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authorIdo Schimmel <idosch@mellanox.com>2017-05-26 09:37:24 +0300
committerDavid S. Miller <davem@davemloft.net>2017-05-26 22:18:44 +0300
commit9341b988e606f951df57d15569a425c6c74b945e (patch)
tree40b8cad55422d227854490ca6442e2382757cb87 /net/bridge
parent1f51445af35e8477027d87ca015a10257b13f5a2 (diff)
downloadlinux-9341b988e606f951df57d15569a425c6c74b945e.tar.xz
bridge: Export multicast enabled state
During enslavement to a bridge, after the CHANGEUPPER is sent, the multicast enabled state of the bridge isn't propagated down to the offloading driver unless it's changed. This patch allows such drivers to query the multicast enabled state from the bridge, so that they'll be able to correctly configure their flood tables during port enslavement. In case multicast is disabled, unregistered multicast packets can be treated as broadcast and be flooded through all the bridge ports. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_multicast.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index faa7261a992f..8dc5c8d69bcd 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -2176,6 +2176,14 @@ unlock:
return err;
}
+bool br_multicast_enabled(const struct net_device *dev)
+{
+ struct net_bridge *br = netdev_priv(dev);
+
+ return !br->multicast_disabled;
+}
+EXPORT_SYMBOL_GPL(br_multicast_enabled);
+
int br_multicast_set_querier(struct net_bridge *br, unsigned long val)
{
unsigned long max_delay;