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net: bridge: mdb: use mdb and port entries in notifications

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We have to use mdb and port entries when sending mdb notifications in
order to fill in all group attributes properly. Before this change we
would've used a fake br_mdb_entry struct to fill in only partial
information about the mdb. Now we can also reuse the mdb dump fill
function and thus have only a single central place which fills the mdb
attributes.

v3: add IPv6 support

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Nikolay Aleksandrov
2020-09-07 12:56:12 +03:00
committed by Jakub Kicinski
parent 79abc87505
commit 81f1983852
3 changed files with 92 additions and 68 deletions
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10
net/bridge/br_multicast.c
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@@ -188,7 +188,7 @@ void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
del_timer(&pg->rexmit_timer);
hlist_for_each_entry_safe(ent, tmp, &pg->src_list, node)
br_multicast_del_group_src(ent);
br_mdb_notify(br->dev, pg->port, &pg->addr, RTM_DELMDB, pg->flags);
br_mdb_notify(br->dev, mp, pg, RTM_DELMDB);
kfree_rcu(pg, rcu);
if (!mp->ports && !mp->host_joined && netif_running(br->dev))
@@ -749,8 +749,7 @@ void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify)
if (!mp->host_joined) {
mp->host_joined = true;
if (notify)
br_mdb_notify(mp->br->dev, NULL, &mp->addr,
RTM_NEWMDB, 0);
br_mdb_notify(mp->br->dev, mp, NULL, RTM_NEWMDB);
}
mod_timer(&mp->timer, jiffies + mp->br->multicast_membership_interval);
}
@@ -762,7 +761,7 @@ void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify)
mp->host_joined = false;
if (notify)
br_mdb_notify(mp->br->dev, NULL, &mp->addr, RTM_DELMDB, 0);
br_mdb_notify(mp->br->dev, mp, NULL, RTM_DELMDB);
}
static int br_multicast_add_group(struct net_bridge *br,
@@ -805,10 +804,11 @@ static int br_multicast_add_group(struct net_bridge *br,
if (unlikely(!p))
goto err;
rcu_assign_pointer(*pp, p);
br_mdb_notify(br->dev, port, group, RTM_NEWMDB, 0);
br_mdb_notify(br->dev, mp, p, RTM_NEWMDB);
found:
mod_timer(&p->timer, now + br->multicast_membership_interval);
out:
err = 0;