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authorHerbert Xu <herbert@gondor.apana.org.au>2007-10-10 15:44:44 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:55:54 -0700
commit37fedd3aab6517daec628764c5d66dd8761fbe5f (patch)
tree12227aec3944168bff04173dccd580240f4496aa /net/ipv4/xfrm4_mode_transport.c
parent[IPSEC]: Set skb->data to payload in x->mode->output (diff)
downloadlinux-dev-37fedd3aab6517daec628764c5d66dd8761fbe5f.tar.xz
linux-dev-37fedd3aab6517daec628764c5d66dd8761fbe5f.zip
[IPSEC]: Use IPv6 calling convention as the convention for x->mode->output
The IPv6 calling convention for x->mode->output is more general and could help an eventual protocol-generic x->type->output implementation. This patch adopts it for IPv4 as well and modifies the IPv4 type output functions accordingly. It also rewrites the IPv6 mac/transport header calculation to be based off the network header where practical. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/xfrm4_mode_transport.c')
-rw-r--r--net/ipv4/xfrm4_mode_transport.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/net/ipv4/xfrm4_mode_transport.c b/net/ipv4/xfrm4_mode_transport.c
index 10499d2ec65e..fd840c7d75ea 100644
--- a/net/ipv4/xfrm4_mode_transport.c
+++ b/net/ipv4/xfrm4_mode_transport.c
@@ -17,17 +17,16 @@
*
* The IP header will be moved forward to make space for the encapsulation
* header.
- *
- * On exit, skb->h will be set to the start of the payload to be processed
- * by x->type->output and skb->nh will be set to the top IP header.
*/
static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
{
struct iphdr *iph = ip_hdr(skb);
int ihl = iph->ihl * 4;
- skb->transport_header = skb->network_header + ihl;
skb_set_network_header(skb, -x->props.header_len);
+ skb->mac_header = skb->network_header +
+ offsetof(struct iphdr, protocol);
+ skb->transport_header = skb->network_header + ihl;
__skb_pull(skb, ihl);
memmove(skb_network_header(skb), iph, ihl);
return 0;