1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * a) Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 14 * b) Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the distribution. 17 * 18 * c) Neither the name of Cisco Systems, Inc. nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <netinet/sctp_os.h> 39 #include <netinet/sctp_pcb.h> 40 #include <netinet/sctputil.h> 41 #include <netinet/sctp_var.h> 42 #include <netinet/sctp_sysctl.h> 43 #ifdef INET6 44 #include <netinet6/sctp6_var.h> 45 #endif 46 #include <netinet/sctp_header.h> 47 #include <netinet/sctp_output.h> 48 #include <netinet/sctp_uio.h> 49 #include <netinet/sctp_timer.h> 50 #include <netinet/sctp_indata.h> 51 #include <netinet/sctp_auth.h> 52 #include <netinet/sctp_asconf.h> 53 #include <netinet/sctp_bsd_addr.h> 54 #include <netinet/sctp_kdtrace.h> 55 #if defined(INET6) || defined(INET) 56 #include <netinet/tcp_var.h> 57 #endif 58 #include <netinet/udp.h> 59 #include <netinet/udp_var.h> 60 #include <sys/proc.h> 61 #ifdef INET6 62 #include <netinet/icmp6.h> 63 #endif 64 65 #ifndef KTR_SCTP 66 #define KTR_SCTP KTR_SUBSYS 67 #endif 68 69 extern const struct sctp_cc_functions sctp_cc_functions[]; 70 extern const struct sctp_ss_functions sctp_ss_functions[]; 71 72 void 73 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr) 74 { 75 #if defined(SCTP_LOCAL_TRACE_BUF) 76 struct sctp_cwnd_log sctp_clog; 77 78 sctp_clog.x.sb.stcb = stcb; 79 sctp_clog.x.sb.so_sbcc = sb->sb_cc; 80 if (stcb) 81 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc; 82 else 83 sctp_clog.x.sb.stcb_sbcc = 0; 84 sctp_clog.x.sb.incr = incr; 85 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 86 SCTP_LOG_EVENT_SB, 87 from, 88 sctp_clog.x.misc.log1, 89 sctp_clog.x.misc.log2, 90 sctp_clog.x.misc.log3, 91 sctp_clog.x.misc.log4); 92 #endif 93 } 94 95 void 96 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc) 97 { 98 #if defined(SCTP_LOCAL_TRACE_BUF) 99 struct sctp_cwnd_log sctp_clog; 100 101 sctp_clog.x.close.inp = (void *)inp; 102 sctp_clog.x.close.sctp_flags = inp->sctp_flags; 103 if (stcb) { 104 sctp_clog.x.close.stcb = (void *)stcb; 105 sctp_clog.x.close.state = (uint16_t)stcb->asoc.state; 106 } else { 107 sctp_clog.x.close.stcb = 0; 108 sctp_clog.x.close.state = 0; 109 } 110 sctp_clog.x.close.loc = loc; 111 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 112 SCTP_LOG_EVENT_CLOSE, 113 0, 114 sctp_clog.x.misc.log1, 115 sctp_clog.x.misc.log2, 116 sctp_clog.x.misc.log3, 117 sctp_clog.x.misc.log4); 118 #endif 119 } 120 121 void 122 rto_logging(struct sctp_nets *net, int from) 123 { 124 #if defined(SCTP_LOCAL_TRACE_BUF) 125 struct sctp_cwnd_log sctp_clog; 126 127 memset(&sctp_clog, 0, sizeof(sctp_clog)); 128 sctp_clog.x.rto.net = (void *)net; 129 sctp_clog.x.rto.rtt = net->rtt / 1000; 130 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 131 SCTP_LOG_EVENT_RTT, 132 from, 133 sctp_clog.x.misc.log1, 134 sctp_clog.x.misc.log2, 135 sctp_clog.x.misc.log3, 136 sctp_clog.x.misc.log4); 137 #endif 138 } 139 140 void 141 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from) 142 { 143 #if defined(SCTP_LOCAL_TRACE_BUF) 144 struct sctp_cwnd_log sctp_clog; 145 146 sctp_clog.x.strlog.stcb = stcb; 147 sctp_clog.x.strlog.n_tsn = tsn; 148 sctp_clog.x.strlog.n_sseq = sseq; 149 sctp_clog.x.strlog.e_tsn = 0; 150 sctp_clog.x.strlog.e_sseq = 0; 151 sctp_clog.x.strlog.strm = stream; 152 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 153 SCTP_LOG_EVENT_STRM, 154 from, 155 sctp_clog.x.misc.log1, 156 sctp_clog.x.misc.log2, 157 sctp_clog.x.misc.log3, 158 sctp_clog.x.misc.log4); 159 #endif 160 } 161 162 void 163 sctp_log_nagle_event(struct sctp_tcb *stcb, int action) 164 { 165 #if defined(SCTP_LOCAL_TRACE_BUF) 166 struct sctp_cwnd_log sctp_clog; 167 168 sctp_clog.x.nagle.stcb = (void *)stcb; 169 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight; 170 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size; 171 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue; 172 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count; 173 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 174 SCTP_LOG_EVENT_NAGLE, 175 action, 176 sctp_clog.x.misc.log1, 177 sctp_clog.x.misc.log2, 178 sctp_clog.x.misc.log3, 179 sctp_clog.x.misc.log4); 180 #endif 181 } 182 183 void 184 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from) 185 { 186 #if defined(SCTP_LOCAL_TRACE_BUF) 187 struct sctp_cwnd_log sctp_clog; 188 189 sctp_clog.x.sack.cumack = cumack; 190 sctp_clog.x.sack.oldcumack = old_cumack; 191 sctp_clog.x.sack.tsn = tsn; 192 sctp_clog.x.sack.numGaps = gaps; 193 sctp_clog.x.sack.numDups = dups; 194 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 195 SCTP_LOG_EVENT_SACK, 196 from, 197 sctp_clog.x.misc.log1, 198 sctp_clog.x.misc.log2, 199 sctp_clog.x.misc.log3, 200 sctp_clog.x.misc.log4); 201 #endif 202 } 203 204 void 205 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from) 206 { 207 #if defined(SCTP_LOCAL_TRACE_BUF) 208 struct sctp_cwnd_log sctp_clog; 209 210 memset(&sctp_clog, 0, sizeof(sctp_clog)); 211 sctp_clog.x.map.base = map; 212 sctp_clog.x.map.cum = cum; 213 sctp_clog.x.map.high = high; 214 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 215 SCTP_LOG_EVENT_MAP, 216 from, 217 sctp_clog.x.misc.log1, 218 sctp_clog.x.misc.log2, 219 sctp_clog.x.misc.log3, 220 sctp_clog.x.misc.log4); 221 #endif 222 } 223 224 void 225 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from) 226 { 227 #if defined(SCTP_LOCAL_TRACE_BUF) 228 struct sctp_cwnd_log sctp_clog; 229 230 memset(&sctp_clog, 0, sizeof(sctp_clog)); 231 sctp_clog.x.fr.largest_tsn = biggest_tsn; 232 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn; 233 sctp_clog.x.fr.tsn = tsn; 234 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 235 SCTP_LOG_EVENT_FR, 236 from, 237 sctp_clog.x.misc.log1, 238 sctp_clog.x.misc.log2, 239 sctp_clog.x.misc.log3, 240 sctp_clog.x.misc.log4); 241 #endif 242 } 243 244 #ifdef SCTP_MBUF_LOGGING 245 void 246 sctp_log_mb(struct mbuf *m, int from) 247 { 248 #if defined(SCTP_LOCAL_TRACE_BUF) 249 struct sctp_cwnd_log sctp_clog; 250 251 sctp_clog.x.mb.mp = m; 252 sctp_clog.x.mb.mbuf_flags = (uint8_t)(SCTP_BUF_GET_FLAGS(m)); 253 sctp_clog.x.mb.size = (uint16_t)(SCTP_BUF_LEN(m)); 254 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0); 255 if (SCTP_BUF_IS_EXTENDED(m)) { 256 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m); 257 sctp_clog.x.mb.refcnt = (uint8_t)(SCTP_BUF_EXTEND_REFCNT(m)); 258 } else { 259 sctp_clog.x.mb.ext = 0; 260 sctp_clog.x.mb.refcnt = 0; 261 } 262 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 263 SCTP_LOG_EVENT_MBUF, 264 from, 265 sctp_clog.x.misc.log1, 266 sctp_clog.x.misc.log2, 267 sctp_clog.x.misc.log3, 268 sctp_clog.x.misc.log4); 269 #endif 270 } 271 272 void 273 sctp_log_mbc(struct mbuf *m, int from) 274 { 275 struct mbuf *mat; 276 277 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) { 278 sctp_log_mb(mat, from); 279 } 280 } 281 #endif 282 283 void 284 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from) 285 { 286 #if defined(SCTP_LOCAL_TRACE_BUF) 287 struct sctp_cwnd_log sctp_clog; 288 289 if (control == NULL) { 290 SCTP_PRINTF("Gak log of NULL?\n"); 291 return; 292 } 293 sctp_clog.x.strlog.stcb = control->stcb; 294 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn; 295 sctp_clog.x.strlog.n_sseq = (uint16_t)control->mid; 296 sctp_clog.x.strlog.strm = control->sinfo_stream; 297 if (poschk != NULL) { 298 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn; 299 sctp_clog.x.strlog.e_sseq = (uint16_t)poschk->mid; 300 } else { 301 sctp_clog.x.strlog.e_tsn = 0; 302 sctp_clog.x.strlog.e_sseq = 0; 303 } 304 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 305 SCTP_LOG_EVENT_STRM, 306 from, 307 sctp_clog.x.misc.log1, 308 sctp_clog.x.misc.log2, 309 sctp_clog.x.misc.log3, 310 sctp_clog.x.misc.log4); 311 #endif 312 } 313 314 void 315 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from) 316 { 317 #if defined(SCTP_LOCAL_TRACE_BUF) 318 struct sctp_cwnd_log sctp_clog; 319 320 sctp_clog.x.cwnd.net = net; 321 if (stcb->asoc.send_queue_cnt > 255) 322 sctp_clog.x.cwnd.cnt_in_send = 255; 323 else 324 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; 325 if (stcb->asoc.stream_queue_cnt > 255) 326 sctp_clog.x.cwnd.cnt_in_str = 255; 327 else 328 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; 329 330 if (net) { 331 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd; 332 sctp_clog.x.cwnd.inflight = net->flight_size; 333 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack; 334 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack; 335 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack; 336 } 337 if (SCTP_CWNDLOG_PRESEND == from) { 338 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd; 339 } 340 sctp_clog.x.cwnd.cwnd_augment = augment; 341 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 342 SCTP_LOG_EVENT_CWND, 343 from, 344 sctp_clog.x.misc.log1, 345 sctp_clog.x.misc.log2, 346 sctp_clog.x.misc.log3, 347 sctp_clog.x.misc.log4); 348 #endif 349 } 350 351 void 352 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from) 353 { 354 #if defined(SCTP_LOCAL_TRACE_BUF) 355 struct sctp_cwnd_log sctp_clog; 356 357 memset(&sctp_clog, 0, sizeof(sctp_clog)); 358 if (inp) { 359 sctp_clog.x.lock.sock = (void *)inp->sctp_socket; 360 361 } else { 362 sctp_clog.x.lock.sock = (void *)NULL; 363 } 364 sctp_clog.x.lock.inp = (void *)inp; 365 if (stcb) { 366 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx); 367 } else { 368 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN; 369 } 370 if (inp) { 371 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx); 372 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx); 373 } else { 374 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN; 375 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN; 376 } 377 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx)); 378 if (inp && (inp->sctp_socket)) { 379 sctp_clog.x.lock.sock_lock = mtx_owned(SOCK_MTX(inp->sctp_socket)); 380 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(SOCKBUF_MTX(&inp->sctp_socket->so_rcv)); 381 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(SOCKBUF_MTX(&inp->sctp_socket->so_snd)); 382 } else { 383 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN; 384 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN; 385 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN; 386 } 387 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 388 SCTP_LOG_LOCK_EVENT, 389 from, 390 sctp_clog.x.misc.log1, 391 sctp_clog.x.misc.log2, 392 sctp_clog.x.misc.log3, 393 sctp_clog.x.misc.log4); 394 #endif 395 } 396 397 void 398 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from) 399 { 400 #if defined(SCTP_LOCAL_TRACE_BUF) 401 struct sctp_cwnd_log sctp_clog; 402 403 memset(&sctp_clog, 0, sizeof(sctp_clog)); 404 sctp_clog.x.cwnd.net = net; 405 sctp_clog.x.cwnd.cwnd_new_value = error; 406 sctp_clog.x.cwnd.inflight = net->flight_size; 407 sctp_clog.x.cwnd.cwnd_augment = burst; 408 if (stcb->asoc.send_queue_cnt > 255) 409 sctp_clog.x.cwnd.cnt_in_send = 255; 410 else 411 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; 412 if (stcb->asoc.stream_queue_cnt > 255) 413 sctp_clog.x.cwnd.cnt_in_str = 255; 414 else 415 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; 416 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 417 SCTP_LOG_EVENT_MAXBURST, 418 from, 419 sctp_clog.x.misc.log1, 420 sctp_clog.x.misc.log2, 421 sctp_clog.x.misc.log3, 422 sctp_clog.x.misc.log4); 423 #endif 424 } 425 426 void 427 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead) 428 { 429 #if defined(SCTP_LOCAL_TRACE_BUF) 430 struct sctp_cwnd_log sctp_clog; 431 432 sctp_clog.x.rwnd.rwnd = peers_rwnd; 433 sctp_clog.x.rwnd.send_size = snd_size; 434 sctp_clog.x.rwnd.overhead = overhead; 435 sctp_clog.x.rwnd.new_rwnd = 0; 436 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 437 SCTP_LOG_EVENT_RWND, 438 from, 439 sctp_clog.x.misc.log1, 440 sctp_clog.x.misc.log2, 441 sctp_clog.x.misc.log3, 442 sctp_clog.x.misc.log4); 443 #endif 444 } 445 446 void 447 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval) 448 { 449 #if defined(SCTP_LOCAL_TRACE_BUF) 450 struct sctp_cwnd_log sctp_clog; 451 452 sctp_clog.x.rwnd.rwnd = peers_rwnd; 453 sctp_clog.x.rwnd.send_size = flight_size; 454 sctp_clog.x.rwnd.overhead = overhead; 455 sctp_clog.x.rwnd.new_rwnd = a_rwndval; 456 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 457 SCTP_LOG_EVENT_RWND, 458 from, 459 sctp_clog.x.misc.log1, 460 sctp_clog.x.misc.log2, 461 sctp_clog.x.misc.log3, 462 sctp_clog.x.misc.log4); 463 #endif 464 } 465 466 #ifdef SCTP_MBCNT_LOGGING 467 static void 468 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt) 469 { 470 #if defined(SCTP_LOCAL_TRACE_BUF) 471 struct sctp_cwnd_log sctp_clog; 472 473 sctp_clog.x.mbcnt.total_queue_size = total_oq; 474 sctp_clog.x.mbcnt.size_change = book; 475 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q; 476 sctp_clog.x.mbcnt.mbcnt_change = mbcnt; 477 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 478 SCTP_LOG_EVENT_MBCNT, 479 from, 480 sctp_clog.x.misc.log1, 481 sctp_clog.x.misc.log2, 482 sctp_clog.x.misc.log3, 483 sctp_clog.x.misc.log4); 484 #endif 485 } 486 #endif 487 488 void 489 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d) 490 { 491 #if defined(SCTP_LOCAL_TRACE_BUF) 492 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 493 SCTP_LOG_MISC_EVENT, 494 from, 495 a, b, c, d); 496 #endif 497 } 498 499 void 500 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from) 501 { 502 #if defined(SCTP_LOCAL_TRACE_BUF) 503 struct sctp_cwnd_log sctp_clog; 504 505 sctp_clog.x.wake.stcb = (void *)stcb; 506 sctp_clog.x.wake.wake_cnt = wake_cnt; 507 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count; 508 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt; 509 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt; 510 511 if (stcb->asoc.stream_queue_cnt < 0xff) 512 sctp_clog.x.wake.stream_qcnt = (uint8_t)stcb->asoc.stream_queue_cnt; 513 else 514 sctp_clog.x.wake.stream_qcnt = 0xff; 515 516 if (stcb->asoc.chunks_on_out_queue < 0xff) 517 sctp_clog.x.wake.chunks_on_oque = (uint8_t)stcb->asoc.chunks_on_out_queue; 518 else 519 sctp_clog.x.wake.chunks_on_oque = 0xff; 520 521 sctp_clog.x.wake.sctpflags = 0; 522 /* set in the defered mode stuff */ 523 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) 524 sctp_clog.x.wake.sctpflags |= 1; 525 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) 526 sctp_clog.x.wake.sctpflags |= 2; 527 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) 528 sctp_clog.x.wake.sctpflags |= 4; 529 /* what about the sb */ 530 if (stcb->sctp_socket) { 531 struct socket *so = stcb->sctp_socket; 532 533 sctp_clog.x.wake.sbflags = (uint8_t)((so->so_snd.sb_flags & 0x00ff)); 534 } else { 535 sctp_clog.x.wake.sbflags = 0xff; 536 } 537 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 538 SCTP_LOG_EVENT_WAKE, 539 from, 540 sctp_clog.x.misc.log1, 541 sctp_clog.x.misc.log2, 542 sctp_clog.x.misc.log3, 543 sctp_clog.x.misc.log4); 544 #endif 545 } 546 547 void 548 sctp_log_block(uint8_t from, struct sctp_association *asoc, ssize_t sendlen) 549 { 550 #if defined(SCTP_LOCAL_TRACE_BUF) 551 struct sctp_cwnd_log sctp_clog; 552 553 sctp_clog.x.blk.onsb = asoc->total_output_queue_size; 554 sctp_clog.x.blk.send_sent_qcnt = (uint16_t)(asoc->send_queue_cnt + asoc->sent_queue_cnt); 555 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd; 556 sctp_clog.x.blk.stream_qcnt = (uint16_t)asoc->stream_queue_cnt; 557 sctp_clog.x.blk.chunks_on_oque = (uint16_t)asoc->chunks_on_out_queue; 558 sctp_clog.x.blk.flight_size = (uint16_t)(asoc->total_flight / 1024); 559 sctp_clog.x.blk.sndlen = (uint32_t)sendlen; 560 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 561 SCTP_LOG_EVENT_BLOCK, 562 from, 563 sctp_clog.x.misc.log1, 564 sctp_clog.x.misc.log2, 565 sctp_clog.x.misc.log3, 566 sctp_clog.x.misc.log4); 567 #endif 568 } 569 570 int 571 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED) 572 { 573 /* May need to fix this if ktrdump does not work */ 574 return (0); 575 } 576 577 #ifdef SCTP_AUDITING_ENABLED 578 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2]; 579 static int sctp_audit_indx = 0; 580 581 static 582 void 583 sctp_print_audit_report(void) 584 { 585 int i; 586 int cnt; 587 588 cnt = 0; 589 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) { 590 if ((sctp_audit_data[i][0] == 0xe0) && 591 (sctp_audit_data[i][1] == 0x01)) { 592 cnt = 0; 593 SCTP_PRINTF("\n"); 594 } else if (sctp_audit_data[i][0] == 0xf0) { 595 cnt = 0; 596 SCTP_PRINTF("\n"); 597 } else if ((sctp_audit_data[i][0] == 0xc0) && 598 (sctp_audit_data[i][1] == 0x01)) { 599 SCTP_PRINTF("\n"); 600 cnt = 0; 601 } 602 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0], 603 (uint32_t)sctp_audit_data[i][1]); 604 cnt++; 605 if ((cnt % 14) == 0) 606 SCTP_PRINTF("\n"); 607 } 608 for (i = 0; i < sctp_audit_indx; i++) { 609 if ((sctp_audit_data[i][0] == 0xe0) && 610 (sctp_audit_data[i][1] == 0x01)) { 611 cnt = 0; 612 SCTP_PRINTF("\n"); 613 } else if (sctp_audit_data[i][0] == 0xf0) { 614 cnt = 0; 615 SCTP_PRINTF("\n"); 616 } else if ((sctp_audit_data[i][0] == 0xc0) && 617 (sctp_audit_data[i][1] == 0x01)) { 618 SCTP_PRINTF("\n"); 619 cnt = 0; 620 } 621 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0], 622 (uint32_t)sctp_audit_data[i][1]); 623 cnt++; 624 if ((cnt % 14) == 0) 625 SCTP_PRINTF("\n"); 626 } 627 SCTP_PRINTF("\n"); 628 } 629 630 void 631 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 632 struct sctp_nets *net) 633 { 634 int resend_cnt, tot_out, rep, tot_book_cnt; 635 struct sctp_nets *lnet; 636 struct sctp_tmit_chunk *chk; 637 638 sctp_audit_data[sctp_audit_indx][0] = 0xAA; 639 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from; 640 sctp_audit_indx++; 641 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 642 sctp_audit_indx = 0; 643 } 644 if (inp == NULL) { 645 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 646 sctp_audit_data[sctp_audit_indx][1] = 0x01; 647 sctp_audit_indx++; 648 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 649 sctp_audit_indx = 0; 650 } 651 return; 652 } 653 if (stcb == NULL) { 654 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 655 sctp_audit_data[sctp_audit_indx][1] = 0x02; 656 sctp_audit_indx++; 657 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 658 sctp_audit_indx = 0; 659 } 660 return; 661 } 662 sctp_audit_data[sctp_audit_indx][0] = 0xA1; 663 sctp_audit_data[sctp_audit_indx][1] = 664 (0x000000ff & stcb->asoc.sent_queue_retran_cnt); 665 sctp_audit_indx++; 666 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 667 sctp_audit_indx = 0; 668 } 669 rep = 0; 670 tot_book_cnt = 0; 671 resend_cnt = tot_out = 0; 672 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 673 if (chk->sent == SCTP_DATAGRAM_RESEND) { 674 resend_cnt++; 675 } else if (chk->sent < SCTP_DATAGRAM_RESEND) { 676 tot_out += chk->book_size; 677 tot_book_cnt++; 678 } 679 } 680 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) { 681 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 682 sctp_audit_data[sctp_audit_indx][1] = 0xA1; 683 sctp_audit_indx++; 684 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 685 sctp_audit_indx = 0; 686 } 687 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n", 688 resend_cnt, stcb->asoc.sent_queue_retran_cnt); 689 rep = 1; 690 stcb->asoc.sent_queue_retran_cnt = resend_cnt; 691 sctp_audit_data[sctp_audit_indx][0] = 0xA2; 692 sctp_audit_data[sctp_audit_indx][1] = 693 (0x000000ff & stcb->asoc.sent_queue_retran_cnt); 694 sctp_audit_indx++; 695 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 696 sctp_audit_indx = 0; 697 } 698 } 699 if (tot_out != stcb->asoc.total_flight) { 700 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 701 sctp_audit_data[sctp_audit_indx][1] = 0xA2; 702 sctp_audit_indx++; 703 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 704 sctp_audit_indx = 0; 705 } 706 rep = 1; 707 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out, 708 (int)stcb->asoc.total_flight); 709 stcb->asoc.total_flight = tot_out; 710 } 711 if (tot_book_cnt != stcb->asoc.total_flight_count) { 712 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 713 sctp_audit_data[sctp_audit_indx][1] = 0xA5; 714 sctp_audit_indx++; 715 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 716 sctp_audit_indx = 0; 717 } 718 rep = 1; 719 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt); 720 721 stcb->asoc.total_flight_count = tot_book_cnt; 722 } 723 tot_out = 0; 724 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 725 tot_out += lnet->flight_size; 726 } 727 if (tot_out != stcb->asoc.total_flight) { 728 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 729 sctp_audit_data[sctp_audit_indx][1] = 0xA3; 730 sctp_audit_indx++; 731 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 732 sctp_audit_indx = 0; 733 } 734 rep = 1; 735 SCTP_PRINTF("real flight:%d net total was %d\n", 736 stcb->asoc.total_flight, tot_out); 737 /* now corrective action */ 738 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 739 tot_out = 0; 740 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 741 if ((chk->whoTo == lnet) && 742 (chk->sent < SCTP_DATAGRAM_RESEND)) { 743 tot_out += chk->book_size; 744 } 745 } 746 if (lnet->flight_size != tot_out) { 747 SCTP_PRINTF("net:%p flight was %d corrected to %d\n", 748 (void *)lnet, lnet->flight_size, 749 tot_out); 750 lnet->flight_size = tot_out; 751 } 752 } 753 } 754 if (rep) { 755 sctp_print_audit_report(); 756 } 757 } 758 759 void 760 sctp_audit_log(uint8_t ev, uint8_t fd) 761 { 762 763 sctp_audit_data[sctp_audit_indx][0] = ev; 764 sctp_audit_data[sctp_audit_indx][1] = fd; 765 sctp_audit_indx++; 766 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 767 sctp_audit_indx = 0; 768 } 769 } 770 771 #endif 772 773 /* 774 * The conversion from time to ticks and vice versa is done by rounding 775 * upwards. This way we can test in the code the time to be positive and 776 * know that this corresponds to a positive number of ticks. 777 */ 778 779 uint32_t 780 sctp_msecs_to_ticks(uint32_t msecs) 781 { 782 uint64_t temp; 783 uint32_t ticks; 784 785 if (hz == 1000) { 786 ticks = msecs; 787 } else { 788 temp = (((uint64_t)msecs * hz) + 999) / 1000; 789 if (temp > UINT32_MAX) { 790 ticks = UINT32_MAX; 791 } else { 792 ticks = (uint32_t)temp; 793 } 794 } 795 return (ticks); 796 } 797 798 uint32_t 799 sctp_ticks_to_msecs(uint32_t ticks) 800 { 801 uint64_t temp; 802 uint32_t msecs; 803 804 if (hz == 1000) { 805 msecs = ticks; 806 } else { 807 temp = (((uint64_t)ticks * 1000) + (hz - 1)) / hz; 808 if (temp > UINT32_MAX) { 809 msecs = UINT32_MAX; 810 } else { 811 msecs = (uint32_t)temp; 812 } 813 } 814 return (msecs); 815 } 816 817 uint32_t 818 sctp_secs_to_ticks(uint32_t secs) 819 { 820 uint64_t temp; 821 uint32_t ticks; 822 823 temp = (uint64_t)secs * hz; 824 if (temp > UINT32_MAX) { 825 ticks = UINT32_MAX; 826 } else { 827 ticks = (uint32_t)temp; 828 } 829 return (ticks); 830 } 831 832 uint32_t 833 sctp_ticks_to_secs(uint32_t ticks) 834 { 835 uint64_t temp; 836 uint32_t secs; 837 838 temp = ((uint64_t)ticks + (hz - 1)) / hz; 839 if (temp > UINT32_MAX) { 840 secs = UINT32_MAX; 841 } else { 842 secs = (uint32_t)temp; 843 } 844 return (secs); 845 } 846 847 /* 848 * sctp_stop_timers_for_shutdown() should be called 849 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT 850 * state to make sure that all timers are stopped. 851 */ 852 void 853 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb) 854 { 855 struct sctp_inpcb *inp; 856 struct sctp_nets *net; 857 858 inp = stcb->sctp_ep; 859 860 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL, 861 SCTP_FROM_SCTPUTIL + SCTP_LOC_12); 862 sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL, 863 SCTP_FROM_SCTPUTIL + SCTP_LOC_13); 864 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL, 865 SCTP_FROM_SCTPUTIL + SCTP_LOC_14); 866 sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL, 867 SCTP_FROM_SCTPUTIL + SCTP_LOC_15); 868 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 869 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 870 SCTP_FROM_SCTPUTIL + SCTP_LOC_16); 871 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, 872 SCTP_FROM_SCTPUTIL + SCTP_LOC_17); 873 } 874 } 875 876 void 877 sctp_stop_association_timers(struct sctp_tcb *stcb, bool stop_assoc_kill_timer) 878 { 879 struct sctp_inpcb *inp; 880 struct sctp_nets *net; 881 882 inp = stcb->sctp_ep; 883 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL, 884 SCTP_FROM_SCTPUTIL + SCTP_LOC_18); 885 sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL, 886 SCTP_FROM_SCTPUTIL + SCTP_LOC_19); 887 if (stop_assoc_kill_timer) { 888 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, 889 SCTP_FROM_SCTPUTIL + SCTP_LOC_20); 890 } 891 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL, 892 SCTP_FROM_SCTPUTIL + SCTP_LOC_21); 893 sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL, 894 SCTP_FROM_SCTPUTIL + SCTP_LOC_22); 895 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNGUARD, inp, stcb, NULL, 896 SCTP_FROM_SCTPUTIL + SCTP_LOC_23); 897 /* Mobility adaptation */ 898 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, inp, stcb, NULL, 899 SCTP_FROM_SCTPUTIL + SCTP_LOC_24); 900 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 901 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, inp, stcb, net, 902 SCTP_FROM_SCTPUTIL + SCTP_LOC_25); 903 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, net, 904 SCTP_FROM_SCTPUTIL + SCTP_LOC_26); 905 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWN, inp, stcb, net, 906 SCTP_FROM_SCTPUTIL + SCTP_LOC_27); 907 sctp_timer_stop(SCTP_TIMER_TYPE_COOKIE, inp, stcb, net, 908 SCTP_FROM_SCTPUTIL + SCTP_LOC_28); 909 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNACK, inp, stcb, net, 910 SCTP_FROM_SCTPUTIL + SCTP_LOC_29); 911 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 912 SCTP_FROM_SCTPUTIL + SCTP_LOC_30); 913 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, 914 SCTP_FROM_SCTPUTIL + SCTP_LOC_31); 915 } 916 } 917 918 /* 919 * A list of sizes based on typical mtu's, used only if next hop size not 920 * returned. These values MUST be multiples of 4 and MUST be ordered. 921 */ 922 static uint32_t sctp_mtu_sizes[] = { 923 68, 924 296, 925 508, 926 512, 927 544, 928 576, 929 1004, 930 1492, 931 1500, 932 1536, 933 2000, 934 2048, 935 4352, 936 4464, 937 8168, 938 17912, 939 32000, 940 65532 941 }; 942 943 /* 944 * Return the largest MTU in sctp_mtu_sizes smaller than val. 945 * If val is smaller than the minimum, just return the largest 946 * multiple of 4 smaller or equal to val. 947 * Ensure that the result is a multiple of 4. 948 */ 949 uint32_t 950 sctp_get_prev_mtu(uint32_t val) 951 { 952 uint32_t i; 953 954 val &= 0xfffffffc; 955 if (val <= sctp_mtu_sizes[0]) { 956 return (val); 957 } 958 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { 959 if (val <= sctp_mtu_sizes[i]) { 960 break; 961 } 962 } 963 KASSERT((sctp_mtu_sizes[i - 1] & 0x00000003) == 0, 964 ("sctp_mtu_sizes[%u] not a multiple of 4", i - 1)); 965 return (sctp_mtu_sizes[i - 1]); 966 } 967 968 /* 969 * Return the smallest MTU in sctp_mtu_sizes larger than val. 970 * If val is larger than the maximum, just return the largest multiple of 4 smaller 971 * or equal to val. 972 * Ensure that the result is a multiple of 4. 