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/*-
* BSD LICENSE
*
* Copyright(c) 2016 IGEL Co., Ltd.
* 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 IGEL Co., Ltd. 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 _RTE_ETH_VHOST_H_
#define _RTE_ETH_VHOST_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include <stdbool.h>
#include <rte_virtio_net.h>
/**
* Disable features in feature_mask.
*
* @param feature_mask
* Vhost features defined in "linux/virtio_net.h".
* @return
* - On success, zero.
* - On failure, a negative value.
*/
int rte_eth_vhost_feature_disable(uint64_t feature_mask);
/**
* Enable features in feature_mask.
*
* @param feature_mask
* Vhost features defined in "linux/virtio_net.h".
* @return
* - On success, zero.
* - On failure, a negative value.
*/
int rte_eth_vhost_feature_enable(uint64_t feature_mask);
/**
* Returns currently supported vhost features.
*
* @return
* Vhost features defined in "linux/virtio_net.h".
*/
uint64_t rte_eth_vhost_feature_get(void);
/*
* Event description.
*/
struct rte_eth_vhost_queue_event {
uint16_t queue_id;
bool rx;
bool enable;
};
/**
* Get queue events from specified port.
* If a callback for below event is registered by
* rte_eth_dev_callback_register(), this function will describe what was
* changed.
* - RTE_ETH_EVENT_QUEUE_STATE
* Multiple events may cause only one callback kicking, so call this function
* while returning 0.
*
* @param port_id
* Port id.
* @param event
* Pointer to a rte_eth_vhost_queue_event structure.
* @return
* - On success, zero.
* - On failure, a negative value.
*/
int rte_eth_vhost_get_queue_event(uint8_t port_id,
struct rte_eth_vhost_queue_event *event);
#ifdef __cplusplus
}
#endif
#endif
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