[ofa-general] mlx4 changing RNR_RETRY for an established qp

[Roland Dreier]

>> With RDS-level flow control enabled, RDS attempts to set rnr_counter to
>> 0 on an already connected QP by transitioning through SQD state. SQD is
>> not supported on ConnectX, and so we either need do it the right way or
>> make other plans.

Is SQD really not supported by ConnectX?  If so it is likely a temporary
firmware issue I would think.

 - R.