From: Vlad Yasevich Date: Wed, 2 Jan 2013 09:41:25 +0000 (+0000) Subject: bridge: Correctly unregister MDB rtnetlink handlers X-Git-Tag: MMI-PSA29.97-13-9~15216^2~11 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3ec8e9f085bcaef0de1077f555c2c5102c223390;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git bridge: Correctly unregister MDB rtnetlink handlers Commit 63233159fd4e596568f5f168ecb0879b61631d47: bridge: Do not unregister all PF_BRIDGE rtnl operations introduced a bug where a removal of a single bridge from a multi-bridge system would remove MDB netlink handlers. The handlers should only be removed once all bridges are gone, but since we don't keep track of the number of bridge interfaces, it's simpler to do it when the bridge module is unloaded. To make it consistent, move the registration code into module initialization code path. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 5391ca43336a..6d6f26531de2 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1608,7 +1608,6 @@ void br_multicast_init(struct net_bridge *br) br_multicast_querier_expired, (unsigned long)br); setup_timer(&br->multicast_query_timer, br_multicast_query_expired, (unsigned long)br); - br_mdb_init(); } void br_multicast_open(struct net_bridge *br) @@ -1633,7 +1632,6 @@ void br_multicast_stop(struct net_bridge *br) del_timer_sync(&br->multicast_querier_timer); del_timer_sync(&br->multicast_query_timer); - br_mdb_uninit(); spin_lock_bh(&br->multicast_lock); mdb = mlock_dereference(br->mdb, br); if (!mdb) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 97ba0189c6f7..5dc66abcc9e2 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -299,10 +299,21 @@ struct rtnl_link_ops br_link_ops __read_mostly = { int __init br_netlink_init(void) { - return rtnl_link_register(&br_link_ops); + int err; + + br_mdb_init(); + err = rtnl_link_register(&br_link_ops); + if (err) + goto out; + + return 0; +out: + br_mdb_uninit(); + return err; } void __exit br_netlink_fini(void) { + br_mdb_uninit(); rtnl_link_unregister(&br_link_ops); }