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Commit 348a1443 authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

vlan: introduce functions to do mass addition/deletion of vids by another device 



Introduce functions handy to copy vlan ids from one driver's list to
another.

Signed-off-by: default avatarJiri Pirko <jpirko@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5b9ea6e0

include/linux/if_vlan.h

+15 −0
Original line number Diff line number Diff line
@@ -97,6 +97,10 @@ extern struct sk_buff *vlan_untag(struct sk_buff *skb); 
extern int vlan_vid_add(struct net_device *dev, unsigned short vid);

extern void vlan_vid_del(struct net_device *dev, unsigned short vid);



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);

#else

static inline struct net_device *

__vlan_find_dev_deep(struct net_device *real_dev, u16 vlan_id)
@@ -136,6 +140,17 @@ static inline int vlan_vid_add(struct net_device *dev, unsigned short vid) 
static inline void vlan_vid_del(struct net_device *dev, unsigned short vid)

{

}



static inline int vlan_vids_add_by_dev(struct net_device *dev,

				       const struct net_device *by_dev)

{

	return 0;

}



static inline void vlan_vids_del_by_dev(struct net_device *dev,

					const struct net_device *by_dev)

{

}

#endif



/**

net/8021q/vlan_core.c

+44 −0
Original line number Diff line number Diff line
@@ -321,3 +321,47 @@ void vlan_vid_del(struct net_device *dev, unsigned short vid) 
	}

}

EXPORT_SYMBOL(vlan_vid_del);



int vlan_vids_add_by_dev(struct net_device *dev,

			 const struct net_device *by_dev)

{

	struct vlan_vid_info *vid_info;

	int err;



	ASSERT_RTNL();



	if (!by_dev->vlan_info)

		return 0;



	list_for_each_entry(vid_info, &by_dev->vlan_info->vid_list, list) {

		err = vlan_vid_add(dev, vid_info->vid);

		if (err)

			goto unwind;

	}

	return 0;



unwind:

	list_for_each_entry_continue_reverse(vid_info,

					     &by_dev->vlan_info->vid_list,

					     list) {

		vlan_vid_del(dev, vid_info->vid);

	}



	return err;

}

EXPORT_SYMBOL(vlan_vids_add_by_dev);



void vlan_vids_del_by_dev(struct net_device *dev,

			  const struct net_device *by_dev)

{

	struct vlan_vid_info *vid_info;



	ASSERT_RTNL();



	if (!by_dev->vlan_info)

		return;



	list_for_each_entry(vid_info, &by_dev->vlan_info->vid_list, list)

		vlan_vid_del(dev, vid_info->vid);

}

EXPORT_SYMBOL(vlan_vids_del_by_dev);