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[SK_BUFF]: Introduce skb_network_header()

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For the places where we need a pointer to the network header, it is still legal
to touch skb->nh.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
2007-04-10 20:50:43 -07:00
committed by David S. Miller
parent bbe735e424
commit d56f90a7c9
59 changed files with 258 additions and 185 deletions
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9
net/core/dev.c
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@ -1068,8 +1068,8 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
*/
skb_reset_mac_header(skb2);
if (skb2->nh.raw < skb2->data ||
skb2->nh.raw > skb2->tail) {
if (skb_network_header(skb2) < skb2->data ||
skb_network_header(skb2) > skb2->tail) {
if (net_ratelimit())
printk(KERN_CRIT "protocol %04x is "
"buggy, dev %s\n",
@ -1207,7 +1207,7 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
BUG_ON(skb_shinfo(skb)->frag_list);
skb_reset_mac_header(skb);
skb->mac_len = skb->nh.raw - skb->data;
skb->mac_len = skb->nh.raw - skb->mac.raw;
__skb_pull(skb, skb->mac_len);
if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
@ -1224,7 +1224,8 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
segs = ERR_PTR(err);
if (err || skb_gso_ok(skb, features))
break;
__skb_push(skb, skb->data - skb->nh.raw);
__skb_push(skb, (skb->data -
skb_network_header(skb)));
}
segs = ptype->gso_segment(skb, features);
break;