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/* SPDX-License-Identifier: MIT */
/*
* Description: test ring messaging with flags command
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <pthread.h>
#include "liburing.h"
#include "helpers.h"
#define CUSTOM_FLAG 0x42
#define USER_DATA 0x5aa5
#define LEN 0x20
#define ID 0x1
struct data {
pthread_barrier_t barrier;
int fd;
};
static int recv_msg(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
int ret;
ret = io_uring_wait_cqe(ring, &cqe);
if (ret) {
fprintf(stderr, "wait cqe %d\n", ret);
return T_EXIT_FAIL;
}
if (cqe->user_data != USER_DATA) {
fprintf(stderr, "user_data %llx\n", (long long) cqe->user_data);
return T_EXIT_FAIL;
}
if (cqe->res != LEN) {
fprintf(stderr, "len %x\n", cqe->res);
return T_EXIT_FAIL;
}
if (cqe->flags != CUSTOM_FLAG) {
fprintf(stderr, "flags %x\n", cqe->flags);
return T_EXIT_FAIL;
}
return T_EXIT_PASS;
}
static int send_msg(struct io_uring *ring, int target_fd)
{
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;
}
io_uring_prep_msg_ring_cqe_flags(sqe, target_fd, LEN, USER_DATA,
0, CUSTOM_FLAG);
sqe->user_data = ID;
ret = io_uring_submit(ring);
if (ret <= 0) {
if (ret == -EINVAL)
return T_EXIT_SKIP;
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);
return T_EXIT_FAIL;
}
if (cqe->res != 0) {
if (cqe->res == -EINVAL)
return T_EXIT_SKIP;
fprintf(stderr, "cqe res %d\n", cqe->res);
return T_EXIT_FAIL;
}
if (cqe->user_data != ID) {
fprintf(stderr, "user_data %llx\n", (long long) cqe->user_data);
return T_EXIT_FAIL;
}
io_uring_cqe_seen(ring, cqe);
return T_EXIT_PASS;
}
static void *thread_fn(void *data)
{
struct data *d = data;
struct io_uring ring;
int ret;
ret = io_uring_queue_init(2, &ring, IORING_SETUP_DEFER_TASKRUN | IORING_SETUP_SINGLE_ISSUER);
if (ret) {
fprintf(stderr, "ring init failed %d\n", ret);
pthread_barrier_wait(&d->barrier);
return NULL;
}
d->fd = ring.ring_fd;
pthread_barrier_wait(&d->barrier);
if (recv_msg(&ring))
return (void *) 1;
return NULL;
}
static int test(int ring_flags)
{
struct io_uring ring, ring2;
pthread_t thread;
struct data d;
void *ret2;
int ret, i;
ret = io_uring_queue_init(2, &ring, ring_flags);
if (ret) {
fprintf(stderr, "io_uring_queue_init failed for ring1: %d\n", ret);
return T_EXIT_FAIL;
}
ret = io_uring_queue_init(2, &ring2, ring_flags);
if (ret) {
fprintf(stderr, "io_uring_queue_init failed for ring2: %d\n", ret);
return T_EXIT_FAIL;
}
ret = send_msg(&ring, ring2.ring_fd);
if (ret) {
if (ret != T_EXIT_SKIP)
fprintf(stderr, "send_msg failed: %d\n", ret);
return ret;
}
ret = recv_msg(&ring2);
if (ret) {
fprintf(stderr, "recv_msg failed: %d\n", ret);
return ret;
}
for (i = 0; i < 8; i++) {
ret = send_msg(&ring, ring2.ring_fd);
if (ret) {
if (ret != T_EXIT_SKIP)
fprintf(stderr, "send_msg failed: %d\n", ret);
return ret;
}
}
for (i = 0; i < 8; i++) {
ret = recv_msg(&ring2);
if (ret) {
fprintf(stderr, "recv_msg failed: %d\n", ret);
return ret;
}
}
pthread_barrier_init(&d.barrier, NULL, 2);
d.fd = -1;
pthread_create(&thread, NULL, thread_fn, &d);
pthread_barrier_wait(&d.barrier);
if (d.fd == -1)
return T_EXIT_FAIL;
ret = send_msg(&ring, d.fd);
if (ret) {
fprintf(stderr, "send msg failed: %d\n", ret);
return ret;
}
pthread_join(thread, &ret2);
if (ret2) {
fprintf(stderr, "Remote test failed\n");
return T_EXIT_FAIL;
}
return T_EXIT_PASS;
}
int main(int argc, char *argv[])
{
int ret;
if (argc > 1)
return T_EXIT_SKIP;
ret = test(0);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test ring_flags 0 failed\n");
return ret;
} else if (ret == T_EXIT_SKIP)
return ret;
ret = test(IORING_SETUP_SINGLE_ISSUER|IORING_SETUP_DEFER_TASKRUN);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test ring_flags defer failed\n");
return ret;
}
return ret;
}
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