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0b3d881a06
Add the basic implementation for receiving vfio-user messages from the control socket. Originally-by: John Johnson <john.g.johnson@oracle.com> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com> Signed-off-by: John Levon <john.levon@nutanix.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Link: https://lore.kernel.org/qemu-devel/20250625193012.2316242-4-john.levon@nutanix.com Signed-off-by: Cédric Le Goater <clg@redhat.com>
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
#ifndef VFIO_USER_PROTOCOL_H
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#define VFIO_USER_PROTOCOL_H
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/*
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* vfio protocol over a UNIX socket.
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*
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* Copyright © 2018, 2021 Oracle and/or its affiliates.
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*
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* Each message has a standard header that describes the command
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* being sent, which is almost always a VFIO ioctl().
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*
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* The header may be followed by command-specific data, such as the
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* region and offset info for read and write commands.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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typedef struct {
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uint16_t id;
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uint16_t command;
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uint32_t size;
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uint32_t flags;
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uint32_t error_reply;
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} VFIOUserHdr;
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/* VFIOUserHdr commands */
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enum vfio_user_command {
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VFIO_USER_VERSION = 1,
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VFIO_USER_DMA_MAP = 2,
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VFIO_USER_DMA_UNMAP = 3,
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VFIO_USER_DEVICE_GET_INFO = 4,
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VFIO_USER_DEVICE_GET_REGION_INFO = 5,
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VFIO_USER_DEVICE_GET_REGION_IO_FDS = 6,
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VFIO_USER_DEVICE_GET_IRQ_INFO = 7,
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VFIO_USER_DEVICE_SET_IRQS = 8,
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VFIO_USER_REGION_READ = 9,
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VFIO_USER_REGION_WRITE = 10,
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VFIO_USER_DMA_READ = 11,
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VFIO_USER_DMA_WRITE = 12,
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VFIO_USER_DEVICE_RESET = 13,
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VFIO_USER_DIRTY_PAGES = 14,
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VFIO_USER_MAX,
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};
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/* VFIOUserHdr flags */
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#define VFIO_USER_REQUEST 0x0
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#define VFIO_USER_REPLY 0x1
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#define VFIO_USER_TYPE 0xF
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#define VFIO_USER_NO_REPLY 0x10
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#define VFIO_USER_ERROR 0x20
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#endif /* VFIO_USER_PROTOCOL_H */
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