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DOT11_SUPPORTED_ANTENNA_LIST (Compact 7)

  • Article

3/12/2014

This structure specifies a list of antennas that can be used for receive or transmit operations.

Syntax

typedef struct _DOT11_SUPPORTED_ANTENNA_LIST {
  ULONG  uNumOfEntries;
  ULONG  uTotalNumOfEntries;
  DOT11_SUPPORTED_ANTENNA  dot11SupportedAntenna[1];
} DOT11_SUPPORTED_ANTENNA_LIST, *PDOT11_SUPPORTED_ANTENNA_LIST;

Members

  • uNumOfEntries
    The number of entries in the dot11SupportedAntenna array. A zero value for the uNumOfEntries member indicates an empty list.
  • uTotalNumOfEntries
    The maximum number of entries that the dot11SupportedAntenna array can contain
  • dot11SupportedAntenna
    The list of supported antennas. Each element in this list is formatted as a DOT11_SUPPORTED_ANTENNA structure.

Remarks

A miniport driver returns the DOT11_SUPPORTED_ANTENNA_LIST structure when queried by either OID_DOT11_SUPPORTED_RX_ANTENNA or OID_DOT11_SUPPORTED_TX_ANTENNA.

When these OIDs are queried, the miniport driver must verify that the InformationBuffer member of the MiniportOidRequest function’s OidRequest parameter is large enough to return the complete DOT11_SUPPORTED_ANTENNA_LIST structure. This includes all entries in the dot11SupportedAntenna array. The value of the InformationBufferLength member of the OidRequest parameter determines what the miniport driver must do, as the following list shows:

  • If the value of the InformationBufferLength member is less than the length, in bytes, of the complete DOT11_SUPPORTED_ANTENNA_LIST structure, the miniport driver must do the following:
    • Set the uNumOfEntries member to zero
    • Set the uTotalNumOfEntries member to the number of entries in the dot11SupportedAntenna array
      For the OidRequest parameter, set the BytesWritten member to zero and the BytesNeeded member to the length, in bytes, of the complete DOT11_PHY_ID_LIST structure.
    • Fail the query request by returning NDIS_STATUS_BUFFER_OVERFLOW from its MiniportOidRequest function.
  • If the value of the InformationBufferLength member is greater than or equal to the length, in bytes, of the complete DOT11_SUPPORTED_ANTENNA_LIST structure, the miniport driver must do the following to complete a successful query request:
    • For the DOT11_SUPPORTED_ANTENNA_LIST structure, set the uNumOfEntries and uTotalNumOfEntries members to the total number of entries in the dot11SupportedAntenna array
    • For the OidRequest parameter, set the BytesNeeded member to zero and the BytesWritten member to the length, in bytes, of the complete DOT11_SUPPORTED_ANTENNA_LIST structure. The miniport driver must also copy the complete DOT11_SUPPORTED_ANTENNA_LIST structure to the InformationBuffer member.
    • Return NDIS_STATUS_SUCCESS from its MiniportOidRequest function

Requirements

Header

windot11.h

See Also

Reference

Native 802.11 Data Types
DOT11_SUPPORTED_ANTENNA
OID_DOT11_SUPPORTED_RX_ANTENNA
OID_DOT11_SUPPORTED_TX_ANTENNA
MiniportOidRequest
DOT11_PHY_ID_LIST
Native 802.11 Wireless LAN Reference