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From: Andreas Jellinghaus on 28 Sep 2006 10:00
Evgeniy Polyakov wrote:
> Hello.
>
> I'm pleased to announce asynchronous crypto layer (acrypto) [1] release
> for 2.6.18 kernel tree. Acrypto allows to handle crypto requests
> asynchronously in hardware.
>
> Combined patchset includes:
> * acrypto core
> * IPsec ESP4 port to acrypto
> * dm-crypt port to acrypto

so I should be able to replace a plain 2.6.18 kernel with one
with this patchset and use dm-crypt'ed partitions (e.g. swap,
encrypted root filesystem) as usual without further changes?

Did anyone test this with success?

Regards, Andreas

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From: Evgeniy Polyakov on 29 Sep 2006 05:50
On Thu, Sep 28, 2006 at 03:23:43PM +0200, Andreas Jellinghaus (aj(a)ciphirelabs.com) wrote:
> Evgeniy Polyakov wrote:
> >Hello.
> >
> >I'm pleased to announce asynchronous crypto layer (acrypto) [1] release
> >for 2.6.18 kernel tree. Acrypto allows to handle crypto requests
> >asynchronously in hardware.
> >
> >Combined patchset includes:
> > * acrypto core
> > * IPsec ESP4 port to acrypto
> > * dm-crypt port to acrypto
>
> so I should be able to replace a plain 2.6.18 kernel with one
> with this patchset and use dm-crypt'ed partitions (e.g. swap,
> encrypted root filesystem) as usual without further changes?
>
> Did anyone test this with success?
>
> Regards, Andreas

As I answered in your first e-mail, yes, you just need to patch 2.6.18
tree and load one of the crypto provider.

Acrypto works with request/response model, i.e. you ask acrypto core to
perform some operation on given buffers and if it can, it will call
your callback when it is ready (or some error happend and acrypto was
unable to reroute request to other device), otherwise it will return error.

With such a model it is possible to extend acrypto to any kind of
operations on buffers, not only crypto related, for example it is
possible to onload IPsec header transformation, perform DMA between
specified areas and much more.

--
Evgeniy Polyakov
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From: Samuel Tardieu on 29 Sep 2006 06:30
>>>>> "Evgeniy" == Evgeniy Polyakov <johnpol(a)2ka.mipt.ru> writes:

Evgeniy> Hello. I'm pleased to announce asynchronous crypto layer
Evgeniy> (acrypto) [1] release for 2.6.18 kernel tree. Acrypto allows
Evgeniy> to handle crypto requests asynchronously in hardware.

Would userspace programs benefit from this patch? In particular, would
OpenSSL get better performances on Via nehemiah CPUs or does it need
to be patched?

Sam
--
Samuel Tardieu -- sam(a)rfc1149.net -- http://www.rfc1149.net/

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From: Evgeniy Polyakov on 29 Sep 2006 07:00
On Fri, Sep 29, 2006 at 12:17:58PM +0200, Samuel Tardieu (sam(a)rfc1149.net) wrote:
> >>>>> "Evgeniy" == Evgeniy Polyakov <johnpol(a)2ka.mipt.ru> writes:
>
> Evgeniy> Hello. I'm pleased to announce asynchronous crypto layer
> Evgeniy> (acrypto) [1] release for 2.6.18 kernel tree. Acrypto allows
> Evgeniy> to handle crypto requests asynchronously in hardware.
>
> Would userspace programs benefit from this patch? In particular, would
> OpenSSL get better performances on Via nehemiah CPUs or does it need
> to be patched?

Userspace supports Via Nehemiah CPUs crypto engine quite for a long time
without any external patching.

> Sam
> --
> Samuel Tardieu -- sam(a)rfc1149.net -- http://www.rfc1149.net/

--
Evgeniy Polyakov
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