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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * USB CDC Device Management userspace API definitions4 *5 * This program is free software; you can redistribute it and/or6 * modify it under the terms of the GNU General Public License7 * version 2 as published by the Free Software Foundation.8 */9 10#ifndef _UAPI__LINUX_USB_CDC_WDM_H11#define _UAPI__LINUX_USB_CDC_WDM_H12 13#include <linux/types.h>14 15/*16 * This IOCTL is used to retrieve the wMaxCommand for the device,17 * defining the message limit for both reading and writing.18 *19 * For CDC WDM functions this will be the wMaxCommand field of the20 * Device Management Functional Descriptor.21 */22#define IOCTL_WDM_MAX_COMMAND _IOR('H', 0xA0, __u16)23 24#endif /* _UAPI__LINUX_USB_CDC_WDM_H */25