6275989647
Lets keep a cleaner split between the base class and the derived vhost-user-device which we can use for generic vhost-user stubs. This includes an update to introduce the vq_size property so the number of entries in a virtq can be defined. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240104210945.1223134-2-alex.bennee@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*
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* Generic vhost-user-device implementation for any vhost-user-backend
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*
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* This is a concrete implementation of vhost-user-base which can be
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* configured via properties. It is useful for development and
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* prototyping. It expects configuration details (if any) to be
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* handled by the vhost-user daemon itself.
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*
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* Copyright (c) 2023 Linaro Ltd
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* Author: Alex Bennée <alex.bennee@linaro.org>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/qdev-properties.h"
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#include "hw/virtio/virtio-bus.h"
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#include "hw/virtio/vhost-user-base.h"
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#include "qemu/error-report.h"
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/*
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* The following is a concrete implementation of the base class which
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* allows the user to define the key parameters via the command line.
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*/
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static const VMStateDescription vud_vmstate = {
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.name = "vhost-user-device",
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.unmigratable = 1,
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};
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static Property vud_properties[] = {
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DEFINE_PROP_CHR("chardev", VHostUserBase, chardev),
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DEFINE_PROP_UINT16("virtio-id", VHostUserBase, virtio_id, 0),
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DEFINE_PROP_UINT32("vq_size", VHostUserBase, vq_size, 64),
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DEFINE_PROP_UINT32("num_vqs", VHostUserBase, num_vqs, 1),
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DEFINE_PROP_UINT32("config_size", VHostUserBase, config_size, 0),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void vud_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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/* Reason: stop inexperienced users confusing themselves */
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dc->user_creatable = false;
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device_class_set_props(dc, vud_properties);
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dc->vmsd = &vud_vmstate;
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set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
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}
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static const TypeInfo vud_info = {
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.name = TYPE_VHOST_USER_DEVICE,
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.parent = TYPE_VHOST_USER_BASE,
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.class_init = vud_class_init,
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};
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static void vu_register_types(void)
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{
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type_register_static(&vud_info);
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}
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type_init(vu_register_types)
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