973 */ 974 uint32_t 975 sctp_get_next_mtu(uint32_t val) 976 { 977 /* select another MTU that is just bigger than this one */ 978 uint32_t i; 979 980 val &= 0xfffffffc; 981 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { 982 if (val < sctp_mtu_sizes[i]) { 983 KASSERT((sctp_mtu_sizes[i] & 0x00000003) == 0, 984 ("sctp_mtu_sizes[%u] not a multiple of 4", i)); 985 return (sctp_mtu_sizes[i]); 986 } 987 } 988 return (val); 989 } 990 991 void 992 sctp_fill_random_store(struct sctp_pcb *m) 993 { 994 /* 995 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and 996 * our counter. The result becomes our good random numbers and we 997 * then setup to give these out. Note that we do no locking to 998 * protect this. This is ok, since if competing folks call this we 999 * will get more gobbled gook in the random store which is what we 1000 * want. There is a danger that two guys will use the same random 1001 * numbers, but thats ok too since that is random as well :-> 1002 */ 1003 m->store_at = 0; 1004 (void)sctp_hmac(SCTP_HMAC, (uint8_t *)m->random_numbers, 1005 sizeof(m->random_numbers), (uint8_t *)&m->random_counter, 1006 sizeof(m->random_counter), (uint8_t *)m->random_store); 1007 m->random_counter++; 1008 } 1009 1010 uint32_t 1011 sctp_select_initial_TSN(struct sctp_pcb *inp) 1012 { 1013 /* 1014 * A true implementation should use random selection process to get 1015 * the initial stream sequence number, using RFC1750 as a good 1016 * guideline 1017 */ 1018 uint32_t x, *xp; 1019 uint8_t *p; 1020 int store_at, new_store; 1021 1022 if (inp->initial_sequence_debug != 0) { 1023 uint32_t ret; 1024 1025 ret = inp->initial_sequence_debug; 1026 inp->initial_sequence_debug++; 1027 return (ret); 1028 } 1029 retry: 1030 store_at = inp->store_at; 1031 new_store = store_at + sizeof(uint32_t); 1032 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) { 1033 new_store = 0; 1034 } 1035 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) { 1036 goto retry; 1037 } 1038 if (new_store == 0) { 1039 /* Refill the random store */ 1040 sctp_fill_random_store(inp); 1041 } 1042 p = &inp->random_store[store_at]; 1043 xp = (uint32_t *)p; 1044 x = *xp; 1045 return (x); 1046 } 1047 1048 uint32_t 1049 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check) 1050 { 1051 uint32_t x; 1052 struct timeval now; 1053 1054 if (check) { 1055 (void)SCTP_GETTIME_TIMEVAL(&now); 1056 } 1057 for (;;) { 1058 x = sctp_select_initial_TSN(&inp->sctp_ep); 1059 if (x == 0) { 1060 /* we never use 0 */ 1061 continue; 1062 } 1063 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) { 1064 break; 1065 } 1066 } 1067 return (x); 1068 } 1069 1070 int32_t 1071 sctp_map_assoc_state(int kernel_state) 1072 { 1073 int32_t user_state; 1074 1075 if (kernel_state & SCTP_STATE_WAS_ABORTED) { 1076 user_state = SCTP_CLOSED; 1077 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) { 1078 user_state = SCTP_SHUTDOWN_PENDING; 1079 } else { 1080 switch (kernel_state & SCTP_STATE_MASK) { 1081 case SCTP_STATE_EMPTY: 1082 user_state = SCTP_CLOSED; 1083 break; 1084 case SCTP_STATE_INUSE: 1085 user_state = SCTP_CLOSED; 1086 break; 1087 case SCTP_STATE_COOKIE_WAIT: 1088 user_state = SCTP_COOKIE_WAIT; 1089 break; 1090 case SCTP_STATE_COOKIE_ECHOED: 1091 user_state = SCTP_COOKIE_ECHOED; 1092 break; 1093 case SCTP_STATE_OPEN: 1094 user_state = SCTP_ESTABLISHED; 1095 break; 1096 case SCTP_STATE_SHUTDOWN_SENT: 1097 user_state = SCTP_SHUTDOWN_SENT; 1098 break; 1099 case SCTP_STATE_SHUTDOWN_RECEIVED: 1100 user_state = SCTP_SHUTDOWN_RECEIVED; 1101 break; 1102 case SCTP_STATE_SHUTDOWN_ACK_SENT: 1103 user_state = SCTP_SHUTDOWN_ACK_SENT; 1104 break; 1105 default: 1106 user_state = SCTP_CLOSED; 1107 break; 1108 } 1109 } 1110 return (user_state); 1111 } 1112 1113 int 1114 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 1115 uint32_t override_tag, uint32_t initial_tsn, uint32_t vrf_id, 1116 uint16_t o_strms) 1117 { 1118 struct sctp_association *asoc; 1119 1120 /* 1121 * Anything set to zero is taken care of by the allocation routine's 1122 * bzero 1123 */ 1124 1125 /* 1126 * Up front select what scoping to apply on addresses I tell my peer 1127 * Not sure what to do with these right now, we will need to come up 1128 * with a way to set them. We may need to pass them through from the 1129 * caller in the sctp_aloc_assoc() function. 1130 */ 1131 int i; 1132 #if defined(SCTP_DETAILED_STR_STATS) 1133 int j; 1134 #endif 1135 1136 asoc = &stcb->asoc; 1137 /* init all variables to a known value. */ 1138 SCTP_SET_STATE(stcb, SCTP_STATE_INUSE); 1139 asoc->max_burst = inp->sctp_ep.max_burst; 1140 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst; 1141 asoc->heart_beat_delay = sctp_ticks_to_msecs(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]); 1142 asoc->cookie_life = inp->sctp_ep.def_cookie_life; 1143 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off; 1144 asoc->ecn_supported = inp->ecn_supported; 1145 asoc->prsctp_supported = inp->prsctp_supported; 1146 asoc->auth_supported = inp->auth_supported; 1147 asoc->asconf_supported = inp->asconf_supported; 1148 asoc->reconfig_supported = inp->reconfig_supported; 1149 asoc->nrsack_supported = inp->nrsack_supported; 1150 asoc->pktdrop_supported = inp->pktdrop_supported; 1151 asoc->idata_supported = inp->idata_supported; 1152 asoc->sctp_cmt_pf = (uint8_t)0; 1153 asoc->sctp_frag_point = inp->sctp_frag_point; 1154 asoc->sctp_features = inp->sctp_features; 1155 asoc->default_dscp = inp->sctp_ep.default_dscp; 1156 asoc->max_cwnd = inp->max_cwnd; 1157 #ifdef INET6 1158 if (inp->sctp_ep.default_flowlabel) { 1159 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel; 1160 } else { 1161 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) { 1162 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep); 1163 asoc->default_flowlabel &= 0x000fffff; 1164 asoc->default_flowlabel |= 0x80000000; 1165 } else { 1166 asoc->default_flowlabel = 0; 1167 } 1168 } 1169 #endif 1170 asoc->sb_send_resv = 0; 1171 if (override_tag) { 1172 asoc->my_vtag = override_tag; 1173 } else { 1174 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1); 1175 } 1176 /* Get the nonce tags */ 1177 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0); 1178 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0); 1179 asoc->vrf_id = vrf_id; 1180 1181 #ifdef SCTP_ASOCLOG_OF_TSNS 1182 asoc->tsn_in_at = 0; 1183 asoc->tsn_out_at = 0; 1184 asoc->tsn_in_wrapped = 0; 1185 asoc->tsn_out_wrapped = 0; 1186 asoc->cumack_log_at = 0; 1187 asoc->cumack_log_atsnt = 0; 1188 #endif 1189 #ifdef SCTP_FS_SPEC_LOG 1190 asoc->fs_index = 0; 1191 #endif 1192 asoc->refcnt = 0; 1193 asoc->assoc_up_sent = 0; 1194 if (override_tag) { 1195 asoc->init_seq_number = initial_tsn; 1196 } else { 1197 asoc->init_seq_number = sctp_select_initial_TSN(&inp->sctp_ep); 1198 } 1199 asoc->asconf_seq_out = asoc->init_seq_number; 1200 asoc->str_reset_seq_out = asoc->init_seq_number; 1201 asoc->sending_seq = asoc->init_seq_number; 1202 asoc->asconf_seq_out_acked = asoc->init_seq_number - 1; 1203 /* we are optimisitic here */ 1204 asoc->peer_supports_nat = 0; 1205 asoc->sent_queue_retran_cnt = 0; 1206 1207 /* for CMT */ 1208 asoc->last_net_cmt_send_started = NULL; 1209 1210 asoc->last_acked_seq = asoc->init_seq_number - 1; 1211 asoc->advanced_peer_ack_point = asoc->init_seq_number - 1; 1212 asoc->asconf_seq_in = asoc->init_seq_number - 1; 1213 1214 /* here we are different, we hold the next one we expect */ 1215 asoc->str_reset_seq_in = asoc->init_seq_number; 1216 1217 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max; 1218 asoc->initial_rto = inp->sctp_ep.initial_rto; 1219 1220 asoc->default_mtu = inp->sctp_ep.default_mtu; 1221 asoc->max_init_times = inp->sctp_ep.max_init_times; 1222 asoc->max_send_times = inp->sctp_ep.max_send_times; 1223 asoc->def_net_failure = inp->sctp_ep.def_net_failure; 1224 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold; 1225 asoc->free_chunk_cnt = 0; 1226 1227 asoc->iam_blocking = 0; 1228 asoc->context = inp->sctp_context; 1229 asoc->local_strreset_support = inp->local_strreset_support; 1230 asoc->def_send = inp->def_send; 1231 asoc->delayed_ack = sctp_ticks_to_msecs(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); 1232 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq; 1233 asoc->pr_sctp_cnt = 0; 1234 asoc->total_output_queue_size = 0; 1235 1236 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 1237 asoc->scope.ipv6_addr_legal = 1; 1238 if (SCTP_IPV6_V6ONLY(inp) == 0) { 1239 asoc->scope.ipv4_addr_legal = 1; 1240 } else { 1241 asoc->scope.ipv4_addr_legal = 0; 1242 } 1243 } else { 1244 asoc->scope.ipv6_addr_legal = 0; 1245 asoc->scope.ipv4_addr_legal = 1; 1246 } 1247 1248 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND); 1249 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket); 1250 1251 asoc->smallest_mtu = inp->sctp_frag_point; 1252 asoc->minrto = inp->sctp_ep.sctp_minrto; 1253 asoc->maxrto = inp->sctp_ep.sctp_maxrto; 1254 1255 asoc->stream_locked_on = 0; 1256 asoc->ecn_echo_cnt_onq = 0; 1257 asoc->stream_locked = 0; 1258 1259 asoc->send_sack = 1; 1260 1261 LIST_INIT(&asoc->sctp_restricted_addrs); 1262 1263 TAILQ_INIT(&asoc->nets); 1264 TAILQ_INIT(&asoc->pending_reply_queue); 1265 TAILQ_INIT(&asoc->asconf_ack_sent); 1266 /* Setup to fill the hb random cache at first HB */ 1267 asoc->hb_random_idx = 4; 1268 1269 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time; 1270 1271 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module; 1272 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module]; 1273 1274 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module; 1275 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module]; 1276 1277 /* 1278 * Now the stream parameters, here we allocate space for all streams 1279 * that we request by default. 1280 */ 1281 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams = 1282 o_strms; 1283 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *, 1284 asoc->streamoutcnt * sizeof(struct sctp_stream_out), 1285 SCTP_M_STRMO); 1286 if (asoc->strmout == NULL) { 1287 /* big trouble no memory */ 1288 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1289 return (ENOMEM); 1290 } 1291 for (i = 0; i < asoc->streamoutcnt; i++) { 1292 /* 1293 * inbound side must be set to 0xffff, also NOTE when we get 1294 * the INIT-ACK back (for INIT sender) we MUST reduce the 1295 * count (streamoutcnt) but first check if we sent to any of 1296 * the upper streams that were dropped (if some were). Those 1297 * that were dropped must be notified to the upper layer as 1298 * failed to send. 1299 */ 1300 TAILQ_INIT(&asoc->strmout[i].outqueue); 1301 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL); 1302 asoc->strmout[i].chunks_on_queues = 0; 1303 #if defined(SCTP_DETAILED_STR_STATS) 1304 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) { 1305 asoc->strmout[i].abandoned_sent[j] = 0; 1306 asoc->strmout[i].abandoned_unsent[j] = 0; 1307 } 1308 #else 1309 asoc->strmout[i].abandoned_sent[0] = 0; 1310 asoc->strmout[i].abandoned_unsent[0] = 0; 1311 #endif 1312 asoc->strmout[i].next_mid_ordered = 0; 1313 asoc->strmout[i].next_mid_unordered = 0; 1314 asoc->strmout[i].sid = i; 1315 asoc->strmout[i].last_msg_incomplete = 0; 1316 asoc->strmout[i].state = SCTP_STREAM_OPENING; 1317 } 1318 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0); 1319 1320 /* Now the mapping array */ 1321 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY; 1322 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size, 1323 SCTP_M_MAP); 1324 if (asoc->mapping_array == NULL) { 1325 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1326 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1327 return (ENOMEM); 1328 } 1329 memset(asoc->mapping_array, 0, asoc->mapping_array_size); 1330 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size, 1331 SCTP_M_MAP); 1332 if (asoc->nr_mapping_array == NULL) { 1333 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1334 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1335 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1336 return (ENOMEM); 1337 } 1338 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size); 1339 1340 /* Now the init of the other outqueues */ 1341 TAILQ_INIT(&asoc->free_chunks); 1342 TAILQ_INIT(&asoc->control_send_queue); 1343 TAILQ_INIT(&asoc->asconf_send_queue); 1344 TAILQ_INIT(&asoc->send_queue); 1345 TAILQ_INIT(&asoc->sent_queue); 1346 TAILQ_INIT(&asoc->resetHead); 1347 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome; 1348 TAILQ_INIT(&asoc->asconf_queue); 1349 /* authentication fields */ 1350 asoc->authinfo.random = NULL; 1351 asoc->authinfo.active_keyid = 0; 1352 asoc->authinfo.assoc_key = NULL; 1353 asoc->authinfo.assoc_keyid = 0; 1354 asoc->authinfo.recv_key = NULL; 1355 asoc->authinfo.recv_keyid = 0; 1356 LIST_INIT(&asoc->shared_keys); 1357 asoc->marked_retrans = 0; 1358 asoc->port = inp->sctp_ep.port; 1359 asoc->timoinit = 0; 1360 asoc->timodata = 0; 1361 asoc->timosack = 0; 1362 asoc->timoshutdown = 0; 1363 asoc->timoheartbeat = 0; 1364 asoc->timocookie = 0; 1365 asoc->timoshutdownack = 0; 1366 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time); 1367 asoc->discontinuity_time = asoc->start_time; 1368 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) { 1369 asoc->abandoned_unsent[i] = 0; 1370 asoc->abandoned_sent[i] = 0; 1371 } 1372 /* 1373 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and 1374 * freed later when the association is freed. 1375 */ 1376 return (0); 1377 } 1378 1379 void 1380 sctp_print_mapping_array(struct sctp_association *asoc) 1381 { 1382 unsigned int i, limit; 1383 1384 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n", 1385 asoc->mapping_array_size, 1386 asoc->mapping_array_base_tsn, 1387 asoc->cumulative_tsn, 1388 asoc->highest_tsn_inside_map, 1389 asoc->highest_tsn_inside_nr_map); 1390 for (limit = asoc->mapping_array_size; limit > 1; limit--) { 1391 if (asoc->mapping_array[limit - 1] != 0) { 1392 break; 1393 } 1394 } 1395 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); 1396 for (i = 0; i < limit; i++) { 1397 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); 1398 } 1399 if (limit % 16) 1400 SCTP_PRINTF("\n"); 1401 for (limit = asoc->mapping_array_size; limit > 1; limit--) { 1402 if (asoc->nr_mapping_array[limit - 1]) { 1403 break; 1404 } 1405 } 1406 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); 1407 for (i = 0; i < limit; i++) { 1408 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); 1409 } 1410 if (limit % 16) 1411 SCTP_PRINTF("\n"); 1412 } 1413 1414 int 1415 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed) 1416 { 1417 /* mapping array needs to grow */ 1418 uint8_t *new_array1, *new_array2; 1419 uint32_t new_size; 1420 1421 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR); 1422 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP); 1423 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP); 1424 if ((new_array1 == NULL) || (new_array2 == NULL)) { 1425 /* can't get more, forget it */ 1426 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size); 1427 if (new_array1) { 1428 SCTP_FREE(new_array1, SCTP_M_MAP); 1429 } 1430 if (new_array2) { 1431 SCTP_FREE(new_array2, SCTP_M_MAP); 1432 } 1433 return (-1); 1434 } 1435 memset(new_array1, 0, new_size); 1436 memset(new_array2, 0, new_size); 1437 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size); 1438 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size); 1439 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1440 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP); 1441 asoc->mapping_array = new_array1; 1442 asoc->nr_mapping_array = new_array2; 1443 asoc->mapping_array_size = new_size; 1444 return (0); 1445 } 1446 1447 static void 1448 sctp_iterator_work(struct sctp_iterator *it) 1449 { 1450 struct epoch_tracker et; 1451 struct sctp_inpcb *tinp; 1452 int iteration_count = 0; 1453 int inp_skip = 0; 1454 int first_in = 1; 1455 1456 NET_EPOCH_ENTER(et); 1457 SCTP_INP_INFO_RLOCK(); 1458 SCTP_ITERATOR_LOCK(); 1459 sctp_it_ctl.cur_it = it; 1460 if (it->inp) { 1461 SCTP_INP_RLOCK(it->inp); 1462 SCTP_INP_DECR_REF(it->inp); 1463 } 1464 if (it->inp == NULL) { 1465 /* iterator is complete */ 1466 done_with_iterator: 1467 sctp_it_ctl.cur_it = NULL; 1468 SCTP_ITERATOR_UNLOCK(); 1469 SCTP_INP_INFO_RUNLOCK(); 1470 if (it->function_atend != NULL) { 1471 (*it->function_atend) (it->pointer, it->val); 1472 } 1473 SCTP_FREE(it, SCTP_M_ITER); 1474 NET_EPOCH_EXIT(et); 1475 return; 1476 } 1477 select_a_new_ep: 1478 if (first_in) { 1479 first_in = 0; 1480 } else { 1481 SCTP_INP_RLOCK(it->inp); 1482 } 1483 while (((it->pcb_flags) && 1484 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) || 1485 ((it->pcb_features) && 1486 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) { 1487 /* endpoint flags or features don't match, so keep looking */ 1488 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1489 SCTP_INP_RUNLOCK(it->inp); 1490 goto done_with_iterator; 1491 } 1492 tinp = it->inp; 1493 it->inp = LIST_NEXT(it->inp, sctp_list); 1494 it->stcb = NULL; 1495 SCTP_INP_RUNLOCK(tinp); 1496 if (it->inp == NULL) { 1497 goto done_with_iterator; 1498 } 1499 SCTP_INP_RLOCK(it->inp); 1500 } 1501 /* now go through each assoc which is in the desired state */ 1502 if (it->done_current_ep == 0) { 1503 if (it->function_inp != NULL) 1504 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val); 1505 it->done_current_ep = 1; 1506 } 1507 if (it->stcb == NULL) { 1508 /* run the per instance function */ 1509 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list); 1510 } 1511 if ((inp_skip) || it->stcb == NULL) { 1512 if (it->function_inp_end != NULL) { 1513 inp_skip = (*it->function_inp_end) (it->inp, 1514 it->pointer, 1515 it->val); 1516 } 1517 SCTP_INP_RUNLOCK(it->inp); 1518 goto no_stcb; 1519 } 1520 while (it->stcb) { 1521 SCTP_TCB_LOCK(it->stcb); 1522 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) { 1523 /* not in the right state... keep looking */ 1524 SCTP_TCB_UNLOCK(it->stcb); 1525 goto next_assoc; 1526 } 1527 /* see if we have limited out the iterator loop */ 1528 iteration_count++; 1529 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) { 1530 /* Pause to let others grab the lock */ 1531 atomic_add_int(&it->stcb->asoc.refcnt, 1); 1532 SCTP_TCB_UNLOCK(it->stcb); 1533 SCTP_INP_INCR_REF(it->inp); 1534 SCTP_INP_RUNLOCK(it->inp); 1535 SCTP_ITERATOR_UNLOCK(); 1536 SCTP_INP_INFO_RUNLOCK(); 1537 SCTP_INP_INFO_RLOCK(); 1538 SCTP_ITERATOR_LOCK(); 1539 if (sctp_it_ctl.iterator_flags) { 1540 /* We won't be staying here */ 1541 SCTP_INP_DECR_REF(it->inp); 1542 atomic_add_int(&it->stcb->asoc.refcnt, -1); 1543 if (sctp_it_ctl.iterator_flags & 1544 SCTP_ITERATOR_STOP_CUR_IT) { 1545 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT; 1546 goto done_with_iterator; 1547 } 1548 if (sctp_it_ctl.iterator_flags & 1549 SCTP_ITERATOR_STOP_CUR_INP) { 1550 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP; 1551 goto no_stcb; 1552 } 1553 /* If we reach here huh? */ 1554 SCTP_PRINTF("Unknown it ctl flag %x\n", 1555 sctp_it_ctl.iterator_flags); 1556 sctp_it_ctl.iterator_flags = 0; 1557 } 1558 SCTP_INP_RLOCK(it->inp); 1559 SCTP_INP_DECR_REF(it->inp); 1560 SCTP_TCB_LOCK(it->stcb); 1561 atomic_add_int(&it->stcb->asoc.refcnt, -1); 1562 iteration_count = 0; 1563 } 1564 KASSERT(it->inp == it->stcb->sctp_ep, 1565 ("%s: stcb %p does not belong to inp %p, but inp %p", 1566 __func__, it->stcb, it->inp, it->stcb->sctp_ep)); 1567 1568 /* run function on this one */ 1569 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val); 1570 1571 /* 1572 * we lie here, it really needs to have its own type but 1573 * first I must verify that this won't effect things :-0 1574 */ 1575 if (it->no_chunk_output == 0) 1576 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1577 1578 SCTP_TCB_UNLOCK(it->stcb); 1579 next_assoc: 1580 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist); 1581 if (it->stcb == NULL) { 1582 /* Run last function */ 1583 if (it->function_inp_end != NULL) { 1584 inp_skip = (*it->function_inp_end) (it->inp, 1585 it->pointer, 1586 it->val); 1587 } 1588 } 1589 } 1590 SCTP_INP_RUNLOCK(it->inp); 1591 no_stcb: 1592 /* done with all assocs on this endpoint, move on to next endpoint */ 1593 it->done_current_ep = 0; 1594 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1595 it->inp = NULL; 1596 } else { 1597 it->inp = LIST_NEXT(it->inp, sctp_list); 1598 } 1599 it->stcb = NULL; 1600 if (it->inp == NULL) { 1601 goto done_with_iterator; 1602 } 1603 goto select_a_new_ep; 1604 } 1605 1606 void 1607 sctp_iterator_worker(void) 1608 { 1609 struct sctp_iterator *it; 1610 1611 /* This function is called with the WQ lock in place */ 1612 sctp_it_ctl.iterator_running = 1; 1613 while ((it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead)) != NULL) { 1614 /* now lets work on this one */ 1615 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); 1616 SCTP_IPI_ITERATOR_WQ_UNLOCK(); 1617 CURVNET_SET(it->vn); 1618 sctp_iterator_work(it); 1619 CURVNET_RESTORE(); 1620 SCTP_IPI_ITERATOR_WQ_LOCK(); 1621 /* sa_ignore FREED_MEMORY */ 1622 } 1623 sctp_it_ctl.iterator_running = 0; 1624 return; 1625 } 1626 1627 static void 1628 sctp_handle_addr_wq(void) 1629 { 1630 /* deal with the ADDR wq from the rtsock calls */ 1631 struct sctp_laddr *wi, *nwi; 1632 struct sctp_asconf_iterator *asc; 1633 1634 SCTP_MALLOC(asc, struct sctp_asconf_iterator *, 1635 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT); 1636 if (asc == NULL) { 1637 /* Try later, no memory */ 1638 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, 1639 (struct sctp_inpcb *)NULL, 1640 (struct sctp_tcb *)NULL, 1641 (struct sctp_nets *)NULL); 1642 return; 1643 } 1644 LIST_INIT(&asc->list_of_work); 1645 asc->cnt = 0; 1646 1647 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) { 1648 LIST_REMOVE(wi, sctp_nxt_addr); 1649 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr); 1650 asc->cnt++; 1651 } 1652 1653 if (asc->cnt == 0) { 1654 SCTP_FREE(asc, SCTP_M_ASC_IT); 1655 } else { 1656 int ret; 1657 1658 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep, 1659 sctp_asconf_iterator_stcb, 1660 NULL, /* No ep end for boundall */ 1661 SCTP_PCB_FLAGS_BOUNDALL, 1662 SCTP_PCB_ANY_FEATURES, 1663 SCTP_ASOC_ANY_STATE, 1664 (void *)asc, 0, 1665 sctp_asconf_iterator_end, NULL, 0); 1666 if (ret) { 1667 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n"); 1668 /* 1669 * Freeing if we are stopping or put back on the 1670 * addr_wq. 1671 */ 1672 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) { 1673 sctp_asconf_iterator_end(asc, 0); 1674 } else { 1675 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) { 1676 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); 1677 } 1678 SCTP_FREE(asc, SCTP_M_ASC_IT); 1679 } 1680 } 1681 } 1682 } 1683 1684 /*- 1685 * The following table shows which pointers for the inp, stcb, or net are 1686 * stored for each timer after it was started. 1687 * 1688 *|Name |Timer |inp |stcb|net | 1689 *|-----------------------------|-----------------------------|----|----|----| 1690 *|SCTP_TIMER_TYPE_SEND |net->rxt_timer |Yes |Yes |Yes | 1691 *|SCTP_TIMER_TYPE_INIT |net->rxt_timer |Yes |Yes |Yes | 1692 *|SCTP_TIMER_TYPE_RECV |stcb->asoc.dack_timer |Yes |Yes |No | 1693 *|SCTP_TIMER_TYPE_SHUTDOWN |net->rxt_timer |Yes |Yes |Yes | 1694 *|SCTP_TIMER_TYPE_HEARTBEAT |net->hb_timer |Yes |Yes |Yes | 1695 *|SCTP_TIMER_TYPE_COOKIE |net->rxt_timer |Yes |Yes |Yes | 1696 *|SCTP_TIMER_TYPE_NEWCOOKIE |inp->sctp_ep.signature_change|Yes |No |No | 1697 *|SCTP_TIMER_TYPE_PATHMTURAISE |net->pmtu_timer |Yes |Yes |Yes | 1698 *|SCTP_TIMER_TYPE_SHUTDOWNACK |net->rxt_timer |Yes |Yes |Yes | 1699 *|SCTP_TIMER_TYPE_ASCONF |stcb->asoc.asconf_timer |Yes |Yes |Yes | 1700 *|SCTP_TIMER_TYPE_SHUTDOWNGUARD|stcb->asoc.shut_guard_timer |Yes |Yes |No | 1701 *|SCTP_TIMER_TYPE_AUTOCLOSE |stcb->asoc.autoclose_timer |Yes |Yes |No | 1702 *|SCTP_TIMER_TYPE_STRRESET |stcb->asoc.strreset_timer |Yes |Yes |No | 1703 *|SCTP_TIMER_TYPE_INPKILL |inp->sctp_ep.signature_change|Yes |No |No | 1704 *|SCTP_TIMER_TYPE_ASOCKILL |stcb->asoc.strreset_timer |Yes |Yes |No | 1705 *|SCTP_TIMER_TYPE_ADDR_WQ |SCTP_BASE_INFO(addr_wq_timer)|No |No |No | 1706 *|SCTP_TIMER_TYPE_PRIM_DELETED |stcb->asoc.delete_prim_timer |Yes |Yes |No | 1707 */ 1708 1709 void 1710 sctp_timeout_handler(void *t) 1711 { 1712 struct epoch_tracker et; 1713 struct timeval tv; 1714 struct sctp_inpcb *inp; 1715 struct sctp_tcb *stcb; 1716 struct sctp_nets *net; 1717 struct sctp_timer *tmr; 1718 struct mbuf *op_err; 1719 int type; 1720 int i, secret; 1721 bool did_output, released_asoc_reference; 1722 1723 /* 1724 * If inp, stcb or net are not NULL, then references to these were 1725 * added when the timer was started, and must be released before 1726 * this function returns. 1727 */ 1728 tmr = (struct sctp_timer *)t; 1729 inp = (struct sctp_inpcb *)tmr->ep; 1730 stcb = (struct sctp_tcb *)tmr->tcb; 1731 net = (struct sctp_nets *)tmr->net; 1732 CURVNET_SET((struct vnet *)tmr->vnet); 1733 NET_EPOCH_ENTER(et); 1734 released_asoc_reference = false; 1735 1736 #ifdef SCTP_AUDITING_ENABLED 1737 sctp_audit_log(0xF0, (uint8_t)tmr->type); 1738 sctp_auditing(3, inp, stcb, net); 1739 #endif 1740 1741 /* sanity checks... */ 1742 KASSERT(tmr->self == NULL || tmr->self == tmr, 1743 ("sctp_timeout_handler: tmr->self corrupted")); 1744 KASSERT(SCTP_IS_TIMER_TYPE_VALID(tmr->type), 1745 ("sctp_timeout_handler: invalid timer type %d", tmr->type)); 1746 type = tmr->type; 1747 KASSERT(stcb == NULL || stcb->sctp_ep == inp, 1748 ("sctp_timeout_handler of type %d: inp = %p, stcb->sctp_ep %p", 1749 type, stcb, stcb->sctp_ep)); 1750 tmr->stopped_from = 0xa001; 1751 if ((stcb != NULL) && (stcb->asoc.state == SCTP_STATE_EMPTY)) { 1752 SCTPDBG(SCTP_DEBUG_TIMER2, 1753 "Timer type %d handler exiting due to CLOSED association.\n", 1754 type); 1755 goto out_decr; 1756 } 1757 tmr->stopped_from = 0xa002; 1758 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d goes off.\n", type); 1759 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1760 SCTPDBG(SCTP_DEBUG_TIMER2, 1761 "Timer type %d handler exiting due to not being active.\n", 1762 type); 1763 goto out_decr; 1764 } 1765 1766 tmr->stopped_from = 0xa003; 1767 if (stcb) { 1768 SCTP_TCB_LOCK(stcb); 1769 /* 1770 * Release reference so that association can be freed if 1771 * necessary below. This is safe now that we have acquired 1772 * the lock. 1773 */ 1774 atomic_add_int(&stcb->asoc.refcnt, -1); 1775 released_asoc_reference = true; 1776 if ((type != SCTP_TIMER_TYPE_ASOCKILL) && 1777 ((stcb->asoc.state == SCTP_STATE_EMPTY) || 1778 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) { 1779 SCTPDBG(SCTP_DEBUG_TIMER2, 1780 "Timer type %d handler exiting due to CLOSED association.\n", 1781 type); 1782 goto out; 1783 } 1784 } else if (inp != NULL) { 1785 SCTP_INP_WLOCK(inp); 1786 } else { 1787 SCTP_WQ_ADDR_LOCK(); 1788 } 1789 1790 /* Record in stopped_from which timeout occurred. */ 1791 tmr->stopped_from = type; 1792 /* mark as being serviced now */ 1793 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 1794 /* 1795 * Callout has been rescheduled. 1796 */ 1797 goto out; 1798 } 1799 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1800 /* 1801 * Not active, so no action. 1802 */ 1803 goto out; 1804 } 1805 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer); 1806 1807 /* call the handler for the appropriate timer type */ 1808 switch (type) { 1809 case SCTP_TIMER_TYPE_SEND: 1810 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1811 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1812 type, inp, stcb, net)); 1813 SCTP_STAT_INCR(sctps_timodata); 1814 stcb->asoc.timodata++; 1815 stcb->asoc.num_send_timers_up--; 1816 if (stcb->asoc.num_send_timers_up < 0) { 1817 stcb->asoc.num_send_timers_up = 0; 1818 } 1819 SCTP_TCB_LOCK_ASSERT(stcb); 1820 if (sctp_t3rxt_timer(inp, stcb, net)) { 1821 /* no need to unlock on tcb its gone */ 1822 1823 goto out_decr; 1824 } 1825 SCTP_TCB_LOCK_ASSERT(stcb); 1826 #ifdef SCTP_AUDITING_ENABLED 1827 sctp_auditing(4, inp, stcb, net); 1828 #endif 1829 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1830 did_output = true; 1831 if ((stcb->asoc.num_send_timers_up == 0) && 1832 (stcb->asoc.sent_queue_cnt > 0)) { 1833 struct sctp_tmit_chunk *chk; 1834 1835 /* 1836 * Safeguard. If there on some on the sent queue 1837 * somewhere but no timers running something is 1838 * wrong... so we start a timer on the first chunk 1839 * on the send queue on whatever net it is sent to. 1840 */ 1841 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 1842 if (chk->whoTo != NULL) { 1843 break; 1844 } 1845 } 1846 if (chk != NULL) { 1847 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo); 1848 } 1849 } 1850 break; 1851 case SCTP_TIMER_TYPE_INIT: 1852 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1853 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1854 type, inp, stcb, net)); 1855 SCTP_STAT_INCR(sctps_timoinit); 1856 stcb->asoc.timoinit++; 1857 if (sctp_t1init_timer(inp, stcb, net)) { 1858 /* no need to unlock on tcb its gone */ 1859 goto out_decr; 1860 } 1861 did_output = false; 1862 break; 1863 case SCTP_TIMER_TYPE_RECV: 1864 KASSERT(inp != NULL && stcb != NULL && net == NULL, 1865 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1866 type, inp, stcb, net)); 1867 SCTP_STAT_INCR(sctps_timosack); 1868 stcb->asoc.timosack++; 1869 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); 1870 #ifdef SCTP_AUDITING_ENABLED 1871 sctp_auditing(4, inp, stcb, NULL); 1872 #endif 1873 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED); 1874 did_output = true; 1875 break; 1876 case SCTP_TIMER_TYPE_SHUTDOWN: 1877 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1878 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1879 type, inp, stcb, net)); 1880 SCTP_STAT_INCR(sctps_timoshutdown); 1881 stcb->asoc.timoshutdown++; 1882 if (sctp_shutdown_timer(inp, stcb, net)) { 1883 /* no need to unlock on tcb its gone */ 1884 goto out_decr; 1885 } 1886 #ifdef SCTP_AUDITING_ENABLED 1887 sctp_auditing(4, inp, stcb, net); 1888 #endif 1889 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED); 1890 did_output = true; 1891 break; 1892 case SCTP_TIMER_TYPE_HEARTBEAT: 1893 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1894 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1895 type, inp, stcb, net)); 1896 SCTP_STAT_INCR(sctps_timoheartbeat); 1897 stcb->asoc.timoheartbeat++; 1898 if (sctp_heartbeat_timer(inp, stcb, net)) { 1899 /* no need to unlock on tcb its gone */ 1900 goto out_decr; 1901 } 1902 #ifdef SCTP_AUDITING_ENABLED 1903 sctp_auditing(4, inp, stcb, net); 1904 #endif 1905 if (!