2 files changed, 42 insertions, 5 deletions

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 6f142f03716d..733ec283ed1b 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -493,10 +493,48 @@ static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
         }
 }
 
+static int vlan_calculate_locking_subclass(struct net_device *real_dev)
+{
+        int subclass = 0;
+
+        while (is_vlan_dev(real_dev)) {
+                subclass++;
+                real_dev = vlan_dev_priv(real_dev)->real_dev;
+        }
+
+        return subclass;
+}
+
+static void vlan_dev_mc_sync(struct net_device *to, struct net_device *from)
+{
+        int err = 0, subclass;
+
+        subclass = vlan_calculate_locking_subclass(to);
+
+        spin_lock_nested(&to->addr_list_lock, subclass);
+        err = __hw_addr_sync(&to->mc, &from->mc, to->addr_len);
+        if (!err)
+                __dev_set_rx_mode(to);
+        spin_unlock(&to->addr_list_lock);
+}
+
+static void vlan_dev_uc_sync(struct net_device *to, struct net_device *from)
+{
+        int err = 0, subclass;
+
+        subclass = vlan_calculate_locking_subclass(to);
+
+        spin_lock_nested(&to->addr_list_lock, subclass);
+        err = __hw_addr_sync(&to->uc, &from->uc, to->addr_len);
+        if (!err)
+                __dev_set_rx_mode(to);
+        spin_unlock(&to->addr_list_lock);
+}
+
 static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
 {
-        dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
-        dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
+        vlan_dev_mc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
+        vlan_dev_uc_sync(vlan_dev_priv(vlan_dev)->real_dev, vlan_dev);
 }
 
 /*
@@ -608,9 +646,7 @@ static int vlan_dev_init(struct net_device *dev)
 
         SET_NETDEV_DEVTYPE(dev, &vlan_type);
 
-        if (is_vlan_dev(real_dev))
-                subclass = 1;
-
+        subclass = vlan_calculate_locking_subclass(dev);
         vlan_dev_set_lockdep_class(dev, subclass);
 
         vlan_dev_priv(dev)->vlan_pcpu_stats = netdev_alloc_pcpu_stats(struct vlan_pcpu_stats);
diff --git a/net/core/dev.c b/net/core/dev.c
index 5b3042e69f85..d2c8a06b3a98 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5238,6 +5238,7 @@ void __dev_set_rx_mode(struct net_device *dev)
         if (ops->ndo_set_rx_mode)
                 ops->ndo_set_rx_mode(dev);
 }
+EXPORT_SYMBOL(__dev_set_rx_mode);
 
 void dev_set_rx_mode(struct net_device *dev)
 {