1 files changed, 1062 insertions, 608 deletions

diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index d0434dc8c03b..470f1ec3b579 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -49,30 +49,30 @@ static const struct rhashtable_params br_sg_port_rht_params = {
 	.automatic_shrinking = true,
 };
 
-static void br_multicast_start_querier(struct net_bridge *br,
+static void br_multicast_start_querier(struct net_bridge_mcast *brmctx,
 				       struct bridge_mcast_own_query *query);
-static void br_ip4_multicast_add_router(struct net_bridge *br,
-					struct net_bridge_port *port);
-static void br_ip4_multicast_leave_group(struct net_bridge *br,
-					 struct net_bridge_port *port,
+static void br_ip4_multicast_add_router(struct net_bridge_mcast *brmctx,
+					struct net_bridge_mcast_port *pmctx);
+static void br_ip4_multicast_leave_group(struct net_bridge_mcast *brmctx,
+					 struct net_bridge_mcast_port *pmctx,
 					 __be32 group,
 					 __u16 vid,
 					 const unsigned char *src);
 static void br_multicast_port_group_rexmit(struct timer_list *t);
 
 static void
-br_multicast_rport_del_notify(struct net_bridge_port *p, bool deleted);
-static void br_ip6_multicast_add_router(struct net_bridge *br,
-					struct net_bridge_port *port);
+br_multicast_rport_del_notify(struct net_bridge_mcast_port *pmctx, bool deleted);
+static void br_ip6_multicast_add_router(struct net_bridge_mcast *brmctx,
+					struct net_bridge_mcast_port *pmctx);
 #if IS_ENABLED(CONFIG_IPV6)
-static void br_ip6_multicast_leave_group(struct net_bridge *br,
-					 struct net_bridge_port *port,
+static void br_ip6_multicast_leave_group(struct net_bridge_mcast *brmctx,
+					 struct net_bridge_mcast_port *pmctx,
 					 const struct in6_addr *group,
 					 __u16 vid, const unsigned char *src);
 #endif
 static struct net_bridge_port_group *
-__br_multicast_add_group(struct net_bridge *br,
-			 struct net_bridge_port *port,
+__br_multicast_add_group(struct net_bridge_mcast *brmctx,
+			 struct net_bridge_mcast_port *pmctx,
 			 struct br_ip *group,
 			 const unsigned char *src,
 			 u8 filter_mode,
@@ -80,6 +80,7 @@ __br_multicast_add_group(struct net_bridge *br,
 			 bool blocked);
 static void br_multicast_find_del_pg(struct net_bridge *br,
 				     struct net_bridge_port_group *pg);
+static void __br_multicast_stop(struct net_bridge_mcast *brmctx);
 
 static struct net_bridge_port_group *
 br_sg_port_find(struct net_bridge *br,
@@ -140,12 +141,14 @@ static struct net_bridge_mdb_entry *br_mdb_ip6_get(struct net_bridge *br,
 }
 #endif
 
-struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
+struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge_mcast *brmctx,
 					struct sk_buff *skb, u16 vid)
 {
+	struct net_bridge *br = brmctx->br;
 	struct br_ip ip;
 
-	if (!br_opt_get(br, BROPT_MULTICAST_ENABLED))
+	if (!br_opt_get(br, BROPT_MULTICAST_ENABLED) ||
+	    br_multicast_ctx_vlan_global_disabled(brmctx))
 		return NULL;
 
 	if (BR_INPUT_SKB_CB(skb)->igmp)
@@ -158,7 +161,7 @@ struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 	switch (skb->protocol) {
 	case htons(ETH_P_IP):
 		ip.dst.ip4 = ip_hdr(skb)->daddr;
-		if (br->multicast_igmp_version == 3) {
+		if (brmctx->multicast_igmp_version == 3) {
 			struct net_bridge_mdb_entry *mdb;
 
 			ip.src.ip4 = ip_hdr(skb)->saddr;
@@ -171,7 +174,7 @@ struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 #if IS_ENABLED(CONFIG_IPV6)
 	case htons(ETH_P_IPV6):
 		ip.dst.ip6 = ipv6_hdr(skb)->daddr;
-		if (br->multicast_mld_version == 2) {
+		if (brmctx->multicast_mld_version == 2) {
 			struct net_bridge_mdb_entry *mdb;
 
 			ip.src.ip6 = ipv6_hdr(skb)->saddr;
@@ -190,6 +193,62 @@ struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
 	return br_mdb_ip_get_rcu(br, &ip);
 }
 
