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| author | Cong Wang <cong.wang@bytedance.com> | 2021-03-31 05:32:32 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-04-01 20:56:14 +0300 |
| commit | d7f571188ecf25c244789b883c878ec7c64b5b08 (patch) | |
| tree | f7180f3bdac5f80fbac0000a3927f05fb431013c /include/net/udp.h | |
| parent | 8a59f9d1e3d4340659fdfee8879dc09a6f2546e1 (diff) | |
| download | linux-d7f571188ecf25c244789b883c878ec7c64b5b08.tar.xz | |
udp: Implement ->read_sock() for sockmap
This is similar to tcp_read_sock(), except we do not need
to worry about connections, we just need to retrieve skb
from UDP receive queue.
Note, the return value of ->read_sock() is unused in
sk_psock_verdict_data_ready(), and UDP still does not
support splice() due to lack of ->splice_read(), so users
can not reach udp_read_sock() directly.
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210331023237.41094-12-xiyou.wangcong@gmail.com
Diffstat (limited to 'include/net/udp.h')
| -rw-r--r-- | include/net/udp.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/net/udp.h b/include/net/udp.h index df7cc1edc200..347b62a753c3 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -329,6 +329,8 @@ struct sock *__udp6_lib_lookup(struct net *net, struct sk_buff *skb); struct sock *udp6_lib_lookup_skb(const struct sk_buff *skb, __be16 sport, __be16 dport); +int udp_read_sock(struct sock *sk, read_descriptor_t *desc, + sk_read_actor_t recv_actor); /* UDP uses skb->dev_scratch to cache as much information as possible and avoid * possibly multiple cache miss on dequeue() |