qcacld-3.0: Get Tx and Rx nss for vendor attribute

Get Tx nss for QCA_WLAN_VENDOR_ATTR_CONFIG_TX_NSS
vendor attribute. Get Rx nss for
QCA_WLAN_VENDOR_ATTR_CONFIG_RX_NSS vendor attribute.
These value will only be fetched if adapter is in
connected state.

Change-Id: I673d0a68fa0b9cb87736664d2058473fe0f5f7ed
CRs-Fixed: 2831427

core/hdd/inc/wlan_hdd_cfg.h

@@ -343,6 +343,33 @@ QDF_STATUS hdd_update_nss(struct hdd_adapter *adapter, uint8_t tx_nss,
  */
 QDF_STATUS hdd_get_nss(struct hdd_adapter *adapter, uint8_t *nss);
 
+/**
+ * hdd_get_tx_nss() - Get the number of spatial streams supported by the adapter
+ *
+ * @adapter: the pointer to adapter
+ * @tx_nss: the number Tx of spatial streams supported by the adapter
+ *
+ * This function is used to get the number of Tx spatial streams supported by
+ * the adapter.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS hdd_get_tx_nss(struct hdd_adapter *adapter, uint8_t *tx_nss);
+
+/**
+ * hdd_get_rx_nss() - Get the number of spatial streams supported by the adapter
+ *
+ * @adapter: the pointer to adapter
+ * @rx_nss: the number Rx of spatial streams supported by the adapter
+ *
+ * This function is used to get the number of Rx spatial streams supported by
+ * the adapter.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS hdd_get_rx_nss(struct hdd_adapter *adapter, uint8_t *rx_nss);
+
+
 /**
  * hdd_dfs_indicate_radar() - Block tx as radar found on the channel
  * @hdd_ctxt: HDD context pointer

core/hdd/src/wlan_hdd_cfg.c

@@ -49,6 +49,7 @@
 #include "cfg_ucfg_api.h"
 #include "hdd_dp_cfg.h"
 #include <wma_api.h>
+#include "wlan_hdd_object_manager.h"
 
 /**
  * get_next_line() - find and locate the new line pointer
@@ -1287,6 +1288,102 @@ QDF_STATUS hdd_get_nss(struct hdd_adapter *adapter, uint8_t *nss)
 	return status;
 }
 
+QDF_STATUS hdd_get_tx_nss(struct hdd_adapter *adapter, uint8_t *tx_nss)
+{
+	struct hdd_context *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
+	struct wlan_objmgr_vdev *vdev;
+	QDF_STATUS status = QDF_STATUS_SUCCESS;
+	struct wlan_mlme_nss_chains *dynamic_cfg;
+	enum band_info operating_band;
+	uint8_t proto_generic_nss;
+
+	vdev = hdd_objmgr_get_vdev(adapter);
+	if (!vdev)
+		return QDF_STATUS_E_INVAL;
+
+	proto_generic_nss = wlan_vdev_mlme_get_nss(vdev);
+	if (hdd_ctx->dynamic_nss_chains_support) {
+		dynamic_cfg = mlme_get_dynamic_vdev_config(vdev);
+		if (!dynamic_cfg) {
+			hdd_err("nss chain dynamic config NULL");
+			hdd_objmgr_put_vdev(vdev);
+			return QDF_STATUS_E_INVAL;
+		}
+		if (adapter->device_mode == QDF_SAP_MODE ||
+		    adapter->device_mode == QDF_P2P_GO_MODE) {
+			operating_band = hdd_get_sap_operating_band(
+						adapter->hdd_ctx);
+		} else {
+			operating_band = hdd_conn_get_connected_band(
+						&adapter->session.station);
+		}
+		switch (operating_band) {
+		case BAND_2G:
+			*tx_nss = dynamic_cfg->tx_nss[NSS_CHAINS_BAND_2GHZ];
+			break;
+		case BAND_5G:
+			*tx_nss = dynamic_cfg->tx_nss[NSS_CHAINS_BAND_5GHZ];
+			break;
+		default:
+			*tx_nss = proto_generic_nss;
+		}
+		if (*tx_nss > proto_generic_nss)
+			*tx_nss = proto_generic_nss;
+	} else
+		*tx_nss = proto_generic_nss;
+	hdd_objmgr_put_vdev(vdev);
+
+	return status;
+}
+
+QDF_STATUS hdd_get_rx_nss(struct hdd_adapter *adapter, uint8_t *rx_nss)
+{
+	struct hdd_context *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
+	struct wlan_objmgr_vdev *vdev;
+	QDF_STATUS status = QDF_STATUS_SUCCESS;
+	struct wlan_mlme_nss_chains *dynamic_cfg;
+	enum band_info operating_band;
+	uint8_t proto_generic_nss;
+
+	vdev = hdd_objmgr_get_vdev(adapter);
+	if (!vdev)
+		return QDF_STATUS_E_INVAL;
+
+	proto_generic_nss = wlan_vdev_mlme_get_nss(vdev);
+	if (hdd_ctx->dynamic_nss_chains_support) {
+		dynamic_cfg = mlme_get_dynamic_vdev_config(vdev);
+		if (!dynamic_cfg) {
+			hdd_err("nss chain dynamic config NULL");
+			hdd_objmgr_put_vdev(vdev);
+			return QDF_STATUS_E_INVAL;
+		}
+		if (adapter->device_mode == QDF_SAP_MODE ||
+		    adapter->device_mode == QDF_P2P_GO_MODE) {
+			operating_band = hdd_get_sap_operating_band(
+						adapter->hdd_ctx);
+		} else {
+			operating_band = hdd_conn_get_connected_band(
+						&adapter->session.station);
+		}
+		switch (operating_band) {
+		case BAND_2G:
+			*rx_nss = dynamic_cfg->rx_nss[NSS_CHAINS_BAND_2GHZ];
+			break;
+		case BAND_5G:
+			*rx_nss = dynamic_cfg->rx_nss[NSS_CHAINS_BAND_5GHZ];
+			break;
+		default:
+			*rx_nss = proto_generic_nss;
+		}
+		if (*rx_nss > proto_generic_nss)
+			*rx_nss = proto_generic_nss;
+	} else
+		*rx_nss = proto_generic_nss;
+	hdd_objmgr_put_vdev(vdev);
+
+	return status;
+}
+
 int hdd_vendor_mode_to_phymode(enum qca_wlan_vendor_phy_mode vendor_phy_mode,
 			       eCsrPhyMode *csr_phy_mode)
 {

