/*-
 *   BSD LICENSE
 *
 *   Copyright (c) Intel Corporation.
 *   All rights reserved.
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 *   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.
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 *       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
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 */

#ifndef SPDK_VHOST_INTERNAL_H
#define SPDK_VHOST_INTERNAL_H

#include "spdk/stdinc.h"

#include <rte_vhost.h>

#include "spdk_internal/log.h"
#include "spdk/event.h"

#define SPDK_CACHE_LINE_SIZE RTE_CACHE_LINE_SIZE

#define MAX_VHOST_VRINGS	256

struct spdk_vhost_dev {
	struct rte_vhost_memory *mem;
	char *name;

	int vid;
	int task_cnt;
	int32_t lcore;
	uint64_t cpumask;

	uint16_t num_queues;
	uint64_t negotiated_features;
	struct rte_vhost_vring virtqueue[MAX_VHOST_VRINGS] __attribute((aligned(SPDK_CACHE_LINE_SIZE)));
};


struct spdk_vhost_dev_backend {
	uint64_t virtio_features;
	uint64_t disabled_features;
	const struct vhost_device_ops ops;
};

uint32_t spdk_vhost_allocate_reactor(uint64_t cpumask);
void spdk_vhost_free_reactor(uint32_t lcore);

struct spdk_vhost_dev *spdk_vhost_dev_find_by_vid(int vid);
int spdk_vhost_dev_construct(struct spdk_vhost_dev *dev);
int spdk_vhost_dev_register(struct spdk_vhost_dev *dev,
			    const struct spdk_vhost_dev_backend *backend);
int spdk_vhost_dev_unregister(struct spdk_vhost_dev *vdev);
void spdk_vhost_dev_destruct(struct spdk_vhost_dev *dev);

#endif /* SPDK_VHOST_INTERNAL_H */