net/mlx5: make indirection tables shareable
[dpdk.git] / drivers / net / mlx5 / mlx5_flow.c
index 3504c43..dc9adeb 100644 (file)
@@ -90,16 +90,14 @@ mlx5_flow_create_vxlan(const struct rte_flow_item *item,
 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 ibv_rwq_ind_table *ind_table; /**< Indirection table. */
+       struct mlx5_ind_table_ibv *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. */
-       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 mlx5_rxq_data *rxqs[]; /**< Pointer to the queues array. */
 };
 
 /** Static initializer for items. */
@@ -1089,51 +1087,39 @@ priv_flow_create_action_queue(struct priv *priv,
 {
        struct rte_flow *rte_flow;
        unsigned int i;
-       unsigned int j;
-       const unsigned int wqs_n = 1 << log2above(flow->actions.queues_n);
-       struct ibv_wq *wqs[wqs_n];
 
        assert(priv->pd);
        assert(priv->ctx);
        assert(!flow->actions.drop);
-       rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow) +
-                             sizeof(*rte_flow->rxqs) * flow->actions.queues_n,
-                             0);
+       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;
        }
-       for (i = 0; i < flow->actions.queues_n; ++i) {
-               struct mlx5_rxq_ctrl *rxq;
-
-               rxq = container_of((*priv->rxqs)[flow->actions.queues[i]],
-                                  struct mlx5_rxq_ctrl, rxq);
-               wqs[i] = rxq->wq;
-               rte_flow->rxqs[i] = &rxq->rxq;
-               ++rte_flow->rxqs_n;
-               rxq->rxq.mark |= flow->actions.mark;
-       }
-       /* finalise indirection table. */
-       for (j = 0; i < wqs_n; ++i, ++j) {
-               wqs[i] = wqs[j];
-               if (j == flow->actions.queues_n)
-                       j = 0;
+       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 = ibv_create_rwq_ind_table(
-               priv->ctx,
-               &(struct ibv_rwq_ind_table_init_attr){
-                       .log_ind_tbl_size = log2above(flow->actions.queues_n),
-                       .ind_tbl = wqs,
-                       .comp_mask = 0,
-               });
+       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_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
-                                  NULL, "cannot allocate indirection table");
-               goto error;
+               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->qp = ibv_create_qp_ex(
                priv->ctx,
@@ -1150,7 +1136,7 @@ priv_flow_create_action_queue(struct priv *priv,
                                .rx_hash_key = rss_hash_default_key,
                                .rx_hash_fields_mask = rte_flow->hash_fields,
                        },
-                       .rwq_ind_tbl = rte_flow->ind_table,
+                       .rwq_ind_tbl = rte_flow->ind_table->ind_table,
                        .pd = priv->pd
                });
        if (!rte_flow->qp) {
@@ -1173,7 +1159,7 @@ error:
        if (rte_flow->qp)
                ibv_destroy_qp(rte_flow->qp);
        if (rte_flow->ind_table)
-               ibv_destroy_rwq_ind_table(rte_flow->ind_table);
+               mlx5_priv_ind_table_ibv_release(priv, rte_flow->ind_table);
        rte_free(rte_flow);
        return NULL;
 }
@@ -1290,6 +1276,8 @@ static void
 priv_flow_destroy(struct priv *priv,
                  struct rte_flow *flow)
 {
+       unsigned int i;
+
        TAILQ_REMOVE(&priv->flows, flow, next);
        if (flow->ibv_flow)
                claim_zero(ibv_destroy_flow(flow->ibv_flow));
@@ -1297,40 +1285,36 @@ priv_flow_destroy(struct priv *priv,
                goto free;
        if (flow->qp)
                claim_zero(ibv_destroy_qp(flow->qp));
-       if (flow->ind_table)
-               claim_zero(ibv_destroy_rwq_ind_table(flow->ind_table));
-       if (flow->mark) {
+       for (i = 0; i != flow->ind_table->queues_n; ++i) {
                struct rte_flow *tmp;
-               struct mlx5_rxq_data *rxq;
-               uint32_t mark_n = 0;
-               uint32_t queue_n;
+               struct mlx5_rxq_data *rxq_data =
+                       (*priv->rxqs)[flow->ind_table->queues[i]];
 
                /*
                 * 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 = TAILQ_FIRST(&priv->flows);
-                            tmp;
-                            tmp = TAILQ_NEXT(tmp, next)) {
-                               uint32_t tqueue_n;
+               if (flow->mark) {
+                       int mark = 0;
+
+                       TAILQ_FOREACH(tmp, &priv->flows, next) {
+                               unsigned int j;
 
                                if (tmp->drop)
                                        continue;
-                               for (tqueue_n = 0;
-                                    tqueue_n < tmp->rxqs_n;
-                                    ++tqueue_n) {
-                                       struct mlx5_rxq_data *trxq;
-
-                                       trxq = tmp->rxqs[tqueue_n];
-                                       if (rxq == trxq)
-                                               ++mark_n;
-                               }
+                               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->mark = !!mark_n;
+                       rxq_data->mark = mark;
                }
        }
+       mlx5_priv_ind_table_ibv_release(priv, flow->ind_table);
 free:
        rte_free(flow->ibv_attr);
        DEBUG("Flow destroyed %p", (void *)flow);
@@ -1522,9 +1506,10 @@ priv_flow_stop(struct priv *priv)
                flow->ibv_flow = NULL;
                if (flow->mark) {
                        unsigned int n;
+                       struct mlx5_ind_table_ibv *ind_tbl = flow->ind_table;
 
-                       for (n = 0; n < flow->rxqs_n; ++n)
-                               flow->rxqs[n]->mark = 0;
+                       for (n = 0; n < ind_tbl->queues_n; ++n)
+                               (*priv->rxqs)[ind_tbl->queues[n]]->mark = 0;
                }
                DEBUG("Flow %p removed", (void *)flow);
        }
@@ -1566,39 +1551,10 @@ priv_flow_start(struct priv *priv)
                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 mlx5_rxq_data *rxq)
-{
-       struct rte_flow *flow;
-
-       for (flow = TAILQ_FIRST(&priv->flows);
-            flow;
-            flow = TAILQ_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;
+                       for (n = 0; n < flow->ind_table->queues_n; ++n) {
+                               uint16_t idx = flow->ind_table->queues[n];
+                               (*priv->rxqs)[idx]->mark = 1;
+                       }
                }
        }
        return 0;
@@ -1630,3 +1586,25 @@ mlx5_flow_isolate(struct rte_eth_dev *dev,
        priv_unlock(priv);
        return 0;
 }
+
+/**
+ * Verify the flow list is empty
+ *
+ * @param priv
+ *  Pointer to private structure.
+ *
+ * @return the number of flows not released.
+ */
+int
+priv_flow_verify(struct priv *priv)
+{
+       struct rte_flow *flow;
+       int ret = 0;
+
+       TAILQ_FOREACH(flow, &priv->flows, next) {
+               DEBUG("%p: flow %p still referenced", (void *)priv,
+                     (void *)flow);
+               ++ret;
+       }
+       return ret;
+}