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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _VIRTIO_USER_DEV_H
#define _VIRTIO_USER_DEV_H
#include <limits.h>
#include "../virtio_pci.h"
#include "../virtio_ring.h"
#include "vhost.h"
struct virtio_user_dev {
/* for vhost_user backend */
int vhostfd;
/* for vhost_kernel backend */
char *ifname;
int *vhostfds;
int *tapfds;
/* for both vhost_user and vhost_kernel */
int callfds[VIRTIO_MAX_VIRTQUEUES * 2 + 1];
int kickfds[VIRTIO_MAX_VIRTQUEUES * 2 + 1];
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 */
uint8_t status;
uint8_t mac_addr[ETHER_ADDR_LEN];
char path[PATH_MAX];
struct vring vrings[VIRTIO_MAX_VIRTQUEUES * 2 + 1];
struct virtio_user_backend_ops *ops;
};
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);
void virtio_user_dev_uninit(struct virtio_user_dev *dev);
void virtio_user_handle_cq(struct virtio_user_dev *dev, uint16_t queue_idx);
#endif
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