Function flow_dv_prepare

dpdk/drivers/net/mlx5/mlx5_flow_dv.c:8817–8859

* Internal preparation function. Allocates the DV flow size, * this size is constant. * * @param[in] dev * Pointer to the rte_eth_dev structure. * @param[in] attr * Pointer to the flow attributes. * @param[in] items * Pointer to the list of items. * @param[in] actions * Pointer to the list of actions. * @param[out] error * Pointer to the error structure. * * @return * Po

 *   otherwise NULL and rte_errno is set.
 */
static struct mlx5_flow *
flow_dv_prepare(struct rte_eth_dev *dev,
		const struct rte_flow_attr *attr __rte_unused,
		const struct rte_flow_item items[] __rte_unused,
		const struct rte_flow_action actions[] __rte_unused,
		struct rte_flow_error *error)
{
	uint32_t handle_idx = 0;
	struct mlx5_flow *dev_flow;
	struct mlx5_flow_handle *dev_handle;
	struct mlx5_priv *priv = dev->data->dev_private;
	struct mlx5_flow_workspace *wks = mlx5_flow_get_thread_workspace();

	MLX5_ASSERT(wks);
	wks->skip_matcher_reg = 0;
	wks->policy = NULL;
	wks->final_policy = NULL;
	wks->vport_meta_tag = 0;
	/* In case of corrupting the memory. */
	if (wks->flow_idx >= MLX5_NUM_MAX_DEV_FLOWS) {
		rte_flow_error_set(error, ENOSPC,
				   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
				   "not free temporary device flow");
		return NULL;
	}
	dev_handle = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW],
				   &handle_idx);
	if (!dev_handle) {
		rte_flow_error_set(error, ENOMEM,
				   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
				   "not enough memory to create flow handle");
		return NULL;
	}
	MLX5_ASSERT(wks->flow_idx < RTE_DIM(wks->flows));
	dev_flow = &wks->flows[wks->flow_idx++];
	memset(dev_flow, 0, sizeof(*dev_flow));
	dev_flow->handle = dev_handle;
	dev_flow->handle_idx = handle_idx;
	dev_flow->dv.value.size = MLX5_ST_SZ_BYTES(fte_match_param);
	dev_flow->ingress = attr->ingress;
	dev_flow->dv.transfer = attr->transfer;
	return dev_flow;
}

#ifdef RTE_LIBRTE_MLX5_DEBUG
/**