--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright 2016 6WIND S.A.
+ * Copyright 2016 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 <sys/queue.h>
+#include <string.h>
+
+/* Verbs header. */
+/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+#include <infiniband/verbs.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-Wpedantic"
+#endif
+
+#include <rte_ethdev.h>
+#include <rte_flow.h>
+#include <rte_flow_driver.h>
+#include <rte_malloc.h>
+
+#include "mlx5.h"
+#include "mlx5_prm.h"
+
+/* Number of Work Queue necessary for the DROP queue. */
+#define MLX5_DROP_WQ_N 4
+
+static int
+mlx5_flow_create_eth(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data);
+
+static int
+mlx5_flow_create_vlan(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data);
+
+static int
+mlx5_flow_create_ipv4(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data);
+
+static int
+mlx5_flow_create_ipv6(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data);
+
+static int
+mlx5_flow_create_udp(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data);
+
+static int
+mlx5_flow_create_tcp(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data);
+
+static int
+mlx5_flow_create_vxlan(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data);
+
+struct rte_flow {
+ LIST_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
+ struct ibv_exp_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
+ struct ibv_exp_rwq_ind_table *ind_table; /**< Indirection table. */
+ struct ibv_qp *qp; /**< Verbs queue pair. */
+ struct ibv_exp_flow *ibv_flow; /**< Verbs flow. */
+ struct ibv_exp_wq *wq; /**< Verbs work queue. */
+ struct ibv_cq *cq; /**< Verbs completion queue. */
+ uint16_t rxqs_n; /**< Number of queues in this flow, 0 if drop queue. */
+ uint32_t mark:1; /**< Set if the flow is marked. */
+ uint32_t drop:1; /**< Drop queue. */
+ uint64_t hash_fields; /**< Fields that participate in the hash. */
+ struct rxq *rxqs[]; /**< Pointer to the queues array. */
+};
+
+/** Static initializer for items. */
+#define ITEMS(...) \
+ (const enum rte_flow_item_type []){ \
+ __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \
+ }
+
+/** Structure to generate a simple graph of layers supported by the NIC. */
+struct mlx5_flow_items {
+ /** List of possible actions for these items. */
+ const enum rte_flow_action_type *const actions;
+ /** Bit-masks corresponding to the possibilities for the item. */
+ const void *mask;
+ /**
+ * Default bit-masks to use when item->mask is not provided. When
+ * \default_mask is also NULL, the full supported bit-mask (\mask) is
+ * used instead.
+ */
+ const void *default_mask;
+ /** Bit-masks size in bytes. */
+ const unsigned int mask_sz;
+ /**
+ * Conversion function from rte_flow to NIC specific flow.
+ *
+ * @param item
+ * rte_flow item to convert.
+ * @param default_mask
+ * Default bit-masks to use when item->mask is not provided.
+ * @param data
+ * Internal structure to store the conversion.
+ *
+ * @return
+ * 0 on success, negative value otherwise.
+ */
+ int (*convert)(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data);
+ /** Size in bytes of the destination structure. */
+ const unsigned int dst_sz;
+ /** List of possible following items. */
+ const enum rte_flow_item_type *const items;
+};
+
+/** Valid action for this PMD. */
+static const enum rte_flow_action_type valid_actions[] = {
+ RTE_FLOW_ACTION_TYPE_DROP,
+ RTE_FLOW_ACTION_TYPE_QUEUE,
+ RTE_FLOW_ACTION_TYPE_MARK,
+ RTE_FLOW_ACTION_TYPE_FLAG,
+ RTE_FLOW_ACTION_TYPE_END,
+};
+
+/** Graph of supported items and associated actions. */
+static const struct mlx5_flow_items mlx5_flow_items[] = {
+ [RTE_FLOW_ITEM_TYPE_END] = {
+ .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
+ RTE_FLOW_ITEM_TYPE_VXLAN),
+ },
+ [RTE_FLOW_ITEM_TYPE_ETH] = {
+ .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN,
+ RTE_FLOW_ITEM_TYPE_IPV4,
+ RTE_FLOW_ITEM_TYPE_IPV6),
+ .actions = valid_actions,
+ .mask = &(const struct rte_flow_item_eth){
+ .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
+ .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
+ .type = -1,
+ },
+ .default_mask = &rte_flow_item_eth_mask,
+ .mask_sz = sizeof(struct rte_flow_item_eth),
+ .convert = mlx5_flow_create_eth,
+ .dst_sz = sizeof(struct ibv_exp_flow_spec_eth),
+ },
+ [RTE_FLOW_ITEM_TYPE_VLAN] = {
+ .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4,
+ RTE_FLOW_ITEM_TYPE_IPV6),
+ .actions = valid_actions,
+ .mask = &(const struct rte_flow_item_vlan){
+ .tci = -1,
+ },
+ .default_mask = &rte_flow_item_vlan_mask,
+ .mask_sz = sizeof(struct rte_flow_item_vlan),
+ .convert = mlx5_flow_create_vlan,
+ .dst_sz = 0,
+ },
+ [RTE_FLOW_ITEM_TYPE_IPV4] = {
+ .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
+ RTE_FLOW_ITEM_TYPE_TCP),
+ .actions = valid_actions,
+ .mask = &(const struct rte_flow_item_ipv4){
+ .hdr = {
+ .src_addr = -1,
+ .dst_addr = -1,
+ .type_of_service = -1,
+ .next_proto_id = -1,
+ },
+ },
+ .default_mask = &rte_flow_item_ipv4_mask,
+ .mask_sz = sizeof(struct rte_flow_item_ipv4),
+ .convert = mlx5_flow_create_ipv4,
+ .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv4_ext),
+ },
+ [RTE_FLOW_ITEM_TYPE_IPV6] = {
+ .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
+ RTE_FLOW_ITEM_TYPE_TCP),
+ .actions = valid_actions,
+ .mask = &(const struct rte_flow_item_ipv6){
+ .hdr = {
+ .src_addr = {
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ },
+ .dst_addr = {
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ },
+ .vtc_flow = -1,
+ .proto = -1,
+ .hop_limits = -1,
+ },
+ },
+ .default_mask = &rte_flow_item_ipv6_mask,
+ .mask_sz = sizeof(struct rte_flow_item_ipv6),
+ .convert = mlx5_flow_create_ipv6,
