[openib-general] IBM eHCA testing..

[Heiko J Schick]

Hello Hal,

normally the timeout is set to 30 seconds.  If you need more information 
about the "activation" please see [1].

[1]: http://openib.org/pipermail/openib-general/2005-October/012355.html


Mit freundlichen Gruessen / Kind Regards
Heiko Joerg Schick

IBM Deutschland Entwicklung GmbH
I/Ox Microcode Development
Linux Infiniband Device Drivers

Schoenaicher Str. 220
71032 Boeblingen
E-Mail: schickhj at de.ibm.com
External: 49-7031-16-0 x4219,   t/l: 120-4219




Hal Rosenstock <halr at voltaire.com> 
11.10.2005 14:48

To
Heiko J Schick/Germany/IBM at IBMDE
cc
openib-general at openib.org, Christoph Raisch/Germany/IBM at IBMDE
Subject
Re: Re: Re: [openib-general] IBM eHCA testing..






Hi Heiko,

On Tue, 2005-10-11 at 08:43, Heiko J Schick wrote:
> this morning I've looked in detail into the problem you've reported on 
Oct 
> 10 via the OpenIB mailing-list [1]. It seems that the kernel panic is an 

> IPoIB issues.
> 
> [1]:  
http://openib.org/pipermail/openib-general/2005-October/012353.html
> 
> The following things appens:
> 
> 1.      modprobe hcad_mod ehca_nr_ports=1
>         The eHCA InfiniBand Device Driver is loaded.
> 
> 2.      modprobe ib_mad
>         The ib_mad stack creates an AQP1. This will start the port 
> activation process. 
>         By my count it will take more than 110 / 120 seconds to activate 
a 
> port. 
>         Our device driver gets a timeout, which means that the port is 
NOT 
> active. and
>         ib_modify_qp will not work (for any QP, doesn't matter if it was 

> created in the ib_mad 
>         stack or in the ib_ipoib stack).

Where does this time to activate a port come from ? Is there some
maximum time in which the eHCA firmware requires this to be completed ?

-- Hal


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