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/* 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) {
printf("zero sized cq ring succeeded\n");
io_uring_queue_exit(&ring);
goto err;
}
if (ret != -EINVAL) {
printf("io_uring_queue_init_params failed, but not with -EINVAL"
", returned error %d (%s)\n", ret, strerror(-ret));
goto err;
}
done:
return 0;
err:
return 1;
}
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