(net->dest_state & SCTP_ADDR_NOHB)) { 1906 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); 1907 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED); 1908 did_output = true; 1909 } else { 1910 did_output = false; 1911 } 1912 break; 1913 case SCTP_TIMER_TYPE_COOKIE: 1914 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1915 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1916 type, inp, stcb, net)); 1917 SCTP_STAT_INCR(sctps_timocookie); 1918 stcb->asoc.timocookie++; 1919 if (sctp_cookie_timer(inp, stcb, net)) { 1920 /* no need to unlock on tcb its gone */ 1921 goto out_decr; 1922 } 1923 #ifdef SCTP_AUDITING_ENABLED 1924 sctp_auditing(4, inp, stcb, net); 1925 #endif 1926 /* 1927 * We consider T3 and Cookie timer pretty much the same with 1928 * respect to where from in chunk_output. 1929 */ 1930 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1931 did_output = true; 1932 break; 1933 case SCTP_TIMER_TYPE_NEWCOOKIE: 1934 KASSERT(inp != NULL && stcb == NULL && net == NULL, 1935 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1936 type, inp, stcb, net)); 1937 SCTP_STAT_INCR(sctps_timosecret); 1938 (void)SCTP_GETTIME_TIMEVAL(&tv); 1939 inp->sctp_ep.time_of_secret_change = (unsigned int)tv.tv_sec; 1940 inp->sctp_ep.last_secret_number = 1941 inp->sctp_ep.current_secret_number; 1942 inp->sctp_ep.current_secret_number++; 1943 if (inp->sctp_ep.current_secret_number >= 1944 SCTP_HOW_MANY_SECRETS) { 1945 inp->sctp_ep.current_secret_number = 0; 1946 } 1947 secret = (int)inp->sctp_ep.current_secret_number; 1948 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) { 1949 inp->sctp_ep.secret_key[secret][i] = 1950 sctp_select_initial_TSN(&inp->sctp_ep); 1951 } 1952 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL); 1953 did_output = false; 1954 break; 1955 case SCTP_TIMER_TYPE_PATHMTURAISE: 1956 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1957 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1958 type, inp, stcb, net)); 1959 SCTP_STAT_INCR(sctps_timopathmtu); 1960 sctp_pathmtu_timer(inp, stcb, net); 1961 did_output = false; 1962 break; 1963 case SCTP_TIMER_TYPE_SHUTDOWNACK: 1964 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1965 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1966 type, inp, stcb, net)); 1967 if (sctp_shutdownack_timer(inp, stcb, net)) { 1968 /* no need to unlock on tcb its gone */ 1969 goto out_decr; 1970 } 1971 SCTP_STAT_INCR(sctps_timoshutdownack); 1972 stcb->asoc.timoshutdownack++; 1973 #ifdef SCTP_AUDITING_ENABLED 1974 sctp_auditing(4, inp, stcb, net); 1975 #endif 1976 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED); 1977 did_output = true; 1978 break; 1979 case SCTP_TIMER_TYPE_ASCONF: 1980 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1981 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1982 type, inp, stcb, net)); 1983 SCTP_STAT_INCR(sctps_timoasconf); 1984 if (sctp_asconf_timer(inp, stcb, net)) { 1985 /* no need to unlock on tcb its gone */ 1986 goto out_decr; 1987 } 1988 #ifdef SCTP_AUDITING_ENABLED 1989 sctp_auditing(4, inp, stcb, net); 1990 #endif 1991 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED); 1992 did_output = true; 1993 break; 1994 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 1995 KASSERT(inp != NULL && stcb != NULL && net == NULL, 1996 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1997 type, inp, stcb, net)); 1998 SCTP_STAT_INCR(sctps_timoshutdownguard); 1999 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), 2000 "Shutdown guard timer expired"); 2001 sctp_abort_an_association(inp, stcb, op_err, true, SCTP_SO_NOT_LOCKED); 2002 /* no need to unlock on tcb its gone */ 2003 goto out_decr; 2004 case SCTP_TIMER_TYPE_AUTOCLOSE: 2005 KASSERT(inp != NULL && stcb != NULL && net == NULL, 2006 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2007 type, inp, stcb, net)); 2008 SCTP_STAT_INCR(sctps_timoautoclose); 2009 sctp_autoclose_timer(inp, stcb); 2010 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED); 2011 did_output = true; 2012 break; 2013 case SCTP_TIMER_TYPE_STRRESET: 2014 KASSERT(inp != NULL && stcb != NULL && net == NULL, 2015 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2016 type, inp, stcb, net)); 2017 SCTP_STAT_INCR(sctps_timostrmrst); 2018 if (sctp_strreset_timer(inp, stcb)) { 2019 /* no need to unlock on tcb its gone */ 2020 goto out_decr; 2021 } 2022 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED); 2023 did_output = true; 2024 break; 2025 case SCTP_TIMER_TYPE_INPKILL: 2026 KASSERT(inp != NULL && stcb == NULL && net == NULL, 2027 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2028 type, inp, stcb, net)); 2029 SCTP_STAT_INCR(sctps_timoinpkill); 2030 /* 2031 * special case, take away our increment since WE are the 2032 * killer 2033 */ 2034 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, 2035 SCTP_FROM_SCTPUTIL + SCTP_LOC_3); 2036 SCTP_INP_DECR_REF(inp); 2037 SCTP_INP_WUNLOCK(inp); 2038 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 2039 SCTP_CALLED_FROM_INPKILL_TIMER); 2040 inp = NULL; 2041 goto out_decr; 2042 case SCTP_TIMER_TYPE_ASOCKILL: 2043 KASSERT(inp != NULL && stcb != NULL && net == NULL, 2044 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2045 type, inp, stcb, net)); 2046 SCTP_STAT_INCR(sctps_timoassockill); 2047 /* Can we free it yet? */ 2048 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, 2049 SCTP_FROM_SCTPUTIL + SCTP_LOC_1); 2050 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 2051 SCTP_FROM_SCTPUTIL + SCTP_LOC_2); 2052 /* 2053 * free asoc, always unlocks (or destroy's) so prevent 2054 * duplicate unlock or unlock of a free mtx :-0 2055 */ 2056 stcb = NULL; 2057 goto out_decr; 2058 case SCTP_TIMER_TYPE_ADDR_WQ: 2059 KASSERT(inp == NULL && stcb == NULL && net == NULL, 2060 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2061 type, inp, stcb, net)); 2062 sctp_handle_addr_wq(); 2063 did_output = true; 2064 break; 2065 case SCTP_TIMER_TYPE_PRIM_DELETED: 2066 KASSERT(inp != NULL && stcb != NULL && net == NULL, 2067 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2068 type, inp, stcb, net)); 2069 SCTP_STAT_INCR(sctps_timodelprim); 2070 sctp_delete_prim_timer(inp, stcb); 2071 did_output = false; 2072 break; 2073 default: 2074 #ifdef INVARIANTS 2075 panic("Unknown timer type %d", type); 2076 #else 2077 goto out; 2078 #endif 2079 } 2080 #ifdef SCTP_AUDITING_ENABLED 2081 sctp_audit_log(0xF1, (uint8_t)type); 2082 if (inp != NULL) 2083 sctp_auditing(5, inp, stcb, net); 2084 #endif 2085 if (did_output && (stcb != NULL)) { 2086 /* 2087 * Now we need to clean up the control chunk chain if an 2088 * ECNE is on it. It must be marked as UNSENT again so next 2089 * call will continue to send it until such time that we get 2090 * a CWR, to remove it. It is, however, less likely that we 2091 * will find a ecn echo on the chain though. 2092 */ 2093 sctp_fix_ecn_echo(&stcb->asoc); 2094 } 2095 out: 2096 if (stcb != NULL) { 2097 SCTP_TCB_UNLOCK(stcb); 2098 } else if (inp != NULL) { 2099 SCTP_INP_WUNLOCK(inp); 2100 } else { 2101 SCTP_WQ_ADDR_UNLOCK(); 2102 } 2103 2104 out_decr: 2105 /* These reference counts were incremented in sctp_timer_start(). */ 2106 if (inp != NULL) { 2107 SCTP_INP_DECR_REF(inp); 2108 } 2109 if ((stcb != NULL) && !released_asoc_reference) { 2110 atomic_add_int(&stcb->asoc.refcnt, -1); 2111 } 2112 if (net != NULL) { 2113 sctp_free_remote_addr(net); 2114 } 2115 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d handler finished.\n", type); 2116 CURVNET_RESTORE(); 2117 NET_EPOCH_EXIT(et); 2118 } 2119 2120 /*- 2121 * The following table shows which parameters must be provided 2122 * when calling sctp_timer_start(). For parameters not being 2123 * provided, NULL must be used. 2124 * 2125 * |Name |inp |stcb|net | 2126 * |-----------------------------|----|----|----| 2127 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes | 2128 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes | 2129 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No | 2130 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes | 2131 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes | 2132 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes | 2133 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No | 2134 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes | 2135 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes | 2136 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |Yes | 2137 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No | 2138 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No | 2139 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |Yes | 2140 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No | 2141 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No | 2142 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No | 2143 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No | 2144 * 2145 */ 2146 2147 void 2148 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 2149 struct sctp_nets *net) 2150 { 2151 struct sctp_timer *tmr; 2152 uint32_t to_ticks; 2153 uint32_t rndval, jitter; 2154 2155 KASSERT(stcb == NULL || stcb->sctp_ep == inp, 2156 ("sctp_timer_start of type %d: inp = %p, stcb->sctp_ep %p", 2157 t_type, stcb, stcb->sctp_ep)); 2158 tmr = NULL; 2159 if (stcb != NULL) { 2160 SCTP_TCB_LOCK_ASSERT(stcb); 2161 } else if (inp != NULL) { 2162 SCTP_INP_WLOCK_ASSERT(inp); 2163 } else { 2164 SCTP_WQ_ADDR_LOCK_ASSERT(); 2165 } 2166 if (stcb != NULL) { 2167 /* 2168 * Don't restart timer on association that's about to be 2169 * killed. 2170 */ 2171 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) && 2172 (t_type != SCTP_TIMER_TYPE_ASOCKILL)) { 2173 SCTPDBG(SCTP_DEBUG_TIMER2, 2174 "Timer type %d not started: inp=%p, stcb=%p, net=%p (stcb deleted).\n", 2175 t_type, inp, stcb, net); 2176 return; 2177 } 2178 /* Don't restart timer on net that's been removed. */ 2179 if (net != NULL && (net->dest_state & SCTP_ADDR_BEING_DELETED)) { 2180 SCTPDBG(SCTP_DEBUG_TIMER2, 2181 "Timer type %d not started: inp=%p, stcb=%p, net=%p (net deleted).\n", 2182 t_type, inp, stcb, net); 2183 return; 2184 } 2185 } 2186 switch (t_type) { 2187 case SCTP_TIMER_TYPE_SEND: 2188 /* Here we use the RTO timer. */ 2189 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2190 #ifdef INVARIANTS 2191 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2192 t_type, inp, stcb, net); 2193 #else 2194 return; 2195 #endif 2196 } 2197 tmr = &net->rxt_timer; 2198 if (net->RTO == 0) { 2199 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2200 } else { 2201 to_ticks = sctp_msecs_to_ticks(net->RTO); 2202 } 2203 break; 2204 case SCTP_TIMER_TYPE_INIT: 2205 /* 2206 * Here we use the INIT timer default usually about 1 2207 * second. 2208 */ 2209 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2210 #ifdef INVARIANTS 2211 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2212 t_type, inp, stcb, net); 2213 #else 2214 return; 2215 #endif 2216 } 2217 tmr = &net->rxt_timer; 2218 if (net->RTO == 0) { 2219 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2220 } else { 2221 to_ticks = sctp_msecs_to_ticks(net->RTO); 2222 } 2223 break; 2224 case SCTP_TIMER_TYPE_RECV: 2225 /* 2226 * Here we use the Delayed-Ack timer value from the inp, 2227 * ususually about 200ms. 2228 */ 2229 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2230 #ifdef INVARIANTS 2231 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2232 t_type, inp, stcb, net); 2233 #else 2234 return; 2235 #endif 2236 } 2237 tmr = &stcb->asoc.dack_timer; 2238 to_ticks = sctp_msecs_to_ticks(stcb->asoc.delayed_ack); 2239 break; 2240 case SCTP_TIMER_TYPE_SHUTDOWN: 2241 /* Here we use the RTO of the destination. */ 2242 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2243 #ifdef INVARIANTS 2244 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2245 t_type, inp, stcb, net); 2246 #else 2247 return; 2248 #endif 2249 } 2250 tmr = &net->rxt_timer; 2251 if (net->RTO == 0) { 2252 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2253 } else { 2254 to_ticks = sctp_msecs_to_ticks(net->RTO); 2255 } 2256 break; 2257 case SCTP_TIMER_TYPE_HEARTBEAT: 2258 /* 2259 * The net is used here so that we can add in the RTO. Even 2260 * though we use a different timer. We also add the HB timer 2261 * PLUS a random jitter. 2262 */ 2263 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2264 #ifdef INVARIANTS 2265 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2266 t_type, inp, stcb, net); 2267 #else 2268 return; 2269 #endif 2270 } 2271 if ((net->dest_state & SCTP_ADDR_NOHB) && 2272 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) { 2273 SCTPDBG(SCTP_DEBUG_TIMER2, 2274 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n", 2275 t_type, inp, stcb, net); 2276 return; 2277 } 2278 tmr = &net->hb_timer; 2279 if (net->RTO == 0) { 2280 to_ticks = stcb->asoc.initial_rto; 2281 } else { 2282 to_ticks = net->RTO; 2283 } 2284 rndval = sctp_select_initial_TSN(&inp->sctp_ep); 2285 jitter = rndval % to_ticks; 2286 if (to_ticks > 1) { 2287 to_ticks >>= 1; 2288 } 2289 if (jitter < (UINT32_MAX - to_ticks)) { 2290 to_ticks += jitter; 2291 } else { 2292 to_ticks = UINT32_MAX; 2293 } 2294 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) && 2295 !(net->dest_state & SCTP_ADDR_PF)) { 2296 if (net->heart_beat_delay < (UINT32_MAX - to_ticks)) { 2297 to_ticks += net->heart_beat_delay; 2298 } else { 2299 to_ticks = UINT32_MAX; 2300 } 2301 } 2302 /* 2303 * Now we must convert the to_ticks that are now in ms to 2304 * ticks. 2305 */ 2306 to_ticks = sctp_msecs_to_ticks(to_ticks); 2307 break; 2308 case SCTP_TIMER_TYPE_COOKIE: 2309 /* 2310 * Here we can use the RTO timer from the network since one 2311 * RTT was complete. If a retransmission happened then we 2312 * will be using the RTO initial value. 2313 */ 2314 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2315 #ifdef INVARIANTS 2316 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2317 t_type, inp, stcb, net); 2318 #else 2319 return; 2320 #endif 2321 } 2322 tmr = &net->rxt_timer; 2323 if (net->RTO == 0) { 2324 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2325 } else { 2326 to_ticks = sctp_msecs_to_ticks(net->RTO); 2327 } 2328 break; 2329 case SCTP_TIMER_TYPE_NEWCOOKIE: 2330 /* 2331 * Nothing needed but the endpoint here ususually about 60 2332 * minutes. 2333 */ 2334 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) { 2335 #ifdef INVARIANTS 2336 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2337 t_type, inp, stcb, net); 2338 #else 2339 return; 2340 #endif 2341 } 2342 tmr = &inp->sctp_ep.signature_change; 2343 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE]; 2344 break; 2345 case SCTP_TIMER_TYPE_PATHMTURAISE: 2346 /* 2347 * Here we use the value found in the EP for PMTUD, 2348 * ususually about 10 minutes. 2349 */ 2350 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2351 #ifdef INVARIANTS 2352 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2353 t_type, inp, stcb, net); 2354 #else 2355 return; 2356 #endif 2357 } 2358 if (net->dest_state & SCTP_ADDR_NO_PMTUD) { 2359 SCTPDBG(SCTP_DEBUG_TIMER2, 2360 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n", 2361 t_type, inp, stcb, net); 2362 return; 2363 } 2364 tmr = &net->pmtu_timer; 2365 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU]; 2366 break; 2367 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2368 /* Here we use the RTO of the destination. */ 2369 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2370 #ifdef INVARIANTS 2371 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2372 t_type, inp, stcb, net); 2373 #else 2374 return; 2375 #endif 2376 } 2377 tmr = &net->rxt_timer; 2378 if (net->RTO == 0) { 2379 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2380 } else { 2381 to_ticks = sctp_msecs_to_ticks(net->RTO); 2382 } 2383 break; 2384 case SCTP_TIMER_TYPE_ASCONF: 2385 /* 2386 * Here the timer comes from the stcb but its value is from 2387 * the net's RTO. 2388 */ 2389 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2390 #ifdef INVARIANTS 2391 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2392 t_type, inp, stcb, net); 2393 #else 2394 return; 2395 #endif 2396 } 2397 tmr = &stcb->asoc.asconf_timer; 2398 if (net->RTO == 0) { 2399 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2400 } else { 2401 to_ticks = sctp_msecs_to_ticks(net->RTO); 2402 } 2403 break; 2404 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2405 /* 2406 * Here we use the endpoints shutdown guard timer usually 2407 * about 3 minutes. 2408 */ 2409 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2410 #ifdef INVARIANTS 2411 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2412 t_type, inp, stcb, net); 2413 #else 2414 return; 2415 #endif 2416 } 2417 tmr = &stcb->asoc.shut_guard_timer; 2418 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) { 2419 if (stcb->asoc.maxrto < UINT32_MAX / 5) { 2420 to_ticks = sctp_msecs_to_ticks(5 * stcb->asoc.maxrto); 2421 } else { 2422 to_ticks = sctp_msecs_to_ticks(UINT32_MAX); 2423 } 2424 } else { 2425 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN]; 2426 } 2427 break; 2428 case SCTP_TIMER_TYPE_AUTOCLOSE: 2429 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2430 #ifdef INVARIANTS 2431 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2432 t_type, inp, stcb, net); 2433 #else 2434 return; 2435 #endif 2436 } 2437 tmr = &stcb->asoc.autoclose_timer; 2438 to_ticks = stcb->asoc.sctp_autoclose_ticks; 2439 break; 2440 case SCTP_TIMER_TYPE_STRRESET: 2441 /* 2442 * Here the timer comes from the stcb but its value is from 2443 * the net's RTO. 2444 */ 2445 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2446 #ifdef INVARIANTS 2447 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2448 t_type, inp, stcb, net); 2449 #else 2450 return; 2451 #endif 2452 } 2453 tmr = &stcb->asoc.strreset_timer; 2454 if (net->RTO == 0) { 2455 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2456 } else { 2457 to_ticks = sctp_msecs_to_ticks(net->RTO); 2458 } 2459 break; 2460 case SCTP_TIMER_TYPE_INPKILL: 2461 /* 2462 * The inp is setup to die. We re-use the signature_chage 2463 * timer since that has stopped and we are in the GONE 2464 * state. 2465 */ 2466 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) { 2467 #ifdef INVARIANTS 2468 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2469 t_type, inp, stcb, net); 2470 #else 2471 return; 2472 #endif 2473 } 2474 tmr = &inp->sctp_ep.signature_change; 2475 to_ticks = sctp_msecs_to_ticks(SCTP_INP_KILL_TIMEOUT); 2476 break; 2477 case SCTP_TIMER_TYPE_ASOCKILL: 2478 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2479 #ifdef INVARIANTS 2480 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2481 t_type, inp, stcb, net); 2482 #else 2483 return; 2484 #endif 2485 } 2486 tmr = &stcb->asoc.strreset_timer; 2487 to_ticks = sctp_msecs_to_ticks(SCTP_ASOC_KILL_TIMEOUT); 2488 break; 2489 case SCTP_TIMER_TYPE_ADDR_WQ: 2490 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) { 2491 #ifdef INVARIANTS 2492 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2493 t_type, inp, stcb, net); 2494 #else 2495 return; 2496 #endif 2497 } 2498 /* Only 1 tick away :-) */ 2499 tmr = &SCTP_BASE_INFO(addr_wq_timer); 2500 to_ticks = SCTP_ADDRESS_TICK_DELAY; 2501 break; 2502 case SCTP_TIMER_TYPE_PRIM_DELETED: 2503 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2504 #ifdef INVARIANTS 2505 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2506 t_type, inp, stcb, net); 2507 #else 2508 return; 2509 #endif 2510 } 2511 tmr = &stcb->asoc.delete_prim_timer; 2512 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2513 break; 2514 default: 2515 #ifdef INVARIANTS 2516 panic("Unknown timer type %d", t_type); 2517 #else 2518 return; 2519 #endif 2520 } 2521 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type)); 2522 KASSERT(to_ticks > 0, ("to_ticks == 0 for timer type %d", t_type)); 2523 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 2524 /* 2525 * We do NOT allow you to have it already running. If it is, 2526 * we leave the current one up unchanged. 2527 */ 2528 SCTPDBG(SCTP_DEBUG_TIMER2, 2529 "Timer type %d already running: inp=%p, stcb=%p, net=%p.\n", 2530 t_type, inp, stcb, net); 2531 return; 2532 } 2533 /* At this point we can proceed. */ 2534 if (t_type == SCTP_TIMER_TYPE_SEND) { 2535 stcb->asoc.num_send_timers_up++; 2536 } 2537 tmr->stopped_from = 0; 2538 tmr->type = t_type; 2539 tmr->ep = (void *)inp; 2540 tmr->tcb = (void *)stcb; 2541 if (t_type == SCTP_TIMER_TYPE_STRRESET) { 2542 tmr->net = NULL; 2543 } else { 2544 tmr->net = (void *)net; 2545 } 2546 tmr->self = (void *)tmr; 2547 tmr->vnet = (void *)curvnet; 2548 tmr->ticks = sctp_get_tick_count(); 2549 if (SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr) == 0) { 2550 SCTPDBG(SCTP_DEBUG_TIMER2, 2551 "Timer type %d started: ticks=%u, inp=%p, stcb=%p, net=%p.\n", 2552 t_type, to_ticks, inp, stcb, net); 2553 /* 2554 * If this is a newly scheduled callout, as opposed to a 2555 * rescheduled one, increment relevant reference counts. 2556 */ 2557 if (tmr->ep != NULL) { 2558 SCTP_INP_INCR_REF(inp); 2559 } 2560 if (tmr->tcb != NULL) { 2561 atomic_add_int(&stcb->asoc.refcnt, 1); 2562 } 2563 if (tmr->net != NULL) { 2564 atomic_add_int(&net->ref_count, 1); 2565 } 2566 } else { 2567 /* 2568 * This should not happen, since we checked for pending 2569 * above. 2570 */ 2571 SCTPDBG(SCTP_DEBUG_TIMER2, 2572 "Timer type %d restarted: ticks=%u, inp=%p, stcb=%p, net=%p.\n", 2573 t_type, to_ticks, inp, stcb, net); 2574 } 2575 return; 2576 } 2577 2578 /*- 2579 * The following table shows which parameters must be provided 2580 * when calling sctp_timer_stop(). For parameters not being 2581 * provided, NULL must be used. 2582 * 2583 * |Name |inp |stcb|net | 2584 * |-----------------------------|----|----|----| 2585 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes | 2586 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes | 2587 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No | 2588 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes | 2589 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes | 2590 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes | 2591 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No | 2592 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes | 2593 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes | 2594 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |No | 2595 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No | 2596 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No | 2597 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |No | 2598 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No | 2599 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No | 2600 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No | 2601 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No | 2602 * 2603 */ 2604 2605 void 2606 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 2607 struct sctp_nets *net, uint32_t from) 2608 { 2609 struct sctp_timer *tmr; 2610 2611 KASSERT(stcb == NULL || stcb->sctp_ep == inp, 2612 ("sctp_timer_stop of type %d: inp = %p, stcb->sctp_ep %p", 2613 t_type, stcb, stcb->sctp_ep)); 2614 if (stcb != NULL) { 2615 SCTP_TCB_LOCK_ASSERT(stcb); 2616 } else if (inp != NULL) { 2617 SCTP_INP_WLOCK_ASSERT(inp); 2618 } else { 2619 SCTP_WQ_ADDR_LOCK_ASSERT(); 2620 } 2621 tmr = NULL; 2622 switch (t_type) { 2623 case SCTP_TIMER_TYPE_SEND: 2624 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2625 #ifdef INVARIANTS 2626 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2627 t_type, inp, stcb, net); 2628 #else 2629 return; 2630 #endif 2631 } 2632 tmr = &net->rxt_timer; 2633 break; 2634 case SCTP_TIMER_TYPE_INIT: 2635 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2636 #ifdef INVARIANTS 2637 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2638 t_type, inp, stcb, net); 2639 #else 2640 return; 2641 #endif 2642 } 2643 tmr = &net->rxt_timer; 2644 break; 2645 case SCTP_TIMER_TYPE_RECV: 2646 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2647 #ifdef INVARIANTS 2648 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2649 t_type, inp, stcb, net); 2650 #else 2651 return; 2652 #endif 2653 } 2654 tmr = &stcb->asoc.dack_timer; 2655 break; 2656 case SCTP_TIMER_TYPE_SHUTDOWN: 2657 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2658 #ifdef INVARIANTS 2659 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2660 t_type, inp, stcb, net); 2661 #else 2662 return; 2663 #endif 2664 } 2665 tmr = &net->rxt_timer; 2666 break; 2667 case SCTP_TIMER_TYPE_HEARTBEAT: 2668 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2669 #ifdef INVARIANTS 2670 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2671 t_type, inp, stcb, net); 2672 #else 2673 return; 2674 #endif 2675 } 2676 tmr = &net->hb_timer; 2677 break; 2678 case SCTP_TIMER_TYPE_COOKIE: 2679 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2680 #ifdef INVARIANTS 2681 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2682 t_type, inp, stcb, net); 2683 #else 2684 return; 2685 #endif 2686 } 2687 tmr = &net->rxt_timer; 2688 break; 2689 case SCTP_TIMER_TYPE_NEWCOOKIE: 2690 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) { 2691 #ifdef INVARIANTS 2692 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2693 t_type, inp, stcb, net); 2694 #else 2695 return; 2696 #endif 2697 } 2698 tmr = &inp->sctp_ep.signature_change; 2699 break; 2700 case SCTP_TIMER_TYPE_PATHMTURAISE: 2701 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2702 #ifdef INVARIANTS 2703 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2704 t_type, inp, stcb, net); 2705 #else 2706 return; 2707 #endif 2708 } 2709 tmr = &net->pmtu_timer; 2710 break; 2711 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2712 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2713 #ifdef INVARIANTS 2714 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2715 t_type, inp, stcb, net); 2716 #else 2717 return; 2718 #endif 2719 } 2720 tmr = &net->rxt_timer; 2721 break; 2722 case SCTP_TIMER_TYPE_ASCONF: 2723 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2724 #ifdef INVARIANTS 2725 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2726 t_type, inp, stcb, net); 2727 #else 2728 return; 2729 #endif 2730 } 2731 tmr = &stcb->asoc.asconf_timer; 2732 break; 2733 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2734 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2735 #ifdef INVARIANTS 2736 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2737 t_type, inp, stcb, net); 2738 #else 2739 return; 2740 #endif 2741 } 2742 tmr = &stcb->asoc.shut_guard_timer; 2743 break; 2744 case SCTP_TIMER_TYPE_AUTOCLOSE: 2745 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2746 #ifdef INVARIANTS 2747 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2748 t_type, inp, stcb, net); 2749 #else 2750 return; 2751 #endif 2752 } 2753 tmr = &stcb->asoc.autoclose_timer; 2754 break; 2755 case SCTP_TIMER_TYPE_STRRESET: 2756 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2757 #ifdef INVARIANTS 2758 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2759 t_type, inp, stcb, net); 2760 #else 2761 return; 2762 #endif 2763 } 2764 tmr = &stcb->asoc.strreset_timer; 2765 break; 2766 case SCTP_TIMER_TYPE_INPKILL: 2767 /* 2768 * The inp is setup to die. We re-use the signature_chage 2769 * timer since that has stopped and we are in the GONE 2770 * state. 2771 */ 2772 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) { 2773 #ifdef INVARIANTS 2774 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2775 t_type, inp, stcb, net); 2776 #else 2777 return; 2778 #endif 2779 } 2780 tmr = &inp->sctp_ep.signature_change; 2781 break; 2782 case SCTP_TIMER_TYPE_ASOCKILL: 2783 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2784 #ifdef INVARIANTS 2785 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2786 t_type, inp, stcb, net); 2787 #else 2788 return; 2789 #endif 2790 } 2791 tmr = &stcb->asoc.strreset_timer; 2792 break; 2793 case SCTP_TIMER_TYPE_ADDR_WQ: 2794 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) { 2795 #ifdef INVARIANTS 2796 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2797 t_type, inp, stcb, net); 2798 #else 2799 return; 2800 #endif 2801 } 2802 tmr = &SCTP_BASE_INFO(addr_wq_timer); 2803 break; 2804 case SCTP_TIMER_TYPE_PRIM_DELETED: 2805 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2806 #ifdef INVARIANTS 2807 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2808 t_type, inp, stcb, net); 2809 #else 2810 return; 2811 #endif 2812 } 2813 tmr = &stcb->asoc.delete_prim_timer; 2814 break; 2815 default: 2816 #ifdef INVARIANTS 2817 panic("Unknown timer type %d", t_type); 2818 #else 2819 return; 2820 #endif 2821 } 2822 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type)); 2823 if ((tmr->type != SCTP_TIMER_TYPE_NONE) && 2824 (tmr->type != t_type)) { 2825 /* 2826 * Ok we have a timer that is under joint use. Cookie timer 2827 * per chance with the SEND timer. We therefore are NOT 2828 * running the timer that the caller wants stopped. So just 2829 * return. 2830 */ 2831 SCTPDBG(SCTP_DEBUG_TIMER2, 2832 "Shared timer type %d not running: inp=%p, stcb=%p, net=%p.