xref: /freebsd/tools/test/stress2/misc/tcp4.sh (revision 25ecdc7d52770caf1c9b44b5ec11f468f6b636f3) 
1#!/bin/sh
2
3#
4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5#
6# Copyright (c) 2018 Dell EMC Isilon
7#
8# Redistribution and use in source and binary forms, with or without
9# modification, are permitted provided that the following conditions
10# are met:
11# 1. Redistributions of source code must retain the above copyright
12#    notice, this list of conditions and the following disclaimer.
13# 2. Redistributions in binary form must reproduce the above copyright
14#    notice, this list of conditions and the following disclaimer in the
15#    documentation and/or other materials provided with the distribution.
16#
17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27# SUCH DAMAGE.
28#
29
30# "panic: in_pcbrele_wlocked: refcount 0" seen in WiP kernel code.
31
32. ../default.cfg
33[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1
34
35cd /tmp
36
37cat > /tmp/tcp4.c <<EOF
38#include <sys/param.h>
39#include <sys/socket.h>
40#include <sys/wait.h>
41
42#include <netinet/in.h>
43
44#include <err.h>
45#include <errno.h>
46#include <netdb.h>
47#include <signal.h>
48#include <stdio.h>
49#include <stdlib.h>
50#include <string.h>
51#include <time.h>
52#include <unistd.h>
53
54#define NB (400 * 1024 * 1024)
55#define RUNTIME (16 * 60)
56
57static int port;
58static int bufsize;
59
60static int
61random_int(int mi, int ma)
62{
63        return (arc4random()  % (ma - mi + 1) + mi);
64}
65
66static void
67reader(void) {
68	socklen_t len;
69	struct sockaddr_in inetaddr, inetpeer;
70	int tcpsock, msgsock ,on, n, t, *buf;
71
72	on = 1;
73	setproctitle("%s", __func__);
74	if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
75		err(1, "socket(), %s:%d", __FILE__, __LINE__);
76
77	if (setsockopt(tcpsock,
78	    SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
79		err(1, "setsockopt(), %s:%d", __FILE__, __LINE__);
80
81	inetaddr.sin_family = AF_INET;
82	inetaddr.sin_addr.s_addr = INADDR_ANY;
83	inetaddr.sin_port = htons(port);
84	inetaddr.sin_len = sizeof(inetaddr);
85
86	if (bind(tcpsock,
87	    (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0)
88		err(1, "bind(), %s:%d", __FILE__, __LINE__);
89
90	if (listen(tcpsock, 5) < 0)
91		err(1, "listen(), %s:%d", __FILE__, __LINE__);
92
93	if ((random_int(1,100) > 60)) {
94		usleep(random_int(1000000,1000000) * 60);
95	}
96
97	len = sizeof(inetpeer);
98	if ((msgsock = accept(tcpsock,
99	    (struct sockaddr *)&inetpeer, &len)) < 0)
100		err(1, "accept(), %s:%d", __FILE__, __LINE__);
101
102	t = 0;
103	if ((buf = malloc(bufsize)) == NULL)
104			err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
105	for (;;) {
106		if ((n = read(msgsock, buf, bufsize)) < 0)
107			err(1, "read(), %s:%d", __FILE__, __LINE__);
108		t += n;
109		if (n == 0) break;
110	}
111	close(msgsock);
112	return;
113}
114
115static void
116writer(void) {
117	struct sockaddr_in inetaddr;
118	struct hostent *hostent;
119	time_t start;
120	int i, *buf, r;
121	int tcpsock, on;
122
123	on = 1;
124	setproctitle("%s", __func__);
125	for (i = 1; i < 5; i++) {
126		if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
127			err(1, "socket(), %s:%d", __FILE__, __LINE__);
128
129		if (setsockopt(tcpsock,
130		    SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
131			err(1, "setsockopt(), %s:%d", __FILE__, __LINE__);
132
133		hostent = gethostbyname ("localhost");
134		bzero((char *) &inetaddr, sizeof(inetaddr));
135		memcpy (&inetaddr.sin_addr.s_addr, hostent->h_addr,
136			sizeof (struct in_addr));
137
138		inetaddr.sin_family = AF_INET;
139		inetaddr.sin_port = htons(port);
140		inetaddr.sin_len = sizeof(inetaddr);
141
142		r = connect(tcpsock, (struct sockaddr *) &inetaddr,
143			sizeof(inetaddr));
144		if (r == 0)
145			break;
146		sleep(1);
147		close(tcpsock);
148	}
149	if (r < 0)
150		err(1, "connect(), %s:%d", __FILE__, __LINE__);
151
152	if ((buf = malloc(bufsize)) == NULL)
153			err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
154	for (i = 0; i < bufsize / (int)sizeof(int); i++)
155		buf[i] = i;
156
157	start = time(NULL);
158	while (time(NULL) - start < 60) {
159		for (i = 0; i < NB; i+= bufsize) {
160			if (write(tcpsock, buf, bufsize) < 0) {
161				if (errno == EPIPE)
162					return;
163				if (errno != ECONNRESET)
164					err(1, "write(%d), %s:%d", tcpsock,
165						__FILE__, __LINE__);
166				_exit(EXIT_SUCCESS);
167			}
168		}
169	}
170	return;
171}
172
173int
174setup(int nb)
175{
176	port = 12340 + nb;
177	bufsize = 2 << random_int(1, 12);
178	return (0);
179}
180
181int
182test(void)
183{
184	pid_t pid;
185
186	sleep(1);
187	if ((pid = fork()) == 0) {
188		alarm(180);
189		writer();
190		_exit(EXIT_SUCCESS);
191
192	} else if (pid > 0) {
193		alarm(180);
194		reader();
195		kill(pid, SIGINT);
196		if (waitpid(pid, NULL, 0) != pid)
197			err(1, "waitpid(%d)", pid);
198	} else
199		err(1, "fork(), %s:%d",  __FILE__, __LINE__);
200
201	return (0);
202}
203
204int
205main(int argc, char *argv[])
206{
207	pid_t *pid;
208	time_t start;
209	int i, n;
210
211	if (argc != 2) {
212		fprintf(stderr, "Usage: %s <threads>\n", argv[0]);
213		exit(1);
214	}
215	n = atoi(argv[1]);
216	pid = calloc(sizeof(pid_t *), n);
217
218	start = time(NULL);
219	while (time(NULL) - start < RUNTIME) {
220		for (i = 0; i < n; i++) {
221			if ((pid[i] = fork()) == 0) {
222				setup(i);
223				test();
224				_exit(0);
225			}
226		}
227		for (i = 0; i < n; i++)
228			if (waitpid(pid[i], NULL, 0) != pid[i])
229				err(1, "waitpid(%d) l%d", pid[i], __LINE__);
230		fprintf(stderr, "*** Done loop\n");
231	}
232
233	return (0);
234}
235EOF
236
237mycc -o tcp4 -Wall -Wextra -O2 tcp4.c || exit 1
238rm tcp4.c
239
240n=`sysctl -n kern.maxprocperuid`
241n=$((n / 2 / 10 * 8))
242./tcp4 $n > /dev/null 2>&1 &
243sleep 30
244while pgrep -q tcp4; do
245	pkill tcp4
246done
247wait
248rm -f tcp4
249exit 0
250