+/* IMPORTANT: this function must be used only when the contexts cannot be
+ * passed down (e.g. timer) and must be used for read-only purposes because
+ * the vlan snooping option can change, so it can return any context
+ * (non-vlan or vlan). Its initial intended purpose is to read timer values
+ * from the *current* context based on the option. At worst that could lead
+ * to inconsistent timers when the contexts are changed, i.e. src timer
+ * which needs to re-arm with a specific delay taken from the old context
+ */
+static struct net_bridge_mcast_port *
+br_multicast_pg_to_port_ctx(const struct net_bridge_port_group *pg)
+{
+	struct net_bridge_mcast_port *pmctx = &pg->key.port->multicast_ctx;
+	struct net_bridge_vlan *vlan;
+
+	lockdep_assert_held_once(&pg->key.port->br->multicast_lock);
+
+	/* if vlan snooping is disabled use the port's multicast context */
+	if (!pg->key.addr.vid ||
+	    !br_opt_get(pg->key.port->br, BROPT_MCAST_VLAN_SNOOPING_ENABLED))
+		goto out;
+
+	/* locking is tricky here, due to different rules for multicast and
+	 * vlans we need to take rcu to find the vlan and make sure it has
+	 * the BR_VLFLAG_MCAST_ENABLED flag set, it can only change under
+	 * multicast_lock which must be already held here, so the vlan's pmctx
+	 * can safely be used on return
+	 */
+	rcu_read_lock();
+	vlan = br_vlan_find(nbp_vlan_group(pg->key.port), pg->key.addr.vid);
+	if (vlan && !br_multicast_port_ctx_vlan_disabled(&vlan->port_mcast_ctx))
+		pmctx = &vlan->port_mcast_ctx;
+	else
+		pmctx = NULL;
+	rcu_read_unlock();
+out:
+	return pmctx;
+}
+
+/* when snooping we need to check if the contexts should be used
+ * in the following order:
+ * - if pmctx is non-NULL (port), check if it should be used
+ * - if pmctx is NULL (bridge), check if brmctx should be used
+ */
+static bool
+br_multicast_ctx_should_use(const struct net_bridge_mcast *brmctx,
+			    const struct net_bridge_mcast_port *pmctx)
+{
+	if (!netif_running(brmctx->br->dev))
+		return false;
+
+	if (pmctx)
+		return !br_multicast_port_ctx_state_disabled(pmctx);
+	else
+		return !br_multicast_ctx_vlan_disabled(brmctx);
+}
+
 static bool br_port_group_equal(struct net_bridge_port_group *p,
 				struct net_bridge_port *port,
 				const unsigned char *src)
@@ -203,20 +262,23 @@ static bool br_port_group_equal(struct net_bridge_port_group *p,
 	return ether_addr_equal(src, p->eth_addr);
 }
 
-static void __fwd_add_star_excl(struct net_bridge_port_group *pg,
+static void __fwd_add_star_excl(struct net_bridge_mcast_port *pmctx,
+				struct net_bridge_port_group *pg,
 				struct br_ip *sg_ip)
 {
 	struct net_bridge_port_group_sg_key sg_key;
-	struct net_bridge *br = pg->key.port->br;
 	struct net_bridge_port_group *src_pg;
+	struct net_bridge_mcast *brmctx;
 
 	memset(&sg_key, 0, sizeof(sg_key));
+	brmctx = br_multicast_port_ctx_get_global(pmctx);
 	sg_key.port = pg->key.port;
 	sg_key.addr = *sg_ip;
-	if (br_sg_port_find(br, &sg_key))
+	if (br_sg_port_find(brmctx->br, &sg_key))
 		return;
 
-	src_pg = __br_multicast_add_group(br, pg->key.port, sg_ip, pg->eth_addr,
+	src_pg = __br_multicast_add_group(brmctx, pmctx,
+					  sg_ip, pg->eth_addr,
 					  MCAST_INCLUDE, false, false);
 	if (IS_ERR_OR_NULL(src_pg) ||
 	    src_pg->rt_protocol != RTPROT_KERNEL)
@@ -256,6 +318,7 @@ void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
 {
 	struct net_bridge *br = pg->key.port->br;
 	struct net_bridge_port_group *pg_lst;
+	struct net_bridge_mcast_port *pmctx;
 	struct net_bridge_mdb_entry *mp;
 	struct br_ip sg_ip;
 
@@ -265,9 +328,13 @@ void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
 	mp = br_mdb_ip_get(br, &pg->key.addr);
 	if (!mp)
 		return;
+	pmctx = br_multicast_pg_to_port_ctx(pg);
+	if (!pmctx)
+		return;
 
 	memset(&sg_ip, 0, sizeof(sg_ip));
 	sg_ip = pg->key.addr;
+
 	for (pg_lst = mlock_dereference(mp->ports, br);
 	     pg_lst;
 	     pg_lst = mlock_dereference(pg_lst->next, br)) {
@@ -284,7 +351,7 @@ void br_multicast_star_g_handle_mode(struct net_bridge_port_group *pg,
 				__fwd_del_star_excl(pg, &sg_ip);
 				break;
 			case MCAST_EXCLUDE:
-				__fwd_add_star_excl(pg, &sg_ip);
+				__fwd_add_star_excl(pmctx, pg, &sg_ip);
 				break;
 			}
 		}
@@ -377,7 +444,9 @@ void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
 {
 	struct net_bridge_port_group_sg_key sg_key;
 	struct net_bridge *br = star_mp->br;
+	struct net_bridge_mcast_port *pmctx;
 	struct net_bridge_port_group *pg;
+	struct net_bridge_mcast *brmctx;
 
 	if (WARN_ON(br_multicast_is_star_g(&sg->key.addr)))
 		return;
@@ -400,7 +469,12 @@ void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
 		if (br_sg_port_find(br, &sg_key))
 			continue;
 
-		src_pg = __br_multicast_add_group(br, pg->key.port,
+		pmctx = br_multicast_pg_to_port_ctx(pg);
+		if (!pmctx)
+			continue;
+		brmctx = br_multicast_port_ctx_get_global(pmctx);
+
+		src_pg = __br_multicast_add_group(brmctx, pmctx,
 						  &sg->key.addr,
 						  sg->eth_addr,
 						  MCAST_INCLUDE, false, false);
@@ -414,16 +488,23 @@ void br_multicast_sg_add_exclude_ports(struct net_bridge_mdb_entry *star_mp,
 static void br_multicast_fwd_src_add(struct net_bridge_group_src *src)
 {
 	struct net_bridge_mdb_entry *star_mp;
+	struct net_bridge_mcast_port *pmctx;
 	struct net_bridge_port_group *sg;
+	struct net_bridge_mcast *brmctx;
 	struct br_ip sg_ip;
 
