/* SPDX-License-Identifier: MIT */

/*

 * Description: test CQ ring sizing

 */

#include <errno.h>

#include <stdio.h>

#include <unistd.h>

#include <stdlib.h>

#include <string.h>

#include <fcntl.h>

#include "liburing.h"

int main(int argc, char *argv[])

{

	struct io_uring_params p;

	struct io_uring ring;

	int ret;

	if (argc > 1)

		return 0;

	memset(&p, 0, sizeof(p));

	p.flags = IORING_SETUP_CQSIZE;

	p.cq_entries = 64;

	ret = io_uring_queue_init_params(4, &ring, &p);

	if (ret) {

		if (ret == -EINVAL) {

			printf("Skipped, not supported on this kernel\n");

			goto done;

		}

		printf("ring setup failed\n");

		return 1;

	}

	if (p.cq_entries < 64) {

		printf("cq entries invalid (%d)\n", p.cq_entries);

		goto err;

	}

	io_uring_queue_exit(&ring);

	memset(&p, 0, sizeof(p));

	p.flags = IORING_SETUP_CQSIZE;

	p.cq_entries = 0;

	ret = io_uring_queue_init_params(4, &ring, &p);

	if (ret >= 0 || errno != EINVAL) {

		printf("zero sized cq ring succeeded\n");

		goto err;

	}

done:

	return 0;

err:

	io_uring_queue_exit(&ring);

	return 1;

}