Hi,
On Tue, Jun 05, 2012 at 08:36:18PM +0000, Ajay Matai wrote:
> I am running QNAP NAS device with Marvell SoC and having issues with both
> AES and SHA1 when accelerated through mv_cesa. Both the encryption and hash
> algorithms work fine for file sizes up to 1920 bytes, while anything greater
> than that gets broken (comparing AES with openssl and SHA1 output with
> sha1sum command).
>
> This is what I have done:
> Back ported the mv_cesa driver from linux-3.4.rc7 to linux-2.6.33.2
> Built and insmoded the driver, which loads fine and the algorithms show up in
> /proc/crypto
>
> The kernel/userspace interface is provided by crypto-linux-1.4
~~~~~~~~~~~~
This should read "cryptodev-linux", I guess?
> Unfortunately, I am unable to test mv_cesa with latest kernel as this device
> is running linux-2.6.33.2 and QNAP has not made linux-3.x based firmware
> available.
>
> Here's the CPU info:
> [/share/HDA_DATA/Public/linux-3.4-rc7/drivers/crypto] # cat /proc/cpuinfo
> Processor : Feroceon 88F6281 rev 1 (v5l)
> BogoMIPS : 799.53
> Features : swp half thumb fastmult edsp
> CPU implementer : 0x56
> CPU architecture: 5TE
> CPU variant : 0x2
> CPU part : 0x131
> CPU revision : 1
>
> Hardware : Feroceon-KW ARM
> Revision : 0000
> Serial : 0000000000000000
>
> Do you think this is a genuine bug or an artifact of running mv_cesa under
> linux-2.6.33.2 ?
> Thanks for any help.
This should not happen unless there were some crucial changes to the
infrastructure in between 2.6.33.2 and 2.6.39.2 (which we're using
here).
You're using the hmac_comp tool, right? Did you hexdump and compare the
results already? Does encryption/hashing of blocks > 1920bytes fail
every time, also on first try (call 'hmac_comp 1920')?
Greetings, Phil
Phil Sutter
Software Engineer
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