[openib-general] multicast code/merge status

[Sean Hefty]

> mimic IPoIB qkey flow:
> 
> +3 on rdma_create_qp do modify qp with some def qkey (eg zero)
> +4 on the join completion path before attaching a qp to the associated
> mgid, do modify qp with this mrec qkey (=ipv4 broadcast one)

The rdma cm allows UD QP communication, which requires a valid qkey before or 
without joining a multicast group.  I'd like to find a way to continue to 
support this.

> +3 on rdma_create_qp do modify qp with some def qkey (eg zero)
> +4 on the join completion path before attaching a qp to the associated
> mgid, do modify qp with this mrec qkey (=ipv4 broadcast one)

Isn't the ipoib qkey a privileged qkey?

- Sean