25 lines
739 B
C
25 lines
739 B
C
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* USB CDC Device Management userspace API definitions
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*/
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#ifndef __LINUX_USB_CDC_WDM_H
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#define __LINUX_USB_CDC_WDM_H
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#include <linux/types.h>
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/*
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* This IOCTL is used to retrieve the wMaxCommand for the device,
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* defining the message limit for both reading and writing.
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*
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* For CDC WDM functions this will be the wMaxCommand field of the
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* Device Management Functional Descriptor.
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*/
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#define IOCTL_WDM_MAX_COMMAND _IOR('H', 0xA0, __u16)
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#endif /* __LINUX_USB_CDC_WDM_H */
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