+static void vlan_dev_set_rx_mode(struct net_device *vlan_dev)
+{
+ dev_mc_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev);
+ dev_unicast_sync(vlan_dev_info(vlan_dev)->real_dev, vlan_dev);
+}
+
+/*
+ * vlan network devices have devices nesting below it, and are a special
+ * "super class" of normal network devices; split their locks off into a
+ * separate class since they always nest.
+ */
+static struct lock_class_key vlan_netdev_xmit_lock_key;
+
+static const struct header_ops vlan_header_ops = {
+ .create = vlan_dev_hard_header,
+ .rebuild = vlan_dev_rebuild_header,
+ .parse = eth_header_parse,
+};
+
+static int vlan_dev_init(struct net_device *dev)
+{
+ struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
+ int subclass = 0;
+
+ /* IFF_BROADCAST|IFF_MULTICAST; ??? */
+ dev->flags = real_dev->flags & ~IFF_UP;
+ dev->iflink = real_dev->ifindex;
+ dev->state = (real_dev->state & ((1<<__LINK_STATE_NOCARRIER) |
+ (1<<__LINK_STATE_DORMANT))) |
+ (1<<__LINK_STATE_PRESENT);
+
+ /* ipv6 shared card related stuff */
+ dev->dev_id = real_dev->dev_id;
+
+ if (is_zero_ether_addr(dev->dev_addr))
+ memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len);
+ if (is_zero_ether_addr(dev->broadcast))
+ memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
+
+ if (real_dev->features & NETIF_F_HW_VLAN_TX) {
+ dev->header_ops = real_dev->header_ops;
+ dev->hard_header_len = real_dev->hard_header_len;
+ dev->hard_start_xmit = vlan_dev_hwaccel_hard_start_xmit;
+ } else {
+ dev->header_ops = &vlan_header_ops;
+ dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN;
+ dev->hard_start_xmit = vlan_dev_hard_start_xmit;
+ }
+
+ if (real_dev->priv_flags & IFF_802_1Q_VLAN)
+ subclass = 1;
+
+ lockdep_set_class_and_subclass(&dev->_xmit_lock,
+ &vlan_netdev_xmit_lock_key, subclass);
+ return 0;
+}
+
+void vlan_setup(struct net_device *dev)