Commit 7aa68cb9 authored Oct 17, 2007 by Herbert Xu Committed by David S. Miller Oct 17, 2007

[IPSEC]: Move ip_summed zapping out of xfrm6_rcv_spi

Not every transform needs to zap ip_summed. For example, a pure tunnel
mode encapsulation does not affect the hardware checksum at all. In fact,
every algorithm (that needs this) other than AH6 already does its own
ip_summed zapping.

This patch moves the zapping into AH6 which is in line with what IPv4 does.

Possible future optimisation: Checksum the data as we copy them in IPComp.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 33b5ecb8

net/ipv6/ah6.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -344,6 +344,8 @@ static int ah6_input(struct xfrm_state x, struct sk_buff skb)
		pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
		goto out;

		skb->ip_summed = CHECKSUM_NONE;

		hdr_len = skb->data - skb_network_header(skb);
		ah = (struct ip_auth_hdr *)skb->data;
		ahp = x->data;

net/ipv6/xfrm6_input.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -97,7 +97,6 @@ int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
		memcpy(skb->sp->xvec + skb->sp->len, xfrm_vec,
		xfrm_nr * sizeof(xfrm_vec[0]));
		skb->sp->len += xfrm_nr;
		skb->ip_summed = CHECKSUM_NONE;

		nf_reset(skb);