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 = SCTP_SBAVAIL(sb); 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 optimistic 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 = 0; 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 SCTP_TCB_LOCK(stcb); 1292 for (i = 0; i < asoc->streamoutcnt; i++) { 1293 /* 1294 * inbound side must be set to 0xffff, also NOTE when we get 1295 * the INIT-ACK back (for INIT sender) we MUST reduce the 1296 * count (streamoutcnt) but first check if we sent to any of 1297 * the upper streams that were dropped (if some were). Those 1298 * that were dropped must be notified to the upper layer as 1299 * failed to send. 1300 */ 1301 TAILQ_INIT(&asoc->strmout[i].outqueue); 1302 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL); 1303 asoc->strmout[i].chunks_on_queues = 0; 1304 #if defined(SCTP_DETAILED_STR_STATS) 1305 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) { 1306 asoc->strmout[i].abandoned_sent[j] = 0; 1307 asoc->strmout[i].abandoned_unsent[j] = 0; 1308 } 1309 #else 1310 asoc->strmout[i].abandoned_sent[0] = 0; 1311 asoc->strmout[i].abandoned_unsent[0] = 0; 1312 #endif 1313 asoc->strmout[i].next_mid_ordered = 0; 1314 asoc->strmout[i].next_mid_unordered = 0; 1315 asoc->strmout[i].sid = i; 1316 asoc->strmout[i].last_msg_incomplete = 0; 1317 asoc->strmout[i].state = SCTP_STREAM_OPENING; 1318 } 1319 asoc->ss_functions.sctp_ss_init(stcb, asoc); 1320 SCTP_TCB_UNLOCK(stcb); 1321 1322 /* Now the mapping array */ 1323 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY; 1324 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size, 1325 SCTP_M_MAP); 1326 if (asoc->mapping_array == NULL) { 1327 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1328 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1329 return (ENOMEM); 1330 } 1331 memset(asoc->mapping_array, 0, asoc->mapping_array_size); 1332 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size, 1333 SCTP_M_MAP); 1334 if (asoc->nr_mapping_array == NULL) { 1335 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1336 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1337 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1338 return (ENOMEM); 1339 } 1340 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size); 1341 1342 /* Now the init of the other outqueues */ 1343 TAILQ_INIT(&asoc->free_chunks); 1344 TAILQ_INIT(&asoc->control_send_queue); 1345 TAILQ_INIT(&asoc->asconf_send_queue); 1346 TAILQ_INIT(&asoc->send_queue); 1347 TAILQ_INIT(&asoc->sent_queue); 1348 TAILQ_INIT(&asoc->resetHead); 1349 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome; 1350 TAILQ_INIT(&asoc->asconf_queue); 1351 /* authentication fields */ 1352 asoc->authinfo.random = NULL; 1353 asoc->authinfo.active_keyid = 0; 1354 asoc->authinfo.assoc_key = NULL; 1355 asoc->authinfo.assoc_keyid = 0; 1356 asoc->authinfo.recv_key = NULL; 1357 asoc->authinfo.recv_keyid = 0; 1358 LIST_INIT(&asoc->shared_keys); 1359 asoc->marked_retrans = 0; 1360 asoc->port = inp->sctp_ep.port; 1361 asoc->timoinit = 0; 1362 asoc->timodata = 0; 1363 asoc->timosack = 0; 1364 asoc->timoshutdown = 0; 1365 asoc->timoheartbeat = 0; 1366 asoc->timocookie = 0; 1367 asoc->timoshutdownack = 0; 1368 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time); 1369 asoc->discontinuity_time = asoc->start_time; 1370 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) { 1371 asoc->abandoned_unsent[i] = 0; 1372 asoc->abandoned_sent[i] = 0; 1373 } 1374 /* 1375 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and 1376 * freed later when the association is freed. 1377 */ 1378 return (0); 1379 } 1380 1381 void 1382 sctp_print_mapping_array(struct sctp_association *asoc) 1383 { 1384 unsigned int i, limit; 1385 1386 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n", 1387 asoc->mapping_array_size, 1388 asoc->mapping_array_base_tsn, 1389 asoc->cumulative_tsn, 1390 asoc->highest_tsn_inside_map, 1391 asoc->highest_tsn_inside_nr_map); 1392 for (limit = asoc->mapping_array_size; limit > 1; limit--) { 1393 if (asoc->mapping_array[limit - 1] != 0) { 1394 break; 1395 } 1396 } 1397 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); 1398 for (i = 0; i < limit; i++) { 1399 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); 1400 } 1401 if (limit % 16) 1402 SCTP_PRINTF("\n"); 1403 for (limit = asoc->mapping_array_size; limit > 1; limit--) { 1404 if (asoc->nr_mapping_array[limit - 1]) { 1405 break; 1406 } 1407 } 1408 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); 1409 for (i = 0; i < limit; i++) { 1410 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); 1411 } 1412 if (limit % 16) 1413 SCTP_PRINTF("\n"); 1414 } 1415 1416 int 1417 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed) 1418 { 1419 /* mapping array needs to grow */ 1420 uint8_t *new_array1, *new_array2; 1421 uint32_t new_size; 1422 1423 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR); 1424 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP); 1425 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP); 1426 if ((new_array1 == NULL) || (new_array2 == NULL)) { 1427 /* can't get more, forget it */ 1428 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size); 1429 if (new_array1) { 1430 SCTP_FREE(new_array1, SCTP_M_MAP); 1431 } 1432 if (new_array2) { 1433 SCTP_FREE(new_array2, SCTP_M_MAP); 1434 } 1435 return (-1); 1436 } 1437 memset(new_array1, 0, new_size); 1438 memset(new_array2, 0, new_size); 1439 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size); 1440 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size); 1441 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1442 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP); 1443 asoc->mapping_array = new_array1; 1444 asoc->nr_mapping_array = new_array2; 1445 asoc->mapping_array_size = new_size; 1446 return (0); 1447 } 1448 1449 static void 1450 sctp_iterator_work(struct sctp_iterator *it) 1451 { 1452 struct epoch_tracker et; 1453 struct sctp_inpcb *tinp; 1454 int iteration_count = 0; 1455 int inp_skip = 0; 1456 int first_in = 1; 1457 1458 NET_EPOCH_ENTER(et); 1459 SCTP_INP_INFO_RLOCK(); 1460 SCTP_ITERATOR_LOCK(); 1461 sctp_it_ctl.cur_it = it; 1462 if (it->inp) { 1463 SCTP_INP_RLOCK(it->inp); 1464 SCTP_INP_DECR_REF(it->inp); 1465 } 1466 if (it->inp == NULL) { 1467 /* iterator is complete */ 1468 done_with_iterator: 1469 sctp_it_ctl.cur_it = NULL; 1470 SCTP_ITERATOR_UNLOCK(); 1471 SCTP_INP_INFO_RUNLOCK(); 1472 if (it->function_atend != NULL) { 1473 (*it->function_atend) (it->pointer, it->val); 1474 } 1475 SCTP_FREE(it, SCTP_M_ITER); 1476 NET_EPOCH_EXIT(et); 1477 return; 1478 } 1479 select_a_new_ep: 1480 if (first_in) { 1481 first_in = 0; 1482 } else { 1483 SCTP_INP_RLOCK(it->inp); 1484 } 1485 while (((it->pcb_flags) && 1486 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) || 1487 ((it->pcb_features) && 1488 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) { 1489 /* endpoint flags or features don't match, so keep looking */ 1490 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1491 SCTP_INP_RUNLOCK(it->inp); 1492 goto done_with_iterator; 1493 } 1494 tinp = it->inp; 1495 it->inp = LIST_NEXT(it->inp, sctp_list); 1496 it->stcb = NULL; 1497 SCTP_INP_RUNLOCK(tinp); 1498 if (it->inp == NULL) { 1499 goto done_with_iterator; 1500 } 1501 SCTP_INP_RLOCK(it->inp); 1502 } 1503 /* now go through each assoc which is in the desired state */ 1504 if (it->done_current_ep == 0) { 1505 if (it->function_inp != NULL) 1506 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val); 1507 it->done_current_ep = 1; 1508 } 1509 if (it->stcb == NULL) { 1510 /* run the per instance function */ 1511 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list); 1512 } 1513 if ((inp_skip) || it->stcb == NULL) { 1514 if (it->function_inp_end != NULL) { 1515 inp_skip = (*it->function_inp_end) (it->inp, 1516 it->pointer, 1517 it->val); 1518 } 1519 SCTP_INP_RUNLOCK(it->inp); 1520 goto no_stcb; 1521 } 1522 while (it->stcb != NULL) { 1523 SCTP_TCB_LOCK(it->stcb); 1524 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) { 1525 /* not in the right state... keep looking */ 1526 SCTP_TCB_UNLOCK(it->stcb); 1527 goto next_assoc; 1528 } 1529 /* see if we have limited out the iterator loop */ 1530 iteration_count++; 1531 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) { 1532 /* Pause to let others grab the lock */ 1533 atomic_add_int(&it->stcb->asoc.refcnt, 1); 1534 SCTP_TCB_UNLOCK(it->stcb); 1535 SCTP_INP_INCR_REF(it->inp); 1536 SCTP_INP_RUNLOCK(it->inp); 1537 SCTP_ITERATOR_UNLOCK(); 1538 SCTP_INP_INFO_RUNLOCK(); 1539 SCTP_INP_INFO_RLOCK(); 1540 SCTP_ITERATOR_LOCK(); 1541 if (sctp_it_ctl.iterator_flags) { 1542 /* We won't be staying here */ 1543 SCTP_INP_DECR_REF(it->inp); 1544 atomic_subtract_int(&it->stcb->asoc.refcnt, 1); 1545 if (sctp_it_ctl.iterator_flags & 1546 SCTP_ITERATOR_STOP_CUR_IT) { 1547 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT; 1548 goto done_with_iterator; 1549 } 1550 if (sctp_it_ctl.iterator_flags & 1551 SCTP_ITERATOR_STOP_CUR_INP) { 1552 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP; 1553 goto no_stcb; 1554 } 1555 /* If we reach here huh? */ 1556 SCTP_PRINTF("Unknown it ctl flag %x\n", 1557 sctp_it_ctl.iterator_flags); 1558 sctp_it_ctl.iterator_flags = 0; 1559 } 1560 SCTP_INP_RLOCK(it->inp); 1561 SCTP_INP_DECR_REF(it->inp); 1562 SCTP_TCB_LOCK(it->stcb); 1563 atomic_subtract_int(&it->stcb->asoc.refcnt, 1); 1564 iteration_count = 0; 1565 } 1566 KASSERT(it->inp == it->stcb->sctp_ep, 1567 ("%s: stcb %p does not belong to inp %p, but inp %p", 1568 __func__, it->stcb, it->inp, it->stcb->sctp_ep)); 1569 SCTP_INP_RLOCK_ASSERT(it->inp); 1570 SCTP_TCB_LOCK_ASSERT(it->stcb); 1571 1572 /* run function on this one */ 1573 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val); 1574 SCTP_INP_RLOCK_ASSERT(it->inp); 1575 SCTP_TCB_LOCK_ASSERT(it->stcb); 1576 1577 /* 1578 * we lie here, it really needs to have its own type but 1579 * first I must verify that this won't effect things :-0 1580 */ 1581 if (it->no_chunk_output == 0) { 1582 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1583 SCTP_INP_RLOCK_ASSERT(it->inp); 1584 SCTP_TCB_LOCK_ASSERT(it->stcb); 1585 } 1586 1587 SCTP_TCB_UNLOCK(it->stcb); 1588 next_assoc: 1589 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist); 1590 if (it->stcb == NULL) { 1591 /* Run last function */ 1592 if (it->function_inp_end != NULL) { 1593 inp_skip = (*it->function_inp_end) (it->inp, 1594 it->pointer, 1595 it->val); 1596 } 1597 } 1598 } 1599 SCTP_INP_RUNLOCK(it->inp); 1600 no_stcb: 1601 /* done with all assocs on this endpoint, move on to next endpoint */ 1602 it->done_current_ep = 0; 1603 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1604 it->inp = NULL; 1605 } else { 1606 it->inp = LIST_NEXT(it->inp, sctp_list); 1607 } 1608 it->stcb = NULL; 1609 if (it->inp == NULL) { 1610 goto done_with_iterator; 1611 } 1612 goto select_a_new_ep; 1613 } 1614 1615 void 1616 sctp_iterator_worker(void) 1617 { 1618 struct sctp_iterator *it; 1619 1620 /* This function is called with the WQ lock in place */ 1621 sctp_it_ctl.iterator_running = 1; 1622 while ((it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead)) != NULL) { 1623 /* now lets work on this one */ 1624 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); 1625 SCTP_IPI_ITERATOR_WQ_UNLOCK(); 1626 CURVNET_SET(it->vn); 1627 sctp_iterator_work(it); 1628 CURVNET_RESTORE(); 1629 SCTP_IPI_ITERATOR_WQ_LOCK(); 1630 /* sa_ignore FREED_MEMORY */ 1631 } 1632 sctp_it_ctl.iterator_running = 0; 1633 return; 1634 } 1635 1636 static void 1637 sctp_handle_addr_wq(void) 1638 { 1639 /* deal with the ADDR wq from the rtsock calls */ 1640 struct sctp_laddr *wi, *nwi; 1641 struct sctp_asconf_iterator *asc; 1642 1643 SCTP_MALLOC(asc, struct sctp_asconf_iterator *, 1644 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT); 1645 if (asc == NULL) { 1646 /* Try later, no memory */ 1647 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, 1648 (struct sctp_inpcb *)NULL, 1649 (struct sctp_tcb *)NULL, 1650 (struct sctp_nets *)NULL); 1651 return; 1652 } 1653 LIST_INIT(&asc->list_of_work); 1654 asc->cnt = 0; 1655 1656 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) { 1657 LIST_REMOVE(wi, sctp_nxt_addr); 1658 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr); 1659 asc->cnt++; 1660 } 1661 1662 if (asc->cnt == 0) { 1663 SCTP_FREE(asc, SCTP_M_ASC_IT); 1664 } else { 1665 int ret; 1666 1667 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep, 1668 sctp_asconf_iterator_stcb, 1669 NULL, /* No ep end for boundall */ 1670 SCTP_PCB_FLAGS_BOUNDALL, 1671 SCTP_PCB_ANY_FEATURES, 1672 SCTP_ASOC_ANY_STATE, 1673 (void *)asc, 0, 1674 sctp_asconf_iterator_end, NULL, 0); 1675 if (ret) { 1676 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n"); 1677 /* 1678 * Freeing if we are stopping or put back on the 1679 * addr_wq. 1680 */ 1681 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) { 1682 sctp_asconf_iterator_end(asc, 0); 1683 } else { 1684 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) { 1685 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); 1686 } 1687 SCTP_FREE(asc, SCTP_M_ASC_IT); 1688 } 1689 } 1690 } 1691 } 1692 1693 /*- 1694 * The following table shows which pointers for the inp, stcb, or net are 1695 * stored for each timer after it was started. 1696 * 1697 *|Name |Timer |inp |stcb|net | 1698 *|-----------------------------|-----------------------------|----|----|----| 1699 *|SCTP_TIMER_TYPE_SEND |net->rxt_timer |Yes |Yes |Yes | 1700 *|SCTP_TIMER_TYPE_INIT |net->rxt_timer |Yes |Yes |Yes | 1701 *|SCTP_TIMER_TYPE_RECV |stcb->asoc.dack_timer |Yes |Yes |No | 1702 *|SCTP_TIMER_TYPE_SHUTDOWN |net->rxt_timer |Yes |Yes |Yes | 1703 *|SCTP_TIMER_TYPE_HEARTBEAT |net->hb_timer |Yes |Yes |Yes | 1704 *|SCTP_TIMER_TYPE_COOKIE |net->rxt_timer |Yes |Yes |Yes | 1705 *|SCTP_TIMER_TYPE_NEWCOOKIE |inp->sctp_ep.signature_change|Yes |No |No | 1706 *|SCTP_TIMER_TYPE_PATHMTURAISE |net->pmtu_timer |Yes |Yes |Yes | 1707 *|SCTP_TIMER_TYPE_SHUTDOWNACK |net->rxt_timer |Yes |Yes |Yes | 1708 *|SCTP_TIMER_TYPE_ASCONF |stcb->asoc.asconf_timer |Yes |Yes |Yes | 1709 *|SCTP_TIMER_TYPE_SHUTDOWNGUARD|stcb->asoc.shut_guard_timer |Yes |Yes |No | 1710 *|SCTP_TIMER_TYPE_AUTOCLOSE |stcb->asoc.autoclose_timer |Yes |Yes |No | 1711 *|SCTP_TIMER_TYPE_STRRESET |stcb->asoc.strreset_timer |Yes |Yes |No | 1712 *|SCTP_TIMER_TYPE_INPKILL |inp->sctp_ep.signature_change|Yes |No |No | 1713 *|SCTP_TIMER_TYPE_ASOCKILL |stcb->asoc.strreset_timer |Yes |Yes |No | 1714 *|SCTP_TIMER_TYPE_ADDR_WQ |SCTP_BASE_INFO(addr_wq_timer)|No |No |No | 1715 *|SCTP_TIMER_TYPE_PRIM_DELETED |stcb->asoc.delete_prim_timer |Yes |Yes |No | 1716 */ 1717 1718 void 1719 sctp_timeout_handler(void *t) 1720 { 1721 struct epoch_tracker et; 1722 struct timeval tv; 1723 struct sctp_inpcb *inp; 1724 struct sctp_tcb *stcb; 1725 struct sctp_nets *net; 1726 struct sctp_timer *tmr; 1727 struct mbuf *op_err; 1728 int type; 1729 int i, secret; 1730 bool did_output, released_asoc_reference; 1731 1732 /* 1733 * If inp, stcb or net are not NULL, then references to these were 1734 * added when the timer was started, and must be released before 1735 * this function returns. 1736 */ 1737 tmr = (struct sctp_timer *)t; 1738 inp = (struct sctp_inpcb *)tmr->ep; 1739 stcb = (struct sctp_tcb *)tmr->tcb; 1740 net = (struct sctp_nets *)tmr->net; 1741 CURVNET_SET((struct vnet *)tmr->vnet); 1742 NET_EPOCH_ENTER(et); 1743 released_asoc_reference = false; 1744 1745 #ifdef SCTP_AUDITING_ENABLED 1746 sctp_audit_log(0xF0, (uint8_t)tmr->type); 1747 sctp_auditing(3, inp, stcb, net); 1748 #endif 1749 1750 /* sanity checks... */ 1751 KASSERT(tmr->self == NULL || tmr->self == tmr, 1752 ("sctp_timeout_handler: tmr->self corrupted")); 1753 KASSERT(SCTP_IS_TIMER_TYPE_VALID(tmr->type), 1754 ("sctp_timeout_handler: invalid timer type %d", tmr->type)); 1755 type = tmr->type; 1756 KASSERT(stcb == NULL || stcb->sctp_ep == inp, 1757 ("sctp_timeout_handler of type %d: inp = %p, stcb->sctp_ep %p", 1758 type, stcb, stcb->sctp_ep)); 1759 tmr->stopped_from = 0xa001; 1760 if ((stcb != NULL) && (stcb->asoc.state == SCTP_STATE_EMPTY)) { 1761 SCTPDBG(SCTP_DEBUG_TIMER2, 1762 "Timer type %d handler exiting due to CLOSED association.\n", 1763 type); 1764 goto out_decr; 1765 } 1766 tmr->stopped_from = 0xa002; 1767 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d goes off.\n", type); 1768 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1769 SCTPDBG(SCTP_DEBUG_TIMER2, 1770 "Timer type %d handler exiting due to not being active.\n", 1771 type); 1772 goto out_decr; 1773 } 1774 1775 tmr->stopped_from = 0xa003; 1776 if (stcb) { 1777 SCTP_TCB_LOCK(stcb); 1778 /* 1779 * Release reference so that association can be freed if 1780 * necessary below. This is safe now that we have acquired 1781 * the lock. 1782 */ 1783 atomic_subtract_int(&stcb->asoc.refcnt, 1); 1784 released_asoc_reference = true; 1785 if ((type != SCTP_TIMER_TYPE_ASOCKILL) && 1786 ((stcb->asoc.state == SCTP_STATE_EMPTY) || 1787 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) { 1788 SCTPDBG(SCTP_DEBUG_TIMER2, 1789 "Timer type %d handler exiting due to CLOSED association.