1 /* SCTP kernel Implementation
2 * (C) Copyright IBM Corp. 2001, 2003
3 * Copyright (c) 1999-2000 Cisco, Inc.
4 * Copyright (c) 1999-2001 Motorola, Inc.
5 * Copyright (c) 2001 Intel Corp.
6 * Copyright (c) 2001 Nokia, Inc.
7 *
8 * The SCTP implementation is free software;
9 * you can redistribute it and/or modify it under the terms of
10 * the GNU General Public License as published by
11 * the Free Software Foundation; either version 2, or (at your option)
12 * any later version.
13 *
14 * The SCTP implementation is distributed in the hope that it
15 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
16 * ************************
17 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
18 * See the GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with GNU CC; see the file COPYING. If not, write to
22 * the Free Software Foundation, 59 Temple Place - Suite 330,
23 * Boston, MA 02111-1307, USA.
24 *
25 * Please send any bug reports or fixes you make to the
26 * email address(es):
27 * lksctp developers <lksctp-developers@lists.sourceforge.net>
28 *
29 * Or submit a bug report through the following website:
30 * http://www.sf.net/projects/lksctp
31 *
32 * Any bugs reported to us we will try to fix... any fixes shared will
33 * be incorporated into the next SCTP release.
34 *
35 * Written or modified by:
36 * Sridhar Samudrala <sri@us.ibm.com>
37 */
38
39 /* This is a Functional test to verify the new SCTP interface sctp_peeloff()
40 * that can be used to branch off an association into a separate socket.
41 */
42
43 #include <stdio.h>
44 #include <unistd.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <sys/types.h>
48 #include <sys/socket.h>
49 #include <sys/uio.h>
50 #include <netinet/in.h>
51 #include <errno.h>
52 #include <netinet/sctp.h>
53 #include <sctputil.h>
54
55 char *TCID = __FILE__;
56 int TST_TOTAL = 6;
57 int TST_CNT = 0;
58
59 #define MAX_CLIENTS 10
60
61 int
main(int argc,char * argv[])62 main(int argc, char *argv[])
63 {
64 int svr_sk, clt_sk[MAX_CLIENTS], peeloff_sk[MAX_CLIENTS];
65 sctp_assoc_t svr_associd[MAX_CLIENTS];
66 sockaddr_storage_t svr_loop, clt_loop[MAX_CLIENTS];
67 struct iovec iov;
68 struct msghdr inmessage;
69 struct msghdr outmessage;
70 char incmsg[CMSG_SPACE(sizeof(sctp_cmsg_data_t))];
71 char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
72 struct cmsghdr *cmsg;
73 struct sctp_sndrcvinfo *sinfo;
74 struct iovec out_iov;
75 int error;
76 uint32_t ppid;
77 uint32_t stream;
78 struct sctp_assoc_change *sac;
79 char *big_buffer;
80 int i;
81 char *message = "hello, world!\n";
82 int pf_class;
83
84 /* Rather than fflush() throughout the code, set stdout to
85 * be unbuffered.
86 */
87 setvbuf(stdout, NULL, _IONBF, 0);
88
89 #if TEST_V6
90 pf_class = PF_INET6;
91 svr_loop.v6.sin6_family = AF_INET6;
92 svr_loop.v6.sin6_addr = in6addr_loopback;
93 svr_loop.v6.sin6_port = htons(SCTP_TESTPORT_1);
94 #else
95 pf_class = PF_INET;
96 svr_loop.v4.sin_family = AF_INET;
97 svr_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
98 svr_loop.v4.sin_port = htons(SCTP_TESTPORT_1);
99 #endif
100
101 /* Create and bind the server socket. */
102 svr_sk = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
103 test_bind(svr_sk, &svr_loop.sa, sizeof(svr_loop));
104
105 /* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
106 test_enable_assoc_change(svr_sk);
107
108 /* Mark server socket as being able to accept new associations. */
109 test_listen(svr_sk, 1);
110
111 /* Create and bind all the client sockets. */
112 for (i = 0; i < MAX_CLIENTS; i++) {
113 clt_sk[i] = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
114 #if TEST_V6
115 clt_loop[i].v6.sin6_family = AF_INET6;
116 clt_loop[i].v6.sin6_addr = in6addr_loopback;
117 clt_loop[i].v6.sin6_port = htons(SCTP_TESTPORT_2 + i);
118 #else
119 clt_loop[i].v4.sin_family = AF_INET;
120 clt_loop[i].v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
121 clt_loop[i].v4.sin_port = htons(SCTP_TESTPORT_2 + i);
122 #endif
123 test_bind(clt_sk[i], &clt_loop[i].sa, sizeof(clt_loop[i]));
124
125 test_enable_assoc_change(clt_sk[i]);
126 }
127
128 /* Send the first message from all the clients to the server. This
129 * will create the associations.
