Function sw_xstats_update

dpdk/drivers/event/sw/sw_evdev_xstats.c:445–507

}

static int
sw_xstats_update(struct sw_evdev *sw, enum rte_event_dev_xstats_mode mode,
		uint8_t queue_port_id, const uint64_t ids[],
		uint64_t values[], unsigned int n, const uint32_t reset,
		const uint32_t ret_if_n_lt_nstats)
{
	unsigned int i;
	unsigned int xidx = 0;
	RTE_SET_USED(mode);
	RTE_SET_USED(queue_port_id);

	uint32_t xstats_mode_count = 0;

	switch (mode) {
	case RTE_EVENT_DEV_XSTATS_DEVICE:
		xstats_mode_count = sw->xstats_count_mode_dev;
		break;
	case RTE_EVENT_DEV_XSTATS_PORT:
		if (queue_port_id >= (signed int)sw->port_count)
			goto invalid_value;
		xstats_mode_count = sw->xstats_count_per_port[queue_port_id];
		break;
	case RTE_EVENT_DEV_XSTATS_QUEUE:
		if (queue_port_id >= (signed int)sw->qid_count)
			goto invalid_value;
		xstats_mode_count = sw->xstats_count_per_qid[queue_port_id];
		break;
	default:
		SW_LOG_ERR("Invalid mode received in sw_xstats_get()");
		goto invalid_value;
	};

	/* this function can check num stats and return them (xstats_get() style
	 * behaviour) or ignore n for reset() of a single stat style behaviour.
	 */
	if (ret_if_n_lt_nstats && xstats_mode_count > n)
		return xstats_mode_count;

	for (i = 0; i < n && xidx < xstats_mode_count; i++) {
		struct sw_xstats_entry *xs = &sw->xstats[ids[i]];
		if (ids[i] > sw->xstats_count || xs->mode != mode)
			continue;

		if (mode != RTE_EVENT_DEV_XSTATS_DEVICE &&
				queue_port_id != xs->obj_idx)
			continue;

		uint64_t val = xs->fn(sw, xs->obj_idx, xs->stat, xs->extra_arg)
					- xs->reset_value;

		if (values)
			values[xidx] = val;

		if (xs->reset_allowed && reset)
			xs->reset_value += val;

		xidx++;
	}