| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | /* |
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| 3 | * USB CDC Device Management userspace API definitions |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or |
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| 6 | * modify it under the terms of the GNU General Public License |
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| 7 | * version 2 as published by the Free Software Foundation. |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef _UAPI__LINUX_USB_CDC_WDM_H |
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| 11 | #define _UAPI__LINUX_USB_CDC_WDM_H |
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| 12 | |
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| 13 | #include <linux/types.h> |
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| 14 | |
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| 15 | /* |
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| 16 | * This IOCTL is used to retrieve the wMaxCommand for the device, |
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| 17 | * defining the message limit for both reading and writing. |
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| 18 | * |
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| 19 | * For CDC WDM functions this will be the wMaxCommand field of the |
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| 20 | * Device Management Functional Descriptor. |
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| 21 | */ |
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| 22 | #define IOCTL_WDM_MAX_COMMAND _IOR('H', 0xA0, __u16) |
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| 23 | |
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| 24 | #endif /* _UAPI__LINUX_USB_CDC_WDM_H */ |
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| 25 | |
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