diff options
| author | Florent Revest <revest@chromium.org> | 2021-02-10 14:14:03 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-02-12 04:44:41 +0300 |
| commit | c5dbb89fc2ac013afe67b9e4fcb3743c02b567cd (patch) | |
| tree | 717c986e70611b002a57850957d7132121c7ec9f /net/core | |
| parent | 07881ccbf40cc7893869f3f170301889ddca54ac (diff) | |
| download | linux-c5dbb89fc2ac013afe67b9e4fcb3743c02b567cd.tar.xz | |
bpf: Expose bpf_get_socket_cookie to tracing programs
This needs a new helper that:
- can work in a sleepable context (using sock_gen_cookie)
- takes a struct sock pointer and checks that it's not NULL
Signed-off-by: Florent Revest <revest@chromium.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: KP Singh <kpsingh@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210210111406.785541-2-revest@chromium.org
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/filter.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index e15d4741719a..57aaed478362 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -4631,6 +4631,18 @@ static const struct bpf_func_proto bpf_get_socket_cookie_sock_proto = { .arg1_type = ARG_PTR_TO_CTX, }; +BPF_CALL_1(bpf_get_socket_ptr_cookie, struct sock *, sk) +{ + return sk ? sock_gen_cookie(sk) : 0; +} + +const struct bpf_func_proto bpf_get_socket_ptr_cookie_proto = { + .func = bpf_get_socket_ptr_cookie, + .gpl_only = false, + .ret_type = RET_INTEGER, + .arg1_type = ARG_PTR_TO_BTF_ID_SOCK_COMMON, +}; + BPF_CALL_1(bpf_get_socket_cookie_sock_ops, struct bpf_sock_ops_kern *, ctx) { return __sock_gen_cookie(ctx->sk); |