summaryrefslogtreecommitdiff
path: root/net/ipv4/inet_connection_sock.c
diff options
context:
space:
mode:
authorEric Dumazet <edumazet@google.com>2015-03-18 04:32:30 +0300
committerDavid S. Miller <davem@davemloft.net>2015-03-18 05:01:56 +0300
commite3d95ad7da4f8955599f0786d7c70497c0aaf8c9 (patch)
treec427b35237fcb5ee29cc973d96c1d8b893bb7491 /net/ipv4/inet_connection_sock.c
parent9439ce00f208d95703a6725e4ea986dd90e37ffd (diff)
downloadlinux-e3d95ad7da4f8955599f0786d7c70497c0aaf8c9.tar.xz
inet: avoid fastopen lock for regular accept()
It is not because a TCP listener is FastOpen ready that all incoming sockets actually used FastOpen. Avoid taking queue->fastopenq->lock if not needed. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_connection_sock.c')
-rw-r--r--net/ipv4/inet_connection_sock.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 741f0d96a7f7..f0f91858aecf 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -293,8 +293,8 @@ struct sock *inet_csk_accept(struct sock *sk, int flags, int *err)
{
struct inet_connection_sock *icsk = inet_csk(sk);
struct request_sock_queue *queue = &icsk->icsk_accept_queue;
- struct sock *newsk;
struct request_sock *req;
+ struct sock *newsk;
int error;
lock_sock(sk);
@@ -323,7 +323,9 @@ struct sock *inet_csk_accept(struct sock *sk, int flags, int *err)
newsk = req->sk;
sk_acceptq_removed(sk);
- if (sk->sk_protocol == IPPROTO_TCP && queue->fastopenq != NULL) {
+ if (sk->sk_protocol == IPPROTO_TCP &&
+ tcp_rsk(req)->tfo_listener &&
+ queue->fastopenq) {
spin_lock_bh(&queue->fastopenq->lock);
if (tcp_rsk(req)->tfo_listener) {
/* We are still waiting for the final ACK from 3WHS