rte_virtio_net.h File Reference

#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>

Go to the source code of this file.

Data Structures
struct	buf_vector
struct	vhost_virtqueue
struct	virtio_net
struct	virtio_memory_regions
struct	virtio_memory
struct	virtio_net_device_ops

Functions
static uint64_t	gpa_to_vva (struct virtio_net *dev, uint64_t guest_pa)
int	rte_vhost_feature_disable (uint64_t feature_mask)
int	rte_vhost_feature_enable (uint64_t feature_mask)
uint16_t	rte_vhost_enqueue_burst (struct virtio_net *dev, uint16_t queue_id, struct rte_mbuf **pkts, uint16_t count)
uint16_t	rte_vhost_dequeue_burst (struct virtio_net *dev, uint16_t queue_id, struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count)

Detailed Description

Interface to vhost net

Definition in file rte_virtio_net.h.

Function Documentation

static uint64_t gpa_to_vva ( struct virtio_net *  dev, uint64_t  guest_pa  )

inlinestatic

Function to convert guest physical addresses to vhost virtual addresses. This is used to convert guest virtio buffer addresses.

Examples:

vhost/main.c, and vhost_xen/main.c.

Definition at line 203 of file rte_virtio_net.h.

int rte_vhost_feature_disable

(

uint64_t

feature_mask

)

Disable features in feature_mask. Returns 0 on success.

Examples:

tep_termination/main.c, and vhost/main.c.

int rte_vhost_feature_enable

(

uint64_t

feature_mask

)

Enable features in feature_mask. Returns 0 on success.

Examples:

vhost/main.c.

uint16_t rte_vhost_enqueue_burst	(	struct virtio_net *	dev,
		uint16_t	queue_id,
		struct rte_mbuf **	pkts,
		uint16_t	count
	)

This function adds buffers to the virtio devices RX virtqueue. Buffers can be received from the physical port or from another virtual device. A packet count is returned to indicate the number of packets that were succesfully added to the RX queue.

Parameters

dev	virtio-net device
queue_id	virtio queue index in mq case
pkts	array to contain packets to be enqueued
count	packets num to be enqueued

Returns

num of packets enqueued

Examples:

tep_termination/vxlan_setup.c, and vhost/main.c.

uint16_t rte_vhost_dequeue_burst	(	struct virtio_net *	dev,
		uint16_t	queue_id,
		struct rte_mempool *	mbuf_pool,
		struct rte_mbuf **	pkts,
		uint16_t	count
	)

This function gets guest buffers from the virtio device TX virtqueue, construct host mbufs, copies guest buffer content to host mbufs and store them in pkts to be processed.

Parameters

dev	virtio-net device
queue_id	virtio queue index in mq case
mbuf_pool	mbuf_pool where host mbuf is allocated.
pkts	array to contain packets to be dequeued
count	packets num to be dequeued

Returns

num of packets dequeued

Examples:

tep_termination/main.c, and vhost/main.c.