+ .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv6_ext),
+ },
+ [RTE_FLOW_ITEM_TYPE_UDP] = {
+ .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN),
+ .actions = valid_actions,
+ .mask = &(const struct rte_flow_item_udp){
+ .hdr = {
+ .src_port = -1,
+ .dst_port = -1,
+ },
+ },
+ .default_mask = &rte_flow_item_udp_mask,
+ .mask_sz = sizeof(struct rte_flow_item_udp),
+ .convert = mlx5_flow_create_udp,
+ .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp),
+ },
+ [RTE_FLOW_ITEM_TYPE_TCP] = {
+ .actions = valid_actions,
+ .mask = &(const struct rte_flow_item_tcp){
+ .hdr = {
+ .src_port = -1,
+ .dst_port = -1,
+ },
+ },
+ .default_mask = &rte_flow_item_tcp_mask,
+ .mask_sz = sizeof(struct rte_flow_item_tcp),
+ .convert = mlx5_flow_create_tcp,
+ .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp),
+ },
+ [RTE_FLOW_ITEM_TYPE_VXLAN] = {
+ .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH),
+ .actions = valid_actions,
+ .mask = &(const struct rte_flow_item_vxlan){
+ .vni = "\xff\xff\xff",
+ },
+ .default_mask = &rte_flow_item_vxlan_mask,
+ .mask_sz = sizeof(struct rte_flow_item_vxlan),
+ .convert = mlx5_flow_create_vxlan,
+ .dst_sz = sizeof(struct ibv_exp_flow_spec_tunnel),
+ },
+};
+
+/** Structure to pass to the conversion function. */
+struct mlx5_flow {
+ struct ibv_exp_flow_attr *ibv_attr; /**< Verbs attribute. */
+ unsigned int offset; /**< Offset in bytes in the ibv_attr buffer. */
+ uint32_t inner; /**< Set once VXLAN is encountered. */
+ uint64_t hash_fields; /**< Fields that participate in the hash. */
+};
+
+/** Structure for Drop queue. */
+struct rte_flow_drop {
+ struct ibv_exp_rwq_ind_table *ind_table; /**< Indirection table. */
+ struct ibv_qp *qp; /**< Verbs queue pair. */
+ struct ibv_exp_wq *wqs[MLX5_DROP_WQ_N]; /**< Verbs work queue. */
+ struct ibv_cq *cq; /**< Verbs completion queue. */
+};
+
+struct mlx5_flow_action {
+ uint32_t queue:1; /**< Target is a receive queue. */
+ uint32_t drop:1; /**< Target is a drop queue. */
+ uint32_t mark:1; /**< Mark is present in the flow. */
+ uint32_t mark_id; /**< Mark identifier. */
+ uint16_t queues[RTE_MAX_QUEUES_PER_PORT]; /**< Queues indexes to use. */
+ uint16_t queues_n; /**< Number of entries in queue[]. */
+};
+
+/**
+ * Check support for a given item.
+ *
+ * @param item[in]
+ * Item specification.
+ * @param mask[in]
+ * Bit-masks covering supported fields to compare with spec, last and mask in
+ * \item.
+ * @param size
+ * Bit-Mask size in bytes.
+ *
+ * @return
+ * 0 on success.
+ */
+static int
+mlx5_flow_item_validate(const struct rte_flow_item *item,
+ const uint8_t *mask, unsigned int size)
+{
+ int ret = 0;
+
+ if (!item->spec && (item->mask || item->last))
+ return -1;
+ if (item->spec && !item->mask) {
+ unsigned int i;
+ const uint8_t *spec = item->spec;
+
+ for (i = 0; i < size; ++i)
+ if ((spec[i] | mask[i]) != mask[i])
+ return -1;
+ }
+ if (item->last && !item->mask) {
+ unsigned int i;
+ const uint8_t *spec = item->last;
+
+ for (i = 0; i < size; ++i)
+ if ((spec[i] | mask[i]) != mask[i])
+ return -1;
+ }
+ if (item->mask) {
+ unsigned int i;
+ const uint8_t *spec = item->mask;
+
+ for (i = 0; i < size; ++i)
+ if ((spec[i] | mask[i]) != mask[i])
+ return -1;
+ }
+ if (item->spec && item->last) {
+ uint8_t spec[size];
+ uint8_t last[size];
+ const uint8_t *apply = mask;
+ unsigned int i;
+
+ if (item->mask)
+ apply = item->mask;
+ for (i = 0; i < size; ++i) {
+ spec[i] = ((const uint8_t *)item->spec)[i] & apply[i];
+ last[i] = ((const uint8_t *)item->last)[i] & apply[i];
+ }
+ ret = memcmp(spec, last, size);
+ }
+ return ret;
+}
+
+/**
+ * Validate a flow supported by the NIC.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param[in] attr
+ * Flow rule attributes.
+ * @param[in] pattern
+ * Pattern specification (list terminated by the END pattern item).
+ * @param[in] actions
+ * Associated actions (list terminated by the END action).
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ * @param[in, out] flow
+ * Flow structure to update.
+ * @param[in, out] action
+ * Action structure to update.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+priv_flow_validate(struct priv *priv,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item items[],
+ const struct rte_flow_action actions[],
+ struct rte_flow_error *error,
+ struct mlx5_flow *flow,
+ struct mlx5_flow_action *action)
+{
+ const struct mlx5_flow_items *cur_item = mlx5_flow_items;
+
+ (void)priv;
+ if (attr->group) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
+ NULL,
+ "groups are not supported");
+ return -rte_errno;
+ }
+ if (attr->priority) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
+ NULL,
+ "priorities are not supported");
+ return -rte_errno;
+ }
+ if (attr->egress) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
+ NULL,
+ "egress is not supported");
+ return -rte_errno;
+ }
+ if (!attr->ingress) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
+ NULL,
+ "only ingress is supported");
+ return -rte_errno;
+ }
+ for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
+ const struct mlx5_flow_items *token = NULL;
+ unsigned int i;
+ int err;
+
+ if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
+ continue;
+ for (i = 0;
+ cur_item->items &&
+ cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END;
+ ++i) {
+ if (cur_item->items[i] == items->type) {
+ token = &mlx5_flow_items[items->type];
+ break;
+ }
+ }
+ if (!token)
+ goto exit_item_not_supported;
+ cur_item = token;
+ err = mlx5_flow_item_validate(items,
+ (const uint8_t *)cur_item->mask,
+ cur_item->mask_sz);
+ if (err)
+ goto exit_item_not_supported;
+ if (flow->ibv_attr && cur_item->convert) {
+ err = cur_item->convert(items,
+ (cur_item->default_mask ?
