qcacld-3.0: Create an iface for NAN discovery in driver init

Currently, framework issues NAN commands on station interface.
But when connection happens, framework does interface down and
up on the station interface due to MAC randomization. This
terminates all of the NAN operations.
So NAN discovery needs a separate interface to avoid dependency
on the station interface. Create an interface "wifi-aware0"
of type NL80211_IFTYPE_NAN based on the firmware capability
and register to kernel.
Framework issues "IF UP" on the new NAN discovery interface when
it enables NAN. Driver shall create vdev and send VDEV_CREATE
command to firmware for the same. Framework shall issue all
NAN discovery commands on this new interface. Driver shall use
NAN vdev for these NAN operations.
Framework shall do "IF DOWN" once the NAN operations
are done(Ex: up on NAN disable).

Change-Id: Ifd1e1ab5ed64cd97edb00e793214edd2a2365274
CRs-Fixed: 2592020

components/mlme/core/src/wlan_mlme_vdev_mgr_interface.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2018-2020 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -1242,6 +1242,9 @@ static QDF_STATUS mlme_get_vdev_types(enum QDF_OPMODE mode, uint8_t *type,
 	case QDF_NDI_MODE:
 		*type = WLAN_VDEV_MLME_TYPE_NDI;
 		break;
+	case QDF_NAN_DISC_MODE:
+		*type = WLAN_VDEV_MLME_TYPE_NAN;
+		break;
 	default:
 		mlme_err("Invalid device mode %d", mode);
 		status = QDF_STATUS_E_INVAL;

core/hdd/src/wlan_hdd_main.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2020 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -1081,9 +1081,56 @@ enum phy_ch_width hdd_map_nl_chan_width(enum nl80211_chan_width ch_width)
 	}
 }
 
