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#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
/*
* Check that repeated IORING_OP_CONNECT to a socket without a listener keeps
* yielding -ECONNREFUSED rather than -ECONNABORTED. Based on a reproducer
* from:
*
* https://github.com/axboe/liburing/issues/828
*
* and adopted to our usual test cases. Other changes made like looping,
* using different ring types, adding a memset() for reuse, etc.
*
*/
#include <stdio.h>
#include <netinet/in.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include "liburing.h"
#include "helpers.h"
static unsigned long ud;
static int init_test_server(struct sockaddr_in *serv_addr)
{
socklen_t servaddr_len = sizeof(struct sockaddr_in);
int fd;
/* Init server socket. Bind but don't listen */
fd = socket(AF_INET, SOCK_STREAM, 0);
if (fd < 0) {
perror("socket");
return -1;
}
serv_addr->sin_family = AF_INET;
serv_addr->sin_addr.s_addr = inet_addr("127.0.0.1");
if (bind(fd, (struct sockaddr *) serv_addr, servaddr_len) < 0) {
perror("bind");
return -1;
}
/*
* Get the addresses the socket is bound to because the port is chosen
* by the network stack.
*/
if (getsockname(fd, (struct sockaddr *)serv_addr, &servaddr_len) < 0) {
perror("getsockname");
return -1;
}
return fd;
}
static int init_test_client(void)
{
socklen_t addr_len = sizeof(struct sockaddr_in);
struct sockaddr_in client_addr = {};
int clientfd;
clientfd = socket(AF_INET, SOCK_STREAM, 0);
if (clientfd < 0) {
perror("socket");
return -1;
}
client_addr.sin_family = AF_INET;
client_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
if (bind(clientfd, (struct sockaddr *)&client_addr, addr_len) < 0) {
perror("bind");
close(clientfd);
return -1;
}
/*
* Get the addresses the socket is bound to because the port is chosen
* by the network stack.
*/
if (getsockname(clientfd, (struct sockaddr *)&client_addr, &addr_len) < 0) {
perror("getsockname");
close(clientfd);
return -1;
}
return clientfd;
}
static int get_completion_and_print(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
int ret, res;
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait_cqe=%d\n", ret);
return -1;
}
/* Mark this completion as seen */
res = cqe->res;
io_uring_cqe_seen(ring, cqe);
return res;
}
static int test_connect(struct io_uring *ring,
int clientfd, struct sockaddr_in *serv_addr)
{
struct sockaddr_in local_sa;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
io_uring_prep_connect(sqe, clientfd, (const struct sockaddr *)serv_addr,
sizeof(struct sockaddr_in));
sqe->user_data = ++ud;
memcpy(&local_sa, serv_addr, sizeof(local_sa));
ret = io_uring_submit_and_wait(ring, 1);
if (ret != 1) {
fprintf(stderr, "submit=%d\n", ret);
return T_EXIT_FAIL;
}
/* check for reuse at the same time */
memset(&local_sa, 0xff, sizeof(local_sa));
ret = get_completion_and_print(ring);
if (ret != -ECONNREFUSED) {
fprintf(stderr, "Connect got %d\n", ret);
return T_EXIT_FAIL;
}
return T_EXIT_PASS;
}
static int test(int flags)
{
struct io_uring_params params = { .flags = flags, };
struct sockaddr_in serv_addr = {};
struct io_uring ring;
int ret, clientfd, s_fd, i;
if (flags & IORING_SETUP_SQPOLL)
params.sq_thread_idle = 50;
ret = io_uring_queue_init_params(8, &ring, ¶ms);
if (ret < 0) {
fprintf(stderr, "Queue init: %d\n", ret);
return T_EXIT_FAIL;
}
s_fd = init_test_server(&serv_addr);
if (s_fd < 0)
return T_EXIT_FAIL;
clientfd = init_test_client();
if (clientfd < 0) {
close(s_fd);
return T_EXIT_FAIL;
}
/* make sure SQPOLL thread is sleeping */
if (flags & IORING_SETUP_SQPOLL)
usleep(100000);
for (i = 0; i < 32; i++) {
ret = test_connect(&ring, clientfd, &serv_addr);
if (ret == T_EXIT_SKIP)
return T_EXIT_SKIP;
else if (ret == T_EXIT_PASS)
continue;
return T_EXIT_FAIL;
}
close(s_fd);
close(clientfd);
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(0) failed\n");
return T_EXIT_FAIL;
}
ret = test(IORING_SETUP_SQPOLL);
if (ret == T_EXIT_FAIL) {
fprintf(stderr, "test(SQPOLL) failed\n");
return T_EXIT_FAIL;
}
return 0;
}
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