svn commit: r214918 - head/sys/netinet

[Michael Tuexen]

Author: tuexen
Date: Sun Nov  7 14:39:40 2010
New Revision: 214918
URL: http://svn.freebsd.org/changeset/base/214918

Log:
  Not only stop all timers when entering the SHUTDOWN_SENT state,
  but also when entering the SHUTDOWN_ACK_SEND state.
  
  MFC after: 3 days.

Modified:
  head/sys/netinet/sctp_indata.c
  head/sys/netinet/sctp_input.c
  head/sys/netinet/sctputil.c

Modified: head/sys/netinet/sctp_indata.c
==============================================================================
--- head/sys/netinet/sctp_indata.c	Sun Nov  7 14:28:01 2010	(r214917)
+++ head/sys/netinet/sctp_indata.c	Sun Nov  7 14:39:40 2010	(r214918)
@@ -4369,7 +4369,7 @@ again:
 			SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
 			sctp_send_shutdown_ack(stcb,
 			    stcb->asoc.primary_destination);
-
+			sctp_stop_timers_for_shutdown(stcb);
 			sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNACK,
 			    stcb->sctp_ep, stcb, asoc->primary_destination);
 		}
@@ -5081,7 +5081,7 @@ done_with_it:
 			SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
 			sctp_send_shutdown_ack(stcb,
 			    stcb->asoc.primary_destination);
-
+			sctp_stop_timers_for_shutdown(stcb);
 			sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNACK,
 			    stcb->sctp_ep, stcb, asoc->primary_destination);
 			return;

Modified: head/sys/netinet/sctp_input.c
==============================================================================
--- head/sys/netinet/sctp_input.c	Sun Nov  7 14:28:01 2010	(r214917)
+++ head/sys/netinet/sctp_input.c	Sun Nov  7 14:39:40 2010	(r214918)
@@ -908,9 +908,7 @@ sctp_handle_shutdown(struct sctp_shutdow
 		}
 		SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_ACK_SENT);
 		SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
-		sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, net,
-		    SCTP_FROM_SCTP_INPUT + SCTP_LOC_7);
-		/* start SHUTDOWN timer */
+		sctp_stop_timers_for_shutdown(stcb);
 		sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNACK, stcb->sctp_ep,
 		    stcb, net);
 	}

Modified: head/sys/netinet/sctputil.c
==============================================================================
--- head/sys/netinet/sctputil.c	Sun Nov  7 14:28:01 2010	(r214917)
+++ head/sys/netinet/sctputil.c	Sun Nov  7 14:39:40 2010	(r214918)
@@ -725,6 +725,31 @@ sctp_audit_log(uint8_t ev, uint8_t fd)
 #endif
 
 /*
+ * sctp_stop_timers_for_shutdown() should be called
+ * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
+ * state to make sure that all timers are stopped.
+ */
+void
+sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
+{
+	struct sctp_association *asoc;
+	struct sctp_nets *net;
+
+	asoc = &stcb->asoc;
+
+	(void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
+	(void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
+	(void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
+	(void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
+	(void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
+	(void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
+	TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
+		(void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
+		(void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
+	}
+}
+
+/*
  * a list of sizes based on typical mtu's, used only if next hop size not
  * returned.
  */
@@ -749,26 +774,6 @@ static int sctp_mtu_sizes[] = {
 	65535
 };
 
-void
-sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
-{
-	struct sctp_association *asoc;
-	struct sctp_nets *net;
-
-	asoc = &stcb->asoc;
-
-	(void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
-	(void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
-	(void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
-	(void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
-	(void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
-	(void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
-	TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
-		(void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
-		(void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
-	}
-}
-
 int
 find_next_best_mtu(int totsz)
 {