--- /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 <string.h>
+
+/* Verbs header. */
+/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-pedantic"
+#endif
+#include <infiniband/verbs.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-pedantic"
+#endif
+
+/* DPDK headers don't like -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-pedantic"
+#endif
+#include <rte_ethdev.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-pedantic"
+#endif
+
+#include "mlx5.h"
+#include "mlx5_rxtx.h"
+#include "mlx5_utils.h"
+
+/* Initialization data for special flows. */
+static const struct special_flow_init special_flow_init[] = {
+ [HASH_RXQ_FLOW_TYPE_PROMISC] = {
+ .dst_mac_val = "\x00\x00\x00\x00\x00\x00",
+ .dst_mac_mask = "\x00\x00\x00\x00\x00\x00",
+ .hash_types =
+ 1 << HASH_RXQ_TCPV4 |
+ 1 << HASH_RXQ_UDPV4 |
+ 1 << HASH_RXQ_IPV4 |
+#ifdef HAVE_FLOW_SPEC_IPV6
+ 1 << HASH_RXQ_TCPV6 |
+ 1 << HASH_RXQ_UDPV6 |
+ 1 << HASH_RXQ_IPV6 |
+#endif /* HAVE_FLOW_SPEC_IPV6 */
+ 1 << HASH_RXQ_ETH |
+ 0,
+ .per_vlan = 0,
+ },
+ [HASH_RXQ_FLOW_TYPE_ALLMULTI] = {
+ .dst_mac_val = "\x01\x00\x00\x00\x00\x00",
+ .dst_mac_mask = "\x01\x00\x00\x00\x00\x00",
+ .hash_types =
+ 1 << HASH_RXQ_UDPV4 |
+ 1 << HASH_RXQ_IPV4 |
+#ifdef HAVE_FLOW_SPEC_IPV6
+ 1 << HASH_RXQ_UDPV6 |
+ 1 << HASH_RXQ_IPV6 |
+#endif /* HAVE_FLOW_SPEC_IPV6 */
+ 1 << HASH_RXQ_ETH |
+ 0,
+ .per_vlan = 0,
+ },
+ [HASH_RXQ_FLOW_TYPE_BROADCAST] = {
+ .dst_mac_val = "\xff\xff\xff\xff\xff\xff",
+ .dst_mac_mask = "\xff\xff\xff\xff\xff\xff",
+ .hash_types =
+ 1 << HASH_RXQ_UDPV4 |
+ 1 << HASH_RXQ_IPV4 |
+#ifdef HAVE_FLOW_SPEC_IPV6
+ 1 << HASH_RXQ_UDPV6 |
+ 1 << HASH_RXQ_IPV6 |
+#endif /* HAVE_FLOW_SPEC_IPV6 */
+ 1 << HASH_RXQ_ETH |
+ 0,
+ .per_vlan = 1,
+ },
+#ifdef HAVE_FLOW_SPEC_IPV6
+ [HASH_RXQ_FLOW_TYPE_IPV6MULTI] = {
+ .dst_mac_val = "\x33\x33\x00\x00\x00\x00",
+ .dst_mac_mask = "\xff\xff\x00\x00\x00\x00",
+ .hash_types =
+ 1 << HASH_RXQ_UDPV6 |
+ 1 << HASH_RXQ_IPV6 |
+ 1 << HASH_RXQ_ETH |
+ 0,
+ .per_vlan = 1,
+ },
+#endif /* HAVE_FLOW_SPEC_IPV6 */
+};
+
+/**
+ * Enable a special flow in a hash RX queue for a given VLAN index.
+ *
+ * @param hash_rxq
+ * Pointer to hash RX queue structure.
+ * @param flow_type
+ * Special flow type.
+ * @param vlan_index
+ * VLAN index to use.
+ *
+ * @return
+ * 0 on success, errno value on failure.
+ */
+static int
+hash_rxq_special_flow_enable_vlan(struct hash_rxq *hash_rxq,
+ enum hash_rxq_flow_type flow_type,
+ unsigned int vlan_index)
+{
+ struct priv *priv = hash_rxq->priv;
+ struct ibv_exp_flow *flow;
+ FLOW_ATTR_SPEC_ETH(data, priv_flow_attr(priv, NULL, 0, hash_rxq->type));
+ struct ibv_exp_flow_attr *attr = &data->attr;
+ struct ibv_exp_flow_spec_eth *spec = &data->spec;
+ const uint8_t *mac;
+ const uint8_t *mask;
+ unsigned int vlan_enabled = (priv->vlan_filter_n &&
+ special_flow_init[flow_type].per_vlan);
+ unsigned int vlan_id = priv->vlan_filter[vlan_index];
+
+ /* Check if flow is relevant for this hash_rxq. */
+ if (!(special_flow_init[flow_type].hash_types & (1 << hash_rxq->type)))
+ return 0;
+ /* Check if flow already exists. */
+ if (hash_rxq->special_flow[flow_type][vlan_index] != NULL)
+ return 0;
+
+ /*
+ * No padding must be inserted by the compiler between attr and spec.
