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/* SPDX-License-Identifier: GPL-2.0 */
/*
* u_rndis.h
*
* Utility definitions for the subset function
*
* Copyright (c) 2013 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
*/
#ifndef U_RNDIS_H
#define U_RNDIS_H
#include <linux/usb/composite.h>
/**
* struct f_rndis_opts - RNDIS function options
* @func_inst: USB function instance.
* @vendor_id: Vendor ID.
* @manufacturer: Manufacturer string.
* @net: The net_device associated with the RNDIS function.
* @bind_count: Tracks the number of configurations the RNDIS function is
* bound to, preventing double-registration of the @net device.
* @borrowed_net: True if the net_device is shared and pre-registered during
* the legacy composite driver's bind phase (e.g., multi.c).
* If false, the RNDIS function will register the net_device
* during its own bind phase.
* @rndis_interf_group: ConfigFS group for RNDIS interface.
* @rndis_os_desc: USB OS descriptor for RNDIS.
* @rndis_ext_compat_id: Extended compatibility ID.
* @class: USB class.
* @subclass: USB subclass.
* @protocol: USB protocol.
* @lock: Protects the data from concurrent access by configfs read/write
* and create symlink/remove symlink operations.
* @refcnt: Reference counter for the function instance.
*/
struct f_rndis_opts {
struct usb_function_instance func_inst;
u32 vendor_id;
const char *manufacturer;
struct net_device *net;
int bind_count;
bool borrowed_net;
struct config_group *rndis_interf_group;
struct usb_os_desc rndis_os_desc;
char rndis_ext_compat_id[16];
u8 class;
u8 subclass;
u8 protocol;
struct mutex lock;
int refcnt;
};
void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net);
#endif /* U_RNDIS_H */
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