1 /*- 2 * BSD LICENSE 3 * 4 * Copyright 2015 6WIND S.A. 5 * Copyright 2015 Mellanox. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of 6WIND S.A. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* DPDK headers don't like -pedantic. */ 35 #ifdef PEDANTIC 36 #pragma GCC diagnostic ignored "-pedantic" 37 #endif 38 #include <rte_ether.h> 39 #include <rte_ethdev.h> 40 #include <rte_interrupts.h> 41 #include <rte_alarm.h> 42 #ifdef PEDANTIC 43 #pragma GCC diagnostic error "-pedantic" 44 #endif 45 46 #include "mlx5.h" 47 #include "mlx5_rxtx.h" 48 #include "mlx5_utils.h" 49 50 /** 51 * DPDK callback to start the device. 52 * 53 * Simulate device start by attaching all configured flows. 54 * 55 * @param dev 56 * Pointer to Ethernet device structure. 57 * 58 * @return 59 * 0 on success, negative errno value on failure. 60 */ 61 int 62 mlx5_dev_start(struct rte_eth_dev *dev) 63 { 64 struct priv *priv = dev->data->dev_private; 65 int err; 66 67 priv_lock(priv); 68 if (priv->started) { 69 priv_unlock(priv); 70 return 0; 71 } 72 DEBUG("%p: allocating and configuring hash RX queues", (void *)dev); 73 err = priv_create_hash_rxqs(priv); 74 if (!err) 75 err = priv_rehash_flows(priv); 76 if (!err) 77 priv->started = 1; 78 else { 79 ERROR("%p: an error occurred while configuring hash RX queues:" 80 " %s", 81 (void *)priv, strerror(err)); 82 /* Rollback. */ 83 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_IPV6MULTI); 84 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_BROADCAST); 85 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_ALLMULTI); 86 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_PROMISC); 87 priv_mac_addrs_disable(priv); 88 priv_destroy_hash_rxqs(priv); 89 } 90 priv_dev_interrupt_handler_install(priv, dev); 91 priv_unlock(priv); 92 return -err; 93 } 94 95 /** 96 * DPDK callback to stop the device. 97 * 98 * Simulate device stop by detaching all configured flows. 99 * 100 * @param dev 101 * Pointer to Ethernet device structure. 102 */ 103 void 104 mlx5_dev_stop(struct rte_eth_dev *dev) 105 { 106 struct priv *priv = dev->data->dev_private; 107 108 priv_lock(priv); 109 if (!priv->started) { 110 priv_unlock(priv); 111 return; 112 } 113 DEBUG("%p: cleaning up and destroying hash RX queues", (void *)dev); 114 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_IPV6MULTI); 115 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_BROADCAST); 116 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_ALLMULTI); 117 priv_special_flow_disable(priv, HASH_RXQ_FLOW_TYPE_PROMISC); 118 priv_mac_addrs_disable(priv); 119 priv_destroy_hash_rxqs(priv); 120 priv_dev_interrupt_handler_uninstall(priv, dev); 121 priv->started = 0; 122 priv_unlock(priv); 123 } 124