[openib-general] Handling SM class (SMInfo vs. other queries)

[Roland Dreier]

One issue was raised earlier, but I forgot it about in the recent
discussion about how MADs are passed to the low-level driver (which
ended with adding the snoop_mad entry point).

The issue is how to process SM class GETs that are handled by the SMA
(nearly every attribute) vs. GETs that need to be handled by the SM
(namely SMInfo).  As the code stands now, the ib_smi module registers
an agent for SM GETs, so there's no way for an SM to receive SMInfo
GET requests.

How do we want to solve this?

 - R.