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sys/netinet/sctputil.c
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1 /*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * a) Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * b) Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the distribution. 15 * 16 * c) Neither the name of Cisco Systems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD: releng/10.3/sys/netinet/sctputil.c 296052 2016-02-25 18:46:06Z tuexen $"); 35 36 #include <netinet/sctp_os.h> 37 #include <netinet/sctp_pcb.h> 38 #include <netinet/sctputil.h> 39 #include <netinet/sctp_var.h> 40 #include <netinet/sctp_sysctl.h> 41 #ifdef INET6 42 #include <netinet6/sctp6_var.h> 43 #endif 44 #include <netinet/sctp_header.h> 45 #include <netinet/sctp_output.h> 46 #include <netinet/sctp_uio.h> 47 #include <netinet/sctp_timer.h> 48 #include <netinet/sctp_indata.h>/* for sctp_deliver_data() */ 49 #include <netinet/sctp_auth.h> 50 #include <netinet/sctp_asconf.h> 51 #include <netinet/sctp_bsd_addr.h> 52 #include <netinet/udp.h> 53 #include <netinet/udp_var.h> 54 #include <sys/proc.h> 55 56 57 #ifndef KTR_SCTP 58 #define KTR_SCTP KTR_SUBSYS 59 #endif 60 61 extern struct sctp_cc_functions sctp_cc_functions[]; 62 extern struct sctp_ss_functions sctp_ss_functions[]; 63 64 void 65 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr) 66 { 67 struct sctp_cwnd_log sctp_clog; 68 69 sctp_clog.x.sb.stcb = stcb; 70 sctp_clog.x.sb.so_sbcc = sb->sb_cc; 71 if (stcb) 72 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc; 73 else 74 sctp_clog.x.sb.stcb_sbcc = 0; 75 sctp_clog.x.sb.incr = incr; 76 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 77 SCTP_LOG_EVENT_SB, 78 from, 79 sctp_clog.x.misc.log1, 80 sctp_clog.x.misc.log2, 81 sctp_clog.x.misc.log3, 82 sctp_clog.x.misc.log4); 83 } 84 85 void 86 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc) 87 { 88 struct sctp_cwnd_log sctp_clog; 89 90 sctp_clog.x.close.inp = (void *)inp; 91 sctp_clog.x.close.sctp_flags = inp->sctp_flags; 92 if (stcb) { 93 sctp_clog.x.close.stcb = (void *)stcb; 94 sctp_clog.x.close.state = (uint16_t) stcb->asoc.state; 95 } else { 96 sctp_clog.x.close.stcb = 0; 97 sctp_clog.x.close.state = 0; 98 } 99 sctp_clog.x.close.loc = loc; 100 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 101 SCTP_LOG_EVENT_CLOSE, 102 0, 103 sctp_clog.x.misc.log1, 104 sctp_clog.x.misc.log2, 105 sctp_clog.x.misc.log3, 106 sctp_clog.x.misc.log4); 107 } 108 109 void 110 rto_logging(struct sctp_nets *net, int from) 111 { 112 struct sctp_cwnd_log sctp_clog; 113 114 memset(&sctp_clog, 0, sizeof(sctp_clog)); 115 sctp_clog.x.rto.net = (void *)net; 116 sctp_clog.x.rto.rtt = net->rtt / 1000; 117 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 118 SCTP_LOG_EVENT_RTT, 119 from, 120 sctp_clog.x.misc.log1, 121 sctp_clog.x.misc.log2, 122 sctp_clog.x.misc.log3, 123 sctp_clog.x.misc.log4); 124 } 125 126 void 127 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from) 128 { 129 struct sctp_cwnd_log sctp_clog; 130 131 sctp_clog.x.strlog.stcb = stcb; 132 sctp_clog.x.strlog.n_tsn = tsn; 133 sctp_clog.x.strlog.n_sseq = sseq; 134 sctp_clog.x.strlog.e_tsn = 0; 135 sctp_clog.x.strlog.e_sseq = 0; 136 sctp_clog.x.strlog.strm = stream; 137 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 138 SCTP_LOG_EVENT_STRM, 139 from, 140 sctp_clog.x.misc.log1, 141 sctp_clog.x.misc.log2, 142 sctp_clog.x.misc.log3, 143 sctp_clog.x.misc.log4); 144 } 145 146 void 147 sctp_log_nagle_event(struct sctp_tcb *stcb, int action) 148 { 149 struct sctp_cwnd_log sctp_clog; 150 151 sctp_clog.x.nagle.stcb = (void *)stcb; 152 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight; 153 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size; 154 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue; 155 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count; 156 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 157 SCTP_LOG_EVENT_NAGLE, 158 action, 159 sctp_clog.x.misc.log1, 160 sctp_clog.x.misc.log2, 161 sctp_clog.x.misc.log3, 162 sctp_clog.x.misc.log4); 163 } 164 165 void 166 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from) 167 { 168 struct sctp_cwnd_log sctp_clog; 169 170 sctp_clog.x.sack.cumack = cumack; 171 sctp_clog.x.sack.oldcumack = old_cumack; 172 sctp_clog.x.sack.tsn = tsn; 173 sctp_clog.x.sack.numGaps = gaps; 174 sctp_clog.x.sack.numDups = dups; 175 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 176 SCTP_LOG_EVENT_SACK, 177 from, 178 sctp_clog.x.misc.log1, 179 sctp_clog.x.misc.log2, 180 sctp_clog.x.misc.log3, 181 sctp_clog.x.misc.log4); 182 } 183 184 void 185 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from) 186 { 187 struct sctp_cwnd_log sctp_clog; 188 189 memset(&sctp_clog, 0, sizeof(sctp_clog)); 190 sctp_clog.x.map.base = map; 191 sctp_clog.x.map.cum = cum; 192 sctp_clog.x.map.high = high; 193 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 194 SCTP_LOG_EVENT_MAP, 195 from, 196 sctp_clog.x.misc.log1, 197 sctp_clog.x.misc.log2, 198 sctp_clog.x.misc.log3, 199 sctp_clog.x.misc.log4); 200 } 201 202 void 203 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from) 204 { 205 struct sctp_cwnd_log sctp_clog; 206 207 memset(&sctp_clog, 0, sizeof(sctp_clog)); 208 sctp_clog.x.fr.largest_tsn = biggest_tsn; 209 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn; 210 sctp_clog.x.fr.tsn = tsn; 211 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 212 SCTP_LOG_EVENT_FR, 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 } 219 220 #ifdef SCTP_MBUF_LOGGING 221 void 222 sctp_log_mb(struct mbuf *m, int from) 223 { 224 struct sctp_cwnd_log sctp_clog; 225 226 sctp_clog.x.mb.mp = m; 227 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m)); 228 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m)); 229 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0); 230 if (SCTP_BUF_IS_EXTENDED(m)) { 231 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m); 232 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m)); 233 } else { 234 sctp_clog.x.mb.ext = 0; 235 sctp_clog.x.mb.refcnt = 0; 236 } 237 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 238 SCTP_LOG_EVENT_MBUF, 239 from, 240 sctp_clog.x.misc.log1, 241 sctp_clog.x.misc.log2, 242 sctp_clog.x.misc.log3, 243 sctp_clog.x.misc.log4); 244 } 245 246 void 247 sctp_log_mbc(struct mbuf *m, int from) 248 { 249 struct mbuf *mat; 250 251 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) { 252 sctp_log_mb(mat, from); 253 } 254 } 255 256 #endif 257 258 void 259 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from) 260 { 261 struct sctp_cwnd_log sctp_clog; 262 263 if (control == NULL) { 264 SCTP_PRINTF("Gak log of NULL?\n"); 265 return; 266 } 267 sctp_clog.x.strlog.stcb = control->stcb; 268 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn; 269 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn; 270 sctp_clog.x.strlog.strm = control->sinfo_stream; 271 if (poschk != NULL) { 272 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn; 273 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn; 274 } else { 275 sctp_clog.x.strlog.e_tsn = 0; 276 sctp_clog.x.strlog.e_sseq = 0; 277 } 278 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 279 SCTP_LOG_EVENT_STRM, 280 from, 281 sctp_clog.x.misc.log1, 282 sctp_clog.x.misc.log2, 283 sctp_clog.x.misc.log3, 284 sctp_clog.x.misc.log4); 285 } 286 287 void 288 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from) 289 { 290 struct sctp_cwnd_log sctp_clog; 291 292 sctp_clog.x.cwnd.net = net; 293 if (stcb->asoc.send_queue_cnt > 255) 294 sctp_clog.x.cwnd.cnt_in_send = 255; 295 else 296 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; 297 if (stcb->asoc.stream_queue_cnt > 255) 298 sctp_clog.x.cwnd.cnt_in_str = 255; 299 else 300 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; 301 302 if (net) { 303 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd; 304 sctp_clog.x.cwnd.inflight = net->flight_size; 305 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack; 306 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack; 307 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack; 308 } 309 if (SCTP_CWNDLOG_PRESEND == from) { 310 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd; 311 } 312 sctp_clog.x.cwnd.cwnd_augment = augment; 313 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 314 SCTP_LOG_EVENT_CWND, 315 from, 316 sctp_clog.x.misc.log1, 317 sctp_clog.x.misc.log2, 318 sctp_clog.x.misc.log3, 319 sctp_clog.x.misc.log4); 320 } 321 322 void 323 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from) 324 { 325 struct sctp_cwnd_log sctp_clog; 326 327 memset(&sctp_clog, 0, sizeof(sctp_clog)); 328 if (inp) { 329 sctp_clog.x.lock.sock = (void *)inp->sctp_socket; 330 331 } else { 332 sctp_clog.x.lock.sock = (void *)NULL; 333 } 334 sctp_clog.x.lock.inp = (void *)inp; 335 if (stcb) { 336 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx); 337 } else { 338 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN; 339 } 340 if (inp) { 341 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx); 342 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx); 343 } else { 344 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN; 345 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN; 346 } 347 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx)); 348 if (inp && (inp->sctp_socket)) { 349 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx)); 350 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx)); 351 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx)); 352 } else { 353 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN; 354 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN; 355 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN; 356 } 357 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 358 SCTP_LOG_LOCK_EVENT, 359 from, 360 sctp_clog.x.misc.log1, 361 sctp_clog.x.misc.log2, 362 sctp_clog.x.misc.log3, 363 sctp_clog.x.misc.log4); 364 } 365 366 void 367 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from) 368 { 369 struct sctp_cwnd_log sctp_clog; 370 371 memset(&sctp_clog, 0, sizeof(sctp_clog)); 372 sctp_clog.x.cwnd.net = net; 373 sctp_clog.x.cwnd.cwnd_new_value = error; 374 sctp_clog.x.cwnd.inflight = net->flight_size; 375 sctp_clog.x.cwnd.cwnd_augment = burst; 376 if (stcb->asoc.send_queue_cnt > 255) 377 sctp_clog.x.cwnd.cnt_in_send = 255; 378 else 379 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; 380 if (stcb->asoc.stream_queue_cnt > 255) 381 sctp_clog.x.cwnd.cnt_in_str = 255; 382 else 383 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; 384 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 385 SCTP_LOG_EVENT_MAXBURST, 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 } 392 393 void 394 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead) 395 { 396 struct sctp_cwnd_log sctp_clog; 397 398 sctp_clog.x.rwnd.rwnd = peers_rwnd; 399 sctp_clog.x.rwnd.send_size = snd_size; 400 sctp_clog.x.rwnd.overhead = overhead; 401 sctp_clog.x.rwnd.new_rwnd = 0; 402 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 403 SCTP_LOG_EVENT_RWND, 404 from, 405 sctp_clog.x.misc.log1, 406 sctp_clog.x.misc.log2, 407 sctp_clog.x.misc.log3, 408 sctp_clog.x.misc.log4); 409 } 410 411 void 412 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval) 413 { 414 struct sctp_cwnd_log sctp_clog; 415 416 sctp_clog.x.rwnd.rwnd = peers_rwnd; 417 sctp_clog.x.rwnd.send_size = flight_size; 418 sctp_clog.x.rwnd.overhead = overhead; 419 sctp_clog.x.rwnd.new_rwnd = a_rwndval; 420 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 421 SCTP_LOG_EVENT_RWND, 422 from, 423 sctp_clog.x.misc.log1, 424 sctp_clog.x.misc.log2, 425 sctp_clog.x.misc.log3, 426 sctp_clog.x.misc.log4); 427 } 428 429 #ifdef SCTP_MBCNT_LOGGING 430 static void 431 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt) 432 { 433 struct sctp_cwnd_log sctp_clog; 434 435 sctp_clog.x.mbcnt.total_queue_size = total_oq; 436 sctp_clog.x.mbcnt.size_change = book; 437 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q; 438 sctp_clog.x.mbcnt.mbcnt_change = mbcnt; 439 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 440 SCTP_LOG_EVENT_MBCNT, 441 from, 442 sctp_clog.x.misc.log1, 443 sctp_clog.x.misc.log2, 444 sctp_clog.x.misc.log3, 445 sctp_clog.x.misc.log4); 446 } 447 448 #endif 449 450 void 451 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d) 452 { 453 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 454 SCTP_LOG_MISC_EVENT, 455 from, 456 a, b, c, d); 457 } 458 459 void 460 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from) 461 { 462 struct sctp_cwnd_log sctp_clog; 463 464 sctp_clog.x.wake.stcb = (void *)stcb; 465 sctp_clog.x.wake.wake_cnt = wake_cnt; 466 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count; 467 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt; 468 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt; 469 470 if (stcb->asoc.stream_queue_cnt < 0xff) 471 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt; 472 else 473 sctp_clog.x.wake.stream_qcnt = 0xff; 474 475 if (stcb->asoc.chunks_on_out_queue < 0xff) 476 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue; 477 else 478 sctp_clog.x.wake.chunks_on_oque = 0xff; 479 480 sctp_clog.x.wake.sctpflags = 0; 481 /* set in the defered mode stuff */ 482 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) 483 sctp_clog.x.wake.sctpflags |= 1; 484 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) 485 sctp_clog.x.wake.sctpflags |= 2; 486 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) 487 sctp_clog.x.wake.sctpflags |= 4; 488 /* what about the sb */ 489 if (stcb->sctp_socket) { 490 struct socket *so = stcb->sctp_socket; 491 492 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff)); 493 } else { 494 sctp_clog.x.wake.sbflags = 0xff; 495 } 496 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 497 SCTP_LOG_EVENT_WAKE, 498 from, 499 sctp_clog.x.misc.log1, 500 sctp_clog.x.misc.log2, 501 sctp_clog.x.misc.log3, 502 sctp_clog.x.misc.log4); 503 } 504 505 void 506 sctp_log_block(uint8_t from, struct sctp_association *asoc, int sendlen) 507 { 508 struct sctp_cwnd_log sctp_clog; 509 510 sctp_clog.x.blk.onsb = asoc->total_output_queue_size; 511 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt); 512 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd; 513 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt; 514 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue; 515 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024); 516 sctp_clog.x.blk.sndlen = sendlen; 517 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 518 SCTP_LOG_EVENT_BLOCK, 519 from, 520 sctp_clog.x.misc.log1, 521 sctp_clog.x.misc.log2, 522 sctp_clog.x.misc.log3, 523 sctp_clog.x.misc.log4); 524 } 525 526 int 527 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED) 528 { 529 /* May need to fix this if ktrdump does not work */ 530 return (0); 531 } 532 533 #ifdef SCTP_AUDITING_ENABLED 534 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2]; 535 static int sctp_audit_indx = 0; 536 537 static 538 void 539 sctp_print_audit_report(void) 540 { 541 int i; 542 int cnt; 543 544 cnt = 0; 545 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) { 546 if ((sctp_audit_data[i][0] == 0xe0) && 547 (sctp_audit_data[i][1] == 0x01)) { 548 cnt = 0; 549 SCTP_PRINTF("\n"); 550 } else if (sctp_audit_data[i][0] == 0xf0) { 551 cnt = 0; 552 SCTP_PRINTF("\n"); 553 } else if ((sctp_audit_data[i][0] == 0xc0) && 554 (sctp_audit_data[i][1] == 0x01)) { 555 SCTP_PRINTF("\n"); 556 cnt = 0; 557 } 558 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0], 559 (uint32_t) sctp_audit_data[i][1]); 560 cnt++; 561 if ((cnt % 14) == 0) 562 SCTP_PRINTF("\n"); 563 } 564 for (i = 0; i < sctp_audit_indx; i++) { 565 if ((sctp_audit_data[i][0] == 0xe0) && 566 (sctp_audit_data[i][1] == 0x01)) { 567 cnt = 0; 568 SCTP_PRINTF("\n"); 569 } else if (sctp_audit_data[i][0] == 0xf0) { 570 cnt = 0; 571 SCTP_PRINTF("\n"); 572 } else if ((sctp_audit_data[i][0] == 0xc0) && 573 (sctp_audit_data[i][1] == 0x01)) { 574 SCTP_PRINTF("\n"); 575 cnt = 0; 576 } 577 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0], 578 (uint32_t) sctp_audit_data[i][1]); 579 cnt++; 580 if ((cnt % 14) == 0) 581 SCTP_PRINTF("\n"); 582 } 583 SCTP_PRINTF("\n"); 584 } 585 586 void 587 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 588 struct sctp_nets *net) 589 { 590 int resend_cnt, tot_out, rep, tot_book_cnt; 591 struct sctp_nets *lnet; 592 struct sctp_tmit_chunk *chk; 593 594 sctp_audit_data[sctp_audit_indx][0] = 0xAA; 595 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from; 596 sctp_audit_indx++; 597 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 598 sctp_audit_indx = 0; 599 } 600 if (inp == NULL) { 601 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 602 sctp_audit_data[sctp_audit_indx][1] = 0x01; 603 sctp_audit_indx++; 604 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 605 sctp_audit_indx = 0; 606 } 607 return; 608 } 609 if (stcb == NULL) { 610 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 611 sctp_audit_data[sctp_audit_indx][1] = 0x02; 612 sctp_audit_indx++; 613 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 614 sctp_audit_indx = 0; 615 } 616 return; 617 } 618 sctp_audit_data[sctp_audit_indx][0] = 0xA1; 619 sctp_audit_data[sctp_audit_indx][1] = 620 (0x000000ff & stcb->asoc.sent_queue_retran_cnt); 621 sctp_audit_indx++; 622 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 623 sctp_audit_indx = 0; 624 } 625 rep = 0; 626 tot_book_cnt = 0; 627 resend_cnt = tot_out = 0; 628 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 629 if (chk->sent == SCTP_DATAGRAM_RESEND) { 630 resend_cnt++; 631 } else if (chk->sent < SCTP_DATAGRAM_RESEND) { 632 tot_out += chk->book_size; 633 tot_book_cnt++; 634 } 635 } 636 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) { 637 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 638 sctp_audit_data[sctp_audit_indx][1] = 0xA1; 639 sctp_audit_indx++; 640 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 641 sctp_audit_indx = 0; 642 } 643 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n", 644 resend_cnt, stcb->asoc.sent_queue_retran_cnt); 645 rep = 1; 646 stcb->asoc.sent_queue_retran_cnt = resend_cnt; 647 sctp_audit_data[sctp_audit_indx][0] = 0xA2; 648 sctp_audit_data[sctp_audit_indx][1] = 649 (0x000000ff & stcb->asoc.sent_queue_retran_cnt); 650 sctp_audit_indx++; 651 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 652 sctp_audit_indx = 0; 653 } 654 } 655 if (tot_out != stcb->asoc.total_flight) { 656 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 657 sctp_audit_data[sctp_audit_indx][1] = 0xA2; 658 sctp_audit_indx++; 659 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 660 sctp_audit_indx = 0; 661 } 662 rep = 1; 663 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out, 664 (int)stcb->asoc.total_flight); 665 stcb->asoc.total_flight = tot_out; 666 } 667 if (tot_book_cnt != stcb->asoc.total_flight_count) { 668 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 669 sctp_audit_data[sctp_audit_indx][1] = 0xA5; 670 sctp_audit_indx++; 671 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 672 sctp_audit_indx = 0; 673 } 674 rep = 1; 675 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt); 676 677 stcb->asoc.total_flight_count = tot_book_cnt; 678 } 679 tot_out = 0; 680 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 681 tot_out += lnet->flight_size; 682 } 683 if (tot_out != stcb->asoc.total_flight) { 684 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 685 sctp_audit_data[sctp_audit_indx][1] = 0xA3; 686 sctp_audit_indx++; 687 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 688 sctp_audit_indx = 0; 689 } 690 rep = 1; 691 SCTP_PRINTF("real flight:%d net total was %d\n", 692 stcb->asoc.total_flight, tot_out); 693 /* now corrective action */ 694 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 695 696 tot_out = 0; 697 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 698 if ((chk->whoTo == lnet) && 699 (chk->sent < SCTP_DATAGRAM_RESEND)) { 700 tot_out += chk->book_size; 701 } 702 } 703 if (lnet->flight_size != tot_out) { 704 SCTP_PRINTF("net:%p flight was %d corrected to %d\n", 705 (void *)lnet, lnet->flight_size, 706 tot_out); 707 lnet->flight_size = tot_out; 708 } 709 } 710 } 711 if (rep) { 712 sctp_print_audit_report(); 713 } 714 } 715 716 void 717 sctp_audit_log(uint8_t ev, uint8_t fd) 718 { 719 720 sctp_audit_data[sctp_audit_indx][0] = ev; 721 sctp_audit_data[sctp_audit_indx][1] = fd; 722 sctp_audit_indx++; 723 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 724 sctp_audit_indx = 0; 725 } 726 } 727 728 #endif 729 730 /* 731 * sctp_stop_timers_for_shutdown() should be called 732 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT 733 * state to make sure that all timers are stopped. 734 */ 735 void 736 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb) 737 { 738 struct sctp_association *asoc; 739 struct sctp_nets *net; 740 741 asoc = &stcb->asoc; 742 743 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer); 744 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer); 745 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer); 746 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer); 747 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer); 748 TAILQ_FOREACH(net, &asoc->nets, sctp_next) { 749 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer); 750 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer); 751 } 752 } 753 754 /* 755 * a list of sizes based on typical mtu's, used only if next hop size not 756 * returned. 757 */ 758 static uint32_t sctp_mtu_sizes[] = { 759 68, 760 296, 761 508, 762 512, 763 544, 764 576, 765 1006, 766 1492, 767 1500, 768 1536, 769 2002, 770 2048, 771 4352, 772 4464, 773 8166, 774 17914, 775 32000, 776 65535 777 }; 778 779 /* 780 * Return the largest MTU smaller than val. If there is no 781 * entry, just return val. 782 */ 783 uint32_t 784 sctp_get_prev_mtu(uint32_t val) 785 { 786 uint32_t i; 787 788 if (val <= sctp_mtu_sizes[0]) { 789 return (val); 790 } 791 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { 792 if (val <= sctp_mtu_sizes[i]) { 793 break; 794 } 795 } 796 return (sctp_mtu_sizes[i - 1]); 797 } 798 799 /* 800 * Return the smallest MTU larger than val. If there is no 801 * entry, just return val. 802 */ 803 uint32_t 804 sctp_get_next_mtu(uint32_t val) 805 { 806 /* select another MTU that is just bigger than this one */ 807 uint32_t i; 808 809 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { 810 if (val < sctp_mtu_sizes[i]) { 811 return (sctp_mtu_sizes[i]); 812 } 813 } 814 return (val); 815 } 816 817 void 818 sctp_fill_random_store(struct sctp_pcb *m) 819 { 820 /* 821 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and 822 * our counter. The result becomes our good random numbers and we 823 * then setup to give these out. Note that we do no locking to 824 * protect this. This is ok, since if competing folks call this we 825 * will get more gobbled gook in the random store which is what we 826 * want. There is a danger that two guys will use the same random 827 * numbers, but thats ok too since that is random as well :-> 828 */ 829 m->store_at = 0; 830 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers, 831 sizeof(m->random_numbers), (uint8_t *) & m->random_counter, 832 sizeof(m->random_counter), (uint8_t *) m->random_store); 833 m->random_counter++; 834 } 835 836 uint32_t 837 sctp_select_initial_TSN(struct sctp_pcb *inp) 838 { 839 /* 840 * A true implementation should use random selection process to get 841 * the initial stream sequence number, using RFC1750 as a good 842 * guideline 843 */ 844 uint32_t x, *xp; 845 uint8_t *p; 846 int store_at, new_store; 847 848 if (inp->initial_sequence_debug != 0) { 849 uint32_t ret; 850 851 ret = inp->initial_sequence_debug; 852 inp->initial_sequence_debug++; 853 return (ret); 854 } 855 retry: 856 store_at = inp->store_at; 857 new_store = store_at + sizeof(uint32_t); 858 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) { 859 new_store = 0; 860 } 861 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) { 862 goto retry; 863 } 864 if (new_store == 0) { 865 /* Refill the random store */ 866 sctp_fill_random_store(inp); 867 } 868 p = &inp->random_store[store_at]; 869 xp = (uint32_t *) p; 870 x = *xp; 871 return (x); 872 } 873 874 uint32_t 875 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check) 876 { 877 uint32_t x; 878 struct timeval now; 879 880 if (check) { 881 (void)SCTP_GETTIME_TIMEVAL(&now); 882 } 883 for (;;) { 884 x = sctp_select_initial_TSN(&inp->sctp_ep); 885 if (x == 0) { 886 /* we never use 0 */ 887 continue; 888 } 889 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) { 890 break; 891 } 892 } 893 return (x); 894 } 895 896 int32_t 897 sctp_map_assoc_state(int kernel_state) 898 { 899 int32_t user_state; 900 901 if (kernel_state & SCTP_STATE_WAS_ABORTED) { 902 user_state = SCTP_CLOSED; 903 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) { 904 user_state = SCTP_SHUTDOWN_PENDING; 905 } else { 906 switch (kernel_state & SCTP_STATE_MASK) { 907 case SCTP_STATE_EMPTY: 908 user_state = SCTP_CLOSED; 909 break; 910 case SCTP_STATE_INUSE: 911 user_state = SCTP_CLOSED; 912 break; 913 case SCTP_STATE_COOKIE_WAIT: 914 user_state = SCTP_COOKIE_WAIT; 915 break; 916 case SCTP_STATE_COOKIE_ECHOED: 917 user_state = SCTP_COOKIE_ECHOED; 918 break; 919 case SCTP_STATE_OPEN: 920 user_state = SCTP_ESTABLISHED; 921 break; 922 case SCTP_STATE_SHUTDOWN_SENT: 923 user_state = SCTP_SHUTDOWN_SENT; 924 break; 925 case SCTP_STATE_SHUTDOWN_RECEIVED: 926 user_state = SCTP_SHUTDOWN_RECEIVED; 927 break; 928 case SCTP_STATE_SHUTDOWN_ACK_SENT: 929 user_state = SCTP_SHUTDOWN_ACK_SENT; 930 break; 931 default: 932 user_state = SCTP_CLOSED; 933 break; 934 } 935 } 936 return (user_state); 937 } 938 939 int 940 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 941 uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms) 942 { 943 struct sctp_association *asoc; 944 945 /* 946 * Anything set to zero is taken care of by the allocation routine's 947 * bzero 948 */ 949 950 /* 951 * Up front select what scoping to apply on addresses I tell my peer 952 * Not sure what to do with these right now, we will need to come up 953 * with a way to set them. We may need to pass them through from the 954 * caller in the sctp_aloc_assoc() function. 955 */ 956 int i; 957 958 #if defined(SCTP_DETAILED_STR_STATS) 959 int j; 960 961 #endif 962 963 asoc = &stcb->asoc; 964 /* init all variables to a known value. */ 965 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE); 966 asoc->max_burst = inp->sctp_ep.max_burst; 967 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst; 968 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]); 969 asoc->cookie_life = inp->sctp_ep.def_cookie_life; 970 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off; 971 asoc->ecn_supported = inp->ecn_supported; 972 asoc->prsctp_supported = inp->prsctp_supported; 973 asoc->auth_supported = inp->auth_supported; 974 asoc->asconf_supported = inp->asconf_supported; 975 asoc->reconfig_supported = inp->reconfig_supported; 976 asoc->nrsack_supported = inp->nrsack_supported; 977 asoc->pktdrop_supported = inp->pktdrop_supported; 978 asoc->sctp_cmt_pf = (uint8_t) 0; 979 asoc->sctp_frag_point = inp->sctp_frag_point; 980 asoc->sctp_features = inp->sctp_features; 981 asoc->default_dscp = inp->sctp_ep.default_dscp; 982 asoc->max_cwnd = inp->max_cwnd; 983 #ifdef INET6 984 if (inp->sctp_ep.default_flowlabel) { 985 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel; 986 } else { 987 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) { 988 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep); 989 asoc->default_flowlabel &= 0x000fffff; 990 asoc->default_flowlabel |= 0x80000000; 991 } else { 992 asoc->default_flowlabel = 0; 993 } 994 } 995 #endif 996 asoc->sb_send_resv = 0; 997 if (override_tag) { 998 asoc->my_vtag = override_tag; 999 } else { 1000 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1); 1001 } 1002 /* Get the nonce tags */ 1003 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0); 1004 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0); 1005 asoc->vrf_id = vrf_id; 1006 1007 #ifdef SCTP_ASOCLOG_OF_TSNS 1008 asoc->tsn_in_at = 0; 1009 asoc->tsn_out_at = 0; 1010 asoc->tsn_in_wrapped = 0; 1011 asoc->tsn_out_wrapped = 0; 1012 asoc->cumack_log_at = 0; 1013 asoc->cumack_log_atsnt = 0; 1014 #endif 1015 #ifdef SCTP_FS_SPEC_LOG 1016 asoc->fs_index = 0; 1017 #endif 1018 asoc->refcnt = 0; 1019 asoc->assoc_up_sent = 0; 1020 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq = 1021 sctp_select_initial_TSN(&inp->sctp_ep); 1022 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1; 1023 /* we are optimisitic here */ 1024 asoc->peer_supports_nat = 0; 1025 asoc->sent_queue_retran_cnt = 0; 1026 1027 /* for CMT */ 1028 asoc->last_net_cmt_send_started = NULL; 1029 1030 /* This will need to be adjusted */ 1031 asoc->last_acked_seq = asoc->init_seq_number - 1; 1032 asoc->advanced_peer_ack_point = asoc->last_acked_seq; 1033 asoc->asconf_seq_in = asoc->last_acked_seq; 1034 1035 /* here we are different, we hold the next one we expect */ 1036 asoc->str_reset_seq_in = asoc->last_acked_seq + 1; 1037 1038 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max; 1039 asoc->initial_rto = inp->sctp_ep.initial_rto; 1040 1041 asoc->max_init_times = inp->sctp_ep.max_init_times; 1042 asoc->max_send_times = inp->sctp_ep.max_send_times; 1043 asoc->def_net_failure = inp->sctp_ep.def_net_failure; 1044 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold; 1045 asoc->free_chunk_cnt = 0; 1046 1047 asoc->iam_blocking = 0; 1048 asoc->context = inp->sctp_context; 1049 asoc->local_strreset_support = inp->local_strreset_support; 1050 asoc->def_send = inp->def_send; 1051 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); 1052 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq; 1053 asoc->pr_sctp_cnt = 0; 1054 asoc->total_output_queue_size = 0; 1055 1056 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 1057 asoc->scope.ipv6_addr_legal = 1; 1058 if (SCTP_IPV6_V6ONLY(inp) == 0) { 1059 asoc->scope.ipv4_addr_legal = 1; 1060 } else { 1061 asoc->scope.ipv4_addr_legal = 0; 1062 } 1063 } else { 1064 asoc->scope.ipv6_addr_legal = 0; 1065 asoc->scope.ipv4_addr_legal = 1; 1066 } 1067 1068 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND); 1069 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket); 1070 1071 asoc->smallest_mtu = inp->sctp_frag_point; 1072 asoc->minrto = inp->sctp_ep.sctp_minrto; 1073 asoc->maxrto = inp->sctp_ep.sctp_maxrto; 1074 1075 asoc->locked_on_sending = NULL; 1076 asoc->stream_locked_on = 0; 1077 asoc->ecn_echo_cnt_onq = 0; 1078 asoc->stream_locked = 0; 1079 1080 asoc->send_sack = 1; 1081 1082 LIST_INIT(&asoc->sctp_restricted_addrs); 1083 1084 TAILQ_INIT(&asoc->nets); 1085 TAILQ_INIT(&asoc->pending_reply_queue); 1086 TAILQ_INIT(&asoc->asconf_ack_sent); 1087 /* Setup to fill the hb random cache at first HB */ 1088 asoc->hb_random_idx = 4; 1089 1090 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time; 1091 1092 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module; 1093 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module]; 1094 1095 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module; 1096 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module]; 1097 1098 /* 1099 * Now the stream parameters, here we allocate space for all streams 1100 * that we request by default. 1101 */ 1102 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams = 1103 o_strms; 1104 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *, 1105 asoc->streamoutcnt * sizeof(struct sctp_stream_out), 1106 SCTP_M_STRMO); 1107 if (asoc->strmout == NULL) { 1108 /* big trouble no memory */ 1109 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1110 return (ENOMEM); 1111 } 1112 for (i = 0; i < asoc->streamoutcnt; i++) { 1113 /* 1114 * inbound side must be set to 0xffff, also NOTE when we get 1115 * the INIT-ACK back (for INIT sender) we MUST reduce the 1116 * count (streamoutcnt) but first check if we sent to any of 1117 * the upper streams that were dropped (if some were). Those 1118 * that were dropped must be notified to the upper layer as 1119 * failed to send. 1120 */ 1121 asoc->strmout[i].next_sequence_send = 0x0; 1122 TAILQ_INIT(&asoc->strmout[i].outqueue); 1123 asoc->strmout[i].chunks_on_queues = 0; 1124 #if defined(SCTP_DETAILED_STR_STATS) 1125 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) { 1126 asoc->strmout[i].abandoned_sent[j] = 0; 1127 asoc->strmout[i].abandoned_unsent[j] = 0; 1128 } 1129 #else 1130 asoc->strmout[i].abandoned_sent[0] = 0; 1131 asoc->strmout[i].abandoned_unsent[0] = 0; 1132 #endif 1133 asoc->strmout[i].stream_no = i; 1134 asoc->strmout[i].last_msg_incomplete = 0; 1135 asoc->strmout[i].state = SCTP_STREAM_OPENING; 1136 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL); 1137 } 1138 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0); 1139 1140 /* Now the mapping array */ 1141 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY; 1142 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size, 1143 SCTP_M_MAP); 1144 if (asoc->mapping_array == NULL) { 1145 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1146 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1147 return (ENOMEM); 1148 } 1149 memset(asoc->mapping_array, 0, asoc->mapping_array_size); 1150 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size, 1151 SCTP_M_MAP); 1152 if (asoc->nr_mapping_array == NULL) { 1153 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1154 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1155 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1156 return (ENOMEM); 1157 } 1158 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size); 1159 1160 /* Now the init of the other outqueues */ 1161 TAILQ_INIT(&asoc->free_chunks); 1162 TAILQ_INIT(&asoc->control_send_queue); 1163 TAILQ_INIT(&asoc->asconf_send_queue); 1164 TAILQ_INIT(&asoc->send_queue); 1165 TAILQ_INIT(&asoc->sent_queue); 1166 TAILQ_INIT(&asoc->reasmqueue); 1167 TAILQ_INIT(&asoc->resetHead); 1168 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome; 1169 TAILQ_INIT(&asoc->asconf_queue); 1170 /* authentication fields */ 1171 asoc->authinfo.random = NULL; 1172 asoc->authinfo.active_keyid = 0; 1173 asoc->authinfo.assoc_key = NULL; 1174 asoc->authinfo.assoc_keyid = 0; 1175 asoc->authinfo.recv_key = NULL; 1176 asoc->authinfo.recv_keyid = 0; 1177 LIST_INIT(&asoc->shared_keys); 1178 asoc->marked_retrans = 0; 1179 asoc->port = inp->sctp_ep.port; 1180 asoc->timoinit = 0; 1181 asoc->timodata = 0; 1182 asoc->timosack = 0; 1183 asoc->timoshutdown = 0; 1184 asoc->timoheartbeat = 0; 1185 asoc->timocookie = 0; 1186 asoc->timoshutdownack = 0; 1187 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time); 1188 asoc->discontinuity_time = asoc->start_time; 1189 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) { 1190 asoc->abandoned_unsent[i] = 0; 1191 asoc->abandoned_sent[i] = 0; 1192 } 1193 /* 1194 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and 1195 * freed later when the association is freed. 