[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, 9 insertions, 10 deletions

diff --git a/drivers/net/wan/syncppp.c b/drivers/net/wan/syncppp.c
index 5c71af6ea3a5..232ecba5340f 100644
--- a/drivers/net/wan/syncppp.c
+++ b/drivers/net/wan/syncppp.c
@@ -359,8 +359,10 @@ done:
  *      Handle transmit packets.
  */
  
-static int sppp_hard_header(struct sk_buff *skb, struct net_device *dev, __u16 type,
-                void *daddr, void *saddr, unsigned int len)
+static int sppp_hard_header(struct sk_buff *skb,
+                            struct net_device *dev, __u16 type,
+                            const void *daddr, const void *saddr,
+                            unsigned int len)
 {
         struct sppp *sp = (struct sppp *)sppp_of(dev);
         struct ppp_header *h;
@@ -392,10 +394,9 @@ static int sppp_hard_header(struct sk_buff *skb, struct net_device *dev, __u16 t
         return sizeof(struct ppp_header);
 }
 
-static int sppp_rebuild_header(struct sk_buff *skb)
-{
-        return 0;
-}
+static const struct header_ops sppp_header_ops = {
+        .create = sppp_hard_header,
+};
 
 /*
  * Send keepalive packets, every 10 seconds.
@@ -1098,8 +1099,8 @@ void sppp_attach(struct ppp_device *pd)
          *      hard_start_xmit.
          */
          
-        dev->hard_header = sppp_hard_header;
-        dev->rebuild_header = sppp_rebuild_header;
+        dev->header_ops = &sppp_header_ops;
+
         dev->tx_queue_len = 10;
         dev->type = ARPHRD_HDLC;
         dev->addr_len = 0;
@@ -1115,8 +1116,6 @@ void sppp_attach(struct ppp_device *pd)
         dev->stop = sppp_close;
 #endif  
         dev->change_mtu = sppp_change_mtu;
-        dev->hard_header_cache = NULL;
-        dev->header_cache_update = NULL;
         dev->flags = IFF_MULTICAST|IFF_POINTOPOINT|IFF_NOARP;
 }