 	if (src->flags & BR_SGRP_F_INSTALLED)
 		return;
 
 	memset(&sg_ip, 0, sizeof(sg_ip));
+	pmctx = br_multicast_pg_to_port_ctx(src->pg);
+	if (!pmctx)
+		return;
+	brmctx = br_multicast_port_ctx_get_global(pmctx);
 	sg_ip = src->pg->key.addr;
 	sg_ip.src = src->addr.src;
-	sg = __br_multicast_add_group(src->br, src->pg->key.port, &sg_ip,
+
+	sg = __br_multicast_add_group(brmctx, pmctx, &sg_ip,
 				      src->pg->eth_addr, MCAST_INCLUDE, false,
 				      !timer_pending(&src->timer));
 	if (IS_ERR_OR_NULL(sg))
@@ -692,7 +773,28 @@ static void br_multicast_gc(struct hlist_head *head)
 	}
 }
 
-static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br,
+static void __br_multicast_query_handle_vlan(struct net_bridge_mcast *brmctx,
+					     struct net_bridge_mcast_port *pmctx,
+					     struct sk_buff *skb)
+{
+	struct net_bridge_vlan *vlan = NULL;
+
+	if (pmctx && br_multicast_port_ctx_is_vlan(pmctx))
+		vlan = pmctx->vlan;
+	else if (br_multicast_ctx_is_vlan(brmctx))
+		vlan = brmctx->vlan;
+
+	if (vlan && !(vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED)) {
+		u16 vlan_proto;
+
+		if (br_vlan_get_proto(brmctx->br->dev, &vlan_proto) != 0)
+			return;
+		__vlan_hwaccel_put_tag(skb, htons(vlan_proto), vlan->vid);
+	}
+}
+
+static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge_mcast *brmctx,
+						    struct net_bridge_mcast_port *pmctx,
 						    struct net_bridge_port_group *pg,
 						    __be32 ip_dst, __be32 group,
 						    bool with_srcs, bool over_lmqt,
@@ -714,11 +816,11 @@ static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br,
 	u16 lmqt_srcs = 0;
 
 	igmp_hdr_size = sizeof(*ih);
-	if (br->multicast_igmp_version == 3) {
+	if (brmctx->multicast_igmp_version == 3) {
 		igmp_hdr_size = sizeof(*ihv3);
 		if (pg && with_srcs) {
-			lmqt = now + (br->multicast_last_member_interval *
-				      br->multicast_last_member_count);
+			lmqt = now + (brmctx->multicast_last_member_interval *
+				      brmctx->multicast_last_member_count);
 			hlist_for_each_entry(ent, &pg->src_list, node) {
 				if (over_lmqt == time_after(ent->timer.expires,
 							    lmqt) &&
@@ -734,19 +836,20 @@ static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br,
 
 	pkt_size = sizeof(*eth) + sizeof(*iph) + 4 + igmp_hdr_size;
 	if ((p && pkt_size > p->dev->mtu) ||
-	    pkt_size > br->dev->mtu)
+	    pkt_size > brmctx->br->dev->mtu)
 		return NULL;
 
-	skb = netdev_alloc_skb_ip_align(br->dev, pkt_size);
+	skb = netdev_alloc_skb_ip_align(brmctx->br->dev, pkt_size);
 	if (!skb)
 		goto out;
 
+	__br_multicast_query_handle_vlan(brmctx, pmctx, skb);
 	skb->protocol = htons(ETH_P_IP);
 
 	skb_reset_mac_header(skb);
 	eth = eth_hdr(skb);
 
-	ether_addr_copy(eth->h_source, br->dev->dev_addr);
+	ether_addr_copy(eth->h_source, brmctx->br->dev->dev_addr);
 	ip_eth_mc_map(ip_dst, eth->h_dest);
 	eth->h_proto = htons(ETH_P_IP);
 	skb_put(skb, sizeof(*eth));
@@ -762,8 +865,8 @@ static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br,
 	iph->frag_off = htons(IP_DF);
 	iph->ttl = 1;
 	iph->protocol = IPPROTO_IGMP;
-	iph->saddr = br_opt_get(br, BROPT_MULTICAST_QUERY_USE_IFADDR) ?
-		     inet_select_addr(br->dev, 0, RT_SCOPE_LINK) : 0;
+	iph->saddr = br_opt_get(brmctx->br, BROPT_MULTICAST_QUERY_USE_IFADDR) ?
+		     inet_select_addr(brmctx->br->dev, 0, RT_SCOPE_LINK) : 0;
 	iph->daddr = ip_dst;
 	((u8 *)&iph[1])[0] = IPOPT_RA;
 	((u8 *)&iph[1])[1] = 4;
@@ -775,12 +878,12 @@ static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br,
 	skb_set_transport_header(skb, skb->len);
 	*igmp_type = IGMP_HOST_MEMBERSHIP_QUERY;
 
