u_ecm.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * u_ecm.h
 4 *
 5 * Utility definitions for the ecm function
 6 *
 7 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
 8 *		http://www.samsung.com
 9 *
10 * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
11 */
12
13#ifndef U_ECM_H
14#define U_ECM_H
15
16#include <linux/usb/composite.h>
17
18/**
19 * struct f_ecm_opts - ECM function options
20 * @func_inst: USB function instance.
21 * @net: The net_device associated with the ECM function.
22 * @bound: True if the net_device is shared and pre-registered during the
23 *         legacy composite driver's bind phase (e.g., multi.c). If false,
24 *         the ECM function will register the net_device during its own
25 *         bind phase.
26 * @bind_count: Tracks the number of configurations the ECM function is
27 *              bound to, preventing double-registration of the @net device.
28 * @lock: Protects the data from concurrent access by configfs read/write
29 *        and create symlink/remove symlink operations.
30 * @refcnt: Reference counter for the function instance.
31 */
32struct f_ecm_opts {
33	struct usb_function_instance	func_inst;
34	struct net_device		*net;
35	bool				bound;
36	int				bind_count;
37
38	struct mutex			lock;
39	int				refcnt;
40};
41
42#endif /* U_ECM_H */