WIFI_WIFIDIRECT_CAPABILITIES - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// wificx.h

typedef struct _WIFI_WIFIDIRECT_CAPABILITIES {
  ULONG                   Size;
  UINT8                   WFDRoleCount;
  UINT8                   ConcurrentGOCount;
  UINT8                   ConcurrentClientCount;
  BOOLEAN                 ServiceDiscoverySupported;
  BOOLEAN                 ServiceNameDiscoverySupported;
  BOOLEAN                 ServiceInformationDiscoverySupported;
  UINT32                  ServiceNameAdvertisementsMaxBytesSupported;
  UINT32                  ServiceInformationAdvertisementsMaxBytesSupported;
  BOOLEAN                 BackgroundDiscoverySupported;
  BOOLEAN                 ClientDiscoverabilitySupported;
  BOOLEAN                 InfrastructureManagementSupported;
  UINT8                   DeviceAddress[6];
  UINT32                  DiscoveryFilterListSize;
  UINT8                   GOClientTableSize;
  UINT32                  MaxVendorSpecificExtensionIESize;
  BOOLEAN                 PassiveAvailabilityListenStateSupported;
  BOOLEAN                 OperatingChannelUpdatesSupported;
  BOOLEAN                 GOon5GHzBandSupported;
  UINT32                  ScanSSIDListSize;
  UINT32                  DesiredSSIDListSize;
  UINT32                  PrivacyExemptionListSize;
  UINT32                  AssociationTableSize;
  UINT32                  DefaultKeyTableSize;
  UINT32                  WEPKeyValueMaxLength;
  UINT32                  NumSupportedUnicastAlgorithms;
  PDOT11_AUTH_CIPHER_PAIR UnicastAlgorithms;
  UINT32                  NumSupportedMulticastDataAlgorithms;
  PDOT11_AUTH_CIPHER_PAIR MulticastDataAlgorithms;
  UINT32                  NumInterfaceAddresses;
  WDI_MAC_ADDRESS         *InterfaceAddressList;
  BOOLEAN                 GOon6GHzBandSupported;
} WIFI_WIFIDIRECT_CAPABILITIES;
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Windows Driver Kit DDI reference (ns-wificx-wifi_wifidirect_capabilities)

Description

The WIFI_WIFIDIRECT_CAPABILITIES structure describes the Wi-Fi Direct capabilities for a WiFiCx device.

Members

Size

The sum (in bytes) of the sizes of all contained elements.

WFDRoleCount

Number of supported Wi-Fi Direct Role Ports

ConcurrentGOCount

Specifies the concurrent Group Owner count.

ConcurrentClientCount

Specifies the concurrent Client count.

ServiceDiscoverySupported

Specifies whether Service discovery is supported. Valid values are 0 (not supported) and 1 (supported).

ServiceNameDiscoverySupported

Wi-Fi Direct Service Names Discovery support. Specifies whether, when given a list of service name hashes, the adapter can probe for service hashes and indicate the responses as they arrive. Valid values are 0 (not supported) and 1 (supported).

ServiceInformationDiscoverySupported

Wi-Fi Direct Service Information Discovery support. Specifies whether, when given a list of service name hashes, the adapter can perform probes and ANQP queries to get full service information. Valid values are 0 (not supported) and 1 (supported).

ServiceNameAdvertisementsMaxBytesSupported

Specifies the maximum supported number of Service Name Advertisements bytes (to be sent in the beacon and probe responses). This sets a hard limit on the number of services that can be advertised.

ServiceInformationAdvertisementsMaxBytesSupported

Specifies the maximum supported number of Service Information Advertisement bytes the adapter can respond to using the GAS protocol. This is only valid if the device supports responding to Service Advertisement queries. This value is for firmware optimization so that the firmware does not wake up the host to respond to every query. The operating system does not limit the number of service advertisements if the firmware has a limitation because there is a fallback in the operating system. If the firmware cannot handle the ANQP query response, it should pass up the request and the operating system handles it.

BackgroundDiscoverySupported

Background discovery of Wi-Fi Direct devices and services. Specifies whether the adapter can periodically query for Wi-Fi Direct devices and service names so any new devices show up within 5 minutes of becoming visible. Valid values are 0 (not supported) and 1 (supported).

ClientDiscoverabilitySupported

Specifies whether Client Discoverability is supported. Valid values are 0 (not supported) and 1 (supported).

InfrastructureManagementSupported

Specifies whether infrastructure management is supported. Valid values are 0 (not supported) and 1 (supported).

DeviceAddress[6]

The device address in network byte order.

DiscoveryFilterListSize

The discovery filter list size.

GOClientTableSize

The GO client table size.

MaxVendorSpecificExtensionIESize

The maximum size, in bytes, of vendor specific extension IEs that can be added to WFD management frames.

PassiveAvailabilityListenStateSupported

Specifies whether the ability to listen for P2P Services in the background is supported. Valid values are 0 (not supported) and 1 (supported).

OperatingChannelUpdatesSupported

Specifies whether the adapter supports indicating updates to the GO operating channel(s). Valid values are 0 (not supported) and 1 (supported).

GOon5GHzBandSupported

Specifies whether the adapter supports operating a GO on the 5GHz band. Valid values are 0 (not supported) and 1 (supported).

ScanSSIDListSize

The scan SSID list size.

DesiredSSIDListSize

The desired SSID list size.

PrivacyExemptionListSize

The privacy exemption list size.

AssociationTableSize

The association table size.

DefaultKeyTableSize

The default key table size.

WEPKeyValueMaxLength

The maximum length of the WEP key value.

NumSupportedUnicastAlgorithms

The number of unicast algorithms supported.

UnicastAlgorithms

A pointer to an array of unicast cipher algorithms formatted as DOT11_AUTH_CIPHER_PAIR structures. The length of this array is specified by the NumSupportedUnicastAlgorithms member.

NumSupportedMulticastDataAlgorithms

The number of multicast data cipher algorithms supported.

MulticastDataAlgorithms

A pointer to an array of multicast data cipher algorithms formatted as DOT11_AUTH_CIPHER_PAIR structures. The length of this array is specified by the NumSupportedMulticastDataAlgorithms member.

NumInterfaceAddresses

The number of interface addresses supported.

InterfaceAddressList

A pointer to an array of interface addresses formatted as WDI_MAC_ADDRESS structures. The length of this array is specified by the NumInterfaceAddresses member.

GOon6GHzBandSupported

A BOOLEAN value that specifies whether the adapter supports operating a GO on 6GHz band. Valid values are 0 (not supported) and 1 (supported).

Remarks

Call WIFI_WIFIDIRECT_CAPABILITIES_INIT to initialize this structure and fill in its Size field. Then call WifiDeviceSetWiFiDirectCapabilities to report Wi-Fi Direct capabilities to WiFiCx.

See also

WIFI_WIFIDIRECT_CAPABILITIES_INIT

WifiDeviceSetWiFiDirectCapabilities

View the official Windows Driver Kit DDI reference

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