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 #include "tst_kernel.h"
55
56 char *TCID = __FILE__;
57 int TST_TOTAL = 6;
58 int TST_CNT = 0;
59
60 #define MAX_CLIENTS 10
61
62 int
main(void)63 main(void)
64 {
65 int svr_sk, clt_sk[MAX_CLIENTS], peeloff_sk[MAX_CLIENTS];
66 sctp_assoc_t svr_associd[MAX_CLIENTS];
67 sockaddr_storage_t svr_loop, clt_loop[MAX_CLIENTS];
68 struct iovec iov;
69 struct msghdr inmessage;
70 struct msghdr outmessage;
71 char incmsg[CMSG_SPACE(sizeof(sctp_cmsg_data_t))];
72 char outcmsg[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
73 struct cmsghdr *cmsg;
74 struct sctp_sndrcvinfo *sinfo;
75 struct iovec out_iov;
76 int error;
77 uint32_t ppid;
78 uint32_t stream;
79 struct sctp_assoc_change *sac;
80 char *big_buffer;
81 int i;
82 char *message = "hello, world!\n";
83 int pf_class;
84
85 if (tst_check_driver("sctp"))
86 tst_brkm(TCONF, tst_exit, "sctp driver not available");
87
88 /* Rather than fflush() throughout the code, set stdout to
89 * be unbuffered.
90 */
91 setvbuf(stdout, NULL, _IONBF, 0);
92
93 #if TEST_V6
94 pf_class = PF_INET6;
95 svr_loop.v6.sin6_family = AF_INET6;
96 svr_loop.v6.sin6_addr = in6addr_loopback;
97 svr_loop.v6.sin6_port = htons(SCTP_TESTPORT_1);
98 #else
99 pf_class = PF_INET;
100 svr_loop.v4.sin_family = AF_INET;
101 svr_loop.v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
102 svr_loop.v4.sin_port = htons(SCTP_TESTPORT_1);
103 #endif
104
105 /* Create and bind the server socket. */
106 svr_sk = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
107 test_bind(svr_sk, &svr_loop.sa, sizeof(svr_loop));
108
109 /* Enable ASSOC_CHANGE and SNDRCVINFO notifications. */
110 test_enable_assoc_change(svr_sk);
111
112 /* Mark server socket as being able to accept new associations. */
113 test_listen(svr_sk, 1);
114
115 /* Create and bind all the client sockets. */
116 for (i = 0; i < MAX_CLIENTS; i++) {
117 clt_sk[i] = test_socket(pf_class, SOCK_SEQPACKET, IPPROTO_SCTP);
118 #if TEST_V6
119 clt_loop[i].v6.sin6_family = AF_INET6;
120 clt_loop[i].v6.sin6_addr = in6addr_loopback;
121 clt_loop[i].v6.sin6_port = htons(SCTP_TESTPORT_2 + i);
122 #else
123 clt_loop[i].v4.sin_family = AF_INET;
124 clt_loop[i].v4.sin_addr.s_addr = SCTP_IP_LOOPBACK;
125 clt_loop[i].v4.sin_port = htons(SCTP_TESTPORT_2 + i);
126 #endif
127 test_bind(clt_sk[i], &clt_loop[i].sa, sizeof(clt_loop[i]));
128
129 test_enable_assoc_change(clt_sk[i]);
130 }
131
132 /* Send the first message from all the clients to the server. This
133 * will create the associations.
134 */
135 outmessage.msg_name = &svr_loop;
136 outmessage.msg_namelen = sizeof(svr_loop);
137 outmessage.msg_iov = &out_iov;
138 outmessage.msg_iovlen = 1;
139 outmessage.msg_control = outcmsg;
140 outmessage.msg_controllen = sizeof(outcmsg);
141 outmessage.msg_flags = 0;
142 cmsg = CMSG_FIRSTHDR(&outmessage);
143 cmsg->cmsg_level = IPPROTO_SCTP;
144 cmsg->cmsg_type = SCTP_SNDRCV;
145 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
146 outmessage.msg_controllen = cmsg->cmsg_len;
147 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
148 memset(sinfo, 0x00, sizeof(struct sctp_sndrcvinfo));
149 ppid = rand(); /* Choose an arbitrary value. */
150 stream = 1;
151 sinfo->sinfo_ppid = ppid;
152 sinfo->sinfo_stream = stream;
153 outmessage.msg_iov->iov_base = message;
154 outmessage.msg_iov->iov_len = strlen(message) + 1;
155 for (i = 0; i < MAX_CLIENTS; i++)
156 test_sendmsg(clt_sk[i], &outmessage, 0,
157 strlen(message)+1);
158
159 /* Initialize inmessage for all receives. */
160 big_buffer = test_malloc(REALLY_BIG);
161 memset(&inmessage, 0, sizeof(inmessage));
162 iov.iov_base = big_buffer;
163 iov.iov_len = REALLY_BIG;
164 inmessage.msg_iov = &iov;
165 inmessage.msg_iovlen = 1;
166 inmessage.msg_control = incmsg;
167
168 /* Get the communication up message on all client sockets. */
169 for (i = 0; i < MAX_CLIENTS; i++) {
170 inmessage.msg_controllen = sizeof(incmsg);
171 error = test_recvmsg(clt_sk[i], &inmessage, MSG_WAITALL);
172 test_check_msg_notification(&inmessage, error,
173 sizeof(struct sctp_assoc_change),
174 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
175 #if 0
176 sac = (struct sctp_assoc_change *)iov.iov_base;
177 clt_associd[i] = sac->sac_assoc_id;
178 #endif
179 }
180
181 /* Get the communication up message and the data message on the
182 * server sockets for all the clients.
