Author: andre
Date: Sun Oct 28 19:20:23 2012
New Revision: 242263
URL: http://svn.freebsd.org/changeset/base/242263
Log:
Add SACK_PERMIT to the list of TCP options that are switched off after
retransmitting a SYN three times.
MFC after: 2 weeks
Modified:
head/sys/netinet/tcp_timer.c
Modified: head/sys/netinet/tcp_timer.c
==============================================================================
--- head/sys/netinet/tcp_timer.c Sun Oct 28 19:16:22 2012
(r242262)
+++ head/sys/netinet/tcp_timer.c Sun Oct 28 19:20:23 2012
(r242263)
@@ -585,7 +585,7 @@ tcp_timer_rexmt(void * xtp)
* unknown-to-them TCP options.
*/
if ((tp->t_state == TCPS_SYN_SENT) && (tp->t_rxtshift == 3))
- tp->t_flags &= ~(TF_REQ_SCALE|TF_REQ_TSTMP);
+ tp->t_flags &= ~(TF_REQ_SCALE|TF_REQ_TSTMP|TF_SACK_PERMIT);
/*
* If we backed off this far, our srtt estimate is probably bogus.
* Clobber it so we'll take the next rtt measurement as our srtt;
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