1 files changed, 94 insertions, 47 deletions

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 8dc5c8d..cb47295 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -239,9 +239,9 @@ static void br_multicast_free_group(struct rcu_head *head)
 	kfree(mp);
 }
 
-static void br_multicast_group_expired(unsigned long data)
+static void br_multicast_group_expired(struct timer_list *t)
 {
-	struct net_bridge_mdb_entry *mp = (void *)data;
+	struct net_bridge_mdb_entry *mp = from_timer(mp, t, timer);
 	struct net_bridge *br = mp->br;
 	struct net_bridge_mdb_htable *mdb;
 
@@ -249,7 +249,8 @@ static void br_multicast_group_expired(unsigned long data)
 	if (!netif_running(br->dev) || timer_pending(&mp->timer))
 		goto out;
 
-	mp->mglist = false;
+	mp->host_joined = false;
+	br_mdb_notify(br->dev, NULL, &mp->addr, RTM_DELMDB, 0);
 
 	if (mp->ports)
 		goto out;
@@ -292,7 +293,7 @@ static void br_multicast_del_pg(struct net_bridge *br,
 			      p->flags);
 		call_rcu_bh(&p->rcu, br_multicast_free_pg);
 
-		if (!mp->ports && !mp->mglist &&
+		if (!mp->ports && !mp->host_joined &&
 		    netif_running(br->dev))
 			mod_timer(&mp->timer, jiffies);
 
@@ -302,9 +303,9 @@ static void br_multicast_del_pg(struct net_bridge *br,
 	WARN_ON(1);
 }
 
-static void br_multicast_port_group_expired(unsigned long data)
+static void br_multicast_port_group_expired(struct timer_list *t)
 {
-	struct net_bridge_port_group *pg = (void *)data;
+	struct net_bridge_port_group *pg = from_timer(pg, t, timer);
 	struct net_bridge *br = pg->port->br;
 
 	spin_lock(&br->multicast_lock);
@@ -701,8 +702,7 @@ rehash:
 
 	mp->br = br;
 	mp->addr = *group;
-	setup_timer(&mp->timer, br_multicast_group_expired,
-		    (unsigned long)mp);
+	timer_setup(&mp->timer, br_multicast_group_expired, 0);
 
 	hlist_add_head_rcu(&mp->hlist[mdb->ver], &mdb->mhash[hash]);
 	mdb->size++;
@@ -729,8 +729,7 @@ struct net_bridge_port_group *br_multicast_new_port_group(
 	p->flags = flags;
 	rcu_assign_pointer(p->next, next);
 	hlist_add_head(&p->mglist, &port->mglist);
-	setup_timer(&p->timer, br_multicast_port_group_expired,
-		    (unsigned long)p);
+	timer_setup(&p->timer, br_multicast_port_group_expired, 0);
 
 	if (src)
 		memcpy(p->eth_addr, src, ETH_ALEN);
@@ -775,7 +774,10 @@ static int br_multicast_add_group(struct net_bridge *br,
 		goto err;
 
 	if (!port) {
-		mp->mglist = 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;
 	}
@@ -843,9 +845,10 @@ static int br_ip6_multicast_add_group(struct net_bridge *br,
 }
 #endif
 
-static void br_multicast_router_expired(unsigned long data)
+static void br_multicast_router_expired(struct timer_list *t)
 {
-	struct net_bridge_port *port = (void *)data;
+	struct net_bridge_port *port =
+			from_timer(port, t, multicast_router_timer);
 	struct net_bridge *br = port->br;
 
 	spin_lock(&br->multicast_lock);
@@ -859,8 +862,32 @@ out:
 	spin_unlock(&br->multicast_lock);
 }
 
-static void br_multicast_local_router_expired(unsigned long data)
+static void br_mc_router_state_change(struct net_bridge *p,
+				      bool is_mc_router)
+{
+	struct switchdev_attr attr = {
+		.orig_dev = p->dev,
+		.id = SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
+		.flags = SWITCHDEV_F_DEFER,
+		.u.mrouter = is_mc_router,
+	};
+
+	switchdev_port_attr_set(p->dev, &attr);
+}
+
+static void br_multicast_local_router_expired(struct timer_list *t)
 {
+	struct net_bridge *br = from_timer(br, t, multicast_router_timer);
+
+	spin_lock(&br->multicast_lock);
+	if (br->multicast_router == MDB_RTR_TYPE_DISABLED ||
+	    br->multicast_router == MDB_RTR_TYPE_PERM ||
+	    timer_pending(&br->multicast_router_timer))
+		goto out;
+
+	br_mc_router_state_change(br, false);
+out:
+	spin_unlock(&br->multicast_lock);
 }
 
 static void br_multicast_querier_expired(struct net_bridge *br,
@@ -876,17 +903,17 @@ out:
 	spin_unlock(&br->multicast_lock);
 }
 