-	switch (br->multicast_igmp_version) {
+	switch (brmctx->multicast_igmp_version) {
 	case 2:
 		ih = igmp_hdr(skb);
 		ih->type = IGMP_HOST_MEMBERSHIP_QUERY;
-		ih->code = (group ? br->multicast_last_member_interval :
-				    br->multicast_query_response_interval) /
+		ih->code = (group ? brmctx->multicast_last_member_interval :
+				    brmctx->multicast_query_response_interval) /
 			   (HZ / IGMP_TIMER_SCALE);
 		ih->group = group;
 		ih->csum = 0;
@@ -790,11 +893,11 @@ static struct sk_buff *br_ip4_multicast_alloc_query(struct net_bridge *br,
 	case 3:
 		ihv3 = igmpv3_query_hdr(skb);
 		ihv3->type = IGMP_HOST_MEMBERSHIP_QUERY;
-		ihv3->code = (group ? br->multicast_last_member_interval :
-				      br->multicast_query_response_interval) /
+		ihv3->code = (group ? brmctx->multicast_last_member_interval :
+				      brmctx->multicast_query_response_interval) /
 			     (HZ / IGMP_TIMER_SCALE);
 		ihv3->group = group;
-		ihv3->qqic = br->multicast_query_interval / HZ;
+		ihv3->qqic = brmctx->multicast_query_interval / HZ;
 		ihv3->nsrcs = htons(lmqt_srcs);
 		ihv3->resv = 0;
 		ihv3->suppress = sflag;
@@ -837,7 +940,8 @@ out:
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
-static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
+static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge_mcast *brmctx,
+						    struct net_bridge_mcast_port *pmctx,
 						    struct net_bridge_port_group *pg,
 						    const struct in6_addr *ip6_dst,
 						    const struct in6_addr *group,
@@ -862,11 +966,11 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
 	u8 *hopopt;
 
 	mld_hdr_size = sizeof(*mldq);
-	if (br->multicast_mld_version == 2) {
+	if (brmctx->multicast_mld_version == 2) {
 		mld_hdr_size = sizeof(*mld2q);
 		if (pg && with_srcs) {
-			llqt = now + (br->multicast_last_member_interval *
-				      br->multicast_last_member_count);
+			llqt = now + (brmctx->multicast_last_member_interval *
+				      brmctx->multicast_last_member_count);
 			hlist_for_each_entry(ent, &pg->src_list, node) {
 				if (over_llqt == time_after(ent->timer.expires,
 							    llqt) &&
@@ -882,20 +986,21 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
 
 	pkt_size = sizeof(*eth) + sizeof(*ip6h) + 8 + mld_hdr_size;
 	if ((p && pkt_size > p->dev->mtu) ||
-	    pkt_size > br->dev->mtu)
+	    pkt_size > brmctx->br->dev->mtu)
 		return NULL;
 
-	skb = netdev_alloc_skb_ip_align(br->dev, pkt_size);
+	skb = netdev_alloc_skb_ip_align(brmctx->br->dev, pkt_size);
 	if (!skb)
 		goto out;
 
+	__br_multicast_query_handle_vlan(brmctx, pmctx, skb);
 	skb->protocol = htons(ETH_P_IPV6);
 
 	/* Ethernet header */
 	skb_reset_mac_header(skb);
 	eth = eth_hdr(skb);
 
-	ether_addr_copy(eth->h_source, br->dev->dev_addr);
+	ether_addr_copy(eth->h_source, brmctx->br->dev->dev_addr);
 	eth->h_proto = htons(ETH_P_IPV6);
 	skb_put(skb, sizeof(*eth));
 
@@ -908,14 +1013,14 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
 	ip6h->nexthdr = IPPROTO_HOPOPTS;
 	ip6h->hop_limit = 1;
 	ip6h->daddr = *ip6_dst;
-	if (ipv6_dev_get_saddr(dev_net(br->dev), br->dev, &ip6h->daddr, 0,
-			       &ip6h->saddr)) {
+	if (ipv6_dev_get_saddr(dev_net(brmctx->br->dev), brmctx->br->dev,
+			       &ip6h->daddr, 0, &ip6h->saddr)) {
 		kfree_skb(skb);
-		br_opt_toggle(br, BROPT_HAS_IPV6_ADDR, false);
+		br_opt_toggle(brmctx->br, BROPT_HAS_IPV6_ADDR, false);
 		return NULL;
 	}
 
-	br_opt_toggle(br, BROPT_HAS_IPV6_ADDR, true);
+	br_opt_toggle(brmctx->br, BROPT_HAS_IPV6_ADDR, true);
 	ipv6_eth_mc_map(&ip6h->daddr, eth->h_dest);
 
 	hopopt = (u8 *)(ip6h + 1);
@@ -933,10 +1038,10 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
 	/* ICMPv6 */
 	skb_set_transport_header(skb, skb->len);
 	interval = ipv6_addr_any(group) ?
-			br->multicast_query_response_interval :
-			br->multicast_last_member_interval;
+			brmctx->multicast_query_response_interval :
+			brmctx->multicast_last_member_interval;
 	*igmp_type = ICMPV6_MGM_QUERY;
-	switch (br->multicast_mld_version) {
+	switch (brmctx->multicast_mld_version) {
 	case 1:
 		mldq = (struct mld_msg *)icmp6_hdr(skb);
 		mldq->mld_type = ICMPV6_MGM_QUERY;
@@ -959,7 +1064,7 @@ static struct sk_buff *br_ip6_multicast_alloc_query(struct net_bridge *br,
 		mld2q->mld2q_suppress = sflag;
 		mld2q->mld2q_qrv = 2;
 		mld2q->mld2q_nsrcs = htons(llqt_srcs);
-		mld2q->mld2q_qqic = br->multicast_query_interval / HZ;
+		mld2q->mld2q_qqic = brmctx->multicast_query_interval / HZ;
 		mld2q->mld2q_mca = *group;
 		csum = &mld2q->mld2q_cksum;
 		csum_start = (void *)mld2q;
@@ -1000,7 +1105,8 @@ out:
 }
 #endif
 