+ cur_item->default_mask :
+ cur_item->mask),
+ flow);
+ if (err)
+ goto exit_item_not_supported;
+ } else if (items->type == RTE_FLOW_ITEM_TYPE_VXLAN) {
+ if (flow->inner) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ items,
+ "cannot recognize multiple"
+ " VXLAN encapsulations");
+ return -rte_errno;
+ }
+ flow->inner = 1;
+ }
+ flow->offset += cur_item->dst_sz;
+ }
+ for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
+ if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
+ continue;
+ } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
+ action->drop = 1;
+ } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
+ const struct rte_flow_action_queue *queue =
+ (const struct rte_flow_action_queue *)
+ actions->conf;
+ uint16_t n;
+ uint16_t found = 0;
+
+ if (!queue || (queue->index > (priv->rxqs_n - 1)))
+ goto exit_action_not_supported;
+ for (n = 0; n < action->queues_n; ++n) {
+ if (action->queues[n] == queue->index) {
+ found = 1;
+ break;
+ }
+ }
+ if (action->queues_n > 1 && !found) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ actions,
+ "queue action not in RSS queues");
+ return -rte_errno;
+ }
+ if (!found) {
+ action->queue = 1;
+ action->queues_n = 1;
+ action->queues[0] = queue->index;
+ }
+ } else if (actions->type == RTE_FLOW_ACTION_TYPE_RSS) {
+ const struct rte_flow_action_rss *rss =
+ (const struct rte_flow_action_rss *)
+ actions->conf;
+ uint16_t n;
+
+ if (!rss || !rss->num) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ actions,
+ "no valid queues");
+ return -rte_errno;
+ }
+ if (action->queues_n == 1) {
+ uint16_t found = 0;
+
+ assert(action->queues_n);
+ for (n = 0; n < rss->num; ++n) {
+ if (action->queues[0] ==
+ rss->queue[n]) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ actions,
+ "queue action not in RSS"
+ " queues");
+ return -rte_errno;
+ }
+ }
+ for (n = 0; n < rss->num; ++n) {
+ if (rss->queue[n] >= priv->rxqs_n) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ actions,
+ "queue id > number of"
+ " queues");
+ return -rte_errno;
+ }
+ }
+ action->queue = 1;
+ for (n = 0; n < rss->num; ++n)
+ action->queues[n] = rss->queue[n];
+ action->queues_n = rss->num;
+ } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
+ const struct rte_flow_action_mark *mark =
+ (const struct rte_flow_action_mark *)
+ actions->conf;
+
+ if (!mark) {
+ rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ actions,
+ "mark must be defined");
+ return -rte_errno;
+ } else if (mark->id >= MLX5_FLOW_MARK_MAX) {
+ rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ actions,
+ "mark must be between 0"
+ " and 16777199");
+ return -rte_errno;
+ }
+ action->mark = 1;
+ action->mark_id = mark->id;
+ } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) {
+ action->mark = 1;
+ } else {
+ goto exit_action_not_supported;
+ }
+ }
+ if (action->mark && !flow->ibv_attr && !action->drop)
+ flow->offset += sizeof(struct ibv_exp_flow_spec_action_tag);
+ if (!action->queue && !action->drop) {
+ rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "no valid action");
+ return -rte_errno;
+ }
+ return 0;
+exit_item_not_supported:
+ rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
+ items, "item not supported");
+ return -rte_errno;
+exit_action_not_supported:
+ rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
+ actions, "action not supported");
+ return -rte_errno;
+}
+
+/**
+ * Validate a flow supported by the NIC.
+ *
+ * @see rte_flow_validate()
+ * @see rte_flow_ops
+ */
+int
+mlx5_flow_validate(struct rte_eth_dev *dev,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item items[],
+ const struct rte_flow_action actions[],
+ struct rte_flow_error *error)
+{
+ struct priv *priv = dev->data->dev_private;
+ int ret;
+ struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr) };
+ struct mlx5_flow_action action = {
+ .queue = 0,
+ .drop = 0,
+ .mark = 0,
+ .mark_id = MLX5_FLOW_MARK_DEFAULT,
+ .queues_n = 0,
+ };
+
+ priv_lock(priv);
+ ret = priv_flow_validate(priv, attr, items, actions, error, &flow,
+ &action);
+ priv_unlock(priv);
+ return ret;
+}
+
+/**
+ * Convert Ethernet item to Verbs specification.
+ *
+ * @param item[in]
+ * Item specification.
+ * @param default_mask[in]
+ * Default bit-masks to use when item->mask is not provided.
+ * @param data[in, out]
+ * User structure.
+ */
+static int
+mlx5_flow_create_eth(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data)
+{
+ const struct rte_flow_item_eth *spec = item->spec;
+ const struct rte_flow_item_eth *mask = item->mask;
+ struct mlx5_flow *flow = (struct mlx5_flow *)data;
+ struct ibv_exp_flow_spec_eth *eth;
+ const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth);
+ unsigned int i;
+
+ ++flow->ibv_attr->num_of_specs;
+ flow->ibv_attr->priority = 2;
+ flow->hash_fields = 0;
+ eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
+ *eth = (struct ibv_exp_flow_spec_eth) {
+ .type = flow->inner | IBV_EXP_FLOW_SPEC_ETH,
+ .size = eth_size,
+ };
+ if (!spec)
+ return 0;
+ if (!mask)
+ mask = default_mask;
+ memcpy(eth->val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN);
+ memcpy(eth->val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN);
+ eth->val.ether_type = spec->type;
+ memcpy(eth->mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN);
+ memcpy(eth->mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN);
+ eth->mask.ether_type = mask->type;
+ /* Remove unwanted bits from values. */
+ for (i = 0; i < ETHER_ADDR_LEN; ++i) {
+ eth->val.dst_mac[i] &= eth->mask.dst_mac[i];
+ eth->val.src_mac[i] &= eth->mask.src_mac[i];
+ }
+ eth->val.ether_type &= eth->mask.ether_type;
+ return 0;
+}
+
+/**
+ * Convert VLAN item to Verbs specification.
