From 1fafc7a9353ef68e1b8d4bb130cb6402cf7dfd5a Mon Sep 17 00:00:00 2001 From: =?utf8?q?YOSHIFUJI=20Hideaki=20/=20=E5=90=89=E8=97=A4=E8=8B=B1?= =?utf8?q?=E6=98=8E?= Date: Sun, 25 Apr 2010 08:06:40 +0000 Subject: [PATCH] bridge br_multicast: Ensure to initialize BR_INPUT_SKB_CB(skb)->mrouters_only. Even with commit 32dec5dd0233ebffa9cae25ce7ba6daeb7df4467 ("bridge br_multicast: Don't refer to BR_INPUT_SKB_CB(skb)->mrouters_only without IGMP snooping."), BR_INPUT_SKB_CB(skb)->mrouters_only is not appropriately initialized if IGMP/MLD snooping support is compiled and disabled, so we can see garbage. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- net/bridge/br_multicast.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 38d1fbde5fb..e481dbd1949 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1340,9 +1340,6 @@ static int br_multicast_ipv4_rcv(struct net_bridge *br, unsigned offset; int err; - BR_INPUT_SKB_CB(skb)->igmp = 0; - BR_INPUT_SKB_CB(skb)->mrouters_only = 0; - /* We treat OOM as packet loss for now. */ if (!pskb_may_pull(skb, sizeof(*iph))) return -EINVAL; @@ -1440,9 +1437,6 @@ static int br_multicast_ipv6_rcv(struct net_bridge *br, unsigned offset; int err; - BR_INPUT_SKB_CB(skb)->igmp = 0; - BR_INPUT_SKB_CB(skb)->mrouters_only = 0; - if (!pskb_may_pull(skb, sizeof(*ip6h))) return -EINVAL; @@ -1550,6 +1544,9 @@ out: int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, struct sk_buff *skb) { + BR_INPUT_SKB_CB(skb)->igmp = 0; + BR_INPUT_SKB_CB(skb)->mrouters_only = 0; + if (br->multicast_disabled) return 0; -- 2.20.1