-static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br,
+static struct sk_buff *br_multicast_alloc_query(struct net_bridge_mcast *brmctx,
+						struct net_bridge_mcast_port *pmctx,
 						struct net_bridge_port_group *pg,
 						struct br_ip *ip_dst,
 						struct br_ip *group,
@@ -1013,7 +1119,7 @@ static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br,
 	switch (group->proto) {
 	case htons(ETH_P_IP):
 		ip4_dst = ip_dst ? ip_dst->dst.ip4 : htonl(INADDR_ALLHOSTS_GROUP);
-		return br_ip4_multicast_alloc_query(br, pg,
+		return br_ip4_multicast_alloc_query(brmctx, pmctx, pg,
 						    ip4_dst, group->dst.ip4,
 						    with_srcs, over_lmqt,
 						    sflag, igmp_type,
@@ -1028,7 +1134,7 @@ static struct sk_buff *br_multicast_alloc_query(struct net_bridge *br,
 			ipv6_addr_set(&ip6_dst, htonl(0xff020000), 0, 0,
 				      htonl(1));
 
-		return br_ip6_multicast_alloc_query(br, pg,
+		return br_ip6_multicast_alloc_query(brmctx, pmctx, pg,
 						    &ip6_dst, &group->dst.ip6,
 						    with_srcs, over_lmqt,
 						    sflag, igmp_type,
@@ -1206,7 +1312,8 @@ struct net_bridge_port_group *br_multicast_new_port_group(
 	return p;
 }
 
-void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify)
+void br_multicast_host_join(const struct net_bridge_mcast *brmctx,
+			    struct net_bridge_mdb_entry *mp, bool notify)
 {
 	if (!mp->host_joined) {
 		mp->host_joined = true;
@@ -1219,7 +1326,7 @@ void br_multicast_host_join(struct net_bridge_mdb_entry *mp, bool notify)
 	if (br_group_is_l2(&mp->addr))
 		return;
 
-	mod_timer(&mp->timer, jiffies + mp->br->multicast_membership_interval);
+	mod_timer(&mp->timer, jiffies + brmctx->multicast_membership_interval);
 }
 
 void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify)
@@ -1235,8 +1342,8 @@ void br_multicast_host_leave(struct net_bridge_mdb_entry *mp, bool notify)
 }
 
 static struct net_bridge_port_group *
-__br_multicast_add_group(struct net_bridge *br,
-			 struct net_bridge_port *port,
+__br_multicast_add_group(struct net_bridge_mcast *brmctx,
+			 struct net_bridge_mcast_port *pmctx,
 			 struct br_ip *group,
 			 const unsigned char *src,
 			 u8 filter_mode,
@@ -1248,29 +1355,28 @@ __br_multicast_add_group(struct net_bridge *br,
 	struct net_bridge_mdb_entry *mp;
 	unsigned long now = jiffies;
 
-	if (!netif_running(br->dev) ||
-	    (port && port->state == BR_STATE_DISABLED))
+	if (!br_multicast_ctx_should_use(brmctx, pmctx))
 		goto out;
 
-	mp = br_multicast_new_group(br, group);
+	mp = br_multicast_new_group(brmctx->br, group);
 	if (IS_ERR(mp))
 		return ERR_CAST(mp);
 
-	if (!port) {
-		br_multicast_host_join(mp, true);
+	if (!pmctx) {
+		br_multicast_host_join(brmctx, mp, true);
 		goto out;
 	}
 
 	for (pp = &mp->ports;
-	     (p = mlock_dereference(*pp, br)) != NULL;
+	     (p = mlock_dereference(*pp, brmctx->br)) != NULL;
 	     pp = &p->next) {
-		if (br_port_group_equal(p, port, src))
+		if (br_port_group_equal(p, pmctx->port, src))
 			goto found;
-		if ((unsigned long)p->key.port < (unsigned long)port)
+		if ((unsigned long)p->key.port < (unsigned long)pmctx->port)
 			break;
 	}
 
-	p = br_multicast_new_port_group(port, group, *pp, 0, src,
+	p = br_multicast_new_port_group(pmctx->port, group, *pp, 0, src,
 					filter_mode, RTPROT_KERNEL);
 	if (unlikely(!p)) {
 		p = ERR_PTR(-ENOMEM);
@@ -1279,18 +1385,19 @@ __br_multicast_add_group(struct net_bridge *br,
 	rcu_assign_pointer(*pp, p);
 	if (blocked)
 		p->flags |= MDB_PG_FLAGS_BLOCKED;
-	br_mdb_notify(br->dev, mp, p, RTM_NEWMDB);
+	br_mdb_notify(brmctx->br->dev, mp, p, RTM_NEWMDB);
 
 found:
 	if (igmpv2_mldv1)
-		mod_timer(&p->timer, now + br->multicast_membership_interval);
+		mod_timer(&p->timer,
+			  now + brmctx->multicast_membership_interval);
 
 out:
 	return p;
 }
 
-static int br_multicast_add_group(struct net_bridge *br,
-				  struct net_bridge_port *port,
+static int br_multicast_add_group(struct net_bridge_mcast *brmctx,
+				  struct net_bridge_mcast_port *pmctx,
 				  struct br_ip *group,
 				  const unsigned char *src,
 				  u8 filter_mode,
@@ -1299,18 +1406,18 @@ static int br_multicast_add_group(struct net_bridge *br,
 	struct net_bridge_port_group *pg;
 	int err;
 