-static void br_ip4_multicast_querier_expired(unsigned long data)
+static void br_ip4_multicast_querier_expired(struct timer_list *t)
 {
-	struct net_bridge *br = (void *)data;
+	struct net_bridge *br = from_timer(br, t, ip4_other_query.timer);
 
 	br_multicast_querier_expired(br, &br->ip4_own_query);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
-static void br_ip6_multicast_querier_expired(unsigned long data)
+static void br_ip6_multicast_querier_expired(struct timer_list *t)
 {
-	struct net_bridge *br = (void *)data;
+	struct net_bridge *br = from_timer(br, t, ip6_other_query.timer);
 
 	br_multicast_querier_expired(br, &br->ip6_own_query);
 }
@@ -987,17 +1014,17 @@ out:
 	spin_unlock(&br->multicast_lock);
 }
 
-static void br_ip4_multicast_port_query_expired(unsigned long data)
+static void br_ip4_multicast_port_query_expired(struct timer_list *t)
 {
-	struct net_bridge_port *port = (void *)data;
+	struct net_bridge_port *port = from_timer(port, t, ip4_own_query.timer);
 
 	br_multicast_port_query_expired(port, &port->ip4_own_query);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
-static void br_ip6_multicast_port_query_expired(unsigned long data)
+static void br_ip6_multicast_port_query_expired(struct timer_list *t)
 {
-	struct net_bridge_port *port = (void *)data;
+	struct net_bridge_port *port = from_timer(port, t, ip6_own_query.timer);
 
 	br_multicast_port_query_expired(port, &port->ip6_own_query);
 }
@@ -1019,13 +1046,13 @@ int br_multicast_add_port(struct net_bridge_port *port)
 {
 	port->multicast_router = MDB_RTR_TYPE_TEMP_QUERY;
 
-	setup_timer(&port->multicast_router_timer, br_multicast_router_expired,
-		    (unsigned long)port);
-	setup_timer(&port->ip4_own_query.timer,
-		    br_ip4_multicast_port_query_expired, (unsigned long)port);
+	timer_setup(&port->multicast_router_timer,
+		    br_multicast_router_expired, 0);
+	timer_setup(&port->ip4_own_query.timer,
+		    br_ip4_multicast_port_query_expired, 0);
 #if IS_ENABLED(CONFIG_IPV6)
-	setup_timer(&port->ip6_own_query.timer,
-		    br_ip6_multicast_port_query_expired, (unsigned long)port);
+	timer_setup(&port->ip6_own_query.timer,
+		    br_ip6_multicast_port_query_expired, 0);
 #endif
 	br_mc_disabled_update(port->dev, port->br->multicast_disabled);
 
@@ -1364,9 +1391,12 @@ static void br_multicast_mark_router(struct net_bridge *br,
 	unsigned long now = jiffies;
 
 	if (!port) {
-		if (br->multicast_router == MDB_RTR_TYPE_TEMP_QUERY)
+		if (br->multicast_router == MDB_RTR_TYPE_TEMP_QUERY) {
+			if (!timer_pending(&br->multicast_router_timer))
+				br_mc_router_state_change(br, true);
 			mod_timer(&br->multicast_router_timer,
 				  now + br->multicast_querier_interval);
+		}
 		return;
 	}
 
@@ -1451,7 +1481,7 @@ static int br_ip4_multicast_query(struct net_bridge *br,
 
 	max_delay *= br->multicast_last_member_count;
 
-	if (mp->mglist &&
+	if (mp->host_joined &&
 	    (timer_pending(&mp->timer) ?
 	     time_after(mp->timer.expires, now + max_delay) :
 	     try_to_del_timer_sync(&mp->timer) >= 0))
@@ -1535,7 +1565,7 @@ static int br_ip6_multicast_query(struct net_bridge *br,
 		goto out;
 
 	max_delay *= br->multicast_last_member_count;
-	if (mp->mglist &&
+	if (mp->host_joined &&
 	    (timer_pending(&mp->timer) ?
 	     time_after(mp->timer.expires, now + max_delay) :
 	     try_to_del_timer_sync(&mp->timer) >= 0))
@@ -1596,7 +1626,7 @@ br_multicast_leave_group(struct net_bridge *br,
 			br_mdb_notify(br->dev, port, group, RTM_DELMDB,
 				      p->flags);
 
