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authorHerbert Xu <herbert@gondor.apana.org.au>2007-10-10 15:41:41 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:55:53 -0700
commit8bd170750400bfa5e14c3dd2e2d0f305e1ab0e57 (patch)
treef8634014eb4a66bafdada8865df94713277b72c8 /net/ipv4
parentf24e3d658cf382f11a7aa7887fa99147bdc6fe0b (diff)
downloadlinux-8bd170750400bfa5e14c3dd2e2d0f305e1ab0e57.tar.bz2
[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>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/esp4.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 452910dae89f..1af332df72d9 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -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;
}