Add cross-link

1 files changed, 166 insertions, 0 deletions

diff --git a/contrib/libs/liburing/test/accept-reuse.c b/contrib/libs/liburing/test/accept-reuse.c
new file mode 100644
index 00000000000..fb15ade840f
--- /dev/null
+++ b/contrib/libs/liburing/test/accept-reuse.c
@@ -0,0 +1,166 @@
+#include "../config-host.h"
+/* SPDX-License-Identifier: MIT */
+#include <liburing.h>
+#include <netdb.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+#include "liburing.h"
+#include "helpers.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->ring_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 T_EXIT_SKIP;
+
+	memset(&params, 0, sizeof(params));
+	ret = io_uring_queue_init_params(4, &io_uring, &params);
+	if (ret) {
+		fprintf(stderr, "io_uring_init_failed: %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (!(params.features & IORING_FEAT_SUBMIT_STABLE)) {
+		fprintf(stdout, "FEAT_SUBMIT_STABLE not there, skipping\n");
+		return T_EXIT_SKIP;
+	}
+
+	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 T_EXIT_FAIL;
+	}
+
+	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 T_EXIT_FAIL;
+	}
+
+	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 T_EXIT_FAIL;
+	}
+	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 T_EXIT_FAIL;
+	}
+
+	ret = listen(listen_fd, SOMAXCONN);
+	if (ret < 0) {
+		perror("listen");
+		return T_EXIT_FAIL;
+	}
+
+	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 T_EXIT_FAIL;
+	}
+
+	connect_fd = -1;
+	ret = socket(addr_info->ai_family, SOCK_STREAM, addr_info->ai_protocol);
+	if (ret < 0) {
+		perror("socket");
+		return T_EXIT_FAIL;
+	}
+	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 T_EXIT_FAIL;
+	}
+
+	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 T_EXIT_FAIL;
+		}
+
+		switch (cqe->user_data) {
+		case 1:
+			if (cqe->res < 0) {
+				fprintf(stderr, "accept failed: %d\n", cqe->res);
+				return T_EXIT_FAIL;
+			}
+			break;
+		case 2:
+			if (cqe->res) {
+				fprintf(stderr, "connect failed: %d\n", cqe->res);
+				return T_EXIT_FAIL;
+			}
+			break;
+		}
+		io_uring_cq_advance(&io_uring, 1);
+	}
+
+	freeaddrinfo(addr_info_list);
+	io_uring_queue_exit(&io_uring);
+	return T_EXIT_PASS;
+}