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[IPSEC]: Move IP length/checksum setting out of transforms

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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>
This commit is contained in:
Herbert Xu
2007-10-10 15:45:52 -07:00
committed by David S. Miller
parent 87bdc48d30
commit ceb1eec829
14 changed files with 23 additions and 65 deletions
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5
net/ipv4/xfrm4_mode_tunnel.c
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@ -31,10 +31,7 @@ static inline void ipip6_ecn_decapsulate(struct iphdr *iph, struct sk_buff *skb)
/* Add encapsulation header.
*
* The top IP header will be constructed per RFC 2401. The following fields
* in it shall be filled in by x->type->output:
* tot_len
* check
* The top IP header will be constructed per RFC 2401.
*/
static int xfrm4_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
{