From d9efc2231b28bc199f9de4dd594248b7341188e5 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Fri, 30 Apr 2010 22:41:09 -0400 Subject: [PATCH] sctp: Do not force T3 timer on fast retransmissions. We don't need to force the T3 timer any more and it's actually wrong to do as it causes too long of a delay. The timer will be started if one is not running, but if one is running, we leave it alone. Signed-off-by: Vlad Yasevich --- net/sctp/outqueue.c | 15 +++------------ net/sctp/transport.c | 4 ++-- 2 files changed, 5 insertions(+), 14 deletions(-) diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index 4e551ba8998c..786c4ff97ae4 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -659,14 +659,6 @@ static int sctp_outq_flush_rtx(struct sctp_outq *q, struct sctp_packet *pkt, if (chunk->fast_retransmit == SCTP_NEED_FRTX) chunk->fast_retransmit = SCTP_DONT_FRTX; - /* Force start T3-rtx timer when fast retransmitting - * the earliest outstanding TSN - */ - if (!timer && fast_rtx && - ntohl(chunk->subh.data_hdr->tsn) == - asoc->ctsn_ack_point + 1) - timer = 2; - q->empty = 0; break; } @@ -871,7 +863,7 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout) * sender MUST assure that at least one T3-rtx * timer is running. */ - sctp_transport_reset_timers(transport, 0); + sctp_transport_reset_timers(transport); } break; @@ -924,8 +916,7 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout) rtx_timeout, &start_timer); if (start_timer) - sctp_transport_reset_timers(transport, - start_timer-1); + sctp_transport_reset_timers(transport); /* This can happen on COOKIE-ECHO resend. Only * one chunk can get bundled with a COOKIE-ECHO. @@ -1058,7 +1049,7 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout) list_add_tail(&chunk->transmitted_list, &transport->transmitted); - sctp_transport_reset_timers(transport, 0); + sctp_transport_reset_timers(transport); q->empty = 0; diff --git a/net/sctp/transport.c b/net/sctp/transport.c index be4d63d5a5cc..0ebb97fc98e0 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -195,7 +195,7 @@ static void sctp_transport_destroy(struct sctp_transport *transport) /* Start T3_rtx timer if it is not already running and update the heartbeat * timer. This routine is called every time a DATA chunk is sent. */ -void sctp_transport_reset_timers(struct sctp_transport *transport, int force) +void sctp_transport_reset_timers(struct sctp_transport *transport) { /* RFC 2960 6.3.2 Retransmission Timer Rules * @@ -205,7 +205,7 @@ void sctp_transport_reset_timers(struct sctp_transport *transport, int force) * address. */ - if (force || !timer_pending(&transport->T3_rtx_timer)) + if (!timer_pending(&transport->T3_rtx_timer)) if (!mod_timer(&transport->T3_rtx_timer, jiffies + transport->rto)) sctp_transport_hold(transport);