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/* SPDX-License-Identifier: MIT */
/*
* Description: run various nop tests
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "liburing.h"
#include "test.h"
static int seq;
static int test_nop_inject(struct io_uring *ring, unsigned req_flags)
{
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");
goto err;
}
io_uring_prep_nop(sqe);
sqe->user_data = ++seq;
sqe->nop_flags = IORING_NOP_INJECT_RESULT;
sqe->flags |= req_flags;
sqe->len = -EFAULT;
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (cqe->res != -EINVAL && cqe->res != -EFAULT) {
fprintf(stderr, "expected injected result, got %d\n", cqe->res);
goto err;
}
io_uring_cqe_seen(ring, cqe);
return 0;
err:
return 1;
}
static int test_single_nop(struct io_uring *ring, unsigned req_flags)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
bool cqe32 = (ring->flags & IORING_SETUP_CQE32);
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
sqe->user_data = ++seq;
sqe->flags |= req_flags;
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (!cqe->user_data) {
fprintf(stderr, "Unexpected 0 user_data\n");
goto err;
}
if (cqe32) {
if (cqe->big_cqe[0] != 0) {
fprintf(stderr, "Unexpected extra1\n");
goto err;
}
if (cqe->big_cqe[1] != 0) {
fprintf(stderr, "Unexpected extra2\n");
goto err;
}
}
io_uring_cqe_seen(ring, cqe);
return 0;
err:
return 1;
}
static int test_barrier_nop(struct io_uring *ring, unsigned req_flags)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
bool cqe32 = (ring->flags & IORING_SETUP_CQE32);
for (i = 0; i < 8; i++) {
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_nop(sqe);
if (i == 4)
sqe->flags = IOSQE_IO_DRAIN;
sqe->user_data = ++seq;
sqe->flags |= req_flags;
}
ret = io_uring_submit(ring);
if (ret < 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
} else if (ret < 8) {
fprintf(stderr, "Submitted only %d\n", ret);
goto err;
}
for (i = 0; i < 8; i++) {
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (!cqe->user_data) {
fprintf(stderr, "Unexpected 0 user_data\n");
goto err;
}
if (cqe32) {
if (cqe->big_cqe[0] != 0) {
fprintf(stderr, "Unexpected extra1\n");
goto err;
}
if (cqe->big_cqe[1] != 0) {
fprintf(stderr, "Unexpected extra2\n");
goto err;
}
}
io_uring_cqe_seen(ring, cqe);
}
return 0;
err:
return 1;
}
static int test_ring(unsigned flags)
{
struct io_uring ring;
struct io_uring_params p = { };
int ret, i;
p.flags = flags;
ret = io_uring_queue_init_params(8, &ring, &p);
if (ret) {
if (ret == -EINVAL)
return 0;
fprintf(stderr, "ring setup failed: %d\n", ret);
return 1;
}
for (i = 0; i < 1000; i++) {
unsigned req_flags = (i & 1) ? IOSQE_ASYNC : 0;
ret = test_single_nop(&ring, req_flags);
if (ret) {
fprintf(stderr, "test_single_nop failed\n");
goto err;
}
ret = test_barrier_nop(&ring, req_flags);
if (ret) {
fprintf(stderr, "test_barrier_nop failed\n");
goto err;
}
ret = test_nop_inject(&ring, req_flags);
if (ret) {
fprintf(stderr, "test_nop_inject failed\n");
goto err;
}
}
err:
io_uring_queue_exit(&ring);
return ret;
}
int main(int argc, char *argv[])
{
int ret;
if (argc > 1)
return 0;
FOR_ALL_TEST_CONFIGS {
ret = test_ring(IORING_GET_TEST_CONFIG_FLAGS());
if (ret) {
fprintf(stderr, "Normal ring test failed: %s\n",
IORING_GET_TEST_CONFIG_DESCRIPTION());
return ret;
}
}
return 0;
}
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