\n", 1790 type); 1791 goto out; 1792 } 1793 } else if (inp != NULL) { 1794 SCTP_INP_WLOCK(inp); 1795 } else { 1796 SCTP_WQ_ADDR_LOCK(); 1797 } 1798 1799 /* Record in stopped_from which timeout occurred. */ 1800 tmr->stopped_from = type; 1801 /* mark as being serviced now */ 1802 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 1803 /* 1804 * Callout has been rescheduled. 1805 */ 1806 goto out; 1807 } 1808 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1809 /* 1810 * Not active, so no action. 1811 */ 1812 goto out; 1813 } 1814 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer); 1815 1816 /* call the handler for the appropriate timer type */ 1817 switch (type) { 1818 case SCTP_TIMER_TYPE_SEND: 1819 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1820 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1821 type, inp, stcb, net)); 1822 SCTP_STAT_INCR(sctps_timodata); 1823 stcb->asoc.timodata++; 1824 stcb->asoc.num_send_timers_up--; 1825 if (stcb->asoc.num_send_timers_up < 0) { 1826 stcb->asoc.num_send_timers_up = 0; 1827 } 1828 SCTP_TCB_LOCK_ASSERT(stcb); 1829 if (sctp_t3rxt_timer(inp, stcb, net)) { 1830 /* no need to unlock on tcb its gone */ 1831 1832 goto out_decr; 1833 } 1834 SCTP_TCB_LOCK_ASSERT(stcb); 1835 #ifdef SCTP_AUDITING_ENABLED 1836 sctp_auditing(4, inp, stcb, net); 1837 #endif 1838 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1839 did_output = true; 1840 if ((stcb->asoc.num_send_timers_up == 0) && 1841 (stcb->asoc.sent_queue_cnt > 0)) { 1842 struct sctp_tmit_chunk *chk; 1843 1844 /* 1845 * Safeguard. If there on some on the sent queue 1846 * somewhere but no timers running something is 1847 * wrong... so we start a timer on the first chunk 1848 * on the send queue on whatever net it is sent to. 1849 */ 1850 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 1851 if (chk->whoTo != NULL) { 1852 break; 1853 } 1854 } 1855 if (chk != NULL) { 1856 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo); 1857 } 1858 } 1859 break; 1860 case SCTP_TIMER_TYPE_INIT: 1861 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1862 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1863 type, inp, stcb, net)); 1864 SCTP_STAT_INCR(sctps_timoinit); 1865 stcb->asoc.timoinit++; 1866 if (sctp_t1init_timer(inp, stcb, net)) { 1867 /* no need to unlock on tcb its gone */ 1868 goto out_decr; 1869 } 1870 did_output = false; 1871 break; 1872 case SCTP_TIMER_TYPE_RECV: 1873 KASSERT(inp != NULL && stcb != NULL && net == NULL, 1874 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1875 type, inp, stcb, net)); 1876 SCTP_STAT_INCR(sctps_timosack); 1877 stcb->asoc.timosack++; 1878 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); 1879 #ifdef SCTP_AUDITING_ENABLED 1880 sctp_auditing(4, inp, stcb, NULL); 1881 #endif 1882 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED); 1883 did_output = true; 1884 break; 1885 case SCTP_TIMER_TYPE_SHUTDOWN: 1886 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1887 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1888 type, inp, stcb, net)); 1889 SCTP_STAT_INCR(sctps_timoshutdown); 1890 stcb->asoc.timoshutdown++; 1891 if (sctp_shutdown_timer(inp, stcb, net)) { 1892 /* no need to unlock on tcb its gone */ 1893 goto out_decr; 1894 } 1895 #ifdef SCTP_AUDITING_ENABLED 1896 sctp_auditing(4, inp, stcb, net); 1897 #endif 1898 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED); 1899 did_output = true; 1900 break; 1901 case SCTP_TIMER_TYPE_HEARTBEAT: 1902 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1903 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1904 type, inp, stcb, net)); 1905 SCTP_STAT_INCR(sctps_timoheartbeat); 1906 stcb->asoc.timoheartbeat++; 1907 if (sctp_heartbeat_timer(inp, stcb, net)) { 1908 /* no need to unlock on tcb its gone */ 1909 goto out_decr; 1910 } 1911 #ifdef SCTP_AUDITING_ENABLED 1912 sctp_auditing(4, inp, stcb, net); 1913 #endif 1914 if ((net->dest_state & SCTP_ADDR_NOHB) == 0) { 1915 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); 1916 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED); 1917 did_output = true; 1918 } else { 1919 did_output = false; 1920 } 1921 break; 1922 case SCTP_TIMER_TYPE_COOKIE: 1923 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1924 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1925 type, inp, stcb, net)); 1926 SCTP_STAT_INCR(sctps_timocookie); 1927 stcb->asoc.timocookie++; 1928 if (sctp_cookie_timer(inp, stcb, net)) { 1929 /* no need to unlock on tcb its gone */ 1930 goto out_decr; 1931 } 1932 #ifdef SCTP_AUDITING_ENABLED 1933 sctp_auditing(4, inp, stcb, net); 1934 #endif 1935 /* 1936 * We consider T3 and Cookie timer pretty much the same with 1937 * respect to where from in chunk_output. 1938 */ 1939 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1940 did_output = true; 1941 break; 1942 case SCTP_TIMER_TYPE_NEWCOOKIE: 1943 KASSERT(inp != NULL && stcb == NULL && net == NULL, 1944 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1945 type, inp, stcb, net)); 1946 SCTP_STAT_INCR(sctps_timosecret); 1947 (void)SCTP_GETTIME_TIMEVAL(&tv); 1948 inp->sctp_ep.time_of_secret_change = (unsigned int)tv.tv_sec; 1949 inp->sctp_ep.last_secret_number = 1950 inp->sctp_ep.current_secret_number; 1951 inp->sctp_ep.current_secret_number++; 1952 if (inp->sctp_ep.current_secret_number >= 1953 SCTP_HOW_MANY_SECRETS) { 1954 inp->sctp_ep.current_secret_number = 0; 1955 } 1956 secret = (int)inp->sctp_ep.current_secret_number; 1957 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) { 1958 inp->sctp_ep.secret_key[secret][i] = 1959 sctp_select_initial_TSN(&inp->sctp_ep); 1960 } 1961 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL); 1962 did_output = false; 1963 break; 1964 case SCTP_TIMER_TYPE_PATHMTURAISE: 1965 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1966 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1967 type, inp, stcb, net)); 1968 SCTP_STAT_INCR(sctps_timopathmtu); 1969 sctp_pathmtu_timer(inp, stcb, net); 1970 did_output = false; 1971 break; 1972 case SCTP_TIMER_TYPE_SHUTDOWNACK: 1973 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1974 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1975 type, inp, stcb, net)); 1976 if (sctp_shutdownack_timer(inp, stcb, net)) { 1977 /* no need to unlock on tcb its gone */ 1978 goto out_decr; 1979 } 1980 SCTP_STAT_INCR(sctps_timoshutdownack); 1981 stcb->asoc.timoshutdownack++; 1982 #ifdef SCTP_AUDITING_ENABLED 1983 sctp_auditing(4, inp, stcb, net); 1984 #endif 1985 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED); 1986 did_output = true; 1987 break; 1988 case SCTP_TIMER_TYPE_ASCONF: 1989 KASSERT(inp != NULL && stcb != NULL && net != NULL, 1990 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 1991 type, inp, stcb, net)); 1992 SCTP_STAT_INCR(sctps_timoasconf); 1993 if (sctp_asconf_timer(inp, stcb, net)) { 1994 /* no need to unlock on tcb its gone */ 1995 goto out_decr; 1996 } 1997 #ifdef SCTP_AUDITING_ENABLED 1998 sctp_auditing(4, inp, stcb, net); 1999 #endif 2000 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED); 2001 did_output = true; 2002 break; 2003 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2004 KASSERT(inp != NULL && stcb != NULL && net == NULL, 2005 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2006 type, inp, stcb, net)); 2007 SCTP_STAT_INCR(sctps_timoshutdownguard); 2008 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), 2009 "Shutdown guard timer expired"); 2010 sctp_abort_an_association(inp, stcb, op_err, true, SCTP_SO_NOT_LOCKED); 2011 /* no need to unlock on tcb its gone */ 2012 goto out_decr; 2013 case SCTP_TIMER_TYPE_AUTOCLOSE: 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_timoautoclose); 2018 sctp_autoclose_timer(inp, stcb); 2019 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED); 2020 did_output = true; 2021 break; 2022 case SCTP_TIMER_TYPE_STRRESET: 2023 KASSERT(inp != NULL && stcb != NULL && net == NULL, 2024 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2025 type, inp, stcb, net)); 2026 SCTP_STAT_INCR(sctps_timostrmrst); 2027 if (sctp_strreset_timer(inp, stcb)) { 2028 /* no need to unlock on tcb its gone */ 2029 goto out_decr; 2030 } 2031 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED); 2032 did_output = true; 2033 break; 2034 case SCTP_TIMER_TYPE_INPKILL: 2035 KASSERT(inp != NULL && stcb == NULL && net == NULL, 2036 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2037 type, inp, stcb, net)); 2038 SCTP_STAT_INCR(sctps_timoinpkill); 2039 /* 2040 * special case, take away our increment since WE are the 2041 * killer 2042 */ 2043 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, 2044 SCTP_FROM_SCTPUTIL + SCTP_LOC_3); 2045 SCTP_INP_DECR_REF(inp); 2046 SCTP_INP_WUNLOCK(inp); 2047 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 2048 SCTP_CALLED_FROM_INPKILL_TIMER); 2049 inp = NULL; 2050 goto out_decr; 2051 case SCTP_TIMER_TYPE_ASOCKILL: 2052 KASSERT(inp != NULL && stcb != NULL && net == NULL, 2053 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2054 type, inp, stcb, net)); 2055 SCTP_STAT_INCR(sctps_timoassockill); 2056 /* Can we free it yet? */ 2057 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, 2058 SCTP_FROM_SCTPUTIL + SCTP_LOC_1); 2059 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 2060 SCTP_FROM_SCTPUTIL + SCTP_LOC_2); 2061 /* 2062 * free asoc, always unlocks (or destroy's) so prevent 2063 * duplicate unlock or unlock of a free mtx :-0 2064 */ 2065 stcb = NULL; 2066 goto out_decr; 2067 case SCTP_TIMER_TYPE_ADDR_WQ: 2068 KASSERT(inp == NULL && stcb == NULL && net == NULL, 2069 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2070 type, inp, stcb, net)); 2071 sctp_handle_addr_wq(); 2072 did_output = true; 2073 break; 2074 case SCTP_TIMER_TYPE_PRIM_DELETED: 2075 KASSERT(inp != NULL && stcb != NULL && net == NULL, 2076 ("timeout of type %d: inp = %p, stcb = %p, net = %p", 2077 type, inp, stcb, net)); 2078 SCTP_STAT_INCR(sctps_timodelprim); 2079 sctp_delete_prim_timer(inp, stcb); 2080 did_output = false; 2081 break; 2082 default: 2083 #ifdef INVARIANTS 2084 panic("Unknown timer type %d", type); 2085 #else 2086 goto out; 2087 #endif 2088 } 2089 #ifdef SCTP_AUDITING_ENABLED 2090 sctp_audit_log(0xF1, (uint8_t)type); 2091 if (inp != NULL) 2092 sctp_auditing(5, inp, stcb, net); 2093 #endif 2094 if (did_output && (stcb != NULL)) { 2095 /* 2096 * Now we need to clean up the control chunk chain if an 2097 * ECNE is on it. It must be marked as UNSENT again so next 2098 * call will continue to send it until such time that we get 2099 * a CWR, to remove it. It is, however, less likely that we 2100 * will find a ecn echo on the chain though. 2101 */ 2102 sctp_fix_ecn_echo(&stcb->asoc); 2103 } 2104 out: 2105 if (stcb != NULL) { 2106 SCTP_TCB_UNLOCK(stcb); 2107 } else if (inp != NULL) { 2108 SCTP_INP_WUNLOCK(inp); 2109 } else { 2110 SCTP_WQ_ADDR_UNLOCK(); 2111 } 2112 2113 out_decr: 2114 /* These reference counts were incremented in sctp_timer_start(). */ 2115 if (inp != NULL) { 2116 SCTP_INP_DECR_REF(inp); 2117 } 2118 if ((stcb != NULL) && !released_asoc_reference) { 2119 atomic_subtract_int(&stcb->asoc.refcnt, 1); 2120 } 2121 if (net != NULL) { 2122 sctp_free_remote_addr(net); 2123 } 2124 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d handler finished.\n", type); 2125 CURVNET_RESTORE(); 2126 NET_EPOCH_EXIT(et); 2127 } 2128 2129 /*- 2130 * The following table shows which parameters must be provided 2131 * when calling sctp_timer_start(). For parameters not being 2132 * provided, NULL must be used. 2133 * 2134 * |Name |inp |stcb|net | 2135 * |-----------------------------|----|----|----| 2136 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes | 2137 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes | 2138 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No | 2139 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes | 2140 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes | 2141 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes | 2142 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No | 2143 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes | 2144 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes | 2145 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |Yes | 2146 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No | 2147 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No | 2148 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |Yes | 2149 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No | 2150 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No | 2151 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No | 2152 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No | 2153 * 2154 */ 2155 2156 void 2157 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 2158 struct sctp_nets *net) 2159 { 2160 struct sctp_timer *tmr; 2161 uint32_t to_ticks; 2162 uint32_t rndval, jitter; 2163 2164 KASSERT(stcb == NULL || stcb->sctp_ep == inp, 2165 ("sctp_timer_start of type %d: inp = %p, stcb->sctp_ep %p", 2166 t_type, stcb, stcb->sctp_ep)); 2167 tmr = NULL; 2168 if (stcb != NULL) { 2169 SCTP_TCB_LOCK_ASSERT(stcb); 2170 } else if (inp != NULL) { 2171 SCTP_INP_WLOCK_ASSERT(inp); 2172 } else { 2173 SCTP_WQ_ADDR_LOCK_ASSERT(); 2174 } 2175 if (stcb != NULL) { 2176 /* 2177 * Don't restart timer on association that's about to be 2178 * killed. 2179 */ 2180 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) && 2181 (t_type != SCTP_TIMER_TYPE_ASOCKILL)) { 2182 SCTPDBG(SCTP_DEBUG_TIMER2, 2183 "Timer type %d not started: inp=%p, stcb=%p, net=%p (stcb deleted).\n", 2184 t_type, inp, stcb, net); 2185 return; 2186 } 2187 /* Don't restart timer on net that's been removed. */ 2188 if (net != NULL && (net->dest_state & SCTP_ADDR_BEING_DELETED)) { 2189 SCTPDBG(SCTP_DEBUG_TIMER2, 2190 "Timer type %d not started: inp=%p, stcb=%p, net=%p (net deleted).\n", 2191 t_type, inp, stcb, net); 2192 return; 2193 } 2194 } 2195 switch (t_type) { 2196 case SCTP_TIMER_TYPE_SEND: 2197 /* Here we use the RTO timer. */ 2198 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2199 #ifdef INVARIANTS 2200 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2201 t_type, inp, stcb, net); 2202 #else 2203 return; 2204 #endif 2205 } 2206 tmr = &net->rxt_timer; 2207 if (net->RTO == 0) { 2208 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2209 } else { 2210 to_ticks = sctp_msecs_to_ticks(net->RTO); 2211 } 2212 break; 2213 case SCTP_TIMER_TYPE_INIT: 2214 /* 2215 * Here we use the INIT timer default usually about 1 2216 * second. 2217 */ 2218 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2219 #ifdef INVARIANTS 2220 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2221 t_type, inp, stcb, net); 2222 #else 2223 return; 2224 #endif 2225 } 2226 tmr = &net->rxt_timer; 2227 if (net->RTO == 0) { 2228 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2229 } else { 2230 to_ticks = sctp_msecs_to_ticks(net->RTO); 2231 } 2232 break; 2233 case SCTP_TIMER_TYPE_RECV: 2234 /* 2235 * Here we use the Delayed-Ack timer value from the inp, 2236 * usually about 200ms. 2237 */ 2238 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2239 #ifdef INVARIANTS 2240 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2241 t_type, inp, stcb, net); 2242 #else 2243 return; 2244 #endif 2245 } 2246 tmr = &stcb->asoc.dack_timer; 2247 to_ticks = sctp_msecs_to_ticks(stcb->asoc.delayed_ack); 2248 break; 2249 case SCTP_TIMER_TYPE_SHUTDOWN: 2250 /* Here we use the RTO of the destination. */ 2251 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2252 #ifdef INVARIANTS 2253 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2254 t_type, inp, stcb, net); 2255 #else 2256 return; 2257 #endif 2258 } 2259 tmr = &net->rxt_timer; 2260 if (net->RTO == 0) { 2261 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2262 } else { 2263 to_ticks = sctp_msecs_to_ticks(net->RTO); 2264 } 2265 break; 2266 case SCTP_TIMER_TYPE_HEARTBEAT: 2267 /* 2268 * The net is used here so that we can add in the RTO. Even 2269 * though we use a different timer. We also add the HB timer 2270 * PLUS a random jitter. 2271 */ 2272 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2273 #ifdef INVARIANTS 2274 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2275 t_type, inp, stcb, net); 2276 #else 2277 return; 2278 #endif 2279 } 2280 if ((net->dest_state & SCTP_ADDR_NOHB) && 2281 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) { 2282 SCTPDBG(SCTP_DEBUG_TIMER2, 2283 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n", 2284 t_type, inp, stcb, net); 2285 return; 2286 } 2287 tmr = &net->hb_timer; 2288 if (net->RTO == 0) { 2289 to_ticks = stcb->asoc.initial_rto; 2290 } else { 2291 to_ticks = net->RTO; 2292 } 2293 rndval = sctp_select_initial_TSN(&inp->sctp_ep); 2294 jitter = rndval % to_ticks; 2295 if (to_ticks > 1) { 2296 to_ticks >>= 1; 2297 } 2298 if (jitter < (UINT32_MAX - to_ticks)) { 2299 to_ticks += jitter; 2300 } else { 2301 to_ticks = UINT32_MAX; 2302 } 2303 if (!((net->dest_state & SCTP_ADDR_UNCONFIRMED) && 2304 (net->dest_state & SCTP_ADDR_REACHABLE)) && 2305 ((net->dest_state & SCTP_ADDR_PF) == 0)) { 2306 if (net->heart_beat_delay < (UINT32_MAX - to_ticks)) { 2307 to_ticks += net->heart_beat_delay; 2308 } else { 2309 to_ticks = UINT32_MAX; 2310 } 2311 } 2312 /* 2313 * Now we must convert the to_ticks that are now in ms to 2314 * ticks. 