\n", 2833 t_type, inp, stcb, net); 2834 return; 2835 } 2836 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) { 2837 stcb->asoc.num_send_timers_up--; 2838 if (stcb->asoc.num_send_timers_up < 0) { 2839 stcb->asoc.num_send_timers_up = 0; 2840 } 2841 } 2842 tmr->self = NULL; 2843 tmr->stopped_from = from; 2844 if (SCTP_OS_TIMER_STOP(&tmr->timer) == 1) { 2845 KASSERT(tmr->ep == inp, 2846 ("sctp_timer_stop of type %d: inp = %p, tmr->inp = %p", 2847 t_type, inp, tmr->ep)); 2848 KASSERT(tmr->tcb == stcb, 2849 ("sctp_timer_stop of type %d: stcb = %p, tmr->stcb = %p", 2850 t_type, stcb, tmr->tcb)); 2851 KASSERT(((t_type == SCTP_TIMER_TYPE_ASCONF) && (tmr->net != NULL)) || 2852 ((t_type != SCTP_TIMER_TYPE_ASCONF) && (tmr->net == net)), 2853 ("sctp_timer_stop of type %d: net = %p, tmr->net = %p", 2854 t_type, net, tmr->net)); 2855 SCTPDBG(SCTP_DEBUG_TIMER2, 2856 "Timer type %d stopped: inp=%p, stcb=%p, net=%p.\n", 2857 t_type, inp, stcb, net); 2858 /* 2859 * If the timer was actually stopped, decrement reference 2860 * counts that were incremented in sctp_timer_start(). 2861 */ 2862 if (tmr->ep != NULL) { 2863 SCTP_INP_DECR_REF(inp); 2864 tmr->ep = NULL; 2865 } 2866 if (tmr->tcb != NULL) { 2867 atomic_add_int(&stcb->asoc.refcnt, -1); 2868 tmr->tcb = NULL; 2869 } 2870 if (tmr->net != NULL) { 2871 /* 2872 * Can't use net, since it doesn't work for 2873 * SCTP_TIMER_TYPE_ASCONF. 2874 */ 2875 sctp_free_remote_addr((struct sctp_nets *)tmr->net); 2876 tmr->net = NULL; 2877 } 2878 } else { 2879 SCTPDBG(SCTP_DEBUG_TIMER2, 2880 "Timer type %d not stopped: inp=%p, stcb=%p, net=%p.\n", 2881 t_type, inp, stcb, net); 2882 } 2883 return; 2884 } 2885 2886 uint32_t 2887 sctp_calculate_len(struct mbuf *m) 2888 { 2889 uint32_t tlen = 0; 2890 struct mbuf *at; 2891 2892 at = m; 2893 while (at) { 2894 tlen += SCTP_BUF_LEN(at); 2895 at = SCTP_BUF_NEXT(at); 2896 } 2897 return (tlen); 2898 } 2899 2900 void 2901 sctp_mtu_size_reset(struct sctp_inpcb *inp, 2902 struct sctp_association *asoc, uint32_t mtu) 2903 { 2904 /* 2905 * Reset the P-MTU size on this association, this involves changing 2906 * the asoc MTU, going through ANY chunk+overhead larger than mtu to 2907 * allow the DF flag to be cleared. 2908 */ 2909 struct sctp_tmit_chunk *chk; 2910 unsigned int eff_mtu, ovh; 2911 2912 asoc->smallest_mtu = mtu; 2913 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 2914 ovh = SCTP_MIN_OVERHEAD; 2915 } else { 2916 ovh = SCTP_MIN_V4_OVERHEAD; 2917 } 2918 eff_mtu = mtu - ovh; 2919 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) { 2920 if (chk->send_size > eff_mtu) { 2921 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 2922 } 2923 } 2924 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { 2925 if (chk->send_size > eff_mtu) { 2926 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 2927 } 2928 } 2929 } 2930 2931 /* 2932 * Given an association and starting time of the current RTT period, update 2933 * RTO in number of msecs. net should point to the current network. 2934 * Return 1, if an RTO update was performed, return 0 if no update was 2935 * performed due to invalid starting point. 2936 */ 2937 2938 int 2939 sctp_calculate_rto(struct sctp_tcb *stcb, 2940 struct sctp_association *asoc, 2941 struct sctp_nets *net, 2942 struct timeval *old, 2943 int rtt_from_sack) 2944 { 2945 struct timeval now; 2946 uint64_t rtt_us; /* RTT in us */ 2947 int32_t rtt; /* RTT in ms */ 2948 uint32_t new_rto; 2949 int first_measure = 0; 2950 2951 /************************/ 2952 /* 1. calculate new RTT */ 2953 /************************/ 2954 /* get the current time */ 2955 if (stcb->asoc.use_precise_time) { 2956 (void)SCTP_GETPTIME_TIMEVAL(&now); 2957 } else { 2958 (void)SCTP_GETTIME_TIMEVAL(&now); 2959 } 2960 if ((old->tv_sec > now.tv_sec) || 2961 ((old->tv_sec == now.tv_sec) && (old->tv_usec > now.tv_usec))) { 2962 /* The starting point is in the future. */ 2963 return (0); 2964 } 2965 timevalsub(&now, old); 2966 rtt_us = (uint64_t)1000000 * (uint64_t)now.tv_sec + (uint64_t)now.tv_usec; 2967 if (rtt_us > SCTP_RTO_UPPER_BOUND * 1000) { 2968 /* The RTT is larger than a sane value. */ 2969 return (0); 2970 } 2971 /* store the current RTT in us */ 2972 net->rtt = rtt_us; 2973 /* compute rtt in ms */ 2974 rtt = (int32_t)(net->rtt / 1000); 2975 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) { 2976 /* 2977 * Tell the CC module that a new update has just occurred 2978 * from a sack 2979 */ 2980 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now); 2981 } 2982 /* 2983 * Do we need to determine the lan? We do this only on sacks i.e. 2984 * RTT being determined from data not non-data (HB/INIT->INITACK). 2985 */ 2986 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) && 2987 (net->lan_type == SCTP_LAN_UNKNOWN)) { 2988 if (net->rtt > SCTP_LOCAL_LAN_RTT) { 2989 net->lan_type = SCTP_LAN_INTERNET; 2990 } else { 2991 net->lan_type = SCTP_LAN_LOCAL; 2992 } 2993 } 2994 2995 /***************************/ 2996 /* 2. update RTTVAR & SRTT */ 2997 /***************************/ 2998 /*- 2999 * Compute the scaled average lastsa and the 3000 * scaled variance lastsv as described in van Jacobson 3001 * Paper "Congestion Avoidance and Control", Annex A. 3002 * 3003 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt 3004 * (net->lastsv >> SCTP_RTT_VAR_SHIFT) is the rttvar 3005 */ 3006 if (net->RTO_measured) { 3007 rtt -= (net->lastsa >> SCTP_RTT_SHIFT); 3008 net->lastsa += rtt; 3009 if (rtt < 0) { 3010 rtt = -rtt; 3011 } 3012 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT); 3013 net->lastsv += rtt; 3014 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { 3015 rto_logging(net, SCTP_LOG_RTTVAR); 3016 } 3017 } else { 3018 /* First RTO measurment */ 3019 net->RTO_measured = 1; 3020 first_measure = 1; 3021 net->lastsa = rtt << SCTP_RTT_SHIFT; 3022 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT; 3023 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { 3024 rto_logging(net, SCTP_LOG_INITIAL_RTT); 3025 } 3026 } 3027 if (net->lastsv == 0) { 3028 net->lastsv = SCTP_CLOCK_GRANULARITY; 3029 } 3030 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv; 3031 if ((new_rto > SCTP_SAT_NETWORK_MIN) && 3032 (stcb->asoc.sat_network_lockout == 0)) { 3033 stcb->asoc.sat_network = 1; 3034 } else if ((!first_measure) && stcb->asoc.sat_network) { 3035 stcb->asoc.sat_network = 0; 3036 stcb->asoc.sat_network_lockout = 1; 3037 } 3038 /* bound it, per C6/C7 in Section 5.3.1 */ 3039 if (new_rto < stcb->asoc.minrto) { 3040 new_rto = stcb->asoc.minrto; 3041 } 3042 if (new_rto > stcb->asoc.maxrto) { 3043 new_rto = stcb->asoc.maxrto; 3044 } 3045 net->RTO = new_rto; 3046 return (1); 3047 } 3048 3049 /* 3050 * return a pointer to a contiguous piece of data from the given mbuf chain 3051 * starting at 'off' for 'len' bytes. If the desired piece spans more than 3052 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size 3053 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain. 3054 */ 3055 caddr_t 3056 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr) 3057 { 3058 uint32_t count; 3059 uint8_t *ptr; 3060 3061 ptr = in_ptr; 3062 if ((off < 0) || (len <= 0)) 3063 return (NULL); 3064 3065 /* find the desired start location */ 3066 while ((m != NULL) && (off > 0)) { 3067 if (off < SCTP_BUF_LEN(m)) 3068 break; 3069 off -= SCTP_BUF_LEN(m); 3070 m = SCTP_BUF_NEXT(m); 3071 } 3072 if (m == NULL) 3073 return (NULL); 3074 3075 /* is the current mbuf large enough (eg. contiguous)? */ 3076 if ((SCTP_BUF_LEN(m) - off) >= len) { 3077 return (mtod(m, caddr_t)+off); 3078 } else { 3079 /* else, it spans more than one mbuf, so save a temp copy... */ 3080 while ((m != NULL) && (len > 0)) { 3081 count = min(SCTP_BUF_LEN(m) - off, len); 3082 memcpy(ptr, mtod(m, caddr_t)+off, count); 3083 len -= count; 3084 ptr += count; 3085 off = 0; 3086 m = SCTP_BUF_NEXT(m); 3087 } 3088 if ((m == NULL) && (len > 0)) 3089 return (NULL); 3090 else 3091 return ((caddr_t)in_ptr); 3092 } 3093 } 3094 3095 struct sctp_paramhdr * 3096 sctp_get_next_param(struct mbuf *m, 3097 int offset, 3098 struct sctp_paramhdr *pull, 3099 int pull_limit) 3100 { 3101 /* This just provides a typed signature to Peter's Pull routine */ 3102 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit, 3103 (uint8_t *)pull)); 3104 } 3105 3106 struct mbuf * 3107 sctp_add_pad_tombuf(struct mbuf *m, int padlen) 3108 { 3109 struct mbuf *m_last; 3110 caddr_t dp; 3111 3112 if (padlen > 3) { 3113 return (NULL); 3114 } 3115 if (padlen <= M_TRAILINGSPACE(m)) { 3116 /* 3117 * The easy way. We hope the majority of the time we hit 3118 * here :) 3119 */ 3120 m_last = m; 3121 } else { 3122 /* Hard way we must grow the mbuf chain */ 3123 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA); 3124 if (m_last == NULL) { 3125 return (NULL); 3126 } 3127 SCTP_BUF_LEN(m_last) = 0; 3128 SCTP_BUF_NEXT(m_last) = NULL; 3129 SCTP_BUF_NEXT(m) = m_last; 3130 } 3131 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last); 3132 SCTP_BUF_LEN(m_last) += padlen; 3133 memset(dp, 0, padlen); 3134 return (m_last); 3135 } 3136 3137 struct mbuf * 3138 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf) 3139 { 3140 /* find the last mbuf in chain and pad it */ 3141 struct mbuf *m_at; 3142 3143 if (last_mbuf != NULL) { 3144 return (sctp_add_pad_tombuf(last_mbuf, padval)); 3145 } else { 3146 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) { 3147 if (SCTP_BUF_NEXT(m_at) == NULL) { 3148 return (sctp_add_pad_tombuf(m_at, padval)); 3149 } 3150 } 3151 } 3152 return (NULL); 3153 } 3154 3155 static void 3156 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb, 3157 uint16_t error, struct sctp_abort_chunk *abort, 3158 bool from_peer, bool timedout, int so_locked) 3159 { 3160 struct mbuf *m_notify; 3161 struct sctp_assoc_change *sac; 3162 struct sctp_queued_to_read *control; 3163 unsigned int notif_len; 3164 uint16_t abort_len; 3165 unsigned int i; 3166 3167 KASSERT(abort == NULL || from_peer, 3168 ("sctp_notify_assoc_change: ABORT chunk provided for local termination")); 3169 KASSERT(!from_peer || !timedout, 3170 ("sctp_notify_assoc_change: timeouts can only be local")); 3171 if (stcb == NULL) { 3172 return; 3173 } 3174 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) { 3175 notif_len = (unsigned int)sizeof(struct sctp_assoc_change); 3176 if (abort != NULL) { 3177 abort_len = ntohs(abort->ch.chunk_length); 3178 /* 3179 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be 3180 * contiguous. 3181 */ 3182 if (abort_len > SCTP_CHUNK_BUFFER_SIZE) { 3183 abort_len = SCTP_CHUNK_BUFFER_SIZE; 3184 } 3185 } else { 3186 abort_len = 0; 3187 } 3188 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { 3189 notif_len += SCTP_ASSOC_SUPPORTS_MAX; 3190 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { 3191 notif_len += abort_len; 3192 } 3193 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 3194 if (m_notify == NULL) { 3195 /* Retry with smaller value. */ 3196 notif_len = (unsigned int)sizeof(struct sctp_assoc_change); 3197 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 3198 if (m_notify == NULL) { 3199 goto set_error; 3200 } 3201 } 3202 SCTP_BUF_NEXT(m_notify) = NULL; 3203 sac = mtod(m_notify, struct sctp_assoc_change *); 3204 memset(sac, 0, notif_len); 3205 sac->sac_type = SCTP_ASSOC_CHANGE; 3206 sac->sac_flags = 0; 3207 sac->sac_length = sizeof(struct sctp_assoc_change); 3208 sac->sac_state = state; 3209 sac->sac_error = error; 3210 if (state == SCTP_CANT_STR_ASSOC) { 3211 sac->sac_outbound_streams = 0; 3212 sac->sac_inbound_streams = 0; 3213 } else { 3214 sac->sac_outbound_streams = stcb->asoc.streamoutcnt; 3215 sac->sac_inbound_streams = stcb->asoc.streamincnt; 3216 } 3217 sac->sac_assoc_id = sctp_get_associd(stcb); 3218 if (notif_len > sizeof(struct sctp_assoc_change)) { 3219 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { 3220 i = 0; 3221 if (stcb->asoc.prsctp_supported == 1) { 3222 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR; 3223 } 3224 if (stcb->asoc.auth_supported == 1) { 3225 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH; 3226 } 3227 if (stcb->asoc.asconf_supported == 1) { 3228 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF; 3229 } 3230 if (stcb->asoc.idata_supported == 1) { 3231 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING; 3232 } 3233 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF; 3234 if (stcb->asoc.reconfig_supported == 1) { 3235 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG; 3236 } 3237 sac->sac_length += i; 3238 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { 3239 memcpy(sac->sac_info, abort, abort_len); 3240 sac->sac_length += abort_len; 3241 } 3242 } 3243 SCTP_BUF_LEN(m_notify) = sac->sac_length; 3244 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3245 0, 0, stcb->asoc.context, 0, 0, 0, 3246 m_notify); 3247 if (control != NULL) { 3248 control->length = SCTP_BUF_LEN(m_notify); 3249 control->spec_flags = M_NOTIFICATION; 3250 /* not that we need this */ 3251 control->tail_mbuf = m_notify; 3252 sctp_add_to_readq(stcb->sctp_ep, stcb, 3253 control, 3254 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, 3255 so_locked); 3256 } else { 3257 sctp_m_freem(m_notify); 3258 } 3259 } 3260 /* 3261 * For 1-to-1 style sockets, we send up and error when an ABORT 3262 * comes in. 3263 */ 3264 set_error: 3265 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3266 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 3267 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { 3268 SOCK_LOCK(stcb->sctp_socket); 3269 if (from_peer) { 3270 if (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) { 3271 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED); 3272 stcb->sctp_socket->so_error = ECONNREFUSED; 3273 } else { 3274 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 3275 stcb->sctp_socket->so_error = ECONNRESET; 3276 } 3277 } else { 3278 if (timedout) { 3279 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT); 3280 stcb->sctp_socket->so_error = ETIMEDOUT; 3281 } else { 3282 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED); 3283 stcb->sctp_socket->so_error = ECONNABORTED; 3284 } 3285 } 3286 SOCK_UNLOCK(stcb->sctp_socket); 3287 } 3288 /* Wake ANY sleepers */ 3289 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3290 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 3291 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { 3292 socantrcvmore(stcb->sctp_socket); 3293 } 3294 sorwakeup(stcb->sctp_socket); 3295 sowwakeup(stcb->sctp_socket); 3296 } 3297 3298 static void 3299 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state, 3300 struct sockaddr *sa, uint32_t error, int so_locked) 3301 { 3302 struct mbuf *m_notify; 3303 struct sctp_paddr_change *spc; 3304 struct sctp_queued_to_read *control; 3305 3306 if ((stcb == NULL) || 3307 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) { 3308 /* event not enabled */ 3309 return; 3310 } 3311 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA); 3312 if (m_notify == NULL) 3313 return; 3314 SCTP_BUF_LEN(m_notify) = 0; 3315 spc = mtod(m_notify, struct sctp_paddr_change *); 3316 memset(spc, 0, sizeof(struct sctp_paddr_change)); 3317 spc->spc_type = SCTP_PEER_ADDR_CHANGE; 3318 spc->spc_flags = 0; 3319 spc->spc_length = sizeof(struct sctp_paddr_change); 3320 switch (sa->sa_family) { 3321 #ifdef INET 3322 case AF_INET: 3323 #ifdef INET6 3324 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { 3325 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa, 3326 (struct sockaddr_in6 *)&spc->spc_aaddr); 3327 } else { 3328 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); 3329 } 3330 #else 3331 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); 3332 #endif 3333 break; 3334 #endif 3335 #ifdef INET6 3336 case AF_INET6: 3337 { 3338 struct sockaddr_in6 *sin6; 3339 3340 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6)); 3341 3342 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr; 3343 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) { 3344 if (sin6->sin6_scope_id == 0) { 3345 /* recover scope_id for user */ 3346 (void)sa6_recoverscope(sin6); 3347 } else { 3348 /* clear embedded scope_id for user */ 3349 in6_clearscope(&sin6->sin6_addr); 3350 } 3351 } 3352 break; 3353 } 3354 #endif 3355 default: 3356 /* TSNH */ 3357 break; 3358 } 3359 spc->spc_state = state; 3360 spc->spc_error = error; 3361 spc->spc_assoc_id = sctp_get_associd(stcb); 3362 3363 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change); 3364 SCTP_BUF_NEXT(m_notify) = NULL; 3365 3366 /* append to socket */ 3367 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3368 0, 0, stcb->asoc.context, 0, 0, 0, 3369 m_notify); 3370 if (control == NULL) { 3371 /* no memory */ 3372 sctp_m_freem(m_notify); 3373 return; 3374 } 3375 control->length = SCTP_BUF_LEN(m_notify); 3376 control->spec_flags = M_NOTIFICATION; 3377 /* not that we need this */ 3378 control->tail_mbuf = m_notify; 3379 sctp_add_to_readq(stcb->sctp_ep, stcb, 3380 control, 3381 &stcb->sctp_socket->so_rcv, 1, 3382 SCTP_READ_LOCK_NOT_HELD, 3383 so_locked); 3384 } 3385 3386 static void 3387 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error, 3388 struct sctp_tmit_chunk *chk, int so_locked) 3389 { 3390 struct mbuf *m_notify; 3391 struct sctp_send_failed *ssf; 3392 struct sctp_send_failed_event *ssfe; 3393 struct sctp_queued_to_read *control; 3394 struct sctp_chunkhdr *chkhdr; 3395 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len; 3396 3397 if ((stcb == NULL) || 3398 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && 3399 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { 3400 /* event not enabled */ 3401 return; 3402 } 3403 3404 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3405 notifhdr_len = sizeof(struct sctp_send_failed_event); 3406 } else { 3407 notifhdr_len = sizeof(struct sctp_send_failed); 3408 } 3409 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA); 3410 if (m_notify == NULL) 3411 /* no space left */ 3412 return; 3413 SCTP_BUF_LEN(m_notify) = notifhdr_len; 3414 if (stcb->asoc.idata_supported) { 3415 chkhdr_len = sizeof(struct sctp_idata_chunk); 3416 } else { 3417 chkhdr_len = sizeof(struct sctp_data_chunk); 3418 } 3419 /* Use some defaults in case we can't access the chunk header */ 3420 if (chk->send_size >= chkhdr_len) { 3421 payload_len = chk->send_size - chkhdr_len; 3422 } else { 3423 payload_len = 0; 3424 } 3425 padding_len = 0; 3426 if (chk->data != NULL) { 3427 chkhdr = mtod(chk->data, struct sctp_chunkhdr *); 3428 if (chkhdr != NULL) { 3429 chk_len = ntohs(chkhdr->chunk_length); 3430 if ((chk_len >= chkhdr_len) && 3431 (chk->send_size >= chk_len) && 3432 (chk->send_size - chk_len < 4)) { 3433 padding_len = chk->send_size - chk_len; 3434 payload_len = chk->send_size - chkhdr_len - padding_len; 3435 } 3436 } 3437 } 3438 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3439 ssfe = mtod(m_notify, struct sctp_send_failed_event *); 3440 memset(ssfe, 0, notifhdr_len); 3441 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; 3442 if (sent) { 3443 ssfe->ssfe_flags = SCTP_DATA_SENT; 3444 } else { 3445 ssfe->ssfe_flags = SCTP_DATA_UNSENT; 3446 } 3447 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len); 3448 ssfe->ssfe_error = error; 3449 /* not exactly what the user sent in, but should be close :) */ 3450 ssfe->ssfe_info.snd_sid = chk->rec.data.sid; 3451 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags; 3452 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid; 3453 ssfe->ssfe_info.snd_context = chk->rec.data.context; 3454 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); 3455 ssfe->ssfe_assoc_id = sctp_get_associd(stcb); 3456 } else { 3457 ssf = mtod(m_notify, struct sctp_send_failed *); 3458 memset(ssf, 0, notifhdr_len); 3459 ssf->ssf_type = SCTP_SEND_FAILED; 3460 if (sent) { 3461 ssf->ssf_flags = SCTP_DATA_SENT; 3462 } else { 3463 ssf->ssf_flags = SCTP_DATA_UNSENT; 3464 } 3465 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len); 3466 ssf->ssf_error = error; 3467 /* not exactly what the user sent in, but should be close :) */ 3468 ssf->ssf_info.sinfo_stream = chk->rec.data.sid; 3469 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid; 3470 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags; 3471 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid; 3472 ssf->ssf_info.sinfo_context = chk->rec.data.context; 3473 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 3474 ssf->ssf_assoc_id = sctp_get_associd(stcb); 3475 } 3476 if (chk->data != NULL) { 3477 /* Trim off the sctp chunk header (it should be there) */ 3478 if (chk->send_size == chkhdr_len + payload_len + padding_len) { 3479 m_adj(chk->data, chkhdr_len); 3480 m_adj(chk->data, -padding_len); 3481 sctp_mbuf_crush(chk->data); 3482 chk->send_size -= (chkhdr_len + padding_len); 3483 } 3484 } 3485 SCTP_BUF_NEXT(m_notify) = chk->data; 3486 /* Steal off the mbuf */ 3487 chk->data = NULL; 3488 /* 3489 * For this case, we check the actual socket buffer, since the assoc 3490 * is going away we don't want to overfill the socket buffer for a 3491 * non-reader 3492 */ 3493 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3494 sctp_m_freem(m_notify); 3495 return; 3496 } 3497 /* append to socket */ 3498 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3499 0, 0, stcb->asoc.context, 0, 0, 0, 3500 m_notify); 3501 if (control == NULL) { 3502 /* no memory */ 3503 sctp_m_freem(m_notify); 3504 return; 3505 } 3506 control->length = SCTP_BUF_LEN(m_notify); 3507 control->spec_flags = M_NOTIFICATION; 3508 /* not that we need this */ 3509 control->tail_mbuf = m_notify; 3510 sctp_add_to_readq(stcb->sctp_ep, stcb, 3511 control, 3512 &stcb->sctp_socket->so_rcv, 1, 3513 SCTP_READ_LOCK_NOT_HELD, 3514 so_locked); 3515 } 3516 3517 static void 3518 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error, 3519 struct sctp_stream_queue_pending *sp, int so_locked) 3520 { 3521 struct mbuf *m_notify; 3522 struct sctp_send_failed *ssf; 3523 struct sctp_send_failed_event *ssfe; 3524 struct sctp_queued_to_read *control; 3525 int notifhdr_len; 3526 3527 if ((stcb == NULL) || 3528 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && 3529 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { 3530 /* event not enabled */ 3531 return; 3532 } 3533 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3534 notifhdr_len = sizeof(struct sctp_send_failed_event); 3535 } else { 3536 notifhdr_len = sizeof(struct sctp_send_failed); 3537 } 3538 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA); 3539 if (m_notify == NULL) { 3540 /* no space left */ 3541 return; 3542 } 3543 SCTP_BUF_LEN(m_notify) = notifhdr_len; 3544 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3545 ssfe = mtod(m_notify, struct sctp_send_failed_event *); 3546 memset(ssfe, 0, notifhdr_len); 3547 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; 3548 ssfe->ssfe_flags = SCTP_DATA_UNSENT; 3549 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length); 3550 ssfe->ssfe_error = error; 3551 /* not exactly what the user sent in, but should be close :) */ 3552 ssfe->ssfe_info.snd_sid = sp->sid; 3553 if (sp->some_taken) { 3554 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG; 3555 } else { 3556 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG; 3557 } 3558 ssfe->ssfe_info.snd_ppid = sp->ppid; 3559 ssfe->ssfe_info.snd_context = sp->context; 3560 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); 3561 ssfe->ssfe_assoc_id = sctp_get_associd(stcb); 3562 } else { 3563 ssf = mtod(m_notify, struct sctp_send_failed *); 3564 memset(ssf, 0, notifhdr_len); 3565 ssf->ssf_type = SCTP_SEND_FAILED; 3566 ssf->ssf_flags = SCTP_DATA_UNSENT; 3567 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length); 3568 ssf->ssf_error = error; 3569 /* not exactly what the user sent in, but should be close :) */ 3570 ssf->ssf_info.sinfo_stream = sp->sid; 3571 ssf->ssf_info.sinfo_ssn = 0; 3572 if (sp->some_taken) { 3573 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG; 3574 } else { 3575 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG; 3576 } 3577 ssf->ssf_info.sinfo_ppid = sp->ppid; 3578 ssf->ssf_info.sinfo_context = sp->context; 3579 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 3580 ssf->ssf_assoc_id = sctp_get_associd(stcb); 3581 } 3582 SCTP_BUF_NEXT(m_notify) = sp->data; 3583 3584 /* Steal off the mbuf */ 3585 sp->data = NULL; 3586 /* 3587 * For this case, we check the actual socket buffer, since the assoc 3588 * is going away we don't want to overfill the socket buffer for a 3589 * non-reader 3590 */ 3591 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3592 sctp_m_freem(m_notify); 3593 return; 3594 } 3595 /* append to socket */ 3596 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3597 0, 0, stcb->asoc.context, 0, 0, 0, 3598 m_notify); 3599 if (control == NULL) { 3600 /* no memory */ 3601 sctp_m_freem(m_notify); 3602 return; 3603 } 3604 control->length = SCTP_BUF_LEN(m_notify); 3605 control->spec_flags = M_NOTIFICATION; 3606 /* not that we need this */ 3607 control->tail_mbuf = m_notify; 3608 sctp_add_to_readq(stcb->sctp_ep, stcb, 3609 control, 3610 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); 3611 } 3612 3613 static void 3614 sctp_notify_adaptation_layer(struct sctp_tcb *stcb) 3615 { 3616 struct mbuf *m_notify; 3617 struct sctp_adaptation_event *sai; 3618 struct sctp_queued_to_read *control; 3619 3620 if ((stcb == NULL) || 3621 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) { 3622 /* event not enabled */ 3623 return; 3624 } 3625 3626 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA); 3627 if (m_notify == NULL) 3628 /* no space left */ 3629 return; 3630 SCTP_BUF_LEN(m_notify) = 0; 3631 sai = mtod(m_notify, struct sctp_adaptation_event *); 3632 memset(sai, 0, sizeof(struct sctp_adaptation_event)); 3633 sai->sai_type = SCTP_ADAPTATION_INDICATION; 3634 sai->sai_flags = 0; 3635 sai->sai_length = sizeof(struct sctp_adaptation_event); 3636 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation; 3637 sai->sai_assoc_id = sctp_get_associd(stcb); 3638 3639 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event); 3640 SCTP_BUF_NEXT(m_notify) = NULL; 3641 3642 /* append to socket */ 3643 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3644 0, 0, stcb->asoc.context, 0, 0, 0, 3645 m_notify); 3646 if (control == NULL) { 3647 /* no memory */ 3648 sctp_m_freem(m_notify); 3649 return; 3650 } 3651 control->length = SCTP_BUF_LEN(m_notify); 3652 control->spec_flags = M_NOTIFICATION; 3653 /* not that we need this */ 3654 control->tail_mbuf = m_notify; 3655 sctp_add_to_readq(stcb->sctp_ep, stcb, 3656 control, 3657 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3658 } 3659 3660 /* This always must be called with the read-queue LOCKED in the INP */ 3661 static void 3662 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error, 3663 uint32_t val, int so_locked) 3664 { 3665 struct mbuf *m_notify; 3666 struct sctp_pdapi_event *pdapi; 3667 struct sctp_queued_to_read *control; 3668 struct sockbuf *sb; 3669 3670 if ((stcb == NULL) || 3671 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) { 3672 /* event not enabled */ 3673 return; 3674 } 3675 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { 3676 return; 3677 } 3678 3679 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA); 3680 if (m_notify == NULL) 3681 /* no space left */ 3682 return; 3683 SCTP_BUF_LEN(m_notify) = 0; 3684 pdapi = mtod(m_notify, struct sctp_pdapi_event *); 3685 memset(pdapi, 0, sizeof(struct sctp_pdapi_event)); 3686 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT; 3687 pdapi->pdapi_flags = 0; 3688 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event); 3689 pdapi->pdapi_indication = error; 3690 pdapi->pdapi_stream = (val >> 16); 3691 pdapi->pdapi_seq = (val & 0x0000ffff); 3692 pdapi->pdapi_assoc_id = sctp_get_associd(stcb); 3693 3694 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event); 3695 SCTP_BUF_NEXT(m_notify) = NULL; 3696 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3697 0, 0, stcb->asoc.context, 0, 0, 0, 3698 m_notify); 3699 if (control == NULL) { 3700 /* no memory */ 3701 sctp_m_freem(m_notify); 3702 return; 3703 } 3704 control->length = SCTP_BUF_LEN(m_notify); 3705 control->spec_flags = M_NOTIFICATION; 3706 /* not that we need this */ 3707 control->tail_mbuf = m_notify; 3708 sb = &stcb->sctp_socket->so_rcv; 3709 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 3710 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify)); 3711 } 3712 sctp_sballoc(stcb, sb, m_notify); 3713 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 3714 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 3715 } 3716 control->end_added = 1; 3717 if (stcb->asoc.control_pdapi) 3718 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next); 3719 else { 3720 /* we really should not see this case */ 3721 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next); 3722 } 3723 if (stcb->sctp_ep && stcb->sctp_socket) { 3724 /* This should always be the case */ 3725 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); 3726 } 3727 } 3728 3729 static void 3730 sctp_notify_shutdown_event(struct sctp_tcb *stcb) 3731 { 