[openib-general] Re: ipoib multicast timeouts

[Roland Dreier]

    Sean> Ah - okay, I didn't realize that ipoib needed this.  I
    Sean> thought that it was doing this itself in order to attach the
    Sean> multicast group to the QP and create the address handle.
    Sean> (I've just started looking at the code in detail, so I could
    Sean> easily be off on the operation.)

No, IPoIB doesn't need reference counting.  But suppose IPoIB joins a
group and a userspace process also joins the group.  When the
userspace process leaves, the port had better remain a member of the group.

 - R.