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virtio: split into vhost-user-base and vhost-user-device

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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>
This commit is contained in:
Alex Bennée 2024-01-04 21:09:35 +00:00 • committed by Michael S. Tsirkin
parent df50424b4d
commit 6275989647
6 changed files with 383 additions and 342 deletions
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49
include/hw/virtio/vhost-user-base.h Normal file
View file

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/*
* Vhost-user generic virtio device
*
* Copyright (c) 2023 Linaro Ltd
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef QEMU_VHOST_USER_BASE_H
#define QEMU_VHOST_USER_BASE_H
#include "hw/virtio/vhost.h"
#include "hw/virtio/vhost-user.h"
#define TYPE_VHOST_USER_BASE "vhost-user-base"
OBJECT_DECLARE_TYPE(VHostUserBase, VHostUserBaseClass, VHOST_USER_BASE)
struct VHostUserBase {
VirtIODevice parent_obj;
/* Properties */
CharBackend chardev;
uint16_t virtio_id;
uint32_t num_vqs;
uint32_t vq_size; /* can't exceed VIRTIO_QUEUE_MAX */
uint32_t config_size;
/* State tracking */
VhostUserState vhost_user;
struct vhost_virtqueue *vhost_vq;
struct vhost_dev vhost_dev;
GPtrArray *vqs;
bool connected;
};
/*
* Needed so we can use the base realize after specialisation
* tweaks
*/
struct VHostUserBaseClass {
VirtioDeviceClass parent_class;
DeviceRealize parent_realize;
};
#define TYPE_VHOST_USER_DEVICE "vhost-user-device"
#endif /* QEMU_VHOST_USER_BASE_H */