From: Herbert Xu Subject: Re: [PATCH v9 4/4] crypto: Add Allwinner Security System crypto accelerator Date: Mon, 18 May 2015 16:33:08 +0800 Message-ID: <20150518083308.GB18195@gondor.apana.org.au> References: <1431608341-10936-1-git-send-email-clabbe.montjoie@gmail.com> <1431608341-10936-5-git-send-email-clabbe.montjoie@gmail.com> <20150517104508.468b032f@bbrezillon> <20150517103440.GA7800@gondor.apana.org.au> <20150517124811.797fab32@bbrezillon> <20150518004121.GA11910@gondor.apana.org.au> <20150518092449.2364d21e@bbrezillon> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: LABBE Corentin , robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, maxime.ripard@free-electrons.com, linux@arm.linux.org.uk, davem@davemloft.net, akpm@linux-foundation.org, gregkh@linuxfoundation.org, mchehab@osg.samsung.com, joe@perches.com, tj@kernel.org, arnd@arndb.de, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-sunxi@googlegroups.com To: Boris Brezillon Return-path: Received: from helcar.hengli.com.au ([209.40.204.226]:60278 "EHLO helcar.hengli.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752396AbbERId7 (ORCPT ); Mon, 18 May 2015 04:33:59 -0400 Content-Disposition: inline In-Reply-To: <20150518092449.2364d21e@bbrezillon> Sender: linux-crypto-owner@vger.kernel.org List-ID: On Mon, May 18, 2015 at 09:24:49AM +0200, Boris Brezillon wrote: > > Okay, just to be sure, what does "Asynchronous" mean in ablkcipher or > ahash ? > Is it related to the fact that crypto operations can be done in > multiple steps (e.g.: one set_key + several encrypt chunk operations), > or is this something else ? It gives you the ability to postpone the processing. However it doesn't mean that you have to postpone the processing. For instance, all of our sync software algorithms are also available through the async interface for obvious reasons. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt