From 2ce297fc24d1f0b70c756d1f593e7a089a2d888d Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Mon, 10 Dec 2012 02:15:35 +0000 Subject: bridge: fix seq check in br_mdb_dump() In case of rehashing, introduce a global variable 'br_mdb_rehash_seq' which gets increased every time when rehashing, and assign net->dev_base_seq + br_mdb_rehash_seq to cb->seq. In theory cb->seq could be wrapped to zero, but this is not easy to fix, as net->dev_base_seq is not visible inside br_mdb_rehash(). In practice, this is rare. Cc: Herbert Xu Cc: Stephen Hemminger Cc: "David S. Miller" Cc: Thomas Graf Cc: Jesper Dangaard Brouer Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- net/bridge/br_private.h | 1 + 1 file changed, 1 insertion(+) (limited to 'net/bridge/br_private.h') diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index ae0a6ec0a702..f95b766c7a98 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -411,6 +411,7 @@ extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __us /* br_multicast.c */ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING +extern unsigned int br_mdb_rehash_seq; extern int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, struct sk_buff *skb); -- cgit v1.2.3