netdev - Re: [PATCH] tls: Add support for encryption using async offload accelerator

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Message-ID: <CAOtvUMeG5_aZ27Pck68mC3BXrxa5X-zwd6ri6iQrAv6WZPpPNg@mail.gmail.com>
Date:   Wed, 31 Jan 2018 08:23:26 +0200
From:   Gilad Ben-Yossef <gilad@...yossef.com>
To:     Vakul Garg <vakul.garg@....com>
Cc:     Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        ilyal@...lanox.com, aviadye@...lanox.com, davejwatson@...com,
        David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH] tls: Add support for encryption using async offload accelerator

On Wed, Jan 31, 2018 at 8:10 AM, Gilad Ben-Yossef <gilad@...yossef.com> wrote:
> Hi Vakul,
>
> On Wed, Jan 31, 2018 at 12:36 PM, Vakul Garg <vakul.garg@....com> wrote:
>> Async crypto accelerators (e.g. drivers/crypto/caam) support offloading
>> GCM operation. If they are enabled, crypto_aead_encrypt() return error
>> code -EINPROGRESS. In this case tls_do_encryption() needs to wait on a
>> completion till the time the response for crypto offload request is
>> received.
>>
>
> Thank you for this patch. I think it is actually a bug fix and should
> probably go into stable

On second though in stable we should probably just disable async tfm
allocations.
It's simpler. But this approach is still good for -next


Gilad


-- 
Gilad Ben-Yossef
Chief Coffee Drinker

"If you take a class in large-scale robotics, can you end up in a
situation where the homework eats your dog?"
 -- Jean-Baptiste Queru