1 /* SCTP kernel Implementation
2 * (C) Copyright IBM Corp. 2002, 2003
3 * Copyright (c) 1999-2001 Motorola, Inc.
4 *
5 * The SCTP implementation is free software;
6 * you can redistribute it and/or modify it under the terms of
7 * the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * The SCTP implementation is distributed in the hope that it
12 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
13 * ************************
14 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 * See the GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU CC; see the file COPYING. If not, write to
19 * the Free Software Foundation, 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
21 *
22 * Please send any bug reports or fixes you make to the
23 * email address(es):
24 * lksctp developers <lksctp-developers@lists.sourceforge.net>
25 *
26 * Or submit a bug report through the following website:
27 * http://www.sf.net/projects/lksctp
28 *
29 * Any bugs reported given to us we will try to fix... any fixes shared will
30 * be incorporated into the next SCTP release.
31 *
32 * Written or modified by:
33 * Sridhar Samudrala <sri@us.ibm.com>
34 */
35
36 /* This is a kernel test to verify the one-to-many style connect() in blocking
37 * and non-blocking modes.
38 */
39
40 #include <stdio.h>
41 #include <unistd.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <fcntl.h>
45 #include <sys/types.h>
46 #include <sys/socket.h>
47 #include <sys/uio.h>
48 #include <netinet/in.h>
49 #include <errno.h>
50 #include <netinet/sctp.h>
51 #include <sctputil.h>
52
53 char *TCID = __FILE__;
54 int TST_TOTAL = 5;
55 int TST_CNT = 0;
56
57 int
main(int argc,char * argv[])58 main(int argc, char *argv[])
59 {
60 int svr_sk, clt_sk1, clt_sk2, peeloff_sk;
61 sctp_assoc_t svr_associd1;
62 sockaddr_storage_t svr_loop, clt_loop1, clt_loop2, clt_loop3;
63 struct sctp_assoc_change *sac;
64 struct iovec iov;
65 struct msghdr inmessage;
66 int error;
67 char *big_buffer;
68 int flags;
69
70 /* Rather than fflush() throughout the code, set stdout to
71 * be unbuffered.
72 */
73 setvbuf(stdout, NULL, _IONBF, 0);
74
75 /* Initialize the server and client addresses. */
76 svr_loop.v4.sin_family = AF_INET;
77 svr_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
78 svr_loop.v4.sin_port = htons(SCTP_TESTPORT_1);
79 clt_loop1.v4.sin_family = AF_INET;
80 clt_loop1.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
81 clt_loop1.v4.sin_port = htons(SCTP_TESTPORT_2);
82 clt_loop2.v4.sin_family = AF_INET;
83 clt_loop2.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
84 clt_loop2.v4.sin_port = htons(SCTP_TESTPORT_2+1);
85 clt_loop3.v4.sin_family = AF_INET;
86 clt_loop3.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
87 clt_loop3.v4.sin_port = htons(SCTP_TESTPORT_2+2);
88
89 /* Create and bind the server socket. */
90 svr_sk = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
91 test_bind(svr_sk, &svr_loop.sa, sizeof(svr_loop));
92
93 /* Mark server socket as being able to accept new associations. */
94 test_listen(svr_sk, 1);
95
96 /* Create and bind the client sockets. */
97 clt_sk1 = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
98 test_bind(clt_sk1, &clt_loop1.sa, sizeof(clt_loop1));
99 clt_sk2 = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
100 test_bind(clt_sk2, &clt_loop2.sa, sizeof(clt_loop2));
101
102 /* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
103 test_enable_assoc_change(svr_sk);
104 test_enable_assoc_change(clt_sk1);
105 test_enable_assoc_change(clt_sk2);
106
107 /* Set clt_sk1 as non-blocking. */
108 flags = fcntl(clt_sk1, F_GETFL, 0);
109 if (flags < 0)
110 tst_brkm(TBROK, tst_exit, "fcntl F_GETFL: %s", strerror(errno));
111 if (fcntl(clt_sk1, F_SETFL, flags | O_NONBLOCK) < 0)
112 tst_brkm(TBROK, tst_exit, "fcntl F_SETFL: %s", strerror(errno));
113
114 /* Do a non-blocking connect from clt_sk1 to svr_sk */
115 error = connect(clt_sk1, &svr_loop.sa, sizeof(svr_loop));
116 /* Non-blocking connect should return immediately with EINPROGRESS. */
117 if ((error != -1) || (EINPROGRESS != errno))
118 tst_brkm(TBROK, tst_exit, "non-blocking connect error: %d"
119 "errno:%d", error, errno);
120
121 tst_resm(TPASS, "non-blocking connect");
122
123 /* Doing a connect on a socket to create an association that is
124 * is already established should return EISCONN.
