From: Christoph Hellwig <hch@infradead.org>
To: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Cc: Christoph Hellwig <hch@infradead.org>,
Herbert Xu <herbert@gondor.hengli.com.au>,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: RFC: Crypto API User-interface
Date: Tue, 7 Sep 2010 10:59:36 -0400 [thread overview]
Message-ID: <20100907145936.GA23178@infradead.org> (raw)
In-Reply-To: <AANLkTinfQprsNC2ipocUKUWv894mbVtnDoxd5as9kCt-@mail.gmail.com>
On Tue, Sep 07, 2010 at 04:57:04PM +0200, Nikos Mavrogiannopoulos wrote:
> Or that someone is not really aware of some cryptographic uses.
> Embedded systems have crypto accelerators in hardware available
> through kernel device drivers. In the systems I worked the
> accelerators via a crypto device interface gave a 50x to 100x boost in
> crypto operations and relieved the CPU from doing them.
An interface to external crypto co-process _can_ be useful. It
certainly isn't for the tiny requests where mr crackhead complains about
the overhead. So if we do want to design an interface for addons cards
we need to expose a threshold from which it makes sense to use it, and
not even bother using for the simply software in-kernel algorithms.
Which is something that could be done easily using a variant of
Herbert's interface.
next prev parent reply other threads:[~2010-09-07 14:59 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-07 8:42 RFC: Crypto API User-interface Herbert Xu
2010-09-07 9:18 ` Tomas Mraz
2010-09-07 14:06 ` Christoph Hellwig
2010-09-07 14:11 ` Herbert Xu
2010-09-07 14:24 ` Christoph Hellwig
2010-09-07 14:39 ` Herbert Xu
2010-09-07 14:49 ` Nikos Mavrogiannopoulos
2010-09-07 14:57 ` Nikos Mavrogiannopoulos
2010-09-07 14:59 ` Christoph Hellwig [this message]
2010-10-19 13:44 ` Herbert Xu
2010-10-20 10:24 ` Nikos Mavrogiannopoulos
2010-11-04 17:34 ` Herbert Xu
2010-11-04 17:36 ` [PATCH 3/4] crypto: algif_hash - User-space interface for hash operations Herbert Xu
2010-11-04 19:23 ` David Miller
2010-11-04 17:36 ` [PATCH 1/4] net - Add AF_ALG macros Herbert Xu
2010-11-04 19:22 ` David Miller
2010-11-04 17:36 ` [PATCH 2/4] crypto: af_alg - User-space interface for Crypto API Herbert Xu
2010-11-04 19:23 ` David Miller
2010-11-04 17:36 ` [PATCH 4/4] crypto: algif_skcipher - User-space interface for skcipher operations Herbert Xu
2010-11-04 19:23 ` David Miller
2010-10-19 13:46 ` [PATCH 1/4] net - Add AF_ALG macros Herbert Xu
2010-10-20 9:01 ` David Miller
2010-10-19 13:46 ` [PATCH 2/4] crypto: af_alg - User-space interface for Crypto API Herbert Xu
2010-10-19 13:46 ` [PATCH 3/4] crypto: algif_hash - User-space interface for hash operations Herbert Xu
2010-10-19 13:46 ` [PATCH 4/4] crypto: algif_skcipher - User-space interface for skcipher operations Herbert Xu
[not found] <1590523029.1055831283858598965.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com>
2010-09-07 11:27 ` RFC: Crypto API User-interface Miloslav Trmac
2010-09-07 14:07 ` Herbert Xu
[not found] <1847066281.1081601283869883727.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com>
2010-09-07 14:34 ` Miloslav Trmac
2010-09-07 14:41 ` Herbert Xu
2010-09-07 14:51 ` Christoph Hellwig
2010-09-07 14:54 ` Miloslav Trmac
[not found] <834983542.1086561283871074929.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com>
2010-09-07 14:52 ` Miloslav Trmac
2010-09-07 14:55 ` Christoph Hellwig
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