) | |
| download | linux-7dd8d6119d481da1c4619eb7d8cfef33edfbee81.tar.xz | |
selftests/bpf: add selftests for wide loads
Mirror existing wide store tests with wide loads. The only significant
difference is expected error string.
Cc: Yonghong Song <yhs@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/wide_access.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/wide_access.c b/tools/testing/selftests/bpf/verifier/wide_access.c index 3ac97328432f..ccade9312d21 100644 --- a/tools/testing/selftests/bpf/verifier/wide_access.c +++ b/tools/testing/selftests/bpf/verifier/wide_access.c @@ -34,3 +34,40 @@ BPF_SOCK_ADDR_STORE(msg_src_ip6, 3, REJECT, "invalid bpf_context access off=56 size=8"), #undef BPF_SOCK_ADDR_STORE + +#define BPF_SOCK_ADDR_LOAD(field, off, res, err) \ +{ \ + "wide load from bpf_sock_addr." #field "[" #off "]", \ + .insns = { \ + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, \ + offsetof(struct bpf_sock_addr, field[off])), \ + BPF_MOV64_IMM(BPF_REG_0, 1), \ + BPF_EXIT_INSN(), \ + }, \ + .result = res, \ + .prog_type = BPF_PROG_TYPE_CGROUP_SOCK_ADDR, \ + .expected_attach_type = BPF_CGROUP_UDP6_SENDMSG, \ + .errstr = err, \ +} + +/* user_ip6[0] is u64 aligned */ +BPF_SOCK_ADDR_LOAD(user_ip6, 0, ACCEPT, + NULL), +BPF_SOCK_ADDR_LOAD(user_ip6, 1, REJECT, + "invalid bpf_context access off=12 size=8"), +BPF_SOCK_ADDR_LOAD(user_ip6, 2, ACCEPT, + NULL), +BPF_SOCK_ADDR_LOAD(user_ip6, 3, REJECT, + "invalid bpf_context access off=20 size=8"), + +/* msg_src_ip6[0] is _not_ u64 aligned */ +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 0, REJECT, + "invalid bpf_context access off=44 size=8"), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 1, ACCEPT, + NULL), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 2, REJECT, + "invalid bpf_context access off=52 size=8"), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 3, REJECT, + "invalid bpf_context access off=56 size=8"), + +#undef BPF_SOCK_ADDR_LOAD |