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[SK_BUFF]: Introduce skb_transport_header(skb)

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For the places where we need a pointer to the transport header, it is
still legal to touch skb->h.raw directly if just adding to,
subtracting from or setting it to another layer header.

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 2007-04-25 18:04:18 -07:00 • committed by David S. Miller
parent a27ef749e7
commit 9c70220b73
42 changed files with 129 additions and 102 deletions
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6
net/xfrm/xfrm_input.c
View file

@ -62,7 +62,7 @@ int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
case IPPROTO_COMP:
if (!pskb_may_pull(skb, sizeof(struct ip_comp_hdr)))
return -EINVAL;
*spi = htonl(ntohs(*(__be16*)(skb->h.raw + 2)));
*spi = htonl(ntohs(*(__be16*)(skb_transport_header(skb) + 2)));
*seq = 0;
return 0;
default:
@ -72,8 +72,8 @@ int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
if (!pskb_may_pull(skb, 16))
return -EINVAL;
*spi = *(__be32*)(skb->h.raw + offset);
*seq = *(__be32*)(skb->h.raw + offset_seq);
*spi = *(__be32*)(skb_transport_header(skb) + offset);
*seq = *(__be32*)(skb_transport_header(skb) + offset_seq);
return 0;
}
EXPORT_SYMBOL(xfrm_parse_spi);