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