diff options
Diffstat (limited to 'net/dccp/timer.c')
| -rw-r--r-- | net/dccp/timer.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/dccp/timer.c b/net/dccp/timer.c index aa34b576e228..d7c786608ec6 100644 --- a/net/dccp/timer.c +++ b/net/dccp/timer.c @@ -141,6 +141,17 @@ static void dccp_retransmit_timer(struct sock *sk) { struct inet_connection_sock *icsk = inet_csk(sk); + /* retransmit timer is used for feature negotiation throughout + * connection. In this case, no packet is re-transmitted, but rather an + * ack is generated and pending changes are splaced into its options. + */ + if (sk->sk_send_head == NULL) { + dccp_pr_debug("feat negotiation retransmit timeout %p\n", sk); + if (sk->sk_state == DCCP_OPEN) + dccp_send_ack(sk); + goto backoff; + } + /* * sk->sk_send_head has to have one skb with * DCCP_SKB_CB(skb)->dccpd_type set to one of the retransmittable DCCP @@ -177,6 +188,7 @@ static void dccp_retransmit_timer(struct sock *sk) goto out; } +backoff: icsk->icsk_backoff++; icsk->icsk_retransmits++; |