X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/2d21ac55c334faf3a56e5634905ed6987fc787d4..ca66cea69e6e866fd781ae2260d9474bdd48f2ca:/bsd/netinet/tcp_timer.c

diff --git a/bsd/netinet/tcp_timer.c b/bsd/netinet/tcp_timer.c
index 739e2816b..e8de99b71 100644
--- a/bsd/netinet/tcp_timer.c
+++ b/bsd/netinet/tcp_timer.c
@@ -358,7 +358,7 @@ static int bg_cnt = 0;
 void
 tcp_slowtimo()
 {
-	struct inpcb *inp;
+	struct inpcb *inp, *nxt;
 	struct tcpcb *tp;
 	struct socket *so;
 	int i;
@@ -537,12 +537,12 @@ twunlock:
 	}
 
 
-    	LIST_FOREACH(inp, &tcb, inp_list) {
+    	LIST_FOREACH_SAFE(inp, &tcb, inp_list, nxt) {
 		tcp_garbage_collect(inp, 0);
 	}
 
 	/* Now cleanup the time wait ones */
-    	LIST_FOREACH(inp, &time_wait_slots[cur_tw_slot], inp_list) {
+    	LIST_FOREACH_SAFE(inp, &time_wait_slots[cur_tw_slot], inp_list, nxt) {
 		tcp_garbage_collect(inp, 1);
 	}
 
@@ -729,15 +729,15 @@ tcp_timers(tp, timer)
 		 * growth is 2 mss.  We don't allow the threshhold
 		 * to go below this.)
 		 */
-		{
-		u_int win = min(tp->snd_wnd, tp->snd_cwnd) / 2 / tp->t_maxseg;
-		if (win < 2)
-			win = 2;
-		tp->snd_cwnd = tp->t_maxseg;
-		tp->snd_ssthresh = win * tp->t_maxseg;
-		tp->t_bytes_acked = 0;
-		tp->t_dupacks = 0;
-		tp->t_unacksegs = 0;
+		if (tp->t_state >=  TCPS_ESTABLISHED) {
+			u_int win = min(tp->snd_wnd, tp->snd_cwnd) / 2 / tp->t_maxseg;
+			if (win < 2)
+				win = 2;
+			tp->snd_cwnd = tp->t_maxseg;
+			tp->snd_ssthresh = win * tp->t_maxseg;
+			tp->t_bytes_acked = 0;
+			tp->t_dupacks = 0;
+			tp->t_unacksegs = 0;
 		}
 		EXIT_FASTRECOVERY(tp);
 		(void) tcp_output(tp);