2315 */ 2316 to_ticks = sctp_msecs_to_ticks(to_ticks); 2317 break; 2318 case SCTP_TIMER_TYPE_COOKIE: 2319 /* 2320 * Here we can use the RTO timer from the network since one 2321 * RTT was complete. If a retransmission happened then we 2322 * will be using the RTO initial value. 2323 */ 2324 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2325 #ifdef INVARIANTS 2326 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2327 t_type, inp, stcb, net); 2328 #else 2329 return; 2330 #endif 2331 } 2332 tmr = &net->rxt_timer; 2333 if (net->RTO == 0) { 2334 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2335 } else { 2336 to_ticks = sctp_msecs_to_ticks(net->RTO); 2337 } 2338 break; 2339 case SCTP_TIMER_TYPE_NEWCOOKIE: 2340 /* 2341 * Nothing needed but the endpoint here usually about 60 2342 * minutes. 2343 */ 2344 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) { 2345 #ifdef INVARIANTS 2346 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2347 t_type, inp, stcb, net); 2348 #else 2349 return; 2350 #endif 2351 } 2352 tmr = &inp->sctp_ep.signature_change; 2353 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE]; 2354 break; 2355 case SCTP_TIMER_TYPE_PATHMTURAISE: 2356 /* 2357 * Here we use the value found in the EP for PMTUD, usually 2358 * about 10 minutes. 2359 */ 2360 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2361 #ifdef INVARIANTS 2362 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2363 t_type, inp, stcb, net); 2364 #else 2365 return; 2366 #endif 2367 } 2368 if (net->dest_state & SCTP_ADDR_NO_PMTUD) { 2369 SCTPDBG(SCTP_DEBUG_TIMER2, 2370 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n", 2371 t_type, inp, stcb, net); 2372 return; 2373 } 2374 tmr = &net->pmtu_timer; 2375 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU]; 2376 break; 2377 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2378 /* Here we use the RTO of the destination. */ 2379 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2380 #ifdef INVARIANTS 2381 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2382 t_type, inp, stcb, net); 2383 #else 2384 return; 2385 #endif 2386 } 2387 tmr = &net->rxt_timer; 2388 if (net->RTO == 0) { 2389 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2390 } else { 2391 to_ticks = sctp_msecs_to_ticks(net->RTO); 2392 } 2393 break; 2394 case SCTP_TIMER_TYPE_ASCONF: 2395 /* 2396 * Here the timer comes from the stcb but its value is from 2397 * the net's RTO. 2398 */ 2399 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2400 #ifdef INVARIANTS 2401 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2402 t_type, inp, stcb, net); 2403 #else 2404 return; 2405 #endif 2406 } 2407 tmr = &stcb->asoc.asconf_timer; 2408 if (net->RTO == 0) { 2409 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2410 } else { 2411 to_ticks = sctp_msecs_to_ticks(net->RTO); 2412 } 2413 break; 2414 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2415 /* 2416 * Here we use the endpoints shutdown guard timer usually 2417 * about 3 minutes. 2418 */ 2419 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2420 #ifdef INVARIANTS 2421 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2422 t_type, inp, stcb, net); 2423 #else 2424 return; 2425 #endif 2426 } 2427 tmr = &stcb->asoc.shut_guard_timer; 2428 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) { 2429 if (stcb->asoc.maxrto < UINT32_MAX / 5) { 2430 to_ticks = sctp_msecs_to_ticks(5 * stcb->asoc.maxrto); 2431 } else { 2432 to_ticks = sctp_msecs_to_ticks(UINT32_MAX); 2433 } 2434 } else { 2435 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN]; 2436 } 2437 break; 2438 case SCTP_TIMER_TYPE_AUTOCLOSE: 2439 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2440 #ifdef INVARIANTS 2441 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2442 t_type, inp, stcb, net); 2443 #else 2444 return; 2445 #endif 2446 } 2447 tmr = &stcb->asoc.autoclose_timer; 2448 to_ticks = stcb->asoc.sctp_autoclose_ticks; 2449 break; 2450 case SCTP_TIMER_TYPE_STRRESET: 2451 /* 2452 * Here the timer comes from the stcb but its value is from 2453 * the net's RTO. 2454 */ 2455 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2456 #ifdef INVARIANTS 2457 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2458 t_type, inp, stcb, net); 2459 #else 2460 return; 2461 #endif 2462 } 2463 tmr = &stcb->asoc.strreset_timer; 2464 if (net->RTO == 0) { 2465 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2466 } else { 2467 to_ticks = sctp_msecs_to_ticks(net->RTO); 2468 } 2469 break; 2470 case SCTP_TIMER_TYPE_INPKILL: 2471 /* 2472 * The inp is setup to die. We re-use the signature_change 2473 * timer since that has stopped and we are in the GONE 2474 * state. 2475 */ 2476 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) { 2477 #ifdef INVARIANTS 2478 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2479 t_type, inp, stcb, net); 2480 #else 2481 return; 2482 #endif 2483 } 2484 tmr = &inp->sctp_ep.signature_change; 2485 to_ticks = sctp_msecs_to_ticks(SCTP_INP_KILL_TIMEOUT); 2486 break; 2487 case SCTP_TIMER_TYPE_ASOCKILL: 2488 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2489 #ifdef INVARIANTS 2490 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2491 t_type, inp, stcb, net); 2492 #else 2493 return; 2494 #endif 2495 } 2496 tmr = &stcb->asoc.strreset_timer; 2497 to_ticks = sctp_msecs_to_ticks(SCTP_ASOC_KILL_TIMEOUT); 2498 break; 2499 case SCTP_TIMER_TYPE_ADDR_WQ: 2500 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) { 2501 #ifdef INVARIANTS 2502 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2503 t_type, inp, stcb, net); 2504 #else 2505 return; 2506 #endif 2507 } 2508 /* Only 1 tick away :-) */ 2509 tmr = &SCTP_BASE_INFO(addr_wq_timer); 2510 to_ticks = SCTP_ADDRESS_TICK_DELAY; 2511 break; 2512 case SCTP_TIMER_TYPE_PRIM_DELETED: 2513 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2514 #ifdef INVARIANTS 2515 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p", 2516 t_type, inp, stcb, net); 2517 #else 2518 return; 2519 #endif 2520 } 2521 tmr = &stcb->asoc.delete_prim_timer; 2522 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto); 2523 break; 2524 default: 2525 #ifdef INVARIANTS 2526 panic("Unknown timer type %d", t_type); 2527 #else 2528 return; 2529 #endif 2530 } 2531 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type)); 2532 KASSERT(to_ticks > 0, ("to_ticks == 0 for timer type %d", t_type)); 2533 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 2534 /* 2535 * We do NOT allow you to have it already running. If it is, 2536 * we leave the current one up unchanged. 2537 */ 2538 SCTPDBG(SCTP_DEBUG_TIMER2, 2539 "Timer type %d already running: inp=%p, stcb=%p, net=%p.\n", 2540 t_type, inp, stcb, net); 2541 return; 2542 } 2543 /* At this point we can proceed. */ 2544 if (t_type == SCTP_TIMER_TYPE_SEND) { 2545 stcb->asoc.num_send_timers_up++; 2546 } 2547 tmr->stopped_from = 0; 2548 tmr->type = t_type; 2549 tmr->ep = (void *)inp; 2550 tmr->tcb = (void *)stcb; 2551 if (t_type == SCTP_TIMER_TYPE_STRRESET) { 2552 tmr->net = NULL; 2553 } else { 2554 tmr->net = (void *)net; 2555 } 2556 tmr->self = (void *)tmr; 2557 tmr->vnet = (void *)curvnet; 2558 tmr->ticks = sctp_get_tick_count(); 2559 if (SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr) == 0) { 2560 SCTPDBG(SCTP_DEBUG_TIMER2, 2561 "Timer type %d started: ticks=%u, inp=%p, stcb=%p, net=%p.\n", 2562 t_type, to_ticks, inp, stcb, net); 2563 /* 2564 * If this is a newly scheduled callout, as opposed to a 2565 * rescheduled one, increment relevant reference counts. 2566 */ 2567 if (tmr->ep != NULL) { 2568 SCTP_INP_INCR_REF(inp); 2569 } 2570 if (tmr->tcb != NULL) { 2571 atomic_add_int(&stcb->asoc.refcnt, 1); 2572 } 2573 if (tmr->net != NULL) { 2574 atomic_add_int(&net->ref_count, 1); 2575 } 2576 } else { 2577 /* 2578 * This should not happen, since we checked for pending 2579 * above. 2580 */ 2581 SCTPDBG(SCTP_DEBUG_TIMER2, 2582 "Timer type %d restarted: ticks=%u, inp=%p, stcb=%p, net=%p.\n", 2583 t_type, to_ticks, inp, stcb, net); 2584 } 2585 return; 2586 } 2587 2588 /*- 2589 * The following table shows which parameters must be provided 2590 * when calling sctp_timer_stop(). For parameters not being 2591 * provided, NULL must be used. 2592 * 2593 * |Name |inp |stcb|net | 2594 * |-----------------------------|----|----|----| 2595 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes | 2596 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes | 2597 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No | 2598 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes | 2599 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes | 2600 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes | 2601 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No | 2602 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes | 2603 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes | 2604 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |No | 2605 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No | 2606 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No | 2607 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |No | 2608 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No | 2609 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No | 2610 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No | 2611 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No | 2612 * 2613 */ 2614 2615 void 2616 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 2617 struct sctp_nets *net, uint32_t from) 2618 { 2619 struct sctp_timer *tmr; 2620 2621 KASSERT(stcb == NULL || stcb->sctp_ep == inp, 2622 ("sctp_timer_stop of type %d: inp = %p, stcb->sctp_ep %p", 2623 t_type, stcb, stcb->sctp_ep)); 2624 if (stcb != NULL) { 2625 SCTP_TCB_LOCK_ASSERT(stcb); 2626 } else if (inp != NULL) { 2627 SCTP_INP_WLOCK_ASSERT(inp); 2628 } else { 2629 SCTP_WQ_ADDR_LOCK_ASSERT(); 2630 } 2631 tmr = NULL; 2632 switch (t_type) { 2633 case SCTP_TIMER_TYPE_SEND: 2634 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2635 #ifdef INVARIANTS 2636 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2637 t_type, inp, stcb, net); 2638 #else 2639 return; 2640 #endif 2641 } 2642 tmr = &net->rxt_timer; 2643 break; 2644 case SCTP_TIMER_TYPE_INIT: 2645 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2646 #ifdef INVARIANTS 2647 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2648 t_type, inp, stcb, net); 2649 #else 2650 return; 2651 #endif 2652 } 2653 tmr = &net->rxt_timer; 2654 break; 2655 case SCTP_TIMER_TYPE_RECV: 2656 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2657 #ifdef INVARIANTS 2658 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2659 t_type, inp, stcb, net); 2660 #else 2661 return; 2662 #endif 2663 } 2664 tmr = &stcb->asoc.dack_timer; 2665 break; 2666 case SCTP_TIMER_TYPE_SHUTDOWN: 2667 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2668 #ifdef INVARIANTS 2669 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2670 t_type, inp, stcb, net); 2671 #else 2672 return; 2673 #endif 2674 } 2675 tmr = &net->rxt_timer; 2676 break; 2677 case SCTP_TIMER_TYPE_HEARTBEAT: 2678 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2679 #ifdef INVARIANTS 2680 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2681 t_type, inp, stcb, net); 2682 #else 2683 return; 2684 #endif 2685 } 2686 tmr = &net->hb_timer; 2687 break; 2688 case SCTP_TIMER_TYPE_COOKIE: 2689 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2690 #ifdef INVARIANTS 2691 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2692 t_type, inp, stcb, net); 2693 #else 2694 return; 2695 #endif 2696 } 2697 tmr = &net->rxt_timer; 2698 break; 2699 case SCTP_TIMER_TYPE_NEWCOOKIE: 2700 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) { 2701 #ifdef INVARIANTS 2702 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2703 t_type, inp, stcb, net); 2704 #else 2705 return; 2706 #endif 2707 } 2708 tmr = &inp->sctp_ep.signature_change; 2709 break; 2710 case SCTP_TIMER_TYPE_PATHMTURAISE: 2711 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2712 #ifdef INVARIANTS 2713 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2714 t_type, inp, stcb, net); 2715 #else 2716 return; 2717 #endif 2718 } 2719 tmr = &net->pmtu_timer; 2720 break; 2721 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2722 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 2723 #ifdef INVARIANTS 2724 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2725 t_type, inp, stcb, net); 2726 #else 2727 return; 2728 #endif 2729 } 2730 tmr = &net->rxt_timer; 2731 break; 2732 case SCTP_TIMER_TYPE_ASCONF: 2733 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2734 #ifdef INVARIANTS 2735 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2736 t_type, inp, stcb, net); 2737 #else 2738 return; 2739 #endif 2740 } 2741 tmr = &stcb->asoc.asconf_timer; 2742 break; 2743 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2744 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2745 #ifdef INVARIANTS 2746 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2747 t_type, inp, stcb, net); 2748 #else 2749 return; 2750 #endif 2751 } 2752 tmr = &stcb->asoc.shut_guard_timer; 2753 break; 2754 case SCTP_TIMER_TYPE_AUTOCLOSE: 2755 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2756 #ifdef INVARIANTS 2757 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2758 t_type, inp, stcb, net); 2759 #else 2760 return; 2761 #endif 2762 } 2763 tmr = &stcb->asoc.autoclose_timer; 2764 break; 2765 case SCTP_TIMER_TYPE_STRRESET: 2766 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2767 #ifdef INVARIANTS 2768 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2769 t_type, inp, stcb, net); 2770 #else 2771 return; 2772 #endif 2773 } 2774 tmr = &stcb->asoc.strreset_timer; 2775 break; 2776 case SCTP_TIMER_TYPE_INPKILL: 2777 /* 2778 * The inp is setup to die. We re-use the signature_change 2779 * timer since that has stopped and we are in the GONE 2780 * state. 2781 */ 2782 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) { 2783 #ifdef INVARIANTS 2784 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2785 t_type, inp, stcb, net); 2786 #else 2787 return; 2788 #endif 2789 } 2790 tmr = &inp->sctp_ep.signature_change; 2791 break; 2792 case SCTP_TIMER_TYPE_ASOCKILL: 2793 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2794 #ifdef INVARIANTS 2795 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2796 t_type, inp, stcb, net); 2797 #else 2798 return; 2799 #endif 2800 } 2801 tmr = &stcb->asoc.strreset_timer; 2802 break; 2803 case SCTP_TIMER_TYPE_ADDR_WQ: 2804 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) { 2805 #ifdef INVARIANTS 2806 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2807 t_type, inp, stcb, net); 2808 #else 2809 return; 2810 #endif 2811 } 2812 tmr = &SCTP_BASE_INFO(addr_wq_timer); 2813 break; 2814 case SCTP_TIMER_TYPE_PRIM_DELETED: 2815 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) { 2816 #ifdef INVARIANTS 2817 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p", 2818 t_type, inp, stcb, net); 2819 #else 2820 return; 2821 #endif 2822 } 2823 tmr = &stcb->asoc.delete_prim_timer; 2824 break; 2825 default: 2826 #ifdef INVARIANTS 2827 panic("Unknown timer type %d", t_type); 2828 #else 2829 return; 2830 #endif 2831 } 2832 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type)); 2833 if ((tmr->type != SCTP_TIMER_TYPE_NONE) && 2834 (tmr->type != t_type)) { 2835 /* 2836 * Ok we have a timer that is under joint use. Cookie timer 2837 * per chance with the SEND timer. We therefore are NOT 2838 * running the timer that the caller wants stopped. So just 2839 * return. 2840 */ 2841 SCTPDBG(SCTP_DEBUG_TIMER2, 2842 "Shared timer type %d not running: inp=%p, stcb=%p, net=%p.\n", 2843 t_type, inp, stcb, net); 2844 return; 2845 } 2846 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) { 2847 stcb->asoc.num_send_timers_up--; 2848 if (stcb->asoc.num_send_timers_up < 0) { 2849 stcb->asoc.num_send_timers_up = 0; 2850 } 2851 } 2852 tmr->self = NULL; 2853 tmr->stopped_from = from; 2854 if (SCTP_OS_TIMER_STOP(&tmr->timer) == 1) { 2855 KASSERT(tmr->ep == inp, 2856 ("sctp_timer_stop of type %d: inp = %p, tmr->inp = %p", 2857 t_type, inp, tmr->ep)); 2858 KASSERT(tmr->tcb == stcb, 2859 ("sctp_timer_stop of type %d: stcb = %p, tmr->stcb = %p", 2860 t_type, stcb, tmr->tcb)); 2861 KASSERT(((t_type == SCTP_TIMER_TYPE_ASCONF) && (tmr->net != NULL)) || 2862 ((t_type != SCTP_TIMER_TYPE_ASCONF) && (tmr->net == net)), 2863 ("sctp_timer_stop of type %d: net = %p, tmr->net = %p", 2864 t_type, net, tmr->net)); 2865 SCTPDBG(SCTP_DEBUG_TIMER2, 2866 "Timer type %d stopped: inp=%p, stcb=%p, net=%p.\n", 2867 t_type, inp, stcb, net); 2868 /* 2869 * If the timer was actually stopped, decrement reference 2870 * counts that were incremented in sctp_timer_start(). 2871 */ 2872 if (tmr->ep != NULL) { 2873 tmr->ep = NULL; 2874 SCTP_INP_DECR_REF(inp); 2875 } 2876 if (tmr->tcb != NULL) { 2877 tmr->tcb = NULL; 2878 atomic_subtract_int(&stcb->asoc.refcnt, 1); 2879 } 2880 if (tmr->net != NULL) { 2881 struct sctp_nets *tmr_net; 2882 2883 /* 2884 * Can't use net, since it doesn't work for 2885 * SCTP_TIMER_TYPE_ASCONF. 