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From: Ben Greear <greearb@candelatech.com>
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>
Subject: Re: [PATCH 0/5] crypto: Implement cmac based on cbc skcipher
Date: Tue, 18 Aug 2020 15:39:15 -0700	[thread overview]
Message-ID: <8b248ef3-d4c7-43fd-6ae4-1c3381597579@candelatech.com> (raw)
In-Reply-To: <20200818223359.GA27712@gondor.apana.org.au>

On 8/18/20 3:33 PM, Herbert Xu wrote:
> On Tue, Aug 18, 2020 at 03:31:10PM -0700, Ben Greear wrote:
>>
>> 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.
> 
> Any bulk data path should be using the async interface, otherwise
> performance will seriously suffer should SIMD be unavailable.  I
> think someone should look at converting wireless to async like IPsec.

Most users in most cases are using hw crypt, so that is likely why
it hasn't gotten a huge amount of effort to optimize the software
crypt path.

If someone wants to give this async api a try for mac80211, I can
test, and I can sponsor the work, but I don't have time to try
to implement it myself.

Thanks,
Ben

> 
>> 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?
> 
> IPsec was actually quite straightforward.
> 
> Cheers,
> 


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

  reply	other threads:[~2020-08-18 22:39 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-02  9:06 [PATCH] crypto: x86/aesni - implement accelerated CBCMAC, CMAC and XCBC shashes Ard Biesheuvel
2020-08-03 19:11 ` Ben Greear
2020-08-04 12:55   ` Ard Biesheuvel
2020-08-04 13:01     ` Ben Greear
2020-08-04 13:08       ` Ard Biesheuvel
2020-08-04 13:22         ` Ben Greear
2020-08-04 19:45         ` Ben Greear
2020-08-04 20:12           ` Ard Biesheuvel
2020-09-23 11:03           ` Ben Greear
2020-10-29 16:58             ` Ard Biesheuvel
2020-08-18  8:24 ` [PATCH 0/5] crypto: Implement cmac based on cbc skcipher Herbert Xu
2020-08-18  8:25   ` [PATCH 1/6] crypto: skcipher - Add helpers for sync skcipher spawn Herbert Xu
2020-08-18  8:25   ` [PATCH 2/6] crypto: ahash - Add helper to free single spawn instance Herbert Xu
2020-08-18  8:25   ` [PATCH 3/6] crypto: ahash - Add init_tfm/exit_tfm Herbert Xu
2020-08-18  8:25   ` [PATCH 4/6] crypto: ahash - Add ahash_alg_instance Herbert Xu
2020-08-18  8:25   ` [PATCH 5/6] crypto: ahash - Remove AHASH_REQUEST_ON_STACK Herbert Xu
2020-08-26 10:55     ` Ard Biesheuvel
2020-08-18  8:25   ` [PATCH 6/6] crypto: cmac - Use cbc skcipher instead of raw cipher Herbert Xu
2020-08-24  9:47     ` Ard Biesheuvel
2020-08-24 11:20       ` Herbert Xu
2020-08-18  8:31   ` [PATCH 0/5] crypto: Implement cmac based on cbc skcipher Ard Biesheuvel
2020-08-18 13:51     ` Herbert Xu
2020-08-18 13:56       ` Ben Greear
2020-08-18 14:05         ` Herbert Xu
2020-08-18 14:17           ` Ben Greear
2020-08-18 22:15             ` Herbert Xu
2020-08-18 22:27               ` Herbert Xu
2020-08-18 22:31                 ` Ben Greear
2020-08-18 22:33                   ` Herbert Xu
2020-08-18 22:39                     ` Ben Greear [this message]
2020-08-20  6:58                       ` Ard Biesheuvel
2020-08-20  7:01                         ` Herbert Xu
2020-08-20  7:04                           ` Ard Biesheuvel
2020-08-20  7:06                             ` Herbert Xu
2020-08-20  7:19                               ` Ard Biesheuvel
2020-08-20  7:29                                 ` Herbert Xu
2020-08-20  7:33                                   ` Ard Biesheuvel
2020-08-20  7:44                                     ` Herbert Xu
2020-08-20  7:48                                       ` Ard Biesheuvel
2020-08-20  7:53                                         ` Herbert Xu
2020-08-20  7:56                                           ` Ard Biesheuvel
2020-08-20 13:54                                             ` Ben Greear
2020-08-20 20:10                                               ` Herbert Xu
2020-08-20 22:09                                                 ` Ben Greear
2020-08-20 22:12                                                   ` Herbert Xu
2020-08-22 22:35                 ` Christian Lamparter

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