X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/9bccf70c0258c7cac2dcb80011b2a964d884c552..5eebf7385fedb1517b66b53c28e5aa6bb0a2be50:/bsd/netinet/tcp_timer.c

diff --git a/bsd/netinet/tcp_timer.c b/bsd/netinet/tcp_timer.c
index e0c303b40..a99efeea7 100644
--- a/bsd/netinet/tcp_timer.c
+++ b/bsd/netinet/tcp_timer.c
@@ -90,6 +90,13 @@
 #define DBG_FNC_TCP_FAST	NETDBG_CODE(DBG_NETTCP, (5 << 8))
 #define DBG_FNC_TCP_SLOW	NETDBG_CODE(DBG_NETTCP, (5 << 8) | 1)
 
+/*
+ * NOTE - WARNING
+ *
+ *
+ * 
+ *
+ */
 static int
 sysctl_msec_to_ticks SYSCTL_HANDLER_ARGS
 {
@@ -306,6 +313,10 @@ tpgone:
 #endif
 		ipnxt = ip->inp_list.le_next;
 		tp = intotcpcb(ip);
+		if (tp == NULL) { /* tp already closed, remove from list */
+			LIST_REMOVE(ip, inp_list);
+			continue; 
+		}
 		if (tp->t_timer[TCPT_2MSL] >= N_TIME_WAIT_SLOTS) {
 		    tp->t_timer[TCPT_2MSL] -= N_TIME_WAIT_SLOTS;
 		    tp->t_rcvtime += N_TIME_WAIT_SLOTS;
@@ -357,6 +368,10 @@ tcp_timers(tp, timer)
 	struct socket *so_tmp;
 	struct tcptemp *t_template;
 
+#if TCPDEBUG
+	int ostate;
+#endif
+
 #if INET6
 	int isipv6 = (tp->t_inpcb->inp_vflag & INP_IPV4) == 0;
 #endif /* INET6 */
@@ -534,7 +549,7 @@ tcp_timers(tp, timer)
 		if ((always_keepalive ||
 		    tp->t_inpcb->inp_socket->so_options & SO_KEEPALIVE) &&
 		    tp->t_state <= TCPS_CLOSING) {
-		    	if (tp->t_rcvtime >= tcp_keepidle + tcp_maxidle)
+		    	if (tp->t_rcvtime >= TCP_KEEPIDLE(tp) + tcp_maxidle)
 				goto dropit;
 			/*
 			 * Send a packet designed to force a response
@@ -558,7 +573,7 @@ tcp_timers(tp, timer)
 			}
 			tp->t_timer[TCPT_KEEP] = tcp_keepintvl;
 		} else
-			tp->t_timer[TCPT_KEEP] = tcp_keepidle;
+			tp->t_timer[TCPT_KEEP] = TCP_KEEPIDLE(tp);
 		break;
 
 #if TCPDEBUG