[openib-general] IB mcast question

[Steve Wise]

On Tue, 2006-08-15 at 13:17 -0700, Roland Dreier wrote:
>     Steve> I was able to create a mcast group with the mc
>     Steve> qkey==0xe00a0a0a, and 3 apps joined this group, but their
>     Steve> qp qkeys were 0 (I changed ucma_init_ud_qp() to set the qp
>     Steve> qkey to 0).  One app sent to the mcgroup ah/qkey/qpn and
>     Steve> the other two received the packet.  Does that make sense?
> 
> In theory the Q_Key of a multicast group record is the Q_Key you're
> supposed to use when sending to the group.  Of course nothing enforces
> this but I don't really like abusing things this way.
> 

I _did_ send the message to the qkey of the mcg.