diff options
| author | Eric Dumazet <edumazet@google.com> | 2021-10-27 13:19:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-08 17:26:35 +0100 |
| commit | fd2b2dab6f5b82ed8fb76118f095fcd56b626e3f (patch) | |
| tree | e96ae2b48dee77a463f81c8eb95cd7bb184cd8b7 | |
| parent | 68342755b9b2b49cc84e7191f04a16db29c481f0 (diff) | |
| download | aa-fd2b2dab6f5b82ed8fb76118f095fcd56b626e3f.tar.gz | |
tcp: cleanup tcp_remove_empty_skb() use
[ Upstream commit 27728ba80f1eb279b209bbd5922fdeebe52d9e30 ]
All tcp_remove_empty_skb() callers now use tcp_write_queue_tail()
for the skb argument, we can therefore factorize code.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 72377ab2d671 ("mptcp: more conservative check for zero probes")
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | include/net/tcp.h | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 9 | ||||
| -rw-r--r-- | net/mptcp/protocol.c | 4 |
3 files changed, 8 insertions, 7 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index e93a48edf438c0..3aee02ad0116b5 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -314,7 +314,7 @@ void tcp_shutdown(struct sock *sk, int how); int tcp_v4_early_demux(struct sk_buff *skb); int tcp_v4_rcv(struct sk_buff *skb); -void tcp_remove_empty_skb(struct sock *sk, struct sk_buff *skb); +void tcp_remove_empty_skb(struct sock *sk); int tcp_v4_tw_remember_stamp(struct inet_timewait_sock *tw); int tcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size); int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size); diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 2115a0e5c98f7e..6dcb77a2bde607 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -953,8 +953,10 @@ int tcp_send_mss(struct sock *sk, int *size_goal, int flags) * importantly be able to generate EPOLLOUT for Edge Trigger epoll() * users. */ -void tcp_remove_empty_skb(struct sock *sk, struct sk_buff *skb) +void tcp_remove_empty_skb(struct sock *sk) { + struct sk_buff *skb = tcp_write_queue_tail(sk); + if (skb && TCP_SKB_CB(skb)->seq == TCP_SKB_CB(skb)->end_seq) { tcp_unlink_write_queue(skb, sk); if (tcp_write_queue_empty(sk)) @@ -1107,7 +1109,7 @@ out: return copied; do_error: - tcp_remove_empty_skb(sk, tcp_write_queue_tail(sk)); + tcp_remove_empty_skb(sk); if (copied) goto out; out_err: @@ -1429,8 +1431,7 @@ out_nopush: return copied + copied_syn; do_error: - skb = tcp_write_queue_tail(sk); - tcp_remove_empty_skb(sk, skb); + tcp_remove_empty_skb(sk); if (copied + copied_syn) goto out; diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 82b1583f709d39..b9613e02e2de10 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -1338,7 +1338,7 @@ alloc_skb: u64 snd_una = READ_ONCE(msk->snd_una); if (snd_una != msk->snd_nxt) { - tcp_remove_empty_skb(ssk, tcp_write_queue_tail(ssk)); + tcp_remove_empty_skb(ssk); return 0; } @@ -1354,7 +1354,7 @@ alloc_skb: copy = min_t(size_t, copy, info->limit - info->sent); if (!sk_wmem_schedule(ssk, copy)) { - tcp_remove_empty_skb(ssk, tcp_write_queue_tail(ssk)); + tcp_remove_empty_skb(ssk); return -ENOMEM; } |