-			if (!mp->ports && !mp->mglist &&
+			if (!mp->ports && !mp->host_joined &&
 			    netif_running(br->dev))
 				mod_timer(&mp->timer, jiffies);
 		}
@@ -1636,7 +1666,7 @@ br_multicast_leave_group(struct net_bridge *br,
 		     br->multicast_last_member_interval;
 
 	if (!port) {
-		if (mp->mglist &&
+		if (mp->host_joined &&
 		    (timer_pending(&mp->timer) ?
 		     time_after(mp->timer.expires, time) :
 		     try_to_del_timer_sync(&mp->timer) >= 0)) {
@@ -1906,17 +1936,17 @@ static void br_multicast_query_expired(struct net_bridge *br,
 	spin_unlock(&br->multicast_lock);
 }
 
-static void br_ip4_multicast_query_expired(unsigned long data)
+static void br_ip4_multicast_query_expired(struct timer_list *t)
 {
-	struct net_bridge *br = (void *)data;
+	struct net_bridge *br = from_timer(br, t, ip4_own_query.timer);
 
 	br_multicast_query_expired(br, &br->ip4_own_query, &br->ip4_querier);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
-static void br_ip6_multicast_query_expired(unsigned long data)
+static void br_ip6_multicast_query_expired(struct timer_list *t)
 {
-	struct net_bridge *br = (void *)data;
+	struct net_bridge *br = from_timer(br, t, ip6_own_query.timer);
 
 	br_multicast_query_expired(br, &br->ip6_own_query, &br->ip6_querier);
 }
@@ -1951,17 +1981,17 @@ void br_multicast_init(struct net_bridge *br)
 	br->has_ipv6_addr = 1;
 
 	spin_lock_init(&br->multicast_lock);
-	setup_timer(&br->multicast_router_timer,
+	timer_setup(&br->multicast_router_timer,
 		    br_multicast_local_router_expired, 0);
-	setup_timer(&br->ip4_other_query.timer,
-		    br_ip4_multicast_querier_expired, (unsigned long)br);
-	setup_timer(&br->ip4_own_query.timer, br_ip4_multicast_query_expired,
-		    (unsigned long)br);
+	timer_setup(&br->ip4_other_query.timer,
+		    br_ip4_multicast_querier_expired, 0);
+	timer_setup(&br->ip4_own_query.timer,
+		    br_ip4_multicast_query_expired, 0);
 #if IS_ENABLED(CONFIG_IPV6)
-	setup_timer(&br->ip6_other_query.timer,
-		    br_ip6_multicast_querier_expired, (unsigned long)br);
-	setup_timer(&br->ip6_own_query.timer, br_ip6_multicast_query_expired,
-		    (unsigned long)br);
+	timer_setup(&br->ip6_other_query.timer,
+		    br_ip6_multicast_querier_expired, 0);
+	timer_setup(&br->ip6_own_query.timer,
+		    br_ip6_multicast_query_expired, 0);
 #endif
 }
 
@@ -2042,9 +2072,14 @@ int br_multicast_set_router(struct net_bridge *br, unsigned long val)
 	switch (val) {
 	case MDB_RTR_TYPE_DISABLED:
 	case MDB_RTR_TYPE_PERM:
+		br_mc_router_state_change(br, val == MDB_RTR_TYPE_PERM);
 		del_timer(&br->multicast_router_timer);
-		/* fall through */
+		br->multicast_router = val;
+		err = 0;
+		break;
 	case MDB_RTR_TYPE_TEMP_QUERY:
+		if (br->multicast_router != MDB_RTR_TYPE_TEMP_QUERY)
+			br_mc_router_state_change(br, false);
 		br->multicast_router = val;
 		err = 0;
 		break;
@@ -2184,6 +2219,18 @@ bool br_multicast_enabled(const struct net_device *dev)
 }
 EXPORT_SYMBOL_GPL(br_multicast_enabled);
 
+bool br_multicast_router(const struct net_device *dev)
+{
+	struct net_bridge *br = netdev_priv(dev);
+	bool is_router;
+
+	spin_lock_bh(&br->multicast_lock);
+	is_router = br_multicast_is_router(br);
+	spin_unlock_bh(&br->multicast_lock);
+	return is_router;
+}
+EXPORT_SYMBOL_GPL(br_multicast_router);
+
 int br_multicast_set_querier(struct net_bridge *br, unsigned long val)
 {
 	unsigned long max_delay;