[NET]: Move hardware header operations out of netdevice.

Since hardware header operations are part of the protocol class
not the device instance, make them into a separate object and
save memory.

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

1 files changed, 12 insertions, 8 deletions

diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 6cdb97365e47..b7558ec81ed5 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -29,15 +29,19 @@
 #include <linux/random.h>
 
 #ifdef __KERNEL__
-extern int              eth_header(struct sk_buff *skb, struct net_device *dev,
-                                   unsigned short type, void *daddr,
-                                   void *saddr, unsigned len);
-extern int              eth_rebuild_header(struct sk_buff *skb);
 extern __be16           eth_type_trans(struct sk_buff *skb, struct net_device *dev);
-extern void             eth_header_cache_update(struct hh_cache *hh, struct net_device *dev,
-                                                unsigned char * haddr);
-extern int              eth_header_cache(struct neighbour *neigh,
-                                         struct hh_cache *hh);
+extern const struct header_ops eth_header_ops;
+
+extern int eth_header(struct sk_buff *skb, struct net_device *dev,
+                      unsigned short type,
+                      const void *daddr, const void *saddr, unsigned len);
+extern int eth_rebuild_header(struct sk_buff *skb);
+extern int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
+extern int eth_header_cache(const struct neighbour *neigh, struct hh_cache *hh);
+extern void eth_header_cache_update(struct hh_cache *hh,
+                                    const struct net_device *dev,
+                                    const unsigned char *haddr);
+
 
 extern struct net_device *alloc_etherdev_mq(int sizeof_priv, unsigned int queue_count);
 #define alloc_etherdev(sizeof_priv) alloc_etherdev_mq(sizeof_priv, 1)