+ *
+ * @param item[in]
+ * Item specification.
+ * @param default_mask[in]
+ * Default bit-masks to use when item->mask is not provided.
+ * @param data[in, out]
+ * User structure.
+ */
+static int
+mlx5_flow_create_vlan(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data)
+{
+ const struct rte_flow_item_vlan *spec = item->spec;
+ const struct rte_flow_item_vlan *mask = item->mask;
+ struct mlx5_flow *flow = (struct mlx5_flow *)data;
+ struct ibv_exp_flow_spec_eth *eth;
+ const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth);
+
+ eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset - eth_size);
+ if (!spec)
+ return 0;
+ if (!mask)
+ mask = default_mask;
+ eth->val.vlan_tag = spec->tci;
+ eth->mask.vlan_tag = mask->tci;
+ eth->val.vlan_tag &= eth->mask.vlan_tag;
+ return 0;
+}
+
+/**
+ * Convert IPv4 item to Verbs specification.
+ *
+ * @param item[in]
+ * Item specification.
+ * @param default_mask[in]
+ * Default bit-masks to use when item->mask is not provided.
+ * @param data[in, out]
+ * User structure.
+ */
+static int
+mlx5_flow_create_ipv4(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data)
+{
+ const struct rte_flow_item_ipv4 *spec = item->spec;
+ const struct rte_flow_item_ipv4 *mask = item->mask;
+ struct mlx5_flow *flow = (struct mlx5_flow *)data;
+ struct ibv_exp_flow_spec_ipv4_ext *ipv4;
+ unsigned int ipv4_size = sizeof(struct ibv_exp_flow_spec_ipv4_ext);
+
+ ++flow->ibv_attr->num_of_specs;
+ flow->ibv_attr->priority = 1;
+ flow->hash_fields = (IBV_EXP_RX_HASH_SRC_IPV4 |
+ IBV_EXP_RX_HASH_DST_IPV4);
+ ipv4 = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
+ *ipv4 = (struct ibv_exp_flow_spec_ipv4_ext) {
+ .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV4_EXT,
+ .size = ipv4_size,
+ };
+ if (!spec)
+ return 0;
+ if (!mask)
+ mask = default_mask;
+ ipv4->val = (struct ibv_exp_flow_ipv4_ext_filter){
+ .src_ip = spec->hdr.src_addr,
+ .dst_ip = spec->hdr.dst_addr,
+ .proto = spec->hdr.next_proto_id,
+ .tos = spec->hdr.type_of_service,
+ };
+ ipv4->mask = (struct ibv_exp_flow_ipv4_ext_filter){
+ .src_ip = mask->hdr.src_addr,
+ .dst_ip = mask->hdr.dst_addr,
+ .proto = mask->hdr.next_proto_id,
+ .tos = mask->hdr.type_of_service,
+ };
+ /* Remove unwanted bits from values. */
+ ipv4->val.src_ip &= ipv4->mask.src_ip;
+ ipv4->val.dst_ip &= ipv4->mask.dst_ip;
+ ipv4->val.proto &= ipv4->mask.proto;
+ ipv4->val.tos &= ipv4->mask.tos;
+ return 0;
+}
+
+/**
+ * Convert IPv6 item to Verbs specification.
+ *
+ * @param item[in]
+ * Item specification.
+ * @param default_mask[in]
+ * Default bit-masks to use when item->mask is not provided.
+ * @param data[in, out]
+ * User structure.
+ */
+static int
+mlx5_flow_create_ipv6(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data)
+{
+ const struct rte_flow_item_ipv6 *spec = item->spec;
+ const struct rte_flow_item_ipv6 *mask = item->mask;
+ struct mlx5_flow *flow = (struct mlx5_flow *)data;
+ struct ibv_exp_flow_spec_ipv6_ext *ipv6;
+ unsigned int ipv6_size = sizeof(struct ibv_exp_flow_spec_ipv6_ext);
+ unsigned int i;
+
+ ++flow->ibv_attr->num_of_specs;
+ flow->ibv_attr->priority = 1;
+ flow->hash_fields = (IBV_EXP_RX_HASH_SRC_IPV6 |
+ IBV_EXP_RX_HASH_DST_IPV6);
+ ipv6 = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
+ *ipv6 = (struct ibv_exp_flow_spec_ipv6_ext) {
+ .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV6_EXT,
+ .size = ipv6_size,
+ };
+ if (!spec)
+ return 0;
+ if (!mask)
+ mask = default_mask;
+ memcpy(ipv6->val.src_ip, spec->hdr.src_addr,
+ RTE_DIM(ipv6->val.src_ip));
+ memcpy(ipv6->val.dst_ip, spec->hdr.dst_addr,
+ RTE_DIM(ipv6->val.dst_ip));
+ memcpy(ipv6->mask.src_ip, mask->hdr.src_addr,
+ RTE_DIM(ipv6->mask.src_ip));
+ memcpy(ipv6->mask.dst_ip, mask->hdr.dst_addr,
+ RTE_DIM(ipv6->mask.dst_ip));
+ ipv6->mask.flow_label = mask->hdr.vtc_flow;
+ ipv6->mask.next_hdr = mask->hdr.proto;
+ ipv6->mask.hop_limit = mask->hdr.hop_limits;
+ /* Remove unwanted bits from values. */
+ for (i = 0; i < RTE_DIM(ipv6->val.src_ip); ++i) {
+ ipv6->val.src_ip[i] &= ipv6->mask.src_ip[i];
+ ipv6->val.dst_ip[i] &= ipv6->mask.dst_ip[i];
+ }
+ ipv6->val.flow_label &= ipv6->mask.flow_label;
+ ipv6->val.next_hdr &= ipv6->mask.next_hdr;
+ ipv6->val.hop_limit &= ipv6->mask.hop_limit;
+ return 0;
+}
+
+/**
+ * Convert UDP item to Verbs specification.
+ *
+ * @param item[in]
+ * Item specification.
+ * @param default_mask[in]
+ * Default bit-masks to use when item->mask is not provided.
