!1843 net: bridge: multicast: notify switchdev driver whenever MC processing gets disabled

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhengchao Shao <shaozhengchao@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/BRJBIYKRMZVLU22DE46JGRSJRG6C7E66/ 
 
https://gitee.com/openeuler/kernel/issues/I7V613 
 
Link:https://gitee.com/openeuler/kernel/pulls/1843 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com> 
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com> 

net/bridge/br_multicast.c

@@ -48,6 +48,8 @@ static const struct rhashtable_params br_sg_port_rht_params = {
 	.automatic_shrinking = true,
 };
 
+static void br_mc_disabled_update(struct net_device *dev, bool value);
+
 static void br_multicast_start_querier(struct net_bridge *br,
 				       struct bridge_mcast_own_query *query);
 static void br_multicast_add_router(struct net_bridge *br,
@@ -1040,6 +1042,7 @@ struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br,
 		return mp;
 
 	if (atomic_read(&br->mdb_hash_tbl.nelems) >= br->hash_max) {
+		br_mc_disabled_update(br->dev, false);
 		br_opt_toggle(br, BROPT_MULTICAST_ENABLED, false);
 		return ERR_PTR(-E2BIG);
 	}