[openib-general] IB mcast question

[Sean Hefty]

Steve Wise wrote:
> So is this replicating done in the mthca hca?  

As just an FYI, I didn't see anything wrong in the mthca driver either when I 
was looking at this problem.

> Since one app is getting the mcast packet, can I assume the opensm code
> is doing the right thing switch/port wise?

That seems like a fairly safe assumption.

> Should the SM get join requests for both applications that join the
> group on the same host?  Or only the first one?

Only the first join request should make it to the SA.  The second join request 
is fulfilled by ib_multicast.  This is what makes ib_multicast suspect.

- Sean