2886 */ 2887 tmr_net = tmr->net; 2888 tmr->net = NULL; 2889 sctp_free_remote_addr(tmr_net); 2890 } 2891 } else { 2892 SCTPDBG(SCTP_DEBUG_TIMER2, 2893 "Timer type %d not stopped: inp=%p, stcb=%p, net=%p.\n", 2894 t_type, inp, stcb, net); 2895 } 2896 return; 2897 } 2898 2899 uint32_t 2900 sctp_calculate_len(struct mbuf *m) 2901 { 2902 struct mbuf *at; 2903 uint32_t tlen; 2904 2905 tlen = 0; 2906 for (at = m; at != NULL; at = SCTP_BUF_NEXT(at)) { 2907 tlen += SCTP_BUF_LEN(at); 2908 } 2909 return (tlen); 2910 } 2911 2912 /* 2913 * Given an association and starting time of the current RTT period, update 2914 * RTO in number of msecs. net should point to the current network. 2915 * Return 1, if an RTO update was performed, return 0 if no update was 2916 * performed due to invalid starting point. 2917 */ 2918 2919 int 2920 sctp_calculate_rto(struct sctp_tcb *stcb, 2921 struct sctp_association *asoc, 2922 struct sctp_nets *net, 2923 struct timeval *old, 2924 int rtt_from_sack) 2925 { 2926 struct timeval now; 2927 uint64_t rtt_us; /* RTT in us */ 2928 int32_t rtt; /* RTT in ms */ 2929 uint32_t new_rto; 2930 int first_measure = 0; 2931 2932 /************************/ 2933 /* 1. calculate new RTT */ 2934 /************************/ 2935 /* get the current time */ 2936 if (stcb->asoc.use_precise_time) { 2937 (void)SCTP_GETPTIME_TIMEVAL(&now); 2938 } else { 2939 (void)SCTP_GETTIME_TIMEVAL(&now); 2940 } 2941 if ((old->tv_sec > now.tv_sec) || 2942 ((old->tv_sec == now.tv_sec) && (old->tv_usec > now.tv_usec))) { 2943 /* The starting point is in the future. */ 2944 return (0); 2945 } 2946 timevalsub(&now, old); 2947 rtt_us = (uint64_t)1000000 * (uint64_t)now.tv_sec + (uint64_t)now.tv_usec; 2948 if (rtt_us > SCTP_RTO_UPPER_BOUND * 1000) { 2949 /* The RTT is larger than a sane value. */ 2950 return (0); 2951 } 2952 /* store the current RTT in us */ 2953 net->rtt = rtt_us; 2954 /* compute rtt in ms */ 2955 rtt = (int32_t)(net->rtt / 1000); 2956 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) { 2957 /* 2958 * Tell the CC module that a new update has just occurred 2959 * from a sack 2960 */ 2961 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now); 2962 } 2963 /* 2964 * Do we need to determine the lan? We do this only on sacks i.e. 2965 * RTT being determined from data not non-data (HB/INIT->INITACK). 2966 */ 2967 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) && 2968 (net->lan_type == SCTP_LAN_UNKNOWN)) { 2969 if (net->rtt > SCTP_LOCAL_LAN_RTT) { 2970 net->lan_type = SCTP_LAN_INTERNET; 2971 } else { 2972 net->lan_type = SCTP_LAN_LOCAL; 2973 } 2974 } 2975 2976 /***************************/ 2977 /* 2. update RTTVAR & SRTT */ 2978 /***************************/ 2979 /*- 2980 * Compute the scaled average lastsa and the 2981 * scaled variance lastsv as described in van Jacobson 2982 * Paper "Congestion Avoidance and Control", Annex A. 2983 * 2984 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt 2985 * (net->lastsv >> SCTP_RTT_VAR_SHIFT) is the rttvar 2986 */ 2987 if (net->RTO_measured) { 2988 rtt -= (net->lastsa >> SCTP_RTT_SHIFT); 2989 net->lastsa += rtt; 2990 if (rtt < 0) { 2991 rtt = -rtt; 2992 } 2993 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT); 2994 net->lastsv += rtt; 2995 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { 2996 rto_logging(net, SCTP_LOG_RTTVAR); 2997 } 2998 } else { 2999 /* First RTO measurement */ 3000 net->RTO_measured = 1; 3001 first_measure = 1; 3002 net->lastsa = rtt << SCTP_RTT_SHIFT; 3003 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT; 3004 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { 3005 rto_logging(net, SCTP_LOG_INITIAL_RTT); 3006 } 3007 } 3008 if (net->lastsv == 0) { 3009 net->lastsv = SCTP_CLOCK_GRANULARITY; 3010 } 3011 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv; 3012 if ((new_rto > SCTP_SAT_NETWORK_MIN) && 3013 (stcb->asoc.sat_network_lockout == 0)) { 3014 stcb->asoc.sat_network = 1; 3015 } else if ((!first_measure) && stcb->asoc.sat_network) { 3016 stcb->asoc.sat_network = 0; 3017 stcb->asoc.sat_network_lockout = 1; 3018 } 3019 /* bound it, per C6/C7 in Section 5.3.1 */ 3020 if (new_rto < stcb->asoc.minrto) { 3021 new_rto = stcb->asoc.minrto; 3022 } 3023 if (new_rto > stcb->asoc.maxrto) { 3024 new_rto = stcb->asoc.maxrto; 3025 } 3026 net->RTO = new_rto; 3027 return (1); 3028 } 3029 3030 /* 3031 * return a pointer to a contiguous piece of data from the given mbuf chain 3032 * starting at 'off' for 'len' bytes. If the desired piece spans more than 3033 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size 3034 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain. 3035 */ 3036 caddr_t 3037 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr) 3038 { 3039 uint32_t count; 3040 uint8_t *ptr; 3041 3042 ptr = in_ptr; 3043 if ((off < 0) || (len <= 0)) 3044 return (NULL); 3045 3046 /* find the desired start location */ 3047 while ((m != NULL) && (off > 0)) { 3048 if (off < SCTP_BUF_LEN(m)) 3049 break; 3050 off -= SCTP_BUF_LEN(m); 3051 m = SCTP_BUF_NEXT(m); 3052 } 3053 if (m == NULL) 3054 return (NULL); 3055 3056 /* is the current mbuf large enough (eg. contiguous)? */ 3057 if ((SCTP_BUF_LEN(m) - off) >= len) { 3058 return (mtod(m, caddr_t)+off); 3059 } else { 3060 /* else, it spans more than one mbuf, so save a temp copy... */ 3061 while ((m != NULL) && (len > 0)) { 3062 count = min(SCTP_BUF_LEN(m) - off, len); 3063 memcpy(ptr, mtod(m, caddr_t)+off, count); 3064 len -= count; 3065 ptr += count; 3066 off = 0; 3067 m = SCTP_BUF_NEXT(m); 3068 } 3069 if ((m == NULL) && (len > 0)) 3070 return (NULL); 3071 else 3072 return ((caddr_t)in_ptr); 3073 } 3074 } 3075 3076 struct sctp_paramhdr * 3077 sctp_get_next_param(struct mbuf *m, 3078 int offset, 3079 struct sctp_paramhdr *pull, 3080 int pull_limit) 3081 { 3082 /* This just provides a typed signature to Peter's Pull routine */ 3083 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit, 3084 (uint8_t *)pull)); 3085 } 3086 3087 struct mbuf * 3088 sctp_add_pad_tombuf(struct mbuf *m, int padlen) 3089 { 3090 struct mbuf *m_last; 3091 caddr_t dp; 3092 3093 if (padlen > 3) { 3094 return (NULL); 3095 } 3096 if (padlen <= M_TRAILINGSPACE(m)) { 3097 /* 3098 * The easy way. We hope the majority of the time we hit 3099 * here :) 3100 */ 3101 m_last = m; 3102 } else { 3103 /* Hard way we must grow the mbuf chain */ 3104 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA); 3105 if (m_last == NULL) { 3106 return (NULL); 3107 } 3108 SCTP_BUF_LEN(m_last) = 0; 3109 SCTP_BUF_NEXT(m_last) = NULL; 3110 SCTP_BUF_NEXT(m) = m_last; 3111 } 3112 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last); 3113 SCTP_BUF_LEN(m_last) += padlen; 3114 memset(dp, 0, padlen); 3115 return (m_last); 3116 } 3117 3118 struct mbuf * 3119 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf) 3120 { 3121 /* find the last mbuf in chain and pad it */ 3122 struct mbuf *m_at; 3123 3124 if (last_mbuf != NULL) { 3125 return (sctp_add_pad_tombuf(last_mbuf, padval)); 3126 } else { 3127 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) { 3128 if (SCTP_BUF_NEXT(m_at) == NULL) { 3129 return (sctp_add_pad_tombuf(m_at, padval)); 3130 } 3131 } 3132 } 3133 return (NULL); 3134 } 3135 3136 static void 3137 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb, 3138 uint16_t error, struct sctp_abort_chunk *abort, 3139 bool from_peer, bool timedout, int so_locked) 3140 { 3141 struct mbuf *m_notify; 3142 struct sctp_assoc_change *sac; 3143 struct sctp_queued_to_read *control; 3144 unsigned int notif_len; 3145 uint16_t abort_len; 3146 unsigned int i; 3147 3148 KASSERT(abort == NULL || from_peer, 3149 ("sctp_notify_assoc_change: ABORT chunk provided for local termination")); 3150 KASSERT(!from_peer || !timedout, 3151 ("sctp_notify_assoc_change: timeouts can only be local")); 3152 if (stcb == NULL) { 3153 return; 3154 } 3155 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) { 3156 notif_len = (unsigned int)sizeof(struct sctp_assoc_change); 3157 if (abort != NULL) { 3158 abort_len = ntohs(abort->ch.chunk_length); 3159 /* 3160 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be 3161 * contiguous. 3162 */ 3163 if (abort_len > SCTP_CHUNK_BUFFER_SIZE) { 3164 abort_len = SCTP_CHUNK_BUFFER_SIZE; 3165 } 3166 } else { 3167 abort_len = 0; 3168 } 3169 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { 3170 notif_len += SCTP_ASSOC_SUPPORTS_MAX; 3171 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { 3172 notif_len += abort_len; 3173 } 3174 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 3175 if (m_notify == NULL) { 3176 /* Retry with smaller value. */ 3177 notif_len = (unsigned int)sizeof(struct sctp_assoc_change); 3178 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 3179 if (m_notify == NULL) { 3180 goto set_error; 3181 } 3182 } 3183 SCTP_BUF_NEXT(m_notify) = NULL; 3184 sac = mtod(m_notify, struct sctp_assoc_change *); 3185 memset(sac, 0, notif_len); 3186 sac->sac_type = SCTP_ASSOC_CHANGE; 3187 sac->sac_flags = 0; 3188 sac->sac_length = sizeof(struct sctp_assoc_change); 3189 sac->sac_state = state; 3190 sac->sac_error = error; 3191 if (state == SCTP_CANT_STR_ASSOC) { 3192 sac->sac_outbound_streams = 0; 3193 sac->sac_inbound_streams = 0; 3194 } else { 3195 sac->sac_outbound_streams = stcb->asoc.streamoutcnt; 3196 sac->sac_inbound_streams = stcb->asoc.streamincnt; 3197 } 3198 sac->sac_assoc_id = sctp_get_associd(stcb); 3199 if (notif_len > sizeof(struct sctp_assoc_change)) { 3200 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { 3201 i = 0; 3202 if (stcb->asoc.prsctp_supported == 1) { 3203 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR; 3204 } 3205 if (stcb->asoc.auth_supported == 1) { 3206 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH; 3207 } 3208 if (stcb->asoc.asconf_supported == 1) { 3209 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF; 3210 } 3211 if (stcb->asoc.idata_supported == 1) { 3212 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING; 3213 } 3214 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF; 3215 if (stcb->asoc.reconfig_supported == 1) { 3216 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG; 3217 } 3218 sac->sac_length += i; 3219 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { 3220 memcpy(sac->sac_info, abort, abort_len); 3221 sac->sac_length += abort_len; 3222 } 3223 } 3224 SCTP_BUF_LEN(m_notify) = sac->sac_length; 3225 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3226 0, 0, stcb->asoc.context, 0, 0, 0, 3227 m_notify); 3228 if (control != NULL) { 3229 control->length = SCTP_BUF_LEN(m_notify); 3230 control->spec_flags = M_NOTIFICATION; 3231 /* not that we need this */ 3232 control->tail_mbuf = m_notify; 3233 sctp_add_to_readq(stcb->sctp_ep, stcb, 3234 control, 3235 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, 3236 so_locked); 3237 } else { 3238 sctp_m_freem(m_notify); 3239 } 3240 } 3241 /* 3242 * For 1-to-1 style sockets, we send up and error when an ABORT 3243 * comes in. 3244 */ 3245 set_error: 3246 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3247 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 3248 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { 3249 SOCK_LOCK(stcb->sctp_socket); 3250 if (from_peer) { 3251 if (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) { 3252 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED); 3253 stcb->sctp_socket->so_error = ECONNREFUSED; 3254 } else { 3255 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 3256 stcb->sctp_socket->so_error = ECONNRESET; 3257 } 3258 } else { 3259 if (timedout) { 3260 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT); 3261 stcb->sctp_socket->so_error = ETIMEDOUT; 3262 } else { 3263 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED); 3264 stcb->sctp_socket->so_error = ECONNABORTED; 3265 } 3266 } 3267 SOCK_UNLOCK(stcb->sctp_socket); 3268 } 3269 /* Wake ANY sleepers */ 3270 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3271 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 3272 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { 3273 socantrcvmore(stcb->sctp_socket); 3274 } 3275 sorwakeup(stcb->sctp_socket); 3276 sowwakeup(stcb->sctp_socket); 3277 } 3278 3279 static void 3280 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state, 3281 struct sockaddr *sa, uint32_t error, int so_locked) 3282 { 3283 struct mbuf *m_notify; 3284 struct sctp_paddr_change *spc; 3285 struct sctp_queued_to_read *control; 3286 3287 if ((stcb == NULL) || 3288 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) { 3289 /* event not enabled */ 3290 return; 3291 } 3292 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA); 3293 if (m_notify == NULL) 3294 return; 3295 SCTP_BUF_LEN(m_notify) = 0; 3296 spc = mtod(m_notify, struct sctp_paddr_change *); 3297 memset(spc, 0, sizeof(struct sctp_paddr_change)); 3298 spc->spc_type = SCTP_PEER_ADDR_CHANGE; 3299 spc->spc_flags = 0; 3300 spc->spc_length = sizeof(struct sctp_paddr_change); 3301 switch (sa->sa_family) { 3302 #ifdef INET 3303 case AF_INET: 3304 #ifdef INET6 3305 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { 3306 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa, 3307 (struct sockaddr_in6 *)&spc->spc_aaddr); 3308 } else { 3309 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); 3310 } 3311 #else 3312 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); 3313 #endif 3314 break; 3315 #endif 3316 #ifdef INET6 3317 case AF_INET6: 3318 { 3319 struct sockaddr_in6 *sin6; 3320 3321 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6)); 3322 3323 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr; 3324 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) { 3325 if (sin6->sin6_scope_id == 0) { 3326 /* recover scope_id for user */ 3327 (void)sa6_recoverscope(sin6); 3328 } else { 3329 /* clear embedded scope_id for user */ 3330 in6_clearscope(&sin6->sin6_addr); 3331 } 3332 } 3333 break; 3334 } 3335 #endif 3336 default: 3337 /* TSNH */ 3338 break; 3339 } 3340 spc->spc_state = state; 3341 spc->spc_error = error; 3342 spc->spc_assoc_id = sctp_get_associd(stcb); 3343 3344 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change); 3345 SCTP_BUF_NEXT(m_notify) = NULL; 3346 3347 /* append to socket */ 3348 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3349 0, 0, stcb->asoc.context, 0, 0, 0, 3350 m_notify); 3351 if (control == NULL) { 3352 /* no memory */ 3353 sctp_m_freem(m_notify); 3354 return; 3355 } 3356 control->length = SCTP_BUF_LEN(m_notify); 3357 control->spec_flags = M_NOTIFICATION; 3358 /* not that we need this */ 3359 control->tail_mbuf = m_notify; 3360 sctp_add_to_readq(stcb->sctp_ep, stcb, 3361 control, 3362 &stcb->sctp_socket->so_rcv, 1, 3363 SCTP_READ_LOCK_NOT_HELD, 3364 so_locked); 3365 } 3366 3367 static void 3368 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error, 3369 struct sctp_tmit_chunk *chk, int so_locked) 3370 { 3371 struct mbuf *m_notify; 3372 struct sctp_send_failed *ssf; 3373 struct sctp_send_failed_event *ssfe; 3374 struct sctp_queued_to_read *control; 3375 struct sctp_chunkhdr *chkhdr; 3376 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len; 3377 3378 if ((stcb == NULL) || 3379 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && 3380 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { 3381 /* event not enabled */ 3382 return; 3383 } 3384 3385 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3386 notifhdr_len = sizeof(struct sctp_send_failed_event); 3387 } else { 3388 notifhdr_len = sizeof(struct sctp_send_failed); 3389 } 3390 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA); 3391 if (m_notify == NULL) 3392 /* no space left */ 3393 return; 3394 SCTP_BUF_LEN(m_notify) = notifhdr_len; 3395 if (stcb->asoc.idata_supported) { 3396 chkhdr_len = sizeof(struct sctp_idata_chunk); 3397 } else { 3398 chkhdr_len = sizeof(struct sctp_data_chunk); 3399 } 3400 /* Use some defaults in case we can't access the chunk header */ 3401 if (chk->send_size >= chkhdr_len) { 3402 payload_len = chk->send_size - chkhdr_len; 3403 } else { 3404 payload_len = 0; 3405 } 3406 padding_len = 0; 3407 if (chk->data != NULL) { 3408 chkhdr = mtod(chk->data, struct sctp_chunkhdr *); 3409 if (chkhdr != NULL) { 3410 chk_len = ntohs(chkhdr->chunk_length); 3411 if ((chk_len >= chkhdr_len) && 3412 (chk->send_size >= chk_len) && 3413 (chk->send_size - chk_len < 4)) { 3414 padding_len = chk->send_size - chk_len; 3415 payload_len = chk->send_size - chkhdr_len - padding_len; 3416 } 3417 } 3418 } 3419 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3420 ssfe = mtod(m_notify, struct sctp_send_failed_event *); 3421 memset(ssfe, 0, notifhdr_len); 3422 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; 3423 if (sent) { 3424 ssfe->ssfe_flags = SCTP_DATA_SENT; 3425 } else { 3426 ssfe->ssfe_flags = SCTP_DATA_UNSENT; 3427 } 3428 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len); 3429 ssfe->ssfe_error = error; 3430 /* not exactly what the user sent in, but should be close :) */ 3431 ssfe->ssfe_info.snd_sid = chk->rec.data.sid; 3432 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags; 3433 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid; 3434 ssfe->ssfe_info.snd_context = chk->rec.data.context; 3435 