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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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3
net/ipv4/ah4.c
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@@ -177,9 +177,8 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
err = ah_mac_digest(ahp, skb, ah->auth_data);
if (err)
goto out;
err = -EINVAL;
if (memcmp(ahp->work_icv, auth_data, ahp->icv_trunc_len)) {
x->stats.integrity_failed++;
err = -EBADMSG;
goto out;
}
}