3 files changed, 34 insertions, 1 deletions

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 96ab1d1748d0..b4005f5b28f4 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -114,12 +114,20 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
 					if (op != p &&
 					    ether_addr_equal(op->dev->dev_addr,
 							     f->addr.addr) &&
-					    nbp_vlan_find(op, vid)) {
+					    (!vid || nbp_vlan_find(op, vid))) {
 						f->dst = op;
 						goto skip_delete;
 					}
 				}
 
+				/* maybe bridge device has same hw addr? */
+				if (ether_addr_equal(br->dev->dev_addr,
+						     f->addr.addr) &&
+				    (!vid || br_vlan_find(br, vid))) {
+					f->dst = NULL;
+					goto skip_delete;
+				}
+
 				/* delete old one */
 				fdb_delete(br, f);
 skip_delete:
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 939a59e15036..f91e1d9c8e92 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -585,6 +585,7 @@ struct sk_buff *br_handle_vlan(struct net_bridge *br,
 int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
 int br_vlan_delete(struct net_bridge *br, u16 vid);
 void br_vlan_flush(struct net_bridge *br);
+bool br_vlan_find(struct net_bridge *br, u16 vid);
 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
 int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
 int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
@@ -666,6 +667,11 @@ static inline void br_vlan_flush(struct net_bridge *br)
 {
 }
 
+static inline bool br_vlan_find(struct net_bridge *br, u16 vid)
+{
+	return false;
+}
+
 static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
 {
 	return -EOPNOTSUPP;
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index 4ca4d0a0151c..233ec1c6e9db 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -295,6 +295,25 @@ void br_vlan_flush(struct net_bridge *br)
 	__vlan_flush(pv);
 }
 
+bool br_vlan_find(struct net_bridge *br, u16 vid)
+{
+	struct net_port_vlans *pv;
+	bool found = false;
+
+	rcu_read_lock();
+	pv = rcu_dereference(br->vlan_info);
+
+	if (!pv)
+		goto out;
+
+	if (test_bit(vid, pv->vlan_bitmap))
+		found = true;
+
+out:
+	rcu_read_unlock();
+	return found;
+}
+
 int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val)
 {
 	if (!rtnl_trylock())