+ * This layout is expected by libibverbs.
+ */
+ assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec);
+ priv_flow_attr(priv, attr, sizeof(data), hash_rxq->type);
+ /* The first specification must be Ethernet. */
+ assert(spec->type == IBV_EXP_FLOW_SPEC_ETH);
+ assert(spec->size == sizeof(*spec));
+
+ mac = special_flow_init[flow_type].dst_mac_val;
+ mask = special_flow_init[flow_type].dst_mac_mask;
+ *spec = (struct ibv_exp_flow_spec_eth){
+ .type = IBV_EXP_FLOW_SPEC_ETH,
+ .size = sizeof(*spec),
+ .val = {
+ .dst_mac = {
+ mac[0], mac[1], mac[2],
+ mac[3], mac[4], mac[5],
+ },
+ .vlan_tag = (vlan_enabled ? htons(vlan_id) : 0),
+ },
+ .mask = {
+ .dst_mac = {
+ mask[0], mask[1], mask[2],
+ mask[3], mask[4], mask[5],
+ },
+ .vlan_tag = (vlan_enabled ? htons(0xfff) : 0),
+ },
+ };
+
+ errno = 0;
+ flow = ibv_exp_create_flow(hash_rxq->qp, attr);
+ if (flow == NULL) {
+ /* It's not clear whether errno is always set in this case. */
+ ERROR("%p: flow configuration failed, errno=%d: %s",
+ (void *)hash_rxq, errno,
+ (errno ? strerror(errno) : "Unknown error"));
+ if (errno)
+ return errno;
+ return EINVAL;
+ }
+ hash_rxq->special_flow[flow_type][vlan_index] = flow;
+ DEBUG("%p: special flow %s (index %d) VLAN %u (index %u) enabled",
+ (void *)hash_rxq, hash_rxq_flow_type_str(flow_type), flow_type,
+ vlan_id, vlan_index);
+ return 0;
+}
+
+/**
+ * Disable a special flow in a hash RX queue for a given VLAN index.
+ *
+ * @param hash_rxq
+ * Pointer to hash RX queue structure.
+ * @param flow_type
+ * Special flow type.
+ * @param vlan_index
+ * VLAN index to use.
+ */
+static void
+hash_rxq_special_flow_disable_vlan(struct hash_rxq *hash_rxq,
+ enum hash_rxq_flow_type flow_type,
+ unsigned int vlan_index)
+{
+ struct ibv_exp_flow *flow =
+ hash_rxq->special_flow[flow_type][vlan_index];
+
+ if (flow == NULL)
+ return;
+ claim_zero(ibv_exp_destroy_flow(flow));
+ hash_rxq->special_flow[flow_type][vlan_index] = NULL;
+ DEBUG("%p: special flow %s (index %d) VLAN %u (index %u) disabled",
+ (void *)hash_rxq, hash_rxq_flow_type_str(flow_type), flow_type,
+ hash_rxq->priv->vlan_filter[vlan_index], vlan_index);
+}
+
+/**
+ * Enable a special flow in a hash RX queue.
+ *
+ * @param hash_rxq
+ * Pointer to hash RX queue structure.
+ * @param flow_type
+ * Special flow type.
+ * @param vlan_index
+ * VLAN index to use.
+ *
+ * @return
+ * 0 on success, errno value on failure.
+ */
+static int
+hash_rxq_special_flow_enable(struct hash_rxq *hash_rxq,
+ enum hash_rxq_flow_type flow_type)
+{
+ struct priv *priv = hash_rxq->priv;
+ unsigned int i = 0;
+ int ret;
+
+ assert((unsigned int)flow_type < RTE_DIM(hash_rxq->special_flow));
+ assert(RTE_DIM(hash_rxq->special_flow[flow_type]) ==
+ RTE_DIM(priv->vlan_filter));
+ /* Add a special flow for each VLAN filter when relevant. */
+ do {
+ ret = hash_rxq_special_flow_enable_vlan(hash_rxq, flow_type, i);
+ if (ret) {
+ /* Failure, rollback. */
+ while (i != 0)
+ hash_rxq_special_flow_disable_vlan(hash_rxq,
+ flow_type,
+ --i);
+ return ret;
+ }
+ } while (special_flow_init[flow_type].per_vlan &&
+ ++i < priv->vlan_filter_n);
+ return 0;
+}
+
+/**
+ * Disable a special flow in a hash RX queue.
+ *
+ * @param hash_rxq
+ * Pointer to hash RX queue structure.
+ * @param flow_type
+ * Special flow type.
+ */
+static void
+hash_rxq_special_flow_disable(struct hash_rxq *hash_rxq,
+ enum hash_rxq_flow_type flow_type)
+{
+ unsigned int i;
+
+ assert((unsigned int)flow_type < RTE_DIM(hash_rxq->special_flow));
+ for (i = 0; (i != RTE_DIM(hash_rxq->special_flow[flow_type])); ++i)
+ hash_rxq_special_flow_disable_vlan(hash_rxq, flow_type, i);
+}
+
+/**
+ * Enable a special flow in all hash RX queues.
