[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>

3 files changed, 3 insertions, 3 deletions

diff --git a/net/802/fddi.c b/net/802/fddi.c
index f8a0c9f6fec9..91dde41b5481 100644
--- a/net/802/fddi.c
+++ b/net/802/fddi.c
@@ -131,7 +131,7 @@ __be16 fddi_type_trans(struct sk_buff *skb, struct net_device *dev)
          */
 
         skb->dev = dev;
-        skb->mac.raw = skb->data;       /* point to frame control (FC) */
+        skb_reset_mac_header(skb);      /* point to frame control (FC) */
 
         if(fddi->hdr.llc_8022_1.dsap==0xe0)
         {
diff --git a/net/802/hippi.c b/net/802/hippi.c
index 138302c14ee6..d87190038edb 100644
--- a/net/802/hippi.c
+++ b/net/802/hippi.c
@@ -131,7 +131,7 @@ __be16 hippi_type_trans(struct sk_buff *skb, struct net_device *dev)
          * set the raw address here.
          */
         skb->dev = dev;
-        skb->mac.raw = skb->data;
+        skb_reset_mac_header(skb);
         hip = (struct hippi_hdr *)skb->mac.raw;
         skb_pull(skb, HIPPI_HLEN);
 
diff --git a/net/802/tr.c b/net/802/tr.c
index 987d91559bcc..eb2de0d16208 100644
--- a/net/802/tr.c
+++ b/net/802/tr.c
@@ -194,7 +194,7 @@ __be16 tr_type_trans(struct sk_buff *skb, struct net_device *dev)
         unsigned riflen=0;
 
         skb->dev = dev;
-        skb->mac.raw = skb->data;
+        skb_reset_mac_header(skb);
         trh = tr_hdr(skb);
 
         if(trh->saddr[0] & TR_RII)