From ff06525fcb8ae3c302ac1319bf6c07c026dea964 Mon Sep 17 00:00:00 2001 From: Hangbin Liu Date: Wed, 29 Aug 2018 18:06:10 +0800 Subject: [PATCH] igmp: fix incorrect unsolicit report count after link down and up After link down and up, i.e. when call ip_mc_up(), we doesn't init im->unsolicit_count. So after igmp_timer_expire(), we will not start timer again and only send one unsolicit report at last. Fix it by initializing im->unsolicit_count in igmp_group_added(), so we can respect igmp robustness value. Fixes: 24803f38a5c0b ("igmp: do not remove igmp souce list info when set link down") Signed-off-by: Hangbin Liu Signed-off-by: David S. Miller --- net/ipv4/igmp.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index deb1f8274d71..4da39446da2d 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -1307,6 +1307,8 @@ static void igmp_group_added(struct ip_mc_list *im) if (in_dev->dead) return; + + im->unsolicit_count = net->ipv4.sysctl_igmp_qrv; if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev)) { spin_lock_bh(&im->lock); igmp_start_timer(im, IGMP_INITIAL_REPORT_DELAY); @@ -1390,9 +1392,6 @@ static void __ip_mc_inc_group(struct in_device *in_dev, __be32 addr, unsigned int mode) { struct ip_mc_list *im; -#ifdef CONFIG_IP_MULTICAST - struct net *net = dev_net(in_dev->dev); -#endif ASSERT_RTNL(); @@ -1419,7 +1418,6 @@ static void __ip_mc_inc_group(struct in_device *in_dev, __be32 addr, spin_lock_init(&im->lock); #ifdef CONFIG_IP_MULTICAST timer_setup(&im->timer, igmp_timer_expire, 0); - im->unsolicit_count = net->ipv4.sysctl_igmp_qrv; #endif im->next_rcu = in_dev->mc_list; -- 2.30.2