net/mlx5: add hash Rx queue object
[dpdk.git] / drivers / net / mlx5 / mlx5_flow.c
index dc9adeb..4948882 100644 (file)
@@ -87,17 +87,37 @@ mlx5_flow_create_vxlan(const struct rte_flow_item *item,
                       const void *default_mask,
                       void *data);
 
-struct rte_flow {
-       TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
-       struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
-       struct mlx5_ind_table_ibv *ind_table; /**< Indirection table. */
+/** Structure for Drop queue. */
+struct mlx5_hrxq_drop {
+       struct ibv_rwq_ind_table *ind_table; /**< Indirection table. */
        struct ibv_qp *qp; /**< Verbs queue pair. */
-       struct ibv_flow *ibv_flow; /**< Verbs flow. */
        struct ibv_wq *wq; /**< Verbs work queue. */
        struct ibv_cq *cq; /**< Verbs completion queue. */
+};
+
+/* Flows structures. */
+struct mlx5_flow {
+       uint64_t hash_fields; /**< Fields that participate in the hash. */
+       struct mlx5_hrxq *hrxq; /**< Hash Rx queues. */
+};
+
+/* Drop flows structures. */
+struct mlx5_flow_drop {
+       struct mlx5_hrxq_drop hrxq; /**< Drop hash Rx queue. */
+};
+
+struct rte_flow {
+       TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
        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 ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
+       struct ibv_flow *ibv_flow; /**< Verbs flow. */
+       uint16_t queues_n; /**< Number of entries in queue[]. */
+       uint16_t (*queues)[]; /**< Queues indexes to use. */
+       union {
+               struct mlx5_flow frxq; /**< Flow with Rx queue. */
+               struct mlx5_flow_drop drxq; /**< Flow with drop Rx queue. */
+       };
 };
 
 /** Static initializer for items. */
@@ -288,14 +308,6 @@ struct mlx5_flow_parse {
        struct mlx5_flow_action actions; /**< Parsed action result. */
 };
 
