[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>
diff --git a/drivers/net/arcnet/capmode.c b/drivers/net/arcnet/capmode.c
index 6648558..6c764b6 100644
--- a/drivers/net/arcnet/capmode.c
+++ b/drivers/net/arcnet/capmode.c
@@ -122,10 +122,8 @@
}
skb_put(skb, length + ARC_HDR_SIZE + sizeof(int));
skb->dev = dev;
-
- pkt = (struct archdr *) skb->data;
-
- skb->mac.raw = skb->data;
+ skb_reset_mac_header(skb);
+ pkt = (struct archdr *)skb->mac.raw;
skb_pull(skb, ARC_HDR_SIZE);
/* up to sizeof(pkt->soft) has already been copied from the card */
@@ -270,9 +268,8 @@
skb_put(ackskb, length + ARC_HDR_SIZE );
ackskb->dev = dev;
- ackpkt = (struct archdr *) ackskb->data;
-
- ackskb->mac.raw = ackskb->data;
+ skb_reset_mac_header(ackskb);
+ ackpkt = (struct archdr *)ackskb->mac.raw;
/* skb_pull(ackskb, ARC_HDR_SIZE); */