static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
{
	struct net_device *real_dev = vlan_dev_info(dev)->real_dev;

	if (change & IFF_ALLMULTI)
		dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
	if (change & IFF_PROMISC)
		dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
}
static void vlan_dev_change_rx_flags(struct net_device *dev, int change)
{
	struct net_device *real_dev = vlan_dev_info(dev)->real_dev;

	if (change & IFF_ALLMULTI)
		dev_set_allmulti(real_dev, dev->flags & IFF_ALLMULTI ? 1 : -1);
	if (change & IFF_PROMISC)
		dev_set_promiscuity(real_dev, dev->flags & IFF_PROMISC ? 1 : -1);
}