mac80211: add driver RSSI threshold events

mac80211 maintains a running average of the RSSI when a STA
is associated to an AP. Report threshold events to any driver
that has registered callbacks for getting RSSI measurements.

Implement callbacks in mac80211 so that driver can set thresholds.
Add callbacks in mac80211 which is invoked when an RSSI threshold
event occurs.

mac80211: add tracing to rssi_reports api and remove extraneous fn argument
mac80211: scale up rssi thresholds from driver by 16 before storing

Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index edd2dd79c9be..b2d6bba44054 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -657,4 +657,12 @@ static inline void drv_set_rekey_data(struct ieee80211_local *local,
         trace_drv_return_void(local);
 }
 
+static inline void drv_rssi_callback(struct ieee80211_local *local,
+                                     const enum ieee80211_rssi_event event)
+{
+        trace_drv_rssi_callback(local, event);
+        if (local->ops->rssi_callback)
+                local->ops->rssi_callback(&local->hw, event);
+        trace_drv_return_void(local);
+}
 #endif /* __MAC80211_DRIVER_OPS */