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