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); 3436 ssfe->ssfe_assoc_id = sctp_get_associd(stcb); 3437 } else { 3438 ssf = mtod(m_notify, struct sctp_send_failed *); 3439 memset(ssf, 0, notifhdr_len); 3440 ssf->ssf_type = SCTP_SEND_FAILED; 3441 if (sent) { 3442 ssf->ssf_flags = SCTP_DATA_SENT; 3443 } else { 3444 ssf->ssf_flags = SCTP_DATA_UNSENT; 3445 } 3446 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len); 3447 ssf->ssf_error = error; 3448 /* not exactly what the user sent in, but should be close :) */ 3449 ssf->ssf_info.sinfo_stream = chk->rec.data.sid; 3450 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid; 3451 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags; 3452 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid; 3453 ssf->ssf_info.sinfo_context = chk->rec.data.context; 3454 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 3455 ssf->ssf_assoc_id = sctp_get_associd(stcb); 3456 } 3457 if (chk->data != NULL) { 3458 /* Trim off the sctp chunk header (it should be there) */ 3459 if (chk->send_size == chkhdr_len + payload_len + padding_len) { 3460 m_adj(chk->data, chkhdr_len); 3461 m_adj(chk->data, -padding_len); 3462 sctp_mbuf_crush(chk->data); 3463 chk->send_size -= (chkhdr_len + padding_len); 3464 } 3465 } 3466 SCTP_BUF_NEXT(m_notify) = chk->data; 3467 /* Steal off the mbuf */ 3468 chk->data = NULL; 3469 /* 3470 * For this case, we check the actual socket buffer, since the assoc 3471 * is going away we don't want to overfill the socket buffer for a 3472 * non-reader 3473 */ 3474 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3475 sctp_m_freem(m_notify); 3476 return; 3477 } 3478 /* append to socket */ 3479 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3480 0, 0, stcb->asoc.context, 0, 0, 0, 3481 m_notify); 3482 if (control == NULL) { 3483 /* no memory */ 3484 sctp_m_freem(m_notify); 3485 return; 3486 } 3487 control->length = SCTP_BUF_LEN(m_notify); 3488 control->spec_flags = M_NOTIFICATION; 3489 /* not that we need this */ 3490 control->tail_mbuf = m_notify; 3491 sctp_add_to_readq(stcb->sctp_ep, stcb, 3492 control, 3493 &stcb->sctp_socket->so_rcv, 1, 3494 SCTP_READ_LOCK_NOT_HELD, 3495 so_locked); 3496 } 3497 3498 static void 3499 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error, 3500 struct sctp_stream_queue_pending *sp, int so_locked) 3501 { 3502 struct mbuf *m_notify; 3503 struct sctp_send_failed *ssf; 3504 struct sctp_send_failed_event *ssfe; 3505 struct sctp_queued_to_read *control; 3506 int notifhdr_len; 3507 3508 if ((stcb == NULL) || 3509 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && 3510 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { 3511 /* event not enabled */ 3512 return; 3513 } 3514 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3515 notifhdr_len = sizeof(struct sctp_send_failed_event); 3516 } else { 3517 notifhdr_len = sizeof(struct sctp_send_failed); 3518 } 3519 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA); 3520 if (m_notify == NULL) { 3521 /* no space left */ 3522 return; 3523 } 3524 SCTP_BUF_LEN(m_notify) = notifhdr_len; 3525 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3526 ssfe = mtod(m_notify, struct sctp_send_failed_event *); 3527 memset(ssfe, 0, notifhdr_len); 3528 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; 3529 ssfe->ssfe_flags = SCTP_DATA_UNSENT; 3530 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length); 3531 ssfe->ssfe_error = error; 3532 /* not exactly what the user sent in, but should be close :) */ 3533 ssfe->ssfe_info.snd_sid = sp->sid; 3534 if (sp->some_taken) { 3535 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG; 3536 } else { 3537 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG; 3538 } 3539 ssfe->ssfe_info.snd_ppid = sp->ppid; 3540 ssfe->ssfe_info.snd_context = sp->context; 3541 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); 3542 ssfe->ssfe_assoc_id = sctp_get_associd(stcb); 3543 } else { 3544 ssf = mtod(m_notify, struct sctp_send_failed *); 3545 memset(ssf, 0, notifhdr_len); 3546 ssf->ssf_type = SCTP_SEND_FAILED; 3547 ssf->ssf_flags = SCTP_DATA_UNSENT; 3548 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length); 3549 ssf->ssf_error = error; 3550 /* not exactly what the user sent in, but should be close :) */ 3551 ssf->ssf_info.sinfo_stream = sp->sid; 3552 ssf->ssf_info.sinfo_ssn = 0; 3553 if (sp->some_taken) { 3554 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG; 3555 } else { 3556 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG; 3557 } 3558 ssf->ssf_info.sinfo_ppid = sp->ppid; 3559 ssf->ssf_info.sinfo_context = sp->context; 3560 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 3561 ssf->ssf_assoc_id = sctp_get_associd(stcb); 3562 } 3563 SCTP_BUF_NEXT(m_notify) = sp->data; 3564 3565 /* Steal off the mbuf */ 3566 sp->data = NULL; 3567 /* 3568 * For this case, we check the actual socket buffer, since the assoc 3569 * is going away we don't want to overfill the socket buffer for a 3570 * non-reader 3571 */ 3572 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3573 sctp_m_freem(m_notify); 3574 return; 3575 } 3576 /* append to socket */ 3577 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3578 0, 0, stcb->asoc.context, 0, 0, 0, 3579 m_notify); 3580 if (control == NULL) { 3581 /* no memory */ 3582 sctp_m_freem(m_notify); 3583 return; 3584 } 3585 control->length = SCTP_BUF_LEN(m_notify); 3586 control->spec_flags = M_NOTIFICATION; 3587 /* not that we need this */ 3588 control->tail_mbuf = m_notify; 3589 sctp_add_to_readq(stcb->sctp_ep, stcb, 3590 control, 3591 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); 3592 } 3593 3594 static void 3595 sctp_notify_adaptation_layer(struct sctp_tcb *stcb) 3596 { 3597 struct mbuf *m_notify; 3598 struct sctp_adaptation_event *sai; 3599 struct sctp_queued_to_read *control; 3600 3601 if ((stcb == NULL) || 3602 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) { 3603 /* event not enabled */ 3604 return; 3605 } 3606 3607 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA); 3608 if (m_notify == NULL) 3609 /* no space left */ 3610 return; 3611 SCTP_BUF_LEN(m_notify) = 0; 3612 sai = mtod(m_notify, struct sctp_adaptation_event *); 3613 memset(sai, 0, sizeof(struct sctp_adaptation_event)); 3614 sai->sai_type = SCTP_ADAPTATION_INDICATION; 3615 sai->sai_flags = 0; 3616 sai->sai_length = sizeof(struct sctp_adaptation_event); 3617 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation; 3618 sai->sai_assoc_id = sctp_get_associd(stcb); 3619 3620 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event); 3621 SCTP_BUF_NEXT(m_notify) = NULL; 3622 3623 /* append to socket */ 3624 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3625 0, 0, stcb->asoc.context, 0, 0, 0, 3626 m_notify); 3627 if (control == NULL) { 3628 /* no memory */ 3629 sctp_m_freem(m_notify); 3630 return; 3631 } 3632 control->length = SCTP_BUF_LEN(m_notify); 3633 control->spec_flags = M_NOTIFICATION; 3634 /* not that we need this */ 3635 control->tail_mbuf = m_notify; 3636 sctp_add_to_readq(stcb->sctp_ep, stcb, 3637 control, 3638 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3639 } 3640 3641 /* This always must be called with the read-queue LOCKED in the INP */ 3642 static void 3643 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error, 3644 uint32_t val, int so_locked) 3645 { 3646 struct mbuf *m_notify; 3647 struct sctp_pdapi_event *pdapi; 3648 struct sctp_queued_to_read *control; 3649 struct sockbuf *sb; 3650 3651 if ((stcb == NULL) || 3652 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) { 3653 /* event not enabled */ 3654 return; 3655 } 3656 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { 3657 return; 3658 } 3659 3660 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA); 3661 if (m_notify == NULL) 3662 /* no space left */ 3663 return; 3664 SCTP_BUF_LEN(m_notify) = 0; 3665 pdapi = mtod(m_notify, struct sctp_pdapi_event *); 3666 memset(pdapi, 0, sizeof(struct sctp_pdapi_event)); 3667 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT; 3668 pdapi->pdapi_flags = 0; 3669 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event); 3670 pdapi->pdapi_indication = error; 3671 pdapi->pdapi_stream = (val >> 16); 3672 pdapi->pdapi_seq = (val & 0x0000ffff); 3673 pdapi->pdapi_assoc_id = sctp_get_associd(stcb); 3674 3675 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event); 3676 SCTP_BUF_NEXT(m_notify) = NULL; 3677 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3678 0, 0, stcb->asoc.context, 0, 0, 0, 3679 m_notify); 3680 if (control == NULL) { 3681 /* no memory */ 3682 sctp_m_freem(m_notify); 3683 return; 3684 } 3685 control->length = SCTP_BUF_LEN(m_notify); 3686 control->spec_flags = M_NOTIFICATION; 3687 /* not that we need this */ 3688 control->tail_mbuf = m_notify; 3689 sb = &stcb->sctp_socket->so_rcv; 3690 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 3691 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify)); 3692 } 3693 sctp_sballoc(stcb, sb, m_notify); 3694 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 3695 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 3696 } 3697 control->end_added = 1; 3698 if (stcb->asoc.control_pdapi) 3699 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next); 3700 else { 3701 /* we really should not see this case */ 3702 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next); 3703 } 3704 if (stcb->sctp_ep && stcb->sctp_socket) { 3705 /* This should always be the case */ 3706 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); 3707 } 3708 } 3709 3710 static void 3711 sctp_notify_shutdown_event(struct sctp_tcb *stcb) 3712 { 3713 struct mbuf *m_notify; 3714 struct sctp_shutdown_event *sse; 3715 struct sctp_queued_to_read *control; 3716 3717 /* 3718 * For TCP model AND UDP connected sockets we will send an error up 3719 * when an SHUTDOWN completes 3720 */ 3721 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3722 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 3723 /* mark socket closed for read/write and wakeup! */ 3724 socantsendmore(stcb->sctp_socket); 3725 } 3726 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) { 3727 /* event not enabled */ 3728 return; 3729 } 3730 3731 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA); 3732 if (m_notify == NULL) 3733 /* no space left */ 3734 return; 3735 sse = mtod(m_notify, struct sctp_shutdown_event *); 3736 memset(sse, 0, sizeof(struct sctp_shutdown_event)); 3737 sse->sse_type = SCTP_SHUTDOWN_EVENT; 3738 sse->sse_flags = 0; 3739 sse->sse_length = sizeof(struct sctp_shutdown_event); 3740 sse->sse_assoc_id = sctp_get_associd(stcb); 3741 3742 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event); 3743 SCTP_BUF_NEXT(m_notify) = NULL; 3744 3745 /* append to socket */ 3746 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3747 0, 0, stcb->asoc.context, 0, 0, 0, 3748 m_notify); 3749 if (control == NULL) { 3750 /* no memory */ 3751 sctp_m_freem(m_notify); 3752 return; 3753 } 3754 control->length = SCTP_BUF_LEN(m_notify); 3755 control->spec_flags = M_NOTIFICATION; 3756 /* not that we need this */ 3757 control->tail_mbuf = m_notify; 3758 sctp_add_to_readq(stcb->sctp_ep, stcb, 3759 control, 3760 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3761 } 3762 3763 static void 3764 sctp_notify_sender_dry_event(struct sctp_tcb *stcb, 3765 int so_locked) 3766 { 3767 struct mbuf *m_notify; 3768 struct sctp_sender_dry_event *event; 3769 struct sctp_queued_to_read *control; 3770 3771 if ((stcb == NULL) || 3772 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) { 3773 /* event not enabled */ 3774 return; 3775 } 3776 3777 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA); 3778 if (m_notify == NULL) { 3779 /* no space left */ 3780 return; 3781 } 3782 SCTP_BUF_LEN(m_notify) = 0; 3783 event = mtod(m_notify, struct sctp_sender_dry_event *); 3784 memset(event, 0, sizeof(struct sctp_sender_dry_event)); 3785 event->sender_dry_type = SCTP_SENDER_DRY_EVENT; 3786 event->sender_dry_flags = 0; 3787 event->sender_dry_length = sizeof(struct sctp_sender_dry_event); 3788 event->sender_dry_assoc_id = sctp_get_associd(stcb); 3789 3790 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event); 3791 SCTP_BUF_NEXT(m_notify) = NULL; 3792 3793 /* append to socket */ 3794 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3795 0, 0, stcb->asoc.context, 0, 0, 0, 3796 m_notify); 3797 if (control == NULL) { 3798 /* no memory */ 3799 sctp_m_freem(m_notify); 3800 return; 3801 } 3802 control->length = SCTP_BUF_LEN(m_notify); 3803 control->spec_flags = M_NOTIFICATION; 3804 /* not that we need this */ 3805 control->tail_mbuf = m_notify; 3806 sctp_add_to_readq(stcb->sctp_ep, stcb, control, 3807 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); 3808 } 3809 3810 void 3811 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag) 3812 { 3813 struct mbuf *m_notify; 3814 struct sctp_queued_to_read *control; 3815 struct sctp_stream_change_event *stradd; 3816 3817 if ((stcb == NULL) || 3818 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3819 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3820 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 3821 /* If the socket is gone we are out of here. */ 3822 return; 3823 } 3824 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT)) { 3825 /* event not enabled */ 3826 return; 3827 } 3828 3829 if ((stcb->asoc.peer_req_out) && flag) { 3830 /* Peer made the request, don't tell the local user */ 3831 stcb->asoc.peer_req_out = 0; 3832 return; 3833 } 3834 stcb->asoc.peer_req_out = 0; 3835 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA); 3836 if (m_notify == NULL) 3837 /* no space left */ 3838 return; 3839 SCTP_BUF_LEN(m_notify) = 0; 3840 stradd = mtod(m_notify, struct sctp_stream_change_event *); 3841 memset(stradd, 0, sizeof(struct sctp_stream_change_event)); 3842 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT; 3843 stradd->strchange_flags = flag; 3844 stradd->strchange_length = sizeof(struct sctp_stream_change_event); 3845 stradd->strchange_assoc_id = sctp_get_associd(stcb); 3846 stradd->strchange_instrms = numberin; 3847 stradd->strchange_outstrms = numberout; 3848 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event); 3849 SCTP_BUF_NEXT(m_notify) = NULL; 3850 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3851 /* no space */ 3852 sctp_m_freem(m_notify); 3853 return; 3854 } 3855 /* append to socket */ 3856 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3857 0, 0, stcb->asoc.context, 0, 0, 0, 3858 m_notify); 3859 if (control == NULL) { 3860 /* no memory */ 3861 sctp_m_freem(m_notify); 3862 return; 3863 } 3864 control->length = SCTP_BUF_LEN(m_notify); 3865 control->spec_flags = M_NOTIFICATION; 3866 /* not that we need this */ 3867 control->tail_mbuf = m_notify; 3868 sctp_add_to_readq(stcb->sctp_ep, stcb, 3869 control, 3870 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3871 } 3872 3873 void 3874 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag) 3875 { 3876 struct mbuf *m_notify; 3877 struct sctp_queued_to_read *control; 3878 struct sctp_assoc_reset_event *strasoc; 3879 3880 if ((stcb == NULL) || 3881 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3882 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3883 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 3884 /* If the socket is gone we are out of here. */ 3885 return; 3886 } 3887 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT)) { 3888 /* event not enabled */ 3889 return; 3890 } 3891 3892 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA); 3893 if (m_notify == NULL) 3894 /* no space left */ 3895 return; 3896 SCTP_BUF_LEN(m_notify) = 0; 3897 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *); 3898 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event)); 3899 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT; 3900 strasoc->assocreset_flags = flag; 3901 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event); 3902 strasoc->assocreset_assoc_id = sctp_get_associd(stcb); 3903 strasoc->assocreset_local_tsn = sending_tsn; 3904 strasoc->assocreset_remote_tsn = recv_tsn; 3905 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event); 3906 SCTP_BUF_NEXT(m_notify) = NULL; 3907 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3908 /* no space */ 3909 sctp_m_freem(m_notify); 3910 return; 3911 } 3912 /* append to socket */ 3913 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3914 0, 0, stcb->asoc.context, 0, 0, 0, 3915 m_notify); 3916 if (control == NULL) { 3917 /* no memory */ 3918 sctp_m_freem(m_notify); 3919 return; 3920 } 3921 control->length = SCTP_BUF_LEN(m_notify); 3922 control->spec_flags = M_NOTIFICATION; 3923 /* not that we need this */ 3924 control->tail_mbuf = m_notify; 3925 sctp_add_to_readq(stcb->sctp_ep, stcb, 3926 control, 3927 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3928 } 3929 3930 static void 3931 sctp_notify_stream_reset(struct sctp_tcb *stcb, 3932 int number_entries, uint16_t *list, int flag) 3933 { 3934 struct mbuf *m_notify; 3935 struct sctp_queued_to_read *control; 3936 struct sctp_stream_reset_event *strreset; 3937 int len; 3938 3939 if ((stcb == NULL) || 3940 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) { 3941 /* event not enabled */ 3942 return; 3943 } 3944 3945 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); 3946 if (m_notify == NULL) 3947 /* no space left */ 3948 return; 3949 SCTP_BUF_LEN(m_notify) = 0; 3950 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t)); 3951 if (len > M_TRAILINGSPACE(m_notify)) { 3952 /* never enough room */ 3953 sctp_m_freem(m_notify); 3954 return; 3955 } 3956 strreset = mtod(m_notify, struct sctp_stream_reset_event *); 3957 memset(strreset, 0, len); 3958 strreset->strreset_type = SCTP_STREAM_RESET_EVENT; 3959 strreset->strreset_flags = flag; 3960 strreset->strreset_length = len; 3961 strreset->strreset_assoc_id = sctp_get_associd(stcb); 3962 if (number_entries) { 3963 int i; 3964 3965 for (i = 0; i < number_entries; i++) { 3966 strreset->strreset_stream_list[i] = ntohs(list[i]); 3967 } 3968 } 3969 SCTP_BUF_LEN(m_notify) = len; 3970 SCTP_BUF_NEXT(m_notify) = NULL; 3971 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3972 /* no space */ 3973 sctp_m_freem(m_notify); 3974 return; 3975 } 3976 /* append to socket */ 3977 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3978 0, 0, stcb->asoc.context, 0, 0, 0, 3979 m_notify); 3980 if (control == NULL) { 3981 /* no memory */ 3982 sctp_m_freem(m_notify); 3983 return; 3984 } 3985 control->length = SCTP_BUF_LEN(m_notify); 3986 control->spec_flags = M_NOTIFICATION; 3987 /* not that we need this */ 3988 control->tail_mbuf = m_notify; 3989 sctp_add_to_readq(stcb->sctp_ep, stcb, 3990 control, 3991 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3992 } 3993 3994 static void 3995 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk) 3996 { 3997 struct mbuf *m_notify; 3998 struct sctp_remote_error *sre; 3999 struct sctp_queued_to_read *control; 4000 unsigned int notif_len; 4001 uint16_t chunk_len; 4002 4003 if ((stcb == NULL) || 4004 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) { 4005 return; 4006 } 4007 if (chunk != NULL) { 4008 chunk_len = ntohs(chunk->ch.chunk_length); 4009 /* 4010 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be 4011 * contiguous. 