linux-kernel - RE: [PATCH 2/7] crypto: sha256-mb - SHA256 multibuffer job manager and glue code

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Date:	Fri, 8 Apr 2016 18:37:05 +0000
From:	"Yu, Fenghua" <fenghua.yu@...el.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>,
	"megha.dey@...ux.intel.com" <megha.dey@...ux.intel.com>
CC:	"davem@...emloft.net" <davem@...emloft.net>,
	"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"tim.c.chen@...ux.intel.com" <tim.c.chen@...ux.intel.com>,
	"Dey, Megha" <megha.dey@...el.com>
Subject: RE: [PATCH 2/7] crypto: sha256-mb - SHA256 multibuffer job manager
 and glue code

> From: Herbert Xu [mailto:herbert@...dor.apana.org.au]
> Sent: Tuesday, April 05, 2016 5:04 AM
> To: megha.dey@...ux.intel.com
> Cc: davem@...emloft.net; linux-crypto@...r.kernel.org; linux-
> kernel@...r.kernel.org; tim.c.chen@...ux.intel.com; Yu, Fenghua
> <fenghua.yu@...el.com>; Dey, Megha <megha.dey@...el.com>
> Subject: Re: [PATCH 2/7] crypto: sha256-mb - SHA256 multibuffer job
> manager and glue code
> 
> On Thu, Mar 24, 2016 at 01:25:58PM -0700, megha.dey@...ux.intel.com
> wrote:
> > From: Megha Dey <megha.dey@...el.com>
> >
> > This patch introduces the multi-buffer job manager which is
> > responsible for submitting scatter-gather buffers from several SHA256
> > jobs to the multi-buffer algorithm. It also contains the flush routine
> > to that's called by the crypto daemon to complete the job when no new
> > jobs arrive before the deadline of maximum latency of a SHA256 crypto job.
> >
> > The SHA256 multi-buffer crypto algorithm is defined and initialized in
> > this patch.
> >
> > Signed-off-by: Megha Dey <megha.dey@...ux.intel.com>
> > Reviewed-by: Fenghua Yu <fenghua.yu@...el.com>
> > Reviewed-by: Tim Chen <tim.c.chen@...ux.intel.com>
> 
> sha1-mb still has the same issues that I complained about for the aes-mb
> submission.  In particular, I don't like the use of shash to handle what is really
> an async implmentation.
> 
> So I'd like to see this fixed first before we add any more copies of this code.

We will update the patches and re-send out sha1/256/512 AVX2 mb algos using async implementation.

Thanks.

-Fenghua