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 #include "tst_kernel.h"
53
54 char *TCID = __FILE__;
55 int TST_TOTAL = 5;
56 int TST_CNT = 0;
57
58 int
main(void)59 main(void)
60 {
61 int svr_sk, clt_sk1, clt_sk2, peeloff_sk;
62 sctp_assoc_t svr_associd1;
63 sockaddr_storage_t svr_loop, clt_loop1, clt_loop2, clt_loop3;
64 struct sctp_assoc_change *sac;
65 struct iovec iov;
66 struct msghdr inmessage;
67 int error;
68 char *big_buffer;
69 int flags;
70
71 if (tst_check_driver("sctp"))
72 tst_brkm(TCONF, tst_exit, "sctp driver not available");
73
74 /* Rather than fflush() throughout the code, set stdout to
75 * be unbuffered.
76 */
77 setvbuf(stdout, NULL, _IONBF, 0);
78
79 /* Initialize the server and client addresses. */
80 svr_loop.v4.sin_family = AF_INET;
81 svr_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
82 svr_loop.v4.sin_port = htons(SCTP_TESTPORT_1);
83 clt_loop1.v4.sin_family = AF_INET;
84 clt_loop1.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
85 clt_loop1.v4.sin_port = htons(SCTP_TESTPORT_2);
86 clt_loop2.v4.sin_family = AF_INET;
87 clt_loop2.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
88 clt_loop2.v4.sin_port = htons(SCTP_TESTPORT_2+1);
89 clt_loop3.v4.sin_family = AF_INET;
90 clt_loop3.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
91 clt_loop3.v4.sin_port = htons(SCTP_TESTPORT_2+2);
92
93 /* Create and bind the server socket. */
94 svr_sk = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
95 test_bind(svr_sk, &svr_loop.sa, sizeof(svr_loop));
96
97 /* Mark server socket as being able to accept new associations. */
98 test_listen(svr_sk, 1);
99
100 /* Create and bind the client sockets. */
101 clt_sk1 = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
102 test_bind(clt_sk1, &clt_loop1.sa, sizeof(clt_loop1));
103 clt_sk2 = test_socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
104 test_bind(clt_sk2, &clt_loop2.sa, sizeof(clt_loop2));
105
106 /* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
107 test_enable_assoc_change(svr_sk);
108 test_enable_assoc_change(clt_sk1);
109 test_enable_assoc_change(clt_sk2);
110
111 /* Set clt_sk1 as non-blocking. */
112 flags = fcntl(clt_sk1, F_GETFL, 0);
113 if (flags < 0)
114 tst_brkm(TBROK, tst_exit, "fcntl F_GETFL: %s", strerror(errno));
115 if (fcntl(clt_sk1, F_SETFL, flags | O_NONBLOCK) < 0)
116 tst_brkm(TBROK, tst_exit, "fcntl F_SETFL: %s", strerror(errno));
117
118 /* Do a non-blocking connect from clt_sk1 to svr_sk */
119 error = connect(clt_sk1, &svr_loop.sa, sizeof(svr_loop));
120 /* Non-blocking connect should return immediately with EINPROGRESS. */
121 if ((error != -1) || (EINPROGRESS != errno))
122 tst_brkm(TBROK, tst_exit, "non-blocking connect error: %d "
123 "errno:%d", error, errno);
124
125 tst_resm(TPASS, "non-blocking connect");
126
127 /* Doing a connect on a socket to create an association that is
128 * is already established should return EISCONN.
129 */
130 error = connect(clt_sk1, &svr_loop.sa, sizeof(svr_loop));
131 if ((error != -1) || (EISCONN != errno))
132 tst_brkm(TBROK, tst_exit, "connect on a socket to create an "
133 "assoc that is already established error:%d errno:%d",
134 error, errno);
135
136 tst_resm(TPASS, "connect on a socket to create an assoc that is "
137 "already established");
138
139 /* Initialize inmessage for all receives. */
140 memset(&inmessage, 0, sizeof(inmessage));
141 big_buffer = test_malloc(REALLY_BIG);
142 iov.iov_base = big_buffer;
143 iov.iov_len = REALLY_BIG;
144 inmessage.msg_iov = &iov;
145 inmessage.msg_iovlen = 1;
146 inmessage.msg_control = NULL;
147
148 /* Get COMM_UP on clt_sk1 */
149 error = test_recvmsg(clt_sk1, &inmessage, MSG_WAITALL);
150 test_check_msg_notification(&inmessage, error,
151 sizeof(struct sctp_assoc_change),
152 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
153 #if 0
154 sac = (struct sctp_assoc_change *)iov.iov_base;
155 clt_associd1 = sac->sac_assoc_id;
156 #endif
157
158 /* Get COMM_UP on svr_sk */
159 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
160 test_check_msg_notification(&inmessage, error,
161 sizeof(struct sctp_assoc_change),
162 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
163 sac = (struct sctp_assoc_change *)iov.iov_base;
164 svr_associd1 = sac->sac_assoc_id;
165
166 /* Do a blocking connect from clt_sk2 to svr_sk.
167 * Blocking connect should block until the association is established
168 * and return success.
169 */
170 test_connect(clt_sk2, &svr_loop.sa, sizeof(svr_loop));
171
172 /* Get COMM_UP on clt_sk2 */
173 error = test_recvmsg(clt_sk2, &inmessage, MSG_WAITALL);
174 test_check_msg_notification(&inmessage, error,
175 sizeof(struct sctp_assoc_change),
176 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
177 #if 0
178 sac = (struct sctp_assoc_change *)iov.iov_base;
179 clt_associd2 = sac->sac_assoc_id;
180 #endif
181
182 /* Get COMM_UP on svr_sk */
183 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
184 test_check_msg_notification(&inmessage, error,
185 sizeof(struct sctp_assoc_change),
186 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
187 #if 0
188 sac = (struct sctp_assoc_change *)iov.iov_base;
189 svr_associd2 = sac->sac_assoc_id;
190 #endif
191
192 tst_resm(TPASS, "blocking connect");
193
194 peeloff_sk = test_sctp_peeloff(svr_sk, svr_associd1);
195
196 /* Doing a connect on a peeled off socket should fail. */
197 error = connect(peeloff_sk, &clt_loop3.sa, sizeof(clt_loop3));
198 if ((error != -1) || (EISCONN != errno))
199 tst_brkm(TBROK, tst_exit, "connect on a peeled off socket "
200 "error:%d, errno:%d", error, errno);
201
202 tst_resm(TPASS, "connect on a peeled off socket");
203
204 /* Trying to create an association on a socket that matches an
205 * existing peeled-off association should fail.
206 */
207 error = connect(svr_sk, &clt_loop1.sa, sizeof(clt_loop1));
208 if ((error != -1) || (EADDRNOTAVAIL != errno))
209 tst_brkm(TBROK, tst_exit, "connect to create an assoc that "
210 "matches a peeled off assoc error:%d errno:%d",
211 error, errno);
212
213 tst_resm(TPASS, "connect to create an assoc that matches a peeled off "
214 "assoc");
215
216 close(svr_sk);
217 close(clt_sk1);
218 close(clt_sk2);
219 close(peeloff_sk);
220
221 /* Indicate successful completion. */
222 return 0;
223 }
224