/*- * 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 #include #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; unsigned int i = 0; unsigned int r; struct rxq *rxq; priv_lock(priv); if (priv->started) { priv_unlock(priv); return 0; } DEBUG("%p: attaching configured flows to all RX queues", (void *)dev); priv->started = 1; if (priv->rss) { rxq = &priv->rxq_parent; r = 1; } else { rxq = (*priv->rxqs)[0]; r = priv->rxqs_n; } /* Iterate only once when RSS is enabled. */ do { int ret; /* Ignore nonexistent RX queues. */ if (rxq == NULL) continue; ret = rxq_mac_addrs_add(rxq); if (!ret && priv->promisc_req) ret = rxq_promiscuous_enable(rxq); if (!ret && priv->allmulti_req) ret = rxq_allmulticast_enable(rxq); if (!ret) continue; WARN("%p: QP flow attachment failed: %s", (void *)dev, strerror(ret)); /* Rollback. */ while (i != 0) { rxq = (*priv->rxqs)[--i]; if (rxq != NULL) { rxq_allmulticast_disable(rxq); rxq_promiscuous_disable(rxq); rxq_mac_addrs_del(rxq); } } priv->started = 0; priv_unlock(priv); return -ret; } while ((--r) && ((rxq = (*priv->rxqs)[++i]), i)); priv_unlock(priv); return 0; } /** * 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; unsigned int i = 0; unsigned int r; struct rxq *rxq; priv_lock(priv); if (!priv->started) { priv_unlock(priv); return; } DEBUG("%p: detaching flows from all RX queues", (void *)dev); priv->started = 0; if (priv->rss) { rxq = &priv->rxq_parent; r = 1; } else { rxq = (*priv->rxqs)[0]; r = priv->rxqs_n; } /* Iterate only once when RSS is enabled. */ do { /* Ignore nonexistent RX queues. */ if (rxq == NULL) continue; rxq_allmulticast_disable(rxq); rxq_promiscuous_disable(rxq); rxq_mac_addrs_del(rxq); } while ((--r) && ((rxq = (*priv->rxqs)[++i]), i)); priv_unlock(priv); }