[openib-general] Re: How to debug QP INIT->RTR -22 error

[Steve Wooding]

Thanks Michael,

Just looking at the kernel-space code gives me a few things to check 
with my app.

Cheers,

Steve.

Michael S. Tsirkin wrote:

>Quoting r. Steve Wooding <steve_wooding at keysounds.co.uk>:
>  
>
>>Subject: How to debug QP INIT->RTR -22 error
>>
>>Hi there,
>>
>>I'm trying to make a QP connection using the CM, but the active side 
>>cannot get to the RTR state. ibv_modify_qp returns errorno -22, invalid 
>>argument.
>>
>>What would the best way to find out exactly what the error is and help 
>>me fix my app (just to say, it is only my app that's broken, nothing 
>>else)? Would turning kernel debugging on be helpful at all?
>>
>>Thanks everyone,
>>
>>
>>Steve.
>>    
>>
>
>Yes, enabling debug messages in mthca is typically helpful.
>The relevant code with tests is in mthca_qp.c, function mthca_modify_qp,
>and in uverbs_cmd.c, ib_uverbs_modify_qp.
>
>  
>