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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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6
include/linux/dccp.h
View file

@ -265,9 +265,9 @@ static inline struct dccp_hdr *dccp_hdr(const struct sk_buff *skb)
static inline struct dccp_hdr *dccp_zeroed_hdr(struct sk_buff *skb, int headlen)
{
skb->h.raw = skb_push(skb, headlen);
memset(skb->h.raw, 0, headlen);
return dccp_hdr(skb);
skb_push(skb, headlen);
skb_reset_transport_header(skb);
return memset(skb->h.raw, 0, headlen);
}
static inline struct dccp_hdr_ext *dccp_hdrx(const struct sk_buff *skb)