![Stefano Garzarella](/assets/img/avatar_default.png)
Test if the MSG_PEEK flags of recv(2) works as expected. Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
380 lines
7.7 KiB
C
380 lines
7.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* vsock_test - vsock.ko test suite
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*
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* Copyright (C) 2017 Red Hat, Inc.
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*
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* Author: Stefan Hajnoczi <stefanha@redhat.com>
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*/
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <linux/kernel.h>
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#include "timeout.h"
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#include "control.h"
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#include "util.h"
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static void test_stream_connection_reset(const struct test_opts *opts)
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{
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union {
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struct sockaddr sa;
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struct sockaddr_vm svm;
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} addr = {
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.svm = {
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.svm_family = AF_VSOCK,
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.svm_port = 1234,
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.svm_cid = opts->peer_cid,
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},
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};
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int ret;
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int fd;
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fd = socket(AF_VSOCK, SOCK_STREAM, 0);
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timeout_begin(TIMEOUT);
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do {
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ret = connect(fd, &addr.sa, sizeof(addr.svm));
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timeout_check("connect");
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} while (ret < 0 && errno == EINTR);
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timeout_end();
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if (ret != -1) {
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fprintf(stderr, "expected connect(2) failure, got %d\n", ret);
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exit(EXIT_FAILURE);
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}
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if (errno != ECONNRESET) {
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fprintf(stderr, "unexpected connect(2) errno %d\n", errno);
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exit(EXIT_FAILURE);
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}
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close(fd);
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}
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static void test_stream_client_close_client(const struct test_opts *opts)
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{
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int fd;
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fd = vsock_stream_connect(opts->peer_cid, 1234);
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if (fd < 0) {
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perror("connect");
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exit(EXIT_FAILURE);
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}
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send_byte(fd, 1, 0);
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close(fd);
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}
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static void test_stream_client_close_server(const struct test_opts *opts)
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{
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int fd;
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fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
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if (fd < 0) {
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perror("accept");
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exit(EXIT_FAILURE);
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}
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/* Wait for the remote to close the connection, before check
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* -EPIPE error on send.
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*/
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vsock_wait_remote_close(fd);
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send_byte(fd, -EPIPE, 0);
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recv_byte(fd, 1, 0);
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recv_byte(fd, 0, 0);
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close(fd);
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}
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static void test_stream_server_close_client(const struct test_opts *opts)
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{
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int fd;
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fd = vsock_stream_connect(opts->peer_cid, 1234);
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if (fd < 0) {
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perror("connect");
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exit(EXIT_FAILURE);
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}
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/* Wait for the remote to close the connection, before check
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* -EPIPE error on send.
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*/
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vsock_wait_remote_close(fd);
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send_byte(fd, -EPIPE, 0);
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recv_byte(fd, 1, 0);
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recv_byte(fd, 0, 0);
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close(fd);
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}
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static void test_stream_server_close_server(const struct test_opts *opts)
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{
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int fd;
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fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
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if (fd < 0) {
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perror("accept");
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exit(EXIT_FAILURE);
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}
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send_byte(fd, 1, 0);
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close(fd);
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}
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/* With the standard socket sizes, VMCI is able to support about 100
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* concurrent stream connections.
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*/
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#define MULTICONN_NFDS 100
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static void test_stream_multiconn_client(const struct test_opts *opts)
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{
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int fds[MULTICONN_NFDS];
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int i;
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for (i = 0; i < MULTICONN_NFDS; i++) {
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fds[i] = vsock_stream_connect(opts->peer_cid, 1234);
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if (fds[i] < 0) {
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perror("connect");
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exit(EXIT_FAILURE);
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}
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}
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for (i = 0; i < MULTICONN_NFDS; i++) {
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if (i % 2)
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recv_byte(fds[i], 1, 0);
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else
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send_byte(fds[i], 1, 0);
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}
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for (i = 0; i < MULTICONN_NFDS; i++)
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close(fds[i]);
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}
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static void test_stream_multiconn_server(const struct test_opts *opts)
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{
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int fds[MULTICONN_NFDS];
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int i;
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for (i = 0; i < MULTICONN_NFDS; i++) {
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fds[i] = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
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if (fds[i] < 0) {
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perror("accept");
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exit(EXIT_FAILURE);
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}
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}
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for (i = 0; i < MULTICONN_NFDS; i++) {
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if (i % 2)
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send_byte(fds[i], 1, 0);
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else
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recv_byte(fds[i], 1, 0);
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}
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for (i = 0; i < MULTICONN_NFDS; i++)
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close(fds[i]);
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}
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static void test_stream_msg_peek_client(const struct test_opts *opts)
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{
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int fd;
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fd = vsock_stream_connect(opts->peer_cid, 1234);
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if (fd < 0) {
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perror("connect");
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exit(EXIT_FAILURE);
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}
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send_byte(fd, 1, 0);
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close(fd);
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}
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static void test_stream_msg_peek_server(const struct test_opts *opts)
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{
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int fd;
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fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
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if (fd < 0) {
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perror("accept");
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exit(EXIT_FAILURE);
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}
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recv_byte(fd, 1, MSG_PEEK);