183 */
184 for (i = 0; i < MAX_CLIENTS; i++) {
185 inmessage.msg_controllen = sizeof(incmsg);
186 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
187 test_check_msg_notification(&inmessage, error,
188 sizeof(struct sctp_assoc_change),
189 SCTP_ASSOC_CHANGE, SCTP_COMM_UP);
190 sac = (struct sctp_assoc_change *)iov.iov_base;
191 svr_associd[i] = sac->sac_assoc_id;
192
193 inmessage.msg_controllen = sizeof(incmsg);
194 error = test_recvmsg(svr_sk, &inmessage, MSG_WAITALL);
195 test_check_msg_data(&inmessage, error, strlen(message) + 1,
196 MSG_EOR, stream, ppid);
197 }
198
199 /* Branch off all the associations on the server socket to separate
200 * individual sockets.
201 */
202 for (i = 0; i < MAX_CLIENTS; i++)
203 peeloff_sk[i] = test_sctp_peeloff(svr_sk, svr_associd[i]);
204
205 tst_resm(TPASS, "sctp_peeloff");
206
207 errno = 0;
208 /* Verify that a peeled off socket is not allowed to do a listen(). */
209 error = listen(peeloff_sk[0], 1);
210 if (error != -1)
211 tst_brkm(TBROK, tst_exit, "listen on a peeled off socket "
212 "error: %d, errno: %d", error, errno);
213
214 tst_resm(TPASS, "listen on a peeled off socket");
215
216 errno = 0;
217 /* Verify that an association cannot be branched off an already
218 * peeled-off socket.
219 */
220 if ((-1 != sctp_peeloff(peeloff_sk[0], svr_associd[0])) ||
221 (EINVAL != errno))
222 tst_brkm(TBROK, tst_exit, "sctp_peeloff on a peeled off "
223 "socket error:%d, errno:%d",
224 error, errno);
225
226 tst_resm(TPASS, "sctp_peeloff on a peeled off socket");
227
228 /* Send a message from all the client sockets to the server socket. */
229 for (i = 0; i < MAX_CLIENTS; i++)
230 test_sendmsg(clt_sk[i], &outmessage, 0, strlen(message)+1);
231
232 /* Receive the sent messages on the peeled off server sockets. */
233 for (i = 0; i < MAX_CLIENTS; i++) {
234 inmessage.msg_controllen = sizeof(incmsg);
235 error = test_recvmsg(peeloff_sk[i], &inmessage, MSG_WAITALL);
236 test_check_msg_data(&inmessage, error, strlen(message) + 1,
237 MSG_EOR, stream, ppid);
238 }
239
240 tst_resm(TPASS, "Receive msgs on peeled off sockets");
241
242 /* Send a message from all the peeled off server sockets to the client
243 * sockets.
244 */
245 for (i = 0; i < MAX_CLIENTS; i++) {
246 outmessage.msg_name = &clt_loop[i];
247 outmessage.msg_namelen = sizeof(clt_loop[i]);
248 test_sendmsg(peeloff_sk[i], &outmessage, 0, strlen(message)+1);
249 }
250
251 /* Receive the messages sent from the peeled of server sockets on
252 * the client sockets.
253 */
254 for (i = 0; i < MAX_CLIENTS; i++) {
255 inmessage.msg_controllen = sizeof(incmsg);
256 error = test_recvmsg(clt_sk[i], &inmessage, MSG_WAITALL);
257 test_check_msg_data(&inmessage, error, strlen(message) + 1,
258 MSG_EOR, stream, ppid);
259 }
260
261 tst_resm(TPASS, "Send msgs on peeled off sockets");
262
263 errno = 0;
264 /* Verify that a peeled-off socket cannot initialize a new
265 * association by trying to send a message to a client that is not
266 * associated with the peeled-off socket.
267 * The message is sent to the client that is associated with the
268 * socket.
269 */
270 outmessage.msg_name = &clt_loop[1];
271 outmessage.msg_namelen = sizeof(clt_loop[1]);
272 test_sendmsg(peeloff_sk[0], &outmessage, 0, strlen(message)+1);
273
274 inmessage.msg_controllen = sizeof(incmsg);
275 error = test_recvmsg(clt_sk[0], &inmessage, MSG_WAITALL);
276 test_check_msg_data(&inmessage, error, strlen(message) + 1,
277 MSG_EOR, stream, ppid);
278
279 tst_resm(TPASS, "peeled off socket cannot initialize a new assoc");
280
281 close(svr_sk);
282
283 /* Close all the peeled off server sockets. */
284 for (i = 0; i < MAX_CLIENTS; i++)
285 close(peeloff_sk[i]);
286
287 /* Get the shutdown complete notification from all the client
288 * sockets.
289 */
290 for (i = 0; i < MAX_CLIENTS; i++) {
291 inmessage.msg_controllen = sizeof(incmsg);
292 error = test_recvmsg(clt_sk[i], &inmessage, MSG_WAITALL);
293 test_check_msg_notification(&inmessage, error,
294 sizeof(struct sctp_assoc_change),
295 SCTP_ASSOC_CHANGE,
296 SCTP_SHUTDOWN_COMP);
297
298 close(clt_sk[i]);
299 }
300
301 /* Indicate successful completion. */
302 return 0;
303 }
304