Permits the data link control (DLC) to change certain profile parameters after the IBM® ARTIC960Hx PCI (PCI MPQP) device has been started.
The MP_CHG_PARMS operation permits the DLC to change certain profile parameters after the PCI MPQP device has been started. The cmd parameter in the tsioctl entry point is set to the MP_CHG_PARMS operation. This operation can interfere with communications that are in progress. Data transmission should not be active when this operation is issued.
For this operation, the extptr parameter points to a t_chg_parms structure. This structure has the following changeable fields:
| Item | Description |
|---|---|
| chg_mask | Specifies the
mask that indicates which fields are to be
changed. The possible choices are:
More than one field can be changed with one MP_CHG_PARMS operation. |
| rcv_timer | Identifies the timeout value used after transmission of final frames when waiting for receive data in 0.1 second units. |
| poll_addr | Specifies the poll address. Possible values are Synchronous Data Link Control (SDLC) or Binary Synchronous Communications (BSC) poll addresses. |
| select_addr | Specifies the select address. BSC is the only possible protocol that supports select addresses. |