mac80211: allow drivers to provide most station statistics

In many cases, drivers can filter things like beacons that will
skew statistics reported by mac80211. To get correct statistics
in these cases, call drivers to obtain statistics and let them
override all values, filling values from mac80211 if the driver
didn't provide them. Not all of them make sense for the driver
to fill, so some are still always done by mac80211.

Note that this doesn't currently allow a driver to say "I know
this value is wrong, don't report it at all", or to sum it up
with a mac80211 value (as could be useful for "dropped misc"),
that can be added if it turns out to be needed.

This also gets rid of the get_rssi() method as is can now be
implemented using sta_statistics().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 11 insertions, 9 deletions

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 2a99456..8d11b0c 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -5376,14 +5376,15 @@ static void wlcore_op_sta_rc_update(struct ieee80211_hw *hw,
 	wlcore_hw_sta_rc_update(wl, wlvif, sta, changed);
 }
 
-static int wlcore_op_get_rssi(struct ieee80211_hw *hw,
-			       struct ieee80211_vif *vif,
-			       struct ieee80211_sta *sta,
-			       s8 *rssi_dbm)
+static void wlcore_op_sta_statistics(struct ieee80211_hw *hw,
+				     struct ieee80211_vif *vif,
+				     struct ieee80211_sta *sta,
+				     struct station_info *sinfo)
 {
 	struct wl1271 *wl = hw->priv;
 	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
-	int ret = 0;
+	s8 rssi_dbm;
+	int ret;
 
 	wl1271_debug(DEBUG_MAC80211, "mac80211 get_rssi");
 
@@ -5396,17 +5397,18 @@ static int wlcore_op_get_rssi(struct ieee80211_hw *hw,
 	if (ret < 0)
 		goto out_sleep;
 
-	ret = wlcore_acx_average_rssi(wl, wlvif, rssi_dbm);
+	ret = wlcore_acx_average_rssi(wl, wlvif, &rssi_dbm);
 	if (ret < 0)
 		goto out_sleep;
 
+	sinfo->filled |= STATION_INFO_SIGNAL;
+	sinfo->signal = rssi_dbm;
+
 out_sleep:
 	wl1271_ps_elp_sleep(wl);
 
 out:
 	mutex_unlock(&wl->mutex);
-
-	return ret;
 }
 
 static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
@@ -5606,7 +5608,7 @@ static const struct ieee80211_ops wl1271_ops = {
 	.assign_vif_chanctx = wlcore_op_assign_vif_chanctx,
 	.unassign_vif_chanctx = wlcore_op_unassign_vif_chanctx,
 	.sta_rc_update = wlcore_op_sta_rc_update,
-	.get_rssi = wlcore_op_get_rssi,
+	.sta_statistics = wlcore_op_sta_statistics,
 	CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
 };