Function flow_hw_table_create

dpdk/drivers/net/mlx5/mlx5_flow_hw.c:4275–4461

* Create flow table. * * The input item and action templates will be binded to the table. * Flow memory will also be allocated. Matcher will be created based * on the item template. Action will be translated to the dedicated * DR action if possible. * * @param[in] dev * Pointer to the rte_eth_dev structure. * @param[in] table_cfg * Pointer to the table configuration. * @param[in] it

 *    Table on success, NULL otherwise and rte_errno is set.
 */
static struct rte_flow_template_table *
flow_hw_table_create(struct rte_eth_dev *dev,
		     const struct mlx5_flow_template_table_cfg *table_cfg,
		     struct rte_flow_pattern_template *item_templates[],
		     uint8_t nb_item_templates,
		     struct rte_flow_actions_template *action_templates[],
		     uint8_t nb_action_templates,
		     struct rte_flow_error *error)
{
	struct rte_flow_error sub_error = {
		.type = RTE_FLOW_ERROR_TYPE_NONE,
		.cause = NULL,
		.message = NULL,
	};
	struct mlx5_priv *priv = dev->data->dev_private;
	struct mlx5dr_matcher_attr matcher_attr = {0};
	struct rte_flow_template_table *tbl = NULL;
	struct mlx5_flow_group *grp;
	struct mlx5dr_match_template *mt[MLX5_HW_TBL_MAX_ITEM_TEMPLATE];
	struct mlx5dr_action_template *at[MLX5_HW_TBL_MAX_ACTION_TEMPLATE];
	const struct rte_flow_template_table_attr *attr = &table_cfg->attr;
	struct rte_flow_attr flow_attr = attr->flow_attr;
	struct mlx5_flow_cb_ctx ctx = {
		.dev = dev,
		.error = &sub_error,
		.data = &flow_attr,
	};
	struct mlx5_indexed_pool_config cfg = {
		.size = sizeof(struct rte_flow_hw) + mlx5dr_rule_get_handle_size(),
		.trunk_size = 1 << 12,
		.per_core_cache = 1 << 13,
		.need_lock = 1,
		.release_mem_en = !!priv->sh->config.reclaim_mode,
		.malloc = mlx5_malloc,
		.free = mlx5_free,
		.type = "mlx5_hw_table_flow",
	};
	struct mlx5_list_entry *ge;
	uint32_t i = 0, max_tpl = MLX5_HW_TBL_MAX_ITEM_TEMPLATE;
	uint32_t nb_flows = rte_align32pow2(attr->nb_flows);
	bool port_started = !!dev->data->dev_started;
	int err;

	/* HWS layer accepts only 1 item template with root table. */
	if (!attr->flow_attr.group)
		max_tpl = 1;
	cfg.max_idx = nb_flows;
	/* For table has very limited flows, disable cache. */
	if (nb_flows < cfg.trunk_size) {
		cfg.per_core_cache = 0;
		cfg.trunk_size = nb_flows;
	} else if (nb_flows <= MLX5_HW_IPOOL_SIZE_THRESHOLD) {
		cfg.per_core_cache = MLX5_HW_IPOOL_CACHE_MIN;
	}
	/* Check if we requires too many templates. */
	if (nb_item_templates > max_tpl ||
	    nb_action_templates > MLX5_HW_TBL_MAX_ACTION_TEMPLATE) {
		rte_errno = EINVAL;