+/**
+ * Destroy table hash list and all the root entries per domain.
+ *
+ * @param[in] priv
+ * Pointer to the private device data structure.
+ */
+static void
+mlx5_free_table_hash_list(struct mlx5_priv *priv)
+{
+ struct mlx5_ibv_shared *sh = priv->sh;
+ struct mlx5_flow_tbl_data_entry *tbl_data;
+ union mlx5_flow_tbl_key table_key = {
+ {
+ .table_id = 0,
+ .reserved = 0,
+ .domain = 0,
+ .direction = 0,
+ }
+ };
+ struct mlx5_hlist_entry *pos;
+
+ if (!sh->flow_tbls)
+ return;
+ pos = mlx5_hlist_lookup(sh->flow_tbls, table_key.v64);
+ if (pos) {
+ tbl_data = container_of(pos, struct mlx5_flow_tbl_data_entry,
+ entry);
+ assert(tbl_data);
+ mlx5_hlist_remove(sh->flow_tbls, pos);
+ rte_free(tbl_data);
+ }
+ table_key.direction = 1;
+ pos = mlx5_hlist_lookup(sh->flow_tbls, table_key.v64);
+ if (pos) {
+ tbl_data = container_of(pos, struct mlx5_flow_tbl_data_entry,
+ entry);
+ assert(tbl_data);
+ mlx5_hlist_remove(sh->flow_tbls, pos);
+ rte_free(tbl_data);
+ }
+ table_key.direction = 0;
+ table_key.domain = 1;
+ pos = mlx5_hlist_lookup(sh->flow_tbls, table_key.v64);
+ if (pos) {
+ tbl_data = container_of(pos, struct mlx5_flow_tbl_data_entry,
+ entry);
+ assert(tbl_data);
+ mlx5_hlist_remove(sh->flow_tbls, pos);
+ rte_free(tbl_data);
+ }
+ mlx5_hlist_destroy(sh->flow_tbls, NULL, NULL);
+}
+
+/**
+ * Initialize flow table hash list and create the root tables entry
+ * for each domain.
+ *
+ * @param[in] priv
+ * Pointer to the private device data structure.
+ *
+ * @return
+ * Zero on success, positive error code otherwise.
+ */
+static int
+mlx5_alloc_table_hash_list(struct mlx5_priv *priv)
+{
+ struct mlx5_ibv_shared *sh = priv->sh;
+ char s[MLX5_HLIST_NAMESIZE];
+ int err = 0;
+
+ assert(sh);
+ snprintf(s, sizeof(s), "%s_flow_table", priv->sh->ibdev_name);
+ sh->flow_tbls = mlx5_hlist_create(s, MLX5_FLOW_TABLE_HLIST_ARRAY_SIZE);
+ if (!sh->flow_tbls) {
+ DRV_LOG(ERR, "flow tables with hash creation failed.\n");
+ err = ENOMEM;
+ return err;
+ }
+#ifndef HAVE_MLX5DV_DR
+ /*
+ * In case we have not DR support, the zero tables should be created
+ * because DV expect to see them even if they cannot be created by
+ * RDMA-CORE.
+ */
+ union mlx5_flow_tbl_key table_key = {
+ {
+ .table_id = 0,
+ .reserved = 0,
+ .domain = 0,
+ .direction = 0,
+ }
+ };
+ struct mlx5_flow_tbl_data_entry *tbl_data = rte_zmalloc(NULL,
+ sizeof(*tbl_data), 0);
+
+ if (!tbl_data) {
+ err = ENOMEM;
+ goto error;
+ }
+ tbl_data->entry.key = table_key.v64;
+ err = mlx5_hlist_insert(sh->flow_tbls, &tbl_data->entry);
+ if (err)
+ goto error;
+ rte_atomic32_init(&tbl_data->tbl.refcnt);
+ rte_atomic32_inc(&tbl_data->tbl.refcnt);
+ table_key.direction = 1;
+ tbl_data = rte_zmalloc(NULL, sizeof(*tbl_data), 0);
+ if (!tbl_data) {
+ err = ENOMEM;
+ goto error;
+ }
+ tbl_data->entry.key = table_key.v64;
+ err = mlx5_hlist_insert(sh->flow_tbls, &tbl_data->entry);
+ if (err)
+ goto error;
+ rte_atomic32_init(&tbl_data->tbl.refcnt);
+ rte_atomic32_inc(&tbl_data->tbl.refcnt);
+ table_key.direction = 0;
+ table_key.domain = 1;
+ tbl_data = rte_zmalloc(NULL, sizeof(*tbl_data), 0);
+ if (!tbl_data) {
+ err = ENOMEM;
+ goto error;
+ }
+ tbl_data->entry.key = table_key.v64;
+ err = mlx5_hlist_insert(sh->flow_tbls, &tbl_data->entry);
+ if (err)
+ goto error;
+ rte_atomic32_init(&tbl_data->tbl.refcnt);
+ rte_atomic32_inc(&tbl_data->tbl.refcnt);
+ return err;
+error:
+ mlx5_free_table_hash_list(priv);
+#endif /* HAVE_MLX5DV_DR */
+ return err;
+}
+