The latest RTL-generated register lists include (mostly redundant)
xxx_MSB values alongside xxx_LSB and xxx_RMASK, and also include
default register values.
These cards very nearly support our current IB Verbs model. There is
one minor difference: multicast packets will always be delivered by
the hardware to QP0, so the driver has to redirect them to the
appropriate QP. This means that QP owners may see receive completions
for buffers that they never posted. Nothing in our current codebase
will break because of this.
Michael Brown