130 */
131 outmessage.msg_name = &svr_loop;
132 outmessage.msg_namelen = sizeof(svr_loop);
133 outmessage.msg_iov = &out_iov;
134 outmessage.msg_iovlen = 1;
135 outmessage.msg_control = outcmsg;
136 outmessage.msg_controllen = sizeof(outcmsg);
137 outmessage.msg_flags = 0;
138 cmsg = CMSG_FIRSTHDR(&outmessage);
139 cmsg->cmsg_level = IPPROTO_SCTP;
140 cmsg->cmsg_type = SCTP_SNDRCV;
141 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
142 outmessage.msg_controllen = cmsg->cmsg_len;
143 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
144 memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo));
145 ppid = rand(); /* Choose an arbitrary value. */
146 stream = 1;
147 sinfo->sinfo_ppid = ppid;
148 sinfo->sinfo_stream = stream;
149 outmessage.msg_iov->iov_base = message;
150 outmessage.msg_iov->iov_len = strlen(message) + 1;
151 for (i = 0; i < MAX_CLIENTS; i++)
152 test_sendmsg(clt_sk[i], &outmessage, 0,
153 strlen(message)+1);
154
155 /* Initialize inmessage for all receives. */
156 big_buffer = test_malloc(REALLY_BIG);
157 memset(&inmessage, 0, sizeof(inmessage));
158 iov.iov_base = big_buffer;
159 iov.iov_len = REALLY_BIG;
160 inmessage.msg_iov = &iov;
161 inmessage.msg_iovlen = 1;
162 inmessage.msg_control = incmsg;
163
164 /* Get the communication up message on all client sockets. */
165 for (i = 0; i < MAX_CLIENTS; i++) {
166 inmessage.msg_controllen = sizeof(incmsg);
167 error = test_recvmsg(clt_sk[i], &inmessage, MSG_WAITALL);
168 test_check_msg_notification(&inmessage, error,
169 sizeof(struct sctp_assoc_change),
170 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
171 #if 0
172 sac = (struct sctp_assoc_change *)iov.iov_base;
173 clt_associd[i] = sac->sac_assoc_id;
174 #endif
175 }
176
177 /* Get the communication up message and the data message on the
178 * server sockets for all the clients.
179 */
180 for (i = 0; i < MAX_CLIENTS; i++) {
181 inmessage.msg_controllen = sizeof(incmsg);
182 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
183 test_check_msg_notification(&inmessage, error,
184 sizeof(struct sctp_assoc_change),
185 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
186 sac = (struct sctp_assoc_change *)iov.iov_base;
187 svr_associd[i] = sac->sac_assoc_id;
188
189 inmessage.msg_controllen = sizeof(incmsg);
190 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
191 test_check_msg_data(&inmessage, error, strlen(message) + 1,
192 MSG_EOR, stream, ppid);
193 }
194
195 /* Branch off all the associations on the server socket to separate
196 * individual sockets.
197 */
198 for (i = 0; i < MAX_CLIENTS; i++)
199 peeloff_sk[i] = test_sctp_peeloff(svr_sk, svr_associd[i]);
200
201 tst_resm(TPASS, "sctp_peeloff");
202
203 errno = 0;
204 /* Verify that a peeled off socket is not allowed to do a listen(). */
205 error = listen(peeloff_sk[0], 1);
206 if (error != -1)
207 tst_brkm(TBROK, tst_exit, "listen on a peeled off socket "
208 "error: %d, errno: %d", error, errno);
209
210 tst_resm(TPASS, "listen on a peeled off socket");
211
212 errno = 0;
213 /* Verify that an association cannot be branched off an already
214 * peeled-off socket.
