Function test_lcores_callback

dpdk/app/test/test_lcores.c:146–210

}

static int
test_lcores_callback(unsigned int eal_threads_count)
{
	struct limit_lcore_context l;
	void *handle;

	/* Refuse last lcore => callback register error. */
	memset(&l, 0, sizeof(l));
	l.max = eal_threads_count - 1;
	handle = rte_lcore_callback_register("limit", limit_lcores_init,
		limit_lcores_uninit, &l);
	if (handle != NULL) {
		printf("Error: lcore callback register should have failed\n");
		goto error;
	}
	/* Refusal happens at the n th call to the init callback.
	 * Besides, n - 1 were accepted, so we expect as many uninit calls when
	 * the rollback happens.
	 */
	if (l.init != eal_threads_count) {
		printf("Error: lcore callback register failed but incorrect init calls, expected %u, got %u\n",
			eal_threads_count, l.init);
		goto error;
	}
	if (l.uninit != eal_threads_count - 1) {
		printf("Error: lcore callback register failed but incorrect uninit calls, expected %u, got %u\n",
			eal_threads_count - 1, l.uninit);
		goto error;
	}

	/* Accept all lcore and unregister. */
	memset(&l, 0, sizeof(l));
	l.max = eal_threads_count;
	handle = rte_lcore_callback_register("limit", limit_lcores_init,
		limit_lcores_uninit, &l);
	if (handle == NULL) {
		printf("Error: lcore callback register failed\n");
		goto error;
	}
	if (l.uninit != 0) {
		printf("Error: lcore callback register succeeded but incorrect uninit calls, expected 0, got %u\n",
			l.uninit);
		goto error;
	}
	rte_lcore_callback_unregister(handle);
	handle = NULL;
	if (l.init != eal_threads_count) {
		printf("Error: lcore callback unregister done but incorrect init calls, expected %u, got %u\n",
			eal_threads_count, l.init);
		goto error;
	}
	if (l.uninit != eal_threads_count) {
		printf("Error: lcore callback unregister done but incorrect uninit calls, expected %u, got %u\n",
			eal_threads_count, l.uninit);
		goto error;
	}

	return 0;