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net: bridge: Send notification when host join/leaves a group

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The host can join or leave a multicast group on the brX interface, as
indicated by IGMP snooping.  This is tracked within the bridge
multicast code. Send a notification when this happens, in the same way
a notification is sent when a port of the bridge joins/leaves a group
because of IGMP snooping.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn
2017-11-09 23:10:58 +01:00
committed by David S. Miller
parent ff0fd34eae
commit 2a26028d11
2 changed files with 11 additions and 4 deletions
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6
net/bridge/br_multicast.c
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@@ -250,6 +250,7 @@ static void br_multicast_group_expired(struct timer_list *t)
goto out;
mp->host_joined = false;
br_mdb_notify(br->dev, NULL, &mp->addr, RTM_DELMDB, 0);
if (mp->ports)
goto out;
@@ -773,7 +774,10 @@ static int br_multicast_add_group(struct net_bridge *br,
goto err;
if (!port) {
mp->host_joined = true;
if (!mp->host_joined) {
mp->host_joined = true;
br_mdb_notify(br->dev, NULL, &mp->addr, RTM_NEWMDB, 0);
}
mod_timer(&mp->timer, now + br->multicast_membership_interval);
goto out;
}