+ *
+ * @param priv
+ * Private structure.
+ * @param flow_type
+ * Special flow type.
+ *
+ * @return
+ * 0 on success, errno value on failure.
+ */
+int
+priv_special_flow_enable(struct priv *priv, enum hash_rxq_flow_type flow_type)
+{
+ unsigned int i;
+
+ if (!priv_allow_flow_type(priv, flow_type))
+ return 0;
+ for (i = 0; (i != priv->hash_rxqs_n); ++i) {
+ struct hash_rxq *hash_rxq = &(*priv->hash_rxqs)[i];
+ int ret;
+
+ ret = hash_rxq_special_flow_enable(hash_rxq, flow_type);
+ if (!ret)
+ continue;
+ /* Failure, rollback. */
+ while (i != 0) {
+ hash_rxq = &(*priv->hash_rxqs)[--i];
+ hash_rxq_special_flow_disable(hash_rxq, flow_type);
+ }
+ return ret;
+ }
+ return 0;
+}
+
+/**
+ * Disable a special flow in all hash RX queues.
+ *
+ * @param priv
+ * Private structure.
+ * @param flow_type
+ * Special flow type.
+ */
+void
+priv_special_flow_disable(struct priv *priv, enum hash_rxq_flow_type flow_type)
+{
+ unsigned int i;
+
+ for (i = 0; (i != priv->hash_rxqs_n); ++i) {
+ struct hash_rxq *hash_rxq = &(*priv->hash_rxqs)[i];
+
+ hash_rxq_special_flow_disable(hash_rxq, flow_type);
+ }
+}
+
+/**
+ * Enable all special flows in all hash RX queues.
+ *
+ * @param priv
+ * Private structure.
+ */
+int
+priv_special_flow_enable_all(struct priv *priv)
+{
+ enum hash_rxq_flow_type flow_type;
+
+ for (flow_type = 0; flow_type != HASH_RXQ_FLOW_TYPE_MAC; ++flow_type) {
+ int ret;
+
+ ret = priv_special_flow_enable(priv, flow_type);
+ if (!ret)
+ continue;
+ /* Failure, rollback. */
+ while (flow_type)
+ priv_special_flow_disable(priv, --flow_type);
+ return ret;
+ }
+ return 0;
+}
+
+/**
+ * Disable all special flows in all hash RX queues.
+ *
+ * @param priv
+ * Private structure.
+ */
+void
+priv_special_flow_disable_all(struct priv *priv)
+{
+ enum hash_rxq_flow_type flow_type;
+
+ for (flow_type = 0; flow_type != HASH_RXQ_FLOW_TYPE_MAC; ++flow_type)
+ priv_special_flow_disable(priv, flow_type);
+}
+
+/**
+ * DPDK callback to enable promiscuous mode.
+ *
+ * @param dev
+ * Pointer to Ethernet device structure.
+ */
+void
+mlx5_promiscuous_enable(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ int ret;
+
+ if (mlx5_is_secondary())
+ return;
+
+ priv_lock(priv);
+ priv->promisc_req = 1;
+ ret = priv_rehash_flows(priv);
+ if (ret)
+ ERROR("error while enabling promiscuous mode: %s",
+ strerror(ret));
+ priv_unlock(priv);
+}
+
+/**
+ * DPDK callback to disable promiscuous mode.
+ *
+ * @param dev
+ * Pointer to Ethernet device structure.
+ */
+void
+mlx5_promiscuous_disable(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ int ret;
+
+ if (mlx5_is_secondary())
+ return;
+
+ priv_lock(priv);
+ priv->promisc_req = 0;
+ ret = priv_rehash_flows(priv);
+ if (ret)
+ ERROR("error while disabling promiscuous mode: %s",
+ strerror(ret));
+ priv_unlock(priv);
+}
+
+/**
+ * DPDK callback to enable allmulti mode.
+ *
+ * @param dev
+ * Pointer to Ethernet device structure.
+ */
+void
+mlx5_allmulticast_enable(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ int ret;
+
+ if (mlx5_is_secondary())
+ return;
+
+ priv_lock(priv);
+ priv->allmulti_req = 1;
+ ret = priv_rehash_flows(priv);
+ if (ret)
+ ERROR("error while enabling allmulticast mode: %s",
+ strerror(ret));
+ priv_unlock(priv);
+}
+
+/**
+ * DPDK callback to disable allmulti mode.
+ *
+ * @param dev
+ * Pointer to Ethernet device structure.
+ */
+void
+mlx5_allmulticast_disable(struct rte_eth_dev *dev)
+{
+ struct priv *priv = dev->data->dev_private;
+ int ret;
+
+ if (mlx5_is_secondary())
+ return;
+
+ priv_lock(priv);
+ priv->allmulti_req = 0;
+ ret = priv_rehash_flows(priv);
+ if (ret)
+ ERROR("error while disabling allmulticast mode: %s",
+ strerror(ret));
+ priv_unlock(priv);
+}
Code Review / deb_dpdk.git / blobdiff