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authorHerbert Xu <herbert@gondor.apana.org.au>2007-10-11 02:45:52 +0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-11 03:55:56 +0400
commitceb1eec8291175686d0208e66595ff83bc0624e2 (patch)
tree83a7fdc7d292f1dbb80f32563d9573810bfe6e42 /net/ipv4/xfrm4_output.c
parent87bdc48d304191313203df9b98d783e1ab5a55ab (diff)
downloadlinux-ceb1eec8291175686d0208e66595ff83bc0624e2.tar.xz
[IPSEC]: Move IP length/checksum setting out of transforms
This patch moves the setting of the IP length and checksum fields out of the transforms and into the xfrmX_output functions. This would help future efforts in merging the transforms themselves. It also adds an optimisation to ipcomp due to the fact that the transport offset is guaranteed to be zero. 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_output.c')
-rw-r--r--net/ipv4/xfrm4_output.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 04805c7d79c3..434ef302ba83 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -44,6 +44,7 @@ static inline int xfrm4_output_one(struct sk_buff *skb)
{
struct dst_entry *dst = skb->dst;
struct xfrm_state *x = dst->xfrm;
+ struct iphdr *iph;
int err;
if (x->props.mode == XFRM_MODE_TUNNEL) {
@@ -56,6 +57,10 @@ static inline int xfrm4_output_one(struct sk_buff *skb)
if (err)
goto error_nolock;
+ iph = ip_hdr(skb);
+ iph->tot_len = htons(skb->len);
+ ip_send_check(iph);
+
IPCB(skb)->flags |= IPSKB_XFRM_TRANSFORMED;
err = 0;