Author: andre
Date: Sat Aug 14 19:36:48 2010
New Revision: 211312
URL: http://svn.freebsd.org/changeset/base/211312
Log:
MFC r210666:
Fix a bug in syncache where the initial CWND for new incoming connections
was limited to one segment under the faulty assumption of a retransmit.
Due to this the opportunity to initialize the increased congestion window
according to RFC3390 was missed.
Modified:
stable/8/sys/netinet/tcp_syncache.c
Modified: stable/8/sys/netinet/tcp_syncache.c
==============================================================================
--- stable/8/sys/netinet/tcp_syncache.c Sat Aug 14 18:58:05 2010
(r211311)
+++ stable/8/sys/netinet/tcp_syncache.c Sat Aug 14 19:36:48 2010
(r211312)
@@ -804,8 +804,9 @@ syncache_socket(struct syncache *sc, str
/*
* If the SYN,ACK was retransmitted, reset cwnd to 1 segment.
+ * NB: sc_rxmits counts all SYN,ACK transmits, not just retransmits.
*/
- if (sc->sc_rxmits)
+ if (sc->sc_rxmits > 1)
tp->snd_cwnd = tp->t_maxseg;
tcp_timer_activate(tp, TT_KEEP, tcp_keepinit);
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