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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2016 Intel Corporation
*/
#ifndef _VIRTIO_USER_DEV_H
#define _VIRTIO_USER_DEV_H
#include <limits.h>
#include <stdbool.h>
#include "../virtio_pci.h"
#include "../virtio_ring.h"
#include "vhost.h"
struct virtio_user_dev {
/* for vhost_user backend */
int vhostfd;
int listenfd; /* listening fd */
bool is_server; /* server or client mode */
/* for vhost_kernel backend */
char *ifname;
int *vhostfds;
int *tapfds;
/* for both vhost_user and vhost_kernel */
int callfds[VIRTIO_MAX_VIRTQUEUES];
int kickfds[VIRTIO_MAX_VIRTQUEUES];
int mac_specified;
uint32_t max_queue_pairs;
uint32_t queue_pairs;
uint32_t queue_size;
uint64_t features; /* the negotiated features with driver,
* and will be sync with device
*/
uint64_t device_features; /* supported features by device */
uint64_t frontend_features; /* enabled frontend features */
uint64_t unsupported_features; /* unsupported features mask */
uint8_t status;
uint16_t port_id;
uint8_t mac_addr[ETHER_ADDR_LEN];
char path[PATH_MAX];
struct vring vrings[VIRTIO_MAX_VIRTQUEUES];
struct virtio_user_backend_ops *ops;
pthread_mutex_t mutex;
bool started;
};
int is_vhost_user_by_type(const char *path);
int virtio_user_start_device(struct virtio_user_dev *dev);
int virtio_user_stop_device(struct virtio_user_dev *dev);
int virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues,
int cq, int queue_size, const char *mac, char **ifname,
int server, int mrg_rxbuf, int in_order);
void virtio_user_dev_uninit(struct virtio_user_dev *dev);
void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx);
uint8_t virtio_user_handle_mq(struct virtio_user_dev *dev, uint16_t q_pairs);
#endif
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