[openib-general] new IB CM reject reason

[Sean Hefty]

We've hit into an issue with the IB CM reject reason codes.  When a remote
application crashes during connection establishment, the connection will be
rejected by the kernel CM.  Unfortunately, there's not a decent reject reason
that maps to this event.  Currently, the ib_cm issues the reject as consumer
defined (code 28).

I'd like to propose adding reject reason 0, which would mean other/unknown/or
none given.  This is a deviation from the spec, but does anyone know of any
issues with such an approach?

- Sean