diff options
| author | Jiri Pirko <jpirko@redhat.com> | 2011-12-08 04:11:19 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-08 19:52:42 -0500 |
| commit | 348a1443cc4303c72cf1ee3b26e476fec8e7b5fa (patch) | |
| tree | da134720dcdf4ce0cf8ba0f49cd9ee6b5dd0036b | |
| parent | 5b9ea6e022e9ba0fe39cb349ac40361f78d5da5b (diff) | |
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: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/if_vlan.h | 15 | ||||
| -rw-r--r-- | net/8021q/vlan_core.c | 44 |
2 files changed, 59 insertions, 0 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index 0c9691305298..13aff1e2183b 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -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 /** diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c index 329e0313e01f..1414c931bd3f 100644 --- a/net/8021q/vlan_core.c +++ b/net/8021q/vlan_core.c @@ -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); |