Hello, I have a project where I want to establish Wi-Fi connection to a hidden SSID, on DFS channel. I am running wpa_supplicant 2.9 on a device with: "Linux 4.9.51-yocto-standard armv7l" and "Network controller: Qualcomm Atheros AR958x 802.11abgn Wireless Network Adapter (rev 01)" Sounds an old project, I know, but want to bring this alive, if possible. Unfortunately, connection to a hidden SSID on DFS channel seems not working. However, it works on a different, newer device, which has "Linux raspberrypi 5.10.17-v7l+ armv7l" and "PCI bridge: Broadcom Limited Device 2711 (rev 10)". The wpa_supplicant on the two devices is mostly idem: same v2.9, same runtime configuration, almost all config variables (wpa_cli dump) match (not seen relevant difference). There might be compile option difference, but don't think they are relevant. The only thing I see is with driver flags, where the newer device supports flags like DFS_OFFLOAD, BSS_SELECTION, or 4WWAY_HANDSHAKE_PSK, but the older device does not offer these. So I suspect the issue is due to some of the above missing features in my ath9k driver (have default driver provided by kernel). Questions: - is it possible to enable the above driver flags/features for ath9k? If so, how to enable and are there patches for these? - any hint where to look in ath9k driver for passive scanning implementation? Is there another module/location where passive scanning is implemented? - any suggestions for a solution to my issue? Thanks, Koppany
