Commit 0369722f authored Aug 03, 2013 by nikolay@redhat.com Committed by David S. Miller Aug 05, 2013

vlan: make vlan_dev_real_dev work over stacked vlans



Sometimes we might have stacked vlans on top of each other, and we're
interested in the first non-vlan real device on the path, so transform
vlan_dev_real_dev to go over the stacked vlans and extract the first
non-vlan device.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent d9af2d67

net/8021q/vlan_core.c

+6 −1

Original line number	Original line	Diff line number	Diff line
	@@ -91,7 +91,12 @@ EXPORT_SYMBOL(__vlan_find_dev_deep);

	struct net_device vlan_dev_real_dev(const struct net_device dev)		struct net_device vlan_dev_real_dev(const struct net_device dev)
	{		{
	return vlan_dev_priv(dev)->real_dev;		struct net_device *ret = vlan_dev_priv(dev)->real_dev;

			while (is_vlan_dev(ret))
			ret = vlan_dev_priv(ret)->real_dev;

			return ret;
	}		}
	EXPORT_SYMBOL(vlan_dev_real_dev);		EXPORT_SYMBOL(vlan_dev_real_dev);