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usb: Add base USB MCTP definitions

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Upcoming changes will add a USB host (and later gadget) driver for the
MCTP-over-USB protocol. Add a header that provides common definitions
for protocol support: the packet header format and a few framing
definitions. Add a define for the MCTP class code, as per
https://usb.org/defined-class-codes.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20250221-dev-mctp-usb-v3-1-3353030fe9cc@codeconstruct.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jeremy Kerr
2025-02-21 08:56:57 +08:00
committed by Jakub Kicinski
parent e6a532185d
commit dcc35baae7
3 changed files with 32 additions and 0 deletions
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1
include/uapi/linux/usb/ch9.h
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@@ -330,6 +330,7 @@ struct usb_device_descriptor {
#define USB_CLASS_AUDIO_VIDEO 0x10
#define USB_CLASS_BILLBOARD 0x11
#define USB_CLASS_USB_TYPE_C_BRIDGE 0x12
#define USB_CLASS_MCTP 0x14
#define USB_CLASS_MISC 0xef
#define USB_CLASS_APP_SPEC 0xfe
#define USB_SUBCLASS_DFU 0x01