1*a9643ea8Slogwang /*- 2*a9643ea8Slogwang * BSD LICENSE 3*a9643ea8Slogwang * 4*a9643ea8Slogwang * Copyright 2015 6WIND S.A. 5*a9643ea8Slogwang * Copyright 2015 Mellanox. 6*a9643ea8Slogwang * 7*a9643ea8Slogwang * Redistribution and use in source and binary forms, with or without 8*a9643ea8Slogwang * modification, are permitted provided that the following conditions 9*a9643ea8Slogwang * are met: 10*a9643ea8Slogwang * 11*a9643ea8Slogwang * * Redistributions of source code must retain the above copyright 12*a9643ea8Slogwang * notice, this list of conditions and the following disclaimer. 13*a9643ea8Slogwang * * Redistributions in binary form must reproduce the above copyright 14*a9643ea8Slogwang * notice, this list of conditions and the following disclaimer in 15*a9643ea8Slogwang * the documentation and/or other materials provided with the 16*a9643ea8Slogwang * distribution. 17*a9643ea8Slogwang * * Neither the name of 6WIND S.A. nor the names of its 18*a9643ea8Slogwang * contributors may be used to endorse or promote products derived 19*a9643ea8Slogwang * from this software without specific prior written permission. 20*a9643ea8Slogwang * 21*a9643ea8Slogwang * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22*a9643ea8Slogwang * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23*a9643ea8Slogwang * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24*a9643ea8Slogwang * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25*a9643ea8Slogwang * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26*a9643ea8Slogwang * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27*a9643ea8Slogwang * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28*a9643ea8Slogwang * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29*a9643ea8Slogwang * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30*a9643ea8Slogwang * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31*a9643ea8Slogwang * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32*a9643ea8Slogwang */ 33*a9643ea8Slogwang 34*a9643ea8Slogwang /* DPDK headers don't like -pedantic. */ 35*a9643ea8Slogwang #ifdef PEDANTIC 36*a9643ea8Slogwang #pragma GCC diagnostic ignored "-Wpedantic" 37*a9643ea8Slogwang #endif 38*a9643ea8Slogwang #include <rte_ether.h> 39*a9643ea8Slogwang #include <rte_ethdev.h> 40*a9643ea8Slogwang #include <rte_interrupts.h> 41*a9643ea8Slogwang #include <rte_alarm.h> 42*a9643ea8Slogwang #ifdef PEDANTIC 43*a9643ea8Slogwang #pragma GCC diagnostic error "-Wpedantic" 44*a9643ea8Slogwang #endif 45*a9643ea8Slogwang 46*a9643ea8Slogwang #include "mlx5.h" 47*a9643ea8Slogwang #include "mlx5_rxtx.h" 48*a9643ea8Slogwang #include "mlx5_utils.h" 49*a9643ea8Slogwang 50*a9643ea8Slogwang /** 51*a9643ea8Slogwang * DPDK callback to start the device. 52*a9643ea8Slogwang * 53*a9643ea8Slogwang * Simulate device start by attaching all configured flows. 54*a9643ea8Slogwang * 55*a9643ea8Slogwang * @param dev 56*a9643ea8Slogwang * Pointer to Ethernet device structure. 57*a9643ea8Slogwang * 58*a9643ea8Slogwang * @return 59*a9643ea8Slogwang * 0 on success, negative errno value on failure. 60*a9643ea8Slogwang */ 61*a9643ea8Slogwang int 62*a9643ea8Slogwang mlx5_dev_start(struct rte_eth_dev *dev) 63*a9643ea8Slogwang { 64*a9643ea8Slogwang struct priv *priv = dev->data->dev_private; 65*a9643ea8Slogwang int err; 66*a9643ea8Slogwang 67*a9643ea8Slogwang if (mlx5_is_secondary()) 68*a9643ea8Slogwang return -E_RTE_SECONDARY; 69*a9643ea8Slogwang 70*a9643ea8Slogwang priv_lock(priv); 71*a9643ea8Slogwang if (priv->started) { 72*a9643ea8Slogwang priv_unlock(priv); 73*a9643ea8Slogwang return 0; 74*a9643ea8Slogwang } 75*a9643ea8Slogwang DEBUG("%p: allocating and configuring hash RX queues", (void *)dev); 76*a9643ea8Slogwang err = priv_create_hash_rxqs(priv); 77*a9643ea8Slogwang if (!err) 78*a9643ea8Slogwang err = priv_rehash_flows(priv); 79*a9643ea8Slogwang if (!err) 80*a9643ea8Slogwang priv->started = 1; 81*a9643ea8Slogwang else { 82*a9643ea8Slogwang ERROR("%p: an error occurred while configuring hash RX queues:" 83*a9643ea8Slogwang " %s", 84*a9643ea8Slogwang (void *)priv, strerror(err)); 85*a9643ea8Slogwang /* Rollback. */ 86*a9643ea8Slogwang priv_special_flow_disable_all(priv); 87*a9643ea8Slogwang priv_mac_addrs_disable(priv); 88*a9643ea8Slogwang priv_destroy_hash_rxqs(priv); 89*a9643ea8Slogwang } 90*a9643ea8Slogwang if (dev->data->dev_conf.fdir_conf.mode != RTE_FDIR_MODE_NONE) 91*a9643ea8Slogwang priv_fdir_enable(priv); 92*a9643ea8Slogwang priv_dev_interrupt_handler_install(priv, dev); 93*a9643ea8Slogwang priv_unlock(priv); 94*a9643ea8Slogwang return -err; 95*a9643ea8Slogwang } 96*a9643ea8Slogwang 97*a9643ea8Slogwang /** 98*a9643ea8Slogwang * DPDK callback to stop the device. 99*a9643ea8Slogwang * 100*a9643ea8Slogwang * Simulate device stop by detaching all configured flows. 101*a9643ea8Slogwang * 102*a9643ea8Slogwang * @param dev 103*a9643ea8Slogwang * Pointer to Ethernet device structure. 104*a9643ea8Slogwang */ 105*a9643ea8Slogwang void 106*a9643ea8Slogwang mlx5_dev_stop(struct rte_eth_dev *dev) 107*a9643ea8Slogwang { 108*a9643ea8Slogwang struct priv *priv = dev->data->dev_private; 109*a9643ea8Slogwang 110*a9643ea8Slogwang if (mlx5_is_secondary()) 111*a9643ea8Slogwang return; 112*a9643ea8Slogwang 113*a9643ea8Slogwang priv_lock(priv); 114*a9643ea8Slogwang if (!priv->started) { 115*a9643ea8Slogwang priv_unlock(priv); 116*a9643ea8Slogwang return; 117*a9643ea8Slogwang } 118*a9643ea8Slogwang DEBUG("%p: cleaning up and destroying hash RX queues", (void *)dev); 119*a9643ea8Slogwang priv_special_flow_disable_all(priv); 120*a9643ea8Slogwang priv_mac_addrs_disable(priv); 121*a9643ea8Slogwang priv_destroy_hash_rxqs(priv); 122*a9643ea8Slogwang priv_fdir_disable(priv); 123*a9643ea8Slogwang priv_dev_interrupt_handler_uninstall(priv, dev); 124*a9643ea8Slogwang priv->started = 0; 125*a9643ea8Slogwang priv_unlock(priv); 126*a9643ea8Slogwang } 127