From: Corentin LABBE <clabbe.montjoie@gmail.com>
To: herbert@gondor.apana.org.au,
Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com,
ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
maxime.ripard@free-electrons.com, linux@arm.linux.org.uk,
davem@davemloft.net, akpm@linux-foundation.org,
gregkh@linuxfoundation.org, mchehab@osg.samsung.com,
joe@perches.com, tj@kernel.org, arnd@arndb.de,
devicetree@vger.kernel.org, linux-doc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-sunxi@googlegroups.com
Subject: Re: [linux-sunxi] Re: [PATCH v9 4/4] crypto: Add Allwinner Security System crypto accelerator
Date: Sun, 24 May 2015 10:04:16 +0200 [thread overview]
Message-ID: <55618600.6040904@gmail.com> (raw)
In-Reply-To: <20150524033253.GB20656@gondor.apana.org.au>
Le 24/05/2015 05:32, Herbert Xu a écrit :
> On Sat, May 23, 2015 at 04:35:36PM +0200, Boris Brezillon wrote:
>>
>>> Since all SG I get was always a multiple of 16 (AES BLOCK SIZE) it was a sort of confirmation.
>>>
>>> Herbert ? does am I right or a chunking test is missing for cbc(aes) in testmgr.h
>>
>> Okay, just sharing my vision of this thing (I'll let Herbert comment on
>> this aspect): I'd say that theoretically nothing prevents one from
>> splitting its sg list in chunks smaller than the block size, so I'd
>> say you should use the same trick for AES.
>
> Indeed, you must be able to handle a block that straddles two SG
> entries. If the hardware is not capable then you have to linearise
> it by copying or use a fallback.
>
> I can't believe we don't have a generic test for this in testmgr.
>
For aes_cbc it exists a test with 3 SG with .tap = { 496 - 20, 4, 16 }
But my driver handle that. (multiple of 4)
What do you think about adding a test with 16 SG of 1 byte ? (or 3 + 2 + 3 + 8 * 1)
Furthermore, I need to re-read testmgr.h but it seems that no aes test exists with odd SG size.
next prev parent reply other threads:[~2015-05-24 8:04 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-14 12:58 [PATCH v9] crypto: Add Allwinner Security System crypto accelerator LABBE Corentin
2015-05-14 12:58 ` [PATCH v9 2/4] ARM: sun4i: dt: Add DT bindings documentation for SUN4I Security System LABBE Corentin
[not found] ` <1431608341-10936-1-git-send-email-clabbe.montjoie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-14 12:58 ` [PATCH v9 1/4] ARM: sun7i: dt: Add Security System to A20 SoC DTS LABBE Corentin
2015-05-15 7:31 ` Maxime Ripard
2015-05-23 12:08 ` Corentin LABBE
2015-05-14 12:59 ` [PATCH v9 3/4] MAINTAINERS: Add myself as maintainer of Allwinner Security System LABBE Corentin
2015-05-14 12:59 ` [PATCH v9 4/4] crypto: Add Allwinner Security System crypto accelerator LABBE Corentin
[not found] ` <1431608341-10936-5-git-send-email-clabbe.montjoie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-15 6:49 ` Herbert Xu
[not found] ` <20150515064932.GB16704-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2015-05-23 12:18 ` Corentin LABBE
2015-05-24 3:30 ` [linux-sunxi] " Herbert Xu
2015-05-17 8:45 ` Boris Brezillon
2015-05-17 10:34 ` Herbert Xu
[not found] ` <20150517103440.GA7800-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2015-05-17 10:48 ` Boris Brezillon
2015-05-18 0:41 ` Herbert Xu
[not found] ` <20150518004121.GA11910-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2015-05-18 7:24 ` Boris Brezillon
2015-05-18 8:33 ` Herbert Xu
2015-05-23 13:12 ` Corentin LABBE
[not found] ` <55607CB7.8020505-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-23 14:35 ` Boris Brezillon
2015-05-24 3:32 ` Herbert Xu
2015-05-24 8:04 ` Corentin LABBE [this message]
[not found] ` <55618600.6040904-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-24 8:12 ` Herbert Xu
2015-06-03 19:06 ` Corentin LABBE
2015-05-15 6:52 ` Herbert Xu
[not found] ` <20150515065222.GA16808-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2015-05-16 18:09 ` Corentin LABBE
2015-05-17 1:32 ` [linux-sunxi] " Herbert Xu
2015-05-17 7:45 ` [PATCH v9] " Boris Brezillon
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