[openib-general] Re: IPOIB_NUM_WC question

[Roland Dreier]

    Sean> Since the application controls posting to the QP, polling
    Sean> events from the CQ, and completion processing, I don't see a
    Sean> low-level having insight into what the application is doing,
    Sean> or what value works best based on the application's
    Sean> completion model, especially if completions are processed in
    Sean> multiple threads.

    Sean> There's also an issue of who owns the completion buffers.
    Sean> Currently, the app is responsible for the allocation of
    Sean> these buffers.  I guess I'd need to see an example of how an
    Sean> app would use a driver provided value with respect to buffer
    Sean> allocation.

I see the confusion now.  In this discussion, the application is the
IPoIB driver.  We're talking about how many CQ entries at a time IPoIB
should try to poll.  And clearly this parameter belongs in the IPoIB driver.

- R.