1196 */ 1197 return (0); 1198 } 1199 1200 void 1201 sctp_print_mapping_array(struct sctp_association *asoc) 1202 { 1203 unsigned int i, limit; 1204 1205 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n", 1206 asoc->mapping_array_size, 1207 asoc->mapping_array_base_tsn, 1208 asoc->cumulative_tsn, 1209 asoc->highest_tsn_inside_map, 1210 asoc->highest_tsn_inside_nr_map); 1211 for (limit = asoc->mapping_array_size; limit > 1; limit--) { 1212 if (asoc->mapping_array[limit - 1] != 0) { 1213 break; 1214 } 1215 } 1216 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); 1217 for (i = 0; i < limit; i++) { 1218 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); 1219 } 1220 if (limit % 16) 1221 SCTP_PRINTF("\n"); 1222 for (limit = asoc->mapping_array_size; limit > 1; limit--) { 1223 if (asoc->nr_mapping_array[limit - 1]) { 1224 break; 1225 } 1226 } 1227 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); 1228 for (i = 0; i < limit; i++) { 1229 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); 1230 } 1231 if (limit % 16) 1232 SCTP_PRINTF("\n"); 1233 } 1234 1235 int 1236 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed) 1237 { 1238 /* mapping array needs to grow */ 1239 uint8_t *new_array1, *new_array2; 1240 uint32_t new_size; 1241 1242 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR); 1243 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP); 1244 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP); 1245 if ((new_array1 == NULL) || (new_array2 == NULL)) { 1246 /* can't get more, forget it */ 1247 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size); 1248 if (new_array1) { 1249 SCTP_FREE(new_array1, SCTP_M_MAP); 1250 } 1251 if (new_array2) { 1252 SCTP_FREE(new_array2, SCTP_M_MAP); 1253 } 1254 return (-1); 1255 } 1256 memset(new_array1, 0, new_size); 1257 memset(new_array2, 0, new_size); 1258 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size); 1259 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size); 1260 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1261 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP); 1262 asoc->mapping_array = new_array1; 1263 asoc->nr_mapping_array = new_array2; 1264 asoc->mapping_array_size = new_size; 1265 return (0); 1266 } 1267 1268 1269 static void 1270 sctp_iterator_work(struct sctp_iterator *it) 1271 { 1272 int iteration_count = 0; 1273 int inp_skip = 0; 1274 int first_in = 1; 1275 struct sctp_inpcb *tinp; 1276 1277 SCTP_INP_INFO_RLOCK(); 1278 SCTP_ITERATOR_LOCK(); 1279 if (it->inp) { 1280 SCTP_INP_RLOCK(it->inp); 1281 SCTP_INP_DECR_REF(it->inp); 1282 } 1283 if (it->inp == NULL) { 1284 /* iterator is complete */ 1285 done_with_iterator: 1286 SCTP_ITERATOR_UNLOCK(); 1287 SCTP_INP_INFO_RUNLOCK(); 1288 if (it->function_atend != NULL) { 1289 (*it->function_atend) (it->pointer, it->val); 1290 } 1291 SCTP_FREE(it, SCTP_M_ITER); 1292 return; 1293 } 1294 select_a_new_ep: 1295 if (first_in) { 1296 first_in = 0; 1297 } else { 1298 SCTP_INP_RLOCK(it->inp); 1299 } 1300 while (((it->pcb_flags) && 1301 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) || 1302 ((it->pcb_features) && 1303 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) { 1304 /* endpoint flags or features don't match, so keep looking */ 1305 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1306 SCTP_INP_RUNLOCK(it->inp); 1307 goto done_with_iterator; 1308 } 1309 tinp = it->inp; 1310 it->inp = LIST_NEXT(it->inp, sctp_list); 1311 SCTP_INP_RUNLOCK(tinp); 1312 if (it->inp == NULL) { 1313 goto done_with_iterator; 1314 } 1315 SCTP_INP_RLOCK(it->inp); 1316 } 1317 /* now go through each assoc which is in the desired state */ 1318 if (it->done_current_ep == 0) { 1319 if (it->function_inp != NULL) 1320 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val); 1321 it->done_current_ep = 1; 1322 } 1323 if (it->stcb == NULL) { 1324 /* run the per instance function */ 1325 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list); 1326 } 1327 if ((inp_skip) || it->stcb == NULL) { 1328 if (it->function_inp_end != NULL) { 1329 inp_skip = (*it->function_inp_end) (it->inp, 1330 it->pointer, 1331 it->val); 1332 } 1333 SCTP_INP_RUNLOCK(it->inp); 1334 goto no_stcb; 1335 } 1336 while (it->stcb) { 1337 SCTP_TCB_LOCK(it->stcb); 1338 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) { 1339 /* not in the right state... keep looking */ 1340 SCTP_TCB_UNLOCK(it->stcb); 1341 goto next_assoc; 1342 } 1343 /* see if we have limited out the iterator loop */ 1344 iteration_count++; 1345 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) { 1346 /* Pause to let others grab the lock */ 1347 atomic_add_int(&it->stcb->asoc.refcnt, 1); 1348 SCTP_TCB_UNLOCK(it->stcb); 1349 SCTP_INP_INCR_REF(it->inp); 1350 SCTP_INP_RUNLOCK(it->inp); 1351 SCTP_ITERATOR_UNLOCK(); 1352 SCTP_INP_INFO_RUNLOCK(); 1353 SCTP_INP_INFO_RLOCK(); 1354 SCTP_ITERATOR_LOCK(); 1355 if (sctp_it_ctl.iterator_flags) { 1356 /* We won't be staying here */ 1357 SCTP_INP_DECR_REF(it->inp); 1358 atomic_add_int(&it->stcb->asoc.refcnt, -1); 1359 if (sctp_it_ctl.iterator_flags & 1360 SCTP_ITERATOR_STOP_CUR_IT) { 1361 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT; 1362 goto done_with_iterator; 1363 } 1364 if (sctp_it_ctl.iterator_flags & 1365 SCTP_ITERATOR_STOP_CUR_INP) { 1366 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP; 1367 goto no_stcb; 1368 } 1369 /* If we reach here huh? */ 1370 SCTP_PRINTF("Unknown it ctl flag %x\n", 1371 sctp_it_ctl.iterator_flags); 1372 sctp_it_ctl.iterator_flags = 0; 1373 } 1374 SCTP_INP_RLOCK(it->inp); 1375 SCTP_INP_DECR_REF(it->inp); 1376 SCTP_TCB_LOCK(it->stcb); 1377 atomic_add_int(&it->stcb->asoc.refcnt, -1); 1378 iteration_count = 0; 1379 } 1380 /* run function on this one */ 1381 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val); 1382 1383 /* 1384 * we lie here, it really needs to have its own type but 1385 * first I must verify that this won't effect things :-0 1386 */ 1387 if (it->no_chunk_output == 0) 1388 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1389 1390 SCTP_TCB_UNLOCK(it->stcb); 1391 next_assoc: 1392 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist); 1393 if (it->stcb == NULL) { 1394 /* Run last function */ 1395 if (it->function_inp_end != NULL) { 1396 inp_skip = (*it->function_inp_end) (it->inp, 1397 it->pointer, 1398 it->val); 1399 } 1400 } 1401 } 1402 SCTP_INP_RUNLOCK(it->inp); 1403 no_stcb: 1404 /* done with all assocs on this endpoint, move on to next endpoint */ 1405 it->done_current_ep = 0; 1406 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1407 it->inp = NULL; 1408 } else { 1409 it->inp = LIST_NEXT(it->inp, sctp_list); 1410 } 1411 if (it->inp == NULL) { 1412 goto done_with_iterator; 1413 } 1414 goto select_a_new_ep; 1415 } 1416 1417 void 1418 sctp_iterator_worker(void) 1419 { 1420 struct sctp_iterator *it, *nit; 1421 1422 /* This function is called with the WQ lock in place */ 1423 1424 sctp_it_ctl.iterator_running = 1; 1425 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) { 1426 sctp_it_ctl.cur_it = it; 1427 /* now lets work on this one */ 1428 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); 1429 SCTP_IPI_ITERATOR_WQ_UNLOCK(); 1430 CURVNET_SET(it->vn); 1431 sctp_iterator_work(it); 1432 sctp_it_ctl.cur_it = NULL; 1433 CURVNET_RESTORE(); 1434 SCTP_IPI_ITERATOR_WQ_LOCK(); 1435 /* sa_ignore FREED_MEMORY */ 1436 } 1437 sctp_it_ctl.iterator_running = 0; 1438 return; 1439 } 1440 1441 1442 static void 1443 sctp_handle_addr_wq(void) 1444 { 1445 /* deal with the ADDR wq from the rtsock calls */ 1446 struct sctp_laddr *wi, *nwi; 1447 struct sctp_asconf_iterator *asc; 1448 1449 SCTP_MALLOC(asc, struct sctp_asconf_iterator *, 1450 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT); 1451 if (asc == NULL) { 1452 /* Try later, no memory */ 1453 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, 1454 (struct sctp_inpcb *)NULL, 1455 (struct sctp_tcb *)NULL, 1456 (struct sctp_nets *)NULL); 1457 return; 1458 } 1459 LIST_INIT(&asc->list_of_work); 1460 asc->cnt = 0; 1461 1462 SCTP_WQ_ADDR_LOCK(); 1463 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) { 1464 LIST_REMOVE(wi, sctp_nxt_addr); 1465 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr); 1466 asc->cnt++; 1467 } 1468 SCTP_WQ_ADDR_UNLOCK(); 1469 1470 if (asc->cnt == 0) { 1471 SCTP_FREE(asc, SCTP_M_ASC_IT); 1472 } else { 1473 int ret; 1474 1475 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep, 1476 sctp_asconf_iterator_stcb, 1477 NULL, /* No ep end for boundall */ 1478 SCTP_PCB_FLAGS_BOUNDALL, 1479 SCTP_PCB_ANY_FEATURES, 1480 SCTP_ASOC_ANY_STATE, 1481 (void *)asc, 0, 1482 sctp_asconf_iterator_end, NULL, 0); 1483 if (ret) { 1484 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n"); 1485 /* 1486 * Freeing if we are stopping or put back on the 1487 * addr_wq. 1488 */ 1489 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) { 1490 sctp_asconf_iterator_end(asc, 0); 1491 } else { 1492 SCTP_WQ_ADDR_LOCK(); 1493 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) { 1494 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); 1495 } 1496 SCTP_WQ_ADDR_UNLOCK(); 1497 SCTP_FREE(asc, SCTP_M_ASC_IT); 1498 } 1499 } 1500 } 1501 } 1502 1503 void 1504 sctp_timeout_handler(void *t) 1505 { 1506 struct sctp_inpcb *inp; 1507 struct sctp_tcb *stcb; 1508 struct sctp_nets *net; 1509 struct sctp_timer *tmr; 1510 struct mbuf *op_err; 1511 1512 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1513 struct socket *so; 1514 1515 #endif 1516 int did_output; 1517 int type; 1518 1519 tmr = (struct sctp_timer *)t; 1520 inp = (struct sctp_inpcb *)tmr->ep; 1521 stcb = (struct sctp_tcb *)tmr->tcb; 1522 net = (struct sctp_nets *)tmr->net; 1523 CURVNET_SET((struct vnet *)tmr->vnet); 1524 did_output = 1; 1525 1526 #ifdef SCTP_AUDITING_ENABLED 1527 sctp_audit_log(0xF0, (uint8_t) tmr->type); 1528 sctp_auditing(3, inp, stcb, net); 1529 #endif 1530 1531 /* sanity checks... */ 1532 if (tmr->self != (void *)tmr) { 1533 /* 1534 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n", 1535 * (void *)tmr); 1536 */ 1537 CURVNET_RESTORE(); 1538 return; 1539 } 1540 tmr->stopped_from = 0xa001; 1541 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) { 1542 /* 1543 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n", 1544 * tmr->type); 1545 */ 1546 CURVNET_RESTORE(); 1547 return; 1548 } 1549 tmr->stopped_from = 0xa002; 1550 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) { 1551 CURVNET_RESTORE(); 1552 return; 1553 } 1554 /* if this is an iterator timeout, get the struct and clear inp */ 1555 tmr->stopped_from = 0xa003; 1556 if (inp) { 1557 SCTP_INP_INCR_REF(inp); 1558 if ((inp->sctp_socket == NULL) && 1559 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) && 1560 (tmr->type != SCTP_TIMER_TYPE_INIT) && 1561 (tmr->type != SCTP_TIMER_TYPE_SEND) && 1562 (tmr->type != SCTP_TIMER_TYPE_RECV) && 1563 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) && 1564 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) && 1565 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) && 1566 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) && 1567 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL)) 1568 ) { 1569 SCTP_INP_DECR_REF(inp); 1570 CURVNET_RESTORE(); 1571 return; 1572 } 1573 } 1574 tmr->stopped_from = 0xa004; 1575 if (stcb) { 1576 atomic_add_int(&stcb->asoc.refcnt, 1); 1577 if (stcb->asoc.state == 0) { 1578 atomic_add_int(&stcb->asoc.refcnt, -1); 1579 if (inp) { 1580 SCTP_INP_DECR_REF(inp); 1581 } 1582 CURVNET_RESTORE(); 1583 return; 1584 } 1585 } 1586 type = tmr->type; 1587 tmr->stopped_from = 0xa005; 1588 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type); 1589 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1590 if (inp) { 1591 SCTP_INP_DECR_REF(inp); 1592 } 1593 if (stcb) { 1594 atomic_add_int(&stcb->asoc.refcnt, -1); 1595 } 1596 CURVNET_RESTORE(); 1597 return; 1598 } 1599 tmr->stopped_from = 0xa006; 1600 1601 if (stcb) { 1602 SCTP_TCB_LOCK(stcb); 1603 atomic_add_int(&stcb->asoc.refcnt, -1); 1604 if ((type != SCTP_TIMER_TYPE_ASOCKILL) && 1605 ((stcb->asoc.state == 0) || 1606 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) { 1607 SCTP_TCB_UNLOCK(stcb); 1608 if (inp) { 1609 SCTP_INP_DECR_REF(inp); 1610 } 1611 CURVNET_RESTORE(); 1612 return; 1613 } 1614 } 1615 /* record in stopped what t-o occured */ 1616 tmr->stopped_from = type; 1617 1618 /* mark as being serviced now */ 1619 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 1620 /* 1621 * Callout has been rescheduled. 1622 */ 1623 goto get_out; 1624 } 1625 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1626 /* 1627 * Not active, so no action. 1628 */ 1629 goto get_out; 1630 } 1631 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer); 1632 1633 /* call the handler for the appropriate timer type */ 1634 switch (type) { 1635 case SCTP_TIMER_TYPE_ZERO_COPY: 1636 if (inp == NULL) { 1637 break; 1638 } 1639 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 1640 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 1641 } 1642 break; 1643 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 1644 if (inp == NULL) { 1645 break; 1646 } 1647 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 1648 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket); 1649 } 1650 break; 1651 case SCTP_TIMER_TYPE_ADDR_WQ: 1652 sctp_handle_addr_wq(); 1653 break; 1654 case SCTP_TIMER_TYPE_SEND: 1655 if ((stcb == NULL) || (inp == NULL)) { 1656 break; 1657 } 1658 SCTP_STAT_INCR(sctps_timodata); 1659 stcb->asoc.timodata++; 1660 stcb->asoc.num_send_timers_up--; 1661 if (stcb->asoc.num_send_timers_up < 0) { 1662 stcb->asoc.num_send_timers_up = 0; 1663 } 1664 SCTP_TCB_LOCK_ASSERT(stcb); 1665 if (sctp_t3rxt_timer(inp, stcb, net)) { 1666 /* no need to unlock on tcb its gone */ 1667 1668 goto out_decr; 1669 } 1670 SCTP_TCB_LOCK_ASSERT(stcb); 1671 #ifdef SCTP_AUDITING_ENABLED 1672 sctp_auditing(4, inp, stcb, net); 1673 #endif 1674 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1675 if ((stcb->asoc.num_send_timers_up == 0) && 1676 (stcb->asoc.sent_queue_cnt > 0)) { 1677 struct sctp_tmit_chunk *chk; 1678 1679 /* 1680 * safeguard. If there on some on the sent queue 1681 * somewhere but no timers running something is 1682 * wrong... so we start a timer on the first chunk 1683 * on the send queue on whatever net it is sent to. 1684 */ 1685 chk = TAILQ_FIRST(&stcb->asoc.sent_queue); 1686 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, 1687 chk->whoTo); 1688 } 1689 break; 1690 case SCTP_TIMER_TYPE_INIT: 1691 if ((stcb == NULL) || (inp == NULL)) { 1692 break; 1693 } 1694 SCTP_STAT_INCR(sctps_timoinit); 1695 stcb->asoc.timoinit++; 1696 if (sctp_t1init_timer(inp, stcb, net)) { 1697 /* no need to unlock on tcb its gone */ 1698 goto out_decr; 1699 } 1700 /* We do output but not here */ 1701 did_output = 0; 1702 break; 1703 case SCTP_TIMER_TYPE_RECV: 1704 if ((stcb == NULL) || (inp == NULL)) { 1705 break; 1706 } 1707 SCTP_STAT_INCR(sctps_timosack); 1708 stcb->asoc.timosack++; 1709 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); 1710 #ifdef SCTP_AUDITING_ENABLED 1711 sctp_auditing(4, inp, stcb, net); 1712 #endif 1713 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED); 1714 break; 1715 case SCTP_TIMER_TYPE_SHUTDOWN: 1716 if ((stcb == NULL) || (inp == NULL)) { 1717 break; 1718 } 1719 if (sctp_shutdown_timer(inp, stcb, net)) { 1720 /* no need to unlock on tcb its gone */ 1721 goto out_decr; 1722 } 1723 SCTP_STAT_INCR(sctps_timoshutdown); 1724 stcb->asoc.timoshutdown++; 1725 #ifdef SCTP_AUDITING_ENABLED 1726 sctp_auditing(4, inp, stcb, net); 1727 #endif 1728 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED); 1729 break; 1730 case SCTP_TIMER_TYPE_HEARTBEAT: 1731 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) { 1732 break; 1733 } 1734 SCTP_STAT_INCR(sctps_timoheartbeat); 1735 stcb->asoc.timoheartbeat++; 1736 if (sctp_heartbeat_timer(inp, stcb, net)) { 1737 /* no need to unlock on tcb its gone */ 1738 goto out_decr; 1739 } 1740 #ifdef SCTP_AUDITING_ENABLED 1741 sctp_auditing(4, inp, stcb, net); 1742 #endif 1743 if (!(net->dest_state & SCTP_ADDR_NOHB)) { 1744 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); 1745 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED); 1746 } 1747 break; 1748 case SCTP_TIMER_TYPE_COOKIE: 1749 if ((stcb == NULL) || (inp == NULL)) { 1750 break; 1751 } 1752 if (sctp_cookie_timer(inp, stcb, net)) { 1753 /* no need to unlock on tcb its gone */ 1754 goto out_decr; 1755 } 1756 SCTP_STAT_INCR(sctps_timocookie); 1757 stcb->asoc.timocookie++; 1758 #ifdef SCTP_AUDITING_ENABLED 1759 sctp_auditing(4, inp, stcb, net); 1760 #endif 1761 /* 1762 * We consider T3 and Cookie timer pretty much the same with 1763 * respect to where from in chunk_output. 