[IPSEC]: Move integrity stat collection into xfrm_input
Similar to the moving out of the replay processing on the output, this
patch moves the integrity stat collectin from x->type->input into
xfrm_input.
This would eventually allow transforms such as AH/ESP to be lockless.
The error value EBADMSG (currently unused in the crypto layer) is used
to indicate a failed integrity check. In future this error can be
directly returned by the crypto layer once we switch to aead
algorithms.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 587f347..b7d68eb 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -147,8 +147,11 @@
goto drop_unlock;
nexthdr = x->type->input(x, skb);
- if (nexthdr <= 0)
+ if (nexthdr <= 0) {
+ if (nexthdr == -EBADMSG)
+ x->stats.integrity_failed++;
goto drop_unlock;
+ }
skb_network_header(skb)[nhoff] = nexthdr;