[NET]: Wrap hard_header_parse

Wrap the hard_header_parse function to simplify next step of
header_ops conversion.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 1 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b33d084712fa..aae9ec367f5d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -657,7 +657,7 @@ struct net_device
         void                    (*vlan_rx_kill_vid)(struct net_device *dev,
                                                     unsigned short vid);
 
-        int                     (*hard_header_parse)(struct sk_buff *skb,
+        int                     (*hard_header_parse)(const struct sk_buff *skb,
                                                      unsigned char *haddr);
         int                     (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
 #ifdef CONFIG_NETPOLL
@@ -809,6 +809,16 @@ static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
         return dev->hard_header(skb, dev, type, daddr, saddr, len);
 }
 
+static inline int dev_parse_header(const struct sk_buff *skb,
+                                   unsigned char *haddr)
+{
+        const struct net_device *dev = skb->dev;
+
+        if (!dev->hard_header_parse)
+                return 0;
+        return dev->hard_header_parse(skb, haddr);
+}
+
 typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
 extern int              register_gifconf(unsigned int family, gifconf_func_t * gifconf);
 static inline int unregister_gifconf(unsigned int family)