From: Herbert Xu <herbert@gondor.apana.org.au>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: "Eric Biggers" <ebiggers@google.com>,
"Corentin Labbe" <clabbe.montjoie@gmail.com>,
"Ayush Sawal" <ayush.sawal@chelsio.com>,
"Jamie Iles" <jamie@jamieiles.com>,
"Fabio Estevam" <festevam@gmail.com>,
"Horia Geantă" <horia.geanta@nxp.com>,
"Rohit Maheshwari" <rohitm@chelsio.com>,
"Chen-Yu Tsai" <wens@csie.org>,
"NXP Linux Team" <linux-imx@nxp.com>,
"Corentin Labbe" <clabbe@baylibre.com>,
"Tom Lendacky" <thomas.lendacky@amd.com>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Vinay Kumar Yadav" <vinay.yadav@chelsio.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Matthias Brugger" <matthias.bgg@gmail.com>,
linux-amlogic@lists.infradead.org, linux-omap@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
"John Allen" <john.allen@amd.com>,
"Tero Kristo" <t-kristo@ti.com>,
linux-crypto@vger.kernel.org,
"Pengutronix Kernel Team" <kernel@pengutronix.de>,
"Shawn Guo" <shawnguo@kernel.org>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH v4 00/13] crypto: permit asynchronous skciphers as driver fallbacks
Date: Thu, 16 Jul 2020 21:53:34 +1000 [thread overview]
Message-ID: <20200716115334.GB31166@gondor.apana.org.au> (raw)
In-Reply-To: <20200707063203.5018-1-ardb@kernel.org>
On Tue, Jul 07, 2020 at 09:31:50AM +0300, Ard Biesheuvel wrote:
> The drivers for crypto accelerators in drivers/crypto all implement skciphers
> of an asynchronous nature, given that they are backed by hardware DMA that
> completes asynchronously wrt the execution flow.
>
> However, in many cases, any fallbacks they allocate are limited to the
> synchronous variety, which rules out the use of SIMD implementations of
> AES in ECB, CBC and XTS modes, given that they are usually built on top
> of the asynchronous SIMD helper, which queues requests for asynchronous
> completion if they are issued from a context that does not permit the use
> of the SIMD register file.
>
> This may result in sub-optimal AES implementations to be selected as
> fallbacks, or even less secure ones if the only synchronous alternative
> is table based, and therefore not time invariant.
>
> So switch all these cases over to the asynchronous API, by moving the
> subrequest into the skcipher request context, and permitting it to
> complete asynchronously via the caller provided completion function.
>
> Patch #1 is not related, but touches the same driver as #2 so it is
> included anyway. Patch #13 removes another sync skcipher allocation by
> switching to the AES library interface.
>
> v4:
> - add missing kerneldoc updates for sun8i-ce and sun8i-ss
> - add acks from Horia, Jamie and Corentin
> - rebase onto cryptodev/master
>
> v3:
> - disregard the fallback skcipher_request when taking the request context size
> for TFMs that don't need the fallback at all (picoxcell, qce)
> - fix error handling in fallback skcipher allocation and remove pointless
> memset()s (qce)
>
> v2:
> - address issue found by build robot in patch #7
> - add patch #13
> - rebase onto cryptodev/master
>
> Cc: Corentin Labbe <clabbe.montjoie@gmail.com>
> Cc: Corentin Labbe <clabbe@baylibre.com>
> Cc: Herbert Xu <herbert@gondor.apana.org.au>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Maxime Ripard <mripard@kernel.org>
> Cc: Chen-Yu Tsai <wens@csie.org>
> Cc: Tom Lendacky <thomas.lendacky@amd.com>
> Cc: John Allen <john.allen@amd.com>
> Cc: Ayush Sawal <ayush.sawal@chelsio.com>
> Cc: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
> Cc: Rohit Maheshwari <rohitm@chelsio.com>
> Cc: Shawn Guo <shawnguo@kernel.org>
> Cc: Sascha Hauer <s.hauer@pengutronix.de>
> Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
> Cc: Fabio Estevam <festevam@gmail.com>
> Cc: NXP Linux Team <linux-imx@nxp.com>
> Cc: Jamie Iles <jamie@jamieiles.com>
