Re: [ptxdist] [RFC/PATCH 0/3] cryptodev

[Clemens Gruber <clemens.gruber@pqgruber.com>]

Hi,

On Fri, Jun 30, 2017 at 09:25:04PM +0200, Ladislav Michl wrote:
> On Fri, Jun 30, 2017 at 04:36:21PM +0200, Michael Olbrich wrote:
> > Hi,
> > 
> > On Sat, Jun 24, 2017 at 03:47:51PM +0200, Ladislav Michl wrote:
> > > This serie adds support for cryptodev hardware acceleration.
> > > However, there's one issue unresolved: cryptodev module
> > > loading.
> > > As we have three different modutils implementations available
> > > and also supporting systemd and sysv init it is a bit messy
> > > to generate proper config to load cryptodev at boot time.
> > > So we could either leave module loading to BSP or do something
> > > on ptxdist level. Thoughts?
> > 
> > I'm not sure I like this. Keeping up to date with crypto stuff is hard
> > enough as it is. I don't like adding a out-of-tree kernel module into the
> > mix.
> 
> Fair enough, but note this module is there for long time and still properly
> maintained.

I am wondering about the performance improvements when using the
cryptodev openssl engine. There must be some cost for the context
switches, but this is probably outweighed by the offloading.
Did you for example run openssl speed aes-128-cbc before and after?
And on what platform did you try it?

Thanks,
Clemens

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