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/*-
* BSD LICENSE
*
* Copyright 2015 6WIND S.A.
* Copyright 2015 Mellanox.
*
* 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 6WIND S.A. 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.
*/
/* DPDK headers don't like -pedantic. */
#ifdef PEDANTIC
#pragma GCC diagnostic ignored "-pedantic"
#endif
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_interrupts.h>
#include <rte_alarm.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-pedantic"
#endif
#include "mlx5.h"
#include "mlx5_rxtx.h"
#include "mlx5_utils.h"
/**
* DPDK callback to start the device.
*
* Simulate device start by attaching all configured flows.
*
* @param dev
* Pointer to Ethernet device structure.
*
* @return
* 0 on success, negative errno value on failure.
*/
int
mlx5_dev_start(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
int err;
if (mlx5_is_secondary())
return -E_RTE_SECONDARY;
priv_lock(priv);
if (priv->started) {
priv_unlock(priv);
return 0;
}
DEBUG("%p: allocating and configuring hash RX queues", (void *)dev);
err = priv_create_hash_rxqs(priv);
if (!err)
err = priv_rehash_flows(priv);
if (!err)
priv->started = 1;
else {
ERROR("%p: an error occurred while configuring hash RX queues:"
" %s",
(void *)priv, strerror(err));
/* Rollback. */
priv_special_flow_disable_all(priv);
priv_mac_addrs_disable(priv);
priv_destroy_hash_rxqs(priv);
}
if (dev->data->dev_conf.fdir_conf.mode != RTE_FDIR_MODE_NONE)
priv_fdir_enable(priv);
priv_dev_interrupt_handler_install(priv, dev);
priv_unlock(priv);
return -err;
}
/**
* DPDK callback to stop the device.
*
* Simulate device stop by detaching all configured flows.
*
* @param dev
* Pointer to Ethernet device structure.
*/
void
mlx5_dev_stop(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
if (mlx5_is_secondary())
return;
priv_lock(priv);
if (!priv->started) {
priv_unlock(priv);
return;
}
DEBUG("%p: cleaning up and destroying hash RX queues", (void *)dev);
priv_special_flow_disable_all(priv);
priv_mac_addrs_disable(priv);
priv_destroy_hash_rxqs(priv);
priv_fdir_disable(priv);
priv_dev_interrupt_handler_uninstall(priv, dev);
priv->started = 0;
priv_unlock(priv);
}
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