[SK_BUFF]: Introduce skb_reset_network_header(skb)

For the common, open coded 'skb->nh.raw = skb->data' operation, so that we can
later turn skb->nh.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/drivers/net/pppoe.c b/drivers/net/pppoe.c
index 3080a44b23ab..e94790632d55 100644
--- a/drivers/net/pppoe.c
+++ b/drivers/net/pppoe.c
@@ -799,7 +799,7 @@ static int pppoe_sendmsg(struct kiocb *iocb, struct socket *sock,
 
         /* Reserve space for headers. */
         skb_reserve(skb, dev->hard_header_len);
-        skb->nh.raw = skb->data;
+        skb_reset_network_header(skb);
 
         skb->dev = dev;
 
@@ -884,7 +884,7 @@ static int __pppoe_xmit(struct sock *sk, struct sk_buff *skb)
         memcpy(ph, &hdr, sizeof(struct pppoe_hdr));
         skb2->protocol = __constant_htons(ETH_P_PPP_SES);
 
-        skb2->nh.raw = skb2->data;
+        skb_reset_network_header(skb2);
 
         skb2->dev = dev;