Date: Sat, 14 Aug 2010 19:36:49 +0000 (UTC) From: Andre Oppermann <andre@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r211312 - stable/8/sys/netinet Message-ID: <201008141936.o7EJanQS036875@svn.freebsd.org>
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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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