[ofa-general] SDP and iWARP

[Jim Mott]

SDP kernel modules do use rdma CMA.

You can get a little info from the kernel module by setting debug:
  echo 1 > /sys/modules/ib_sdp/debug_level
Use dmesg to read the output.  This might give you enough info to get to
the root of the problem.

  Before you start adding printf()s, you can rebuild with
CONFIG_INFINIBAND_SDP_DEBUG_DATA defined.  I just stick a #define at the
top of sdp.h.  Then:
  echo 1 > /sys/modules/ib_sdp/data_debug_level

JIm

-----Original Message-----
From: general-bounces at lists.openfabrics.org
[mailto:general-bounces at lists.openfabrics.org] On Behalf Of Steve Wise
Sent: Tuesday, January 08, 2008 12:39 PM
To: Craig Prescott
Cc: general at lists.openfabrics.org
Subject: Re: [ofa-general] SDP and iWARP



Craig Prescott wrote:
> Steve Wise wrote:
>>
>>
>> Craig Prescott wrote:
>>>
>>> Hi;
>>>
>>> Before the holidays, I tried a netperf SDP_STREAM
>>> test between a pair of Chelsio S310-SR iWARP cards
>>> using OFED 1.2, which crashed the netperf client
>>> host.  Using OFED-1.3-20080107-0942 on both hosts
>>> the crash no longer happens, which is great, but it
>>> isn't working quite yet:
>>
>> Hey Craig,
>>
>> SDP currently isn't suppored over the Chelsio RNICs.  No testing has 
>> been done.
>>
>
> Hi Steve;
>
> I understand - just following up on the short thread from
> before the holidays where I started looking at this.
>
That was sooo last year. :)

> I'm interested to try to make it SDP work anyway on these RNICs
> for a project we are working on.  I am willing to put in some
> time to work on this and (if successful) do some testing and
> report back (if anyone is interested), and would be grateful
> for any advice or help from this list.
>

Ok. 

First make sure the sdp kernel module uses the rdma cma.  Then I'd add 
printk hooks in cma.c, addr.c, and iwcm.c to see what's going on and 
where things are failing.  Also a wire trace is good if we're getting 
that far (like at least doing arp resolution).

I haven't looked at the sdp code at all, so you'll have to do the leg
work.

Thanks!

Steve.



> Cheers,
> Craig
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