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#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
/*
* Description: Test non-immediate sendmsg completion with non-static iovec
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <pthread.h>
#include "liburing.h"
#include "helpers.h"
/* anything > 1 should be fine, do bigger than FAST_IOV to be sure */
#define IOVS 16
#define INFLIGHT 256
enum {
IS_ACCEPT = 0x89,
IS_SENDMSG = 0x91,
};
struct thread_data {
pthread_t thread;
pthread_barrier_t barrier;
int parent_pid;
};
static void *thread_fn(void *__data)
{
struct thread_data *data = __data;
struct sockaddr_in saddr;
int sockfd, ret;
char msg[64];
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_port = htons(9999);
inet_pton(AF_INET, "127.0.0.1", &saddr.sin_addr);
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
perror("socket");
goto done;
}
ret = connect(sockfd, (struct sockaddr *) &saddr, sizeof(saddr));
if (ret < 0) {
perror("connect");
close(sockfd);
goto done;
}
pthread_barrier_wait(&data->barrier);
do {
usleep(100);
memset(msg, 0, sizeof(msg));
ret = recv(sockfd, msg, sizeof(msg), 0);
} while (ret > 0);
close(sockfd);
done:
kill(data->parent_pid, SIGUSR1);
return NULL;
}
static int queue_sends(struct io_uring *ring, int send_fd, struct thread_data *td, struct msghdr *msghdr)
{
struct io_uring_sqe *sqe;
char buf[64];
int i, ret, sbuf;
struct iovec *iovs = msghdr->msg_iov;
sbuf = 8 * 1024;
ret = setsockopt(send_fd, SOL_SOCKET, SO_SNDBUF, &sbuf, sizeof(sbuf));
if (ret < 0) {
perror("setsockopt");
return 1;
}
memset(buf, 0xaa, sizeof(buf));
for (i = 0; i < IOVS; i++) {
iovs[i].iov_base = buf;
iovs[i].iov_len = sizeof(buf);
}
/* fill send buffer */
for (i = 0;; i++) {
ret = sendmsg(send_fd, msghdr, MSG_DONTWAIT);
if (ret == -1) {
if (errno == EAGAIN)
break;
perror("sendmsg");
return 1;
}
}
/* kick receiver, start sendmsg */
msghdr->msg_iovlen = IOVS;
pthread_barrier_wait(&td->barrier);
for (i = 0; i < INFLIGHT; i++) {
sqe = io_uring_get_sqe(ring);
io_uring_prep_sendmsg(sqe, send_fd, msghdr, 0);
sqe->user_data = IS_SENDMSG;
}
return 0;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct sockaddr_in saddr;
int val, send_fd, ret, sockfd, seen_sends = 0;
struct thread_data td;
struct iovec iovs[IOVS];
struct msghdr msghdr = {
.msg_iov = iovs,
.msg_iovlen = 1,
};
if (argc > 1)
return T_EXIT_SKIP;
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
saddr.sin_port = htons(9999);
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) {
perror("socket");
return T_EXIT_FAIL;
}
val = 1;
setsockopt(sockfd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(val));
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
ret = bind(sockfd, (struct sockaddr *)&saddr, sizeof(saddr));
if (ret < 0) {
perror("bind");
close(sockfd);
return T_EXIT_FAIL;
}
ret = listen(sockfd, 1);
if (ret < 0) {
perror("listen");
close(sockfd);
return T_EXIT_FAIL;
}
ret = io_uring_queue_init(INFLIGHT, &ring, IORING_SETUP_SINGLE_ISSUER |
IORING_SETUP_DEFER_TASKRUN);
if (ret == -EINVAL) {
close(sockfd);
return T_EXIT_SKIP;
}
sqe = io_uring_get_sqe(&ring);
io_uring_prep_multishot_accept(sqe, sockfd, NULL, NULL, 0);
sqe->user_data = IS_ACCEPT;
io_uring_submit(&ring);
/* check for no multishot accept */
ret = io_uring_peek_cqe(&ring, &cqe);
if (!ret && cqe->res == -EINVAL) {
close(sockfd);
return T_EXIT_SKIP;
}
/* start receiver */
td.parent_pid = getpid();
pthread_barrier_init(&td.barrier, NULL, 2);
pthread_create(&td.thread, NULL, thread_fn, &td);
do {
ret = io_uring_submit_and_wait(&ring, 1);
if (ret < 0) {
fprintf(stderr, "submit: %d\n", ret);
break;
}
ret = io_uring_peek_cqe(&ring, &cqe);
if (ret) {
fprintf(stderr, "peek: %d\n", ret);
break;
}
switch (cqe->user_data) {
case IS_ACCEPT:
send_fd = cqe->res;
io_uring_cqe_seen(&ring, cqe);
ret = queue_sends(&ring, send_fd, &td, &msghdr);
if (ret)
exit(T_EXIT_FAIL);
break;
case IS_SENDMSG:
io_uring_cqe_seen(&ring, cqe);
seen_sends++;
if (seen_sends == INFLIGHT)
exit(0);
break;
default:
fprintf(stderr, "got unknown cqe\n");
return T_EXIT_FAIL;
}
} while (1);
return T_EXIT_FAIL;
}
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