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/* SPDX-License-Identifier: GPL-2.0 */
/*
* mctp-usb.h - MCTP USB transport binding: common definitions,
* based on DMTF0283 specification:
* https://www.dmtf.org/sites/default/files/standards/documents/DSP0283_1.0.1.pdf
*
* These are protocol-level definitions, that may be shared between host
* and gadget drivers.
*
* Copyright (C) 2024-2025 Code Construct Pty Ltd
*/
#ifndef __LINUX_USB_MCTP_USB_H
#define __LINUX_USB_MCTP_USB_H
#include <linux/types.h>
struct mctp_usb_hdr {
__be16 id;
u8 rsvd;
u8 len;
} __packed;
#define MCTP_USB_XFER_SIZE 512
#define MCTP_USB_BTU 68
#define MCTP_USB_MTU_MIN MCTP_USB_BTU
#define MCTP_USB_MTU_MAX (U8_MAX - sizeof(struct mctp_usb_hdr))
#define MCTP_USB_DMTF_ID 0x1ab4
#endif /* __LINUX_USB_MCTP_USB_H */
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