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Create a vhost-user-backend object that holds a connection to a vhost-user backend (or "slave" process) and can be referenced from virtio devices that support it. See later patches for input & gpu usage. Note: a previous iteration of this object made it user-creatable, and allowed managed sub-process spawning, but that has been dropped for now. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-id: 20190503130034.24916-4-marcandre.lureau@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/*
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* QEMU vhost-user backend
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*
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* Copyright (C) 2018 Red Hat Inc
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*
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* Authors:
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* Marc-André Lureau <marcandre.lureau@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_VHOST_USER_BACKEND_H
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#define QEMU_VHOST_USER_BACKEND_H
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#include "qom/object.h"
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#include "exec/memory.h"
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#include "qemu/option.h"
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#include "qemu/bitmap.h"
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#include "hw/virtio/vhost.h"
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#include "hw/virtio/vhost-user.h"
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#include "chardev/char-fe.h"
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#include "io/channel.h"
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#define TYPE_VHOST_USER_BACKEND "vhost-user-backend"
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#define VHOST_USER_BACKEND(obj) \
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OBJECT_CHECK(VhostUserBackend, (obj), TYPE_VHOST_USER_BACKEND)
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#define VHOST_USER_BACKEND_GET_CLASS(obj) \
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OBJECT_GET_CLASS(VhostUserBackendClass, (obj), TYPE_VHOST_USER_BACKEND)
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#define VHOST_USER_BACKEND_CLASS(klass) \
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OBJECT_CLASS_CHECK(VhostUserBackendClass, (klass), TYPE_VHOST_USER_BACKEND)
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typedef struct VhostUserBackend VhostUserBackend;
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typedef struct VhostUserBackendClass VhostUserBackendClass;
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struct VhostUserBackendClass {
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ObjectClass parent_class;
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};
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struct VhostUserBackend {
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/* private */
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Object parent;
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char *chr_name;
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CharBackend chr;
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VhostUserState vhost_user;
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struct vhost_dev dev;
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VirtIODevice *vdev;
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bool started;
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bool completed;
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};
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int vhost_user_backend_dev_init(VhostUserBackend *b, VirtIODevice *vdev,
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unsigned nvqs, Error **errp);
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void vhost_user_backend_start(VhostUserBackend *b);
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void vhost_user_backend_stop(VhostUserBackend *b);
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#endif
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