1764 */ 1765 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1766 break; 1767 case SCTP_TIMER_TYPE_NEWCOOKIE: 1768 { 1769 struct timeval tv; 1770 int i, secret; 1771 1772 if (inp == NULL) { 1773 break; 1774 } 1775 SCTP_STAT_INCR(sctps_timosecret); 1776 (void)SCTP_GETTIME_TIMEVAL(&tv); 1777 SCTP_INP_WLOCK(inp); 1778 inp->sctp_ep.time_of_secret_change = tv.tv_sec; 1779 inp->sctp_ep.last_secret_number = 1780 inp->sctp_ep.current_secret_number; 1781 inp->sctp_ep.current_secret_number++; 1782 if (inp->sctp_ep.current_secret_number >= 1783 SCTP_HOW_MANY_SECRETS) { 1784 inp->sctp_ep.current_secret_number = 0; 1785 } 1786 secret = (int)inp->sctp_ep.current_secret_number; 1787 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) { 1788 inp->sctp_ep.secret_key[secret][i] = 1789 sctp_select_initial_TSN(&inp->sctp_ep); 1790 } 1791 SCTP_INP_WUNLOCK(inp); 1792 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net); 1793 } 1794 did_output = 0; 1795 break; 1796 case SCTP_TIMER_TYPE_PATHMTURAISE: 1797 if ((stcb == NULL) || (inp == NULL)) { 1798 break; 1799 } 1800 SCTP_STAT_INCR(sctps_timopathmtu); 1801 sctp_pathmtu_timer(inp, stcb, net); 1802 did_output = 0; 1803 break; 1804 case SCTP_TIMER_TYPE_SHUTDOWNACK: 1805 if ((stcb == NULL) || (inp == NULL)) { 1806 break; 1807 } 1808 if (sctp_shutdownack_timer(inp, stcb, net)) { 1809 /* no need to unlock on tcb its gone */ 1810 goto out_decr; 1811 } 1812 SCTP_STAT_INCR(sctps_timoshutdownack); 1813 stcb->asoc.timoshutdownack++; 1814 #ifdef SCTP_AUDITING_ENABLED 1815 sctp_auditing(4, inp, stcb, net); 1816 #endif 1817 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED); 1818 break; 1819 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 1820 if ((stcb == NULL) || (inp == NULL)) { 1821 break; 1822 } 1823 SCTP_STAT_INCR(sctps_timoshutdownguard); 1824 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), 1825 "Shutdown guard timer expired"); 1826 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); 1827 /* no need to unlock on tcb its gone */ 1828 goto out_decr; 1829 1830 case SCTP_TIMER_TYPE_STRRESET: 1831 if ((stcb == NULL) || (inp == NULL)) { 1832 break; 1833 } 1834 if (sctp_strreset_timer(inp, stcb, net)) { 1835 /* no need to unlock on tcb its gone */ 1836 goto out_decr; 1837 } 1838 SCTP_STAT_INCR(sctps_timostrmrst); 1839 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED); 1840 break; 1841 case SCTP_TIMER_TYPE_ASCONF: 1842 if ((stcb == NULL) || (inp == NULL)) { 1843 break; 1844 } 1845 if (sctp_asconf_timer(inp, stcb, net)) { 1846 /* no need to unlock on tcb its gone */ 1847 goto out_decr; 1848 } 1849 SCTP_STAT_INCR(sctps_timoasconf); 1850 #ifdef SCTP_AUDITING_ENABLED 1851 sctp_auditing(4, inp, stcb, net); 1852 #endif 1853 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED); 1854 break; 1855 case SCTP_TIMER_TYPE_PRIM_DELETED: 1856 if ((stcb == NULL) || (inp == NULL)) { 1857 break; 1858 } 1859 sctp_delete_prim_timer(inp, stcb, net); 1860 SCTP_STAT_INCR(sctps_timodelprim); 1861 break; 1862 1863 case SCTP_TIMER_TYPE_AUTOCLOSE: 1864 if ((stcb == NULL) || (inp == NULL)) { 1865 break; 1866 } 1867 SCTP_STAT_INCR(sctps_timoautoclose); 1868 sctp_autoclose_timer(inp, stcb, net); 1869 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED); 1870 did_output = 0; 1871 break; 1872 case SCTP_TIMER_TYPE_ASOCKILL: 1873 if ((stcb == NULL) || (inp == NULL)) { 1874 break; 1875 } 1876 SCTP_STAT_INCR(sctps_timoassockill); 1877 /* Can we free it yet? */ 1878 SCTP_INP_DECR_REF(inp); 1879 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, 1880 SCTP_FROM_SCTPUTIL + SCTP_LOC_1); 1881 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1882 so = SCTP_INP_SO(inp); 1883 atomic_add_int(&stcb->asoc.refcnt, 1); 1884 SCTP_TCB_UNLOCK(stcb); 1885 SCTP_SOCKET_LOCK(so, 1); 1886 SCTP_TCB_LOCK(stcb); 1887 atomic_subtract_int(&stcb->asoc.refcnt, 1); 1888 #endif 1889 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 1890 SCTP_FROM_SCTPUTIL + SCTP_LOC_2); 1891 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1892 SCTP_SOCKET_UNLOCK(so, 1); 1893 #endif 1894 /* 1895 * free asoc, always unlocks (or destroy's) so prevent 1896 * duplicate unlock or unlock of a free mtx :-0 1897 */ 1898 stcb = NULL; 1899 goto out_no_decr; 1900 case SCTP_TIMER_TYPE_INPKILL: 1901 SCTP_STAT_INCR(sctps_timoinpkill); 1902 if (inp == NULL) { 1903 break; 1904 } 1905 /* 1906 * special case, take away our increment since WE are the 1907 * killer 1908 */ 1909 SCTP_INP_DECR_REF(inp); 1910 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, 1911 SCTP_FROM_SCTPUTIL + SCTP_LOC_3); 1912 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 1913 SCTP_CALLED_FROM_INPKILL_TIMER); 1914 inp = NULL; 1915 goto out_no_decr; 1916 default: 1917 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n", 1918 type); 1919 break; 1920 } 1921 #ifdef SCTP_AUDITING_ENABLED 1922 sctp_audit_log(0xF1, (uint8_t) type); 1923 if (inp) 1924 sctp_auditing(5, inp, stcb, net); 1925 #endif 1926 if ((did_output) && stcb) { 1927 /* 1928 * Now we need to clean up the control chunk chain if an 1929 * ECNE is on it. It must be marked as UNSENT again so next 1930 * call will continue to send it until such time that we get 1931 * a CWR, to remove it. It is, however, less likely that we 1932 * will find a ecn echo on the chain though. 1933 */ 1934 sctp_fix_ecn_echo(&stcb->asoc); 1935 } 1936 get_out: 1937 if (stcb) { 1938 SCTP_TCB_UNLOCK(stcb); 1939 } 1940 out_decr: 1941 if (inp) { 1942 SCTP_INP_DECR_REF(inp); 1943 } 1944 out_no_decr: 1945 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type); 1946 CURVNET_RESTORE(); 1947 } 1948 1949 void 1950 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 1951 struct sctp_nets *net) 1952 { 1953 uint32_t to_ticks; 1954 struct sctp_timer *tmr; 1955 1956 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) 1957 return; 1958 1959 tmr = NULL; 1960 if (stcb) { 1961 SCTP_TCB_LOCK_ASSERT(stcb); 1962 } 1963 switch (t_type) { 1964 case SCTP_TIMER_TYPE_ZERO_COPY: 1965 tmr = &inp->sctp_ep.zero_copy_timer; 1966 to_ticks = SCTP_ZERO_COPY_TICK_DELAY; 1967 break; 1968 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 1969 tmr = &inp->sctp_ep.zero_copy_sendq_timer; 1970 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY; 1971 break; 1972 case SCTP_TIMER_TYPE_ADDR_WQ: 1973 /* Only 1 tick away :-) */ 1974 tmr = &SCTP_BASE_INFO(addr_wq_timer); 1975 to_ticks = SCTP_ADDRESS_TICK_DELAY; 1976 break; 1977 case SCTP_TIMER_TYPE_SEND: 1978 /* Here we use the RTO timer */ 1979 { 1980 int rto_val; 1981 1982 if ((stcb == NULL) || (net == NULL)) { 1983 return; 1984 } 1985 tmr = &net->rxt_timer; 1986 if (net->RTO == 0) { 1987 rto_val = stcb->asoc.initial_rto; 1988 } else { 1989 rto_val = net->RTO; 1990 } 1991 to_ticks = MSEC_TO_TICKS(rto_val); 1992 } 1993 break; 1994 case SCTP_TIMER_TYPE_INIT: 1995 /* 1996 * Here we use the INIT timer default usually about 1 1997 * minute. 1998 */ 1999 if ((stcb == NULL) || (net == NULL)) { 2000 return; 2001 } 2002 tmr = &net->rxt_timer; 2003 if (net->RTO == 0) { 2004 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2005 } else { 2006 to_ticks = MSEC_TO_TICKS(net->RTO); 2007 } 2008 break; 2009 case SCTP_TIMER_TYPE_RECV: 2010 /* 2011 * Here we use the Delayed-Ack timer value from the inp 2012 * ususually about 200ms. 2013 */ 2014 if (stcb == NULL) { 2015 return; 2016 } 2017 tmr = &stcb->asoc.dack_timer; 2018 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack); 2019 break; 2020 case SCTP_TIMER_TYPE_SHUTDOWN: 2021 /* Here we use the RTO of the destination. */ 2022 if ((stcb == NULL) || (net == NULL)) { 2023 return; 2024 } 2025 if (net->RTO == 0) { 2026 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2027 } else { 2028 to_ticks = MSEC_TO_TICKS(net->RTO); 2029 } 2030 tmr = &net->rxt_timer; 2031 break; 2032 case SCTP_TIMER_TYPE_HEARTBEAT: 2033 /* 2034 * the net is used here so that we can add in the RTO. Even 2035 * though we use a different timer. We also add the HB timer 2036 * PLUS a random jitter. 2037 */ 2038 if ((stcb == NULL) || (net == NULL)) { 2039 return; 2040 } else { 2041 uint32_t rndval; 2042 uint32_t jitter; 2043 2044 if ((net->dest_state & SCTP_ADDR_NOHB) && 2045 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) { 2046 return; 2047 } 2048 if (net->RTO == 0) { 2049 to_ticks = stcb->asoc.initial_rto; 2050 } else { 2051 to_ticks = net->RTO; 2052 } 2053 rndval = sctp_select_initial_TSN(&inp->sctp_ep); 2054 jitter = rndval % to_ticks; 2055 if (jitter >= (to_ticks >> 1)) { 2056 to_ticks = to_ticks + (jitter - (to_ticks >> 1)); 2057 } else { 2058 to_ticks = to_ticks - jitter; 2059 } 2060 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) && 2061 !(net->dest_state & SCTP_ADDR_PF)) { 2062 to_ticks += net->heart_beat_delay; 2063 } 2064 /* 2065 * Now we must convert the to_ticks that are now in 2066 * ms to ticks. 2067 */ 2068 to_ticks = MSEC_TO_TICKS(to_ticks); 2069 tmr = &net->hb_timer; 2070 } 2071 break; 2072 case SCTP_TIMER_TYPE_COOKIE: 2073 /* 2074 * Here we can use the RTO timer from the network since one 2075 * RTT was compelete. If a retran happened then we will be 2076 * using the RTO initial value. 2077 */ 2078 if ((stcb == NULL) || (net == NULL)) { 2079 return; 2080 } 2081 if (net->RTO == 0) { 2082 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2083 } else { 2084 to_ticks = MSEC_TO_TICKS(net->RTO); 2085 } 2086 tmr = &net->rxt_timer; 2087 break; 2088 case SCTP_TIMER_TYPE_NEWCOOKIE: 2089 /* 2090 * nothing needed but the endpoint here ususually about 60 2091 * minutes. 2092 */ 2093 tmr = &inp->sctp_ep.signature_change; 2094 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE]; 2095 break; 2096 case SCTP_TIMER_TYPE_ASOCKILL: 2097 if (stcb == NULL) { 2098 return; 2099 } 2100 tmr = &stcb->asoc.strreset_timer; 2101 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT); 2102 break; 2103 case SCTP_TIMER_TYPE_INPKILL: 2104 /* 2105 * The inp is setup to die. We re-use the signature_chage 2106 * timer since that has stopped and we are in the GONE 2107 * state. 2108 */ 2109 tmr = &inp->sctp_ep.signature_change; 2110 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT); 2111 break; 2112 case SCTP_TIMER_TYPE_PATHMTURAISE: 2113 /* 2114 * Here we use the value found in the EP for PMTU ususually 2115 * about 10 minutes. 2116 */ 2117 if ((stcb == NULL) || (net == NULL)) { 2118 return; 2119 } 2120 if (net->dest_state & SCTP_ADDR_NO_PMTUD) { 2121 return; 2122 } 2123 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU]; 2124 tmr = &net->pmtu_timer; 2125 break; 2126 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2127 /* Here we use the RTO of the destination */ 2128 if ((stcb == NULL) || (net == NULL)) { 2129 return; 2130 } 2131 if (net->RTO == 0) { 2132 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2133 } else { 2134 to_ticks = MSEC_TO_TICKS(net->RTO); 2135 } 2136 tmr = &net->rxt_timer; 2137 break; 2138 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2139 /* 2140 * Here we use the endpoints shutdown guard timer usually 2141 * about 3 minutes. 2142 */ 2143 if (stcb == NULL) { 2144 return; 2145 } 2146 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) { 2147 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto); 2148 } else { 2149 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN]; 2150 } 2151 tmr = &stcb->asoc.shut_guard_timer; 2152 break; 2153 case SCTP_TIMER_TYPE_STRRESET: 2154 /* 2155 * Here the timer comes from the stcb but its value is from 2156 * the net's RTO. 2157 */ 2158 if ((stcb == NULL) || (net == NULL)) { 2159 return; 2160 } 2161 if (net->RTO == 0) { 2162 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2163 } else { 2164 to_ticks = MSEC_TO_TICKS(net->RTO); 2165 } 2166 tmr = &stcb->asoc.strreset_timer; 2167 break; 2168 case SCTP_TIMER_TYPE_ASCONF: 2169 /* 2170 * Here the timer comes from the stcb but its value is from 2171 * the net's RTO. 2172 */ 2173 if ((stcb == NULL) || (net == NULL)) { 2174 return; 2175 } 2176 if (net->RTO == 0) { 2177 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2178 } else { 2179 to_ticks = MSEC_TO_TICKS(net->RTO); 2180 } 2181 tmr = &stcb->asoc.asconf_timer; 2182 break; 2183 case SCTP_TIMER_TYPE_PRIM_DELETED: 2184 if ((stcb == NULL) || (net != NULL)) { 2185 return; 2186 } 2187 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2188 tmr = &stcb->asoc.delete_prim_timer; 2189 break; 2190 case SCTP_TIMER_TYPE_AUTOCLOSE: 2191 if (stcb == NULL) { 2192 return; 2193 } 2194 if (stcb->asoc.sctp_autoclose_ticks == 0) { 2195 /* 2196 * Really an error since stcb is NOT set to 2197 * autoclose 2198 */ 2199 return; 2200 } 2201 to_ticks = stcb->asoc.sctp_autoclose_ticks; 2202 tmr = &stcb->asoc.autoclose_timer; 2203 break; 2204 default: 2205 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n", 2206 __func__, t_type); 2207 return; 2208 break; 2209 } 2210 if ((to_ticks <= 0) || (tmr == NULL)) { 2211 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n", 2212 __func__, t_type, to_ticks, (void *)tmr); 2213 return; 2214 } 2215 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 2216 /* 2217 * we do NOT allow you to have it already running. if it is 2218 * we leave the current one up unchanged 2219 */ 2220 return; 2221 } 2222 /* At this point we can proceed */ 2223 if (t_type == SCTP_TIMER_TYPE_SEND) { 2224 stcb->asoc.num_send_timers_up++; 2225 } 2226 tmr->stopped_from = 0; 2227 tmr->type = t_type; 2228 tmr->ep = (void *)inp; 2229 tmr->tcb = (void *)stcb; 2230 tmr->net = (void *)net; 2231 tmr->self = (void *)tmr; 2232 tmr->vnet = (void *)curvnet; 2233 tmr->ticks = sctp_get_tick_count(); 2234 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr); 2235 return; 2236 } 2237 2238 void 2239 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 2240 struct sctp_nets *net, uint32_t from) 2241 { 2242 struct sctp_timer *tmr; 2243 2244 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && 2245 (inp == NULL)) 2246 return; 2247 2248 tmr = NULL; 2249 if (stcb) { 2250 SCTP_TCB_LOCK_ASSERT(stcb); 2251 } 2252 switch (t_type) { 2253 case SCTP_TIMER_TYPE_ZERO_COPY: 2254 tmr = &inp->sctp_ep.zero_copy_timer; 2255 break; 2256 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 2257 tmr = &inp->sctp_ep.zero_copy_sendq_timer; 2258 break; 2259 case SCTP_TIMER_TYPE_ADDR_WQ: 2260 tmr = &SCTP_BASE_INFO(addr_wq_timer); 2261 break; 2262 case SCTP_TIMER_TYPE_SEND: 2263 if ((stcb == NULL) || (net == NULL)) { 2264 return; 2265 } 2266 tmr = &net->rxt_timer; 2267 break; 2268 case SCTP_TIMER_TYPE_INIT: 2269 if ((stcb == NULL) || (net == NULL)) { 2270 return; 2271 } 2272 tmr = &net->rxt_timer; 2273 break; 2274 case SCTP_TIMER_TYPE_RECV: 2275 if (stcb == NULL) { 2276 return; 2277 } 2278 tmr = &stcb->asoc.dack_timer; 2279 break; 2280 case SCTP_TIMER_TYPE_SHUTDOWN: 2281 if ((stcb == NULL) || (net == NULL)) { 2282 return; 2283 } 2284 tmr = &net->rxt_timer; 2285 break; 2286 case SCTP_TIMER_TYPE_HEARTBEAT: 2287 if ((stcb == NULL) || (net == NULL)) { 2288 return; 2289 } 2290 tmr = &net->hb_timer; 2291 break; 2292 case SCTP_TIMER_TYPE_COOKIE: 2293 if ((stcb == NULL) || (net == NULL)) { 2294 return; 2295 } 2296 tmr = &net->rxt_timer; 2297 break; 2298 case SCTP_TIMER_TYPE_NEWCOOKIE: 2299 /* nothing needed but the endpoint here */ 2300 tmr = &inp->sctp_ep.signature_change; 2301 /* 2302 * We re-use the newcookie timer for the INP kill timer. We 2303 * must assure that we do not kill it by accident. 2304 */ 2305 break; 2306 case SCTP_TIMER_TYPE_ASOCKILL: 2307 /* 2308 * Stop the asoc kill timer. 2309 */ 2310 if (stcb == NULL) { 2311 return; 2312 } 2313 tmr = &stcb->asoc.strreset_timer; 2314 break; 2315 2316 case SCTP_TIMER_TYPE_INPKILL: 2317 /* 2318 * The inp is setup to die. We re-use the signature_chage 2319 * timer since that has stopped and we are in the GONE 2320 * state. 2321 */ 2322 tmr = &inp->sctp_ep.signature_change; 2323 break; 2324 case SCTP_TIMER_TYPE_PATHMTURAISE: 2325 if ((stcb == NULL) || (net == NULL)) { 2326 return; 2327 } 2328 tmr = &net->pmtu_timer; 2329 break; 2330 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2331 if ((stcb == NULL) || (net == NULL)) { 2332 return; 2333 } 2334 tmr = &net->rxt_timer; 2335 break; 2336 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2337 if (stcb == NULL) { 2338 return; 2339 } 2340 tmr = &stcb->asoc.shut_guard_timer; 2341 break; 2342 case SCTP_TIMER_TYPE_STRRESET: 2343 if (stcb == NULL) { 2344 return; 2345 } 2346 tmr = &stcb->asoc.strreset_timer; 2347 break; 2348 case SCTP_TIMER_TYPE_ASCONF: 2349 if (stcb == NULL) { 2350 return; 2351 } 2352 tmr = &stcb->asoc.asconf_timer; 2353 break; 2354 case SCTP_TIMER_TYPE_PRIM_DELETED: 2355 if (stcb == NULL) { 2356 return; 2357 } 2358 tmr = &stcb->asoc.delete_prim_timer; 2359 break; 2360 case SCTP_TIMER_TYPE_AUTOCLOSE: 2361 if (stcb == NULL) { 2362 return; 2363 } 2364 tmr = &stcb->asoc.autoclose_timer; 2365 break; 2366 default: 2367 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n", 2368 __func__, t_type); 2369 break; 2370 } 2371 if (tmr == NULL) { 2372 return; 2373 } 2374 if ((tmr->type != t_type) && tmr->type) { 2375 /* 2376 * Ok we have a timer that is under joint use. Cookie timer 2377 * per chance with the SEND timer. We therefore are NOT 2378 * running the timer that the caller wants stopped. So just 2379 * return. 