[PATCH v3 ath-next] wifi: ath12k: Add EHT capabilities to scan probe frame

[Baochen Qiang]

On 10/9/2026 5:55 PM, Gaole Zhang wrote:
> ath12k hardware scan Probe Request frames do not include the EHT
> Capabilities element. Without this element, an AP cannot identify the
> STA as EHT-capable during active scanning and may omit EHT-related
> information from its Probe Response. This can result in incomplete scan
> information and prevent userspace from correctly determining the AP's
> EHT capabilities.
> 
> For firmware to include the EHT Capabilities element in scan Probe
> Request frames, two conditions are required:
> 
>   - The scan channel must have WMI_CHAN_INFO_ALLOW_EHT set, which allows
>     firmware to add the EHT Capabilities element to Probe Request frames.
>   - The EHT Capabilities element must be configured on the vdev through
>     WMI_VDEV_SET_IE_CMDID, so firmware can use it when building Probe
>     Request frames.
> 
> Set WMI_CHAN_INFO_ALLOW_EHT for channels when 11be is supported by
> firmware and not disabled by ACPI. Also configure the EHT Capabilities
> element before each hardware scan when the element is present in the
> mac80211 scan IE buffer.
> 
> Firmware retains the configured element in the vdev context until it is
> replaced or the vdev is deleted. However, ath12k scans may either reuse
> an already started vdev or create a temporary scan vdev that is cleaned
> up after scan completion. Sending WMI_VDEV_SET_IE_CMDID for each scan
> request ensures correct behavior in both cases.
> 
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3
> 
> Signed-off-by: Gaole Zhang <gaole.zhang at oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang at oss.qualcomm.com>