Add cross-link

1 files changed, 334 insertions, 0 deletions

diff --git a/contrib/libs/liburing/test/send_recv.c b/contrib/libs/liburing/test/send_recv.c
new file mode 100644
index 0000000000..5200494a6c
--- /dev/null
+++ b/contrib/libs/liburing/test/send_recv.c
@@ -0,0 +1,334 @@
+#include "../config-host.h"
+/* SPDX-License-Identifier: MIT */
+/*
+ * Simple test case showing using send and recv through io_uring
+ */
+#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"
+
+static char str[] = "This is a test of send and recv over io_uring!";
+
+#define MAX_MSG	128
+
+#define PORT	10202
+#define HOST	"127.0.0.1"
+
+static int recv_prep(struct io_uring *ring, struct iovec *iov, int *sock,
+		     int registerfiles)
+{
+	struct sockaddr_in saddr;
+	struct io_uring_sqe *sqe;
+	int sockfd, ret, val, use_fd;
+
+	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;
+	}
+
+	val = 1;
+	setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
+
+	ret = bind(sockfd, (struct sockaddr *)&saddr, sizeof(saddr));
+	if (ret < 0) {
+		perror("bind");
+		goto err;
+	}
+
+	if (registerfiles) {
+		ret = io_uring_register_files(ring, &sockfd, 1);
+		if (ret) {
+			fprintf(stderr, "file reg failed\n");
+			goto err;
+		}
+		use_fd = 0;
+	} else {
+		use_fd = sockfd;
+	}
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_recv(sqe, use_fd, iov->iov_base, iov->iov_len, 0);
+	if (registerfiles)
+		sqe->flags |= IOSQE_FIXED_FILE;
+	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 iovec *iov)
+{
+	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 -1 != strlen(str)) {
+		fprintf(stderr, "got wrong length: %d/%d\n", cqe->res,
+							(int) strlen(str) + 1);
+		goto err;
+	}
+
+	if (strcmp(str, iov->iov_base)) {
+		fprintf(stderr, "string mismatch\n");
+		goto err;
+	}
+
+	return 0;
+err:
+	return 1;
+}
+
+struct recv_data {
+	pthread_mutex_t mutex;
+	int use_sqthread;
+	int registerfiles;
+};
+
+static void *recv_fn(void *data)
+{
+	struct recv_data *rd = data;
+	char buf[MAX_MSG + 1];
+	struct iovec iov = {
+		.iov_base = buf,
+		.iov_len = sizeof(buf) - 1,
+	};
+	struct io_uring_params p = { };
+	struct io_uring ring;
+	int ret, sock;
+
+	if (rd->use_sqthread)
+		p.flags = IORING_SETUP_SQPOLL;
+	ret = t_create_ring_params(1, &ring, &p);
+	if (ret == T_SETUP_SKIP) {
+		pthread_mutex_unlock(&rd->mutex);
+		ret = 0;
+		goto err;
+	} else if (ret < 0) {
+		pthread_mutex_unlock(&rd->mutex);
+		goto err;
+	}
+
+	if (rd->use_sqthread && !rd->registerfiles) {
+		if (!(p.features & IORING_FEAT_SQPOLL_NONFIXED)) {
+			fprintf(stdout, "Non-registered SQPOLL not available, skipping\n");
+			pthread_mutex_unlock(&rd->mutex);
+			goto err;
+		}
+	}
+
+	ret = recv_prep(&ring, &iov, &sock, rd->registerfiles);
+	if (ret) {
+		fprintf(stderr, "recv_prep failed: %d\n", ret);
+		goto err;
+	}
+	pthread_mutex_unlock(&rd->mutex);
+	ret = do_recv(&ring, &iov);
+
+	close(sock);
+	io_uring_queue_exit(&ring);
+err:
+	return (void *)(intptr_t)ret;
+}
+
+static int do_send(void)
+{
+	struct sockaddr_in saddr;
+	struct iovec iov = {
+		.iov_base = str,
+		.iov_len = sizeof(str),
+	};
+	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) {
+		fprintf(stderr, "queue init failed: %d\n", ret);
+		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);
+
+	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;
+	}
+
+	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;
+	}
+
+	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;
+	}
+
+	close(sockfd);
+	return 0;
+err:
+	close(sockfd);
+	return 1;
+}
+
+static int test(int use_sqthread, int regfiles)
+{
+	pthread_mutexattr_t attr;
+	pthread_t recv_thread;
+	struct recv_data rd;
+	int ret;
+	void *retval;
+
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_setpshared(&attr, 1);
+	pthread_mutex_init(&rd.mutex, &attr);
+	pthread_mutex_lock(&rd.mutex);
+	rd.use_sqthread = use_sqthread;
+	rd.registerfiles = regfiles;
+
+	ret = pthread_create(&recv_thread, NULL, recv_fn, &rd);
+	if (ret) {
+		fprintf(stderr, "Thread create failed: %d\n", ret);
+		pthread_mutex_unlock(&rd.mutex);
+		return 1;
+	}
+
+	pthread_mutex_lock(&rd.mutex);
+	do_send();
+	pthread_join(recv_thread, &retval);
+	return (intptr_t)retval;
+}
+
+static int test_invalid(void)
+{
+	struct io_uring ring;
+	int ret, i;
+	int fds[2];
+	struct io_uring_cqe *cqe;
+	struct io_uring_sqe *sqe;
+
+	ret = t_create_ring(8, &ring, 0);
+	if (ret)
+		return ret;
+
+	ret = t_create_socket_pair(fds, true);
+	if (ret)
+		return ret;
+
+	sqe = io_uring_get_sqe(&ring);
+	io_uring_prep_sendmsg(sqe, fds[0], NULL, MSG_WAITALL);
+	sqe->flags |= IOSQE_ASYNC;
+
+	sqe = io_uring_get_sqe(&ring);
+	io_uring_prep_recvmsg(sqe, fds[1], NULL, 0);
+	sqe->flags |= IOSQE_ASYNC;
+
+	ret = io_uring_submit_and_wait(&ring, 2);
+	if (ret != 2)
+		return ret;
+
+	for (i = 0; i < 2; i++) {
+		ret = io_uring_peek_cqe(&ring, &cqe);
+		if (ret || cqe->res != -EFAULT)
+			return -1;
+		io_uring_cqe_seen(&ring, cqe);
+	}
+
+	io_uring_queue_exit(&ring);
+	close(fds[0]);
+	close(fds[1]);
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	int ret;
+
+	if (argc > 1)
+		return 0;
+
+	ret = test_invalid();
+	if (ret) {
+		fprintf(stderr, "test_invalid failed\n");
+		return ret;
+	}
+
+	ret = test(0, 0);
+	if (ret) {
+		fprintf(stderr, "test sqthread=0 failed\n");
+		return ret;
+	}
+
+	ret = test(1, 1);
+	if (ret) {
+		fprintf(stderr, "test sqthread=1 reg=1 failed\n");
+		return ret;
+	}
+
+	ret = test(1, 0);
+	if (ret) {
+		fprintf(stderr, "test sqthread=1 reg=0 failed\n");
+		return ret;
+	}
+
+	return 0;
+}