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For retransmits of SYN|ACK from the syncache use the slightly more

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aggressive special tcp_syn_backoff[] retransmit schedule instead of
the normal tcp_backoff[] schedule for established connections.

MFC after:	2 weeks
This commit is contained in:
Andre Oppermann 2012-10-28 19:02:07 +00:00
parent f4748ef5fb
commit 024fd5b6bb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=242261
2 changed files with 2 additions and 1 deletions
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2
sys/netinet/tcp_syncache.c
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@ -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;

1
sys/netinet/tcp_timer.h
View File

@ -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;