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#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
/*
* Test MSG_WAITALL with datagram sockets, with a send splice into two.
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <pthread.h>
#include "liburing.h"
#include "helpers.h"
#define MAX_MSG 128
#define HOST "127.0.0.1"
static __be16 bind_port;
struct recv_data {
pthread_barrier_t barrier;
int use_recvmsg;
struct msghdr msg;
};
static int recv_prep(struct io_uring *ring, struct iovec *iov, int *sock,
struct recv_data *rd)
{
struct sockaddr_in saddr;
struct io_uring_sqe *sqe;
int sockfd, ret, val;
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd < 0) {
perror("socket");
return 1;
}
val = 1;
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
if (t_bind_ephemeral_port(sockfd, &saddr)) {
perror("bind");
goto err;
}
bind_port = saddr.sin_port;
sqe = io_uring_get_sqe(ring);
if (!rd->use_recvmsg) {
io_uring_prep_recv(sqe, sockfd, iov->iov_base, iov->iov_len,
MSG_WAITALL);
} else {
struct msghdr *msg = &rd->msg;
memset(msg, 0, sizeof(*msg));
msg->msg_namelen = sizeof(struct sockaddr_in);
msg->msg_iov = iov;
msg->msg_iovlen = 1;
io_uring_prep_recvmsg(sqe, sockfd, msg, MSG_WAITALL);
}
sqe->user_data = 2;
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "submit failed: %d\n", ret);
goto err;
}
*sock = sockfd;
return 0;
err:
close(sockfd);
return 1;
}
static int do_recv(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
int ret;
ret = io_uring_wait_cqe(ring, &cqe);
if (ret) {
fprintf(stdout, "wait_cqe: %d\n", ret);
goto err;
}
if (cqe->res == -EINVAL) {
fprintf(stdout, "recv not supported, skipping\n");
return 0;
}
if (cqe->res < 0) {
fprintf(stderr, "failed cqe: %d\n", cqe->res);
goto err;
}
if (cqe->res != MAX_MSG * sizeof(int) / 2) {
fprintf(stderr, "got wrong length: %d\n", cqe->res);
goto err;
}
io_uring_cqe_seen(ring, cqe);
return 0;
err:
return 1;
}
static void *recv_fn(void *data)
{
struct recv_data *rd = data;
int buf[MAX_MSG];
struct iovec iov = {
.iov_base = buf,
.iov_len = sizeof(buf),
};
struct io_uring_params p = { };
struct io_uring ring;
int ret, sock;
ret = t_create_ring_params(1, &ring, &p);
if (ret == T_SETUP_SKIP) {
pthread_barrier_wait(&rd->barrier);
ret = 0;
goto err;
} else if (ret < 0) {
pthread_barrier_wait(&rd->barrier);
goto err;
}
ret = recv_prep(&ring, &iov, &sock, rd);
if (ret) {
fprintf(stderr, "recv_prep failed: %d\n", ret);
goto err;
}
pthread_barrier_wait(&rd->barrier);
ret = do_recv(&ring);
close(sock);
io_uring_queue_exit(&ring);
err:
return (void *)(intptr_t)ret;
}
static int do_send(void)
{
struct sockaddr_in saddr;
struct io_uring ring;
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int sockfd, ret, i;
struct iovec iov;
int *buf;
ret = io_uring_queue_init(2, &ring, 0);
if (ret) {
fprintf(stderr, "queue init failed: %d\n", ret);
return 1;
}
buf = malloc(MAX_MSG * sizeof(int));
for (i = 0; i < MAX_MSG; i++)
buf[i] = i;
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_port = bind_port;
inet_pton(AF_INET, HOST, &saddr.sin_addr);
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd < 0) {
perror("socket");
return 1;
}
ret = connect(sockfd, (struct sockaddr *)&saddr, sizeof(saddr));
if (ret < 0) {
perror("connect");
return 1;
}
iov.iov_base = buf;
iov.iov_len = MAX_MSG * sizeof(int) / 2;
for (i = 0; i < 2; i++) {
sqe = io_uring_get_sqe(&ring);
io_uring_prep_send(sqe, sockfd, iov.iov_base, iov.iov_len, 0);
sqe->user_data = 1;
ret = io_uring_submit(&ring);
if (ret <= 0) {
fprintf(stderr, "submit failed: %d\n", ret);
goto err;
}
usleep(10000);
iov.iov_base += iov.iov_len;
}
for (i = 0; i < 2; i++) {
ret = io_uring_wait_cqe(&ring, &cqe);
if (cqe->res == -EINVAL) {
fprintf(stdout, "send not supported, skipping\n");
close(sockfd);
return 0;
}
if (cqe->res != iov.iov_len) {
fprintf(stderr, "failed cqe: %d\n", cqe->res);
goto err;
}
io_uring_cqe_seen(&ring, cqe);
}
close(sockfd);
return 0;
err:
close(sockfd);
return 1;
}
static int test(int use_recvmsg)
{
pthread_t recv_thread;
struct recv_data rd;
int ret;
void *retval;
pthread_barrier_init(&rd.barrier, NULL, 2);
rd.use_recvmsg = use_recvmsg;
ret = pthread_create(&recv_thread, NULL, recv_fn, &rd);
if (ret) {
fprintf(stderr, "Thread create failed: %d\n", ret);
return 1;
}
pthread_barrier_wait(&rd.barrier);
do_send();
pthread_join(recv_thread, &retval);
pthread_barrier_destroy(&rd.barrier);
return (intptr_t)retval;
}
int main(int argc, char *argv[])
{
int ret;
if (argc > 1)
return 0;
ret = test(0);
if (ret) {
fprintf(stderr, "test recv failed\n");
return ret;
}
ret = test(1);
if (ret) {
fprintf(stderr, "test recvmsg failed\n");
return ret;
}
return 0;
}
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