OID_GEN_MEDIA_SUPPORTED (Windows Embedded CE 6.0)

1/6/2010

OID_GEN_MEDIA_SUPPORTED specifies the media types that the NIC can support, but not necessarily the media types that the NIC currently uses.

The following table shows the media types that are listed as a proper subset of the indicated system-defined values.

Remarks

A wireless-WAN NIC driver must report its medium type as NdisMediumWirelessWan. However, such a miniport also must provide NdisWWDIXEthernetFrames header format to any bound protocol that selects this format. The miniport can provide its NIC's native header format as well. To support existing LAN-based protocols, the driver writer can provide an NDIS intermediate driver to "translate" a wireless NIC's native header formats and medium-specific information into a form that is understood by existing protocols.

Note that wireless-WAN and wireless-LAN media are different. A wireless-LAN network transfers packets that appear to the operating system and to NDIS as Ethernet packets. Currently, NDIS drivers should provide support for wireless-LAN networks as Ethernet networks. Such drivers declare their medium as NdisMedium802_3 and emulate Ethernet to higher-level NDIS drivers. For more information, see OID_GEN_PHYSICAL_MEDIUM.

If the underlying miniport returns NULL for this query or if an experimental media type is used, the driver must indicate receive operations using the NdisMIndicateReceivePacket function. Any protocol that is bound to such an underlying NIC driver receives all such indications, that is, the protocol cannot filter receive operations with OID_GEN_CURRENT_PACKET_FILTER.

Requirements

See Also

Reference

General Object Identifiers
MiniportQueryInformation
NDIS_REQUEST