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/*
* Simple test case showing using sendmsg and recvmsg through io_uring
*/
#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 "liburing.h"
static char str[] = "This is a test of sendmsg and recvmsg over io_uring!";
#define MAX_MSG 128
#define PORT 10200
#define HOST "127.0.0.1"
static int do_recvmsg(void)
{
struct sockaddr_in saddr;
char buf[MAX_MSG + 1];
struct msghdr msg;
struct iovec iov = {
.iov_base = buf,
.iov_len = sizeof(buf) - 1,
};
struct io_uring ring;
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int sockfd, ret;
ret = io_uring_queue_init(1, &ring, 0);
if (ret) {
printf("queue init fail\n");
return 1;
}
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
saddr.sin_port = htons(PORT);
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd < 0) {
perror("socket");
return 1;
}
ret = bind(sockfd, (struct sockaddr *)&saddr, sizeof(saddr));
if (ret < 0) {
perror("bind");
goto err;
}
memset(&msg, 0, sizeof(msg));
msg.msg_namelen = sizeof(struct sockaddr_in);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
sqe = io_uring_get_sqe(&ring);
memset(sqe, 0, sizeof(*sqe));
sqe->opcode = IORING_OP_RECVMSG;
sqe->fd = sockfd;
sqe->addr = (uintptr_t) &msg;
sqe->len = 1;
ret = io_uring_submit(&ring);
if (ret <= 0) {
printf("submit failed\n");
goto err;
}
ret = io_uring_wait_cqe(&ring, &cqe);
if (cqe->res < 0) {
printf("failed cqe: %d\n", cqe->res);
goto err;
}
if (cqe->res -1 != strlen(str)) {
printf("got wrong length\n");
goto err;
}
if (strcmp(str, iov.iov_base)) {
printf("string mismatch\n");
goto err;
}
close(sockfd);
return 0;
err:
close(sockfd);
return 1;
}
static int do_sendmsg(void)
{
struct sockaddr_in saddr;
struct iovec iov = {
.iov_base = str,
.iov_len = sizeof(str),
};
struct msghdr msg;
struct io_uring ring;
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int sockfd, ret;
ret = io_uring_queue_init(1, &ring, 0);
if (ret) {
printf("queue init fail\n");
return 1;
}
memset(&saddr, 0, sizeof(saddr));
saddr.sin_family = AF_INET;
saddr.sin_port = htons(PORT);
inet_pton(AF_INET, HOST, &saddr.sin_addr);
memset(&msg, 0, sizeof(msg));
msg.msg_name = &saddr;
msg.msg_namelen = sizeof(struct sockaddr_in);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd < 0) {
perror("socket");
return 1;
}
sqe = io_uring_get_sqe(&ring);
memset(sqe, 0, sizeof(*sqe));
sqe->opcode = IORING_OP_SENDMSG;
sqe->fd = sockfd;
sqe->addr = (uintptr_t) &msg;
sqe->len = 1;
ret = io_uring_submit(&ring);
if (ret <= 0) {
printf("submit failed\n");
goto err;
}
ret = io_uring_wait_cqe(&ring, &cqe);
if (cqe->res < 0) {
printf("failed cqe: %d\n", cqe->res);
goto err;
}
close(sockfd);
return 0;
err:
close(sockfd);
return 1;
}
int main(int argc, char *argv[])
{
pid_t pid;
int ret;
pid = fork();
switch (pid) {
case -1:
printf("fork() failed\n");
return 1;
case 0:
ret = do_sendmsg();
break;
default:
ret = do_recvmsg();
break;
}
return ret;
}
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