Commit 9b361c13 authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

vlan: add helper which can be called to see if device is used by vlan 



also, remove unused vlan_info definition from header

CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: default avatarJiri Pirko <jiri@resnulli.us>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0c7517e9

include/linux/if_vlan.h

+7 −2
Original line number Diff line number Diff line
@@ -74,8 +74,6 @@ static inline struct vlan_ethhdr *vlan_eth_hdr(const struct sk_buff *skb) 
/* found in socket.c */

extern void vlan_ioctl_set(int (*hook)(struct net *, void __user *));



struct vlan_info;



static inline int is_vlan_dev(struct net_device *dev)

{

        return dev->priv_flags & IFF_802_1Q_VLAN;
@@ -101,6 +99,8 @@ extern int vlan_vids_add_by_dev(struct net_device *dev, 
				const struct net_device *by_dev);

extern void vlan_vids_del_by_dev(struct net_device *dev,

				 const struct net_device *by_dev);



extern bool vlan_uses_dev(const struct net_device *dev);

#else

static inline struct net_device *

__vlan_find_dev_deep(struct net_device *real_dev, u16 vlan_id)
@@ -151,6 +151,11 @@ static inline void vlan_vids_del_by_dev(struct net_device *dev, 
					const struct net_device *by_dev)

{

}



static inline bool vlan_uses_dev(const struct net_device *dev)

{

	return false;

}

#endif



/**

net/8021q/vlan_core.c

+6 −0
Original line number Diff line number Diff line
@@ -368,3 +368,9 @@ void vlan_vids_del_by_dev(struct net_device *dev, 
		vlan_vid_del(dev, vid_info->vid);

}

EXPORT_SYMBOL(vlan_vids_del_by_dev);



bool vlan_uses_dev(const struct net_device *dev)

{

	return rtnl_dereference(dev->vlan_info) ? true : false;

}

EXPORT_SYMBOL(vlan_uses_dev);