From 0821ec55bb1382dd3b9476dc15d5dbbb19f0c3fd Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 15 Mar 2010 20:38:25 -0700 Subject: [PATCH] bridge: Move NULL mdb check into br_mdb_ip_get Since all callers of br_mdb_ip_get need to check whether the hash table is NULL, this patch moves the check into the function. This fixes the two callers (query/leave handler) that didn't check it. Reported-by: Michael Braun Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/bridge/br_multicast.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index fd96a8dc97f4..398221e81be5 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -49,22 +49,23 @@ static struct net_bridge_mdb_entry *__br_mdb_ip_get( static struct net_bridge_mdb_entry *br_mdb_ip_get( struct net_bridge_mdb_htable *mdb, __be32 dst) { + if (!mdb) + return NULL; + return __br_mdb_ip_get(mdb, dst, br_ip_hash(mdb, dst)); } struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, struct sk_buff *skb) { - struct net_bridge_mdb_htable *mdb = br->mdb; - - if (!mdb || br->multicast_disabled) + if (br->multicast_disabled) return NULL; switch (skb->protocol) { case htons(ETH_P_IP): if (BR_INPUT_SKB_CB(skb)->igmp) break; - return br_mdb_ip_get(mdb, ip_hdr(skb)->daddr); + return br_mdb_ip_get(br->mdb, ip_hdr(skb)->daddr); } return NULL; -- 2.30.2