+ * @param data[in, out]
+ * User structure.
+ */
+static int
+mlx5_flow_create_udp(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data)
+{
+ const struct rte_flow_item_udp *spec = item->spec;
+ const struct rte_flow_item_udp *mask = item->mask;
+ struct mlx5_flow *flow = (struct mlx5_flow *)data;
+ struct ibv_exp_flow_spec_tcp_udp *udp;
+ unsigned int udp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp);
+
+ ++flow->ibv_attr->num_of_specs;
+ flow->ibv_attr->priority = 0;
+ flow->hash_fields |= (IBV_EXP_RX_HASH_SRC_PORT_UDP |
+ IBV_EXP_RX_HASH_DST_PORT_UDP);
+ udp = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
+ *udp = (struct ibv_exp_flow_spec_tcp_udp) {
+ .type = flow->inner | IBV_EXP_FLOW_SPEC_UDP,
+ .size = udp_size,
+ };
+ if (!spec)
+ return 0;
+ if (!mask)
+ mask = default_mask;
+ udp->val.dst_port = spec->hdr.dst_port;
+ udp->val.src_port = spec->hdr.src_port;
+ udp->mask.dst_port = mask->hdr.dst_port;
+ udp->mask.src_port = mask->hdr.src_port;
+ /* Remove unwanted bits from values. */
+ udp->val.src_port &= udp->mask.src_port;
+ udp->val.dst_port &= udp->mask.dst_port;
+ return 0;
+}
+
+/**
+ * Convert TCP item to Verbs specification.
+ *
+ * @param item[in]
+ * Item specification.
+ * @param default_mask[in]
+ * Default bit-masks to use when item->mask is not provided.
+ * @param data[in, out]
+ * User structure.
+ */
+static int
+mlx5_flow_create_tcp(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data)
+{
+ const struct rte_flow_item_tcp *spec = item->spec;
+ const struct rte_flow_item_tcp *mask = item->mask;
+ struct mlx5_flow *flow = (struct mlx5_flow *)data;
+ struct ibv_exp_flow_spec_tcp_udp *tcp;
+ unsigned int tcp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp);
+
+ ++flow->ibv_attr->num_of_specs;
+ flow->ibv_attr->priority = 0;
+ flow->hash_fields |= (IBV_EXP_RX_HASH_SRC_PORT_TCP |
+ IBV_EXP_RX_HASH_DST_PORT_TCP);
+ tcp = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
+ *tcp = (struct ibv_exp_flow_spec_tcp_udp) {
+ .type = flow->inner | IBV_EXP_FLOW_SPEC_TCP,
+ .size = tcp_size,
+ };
+ if (!spec)
+ return 0;
+ if (!mask)
+ mask = default_mask;
+ tcp->val.dst_port = spec->hdr.dst_port;
+ tcp->val.src_port = spec->hdr.src_port;
+ tcp->mask.dst_port = mask->hdr.dst_port;
+ tcp->mask.src_port = mask->hdr.src_port;
+ /* Remove unwanted bits from values. */
+ tcp->val.src_port &= tcp->mask.src_port;
+ tcp->val.dst_port &= tcp->mask.dst_port;
+ return 0;
+}
+
+/**
+ * Convert VXLAN item to Verbs specification.
+ *
+ * @param item[in]
+ * Item specification.
+ * @param default_mask[in]
+ * Default bit-masks to use when item->mask is not provided.
+ * @param data[in, out]
+ * User structure.
+ */
+static int
+mlx5_flow_create_vxlan(const struct rte_flow_item *item,
+ const void *default_mask,
+ void *data)
+{
+ const struct rte_flow_item_vxlan *spec = item->spec;
+ const struct rte_flow_item_vxlan *mask = item->mask;
+ struct mlx5_flow *flow = (struct mlx5_flow *)data;
+ struct ibv_exp_flow_spec_tunnel *vxlan;
+ unsigned int size = sizeof(struct ibv_exp_flow_spec_tunnel);
+ union vni {
+ uint32_t vlan_id;
+ uint8_t vni[4];
+ } id;
+
+ ++flow->ibv_attr->num_of_specs;
+ flow->ibv_attr->priority = 0;
+ id.vni[0] = 0;
+ vxlan = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
+ *vxlan = (struct ibv_exp_flow_spec_tunnel) {
+ .type = flow->inner | IBV_EXP_FLOW_SPEC_VXLAN_TUNNEL,
+ .size = size,
+ };
+ flow->inner = IBV_EXP_FLOW_SPEC_INNER;
+ if (!spec)
+ return 0;
+ if (!mask)
+ mask = default_mask;
+ memcpy(&id.vni[1], spec->vni, 3);
+ vxlan->val.tunnel_id = id.vlan_id;
+ memcpy(&id.vni[1], mask->vni, 3);
+ vxlan->mask.tunnel_id = id.vlan_id;
+ /* Remove unwanted bits from values. */
+ vxlan->val.tunnel_id &= vxlan->mask.tunnel_id;
+ return 0;
+}
+
+/**
+ * Convert mark/flag action to Verbs specification.
+ *
+ * @param flow
+ * Pointer to MLX5 flow structure.
+ * @param mark_id
+ * Mark identifier.
+ */
+static int
+mlx5_flow_create_flag_mark(struct mlx5_flow *flow, uint32_t mark_id)
+{
+ struct ibv_exp_flow_spec_action_tag *tag;
+ unsigned int size = sizeof(struct ibv_exp_flow_spec_action_tag);
+
+ tag = (void *)((uintptr_t)flow->ibv_attr + flow->offset);
+ *tag = (struct ibv_exp_flow_spec_action_tag){
+ .type = IBV_EXP_FLOW_SPEC_ACTION_TAG,
+ .size = size,
+ .tag_id = mlx5_flow_mark_set(mark_id),
+ };
+ ++flow->ibv_attr->num_of_specs;
+ return 0;
+}
+
+/**
+ * Complete flow rule creation with a drop queue.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param flow
+ * MLX5 flow attributes (filled by mlx5_flow_validate()).
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ *
+ * @return
+ * A flow if the rule could be created.