3732 struct mbuf *m_notify; 3733 struct sctp_shutdown_event *sse; 3734 struct sctp_queued_to_read *control; 3735 3736 /* 3737 * For TCP model AND UDP connected sockets we will send an error up 3738 * when an SHUTDOWN completes 3739 */ 3740 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3741 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 3742 /* mark socket closed for read/write and wakeup! */ 3743 socantsendmore(stcb->sctp_socket); 3744 } 3745 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) { 3746 /* event not enabled */ 3747 return; 3748 } 3749 3750 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA); 3751 if (m_notify == NULL) 3752 /* no space left */ 3753 return; 3754 sse = mtod(m_notify, struct sctp_shutdown_event *); 3755 memset(sse, 0, sizeof(struct sctp_shutdown_event)); 3756 sse->sse_type = SCTP_SHUTDOWN_EVENT; 3757 sse->sse_flags = 0; 3758 sse->sse_length = sizeof(struct sctp_shutdown_event); 3759 sse->sse_assoc_id = sctp_get_associd(stcb); 3760 3761 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event); 3762 SCTP_BUF_NEXT(m_notify) = NULL; 3763 3764 /* append to socket */ 3765 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3766 0, 0, stcb->asoc.context, 0, 0, 0, 3767 m_notify); 3768 if (control == NULL) { 3769 /* no memory */ 3770 sctp_m_freem(m_notify); 3771 return; 3772 } 3773 control->length = SCTP_BUF_LEN(m_notify); 3774 control->spec_flags = M_NOTIFICATION; 3775 /* not that we need this */ 3776 control->tail_mbuf = m_notify; 3777 sctp_add_to_readq(stcb->sctp_ep, stcb, 3778 control, 3779 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3780 } 3781 3782 static void 3783 sctp_notify_sender_dry_event(struct sctp_tcb *stcb, 3784 int so_locked) 3785 { 3786 struct mbuf *m_notify; 3787 struct sctp_sender_dry_event *event; 3788 struct sctp_queued_to_read *control; 3789 3790 if ((stcb == NULL) || 3791 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) { 3792 /* event not enabled */ 3793 return; 3794 } 3795 3796 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA); 3797 if (m_notify == NULL) { 3798 /* no space left */ 3799 return; 3800 } 3801 SCTP_BUF_LEN(m_notify) = 0; 3802 event = mtod(m_notify, struct sctp_sender_dry_event *); 3803 memset(event, 0, sizeof(struct sctp_sender_dry_event)); 3804 event->sender_dry_type = SCTP_SENDER_DRY_EVENT; 3805 event->sender_dry_flags = 0; 3806 event->sender_dry_length = sizeof(struct sctp_sender_dry_event); 3807 event->sender_dry_assoc_id = sctp_get_associd(stcb); 3808 3809 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event); 3810 SCTP_BUF_NEXT(m_notify) = NULL; 3811 3812 /* append to socket */ 3813 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3814 0, 0, stcb->asoc.context, 0, 0, 0, 3815 m_notify); 3816 if (control == NULL) { 3817 /* no memory */ 3818 sctp_m_freem(m_notify); 3819 return; 3820 } 3821 control->length = SCTP_BUF_LEN(m_notify); 3822 control->spec_flags = M_NOTIFICATION; 3823 /* not that we need this */ 3824 control->tail_mbuf = m_notify; 3825 sctp_add_to_readq(stcb->sctp_ep, stcb, control, 3826 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); 3827 } 3828 3829 void 3830 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag) 3831 { 3832 struct mbuf *m_notify; 3833 struct sctp_queued_to_read *control; 3834 struct sctp_stream_change_event *stradd; 3835 3836 if ((stcb == NULL) || 3837 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) { 3838 /* event not enabled */ 3839 return; 3840 } 3841 if ((stcb->asoc.peer_req_out) && flag) { 3842 /* Peer made the request, don't tell the local user */ 3843 stcb->asoc.peer_req_out = 0; 3844 return; 3845 } 3846 stcb->asoc.peer_req_out = 0; 3847 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA); 3848 if (m_notify == NULL) 3849 /* no space left */ 3850 return; 3851 SCTP_BUF_LEN(m_notify) = 0; 3852 stradd = mtod(m_notify, struct sctp_stream_change_event *); 3853 memset(stradd, 0, sizeof(struct sctp_stream_change_event)); 3854 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT; 3855 stradd->strchange_flags = flag; 3856 stradd->strchange_length = sizeof(struct sctp_stream_change_event); 3857 stradd->strchange_assoc_id = sctp_get_associd(stcb); 3858 stradd->strchange_instrms = numberin; 3859 stradd->strchange_outstrms = numberout; 3860 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event); 3861 SCTP_BUF_NEXT(m_notify) = NULL; 3862 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3863 /* no space */ 3864 sctp_m_freem(m_notify); 3865 return; 3866 } 3867 /* append to socket */ 3868 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3869 0, 0, stcb->asoc.context, 0, 0, 0, 3870 m_notify); 3871 if (control == NULL) { 3872 /* no memory */ 3873 sctp_m_freem(m_notify); 3874 return; 3875 } 3876 control->length = SCTP_BUF_LEN(m_notify); 3877 control->spec_flags = M_NOTIFICATION; 3878 /* not that we need this */ 3879 control->tail_mbuf = m_notify; 3880 sctp_add_to_readq(stcb->sctp_ep, stcb, 3881 control, 3882 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3883 } 3884 3885 void 3886 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag) 3887 { 3888 struct mbuf *m_notify; 3889 struct sctp_queued_to_read *control; 3890 struct sctp_assoc_reset_event *strasoc; 3891 3892 if ((stcb == NULL) || 3893 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) { 3894 /* event not enabled */ 3895 return; 3896 } 3897 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA); 3898 if (m_notify == NULL) 3899 /* no space left */ 3900 return; 3901 SCTP_BUF_LEN(m_notify) = 0; 3902 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *); 3903 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event)); 3904 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT; 3905 strasoc->assocreset_flags = flag; 3906 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event); 3907 strasoc->assocreset_assoc_id = sctp_get_associd(stcb); 3908 strasoc->assocreset_local_tsn = sending_tsn; 3909 strasoc->assocreset_remote_tsn = recv_tsn; 3910 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event); 3911 SCTP_BUF_NEXT(m_notify) = NULL; 3912 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3913 /* no space */ 3914 sctp_m_freem(m_notify); 3915 return; 3916 } 3917 /* append to socket */ 3918 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3919 0, 0, stcb->asoc.context, 0, 0, 0, 3920 m_notify); 3921 if (control == NULL) { 3922 /* no memory */ 3923 sctp_m_freem(m_notify); 3924 return; 3925 } 3926 control->length = SCTP_BUF_LEN(m_notify); 3927 control->spec_flags = M_NOTIFICATION; 3928 /* not that we need this */ 3929 control->tail_mbuf = m_notify; 3930 sctp_add_to_readq(stcb->sctp_ep, stcb, 3931 control, 3932 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3933 } 3934 3935 static void 3936 sctp_notify_stream_reset(struct sctp_tcb *stcb, 3937 int number_entries, uint16_t *list, int flag) 3938 { 3939 struct mbuf *m_notify; 3940 struct sctp_queued_to_read *control; 3941 struct sctp_stream_reset_event *strreset; 3942 int len; 3943 3944 if ((stcb == NULL) || 3945 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) { 3946 /* event not enabled */ 3947 return; 3948 } 3949 3950 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); 3951 if (m_notify == NULL) 3952 /* no space left */ 3953 return; 3954 SCTP_BUF_LEN(m_notify) = 0; 3955 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t)); 3956 if (len > M_TRAILINGSPACE(m_notify)) { 3957 /* never enough room */ 3958 sctp_m_freem(m_notify); 3959 return; 3960 } 3961 strreset = mtod(m_notify, struct sctp_stream_reset_event *); 3962 memset(strreset, 0, len); 3963 strreset->strreset_type = SCTP_STREAM_RESET_EVENT; 3964 strreset->strreset_flags = flag; 3965 strreset->strreset_length = len; 3966 strreset->strreset_assoc_id = sctp_get_associd(stcb); 3967 if (number_entries) { 3968 int i; 3969 3970 for (i = 0; i < number_entries; i++) { 3971 strreset->strreset_stream_list[i] = ntohs(list[i]); 3972 } 3973 } 3974 SCTP_BUF_LEN(m_notify) = len; 3975 SCTP_BUF_NEXT(m_notify) = NULL; 3976 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3977 /* no space */ 3978 sctp_m_freem(m_notify); 3979 return; 3980 } 3981 /* append to socket */ 3982 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3983 0, 0, stcb->asoc.context, 0, 0, 0, 3984 m_notify); 3985 if (control == NULL) { 3986 /* no memory */ 3987 sctp_m_freem(m_notify); 3988 return; 3989 } 3990 control->length = SCTP_BUF_LEN(m_notify); 3991 control->spec_flags = M_NOTIFICATION; 3992 /* not that we need this */ 3993 control->tail_mbuf = m_notify; 3994 sctp_add_to_readq(stcb->sctp_ep, stcb, 3995 control, 3996 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3997 } 3998 3999 static void 4000 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk) 4001 { 4002 struct mbuf *m_notify; 4003 struct sctp_remote_error *sre; 4004 struct sctp_queued_to_read *control; 4005 unsigned int notif_len; 4006 uint16_t chunk_len; 4007 4008 if ((stcb == NULL) || 4009 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) { 4010 return; 4011 } 4012 if (chunk != NULL) { 4013 chunk_len = ntohs(chunk->ch.chunk_length); 4014 /* 4015 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be 4016 * contiguous. 4017 */ 4018 if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) { 4019 chunk_len = SCTP_CHUNK_BUFFER_SIZE; 4020 } 4021 } else { 4022 chunk_len = 0; 4023 } 4024 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len); 4025 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 4026 if (m_notify == NULL) { 4027 /* Retry with smaller value. */ 4028 notif_len = (unsigned int)sizeof(struct sctp_remote_error); 4029 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 4030 if (m_notify == NULL) { 4031 return; 4032 } 4033 } 4034 SCTP_BUF_NEXT(m_notify) = NULL; 4035 sre = mtod(m_notify, struct sctp_remote_error *); 4036 memset(sre, 0, notif_len); 4037 sre->sre_type = SCTP_REMOTE_ERROR; 4038 sre->sre_flags = 0; 4039 sre->sre_length = sizeof(struct sctp_remote_error); 4040 sre->sre_error = error; 4041 sre->sre_assoc_id = sctp_get_associd(stcb); 4042 if (notif_len > sizeof(struct sctp_remote_error)) { 4043 memcpy(sre->sre_data, chunk, chunk_len); 4044 sre->sre_length += chunk_len; 4045 } 4046 SCTP_BUF_LEN(m_notify) = sre->sre_length; 4047 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 4048 0, 0, stcb->asoc.context, 0, 0, 0, 4049 m_notify); 4050 if (control != NULL) { 4051 control->length = SCTP_BUF_LEN(m_notify); 4052 control->spec_flags = M_NOTIFICATION; 4053 /* not that we need this */ 4054 control->tail_mbuf = m_notify; 4055 sctp_add_to_readq(stcb->sctp_ep, stcb, 4056 control, 4057 &stcb->sctp_socket->so_rcv, 1, 4058 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 4059 } else { 4060 sctp_m_freem(m_notify); 4061 } 4062 } 4063 4064 void 4065 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb, 4066 uint32_t error, void *data, int so_locked) 4067 { 4068 if ((stcb == NULL) || 4069 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 4070 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 4071 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 4072 /* If the socket is gone we are out of here */ 4073 return; 4074 } 4075 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) { 4076 return; 4077 } 4078 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) || 4079 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) { 4080 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) || 4081 (notification == SCTP_NOTIFY_INTERFACE_UP) || 4082 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) { 4083 /* Don't report these in front states */ 4084 return; 4085 } 4086 } 4087 switch (notification) { 4088 case SCTP_NOTIFY_ASSOC_UP: 4089 if (stcb->asoc.assoc_up_sent == 0) { 4090 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, false, false, so_locked); 4091 stcb->asoc.assoc_up_sent = 1; 4092 } 4093 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) { 4094 sctp_notify_adaptation_layer(stcb); 4095 } 4096 if (stcb->asoc.auth_supported == 0) { 4097 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, 4098 NULL, so_locked); 4099 } 4100 break; 4101 case SCTP_NOTIFY_ASSOC_DOWN: 4102 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, false, false, so_locked); 4103 break; 4104 case SCTP_NOTIFY_INTERFACE_DOWN: 4105 { 4106 struct sctp_nets *net; 4107 4108 net = (struct sctp_nets *)data; 4109 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE, 4110 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 4111 break; 4112 } 4113 case SCTP_NOTIFY_INTERFACE_UP: 4114 { 4115 struct sctp_nets *net; 4116 4117 net = (struct sctp_nets *)data; 4118 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE, 4119 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 4120 break; 4121 } 4122 case SCTP_NOTIFY_INTERFACE_CONFIRMED: 4123 { 4124 struct sctp_nets *net; 4125 4126 net = (struct sctp_nets *)data; 4127 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED, 4128 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 4129 break; 4130 } 4131 case SCTP_NOTIFY_SPECIAL_SP_FAIL: 4132 sctp_notify_send_failed2(stcb, error, 4133 (struct sctp_stream_queue_pending *)data, so_locked); 4134 break; 4135 case SCTP_NOTIFY_SENT_DG_FAIL: 4136 sctp_notify_send_failed(stcb, 1, error, 4137 (struct sctp_tmit_chunk *)data, so_locked); 4138 break; 4139 case SCTP_NOTIFY_UNSENT_DG_FAIL: 4140 sctp_notify_send_failed(stcb, 0, error, 4141 (struct sctp_tmit_chunk *)data, so_locked); 4142 break; 4143 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION: 4144 { 4145 uint32_t val; 4146 4147 val = *((uint32_t *)data); 4148 4149 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked); 4150 break; 4151 } 4152 case SCTP_NOTIFY_ASSOC_LOC_ABORTED: 4153 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) || 4154 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) { 4155 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, false, so_locked); 4156 } else { 4157 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, false, so_locked); 4158 } 4159 break; 4160 case SCTP_NOTIFY_ASSOC_REM_ABORTED: 4161 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) || 4162 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) { 4163 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, true, false, so_locked); 4164 } else { 4165 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, true, false, so_locked); 4166 } 4167 break; 4168 case SCTP_NOTIFY_ASSOC_TIMEDOUT: 4169 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) || 4170 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) { 4171 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, true, so_locked); 4172 } else { 4173 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, true, so_locked); 4174 } 4175 break; 4176 case SCTP_NOTIFY_ASSOC_RESTART: 4177 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, false, false, so_locked); 4178 if (stcb->asoc.auth_supported == 0) { 4179 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, 4180 NULL, so_locked); 4181 } 4182 break; 4183 case SCTP_NOTIFY_STR_RESET_SEND: 4184 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN); 4185 break; 4186 case SCTP_NOTIFY_STR_RESET_RECV: 4187 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING); 4188 break; 4189 case SCTP_NOTIFY_STR_RESET_FAILED_OUT: 4190 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), 4191 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED)); 4192 break; 4193 case SCTP_NOTIFY_STR_RESET_DENIED_OUT: 4194 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), 4195 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED)); 4196 break; 4197 case SCTP_NOTIFY_STR_RESET_FAILED_IN: 4198 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), 4199 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED)); 4200 break; 4201 case SCTP_NOTIFY_STR_RESET_DENIED_IN: 4202 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), 4203 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED)); 4204 break; 4205 case SCTP_NOTIFY_ASCONF_ADD_IP: 4206 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data, 4207 error, so_locked); 4208 break; 4209 case SCTP_NOTIFY_ASCONF_DELETE_IP: 4210 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data, 4211 error, so_locked); 4212 break; 4213 case SCTP_NOTIFY_ASCONF_SET_PRIMARY: 4214 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data, 4215 error, so_locked); 4216 break; 4217 case SCTP_NOTIFY_PEER_SHUTDOWN: 4218 sctp_notify_shutdown_event(stcb); 4219 break; 4220 case SCTP_NOTIFY_AUTH_NEW_KEY: 4221 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error, 4222 (uint16_t)(uintptr_t)data, 4223 so_locked); 4224 break; 4225 case SCTP_NOTIFY_AUTH_FREE_KEY: 4226 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error, 4227 (uint16_t)(uintptr_t)data, 4228 so_locked); 4229 break; 4230 case SCTP_NOTIFY_NO_PEER_AUTH: 4231 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error, 4232 (uint16_t)(uintptr_t)data, 4233 so_locked); 4234 break; 4235 case SCTP_NOTIFY_SENDER_DRY: 4236 sctp_notify_sender_dry_event(stcb, so_locked); 4237 break; 4238 case SCTP_NOTIFY_REMOTE_ERROR: 4239 sctp_notify_remote_error(stcb, error, data); 4240 break; 4241 default: 4242 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n", 4243 __func__, notification, notification); 4244 break; 4245 } /* end switch */ 4246 } 4247 4248 void 4249 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int so_locked) 4250 { 4251 struct sctp_association *asoc; 4252 struct sctp_stream_out *outs; 4253 struct sctp_tmit_chunk *chk, *nchk; 4254 struct sctp_stream_queue_pending *sp, *nsp; 4255 int i; 4256 4257 if (stcb == NULL) { 4258 return; 4259 } 4260 asoc = &stcb->asoc; 4261 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) { 4262 /* already being freed */ 4263 return; 4264 } 4265 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 4266 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 4267 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) { 4268 return; 4269 } 4270 /* now through all the gunk freeing chunks */ 4271 /* sent queue SHOULD be empty */ 4272 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) { 4273 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next); 4274 asoc->sent_queue_cnt--; 4275 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) { 4276 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) { 4277 asoc->strmout[chk->rec.data.sid].chunks_on_queues--; 4278 #ifdef INVARIANTS 4279 } else { 4280 panic("No chunks on the queues for sid %u.", chk->rec.data.sid); 4281 #endif 4282 } 4283 } 4284 if (chk->data != NULL) { 4285 sctp_free_bufspace(stcb, asoc, chk, 1); 4286 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 4287 error, chk, so_locked); 4288 if (chk->data) { 4289 sctp_m_freem(chk->data); 4290 chk->data = NULL; 4291 } 4292 } 4293 sctp_free_a_chunk(stcb, chk, so_locked); 4294 /* sa_ignore FREED_MEMORY */ 4295 } 4296 /* pending send queue SHOULD be empty */ 4297 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { 4298 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next); 4299 asoc->send_queue_cnt--; 4300 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) { 4301 asoc->strmout[chk->rec.data.sid].chunks_on_queues--; 4302 #ifdef INVARIANTS 4303 } else { 4304 panic("No chunks on the queues for sid %u.", chk->rec.data.sid); 4305 #endif 4306 } 4307 if (chk->data != NULL) { 4308 sctp_free_bufspace(stcb, asoc, chk, 1); 4309 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 4310 error, chk, so_locked); 4311 if (chk->data) { 4312 sctp_m_freem(chk->data); 4313 chk->data = NULL; 4314 } 4315 } 4316 sctp_free_a_chunk(stcb, chk, so_locked); 4317 /* sa_ignore FREED_MEMORY */ 4318 } 4319 for (i = 0; i < asoc->streamoutcnt; i++) { 4320 /* For each stream */ 4321 outs = &asoc->strmout[i]; 4322 /* clean up any sends there */ 4323 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) { 4324 atomic_subtract_int(&asoc->stream_queue_cnt, 1); 4325 TAILQ_REMOVE(&outs->outqueue, sp, next); 4326 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1); 4327 sctp_free_spbufspace(stcb, asoc, sp); 4328 if (sp->data) { 4329 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb, 4330 error, (void *)sp, so_locked); 4331 if (sp->data) { 4332 sctp_m_freem(sp->data); 4333 sp->data = NULL; 4334 sp->tail_mbuf = NULL; 4335 sp->length = 0; 4336 } 4337 } 4338 if (sp->net) { 4339 sctp_free_remote_addr(sp->net); 4340 sp->net = NULL; 4341 } 4342 /* Free the chunk */ 4343 sctp_free_a_strmoq(stcb, sp, so_locked); 4344 /* sa_ignore FREED_MEMORY */ 4345 } 4346 } 4347 } 4348 4349 void 4350 sctp_abort_notification(struct sctp_tcb *stcb, bool from_peer, bool timeout, 4351 uint16_t error, struct sctp_abort_chunk *abort, 4352 int so_locked) 4353 { 4354 if (stcb == NULL) { 4355 return; 4356 } 4357 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || 4358 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 4359 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) { 4360 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED; 4361 } 4362 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 4363 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 4364 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 4365 return; 4366 } 4367 SCTP_TCB_SEND_LOCK(stcb); 4368 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED); 4369 /* Tell them we lost the asoc */ 4370 sctp_report_all_outbound(stcb, error, so_locked); 4371 SCTP_TCB_SEND_UNLOCK(stcb); 4372 if (from_peer) { 4373 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked); 4374 } else { 4375 if (timeout) { 4376 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_TIMEDOUT, stcb, error, abort, so_locked); 4377 } else { 4378 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked); 4379 } 4380 } 4381 } 4382 4383 void 4384 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 4385 struct mbuf *m, int iphlen, 4386 struct sockaddr *src, struct sockaddr *dst, 4387 struct sctphdr *sh, struct mbuf *op_err, 4388 uint8_t mflowtype, uint32_t mflowid, 4389 uint32_t vrf_id, uint16_t port) 4390 { 4391 struct sctp_gen_error_cause *cause; 4392 uint32_t vtag; 4393 uint16_t cause_code; 4394 4395 if (stcb != NULL) { 4396 vtag = stcb->asoc.peer_vtag; 4397 vrf_id = stcb->asoc.vrf_id; 4398 if (op_err != NULL) { 4399 /* Read the cause code from the error cause. */ 4400 cause = mtod(op_err, struct sctp_gen_error_cause *); 4401 cause_code = ntohs(cause->code); 4402 } else { 4403 cause_code = 0; 4404 } 4405 } else { 4406 vtag = 0; 4407 } 4408 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err, 4409 mflowtype, mflowid, inp->fibnum, 4410 vrf_id, port); 4411 if (stcb != NULL) { 4412 /* We have a TCB to abort, send notification too */ 4413 sctp_abort_notification(stcb, false, false, cause_code, NULL, SCTP_SO_NOT_LOCKED); 4414 /* Ok, now lets free it */ 4415 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 4416 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) || 4417 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 4418 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 4419 } 4420 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 4421 SCTP_FROM_SCTPUTIL + SCTP_LOC_4); 4422 } 4423 } 4424 #ifdef SCTP_ASOCLOG_OF_TSNS 4425 void 4426 sctp_print_out_track_log(struct sctp_tcb *stcb) 4427 { 4428 #ifdef NOSIY_PRINTS 4429 int i; 4430 4431 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code); 4432 SCTP_PRINTF("IN bound TSN log-aaa\n"); 4433 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) { 4434 SCTP_PRINTF("None rcvd\n"); 4435 goto none_in; 4436 } 4437 if (stcb->asoc.tsn_in_wrapped) { 4438 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) { 4439 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4440 stcb->asoc.in_tsnlog[i].tsn, 4441 stcb->asoc.in_tsnlog[i].strm, 4442 stcb->asoc.in_tsnlog[i].seq, 4443 stcb->asoc.in_tsnlog[i].flgs, 4444 stcb->asoc.in_tsnlog[i].sz); 4445 } 4446 } 4447 if (stcb->asoc.tsn_in_at) { 4448 for (i = 0; i < stcb->asoc.tsn_in_at; i++) { 4449 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4450 stcb->asoc.in_tsnlog[i].tsn, 4451 stcb->asoc.in_tsnlog[i].strm, 4452 stcb->asoc.in_tsnlog[i].seq, 4453 stcb->asoc.in_tsnlog[i].flgs, 4454 stcb->asoc.in_tsnlog[i].sz); 4455 } 4456 } 4457 none_in: 4458 SCTP_PRINTF("OUT bound TSN log-aaa\n"); 4459 if ((stcb->asoc.tsn_out_at == 0) && 4460 (stcb->asoc.tsn_out_wrapped == 0)) { 4461 SCTP_PRINTF("None sent\n"); 4462 } 4463 if (stcb->asoc.tsn_out_wrapped) { 4464 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) { 4465 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4466 stcb->asoc.out_tsnlog[i].tsn, 4467 stcb->asoc.out_tsnlog[i].strm, 4468 stcb->asoc.out_tsnlog[i].seq, 4469 stcb->asoc.out_tsnlog[i].flgs, 4470 stcb->asoc.out_tsnlog[i].sz); 4471 } 4472 } 4473 if (stcb->asoc.tsn_out_at) { 4474 for (i = 0; i < stcb->asoc.tsn_out_at; i++) { 4475 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4476 stcb->asoc.out_tsnlog[i].tsn, 4477 stcb->asoc.out_tsnlog[i].strm, 4478 stcb->asoc.out_tsnlog[i].seq, 4479 stcb->asoc.out_tsnlog[i].flgs, 4480 stcb->asoc.out_tsnlog[i].sz); 4481 } 4482 } 4483 #endif 4484 } 4485 #endif 4486 4487 void 4488 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 4489 struct mbuf *op_err, bool timedout, int so_locked) 4490 { 4491 struct sctp_gen_error_cause *cause; 4492 uint16_t cause_code; 4493 4494 if (stcb == NULL) { 4495 /* Got to have a TCB */ 4496 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4497 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 4498 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 4499 SCTP_CALLED_DIRECTLY_NOCMPSET); 4500 } 4501 } 4502 return; 4503 } 4504 if (op_err != NULL) { 4505 /* Read the cause code from the error cause. */ 4506 cause = mtod(op_err, struct sctp_gen_error_cause *); 4507 cause_code = ntohs(cause->code); 4508 } else { 4509 cause_code = 0; 4510 } 4511 /* notify the peer */ 4512 sctp_send_abort_tcb(stcb, op_err, so_locked); 4513 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 4514 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) || 4515 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 4516 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 4517 } 4518 /* notify the ulp */ 4519 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 4520 sctp_abort_notification(stcb, false, timedout, cause_code, NULL, so_locked); 4521 } 4522 /* now free the asoc */ 4523 #ifdef SCTP_ASOCLOG_OF_TSNS 4524 sctp_print_out_track_log(stcb); 4525 #endif 4526 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 4527 SCTP_FROM_SCTPUTIL + SCTP_LOC_5); 4528 } 4529 4530 void 4531 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, 4532 struct sockaddr *src, struct sockaddr *dst, 4533 struct sctphdr *sh, struct sctp_inpcb *inp, 4534 struct mbuf *cause, 4535 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, 4536 uint32_t vrf_id, uint16_t port) 4537 { 4538 struct sctp_chunkhdr *ch, chunk_buf; 4539 unsigned int chk_length; 4540 int contains_init_chunk; 4541 4542 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue); 4543 /* Generate a TO address for future reference */ 4544 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { 4545 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 4546 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 4547 SCTP_CALLED_DIRECTLY_NOCMPSET); 4548 } 4549 } 4550 contains_init_chunk = 0; 4551 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4552 sizeof(*ch), (uint8_t *)&chunk_buf); 4553 while (ch != NULL) { 4554 chk_length = ntohs(ch->chunk_length); 4555 if (chk_length < sizeof(*ch)) { 4556 /* break to abort land */ 4557 break; 4558 } 4559 switch (ch->chunk_type) { 4560 case SCTP_INIT: 4561 contains_init_chunk = 1; 4562 break; 4563 case SCTP_PACKET_DROPPED: 4564 /* we don't respond to pkt-dropped */ 4565 return; 4566 case SCTP_ABORT_ASSOCIATION: 4567 /* we don't respond with an ABORT to an ABORT */ 4568 return; 4569 case SCTP_SHUTDOWN_COMPLETE: 4570 /* 4571 * we ignore it since we are not waiting for it and 4572 * peer is gone 4573 */ 4574 return; 4575 case SCTP_SHUTDOWN_ACK: 4576 sctp_send_shutdown_complete2(src, dst, sh, 4577 mflowtype, mflowid, fibnum, 4578 vrf_id, port); 4579 return; 4580 default: 4581 break; 4582 } 4583 offset += SCTP_SIZE32(chk_length); 4584 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4585 sizeof(*ch), (uint8_t *)&chunk_buf); 4586 } 4587 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) || 4588 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) && 4589 (contains_init_chunk == 0))) { 4590 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause, 4591 mflowtype, mflowid, fibnum, 4592 vrf_id, port); 4593 } 4594 } 4595 4596 /* 4597 * check the inbound datagram to make sure there is not an abort inside it, 4598 * if there is return 1, else return 0. 