/*- * 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. */ #include #include #include #include /* * Not needed by this file; included to work around the lack of off_t * definition for mlx5dv.h with unpatched rdma-core versions. */ #include /* DPDK headers don't like -pedantic. */ #ifdef PEDANTIC #pragma GCC diagnostic ignored "-Wpedantic" #endif #include #include #ifdef PEDANTIC #pragma GCC diagnostic error "-Wpedantic" #endif #include "mlx5_utils.h" #include "mlx5.h" #include "mlx5_autoconf.h" /** * Configure a VLAN filter. * * @param dev * Pointer to Ethernet device structure. * @param vlan_id * VLAN ID to filter. * @param on * Toggle filter. * * @return * 0 on success, errno value on failure. */ static int vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) { struct priv *priv = dev->data->dev_private; unsigned int i; DEBUG("%p: %s VLAN filter ID %" PRIu16, (void *)dev, (on ? "enable" : "disable"), vlan_id); assert(priv->vlan_filter_n <= RTE_DIM(priv->vlan_filter)); for (i = 0; (i != priv->vlan_filter_n); ++i) if (priv->vlan_filter[i] == vlan_id) break; /* Check if there's room for another VLAN filter. */ if (i == RTE_DIM(priv->vlan_filter)) return ENOMEM; if (i < priv->vlan_filter_n) { assert(priv->vlan_filter_n != 0); /* Enabling an existing VLAN filter has no effect. */ if (on) return 0; /* Remove VLAN filter from list. */ --priv->vlan_filter_n; memmove(&priv->vlan_filter[i], &priv->vlan_filter[i + 1], sizeof(priv->vlan_filter[i]) * (priv->vlan_filter_n - i)); priv->vlan_filter[priv->vlan_filter_n] = 0; } else { assert(i == priv->vlan_filter_n); /* Disabling an unknown VLAN filter has no effect. */ if (!on) return 0; /* Add new VLAN filter. */ priv->vlan_filter[priv->vlan_filter_n] = vlan_id; ++priv->vlan_filter_n; } /* Rehash flows in all hash RX queues. */ priv_mac_addrs_disable(priv); priv_special_flow_disable_all(priv); return priv_rehash_flows(priv); } /** * DPDK callback to configure a VLAN filter. * * @param dev * Pointer to Ethernet device structure. * @param vlan_id * VLAN ID to filter. * @param on * Toggle filter. * * @return * 0 on success, negative errno value on failure. */ int mlx5_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) { struct priv *priv = dev->data->dev_private; int ret; priv_lock(priv); ret = vlan_filter_set(dev, vlan_id, on); priv_unlock(priv); assert(ret >= 0); return -ret; } /** * Set/reset VLAN stripping for a specific queue. * * @param priv * Pointer to private structure. * @param idx * RX queue index. * @param on * Enable/disable VLAN stripping. */ static void priv_vlan_strip_queue_set(struct priv *priv, uint16_t idx, int on) { struct rxq *rxq = (*priv->rxqs)[idx]; struct rxq_ctrl *rxq_ctrl = container_of(rxq, struct rxq_ctrl, rxq); struct ibv_exp_wq_attr mod; uint16_t vlan_offloads = (on ? IBV_EXP_RECEIVE_WQ_CVLAN_STRIP : 0) | 0; int err; DEBUG("set VLAN offloads 0x%x for port %d queue %d", vlan_offloads, rxq->port_id, idx); mod = (struct ibv_exp_wq_attr){ .attr_mask = IBV_EXP_WQ_ATTR_VLAN_OFFLOADS, .vlan_offloads = vlan_offloads, }; err = ibv_exp_modify_wq(rxq_ctrl->wq, &mod); if (err) { ERROR("%p: failed to modified stripping mode: %s", (void *)priv, strerror(err)); return; } /* Update related bits in RX queue. */ rxq->vlan_strip = !!on; } /** * Callback to set/reset VLAN stripping for a specific queue. * * @param dev * Pointer to Ethernet device structure. * @param queue * RX queue index. * @param on * Enable/disable VLAN stripping. */ void mlx5_vlan_strip_queue_set(struct rte_eth_dev *dev, uint16_t queue, int on) { struct priv *priv = dev->data->dev_private; /* Validate hw support */ if (!priv->hw_vlan_strip) { ERROR("VLAN stripping is not supported"); return; } /* Validate queue number */ if (queue >= priv->rxqs_n) { ERROR("VLAN stripping, invalid queue number %d", queue); return; } priv_lock(priv); priv_vlan_strip_queue_set(priv, queue, on); priv_unlock(priv); } /** * Callback to set/reset VLAN offloads for a port. * * @param dev * Pointer to Ethernet device structure. * @param mask * VLAN offload bit mask. */ void mlx5_vlan_offload_set(struct rte_eth_dev *dev, int mask) { struct priv *priv = dev->data->dev_private; unsigned int i; if (mask & ETH_VLAN_STRIP_MASK) { int hw_vlan_strip = !!dev->data->dev_conf.rxmode.hw_vlan_strip; if (!priv->hw_vlan_strip) { ERROR("VLAN stripping is not supported"); return; } /* Run on every RX queue and set/reset VLAN stripping. */ priv_lock(priv); for (i = 0; (i != priv->rxqs_n); i++) priv_vlan_strip_queue_set(priv, i, hw_vlan_strip); priv_unlock(priv); } }