2380 */ 2381 return; 2382 } 2383 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) { 2384 stcb->asoc.num_send_timers_up--; 2385 if (stcb->asoc.num_send_timers_up < 0) { 2386 stcb->asoc.num_send_timers_up = 0; 2387 } 2388 } 2389 tmr->self = NULL; 2390 tmr->stopped_from = from; 2391 (void)SCTP_OS_TIMER_STOP(&tmr->timer); 2392 return; 2393 } 2394 2395 uint32_t 2396 sctp_calculate_len(struct mbuf *m) 2397 { 2398 uint32_t tlen = 0; 2399 struct mbuf *at; 2400 2401 at = m; 2402 while (at) { 2403 tlen += SCTP_BUF_LEN(at); 2404 at = SCTP_BUF_NEXT(at); 2405 } 2406 return (tlen); 2407 } 2408 2409 void 2410 sctp_mtu_size_reset(struct sctp_inpcb *inp, 2411 struct sctp_association *asoc, uint32_t mtu) 2412 { 2413 /* 2414 * Reset the P-MTU size on this association, this involves changing 2415 * the asoc MTU, going through ANY chunk+overhead larger than mtu to 2416 * allow the DF flag to be cleared. 2417 */ 2418 struct sctp_tmit_chunk *chk; 2419 unsigned int eff_mtu, ovh; 2420 2421 asoc->smallest_mtu = mtu; 2422 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 2423 ovh = SCTP_MIN_OVERHEAD; 2424 } else { 2425 ovh = SCTP_MIN_V4_OVERHEAD; 2426 } 2427 eff_mtu = mtu - ovh; 2428 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) { 2429 if (chk->send_size > eff_mtu) { 2430 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 2431 } 2432 } 2433 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { 2434 if (chk->send_size > eff_mtu) { 2435 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 2436 } 2437 } 2438 } 2439 2440 2441 /* 2442 * given an association and starting time of the current RTT period return 2443 * RTO in number of msecs net should point to the current network 2444 */ 2445 2446 uint32_t 2447 sctp_calculate_rto(struct sctp_tcb *stcb, 2448 struct sctp_association *asoc, 2449 struct sctp_nets *net, 2450 struct timeval *told, 2451 int safe, int rtt_from_sack) 2452 { 2453 /*- 2454 * given an association and the starting time of the current RTT 2455 * period (in value1/value2) return RTO in number of msecs. 2456 */ 2457 int32_t rtt; /* RTT in ms */ 2458 uint32_t new_rto; 2459 int first_measure = 0; 2460 struct timeval now, then, *old; 2461 2462 /* Copy it out for sparc64 */ 2463 if (safe == sctp_align_unsafe_makecopy) { 2464 old = &then; 2465 memcpy(&then, told, sizeof(struct timeval)); 2466 } else if (safe == sctp_align_safe_nocopy) { 2467 old = told; 2468 } else { 2469 /* error */ 2470 SCTP_PRINTF("Huh, bad rto calc call\n"); 2471 return (0); 2472 } 2473 /************************/ 2474 /* 1. calculate new RTT */ 2475 /************************/ 2476 /* get the current time */ 2477 if (stcb->asoc.use_precise_time) { 2478 (void)SCTP_GETPTIME_TIMEVAL(&now); 2479 } else { 2480 (void)SCTP_GETTIME_TIMEVAL(&now); 2481 } 2482 timevalsub(&now, old); 2483 /* store the current RTT in us */ 2484 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec + 2485 (uint64_t) now.tv_usec; 2486 2487 /* compute rtt in ms */ 2488 rtt = (int32_t) (net->rtt / 1000); 2489 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) { 2490 /* 2491 * Tell the CC module that a new update has just occurred 2492 * from a sack 2493 */ 2494 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now); 2495 } 2496 /* 2497 * Do we need to determine the lan? We do this only on sacks i.e. 2498 * RTT being determined from data not non-data (HB/INIT->INITACK). 2499 */ 2500 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) && 2501 (net->lan_type == SCTP_LAN_UNKNOWN)) { 2502 if (net->rtt > SCTP_LOCAL_LAN_RTT) { 2503 net->lan_type = SCTP_LAN_INTERNET; 2504 } else { 2505 net->lan_type = SCTP_LAN_LOCAL; 2506 } 2507 } 2508 /***************************/ 2509 /* 2. update RTTVAR & SRTT */ 2510 /***************************/ 2511 /*- 2512 * Compute the scaled average lastsa and the 2513 * scaled variance lastsv as described in van Jacobson 2514 * Paper "Congestion Avoidance and Control", Annex A. 2515 * 2516 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt 2517 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar 2518 */ 2519 if (net->RTO_measured) { 2520 rtt -= (net->lastsa >> SCTP_RTT_SHIFT); 2521 net->lastsa += rtt; 2522 if (rtt < 0) { 2523 rtt = -rtt; 2524 } 2525 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT); 2526 net->lastsv += rtt; 2527 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { 2528 rto_logging(net, SCTP_LOG_RTTVAR); 2529 } 2530 } else { 2531 /* First RTO measurment */ 2532 net->RTO_measured = 1; 2533 first_measure = 1; 2534 net->lastsa = rtt << SCTP_RTT_SHIFT; 2535 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT; 2536 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { 2537 rto_logging(net, SCTP_LOG_INITIAL_RTT); 2538 } 2539 } 2540 if (net->lastsv == 0) { 2541 net->lastsv = SCTP_CLOCK_GRANULARITY; 2542 } 2543 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv; 2544 if ((new_rto > SCTP_SAT_NETWORK_MIN) && 2545 (stcb->asoc.sat_network_lockout == 0)) { 2546 stcb->asoc.sat_network = 1; 2547 } else if ((!first_measure) && stcb->asoc.sat_network) { 2548 stcb->asoc.sat_network = 0; 2549 stcb->asoc.sat_network_lockout = 1; 2550 } 2551 /* bound it, per C6/C7 in Section 5.3.1 */ 2552 if (new_rto < stcb->asoc.minrto) { 2553 new_rto = stcb->asoc.minrto; 2554 } 2555 if (new_rto > stcb->asoc.maxrto) { 2556 new_rto = stcb->asoc.maxrto; 2557 } 2558 /* we are now returning the RTO */ 2559 return (new_rto); 2560 } 2561 2562 /* 2563 * return a pointer to a contiguous piece of data from the given mbuf chain 2564 * starting at 'off' for 'len' bytes. If the desired piece spans more than 2565 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size 2566 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain. 2567 */ 2568 caddr_t 2569 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr) 2570 { 2571 uint32_t count; 2572 uint8_t *ptr; 2573 2574 ptr = in_ptr; 2575 if ((off < 0) || (len <= 0)) 2576 return (NULL); 2577 2578 /* find the desired start location */ 2579 while ((m != NULL) && (off > 0)) { 2580 if (off < SCTP_BUF_LEN(m)) 2581 break; 2582 off -= SCTP_BUF_LEN(m); 2583 m = SCTP_BUF_NEXT(m); 2584 } 2585 if (m == NULL) 2586 return (NULL); 2587 2588 /* is the current mbuf large enough (eg. contiguous)? */ 2589 if ((SCTP_BUF_LEN(m) - off) >= len) { 2590 return (mtod(m, caddr_t)+off); 2591 } else { 2592 /* else, it spans more than one mbuf, so save a temp copy... */ 2593 while ((m != NULL) && (len > 0)) { 2594 count = min(SCTP_BUF_LEN(m) - off, len); 2595 bcopy(mtod(m, caddr_t)+off, ptr, count); 2596 len -= count; 2597 ptr += count; 2598 off = 0; 2599 m = SCTP_BUF_NEXT(m); 2600 } 2601 if ((m == NULL) && (len > 0)) 2602 return (NULL); 2603 else 2604 return ((caddr_t)in_ptr); 2605 } 2606 } 2607 2608 2609 2610 struct sctp_paramhdr * 2611 sctp_get_next_param(struct mbuf *m, 2612 int offset, 2613 struct sctp_paramhdr *pull, 2614 int pull_limit) 2615 { 2616 /* This just provides a typed signature to Peter's Pull routine */ 2617 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit, 2618 (uint8_t *) pull)); 2619 } 2620 2621 2622 struct mbuf * 2623 sctp_add_pad_tombuf(struct mbuf *m, int padlen) 2624 { 2625 struct mbuf *m_last; 2626 caddr_t dp; 2627 2628 if (padlen > 3) { 2629 return (NULL); 2630 } 2631 if (padlen <= M_TRAILINGSPACE(m)) { 2632 /* 2633 * The easy way. We hope the majority of the time we hit 2634 * here :) 2635 */ 2636 m_last = m; 2637 } else { 2638 /* Hard way we must grow the mbuf chain */ 2639 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA); 2640 if (m_last == NULL) { 2641 return (NULL); 2642 } 2643 SCTP_BUF_LEN(m_last) = 0; 2644 SCTP_BUF_NEXT(m_last) = NULL; 2645 SCTP_BUF_NEXT(m) = m_last; 2646 } 2647 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last); 2648 SCTP_BUF_LEN(m_last) += padlen; 2649 memset(dp, 0, padlen); 2650 return (m_last); 2651 } 2652 2653 struct mbuf * 2654 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf) 2655 { 2656 /* find the last mbuf in chain and pad it */ 2657 struct mbuf *m_at; 2658 2659 if (last_mbuf != NULL) { 2660 return (sctp_add_pad_tombuf(last_mbuf, padval)); 2661 } else { 2662 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) { 2663 if (SCTP_BUF_NEXT(m_at) == NULL) { 2664 return (sctp_add_pad_tombuf(m_at, padval)); 2665 } 2666 } 2667 } 2668 return (NULL); 2669 } 2670 2671 static void 2672 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb, 2673 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked 2674 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2675 SCTP_UNUSED 2676 #endif 2677 ) 2678 { 2679 struct mbuf *m_notify; 2680 struct sctp_assoc_change *sac; 2681 struct sctp_queued_to_read *control; 2682 size_t notif_len, abort_len; 2683 unsigned int i; 2684 2685 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2686 struct socket *so; 2687 2688 #endif 2689 2690 if (stcb == NULL) { 2691 return; 2692 } 2693 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) { 2694 notif_len = sizeof(struct sctp_assoc_change); 2695 if (abort != NULL) { 2696 abort_len = ntohs(abort->ch.chunk_length); 2697 } else { 2698 abort_len = 0; 2699 } 2700 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { 2701 notif_len += SCTP_ASSOC_SUPPORTS_MAX; 2702 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { 2703 notif_len += abort_len; 2704 } 2705 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 2706 if (m_notify == NULL) { 2707 /* Retry with smaller value. */ 2708 notif_len = sizeof(struct sctp_assoc_change); 2709 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 2710 if (m_notify == NULL) { 2711 goto set_error; 2712 } 2713 } 2714 SCTP_BUF_NEXT(m_notify) = NULL; 2715 sac = mtod(m_notify, struct sctp_assoc_change *); 2716 memset(sac, 0, notif_len); 2717 sac->sac_type = SCTP_ASSOC_CHANGE; 2718 sac->sac_flags = 0; 2719 sac->sac_length = sizeof(struct sctp_assoc_change); 2720 sac->sac_state = state; 2721 sac->sac_error = error; 2722 /* XXX verify these stream counts */ 2723 sac->sac_outbound_streams = stcb->asoc.streamoutcnt; 2724 sac->sac_inbound_streams = stcb->asoc.streamincnt; 2725 sac->sac_assoc_id = sctp_get_associd(stcb); 2726 if (notif_len > sizeof(struct sctp_assoc_change)) { 2727 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { 2728 i = 0; 2729 if (stcb->asoc.prsctp_supported == 1) { 2730 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR; 2731 } 2732 if (stcb->asoc.auth_supported == 1) { 2733 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH; 2734 } 2735 if (stcb->asoc.asconf_supported == 1) { 2736 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF; 2737 } 2738 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF; 2739 if (stcb->asoc.reconfig_supported == 1) { 2740 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG; 2741 } 2742 sac->sac_length += i; 2743 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { 2744 memcpy(sac->sac_info, abort, abort_len); 2745 sac->sac_length += abort_len; 2746 } 2747 } 2748 SCTP_BUF_LEN(m_notify) = sac->sac_length; 2749 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 2750 0, 0, stcb->asoc.context, 0, 0, 0, 2751 m_notify); 2752 if (control != NULL) { 2753 control->length = SCTP_BUF_LEN(m_notify); 2754 /* not that we need this */ 2755 control->tail_mbuf = m_notify; 2756 control->spec_flags = M_NOTIFICATION; 2757 sctp_add_to_readq(stcb->sctp_ep, stcb, 2758 control, 2759 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, 2760 so_locked); 2761 } else { 2762 sctp_m_freem(m_notify); 2763 } 2764 } 2765 /* 2766 * For 1-to-1 style sockets, we send up and error when an ABORT 2767 * comes in. 2768 */ 2769 set_error: 2770 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 2771 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 2772 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { 2773 SOCK_LOCK(stcb->sctp_socket); 2774 if (from_peer) { 2775 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) { 2776 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED); 2777 stcb->sctp_socket->so_error = ECONNREFUSED; 2778 } else { 2779 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 2780 stcb->sctp_socket->so_error = ECONNRESET; 2781 } 2782 } else { 2783 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) || 2784 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) { 2785 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT); 2786 stcb->sctp_socket->so_error = ETIMEDOUT; 2787 } else { 2788 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED); 2789 stcb->sctp_socket->so_error = ECONNABORTED; 2790 } 2791 } 2792 } 2793 /* Wake ANY sleepers */ 2794 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2795 so = SCTP_INP_SO(stcb->sctp_ep); 2796 if (!so_locked) { 2797 atomic_add_int(&stcb->asoc.refcnt, 1); 2798 SCTP_TCB_UNLOCK(stcb); 2799 SCTP_SOCKET_LOCK(so, 1); 2800 SCTP_TCB_LOCK(stcb); 2801 atomic_subtract_int(&stcb->asoc.refcnt, 1); 2802 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 2803 SCTP_SOCKET_UNLOCK(so, 1); 2804 return; 2805 } 2806 } 2807 #endif 2808 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 2809 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 2810 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { 2811 socantrcvmore_locked(stcb->sctp_socket); 2812 } 2813 sorwakeup(stcb->sctp_socket); 2814 sowwakeup(stcb->sctp_socket); 2815 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2816 if (!so_locked) { 2817 SCTP_SOCKET_UNLOCK(so, 1); 2818 } 2819 #endif 2820 } 2821 2822 static void 2823 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state, 2824 struct sockaddr *sa, uint32_t error, int so_locked 2825 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2826 SCTP_UNUSED 2827 #endif 2828 ) 2829 { 2830 struct mbuf *m_notify; 2831 struct sctp_paddr_change *spc; 2832 struct sctp_queued_to_read *control; 2833 2834 if ((stcb == NULL) || 2835 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) { 2836 /* event not enabled */ 2837 return; 2838 } 2839 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA); 2840 if (m_notify == NULL) 2841 return; 2842 SCTP_BUF_LEN(m_notify) = 0; 2843 spc = mtod(m_notify, struct sctp_paddr_change *); 2844 memset(spc, 0, sizeof(struct sctp_paddr_change)); 2845 spc->spc_type = SCTP_PEER_ADDR_CHANGE; 2846 spc->spc_flags = 0; 2847 spc->spc_length = sizeof(struct sctp_paddr_change); 2848 switch (sa->sa_family) { 2849 #ifdef INET 2850 case AF_INET: 2851 #ifdef INET6 2852 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { 2853 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa, 2854 (struct sockaddr_in6 *)&spc->spc_aaddr); 2855 } else { 2856 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); 2857 } 2858 #else 2859 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); 2860 #endif 2861 break; 2862 #endif 2863 #ifdef INET6 2864 case AF_INET6: 2865 { 2866 struct sockaddr_in6 *sin6; 2867 2868 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6)); 2869 2870 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr; 2871 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) { 2872 if (sin6->sin6_scope_id == 0) { 2873 /* recover scope_id for user */ 2874 (void)sa6_recoverscope(sin6); 2875 } else { 2876 /* clear embedded scope_id for user */ 2877 in6_clearscope(&sin6->sin6_addr); 2878 } 2879 } 2880 break; 2881 } 2882 #endif 2883 default: 2884 /* TSNH */ 2885 break; 2886 } 2887 spc->spc_state = state; 2888 spc->spc_error = error; 2889 spc->spc_assoc_id = sctp_get_associd(stcb); 2890 2891 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change); 2892 SCTP_BUF_NEXT(m_notify) = NULL; 2893 2894 /* append to socket */ 2895 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 2896 0, 0, stcb->asoc.context, 0, 0, 0, 2897 m_notify); 2898 if (control == NULL) { 2899 /* no memory */ 2900 sctp_m_freem(m_notify); 2901 return; 2902 } 2903 control->length = SCTP_BUF_LEN(m_notify); 2904 control->spec_flags = M_NOTIFICATION; 2905 /* not that we need this */ 2906 control->tail_mbuf = m_notify; 2907 sctp_add_to_readq(stcb->sctp_ep, stcb, 2908 control, 2909 &stcb->sctp_socket->so_rcv, 1, 2910 SCTP_READ_LOCK_NOT_HELD, 2911 so_locked); 2912 } 2913 2914 2915 static void 2916 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error, 2917 struct sctp_tmit_chunk *chk, int so_locked 2918 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2919 SCTP_UNUSED 2920 #endif 2921 ) 2922 { 2923 struct mbuf *m_notify; 2924 struct sctp_send_failed *ssf; 2925 struct sctp_send_failed_event *ssfe; 2926 struct sctp_queued_to_read *control; 2927 int length; 2928 2929 if ((stcb == NULL) || 2930 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && 2931 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { 2932 /* event not enabled */ 2933 return; 2934 } 2935 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 2936 length = sizeof(struct sctp_send_failed_event); 2937 } else { 2938 length = sizeof(struct sctp_send_failed); 2939 } 2940 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA); 2941 if (m_notify == NULL) 2942 /* no space left */ 2943 return; 2944 SCTP_BUF_LEN(m_notify) = 0; 2945 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 2946 ssfe = mtod(m_notify, struct sctp_send_failed_event *); 2947 memset(ssfe, 0, length); 2948 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; 2949 if (sent) { 2950 ssfe->ssfe_flags = SCTP_DATA_SENT; 2951 } else { 2952 ssfe->ssfe_flags = SCTP_DATA_UNSENT; 2953 } 2954 length += chk->send_size; 2955 length -= sizeof(struct sctp_data_chunk); 2956 ssfe->ssfe_length = length; 2957 ssfe->ssfe_error = error; 2958 /* not exactly what the user sent in, but should be close :) */ 2959 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number; 