net: Push protocol type directly down to header_ops->cache()

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 30f17e4..564d89f 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -308,7 +308,7 @@
 			   const void *saddr, unsigned len);
 	int	(*parse)(const struct sk_buff *skb, unsigned char *haddr);
 	int	(*rebuild)(struct sk_buff *skb);
-	int	(*cache)(const struct neighbour *neigh, struct hh_cache *hh);
+	int	(*cache)(const struct neighbour *neigh, struct hh_cache *hh, __be16 type);
 	void	(*cache_update)(struct hh_cache *hh,
 				const struct net_device *dev,
 				const unsigned char *haddr);