215 */
216 if ((-1 != sctp_peeloff(peeloff_sk[0], svr_associd[0])) ||
217 (EINVAL != errno))
218 tst_brkm(TBROK, tst_exit, "sctp_peeloff on a peeled off "
219 "socket error:%d, errno:%d",
220 error, errno);
221
222 tst_resm(TPASS, "sctp_peeloff on a peeled off socket");
223
224 /* Send a message from all the client sockets to the server socket. */
225 for (i = 0; i < MAX_CLIENTS; i++)
226 test_sendmsg(clt_sk[i], &outmessage, 0, strlen(message)+1);
227
228 /* Receive the sent messages on the peeled off server sockets. */
229 for (i = 0; i < MAX_CLIENTS; i++) {
230 inmessage.msg_controllen = sizeof(incmsg);
231 error = test_recvmsg(peeloff_sk[i], &inmessage, MSG_WAITALL);
232 test_check_msg_data(&inmessage, error, strlen(message) + 1,
233 MSG_EOR, stream, ppid);
234 }
235
236 tst_resm(TPASS, "Receive msgs on peeled off sockets");
237
238 /* Send a message from all the peeled off server sockets to the client
239 * sockets.
240 */
241 for (i = 0; i < MAX_CLIENTS; i++) {
242 outmessage.msg_name = &clt_loop[i];
243 outmessage.msg_namelen = sizeof(clt_loop[i]);
244 test_sendmsg(peeloff_sk[i], &outmessage, 0, strlen(message)+1);
245 }
246
247 /* Receive the messages sent from the peeled of server sockets on
248 * the client sockets.
249 */
250 for (i = 0; i < MAX_CLIENTS; i++) {
251 inmessage.msg_controllen = sizeof(incmsg);
252 error = test_recvmsg(clt_sk[i], &inmessage, MSG_WAITALL);
253 test_check_msg_data(&inmessage, error, strlen(message) + 1,
254 MSG_EOR, stream, ppid);
255 }
256
257 tst_resm(TPASS, "Send msgs on peeled off sockets");
258
259 errno = 0;
260 /* Verify that a peeled-off socket cannot initialize a new
261 * association by trying to send a message to a client that is not
262 * associated with the peeled-off socket.
263 * The message is sent to the client that is associated with the
264 * socket.
265 */
266 outmessage.msg_name = &clt_loop[1];
267 outmessage.msg_namelen = sizeof(clt_loop[1]);
268 test_sendmsg(peeloff_sk[0], &outmessage, 0, strlen(message)+1);
269
270 inmessage.msg_controllen = sizeof(incmsg);
271 error = test_recvmsg(clt_sk[0], &inmessage, MSG_WAITALL);
272 test_check_msg_data(&inmessage, error, strlen(message) + 1,
273 MSG_EOR, stream, ppid);
274
275 tst_resm(TPASS, "peeled off socket cannot initialize a new assoc");
276
277 close(svr_sk);
278
279 /* Close all the peeled off server sockets. */
280 for (i = 0; i < MAX_CLIENTS; i++)
281 close(peeloff_sk[i]);
282
283 /* Get the shutdown complete notification from all the client
284 * sockets.
285 */
286 for (i = 0; i < MAX_CLIENTS; i++) {
287 inmessage.msg_controllen = sizeof(incmsg);
288 error = test_recvmsg(clt_sk[i], &inmessage, MSG_WAITALL);
289 test_check_msg_notification(&inmessage, error,
290 sizeof(struct sctp_assoc_change),
291 SCTP_ASSOC_CHANGE,
292 SCTP_SHUTDOWN_COMP);
293
294 close(clt_sk[i]);
295 }
296
297 /* Indicate successful completion. */
298 return 0;
299 }
300