[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>
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index f9f6891..a8221d1 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -344,6 +344,8 @@
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;
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index 596a730..b1201c3 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -97,7 +97,6 @@
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);