-/** Structure for Drop queue. */
-struct rte_flow_drop {
-       struct ibv_rwq_ind_table *ind_table; /**< Indirection table. */
-       struct ibv_qp *qp; /**< Verbs queue pair. */
-       struct ibv_wq *wq; /**< Verbs work queue. */
-       struct ibv_cq *cq; /**< Verbs completion queue. */
-};
-
 static const struct rte_flow_ops mlx5_flow_ops = {
        .validate = mlx5_flow_validate,
        .create = mlx5_flow_create,
@@ -1052,8 +1064,8 @@ priv_flow_create_action_queue_drop(struct priv *priv,
        rte_flow->ibv_attr = flow->ibv_attr;
        if (!priv->dev->data->dev_started)
                return rte_flow;
-       rte_flow->qp = priv->flow_drop_queue->qp;
-       rte_flow->ibv_flow = ibv_create_flow(rte_flow->qp,
+       rte_flow->drxq.hrxq.qp = priv->flow_drop_queue->qp;
+       rte_flow->ibv_flow = ibv_create_flow(rte_flow->drxq.hrxq.qp,
                                             rte_flow->ibv_attr);
        if (!rte_flow->ibv_flow) {
                rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
@@ -1091,62 +1103,52 @@ priv_flow_create_action_queue(struct priv *priv,
        assert(priv->pd);
        assert(priv->ctx);
        assert(!flow->actions.drop);
-       rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow), 0);
+       rte_flow =
+               rte_calloc(__func__, 1,
+                          sizeof(*flow) +
+                          flow->actions.queues_n * sizeof(uint16_t),
+                          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 != flow->actions.queues_n; ++i) {
-               struct mlx5_rxq_data *q =
-                       (*priv->rxqs)[flow->actions.queues[i]];
-
-               q->mark |= flow->actions.mark;
-       }
        rte_flow->mark = flow->actions.mark;
        rte_flow->ibv_attr = flow->ibv_attr;
-       rte_flow->hash_fields = flow->hash_fields;
-       rte_flow->ind_table =
-               mlx5_priv_ind_table_ibv_get(priv, flow->actions.queues,
-                                           flow->actions.queues_n);
-       if (!rte_flow->ind_table) {
-               rte_flow->ind_table =
-                       mlx5_priv_ind_table_ibv_new(priv, flow->actions.queues,
-                                                   flow->actions.queues_n);
-               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->queues = (uint16_t (*)[])(rte_flow + 1);
+       memcpy(rte_flow->queues, flow->actions.queues,
+              flow->actions.queues_n * sizeof(uint16_t));
+       rte_flow->queues_n = flow->actions.queues_n;
+       rte_flow->frxq.hash_fields = flow->hash_fields;
+       rte_flow->frxq.hrxq = mlx5_priv_hrxq_get(priv, rss_hash_default_key,
+                                                rss_hash_default_key_len,
+                                                flow->hash_fields,
+                                                (*rte_flow->queues),
+                                                rte_flow->queues_n);
+       if (rte_flow->frxq.hrxq) {
+               rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
+                                  NULL, "duplicated flow");
+               goto error;
        }
-       rte_flow->qp = ibv_create_qp_ex(
-               priv->ctx,
-               &(struct ibv_qp_init_attr_ex){
-                       .qp_type = IBV_QPT_RAW_PACKET,
-                       .comp_mask =
-                               IBV_QP_INIT_ATTR_PD |
-                               IBV_QP_INIT_ATTR_IND_TABLE |
-                               IBV_QP_INIT_ATTR_RX_HASH,
-                       .rx_hash_conf = (struct ibv_rx_hash_conf){
-                               .rx_hash_function =
-                                       IBV_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->ind_table,
-                       .pd = priv->pd
-               });
-       if (!rte_flow->qp) {
+       rte_flow->frxq.hrxq = mlx5_priv_hrxq_new(priv, rss_hash_default_key,
+                                                rss_hash_default_key_len,
+                                                flow->hash_fields,
+                                                (*rte_flow->queues),
+                                                rte_flow->queues_n);
+       if (!rte_flow->frxq.hrxq) {
                rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
-                                  NULL, "cannot allocate QP");
+                                  NULL, "cannot create hash rxq");
                goto error;
        }
+       for (i = 0; i != flow->actions.queues_n; ++i) {
+               struct mlx5_rxq_data *q =
+                       (*priv->rxqs)[flow->actions.queues[i]];
+
+               q->mark |= flow->actions.mark;
+       }
        if (!priv->dev->data->dev_started)
                return rte_flow;
-       rte_flow->ibv_flow = ibv_create_flow(rte_flow->qp,
+       rte_flow->ibv_flow = ibv_create_flow(rte_flow->frxq.hrxq->qp,
                                             rte_flow->ibv_attr);
        if (!rte_flow->ibv_flow) {
                rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
@@ -1156,10 +1158,8 @@ priv_flow_create_action_queue(struct priv *priv,
        return rte_flow;
 error:
        assert(rte_flow);
-       if (rte_flow->qp)
-               ibv_destroy_qp(rte_flow->qp);
-       if (rte_flow->ind_table)
-               mlx5_priv_ind_table_ibv_release(priv, rte_flow->ind_table);
+       if (rte_flow->frxq.hrxq)
+               mlx5_priv_hrxq_release(priv, rte_flow->frxq.hrxq);
        rte_free(rte_flow);
        return NULL;
 }
@@ -1277,45 +1277,43 @@ priv_flow_destroy(struct priv *priv,
                  struct rte_flow *flow)
 {
        unsigned int i;
+       uint16_t *queues;
+       uint16_t queues_n;
 
-       TAILQ_REMOVE(&priv->flows, flow, next);
-       if (flow->ibv_flow)
-               claim_zero(ibv_destroy_flow(flow->ibv_flow));
-       if (flow->drop)
+       if (flow->drop || !flow->mark)
                goto free;
-       if (flow->qp)
-               claim_zero(ibv_destroy_qp(flow->qp));
-       for (i = 0; i != flow->ind_table->queues_n; ++i) {
+       queues = flow->frxq.hrxq->ind_table->queues;
+       queues_n = flow->frxq.hrxq->ind_table->queues_n;
+       for (i = 0; i != queues_n; ++i) {
                struct rte_flow *tmp;
-               struct mlx5_rxq_data *rxq_data =
-                       (*priv->rxqs)[flow->ind_table->queues[i]];
+               struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[queues[i]];
+               int mark = 0;
 
