diff options
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 4a8ec457310f..d09203c63264 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c | |||
| @@ -274,13 +274,6 @@ static void tcp_v4_mtu_reduced(struct sock *sk) | |||
| 274 | struct inet_sock *inet = inet_sk(sk); | 274 | struct inet_sock *inet = inet_sk(sk); |
| 275 | u32 mtu = tcp_sk(sk)->mtu_info; | 275 | u32 mtu = tcp_sk(sk)->mtu_info; |
| 276 | 276 | ||
| 277 | /* We are not interested in TCP_LISTEN and open_requests (SYN-ACKs | ||
| 278 | * send out by Linux are always <576bytes so they should go through | ||
| 279 | * unfragmented). | ||
| 280 | */ | ||
| 281 | if (sk->sk_state == TCP_LISTEN) | ||
| 282 | return; | ||
| 283 | |||
| 284 | dst = inet_csk_update_pmtu(sk, mtu); | 277 | dst = inet_csk_update_pmtu(sk, mtu); |
| 285 | if (!dst) | 278 | if (!dst) |
| 286 | return; | 279 | return; |
| @@ -408,6 +401,13 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) | |||
| 408 | goto out; | 401 | goto out; |
| 409 | 402 | ||
| 410 | if (code == ICMP_FRAG_NEEDED) { /* PMTU discovery (RFC1191) */ | 403 | if (code == ICMP_FRAG_NEEDED) { /* PMTU discovery (RFC1191) */ |
| 404 | /* We are not interested in TCP_LISTEN and open_requests | ||
| 405 | * (SYN-ACKs send out by Linux are always <576bytes so | ||
| 406 | * they should go through unfragmented). | ||
| 407 | */ | ||
| 408 | if (sk->sk_state == TCP_LISTEN) | ||
| 409 | goto out; | ||
| 410 | |||
| 411 | tp->mtu_info = info; | 411 | tp->mtu_info = info; |
| 412 | if (!sock_owned_by_user(sk)) { | 412 | if (!sock_owned_by_user(sk)) { |
| 413 | tcp_v4_mtu_reduced(sk); | 413 | tcp_v4_mtu_reduced(sk); |
