Re: Problem running rping over Intel adapters

[Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>]

On 10/3/2012 5:02 PM, Hefty, Sean wrote:
>>>> 1) rping, on the client side, clears the conn_params for the newly to be
>>>> attempted connection, then sets:
>>>>
>>>> 	conn_param.responder_resources = 1;
>>>> 	conn_param.initiator_depth = 1;
>>>> 	conn_param.retry_count = 10;
>>>
>>>> 2) the qib driver enforces a maximum of 7 for retry_count.  I don't see
>>>> anything in the spec that specifies a maximum for this entry, and in
>>>> particular I know it doesn't call out for 7 to mean infinite retries
>>>> like it does for rnr_retry_count.
>>> On IB, retry count is a 3-bit value.  See the CM REQ message.
>>>
>>> The kernel rdma cm should probably check for a valid value and reduce it
>> accordingly.
>>
>> Then it's also fair to say that right now rping passes a known invalid
>> value and needs fixed ;-)
> For IB, but I wasn't sure about iWarp.  It doesn't look like it's used there though.
>
> If not, I'll apply a patch to rping, plus submit a fix for the kernel to validate the value.
> --

Not used by iwarp drivers...

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