Commit 8bd17075 authored Oct 10, 2007 by Herbert Xu Committed by David S. Miller Oct 10, 2007

[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>

parent f24e3d65

net/ipv4/esp4.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -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;
		}