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/*
* Generic vhost-user-device implementation for any vhost-user-backend
*
* This is a concrete implementation of vhost-user-base which can be
* configured via properties. It is useful for development and
* prototyping. It expects configuration details (if any) to be
* handled by the vhost-user daemon itself.
*
* Copyright (c) 2023 Linaro Ltd
* Author: Alex Bennée <alex.bennee@linaro.org>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/qdev-properties.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/virtio/vhost-user-base.h"
#include "qemu/error-report.h"
/*
* The following is a concrete implementation of the base class which
* allows the user to define the key parameters via the command line.
*/
static const VMStateDescription vud_vmstate = {
.name = "vhost-user-device",
.unmigratable = 1,
};
static Property vud_properties[] = {
DEFINE_PROP_CHR("chardev", VHostUserBase, chardev),
DEFINE_PROP_UINT16("virtio-id", VHostUserBase, virtio_id, 0),
DEFINE_PROP_UINT32("vq_size", VHostUserBase, vq_size, 64),
DEFINE_PROP_UINT32("num_vqs", VHostUserBase, num_vqs, 1),
DEFINE_PROP_UINT32("config_size", VHostUserBase, config_size, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void vud_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
/* Reason: stop inexperienced users confusing themselves */
dc->user_creatable = false;
device_class_set_props(dc, vud_properties);
dc->vmsd = &vud_vmstate;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static const TypeInfo vud_info = {
.name = TYPE_VHOST_USER_DEVICE,
.parent = TYPE_VHOST_USER_BASE,
.class_init = vud_class_init,
};
static void vu_register_types(void)
{
type_register_static(&vud_info);
}
type_init(vu_register_types)
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