4012 */ 4013 if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) { 4014 chunk_len = SCTP_CHUNK_BUFFER_SIZE; 4015 } 4016 } else { 4017 chunk_len = 0; 4018 } 4019 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len); 4020 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 4021 if (m_notify == NULL) { 4022 /* Retry with smaller value. */ 4023 notif_len = (unsigned int)sizeof(struct sctp_remote_error); 4024 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 4025 if (m_notify == NULL) { 4026 return; 4027 } 4028 } 4029 SCTP_BUF_NEXT(m_notify) = NULL; 4030 sre = mtod(m_notify, struct sctp_remote_error *); 4031 memset(sre, 0, notif_len); 4032 sre->sre_type = SCTP_REMOTE_ERROR; 4033 sre->sre_flags = 0; 4034 sre->sre_length = sizeof(struct sctp_remote_error); 4035 sre->sre_error = error; 4036 sre->sre_assoc_id = sctp_get_associd(stcb); 4037 if (notif_len > sizeof(struct sctp_remote_error)) { 4038 memcpy(sre->sre_data, chunk, chunk_len); 4039 sre->sre_length += chunk_len; 4040 } 4041 SCTP_BUF_LEN(m_notify) = sre->sre_length; 4042 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 4043 0, 0, stcb->asoc.context, 0, 0, 0, 4044 m_notify); 4045 if (control != NULL) { 4046 control->length = SCTP_BUF_LEN(m_notify); 4047 control->spec_flags = M_NOTIFICATION; 4048 /* not that we need this */ 4049 control->tail_mbuf = m_notify; 4050 sctp_add_to_readq(stcb->sctp_ep, stcb, 4051 control, 4052 &stcb->sctp_socket->so_rcv, 1, 4053 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 4054 } else { 4055 sctp_m_freem(m_notify); 4056 } 4057 } 4058 4059 void 4060 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb, 4061 uint32_t error, void *data, int so_locked) 4062 { 4063 if ((stcb == NULL) || 4064 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 4065 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 4066 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 4067 /* If the socket is gone we are out of here */ 4068 return; 4069 } 4070 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) { 4071 return; 4072 } 4073 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) || 4074 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) { 4075 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) || 4076 (notification == SCTP_NOTIFY_INTERFACE_UP) || 4077 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) { 4078 /* Don't report these in front states */ 4079 return; 4080 } 4081 } 4082 switch (notification) { 4083 case SCTP_NOTIFY_ASSOC_UP: 4084 if (stcb->asoc.assoc_up_sent == 0) { 4085 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, false, false, so_locked); 4086 stcb->asoc.assoc_up_sent = 1; 4087 } 4088 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) { 4089 sctp_notify_adaptation_layer(stcb); 4090 } 4091 if (stcb->asoc.auth_supported == 0) { 4092 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, 4093 NULL, so_locked); 4094 } 4095 break; 4096 case SCTP_NOTIFY_ASSOC_DOWN: 4097 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, false, false, so_locked); 4098 break; 4099 case SCTP_NOTIFY_INTERFACE_DOWN: 4100 { 4101 struct sctp_nets *net; 4102 4103 net = (struct sctp_nets *)data; 4104 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE, 4105 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 4106 break; 4107 } 4108 case SCTP_NOTIFY_INTERFACE_UP: 4109 { 4110 struct sctp_nets *net; 4111 4112 net = (struct sctp_nets *)data; 4113 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE, 4114 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 4115 break; 4116 } 4117 case SCTP_NOTIFY_INTERFACE_CONFIRMED: 4118 { 4119 struct sctp_nets *net; 4120 4121 net = (struct sctp_nets *)data; 4122 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED, 4123 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 4124 break; 4125 } 4126 case SCTP_NOTIFY_SPECIAL_SP_FAIL: 4127 sctp_notify_send_failed2(stcb, error, 4128 (struct sctp_stream_queue_pending *)data, so_locked); 4129 break; 4130 case SCTP_NOTIFY_SENT_DG_FAIL: 4131 sctp_notify_send_failed(stcb, 1, error, 4132 (struct sctp_tmit_chunk *)data, so_locked); 4133 break; 4134 case SCTP_NOTIFY_UNSENT_DG_FAIL: 4135 sctp_notify_send_failed(stcb, 0, error, 4136 (struct sctp_tmit_chunk *)data, so_locked); 4137 break; 4138 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION: 4139 { 4140 uint32_t val; 4141 4142 val = *((uint32_t *)data); 4143 4144 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked); 4145 break; 4146 } 4147 case SCTP_NOTIFY_ASSOC_LOC_ABORTED: 4148 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) || 4149 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) { 4150 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, false, so_locked); 4151 } else { 4152 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, false, so_locked); 4153 } 4154 break; 4155 case SCTP_NOTIFY_ASSOC_REM_ABORTED: 4156 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) || 4157 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) { 4158 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, true, false, so_locked); 4159 } else { 4160 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, true, false, so_locked); 4161 } 4162 break; 4163 case SCTP_NOTIFY_ASSOC_TIMEDOUT: 4164 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) || 4165 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) { 4166 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, true, so_locked); 4167 } else { 4168 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, true, so_locked); 4169 } 4170 break; 4171 case SCTP_NOTIFY_ASSOC_RESTART: 4172 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, false, false, so_locked); 4173 if (stcb->asoc.auth_supported == 0) { 4174 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, 4175 NULL, so_locked); 4176 } 4177 break; 4178 case SCTP_NOTIFY_STR_RESET_SEND: 4179 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN); 4180 break; 4181 case SCTP_NOTIFY_STR_RESET_RECV: 4182 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING); 4183 break; 4184 case SCTP_NOTIFY_STR_RESET_FAILED_OUT: 4185 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), 4186 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED)); 4187 break; 4188 case SCTP_NOTIFY_STR_RESET_DENIED_OUT: 4189 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), 4190 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED)); 4191 break; 4192 case SCTP_NOTIFY_STR_RESET_FAILED_IN: 4193 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), 4194 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED)); 4195 break; 4196 case SCTP_NOTIFY_STR_RESET_DENIED_IN: 4197 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), 4198 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED)); 4199 break; 4200 case SCTP_NOTIFY_ASCONF_ADD_IP: 4201 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data, 4202 error, so_locked); 4203 break; 4204 case SCTP_NOTIFY_ASCONF_DELETE_IP: 4205 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data, 4206 error, so_locked); 4207 break; 4208 case SCTP_NOTIFY_ASCONF_SET_PRIMARY: 4209 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data, 4210 error, so_locked); 4211 break; 4212 case SCTP_NOTIFY_PEER_SHUTDOWN: 4213 sctp_notify_shutdown_event(stcb); 4214 break; 4215 case SCTP_NOTIFY_AUTH_NEW_KEY: 4216 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error, 4217 (uint16_t)(uintptr_t)data, 4218 so_locked); 4219 break; 4220 case SCTP_NOTIFY_AUTH_FREE_KEY: 4221 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error, 4222 (uint16_t)(uintptr_t)data, 4223 so_locked); 4224 break; 4225 case SCTP_NOTIFY_NO_PEER_AUTH: 4226 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error, 4227 (uint16_t)(uintptr_t)data, 4228 so_locked); 4229 break; 4230 case SCTP_NOTIFY_SENDER_DRY: 4231 sctp_notify_sender_dry_event(stcb, so_locked); 4232 break; 4233 case SCTP_NOTIFY_REMOTE_ERROR: 4234 sctp_notify_remote_error(stcb, error, data); 4235 break; 4236 default: 4237 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n", 4238 __func__, notification, notification); 4239 break; 4240 } /* end switch */ 4241 } 4242 4243 void 4244 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int so_locked) 4245 { 4246 struct sctp_association *asoc; 4247 struct sctp_stream_out *outs; 4248 struct sctp_tmit_chunk *chk, *nchk; 4249 struct sctp_stream_queue_pending *sp, *nsp; 4250 int i; 4251 4252 if (stcb == NULL) { 4253 return; 4254 } 4255 asoc = &stcb->asoc; 4256 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) { 4257 /* already being freed */ 4258 return; 4259 } 4260 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 4261 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 4262 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) { 4263 return; 4264 } 4265 /* now through all the gunk freeing chunks */ 4266 /* sent queue SHOULD be empty */ 4267 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) { 4268 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next); 4269 asoc->sent_queue_cnt--; 4270 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) { 4271 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) { 4272 asoc->strmout[chk->rec.data.sid].chunks_on_queues--; 4273 #ifdef INVARIANTS 4274 } else { 4275 panic("No chunks on the queues for sid %u.", chk->rec.data.sid); 4276 #endif 4277 } 4278 } 4279 if (chk->data != NULL) { 4280 sctp_free_bufspace(stcb, asoc, chk, 1); 4281 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 4282 error, chk, so_locked); 4283 if (chk->data) { 4284 sctp_m_freem(chk->data); 4285 chk->data = NULL; 4286 } 4287 } 4288 sctp_free_a_chunk(stcb, chk, so_locked); 4289 /* sa_ignore FREED_MEMORY */ 4290 } 4291 /* pending send queue SHOULD be empty */ 4292 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { 4293 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next); 4294 asoc->send_queue_cnt--; 4295 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) { 4296 asoc->strmout[chk->rec.data.sid].chunks_on_queues--; 4297 #ifdef INVARIANTS 4298 } else { 4299 panic("No chunks on the queues for sid %u.", chk->rec.data.sid); 4300 #endif 4301 } 4302 if (chk->data != NULL) { 4303 sctp_free_bufspace(stcb, asoc, chk, 1); 4304 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 4305 error, chk, so_locked); 4306 if (chk->data) { 4307 sctp_m_freem(chk->data); 4308 chk->data = NULL; 4309 } 4310 } 4311 sctp_free_a_chunk(stcb, chk, so_locked); 4312 /* sa_ignore FREED_MEMORY */ 4313 } 4314 for (i = 0; i < asoc->streamoutcnt; i++) { 4315 /* For each stream */ 4316 outs = &asoc->strmout[i]; 4317 /* clean up any sends there */ 4318 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) { 4319 atomic_subtract_int(&asoc->stream_queue_cnt, 1); 4320 TAILQ_REMOVE(&outs->outqueue, sp, next); 4321 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp); 4322 sctp_free_spbufspace(stcb, asoc, sp); 4323 if (sp->data) { 4324 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb, 4325 error, (void *)sp, so_locked); 4326 if (sp->data) { 4327 sctp_m_freem(sp->data); 4328 sp->data = NULL; 4329 sp->tail_mbuf = NULL; 4330 sp->length = 0; 4331 } 4332 } 4333 if (sp->net) { 4334 sctp_free_remote_addr(sp->net); 4335 sp->net = NULL; 4336 } 4337 /* Free the chunk */ 4338 sctp_free_a_strmoq(stcb, sp, so_locked); 4339 /* sa_ignore FREED_MEMORY */ 4340 } 4341 } 4342 } 4343 4344 void 4345 sctp_abort_notification(struct sctp_tcb *stcb, bool from_peer, bool timeout, 4346 uint16_t error, struct sctp_abort_chunk *abort, 4347 int so_locked) 4348 { 4349 if (stcb == NULL) { 4350 return; 4351 } 4352 SCTP_TCB_LOCK_ASSERT(stcb); 4353 4354 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || 4355 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 4356 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) { 4357 sctp_pcb_add_flags(stcb->sctp_ep, SCTP_PCB_FLAGS_WAS_ABORTED); 4358 } 4359 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 4360 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 4361 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 4362 return; 4363 } 4364 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED); 4365 /* Tell them we lost the asoc */ 4366 sctp_report_all_outbound(stcb, error, so_locked); 4367 if (from_peer) { 4368 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked); 4369 } else { 4370 if (timeout) { 4371 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_TIMEDOUT, stcb, error, abort, so_locked); 4372 } else { 4373 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked); 4374 } 4375 } 4376 } 4377 4378 void 4379 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 4380 struct mbuf *m, int iphlen, 4381 struct sockaddr *src, struct sockaddr *dst, 4382 struct sctphdr *sh, struct mbuf *op_err, 4383 uint8_t mflowtype, uint32_t mflowid, 4384 uint32_t vrf_id, uint16_t port) 4385 { 4386 struct sctp_gen_error_cause *cause; 4387 uint32_t vtag; 4388 uint16_t cause_code; 4389 4390 if (stcb != NULL) { 4391 vtag = stcb->asoc.peer_vtag; 4392 vrf_id = stcb->asoc.vrf_id; 4393 if (op_err != NULL) { 4394 /* Read the cause code from the error cause. */ 4395 cause = mtod(op_err, struct sctp_gen_error_cause *); 4396 cause_code = ntohs(cause->code); 4397 } else { 4398 cause_code = 0; 4399 } 4400 } else { 4401 vtag = 0; 4402 } 4403 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err, 4404 mflowtype, mflowid, inp->fibnum, 4405 vrf_id, port); 4406 if (stcb != NULL) { 4407 /* We have a TCB to abort, send notification too */ 4408 sctp_abort_notification(stcb, false, false, cause_code, NULL, SCTP_SO_NOT_LOCKED); 4409 /* Ok, now lets free it */ 4410 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 4411 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) || 4412 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 4413 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 4414 } 4415 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 4416 SCTP_FROM_SCTPUTIL + SCTP_LOC_4); 4417 } 4418 } 4419 #ifdef SCTP_ASOCLOG_OF_TSNS 4420 void 4421 sctp_print_out_track_log(struct sctp_tcb *stcb) 4422 { 4423 #ifdef NOSIY_PRINTS 4424 int i; 4425 4426 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code); 4427 SCTP_PRINTF("IN bound TSN log-aaa\n"); 4428 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) { 4429 SCTP_PRINTF("None rcvd\n"); 4430 goto none_in; 4431 } 4432 if (stcb->asoc.tsn_in_wrapped) { 4433 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) { 4434 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4435 stcb->asoc.in_tsnlog[i].tsn, 4436 stcb->asoc.in_tsnlog[i].strm, 4437 stcb->asoc.in_tsnlog[i].seq, 4438 stcb->asoc.in_tsnlog[i].flgs, 4439 stcb->asoc.in_tsnlog[i].sz); 4440 } 4441 } 4442 if (stcb->asoc.tsn_in_at) { 4443 for (i = 0; i < stcb->asoc.tsn_in_at; i++) { 4444 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4445 stcb->asoc.in_tsnlog[i].tsn, 4446 stcb->asoc.in_tsnlog[i].strm, 4447 stcb->asoc.in_tsnlog[i].seq, 4448 stcb->asoc.in_tsnlog[i].flgs, 4449 stcb->asoc.in_tsnlog[i].sz); 4450 } 4451 } 4452 none_in: 4453 SCTP_PRINTF("OUT bound TSN log-aaa\n"); 4454 if ((stcb->asoc.tsn_out_at == 0) && 4455 (stcb->asoc.tsn_out_wrapped == 0)) { 4456 SCTP_PRINTF("None sent\n"); 4457 } 4458 