2960 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags; 2961 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype; 2962 ssfe->ssfe_info.snd_context = chk->rec.data.context; 2963 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); 2964 ssfe->ssfe_assoc_id = sctp_get_associd(stcb); 2965 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event); 2966 } else { 2967 ssf = mtod(m_notify, struct sctp_send_failed *); 2968 memset(ssf, 0, length); 2969 ssf->ssf_type = SCTP_SEND_FAILED; 2970 if (sent) { 2971 ssf->ssf_flags = SCTP_DATA_SENT; 2972 } else { 2973 ssf->ssf_flags = SCTP_DATA_UNSENT; 2974 } 2975 length += chk->send_size; 2976 length -= sizeof(struct sctp_data_chunk); 2977 ssf->ssf_length = length; 2978 ssf->ssf_error = error; 2979 /* not exactly what the user sent in, but should be close :) */ 2980 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info)); 2981 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number; 2982 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq; 2983 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags; 2984 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype; 2985 ssf->ssf_info.sinfo_context = chk->rec.data.context; 2986 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 2987 ssf->ssf_assoc_id = sctp_get_associd(stcb); 2988 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed); 2989 } 2990 if (chk->data) { 2991 /* 2992 * trim off the sctp chunk header(it should be there) 2993 */ 2994 if (chk->send_size >= sizeof(struct sctp_data_chunk)) { 2995 m_adj(chk->data, sizeof(struct sctp_data_chunk)); 2996 sctp_mbuf_crush(chk->data); 2997 chk->send_size -= sizeof(struct sctp_data_chunk); 2998 } 2999 } 3000 SCTP_BUF_NEXT(m_notify) = chk->data; 3001 /* Steal off the mbuf */ 3002 chk->data = NULL; 3003 /* 3004 * For this case, we check the actual socket buffer, since the assoc 3005 * is going away we don't want to overfill the socket buffer for a 3006 * non-reader 3007 */ 3008 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3009 sctp_m_freem(m_notify); 3010 return; 3011 } 3012 /* append to socket */ 3013 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3014 0, 0, stcb->asoc.context, 0, 0, 0, 3015 m_notify); 3016 if (control == NULL) { 3017 /* no memory */ 3018 sctp_m_freem(m_notify); 3019 return; 3020 } 3021 control->spec_flags = M_NOTIFICATION; 3022 sctp_add_to_readq(stcb->sctp_ep, stcb, 3023 control, 3024 &stcb->sctp_socket->so_rcv, 1, 3025 SCTP_READ_LOCK_NOT_HELD, 3026 so_locked); 3027 } 3028 3029 3030 static void 3031 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error, 3032 struct sctp_stream_queue_pending *sp, int so_locked 3033 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3034 SCTP_UNUSED 3035 #endif 3036 ) 3037 { 3038 struct mbuf *m_notify; 3039 struct sctp_send_failed *ssf; 3040 struct sctp_send_failed_event *ssfe; 3041 struct sctp_queued_to_read *control; 3042 int length; 3043 3044 if ((stcb == NULL) || 3045 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && 3046 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { 3047 /* event not enabled */ 3048 return; 3049 } 3050 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3051 length = sizeof(struct sctp_send_failed_event); 3052 } else { 3053 length = sizeof(struct sctp_send_failed); 3054 } 3055 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA); 3056 if (m_notify == NULL) { 3057 /* no space left */ 3058 return; 3059 } 3060 SCTP_BUF_LEN(m_notify) = 0; 3061 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 3062 ssfe = mtod(m_notify, struct sctp_send_failed_event *); 3063 memset(ssfe, 0, length); 3064 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; 3065 ssfe->ssfe_flags = SCTP_DATA_UNSENT; 3066 length += sp->length; 3067 ssfe->ssfe_length = length; 3068 ssfe->ssfe_error = error; 3069 /* not exactly what the user sent in, but should be close :) */ 3070 ssfe->ssfe_info.snd_sid = sp->stream; 3071 if (sp->some_taken) { 3072 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG; 3073 } else { 3074 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG; 3075 } 3076 ssfe->ssfe_info.snd_ppid = sp->ppid; 3077 ssfe->ssfe_info.snd_context = sp->context; 3078 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); 3079 ssfe->ssfe_assoc_id = sctp_get_associd(stcb); 3080 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event); 3081 } else { 3082 ssf = mtod(m_notify, struct sctp_send_failed *); 3083 memset(ssf, 0, length); 3084 ssf->ssf_type = SCTP_SEND_FAILED; 3085 ssf->ssf_flags = SCTP_DATA_UNSENT; 3086 length += sp->length; 3087 ssf->ssf_length = length; 3088 ssf->ssf_error = error; 3089 /* not exactly what the user sent in, but should be close :) */ 3090 ssf->ssf_info.sinfo_stream = sp->stream; 3091 ssf->ssf_info.sinfo_ssn = 0; 3092 if (sp->some_taken) { 3093 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG; 3094 } else { 3095 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG; 3096 } 3097 ssf->ssf_info.sinfo_ppid = sp->ppid; 3098 ssf->ssf_info.sinfo_context = sp->context; 3099 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 3100 ssf->ssf_assoc_id = sctp_get_associd(stcb); 3101 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed); 3102 } 3103 SCTP_BUF_NEXT(m_notify) = sp->data; 3104 3105 /* Steal off the mbuf */ 3106 sp->data = NULL; 3107 /* 3108 * For this case, we check the actual socket buffer, since the assoc 3109 * is going away we don't want to overfill the socket buffer for a 3110 * non-reader 3111 */ 3112 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3113 sctp_m_freem(m_notify); 3114 return; 3115 } 3116 /* append to socket */ 3117 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3118 0, 0, stcb->asoc.context, 0, 0, 0, 3119 m_notify); 3120 if (control == NULL) { 3121 /* no memory */ 3122 sctp_m_freem(m_notify); 3123 return; 3124 } 3125 control->spec_flags = M_NOTIFICATION; 3126 sctp_add_to_readq(stcb->sctp_ep, stcb, 3127 control, 3128 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); 3129 } 3130 3131 3132 3133 static void 3134 sctp_notify_adaptation_layer(struct sctp_tcb *stcb) 3135 { 3136 struct mbuf *m_notify; 3137 struct sctp_adaptation_event *sai; 3138 struct sctp_queued_to_read *control; 3139 3140 if ((stcb == NULL) || 3141 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) { 3142 /* event not enabled */ 3143 return; 3144 } 3145 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA); 3146 if (m_notify == NULL) 3147 /* no space left */ 3148 return; 3149 SCTP_BUF_LEN(m_notify) = 0; 3150 sai = mtod(m_notify, struct sctp_adaptation_event *); 3151 memset(sai, 0, sizeof(struct sctp_adaptation_event)); 3152 sai->sai_type = SCTP_ADAPTATION_INDICATION; 3153 sai->sai_flags = 0; 3154 sai->sai_length = sizeof(struct sctp_adaptation_event); 3155 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation; 3156 sai->sai_assoc_id = sctp_get_associd(stcb); 3157 3158 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event); 3159 SCTP_BUF_NEXT(m_notify) = NULL; 3160 3161 /* append to socket */ 3162 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3163 0, 0, stcb->asoc.context, 0, 0, 0, 3164 m_notify); 3165 if (control == NULL) { 3166 /* no memory */ 3167 sctp_m_freem(m_notify); 3168 return; 3169 } 3170 control->length = SCTP_BUF_LEN(m_notify); 3171 control->spec_flags = M_NOTIFICATION; 3172 /* not that we need this */ 3173 control->tail_mbuf = m_notify; 3174 sctp_add_to_readq(stcb->sctp_ep, stcb, 3175 control, 3176 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3177 } 3178 3179 /* This always must be called with the read-queue LOCKED in the INP */ 3180 static void 3181 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error, 3182 uint32_t val, int so_locked 3183 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3184 SCTP_UNUSED 3185 #endif 3186 ) 3187 { 3188 struct mbuf *m_notify; 3189 struct sctp_pdapi_event *pdapi; 3190 struct sctp_queued_to_read *control; 3191 struct sockbuf *sb; 3192 3193 if ((stcb == NULL) || 3194 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) { 3195 /* event not enabled */ 3196 return; 3197 } 3198 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { 3199 return; 3200 } 3201 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA); 3202 if (m_notify == NULL) 3203 /* no space left */ 3204 return; 3205 SCTP_BUF_LEN(m_notify) = 0; 3206 pdapi = mtod(m_notify, struct sctp_pdapi_event *); 3207 memset(pdapi, 0, sizeof(struct sctp_pdapi_event)); 3208 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT; 3209 pdapi->pdapi_flags = 0; 3210 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event); 3211 pdapi->pdapi_indication = error; 3212 pdapi->pdapi_stream = (val >> 16); 3213 pdapi->pdapi_seq = (val & 0x0000ffff); 3214 pdapi->pdapi_assoc_id = sctp_get_associd(stcb); 3215 3216 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event); 3217 SCTP_BUF_NEXT(m_notify) = NULL; 3218 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3219 0, 0, stcb->asoc.context, 0, 0, 0, 3220 m_notify); 3221 if (control == NULL) { 3222 /* no memory */ 3223 sctp_m_freem(m_notify); 3224 return; 3225 } 3226 control->spec_flags = M_NOTIFICATION; 3227 control->length = SCTP_BUF_LEN(m_notify); 3228 /* not that we need this */ 3229 control->tail_mbuf = m_notify; 3230 control->held_length = 0; 3231 control->length = 0; 3232 sb = &stcb->sctp_socket->so_rcv; 3233 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 3234 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify)); 3235 } 3236 sctp_sballoc(stcb, sb, m_notify); 3237 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 3238 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 3239 } 3240 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify)); 3241 control->end_added = 1; 3242 if (stcb->asoc.control_pdapi) 3243 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next); 3244 else { 3245 /* we really should not see this case */ 3246 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next); 3247 } 3248 if (stcb->sctp_ep && stcb->sctp_socket) { 3249 /* This should always be the case */ 3250 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3251 struct socket *so; 3252 3253 so = SCTP_INP_SO(stcb->sctp_ep); 3254 if (!so_locked) { 3255 atomic_add_int(&stcb->asoc.refcnt, 1); 3256 SCTP_TCB_UNLOCK(stcb); 3257 SCTP_SOCKET_LOCK(so, 1); 3258 SCTP_TCB_LOCK(stcb); 3259 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3260 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 3261 SCTP_SOCKET_UNLOCK(so, 1); 3262 return; 3263 } 3264 } 3265 #endif 3266 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); 3267 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3268 if (!so_locked) { 3269 SCTP_SOCKET_UNLOCK(so, 1); 3270 } 3271 #endif 3272 } 3273 } 3274 3275 static void 3276 sctp_notify_shutdown_event(struct sctp_tcb *stcb) 3277 { 3278 struct mbuf *m_notify; 3279 struct sctp_shutdown_event *sse; 3280 struct sctp_queued_to_read *control; 3281 3282 /* 3283 * For TCP model AND UDP connected sockets we will send an error up 3284 * when an SHUTDOWN completes 3285 */ 3286 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3287 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 3288 /* mark socket closed for read/write and wakeup! */ 3289 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3290 struct socket *so; 3291 3292 so = SCTP_INP_SO(stcb->sctp_ep); 3293 atomic_add_int(&stcb->asoc.refcnt, 1); 3294 SCTP_TCB_UNLOCK(stcb); 3295 SCTP_SOCKET_LOCK(so, 1); 3296 SCTP_TCB_LOCK(stcb); 3297 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3298 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 3299 SCTP_SOCKET_UNLOCK(so, 1); 3300 return; 3301 } 3302 #endif 3303 socantsendmore(stcb->sctp_socket); 3304 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3305 SCTP_SOCKET_UNLOCK(so, 1); 3306 #endif 3307 } 3308 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) { 3309 /* event not enabled */ 3310 return; 3311 } 3312 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA); 3313 if (m_notify == NULL) 3314 /* no space left */ 3315 return; 3316 sse = mtod(m_notify, struct sctp_shutdown_event *); 3317 memset(sse, 0, sizeof(struct sctp_shutdown_event)); 3318 sse->sse_type = SCTP_SHUTDOWN_EVENT; 3319 sse->sse_flags = 0; 3320 sse->sse_length = sizeof(struct sctp_shutdown_event); 3321 sse->sse_assoc_id = sctp_get_associd(stcb); 3322 3323 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event); 3324 SCTP_BUF_NEXT(m_notify) = NULL; 3325 3326 /* append to socket */ 3327 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3328 0, 0, stcb->asoc.context, 0, 0, 0, 3329 m_notify); 3330 if (control == NULL) { 3331 /* no memory */ 3332 sctp_m_freem(m_notify); 3333 return; 3334 } 3335 control->spec_flags = M_NOTIFICATION; 3336 control->length = SCTP_BUF_LEN(m_notify); 3337 /* not that we need this */ 3338 control->tail_mbuf = m_notify; 3339 sctp_add_to_readq(stcb->sctp_ep, stcb, 3340 control, 3341 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3342 } 3343 3344 static void 3345 sctp_notify_sender_dry_event(struct sctp_tcb *stcb, 3346 int so_locked 3347 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3348 SCTP_UNUSED 3349 #endif 3350 ) 3351 { 3352 struct mbuf *m_notify; 3353 struct sctp_sender_dry_event *event; 3354 struct sctp_queued_to_read *control; 3355 3356 if ((stcb == NULL) || 3357 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) { 3358 /* event not enabled */ 3359 return; 3360 } 3361 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA); 3362 if (m_notify == NULL) { 3363 /* no space left */ 3364 return; 3365 } 3366 SCTP_BUF_LEN(m_notify) = 0; 3367 event = mtod(m_notify, struct sctp_sender_dry_event *); 3368 memset(event, 0, sizeof(struct sctp_sender_dry_event)); 3369 event->sender_dry_type = SCTP_SENDER_DRY_EVENT; 3370 event->sender_dry_flags = 0; 3371 event->sender_dry_length = sizeof(struct sctp_sender_dry_event); 3372 event->sender_dry_assoc_id = sctp_get_associd(stcb); 3373 3374 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event); 3375 SCTP_BUF_NEXT(m_notify) = NULL; 3376 3377 /* append to socket */ 3378 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3379 0, 0, stcb->asoc.context, 0, 0, 0, 3380 m_notify); 3381 if (control == NULL) { 3382 /* no memory */ 3383 sctp_m_freem(m_notify); 3384 return; 3385 } 3386 control->length = SCTP_BUF_LEN(m_notify); 3387 control->spec_flags = M_NOTIFICATION; 3388 /* not that we need this */ 3389 control->tail_mbuf = m_notify; 3390 sctp_add_to_readq(stcb->sctp_ep, stcb, control, 3391 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); 3392 } 3393 3394 3395 void 3396 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag) 3397 { 3398 struct mbuf *m_notify; 3399 struct sctp_queued_to_read *control; 3400 struct sctp_stream_change_event *stradd; 3401 3402 if ((stcb == NULL) || 3403 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) { 3404 /* event not enabled */ 3405 return; 3406 } 3407 if ((stcb->asoc.peer_req_out) && flag) { 3408 /* Peer made the request, don't tell the local user */ 3409 stcb->asoc.peer_req_out = 0; 3410 return; 3411 } 3412 stcb->asoc.peer_req_out = 0; 3413 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA); 3414 if (m_notify == NULL) 3415 /* no space left */ 3416 return; 3417 SCTP_BUF_LEN(m_notify) = 0; 3418 stradd = mtod(m_notify, struct sctp_stream_change_event *); 3419 memset(stradd, 0, sizeof(struct sctp_stream_change_event)); 3420 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT; 3421 stradd->strchange_flags = flag; 3422 stradd->strchange_length = sizeof(struct sctp_stream_change_event); 3423 stradd->strchange_assoc_id = sctp_get_associd(stcb); 3424 stradd->strchange_instrms = numberin; 3425 stradd->strchange_outstrms = numberout; 3426 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event); 3427 SCTP_BUF_NEXT(m_notify) = NULL; 3428 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3429 /* no space */ 3430 sctp_m_freem(m_notify); 3431 return; 3432 } 3433 /* append to socket */ 3434 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3435 0, 0, stcb->asoc.context, 0, 0, 0, 3436 m_notify); 3437 if (control == NULL) { 3438 /* no memory */ 3439 sctp_m_freem(m_notify); 3440 return; 3441 } 3442 control->spec_flags = M_NOTIFICATION; 3443 control->length = SCTP_BUF_LEN(m_notify); 3444 /* not that we need this */ 3445 control->tail_mbuf = m_notify; 3446 sctp_add_to_readq(stcb->sctp_ep, stcb, 3447 control, 3448 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3449 } 3450 3451 void 3452 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag) 3453 { 3454 struct mbuf *m_notify; 3455 struct sctp_queued_to_read *control; 3456 struct sctp_assoc_reset_event *strasoc; 3457 3458 if ((stcb == NULL) || 3459 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) { 3460 /* event not enabled */ 3461 return; 3462 } 3463 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA); 3464 if (m_notify == NULL) 3465 /* no space left */ 3466 return; 3467 SCTP_BUF_LEN(m_notify) = 0; 3468 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *); 3469 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event)); 3470 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT; 3471 strasoc->assocreset_flags = flag; 3472 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event); 3473 strasoc->assocreset_assoc_id = sctp_get_associd(stcb); 3474 strasoc->assocreset_local_tsn = sending_tsn; 