qcacld-3.0: Add API to get listen interval value from driver

Add API to get LI which is configured by the user.
In case, user has not configured any interval,
device uses default LI and this cmd will return 0
Syntax for cli cmd: driver GET_LISTEN_INTERVAL

Change-Id: I3ef12ffc757288c057c88dceece7dbc2da68880b
CRs-Fixed: 3425472

components/pmo/dispatcher/inc/wlan_pmo_ucfg_api.h

@@ -1099,6 +1099,18 @@ void ucfg_pmo_psoc_wakeup_host_event_received(struct wlan_objmgr_psoc *psoc);
 QDF_STATUS ucfg_pmo_config_listen_interval(struct wlan_objmgr_vdev *vdev,
 					   uint32_t listen_interval);
 
+/**
+ * ucfg_pmo_get_listen_interval() - function to get listen interval
+ * @vdev: objmgr vdev
+ * @listen_interval: pointer to store listen interval
+ *
+ * This function allows user to get listen interval dynamically
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS ucfg_pmo_get_listen_interval(struct wlan_objmgr_vdev *vdev,
+					uint32_t *listen_interval);
+
 /**
  * ucfg_pmo_config_modulated_dtim() - function to configure modulated dtim
  * @vdev: objmgr vdev handle

components/pmo/dispatcher/src/wlan_pmo_ucfg_api.c

@@ -563,6 +563,24 @@ QDF_STATUS ucfg_pmo_config_listen_interval(struct wlan_objmgr_vdev *vdev,
 	return pmo_core_config_listen_interval(vdev, listen_interval);
 }
 
+QDF_STATUS ucfg_pmo_get_listen_interval(struct wlan_objmgr_vdev *vdev,
+					uint32_t *listen_interval)
+{
+	struct pmo_vdev_priv_obj *vdev_ctx;
+
+	if (!vdev)
+		return QDF_STATUS_E_INVAL;
+
+	vdev_ctx = pmo_vdev_get_priv(vdev);
+	if (!vdev_ctx)
+		return QDF_STATUS_E_INVAL;
+
+	qdf_spin_lock_bh(&vdev_ctx->pmo_vdev_lock);
+	*listen_interval = vdev_ctx->dyn_listen_interval;
+	qdf_spin_unlock_bh(&vdev_ctx->pmo_vdev_lock);
+	return QDF_STATUS_SUCCESS;
+}
+
 QDF_STATUS ucfg_pmo_config_modulated_dtim(struct wlan_objmgr_vdev *vdev,
 					  uint32_t mod_dtim)
 {

core/hdd/src/wlan_hdd_cfg80211.c

@@ -11372,6 +11372,50 @@ static int hdd_get_rx_nss_config(struct hdd_adapter *adapter,
 	return 0;
 }
 
+/**
+ * hdd_get_listen_interval_config() - Get listen interval from driver
+ * @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_listen_interval_config(struct hdd_adapter *adapter,
+					  struct sk_buff *skb,
+					  const struct nlattr *attr)
+{
+	uint32_t listen_interval = 0;
+	QDF_STATUS status;
+	struct wlan_objmgr_vdev *vdev;
+
+	if (adapter->device_mode != QDF_STA_MODE &&
+	    adapter->device_mode != QDF_P2P_CLIENT_MODE) {
+		hdd_err("Device not in STA / P2P-CLI mode");
+		return -EINVAL;
+	}
+	vdev = hdd_objmgr_get_vdev_by_user(adapter, WLAN_OSIF_ID);
+	if (!vdev) {
+		hdd_err("Failed to get vdev");
+		return -EINVAL;
+	}
+
+	status = ucfg_pmo_get_listen_interval(vdev, &listen_interval);
+	hdd_objmgr_put_vdev_by_user(vdev, WLAN_OSIF_ID);
+	if (status != QDF_STATUS_SUCCESS) {
+		hdd_err("vdev/vdev ctx NULL for getting listen interval");
+		return -EINVAL;
+	}
+
+	hdd_debug("listen interval %d", listen_interval);
+	if (nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_CONFIG_LISTEN_INTERVAL,
+			listen_interval)) {
+		hdd_err("nla_put failure");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 /**
  * hdd_get_optimized_power_config() - Get the number of spatial streams
  * supported by the adapter
@@ -11480,6 +11524,9 @@ static const struct config_getters config_getters[] = {
 	 {QCA_WLAN_VENDOR_ATTR_CONFIG_RX_NSS,
 	 sizeof(uint8_t),
 	 hdd_get_rx_nss_config},
+	 {QCA_WLAN_VENDOR_ATTR_CONFIG_LISTEN_INTERVAL,
+	 sizeof(uint32_t),
+	 hdd_get_listen_interval_config},
 };
 
 /**