1 files changed, 102 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.12/642-bridge_port_isolate.patch b/target/linux/generic/patches-3.12/642-bridge_port_isolate.patch
new file mode 100644
index 0000000000..1d6b75c014
--- /dev/null
+++ b/target/linux/generic/patches-3.12/642-bridge_port_isolate.patch
@@ -0,0 +1,102 @@
+--- a/net/bridge/br_private.h
++++ b/net/bridge/br_private.h
+@@ -174,6 +174,7 @@ struct net_bridge_port
+ #define BR_ADMIN_COST		0x00000010
+ #define BR_LEARNING		0x00000020
+ #define BR_FLOOD		0x00000040
++#define BR_ISOLATE_MODE	0x00000020
+ 
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+ 	struct bridge_mcast_query	ip4_query;
+--- a/net/bridge/br_sysfs_if.c
++++ b/net/bridge/br_sysfs_if.c
+@@ -161,6 +161,22 @@ BRPORT_ATTR_FLAG(root_block, BR_ROOT_BLO
+ BRPORT_ATTR_FLAG(learning, BR_LEARNING);
+ BRPORT_ATTR_FLAG(unicast_flood, BR_FLOOD);
+ 
++static ssize_t show_isolate_mode(struct net_bridge_port *p, char *buf)
++{
++	int isolate_mode = (p->flags & BR_ISOLATE_MODE) ? 1 : 0;
++	return sprintf(buf, "%d\n", isolate_mode);
++}
++static ssize_t store_isolate_mode(struct net_bridge_port *p, unsigned long v)
++{
++	if (v)
++		p->flags |= BR_ISOLATE_MODE;
++	else
++		p->flags &= ~BR_ISOLATE_MODE;
++	return 0;
++}
++static BRPORT_ATTR(isolate_mode, S_IRUGO | S_IWUSR,
++		   show_isolate_mode, store_isolate_mode);
++
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+ static ssize_t show_multicast_router(struct net_bridge_port *p, char *buf)
+ {
+@@ -203,6 +219,7 @@ static const struct brport_attribute *br
+ 	&brport_attr_multicast_router,
+ 	&brport_attr_multicast_fast_leave,
+ #endif
++	&brport_attr_isolate_mode,
+ 	NULL
+ };
+ 
+--- a/net/bridge/br_input.c
++++ b/net/bridge/br_input.c
+@@ -119,8 +119,8 @@ int br_handle_frame_finish(struct sk_buf
+ 
+ 		unicast = false;
+ 		br->dev->stats.multicast++;
+-	} else if ((dst = __br_fdb_get(br, dest, vid)) &&
+-			dst->is_local) {
++	} else if ((p->flags & BR_ISOLATE_MODE) ||
++		   ((dst = __br_fdb_get(br, dest, vid)) && dst->is_local)) {
+ 		skb2 = skb;
+ 		/* Do not forward the packet since it's local. */
+ 		skb = NULL;
+--- a/net/bridge/br_forward.c
++++ b/net/bridge/br_forward.c
+@@ -119,7 +119,7 @@ void br_deliver(const struct net_bridge_
+ /* called with rcu_read_lock */
+ void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, struct sk_buff *skb0)
+ {
+-	if (should_deliver(to, skb)) {
++	if (should_deliver(to, skb) && !(to->flags & BR_ISOLATE_MODE)) {
+ 		if (skb0)
+ 			deliver_clone(to, skb, __br_forward);
+ 		else
+@@ -175,7 +175,7 @@ static void br_flood(struct net_bridge *
+ 		     struct sk_buff *skb0,
+ 		     void (*__packet_hook)(const struct net_bridge_port *p,
+ 					   struct sk_buff *skb),
+-		     bool unicast)
++		     				bool unicast, bool forward)
+ {
+ 	struct net_bridge_port *p;
+ 	struct net_bridge_port *prev;
+@@ -183,6 +183,8 @@ static void br_flood(struct net_bridge *
+ 	prev = NULL;
+ 
+ 	list_for_each_entry_rcu(p, &br->port_list, list) {
++		if (forward && (p->flags & BR_ISOLATE_MODE))
++			continue;
+ 		/* Do not flood unicast traffic to ports that turn it off */
+ 		if (unicast && !(p->flags & BR_FLOOD))
+ 			continue;
+@@ -209,14 +211,14 @@ out:
+ /* called with rcu_read_lock */
+ void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast)
+ {
+-	br_flood(br, skb, NULL, __br_deliver, unicast);
++	br_flood(br, skb, NULL, __br_deliver, unicast, false);
+ }
+ 
+ /* called under bridge lock */
+ void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
+ 		      struct sk_buff *skb2, bool unicast)
+ {
+-	br_flood(br, skb, skb2, __br_forward, unicast);
++	br_flood(br, skb, skb2, __br_forward, unicast, true);
+ }
+ 
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING