[ofa-general] [PATCH 7/8 V3] core: Add XRC receive-only qp support

[Jack Morgenstein]

On Sunday 03 February 2008 19:30, Tang, Changqing wrote:
> >
> > In addition, the patch implements the foundation for
> > distributing XRC-receive-only QP events to userspace
> > processes registered with that QP.
> 
> If r1 is on node1, r2 and r3 are on node2, r1 and r2 have the
> XRC conection established, r1 knows SRQ number from both r2 and
> r3, but r3 does not register the recv QP created by r2, can r3
> still receive message from r1 ?

Yes, it can.  However, when r2 either unregisters the recv QP, or
exits, that QP will be destroyed, and r3 will no longer be able
to receive messages via the recv QP created by r2.

If, however, r3 does register with the recv QP, that QP will not
be destroyed until r3 unregisters (or exits).

- Jack