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[IPSEC] esp: Remove NAT-T checksum invalidation for BEET 

I pointed this out back when this patch was first proposed but it looks like
it got lost along the way.

The checksum only needs to be ignored for NAT-T in transport mode where
we lose the original inner addresses due to NAT.  With BEET the inner
addresses will be intact so the checksum remains valid.

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 15:41:41 -07:00 committed by David S. Miller
parent f24e3d658c
commit 8bd1707504
1 changed files with 1 additions and 2 deletions
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3
net/ipv4/esp4.c
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@ -261,8 +261,7 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb)
* as per draft-ietf-ipsec-udp-encaps-06,
* section 3.1.2
*/
if (x->props.mode == XFRM_MODE_TRANSPORT ||
x->props.mode == XFRM_MODE_BEET)
if (x->props.mode == XFRM_MODE_TRANSPORT)
skb->ip_summed = CHECKSUM_UNNECESSARY;
}