NTOpenConnection(
  IN  tDEVICECONTEXT  *pDeviceContext,
  IN  PIRP            pIrp
  );
Routine Description:

    This Routine handles converting an Open Connection Request from an IRP to
    a procedure call so that NbtOpenConnection can be called in an OS independent
    manner.  The connection must be associated with an address before it
    can be used, except for in inbound call where the client returns the
    connection ID in the accept.

Arguments:

    pIrp - a  ptr to an IRP

Return Value:

    NTSTATUS - status of the request