If the extended feature for CQM levels was not supported no CQM registration would happen, not even for a single level. This caused IWD to completely lose the ability to roam since it would only get notified when the kernel was disconnecting, around -90 dBm, not giving IWD enough time to roam. Instead if the extended feature is not supported we can still register for the event, just without multiple signal levels. --- src/netdev.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/src/netdev.c b/src/netdev.c index 7a10bf0e..1f2aa51c 100644 --- a/src/netdev.c +++ b/src/netdev.c @@ -4427,9 +4427,10 @@ static int netdev_cqm_rssi_update(struct netdev *netdev) if (!wiphy_has_ext_feature(netdev->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST)) - return 0; - - msg = netdev_build_cmd_cqm_rssi_update(netdev, netdev->rssi_levels, + msg = netdev_build_cmd_cqm_rssi_update(netdev, NULL, 0); + else + msg = netdev_build_cmd_cqm_rssi_update(netdev, + netdev->rssi_levels, netdev->rssi_levels_num); if (!msg) return -EINVAL; -- 2.26.2