Date: Sun, 28 Oct 2012 19:02:07 +0000 (UTC) From: Andre Oppermann <andre@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r242261 - head/sys/netinet Message-ID: <201210281902.q9SJ272D078237@svn.freebsd.org>
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Author: andre Date: Sun Oct 28 19:02:07 2012 New Revision: 242261 URL: http://svn.freebsd.org/changeset/base/242261 Log: For retransmits of SYN|ACK from the syncache use the slightly more aggressive special tcp_syn_backoff[] retransmit schedule instead of the normal tcp_backoff[] schedule for established connections. MFC after: 2 weeks Modified: head/sys/netinet/tcp_syncache.c head/sys/netinet/tcp_timer.h Modified: head/sys/netinet/tcp_syncache.c ============================================================================== --- head/sys/netinet/tcp_syncache.c Sun Oct 28 18:56:57 2012 (r242260) +++ head/sys/netinet/tcp_syncache.c Sun Oct 28 19:02:07 2012 (r242261) @@ -391,7 +391,7 @@ static void syncache_timeout(struct syncache *sc, struct syncache_head *sch, int docallout) { sc->sc_rxttime = ticks + - TCPTV_RTOBASE * (tcp_backoff[sc->sc_rxmits]); + TCPTV_RTOBASE * (tcp_syn_backoff[sc->sc_rxmits]); sc->sc_rxmits++; if (TSTMP_LT(sc->sc_rxttime, sch->sch_nextc)) { sch->sch_nextc = sc->sc_rxttime; Modified: head/sys/netinet/tcp_timer.h ============================================================================== --- head/sys/netinet/tcp_timer.h Sun Oct 28 18:56:57 2012 (r242260) +++ head/sys/netinet/tcp_timer.h Sun Oct 28 19:02:07 2012 (r242261) @@ -170,6 +170,7 @@ extern int tcp_rexmit_slop; extern int tcp_msl; extern int tcp_ttl; /* time to live for TCP segs */ extern int tcp_backoff[]; +extern int tcp_syn_backoff[]; extern int tcp_finwait2_timeout; extern int tcp_fast_finwait2_recycle;
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