diff options
| -rw-r--r-- | net/dccp/input.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/net/dccp/input.c b/net/dccp/input.c index decf2f21149..dacd4fd3c63 100644 --- a/net/dccp/input.c +++ b/net/dccp/input.c @@ -22,16 +22,27 @@ /* rate-limit for syncs in reply to sequence-invalid packets; RFC 4340, 7.5.4 */ int sysctl_dccp_sync_ratelimit __read_mostly = HZ / 8; -static void dccp_fin(struct sock *sk, struct sk_buff *skb) +static void dccp_enqueue_skb(struct sock *sk, struct sk_buff *skb) { - sk->sk_shutdown |= RCV_SHUTDOWN; - sock_set_flag(sk, SOCK_DONE); __skb_pull(skb, dccp_hdr(skb)->dccph_doff * 4); __skb_queue_tail(&sk->sk_receive_queue, skb); skb_set_owner_r(skb, sk); sk->sk_data_ready(sk, 0); } +static void dccp_fin(struct sock *sk, struct sk_buff *skb) +{ + /* + * On receiving Close/CloseReq, both RD/WR shutdown are performed. + * RFC 4340, 8.3 says that we MAY send further Data/DataAcks after + * receiving the closing segment, but there is no guarantee that such + * data will be processed at all. + */ + sk->sk_shutdown = SHUTDOWN_MASK; + sock_set_flag(sk, SOCK_DONE); + dccp_enqueue_skb(sk, skb); +} + static int dccp_rcv_close(struct sock *sk, struct sk_buff *skb) { int queued = 0; @@ -282,10 +293,7 @@ static int __dccp_rcv_established(struct sock *sk, struct sk_buff *skb, * - sk_shutdown == RCV_SHUTDOWN, use Code 1, "Not Listening" * - sk_receive_queue is full, use Code 2, "Receive Buffer" */ - __skb_pull(skb, dh->dccph_doff * 4); - __skb_queue_tail(&sk->sk_receive_queue, skb); - skb_set_owner_r(skb, sk); - sk->sk_data_ready(sk, 0); + dccp_enqueue_skb(sk, skb); return 0; case DCCP_PKT_ACK: goto discard; |