linux-kernel - Re: [PATCH v2 2/2] crypto: engine - Permit to enqueue skcipher request

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Date:   Fri, 14 Jul 2017 13:15:36 +0200
From:   Corentin Labbe <clabbe.montjoie@...il.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     davem@...emloft.net, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] crypto: engine - Permit to enqueue skcipher
 request

On Fri, Jun 23, 2017 at 02:48:37PM +0800, Herbert Xu wrote:
> On Mon, Jun 19, 2017 at 09:55:24AM +0200, Corentin Labbe wrote:
> >
> > Since there are two different user of "crypto engine + ablkcipher", it will be not easy to convert them in one serie. (I could do it, but I simply could not test it for OMAP (lack of hw))
> > And any new user which want to use crypto engine+skcipher (like me with the sun8i-ce driver) are simply stuck.
> 
> You're right.  We'll need to do this in a backwards-compatible way.  In fact
> we already do something similar in skcipher.c itself.  Simply look at the
> cra_type field and if it matches blkcipher/ablkcipher/givcipher then it's
> legacy ablkcipher, otherwise it's skcipher.
> 
> Also the way crypto_engine looks at the request type in the data-path is
> suboptimal.  This should really be built into the cra_type object.  For
> example, we can have cra_type->engine->prepare_request which would just
> do the right thing.
> 

Not sure to have well understand what you want.
You want that I switch on cra_type instead of crypto_tfm_alg_type() ?