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/*
* Based on vhost.h of QEMU project
*
* Copyright 2022-2023 Virtual Open Systems SAS.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef LOOPBACK_VHOST_H
#define LOOPBACK_VHOST_H
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#include <poll.h>
#include <pthread.h>
#include "vhost_user_loopback.h"
#include "virtio_loopback.h"
#define VHOST_INVALID_FEATURE_BIT (0xff)
#define VHOST_QUEUE_NUM_CONFIG_INR 0
int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev);
int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev, bool vrings);
void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev,
int n, bool mask);
int vhost_dev_get_config(struct vhost_dev *hdev, uint8_t *config,
uint32_t config_len);
int vhost_dev_set_config(struct vhost_dev *hdev, const uint8_t *data,
uint32_t offset, uint32_t size, uint32_t flags);
uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bits,
uint64_t features);
void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,
uint64_t features);
/**
* vhost_dev_set_config_notifier() - register VhostDevConfigOps
* @hdev: common vhost_dev_structure
* @ops: notifier ops
*
* If the device is expected to change configuration a notifier can be
* setup to handle the case.
*/
typedef struct VhostDevConfigOps VhostDevConfigOps;
void vhost_dev_set_config_notifier(struct vhost_dev *dev,
const VhostDevConfigOps *ops);
int vhost_dev_prepare_inflight(struct vhost_dev *hdev, VirtIODevice *vdev);
int vhost_dev_get_inflight(struct vhost_dev *dev, uint16_t queue_size,
struct vhost_inflight *inflight);
int vhost_dev_set_inflight(struct vhost_dev *dev,
struct vhost_inflight *inflight);
void update_mem_table(VirtIODevice *vdev);
struct vhost_inflight {
int fd;
void *addr;
uint64_t size;
uint64_t offset;
uint16_t queue_size;
};
#endif /* LOOPBACK_VHOST_H */
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