+#if defined(WLAN_FEATURE_NAN) && \
+	   (KERNEL_VERSION(4, 19, 0) <= LINUX_VERSION_CODE)
+/**
+ * wlan_hdd_convert_nan_type() - Convert nl type to qdf type
+ * @nl_type: NL80211 interface type
+ * @out_qdf_type: QDF type for the given nl_type
+ *
+ * Convert nl type to QDF type
+ *
+ * Return: QDF_STATUS_SUCCESS if converted, failure otherwise.
+ */
+static QDF_STATUS wlan_hdd_convert_nan_type(enum nl80211_iftype nl_type,
+					    enum QDF_OPMODE *out_qdf_type)
+{
+	if (nl_type == NL80211_IFTYPE_NAN) {
+		*out_qdf_type = QDF_NAN_DISC_MODE;
+		return QDF_STATUS_SUCCESS;
+	}
+	return QDF_STATUS_E_INVAL;
+}
+
+/**
+ * wlan_hdd_set_nan_if_type() - Set the NAN iftype
+ * @adapter: pointer to HDD adapter
+ *
+ * Set the NL80211_IFTYPE_NAN to wdev iftype.
+ *
+ * Return: None
+ */
+static void wlan_hdd_set_nan_if_type(struct hdd_adapter *adapter)
+{
+	adapter->wdev.iftype = NL80211_IFTYPE_NAN;
+}
+#else
+static QDF_STATUS wlan_hdd_convert_nan_type(enum nl80211_iftype nl_type,
+					    enum QDF_OPMODE *out_qdf_type)
+{
+	return QDF_STATUS_E_INVAL;
+}
+
+static void wlan_hdd_set_nan_if_type(struct hdd_adapter *adapter)
+{
+}
+#endif
+
 QDF_STATUS hdd_nl_to_qdf_iface_type(enum nl80211_iftype nl_type,
 				    enum QDF_OPMODE *out_qdf_type)
 {
+	QDF_STATUS status = QDF_STATUS_SUCCESS;
+
 	switch (nl_type) {
 	case NL80211_IFTYPE_ADHOC:
 		*out_qdf_type = QDF_IBSS_MODE;
@@ -1113,6 +1160,9 @@ QDF_STATUS hdd_nl_to_qdf_iface_type(enum nl80211_iftype nl_type,
 		*out_qdf_type = QDF_WDS_MODE;
 		break;
 	default:
+		status = wlan_hdd_convert_nan_type(nl_type, out_qdf_type);
+		if (QDF_IS_STATUS_SUCCESS(status))
+			break;
 		hdd_err("Invalid nl80211 interface type %d", nl_type);
 		return QDF_STATUS_E_INVAL;
 	}
@@ -2584,6 +2634,7 @@ int hdd_start_adapter(struct hdd_adapter *adapter)
 	case QDF_OCB_MODE:
 	case QDF_STA_MODE:
 	case QDF_MONITOR_MODE:
+	case QDF_NAN_DISC_MODE:
 		ret = hdd_start_station_adapter(adapter);
 		if (ret)
 			goto err_start_adapter;
@@ -4844,6 +4895,7 @@ void hdd_deinit_adapter(struct hdd_context *hdd_ctx,
 	case QDF_P2P_DEVICE_MODE:
 	case QDF_IBSS_MODE:
 	case QDF_NDI_MODE:
+	case QDF_NAN_DISC_MODE:
 	{
 		hdd_deinit_station_mode(hdd_ctx, adapter, rtnl_held);
 		break;
@@ -5482,6 +5534,7 @@ struct hdd_adapter *hdd_open_adapter(struct hdd_context *hdd_ctx, uint8_t sessio
 	case QDF_OCB_MODE:
 	case QDF_NDI_MODE:
 	case QDF_MONITOR_MODE:
+	case QDF_NAN_DISC_MODE:
 		adapter = hdd_alloc_station_adapter(hdd_ctx, mac_addr,
 						    name_assign_type,
 						    iface_name);
@@ -5500,6 +5553,8 @@ struct hdd_adapter *hdd_open_adapter(struct hdd_context *hdd_ctx, uint8_t sessio
 			adapter->wdev.iftype = NL80211_IFTYPE_P2P_DEVICE;
 		else if (QDF_MONITOR_MODE == session_type)
 			adapter->wdev.iftype = NL80211_IFTYPE_MONITOR;
+		else if (QDF_NAN_DISC_MODE == session_type)
+			wlan_hdd_set_nan_if_type(adapter);
 		else
 			adapter->wdev.iftype = NL80211_IFTYPE_STATION;
 
@@ -5839,6 +5894,7 @@ QDF_STATUS hdd_stop_adapter(struct hdd_context *hdd_ctx,
 	case QDF_IBSS_MODE:
 	case QDF_P2P_DEVICE_MODE:
 	case QDF_NDI_MODE:
+	case QDF_NAN_DISC_MODE:
 		sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(adapter);
 
 		if (adapter->device_mode == QDF_NDI_MODE ||
@@ -6935,6 +6991,7 @@ QDF_STATUS hdd_start_all_adapters(struct hdd_context *hdd_ctx)
 		case QDF_STA_MODE:
 		case QDF_P2P_CLIENT_MODE:
 		case QDF_P2P_DEVICE_MODE:
+		case QDF_NAN_DISC_MODE:
 
 			conn_state = (WLAN_HDD_GET_STATION_CTX_PTR(adapter))
 					->conn_info.conn_state;
@@ -12629,6 +12686,13 @@ hdd_open_adapters_for_mission_mode(struct hdd_context *hdd_ctx)
 	if (status)
 		goto err_close_adapters;
 
+	if (ucfg_nan_is_vdev_creation_allowed(hdd_ctx->psoc)) {
+		mac_addr = wlan_hdd_get_intf_addr(hdd_ctx, QDF_NAN_DISC_MODE);
+		status = hdd_open_adapter_no_trans(hdd_ctx, QDF_NAN_DISC_MODE,
+						   "wifi-aware%d", mac_addr);
+		if (status)
+			goto err_close_adapters;
+	}
 	/* Open 802.11p Interface */
 	if (dot11p_mode == CFG_11P_CONCURRENT) {
 		status = hdd_open_ocb_interface(hdd_ctx);