3c7d44af25
Implement rxq interrupt callbacks Signed-off-by: Shahaf Shuler <shahafs@mellanox.com> Acked-by: Yongseok Koh <yskoh@mellanox.com>
150 lines
4.2 KiB
C
150 lines
4.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright 2015 6WIND S.A.
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* Copyright 2015 Mellanox.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of 6WIND S.A. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* DPDK headers don't like -pedantic. */
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#ifdef PEDANTIC
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#pragma GCC diagnostic ignored "-Wpedantic"
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#endif
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#include <rte_ether.h>
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#include <rte_ethdev.h>
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#include <rte_interrupts.h>
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#include <rte_alarm.h>
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#ifdef PEDANTIC
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#pragma GCC diagnostic error "-Wpedantic"
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#endif
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#include "mlx5.h"
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#include "mlx5_rxtx.h"
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#include "mlx5_utils.h"
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/**
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* DPDK callback to start the device.
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*
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* Simulate device start by attaching all configured flows.
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*
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* @param dev
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* Pointer to Ethernet device structure.
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*
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* @return
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* 0 on success, negative errno value on failure.
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*/
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int
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mlx5_dev_start(struct rte_eth_dev *dev)
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{
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struct priv *priv = dev->data->dev_private;
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int err;
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if (mlx5_is_secondary())
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return -E_RTE_SECONDARY;
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priv_lock(priv);
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if (priv->started) {
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priv_unlock(priv);
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return 0;
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}
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DEBUG("%p: allocating and configuring hash RX queues", (void *)dev);
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err = priv_create_hash_rxqs(priv);
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if (!err)
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err = priv_rehash_flows(priv);
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if (!err)
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priv->started = 1;
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else {
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ERROR("%p: an error occurred while configuring hash RX queues:"
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" %s",
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(void *)priv, strerror(err));
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goto error;
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}
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if (dev->data->dev_conf.fdir_conf.mode != RTE_FDIR_MODE_NONE)
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priv_fdir_enable(priv);
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err = priv_flow_start(priv);
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if (err) {
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priv->started = 0;
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ERROR("%p: an error occurred while configuring flows:"
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" %s",
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(void *)priv, strerror(err));
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goto error;
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}
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priv_dev_interrupt_handler_install(priv, dev);
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if (dev->data->dev_conf.intr_conf.rxq) {
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err = priv_intr_efd_enable(priv);
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if (!err)
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err = priv_create_intr_vec(priv);
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}
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priv_xstats_init(priv);
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priv_unlock(priv);
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return 0;
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error:
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/* Rollback. */
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priv_special_flow_disable_all(priv);
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priv_mac_addrs_disable(priv);
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priv_destroy_hash_rxqs(priv);
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priv_flow_stop(priv);
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return -err;
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}
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/**
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* DPDK callback to stop the device.
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*
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* Simulate device stop by detaching all configured flows.
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*
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* @param dev
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* Pointer to Ethernet device structure.
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*/
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void
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mlx5_dev_stop(struct rte_eth_dev *dev)
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{
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struct priv *priv = dev->data->dev_private;
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if (mlx5_is_secondary())
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return;
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priv_lock(priv);
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if (!priv->started) {
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priv_unlock(priv);
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return;
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}
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DEBUG("%p: cleaning up and destroying hash RX queues", (void *)dev);
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priv_special_flow_disable_all(priv);
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priv_mac_addrs_disable(priv);
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priv_destroy_hash_rxqs(priv);
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priv_fdir_disable(priv);
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priv_flow_stop(priv);
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priv_dev_interrupt_handler_uninstall(priv, dev);
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if (priv->dev->data->dev_conf.intr_conf.rxq) {
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priv_destroy_intr_vec(priv);
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priv_intr_efd_disable(priv);
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}
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priv->started = 0;
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priv_unlock(priv);
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}
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