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authorVlad Yasevich <vyasevic@redhat.com>2013-01-02 09:41:25 +0000
committerDavid S. Miller <davem@davemloft.net>2013-01-03 01:56:11 -0800
commit3ec8e9f085bcaef0de1077f555c2c5102c223390 (patch)
tree45f31e75a2e5913eb7de444c7ebe6dc13dcd9859 /net
parent612a7c4e73f3306f3b599c60681194c1931a2dbc (diff)
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 <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_multicast.c2
-rw-r--r--net/bridge/br_netlink.c13
2 files changed, 12 insertions, 3 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 5391ca43336..6d6f26531de 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 97ba0189c6f..5dc66abcc9e 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);
}