[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, 3 insertions, 3 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 73cb2d3e27d2..1225e751b3f1 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -401,14 +401,14 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
          * notable one here. This should really be fixed at the driver level.
          */
         skb_reserve(skb, LL_RESERVED_SPACE(dev));
-        skb->nh.raw = skb->data;
+        skb_reset_network_header(skb);
 
         /* Try to align data part correctly */
         if (dev->hard_header) {
                 skb->data -= dev->hard_header_len;
                 skb->tail -= dev->hard_header_len;
                 if (len < dev->hard_header_len)
-                        skb->nh.raw = skb->data;
+                        skb_reset_network_header(skb);
         }
 
         /* Returns -EFAULT on error */
@@ -768,7 +768,7 @@ static int packet_sendmsg(struct kiocb *iocb, struct socket *sock,
                 goto out_unlock;
 
         skb_reserve(skb, LL_RESERVED_SPACE(dev));
-        skb->nh.raw = skb->data;
+        skb_reset_network_header(skb);
 
         if (dev->hard_header) {
                 int res;