This patch introduce new api to set rssi single or low/high rssi
threshold value to track the connected stations signal strength.
Signed-off-by: Tamizh chelvam <tamizhr@xxxxxxxxxxxxxx>
---
net/mac80211/cfg.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++
net/mac80211/sta_info.h | 18 ++++++++++++
2 files changed, 93 insertions(+)
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 85dbaa8..0e2047c 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -3705,6 +3705,79 @@ static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
return 0;
}
+static int ieee80211_set_sta_mon_rssi_config(struct wiphy *wiphy,
+ struct net_device *dev,
+ const u8 *peer, s32 rssi_thold,
+ u32 rssi_hyst)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sta_info *sta;
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP &&
+ (!sdata->vif.bss_conf.enable_beacon ||
+ !wiphy_ext_feature_isset(sdata->local->hw.wiphy,
+ NL80211_EXT_FEATURE_STA_MON_RSSI_CONFIG)))
+ return -EOPNOTSUPP;
+
+ mutex_lock(&sdata->local->sta_mtx);
+
+ sta = sta_info_get_bss(sdata, peer);
+ if (!sta) {
+ mutex_unlock(&sdata->local->sta_mtx);
+ return -ENOENT;
+ }
+
+ if (sta->rssi_thold == rssi_thold &&
+ sta->rssi_hyst == rssi_hyst)
+ goto unlock;
+
+ sta->rssi_thold = rssi_thold;
+ sta->rssi_hyst = rssi_hyst;
+ sta->rssi_low = 0;
+ sta->rssi_high = 0;
+ sta->last_sta_mon_event_signal = 0;
+unlock:
+ mutex_unlock(&sdata->local->sta_mtx);
+ return 0;
+}
+
+static int ieee80211_set_sta_mon_rssi_range_confg(struct wiphy *wiphy,
+ struct net_device *dev,
+ const u8 *peer,
+ s32 rssi_low, s32 rssi_high)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct sta_info *sta;
+
+ if (sdata->vif.type == NL80211_IFTYPE_AP &&
+ (!sdata->vif.bss_conf.enable_beacon ||
+ !wiphy_ext_feature_isset(sdata->local->hw.wiphy,
+ NL80211_EXT_FEATURE_STA_MON_RSSI_LIST)))
+ return -EOPNOTSUPP;
+
+ mutex_lock(&sdata->local->sta_mtx);
+
+ sta = sta_info_get_bss(sdata, peer);
+ if (!sta) {
+ mutex_unlock(&sdata->local->sta_mtx);
+ return -ENOENT;
+ }
+
+ if (sta->rssi_low == rssi_low &&
+ sta->rssi_high == rssi_high)
+ goto unlock;
+
+ sta->rssi_thold = 0;
+ sta->rssi_hyst = 0;
+ sta->rssi_low = rssi_low;
+ sta->rssi_high = rssi_high;
+ sta->last_sta_mon_event_signal = 0;
+
+unlock:
+ mutex_unlock(&sdata->local->sta_mtx);
+ return 0;
+}
+
const struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@@ -3798,4 +3871,6 @@ static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
.del_nan_func = ieee80211_del_nan_func,
.set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
.tx_control_port = ieee80211_tx_control_port,
+ .set_sta_mon_rssi_config = ieee80211_set_sta_mon_rssi_config,
+ .set_sta_mon_rssi_range_config = ieee80211_set_sta_mon_rssi_range_confg,
};
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index f64eb86..701eb37 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -481,6 +481,18 @@ struct ieee80211_sta_rx_stats {
* @pcpu_rx_stats: per-CPU RX statistics, assigned only if the driver needs
* this (by advertising the USES_RSS hw flag)
* @status_stats: TX status statistics
+ * @rssi_thold: RSSI threshold to monitor station's signal strength, a zero
+ * value implies disabled. As with the cfg80211 callback, a change here
+ * should cause an event to be sent indicating where the current value
+ * is in relation to the newly configured threshold
+ * @rssi_hyst: Station's RSSI hysteresis
+ * @rssi_low: RSSI lower threshold to monitor station's signal strength, a zero
+ * value implies disabled. This is an alternative mechanism to the single
+ * threshold event and can't be enabled simultaneously with it
+ * @rssi_high: RSSI upper threshold for station
+ * @last_sta_mon_event_signal: Last signal strength average for a station
+ * that triggered a sta_mon event. 0 indicates that no event has been
+ * generated for the current association
*/
struct sta_info {
/* General information, mostly static */
@@ -581,6 +593,12 @@ struct sta_info {
struct cfg80211_chan_def tdls_chandef;
+ s32 rssi_thold;
+ u32 rssi_hyst;
+ s32 rssi_low;
+ s32 rssi_high;
+ int last_sta_mon_event_signal;
+
/* keep last! */
struct ieee80211_sta sta;
};
--
1.9.1
