Function ena_xstats_get

dpdk/drivers/net/ena/ena_ethdev.c:3441–3510

* DPDK callback to get extended device statistics. * * @param dev * Pointer to Ethernet device structure. * @param[out] stats * Stats table output buffer. * @param n * The size of the stats table. * * @return * Number of xstats on success, negative on failure. */

 *   Number of xstats on success, negative on failure.
 */
static int ena_xstats_get(struct rte_eth_dev *dev,
			  struct rte_eth_xstat *xstats,
			  unsigned int n)
{
	struct ena_adapter *adapter = dev->data->dev_private;
	unsigned int xstats_count = ena_xstats_calc_num(dev->data);
	unsigned int stat, i, count = 0;
	int stat_offset;
	void *stats_begin;
	uint64_t metrics_stats[ENA_MAX_CUSTOMER_METRICS];
	struct ena_stats_srd srd_info = {0};

	if (n < xstats_count)
		return xstats_count;

	if (!xstats)
		return 0;

	for (stat = 0; stat < ENA_STATS_ARRAY_GLOBAL; stat++, count++) {
		stat_offset = ena_stats_global_strings[stat].stat_offset;
		stats_begin = &adapter->dev_stats;

		xstats[count].id = count;
		xstats[count].value = *((uint64_t *)
			((char *)stats_begin + stat_offset));
	}

	ena_copy_customer_metrics(adapter, metrics_stats, adapter->metrics_num);
	stats_begin = metrics_stats;
	for (stat = 0; stat < adapter->metrics_num; stat++, count++) {
		stat_offset = ena_stats_metrics_strings[stat].stat_offset;

		xstats[count].id = count;
		xstats[count].value = *((uint64_t *)
		    ((char *)stats_begin + stat_offset));
	}

	ena_copy_ena_srd_info(adapter, &srd_info);
	stats_begin = &srd_info;
	for (stat = 0; stat < ENA_STATS_ARRAY_ENA_SRD; stat++, count++) {
		stat_offset = ena_stats_srd_strings[stat].stat_offset;
		xstats[count].id = count;
		xstats[count].value = *((uint64_t *)
		    ((char *)stats_begin + stat_offset));
	}

	for (stat = 0; stat < ENA_STATS_ARRAY_RX; stat++) {
		for (i = 0; i < dev->data->nb_rx_queues; i++, count++) {
			stat_offset = ena_stats_rx_strings[stat].stat_offset;
			stats_begin = &adapter->rx_ring[i].rx_stats;

			xstats[count].id = count;
			xstats[count].value = *((uint64_t *)
				((char *)stats_begin + stat_offset));
		}
	}

	for (stat = 0; stat < ENA_STATS_ARRAY_TX; stat++) {