802.11k, wpa_supplicant and iwlwifi

802.11k, wpa_supplicant and iwlwifi

[Michael Yartys]

Hi

From what I understand, wpa_supplicant only processes 802.11k frames if the underlying driver indicates support for it through a flag. I haven't really found any information on whether this is the case for iwlwifi. Does anybody know if iwlwifi supports this? I don't know if this also depends on which wireless card that I use, so I'll include it in case it does: Intel 7260AC.

Regards
Michael

Re: 802.11k, wpa_supplicant and iwlwifi

[Johannes Berg]

On Tue, 2021-12-21 at 14:46 +0000, Michael Yartys wrote:
> Hi
> 
> From what I understand, wpa_supplicant only processes 802.11k frames
> if the underlying driver indicates support for it through a flag. I
> haven't really found any information on whether this is the case for
> iwlwifi. Does anybody know if iwlwifi supports this? I don't know if
> this also depends on which wireless card that I use, so I'll include
> it in case it does: Intel 7260AC.
> 

wpa_supplicant will advertise RRM support
(WLAN_EID_RRM_ENABLED_CAPABILITIES) if the driver has certain
capabilities:

        if (!((wpa_s->drv_rrm_flags &
               WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
              (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
            !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) {
                wpa_printf(MSG_DEBUG,
                           "RRM: Insufficient RRM support in driver - do not use RRM");
                return;
        }


That's almost certainly not true for 7260, as far as I remember that
device predates our work to support RRM, and so the firmware wouldn't
have the corresponding capabilities.

johannes