feat(ble_mesh): Bluetooth Mesh folder and file misc updates

components/bt/esp_ble_mesh/common/include/mesh/common.h

@@ -0,0 +1,74 @@
+/*
+ * SPDX-FileCopyrightText: 2017-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/** @file
+ *  @brief Bluetooth Mesh Model Common APIs.
+ */
+
+#ifndef _BLE_MESH_COMMON_H_
+#define _BLE_MESH_COMMON_H_
+
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "esp_attr.h"
+#include "esp_heap_caps.h"
+
+#include "mesh/byteorder.h"
+#include "mesh/ffs.h"
+#include "mesh/trace.h"
+#include "mesh/mutex.h"
+#include "mesh/access.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void *bt_mesh_malloc(size_t size);
+
+void *bt_mesh_calloc(size_t size);
+
+void bt_mesh_free(void *ptr);
+
+/**
+ * @brief This function allocates memory to store outgoing message.
+ *
+ * @param[in] size: Length of memory allocated to store message value
+ *
+ * @return NULL-fail, pointer of a net_buf_simple structure-success
+ */
+struct net_buf_simple *bt_mesh_alloc_buf(uint16_t size);
+
+/**
+ * @brief This function releases the memory allocated for the outgoing message.
+ *
+ * @param[in] buf: Pointer to the net_buf_simple structure to be freed
+ *
+ * @return none
+ */
+void bt_mesh_free_buf(struct net_buf_simple *buf);
+
+/**
+ * @brief This function gets device role for stack internal use.
+ *
+ * @Note  Currently Provisioner only support client models, Node supports
+ *        client models and server models. Hence if srv_send is set to be
+ *        TRUE, then role NODE will be returned.
+ *
+ * @param[in] model:    Pointer to the model structure
+ * @param[in] srv_send: Indicate if the message is sent by a server model
+ *
+ * @return 0 - Node, 1 - Provisioner
+ */
+uint8_t bt_mesh_get_device_role(struct bt_mesh_model *model, bool srv_send);
+
+int bt_mesh_rand(void *buf, size_t len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BLE_MESH_COMMON_H_ */