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[IPSEC]: Move integrity stat collection into xfrm_input

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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>
This commit is contained in:
Herbert Xu
2007-12-16 15:55:02 -08:00
committed by David S. Miller
parent b2aa5e9d43
commit 668dc8af31
5 changed files with 15 additions and 12 deletions
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5
net/xfrm/xfrm_input.c
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@@ -147,8 +147,11 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
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;