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[IP]: Introduce ip_hdrlen()

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For the common sequence "skb->nh.iph->ihl * 4", removing a good number of open
coded skb->nh.iph uses, now to go after the rest...

Just out of curiosity, here are the idioms found to get the same result:

skb->nh.iph->ihl << 2
skb->nh.iph->ihl<<2
skb->nh.iph->ihl * 4
skb->nh.iph->ihl*4
(skb->nh.iph)->ihl * sizeof(u32)

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
2007-03-12 20:09:15 -03:00
committed by David S. Miller
parent 0272ffc46f
commit c9bdd4b525
47 changed files with 145 additions and 141 deletions
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4
net/ipv4/ip_input.c
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@ -198,9 +198,7 @@ int ip_call_ra_chain(struct sk_buff *skb)
static inline int ip_local_deliver_finish(struct sk_buff *skb)
{
int ihl = skb->nh.iph->ihl*4;
__skb_pull(skb, ihl);
__skb_pull(skb, ip_hdrlen(skb));
/* Point into the IP datagram, just past the header. */
skb->h.raw = skb->data;