bridge: Do not unregister all PF_BRIDGE rtnl operations

Bridge fdb and link rtnl operations are registered in
core/rtnetlink.  Bridge mdb operations are registred
in bridge/mdb.  When removing bridge module, do not
unregister ALL PF_BRIDGE ops since that would remove
the ops from rtnetlink as well.  Do remove mdb ops when
bridge is destroyed.

Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 9 insertions, 1 deletions

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 9cf5d2b28c76..3e05cc32da50 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -482,3 +482,10 @@ void br_mdb_init(void)
         rtnl_register(PF_BRIDGE, RTM_NEWMDB, br_mdb_add, NULL, NULL);
         rtnl_register(PF_BRIDGE, RTM_DELMDB, br_mdb_del, NULL, NULL);
 }
+
+void br_mdb_uninit(void)
+{
+        rtnl_unregister(PF_BRIDGE, RTM_GETMDB);
+        rtnl_unregister(PF_BRIDGE, RTM_NEWMDB);
+        rtnl_unregister(PF_BRIDGE, RTM_DELMDB);
+}
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index dce9defae3c6..5391ca43336a 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1633,6 +1633,7 @@ 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 dead9dfe865b..97ba0189c6f7 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -305,5 +305,4 @@ int __init br_netlink_init(void)
 void __exit br_netlink_fini(void)
 {
         rtnl_link_unregister(&br_link_ops);
-        rtnl_unregister_all(PF_BRIDGE);
 }
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 49b85af44016..8d83be5ffedc 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -447,6 +447,7 @@ extern struct net_bridge_port_group *br_multicast_new_port_group(
                                 struct net_bridge_port_group *next,
                                 unsigned char state);
 extern void br_mdb_init(void);
+extern void br_mdb_uninit(void);
 extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
                           struct br_ip *group, int type);