linux-kernel - Re: [PATCH v3 1/2] crypto: engine

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Message-ID: <20200214033942.uatozeoqzrhu7shq@gondor.apana.org.au>
Date:   Fri, 14 Feb 2020 11:39:42 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Iuliana Prodan <iuliana.prodan@....com>
Cc:     Baolin Wang <baolin.wang@...aro.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Corentin Labbe <clabbe.montjoie@...il.com>,
        Horia Geanta <horia.geanta@....com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Maxime Ripard <mripard@...nel.org>,
        Aymen Sghaier <aymen.sghaier@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Silvano Di Ninno <silvano.dininno@....com>,
        Franck Lenormand <franck.lenormand@....com>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH v3 1/2] crypto: engine - support for parallel requests

On Fri, Feb 14, 2020 at 01:25:50AM +0000, Iuliana Prodan wrote:
> 
> Given your suggestion, I’m thinking of implementing do_one_request, in 
> the driver, to return -IN_PROGRESS if the hw can enqueue more and -EBUSY 
> if otherwise (solution 1). But, this implies to update all the drivers 
> that use crypto-engine (something I wouldn’t mind doing, but I don’t 
> have the hw to test it).

We could always maintain a legacy interface for existing drivers
until they are all converted.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt