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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: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2012-08-23 03:26:52 +00:00 committed by David S. Miller
parent 0c7517e9fa
commit 9b361c13ce
2 changed files with 13 additions and 2 deletions
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9
include/linux/if_vlan.h
View File

@ -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
/**

6
net/8021q/vlan_core.c
View File

@ -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);