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bridge: notify mdb changes via netlink

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As Stephen mentioned, we need to monitor the mdb
changes in user-space, so add notifications via netlink too.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang
2012-12-11 22:23:07 +00:00
committed by David S. Miller
parent fd0ea7dbfa
commit 37a393bc49
4 changed files with 90 additions and 0 deletions
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2
net/bridge/br_multicast.c
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@@ -681,6 +681,7 @@ static int br_multicast_add_group(struct net_bridge *br,
(unsigned long)p);
rcu_assign_pointer(*pp, p);
br_mdb_notify(br->dev, port, group, RTM_NEWMDB);
found:
mod_timer(&p->timer, now + br->multicast_membership_interval);
@@ -1240,6 +1241,7 @@ static void br_multicast_leave_group(struct net_bridge *br,
hlist_del_init(&p->mglist);
del_timer(&p->timer);
call_rcu_bh(&p->rcu, br_multicast_free_pg);
br_mdb_notify(br->dev, port, group, RTM_DELMDB);
if (!mp->ports && !mp->mglist &&
netif_running(br->dev))