[openib-general] IPoIB broadcast MC group membership

[Roland Dreier]

    Fabian> The only paramter that can be problematic is the QKey, but
    Fabian> it's not a problem for it to just make one up, as long as
    Fabian> it's a privileged one. All other parameters can be taken
    Fabian> from the local port info.

Actually all of the extra parameters (Q_Key, SL, flow label, traffic
class) are policy decisions that don't have a clear default for the
driver to choose.

    Fabian> What is the behavior of SMs that pre-create the group in
    Fabian> response to a GET query for the MC group parameters?  Does
    Fabian> the query return a record, or does it fail with no
    Fabian> records?

I guess it depends on the SM.

Do you know of an SM that has problems with the existing Linux IPoIB driver?

 - R.