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recv_byte(fd, 1, 0);
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close(fd);
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}
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static struct test_case test_cases[] = {
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{
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.name = "SOCK_STREAM connection reset",
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.run_client = test_stream_connection_reset,
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},
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{
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.name = "SOCK_STREAM client close",
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.run_client = test_stream_client_close_client,
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.run_server = test_stream_client_close_server,
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},
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{
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.name = "SOCK_STREAM server close",
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.run_client = test_stream_server_close_client,
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.run_server = test_stream_server_close_server,
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},
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{
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.name = "SOCK_STREAM multiple connections",
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.run_client = test_stream_multiconn_client,
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.run_server = test_stream_multiconn_server,
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},
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{
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.name = "SOCK_STREAM MSG_PEEK",
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.run_client = test_stream_msg_peek_client,
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.run_server = test_stream_msg_peek_server,
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},
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{},
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};
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static const char optstring[] = "";
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static const struct option longopts[] = {
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{
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.name = "control-host",
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.has_arg = required_argument,
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.val = 'H',
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},
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{
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.name = "control-port",
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.has_arg = required_argument,
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.val = 'P',
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},
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{
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.name = "mode",
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.has_arg = required_argument,
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.val = 'm',
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},
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{
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.name = "peer-cid",
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.has_arg = required_argument,
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.val = 'p',
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},
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{
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.name = "list",
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.has_arg = no_argument,
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.val = 'l',
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},
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{
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.name = "skip",
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.has_arg = required_argument,
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.val = 's',
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},
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{
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.name = "help",
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.has_arg = no_argument,
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.val = '?',
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},
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{},
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};
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static void usage(void)
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{
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fprintf(stderr, "Usage: vsock_test [--help] [--control-host=<host>] --control-port=<port> --mode=client|server --peer-cid=<cid> [--list] [--skip=<test_id>]\n"
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"\n"
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" Server: vsock_test --control-port=1234 --mode=server --peer-cid=3\n"
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" Client: vsock_test --control-host=192.168.0.1 --control-port=1234 --mode=client --peer-cid=2\n"
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"\n"
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"Run vsock.ko tests. Must be launched in both guest\n"
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"and host. One side must use --mode=client and\n"
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"the other side must use --mode=server.\n"
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"\n"
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"A TCP control socket connection is used to coordinate tests\n"
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"between the client and the server. The server requires a\n"
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"listen address and the client requires an address to\n"
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"connect to.\n"
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"\n"
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"The CID of the other side must be given with --peer-cid=<cid>.\n"
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"\n"
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"Options:\n"
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" --help This help message\n"
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" --control-host <host> Server IP address to connect to\n"
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" --control-port <port> Server port to listen on/connect to\n"
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" --mode client|server Server or client mode\n"
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" --peer-cid <cid> CID of the other side\n"
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" --list List of tests that will be executed\n"
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" --skip <test_id> Test ID to skip;\n"
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" use multiple --skip options to skip more tests\n"
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);
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exit(EXIT_FAILURE);
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}
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int main(int argc, char **argv)
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{
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const char *control_host = NULL;
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const char *control_port = NULL;
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struct test_opts opts = {
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.mode = TEST_MODE_UNSET,
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.peer_cid = VMADDR_CID_ANY,
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};
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init_signals();
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for (;;) {
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int opt = getopt_long(argc, argv, optstring, longopts, NULL);
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if (opt == -1)
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break;
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switch (opt) {
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case 'H':
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control_host = optarg;
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break;
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case 'm':
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if (strcmp(optarg, "client") == 0)
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opts.mode = TEST_MODE_CLIENT;
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else if (strcmp(optarg, "server") == 0)
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opts.mode = TEST_MODE_SERVER;
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else {
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fprintf(stderr, "--mode must be \"client\" or \"server\"\n");
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return EXIT_FAILURE;
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}
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break;
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case 'p':
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opts.peer_cid = parse_cid(optarg);
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break;
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case 'P':
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control_port = optarg;
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break;
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case 'l':
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list_tests(test_cases);
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break;
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case 's':
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skip_test(test_cases, ARRAY_SIZE(test_cases) - 1,
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optarg);
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break;
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case '?':
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default:
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usage();
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}
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}
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if (!control_port)
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usage();
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if (opts.mode == TEST_MODE_UNSET)
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usage();
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if (opts.peer_cid == VMADDR_CID_ANY)
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usage();
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if (!control_host) {
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if (opts.mode != TEST_MODE_SERVER)
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usage();
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control_host = "0.0.0.0";
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}
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control_init(control_host, control_port,
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opts.mode == TEST_MODE_SERVER);
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run_tests(test_cases, &opts);
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control_cleanup();
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return EXIT_SUCCESS;
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}
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