--- /dev/null
+/*-
+ * 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 <stddef.h>
+#include <errno.h>
+#include <assert.h>
+#include <stdint.h>
+
+/* DPDK headers don't like -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-pedantic"
+#endif
+#include <rte_ethdev.h>
+#include <rte_common.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-pedantic"
+#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],
+ 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];
+#ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
+ 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->wq, &mod);
+ if (err) {
+ ERROR("%p: failed to modified stripping mode: %s",
+ (void *)priv, strerror(err));
+ return;
+ }
+
+#endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
+
+ /* 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);
+ }
+}
Code Review / deb_dpdk.git / blobdiff