-	spin_lock(&br->multicast_lock);
-	pg = __br_multicast_add_group(br, port, group, src, filter_mode,
+	spin_lock(&brmctx->br->multicast_lock);
+	pg = __br_multicast_add_group(brmctx, pmctx, group, src, filter_mode,
 				      igmpv2_mldv1, false);
 	/* NULL is considered valid for host joined groups */
 	err = PTR_ERR_OR_ZERO(pg);
-	spin_unlock(&br->multicast_lock);
+	spin_unlock(&brmctx->br->multicast_lock);
 
 	return err;
 }
 
-static int br_ip4_multicast_add_group(struct net_bridge *br,
-				      struct net_bridge_port *port,
+static int br_ip4_multicast_add_group(struct net_bridge_mcast *brmctx,
+				      struct net_bridge_mcast_port *pmctx,
 				      __be32 group,
 				      __u16 vid,
 				      const unsigned char *src,
@@ -1328,13 +1435,13 @@ static int br_ip4_multicast_add_group(struct net_bridge *br,
 	br_group.vid = vid;
 	filter_mode = igmpv2 ? MCAST_EXCLUDE : MCAST_INCLUDE;
 
-	return br_multicast_add_group(br, port, &br_group, src, filter_mode,
-				      igmpv2);
+	return br_multicast_add_group(brmctx, pmctx, &br_group, src,
+				      filter_mode, igmpv2);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
-static int br_ip6_multicast_add_group(struct net_bridge *br,
-				      struct net_bridge_port *port,
+static int br_ip6_multicast_add_group(struct net_bridge_mcast *brmctx,
+				      struct net_bridge_mcast_port *pmctx,
 				      const struct in6_addr *group,
 				      __u16 vid,
 				      const unsigned char *src,
@@ -1352,8 +1459,8 @@ static int br_ip6_multicast_add_group(struct net_bridge *br,
 	br_group.vid = vid;
 	filter_mode = mldv1 ? MCAST_EXCLUDE : MCAST_INCLUDE;
 
-	return br_multicast_add_group(br, port, &br_group, src, filter_mode,
-				      mldv1);
+	return br_multicast_add_group(brmctx, pmctx, &br_group, src,
+				      filter_mode, mldv1);
 }
 #endif
 
@@ -1366,52 +1473,54 @@ static bool br_multicast_rport_del(struct hlist_node *rlist)
 	return true;
 }
 
-static bool br_ip4_multicast_rport_del(struct net_bridge_port *p)
+static bool br_ip4_multicast_rport_del(struct net_bridge_mcast_port *pmctx)
 {
-	return br_multicast_rport_del(&p->ip4_rlist);
+	return br_multicast_rport_del(&pmctx->ip4_rlist);
 }
 
-static bool br_ip6_multicast_rport_del(struct net_bridge_port *p)
+static bool br_ip6_multicast_rport_del(struct net_bridge_mcast_port *pmctx)
 {
 #if IS_ENABLED(CONFIG_IPV6)
-	return br_multicast_rport_del(&p->ip6_rlist);
+	return br_multicast_rport_del(&pmctx->ip6_rlist);
 #else
 	return false;
 #endif
 }
 
-static void br_multicast_router_expired(struct net_bridge_port *port,
+static void br_multicast_router_expired(struct net_bridge_mcast_port *pmctx,
 					struct timer_list *t,
 					struct hlist_node *rlist)
 {
-	struct net_bridge *br = port->br;
+	struct net_bridge *br = pmctx->port->br;
 	bool del;
 
 	spin_lock(&br->multicast_lock);
-	if (port->multicast_router == MDB_RTR_TYPE_DISABLED ||
-	    port->multicast_router == MDB_RTR_TYPE_PERM ||
+	if (pmctx->multicast_router == MDB_RTR_TYPE_DISABLED ||
+	    pmctx->multicast_router == MDB_RTR_TYPE_PERM ||
 	    timer_pending(t))
 		goto out;
 
 	del = br_multicast_rport_del(rlist);
-	br_multicast_rport_del_notify(port, del);
+	br_multicast_rport_del_notify(pmctx, del);
 out:
 	spin_unlock(&br->multicast_lock);
 }
 
 static void br_ip4_multicast_router_expired(struct timer_list *t)
 {
-	struct net_bridge_port *port = from_timer(port, t, ip4_mc_router_timer);
+	struct net_bridge_mcast_port *pmctx = from_timer(pmctx, t,
+							 ip4_mc_router_timer);
 
-	br_multicast_router_expired(port, t, &port->ip4_rlist);
+	br_multicast_router_expired(pmctx, t, &pmctx->ip4_rlist);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
 static void br_ip6_multicast_router_expired(struct timer_list *t)
 {
-	struct net_bridge_port *port = from_timer(port, t, ip6_mc_router_timer);
+	struct net_bridge_mcast_port *pmctx = from_timer(pmctx, t,
+							 ip6_mc_router_timer);
 
-	br_multicast_router_expired(port, t, &port->ip6_rlist);
+	br_multicast_router_expired(pmctx, t, &pmctx->ip6_rlist);
 }
 #endif
 
@@ -1428,80 +1537,86 @@ static void br_mc_router_state_change(struct net_bridge *p,
 	switchdev_port_attr_set(p->dev, &attr, NULL);
 }
 
-static void br_multicast_local_router_expired(struct net_bridge *br,
+static void br_multicast_local_router_expired(struct net_bridge_mcast *brmctx,
 					      struct timer_list *timer)
 {
-	spin_lock(&br->multicast_lock);
-	if (br->multicast_router == MDB_RTR_TYPE_DISABLED ||
-	    br->multicast_router == MDB_RTR_TYPE_PERM ||
-	    br_ip4_multicast_is_router(br) ||
-	    br_ip6_multicast_is_router(br))
+	spin_lock(&brmctx->br->multicast_lock);
+	if (brmctx->multicast_router == MDB_RTR_TYPE_DISABLED ||
+	    brmctx->multicast_router == MDB_RTR_TYPE_PERM ||
+	    br_ip4_multicast_is_router(brmctx) ||
+	    br_ip6_multicast_is_router(brmctx))
 		goto out;
 
