Caitlin Bestler wrote:
How much logic is really in the RDMA CM?
If it is sufficiently small, which is what my expectation is,
would it make sense to simply make the IB CM and IW CM conform
to the same polymorphic interface? (Making the "RDMA CM" little
more than a re-directing inline function).
But if there is any substantial portion of common logic
then the above structure definitely makes sense.
The kernel CMA is about 660 lines of code. It performs QP transitions for the
user, abstracts device remove/addition, plus controls the mapping from IP to IB.
(The mapping function makes use of external modules, such as ib_addr and
sa_query.)
In some places, the implementation of the API of the RDMA CM does little more
than redirecting to the IW/IB CM, coupled with synchronization for device
removal. However, it also handles the IB CM callbacks to provide simpler
connection notification.
- Sean
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