[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, 10 insertions, 5 deletions

diff --git a/net/802/tr.c b/net/802/tr.c
index aa3c2e936abc..a2bd0f2e3af8 100644
--- a/net/802/tr.c
+++ b/net/802/tr.c
@@ -100,7 +100,7 @@ static inline unsigned long rif_hash(const unsigned char *addr)
 
 static int tr_header(struct sk_buff *skb, struct net_device *dev,
                      unsigned short type,
-                     void *daddr, void *saddr, unsigned len)
+                     const void *daddr, const void *saddr, unsigned len)
 {
         struct trh_hdr *trh;
         int hdr_len;
@@ -142,7 +142,7 @@ static int tr_header(struct sk_buff *skb, struct net_device *dev,
         if(daddr)
         {
                 memcpy(trh->daddr,daddr,dev->addr_len);
-                tr_source_route(skb,trh,dev);
+                tr_source_route(skb, trh, dev);
                 return(hdr_len);
         }
 
@@ -247,7 +247,8 @@ __be16 tr_type_trans(struct sk_buff *skb, struct net_device *dev)
  *      We try to do source routing...
  */
 
-void tr_source_route(struct sk_buff *skb,struct trh_hdr *trh,struct net_device *dev)
+void tr_source_route(struct sk_buff *skb,struct trh_hdr *trh,
+                     struct net_device *dev)
 {
         int slack;
         unsigned int hash;
@@ -592,14 +593,18 @@ static const struct file_operations rif_seq_fops = {
 
 #endif
 
+static const struct header_ops tr_header_ops = {
+        .create = tr_header,
+        .rebuild= tr_rebuild_header,
+};
+
 static void tr_setup(struct net_device *dev)
 {
         /*
          *      Configure and register
          */
 
-        dev->hard_header        = tr_header;
-        dev->rebuild_header     = tr_rebuild_header;
+        dev->header_ops = &tr_header_ops;
 
         dev->type               = ARPHRD_IEEE802_TR;
         dev->hard_header_len    = TR_HLEN;