4599 */ 4600 int 4601 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtag) 4602 { 4603 struct sctp_chunkhdr *ch; 4604 struct sctp_init_chunk *init_chk, chunk_buf; 4605 int offset; 4606 unsigned int chk_length; 4607 4608 offset = iphlen + sizeof(struct sctphdr); 4609 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), 4610 (uint8_t *)&chunk_buf); 4611 while (ch != NULL) { 4612 chk_length = ntohs(ch->chunk_length); 4613 if (chk_length < sizeof(*ch)) { 4614 /* packet is probably corrupt */ 4615 break; 4616 } 4617 /* we seem to be ok, is it an abort? */ 4618 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) { 4619 /* yep, tell them */ 4620 return (1); 4621 } 4622 if ((ch->chunk_type == SCTP_INITIATION) || 4623 (ch->chunk_type == SCTP_INITIATION_ACK)) { 4624 /* need to update the Vtag */ 4625 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 4626 offset, sizeof(struct sctp_init_chunk), (uint8_t *)&chunk_buf); 4627 if (init_chk != NULL) { 4628 *vtag = ntohl(init_chk->init.initiate_tag); 4629 } 4630 } 4631 /* Nope, move to the next chunk */ 4632 offset += SCTP_SIZE32(chk_length); 4633 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4634 sizeof(*ch), (uint8_t *)&chunk_buf); 4635 } 4636 return (0); 4637 } 4638 4639 /* 4640 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id 4641 * set (i.e. it's 0) so, create this function to compare link local scopes 4642 */ 4643 #ifdef INET6 4644 uint32_t 4645 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2) 4646 { 4647 struct sockaddr_in6 a, b; 4648 4649 /* save copies */ 4650 a = *addr1; 4651 b = *addr2; 4652 4653 if (a.sin6_scope_id == 0) 4654 if (sa6_recoverscope(&a)) { 4655 /* can't get scope, so can't match */ 4656 return (0); 4657 } 4658 if (b.sin6_scope_id == 0) 4659 if (sa6_recoverscope(&b)) { 4660 /* can't get scope, so can't match */ 4661 return (0); 4662 } 4663 if (a.sin6_scope_id != b.sin6_scope_id) 4664 return (0); 4665 4666 return (1); 4667 } 4668 4669 /* 4670 * returns a sockaddr_in6 with embedded scope recovered and removed 4671 */ 4672 struct sockaddr_in6 * 4673 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store) 4674 { 4675 /* check and strip embedded scope junk */ 4676 if (addr->sin6_family == AF_INET6) { 4677 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) { 4678 if (addr->sin6_scope_id == 0) { 4679 *store = *addr; 4680 if (!sa6_recoverscope(store)) { 4681 /* use the recovered scope */ 4682 addr = store; 4683 } 4684 } else { 4685 /* else, return the original "to" addr */ 4686 in6_clearscope(&addr->sin6_addr); 4687 } 4688 } 4689 } 4690 return (addr); 4691 } 4692 #endif 4693 4694 /* 4695 * are the two addresses the same? currently a "scopeless" check returns: 1 4696 * if same, 0 if not 4697 */ 4698 int 4699 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2) 4700 { 4701 4702 /* must be valid */ 4703 if (sa1 == NULL || sa2 == NULL) 4704 return (0); 4705 4706 /* must be the same family */ 4707 if (sa1->sa_family != sa2->sa_family) 4708 return (0); 4709 4710 switch (sa1->sa_family) { 4711 #ifdef INET6 4712 case AF_INET6: 4713 { 4714 /* IPv6 addresses */ 4715 struct sockaddr_in6 *sin6_1, *sin6_2; 4716 4717 sin6_1 = (struct sockaddr_in6 *)sa1; 4718 sin6_2 = (struct sockaddr_in6 *)sa2; 4719 return (SCTP6_ARE_ADDR_EQUAL(sin6_1, 4720 sin6_2)); 4721 } 4722 #endif 4723 #ifdef INET 4724 case AF_INET: 4725 { 4726 /* IPv4 addresses */ 4727 struct sockaddr_in *sin_1, *sin_2; 4728 4729 sin_1 = (struct sockaddr_in *)sa1; 4730 sin_2 = (struct sockaddr_in *)sa2; 4731 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr); 4732 } 4733 #endif 4734 default: 4735 /* we don't do these... */ 4736 return (0); 4737 } 4738 } 4739 4740 void 4741 sctp_print_address(struct sockaddr *sa) 4742 { 4743 #ifdef INET6 4744 char ip6buf[INET6_ADDRSTRLEN]; 4745 #endif 4746 4747 switch (sa->sa_family) { 4748 #ifdef INET6 4749 case AF_INET6: 4750 { 4751 struct sockaddr_in6 *sin6; 4752 4753 sin6 = (struct sockaddr_in6 *)sa; 4754 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n", 4755 ip6_sprintf(ip6buf, &sin6->sin6_addr), 4756 ntohs(sin6->sin6_port), 4757 sin6->sin6_scope_id); 4758 break; 4759 } 4760 #endif 4761 #ifdef INET 4762 case AF_INET: 4763 { 4764 struct sockaddr_in *sin; 4765 unsigned char *p; 4766 4767 sin = (struct sockaddr_in *)sa; 4768 p = (unsigned char *)&sin->sin_addr; 4769 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n", 4770 p[0], p[1], p[2], p[3], ntohs(sin->sin_port)); 4771 break; 4772 } 4773 #endif 4774 default: 4775 SCTP_PRINTF("?\n"); 4776 break; 4777 } 4778 } 4779 4780 void 4781 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 4782 struct sctp_inpcb *new_inp, 4783 struct sctp_tcb *stcb, 4784 int waitflags) 4785 { 4786 /* 4787 * go through our old INP and pull off any control structures that 4788 * belong to stcb and move then to the new inp. 4789 */ 4790 struct socket *old_so, *new_so; 4791 struct sctp_queued_to_read *control, *nctl; 4792 struct sctp_readhead tmp_queue; 4793 struct mbuf *m; 4794 int error = 0; 4795 4796 old_so = old_inp->sctp_socket; 4797 new_so = new_inp->sctp_socket; 4798 TAILQ_INIT(&tmp_queue); 4799 error = SOCK_IO_RECV_LOCK(old_so, waitflags); 4800 if (error) { 4801 /* 4802 * Gak, can't get I/O lock, we have a problem. data will be 4803 * left stranded.. and we don't dare look at it since the 4804 * other thread may be reading something. Oh well, its a 4805 * screwed up app that does a peeloff OR a accept while 4806 * reading from the main socket... actually its only the 4807 * peeloff() case, since I think read will fail on a 4808 * listening socket.. 4809 */ 4810 return; 4811 } 4812 /* lock the socket buffers */ 4813 SCTP_INP_READ_LOCK(old_inp); 4814 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) { 4815 /* Pull off all for out target stcb */ 4816 if (control->stcb == stcb) { 4817 /* remove it we want it */ 4818 TAILQ_REMOVE(&old_inp->read_queue, control, next); 4819 TAILQ_INSERT_TAIL(&tmp_queue, control, next); 4820 m = control->data; 4821 while (m) { 4822 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4823 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 4824 } 4825 sctp_sbfree(control, stcb, &old_so->so_rcv, m); 4826 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4827 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4828 } 4829 m = SCTP_BUF_NEXT(m); 4830 } 4831 } 4832 } 4833 SCTP_INP_READ_UNLOCK(old_inp); 4834 /* Remove the recv-lock on the old socket */ 4835 SOCK_IO_RECV_UNLOCK(old_so); 4836 /* Now we move them over to the new socket buffer */ 4837 SCTP_INP_READ_LOCK(new_inp); 4838 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) { 4839 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next); 4840 m = control->data; 4841 while (m) { 4842 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4843 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4844 } 4845 sctp_sballoc(stcb, &new_so->so_rcv, m); 4846 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4847 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4848 } 4849 m = SCTP_BUF_NEXT(m); 4850 } 4851 } 4852 SCTP_INP_READ_UNLOCK(new_inp); 4853 } 4854 4855 void 4856 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp, 4857 struct sctp_tcb *stcb, 4858 int so_locked 4859 SCTP_UNUSED 4860 ) 4861 { 4862 if ((inp != NULL) && (inp->sctp_socket != NULL)) { 4863 sctp_sorwakeup(inp, inp->sctp_socket); 4864 } 4865 } 4866 4867 void 4868 sctp_add_to_readq(struct sctp_inpcb *inp, 4869 struct sctp_tcb *stcb, 4870 struct sctp_queued_to_read *control, 4871 struct sockbuf *sb, 4872 int end, 4873 int inp_read_lock_held, 4874 int so_locked) 4875 { 4876 /* 4877 * Here we must place the control on the end of the socket read 4878 * queue AND increment sb_cc so that select will work properly on 4879 * read. 4880 */ 4881 struct mbuf *m, *prev = NULL; 4882 4883 if (inp == NULL) { 4884 /* Gak, TSNH!! */ 4885 #ifdef INVARIANTS 4886 panic("Gak, inp NULL on add_to_readq"); 4887 #endif 4888 return; 4889 } 4890 if (inp_read_lock_held == 0) 4891 SCTP_INP_READ_LOCK(inp); 4892 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { 4893 if (!control->on_strm_q) { 4894 sctp_free_remote_addr(control->whoFrom); 4895 if (control->data) { 4896 sctp_m_freem(control->data); 4897 control->data = NULL; 4898 } 4899 sctp_free_a_readq(stcb, control); 4900 } 4901 if (inp_read_lock_held == 0) 4902 SCTP_INP_READ_UNLOCK(inp); 4903 return; 4904 } 4905 if (!(control->spec_flags & M_NOTIFICATION)) { 4906 atomic_add_int(&inp->total_recvs, 1); 4907 if (!control->do_not_ref_stcb) { 4908 atomic_add_int(&stcb->total_recvs, 1); 4909 } 4910 } 4911 m = control->data; 4912 control->held_length = 0; 4913 control->length = 0; 4914 while (m) { 4915 if (SCTP_BUF_LEN(m) == 0) { 4916 /* Skip mbufs with NO length */ 4917 if (prev == NULL) { 4918 /* First one */ 4919 control->data = sctp_m_free(m); 4920 m = control->data; 4921 } else { 4922 SCTP_BUF_NEXT(prev) = sctp_m_free(m); 4923 m = SCTP_BUF_NEXT(prev); 4924 } 4925 if (m == NULL) { 4926 control->tail_mbuf = prev; 4927 } 4928 continue; 4929 } 4930 prev = m; 4931 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4932 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4933 } 4934 sctp_sballoc(stcb, sb, m); 4935 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4936 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4937 } 4938 atomic_add_int(&control->length, SCTP_BUF_LEN(m)); 4939 m = SCTP_BUF_NEXT(m); 4940 } 4941 if (prev != NULL) { 4942 control->tail_mbuf = prev; 4943 } else { 4944 /* Everything got collapsed out?? */ 4945 if (!control->on_strm_q) { 4946 sctp_free_remote_addr(control->whoFrom); 4947 sctp_free_a_readq(stcb, control); 4948 } 4949 if (inp_read_lock_held == 0) 4950 SCTP_INP_READ_UNLOCK(inp); 4951 return; 4952 } 4953 if (end) { 4954 control->end_added = 1; 4955 } 4956 TAILQ_INSERT_TAIL(&inp->read_queue, control, next); 4957 control->on_read_q = 1; 4958 if (inp_read_lock_held == 0) 4959 SCTP_INP_READ_UNLOCK(inp); 4960 if (inp && inp->sctp_socket) { 4961 sctp_wakeup_the_read_socket(inp, stcb, so_locked); 4962 } 4963 } 4964 4965 /*************HOLD THIS COMMENT FOR PATCH FILE OF 4966 *************ALTERNATE ROUTING CODE 4967 */ 4968 4969 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF 4970 *************ALTERNATE ROUTING CODE 4971 */ 4972 4973 struct mbuf * 4974 sctp_generate_cause(uint16_t code, char *info) 4975 { 4976 struct mbuf *m; 4977 struct sctp_gen_error_cause *cause; 4978 size_t info_len; 4979 uint16_t len; 4980 4981 if ((code == 0) || (info == NULL)) { 4982 return (NULL); 4983 } 4984 info_len = strlen(info); 4985 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) { 4986 return (NULL); 4987 } 4988 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len); 4989 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); 4990 if (m != NULL) { 4991 SCTP_BUF_LEN(m) = len; 4992 cause = mtod(m, struct sctp_gen_error_cause *); 4993 cause->code = htons(code); 4994 cause->length = htons(len); 4995 memcpy(cause->info, info, info_len); 4996 } 4997 return (m); 4998 } 4999 5000 struct mbuf * 5001 sctp_generate_no_user_data_cause(uint32_t tsn) 5002 { 5003 struct mbuf *m; 5004 struct sctp_error_no_user_data *no_user_data_cause; 5005 uint16_t len; 5006 5007 len = (uint16_t)sizeof(struct sctp_error_no_user_data); 5008 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); 5009 if (m != NULL) { 5010 SCTP_BUF_LEN(m) = len; 5011 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *); 5012 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA); 5013 no_user_data_cause->cause.length = htons(len); 5014 no_user_data_cause->tsn = htonl(tsn); 5015 } 5016 return (m); 5017 } 5018 5019 #ifdef SCTP_MBCNT_LOGGING 5020 void 5021 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc, 5022 struct sctp_tmit_chunk *tp1, int chk_cnt) 5023 { 5024 if (tp1->data == NULL) { 5025 return; 5026 } 5027 asoc->chunks_on_out_queue -= chk_cnt; 5028 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) { 5029 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE, 5030 asoc->total_output_queue_size, 5031 tp1->book_size, 5032 0, 5033 tp1->mbcnt); 5034 } 5035 if (asoc->total_output_queue_size >= tp1->book_size) { 5036 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size); 5037 } else { 5038 asoc->total_output_queue_size = 0; 5039 } 5040 5041 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) || 5042 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) { 5043 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { 5044 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size; 5045 } else { 5046 stcb->sctp_socket->so_snd.sb_cc = 0; 5047 } 5048 } 5049 } 5050 5051 #endif 5052 5053 int 5054 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1, 5055 uint8_t sent, int so_locked) 5056 { 5057 struct sctp_stream_out *strq; 5058 struct sctp_tmit_chunk *chk = NULL, *tp2; 5059 struct sctp_stream_queue_pending *sp; 5060 uint32_t mid; 5061 uint16_t sid; 5062 uint8_t foundeom = 0; 5063 int ret_sz = 0; 5064 int notdone; 5065 int do_wakeup_routine = 0; 5066 5067 sid = tp1->rec.data.sid; 5068 mid = tp1->rec.data.mid; 5069 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) { 5070 stcb->asoc.abandoned_sent[0]++; 5071 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++; 5072 stcb->asoc.strmout[sid].abandoned_sent[0]++; 5073 #if defined(SCTP_DETAILED_STR_STATS) 5074 stcb->asoc.strmout[sid].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++; 5075 #endif 5076 } else { 5077 stcb->asoc.abandoned_unsent[0]++; 5078 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++; 5079 stcb->asoc.strmout[sid].abandoned_unsent[0]++; 5080 #if defined(SCTP_DETAILED_STR_STATS) 5081 stcb->asoc.strmout[sid].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++; 5082 #endif 5083 } 5084 do { 5085 ret_sz += tp1->book_size; 5086 if (tp1->data != NULL) { 5087 if (tp1->sent < SCTP_DATAGRAM_RESEND) { 5088 sctp_flight_size_decrease(tp1); 5089 sctp_total_flight_decrease(stcb, tp1); 5090 } 5091 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 5092 stcb->asoc.peers_rwnd += tp1->send_size; 5093 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh); 5094 if (sent) { 5095 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); 5096 } else { 5097 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); 5098 } 5099 if (tp1->data) { 5100 sctp_m_freem(tp1->data); 5101 tp1->data = NULL; 5102 } 5103 do_wakeup_routine = 1; 5104 if (PR_SCTP_BUF_ENABLED(tp1->flags)) { 5105 stcb->asoc.sent_queue_cnt_removeable--; 5106 } 5107 } 5108 tp1->sent = SCTP_FORWARD_TSN_SKIP; 5109 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) == 5110 SCTP_DATA_NOT_FRAG) { 5111 /* not frag'ed we ae done */ 5112 notdone = 0; 5113 foundeom = 1; 5114 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 5115 /* end of frag, we are done */ 5116 notdone = 0; 5117 foundeom = 1; 5118 } else { 5119 /* 5120 * Its a begin or middle piece, we must mark all of 5121 * it 5122 */ 5123 notdone = 1; 5124 tp1 = TAILQ_NEXT(tp1, sctp_next); 5125 } 5126 } while (tp1 && notdone); 5127 if (foundeom == 0) { 5128 /* 5129 * The multi-part message was scattered across the send and 5130 * sent queue. 5131 */ 5132 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) { 5133 if ((tp1->rec.data.sid != sid) || 5134 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) { 5135 break; 5136 } 5137 /* 5138 * save to chk in case we have some on stream out 5139 * queue. If so and we have an un-transmitted one we 5140 * don't have to fudge the TSN. 5141 */ 5142 chk = tp1; 5143 ret_sz += tp1->book_size; 5144 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 5145 if (sent) { 5146 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); 5147 } else { 5148 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); 5149 } 5150 if (tp1->data) { 5151 sctp_m_freem(tp1->data); 5152 tp1->data = NULL; 5153 } 5154 /* No flight involved here book the size to 0 */ 5155 tp1->book_size = 0; 5156 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 5157 foundeom = 1; 5158 } 5159 do_wakeup_routine = 1; 5160 tp1->sent = SCTP_FORWARD_TSN_SKIP; 5161 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next); 5162 /* 5163 * on to the sent queue so we can wait for it to be 5164 * passed by. 5165 */ 5166 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1, 5167 sctp_next); 5168 stcb->asoc.send_queue_cnt--; 5169 stcb->asoc.sent_queue_cnt++; 5170 } 5171 } 5172 if (foundeom == 0) { 5173 /* 5174 * Still no eom found. That means there is stuff left on the 5175 * stream out queue.. yuck. 5176 */ 5177 SCTP_TCB_SEND_LOCK(stcb); 5178 strq = &stcb->asoc.strmout[sid]; 5179 sp = TAILQ_FIRST(&strq->outqueue); 5180 if (sp != NULL) { 5181 sp->discard_rest = 1; 5182 /* 5183 * We may need to put a chunk on the queue that 5184 * holds the TSN that would have been sent with the 5185 * LAST bit. 5186 */ 5187 if (chk == NULL) { 5188 /* Yep, we have to */ 5189 sctp_alloc_a_chunk(stcb, chk); 5190 if (chk == NULL) { 5191 /* 5192 * we are hosed. All we can do is 5193 * nothing.. which will cause an 5194 * abort if the peer is paying 5195 * attention. 5196 */ 5197 goto oh_well; 5198 } 5199 memset(chk, 0, sizeof(*chk)); 5200 chk->rec.data.rcv_flags = 0; 5201 chk->sent = SCTP_FORWARD_TSN_SKIP; 5202 chk->asoc = &stcb->asoc; 5203 if (stcb->asoc.idata_supported == 0) { 5204 if (sp->sinfo_flags & SCTP_UNORDERED) { 5205 chk->rec.data.mid = 0; 5206 } else { 5207 chk->rec.data.mid = strq->next_mid_ordered; 5208 } 5209 } else { 5210 if (sp->sinfo_flags & SCTP_UNORDERED) { 5211 chk->rec.data.mid = strq->next_mid_unordered; 5212 } else { 5213 chk->rec.data.mid = strq->next_mid_ordered; 5214 } 5215 } 5216 chk->rec.data.sid = sp->sid; 5217 chk->rec.data.ppid = sp->ppid; 5218 chk->rec.data.context = sp->context; 5219 chk->flags = sp->act_flags; 5220 chk->whoTo = NULL; 5221 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1); 5222 strq->chunks_on_queues++; 5223 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next); 5224 stcb->asoc.sent_queue_cnt++; 5225 stcb->asoc.pr_sctp_cnt++; 5226 } 5227 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG; 5228 if (sp->sinfo_flags & SCTP_UNORDERED) { 5229 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED; 5230 } 5231 if (stcb->asoc.idata_supported == 0) { 5232 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) { 5233 strq->next_mid_ordered++; 5234 } 5235 } else { 5236 if (sp->sinfo_flags & SCTP_UNORDERED) { 5237 strq->next_mid_unordered++; 5238 } else { 5239 strq->next_mid_ordered++; 5240 } 5241 } 5242 oh_well: 5243 if (sp->data) { 5244 /* 5245 * Pull any data to free up the SB and allow 5246 * sender to "add more" while we will throw 5247 * away :-) 5248 */ 5249 sctp_free_spbufspace(stcb, &stcb->asoc, sp); 5250 ret_sz += sp->length; 5251 do_wakeup_routine = 1; 5252 sp->some_taken = 1; 5253 sctp_m_freem(sp->data); 5254 sp->data = NULL; 5255 sp->tail_mbuf = NULL; 5256 sp->length = 0; 5257 } 5258 } 5259 SCTP_TCB_SEND_UNLOCK(stcb); 5260 } 5261 if (do_wakeup_routine) { 5262 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket); 5263 } 5264 return (ret_sz); 5265 } 5266 5267 /* 5268 * checks to see if the given address, sa, is one that is currently known by 5269 * the kernel note: can't distinguish the same address on multiple interfaces 5270 * and doesn't handle multiple addresses with different zone/scope id's note: 5271 * ifa_ifwithaddr() compares the entire sockaddr struct 5272 */ 5273 struct sctp_ifa * 5274 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, 5275 int holds_lock) 5276 { 5277 struct sctp_laddr *laddr; 5278 5279 if (holds_lock == 0) { 5280 SCTP_INP_RLOCK(inp); 5281 } 5282 5283 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 5284 if (laddr->ifa == NULL) 5285 continue; 5286 if (addr->sa_family != laddr->ifa->address.sa.sa_family) 5287 continue; 5288 #ifdef INET 5289 if (addr->sa_family == AF_INET) { 5290 if (((struct sockaddr_in *)addr)->sin_addr.s_addr == 5291 laddr->ifa->address.sin.sin_addr.s_addr) { 5292 /* found him. */ 5293 break; 5294 } 5295 } 5296 #endif 5297 #ifdef INET6 5298 if (addr->sa_family == AF_INET6) { 5299 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr, 5300 &laddr->ifa->address.sin6)) { 5301 /* found him. */ 5302 break; 5303 } 5304 } 5305 #endif 5306 } 5307 if (holds_lock == 0) { 5308 SCTP_INP_RUNLOCK(inp); 5309 } 5310 if (laddr != NULL) { 5311 return (laddr->ifa); 5312 } else { 5313 return (NULL); 5314 } 5315 } 5316 5317 uint32_t 5318 sctp_get_ifa_hash_val(struct sockaddr *addr) 5319 { 5320 switch (addr->sa_family) { 5321 #ifdef INET 5322 case AF_INET: 5323 { 5324 struct sockaddr_in *sin; 5325 5326 sin = (struct sockaddr_in *)addr; 5327 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16)); 5328 } 5329 #endif 5330 #ifdef INET6 5331 case AF_INET6: 5332 { 5333 struct sockaddr_in6 *sin6; 5334 uint32_t hash_of_addr; 5335 5336 sin6 = (struct sockaddr_in6 *)addr; 5337 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] + 5338 sin6->sin6_addr.s6_addr32[1] + 5339 sin6->sin6_addr.s6_addr32[2] + 5340 sin6->sin6_addr.s6_addr32[3]); 5341 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16)); 5342 return (hash_of_addr); 5343 } 5344 #endif 5345 default: 5346 break; 5347 } 5348 return (0); 5349 } 5350 5351 struct sctp_ifa * 5352 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock) 5353 { 5354 struct sctp_ifa *sctp_ifap; 5355 struct sctp_vrf *vrf; 5356 struct sctp_ifalist *hash_head; 5357 uint32_t hash_of_addr; 5358 5359 if (holds_lock == 0) { 5360 SCTP_IPI_ADDR_RLOCK(); 5361 } else { 5362 SCTP_IPI_ADDR_LOCK_ASSERT(); 5363 } 5364 5365 vrf = sctp_find_vrf(vrf_id); 5366 if (vrf == NULL) { 5367 if (holds_lock == 0) 5368 SCTP_IPI_ADDR_RUNLOCK(); 5369 return (NULL); 5370 } 5371 5372 hash_of_addr = sctp_get_ifa_hash_val(addr); 5373 5374 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)]; 5375 if (hash_head == NULL) { 5376 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ", 5377 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark, 5378 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark)); 5379 sctp_print_address(addr); 5380 SCTP_PRINTF("No such bucket for address\n"); 5381 if (holds_lock == 0) 5382 SCTP_IPI_ADDR_RUNLOCK(); 5383 5384 return (NULL); 5385 } 5386 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) { 5387 if (addr->sa_family != sctp_ifap->address.sa.sa_family) 5388 continue; 5389 #ifdef INET 5390 if (addr->sa_family == AF_INET) { 5391 if (((struct sockaddr_in *)addr)->sin_addr.s_addr == 5392 sctp_ifap->address.sin.sin_addr.s_addr) { 5393 /* found him. */ 5394 break; 5395 } 5396 } 5397 #endif 5398 #ifdef INET6 5399 if (addr->sa_family == AF_INET6) { 5400 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr, 5401 &sctp_ifap->address.sin6)) { 5402 /* found him. */ 5403 break; 5404 } 5405 } 5406 #endif 5407 } 5408 if (holds_lock == 0) 5409 SCTP_IPI_ADDR_RUNLOCK(); 5410 return (sctp_ifap); 5411 } 5412 5413 static void 5414 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock, 5415 uint32_t rwnd_req) 5416 { 5417 /* User pulled some data, do we need a rwnd update? */ 5418 struct epoch_tracker et; 5419 int r_unlocked = 0; 5420 uint32_t dif, rwnd; 5421 struct socket *so = NULL; 5422 5423 if (stcb == NULL) 5424 return; 5425 5426 atomic_add_int(&stcb->asoc.refcnt, 1); 5427 5428 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_ACK_SENT) || 5429 (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | SCTP_STATE_SHUTDOWN_RECEIVED))) { 5430 /* Pre-check If we are freeing no update */ 5431 goto no_lock; 5432 } 5433 SCTP_INP_INCR_REF(stcb->sctp_ep); 5434 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 5435 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { 5436 goto out; 5437 } 5438 so = stcb->sctp_socket; 5439 if (so == NULL) { 5440 goto out; 5441 } 5442 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far); 5443 /* Have you have freed enough to look */ 5444 *freed_so_far = 0; 5445 /* Yep, its worth a look and the lock overhead */ 5446 5447 /* Figure out what the rwnd would be */ 5448 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc); 5449 if (rwnd >= stcb->asoc.my_last_reported_rwnd) { 5450 dif = rwnd - stcb->asoc.my_last_reported_rwnd; 5451 } else { 5452 dif = 0; 5453 } 5454 if (dif >= rwnd_req) { 5455 if (hold_rlock) { 5456 SCTP_INP_READ_UNLOCK(stcb->sctp_ep); 5457 r_unlocked = 1; 5458 } 5459 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5460 /* 5461 * One last check before we allow the guy possibly 5462 * to get in. There is a race, where the guy has not 5463 * reached the gate. In that case 5464 */ 5465 goto out; 5466 } 5467 SCTP_TCB_LOCK(stcb); 5468 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5469 /* No reports here */ 5470 SCTP_TCB_UNLOCK(stcb); 5471 goto out; 5472 } 5473 SCTP_STAT_INCR(sctps_wu_sacks_sent); 5474 NET_EPOCH_ENTER(et); 5475 sctp_send_sack(stcb, SCTP_SO_LOCKED); 5476 5477 sctp_chunk_output(stcb->sctp_ep, stcb, 5478 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED); 5479 /* make sure no timer is running */ 5480 NET_EPOCH_EXIT(et); 5481 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, 5482 SCTP_FROM_SCTPUTIL + SCTP_LOC_6); 5483 SCTP_TCB_UNLOCK(stcb); 5484 } else { 5485 /* Update how much we have pending */ 5486 stcb->freed_by_sorcv_sincelast = dif; 5487 } 5488 out: 5489 if (so && r_unlocked && hold_rlock) { 5490 SCTP_INP_READ_LOCK(stcb->sctp_ep); 5491 } 5492 5493 SCTP_INP_DECR_REF(stcb->sctp_ep); 5494 no_lock: 5495 atomic_add_int(&stcb->asoc.refcnt, -1); 5496 return; 5497 } 5498 5499 int 5500 sctp_sorecvmsg(struct socket *so, 5501 struct uio *uio, 5502 struct mbuf **mp, 5503 struct sockaddr *from, 5504 int fromlen, 5505 int *msg_flags, 5506 struct sctp_sndrcvinfo *sinfo, 5507 int filling_sinfo) 5508 { 5509 /* 5510 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO. 5511 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy 5512 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ?? 5513 * On the way out we may send out any combination of: 5514 * MSG_NOTIFICATION MSG_EOR 5515 * 5516 */ 5517 struct sctp_inpcb *inp = NULL; 5518 ssize_t my_len = 0; 5519 ssize_t cp_len = 0; 5520 int error = 0; 5521 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL; 5522 struct mbuf *m = NULL; 5523 struct sctp_tcb *stcb = NULL; 5524 int wakeup_read_socket = 0; 5525 int freecnt_applied = 0; 5526 int out_flags = 0, in_flags = 0; 5527 int block_allowed = 1; 5528 uint32_t freed_so_far = 0; 5529 ssize_t copied_so_far = 0; 5530 int in_eeor_mode = 0; 5531 int no_rcv_needed = 0; 5532 uint32_t rwnd_req = 0; 5533 int hold_sblock = 0; 5534 int hold_rlock = 0; 5535 ssize_t slen = 0; 5536 uint32_t held_length = 0; 5537 int sockbuf_lock = 0; 5538 5539 if (uio == NULL) { 5540 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 5541 return (EINVAL); 5542 } 5543 5544 if (msg_flags) { 5545 in_flags = *msg_flags; 5546 if (in_flags & MSG_PEEK) 5547 SCTP_STAT_INCR(sctps_read_peeks); 5548 } else { 5549 in_flags = 0; 5550 } 5551 slen = uio->uio_resid; 5552 5553 /* Pull in and set up our int flags */ 5554 if (in_flags & MSG_OOB) { 5555 /* Out of band's NOT supported */ 5556 return (EOPNOTSUPP); 5557 } 5558 if ((in_flags & MSG_PEEK) && (mp != NULL)) { 5559 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 5560 return (EINVAL); 5561 } 5562 if ((in_flags & (MSG_DONTWAIT 5563 | MSG_NBIO 5564 )) || 5565 SCTP_SO_IS_NBIO(so)) { 5566 block_allowed = 0; 5567 } 5568 /* setup the endpoint */ 5569 inp = (struct sctp_inpcb *)so->so_pcb; 5570 if (inp == NULL) { 5571 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT); 5572 return (EFAULT); 5573 } 5574 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT); 5575 /* Must be at least a MTU's worth */ 5576 if (rwnd_req < SCTP_MIN_RWND) 5577 rwnd_req = SCTP_MIN_RWND; 5578 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); 5579 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 5580 sctp_misc_ints(SCTP_SORECV_ENTER, 5581 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid); 5582 } 5583 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 5584 sctp_misc_ints(SCTP_SORECV_ENTERPL, 5585 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid); 5586 } 5587 5588 error = SOCK_IO_RECV_LOCK(so, SBLOCKWAIT(in_flags)); 5589 if (error) { 5590 goto release_unlocked; 5591 } 5592 sockbuf_lock = 1; 5593 restart: 5594 5595 restart_nosblocks: 5596 if (hold_sblock == 0) { 5597 SOCKBUF_LOCK(&so->so_rcv); 5598 hold_sblock = 1; 5599 } 5600 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 5601 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { 5602 goto out; 5603 } 5604 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) { 5605 if (so->so_error) { 5606 error = so->so_error; 5607 if ((in_flags & MSG_PEEK) == 0) 5608 so->so_error = 0; 5609 goto out; 5610 } else { 5611 if (so->so_rcv.sb_cc == 0) { 5612 /* indicate EOF */ 5613 error = 0; 5614 goto out; 5615 } 5616 } 5617 } 5618 if (so->so_rcv.sb_cc <= held_length) { 5619 if (so->so_error) { 5620 error = so->so_error; 5621 if ((in_flags & MSG_PEEK) == 0) { 5622 so->so_error = 0; 5623 } 5624 goto out; 5625 } 5626 if ((so->so_rcv.sb_cc == 0) && 5627 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 5628 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { 5629 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 5630 /* 5631 * For active open side clear flags for 5632 * re-use passive open is blocked by 5633 * connect. 