3475 strasoc->assocreset_remote_tsn = recv_tsn; 3476 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event); 3477 SCTP_BUF_NEXT(m_notify) = NULL; 3478 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3479 /* no space */ 3480 sctp_m_freem(m_notify); 3481 return; 3482 } 3483 /* append to socket */ 3484 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3485 0, 0, stcb->asoc.context, 0, 0, 0, 3486 m_notify); 3487 if (control == NULL) { 3488 /* no memory */ 3489 sctp_m_freem(m_notify); 3490 return; 3491 } 3492 control->spec_flags = M_NOTIFICATION; 3493 control->length = SCTP_BUF_LEN(m_notify); 3494 /* not that we need this */ 3495 control->tail_mbuf = m_notify; 3496 sctp_add_to_readq(stcb->sctp_ep, stcb, 3497 control, 3498 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3499 } 3500 3501 3502 3503 static void 3504 sctp_notify_stream_reset(struct sctp_tcb *stcb, 3505 int number_entries, uint16_t * list, int flag) 3506 { 3507 struct mbuf *m_notify; 3508 struct sctp_queued_to_read *control; 3509 struct sctp_stream_reset_event *strreset; 3510 int len; 3511 3512 if ((stcb == NULL) || 3513 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) { 3514 /* event not enabled */ 3515 return; 3516 } 3517 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); 3518 if (m_notify == NULL) 3519 /* no space left */ 3520 return; 3521 SCTP_BUF_LEN(m_notify) = 0; 3522 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t)); 3523 if (len > M_TRAILINGSPACE(m_notify)) { 3524 /* never enough room */ 3525 sctp_m_freem(m_notify); 3526 return; 3527 } 3528 strreset = mtod(m_notify, struct sctp_stream_reset_event *); 3529 memset(strreset, 0, len); 3530 strreset->strreset_type = SCTP_STREAM_RESET_EVENT; 3531 strreset->strreset_flags = flag; 3532 strreset->strreset_length = len; 3533 strreset->strreset_assoc_id = sctp_get_associd(stcb); 3534 if (number_entries) { 3535 int i; 3536 3537 for (i = 0; i < number_entries; i++) { 3538 strreset->strreset_stream_list[i] = ntohs(list[i]); 3539 } 3540 } 3541 SCTP_BUF_LEN(m_notify) = len; 3542 SCTP_BUF_NEXT(m_notify) = NULL; 3543 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3544 /* no space */ 3545 sctp_m_freem(m_notify); 3546 return; 3547 } 3548 /* append to socket */ 3549 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3550 0, 0, stcb->asoc.context, 0, 0, 0, 3551 m_notify); 3552 if (control == NULL) { 3553 /* no memory */ 3554 sctp_m_freem(m_notify); 3555 return; 3556 } 3557 control->spec_flags = M_NOTIFICATION; 3558 control->length = SCTP_BUF_LEN(m_notify); 3559 /* not that we need this */ 3560 control->tail_mbuf = m_notify; 3561 sctp_add_to_readq(stcb->sctp_ep, stcb, 3562 control, 3563 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3564 } 3565 3566 3567 static void 3568 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk) 3569 { 3570 struct mbuf *m_notify; 3571 struct sctp_remote_error *sre; 3572 struct sctp_queued_to_read *control; 3573 size_t notif_len, chunk_len; 3574 3575 if ((stcb == NULL) || 3576 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) { 3577 return; 3578 } 3579 if (chunk != NULL) { 3580 chunk_len = ntohs(chunk->ch.chunk_length); 3581 } else { 3582 chunk_len = 0; 3583 } 3584 notif_len = sizeof(struct sctp_remote_error) + chunk_len; 3585 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 3586 if (m_notify == NULL) { 3587 /* Retry with smaller value. */ 3588 notif_len = sizeof(struct sctp_remote_error); 3589 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 3590 if (m_notify == NULL) { 3591 return; 3592 } 3593 } 3594 SCTP_BUF_NEXT(m_notify) = NULL; 3595 sre = mtod(m_notify, struct sctp_remote_error *); 3596 memset(sre, 0, notif_len); 3597 sre->sre_type = SCTP_REMOTE_ERROR; 3598 sre->sre_flags = 0; 3599 sre->sre_length = sizeof(struct sctp_remote_error); 3600 sre->sre_error = error; 3601 sre->sre_assoc_id = sctp_get_associd(stcb); 3602 if (notif_len > sizeof(struct sctp_remote_error)) { 3603 memcpy(sre->sre_data, chunk, chunk_len); 3604 sre->sre_length += chunk_len; 3605 } 3606 SCTP_BUF_LEN(m_notify) = sre->sre_length; 3607 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3608 0, 0, stcb->asoc.context, 0, 0, 0, 3609 m_notify); 3610 if (control != NULL) { 3611 control->length = SCTP_BUF_LEN(m_notify); 3612 /* not that we need this */ 3613 control->tail_mbuf = m_notify; 3614 control->spec_flags = M_NOTIFICATION; 3615 sctp_add_to_readq(stcb->sctp_ep, stcb, 3616 control, 3617 &stcb->sctp_socket->so_rcv, 1, 3618 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3619 } else { 3620 sctp_m_freem(m_notify); 3621 } 3622 } 3623 3624 3625 void 3626 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb, 3627 uint32_t error, void *data, int so_locked 3628 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3629 SCTP_UNUSED 3630 #endif 3631 ) 3632 { 3633 if ((stcb == NULL) || 3634 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3635 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3636 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 3637 /* If the socket is gone we are out of here */ 3638 return; 3639 } 3640 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) { 3641 return; 3642 } 3643 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) || 3644 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) { 3645 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) || 3646 (notification == SCTP_NOTIFY_INTERFACE_UP) || 3647 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) { 3648 /* Don't report these in front states */ 3649 return; 3650 } 3651 } 3652 switch (notification) { 3653 case SCTP_NOTIFY_ASSOC_UP: 3654 if (stcb->asoc.assoc_up_sent == 0) { 3655 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked); 3656 stcb->asoc.assoc_up_sent = 1; 3657 } 3658 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) { 3659 sctp_notify_adaptation_layer(stcb); 3660 } 3661 if (stcb->asoc.auth_supported == 0) { 3662 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, 3663 NULL, so_locked); 3664 } 3665 break; 3666 case SCTP_NOTIFY_ASSOC_DOWN: 3667 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked); 3668 break; 3669 case SCTP_NOTIFY_INTERFACE_DOWN: 3670 { 3671 struct sctp_nets *net; 3672 3673 net = (struct sctp_nets *)data; 3674 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE, 3675 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 3676 break; 3677 } 3678 case SCTP_NOTIFY_INTERFACE_UP: 3679 { 3680 struct sctp_nets *net; 3681 3682 net = (struct sctp_nets *)data; 3683 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE, 3684 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 3685 break; 3686 } 3687 case SCTP_NOTIFY_INTERFACE_CONFIRMED: 3688 { 3689 struct sctp_nets *net; 3690 3691 net = (struct sctp_nets *)data; 3692 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED, 3693 (struct sockaddr *)&net->ro._l_addr, error, so_locked); 3694 break; 3695 } 3696 case SCTP_NOTIFY_SPECIAL_SP_FAIL: 3697 sctp_notify_send_failed2(stcb, error, 3698 (struct sctp_stream_queue_pending *)data, so_locked); 3699 break; 3700 case SCTP_NOTIFY_SENT_DG_FAIL: 3701 sctp_notify_send_failed(stcb, 1, error, 3702 (struct sctp_tmit_chunk *)data, so_locked); 3703 break; 3704 case SCTP_NOTIFY_UNSENT_DG_FAIL: 3705 sctp_notify_send_failed(stcb, 0, error, 3706 (struct sctp_tmit_chunk *)data, so_locked); 3707 break; 3708 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION: 3709 { 3710 uint32_t val; 3711 3712 val = *((uint32_t *) data); 3713 3714 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked); 3715 break; 3716 } 3717 case SCTP_NOTIFY_ASSOC_LOC_ABORTED: 3718 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) || 3719 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) { 3720 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked); 3721 } else { 3722 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked); 3723 } 3724 break; 3725 case SCTP_NOTIFY_ASSOC_REM_ABORTED: 3726 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) || 3727 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) { 3728 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked); 3729 } else { 3730 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked); 3731 } 3732 break; 3733 case SCTP_NOTIFY_ASSOC_RESTART: 3734 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked); 3735 if (stcb->asoc.auth_supported == 0) { 3736 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, 3737 NULL, so_locked); 3738 } 3739 break; 3740 case SCTP_NOTIFY_STR_RESET_SEND: 3741 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN); 3742 break; 3743 case SCTP_NOTIFY_STR_RESET_RECV: 3744 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING); 3745 break; 3746 case SCTP_NOTIFY_STR_RESET_FAILED_OUT: 3747 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), 3748 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED)); 3749 break; 3750 case SCTP_NOTIFY_STR_RESET_DENIED_OUT: 3751 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), 3752 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED)); 3753 break; 3754 case SCTP_NOTIFY_STR_RESET_FAILED_IN: 3755 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), 3756 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED)); 3757 break; 3758 case SCTP_NOTIFY_STR_RESET_DENIED_IN: 3759 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), 3760 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED)); 3761 break; 3762 case SCTP_NOTIFY_ASCONF_ADD_IP: 3763 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data, 3764 error, so_locked); 3765 break; 3766 case SCTP_NOTIFY_ASCONF_DELETE_IP: 3767 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data, 3768 error, so_locked); 3769 break; 3770 case SCTP_NOTIFY_ASCONF_SET_PRIMARY: 3771 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data, 3772 error, so_locked); 3773 break; 3774 case SCTP_NOTIFY_PEER_SHUTDOWN: 3775 sctp_notify_shutdown_event(stcb); 3776 break; 3777 case SCTP_NOTIFY_AUTH_NEW_KEY: 3778 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error, 3779 (uint16_t) (uintptr_t) data, 3780 so_locked); 3781 break; 3782 case SCTP_NOTIFY_AUTH_FREE_KEY: 3783 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error, 3784 (uint16_t) (uintptr_t) data, 3785 so_locked); 3786 break; 3787 case SCTP_NOTIFY_NO_PEER_AUTH: 3788 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error, 3789 (uint16_t) (uintptr_t) data, 3790 so_locked); 3791 break; 3792 case SCTP_NOTIFY_SENDER_DRY: 3793 sctp_notify_sender_dry_event(stcb, so_locked); 3794 break; 3795 case SCTP_NOTIFY_REMOTE_ERROR: 3796 sctp_notify_remote_error(stcb, error, data); 3797 break; 3798 default: 3799 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n", 3800 __func__, notification, notification); 3801 break; 3802 } /* end switch */ 3803 } 3804 3805 void 3806 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked 3807 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3808 SCTP_UNUSED 3809 #endif 3810 ) 3811 { 3812 struct sctp_association *asoc; 3813 struct sctp_stream_out *outs; 3814 struct sctp_tmit_chunk *chk, *nchk; 3815 struct sctp_stream_queue_pending *sp, *nsp; 3816 int i; 3817 3818 if (stcb == NULL) { 3819 return; 3820 } 3821 asoc = &stcb->asoc; 3822 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) { 3823 /* already being freed */ 3824 return; 3825 } 3826 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3827 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3828 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) { 3829 return; 3830 } 3831 /* now through all the gunk freeing chunks */ 3832 if (holds_lock == 0) { 3833 SCTP_TCB_SEND_LOCK(stcb); 3834 } 3835 /* sent queue SHOULD be empty */ 3836 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) { 3837 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next); 3838 asoc->sent_queue_cnt--; 3839 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) { 3840 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { 3841 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; 3842 #ifdef INVARIANTS 3843 } else { 3844 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); 3845 #endif 3846 } 3847 } 3848 if (chk->data != NULL) { 3849 sctp_free_bufspace(stcb, asoc, chk, 1); 3850 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 3851 error, chk, so_locked); 3852 if (chk->data) { 3853 sctp_m_freem(chk->data); 3854 chk->data = NULL; 3855 } 3856 } 3857 sctp_free_a_chunk(stcb, chk, so_locked); 3858 /* sa_ignore FREED_MEMORY */ 3859 } 3860 /* pending send queue SHOULD be empty */ 3861 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { 3862 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next); 3863 asoc->send_queue_cnt--; 3864 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { 3865 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; 3866 #ifdef INVARIANTS 3867 } else { 3868 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); 3869 #endif 3870 } 3871 if (chk->data != NULL) { 3872 sctp_free_bufspace(stcb, asoc, chk, 1); 3873 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 3874 error, chk, so_locked); 3875 if (chk->data) { 3876 sctp_m_freem(chk->data); 3877 chk->data = NULL; 3878 } 3879 } 3880 sctp_free_a_chunk(stcb, chk, so_locked); 3881 /* sa_ignore FREED_MEMORY */ 3882 } 3883 for (i = 0; i < asoc->streamoutcnt; i++) { 3884 /* For each stream */ 3885 outs = &asoc->strmout[i]; 3886 /* clean up any sends there */ 3887 asoc->locked_on_sending = NULL; 3888 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) { 3889 asoc->stream_queue_cnt--; 3890 TAILQ_REMOVE(&outs->outqueue, sp, next); 3891 sctp_free_spbufspace(stcb, asoc, sp); 3892 if (sp->data) { 3893 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb, 3894 error, (void *)sp, so_locked); 3895 if (sp->data) { 3896 sctp_m_freem(sp->data); 3897 sp->data = NULL; 3898 sp->tail_mbuf = NULL; 3899 sp->length = 0; 3900 } 3901 } 3902 if (sp->net) { 3903 sctp_free_remote_addr(sp->net); 3904 sp->net = NULL; 3905 } 3906 /* Free the chunk */ 3907 sctp_free_a_strmoq(stcb, sp, so_locked); 3908 /* sa_ignore FREED_MEMORY */ 3909 } 3910 } 3911 3912 if (holds_lock == 0) { 3913 SCTP_TCB_SEND_UNLOCK(stcb); 3914 } 3915 } 3916 3917 void 3918 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error, 3919 struct sctp_abort_chunk *abort, int so_locked 3920 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3921 SCTP_UNUSED 3922 #endif 3923 ) 3924 { 3925 if (stcb == NULL) { 3926 return; 3927 } 3928 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || 3929 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 3930 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) { 3931 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED; 3932 } 3933 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3934 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3935 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 3936 return; 3937 } 3938 /* Tell them we lost the asoc */ 3939 sctp_report_all_outbound(stcb, error, 1, so_locked); 3940 if (from_peer) { 3941 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked); 3942 } else { 3943 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked); 3944 } 3945 } 3946 3947 void 3948 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 3949 struct mbuf *m, int iphlen, 3950 struct sockaddr *src, struct sockaddr *dst, 3951 struct sctphdr *sh, struct mbuf *op_err, 3952 uint8_t mflowtype, uint32_t mflowid, 3953 uint32_t vrf_id, uint16_t port) 3954 { 3955 uint32_t vtag; 3956 3957 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3958 struct socket *so; 3959 3960 #endif 3961 3962 vtag = 0; 3963 if (stcb != NULL) { 3964 /* We have a TCB to abort, send notification too */ 3965 vtag = stcb->asoc.peer_vtag; 3966 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED); 3967 /* get the assoc vrf id and table id */ 3968 vrf_id = stcb->asoc.vrf_id; 3969 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; 3970 } 3971 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err, 3972 mflowtype, mflowid, inp->fibnum, 3973 vrf_id, port); 3974 if (stcb != NULL) { 3975 /* Ok, now lets free it */ 3976 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3977 so = SCTP_INP_SO(inp); 3978 atomic_add_int(&stcb->asoc.refcnt, 1); 3979 SCTP_TCB_UNLOCK(stcb); 3980 SCTP_SOCKET_LOCK(so, 1); 3981 SCTP_TCB_LOCK(stcb); 3982 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3983 #endif 3984 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 3985 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || 3986 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 3987 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 3988 } 3989 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 3990 SCTP_FROM_SCTPUTIL + SCTP_LOC_4); 3991 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3992 SCTP_SOCKET_UNLOCK(so, 1); 3993 #endif 3994 } 3995 } 3996 3997 #ifdef SCTP_ASOCLOG_OF_TSNS 3998 void 3999 sctp_print_out_track_log(struct sctp_tcb *stcb) 4000 { 4001 #ifdef NOSIY_PRINTS 4002 int i; 4003 4004 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code); 4005 SCTP_PRINTF("IN bound TSN log-aaa\n"); 4006 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) { 4007 SCTP_PRINTF("None rcvd\n"); 4008 goto none_in; 4009 } 4010 if (stcb->asoc.tsn_in_wrapped) { 4011 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) { 4012 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4013 stcb->asoc.in_tsnlog[i].tsn, 