Function await_hw

dpdk/app/test/test_dmadev.c:92–109

}

static void
await_hw(int16_t dev_id, uint16_t vchan)
{
	enum rte_dma_vchan_status st;

	if (rte_dma_vchan_status(dev_id, vchan, &st) < 0) {
		/* for drivers that don't support this op, just sleep for 1 millisecond */
		rte_delay_us_sleep(1000);
		return;
	}

	/* for those that do, *max* end time is one second from now, but all should be faster */
	const uint64_t end_cycles = rte_get_timer_cycles() + rte_get_timer_hz();
	while (st == RTE_DMA_VCHAN_ACTIVE && rte_get_timer_cycles() < end_cycles) {
		rte_pause();
		rte_dma_vchan_status(dev_id, vchan, &st);
	}
}

/* run a series of copy tests just using some different options for enqueues and completions */
static int