diff mbox series

[net,1/2] igmp: fix incorrect unsolicit report count when join group

Message ID 1535537171-24533-3-git-send-email-liuhangbin@gmail.com
State Not Applicable, archived
Delegated to: David Miller
Headers show
Series [net,1/2] igmp: fix incorrect unsolicit report count when join group | expand

Commit Message

Hangbin Liu Aug. 29, 2018, 10:06 a.m. UTC
We should not start timer if im->unsolicit_count equal to 0 after decrease.
Or we will send one more unsolicit report message. i.e. 3 instead of 2 by
default.

Fixes: 1da177e4c3f41 ("Linux-2.6.12-rc2")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
 net/ipv4/igmp.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index cf75f89..deb1f82 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -820,10 +820,9 @@  static void igmp_timer_expire(struct timer_list *t)
 	spin_lock(&im->lock);
 	im->tm_running = 0;
 
-	if (im->unsolicit_count) {
-		im->unsolicit_count--;
+	if (im->unsolicit_count && --im->unsolicit_count)
 		igmp_start_timer(im, unsolicited_report_interval(in_dev));
-	}
+
 	im->reporter = 1;
 	spin_unlock(&im->lock);