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net: bridge: mdb: push notifications in __br_mdb_add/del 

This change is in preparation for using the mdb port group entries when
sending a notification, so their full state and additional attributes can
be filled in.

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 12:56:11 +03:00 committed by Jakub Kicinski
parent 42c11ccfe8
commit 79abc87505
1 changed files with 8 additions and 12 deletions
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20
net/bridge/br_mdb.c
View File

@ -681,7 +681,7 @@ static int br_mdb_parse(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
struct br_ip *group, unsigned char state)
struct br_ip *group, struct br_mdb_entry *entry)
{
struct net_bridge_mdb_entry *mp;
struct net_bridge_port_group *p;
@ -700,12 +700,13 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
/* host join */
if (!port) {
/* don't allow any flags for host-joined groups */
if (state)
if (entry->state)
return -EINVAL;
if (mp->host_joined)
return -EEXIST;
br_multicast_host_join(mp, false);
__br_mdb_notify(br->dev, NULL, entry, RTM_NEWMDB);
return 0;
}
@ -719,13 +720,14 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
break;
}
p = br_multicast_new_port_group(port, group, *pp, state, NULL,
p = br_multicast_new_port_group(port, group, *pp, entry->state, NULL,
MCAST_EXCLUDE);
if (unlikely(!p))
return -ENOMEM;
rcu_assign_pointer(*pp, p);
if (state == MDB_TEMPORARY)
if (entry->state == MDB_TEMPORARY)
mod_timer(&p->timer, now + br->multicast_membership_interval);
__br_mdb_notify(br->dev, port, entry, RTM_NEWMDB);
return 0;
}
@ -754,7 +756,7 @@ static int __br_mdb_add(struct net *net, struct net_bridge *br,
__mdb_entry_to_br_ip(entry, &ip);
spin_lock_bh(&br->multicast_lock);
ret = br_mdb_add_group(br, p, &ip, entry->state);
ret = br_mdb_add_group(br, p, &ip, entry);
spin_unlock_bh(&br->multicast_lock);
return ret;
}
@ -799,12 +801,9 @@ static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
err = __br_mdb_add(net, br, entry);
if (err)
break;
__br_mdb_notify(dev, p, entry, RTM_NEWMDB);
}
} else {
err = __br_mdb_add(net, br, entry);
if (!err)
__br_mdb_notify(dev, p, entry, RTM_NEWMDB);
}
return err;
@ -832,6 +831,7 @@ static int __br_mdb_del(struct net_bridge *br, struct br_mdb_entry *entry)
if (entry->ifindex == mp->br->dev->ifindex && mp->host_joined) {
br_multicast_host_leave(mp, false);
err = 0;
__br_mdb_notify(br->dev, NULL, entry, RTM_DELMDB);
if (!mp->ports && netif_running(br->dev))
mod_timer(&mp->timer, jiffies);
goto unlock;
@ -894,13 +894,9 @@ static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
list_for_each_entry(v, &vg->vlan_list, vlist) {
entry->vid = v->vid;
err = __br_mdb_del(br, entry);
if (!err)
__br_mdb_notify(dev, p, entry, RTM_DELMDB);
}
} else {
err = __br_mdb_del(br, entry);
if (!err)
__br_mdb_notify(dev, p, entry, RTM_DELMDB);
}
return err;