From: Arend van Spriel
Date: Sun Aug 12 2018 - 14:45:04 EST

On 8/12/2018 8:14 PM, Kalle Valo wrote:
Kristian Evensen <kristian.evensen@xxxxxxxxx> writes:

Enable the use of CQM with mt76-devices.

Signed-off-by: Kristian Evensen <kristian.evensen@xxxxxxxxx>
drivers/net/wireless/mediatek/mt76/mac80211.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 029d54bc..3eb328ff 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -305,6 +305,8 @@ int mt76_register_device(struct mt76_dev *dev, bool vht,

wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;

+ wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);

So have you tested this and with what devices? For example, does it work
with recently added USB devices?

I was looking into this as it looks suspicious to me. From reading the description of this ext_feature flag it seems this is an extention of CQM:

* @NL80211_EXT_FEATURE_CQM_RSSI_LIST: With this driver the
* %NL80211_ATTR_CQM_RSSI_THOLD attribute accepts a list of zero or more
* RSSI threshold values to monitor rather than exactly one threshold.

Also looking at mt76x2_bss_info_changed() it does not handle BSS_CHANGED_CQM so I doubt it has support for it (yet). The driver does not use IEEE80211_VIF_SUPPORTS_CQM_RSSI which is a requirement for it.