rte_virtio_net.h

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/*-
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#ifndef _VIRTIO_NET_H_
#define _VIRTIO_NET_H_

#include <stdint.h>
#include <linux/vhost.h>
#include <linux/virtio_ring.h>
#include <linux/virtio_net.h>
#include <sys/eventfd.h>
#include <sys/socket.h>
#include <linux/if.h>

#include <rte_memory.h>
#include <rte_mempool.h>
#include <rte_ether.h>

#define RTE_VHOST_USER_CLIENT       (1ULL << 0)
#define RTE_VHOST_USER_NO_RECONNECT (1ULL << 1)
#define RTE_VHOST_USER_DEQUEUE_ZERO_COPY    (1ULL << 2)

/* Enum for virtqueue management. */
enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM};

struct virtio_net_device_ops {
    int (*new_device)(int vid);     
    void (*destroy_device)(int vid);    
    int (*vring_state_changed)(int vid, uint16_t queue_id, int enable); 
    void *reserved[5]; 
};

int rte_vhost_feature_disable(uint64_t feature_mask);

int rte_vhost_feature_enable(uint64_t feature_mask);

/* Returns currently supported vhost features */
uint64_t rte_vhost_feature_get(void);

int rte_vhost_enable_guest_notification(int vid, uint16_t queue_id, int enable);

int rte_vhost_driver_register(const char *path, uint64_t flags);

/* Unregister vhost driver. This is only meaningful to vhost user. */
int rte_vhost_driver_unregister(const char *path);

/* Register callbacks. */
int rte_vhost_driver_callback_register(struct virtio_net_device_ops const * const);
/* Start vhost driver session blocking loop. */
int rte_vhost_driver_session_start(void);

int rte_vhost_get_numa_node(int vid);

uint32_t rte_vhost_get_queue_num(int vid);

int rte_vhost_get_ifname(int vid, char *buf, size_t len);

uint16_t rte_vhost_avail_entries(int vid, uint16_t queue_id);

uint16_t rte_vhost_enqueue_burst(int vid, uint16_t queue_id,
    struct rte_mbuf **pkts, uint16_t count);

uint16_t rte_vhost_dequeue_burst(int vid, uint16_t queue_id,
    struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count);

#endif /* _VIRTIO_NET_H_ */