linux-kernel - Re: Use cryptd(%s) as cryptd-ed algorithm name instead of %s

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Message-ID: <20090114065359.GA16044@gondor.apana.org.au>
Date:	Wed, 14 Jan 2009 17:53:59 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Huang Ying <ying.huang@...el.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>
Subject: Re: Use cryptd(%s) as cryptd-ed algorithm name instead of %s

On Wed, Jan 14, 2009 at 02:44:08PM +0800, Huang Ying wrote:
> Because:
> 
> 1. if use %s, you can only request cryptd(<driver name>), not
>    cryptd(<alg name>), because generated new algorithm instance has
>    algorithm name: <alg name> and driver name cryptd(<driver name>).

This is intentional.  For the purposes we talked about we should
be requesting cryptd(<driver name>), as otherwise you may end up
with someone else's AES algorithm as the base.

> 2. Generated cryptd-ed algorithm will have the same algorithm name and
>    higher priority, but some user may not want to use cryptd-ed
>    version.

The priority shouldn't be an issue in our case since the AES-NI
algorithm should register itself as an ablkcipher with an even
higher priority.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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