[ofa-general] Problem with dropped CQE's on RDMA CM channel

[Mike Heffner]

Roland Dreier wrote:
>  > That's what I was worried about. Is there anyway to manually flush a
>  > QP before disconnecting it?
> 
> What do you mean by flushing the QP?  There's no way to make the QP
> execute work requests any faster, but you can wait for all your
> requests to complete before you disconnect it.

Yes, I would like to wait for the ACK's of messages sent to me to 
correctly arrive at the sender.

>  Or if you transition
> the QP to the error state, then all the outstanding work requests will
> be completed with a "flush error" status, and you can poll your CQ
> until you know there are no more outstanding work requests before you
> transition the QP to the reset state and/or destroy the QP.

That would be fine. I'll try manually transitioning the QP to the error 
state before calling rdma_disconnect() in case the QP is going to 
"reset" and dropping ACK responses.

> 
>  - R.
> 
> 



-- 

   Mike Heffner <mike.heffner at evergrid.com>
   EverGrid Software
   Blacksburg, VA USA

   Voice: (540) 443-3500 x603