WIFI_WIFIDIRECT_CAPABILITIES structure (wificx.h)
The WIFI_WIFIDIRECT_CAPABILITIES structure describes the Wi-Fi Direct capabilities for a WiFiCx device.
Syntax
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;
} WIFI_WIFIDIRECT_CAPABILITIES;
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.
Remarks
Client drivers pass WIFI_WIFIDIRECT_CAPABILITIES as a parameter to WifiDeviceSetWiFiDirectCapabilities to report Wi-Fi Direct capabilities to WiFiCx.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 11 |
| Minimum supported server | Windows Server 2022 |
| Header | wificx.h |
See also
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