qcacld-3.0: Report best RSSI and SNR in the ML STA links

On userspace query for link stats, in case of ML STA,
analyze all eligible links and send the best value of them.

Change-Id: I9d44efd24053b24e6427a96b2cd658ff8deeeb70
CRs-Fixed: 3359920

core/hdd/src/wlan_hdd_stats.c

@@ -6080,6 +6080,72 @@ wlan_hdd_refill_actual_rate(struct rate_info *os_rate,
 }
 #endif
 
+#if defined(WLAN_FEATURE_11BE_MLO) && defined(CFG80211_11BE_BASIC)
+static inline void wlan_hdd_populate_mlo_rssi(int8_t *rssi, int8_t *link_rssi)
+{
+	if (!(*rssi) || !(*link_rssi))
+		*rssi = QDF_MIN(*rssi, *link_rssi);
+	else
+		*rssi = QDF_MAX(*rssi, *link_rssi);
+}
+
+static inline void wlan_hdd_populate_mlo_snr(int32_t *snr, int32_t *link_snr)
+{
+	*snr = QDF_MAX(*snr, *link_snr);
+}
+
+static inline void wlan_hdd_mlo_update_stats_info(struct hdd_adapter *adapter)
+{
+	int8_t *rssi, *link_rssi;
+	uint32_t *snr, *link_snr;
+	uint8_t iter;
+	struct hdd_mlo_adapter_info *mlo_adapter_info;
+	struct hdd_adapter *link_adapter;
+	struct wlan_objmgr_vdev *vdev;
+
+	rssi = &adapter->hdd_stats.summary_stat.rssi;
+	snr = &adapter->hdd_stats.summary_stat.snr;
+
+	vdev = hdd_objmgr_get_vdev_by_user(adapter, WLAN_CP_STATS_ID);
+	if (!vdev)
+		return;
+
+	/* For non ML connection just
+	 * update the values in the adapter
+	 */
+	if (!wlan_vdev_mlme_is_mlo_vdev(vdev)) {
+		hdd_objmgr_put_vdev_by_user(vdev, WLAN_CP_STATS_ID);
+		goto stat_update;
+	}
+	hdd_objmgr_put_vdev_by_user(vdev, WLAN_CP_STATS_ID);
+
+	hdd_debug("Link0: RSSI: %d, SNR: %d", *rssi, *snr);
+	mlo_adapter_info = &adapter->mlo_adapter_info;
+	for (iter = 0; iter < WLAN_MAX_MLD; iter++) {
+		link_adapter = mlo_adapter_info->link_adapter[iter];
+		if (!link_adapter ||
+		    link_adapter->mlo_adapter_info.associate_with_ml_adapter)
+			continue;
+
+		link_rssi = &link_adapter->hdd_stats.summary_stat.rssi;
+		wlan_hdd_populate_mlo_rssi(rssi, link_rssi);
+
+		link_snr = &link_adapter->hdd_stats.summary_stat.snr;
+		wlan_hdd_populate_mlo_snr(snr, link_snr);
+		hdd_debug("Partner Link: RSSI: %d, SNR: %d",
+			  *link_rssi, *link_snr);
+	}
+
+stat_update:
+	adapter->rssi = *rssi;
+	adapter->snr = *snr;
+}
+#else
+static inline void wlan_hdd_mlo_update_stats_info(struct hdd_adapter *adapter)
+{
+}
+#endif
+
 /**
  * wlan_hdd_get_sta_stats() - get aggregate STA stats
  * @wiphy: wireless phy
@@ -6150,8 +6216,7 @@ static int wlan_hdd_get_sta_stats(struct wiphy *wiphy,
 
 	wlan_hdd_get_peer_rx_rate_stats(adapter);
 
-	adapter->rssi = adapter->hdd_stats.summary_stat.rssi;
-	snr = adapter->hdd_stats.summary_stat.snr;
+	wlan_hdd_mlo_update_stats_info(adapter);
 
 	/* for new connection there might be no valid previous RSSI */
 	if (!adapter->rssi) {