diff options
| author | Cong Wang <cong.wang@bytedance.com> | 2021-10-08 23:33:05 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-10-26 22:29:33 +0300 |
| commit | af493388950b6ea3a86f860cfaffab137e024fc8 (patch) | |
| tree | 455eada3764f5a609fca659442e3cc5a43e4d7dd /net/unix/unix_bpf.c | |
| parent | fb4e0a5e73d4bb5ab69b7905abd2ec3b580e9b59 (diff) | |
| download | linux-af493388950b6ea3a86f860cfaffab137e024fc8.tar.xz | |
net: Implement ->sock_is_readable() for UDP and AF_UNIX
Yucong noticed we can't poll() sockets in sockmap even
when they are the destination sockets of redirections.
This is because we never poll any psock queues in ->poll(),
except for TCP. With ->sock_is_readable() now we can
overwrite >sock_is_readable(), invoke and implement it for
both UDP and AF_UNIX sockets.
Reported-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211008203306.37525-4-xiyou.wangcong@gmail.com
Diffstat (limited to 'net/unix/unix_bpf.c')
| -rw-r--r-- | net/unix/unix_bpf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/unix/unix_bpf.c b/net/unix/unix_bpf.c index b927e2baae50..452376c6f419 100644 --- a/net/unix/unix_bpf.c +++ b/net/unix/unix_bpf.c @@ -102,6 +102,7 @@ static void unix_dgram_bpf_rebuild_protos(struct proto *prot, const struct proto *prot = *base; prot->close = sock_map_close; prot->recvmsg = unix_bpf_recvmsg; + prot->sock_is_readable = sk_msg_is_readable; } static void unix_stream_bpf_rebuild_protos(struct proto *prot, @@ -110,6 +111,7 @@ static void unix_stream_bpf_rebuild_protos(struct proto *prot, *prot = *base; prot->close = sock_map_close; prot->recvmsg = unix_bpf_recvmsg; + prot->sock_is_readable = sk_msg_is_readable; prot->unhash = sock_map_unhash; } |