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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
drivers/net/ehea/ehea_main.c
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@@ -1263,7 +1263,7 @@ static inline void write_ip_start_end(struct ehea_swqe *swqe,
const struct sk_buff *skb)
{
swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
swqe->ip_end = (u8)(swqe->ip_start + skb->nh.iph->ihl * 4 - 1);
swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
}
static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
@@ -1300,7 +1300,7 @@ static void write_swqe2_TSO(struct sk_buff *skb,
/* copy only eth/ip/tcp headers to immediate data and
* the rest of skb->data to sg1entry
*/
headersize = ETH_HLEN + (skb->nh.iph->ihl * 4) + (skb->h.th->doff * 4);
headersize = ETH_HLEN + ip_hdrlen(skb) + (skb->h.th->doff * 4);
skb_data_size = skb->len - skb->data_len;