diff options
| author |   Eric Dumazet <edumazet@google.com> | 2023-08-04 14:46:16 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2023-08-06 08:24:56 +0100 |
| commit | 6e97ba552b8d3dd074a28b8600740b8bed42267b (patch) | |
| tree | caae5595891ec6a1e0d7d138186032e3d909eb96 /net/ipv4/tcp_minisocks.c | |
| parent | tcp: set TCP_LINGER2 locklessly (diff) | |
| download | wireguard-linux-6e97ba552b8d3dd074a28b8600740b8bed42267b.tar.xz wireguard-linux-6e97ba552b8d3dd074a28b8600740b8bed42267b.zip | |
tcp: set TCP_DEFER_ACCEPT locklessly
rskq_defer_accept field can be read/written without
the need of holding the socket lock.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_minisocks.c')
| -rw-r--r-- | net/ipv4/tcp_minisocks.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index ddba3b67f7c8..13ee12983c42 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -792,7 +792,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb, return sk; /* While TCP_DEFER_ACCEPT is active, drop bare ACK. */ - if (req->num_timeout < inet_csk(sk)->icsk_accept_queue.rskq_defer_accept && + if (req->num_timeout < READ_ONCE(inet_csk(sk)->icsk_accept_queue.rskq_defer_accept) && TCP_SKB_CB(skb)->end_seq == tcp_rsk(req)->rcv_isn + 1) { inet_rsk(req)->acked = 1; __NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPDEFERACCEPTDROP); |