[ofw] How to block waiting for a CQE?

[Sean Hefty]

>I had left it vague because I don't know which release will included it.  Sean
>or Stan should be able to clarify.

The target is 2.1.  The code is available now in SVN.  Changes are still
ongoing, especially to support greater scalability, but what's there is usable.

>> That looks awesome, especially if I can ib_arm_cq() once and get
>> notifications/events/blocking behavior for ever without having to
>> rearm() things every loop.
>
>I think you still have to rearm every loop - whatever the behavior of
>libibverbs on Linux should be preserved.  Sean can clarify if there are
>behavior changes that you need to be aware of.

The behavior is the same.  You must still rearm if you want new events
generated.

- Sean