Connectionless miniport drivers are further divided into deserialized and serialized drivers: NDIS supports miniport drivers for both connectionless environments and connection-oriented environments.Ĭonnectionless miniport drivers control NICs for connectionless network media, such as Ethernet. The miniport driver sets up the transfer of data from the NIC and then indicates the presence of the received packet to bound higher-level drivers by calling the appropriate Ndis Xxx function.Ĭonnectionless and Connection-Oriented Miniport Drivers NDIS notifies the NIC's miniport driver by calling the appropriate MiniportXxx function. When a NIC receives a packet addressed to itself, it can post a hardware interrupt that is handled by NDIS or the NIC's miniport driver. The miniport driver then forwards the packet to the NIC for transmission by calling the appropriate Ndis Xxx functions. NDIS then passes the packet to the miniport driver by calling the appropriate MiniportXxx function exported by the miniport driver.

When a transport driver has a packet to transmit, it calls an Ndis Xxx function exported by the NDIS library. The following send and receive operations illustrate the interaction of miniport drivers with NDIS and with higher-level drivers: For more information about the NDIS driver stack and a diagram showing the relationship between all four NDIS driver types, see NDIS Driver Stack.

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