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| author |   Hengqi Chen <hengqi.chen@gmail.com> | 2021-10-21 21:47:51 +0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-10-21 15:11:06 -0700 |
| commit | 9eeb3aa33ae005526f672b394c1791578463513f (patch) | |
| tree | 0c70fe4027644192a334d3bd60bbbcb8e4f7758d /kernel/trace/bpf_trace.c | |
| parent | samples: bpf: Suppress readelf stderr when probing for BTF support (diff) | |
| download | linux-dev-9eeb3aa33ae005526f672b394c1791578463513f.tar.xz linux-dev-9eeb3aa33ae005526f672b394c1791578463513f.zip | |
bpf: Add bpf_skc_to_unix_sock() helper
The helper is used in tracing programs to cast a socket
pointer to a unix_sock pointer.
The return value could be NULL if the casting is illegal.
Suggested-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211021134752.1223426-2-hengqi.chen@gmail.com
Diffstat (limited to 'kernel/trace/bpf_trace.c')
| -rw-r--r-- | kernel/trace/bpf_trace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 6b3153841a33..cbcd0d6fca7c 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -1608,6 +1608,8 @@ tracing_prog_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) return &bpf_skc_to_tcp_request_sock_proto; case BPF_FUNC_skc_to_udp6_sock: return &bpf_skc_to_udp6_sock_proto; + case BPF_FUNC_skc_to_unix_sock: + return &bpf_skc_to_unix_sock_proto; case BPF_FUNC_sk_storage_get: return &bpf_sk_storage_get_tracing_proto; case BPF_FUNC_sk_storage_delete: |