[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>
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index a71d8e0..af476d2 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -91,7 +91,7 @@
break;
skb_reserve(nskb, 32);
skb_set_mac_header(nskb, -ETH_HLEN);
- nskb->nh.raw = nskb->data;
+ skb_reset_network_header(nskb);
iph = nskb->nh.iph;
memcpy(nskb->data, skb->nh.raw, doffset);
if (skb_copy_bits(skb,