+ */
+static struct rte_flow *
+priv_flow_create_action_queue_drop(struct priv *priv,
+ struct mlx5_flow *flow,
+ struct rte_flow_error *error)
+{
+ struct rte_flow *rte_flow;
+
+ assert(priv->pd);
+ assert(priv->ctx);
+ rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow), 0);
+ if (!rte_flow) {
+ rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "cannot allocate flow memory");
+ return NULL;
+ }
+ rte_flow->drop = 1;
+ rte_flow->ibv_attr = flow->ibv_attr;
+ rte_flow->qp = priv->flow_drop_queue->qp;
+ if (!priv->started)
+ return rte_flow;
+ rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp,
+ rte_flow->ibv_attr);
+ if (!rte_flow->ibv_flow) {
+ rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "flow rule creation failure");
+ goto error;
+ }
+ return rte_flow;
+error:
+ assert(rte_flow);
+ rte_free(rte_flow);
+ return NULL;
+}
+
+/**
+ * Complete flow rule creation.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param flow
+ * MLX5 flow attributes (filled by mlx5_flow_validate()).
+ * @param action
+ * Target action structure.
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ *
+ * @return
+ * A flow if the rule could be created.
+ */
+static struct rte_flow *
+priv_flow_create_action_queue(struct priv *priv,
+ struct mlx5_flow *flow,
+ struct mlx5_flow_action *action,
+ struct rte_flow_error *error)
+{
+ struct rte_flow *rte_flow;
+ unsigned int i;
+ unsigned int j;
+ const unsigned int wqs_n = 1 << log2above(action->queues_n);
+ struct ibv_exp_wq *wqs[wqs_n];
+
+ assert(priv->pd);
+ assert(priv->ctx);
+ assert(!action->drop);
+ rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow) +
+ sizeof(*rte_flow->rxqs) * action->queues_n, 0);
+ if (!rte_flow) {
+ rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "cannot allocate flow memory");
+ return NULL;
+ }
+ for (i = 0; i < action->queues_n; ++i) {
+ struct rxq_ctrl *rxq;
+
+ rxq = container_of((*priv->rxqs)[action->queues[i]],
+ struct rxq_ctrl, rxq);
+ wqs[i] = rxq->wq;
+ rte_flow->rxqs[i] = &rxq->rxq;
+ ++rte_flow->rxqs_n;
+ rxq->rxq.mark |= action->mark;
+ }
+ /* finalise indirection table. */
+ for (j = 0; i < wqs_n; ++i, ++j) {
+ wqs[i] = wqs[j];
+ if (j == action->queues_n)
+ j = 0;
+ }
+ rte_flow->mark = action->mark;
+ rte_flow->ibv_attr = flow->ibv_attr;
+ rte_flow->hash_fields = flow->hash_fields;
+ rte_flow->ind_table = ibv_exp_create_rwq_ind_table(
+ priv->ctx,
+ &(struct ibv_exp_rwq_ind_table_init_attr){
+ .pd = priv->pd,
+ .log_ind_tbl_size = log2above(action->queues_n),
+ .ind_tbl = wqs,
+ .comp_mask = 0,
+ });
+ if (!rte_flow->ind_table) {
+ rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "cannot allocate indirection table");
+ goto error;
+ }
+ rte_flow->qp = ibv_exp_create_qp(
+ priv->ctx,
+ &(struct ibv_exp_qp_init_attr){
+ .qp_type = IBV_QPT_RAW_PACKET,
+ .comp_mask =
+ IBV_EXP_QP_INIT_ATTR_PD |
+ IBV_EXP_QP_INIT_ATTR_PORT |
+ IBV_EXP_QP_INIT_ATTR_RX_HASH,
+ .pd = priv->pd,
+ .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){
+ .rx_hash_function =
+ IBV_EXP_RX_HASH_FUNC_TOEPLITZ,
+ .rx_hash_key_len = rss_hash_default_key_len,
+ .rx_hash_key = rss_hash_default_key,
+ .rx_hash_fields_mask = rte_flow->hash_fields,
+ .rwq_ind_tbl = rte_flow->ind_table,
+ },
+ .port_num = priv->port,
+ });
+ if (!rte_flow->qp) {
+ rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "cannot allocate QP");
+ goto error;
+ }
+ if (!priv->started)
+ return rte_flow;
+ rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp,
+ rte_flow->ibv_attr);
+ if (!rte_flow->ibv_flow) {
+ rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "flow rule creation failure");
+ goto error;
+ }
+ return rte_flow;
+error:
+ assert(rte_flow);
+ if (rte_flow->qp)
+ ibv_destroy_qp(rte_flow->qp);
+ if (rte_flow->ind_table)
+ ibv_exp_destroy_rwq_ind_table(rte_flow->ind_table);
+ rte_free(rte_flow);
+ return NULL;
+}
+
+/**
+ * Convert a flow.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param[in] attr
+ * Flow rule attributes.
+ * @param[in] pattern
+ * Pattern specification (list terminated by the END pattern item).
+ * @param[in] actions
+ * Associated actions (list terminated by the END action).
+ * @param[out] error
+ * Perform verbose error reporting if not NULL.
+ *
+ * @return
+ * A flow on success, NULL otherwise.
+ */
+static struct rte_flow *
+priv_flow_create(struct priv *priv,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item items[],
+ const struct rte_flow_action actions[],
+ struct rte_flow_error *error)
+{
+ struct rte_flow *rte_flow;
+ struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr), };
+ struct mlx5_flow_action action = {
+ .queue = 0,
+ .drop = 0,
+ .mark = 0,
+ .mark_id = MLX5_FLOW_MARK_DEFAULT,
+ .queues_n = 0,
+ };
+ int err;
+
+ err = priv_flow_validate(priv, attr, items, actions, error, &flow,
+ &action);
+ if (err)
+ goto exit;
+ flow.ibv_attr = rte_malloc(__func__, flow.offset, 0);
+ flow.offset = sizeof(struct ibv_exp_flow_attr);
+ if (!flow.ibv_attr) {
+ rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+ NULL, "cannot allocate ibv_attr memory");
+ goto exit;
+ }
+ *flow.ibv_attr = (struct ibv_exp_flow_attr){
+ .type = IBV_EXP_FLOW_ATTR_NORMAL,
+ .size = sizeof(struct ibv_exp_flow_attr),
+ .priority = attr->priority,
+ .num_of_specs = 0,
+ .port = 0,
+ .flags = 0,
+ .reserved = 0,
+ };
+ flow.inner = 0;
+ flow.hash_fields = 0;
+ claim_zero(priv_flow_validate(priv, attr, items, actions,
+ error, &flow, &action));
+ if (action.mark && !action.drop) {
+ mlx5_flow_create_flag_mark(&flow, action.mark_id);
+ flow.offset += sizeof(struct ibv_exp_flow_spec_action_tag);
+ }
+ if (action.drop)
+ rte_flow =
+ priv_flow_create_action_queue_drop(priv, &flow, error);
+ else
+ rte_flow = priv_flow_create_action_queue(priv, &flow, &action,
+ error);
+ if (!rte_flow)
+ goto exit;
+ return rte_flow;
+exit:
+ rte_free(flow.ibv_attr);
+ return NULL;
+}
+
+/**
+ * Create a flow.
