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

   1 /*
   2  * USB CDC Device Management userspace API definitions
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * version 2 as published by the Free Software Foundation.
   7  */
   8
   9 #ifndef _UAPI__LINUX_USB_CDC_WDM_H
  10 #define _UAPI__LINUX_USB_CDC_WDM_H
  11
  12 #include <linux/types.h>
  13
  14 /*
  15  * This IOCTL is used to retrieve the wMaxCommand for the device,
  16  * defining the message limit for both reading and writing.
  17  *
  18  * For CDC WDM functions this will be the wMaxCommand field of the
  19  * Device Management Functional Descriptor.
  20  */
  21 #define IOCTL_WDM_MAX_COMMAND _IOR('H', 0xA0, __u16)
  22
  23 #endif /* _UAPI__LINUX_USB_CDC_WDM_H */