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Subject: Re: [PATCH 0/5] crypto: Implement cmac based on cbc skcipher
To:     Herbert Xu <herbert@gondor.apana.org.au>
Cc:     Ard Biesheuvel <ardb@kernel.org>,
        Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
        Eric Biggers <ebiggers@kernel.org>
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 <20200818222719.GA27622@gondor.apana.org.au>
From:   Ben Greear <greearb@candelatech.com>
Organization: Candela Technologies
Message-ID: <bee1a9ce-25d1-2520-5f6a-3966bfa501d2@candelatech.com>
Date:   Tue, 18 Aug 2020 15:31:10 -0700
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On 8/18/20 3:27 PM, Herbert Xu wrote:
> On Wed, Aug 19, 2020 at 08:15:50AM +1000, Herbert Xu wrote:
>> On Tue, Aug 18, 2020 at 07:17:35AM -0700, Ben Greear wrote:
>>>
>>> Is there any easy way to use your work to make shash fast for aesni?  I
>>> basically just want it to perform as well as it used to with my patch.
>>
>> Yes.  We could add a sync version of aesni that simply falls back
>> to aes-generic when simd is unavailable.
> 
> But I think before anyone attempts this we should explore making
> mac80211 async like IPsec.  Is there any fundamental reason why
> that is not possible? Have the wireless people expressed any
> objections to making this async before?

I don't think it has been discussed recently, but mac80211 is already
a complicated beast, so if this added any significant complexity
it might not be worth it.

Truth is though, I know very little about what changes would be
needed to make it do async decrypt, so maybe it would be a simple
matter?

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com