Re: [Ocf-linux-users] OCF's ixp4xx freeze on 2.6.18-rt7

[David M. <Dav...@se...>]

Jivin Tomasz Rostanski lays it down ...
> Hi,
> 
> I have checked the latest ixp400 access lib (2.4) and ixp_400 ethernet 
> driver (1.7). I didn't use the Intel patches for crypto initialization 
> in ixp400_eth.
> The result is still the same - the device freezes when I run openssl or ssh.
> I'm having microcode compiled in driver - load it from file to 
> /dev/ixNpe, so I have recompiled it and load the microcode from file but 
> this didn't make any difference.

Are you using the "crypto version" of the access library ?

> Could this issue be related with the hardware? I'm using the AirTegrity 
> box which was designed completely by them and not uses redboot 
> bootloader but their own one. Could it be the reason of the problem I'm 
> having?

No,  we do the same,  it has no bearing on how the NPE's do their thing.

Are you loading the correct NPE code (with crypto support etc).

> I'll give a try on Gateworks GW2347 and see if it will be working as it 
> should or not.

ok,  don't know that board,

Cheers,
Davidm

> David McCullough napisa?(a):
> >Jivin Tomasz Rostanski lays it down ...
> >>Hi,
> >>
> >>>Which access library version are you using ?
> >>The full name is ixp400accesslibrarywithcrypto-2.3.1
> >
> >Ok,  not sure we have tested OCF with version 2.3 of the access lib.
> >It is part of our tree so I will try it.
> >
> >Not sure you mentioned which sources you are using,  but the
> >uClinux-dist or SnapGear dists have very good IXP425 support
> >and less patching ;-)
> >
> >>>Can you load ocf, cryptodev and ixp4xx all with debug enabled:
> >>>
> >>>	modprobe ocf crypto_debug=1
> >>>	modprobe cryptodev cryptodev_debug=1
> >>>	modprobe ixp4xx ixp_debug=1
> >>>
> >>>The run the test, capture all the console output and send me a copy
> >>>for reference.
> >>The output is attached (ocf.log).
> >
> >Ok,  I will try and get some time on it in the next day or so, thanks.
> >
> >Actually,  just had a quick look,  I think the access lib is blowing the
> >stack.  It is renowned for doing this.
> >
> >If you can try increasing the kernel stack size to 8K if it isn't
> >already it might help.
> >
> >Otherwise,  you may find the info to fix it in our access lib patch:
> >
> >	http://ftp.snapgear.org/pub/snapgear/src/snapgear-modules-20061012.sh
> >
> >Or perhaps try the Snapgear/uClinux-dist if you have time.  We have all
> >these sort or problems sorted already ;-)
> >
> >>>Have you tried turning off preemption ?  I don't think I have ever
> >>>tested with that.
> >>Yes, I have tried but didn't help :(
> >
> >Oh well,  looks like a real bug then ;-)
> >
> >Cheers,
> >Davidm
> >
> >>>>David McCullough napisa?(a):
> >>>>>Jivin Tomasz Rostanski lays it down ...
> >>>>>>Hi,
> >>>>>>
> >>>>>>I tried using ixp4xx module for hardware crypto on my ixp425 device 
> >>>>>>with kernel 2.6.18-rt7 (PREEMPT_DESKTOP). I'm using ixp400 access 
> >>>>>>library with crypto in version 2.3.1 and ixp400_eth driver in version 
> >>>>>>1.6 (with Intel's patch for OCF support - 
> >>>>>>http://downloadcenter.intel.com/detail_desc.aspx?ProductID=2100&DwnldID=11266&agr=Y).
> >>>>>>
> >>>>>>I'm loading the modules like described in Intel readme:
> >>>>>>mknod /dev/crypto c 10 70
> >>>>>>mknod -m 666 /dev/ixNpe c 241 0
> >>>>>>modprobe ixp400 >/dev/null 2>/dev/null
> >>>>>>modprobe ixp400_eth >/dev/null 2>/dev/null
> >>>>>>modprobe ocf
> >>>>>>modprobe cryptodev
> >>>>>>modprobe ixp4xx ixp_init_crypto=0
> >>>>>>
> >>>>>>Then when I run the: openssl speed -elapsed -evp des-ede3-cbc -cpu 
> >>>>>>-engine cryptodev the device hangs (I'm using openssl-0.9.8a patched 
> >>>>>>for OCF). The same happend when I tried to connect from the device 
> >>>>>>using ssh.
> >>>>>>I have enabled debugging and saw that the debugging from 
> >>>>>>ixp_q_process is the last one displayed. So I have started adding 
> >>>>>>some debug messages to that function and found that the hand appears 
> >>>>>>after the following code:
> >>>>>>if (IX_CRYPTO_ACC_STATUS_SUCCESS == status)
> >>>>>>	return;
> >>>>>>So I have changed return to goto done and check what will happen - 
> >>>>>>this time the openssl didn't hang and did it's work. But the ssh is 
> >>>>>>not working - displays evp_crypt: EVP_Cipher failed and exits.
> >>>>>>
> >>>>>>I have tried the cryptosoft module instead of ixp4xx and this one 
> >>>>>>works without any problems, so it seems that some problem exists in 
> >>>>>>ixp4xx module.
> >>>>>>
> >>>>>>Do you have any clue what could be wrong? I'm almost sure that 
> >>>>>>someday on older kernel (2.6.12) I got ixp4xx working without 
> >>>>>>problems.
> >>>>>You might want to try incorporating the latest code from the 
> >>>>>sourceforge
> >>>>>site.  I haven't seen a like up like you describe on the ixp for a long
> >>>>>time and I don't know exactly everything that is in the Intel patches.
> >>>>>
> >>>>>Try out the latest download at:
> >>>>>
> >>>>>	ocf-linux.sourceforge.net
> >>>>>
> >>>>>and then it will be much easier for me to help you.  I run IXP boards
> >>>>>here and can easily try some things,
> >>>>>
> >>>>>Cheers,
> >>>>>Davidm
> >>>>>
> >
> 

-- 
David McCullough,  dav...@se...,   Ph:+61 734352815
Secure Computing - SnapGear  http://www.uCdot.org http://www.cyberguard.com