From 469d80a93026540ace538ac145d8829455b9e119 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Mon, 19 Oct 1992 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1992-10-19

---
 pc/main.c        | 10 +++++++---
 port/tcpoutput.c | 11 +++++++----
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/pc/main.c b/pc/main.c
index 230a7de95cfd05d4c5d511c99ca037b62e325ccb..42ef236ae1828334e904e68ad7f916ff9e7cb226 100644
--- a/pc/main.c
+++ b/pc/main.c
@@ -242,27 +242,31 @@ confinit(void)
 	 *  size the non-standard memory
 	 */
 	x = 0x12345678;
-	for(i=1; i<16; i++){
+	for(i=2; i<17; i++){
 		/*
 		 *  write the word
 		 */
 		l = (long*)(KZERO|(i*MB));
+		l--;
 		*l = x;
 		/*
 		 *  take care of wraps
 		 */
-		for(j = 0; j < i; j++){
+		for(j = 1; j < i; j++){
 			l = (long*)(KZERO|(j*MB));
-			*l = 0;
+			l--;
+			*l = ~x;
 		}
 		/*
 		 *  check
 		 */
 		l = (long*)(KZERO|(i*MB));
+		l--;
 		if(*l != x)
 			break;
 		x += 0x3141526;
 	}
+	i--;
 	conf.base1 = 1*MB;
 	conf.npage1 = (i*MB - conf.base1)/BY2PG;
 	conf.npage = conf.npage0 + conf.npage1;
diff --git a/port/tcpoutput.c b/port/tcpoutput.c
index 604de235639ca5e4d6c1c4ef4b8e52d31b825688..bbb1f7ee60ef5fcb87b5451289f506914e517077 100644
--- a/port/tcpoutput.c
+++ b/port/tcpoutput.c
@@ -45,8 +45,12 @@ tcpoutput(Ipconv *s)
 		 * window probes to one
 		 */
 		if(tcb->snd.wnd == 0){
-			if(sent != 0)
-				break;
+			if(sent != 0) {
+				if (tcb->flags&FORCE)
+						tcb->snd.ptr = tcb->snd.una;
+				else
+					break;
+			}
 			usable = 1;
 		}
 		else {
@@ -176,11 +180,10 @@ tcptimeout(void *arg)
 
 	s = (Ipconv *)arg;
 	tcb = &s->tcpctl;
-
 	switch(tcb->state){
 	default:
 		tcb->backoff++;
-		if (tcb->backoff >= MAXBACKOFF) {
+		if (tcb->backoff >= MAXBACKOFF && tcb->snd.wnd > 0) {
 			localclose(s, Etimedout);
 			break;
 		}