Edit

Share via

NDIS_STATUS_WDI_INDICATION_FT_ASSOC_PARAMS_NEEDED (dot11wificxintf.h)

  • Article

Important

This topic is part of the WiFiCx driver model. WiFiCx is the Wi-Fi driver model released in Windows 11. We recommend that you use WiFiCx to take advantage of the latest features. The previous Wi-Fi driver model WDI is in maintenance mode and will only receive high priority fixes.

WiFiCx drivers use NDIS_STATUS_WDI_INDICATION_FT_ASSOC_PARAMS_NEEDED to request parameters for 802.11r roaming.

Object
Port

During OID_WDI_TASK_ROAM, WDI provides the parameters to send the 802.11 Authentication Request (PmkR0Name, R0KH-ID, SNonce, MDIE). Upon receiving the Authentication response, the LE requests additional needed parameters for the reassociation request, such as PMKR1Name and R1KH-ID. The LE also sends the parameters received in the Authentication Response (ANonce, SNonce, and R1KHID).

For a connection where Initial Mobility Domain is successfully done, the LE should only perform 11r roams (Fast roams). The LE can use the candidate list provided by the operating system, or use their own for the roams. If the LE uses its own candidate list, it must use the parameters (MDE, FTE, and PMKR0Name) provided in any one of the candidates suggested by the operating system to do a 11r roam. 11r is disabled whenever the connection is in FIPS mode. 11r fast roaming is currently only supported for FT over 1x authentication type.

Payload data

Type Multiple TLV instances allowed Optional Description
WDI_TLV_BSSID The BSSID of the AP.
WDI_TLV_FT_AUTH_REQUEST The authentication request byte blob.
WDI_TLV_FT_AUTH_RESPONSE The authentication response byte blob.

Requirements

Requirement Value
Minimum supported client Windows 11
Minimum supported server Windows Server 2022
Header dot11wificxintf.h

See also

OID_WDI_TASK_ROAM