if (stcb->asoc.tsn_out_wrapped) { 4459 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) { 4460 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4461 stcb->asoc.out_tsnlog[i].tsn, 4462 stcb->asoc.out_tsnlog[i].strm, 4463 stcb->asoc.out_tsnlog[i].seq, 4464 stcb->asoc.out_tsnlog[i].flgs, 4465 stcb->asoc.out_tsnlog[i].sz); 4466 } 4467 } 4468 if (stcb->asoc.tsn_out_at) { 4469 for (i = 0; i < stcb->asoc.tsn_out_at; i++) { 4470 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4471 stcb->asoc.out_tsnlog[i].tsn, 4472 stcb->asoc.out_tsnlog[i].strm, 4473 stcb->asoc.out_tsnlog[i].seq, 4474 stcb->asoc.out_tsnlog[i].flgs, 4475 stcb->asoc.out_tsnlog[i].sz); 4476 } 4477 } 4478 #endif 4479 } 4480 #endif 4481 4482 void 4483 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 4484 struct mbuf *op_err, bool timedout, int so_locked) 4485 { 4486 struct sctp_gen_error_cause *cause; 4487 uint16_t cause_code; 4488 4489 if (stcb == NULL) { 4490 /* Got to have a TCB */ 4491 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4492 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 4493 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 4494 SCTP_CALLED_DIRECTLY_NOCMPSET); 4495 } 4496 } 4497 return; 4498 } 4499 if (op_err != NULL) { 4500 /* Read the cause code from the error cause. */ 4501 cause = mtod(op_err, struct sctp_gen_error_cause *); 4502 cause_code = ntohs(cause->code); 4503 } else { 4504 cause_code = 0; 4505 } 4506 /* notify the peer */ 4507 sctp_send_abort_tcb(stcb, op_err, so_locked); 4508 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 4509 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) || 4510 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 4511 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 4512 } 4513 /* notify the ulp */ 4514 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 4515 sctp_abort_notification(stcb, false, timedout, cause_code, NULL, so_locked); 4516 } 4517 /* now free the asoc */ 4518 #ifdef SCTP_ASOCLOG_OF_TSNS 4519 sctp_print_out_track_log(stcb); 4520 #endif 4521 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 4522 SCTP_FROM_SCTPUTIL + SCTP_LOC_5); 4523 } 4524 4525 void 4526 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, 4527 struct sockaddr *src, struct sockaddr *dst, 4528 struct sctphdr *sh, struct sctp_inpcb *inp, 4529 struct mbuf *cause, 4530 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, 4531 uint32_t vrf_id, uint16_t port) 4532 { 4533 struct sctp_chunkhdr *ch, chunk_buf; 4534 unsigned int chk_length; 4535 int contains_init_chunk; 4536 4537 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue); 4538 /* Generate a TO address for future reference */ 4539 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { 4540 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 4541 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 4542 SCTP_CALLED_DIRECTLY_NOCMPSET); 4543 } 4544 } 4545 contains_init_chunk = 0; 4546 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4547 sizeof(*ch), (uint8_t *)&chunk_buf); 4548 while (ch != NULL) { 4549 chk_length = ntohs(ch->chunk_length); 4550 if (chk_length < sizeof(*ch)) { 4551 /* break to abort land */ 4552 break; 4553 } 4554 switch (ch->chunk_type) { 4555 case SCTP_INIT: 4556 contains_init_chunk = 1; 4557 break; 4558 case SCTP_PACKET_DROPPED: 4559 /* we don't respond to pkt-dropped */ 4560 return; 4561 case SCTP_ABORT_ASSOCIATION: 4562 /* we don't respond with an ABORT to an ABORT */ 4563 return; 4564 case SCTP_SHUTDOWN_COMPLETE: 4565 /* 4566 * we ignore it since we are not waiting for it and 4567 * peer is gone 4568 */ 4569 return; 4570 case SCTP_SHUTDOWN_ACK: 4571 sctp_send_shutdown_complete2(src, dst, sh, 4572 mflowtype, mflowid, fibnum, 4573 vrf_id, port); 4574 return; 4575 default: 4576 break; 4577 } 4578 offset += SCTP_SIZE32(chk_length); 4579 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4580 sizeof(*ch), (uint8_t *)&chunk_buf); 4581 } 4582 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) || 4583 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) && 4584 (contains_init_chunk == 0))) { 4585 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause, 4586 mflowtype, mflowid, fibnum, 4587 vrf_id, port); 4588 } 4589 } 4590 4591 /* 4592 * check the inbound datagram to make sure there is not an abort inside it, 4593 * if there is return 1, else return 0. 4594 */ 4595 int 4596 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtag) 4597 { 4598 struct sctp_chunkhdr *ch; 4599 struct sctp_init_chunk *init_chk, chunk_buf; 4600 int offset; 4601 unsigned int chk_length; 4602 4603 offset = iphlen + sizeof(struct sctphdr); 4604 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), 4605 (uint8_t *)&chunk_buf); 4606 while (ch != NULL) { 4607 chk_length = ntohs(ch->chunk_length); 4608 if (chk_length < sizeof(*ch)) { 4609 /* packet is probably corrupt */ 4610 break; 4611 } 4612 /* we seem to be ok, is it an abort? */ 4613 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) { 4614 /* yep, tell them */ 4615 return (1); 4616 } 4617 if ((ch->chunk_type == SCTP_INITIATION) || 4618 (ch->chunk_type == SCTP_INITIATION_ACK)) { 4619 /* need to update the Vtag */ 4620 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 4621 offset, sizeof(struct sctp_init_chunk), (uint8_t *)&chunk_buf); 4622 if (init_chk != NULL) { 4623 *vtag = ntohl(init_chk->init.initiate_tag); 4624 } 4625 } 4626 /* Nope, move to the next chunk */ 4627 offset += SCTP_SIZE32(chk_length); 4628 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4629 sizeof(*ch), (uint8_t *)&chunk_buf); 4630 } 4631 return (0); 4632 } 4633 4634 /* 4635 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id 4636 * set (i.e. it's 0) so, create this function to compare link local scopes 4637 */ 4638 #ifdef INET6 4639 uint32_t 4640 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2) 4641 { 4642 struct sockaddr_in6 a, b; 4643 4644 /* save copies */ 4645 a = *addr1; 4646 b = *addr2; 4647 4648 if (a.sin6_scope_id == 0) 4649 if (sa6_recoverscope(&a)) { 4650 /* can't get scope, so can't match */ 4651 return (0); 4652 } 4653 if (b.sin6_scope_id == 0) 4654 if (sa6_recoverscope(&b)) { 4655 /* can't get scope, so can't match */ 4656 return (0); 4657 } 4658 if (a.sin6_scope_id != b.sin6_scope_id) 4659 return (0); 4660 4661 return (1); 4662 } 4663 4664 /* 4665 * returns a sockaddr_in6 with embedded scope recovered and removed 4666 */ 4667 struct sockaddr_in6 * 4668 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store) 4669 { 4670 /* check and strip embedded scope junk */ 4671 if (addr->sin6_family == AF_INET6) { 4672 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) { 4673 if (addr->sin6_scope_id == 0) { 4674 *store = *addr; 4675 if (!sa6_recoverscope(store)) { 4676 /* use the recovered scope */ 4677 addr = store; 4678 } 4679 } else { 4680 /* else, return the original "to" addr */ 4681 in6_clearscope(&addr->sin6_addr); 4682 } 4683 } 4684 } 4685 return (addr); 4686 } 4687 #endif 4688 4689 /* 4690 * are the two addresses the same? currently a "scopeless" check returns: 1 4691 * if same, 0 if not 4692 */ 4693 int 4694 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2) 4695 { 4696 4697 /* must be valid */ 4698 if (sa1 == NULL || sa2 == NULL) 4699 return (0); 4700 4701 /* must be the same family */ 4702 if (sa1->sa_family != sa2->sa_family) 4703 return (0); 4704 4705 switch (sa1->sa_family) { 4706 #ifdef INET6 4707 case AF_INET6: 4708 { 4709 /* IPv6 addresses */ 4710 struct sockaddr_in6 *sin6_1, *sin6_2; 4711 4712 sin6_1 = (struct sockaddr_in6 *)sa1; 4713 sin6_2 = (struct sockaddr_in6 *)sa2; 4714 return (SCTP6_ARE_ADDR_EQUAL(sin6_1, 4715 sin6_2)); 4716 } 4717 #endif 4718 #ifdef INET 4719 case AF_INET: 4720 { 4721 /* IPv4 addresses */ 4722 struct sockaddr_in *sin_1, *sin_2; 4723 4724 sin_1 = (struct sockaddr_in *)sa1; 4725 sin_2 = (struct sockaddr_in *)sa2; 4726 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr); 4727 } 4728 #endif 4729 default: 4730 /* we don't do these... */ 4731 return (0); 4732 } 4733 } 4734 4735 void 4736 sctp_print_address(struct sockaddr *sa) 4737 { 4738 #ifdef INET6 4739 char ip6buf[INET6_ADDRSTRLEN]; 4740 #endif 4741 4742 switch (sa->sa_family) { 4743 #ifdef INET6 4744 case AF_INET6: 4745 { 4746 struct sockaddr_in6 *sin6; 4747 4748 sin6 = (struct sockaddr_in6 *)sa; 4749 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n", 4750 ip6_sprintf(ip6buf, &sin6->sin6_addr), 4751 ntohs(sin6->sin6_port), 4752 sin6->sin6_scope_id); 4753 break; 4754 } 4755 #endif 4756 #ifdef INET 4757 case AF_INET: 4758 { 4759 struct sockaddr_in *sin; 4760 unsigned char *p; 4761 4762 sin = (struct sockaddr_in *)sa; 4763 p = (unsigned char *)&sin->sin_addr; 4764 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n", 4765 p[0], p[1], p[2], p[3], ntohs(sin->sin_port)); 4766 break; 4767 } 4768 #endif 4769 default: 4770 SCTP_PRINTF("?\n"); 4771 break; 4772 } 4773 } 4774 4775 void 4776 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 4777 struct sctp_inpcb *new_inp, 4778 struct sctp_tcb *stcb, 4779 int waitflags) 4780 { 4781 /* 4782 * go through our old INP and pull off any control structures that 4783 * belong to stcb and move then to the new inp. 4784 */ 4785 struct socket *old_so, *new_so; 4786 struct sctp_queued_to_read *control, *nctl; 4787 struct sctp_readhead tmp_queue; 4788 struct mbuf *m; 4789 int error = 0; 4790 4791 old_so = old_inp->sctp_socket; 4792 new_so = new_inp->sctp_socket; 4793 TAILQ_INIT(&tmp_queue); 4794 error = SOCK_IO_RECV_LOCK(old_so, waitflags); 4795 if (error) { 4796 /* 4797 * Gak, can't get I/O lock, we have a problem. data will be 4798 * left stranded.. and we don't dare look at it since the 4799 * other thread may be reading something. Oh well, its a 4800 * screwed up app that does a peeloff OR a accept while 4801 * reading from the main socket... actually its only the 4802 * peeloff() case, since I think read will fail on a 4803 * listening socket.. 4804 */ 4805 return; 4806 } 4807 /* lock the socket buffers */ 4808 SCTP_INP_READ_LOCK(old_inp); 4809 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) { 4810 /* Pull off all for out target stcb */ 4811 if (control->stcb == stcb) { 4812 /* remove it we want it */ 4813 TAILQ_REMOVE(&old_inp->read_queue, control, next); 4814 TAILQ_INSERT_TAIL(&tmp_queue, control, next); 4815 m = control->data; 4816 while (m) { 4817 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4818 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 4819 } 4820 sctp_sbfree(control, stcb, &old_so->so_rcv, m); 4821 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4822 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4823 } 4824 m = SCTP_BUF_NEXT(m); 4825 } 4826 } 4827 } 4828 SCTP_INP_READ_UNLOCK(old_inp); 4829 /* Remove the recv-lock on the old socket */ 4830 SOCK_IO_RECV_UNLOCK(old_so); 4831 /* Now we move them over to the new socket buffer */ 4832 SCTP_INP_READ_LOCK(new_inp); 4833 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) { 4834 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next); 4835 m = control->data; 4836 while (m) { 4837 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4838 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4839 } 4840 sctp_sballoc(stcb, &new_so->so_rcv, m); 4841 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4842 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4843 } 4844 m = SCTP_BUF_NEXT(m); 4845 } 4846 } 4847 SCTP_INP_READ_UNLOCK(new_inp); 4848 } 4849 4850 void 4851 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp, 4852 struct sctp_tcb *stcb, 4853 int so_locked 4854 SCTP_UNUSED 4855 ) 4856 { 4857 if ((inp != NULL) && 4858 (inp->sctp_socket != NULL) && 4859 (((inp->sctp_flags & (SCTP_PCB_FLAGS_TCPTYPE | SCTP_PCB_FLAGS_IN_TCPPOOL)) == 0) || 4860 !SCTP_IS_LISTENING(inp))) { 4861 sctp_sorwakeup(inp, inp->sctp_socket); 4862 } 4863 } 4864 4865 void 4866 sctp_add_to_readq(struct sctp_inpcb *inp, 4867 struct sctp_tcb *stcb, 4868 struct sctp_queued_to_read *control, 4869 struct sockbuf *sb, 4870 int end, 4871 int inp_read_lock_held, 4872 int so_locked) 4873 { 4874 /* 4875 * Here we must place the control on the end of the socket read 4876 * queue AND increment sb_cc so that select will work properly on 4877 * read. 4878 */ 4879 struct mbuf *m, *prev = NULL; 4880 4881 if (inp == NULL) { 4882 /* Gak, TSNH!! */ 4883 #ifdef INVARIANTS 4884 panic("Gak, inp NULL on add_to_readq"); 4885 #endif 4886 return; 4887 } 4888 if (inp_read_lock_held == SCTP_READ_LOCK_NOT_HELD) { 4889 SCTP_INP_READ_LOCK(inp); 4890 } 4891 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { 4892 if (!control->on_strm_q) { 4893 sctp_free_remote_addr(control->whoFrom); 4894 if (control->data) { 4895 sctp_m_freem(control->data); 4896 control->data = NULL; 4897 } 4898 sctp_free_a_readq(stcb, control); 4899 } 4900 if (inp_read_lock_held == SCTP_READ_LOCK_NOT_HELD) { 4901 SCTP_INP_READ_UNLOCK(inp); 4902 } 4903 return; 4904 } 4905 if ((control->spec_flags & M_NOTIFICATION) == 0) { 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 != NULL) { 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 != NULL) && (inp->sctp_socket != NULL)) { 4959 sctp_wakeup_the_read_socket(inp, stcb, so_locked); 4960 } 4961 if (inp_read_lock_held == SCTP_READ_LOCK_NOT_HELD) { 4962 SCTP_INP_READ_UNLOCK(inp); 4963 } 4964 } 4965 4966 /*************HOLD THIS COMMENT FOR PATCH FILE OF 4967 *************ALTERNATE ROUTING CODE 4968 */ 4969 4970 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF 4971 *************ALTERNATE ROUTING CODE 4972 */ 4973 4974 struct mbuf * 4975 sctp_generate_cause(uint16_t code, char *info) 4976 { 4977 struct mbuf *m; 4978 struct sctp_gen_error_cause *cause; 4979 size_t info_len; 4980 uint16_t len; 4981 4982 if ((code == 0) || (info == NULL)) { 4983 return (NULL); 4984 } 4985 info_len = strlen(info); 4986 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) { 4987 return (NULL); 4988 } 4989 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len); 4990 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); 4991 if (m != NULL) { 4992 SCTP_BUF_LEN(m) = len; 4993 cause = mtod(m, struct sctp_gen_error_cause *); 4994 cause->code = htons(code); 4995 cause->length = htons(len); 4996 memcpy(cause->info, info, info_len); 4997 } 4998 return (m); 4999 } 5000 5001 struct mbuf * 5002 sctp_generate_no_user_data_cause(uint32_t tsn) 5003 { 5004 struct mbuf *m; 5005 struct sctp_error_no_user_data *no_user_data_cause; 5006 uint16_t len; 5007 5008 len = (uint16_t)sizeof(struct sctp_error_no_user_data); 5009 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); 5010 if (m != NULL) { 5011 SCTP_BUF_LEN(m) = len; 5012 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *); 5013 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA); 5014 no_user_data_cause->cause.length = htons(len); 5015 no_user_data_cause->tsn = htonl(tsn); 5016 } 5017 return (m); 5018 } 5019 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 atomic_subtract_int(&asoc->chunks_on_out_queue, chk_cnt); 5028 #ifdef SCTP_MBCNT_LOGGING 5029 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) { 5030 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE, 5031 asoc->total_output_queue_size, 5032 tp1->book_size, 5033 0, 5034 tp1->mbcnt); 5035 } 5036 #endif 5037 if (asoc->total_output_queue_size >= tp1->book_size) { 5038 atomic_subtract_int(&asoc->total_output_queue_size, tp1->book_size); 5039 } else { 5040 asoc->total_output_queue_size = 0; 5041 } 5042 if ((stcb->sctp_socket != NULL) && 5043 (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) || 5044 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) { 5045 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { 5046 atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); 5047 } else { 5048 stcb->sctp_socket->so_snd.sb_cc = 0; 5049 } 5050 } 5051 } 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 SCTP_TCB_LOCK_ASSERT(stcb); 5068 5069 sid = tp1->rec.data.sid; 5070 mid = tp1->rec.data.mid; 5071 if (sent || ((tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) == 0)) { 5072 stcb->asoc.abandoned_sent[0]++; 5073 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++; 5074 stcb->asoc.strmout[sid].abandoned_sent[0]++; 5075 #if defined(SCTP_DETAILED_STR_STATS) 5076 stcb->asoc.strmout[sid].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++; 5077 #endif 5078 } else { 5079 stcb->asoc.abandoned_unsent[0]++; 5080 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++; 5081 stcb->asoc.strmout[sid].abandoned_unsent[0]++; 5082 #if defined(SCTP_DETAILED_STR_STATS) 5083 stcb->asoc.strmout[sid].