+ *
+ * @see rte_flow_create()
+ * @see rte_flow_ops
+ */
+struct rte_flow *
+mlx5_flow_create(struct rte_eth_dev *dev,
+ const struct rte_flow_attr *attr,
+ const struct rte_flow_item items[],
+ const struct rte_flow_action actions[],
+ struct rte_flow_error *error)
+{
+ struct priv *priv = dev->data->dev_private;
+ struct rte_flow *flow;
+
+ priv_lock(priv);
+ flow = priv_flow_create(priv, attr, items, actions, error);
+ if (flow) {
+ LIST_INSERT_HEAD(&priv->flows, flow, next);
+ DEBUG("Flow created %p", (void *)flow);
+ }
+ priv_unlock(priv);
+ return flow;
+}
+
+/**
+ * Destroy a flow.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param[in] flow
+ * Flow to destroy.
+ */
+static void
+priv_flow_destroy(struct priv *priv,
+ struct rte_flow *flow)
+{
+ (void)priv;
+ LIST_REMOVE(flow, next);
+ if (flow->ibv_flow)
+ claim_zero(ibv_exp_destroy_flow(flow->ibv_flow));
+ if (flow->drop)
+ goto free;
+ if (flow->qp)
+ claim_zero(ibv_destroy_qp(flow->qp));
+ if (flow->ind_table)
+ claim_zero(ibv_exp_destroy_rwq_ind_table(flow->ind_table));
+ if (flow->drop && flow->wq)
+ claim_zero(ibv_exp_destroy_wq(flow->wq));
+ if (flow->drop && flow->cq)
+ claim_zero(ibv_destroy_cq(flow->cq));
+ if (flow->mark) {
+ struct rte_flow *tmp;
+ struct rxq *rxq;
+ uint32_t mark_n = 0;
+ uint32_t queue_n;
+
+ /*
+ * To remove the mark from the queue, the queue must not be
+ * present in any other marked flow (RSS or not).
+ */
+ for (queue_n = 0; queue_n < flow->rxqs_n; ++queue_n) {
+ rxq = flow->rxqs[queue_n];
+ for (tmp = LIST_FIRST(&priv->flows);
+ tmp;
+ tmp = LIST_NEXT(tmp, next)) {
+ uint32_t tqueue_n;
+
+ if (tmp->drop)
+ continue;
+ for (tqueue_n = 0;
+ tqueue_n < tmp->rxqs_n;
+ ++tqueue_n) {
+ struct rxq *trxq;
+
+ trxq = tmp->rxqs[tqueue_n];
+ if (rxq == trxq)
+ ++mark_n;
+ }
+ }
+ rxq->mark = !!mark_n;
+ }
+ }
+free:
+ rte_free(flow->ibv_attr);
+ DEBUG("Flow destroyed %p", (void *)flow);
+ rte_free(flow);
+}
+
+/**
+ * Destroy a flow.
+ *
+ * @see rte_flow_destroy()
+ * @see rte_flow_ops
+ */
+int
+mlx5_flow_destroy(struct rte_eth_dev *dev,
+ struct rte_flow *flow,
+ struct rte_flow_error *error)
+{
+ struct priv *priv = dev->data->dev_private;
+
+ (void)error;
+ priv_lock(priv);
+ priv_flow_destroy(priv, flow);
+ priv_unlock(priv);
+ return 0;
+}
+
+/**
+ * Destroy all flows.
+ *
+ * @param priv
+ * Pointer to private structure.
+ */
+static void
+priv_flow_flush(struct priv *priv)
+{
+ while (!LIST_EMPTY(&priv->flows)) {
+ struct rte_flow *flow;
+
+ flow = LIST_FIRST(&priv->flows);
+ priv_flow_destroy(priv, flow);
+ }
+}
+
+/**
+ * Destroy all flows.
+ *
+ * @see rte_flow_flush()
+ * @see rte_flow_ops
+ */
+int
+mlx5_flow_flush(struct rte_eth_dev *dev,
+ struct rte_flow_error *error)
+{
+ struct priv *priv = dev->data->dev_private;
+
+ (void)error;
+ priv_lock(priv);
+ priv_flow_flush(priv);
+ priv_unlock(priv);
+ return 0;
+}
+
+/**
+ * Create drop queue.
+ *
+ * @param priv
+ * Pointer to private structure.
+ *
+ * @return
+ * 0 on success.
