1 files changed, 35 insertions, 6 deletions

diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 635e1faec412..affa27380b72 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -86,7 +86,6 @@ struct vlan_group {
                                             * the vlan is attached to.
                                             */
         unsigned int            nr_vlans;
-        int                     killall;
         struct hlist_node       hlist;  /* linked list */
         struct net_device **vlan_devices_arrays[VLAN_GROUP_ARRAY_SPLIT_PARTS];
         struct rcu_head         rcu;
@@ -111,6 +110,11 @@ static inline void vlan_group_set_device(struct vlan_group *vg,
         array[vlan_id % VLAN_GROUP_ARRAY_PART_LEN] = dev;
 }
 
+static inline int is_vlan_dev(struct net_device *dev)
+{
+        return dev->priv_flags & IFF_802_1Q_VLAN;
+}
+
 #define vlan_tx_tag_present(__skb)      ((__skb)->vlan_tci & VLAN_TAG_PRESENT)
 #define vlan_tx_tag_get(__skb)          ((__skb)->vlan_tci & ~VLAN_TAG_PRESENT)
 
@@ -132,7 +136,8 @@ extern u16 vlan_dev_vlan_id(const struct net_device *dev);
 
 extern int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
                              u16 vlan_tci, int polling);
-extern bool vlan_hwaccel_do_receive(struct sk_buff **skb);
+extern bool vlan_do_receive(struct sk_buff **skb);
+extern struct sk_buff *vlan_untag(struct sk_buff *skb);
 extern gro_result_t
 vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
                  unsigned int vlan_tci, struct sk_buff *skb);
@@ -166,13 +171,18 @@ static inline int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
         return NET_XMIT_SUCCESS;
 }
 
-static inline bool vlan_hwaccel_do_receive(struct sk_buff **skb)
+static inline bool vlan_do_receive(struct sk_buff **skb)
 {
         if ((*skb)->vlan_tci & VLAN_VID_MASK)
                 (*skb)->pkt_type = PACKET_OTHERHOST;
         return false;
 }
 
+static inline struct sk_buff *vlan_untag(struct sk_buff *skb)
+{
+        return skb;
+}
+
 static inline gro_result_t
 vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp,
                  unsigned int vlan_tci, struct sk_buff *skb)
@@ -215,7 +225,7 @@ static inline int vlan_hwaccel_receive_skb(struct sk_buff *skb,
 }
 
 /**
- * __vlan_put_tag - regular VLAN tag inserting
+ * vlan_insert_tag - regular VLAN tag inserting
  * @skb: skbuff to tag
  * @vlan_tci: VLAN TCI to insert
  *
@@ -224,8 +234,10 @@ static inline int vlan_hwaccel_receive_skb(struct sk_buff *skb,
  *
  * Following the skb_unshare() example, in case of error, the calling function
  * doesn't have to worry about freeing the original skb.
+ *
+ * Does not change skb->protocol so this function can be used during receive.
  */
-static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
+static inline struct sk_buff *vlan_insert_tag(struct sk_buff *skb, u16 vlan_tci)
 {
         struct vlan_ethhdr *veth;
 
@@ -245,8 +257,25 @@ static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
         /* now, the TCI */
         veth->h_vlan_TCI = htons(vlan_tci);
 
-        skb->protocol = htons(ETH_P_8021Q);
+        return skb;
+}
 
+/**
+ * __vlan_put_tag - regular VLAN tag inserting
+ * @skb: skbuff to tag
+ * @vlan_tci: VLAN TCI to insert
+ *
+ * Inserts the VLAN tag into @skb as part of the payload
+ * Returns a VLAN tagged skb. If a new skb is created, @skb is freed.
+ *
+ * Following the skb_unshare() example, in case of error, the calling function
+ * doesn't have to worry about freeing the original skb.
+ */
+static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
+{
+        skb = vlan_insert_tag(skb, vlan_tci);
+        if (skb)
+                skb->protocol = htons(ETH_P_8021Q);
         return skb;
 }