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[SK_BUFF]: Introduce skb_reset_transport_header(skb)

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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>
This commit is contained in:
Arnaldo Carvalho de Melo
2007-03-13 13:06:52 -03:00
committed by David S. Miller
parent 0660e03f6b
commit badff6d01a
49 changed files with 82 additions and 73 deletions
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3
net/ipv4/ah4.c
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@@ -182,7 +182,8 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
}
((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;