+ */
+static int
+priv_flow_create_drop_queue(struct priv *priv)
+{
+ struct rte_flow_drop *fdq = NULL;
+ unsigned int i;
+
+ assert(priv->pd);
+ assert(priv->ctx);
+ fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0);
+ if (!fdq) {
+ WARN("cannot allocate memory for drop queue");
+ goto error;
+ }
+ fdq->cq = ibv_exp_create_cq(priv->ctx, 1, NULL, NULL, 0,
+ &(struct ibv_exp_cq_init_attr){
+ .comp_mask = 0,
+ });
+ if (!fdq->cq) {
+ WARN("cannot allocate CQ for drop queue");
+ goto error;
+ }
+ for (i = 0; i != MLX5_DROP_WQ_N; ++i) {
+ fdq->wqs[i] = ibv_exp_create_wq(priv->ctx,
+ &(struct ibv_exp_wq_init_attr){
+ .wq_type = IBV_EXP_WQT_RQ,
+ .max_recv_wr = 1,
+ .max_recv_sge = 1,
+ .pd = priv->pd,
+ .cq = fdq->cq,
+ });
+ if (!fdq->wqs[i]) {
+ WARN("cannot allocate WQ for drop queue");
+ goto error;
+ }
+ }
+ fdq->ind_table = ibv_exp_create_rwq_ind_table(priv->ctx,
+ &(struct ibv_exp_rwq_ind_table_init_attr){
+ .pd = priv->pd,
+ .log_ind_tbl_size = 0,
+ .ind_tbl = fdq->wqs,
+ .comp_mask = 0,
+ });
+ if (!fdq->ind_table) {
+ WARN("cannot allocate indirection table for drop queue");
+ goto error;
+ }
+ fdq->qp = ibv_exp_create_qp(priv->ctx,
+ &(struct ibv_exp_qp_init_attr){
+ .qp_type = IBV_QPT_RAW_PACKET,
+ .comp_mask =
+ IBV_EXP_QP_INIT_ATTR_PD |
+ IBV_EXP_QP_INIT_ATTR_PORT |
+ IBV_EXP_QP_INIT_ATTR_RX_HASH,
+ .pd = priv->pd,
+ .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){
+ .rx_hash_function =
+ IBV_EXP_RX_HASH_FUNC_TOEPLITZ,
+ .rx_hash_key_len = rss_hash_default_key_len,
+ .rx_hash_key = rss_hash_default_key,
+ .rx_hash_fields_mask = 0,
+ .rwq_ind_tbl = fdq->ind_table,
+ },
+ .port_num = priv->port,
+ });
+ if (!fdq->qp) {
+ WARN("cannot allocate QP for drop queue");
+ goto error;
+ }
+ priv->flow_drop_queue = fdq;
+ return 0;
+error:
+ if (fdq->qp)
+ claim_zero(ibv_destroy_qp(fdq->qp));
+ if (fdq->ind_table)
+ claim_zero(ibv_exp_destroy_rwq_ind_table(fdq->ind_table));
+ for (i = 0; i != MLX5_DROP_WQ_N; ++i) {
+ if (fdq->wqs[i])
+ claim_zero(ibv_exp_destroy_wq(fdq->wqs[i]));
+ }
+ if (fdq->cq)
+ claim_zero(ibv_destroy_cq(fdq->cq));
+ if (fdq)
+ rte_free(fdq);
+ priv->flow_drop_queue = NULL;
+ return -1;
+}
+
+/**
+ * Delete drop queue.
+ *
+ * @param priv
+ * Pointer to private structure.
+ */
+static void
+priv_flow_delete_drop_queue(struct priv *priv)
+{
+ struct rte_flow_drop *fdq = priv->flow_drop_queue;
+ unsigned int i;
+
+ if (!fdq)
+ return;
+ if (fdq->qp)
+ claim_zero(ibv_destroy_qp(fdq->qp));
+ if (fdq->ind_table)
+ claim_zero(ibv_exp_destroy_rwq_ind_table(fdq->ind_table));
+ for (i = 0; i != MLX5_DROP_WQ_N; ++i) {
+ if (fdq->wqs[i])
+ claim_zero(ibv_exp_destroy_wq(fdq->wqs[i]));
+ }
+ if (fdq->cq)
+ claim_zero(ibv_destroy_cq(fdq->cq));
+ rte_free(fdq);
+ priv->flow_drop_queue = NULL;
+}
+
+/**
+ * Remove all flows.
+ *
+ * Called by dev_stop() to remove all flows.
+ *
+ * @param priv
+ * Pointer to private structure.
+ */
+void
+priv_flow_stop(struct priv *priv)
+{
+ struct rte_flow *flow;
+
+ for (flow = LIST_FIRST(&priv->flows);
+ flow;
+ flow = LIST_NEXT(flow, next)) {
+ claim_zero(ibv_exp_destroy_flow(flow->ibv_flow));
+ flow->ibv_flow = NULL;
+ if (flow->mark) {
+ unsigned int n;
+
+ for (n = 0; n < flow->rxqs_n; ++n)
+ flow->rxqs[n]->mark = 0;
+ }
+ DEBUG("Flow %p removed", (void *)flow);
+ }
+ priv_flow_delete_drop_queue(priv);
+}
+
+/**
+ * Add all flows.
+ *
+ * @param priv
+ * Pointer to private structure.
+ *
+ * @return
+ * 0 on success, a errno value otherwise and rte_errno is set.
+ */
+int
+priv_flow_start(struct priv *priv)
+{
+ int ret;
+ struct rte_flow *flow;
+
+ ret = priv_flow_create_drop_queue(priv);
+ if (ret)
+ return -1;
+ for (flow = LIST_FIRST(&priv->flows);
+ flow;
+ flow = LIST_NEXT(flow, next)) {
+ struct ibv_qp *qp;
+
+ if (flow->drop)
+ qp = priv->flow_drop_queue->qp;
+ else
+ qp = flow->qp;
+ flow->ibv_flow = ibv_exp_create_flow(qp, flow->ibv_attr);
+ if (!flow->ibv_flow) {
+ DEBUG("Flow %p cannot be applied", (void *)flow);
+ rte_errno = EINVAL;
+ return rte_errno;
+ }
+ DEBUG("Flow %p applied", (void *)flow);
+ if (flow->mark) {
+ unsigned int n;
+
+ for (n = 0; n < flow->rxqs_n; ++n)
+ flow->rxqs[n]->mark = 1;
+ }
+ }
+ return 0;
+}
+
+/**
+ * Verify if the Rx queue is used in a flow.
+ *
+ * @param priv
+ * Pointer to private structure.
+ * @param rxq
+ * Pointer to the queue to search.
+ *
+ * @return
+ * Nonzero if the queue is used by a flow.
+ */
+int
+priv_flow_rxq_in_use(struct priv *priv, struct rxq *rxq)
+{
+ struct rte_flow *flow;
+
+ for (flow = LIST_FIRST(&priv->flows);
+ flow;
+ flow = LIST_NEXT(flow, next)) {
+ unsigned int n;
+
+ if (flow->drop)
+ continue;
+ for (n = 0; n < flow->rxqs_n; ++n) {
+ if (flow->rxqs[n] == rxq)
+ return 1;
+ }
+ }
+ return 0;
+}
Code Review / deb_dpdk.git / blobdiff