This information is forwarded in NET_BUFFER structures to higher-layer drivers. In addition, this NIC and its driver support extracting the appropriate information from the MAC headers of packets received from the network. The appropriate information is generated in the MAC headers of packets and transmitted over the network. Packet-priority values are received in NET_BUFFER structures from higher-layer drivers. For more information, see Packet Priority. The NIC and its driver support 802.1p packet priority. Note This flag has been deprecated for use by NDIS 5.0 and later miniport drivers. The miniport driver supports full-duplex transmits and indications on SMP platforms. A miniport driver cannot provide its own software loopback as efficiently as NDIS, so every miniport driver should set this flag unless a NIC has hardware loopback support. The NIC has no internal loopback support so NDIS will manage loopbacks on behalf of this driver. The miniport driver never completes receive indications asynchronously.Ī miniport driver that indicates receive operations with the NdisMIndicateReceiveNetBufferLists function should set this flag. That is, such a driver does not enter a new receive indication until the previous receive, if any, has been completed. The miniport driver indicates packets in a serial manner. If a miniport driver does set this flag, it relaxes the restriction on fast-copy functions. Miniport drivers that indicate data out of mapped device memory should never set this flag. Some fast-copy functions have trouble accessing on-board device memory. The protocol driver is free to access indicated data by any means. The following flags are currently defined: NDIS handles this OID for NDIS 6.0 and later miniport drivers.Ī protocol that initiates this query can determine which of the flags the underlying driver sets, and can optionally take advantage of them. Windows Vista and later versions of Windows As a query, the OID_GEN_MAC_OPTIONS OID specifies a bitmask that defines optional properties of the underlying driver or a NIC.
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