include/uapi/linux/usb/cdc-wdm.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * USB CDC Device Management userspace API definitions
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * version 2 as published by the Free Software Foundation.
   8  */
   9
  10 #ifndef _UAPI__LINUX_USB_CDC_WDM_H
  11 #define _UAPI__LINUX_USB_CDC_WDM_H
  12
  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 the
  20  * Device Management Functional Descriptor.
  21  */
  22 #define IOCTL_WDM_MAX_COMMAND _IOR('H', 0xA0, __u16)
  23
  24 #endif /* _UAPI__LINUX_USB_CDC_WDM_H */