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/* SPDX-License-Identifier: MIT */
/*
* Description: test ring messaging command
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "liburing.h"
#include "helpers.h"
static int no_msg;
static int test(struct io_uring *ring, unsigned dst_flags)
{
struct io_uring_params p = { };
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
struct io_uring dst;
int ret, i, err_ret = T_EXIT_FAIL;
p.flags = dst_flags | IORING_SETUP_CQSIZE;
p.cq_entries = 4;
ret = io_uring_queue_init_params(4, &dst, &p);
if (ret) {
fprintf(stderr, "Destination ring create failed %d\n", ret);
return T_EXIT_FAIL;
}
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_msg_ring(sqe, dst.ring_fd, 0x10, 0x1234, 0);
sqe->user_data = i + 1;
}
ret = io_uring_submit(ring);
if (ret != 8) {
/*
* Likely an old kernel that doesn't support the opcode,
* just skip the test.
*/
if (ret == 1) {
err_ret = T_EXIT_SKIP;
no_msg = 1;
goto err;
}
fprintf(stderr, "sqe submit failed: %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;
}
switch (cqe->user_data) {
case 1 ... 8:
if (cqe->res == -EINVAL || cqe->res == -EOPNOTSUPP) {
no_msg = 1;
goto out;
}
if (cqe->res != 0) {
fprintf(stderr, "cqe res %d\n", cqe->res);
goto err;
}
break;
case 0x1234:
if (cqe->res != 0x10) {
fprintf(stderr, "invalid len %x\n", cqe->res);
goto err;
}
break;
default:
fprintf(stderr, "Invalid user_data\n");
goto err;
}
io_uring_cqe_seen(ring, cqe);
}
for (i = 0; i < 8; i++) {
ret = io_uring_wait_cqe(&dst, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
switch (cqe->user_data) {
case 0x1234:
if (cqe->res != 0x10) {
fprintf(stderr, "invalid len %x\n", cqe->res);
goto err;
}
break;
default:
fprintf(stderr, "Invalid user_data\n");
goto err;
}
io_uring_cqe_seen(&dst, cqe);
}
out:
io_uring_queue_exit(&dst);
return no_msg ? T_EXIT_SKIP : T_EXIT_PASS;
err:
io_uring_queue_exit(&dst);
return err_ret;
}
int main(int argc, char *argv[])
{
struct io_uring src;
int ret;
if (argc > 1)
return T_EXIT_SKIP;
ret = io_uring_queue_init(8, &src, 0);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return T_EXIT_FAIL;
}
ret = test(&src, 0);
if (ret && !no_msg) {
fprintf(stderr, "test failed\n");
return ret;
}
if (no_msg)
return T_EXIT_SKIP;
ret = test(&src, IORING_SETUP_IOPOLL);
if (ret) {
fprintf(stderr, "test IOPOLL failed\n");
return ret;
}
ret = test(&src, IORING_SETUP_DEFER_TASKRUN | IORING_SETUP_SINGLE_ISSUER);
if (ret) {
fprintf(stderr, "test defer failed\n");
return ret;
}
ret = test(&src, IORING_SETUP_DEFER_TASKRUN | IORING_SETUP_SINGLE_ISSUER | IORING_SETUP_IOPOLL);
if (ret) {
fprintf(stderr, "test defer IOPOLL failed\n");
return ret;
}
return T_EXIT_PASS;
}
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