[openib-general] [PATCHv2] IB/ipoib: Fix ipoib handling for pkey reordering

[Roland Dreier]

 > I just gave this a cursory glance.

I haven't really read it except to think "why is this so complicated"?

 > A suggestion: would it not be much simpler to modify the QP from RTS to RTS on pkey
 > change?

Changing the P_Key index is not allowed for RTS->RTS.  You would have
to modify the QP RTS->SQD, wait for the SQ to drain, then modify the
P_Key index with SQD->SQD, and finally go SQD->RTS.

 - R.