Module Name: src
Committed By: martin
Date: Fri Jul 24 07:36:05 UTC 2015
Modified Files:
src/sys/netinet [netbsd-6-1]: tcp_input.c tcp_output.c
Log Message:
Pull up following revision(s) (requested by matt in ticket #1315):
sys/netinet/tcp_output.c: revision 1.184
sys/netinet/tcp_input.c: revision 1.343
If we are sending a window probe and there's unacked data in the
socket, make sure at least the persist timer is running.
Make sure that snd_win doesn't go negative.
To generate a diff of this commit:
cvs rdiff -u -r1.321 -r1.321.8.1 src/sys/netinet/tcp_input.c
cvs rdiff -u -r1.173.8.1 -r1.173.8.2 src/sys/netinet/tcp_output.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/netinet/tcp_input.c
diff -u src/sys/netinet/tcp_input.c:1.321 src/sys/netinet/tcp_input.c:1.321.8.1
--- src/sys/netinet/tcp_input.c:1.321 Wed Jan 11 14:39:08 2012
+++ src/sys/netinet/tcp_input.c Fri Jul 24 07:36:05 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: tcp_input.c,v 1.321 2012/01/11 14:39:08 drochner Exp $ */
+/* $NetBSD: tcp_input.c,v 1.321.8.1 2015/07/24 07:36:05 martin Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -148,7 +148,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tcp_input.c,v 1.321 2012/01/11 14:39:08 drochner Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcp_input.c,v 1.321.8.1 2015/07/24 07:36:05 martin Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@@ -2719,7 +2719,10 @@ after_listen:
tp->t_lastm = NULL;
sbdrop(&so->so_snd, acked);
tp->t_lastoff -= acked;
- tp->snd_wnd -= acked;
+ if (tp->snd_wnd > acked)
+ tp->snd_wnd -= acked;
+ else
+ tp->snd_wnd = 0;
ourfinisacked = 0;
}
sowwakeup(so);
Index: src/sys/netinet/tcp_output.c
diff -u src/sys/netinet/tcp_output.c:1.173.8.1 src/sys/netinet/tcp_output.c:1.173.8.2
--- src/sys/netinet/tcp_output.c:1.173.8.1 Mon Nov 3 23:05:59 2014
+++ src/sys/netinet/tcp_output.c Fri Jul 24 07:36:05 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: tcp_output.c,v 1.173.8.1 2014/11/03 23:05:59 msaitoh Exp $ */
+/* $NetBSD: tcp_output.c,v 1.173.8.2 2015/07/24 07:36:05 martin Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -135,7 +135,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tcp_output.c,v 1.173.8.1 2014/11/03 23:05:59 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tcp_output.c,v 1.173.8.2 2015/07/24 07:36:05 martin Exp $");
#include "opt_inet.h"
#include "opt_ipsec.h"
@@ -1527,14 +1527,24 @@ send:
* of retransmit time.
*/
timer:
- if (TCP_TIMER_ISARMED(tp, TCPT_REXMT) == 0 &&
- ((sack_rxmit && tp->snd_nxt != tp->snd_max) ||
- tp->snd_nxt != tp->snd_una)) {
- if (TCP_TIMER_ISARMED(tp, TCPT_PERSIST)) {
- TCP_TIMER_DISARM(tp, TCPT_PERSIST);
+ if (TCP_TIMER_ISARMED(tp, TCPT_REXMT) == 0) {
+ if ((sack_rxmit && tp->snd_nxt != tp->snd_max)
+ || tp->snd_nxt != tp->snd_una) {
+ if (TCP_TIMER_ISARMED(tp, TCPT_PERSIST)) {
+ TCP_TIMER_DISARM(tp, TCPT_PERSIST);
+ tp->t_rxtshift = 0;
+ }
+ TCP_TIMER_ARM(tp, TCPT_REXMT, tp->t_rxtcur);
+ } else if (len == 0 && so->so_snd.sb_cc > 0
+ && TCP_TIMER_ISARMED(tp, TCPT_PERSIST) == 0) {
+ /*
+ * If we are sending a window probe and there's
+ * unacked data in the socket, make sure at
+ * least the persist timer is running.
+ */
tp->t_rxtshift = 0;
+ tcp_setpersist(tp);
}
- TCP_TIMER_ARM(tp, TCPT_REXMT, tp->t_rxtcur);
}
} else
if (SEQ_GT(tp->snd_nxt + len, tp->snd_max))
