--- zzzz-none-000/linux-4.9.218/net/bridge/br_ioctl.c	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ac-750/linux-4.9.218/net/bridge/br_ioctl.c	2022-11-30 09:46:20.000000000 +0000
@@ -105,6 +105,109 @@
 	return ret;
 }
 
+#ifdef CONFIG_MCAST_SNOOPING
+
+/* Set router port ioctl request */
+static int mcast_snoop_set_router_port(struct net_bridge *br, struct ifreq *rq)
+{
+	struct router_port rp;
+	struct net_bridge_port *port;
+	struct net_device *dev;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	if (copy_from_user((void *)&rp, rq->ifr_data, sizeof(struct router_port)))
+		return -EFAULT;
+
+	dev = dev_get_by_index(dev_net(br->dev), rp.if_index);
+	if (dev == NULL)
+		return -EINVAL;
+
+	port = br_port_get_rtnl(dev);
+	if (port == NULL) {
+		dev_put(dev);
+		return -ENODEV;
+	}
+
+	if (rp.type == IPV4) {
+		port->igmp_router_port = 1;
+		if (rp.expires) {
+			mod_timer(&port->igmp_router_timer, jiffies + rp.expires * HZ);
+		}
+	} else if (rp.type == IPV6) {
+		port->mld_router_port = 1;
+		if (rp.expires) {
+			mod_timer(&port->mld_router_timer, jiffies + rp.expires * HZ);
+		}
+	} else {
+		dev_put(dev);
+		return -EINVAL;
+	}
+
+	dev_put(dev);
+	return 0;
+}
+
+/* Add / delete multicast entry */
+static int add_del_mg_entry(struct net_bridge *br, struct ifreq *rq, int isadd)
+{
+	struct net_device *dev;
+	struct net_bridge_port *port;
+	struct br_grp_rec recbuf, *rec;
+	char *buf;
+	int nsrc = 0;
+	int ret;
+	int ifindex;
+
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+
+	/* Step 1. get src count from record */
+	if (copy_from_user((void *)&recbuf, rq->ifr_data, sizeof(struct br_grp_rec)))
+		return -EFAULT;
+
+	ifindex = recbuf.if_index;
+	nsrc = recbuf.nsrc;
+
+	/* allocate buffer large enough to accommodate the src list also */
+	buf = kmalloc(sizeof(struct br_grp_rec) + nsrc * sizeof(ipaddr_t), GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+
+	/* Step 2. now copy the entire record */
+	if (copy_from_user(buf, rq->ifr_data, sizeof(struct br_grp_rec) + nsrc * sizeof(ipaddr_t))) {
+		kfree(buf);
+		return -EFAULT;
+	}
+
+	rec = (struct br_grp_rec *)buf;
+
+	dev = dev_get_by_index(dev_net(br->dev), ifindex);
+	if (dev == NULL) {
+		kfree(buf);
+		return -EINVAL;
+	}
+
+	port = br_port_get_rtnl(dev);
+
+	if (port == NULL) {
+		dev_put(dev);
+		kfree(buf);
+		return -ENODEV;
+	}
+
+	if (isadd)
+		ret = br_mg_add_entry(port, &rec->gaddr, rec->filter_mode, rec->compat, rec->nsrc, rec->slist);
+	else
+		ret = br_mg_del_record(port, &rec->gaddr);
+
+	dev_put(dev);
+	kfree(buf);
+	return ret;
+}
+#endif /* CONFIG_MCAST_SNOOPING */
+
 /*
  * Legacy ioctl's through SIOCDEVPRIVATE
  * This interface is deprecated because it was too difficult to
@@ -394,7 +497,13 @@
 	case SIOCBRADDIF:
 	case SIOCBRDELIF:
 		return add_del_if(br, rq->ifr_ifindex, cmd == SIOCBRADDIF);
-
+#ifdef CONFIG_MCAST_SNOOPING
+	case SIOCBRADDMGREC:
+	case SIOCBRDELMGREC:
+		return add_del_mg_entry(br, rq, cmd == SIOCBRADDMGREC);
+	case SIOCBRSETROUTERPORT:
+		return mcast_snoop_set_router_port(br, rq);
+#endif /* CONFIG_MCAST_SNOOPING */
 	}
 
 	br_debug(br, "Bridge does not support ioctl 0x%x\n", cmd);