5634 */ 5635 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { 5636 /* 5637 * You were aborted, passive side 5638 * always hits here 5639 */ 5640 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 5641 error = ECONNRESET; 5642 } 5643 so->so_state &= ~(SS_ISCONNECTING | 5644 SS_ISDISCONNECTING | 5645 SS_ISCONFIRMING | 5646 SS_ISCONNECTED); 5647 if (error == 0) { 5648 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { 5649 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); 5650 error = ENOTCONN; 5651 } 5652 } 5653 goto out; 5654 } 5655 } 5656 if (block_allowed) { 5657 error = sbwait(&so->so_rcv); 5658 if (error) { 5659 goto out; 5660 } 5661 held_length = 0; 5662 goto restart_nosblocks; 5663 } else { 5664 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK); 5665 error = EWOULDBLOCK; 5666 goto out; 5667 } 5668 } 5669 if (hold_sblock == 1) { 5670 SOCKBUF_UNLOCK(&so->so_rcv); 5671 hold_sblock = 0; 5672 } 5673 /* we possibly have data we can read */ 5674 /* sa_ignore FREED_MEMORY */ 5675 control = TAILQ_FIRST(&inp->read_queue); 5676 if (control == NULL) { 5677 /* 5678 * This could be happening since the appender did the 5679 * increment but as not yet did the tailq insert onto the 5680 * read_queue 5681 */ 5682 if (hold_rlock == 0) { 5683 SCTP_INP_READ_LOCK(inp); 5684 } 5685 control = TAILQ_FIRST(&inp->read_queue); 5686 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) { 5687 #ifdef INVARIANTS 5688 panic("Huh, its non zero and nothing on control?"); 5689 #endif 5690 so->so_rcv.sb_cc = 0; 5691 } 5692 SCTP_INP_READ_UNLOCK(inp); 5693 hold_rlock = 0; 5694 goto restart; 5695 } 5696 5697 if ((control->length == 0) && 5698 (control->do_not_ref_stcb)) { 5699 /* 5700 * Clean up code for freeing assoc that left behind a 5701 * pdapi.. maybe a peer in EEOR that just closed after 5702 * sending and never indicated a EOR. 5703 */ 5704 if (hold_rlock == 0) { 5705 hold_rlock = 1; 5706 SCTP_INP_READ_LOCK(inp); 5707 } 5708 control->held_length = 0; 5709 if (control->data) { 5710 /* Hmm there is data here .. fix */ 5711 struct mbuf *m_tmp; 5712 int cnt = 0; 5713 5714 m_tmp = control->data; 5715 while (m_tmp) { 5716 cnt += SCTP_BUF_LEN(m_tmp); 5717 if (SCTP_BUF_NEXT(m_tmp) == NULL) { 5718 control->tail_mbuf = m_tmp; 5719 control->end_added = 1; 5720 } 5721 m_tmp = SCTP_BUF_NEXT(m_tmp); 5722 } 5723 control->length = cnt; 5724 } else { 5725 /* remove it */ 5726 TAILQ_REMOVE(&inp->read_queue, control, next); 5727 /* Add back any hiddend data */ 5728 sctp_free_remote_addr(control->whoFrom); 5729 sctp_free_a_readq(stcb, control); 5730 } 5731 if (hold_rlock) { 5732 hold_rlock = 0; 5733 SCTP_INP_READ_UNLOCK(inp); 5734 } 5735 goto restart; 5736 } 5737 if ((control->length == 0) && 5738 (control->end_added == 1)) { 5739 /* 5740 * Do we also need to check for (control->pdapi_aborted == 5741 * 1)? 5742 */ 5743 if (hold_rlock == 0) { 5744 hold_rlock = 1; 5745 SCTP_INP_READ_LOCK(inp); 5746 } 5747 TAILQ_REMOVE(&inp->read_queue, control, next); 5748 if (control->data) { 5749 #ifdef INVARIANTS 5750 panic("control->data not null but control->length == 0"); 5751 #else 5752 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n"); 5753 sctp_m_freem(control->data); 5754 control->data = NULL; 5755 #endif 5756 } 5757 if (control->aux_data) { 5758 sctp_m_free(control->aux_data); 5759 control->aux_data = NULL; 5760 } 5761 #ifdef INVARIANTS 5762 if (control->on_strm_q) { 5763 panic("About to free ctl:%p so:%p and its in %d", 5764 control, so, control->on_strm_q); 5765 } 5766 #endif 5767 sctp_free_remote_addr(control->whoFrom); 5768 sctp_free_a_readq(stcb, control); 5769 if (hold_rlock) { 5770 hold_rlock = 0; 5771 SCTP_INP_READ_UNLOCK(inp); 5772 } 5773 goto restart; 5774 } 5775 if (control->length == 0) { 5776 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) && 5777 (filling_sinfo)) { 5778 /* find a more suitable one then this */ 5779 ctl = TAILQ_NEXT(control, next); 5780 while (ctl) { 5781 if ((ctl->stcb != control->stcb) && (ctl->length) && 5782 (ctl->some_taken || 5783 (ctl->spec_flags & M_NOTIFICATION) || 5784 ((ctl->do_not_ref_stcb == 0) && 5785 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0))) 5786 ) { 5787 /*- 5788 * If we have a different TCB next, and there is data 5789 * present. If we have already taken some (pdapi), OR we can 5790 * ref the tcb and no delivery as started on this stream, we 5791 * take it. Note we allow a notification on a different 5792 * assoc to be delivered.. 5793 */ 5794 control = ctl; 5795 goto found_one; 5796 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) && 5797 (ctl->length) && 5798 ((ctl->some_taken) || 5799 ((ctl->do_not_ref_stcb == 0) && 5800 ((ctl->spec_flags & M_NOTIFICATION) == 0) && 5801 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) { 5802 /*- 5803 * If we have the same tcb, and there is data present, and we 5804 * have the strm interleave feature present. Then if we have 5805 * taken some (pdapi) or we can refer to tht tcb AND we have 5806 * not started a delivery for this stream, we can take it. 5807 * Note we do NOT allow a notificaiton on the same assoc to 5808 * be delivered. 5809 */ 5810 control = ctl; 5811 goto found_one; 5812 } 5813 ctl = TAILQ_NEXT(ctl, next); 5814 } 5815 } 5816 /* 5817 * if we reach here, not suitable replacement is available 5818 * <or> fragment interleave is NOT on. So stuff the sb_cc 5819 * into the our held count, and its time to sleep again. 5820 */ 5821 held_length = so->so_rcv.sb_cc; 5822 control->held_length = so->so_rcv.sb_cc; 5823 goto restart; 5824 } 5825 /* Clear the held length since there is something to read */ 5826 control->held_length = 0; 5827 found_one: 5828 /* 5829 * If we reach here, control has a some data for us to read off. 5830 * Note that stcb COULD be NULL. 5831 */ 5832 if (hold_rlock == 0) { 5833 hold_rlock = 1; 5834 SCTP_INP_READ_LOCK(inp); 5835 } 5836 control->some_taken++; 5837 stcb = control->stcb; 5838 if (stcb) { 5839 if ((control->do_not_ref_stcb == 0) && 5840 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) { 5841 if (freecnt_applied == 0) 5842 stcb = NULL; 5843 } else if (control->do_not_ref_stcb == 0) { 5844 /* you can't free it on me please */ 5845 /* 5846 * The lock on the socket buffer protects us so the 5847 * free code will stop. But since we used the 5848 * socketbuf lock and the sender uses the tcb_lock 5849 * to increment, we need to use the atomic add to 5850 * the refcnt 5851 */ 5852 if (freecnt_applied) { 5853 #ifdef INVARIANTS 5854 panic("refcnt already incremented"); 5855 #else 5856 SCTP_PRINTF("refcnt already incremented?\n"); 5857 #endif 5858 } else { 5859 atomic_add_int(&stcb->asoc.refcnt, 1); 5860 freecnt_applied = 1; 5861 } 5862 /* 5863 * Setup to remember how much we have not yet told 5864 * the peer our rwnd has opened up. Note we grab the 5865 * value from the tcb from last time. Note too that 5866 * sack sending clears this when a sack is sent, 5867 * which is fine. Once we hit the rwnd_req, we then 5868 * will go to the sctp_user_rcvd() that will not 5869 * lock until it KNOWs it MUST send a WUP-SACK. 5870 */ 5871 freed_so_far = (uint32_t)stcb->freed_by_sorcv_sincelast; 5872 stcb->freed_by_sorcv_sincelast = 0; 5873 } 5874 } 5875 if (stcb && 5876 ((control->spec_flags & M_NOTIFICATION) == 0) && 5877 control->do_not_ref_stcb == 0) { 5878 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1; 5879 } 5880 5881 /* First lets get off the sinfo and sockaddr info */ 5882 if ((sinfo != NULL) && (filling_sinfo != 0)) { 5883 sinfo->sinfo_stream = control->sinfo_stream; 5884 sinfo->sinfo_ssn = (uint16_t)control->mid; 5885 sinfo->sinfo_flags = control->sinfo_flags; 5886 sinfo->sinfo_ppid = control->sinfo_ppid; 5887 sinfo->sinfo_context = control->sinfo_context; 5888 sinfo->sinfo_timetolive = control->sinfo_timetolive; 5889 sinfo->sinfo_tsn = control->sinfo_tsn; 5890 sinfo->sinfo_cumtsn = control->sinfo_cumtsn; 5891 sinfo->sinfo_assoc_id = control->sinfo_assoc_id; 5892 nxt = TAILQ_NEXT(control, next); 5893 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) || 5894 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) { 5895 struct sctp_extrcvinfo *s_extra; 5896 5897 s_extra = (struct sctp_extrcvinfo *)sinfo; 5898 if ((nxt) && 5899 (nxt->length)) { 5900 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL; 5901 if (nxt->sinfo_flags & SCTP_UNORDERED) { 5902 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED; 5903 } 5904 if (nxt->spec_flags & M_NOTIFICATION) { 5905 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION; 5906 } 5907 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id; 5908 s_extra->serinfo_next_length = nxt->length; 5909 s_extra->serinfo_next_ppid = nxt->sinfo_ppid; 5910 s_extra->serinfo_next_stream = nxt->sinfo_stream; 5911 if (nxt->tail_mbuf != NULL) { 5912 if (nxt->end_added) { 5913 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE; 5914 } 5915 } 5916 } else { 5917 /* 5918 * we explicitly 0 this, since the memcpy 5919 * got some other things beyond the older 5920 * sinfo_ that is on the control's structure 5921 * :-D 5922 */ 5923 nxt = NULL; 5924 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG; 5925 s_extra->serinfo_next_aid = 0; 5926 s_extra->serinfo_next_length = 0; 5927 s_extra->serinfo_next_ppid = 0; 5928 s_extra->serinfo_next_stream = 0; 5929 } 5930 } 5931 /* 5932 * update off the real current cum-ack, if we have an stcb. 5933 */ 5934 if ((control->do_not_ref_stcb == 0) && stcb) 5935 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn; 5936 /* 5937 * mask off the high bits, we keep the actual chunk bits in 5938 * there. 5939 */ 5940 sinfo->sinfo_flags &= 0x00ff; 5941 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) { 5942 sinfo->sinfo_flags |= SCTP_UNORDERED; 5943 } 5944 } 5945 #ifdef SCTP_ASOCLOG_OF_TSNS 5946 { 5947 int index, newindex; 5948 struct sctp_pcbtsn_rlog *entry; 5949 5950 do { 5951 index = inp->readlog_index; 5952 newindex = index + 1; 5953 if (newindex >= SCTP_READ_LOG_SIZE) { 5954 newindex = 0; 5955 } 5956 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0); 5957 entry = &inp->readlog[index]; 5958 entry->vtag = control->sinfo_assoc_id; 5959 entry->strm = control->sinfo_stream; 5960 entry->seq = (uint16_t)control->mid; 5961 entry->sz = control->length; 5962 entry->flgs = control->sinfo_flags; 5963 } 5964 #endif 5965 if ((fromlen > 0) && (from != NULL)) { 5966 union sctp_sockstore store; 5967 size_t len; 5968 5969 switch (control->whoFrom->ro._l_addr.sa.sa_family) { 5970 #ifdef INET6 5971 case AF_INET6: 5972 len = sizeof(struct sockaddr_in6); 5973 store.sin6 = control->whoFrom->ro._l_addr.sin6; 5974 store.sin6.sin6_port = control->port_from; 5975 break; 5976 #endif 5977 #ifdef INET 5978 case AF_INET: 5979 #ifdef INET6 5980 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { 5981 len = sizeof(struct sockaddr_in6); 5982 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin, 5983 &store.sin6); 5984 store.sin6.sin6_port = control->port_from; 5985 } else { 5986 len = sizeof(struct sockaddr_in); 5987 store.sin = control->whoFrom->ro._l_addr.sin; 5988 store.sin.sin_port = control->port_from; 5989 } 5990 #else 5991 len = sizeof(struct sockaddr_in); 5992 store.sin = control->whoFrom->ro._l_addr.sin; 5993 store.sin.sin_port = control->port_from; 5994 #endif 5995 break; 5996 #endif 5997 default: 5998 len = 0; 5999 break; 6000 } 6001 memcpy(from, &store, min((size_t)fromlen, len)); 6002 #ifdef INET6 6003 { 6004 struct sockaddr_in6 lsa6, *from6; 6005 6006 from6 = (struct sockaddr_in6 *)from; 6007 sctp_recover_scope_mac(from6, (&lsa6)); 6008 } 6009 #endif 6010 } 6011 if (hold_rlock) { 6012 SCTP_INP_READ_UNLOCK(inp); 6013 hold_rlock = 0; 6014 } 6015 if (hold_sblock) { 6016 SOCKBUF_UNLOCK(&so->so_rcv); 6017 hold_sblock = 0; 6018 } 6019 /* now copy out what data we can */ 6020 if (mp == NULL) { 6021 /* copy out each mbuf in the chain up to length */ 6022 get_more_data: 6023 m = control->data; 6024 while (m) { 6025 /* Move out all we can */ 6026 cp_len = uio->uio_resid; 6027 my_len = SCTP_BUF_LEN(m); 6028 if (cp_len > my_len) { 6029 /* not enough in this buf */ 6030 cp_len = my_len; 6031 } 6032 if (hold_rlock) { 6033 SCTP_INP_READ_UNLOCK(inp); 6034 hold_rlock = 0; 6035 } 6036 if (cp_len > 0) 6037 error = uiomove(mtod(m, char *), (int)cp_len, uio); 6038 /* re-read */ 6039 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 6040 goto release; 6041 } 6042 6043 if ((control->do_not_ref_stcb == 0) && stcb && 6044 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 6045 no_rcv_needed = 1; 6046 } 6047 if (error) { 6048 /* error we are out of here */ 6049 goto release; 6050 } 6051 SCTP_INP_READ_LOCK(inp); 6052 hold_rlock = 1; 6053 if (cp_len == SCTP_BUF_LEN(m)) { 6054 if ((SCTP_BUF_NEXT(m) == NULL) && 6055 (control->end_added)) { 6056 out_flags |= MSG_EOR; 6057 if ((control->do_not_ref_stcb == 0) && 6058 (control->stcb != NULL) && 6059 ((control->spec_flags & M_NOTIFICATION) == 0)) 6060 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 6061 } 6062 if (control->spec_flags & M_NOTIFICATION) { 6063 out_flags |= MSG_NOTIFICATION; 6064 } 6065 /* we ate up the mbuf */ 6066 if (in_flags & MSG_PEEK) { 6067 /* just looking */ 6068 m = SCTP_BUF_NEXT(m); 6069 copied_so_far += cp_len; 6070 } else { 6071 /* dispose of the mbuf */ 6072 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6073 sctp_sblog(&so->so_rcv, 6074 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 6075 } 6076 sctp_sbfree(control, stcb, &so->so_rcv, m); 6077 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6078 sctp_sblog(&so->so_rcv, 6079 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 6080 } 6081 copied_so_far += cp_len; 6082 freed_so_far += (uint32_t)cp_len; 6083 freed_so_far += MSIZE; 6084 atomic_subtract_int(&control->length, (int)cp_len); 6085 control->data = sctp_m_free(m); 6086 m = control->data; 6087 /* 6088 * been through it all, must hold sb 6089 * lock ok to null tail 6090 */ 6091 if (control->data == NULL) { 6092 #ifdef INVARIANTS 6093 if ((control->end_added == 0) || 6094 (TAILQ_NEXT(control, next) == NULL)) { 6095 /* 6096 * If the end is not 6097 * added, OR the 6098 * next is NOT null 6099 * we MUST have the 6100 * lock. 6101 */ 6102 if (mtx_owned(&inp->inp_rdata_mtx) == 0) { 6103 panic("Hmm we don't own the lock?"); 6104 } 6105 } 6106 #endif 6107 control->tail_mbuf = NULL; 6108 #ifdef INVARIANTS 6109 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) { 6110 panic("end_added, nothing left and no MSG_EOR"); 6111 } 6112 #endif 6113 } 6114 } 6115 } else { 6116 /* Do we need to trim the mbuf? */ 6117 if (control->spec_flags & M_NOTIFICATION) { 6118 out_flags |= MSG_NOTIFICATION; 6119 } 6120 if ((in_flags & MSG_PEEK) == 0) { 6121 SCTP_BUF_RESV_UF(m, cp_len); 6122 SCTP_BUF_LEN(m) -= (int)cp_len; 6123 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6124 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, (int)cp_len); 6125 } 6126 atomic_subtract_int(&so->so_rcv.sb_cc, (int)cp_len); 6127 if ((control->do_not_ref_stcb == 0) && 6128 stcb) { 6129 atomic_subtract_int(&stcb->asoc.sb_cc, (int)cp_len); 6130 } 6131 copied_so_far += cp_len; 6132 freed_so_far += (uint32_t)cp_len; 6133 freed_so_far += MSIZE; 6134 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6135 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, 6136 SCTP_LOG_SBRESULT, 0); 6137 } 6138 atomic_subtract_int(&control->length, (int)cp_len); 6139 } else { 6140 copied_so_far += cp_len; 6141 } 6142 } 6143 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) { 6144 break; 6145 } 6146 if (((stcb) && (in_flags & MSG_PEEK) == 0) && 6147 (control->do_not_ref_stcb == 0) && 6148 (freed_so_far >= rwnd_req)) { 6149 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 6150 } 6151 } /* end while(m) */ 6152 /* 6153 * At this point we have looked at it all and we either have 6154 * a MSG_EOR/or read all the user wants... <OR> 6155 * control->length == 0. 6156 */ 6157 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) { 6158 /* we are done with this control */ 6159 if (control->length == 0) { 6160 if (control->data) { 6161 #ifdef INVARIANTS 6162 panic("control->data not null at read eor?"); 6163 #else 6164 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n"); 6165 sctp_m_freem(control->data); 6166 control->data = NULL; 6167 #endif 6168 } 6169 done_with_control: 6170 if (hold_rlock == 0) { 6171 SCTP_INP_READ_LOCK(inp); 6172 hold_rlock = 1; 6173 } 6174 TAILQ_REMOVE(&inp->read_queue, control, next); 6175 /* Add back any hiddend data */ 6176 if (control->held_length) { 6177 held_length = 0; 6178 control->held_length = 0; 6179 wakeup_read_socket = 1; 6180 } 6181 if (control->aux_data) { 6182 sctp_m_free(control->aux_data); 6183 control->aux_data = NULL; 6184 } 6185 no_rcv_needed = control->do_not_ref_stcb; 6186 sctp_free_remote_addr(control->whoFrom); 6187 control->data = NULL; 6188 #ifdef INVARIANTS 6189 if (control->on_strm_q) { 6190 panic("About to free ctl:%p so:%p and its in %d", 6191 control, so, control->on_strm_q); 6192 } 6193 #endif 6194 sctp_free_a_readq(stcb, control); 6195 control = NULL; 6196 if ((freed_so_far >= rwnd_req) && 6197 (no_rcv_needed == 0)) 6198 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 6199 6200 } else { 6201 /* 6202 * The user did not read all of this 6203 * message, turn off the returned MSG_EOR 6204 * since we are leaving more behind on the 6205 * control to read. 6206 */ 6207 #ifdef INVARIANTS 6208 if (control->end_added && 6209 (control->data == NULL) && 6210 (control->tail_mbuf == NULL)) { 6211 panic("Gak, control->length is corrupt?"); 6212 } 6213 #endif 6214 no_rcv_needed = control->do_not_ref_stcb; 6215 out_flags &= ~MSG_EOR; 6216 } 6217 } 6218 if (out_flags & MSG_EOR) { 6219 goto release; 6220 } 6221 if ((uio->uio_resid == 0) || 6222 ((in_eeor_mode) && 6223 (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))) { 6224 goto release; 6225 } 6226 /* 6227 * If I hit here the receiver wants more and this message is 6228 * NOT done (pd-api). So two questions. Can we block? if not 6229 * we are done. Did the user NOT set MSG_WAITALL? 6230 */ 6231 if (block_allowed == 0) { 6232 goto release; 6233 } 6234 /* 6235 * We need to wait for more data a few things: - We don't 6236 * release the I/O lock so we don't get someone else 6237 * reading. - We must be sure to account for the case where 6238 * what is added is NOT to our control when we wakeup. 6239 */ 6240 6241 /* 6242 * Do we need to tell the transport a rwnd update might be 6243 * needed before we go to sleep? 6244 */ 6245 if (((stcb) && (in_flags & MSG_PEEK) == 0) && 6246 ((freed_so_far >= rwnd_req) && 6247 (control->do_not_ref_stcb == 0) && 6248 (no_rcv_needed == 0))) { 6249 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 6250 } 6251 wait_some_more: 6252 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) { 6253 goto release; 6254 } 6255 6256 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) 6257 goto release; 6258 6259 if (hold_rlock == 1) { 6260 SCTP_INP_READ_UNLOCK(inp); 6261 hold_rlock = 0; 6262 } 6263 if (hold_sblock == 0) { 6264 SOCKBUF_LOCK(&so->so_rcv); 6265 hold_sblock = 1; 6266 } 6267 if ((copied_so_far) && (control->length == 0) && 6268 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) { 6269 goto release; 6270 } 6271 if (so->so_rcv.sb_cc <= control->held_length) { 6272 error = sbwait(&so->so_rcv); 6273 if (error) { 6274 goto release; 6275 } 6276 control->held_length = 0; 6277 } 6278 if (hold_sblock) { 6279 SOCKBUF_UNLOCK(&so->so_rcv); 6280 hold_sblock = 0; 6281 } 6282 if (control->length == 0) { 6283 /* still nothing here */ 6284 if (control->end_added == 1) { 6285 /* he aborted, or is done i.e.did a shutdown */ 6286 out_flags |= MSG_EOR; 6287 if (control->pdapi_aborted) { 6288 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 6289 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 6290 6291 out_flags |= MSG_TRUNC; 6292 } else { 6293 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 6294 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 6295 } 6296 goto done_with_control; 6297 } 6298 if (so->so_rcv.sb_cc > held_length) { 6299 control->held_length = so->so_rcv.sb_cc; 6300 held_length = 0; 6301 } 6302 goto wait_some_more; 6303 } else if (control->data == NULL) { 6304 /* 6305 * we must re-sync since data is probably being 6306 * added 6307 */ 6308 SCTP_INP_READ_LOCK(inp); 6309 if ((control->length > 0) && (control->data == NULL)) { 6310 /* 6311 * big trouble.. we have the lock and its 6312 * corrupt? 6313 */ 6314 #ifdef INVARIANTS 6315 panic("Impossible data==NULL length !=0"); 6316 #endif 6317 out_flags |= MSG_EOR; 6318 out_flags |= MSG_TRUNC; 6319 control->length = 0; 6320 SCTP_INP_READ_UNLOCK(inp); 6321 goto done_with_control; 6322 } 6323 SCTP_INP_READ_UNLOCK(inp); 6324 /* We will fall around to get more data */ 6325 } 6326 goto get_more_data; 6327 } else { 6328 /*- 6329 * Give caller back the mbuf chain, 6330 * store in uio_resid the length 6331 */ 6332 wakeup_read_socket = 0; 6333 if ((control->end_added == 0) || 6334 (TAILQ_NEXT(control, next) == NULL)) { 6335 /* Need to get rlock */ 6336 if (hold_rlock == 0) { 6337 SCTP_INP_READ_LOCK(inp); 6338 hold_rlock = 1; 6339 } 6340 } 6341 if (control->end_added) { 6342 out_flags |= MSG_EOR; 6343 if ((control->do_not_ref_stcb == 0) && 6344 (control->stcb != NULL) && 6345 ((control->spec_flags & M_NOTIFICATION) == 0)) 6346 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 6347 } 6348 if (control->spec_flags & M_NOTIFICATION) { 6349 out_flags |= MSG_NOTIFICATION; 6350 } 6351 uio->uio_resid = control->length; 6352 *mp = control->data; 6353 m = control->data; 6354 while (m) { 6355 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6356 sctp_sblog(&so->so_rcv, 6357 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 6358 } 6359 sctp_sbfree(control, stcb, &so->so_rcv, m); 6360 freed_so_far += (uint32_t)SCTP_BUF_LEN(m); 6361 freed_so_far += MSIZE; 6362 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6363 sctp_sblog(&so->so_rcv, 6364 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 6365 } 6366 m = SCTP_BUF_NEXT(m); 6367 } 6368 control->data = control->tail_mbuf = NULL; 6369 control->length = 0; 6370 if (out_flags & MSG_EOR) { 6371 /* Done with this control */ 6372 goto done_with_control; 6373 } 6374 } 6375 release: 6376 if (hold_rlock == 1) { 6377 SCTP_INP_READ_UNLOCK(inp); 6378 hold_rlock = 0; 6379 } 6380 if (hold_sblock == 1) { 6381 SOCKBUF_UNLOCK(&so->so_rcv); 6382 hold_sblock = 0; 6383 } 6384 6385 SOCK_IO_RECV_UNLOCK(so); 6386 sockbuf_lock = 0; 6387 6388 release_unlocked: 6389 if (hold_sblock) { 6390 SOCKBUF_UNLOCK(&so->so_rcv); 6391 hold_sblock = 0; 6392 } 6393 if ((stcb) && (in_flags & MSG_PEEK) == 0) { 6394 if ((freed_so_far >= rwnd_req) && 6395 (control && (control->do_not_ref_stcb == 0)) && 6396 (no_rcv_needed == 0)) 6397 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 6398 } 6399 out: 6400 if (msg_flags) { 6401 *msg_flags = out_flags; 6402 } 6403 if (((out_flags & MSG_EOR) == 0) && 6404 ((in_flags & MSG_PEEK) == 0) && 6405 (sinfo) && 6406 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) || 6407 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) { 6408 struct sctp_extrcvinfo *s_extra; 6409 6410 s_extra = (struct sctp_extrcvinfo *)sinfo; 6411 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG; 6412 } 6413 if (hold_rlock == 1) { 6414 SCTP_INP_READ_UNLOCK(inp); 6415 } 6416 if (hold_sblock) { 6417 SOCKBUF_UNLOCK(&so->so_rcv); 6418 } 6419 if (sockbuf_lock) { 6420 SOCK_IO_RECV_UNLOCK(so); 6421 } 6422 6423 if (freecnt_applied) { 6424 /* 6425 * The lock on the socket buffer protects us so the free 6426 * code will stop. But since we used the socketbuf lock and 6427 * the sender uses the tcb_lock to increment, we need to use 6428 * the atomic add to the refcnt. 6429 */ 6430 if (stcb == NULL) { 6431 #ifdef INVARIANTS 6432 panic("stcb for refcnt has gone NULL?"); 6433 goto stage_left; 6434 #else 6435 goto stage_left; 6436 #endif 6437 } 6438 /* Save the value back for next time */ 6439 stcb->freed_by_sorcv_sincelast = freed_so_far; 6440 atomic_add_int(&stcb->asoc.refcnt, -1); 6441 } 6442 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 6443 if (stcb) { 6444 sctp_misc_ints(SCTP_SORECV_DONE, 6445 freed_so_far, 6446 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen), 6447 stcb->asoc.my_rwnd, 6448 so->so_rcv.sb_cc); 6449 } else { 6450 sctp_misc_ints(SCTP_SORECV_DONE, 6451 freed_so_far, 6452 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen), 6453 0, 6454 so->so_rcv.sb_cc); 6455 } 6456 } 6457 stage_left: 6458 if (wakeup_read_socket) { 6459 sctp_sorwakeup(inp, so); 6460 } 6461 return (error); 6462 } 6463 6464 #ifdef SCTP_MBUF_LOGGING 6465 struct mbuf * 6466 sctp_m_free(struct mbuf *m) 6467 { 6468 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 6469 sctp_log_mb(m, SCTP_MBUF_IFREE); 6470 } 6471 return (m_free(m)); 6472 } 6473 6474 void 6475 sctp_m_freem(struct mbuf *mb) 6476 { 6477 while (mb != NULL) 6478 mb = sctp_m_free(mb); 6479 } 6480 6481 #endif 6482 6483 int 6484 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id) 6485 { 6486 /* 6487 * Given a local address. For all associations that holds the 6488 * address, request a peer-set-primary. 6489 */ 6490 struct sctp_ifa *ifa; 6491 struct sctp_laddr *wi; 6492 6493 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED); 6494 if (ifa == NULL) { 6495 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL); 6496 return (EADDRNOTAVAIL); 6497 } 6498 /* 6499 * Now that we have the ifa we must awaken the iterator with this 6500 * message. 6501 */ 6502 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); 6503 if (wi == NULL) { 6504 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 6505 return (ENOMEM); 6506 } 6507 /* Now incr the count and int wi structure */ 6508 SCTP_INCR_LADDR_COUNT(); 6509 memset(wi, 0, sizeof(*wi)); 6510 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time); 6511 wi->ifa = ifa; 6512 wi->action = SCTP_SET_PRIM_ADDR; 6513 atomic_add_int(&ifa->refcount, 1); 6514 6515 /* Now add it to the work queue */ 6516 SCTP_WQ_ADDR_LOCK(); 6517 /* 6518 * Should this really be a tailq? As it is we will process the 6519 * newest first :-0 6520 */ 6521 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); 6522 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, 6523 (struct sctp_inpcb *)NULL, 6524 (struct sctp_tcb *)NULL, 6525 (struct sctp_nets *)NULL); 6526 SCTP_WQ_ADDR_UNLOCK(); 6527 return (0); 6528 } 6529 6530 int 6531 sctp_soreceive(struct socket *so, 6532 struct sockaddr **psa, 6533 struct uio *uio, 6534 struct mbuf **mp0, 6535 struct mbuf **controlp, 6536 int *flagsp) 6537 { 6538 int error, fromlen; 6539 uint8_t sockbuf[256]; 6540 struct sockaddr *from; 6541 struct sctp_extrcvinfo sinfo; 6542 int filling_sinfo = 1; 6543 int flags; 6544 struct sctp_inpcb *inp; 6545 6546 inp = (struct sctp_inpcb *)so->so_pcb; 6547 /* pickup the assoc we are reading from */ 6548 if (inp == NULL) { 6549 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6550 return (EINVAL); 6551 } 6552 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) && 6553 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) && 6554 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) || 6555 (controlp == NULL)) { 6556 /* user does not want the sndrcv ctl */ 6557 filling_sinfo = 0; 6558 } 6559 if (psa) { 6560 from = (struct sockaddr *)sockbuf; 6561 fromlen = sizeof(sockbuf); 6562 from->sa_len = 0; 6563 } else { 6564 from = NULL; 6565 fromlen = 0; 6566 } 6567 6568 if (filling_sinfo) { 6569 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo)); 6570 } 6571 if (flagsp != NULL) { 6572 flags = *flagsp; 6573 } else { 6574 flags = 0; 6575 } 6576 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags, 6577 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo); 6578 if (flagsp != NULL) { 6579 *flagsp = flags; 6580 } 6581 if (controlp != NULL) { 6582 /* copy back the sinfo in a CMSG format */ 6583 if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) { 6584 *controlp = sctp_build_ctl_nchunk(inp, 6585 (struct sctp_sndrcvinfo *)&sinfo); 6586 } else { 6587 *controlp = NULL; 6588 } 6589 } 6590 if (psa) { 6591 /* copy back the address info */ 6592 if (from && from->sa_len) { 6593 *psa = sodupsockaddr(from, M_NOWAIT); 6594 } else { 6595 *psa = NULL; 6596 } 6597 } 6598 return (error); 6599 } 6600 6601 int 6602 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, 6603 int totaddr, int *error) 6604 { 6605 int added = 0; 6606 int i; 6607 struct sctp_inpcb *inp; 6608 struct sockaddr *sa; 6609 size_t incr = 0; 6610 #ifdef INET 6611 struct sockaddr_in *sin; 6612 #endif 6613 #ifdef INET6 6614 struct sockaddr_in6 *sin6; 6615 #endif 6616 6617 sa = addr; 6618 inp = stcb->sctp_ep; 6619 *error = 0; 6620 for (i = 0; i < totaddr; i++) { 6621 switch (sa->sa_family) { 6622 #ifdef INET 6623 case AF_INET: 6624 incr = sizeof(struct sockaddr_in); 6625 sin = (struct sockaddr_in *)sa; 6626 if ((sin->sin_addr.s_addr == INADDR_ANY) || 6627 (sin->sin_addr.s_addr == INADDR_BROADCAST) || 6628 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) { 6629 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6630 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 6631 SCTP_FROM_SCTPUTIL + SCTP_LOC_7); 6632 *error = EINVAL; 6633 goto out_now; 6634 } 6635 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port, 6636 SCTP_DONOT_SETSCOPE, 6637 SCTP_ADDR_IS_CONFIRMED)) { 6638 /* assoc gone no un-lock */ 6639 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 6640 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 6641 SCTP_FROM_SCTPUTIL + SCTP_LOC_8); 6642 *error = ENOBUFS; 6643 goto out_now; 6644 } 6645 added++; 6646 break; 6647 #endif 6648 #ifdef INET6 6649 case AF_INET6: 6650 incr = sizeof(struct sockaddr_in6); 6651 sin6 = (struct sockaddr_in6 *)sa; 6652 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 6653 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 6654 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6655 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 6656 SCTP_FROM_SCTPUTIL + SCTP_LOC_9); 6657 *error = EINVAL; 6658 goto out_now; 6659 } 6660 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port, 6661 SCTP_DONOT_SETSCOPE, 6662 SCTP_ADDR_IS_CONFIRMED)) { 6663 /* assoc gone no un-lock */ 6664 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 6665 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 6666 SCTP_FROM_SCTPUTIL + SCTP_LOC_10); 6667 *error = ENOBUFS; 6668 goto out_now; 6669 } 6670 added++; 6671 break; 6672 #endif 6673 default: 6674 break; 6675 } 6676 sa = (struct sockaddr *)((caddr_t)sa + incr); 6677 } 6678 out_now: 6679 return (added); 6680 } 6681 6682 int 6683 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr, 6684 unsigned int totaddr, 6685 unsigned int *num_v4, unsigned int *num_v6, 6686 unsigned int limit) 6687 { 6688 struct sockaddr *sa; 6689 struct sctp_tcb *stcb; 6690 unsigned int incr, at, i; 6691 6692 at = 0; 6693 sa = addr; 6694 *num_v6 = *num_v4 = 0; 6695 /* account and validate addresses */ 6696 if (totaddr == 0) { 6697 return (EINVAL); 6698 } 6699 for (i = 0; i < totaddr; i++) { 6700 if (at + sizeof(struct sockaddr) > limit) { 6701 return (EINVAL); 6702 } 6703 switch (sa->sa_family) { 6704 #ifdef INET 6705 case AF_INET: 6706 incr = (unsigned int)sizeof(struct sockaddr_in); 6707 if (sa->sa_len != incr) { 6708 return (EINVAL); 6709 } 6710 (*num_v4) += 1; 6711 break; 6712 #endif 6713 #ifdef INET6 6714 case AF_INET6: 6715 { 6716 struct sockaddr_in6 *sin6; 6717 6718 incr = (unsigned int)sizeof(struct sockaddr_in6); 6719 if (sa->sa_len != incr) { 6720 return (EINVAL); 6721 } 6722 sin6 = (struct sockaddr_in6 *)sa; 6723 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6724 /* Must be non-mapped for connectx */ 6725 return (EINVAL); 6726 } 6727 (*num_v6) += 1; 6728 break; 6729 } 6730 #endif 6731 default: 6732 return (EINVAL); 6733 } 6734 if ((at + incr) > limit) { 6735 return (EINVAL); 6736 } 6737 SCTP_INP_INCR_REF(inp); 6738 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL); 6739 if (stcb != NULL) { 6740 SCTP_TCB_UNLOCK(stcb); 6741 return (EALREADY); 6742 } else { 6743 SCTP_INP_DECR_REF(inp); 6744 } 6745 at += incr; 6746 sa = (struct sockaddr *)((caddr_t)sa + incr); 6747 } 6748 return (0); 6749 } 6750 6751 /* 6752 * sctp_bindx(ADD) for one address. 