[ofa-general] Queue pair state for multicast group attachment

[Dotan Barak]

I believe that the right QP state to attach it to a multicast group is
in INIT state, since it this state you can post receive request too.
As soon as you will modify the QP state to RTR the multicast messages
will be received by this QP.

Dotan

On Tue, May 5, 2009 at 2:23 PM, Stefan Roscher
<ossrosch at linux.vnet.ibm.com> wrote:
> Hi,
>
> during testing with ib_diag tools (ib_send_lat/bw) we noticed some problems by using multicast
> option. The tools attach queue pairs to multicast groups while the queue
> pairs are in RESET state. In the IB standard there is no specific definition
> when the attach operation should be processed. In our opinion a QP should not be
> attached until it's in  RTR to receive data from the multicast group.
> What is the communitys opinion about that? Is it possible to change the diag tools?
>
> regards Stefan
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