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++; 5084 #endif 5085 } 5086 do { 5087 ret_sz += tp1->book_size; 5088 if (tp1->data != NULL) { 5089 if (tp1->sent < SCTP_DATAGRAM_RESEND) { 5090 sctp_flight_size_decrease(tp1); 5091 sctp_total_flight_decrease(stcb, tp1); 5092 } 5093 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 5094 stcb->asoc.peers_rwnd += tp1->send_size; 5095 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh); 5096 if (sent) { 5097 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); 5098 } else { 5099 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); 5100 } 5101 if (tp1->data) { 5102 sctp_m_freem(tp1->data); 5103 tp1->data = NULL; 5104 } 5105 do_wakeup_routine = 1; 5106 if (PR_SCTP_BUF_ENABLED(tp1->flags)) { 5107 stcb->asoc.sent_queue_cnt_removeable--; 5108 } 5109 } 5110 tp1->sent = SCTP_FORWARD_TSN_SKIP; 5111 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) == 5112 SCTP_DATA_NOT_FRAG) { 5113 /* not frag'ed we ae done */ 5114 notdone = 0; 5115 foundeom = 1; 5116 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 5117 /* end of frag, we are done */ 5118 notdone = 0; 5119 foundeom = 1; 5120 } else { 5121 /* 5122 * Its a begin or middle piece, we must mark all of 5123 * it 5124 */ 5125 notdone = 1; 5126 tp1 = TAILQ_NEXT(tp1, sctp_next); 5127 } 5128 } while (tp1 && notdone); 5129 if (foundeom == 0) { 5130 /* 5131 * The multi-part message was scattered across the send and 5132 * sent queue. 5133 */ 5134 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) { 5135 if ((tp1->rec.data.sid != sid) || 5136 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) { 5137 break; 5138 } 5139 /* 5140 * save to chk in case we have some on stream out 5141 * queue. If so and we have an un-transmitted one we 5142 * don't have to fudge the TSN. 5143 */ 5144 chk = tp1; 5145 ret_sz += tp1->book_size; 5146 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 5147 if (sent) { 5148 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); 5149 } else { 5150 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); 5151 } 5152 if (tp1->data) { 5153 sctp_m_freem(tp1->data); 5154 tp1->data = NULL; 5155 } 5156 /* No flight involved here book the size to 0 */ 5157 tp1->book_size = 0; 5158 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 5159 foundeom = 1; 5160 } 5161 do_wakeup_routine = 1; 5162 tp1->sent = SCTP_FORWARD_TSN_SKIP; 5163 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next); 5164 /* 5165 * on to the sent queue so we can wait for it to be 5166 * passed by. 5167 */ 5168 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1, 5169 sctp_next); 5170 stcb->asoc.send_queue_cnt--; 5171 stcb->asoc.sent_queue_cnt++; 5172 } 5173 } 5174 if (foundeom == 0) { 5175 /* 5176 * Still no eom found. That means there is stuff left on the 5177 * stream out queue.. yuck. 5178 */ 5179 strq = &stcb->asoc.strmout[sid]; 5180 sp = TAILQ_FIRST(&strq->outqueue); 5181 if (sp != NULL) { 5182 sp->discard_rest = 1; 5183 /* 5184 * We may need to put a chunk on the queue that 5185 * holds the TSN that would have been sent with the 5186 * LAST bit. 5187 */ 5188 if (chk == NULL) { 5189 /* Yep, we have to */ 5190 sctp_alloc_a_chunk(stcb, chk); 5191 if (chk == NULL) { 5192 /* 5193 * we are hosed. All we can do is 5194 * nothing.. which will cause an 5195 * abort if the peer is paying 5196 * attention. 5197 */ 5198 goto oh_well; 5199 } 5200 memset(chk, 0, sizeof(*chk)); 5201 chk->rec.data.rcv_flags = 0; 5202 chk->sent = SCTP_FORWARD_TSN_SKIP; 5203 chk->asoc = &stcb->asoc; 5204 if (stcb->asoc.idata_supported == 0) { 5205 if (sp->sinfo_flags & SCTP_UNORDERED) { 5206 chk->rec.data.mid = 0; 5207 } else { 5208 chk->rec.data.mid = strq->next_mid_ordered; 5209 } 5210 } else { 5211 if (sp->sinfo_flags & SCTP_UNORDERED) { 5212 chk->rec.data.mid = strq->next_mid_unordered; 5213 } else { 5214 chk->rec.data.mid = strq->next_mid_ordered; 5215 } 5216 } 5217 chk->rec.data.sid = sp->sid; 5218 chk->rec.data.ppid = sp->ppid; 5219 chk->rec.data.context = sp->context; 5220 chk->flags = sp->act_flags; 5221 chk->whoTo = NULL; 5222 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1); 5223 strq->chunks_on_queues++; 5224 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next); 5225 stcb->asoc.sent_queue_cnt++; 5226 stcb->asoc.pr_sctp_cnt++; 5227 } 5228 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG; 5229 if (sp->sinfo_flags & SCTP_UNORDERED) { 5230 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED; 5231 } 5232 if (stcb->asoc.idata_supported == 0) { 5233 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) { 5234 strq->next_mid_ordered++; 5235 } 5236 } else { 5237 if (sp->sinfo_flags & SCTP_UNORDERED) { 5238 strq->next_mid_unordered++; 5239 } else { 5240 strq->next_mid_ordered++; 5241 } 5242 } 5243 oh_well: 5244 if (sp->data) { 5245 /* 5246 * Pull any data to free up the SB and allow 5247 * sender to "add more" while we will throw 5248 * away :-) 5249 */ 5250 sctp_free_spbufspace(stcb, &stcb->asoc, sp); 5251 ret_sz += sp->length; 5252 do_wakeup_routine = 1; 5253 sp->some_taken = 1; 5254 sctp_m_freem(sp->data); 5255 sp->data = NULL; 5256 sp->tail_mbuf = NULL; 5257 sp->length = 0; 5258 } 5259 } 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_subtract_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, SCTP_SBAVAIL(&so->so_rcv), (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, SCTP_SBAVAIL(&so->so_rcv), (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) && SCTP_SBAVAIL(&so->so_rcv) == 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 (SCTP_SBAVAIL(&so->so_rcv) == 0) { 5612 /* indicate EOF */ 5613 error = 0; 5614 goto out; 5615 } 5616 } 5617 } 5618 if (SCTP_SBAVAIL(&so->so_rcv) <= 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 ((SCTP_SBAVAIL(&so->so_rcv) == 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) && (SCTP_SBAVAIL(&so->so_rcv) > 0)) { 5687 #ifdef INVARIANTS 5688 panic("Huh, its non zero and nothing on control?"); 5689 #endif 5690 SCTP_SB_CLEAR(so->so_rcv); 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 hidden 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 notification 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 = SCTP_SBAVAIL(&so->so_rcv); 5822 control->held_length = SCTP_SBAVAIL(&so->so_rcv); 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 .. invariants 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 hidden 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 (SCTP_SBAVAIL(&so->so_rcv) <= 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 (SCTP_SBAVAIL(&so->so_rcv) > held_length) { 6299 control->held_length = SCTP_SBAVAIL(&so->so_rcv); 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_subtract_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 SCTP_SBAVAIL(&so->so_rcv)); 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 SCTP_SBAVAIL(&so->so_rcv)); 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 bool 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 (true); 7199 out: 7200 m_freem(m); 7201 7202 return (true); 7203 } 7204 7205 #ifdef INET 7206 static void 7207 sctp_recv_icmp_tunneled_packet(udp_tun_icmp_param_t param) 7208 { 7209 struct icmp *icmp = param.icmp; 7210 struct ip *outer_ip, *inner_ip; 7211 struct sctphdr *sh; 7212 struct udphdr *udp; 7213 struct sctp_inpcb *inp; 7214 struct sctp_tcb *stcb; 7215 struct sctp_nets *net; 7216 struct sctp_init_chunk *ch; 7217 struct sockaddr_in src, dst; 7218 uint8_t type, code; 7219 7220 inner_ip = &icmp->icmp_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(udp_tun_icmp_param_t param) 7316 { 7317 struct ip6ctlparam *ip6cp = param.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 /* 7327 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid. 7328 */ 7329 if (ip6cp->ip6c_m == NULL) { 7330 return; 7331 } 7332 /* 7333 * Check if we can safely examine the ports and the verification tag 7334 * of the SCTP common header. 7335 */ 7336 if (ip6cp->ip6c_m->m_pkthdr.len < 7337 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) { 7338 return; 7339 } 7340 /* Copy out the UDP header. */ 7341 memset(&udp, 0, sizeof(struct udphdr)); 7342 m_copydata(ip6cp->ip6c_m, 7343 ip6cp->ip6c_off, 7344 sizeof(struct udphdr), 7345 (caddr_t)&udp); 7346 /* Copy out the port numbers and the verification tag. */ 7347 memset(&sh, 0, sizeof(struct sctphdr)); 7348 m_copydata(ip6cp->ip6c_m, 7349 ip6cp->ip6c_off + sizeof(struct udphdr), 7350 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 7351 (caddr_t)&sh); 7352 memset(&src, 0, sizeof(struct sockaddr_in6)); 7353 src.sin6_family = AF_INET6; 7354 src.sin6_len = sizeof(struct sockaddr_in6); 7355 src.sin6_port = sh.src_port; 7356 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 7357 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 7358 return; 7359 } 7360 memset(&dst, 0, sizeof(struct sockaddr_in6)); 7361 dst.sin6_family = AF_INET6; 7362 dst.sin6_len = sizeof(struct sockaddr_in6); 7363 dst.sin6_port = sh.dest_port; 7364 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 7365 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 7366 return; 7367 } 7368 inp = NULL; 7369 net = NULL; 7370 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 7371 (struct sockaddr *)&src, 7372 &inp, &net, 1, SCTP_DEFAULT_VRFID); 7373 if ((stcb != NULL) && 7374 (net != NULL) && 7375 (inp != NULL)) { 7376 /* Check the UDP port numbers */ 7377 if ((udp.uh_dport != net->port) || 7378 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) { 7379 SCTP_TCB_UNLOCK(stcb); 7380 return; 7381 } 7382 /* Check the verification tag */ 7383 if (ntohl(sh.v_tag) != 0) { 7384 /* 7385 * This must be the verification tag used for 7386 * sending out packets. We don't consider packets 7387 * reflecting the verification tag. 7388 */ 7389 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 7390 SCTP_TCB_UNLOCK(stcb); 7391 return; 7392 } 7393 } else { 7394 if (ip6cp->ip6c_m->m_pkthdr.len >= 7395 ip6cp->ip6c_off + sizeof(struct udphdr) + 7396 sizeof(struct sctphdr) + 7397 sizeof(struct sctp_chunkhdr) + 7398 offsetof(struct sctp_init, a_rwnd)) { 7399 /* 7400 * In this case we can check if we got an 7401 * INIT chunk and if the initiate tag 7402 * matches. 7403 */ 7404 uint32_t initiate_tag; 7405 uint8_t chunk_type; 7406 7407 m_copydata(ip6cp->ip6c_m, 7408 ip6cp->ip6c_off + 7409 sizeof(struct udphdr) + 7410 sizeof(struct sctphdr), 7411 sizeof(uint8_t), 7412 (caddr_t)&chunk_type); 7413 m_copydata(ip6cp->ip6c_m, 7414 ip6cp->ip6c_off + 7415 sizeof(struct udphdr) + 7416 sizeof(struct sctphdr) + 7417 sizeof(struct sctp_chunkhdr), 7418 sizeof(uint32_t), 7419 (caddr_t)&initiate_tag); 7420 if ((chunk_type != SCTP_INITIATION) || 7421 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 7422 SCTP_TCB_UNLOCK(stcb); 7423 return; 7424 } 7425 } else { 7426 SCTP_TCB_UNLOCK(stcb); 7427 return; 7428 } 7429 } 7430 type = ip6cp->ip6c_icmp6->icmp6_type; 7431 code = ip6cp->ip6c_icmp6->icmp6_code; 7432 if ((type == ICMP6_DST_UNREACH) && 7433 (code == ICMP6_DST_UNREACH_NOPORT)) { 7434 type = ICMP6_PARAM_PROB; 7435 code = ICMP6_PARAMPROB_NEXTHEADER; 7436 } 7437 sctp6_notify(inp, stcb, net, type, code, 7438 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 7439 } else { 7440 if ((stcb == NULL) && (inp != NULL)) { 7441 /* reduce inp's ref-count */ 7442 SCTP_INP_WLOCK(inp); 7443 SCTP_INP_DECR_REF(inp); 7444 SCTP_INP_WUNLOCK(inp); 7445 } 7446 if (stcb) { 7447 SCTP_TCB_UNLOCK(stcb); 7448 } 7449 } 7450 } 7451 #endif 7452 7453 void 7454 sctp_over_udp_stop(void) 7455 { 7456 /* 7457 * This function assumes sysctl caller holds sctp_sysctl_info_lock() 7458 * for writing! 7459 */ 7460 #ifdef INET 7461 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { 7462 soclose(SCTP_BASE_INFO(udp4_tun_socket)); 7463 SCTP_BASE_INFO(udp4_tun_socket) = NULL; 7464 } 7465 #endif 7466 #ifdef INET6 7467 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { 7468 soclose(SCTP_BASE_INFO(udp6_tun_socket)); 7469 SCTP_BASE_INFO(udp6_tun_socket) = NULL; 7470 } 7471 #endif 7472 } 7473 7474 int 7475 sctp_over_udp_start(void) 7476 { 7477 uint16_t port; 7478 int ret; 7479 #ifdef INET 7480 struct sockaddr_in sin; 7481 #endif 7482 #ifdef INET6 7483 struct sockaddr_in6 sin6; 7484 #endif 7485 /* 7486 * This function assumes sysctl caller holds sctp_sysctl_info_lock() 7487 * for writing! 7488 */ 7489 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port); 7490 if (ntohs(port) == 0) { 7491 /* Must have a port set */ 7492 return (EINVAL); 7493 } 7494 #ifdef INET 7495 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { 7496 /* Already running -- must stop first */ 7497 return (EALREADY); 7498 } 7499 #endif 7500 #ifdef INET6 7501 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { 7502 /* Already running -- must stop first */ 7503 return (EALREADY); 7504 } 7505 #endif 7506 #ifdef INET 7507 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket), 7508 SOCK_DGRAM, IPPROTO_UDP, 7509 curthread->td_ucred, curthread))) { 7510 sctp_over_udp_stop(); 7511 return (ret); 7512 } 7513 /* Call the special UDP hook. */ 7514 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket), 7515 sctp_recv_udp_tunneled_packet, 7516 sctp_recv_icmp_tunneled_packet, 7517 NULL))) { 7518 sctp_over_udp_stop(); 7519 return (ret); 7520 } 7521 /* Ok, we have a socket, bind it to the port. */ 7522 memset(&sin, 0, sizeof(struct sockaddr_in)); 7523 sin.sin_len = sizeof(struct sockaddr_in); 7524 sin.sin_family = AF_INET; 7525 sin.sin_port = htons(port); 7526 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket), 7527 (struct sockaddr *)&sin, curthread))) { 7528 sctp_over_udp_stop(); 7529 return (ret); 7530 } 7531 #endif 7532 #ifdef INET6 7533 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket), 7534 SOCK_DGRAM, IPPROTO_UDP, 7535 curthread->td_ucred, curthread))) { 7536 sctp_over_udp_stop(); 7537 return (ret); 7538 } 7539 /* Call the special UDP hook. */ 7540 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket), 7541 sctp_recv_udp_tunneled_packet, 7542 sctp_recv_icmp6_tunneled_packet, 7543 NULL))) { 7544 sctp_over_udp_stop(); 7545 return (ret); 7546 } 7547 /* Ok, we have a socket, bind it to the port. */ 7548 memset(&sin6, 0, sizeof(struct sockaddr_in6)); 7549 sin6.sin6_len = sizeof(struct sockaddr_in6); 7550 sin6.sin6_family = AF_INET6; 7551 sin6.sin6_port = htons(port); 7552 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket), 7553 (struct sockaddr *)&sin6, curthread))) { 7554 sctp_over_udp_stop(); 7555 return (ret); 7556 } 7557 #endif 7558 return (0); 7559 } 7560 7561 /* 7562 * sctp_min_mtu ()returns the minimum of all non-zero arguments. 7563 * If all arguments are zero, zero is returned. 7564 */ 7565 uint32_t 7566 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3) 7567 { 7568 if (mtu1 > 0) { 7569 if (mtu2 > 0) { 7570 if (mtu3 > 0) { 7571 return (min(mtu1, min(mtu2, mtu3))); 7572 } else { 7573 return (min(mtu1, mtu2)); 7574 } 7575 } else { 7576 if (mtu3 > 0) { 7577 return (min(mtu1, mtu3)); 7578 } else { 7579 return (mtu1); 7580 } 7581 } 7582 } else { 7583 if (mtu2 > 0) { 7584 if (mtu3 > 0) { 7585 return (min(mtu2, mtu3)); 7586 } else { 7587 return (mtu2); 7588 } 7589 } else { 7590 return (mtu3); 7591 } 7592 } 7593 } 7594 7595 void 7596 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu) 7597 { 7598 struct in_conninfo inc; 7599 7600 memset(&inc, 0, sizeof(struct in_conninfo)); 7601 inc.inc_fibnum = fibnum; 7602 switch (addr->sa.sa_family) { 7603 #ifdef INET 7604 case AF_INET: 7605 inc.inc_faddr = addr->sin.sin_addr; 7606 break; 7607 #endif 7608 #ifdef INET6 7609 case AF_INET6: 7610 inc.inc_flags |= INC_ISIPV6; 7611 inc.inc6_faddr = addr->sin6.sin6_addr; 7612 break; 7613 #endif 7614 default: 7615 return; 7616 } 7617 tcp_hc_updatemtu(&inc, (u_long)mtu); 7618 } 7619 7620 uint32_t 7621 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum) 7622 { 7623 struct in_conninfo inc; 7624 7625 memset(&inc, 0, sizeof(struct in_conninfo)); 7626 inc.inc_fibnum = fibnum; 7627 switch (addr->sa.sa_family) { 7628 #ifdef INET 7629 case AF_INET: 7630 inc.inc_faddr = addr->sin.sin_addr; 7631 break; 7632 #endif 7633 #ifdef INET6 7634 case AF_INET6: 7635 inc.inc_flags |= INC_ISIPV6; 7636 inc.inc6_faddr = addr->sin6.sin6_addr; 7637 break; 7638 #endif 7639 default: 7640 return (0); 7641 } 7642 return ((uint32_t)tcp_hc_getmtu(&inc)); 7643 } 7644 7645 void 7646 sctp_set_state(struct sctp_tcb *stcb, int new_state) 7647 { 7648 #if defined(KDTRACE_HOOKS) 7649 int old_state = stcb->asoc.state; 7650 #endif 7651 7652 KASSERT((new_state & ~SCTP_STATE_MASK) == 0, 7653 ("sctp_set_state: Can't set substate (new_state = %x)", 7654 new_state)); 7655 stcb->asoc.state = (stcb->asoc.state & ~SCTP_STATE_MASK) | new_state; 7656 if ((new_state == SCTP_STATE_SHUTDOWN_RECEIVED) || 7657 (new_state == SCTP_STATE_SHUTDOWN_SENT) || 7658 (new_state == SCTP_STATE_SHUTDOWN_ACK_SENT)) { 7659 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING); 7660 } 7661 #if defined(KDTRACE_HOOKS) 7662 if (((old_state & SCTP_STATE_MASK) != new_state) && 7663 !(((old_state & SCTP_STATE_MASK) == SCTP_STATE_EMPTY) && 7664 (new_state == SCTP_STATE_INUSE))) { 7665 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state); 7666 } 7667 #endif 7668 } 7669 7670 void 7671 sctp_add_substate(struct sctp_tcb *stcb, int substate) 7672 { 7673 #if defined(KDTRACE_HOOKS) 7674 int old_state = stcb->asoc.state; 7675 #endif 7676 7677 KASSERT((substate & SCTP_STATE_MASK) == 0, 7678 ("sctp_add_substate: Can't set state (substate = %x)", 7679 substate)); 7680 stcb->asoc.state |= substate; 7681 #if defined(KDTRACE_HOOKS) 7682 if (((substate & SCTP_STATE_ABOUT_TO_BE_FREED) && 7683 ((old_state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) || 7684 ((substate & SCTP_STATE_SHUTDOWN_PENDING) && 7685 ((old_state & SCTP_STATE_SHUTDOWN_PENDING) == 0))) { 7686 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state); 7687 } 7688 #endif 7689 } 7690