Merge branch 'net-bridge-mc-cleanups'

Ido Schimmel says:

====================
bridge: A few multicast cleanups

Clean up a few issues spotted while working on the bridge multicast code
and running its selftests.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/bridge/br_mdb.c

@@ -866,7 +866,6 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
 	unsigned long now = jiffies;
 	unsigned char flags = 0;
 	u8 filter_mode;
-	int err;
 
 	__mdb_entry_to_br_ip(entry, &group, mdb_attrs);
 
@@ -892,13 +891,9 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
 		return -EINVAL;
 	}
 
-	mp = br_mdb_ip_get(br, &group);
-	if (!mp) {
-		mp = br_multicast_new_group(br, &group);
-		err = PTR_ERR_OR_ZERO(mp);
-		if (err)
-			return err;
-	}
+	mp = br_multicast_new_group(br, &group);
+	if (IS_ERR(mp))
+		return PTR_ERR(mp);
 
 	/* host join */
 	if (!port) {

net/bridge/br_multicast.c

@@ -2669,7 +2669,7 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge_mcast *brmctx,
 		if (!pmctx || igmpv2)
 			continue;
 
-		spin_lock_bh(&brmctx->br->multicast_lock);
+		spin_lock(&brmctx->br->multicast_lock);
 		if (!br_multicast_ctx_should_use(brmctx, pmctx))
 			goto unlock_continue;
 
@@ -2717,7 +2717,7 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge_mcast *brmctx,
 		if (changed)
 			br_mdb_notify(brmctx->br->dev, mdst, pg, RTM_NEWMDB);
 unlock_continue:
-		spin_unlock_bh(&brmctx->br->multicast_lock);
+		spin_unlock(&brmctx->br->multicast_lock);
 	}
 
 	return err;
@@ -2807,7 +2807,7 @@ static int br_ip6_multicast_mld2_report(struct net_bridge_mcast *brmctx,
 		if (!pmctx || mldv1)
 			continue;
 
-		spin_lock_bh(&brmctx->br->multicast_lock);
+		spin_lock(&brmctx->br->multicast_lock);
 		if (!br_multicast_ctx_should_use(brmctx, pmctx))
 			goto unlock_continue;
 
@@ -2859,7 +2859,7 @@ static int br_ip6_multicast_mld2_report(struct net_bridge_mcast *brmctx,
 		if (changed)
 			br_mdb_notify(brmctx->br->dev, mdst, pg, RTM_NEWMDB);
 unlock_continue:
-		spin_unlock_bh(&brmctx->br->multicast_lock);
+		spin_unlock(&brmctx->br->multicast_lock);
 	}
 
 	return err;

tools/testing/selftests/net/forwarding/bridge_igmp.sh

@@ -96,9 +96,6 @@ cleanup()
 
 	switch_destroy
 
-	# Always cleanup the mcast group
-	ip address del dev $h2 $TEST_GROUP/32 2>&1 1>/dev/null
-
 	h2_destroy
 	h1_destroy
 

tools/testing/selftests/net/forwarding/bridge_vlan_mcast.sh

@@ -59,6 +59,9 @@ switch_create()
 
 switch_destroy()
 {
+	tc qdisc del dev $swp2 clsact
+	tc qdisc del dev $swp1 clsact
+
 	ip link set dev $swp2 down
 	ip link set dev $swp1 down