--- zzzz-none-000/linux-4.4.271/net/bridge/br_device.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/net/bridge/br_device.c	2023-04-19 10:22:30.000000000 +0000
@@ -40,6 +40,8 @@
 	struct pcpu_sw_netstats *brstats = this_cpu_ptr(br->stats);
 	const struct nf_br_ops *nf_ops;
 	u16 vid = 0;
+	struct net_bridge_port *pdst;
+	br_get_dst_hook_t *get_dst_hook;
 
 	rcu_read_lock();
 	nf_ops = rcu_dereference(nf_br_ops);
@@ -61,9 +63,16 @@
 	if (!br_allowed_ingress(br, br_vlan_group_rcu(br), skb, &vid))
 		goto out;
 
+	get_dst_hook = rcu_dereference(br_get_dst_hook);
+
 	if (is_broadcast_ether_addr(dest))
 		br_flood_deliver(br, skb, false);
 	else if (is_multicast_ether_addr(dest)) {
+		br_multicast_handle_hook_t *multicast_handle_hook =
+			rcu_dereference(br_multicast_handle_hook);
+		if (!__br_get(multicast_handle_hook, true, NULL, skb))
+			goto out;
+
 		if (unlikely(netpoll_tx_running(dev))) {
 			br_flood_deliver(br, skb, false);
 			goto out;
@@ -79,10 +88,20 @@
 			br_multicast_deliver(mdst, skb);
 		else
 			br_flood_deliver(br, skb, false);
-	} else if ((dst = __br_fdb_get(br, dest, vid)) != NULL)
-		br_deliver(dst->dst, skb);
-	else
-		br_flood_deliver(br, skb, true);
+	} else {
+		pdst = __br_get(get_dst_hook, NULL, NULL, &skb);
+		if (pdst) {
+			if (!skb)
+				goto out;
+			br_deliver(pdst, skb);
+		} else {
+			dst = __br_fdb_get(br, dest, vid);
+			if (dst)
+				br_deliver(dst->dst, skb);
+			else
+				br_flood_deliver(br, skb, true);
+		}
+	}
 
 out:
 	rcu_read_unlock();
@@ -411,4 +430,5 @@
 	br_netfilter_rtable_init(br);
 	br_stp_timer_init(br);
 	br_multicast_init(br);
+	br_flood_rl_setup(br);
 }