[openib-general] IPoIB multicast group creation

[Sean Hefty]

>For the broadcast group, it depends on the SM having pre-created the
>broadcast group.  It only does a join (i.e. component mask doesn't
>provide all the settings to create the group) for the broadcast group.

This is what I thought.  I just didn't understand why there was code to create
new groups.

>Once in the broadcast group, it uses it as a template for all other
>groups, which allows it to issue a join with all paramters necessary
>to create the group if it doesn't exist already.  I believe the only
>field that changes is the MGID.

Are the new groups for IP multicast groups?

- Sean