> Cc: Eric Biggers <ebiggers@google.com>
> Cc: Tero Kristo <t-kristo@ti.com>
> Cc: Matthias Brugger <matthias.bgg@gmail.com>
> Cc: Horia Geantă <horia.geanta@nxp.com>
>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-omap@vger.kernel.org
> Cc: linux-amlogic@lists.infradead.org
>
> Ard Biesheuvel (13):
> crypto: amlogic-gxl - default to build as module
> crypto: amlogic-gxl - permit async skcipher as fallback
> crypto: omap-aes - permit asynchronous skcipher as fallback
> crypto: sun4i - permit asynchronous skcipher as fallback
> crypto: sun8i-ce - permit asynchronous skcipher as fallback
> crypto: sun8i-ss - permit asynchronous skcipher as fallback
> crypto: ccp - permit asynchronous skcipher as fallback
> crypto: chelsio - permit asynchronous skcipher as fallback
> crypto: mxs-dcp - permit asynchronous skcipher as fallback
> crypto: picoxcell - permit asynchronous skcipher as fallback
> crypto: qce - permit asynchronous skcipher as fallback
> crypto: sahara - permit asynchronous skcipher as fallback
> crypto: mediatek - use AES library for GCM key derivation
>
> drivers/crypto/Kconfig | 3 +-
> .../allwinner/sun4i-ss/sun4i-ss-cipher.c | 46 ++++-----
> drivers/crypto/allwinner/sun4i-ss/sun4i-ss.h | 3 +-
> .../allwinner/sun8i-ce/sun8i-ce-cipher.c | 41 ++++----
> drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 8 +-
> .../allwinner/sun8i-ss/sun8i-ss-cipher.c | 39 ++++----
> drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h | 26 ++---
> drivers/crypto/amlogic/Kconfig | 2 +-
> drivers/crypto/amlogic/amlogic-gxl-cipher.c | 27 +++---
> drivers/crypto/amlogic/amlogic-gxl.h | 3 +-
> drivers/crypto/ccp/ccp-crypto-aes-xts.c | 33 ++++---
> drivers/crypto/ccp/ccp-crypto.h | 4 +-
> drivers/crypto/chelsio/chcr_algo.c | 57 +++++------
> drivers/crypto/chelsio/chcr_crypto.h | 3 +-
> drivers/crypto/mediatek/mtk-aes.c | 63 ++----------
> drivers/crypto/mxs-dcp.c | 33 +++----
> drivers/crypto/omap-aes.c | 35 ++++---
> drivers/crypto/omap-aes.h | 3 +-
> drivers/crypto/picoxcell_crypto.c | 38 ++++----
> drivers/crypto/qce/cipher.h | 3 +-
> drivers/crypto/qce/skcipher.c | 42 ++++----
> drivers/crypto/sahara.c | 96 +++++++++----------
> 22 files changed, 280 insertions(+), 328 deletions(-)
All applied. Thanks.
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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next prev parent reply other threads:[~2020-07-16 11:55 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-07 6:31 [PATCH v4 00/13] crypto: permit asynchronous skciphers as driver fallbacks Ard Biesheuvel
2020-07-07 6:31 ` [PATCH v4 01/13] crypto: amlogic-gxl - default to build as module Ard Biesheuvel
2020-07-07 6:31 ` [PATCH v4 02/13] crypto: amlogic-gxl - permit async skcipher as fallback Ard Biesheuvel
2020-07-07 6:31 ` [PATCH v4 03/13] crypto: omap-aes - permit asynchronous " Ard Biesheuvel
2020-07-07 6:31 ` [PATCH v4 04/13] crypto: sun4i " Ard Biesheuvel
2020-07-07 6:31 ` [PATCH v4 05/13] crypto: sun8i-ce " Ard Biesheuvel
2020-07-08 7:53 ` Corentin Labbe
2020-07-07 6:31 ` [PATCH v4 06/13] crypto: sun8i-ss " Ard Biesheuvel
2020-07-07 6:31 ` [PATCH v4 07/13] crypto: ccp " Ard Biesheuvel
2020-07-07 20:04 ` John Allen
2020-07-07 6:31 ` [PATCH v4 08/13] crypto: chelsio " Ard Biesheuvel
2020-07-07 6:31 ` [PATCH v4 09/13] crypto: mxs-dcp " Ard Biesheuvel
2020-07-07 6:32 ` [PATCH v4 10/13] crypto: picoxcell " Ard Biesheuvel
2020-07-07 6:32 ` [PATCH v4 11/13] crypto: qce " Ard Biesheuvel
2020-07-07 6:32 ` [PATCH v4 12/13] crypto: sahara " Ard Biesheuvel
2020-07-07 6:32 ` [PATCH v4 13/13] crypto: mediatek - use AES library for GCM key derivation Ard Biesheuvel
2020-07-16 11:53 ` Herbert Xu [this message]
2020-08-17 17:48 ` [PATCH v4 00/13] crypto: permit asynchronous skciphers as driver fallbacks patchwork-bot+linux-amlogic
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