-	br_mc_router_state_change(br, false);
+	br_mc_router_state_change(brmctx->br, false);
 out:
-	spin_unlock(&br->multicast_lock);
+	spin_unlock(&brmctx->br->multicast_lock);
 }
 
 static void br_ip4_multicast_local_router_expired(struct timer_list *t)
 {
-	struct net_bridge *br = from_timer(br, t, ip4_mc_router_timer);
+	struct net_bridge_mcast *brmctx = from_timer(brmctx, t,
+						     ip4_mc_router_timer);
 
-	br_multicast_local_router_expired(br, t);
+	br_multicast_local_router_expired(brmctx, t);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
 static void br_ip6_multicast_local_router_expired(struct timer_list *t)
 {
-	struct net_bridge *br = from_timer(br, t, ip6_mc_router_timer);
+	struct net_bridge_mcast *brmctx = from_timer(brmctx, t,
+						     ip6_mc_router_timer);
 
-	br_multicast_local_router_expired(br, t);
+	br_multicast_local_router_expired(brmctx, t);
 }
 #endif
 
-static void br_multicast_querier_expired(struct net_bridge *br,
+static void br_multicast_querier_expired(struct net_bridge_mcast *brmctx,
 					 struct bridge_mcast_own_query *query)
 {
-	spin_lock(&br->multicast_lock);
-	if (!netif_running(br->dev) || !br_opt_get(br, BROPT_MULTICAST_ENABLED))
+	spin_lock(&brmctx->br->multicast_lock);
+	if (!netif_running(brmctx->br->dev) ||
+	    br_multicast_ctx_vlan_global_disabled(brmctx) ||
+	    !br_opt_get(brmctx->br, BROPT_MULTICAST_ENABLED))
 		goto out;
 
-	br_multicast_start_querier(br, query);
+	br_multicast_start_querier(brmctx, query);
 
 out:
-	spin_unlock(&br->multicast_lock);
+	spin_unlock(&brmctx->br->multicast_lock);
 }
 
 static void br_ip4_multicast_querier_expired(struct timer_list *t)
 {
-	struct net_bridge *br = from_timer(br, t, ip4_other_query.timer);
+	struct net_bridge_mcast *brmctx = from_timer(brmctx, t,
+						     ip4_other_query.timer);
 
-	br_multicast_querier_expired(br, &br->ip4_own_query);
+	br_multicast_querier_expired(brmctx, &brmctx->ip4_own_query);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
 static void br_ip6_multicast_querier_expired(struct timer_list *t)
 {
-	struct net_bridge *br = from_timer(br, t, ip6_other_query.timer);
+	struct net_bridge_mcast *brmctx = from_timer(brmctx, t,
+						     ip6_other_query.timer);
 
-	br_multicast_querier_expired(br, &br->ip6_own_query);
+	br_multicast_querier_expired(brmctx, &brmctx->ip6_own_query);
 }
 #endif
 
-static void br_multicast_select_own_querier(struct net_bridge *br,
+static void br_multicast_select_own_querier(struct net_bridge_mcast *brmctx,
 					    struct br_ip *ip,
 					    struct sk_buff *skb)
 {
 	if (ip->proto == htons(ETH_P_IP))
-		br->ip4_querier.addr.src.ip4 = ip_hdr(skb)->saddr;
+		brmctx->ip4_querier.addr.src.ip4 = ip_hdr(skb)->saddr;
 #if IS_ENABLED(CONFIG_IPV6)
 	else
-		br->ip6_querier.addr.src.ip6 = ipv6_hdr(skb)->saddr;
+		brmctx->ip6_querier.addr.src.ip6 = ipv6_hdr(skb)->saddr;
 #endif
 }
 
-static void __br_multicast_send_query(struct net_bridge *br,
-				      struct net_bridge_port *port,
+static void __br_multicast_send_query(struct net_bridge_mcast *brmctx,
+				      struct net_bridge_mcast_port *pmctx,
 				      struct net_bridge_port_group *pg,
 				      struct br_ip *ip_dst,
 				      struct br_ip *group,
@@ -1513,19 +1628,22 @@ static void __br_multicast_send_query(struct net_bridge *br,
 	struct sk_buff *skb;
 	u8 igmp_type;
 
+	if (!br_multicast_ctx_should_use(brmctx, pmctx))
+		return;
+
 again_under_lmqt:
-	skb = br_multicast_alloc_query(br, pg, ip_dst, group, with_srcs,
-				       over_lmqt, sflag, &igmp_type,
+	skb = br_multicast_alloc_query(brmctx, pmctx, pg, ip_dst, group,
+				       with_srcs, over_lmqt, sflag, &igmp_type,
 				       need_rexmit);
 	if (!skb)
 		return;
 
-	if (port) {
-		skb->dev = port->dev;
-		br_multicast_count(br, port, skb, igmp_type,
+	if (pmctx) {
+		skb->dev = pmctx->port->dev;
+		br_multicast_count(brmctx->br, pmctx->port, skb, igmp_type,
 				   BR_MCAST_DIR_TX);
 		NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT,
-			dev_net(port->dev), NULL, skb, NULL, skb->dev,
+			dev_net(pmctx->port->dev), NULL, skb, NULL, skb->dev,
 			br_dev_queue_push_xmit);
 
 		if (over_lmqt && with_srcs && sflag) {
@@ -1533,35 +1651,35 @@ again_under_lmqt:
 			goto again_under_lmqt;
 		}
 	} else {
-		br_multicast_select_own_querier(br, group, skb);
-		br_multicast_count(br, port, skb, igmp_type,
+		br_multicast_select_own_querier(brmctx, group, skb);
+		br_multicast_count(brmctx->br, NULL, skb, igmp_type,
 				   BR_MCAST_DIR_RX);
 		netif_rx(skb);
 	}
 }
 
