Author: peter
Date: Wed Aug 26 19:45:17 2009
New Revision: 196561
URL: http://svn.freebsd.org/changeset/base/196561
Log:
MFC r194304: Fix ticks overflow in the handling of t_badtrxtwin.
Modified:
stable/7/sys/netinet/tcp_input.c
Modified: stable/7/sys/netinet/tcp_input.c
==============================================================================
--- stable/7/sys/netinet/tcp_input.c Wed Aug 26 14:32:37 2009
(r196560)
+++ stable/7/sys/netinet/tcp_input.c Wed Aug 26 19:45:17 2009
(r196561)
@@ -1030,7 +1030,7 @@ tcp_do_segment(struct mbuf *m, struct tc
* "bad retransmit" recovery.
*/
if (tp->t_rxtshift == 1 &&
- ticks < tp->t_badrxtwin) {
+ (int)(ticks - tp->t_badrxtwin) < 0) {
++tcpstat.tcps_sndrexmitbad;
tp->snd_cwnd = tp->snd_cwnd_prev;
tp->snd_ssthresh =
@@ -1961,7 +1961,7 @@ process_ACK:
* original cwnd and ssthresh, and proceed to transmit where
* we left off.
*/
- if (tp->t_rxtshift == 1 && ticks < tp->t_badrxtwin) {
+ if (tp->t_rxtshift == 1 && (int)(ticks - tp->t_badrxtwin) < 0) {
++tcpstat.tcps_sndrexmitbad;
tp->snd_cwnd = tp->snd_cwnd_prev;
tp->snd_ssthresh = tp->snd_ssthresh_prev;
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