qcacld-3.0: Use dynamic NSS while reporting stats

Presently in the driver, the NSS used for reporting stats to the upper
layer is fetched from the VDEV generic NSS. This NSS is not updated
dynamically with the set NSS command. As a result, in the case the
command is given, the NSS reported to the userspace is not proper.

To mitigate this, instead of fetching the generic NSS, fetch the dynamic
NSS from the mlme.

Change-Id: I9fdbc0625ebe8343a7bf750829db028f4ddd86d0
CRs-Fixed: 2551187

core/hdd/src/wlan_hdd_stats.c

@@ -5663,6 +5663,8 @@ int wlan_hdd_get_station_stats(struct hdd_adapter *adapter)
 {
 	int ret = 0;
 	struct stats_event *stats;
+	struct wlan_mlme_nss_chains *dynamic_cfg;
+	uint32_t tx_nss, rx_nss;
 
 	stats = wlan_cfg80211_mc_cp_stats_get_station_stats(adapter->vdev,
 							    &ret);
@@ -5709,11 +5711,29 @@ int wlan_hdd_get_station_stats(struct hdd_adapter *adapter)
 	adapter->hdd_stats.peer_stats.fcs_count =
 		stats->peer_adv_stats->fcs_count;
 
+	dynamic_cfg = mlme_get_dynamic_vdev_config(adapter->vdev);
+	if (!dynamic_cfg) {
+		hdd_err("nss chain dynamic config NULL");
+		return -EINVAL;
+	}
+
+	switch (hdd_conn_get_connected_band(&adapter->session.station)) {
+	case BAND_2G:
+		tx_nss = dynamic_cfg->tx_nss[NSS_CHAINS_BAND_2GHZ];
+		rx_nss = dynamic_cfg->rx_nss[NSS_CHAINS_BAND_2GHZ];
+		break;
+	case BAND_5G:
+		tx_nss = dynamic_cfg->tx_nss[NSS_CHAINS_BAND_5GHZ];
+		rx_nss = dynamic_cfg->rx_nss[NSS_CHAINS_BAND_5GHZ];
+		break;
+	default:
+		tx_nss = wlan_vdev_mlme_get_nss(adapter->vdev);
+		rx_nss = wlan_vdev_mlme_get_nss(adapter->vdev);
+	}
+
 	/* save class a stats to legacy location */
-	adapter->hdd_stats.class_a_stat.tx_nss =
-		wlan_vdev_mlme_get_nss(adapter->vdev);
-	adapter->hdd_stats.class_a_stat.rx_nss =
-		wlan_vdev_mlme_get_nss(adapter->vdev);
+	adapter->hdd_stats.class_a_stat.tx_nss = tx_nss;
+	adapter->hdd_stats.class_a_stat.rx_nss = rx_nss;
 	adapter->hdd_stats.class_a_stat.tx_rate = stats->tx_rate;
 	adapter->hdd_stats.class_a_stat.rx_rate = stats->rx_rate;
 	adapter->hdd_stats.class_a_stat.tx_rx_rate_flags = stats->tx_rate_flags;