core/hdd/src/wlan_hdd_cfg80211.c

@@ -9263,6 +9263,78 @@ static int hdd_get_nss_config(struct hdd_adapter *adapter,
 	return 0;
 }
 
+/**
+ * hdd_get_tx_nss_config() - Get the number of tx spatial streams supported by
+ * the adapter
+ * @adapter: Pointer to HDD adapter
+ * @skb: sk buffer to hold nl80211 attributes
+ * @attr: Pointer to struct nlattr
+ *
+ * Return: 0 on success; error number otherwise
+ */
+static int hdd_get_tx_nss_config(struct hdd_adapter *adapter,
+				 struct sk_buff *skb,
+				 const struct nlattr *attr)
+{
+	uint8_t tx_nss;
+	QDF_STATUS status;
+
+	if (!hdd_is_vdev_in_conn_state(adapter)) {
+		hdd_err("Not in connected state");
+		return -EINVAL;
+	}
+
+	status = hdd_get_tx_nss(adapter, &tx_nss);
+	if (!QDF_IS_STATUS_SUCCESS(status)) {
+		hdd_err("Failed to get nss");
+		return -EINVAL;
+	}
+
+	hdd_debug("tx_nss %d", tx_nss);
+	if (nla_put_u8(skb, QCA_WLAN_VENDOR_ATTR_CONFIG_TX_NSS, tx_nss)) {
+		hdd_err("nla_put failure");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * hdd_get_rx_nss_config() - Get the number of rx spatial streams supported by
+ * the adapter
+ * @adapter: Pointer to HDD adapter
+ * @skb: sk buffer to hold nl80211 attributes
+ * @attr: Pointer to struct nlattr
+ *
+ * Return: 0 on success; error number otherwise
+ */
+static int hdd_get_rx_nss_config(struct hdd_adapter *adapter,
+				 struct sk_buff *skb,
+				 const struct nlattr *attr)
+{
+	uint8_t rx_nss;
+	QDF_STATUS status;
+
+	if (!hdd_is_vdev_in_conn_state(adapter)) {
+		hdd_err("Not in connected state");
+		return -EINVAL;
+	}
+
+	status = hdd_get_rx_nss(adapter, &rx_nss);
+	if (!QDF_IS_STATUS_SUCCESS(status)) {
+		hdd_err("Failed to get nss");
+		return -EINVAL;
+	}
+
+	hdd_debug("rx_nss %d", rx_nss);
+	if (nla_put_u8(skb, QCA_WLAN_VENDOR_ATTR_CONFIG_RX_NSS, rx_nss)) {
+		hdd_err("nla_put failure");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 /**
  * hdd_get_optimized_power_config() - Get the number of spatial streams
  * supported by the adapter
@@ -9364,6 +9436,12 @@ static const struct config_getters config_getters[] = {
 	{QCA_WLAN_VENDOR_ATTR_CONFIG_OPTIMIZED_POWER_MANAGEMENT,
 	 sizeof(uint8_t),
 	 hdd_get_optimized_power_config},
+	 {QCA_WLAN_VENDOR_ATTR_CONFIG_TX_NSS,
+	 sizeof(uint8_t),
+	 hdd_get_tx_nss_config},
+	 {QCA_WLAN_VENDOR_ATTR_CONFIG_RX_NSS,
+	 sizeof(uint8_t),
+	 hdd_get_rx_nss_config},
 };
 
 /**