| /* SPDX-License-Identifier: MIT */ |
| #include <assert.h> |
| #include <liburing.h> |
| #include <netdb.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <sys/types.h> |
| #include <syscall.h> |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include "liburing.h" |
| #include "../src/syscall.h" |
| |
| struct io_uring io_uring; |
| |
| int sys_io_uring_enter(const int fd, |
| const unsigned to_submit, |
| const unsigned min_complete, |
| const unsigned flags, sigset_t * const sig) |
| { |
| return __sys_io_uring_enter(fd, to_submit, min_complete, flags, sig); |
| } |
| |
| int submit_sqe(void) |
| { |
| struct io_uring_sq *sq = &io_uring.sq; |
| const unsigned tail = *sq->ktail; |
| |
| sq->array[tail & *sq->kring_mask] = 0; |
| io_uring_smp_store_release(sq->ktail, tail + 1); |
| |
| return sys_io_uring_enter(io_uring.ring_fd, 1, 0, 0, NULL); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| struct addrinfo *addr_info_list = NULL; |
| struct addrinfo *ai, *addr_info = NULL; |
| struct io_uring_params params; |
| struct io_uring_sqe *sqe; |
| struct addrinfo hints; |
| struct sockaddr sa; |
| socklen_t sa_size = sizeof(sa); |
| int ret, listen_fd, connect_fd, val, i; |
| |
| if (argc > 1) |
| return 0; |
| |
| memset(¶ms, 0, sizeof(params)); |
| ret = io_uring_queue_init_params(1024, &io_uring, ¶ms); |
| if (ret) { |
| fprintf(stderr, "io_uring_init_failed: %d\n", ret); |
| return 1; |
| } |
| if (!(params.features & IORING_FEAT_SUBMIT_STABLE)) { |
| fprintf(stdout, "FEAT_SUBMIT_STABLE not there, skipping\n"); |
| return 0; |
| } |
| |
| memset(&hints, 0, sizeof(hints)); |
| hints.ai_family = AF_UNSPEC; |
| hints.ai_socktype = SOCK_STREAM; |
| hints.ai_flags = AI_PASSIVE | AI_NUMERICSERV; |
| |
| ret = getaddrinfo(NULL, "12345", &hints, &addr_info_list); |
| if (ret < 0) { |
| perror("getaddrinfo"); |
| return 1; |
| } |
| |
| for (ai = addr_info_list; ai; ai = ai->ai_next) { |
| if (ai->ai_family == AF_INET || ai->ai_family == AF_INET6) { |
| addr_info = ai; |
| break; |
| } |
| } |
| if (!addr_info) { |
| fprintf(stderr, "addrinfo not found\n"); |
| return 1; |
| } |
| |
| sqe = &io_uring.sq.sqes[0]; |
| listen_fd = -1; |
| |
| ret = socket(addr_info->ai_family, SOCK_STREAM, |
| addr_info->ai_protocol); |
| if (ret < 0) { |
| perror("socket"); |
| return 1; |
| } |
| listen_fd = ret; |
| |
| val = 1; |
| setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(int)); |
| setsockopt(listen_fd, SOL_SOCKET, SO_REUSEPORT, &val, sizeof(int)); |
| |
| ret = bind(listen_fd, addr_info->ai_addr, addr_info->ai_addrlen); |
| if (ret < 0) { |
| perror("bind"); |
| return 1; |
| } |
| |
| ret = listen(listen_fd, SOMAXCONN); |
| if (ret < 0) { |
| perror("listen"); |
| return 1; |
| } |
| |
| memset(&sa, 0, sizeof(sa)); |
| |
| io_uring_prep_accept(sqe, listen_fd, &sa, &sa_size, 0); |
| sqe->user_data = 1; |
| ret = submit_sqe(); |
| if (ret != 1) { |
| fprintf(stderr, "submit failed: %d\n", ret); |
| return 1; |
| } |
| |
| connect_fd = -1; |
| ret = socket(addr_info->ai_family, SOCK_STREAM, addr_info->ai_protocol); |
| if (ret < 0) { |
| perror("socket"); |
| return 1; |
| } |
| connect_fd = ret; |
| |
| io_uring_prep_connect(sqe, connect_fd, addr_info->ai_addr, |
| addr_info->ai_addrlen); |
| sqe->user_data = 2; |
| ret = submit_sqe(); |
| if (ret != 1) { |
| fprintf(stderr, "submit failed: %d\n", ret); |
| return 1; |
| } |
| |
| for (i = 0; i < 2; i++) { |
| struct io_uring_cqe *cqe = NULL; |
| |
| ret = io_uring_wait_cqe(&io_uring, &cqe); |
| if (ret) { |
| fprintf(stderr, "io_uring_wait_cqe: %d\n", ret); |
| return 1; |
| } |
| |
| switch (cqe->user_data) { |
| case 1: |
| if (cqe->res < 0) { |
| fprintf(stderr, "accept failed: %d\n", cqe->res); |
| return 1; |
| } |
| break; |
| case 2: |
| if (cqe->res) { |
| fprintf(stderr, "connect failed: %d\n", cqe->res); |
| return 1; |
| } |
| break; |
| } |
| io_uring_cq_advance(&io_uring, 1); |
| } |
| |
| freeaddrinfo(addr_info_list); |
| io_uring_queue_exit(&io_uring); |
| return 0; |
| } |