Date: Sun, 12 Apr 2020 22:58:08 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: Alexey Dokuchaev <danfe@freebsd.org> Cc: d@delphij.net, John Baldwin <jhb@freebsd.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org, Xin Li <delphij@delphij.net> Subject: Re: svn commit: r359374 - in head: . share/man/man4 share/man/man7 share/man/man9 sys/crypto/aesni sys/crypto/armv8 sys/crypto/blake2 sys/crypto/ccp sys/crypto/via sys/dev/cesa sys/dev/cxgbe sys/dev/cx... Message-ID: <20200413055808.GP4213@funkthat.com> In-Reply-To: <20200413043221.GA60842@FreeBSD.org> References: <202003271825.02RIPOmR010857@repo.freebsd.org> <9c343572-5bf6-7047-f435-8e3fcffa8f8e@delphij.net> <20200413043221.GA60842@FreeBSD.org>
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Alexey Dokuchaev wrote this message on Mon, Apr 13, 2020 at 04:32 +0000:
> On Sun, Apr 12, 2020 at 01:08:49PM -0700, Xin Li via svn-src-all wrote:
> > On 3/27/20 11:25 AM, John Baldwin wrote:
> > > - Drivers no longer register a list of supported algorithms. [...]
> >
> > For user-visible interface, it seems like we are essentially treating
> > "accelerated software" like AES-NI the same way of plain software. For
> > example, geom_eli would now say:
> >
> > GEOM_ELI: Encryption: AES-XTS 128
> > GEOM_ELI: Crypto: software
> >
> > Instead of:
> >
> > GEOM_ELI: Encryption: AES-XTS 128
> > GEOM_ELI: Crypto: hardware
> >
> > [...] and it's much easier for system administrators if we expose the
> > fact that they are using some kind of acceleration than asking them to
> > run DTrace etc. to find out. Personally, I think it's probably better
> > to change the notion to either "accelerated" (by either hardware or
> > software) and "software"...
>
> +1 for "accelerated" vs. "software". For most users "accelerated" would
> mean AES-NI (dedicated crypto cards are not as common), and since most
> modern CPUs have those, not being able to easily distinguish between that
> and "pure software" (unaccelerated) mode is rather frustrating.
Yeah, w/o a differentiation, people can't tell if the aesni.ko module
was loaded or not... I use this to make sure things will go fast.. If
I see software, I know it'll be slow...
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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