-static void br_multicast_send_query(struct net_bridge *br,
-				    struct net_bridge_port *port,
+static void br_multicast_send_query(struct net_bridge_mcast *brmctx,
+				    struct net_bridge_mcast_port *pmctx,
 				    struct bridge_mcast_own_query *own_query)
 {
 	struct bridge_mcast_other_query *other_query = NULL;
 	struct br_ip br_group;
 	unsigned long time;
 
-	if (!netif_running(br->dev) ||
-	    !br_opt_get(br, BROPT_MULTICAST_ENABLED) ||
-	    !br_opt_get(br, BROPT_MULTICAST_QUERIER))
+	if (!br_multicast_ctx_should_use(brmctx, pmctx) ||
+	    !br_opt_get(brmctx->br, BROPT_MULTICAST_ENABLED) ||
+	    !br_opt_get(brmctx->br, BROPT_MULTICAST_QUERIER))
 		return;
 
 	memset(&br_group.dst, 0, sizeof(br_group.dst));
 
-	if (port ? (own_query == &port->ip4_own_query) :
-		   (own_query == &br->ip4_own_query)) {
-		other_query = &br->ip4_other_query;
+	if (pmctx ? (own_query == &pmctx->ip4_own_query) :
+		    (own_query == &brmctx->ip4_own_query)) {
+		other_query = &brmctx->ip4_other_query;
 		br_group.proto = htons(ETH_P_IP);
 #if IS_ENABLED(CONFIG_IPV6)
 	} else {
-		other_query = &br->ip6_other_query;
+		other_query = &brmctx->ip6_other_query;
 		br_group.proto = htons(ETH_P_IPV6);
 #endif
 	}
@@ -1569,31 +1687,32 @@ static void br_multicast_send_query(struct net_bridge *br,
 	if (!other_query || timer_pending(&other_query->timer))
 		return;
 
-	__br_multicast_send_query(br, port, NULL, NULL, &br_group, false, 0,
-				  NULL);
+	__br_multicast_send_query(brmctx, pmctx, NULL, NULL, &br_group, false,
+				  0, NULL);
 
 	time = jiffies;
-	time += own_query->startup_sent < br->multicast_startup_query_count ?
-		br->multicast_startup_query_interval :
-		br->multicast_query_interval;
+	time += own_query->startup_sent < brmctx->multicast_startup_query_count ?
+		brmctx->multicast_startup_query_interval :
+		brmctx->multicast_query_interval;
 	mod_timer(&own_query->timer, time);
 }
 
 static void
-br_multicast_port_query_expired(struct net_bridge_port *port,
+br_multicast_port_query_expired(struct net_bridge_mcast_port *pmctx,
 				struct bridge_mcast_own_query *query)
 {
-	struct net_bridge *br = port->br;
+	struct net_bridge *br = pmctx->port->br;
+	struct net_bridge_mcast *brmctx;
 
 	spin_lock(&br->multicast_lock);
-	if (port->state == BR_STATE_DISABLED ||
-	    port->state == BR_STATE_BLOCKING)
+	if (br_multicast_port_ctx_state_stopped(pmctx))
 		goto out;
 
-	if (query->startup_sent < br->multicast_startup_query_count)
+	brmctx = br_multicast_port_ctx_get_global(pmctx);
+	if (query->startup_sent < brmctx->multicast_startup_query_count)
 		query->startup_sent++;
 
-	br_multicast_send_query(port->br, port, query);
+	br_multicast_send_query(brmctx, pmctx, query);
 
 out:
 	spin_unlock(&br->multicast_lock);
@@ -1601,17 +1720,19 @@ out:
 
 static void br_ip4_multicast_port_query_expired(struct timer_list *t)
 {
-	struct net_bridge_port *port = from_timer(port, t, ip4_own_query.timer);
+	struct net_bridge_mcast_port *pmctx = from_timer(pmctx, t,
+							 ip4_own_query.timer);
 
-	br_multicast_port_query_expired(port, &port->ip4_own_query);
+	br_multicast_port_query_expired(pmctx, &pmctx->ip4_own_query);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
 static void br_ip6_multicast_port_query_expired(struct timer_list *t)
 {
-	struct net_bridge_port *port = from_timer(port, t, ip6_own_query.timer);
+	struct net_bridge_mcast_port *pmctx = from_timer(pmctx, t,
+							 ip6_own_query.timer);
 
-	br_multicast_port_query_expired(port, &port->ip6_own_query);
+	br_multicast_port_query_expired(pmctx, &pmctx->ip6_own_query);
 }
 #endif
 
@@ -1620,6 +1741,8 @@ static void br_multicast_port_group_rexmit(struct timer_list *t)
 	struct net_bridge_port_group *pg = from_timer(pg, t, rexmit_timer);
 	struct bridge_mcast_other_query *other_query = NULL;
 	struct net_bridge *br = pg->key.port->br;
+	struct net_bridge_mcast_port *pmctx;
+	struct net_bridge_mcast *brmctx;
 	bool need_rexmit = false;
 
 	spin_lock(&br->multicast_lock);
@@ -1628,11 +1751,15 @@ static void br_multicast_port_group_rexmit(struct timer_list *t)
 	    !br_opt_get(br, BROPT_MULTICAST_QUERIER))
 		goto out;
 
+	pmctx = br_multicast_pg_to_port_ctx(pg);
+	if (!pmctx)
+		goto out;