[SK_BUFF]: Introduce skb_reset_transport_header(skb)
For the common, open coded 'skb->h.raw = skb->data' operation, so that we can
later turn skb->h.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 cases:
skb->h.raw = skb->data;
skb->h.raw = {skb_push|[__]skb_pull}()
The next ones 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/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 00fd31d..ebcc797 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -182,7 +182,8 @@
}
((struct iphdr*)work_buf)->protocol = ah->nexthdr;
skb->nh.raw += ah_hlen;
- skb->h.raw = memcpy(skb_network_header(skb), work_buf, ihl);
+ memcpy(skb_network_header(skb), work_buf, ihl);
+ skb->h.raw = skb->nh.raw;
__skb_pull(skb, ah_hlen + ihl);
return 0;