[PATCH] ipv6: Fix premature timeout for MLDv1 compatibility mode

[Dragos Ilie <dragos.ilie@xxxxxxxxx>]

The timeout for MLDv1 compatibility mode is now calculated according
to Section 9.2 in RFC 3810.

Signed-off-by: Dragos Ilie <dragos.ilie@xxxxxxxxx>
---
 net/ipv6/mcast.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 92f8e48..ef824a0 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -109,6 +109,7 @@ static int ip6_mc_leave_src(struct sock *sk, struct ipv6_mc_socklist *iml,
 
 #define IGMP6_UNSOLICITED_IVAL	(10*HZ)
 #define MLD_QRV_DEFAULT		2
+#define MLD_QIVAL_DEFAULT       (125*HZ)
 
 #define MLD_V1_SEEN(idev) (dev_net((idev)->dev)->ipv6.devconf_all->force_mld_version == 1 || \
 		(idev)->cnf.force_mld_version == 1 || \
@@ -1152,7 +1153,7 @@ int igmp6_event_query(struct sk_buff *skb)
 		/* Translate milliseconds to jiffies */
 		max_delay = (ntohs(mld->mld_maxdelay)*HZ)/1000;
 
-		switchback = (idev->mc_qrv + 1) * max_delay;
+		switchback = (idev->mc_qrv * MLD_QIVAL_DEFAULT) + max_delay;
 		idev->mc_v1_seen = jiffies + switchback;
 
 		/* cancel the interface change timer */
-- 
1.7.8.6

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html