                /*
                 * To remove the mark from the queue, the queue must not be
                 * present in any other marked flow (RSS or not).
                 */
-               if (flow->mark) {
-                       int mark = 0;
-
-                       TAILQ_FOREACH(tmp, &priv->flows, next) {
-                               unsigned int j;
-
-                               if (tmp->drop)
-                                       continue;
-                               if (!tmp->mark)
-                                       continue;
-                               for (j = 0;
-                                    (j != tmp->ind_table->queues_n) && !mark;
-                                    j++)
-                                       if (tmp->ind_table->queues[j] ==
-                                           flow->ind_table->queues[i])
-                                               mark = 1;
-                       }
-                       rxq_data->mark = mark;
+               TAILQ_FOREACH(tmp, &priv->flows, next) {
+                       unsigned int j;
+
+                       if (!tmp->mark)
+                               continue;
+                       for (j = 0;
+                            (j != tmp->frxq.hrxq->ind_table->queues_n) &&
+                            !mark;
+                            j++)
+                               if (tmp->frxq.hrxq->ind_table->queues[j] ==
+                                   queues[i])
+                                       mark = 1;
                }
+               rxq_data->mark = mark;
        }
-       mlx5_priv_ind_table_ibv_release(priv, flow->ind_table);
 free:
+       if (flow->ibv_flow)
+               claim_zero(ibv_destroy_flow(flow->ibv_flow));
+       if (!flow->drop)
+               mlx5_priv_hrxq_release(priv, flow->frxq.hrxq);
+       TAILQ_REMOVE(&priv->flows, flow, next);
        rte_free(flow->ibv_attr);
        DEBUG("Flow destroyed %p", (void *)flow);
        rte_free(flow);
@@ -1389,7 +1387,7 @@ mlx5_flow_flush(struct rte_eth_dev *dev,
 static int
 priv_flow_create_drop_queue(struct priv *priv)
 {
-       struct rte_flow_drop *fdq = NULL;
+       struct mlx5_hrxq_drop *fdq = NULL;
 
        assert(priv->pd);
        assert(priv->ctx);
@@ -1472,7 +1470,7 @@ error:
 static void
 priv_flow_delete_drop_queue(struct priv *priv)
 {
-       struct rte_flow_drop *fdq = priv->flow_drop_queue;
+       struct mlx5_hrxq_drop *fdq = priv->flow_drop_queue;
 
        if (!fdq)
                return;
@@ -1504,9 +1502,12 @@ priv_flow_stop(struct priv *priv)
        TAILQ_FOREACH_REVERSE(flow, &priv->flows, mlx5_flows, next) {
                claim_zero(ibv_destroy_flow(flow->ibv_flow));
                flow->ibv_flow = NULL;
+               mlx5_priv_hrxq_release(priv, flow->frxq.hrxq);
+               flow->frxq.hrxq = NULL;
                if (flow->mark) {
                        unsigned int n;
-                       struct mlx5_ind_table_ibv *ind_tbl = flow->ind_table;
+                       struct mlx5_ind_table_ibv *ind_tbl =
+                               flow->frxq.hrxq->ind_table;
 
                        for (n = 0; n < ind_tbl->queues_n; ++n)
                                (*priv->rxqs)[ind_tbl->queues[n]]->mark = 0;
@@ -1535,13 +1536,31 @@ priv_flow_start(struct priv *priv)
        if (ret)
                return -1;
        TAILQ_FOREACH(flow, &priv->flows, next) {
-               struct ibv_qp *qp;
-
-               if (flow->drop)
-                       qp = priv->flow_drop_queue->qp;
-               else
-                       qp = flow->qp;
-               flow->ibv_flow = ibv_create_flow(qp, flow->ibv_attr);
+               if (flow->frxq.hrxq)
+                       goto flow_create;
+               flow->frxq.hrxq =
+                       mlx5_priv_hrxq_get(priv, rss_hash_default_key,
+                                          rss_hash_default_key_len,
+                                          flow->frxq.hash_fields,
+                                          (*flow->queues),
+                                          flow->queues_n);
+               if (flow->frxq.hrxq)
+                       goto flow_create;
+               flow->frxq.hrxq =
+                       mlx5_priv_hrxq_new(priv, rss_hash_default_key,
+                                          rss_hash_default_key_len,
+                                          flow->frxq.hash_fields,
+                                          (*flow->queues),
+                                          flow->queues_n);
+               if (!flow->frxq.hrxq) {
+                       DEBUG("Flow %p cannot be applied",
+                             (void *)flow);
+                       rte_errno = EINVAL;
+                       return rte_errno;
+               }
+flow_create:
+               flow->ibv_flow = ibv_create_flow(flow->frxq.hrxq->qp,
+                                                flow->ibv_attr);
                if (!flow->ibv_flow) {
                        DEBUG("Flow %p cannot be applied", (void *)flow);
                        rte_errno = EINVAL;
@@ -1551,8 +1570,11 @@ priv_flow_start(struct priv *priv)
                if (flow->mark) {
                        unsigned int n;
 
-                       for (n = 0; n < flow->ind_table->queues_n; ++n) {
-                               uint16_t idx = flow->ind_table->queues[n];
+                       for (n = 0;
+                            n < flow->frxq.hrxq->ind_table->queues_n;
+                            ++n) {
+                               uint16_t idx =
+                                       flow->frxq.hrxq->ind_table->queues[n];
                                (*priv->rxqs)[idx]->mark = 1;
                        }
                }