6753 * assumes all arguments are valid/checked by caller. 6754 */ 6755 void 6756 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp, 6757 struct sockaddr *sa, uint32_t vrf_id, int *error, 6758 void *p) 6759 { 6760 #if defined(INET) && defined(INET6) 6761 struct sockaddr_in sin; 6762 #endif 6763 #ifdef INET6 6764 struct sockaddr_in6 *sin6; 6765 #endif 6766 #ifdef INET 6767 struct sockaddr_in *sinp; 6768 #endif 6769 struct sockaddr *addr_to_use; 6770 struct sctp_inpcb *lep; 6771 uint16_t port; 6772 6773 /* see if we're bound all already! */ 6774 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6775 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6776 *error = EINVAL; 6777 return; 6778 } 6779 switch (sa->sa_family) { 6780 #ifdef INET6 6781 case AF_INET6: 6782 if (sa->sa_len != sizeof(struct sockaddr_in6)) { 6783 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6784 *error = EINVAL; 6785 return; 6786 } 6787 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 6788 /* can only bind v6 on PF_INET6 sockets */ 6789 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6790 *error = EINVAL; 6791 return; 6792 } 6793 sin6 = (struct sockaddr_in6 *)sa; 6794 port = sin6->sin6_port; 6795 #ifdef INET 6796 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6797 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6798 SCTP_IPV6_V6ONLY(inp)) { 6799 /* can't bind v4-mapped on PF_INET sockets */ 6800 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6801 *error = EINVAL; 6802 return; 6803 } 6804 in6_sin6_2_sin(&sin, sin6); 6805 addr_to_use = (struct sockaddr *)&sin; 6806 } else { 6807 addr_to_use = sa; 6808 } 6809 #else 6810 addr_to_use = sa; 6811 #endif 6812 break; 6813 #endif 6814 #ifdef INET 6815 case AF_INET: 6816 if (sa->sa_len != sizeof(struct sockaddr_in)) { 6817 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6818 *error = EINVAL; 6819 return; 6820 } 6821 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6822 SCTP_IPV6_V6ONLY(inp)) { 6823 /* can't bind v4 on PF_INET sockets */ 6824 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6825 *error = EINVAL; 6826 return; 6827 } 6828 sinp = (struct sockaddr_in *)sa; 6829 port = sinp->sin_port; 6830 addr_to_use = sa; 6831 break; 6832 #endif 6833 default: 6834 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6835 *error = EINVAL; 6836 return; 6837 } 6838 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { 6839 if (p == NULL) { 6840 /* Can't get proc for Net/Open BSD */ 6841 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6842 *error = EINVAL; 6843 return; 6844 } 6845 *error = sctp_inpcb_bind(so, addr_to_use, NULL, p); 6846 return; 6847 } 6848 /* Validate the incoming port. */ 6849 if ((port != 0) && (port != inp->sctp_lport)) { 6850 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6851 *error = EINVAL; 6852 return; 6853 } 6854 lep = sctp_pcb_findep(addr_to_use, 1, 0, vrf_id); 6855 if (lep == NULL) { 6856 /* add the address */ 6857 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use, 6858 SCTP_ADD_IP_ADDRESS, vrf_id); 6859 } else { 6860 if (lep != inp) { 6861 *error = EADDRINUSE; 6862 } 6863 SCTP_INP_DECR_REF(lep); 6864 } 6865 } 6866 6867 /* 6868 * sctp_bindx(DELETE) for one address. 6869 * assumes all arguments are valid/checked by caller. 6870 */ 6871 void 6872 sctp_bindx_delete_address(struct sctp_inpcb *inp, 6873 struct sockaddr *sa, uint32_t vrf_id, int *error) 6874 { 6875 struct sockaddr *addr_to_use; 6876 #if defined(INET) && defined(INET6) 6877 struct sockaddr_in6 *sin6; 6878 struct sockaddr_in sin; 6879 #endif 6880 6881 /* see if we're bound all already! */ 6882 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6883 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6884 *error = EINVAL; 6885 return; 6886 } 6887 switch (sa->sa_family) { 6888 #ifdef INET6 6889 case AF_INET6: 6890 if (sa->sa_len != sizeof(struct sockaddr_in6)) { 6891 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6892 *error = EINVAL; 6893 return; 6894 } 6895 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 6896 /* can only bind v6 on PF_INET6 sockets */ 6897 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6898 *error = EINVAL; 6899 return; 6900 } 6901 #ifdef INET 6902 sin6 = (struct sockaddr_in6 *)sa; 6903 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6904 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6905 SCTP_IPV6_V6ONLY(inp)) { 6906 /* can't bind mapped-v4 on PF_INET sockets */ 6907 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6908 *error = EINVAL; 6909 return; 6910 } 6911 in6_sin6_2_sin(&sin, sin6); 6912 addr_to_use = (struct sockaddr *)&sin; 6913 } else { 6914 addr_to_use = sa; 6915 } 6916 #else 6917 addr_to_use = sa; 6918 #endif 6919 break; 6920 #endif 6921 #ifdef INET 6922 case AF_INET: 6923 if (sa->sa_len != sizeof(struct sockaddr_in)) { 6924 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6925 *error = EINVAL; 6926 return; 6927 } 6928 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6929 SCTP_IPV6_V6ONLY(inp)) { 6930 /* can't bind v4 on PF_INET sockets */ 6931 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6932 *error = EINVAL; 6933 return; 6934 } 6935 addr_to_use = sa; 6936 break; 6937 #endif 6938 default: 6939 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6940 *error = EINVAL; 6941 return; 6942 } 6943 /* No lock required mgmt_ep_sa does its own locking. */ 6944 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use, SCTP_DEL_IP_ADDRESS, 6945 vrf_id); 6946 } 6947 6948 /* 6949 * returns the valid local address count for an assoc, taking into account 6950 * all scoping rules 6951 */ 6952 int 6953 sctp_local_addr_count(struct sctp_tcb *stcb) 6954 { 6955 int loopback_scope; 6956 #if defined(INET) 6957 int ipv4_local_scope, ipv4_addr_legal; 6958 #endif 6959 #if defined(INET6) 6960 int local_scope, site_scope, ipv6_addr_legal; 6961 #endif 6962 struct sctp_vrf *vrf; 6963 struct sctp_ifn *sctp_ifn; 6964 struct sctp_ifa *sctp_ifa; 6965 int count = 0; 6966 6967 /* Turn on all the appropriate scopes */ 6968 loopback_scope = stcb->asoc.scope.loopback_scope; 6969 #if defined(INET) 6970 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope; 6971 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal; 6972 #endif 6973 #if defined(INET6) 6974 local_scope = stcb->asoc.scope.local_scope; 6975 site_scope = stcb->asoc.scope.site_scope; 6976 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal; 6977 #endif 6978 SCTP_IPI_ADDR_RLOCK(); 6979 vrf = sctp_find_vrf(stcb->asoc.vrf_id); 6980 if (vrf == NULL) { 6981 /* no vrf, no addresses */ 6982 SCTP_IPI_ADDR_RUNLOCK(); 6983 return (0); 6984 } 6985 6986 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6987 /* 6988 * bound all case: go through all ifns on the vrf 6989 */ 6990 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 6991 if ((loopback_scope == 0) && 6992 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 6993 continue; 6994 } 6995 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 6996 if (sctp_is_addr_restricted(stcb, sctp_ifa)) 6997 continue; 6998 switch (sctp_ifa->address.sa.sa_family) { 6999 #ifdef INET 7000 case AF_INET: 7001 if (ipv4_addr_legal) { 7002 struct sockaddr_in *sin; 7003 7004 sin = &sctp_ifa->address.sin; 7005 if (sin->sin_addr.s_addr == 0) { 7006 /* 7007 * skip unspecified 7008 * addrs 7009 */ 7010 continue; 7011 } 7012 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred, 7013 &sin->sin_addr) != 0) { 7014 continue; 7015 } 7016 if ((ipv4_local_scope == 0) && 7017 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { 7018 continue; 7019 } 7020 /* count this one */ 7021 count++; 7022 } else { 7023 continue; 7024 } 7025 break; 7026 #endif 7027 #ifdef INET6 7028 case AF_INET6: 7029 if (ipv6_addr_legal) { 7030 struct sockaddr_in6 *sin6; 7031 7032 sin6 = &sctp_ifa->address.sin6; 7033 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 7034 continue; 7035 } 7036 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred, 7037 &sin6->sin6_addr) != 0) { 7038 continue; 7039 } 7040 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 7041 if (local_scope == 0) 7042 continue; 7043 if (sin6->sin6_scope_id == 0) { 7044 if (sa6_recoverscope(sin6) != 0) 7045 /* 7046 * 7047 * bad 7048 * link 7049 * 7050 * local 7051 * 7052 * address 7053 */ 7054 continue; 7055 } 7056 } 7057 if ((site_scope == 0) && 7058 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { 7059 continue; 7060 } 7061 /* count this one */ 7062 count++; 7063 } 7064 break; 7065 #endif 7066 default: 7067 /* TSNH */ 7068 break; 7069 } 7070 } 7071 } 7072 } else { 7073 /* 7074 * subset bound case 7075 */ 7076 struct sctp_laddr *laddr; 7077 7078 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, 7079 sctp_nxt_addr) { 7080 if (sctp_is_addr_restricted(stcb, laddr->ifa)) { 7081 continue; 7082 } 7083 /* count this one */ 7084 count++; 7085 } 7086 } 7087 SCTP_IPI_ADDR_RUNLOCK(); 7088 return (count); 7089 } 7090 7091 #if defined(SCTP_LOCAL_TRACE_BUF) 7092 7093 void 7094 sctp_log_trace(uint32_t subsys, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f) 7095 { 7096 uint32_t saveindex, newindex; 7097 7098 do { 7099 saveindex = SCTP_BASE_SYSCTL(sctp_log).index; 7100 if (saveindex >= SCTP_MAX_LOGGING_SIZE) { 7101 newindex = 1; 7102 } else { 7103 newindex = saveindex + 1; 7104 } 7105 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0); 7106 if (saveindex >= SCTP_MAX_LOGGING_SIZE) { 7107 saveindex = 0; 7108 } 7109 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT; 7110 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys; 7111 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a; 7112 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b; 7113 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c; 7114 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d; 7115 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e; 7116 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f; 7117 } 7118 7119 #endif 7120 static void 7121 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp, 7122 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED) 7123 { 7124 struct ip *iph; 7125 #ifdef INET6 7126 struct ip6_hdr *ip6; 7127 #endif 7128 struct mbuf *sp, *last; 7129 struct udphdr *uhdr; 7130 uint16_t port; 7131 7132 if ((m->m_flags & M_PKTHDR) == 0) { 7133 /* Can't handle one that is not a pkt hdr */ 7134 goto out; 7135 } 7136 /* Pull the src port */ 7137 iph = mtod(m, struct ip *); 7138 uhdr = (struct udphdr *)((caddr_t)iph + off); 7139 port = uhdr->uh_sport; 7140 /* 7141 * Split out the mbuf chain. Leave the IP header in m, place the 7142 * rest in the sp. 7143 */ 7144 sp = m_split(m, off, M_NOWAIT); 7145 if (sp == NULL) { 7146 /* Gak, drop packet, we can't do a split */ 7147 goto out; 7148 } 7149 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) { 7150 /* Gak, packet can't have an SCTP header in it - too small */ 7151 m_freem(sp); 7152 goto out; 7153 } 7154 /* Now pull up the UDP header and SCTP header together */ 7155 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr)); 7156 if (sp == NULL) { 7157 /* Gak pullup failed */ 7158 goto out; 7159 } 7160 /* Trim out the UDP header */ 7161 m_adj(sp, sizeof(struct udphdr)); 7162 7163 /* Now reconstruct the mbuf chain */ 7164 for (last = m; last->m_next; last = last->m_next); 7165 last->m_next = sp; 7166 m->m_pkthdr.len += sp->m_pkthdr.len; 7167 /* 7168 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP 7169 * checksum and it was valid. Since CSUM_DATA_VALID == 7170 * CSUM_SCTP_VALID this would imply that the HW also verified the 7171 * SCTP checksum. Therefore, clear the bit. 7172 */ 7173 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 7174 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n", 7175 m->m_pkthdr.len, 7176 if_name(m->m_pkthdr.rcvif), 7177 (int)m->m_pkthdr.csum_flags, CSUM_BITS); 7178 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID; 7179 iph = mtod(m, struct ip *); 7180 switch (iph->ip_v) { 7181 #ifdef INET 7182 case IPVERSION: 7183 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr)); 7184 sctp_input_with_port(m, off, port); 7185 break; 7186 #endif 7187 #ifdef INET6 7188 case IPV6_VERSION >> 4: 7189 ip6 = mtod(m, struct ip6_hdr *); 7190 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr)); 7191 sctp6_input_with_port(&m, &off, port); 7192 break; 7193 #endif 7194 default: 7195 goto out; 7196 break; 7197 } 7198 return; 7199 out: 7200 m_freem(m); 7201 } 7202 7203 #ifdef INET 7204 static void 7205 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED) 7206 { 7207 struct ip *outer_ip, *inner_ip; 7208 struct sctphdr *sh; 7209 struct icmp *icmp; 7210 struct udphdr *udp; 7211 struct sctp_inpcb *inp; 7212 struct sctp_tcb *stcb; 7213 struct sctp_nets *net; 7214 struct sctp_init_chunk *ch; 7215 struct sockaddr_in src, dst; 7216 uint8_t type, code; 7217 7218 inner_ip = (struct ip *)vip; 7219 icmp = (struct icmp *)((caddr_t)inner_ip - 7220 (sizeof(struct icmp) - sizeof(struct ip))); 7221 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip)); 7222 if (ntohs(outer_ip->ip_len) < 7223 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) { 7224 return; 7225 } 7226 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2)); 7227 sh = (struct sctphdr *)(udp + 1); 7228 memset(&src, 0, sizeof(struct sockaddr_in)); 7229 src.sin_family = AF_INET; 7230 src.sin_len = sizeof(struct sockaddr_in); 7231 src.sin_port = sh->src_port; 7232 src.sin_addr = inner_ip->ip_src; 7233 memset(&dst, 0, sizeof(struct sockaddr_in)); 7234 dst.sin_family = AF_INET; 7235 dst.sin_len = sizeof(struct sockaddr_in); 7236 dst.sin_port = sh->dest_port; 7237 dst.sin_addr = inner_ip->ip_dst; 7238 /* 7239 * 'dst' holds the dest of the packet that failed to be sent. 'src' 7240 * holds our local endpoint address. Thus we reverse the dst and the 7241 * src in the lookup. 7242 */ 7243 inp = NULL; 7244 net = NULL; 7245 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 7246 (struct sockaddr *)&src, 7247 &inp, &net, 1, 7248 SCTP_DEFAULT_VRFID); 7249 if ((stcb != NULL) && 7250 (net != NULL) && 7251 (inp != NULL)) { 7252 /* Check the UDP port numbers */ 7253 if ((udp->uh_dport != net->port) || 7254 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) { 7255 SCTP_TCB_UNLOCK(stcb); 7256 return; 7257 } 7258 /* Check the verification tag */ 7259 if (ntohl(sh->v_tag) != 0) { 7260 /* 7261 * This must be the verification tag used for 7262 * sending out packets. We don't consider packets 7263 * reflecting the verification tag. 7264 */ 7265 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) { 7266 SCTP_TCB_UNLOCK(stcb); 7267 return; 7268 } 7269 } else { 7270 if (ntohs(outer_ip->ip_len) >= 7271 sizeof(struct ip) + 7272 8 + (inner_ip->ip_hl << 2) + 8 + 20) { 7273 /* 7274 * In this case we can check if we got an 7275 * INIT chunk and if the initiate tag 7276 * matches. 7277 */ 7278 ch = (struct sctp_init_chunk *)(sh + 1); 7279 if ((ch->ch.chunk_type != SCTP_INITIATION) || 7280 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) { 7281 SCTP_TCB_UNLOCK(stcb); 7282 return; 7283 } 7284 } else { 7285 SCTP_TCB_UNLOCK(stcb); 7286 return; 7287 } 7288 } 7289 type = icmp->icmp_type; 7290 code = icmp->icmp_code; 7291 if ((type == ICMP_UNREACH) && 7292 (code == ICMP_UNREACH_PORT)) { 7293 code = ICMP_UNREACH_PROTOCOL; 7294 } 7295 sctp_notify(inp, stcb, net, type, code, 7296 ntohs(inner_ip->ip_len), 7297 (uint32_t)ntohs(icmp->icmp_nextmtu)); 7298 } else { 7299 if ((stcb == NULL) && (inp != NULL)) { 7300 /* reduce ref-count */ 7301 SCTP_INP_WLOCK(inp); 7302 SCTP_INP_DECR_REF(inp); 7303 SCTP_INP_WUNLOCK(inp); 7304 } 7305 if (stcb) { 7306 SCTP_TCB_UNLOCK(stcb); 7307 } 7308 } 7309 return; 7310 } 7311 #endif 7312 7313 #ifdef INET6 7314 static void 7315 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED) 7316 { 7317 struct ip6ctlparam *ip6cp; 7318 struct sctp_inpcb *inp; 7319 struct sctp_tcb *stcb; 7320 struct sctp_nets *net; 7321 struct sctphdr sh; 7322 struct udphdr udp; 7323 struct sockaddr_in6 src, dst; 7324 uint8_t type, code; 7325 7326 ip6cp = (struct ip6ctlparam *)d; 7327 /* 7328 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid. 7329 */ 7330 if (ip6cp->ip6c_m == NULL) { 7331 return; 7332 } 7333 /* 7334 * Check if we can safely examine the ports and the verification tag 7335 * of the SCTP common header. 7336 */ 7337 if (ip6cp->ip6c_m->m_pkthdr.len < 7338 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) { 7339 return; 7340 } 7341 /* Copy out the UDP header. */ 7342 memset(&udp, 0, sizeof(struct udphdr)); 7343 m_copydata(ip6cp->ip6c_m, 7344 ip6cp->ip6c_off, 7345 sizeof(struct udphdr), 7346 (caddr_t)&udp); 7347 /* Copy out the port numbers and the verification tag. */ 7348 memset(&sh, 0, sizeof(struct sctphdr)); 7349 m_copydata(ip6cp->ip6c_m, 7350 ip6cp->ip6c_off + sizeof(struct udphdr), 7351 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 7352 (caddr_t)&sh); 7353 memset(&src, 0, sizeof(struct sockaddr_in6)); 7354 src.sin6_family = AF_INET6; 7355 src.sin6_len = sizeof(struct sockaddr_in6); 7356 src.sin6_port = sh.src_port; 7357 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 7358 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 7359 return; 7360 } 7361 memset(&dst, 0, sizeof(struct sockaddr_in6)); 7362 dst.sin6_family = AF_INET6; 7363 dst.sin6_len = sizeof(struct sockaddr_in6); 7364 dst.sin6_port = sh.dest_port; 7365 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 7366 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 7367 return; 7368 } 7369 inp = NULL; 7370 net = NULL; 7371 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 7372 (struct sockaddr *)&src, 7373 &inp, &net, 1, SCTP_DEFAULT_VRFID); 7374 if ((stcb != NULL) && 7375 (net != NULL) && 7376 (inp != NULL)) { 7377 /* Check the UDP port numbers */ 7378 if ((udp.uh_dport != net->port) || 7379 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) { 7380 SCTP_TCB_UNLOCK(stcb); 7381 return; 7382 } 7383 /* Check the verification tag */ 7384 if (ntohl(sh.v_tag) != 0) { 7385 /* 7386 * This must be the verification tag used for 7387 * sending out packets. We don't consider packets 7388 * reflecting the verification tag. 7389 */ 7390 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 7391 SCTP_TCB_UNLOCK(stcb); 7392 return; 7393 } 7394 } else { 7395 if (ip6cp->ip6c_m->m_pkthdr.len >= 7396 ip6cp->ip6c_off + sizeof(struct udphdr) + 7397 sizeof(struct sctphdr) + 7398 sizeof(struct sctp_chunkhdr) + 7399 offsetof(struct sctp_init, a_rwnd)) { 7400 /* 7401 * In this case we can check if we got an 7402 * INIT chunk and if the initiate tag 7403 * matches. 7404 */ 7405 uint32_t initiate_tag; 7406 uint8_t chunk_type; 7407 7408 m_copydata(ip6cp->ip6c_m, 7409 ip6cp->ip6c_off + 7410 sizeof(struct udphdr) + 7411 sizeof(struct sctphdr), 7412 sizeof(uint8_t), 7413 (caddr_t)&chunk_type); 7414 m_copydata(ip6cp->ip6c_m, 7415 ip6cp->ip6c_off + 7416 sizeof(struct udphdr) + 7417 sizeof(struct sctphdr) + 7418 sizeof(struct sctp_chunkhdr), 7419 sizeof(uint32_t), 7420 (caddr_t)&initiate_tag); 7421 if ((chunk_type != SCTP_INITIATION) || 7422 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 7423 SCTP_TCB_UNLOCK(stcb); 7424 return; 7425 } 7426 } else { 7427 SCTP_TCB_UNLOCK(stcb); 7428 return; 7429 } 7430 } 7431 type = ip6cp->ip6c_icmp6->icmp6_type; 7432 code = ip6cp->ip6c_icmp6->icmp6_code; 7433 if ((type == ICMP6_DST_UNREACH) && 7434 (code == ICMP6_DST_UNREACH_NOPORT)) { 7435 type = ICMP6_PARAM_PROB; 7436 code = ICMP6_PARAMPROB_NEXTHEADER; 7437 } 7438 sctp6_notify(inp, stcb, net, type, code, 7439 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 7440 } else { 7441 if ((stcb == NULL) && (inp != NULL)) { 7442 /* reduce inp's ref-count */ 7443 SCTP_INP_WLOCK(inp); 7444 SCTP_INP_DECR_REF(inp); 7445 SCTP_INP_WUNLOCK(inp); 7446 } 7447 if (stcb) { 7448 SCTP_TCB_UNLOCK(stcb); 7449 } 7450 } 7451 } 7452 #endif 7453 7454 void 7455 sctp_over_udp_stop(void) 7456 { 7457 /* 7458 * This function assumes sysctl caller holds sctp_sysctl_info_lock() 7459 * for writting! 7460 */ 7461 #ifdef INET 7462 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { 7463 soclose(SCTP_BASE_INFO(udp4_tun_socket)); 7464 SCTP_BASE_INFO(udp4_tun_socket) = NULL; 7465 } 7466 #endif 7467 #ifdef INET6 7468 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { 7469 soclose(SCTP_BASE_INFO(udp6_tun_socket)); 7470 SCTP_BASE_INFO(udp6_tun_socket) = NULL; 7471 } 7472 #endif 7473 } 7474 7475 int 7476 sctp_over_udp_start(void) 7477 { 7478 uint16_t port; 7479 int ret; 7480 #ifdef INET 7481 struct sockaddr_in sin; 7482 #endif 7483 #ifdef INET6 7484 struct sockaddr_in6 sin6; 7485 #endif 7486 /* 7487 * This function assumes sysctl caller holds sctp_sysctl_info_lock() 7488 * for writting! 7489 */ 7490 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port); 7491 if (ntohs(port) == 0) { 7492 /* Must have a port set */ 7493 return (EINVAL); 7494 } 7495 #ifdef INET 7496 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { 7497 /* Already running -- must stop first */ 7498 return (EALREADY); 7499 } 7500 #endif 7501 #ifdef INET6 7502 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { 7503 /* Already running -- must stop first */ 7504 return (EALREADY); 7505 } 7506 #endif 7507 #ifdef INET 7508 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket), 7509 SOCK_DGRAM, IPPROTO_UDP, 7510 curthread->td_ucred, curthread))) { 7511 sctp_over_udp_stop(); 7512 return (ret); 7513 } 7514 /* Call the special UDP hook. */ 7515 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket), 7516 sctp_recv_udp_tunneled_packet, 7517 sctp_recv_icmp_tunneled_packet, 7518 NULL))) { 7519 sctp_over_udp_stop(); 7520 return (ret); 7521 } 7522 /* Ok, we have a socket, bind it to the port. */ 7523 memset(&sin, 0, sizeof(struct sockaddr_in)); 7524 sin.sin_len = sizeof(struct sockaddr_in); 7525 sin.sin_family = AF_INET; 7526 sin.sin_port = htons(port); 7527 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket), 7528 (struct sockaddr *)&sin, curthread))) { 7529 sctp_over_udp_stop(); 7530 return (ret); 7531 } 7532 #endif 7533 #ifdef INET6 7534 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket), 7535 SOCK_DGRAM, IPPROTO_UDP, 7536 curthread->td_ucred, curthread))) { 7537 sctp_over_udp_stop(); 7538 return (ret); 7539 } 7540 /* Call the special UDP hook. */ 7541 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket), 7542 sctp_recv_udp_tunneled_packet, 7543 sctp_recv_icmp6_tunneled_packet, 7544 NULL))) { 7545 sctp_over_udp_stop(); 7546 return (ret); 7547 } 7548 /* Ok, we have a socket, bind it to the port. */ 7549 memset(&sin6, 0, sizeof(struct sockaddr_in6)); 7550 sin6.sin6_len = sizeof(struct sockaddr_in6); 7551 sin6.sin6_family = AF_INET6; 7552 sin6.sin6_port = htons(port); 7553 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket), 7554 (struct sockaddr *)&sin6, curthread))) { 7555 sctp_over_udp_stop(); 7556 return (ret); 7557 } 7558 #endif 7559 return (0); 7560 } 7561 7562 /* 7563 * sctp_min_mtu ()returns the minimum of all non-zero arguments. 7564 * If all arguments are zero, zero is returned. 7565 */ 7566 uint32_t 7567 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3) 7568 { 7569 if (mtu1 > 0) { 7570 if (mtu2 > 0) { 7571 if (mtu3 > 0) { 7572 return (min(mtu1, min(mtu2, mtu3))); 7573 } else { 7574 return (min(mtu1, mtu2)); 7575 } 7576 } else { 7577 if (mtu3 > 0) { 7578 return (min(mtu1, mtu3)); 7579 } else { 7580 return (mtu1); 7581 } 7582 } 7583 } else { 7584 if (mtu2 > 0) { 7585 if (mtu3 > 0) { 7586 return (min(mtu2, mtu3)); 7587 } else { 7588 return (mtu2); 7589 } 7590 } else { 7591 return (mtu3); 7592 } 7593 } 7594 } 7595 7596 void 7597 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu) 7598 { 7599 struct in_conninfo inc; 7600 7601 memset(&inc, 0, sizeof(struct in_conninfo)); 7602 inc.inc_fibnum = fibnum; 7603 switch (addr->sa.sa_family) { 7604 #ifdef INET 7605 case AF_INET: 7606 inc.inc_faddr = addr->sin.sin_addr; 7607 break; 7608 #endif 7609 #ifdef INET6 7610 case AF_INET6: 7611 inc.inc_flags |= INC_ISIPV6; 7612 inc.inc6_faddr = addr->sin6.sin6_addr; 7613 break; 7614 #endif 7615 default: 7616 return; 7617 } 7618 tcp_hc_updatemtu(&inc, (u_long)mtu); 7619 } 7620 7621 uint32_t 7622 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum) 7623 { 7624 struct in_conninfo inc; 7625 7626 memset(&inc, 0, sizeof(struct in_conninfo)); 7627 inc.inc_fibnum = fibnum; 7628 switch (addr->sa.sa_family) { 7629 #ifdef INET 7630 case AF_INET: 7631 inc.inc_faddr = addr->sin.sin_addr; 7632 break; 7633 #endif 7634 #ifdef INET6 7635 case AF_INET6: 7636 inc.inc_flags |= INC_ISIPV6; 7637 inc.inc6_faddr = addr->sin6.sin6_addr; 7638 break; 7639 #endif 7640 default: 7641 return (0); 7642 } 7643 return ((uint32_t)tcp_hc_getmtu(&inc)); 7644 } 7645 7646 void 7647 sctp_set_state(struct sctp_tcb *stcb, int new_state) 7648 { 7649 #if defined(KDTRACE_HOOKS) 7650 int old_state = stcb->asoc.state; 7651 #endif 7652 7653 KASSERT((new_state & ~SCTP_STATE_MASK) == 0, 7654 ("sctp_set_state: Can't set substate (new_state = %x)", 7655 new_state)); 7656 stcb->asoc.state = (stcb->asoc.state & ~SCTP_STATE_MASK) | new_state; 7657 if ((new_state == SCTP_STATE_SHUTDOWN_RECEIVED) || 7658 (new_state == SCTP_STATE_SHUTDOWN_SENT) || 7659 (new_state == SCTP_STATE_SHUTDOWN_ACK_SENT)) { 7660 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING); 7661 } 7662 #if defined(KDTRACE_HOOKS) 7663 if (((old_state & SCTP_STATE_MASK) != new_state) && 7664 !(((old_state & SCTP_STATE_MASK) == SCTP_STATE_EMPTY) && 7665 (new_state == SCTP_STATE_INUSE))) { 7666 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state); 7667 } 7668 #endif 7669 } 7670 7671 void 7672 sctp_add_substate(struct sctp_tcb *stcb, int substate) 7673 { 7674 #if defined(KDTRACE_HOOKS) 7675 int old_state = stcb->asoc.state; 7676 #endif 7677 7678 KASSERT((substate & SCTP_STATE_MASK) == 0, 7679 ("sctp_add_substate: Can't set state (substate = %x)", 7680 substate)); 7681 stcb->asoc.state |= substate; 7682 #if defined(KDTRACE_HOOKS) 7683 if (((substate & SCTP_STATE_ABOUT_TO_BE_FREED) && 7684 ((old_state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) || 7685 ((substate & SCTP_STATE_SHUTDOWN_PENDING) && 7686 ((old_state & SCTP_STATE_SHUTDOWN_PENDING) == 0))) { 7687 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state); 7688 } 7689 #endif 7690 } 7691