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.

the assert message's file and line number gives some clue as to the
real location of the problem.

Added similar assertions to list.h.

the assert message's file and line number gives some clue as to the
real location of the problem.

Added similar assertions to list.h.

equivalents for alloc_pkb() and free_pkb(), which will be retired in
due course).