[SK_BUFF]: Introduce skb_reset_mac_header(skb)

For the common, open coded 'skb->mac.raw = skb->data' operation, so that we can
later turn skb->mac.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.

This one touches just the most simple case, next will handle the slightly more
"complex" cases.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 424d6d0e98f8..2fcaf5bc4a9c 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1066,7 +1066,7 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
                            set by sender, so that the second statement is
                            just protection against buggy protocols.
                          */
-                        skb2->mac.raw = skb2->data;
+                        skb_reset_mac_header(skb2);
 
                         if (skb2->nh.raw < skb2->data ||
                             skb2->nh.raw > skb2->tail) {
@@ -1206,7 +1206,7 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
 
         BUG_ON(skb_shinfo(skb)->frag_list);
 
-        skb->mac.raw = skb->data;
+        skb_reset_mac_header(skb);
         skb->mac_len = skb->nh.raw - skb->data;
         __skb_pull(skb, skb->mac_len);