[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, 6 insertions, 5 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 10bcb9f8da5c..c52df858d0be 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -897,8 +897,8 @@ out_unlock_bh:
 static void neigh_update_hhs(struct neighbour *neigh)
 {
         struct hh_cache *hh;
-        void (*update)(struct hh_cache*, struct net_device*, unsigned char *) =
-                neigh->dev->header_cache_update;
+        void (*update)(struct hh_cache*, const struct net_device*, const unsigned char *)
+                = neigh->dev->header_ops->cache_update;
 
         if (update) {
                 for (hh = neigh->hh; hh; hh = hh->hh_next) {
@@ -1095,7 +1095,8 @@ static void neigh_hh_init(struct neighbour *n, struct dst_entry *dst,
                 hh->hh_type = protocol;
                 atomic_set(&hh->hh_refcnt, 0);
                 hh->hh_next = NULL;
-                if (dev->hard_header_cache(n, hh)) {
+
+                if (dev->header_ops->cache(n, hh)) {
                         kfree(hh);
                         hh = NULL;
                 } else {
@@ -1127,7 +1128,7 @@ int neigh_compat_output(struct sk_buff *skb)
 
         if (dev_hard_header(skb, dev, ntohs(skb->protocol), NULL, NULL,
                             skb->len) < 0 &&
-            dev->rebuild_header(skb))
+            dev->header_ops->rebuild(skb))
                 return 0;
 
         return dev_queue_xmit(skb);
@@ -1149,7 +1150,7 @@ int neigh_resolve_output(struct sk_buff *skb)
         if (!neigh_event_send(neigh, skb)) {
                 int err;
                 struct net_device *dev = neigh->dev;
-                if (dev->hard_header_cache && !dst->hh) {
+                if (dev->header_ops->cache && !dst->hh) {
                         write_lock_bh(&neigh->lock);
                         if (!dst->hh)
                                 neigh_hh_init(neigh, dst, dst->ops->protocol);