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/* SPDX-License-Identifier: MIT */
/*
* Description: run various nop tests
*
*/
#include <stdio.h>
#include "liburing.h"
#include "helpers.h"
#include "test.h"
static int seq;
static int test_single_nop(struct io_uring *ring, bool should_fail)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
return T_EXIT_FAIL;
}
if (should_fail)
io_uring_prep_nop128(sqe);
else
io_uring_prep_nop(sqe);
sqe->user_data = ++seq;
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
return T_EXIT_FAIL;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
} else if (should_fail && cqe->res == 0) {
fprintf(stderr, "Unexpected success\n");
} else if (!should_fail && cqe->res != 0) {
fprintf(stderr, "Completion error:%d\n", cqe->res);
} else if (cqe->res == 0 && cqe->user_data != seq) {
fprintf(stderr, "Unexpected user_data: %ld\n", (long) cqe->user_data);
} else {
io_uring_cqe_seen(ring, cqe);
return T_EXIT_PASS;
}
return T_EXIT_FAIL;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret, i;
if (argc > 1)
return T_EXIT_SKIP;
ret = io_uring_queue_init(8, &ring, IORING_SETUP_SQE_MIXED);
if (ret) {
if (ret == -EINVAL)
return T_EXIT_SKIP;
fprintf(stderr, "ring setup failed: %d\n", ret);
return T_EXIT_FAIL;
}
/* prime the sq to the last entry before wrapping */
for (i = 0; i < 7; i++) {
ret = test_single_nop(&ring, false);
if (ret != T_EXIT_PASS)
goto done;
}
/* inserting a 128b sqe in the last entry should fail */
ret = test_single_nop(&ring, true);
if (ret != T_EXIT_PASS)
goto done;
/* proceeding from the bad wrap should succeed */
ret = test_single_nop(&ring, false);
done:
io_uring_queue_exit(&ring);
return ret;
}
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