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authorJiri Pirko <jpirko@redhat.com>2011-12-08 04:11:19 +0000
committerDavid S. Miller <davem@davemloft.net>2011-12-08 19:52:42 -0500
commit348a1443cc4303c72cf1ee3b26e476fec8e7b5fa (patch)
treeda134720dcdf4ce0cf8ba0f49cd9ee6b5dd0036b
parentvlan: introduce vid list with reference counting (diff)
downloadlinux-dev-348a1443cc4303c72cf1ee3b26e476fec8e7b5fa.tar.xz
linux-dev-348a1443cc4303c72cf1ee3b26e476fec8e7b5fa.zip
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.h15
-rw-r--r--net/8021q/vlan_core.c44
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);