125 */
126 error = connect(clt_sk1, &svr_loop.sa, sizeof(svr_loop));
127 if ((error != -1) || (EISCONN != errno))
128 tst_brkm(TBROK, tst_exit, "connect on a socket to create an "
129 "assoc that is already established error:%d errno:%d",
130 error, errno);
131
132 tst_resm(TPASS, "connect on a socket to create an assoc that is "
133 "already established");
134
135 /* Initialize inmessage for all receives. */
136 memset(&inmessage, 0, sizeof(inmessage));
137 big_buffer = test_malloc(REALLY_BIG);
138 iov.iov_base = big_buffer;
139 iov.iov_len = REALLY_BIG;
140 inmessage.msg_iov = &iov;
141 inmessage.msg_iovlen = 1;
142 inmessage.msg_control = NULL;
143
144 /* Get COMM_UP on clt_sk1 */
145 error = test_recvmsg(clt_sk1, &inmessage, MSG_WAITALL);
146 test_check_msg_notification(&inmessage, error,
147 sizeof(struct sctp_assoc_change),
148 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
149 #if 0
150 sac = (struct sctp_assoc_change *)iov.iov_base;
151 clt_associd1 = sac->sac_assoc_id;
152 #endif
153
154 /* Get COMM_UP on svr_sk */
155 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
156 test_check_msg_notification(&inmessage, error,
157 sizeof(struct sctp_assoc_change),
158 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
159 sac = (struct sctp_assoc_change *)iov.iov_base;
160 svr_associd1 = sac->sac_assoc_id;
161
162 /* Do a blocking connect from clt_sk2 to svr_sk.
163 * Blocking connect should block until the association is established
164 * and return success.
165 */
166 test_connect(clt_sk2, &svr_loop.sa, sizeof(svr_loop));
167
168 /* Get COMM_UP on clt_sk2 */
169 error = test_recvmsg(clt_sk2, &inmessage, MSG_WAITALL);
170 test_check_msg_notification(&inmessage, error,
171 sizeof(struct sctp_assoc_change),
172 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
173 #if 0
174 sac = (struct sctp_assoc_change *)iov.iov_base;
175 clt_associd2 = sac->sac_assoc_id;
176 #endif
177
178 /* Get COMM_UP on svr_sk */
179 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
180 test_check_msg_notification(&inmessage, error,
181 sizeof(struct sctp_assoc_change),
182 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
183 #if 0
184 sac = (struct sctp_assoc_change *)iov.iov_base;
185 svr_associd2 = sac->sac_assoc_id;
186 #endif
187
188 tst_resm(TPASS, "blocking connect");
189
190 peeloff_sk = test_sctp_peeloff(svr_sk, svr_associd1);
191
192 /* Doing a connect on a peeled off socket should fail. */
193 error = connect(peeloff_sk, &clt_loop3.sa, sizeof(clt_loop3));
194 if ((error != -1) || (EISCONN != errno))
195 tst_brkm(TBROK, tst_exit, "connect on a peeled off socket "
196 "error:%d, errno:%d", error, errno);
197
198 tst_resm(TPASS, "connect on a peeled off socket");
199
200 /* Trying to create an association on a socket that matches an
201 * existing peeled-off association should fail.
202 */
203 error = connect(svr_sk, &clt_loop1.sa, sizeof(clt_loop1));
204 if ((error != -1) || (EADDRNOTAVAIL != errno))
205 tst_brkm(TBROK, tst_exit, "connect to create an assoc that "
206 "matches a peeled off assoc error:%d errno:%d",
207 error, errno);
208
209 tst_resm(TPASS, "connect to create an assoc that matches a peeled off "
210 "assoc");
211
212 close(svr_sk);
213 close(clt_sk1);
214 close(clt_sk2);
215 close(peeloff_sk);
216
217 /* Indicate successful completion. */
218 return 0;
219 }
220