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authorAndrew Lunn <andrew@lunn.ch>2017-11-09 23:10:58 +0100
committerDavid S. Miller <davem@davemloft.net>2017-11-10 13:41:40 +0900
commit2a26028d119267a2386733dd71d256f269e70f52 (patch)
tree6775f047aca49015026ef90c1f2061e5ac5f4b3c
parentff0fd34eaee9978f9ed7f6e2ac47f9590d4afac3 (diff)
net: bridge: Send notification when host join/leaves a group
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>
-rw-r--r--net/bridge/br_mdb.c9
-rw-r--r--net/bridge/br_multicast.c6
2 files changed, 11 insertions, 4 deletions
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index aa716a33cb71..702408d2a93c 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -317,7 +317,7 @@ static void __br_mdb_notify(struct net_device *dev, struct net_bridge_port *p,
#endif
mdb.obj.orig_dev = port_dev;
- if (port_dev && type == RTM_NEWMDB) {
+ if (p && port_dev && type == RTM_NEWMDB) {
complete_info = kmalloc(sizeof(*complete_info), GFP_ATOMIC);
if (complete_info) {
complete_info->port = p;
@@ -327,7 +327,7 @@ static void __br_mdb_notify(struct net_device *dev, struct net_bridge_port *p,
if (switchdev_port_obj_add(port_dev, &mdb.obj))
kfree(complete_info);
}
- } else if (port_dev && type == RTM_DELMDB) {
+ } else if (p && port_dev && type == RTM_DELMDB) {
switchdev_port_obj_del(port_dev, &mdb.obj);
}
@@ -353,7 +353,10 @@ void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
struct br_mdb_entry entry;
memset(&entry, 0, sizeof(entry));
- entry.ifindex = port->dev->ifindex;
+ if (port)
+ entry.ifindex = port->dev->ifindex;
+ else
+ entry.ifindex = dev->ifindex;
entry.addr.proto = group->proto;
entry.addr.u.ip4 = group->u.ip4;
#if IS_ENABLED(CONFIG_IPV6)
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index bfe5adb1f51c..cb4729539b82 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -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;
}