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From: "pascal@pabr.org" <pascal@pabr.org>
To: linux-arm-kernel@lists.arm.linux.org.uk
Cc: linux-crypto@vger.kernel.org
Subject: Re: Add support for the crypto engine on Orion5X
Date: Fri, 12 Jun 2009 14:09:44 +0200	[thread overview]
Message-ID: <h0tgje$b2q$1@ger.gmane.org> (raw)
In-Reply-To: <1244728999-8103-1-git-send-email-arm-kernel@ml.breakpoint.cc>

arm-kernel@ml.breakpoint.cc wrote:
> The crypto driver with flush_kernel_dcache_page()
> [...]
> |104857600 bytes (105 MB) copied, 31.3831 s, 3.3 MB/s

FYI I did tests with blocks of 4096 bytes (instead of dm-dcrypt's 512)
and the results suggest that the hardware can do at least 68 MB/s.
This makes sense since some of these devices come with gigabit ethernet.

Is there hope of achieving such throughputs with Linux and cryptoapi
on these SoCs ?  Or would this require very aggressive optimizations,
e.g. DMA'ing directly from the SATA interface to the CESA SRAM, and
then from the CESA SRAM to the ethernet interface ?

Pascal


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  parent reply	other threads:[~2009-06-12 12:09 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-11 14:03 Add support for the crypto engine on Orion5X arm-kernel
2009-06-11 14:03 ` [PATCH] arm/orion5x: add sram support for crypto arm-kernel
2009-06-11 19:17   ` Nicolas Pitre
2009-06-11 20:15     ` Sebastian Andrzej Siewior
2009-06-11 20:36       ` Nicolas Pitre
2009-06-11 21:07         ` Sebastian Andrzej Siewior
2009-06-11 21:15           ` Russell King - ARM Linux
2009-06-12  1:02             ` Nicolas Pitre
2009-06-11 21:19           ` Nicolas Pitre
2009-06-12  3:35             ` Nicolas Pitre
2009-06-13 10:07             ` Sebastian Andrzej Siewior
2009-08-01  9:38             ` Sebastian Andrzej Siewior
2009-08-02 14:14               ` Nicolas Pitre
2009-08-03 16:57                 ` [PATCH v3] crypto: add support for Orion5X crypto engine Sebastian Andrzej Siewior
2009-08-03 19:03                   ` Nicolas Pitre
2009-08-05  7:24                     ` [PATCH v4] " Sebastian Andrzej Siewior
2009-08-10  2:50                       ` Herbert Xu
2009-06-11 14:03 ` [PATCH] " arm-kernel
2009-06-11 14:03 ` [PATCH] arm/ts209: init crypto arm-kernel
2009-06-11 19:22   ` Nicolas Pitre
2009-06-11 20:27     ` [PATCH] arm/orion5x: init the crypto device Sebastian Andrzej Siewior
2009-06-12 12:09 ` pascal [this message]
2009-07-26 15:25   ` Add support for the crypto engine on Orion5X Uri Yosef

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