An NDIS 3.0 transport driver must include at least the lower-edge functions defined in Table A.2.3. All calls to and from these functions go through the NDIS interface library.
Names of the transport driver functions mentioned in these discussions use Protocol as a generic name to reflect naming conventions used in the original NDIS 3.0 driver design. You will not be writing or changing these functions. For additional information about these functions, see Chapter 3 in the Network Driver Reference.
Table A.2.3 Transport Driver Lower-Edge Functions
| Function | Definition |
| DriverEntry | Called by the operating system to activate and initialize the transport driver. |
| ProtocolCloseAdapterComplete | Called by a NIC driver to indicate asynchronous completion of a MacCloseAdapter operation. |
| ProtocolOpenAdapterComplete | Called by a NIC driver to indicate asynchronous completion of a MacOpenAdapter operation. |
| ProtocolReceive | Called by a NIC driver to indicate that all or part of a packet is available for the transport driver to inspect. |
| ProtocolReceiveComplete | Called by a NIC driver to indicate that a receive operation has completed and to request postprocessing. |
| ProtocolRequestComplete | Called by a NIC driver to indicate asynchronous completion of a MacRequest operation. |
| ProtocolResetComplete | Called by a NIC driver to indicate asynchronous completion of a MacReset operation. |
| ProtocolSendComplete | Called by a NIC driver to indicate asynchronous completion of a MacSend operation. |
| ProtocolStatus | Called by a NIC driver to notify a transport driver of changes in network interface card status. |
| ProtocolStatusComplete | Called by a NIC driver to indicate completion of status reporting for a logical adapter. |
| ProtocolTransferDataComplete | Called by a NIC driver to indicate asynchronous completion of a MacTransferData operation. |