qcacld-3.0: Disable NAN in stop_adapter

Framework might not disable NAN discovery explicitly in some
cases like driver unload. So disable NAN from stop_adapter to
terminate NDPs and NAN discovery properly.
Cleanup the API os_if_process_nan_disable_req() by using the
new API ucfg_disable_nan_discovery().

Change-Id: Ic2c834db44c42a44db902c93f67a887de1b6c2fb
CRs-Fixed: 2594318

components/nan/dispatcher/inc/nan_ucfg_api.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020 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
@@ -368,6 +368,21 @@ bool ucfg_nan_is_sta_ndp_concurrency_allowed(struct wlan_objmgr_psoc *psoc,
  * Return: True if NAN vdev creation is allowed else false
  */
 bool ucfg_nan_is_vdev_creation_allowed(struct wlan_objmgr_psoc *psoc);
+
+/**
+ * ucfg_disable_nan_discovery() - Disable NAN discovery
+ * @psoc: pointer to psoc object
+ * @data: Data to be sent to NAN discovery engine, which runs in firmware
+ * @data_len: Length of the data
+ *
+ * Send NAN disable request to firmware by setting the mandatory
+ * params(disable_2g_discovery, disable_5g_discovery) along
+ * with the data, if provided.
+ *
+ * Return: status of operation
+ */
+QDF_STATUS ucfg_disable_nan_discovery(struct wlan_objmgr_psoc *psoc,
+				      uint8_t *data, uint32_t data_len);
 #else /* WLAN_FEATURE_NAN */
 
 static inline
@@ -425,5 +440,12 @@ bool ucfg_nan_is_vdev_creation_allowed(struct wlan_objmgr_psoc *psoc)
 {
 	return false;
 }
+
+static inline
+QDF_STATUS ucfg_disable_nan_discovery(struct wlan_objmgr_psoc *psoc,
+				      uint8_t *data, uint32_t data_len)
+{
+	return QDF_STATUS_SUCCESS;
+}
 #endif /* WLAN_FEATURE_NAN */
 #endif /* _NAN_UCFG_API_H_ */

components/nan/dispatcher/src/nan_ucfg_api.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020 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
@@ -1045,3 +1045,33 @@ bool ucfg_nan_is_vdev_creation_allowed(struct wlan_objmgr_psoc *psoc)
 
 	return psoc_nan_obj->nan_caps.nan_vdev_allowed;
 }
+
+QDF_STATUS ucfg_disable_nan_discovery(struct wlan_objmgr_psoc *psoc,
+				      uint8_t *data, uint32_t data_len)
+{
+	struct nan_disable_req *nan_req;
+	QDF_STATUS status;
+
+	nan_req = qdf_mem_malloc(sizeof(*nan_req) + data_len);
+	if (!nan_req)
+		return -ENOMEM;
+
+	nan_req->psoc = psoc;
+	nan_req->disable_2g_discovery = true;
+	nan_req->disable_5g_discovery = true;
+	if (data_len && data) {
+		nan_req->params.request_data_len = data_len;
+		qdf_mem_copy(nan_req->params.request_data, data, data_len);
+	}
+
+	nan_debug("sending NAN Disable Req");
+	status = ucfg_nan_discovery_req(nan_req, NAN_DISABLE_REQ);
+
+	if (QDF_IS_STATUS_SUCCESS(status))
+		nan_debug("Successfully sent NAN Disable request");
+	else
+		nan_err("Unable to send NAN Disable request: %u", status);
+
+	qdf_mem_free(nan_req);
+	return status;
+}