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 (at) 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 (at) 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 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