4014 stcb->asoc.in_tsnlog[i].strm, 4015 stcb->asoc.in_tsnlog[i].seq, 4016 stcb->asoc.in_tsnlog[i].flgs, 4017 stcb->asoc.in_tsnlog[i].sz); 4018 } 4019 } 4020 if (stcb->asoc.tsn_in_at) { 4021 for (i = 0; i < stcb->asoc.tsn_in_at; i++) { 4022 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4023 stcb->asoc.in_tsnlog[i].tsn, 4024 stcb->asoc.in_tsnlog[i].strm, 4025 stcb->asoc.in_tsnlog[i].seq, 4026 stcb->asoc.in_tsnlog[i].flgs, 4027 stcb->asoc.in_tsnlog[i].sz); 4028 } 4029 } 4030 none_in: 4031 SCTP_PRINTF("OUT bound TSN log-aaa\n"); 4032 if ((stcb->asoc.tsn_out_at == 0) && 4033 (stcb->asoc.tsn_out_wrapped == 0)) { 4034 SCTP_PRINTF("None sent\n"); 4035 } 4036 if (stcb->asoc.tsn_out_wrapped) { 4037 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) { 4038 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4039 stcb->asoc.out_tsnlog[i].tsn, 4040 stcb->asoc.out_tsnlog[i].strm, 4041 stcb->asoc.out_tsnlog[i].seq, 4042 stcb->asoc.out_tsnlog[i].flgs, 4043 stcb->asoc.out_tsnlog[i].sz); 4044 } 4045 } 4046 if (stcb->asoc.tsn_out_at) { 4047 for (i = 0; i < stcb->asoc.tsn_out_at; i++) { 4048 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 4049 stcb->asoc.out_tsnlog[i].tsn, 4050 stcb->asoc.out_tsnlog[i].strm, 4051 stcb->asoc.out_tsnlog[i].seq, 4052 stcb->asoc.out_tsnlog[i].flgs, 4053 stcb->asoc.out_tsnlog[i].sz); 4054 } 4055 } 4056 #endif 4057 } 4058 4059 #endif 4060 4061 void 4062 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 4063 struct mbuf *op_err, 4064 int so_locked 4065 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 4066 SCTP_UNUSED 4067 #endif 4068 ) 4069 { 4070 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4071 struct socket *so; 4072 4073 #endif 4074 4075 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4076 so = SCTP_INP_SO(inp); 4077 #endif 4078 if (stcb == NULL) { 4079 /* Got to have a TCB */ 4080 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4081 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 4082 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 4083 SCTP_CALLED_DIRECTLY_NOCMPSET); 4084 } 4085 } 4086 return; 4087 } else { 4088 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; 4089 } 4090 /* notify the ulp */ 4091 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 4092 sctp_abort_notification(stcb, 0, 0, NULL, so_locked); 4093 } 4094 /* notify the peer */ 4095 sctp_send_abort_tcb(stcb, op_err, so_locked); 4096 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 4097 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || 4098 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 4099 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 4100 } 4101 /* now free the asoc */ 4102 #ifdef SCTP_ASOCLOG_OF_TSNS 4103 sctp_print_out_track_log(stcb); 4104 #endif 4105 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4106 if (!so_locked) { 4107 atomic_add_int(&stcb->asoc.refcnt, 1); 4108 SCTP_TCB_UNLOCK(stcb); 4109 SCTP_SOCKET_LOCK(so, 1); 4110 SCTP_TCB_LOCK(stcb); 4111 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4112 } 4113 #endif 4114 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 4115 SCTP_FROM_SCTPUTIL + SCTP_LOC_5); 4116 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4117 if (!so_locked) { 4118 SCTP_SOCKET_UNLOCK(so, 1); 4119 } 4120 #endif 4121 } 4122 4123 void 4124 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, 4125 struct sockaddr *src, struct sockaddr *dst, 4126 struct sctphdr *sh, struct sctp_inpcb *inp, 4127 struct mbuf *cause, 4128 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, 4129 uint32_t vrf_id, uint16_t port) 4130 { 4131 struct sctp_chunkhdr *ch, chunk_buf; 4132 unsigned int chk_length; 4133 int contains_init_chunk; 4134 4135 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue); 4136 /* Generate a TO address for future reference */ 4137 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { 4138 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 4139 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 4140 SCTP_CALLED_DIRECTLY_NOCMPSET); 4141 } 4142 } 4143 contains_init_chunk = 0; 4144 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4145 sizeof(*ch), (uint8_t *) & chunk_buf); 4146 while (ch != NULL) { 4147 chk_length = ntohs(ch->chunk_length); 4148 if (chk_length < sizeof(*ch)) { 4149 /* break to abort land */ 4150 break; 4151 } 4152 switch (ch->chunk_type) { 4153 case SCTP_INIT: 4154 contains_init_chunk = 1; 4155 break; 4156 case SCTP_PACKET_DROPPED: 4157 /* we don't respond to pkt-dropped */ 4158 return; 4159 case SCTP_ABORT_ASSOCIATION: 4160 /* we don't respond with an ABORT to an ABORT */ 4161 return; 4162 case SCTP_SHUTDOWN_COMPLETE: 4163 /* 4164 * we ignore it since we are not waiting for it and 4165 * peer is gone 4166 */ 4167 return; 4168 case SCTP_SHUTDOWN_ACK: 4169 sctp_send_shutdown_complete2(src, dst, sh, 4170 mflowtype, mflowid, fibnum, 4171 vrf_id, port); 4172 return; 4173 default: 4174 break; 4175 } 4176 offset += SCTP_SIZE32(chk_length); 4177 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4178 sizeof(*ch), (uint8_t *) & chunk_buf); 4179 } 4180 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) || 4181 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) && 4182 (contains_init_chunk == 0))) { 4183 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause, 4184 mflowtype, mflowid, fibnum, 4185 vrf_id, port); 4186 } 4187 } 4188 4189 /* 4190 * check the inbound datagram to make sure there is not an abort inside it, 4191 * if there is return 1, else return 0. 4192 */ 4193 int 4194 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill) 4195 { 4196 struct sctp_chunkhdr *ch; 4197 struct sctp_init_chunk *init_chk, chunk_buf; 4198 int offset; 4199 unsigned int chk_length; 4200 4201 offset = iphlen + sizeof(struct sctphdr); 4202 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), 4203 (uint8_t *) & chunk_buf); 4204 while (ch != NULL) { 4205 chk_length = ntohs(ch->chunk_length); 4206 if (chk_length < sizeof(*ch)) { 4207 /* packet is probably corrupt */ 4208 break; 4209 } 4210 /* we seem to be ok, is it an abort? */ 4211 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) { 4212 /* yep, tell them */ 4213 return (1); 4214 } 4215 if (ch->chunk_type == SCTP_INITIATION) { 4216 /* need to update the Vtag */ 4217 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 4218 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf); 4219 if (init_chk != NULL) { 4220 *vtagfill = ntohl(init_chk->init.initiate_tag); 4221 } 4222 } 4223 /* Nope, move to the next chunk */ 4224 offset += SCTP_SIZE32(chk_length); 4225 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4226 sizeof(*ch), (uint8_t *) & chunk_buf); 4227 } 4228 return (0); 4229 } 4230 4231 /* 4232 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id 4233 * set (i.e. it's 0) so, create this function to compare link local scopes 4234 */ 4235 #ifdef INET6 4236 uint32_t 4237 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2) 4238 { 4239 struct sockaddr_in6 a, b; 4240 4241 /* save copies */ 4242 a = *addr1; 4243 b = *addr2; 4244 4245 if (a.sin6_scope_id == 0) 4246 if (sa6_recoverscope(&a)) { 4247 /* can't get scope, so can't match */ 4248 return (0); 4249 } 4250 if (b.sin6_scope_id == 0) 4251 if (sa6_recoverscope(&b)) { 4252 /* can't get scope, so can't match */ 4253 return (0); 4254 } 4255 if (a.sin6_scope_id != b.sin6_scope_id) 4256 return (0); 4257 4258 return (1); 4259 } 4260 4261 /* 4262 * returns a sockaddr_in6 with embedded scope recovered and removed 4263 */ 4264 struct sockaddr_in6 * 4265 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store) 4266 { 4267 /* check and strip embedded scope junk */ 4268 if (addr->sin6_family == AF_INET6) { 4269 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) { 4270 if (addr->sin6_scope_id == 0) { 4271 *store = *addr; 4272 if (!sa6_recoverscope(store)) { 4273 /* use the recovered scope */ 4274 addr = store; 4275 } 4276 } else { 4277 /* else, return the original "to" addr */ 4278 in6_clearscope(&addr->sin6_addr); 4279 } 4280 } 4281 } 4282 return (addr); 4283 } 4284 4285 #endif 4286 4287 /* 4288 * are the two addresses the same? currently a "scopeless" check returns: 1 4289 * if same, 0 if not 4290 */ 4291 int 4292 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2) 4293 { 4294 4295 /* must be valid */ 4296 if (sa1 == NULL || sa2 == NULL) 4297 return (0); 4298 4299 /* must be the same family */ 4300 if (sa1->sa_family != sa2->sa_family) 4301 return (0); 4302 4303 switch (sa1->sa_family) { 4304 #ifdef INET6 4305 case AF_INET6: 4306 { 4307 /* IPv6 addresses */ 4308 struct sockaddr_in6 *sin6_1, *sin6_2; 4309 4310 sin6_1 = (struct sockaddr_in6 *)sa1; 4311 sin6_2 = (struct sockaddr_in6 *)sa2; 4312 return (SCTP6_ARE_ADDR_EQUAL(sin6_1, 4313 sin6_2)); 4314 } 4315 #endif 4316 #ifdef INET 4317 case AF_INET: 4318 { 4319 /* IPv4 addresses */ 4320 struct sockaddr_in *sin_1, *sin_2; 4321 4322 sin_1 = (struct sockaddr_in *)sa1; 4323 sin_2 = (struct sockaddr_in *)sa2; 4324 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr); 4325 } 4326 #endif 4327 default: 4328 /* we don't do these... */ 4329 return (0); 4330 } 4331 } 4332 4333 void 4334 sctp_print_address(struct sockaddr *sa) 4335 { 4336 #ifdef INET6 4337 char ip6buf[INET6_ADDRSTRLEN]; 4338 4339 #endif 4340 4341 switch (sa->sa_family) { 4342 #ifdef INET6 4343 case AF_INET6: 4344 { 4345 struct sockaddr_in6 *sin6; 4346 4347 sin6 = (struct sockaddr_in6 *)sa; 4348 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n", 4349 ip6_sprintf(ip6buf, &sin6->sin6_addr), 4350 ntohs(sin6->sin6_port), 4351 sin6->sin6_scope_id); 4352 break; 4353 } 4354 #endif 4355 #ifdef INET 4356 case AF_INET: 4357 { 4358 struct sockaddr_in *sin; 4359 unsigned char *p; 4360 4361 sin = (struct sockaddr_in *)sa; 4362 p = (unsigned char *)&sin->sin_addr; 4363 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n", 4364 p[0], p[1], p[2], p[3], ntohs(sin->sin_port)); 4365 break; 4366 } 4367 #endif 4368 default: 4369 SCTP_PRINTF("?\n"); 4370 break; 4371 } 4372 } 4373 4374 void 4375 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 4376 struct sctp_inpcb *new_inp, 4377 struct sctp_tcb *stcb, 4378 int waitflags) 4379 { 4380 /* 4381 * go through our old INP and pull off any control structures that 4382 * belong to stcb and move then to the new inp. 4383 */ 4384 struct socket *old_so, *new_so; 4385 struct sctp_queued_to_read *control, *nctl; 4386 struct sctp_readhead tmp_queue; 4387 struct mbuf *m; 4388 int error = 0; 4389 4390 old_so = old_inp->sctp_socket; 4391 new_so = new_inp->sctp_socket; 4392 TAILQ_INIT(&tmp_queue); 4393 error = sblock(&old_so->so_rcv, waitflags); 4394 if (error) { 4395 /* 4396 * Gak, can't get sblock, we have a problem. data will be 4397 * left stranded.. and we don't dare look at it since the 4398 * other thread may be reading something. Oh well, its a 4399 * screwed up app that does a peeloff OR a accept while 4400 * reading from the main socket... actually its only the 4401 * peeloff() case, since I think read will fail on a 4402 * listening socket.. 4403 */ 4404 return; 4405 } 4406 /* lock the socket buffers */ 4407 SCTP_INP_READ_LOCK(old_inp); 4408 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) { 4409 /* Pull off all for out target stcb */ 4410 if (control->stcb == stcb) { 4411 /* remove it we want it */ 4412 TAILQ_REMOVE(&old_inp->read_queue, control, next); 4413 TAILQ_INSERT_TAIL(&tmp_queue, control, next); 4414 m = control->data; 4415 while (m) { 4416 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4417 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 4418 } 4419 sctp_sbfree(control, stcb, &old_so->so_rcv, m); 4420 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4421 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4422 } 4423 m = SCTP_BUF_NEXT(m); 4424 } 4425 } 4426 } 4427 SCTP_INP_READ_UNLOCK(old_inp); 4428 /* Remove the sb-lock on the old socket */ 4429 4430 sbunlock(&old_so->so_rcv); 4431 /* Now we move them over to the new socket buffer */ 4432 SCTP_INP_READ_LOCK(new_inp); 4433 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) { 4434 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next); 4435 m = control->data; 4436 while (m) { 4437 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4438 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4439 } 4440 sctp_sballoc(stcb, &new_so->so_rcv, m); 4441 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4442 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4443 } 4444 m = SCTP_BUF_NEXT(m); 4445 } 4446 } 4447 SCTP_INP_READ_UNLOCK(new_inp); 4448 } 4449 4450 void 4451 sctp_add_to_readq(struct sctp_inpcb *inp, 4452 struct sctp_tcb *stcb, 4453 struct sctp_queued_to_read *control, 4454 struct sockbuf *sb, 4455 int end, 4456 int inp_read_lock_held, 4457 int so_locked 4458 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 4459 SCTP_UNUSED 4460 #endif 4461 ) 4462 { 4463 /* 4464 * Here we must place the control on the end of the socket read 4465 * queue AND increment sb_cc so that select will work properly on 4466 * read. 4467 */ 4468 struct mbuf *m, *prev = NULL; 4469 4470 if (inp == NULL) { 4471 /* Gak, TSNH!! */ 4472 #ifdef INVARIANTS 4473 panic("Gak, inp NULL on add_to_readq"); 4474 #endif 4475 return; 4476 } 4477 if (inp_read_lock_held == 0) 4478 SCTP_INP_READ_LOCK(inp); 4479 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { 4480 sctp_free_remote_addr(control->whoFrom); 4481 if (control->data) { 4482 sctp_m_freem(control->data); 4483 control->data = NULL; 4484 } 4485 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control); 4486 if (inp_read_lock_held == 0) 4487 SCTP_INP_READ_UNLOCK(inp); 4488 return; 4489 } 4490 if (!(control->spec_flags & M_NOTIFICATION)) { 4491 atomic_add_int(&inp->total_recvs, 1); 4492 if (!control->do_not_ref_stcb) { 4493 atomic_add_int(&stcb->total_recvs, 1); 4494 } 4495 } 4496 m = control->data; 4497 control->held_length = 0; 4498 control->length = 0; 4499 while (m) { 4500 if (SCTP_BUF_LEN(m) == 0) { 4501 /* Skip mbufs with NO length */ 4502 if (prev == NULL) { 4503 /* First one */ 4504 control->data = sctp_m_free(m); 4505 m = control->data; 4506 } else { 4507 SCTP_BUF_NEXT(prev) = sctp_m_free(m); 4508 m = SCTP_BUF_NEXT(prev); 4509 } 4510 if (m == NULL) { 4511 control->tail_mbuf = prev; 4512 } 4513 continue; 4514 } 4515 prev = m; 4516 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4517 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4518 } 4519 sctp_sballoc(stcb, sb, m); 4520 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4521 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4522 } 4523 atomic_add_int(&control->length, SCTP_BUF_LEN(m)); 4524 m = SCTP_BUF_NEXT(m); 4525 } 4526 if (prev != NULL) { 4527 control->tail_mbuf = prev; 4528 } else { 4529 /* Everything got collapsed out?? */ 4530 sctp_free_remote_addr(control->whoFrom); 4531 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control); 4532 if (inp_read_lock_held == 0) 4533 SCTP_INP_READ_UNLOCK(inp); 4534 return; 4535 } 4536 if (end) { 4537 control->end_added = 1; 4538 } 4539 TAILQ_INSERT_TAIL(&inp->read_queue, control, next); 4540 if (inp_read_lock_held == 0) 4541 SCTP_INP_READ_UNLOCK(inp); 4542 if (inp && inp->sctp_socket) { 4543 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 4544 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 4545 } else { 4546 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4547 struct socket *so; 4548 4549 so = SCTP_INP_SO(inp); 4550 if (!so_locked) { 4551 if (stcb) { 4552 atomic_add_int(&stcb->asoc.refcnt, 1); 4553 SCTP_TCB_UNLOCK(stcb); 4554 } 4555 SCTP_SOCKET_LOCK(so, 1); 4556 if (stcb) { 4557 SCTP_TCB_LOCK(stcb); 4558 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4559 } 4560 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4561 SCTP_SOCKET_UNLOCK(so, 1); 4562 return; 4563 } 4564 } 4565 #endif 4566 sctp_sorwakeup(inp, inp->sctp_socket); 4567 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4568 if (!so_locked) { 4569 SCTP_SOCKET_UNLOCK(so, 1); 4570 } 4571 #endif 4572 } 4573 } 4574 } 4575 4576 4577 int 4578 sctp_append_to_readq(struct sctp_inpcb *inp, 4579 struct sctp_tcb *stcb, 4580 struct sctp_queued_to_read *control, 4581 struct mbuf *m, 4582 int end, 4583 int ctls_cumack, 4584 struct sockbuf *sb) 4585 { 4586 /* 4587 * A partial delivery API event is underway. OR we are appending on 4588 * the reassembly queue. 4589 * 4590 * If PDAPI this means we need to add m to the end of the data. 4591 * Increase the length in the control AND increment the sb_cc. 4592 * Otherwise sb is NULL and all we need to do is put it at the end 4593 * of the mbuf chain. 4594 */ 4595 int len = 0; 4596 struct mbuf *mm, *tail = NULL, *prev = NULL; 4597 4598 if (inp) { 4599 SCTP_INP_READ_LOCK(inp); 4600 } 4601 if (control == NULL) { 4602 get_out: 4603 if (inp) { 4604 SCTP_INP_READ_UNLOCK(inp); 4605 } 4606 return (-1); 4607 } 4608 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) { 4609 SCTP_INP_READ_UNLOCK(inp); 4610 return (0); 4611 } 4612 if (control->end_added) { 4613 /* huh this one is complete? */ 4614 goto get_out; 4615 } 4616 mm = m; 4617 if (mm == NULL) { 4618 goto get_out; 4619 } 4620 while (mm) { 4621 if (SCTP_BUF_LEN(mm) == 0) { 4622 /* Skip mbufs with NO lenght */ 4623 if (prev == NULL) { 4624 /* First one */ 4625 m = sctp_m_free(mm); 4626 mm = m; 4627 } else { 4628 SCTP_BUF_NEXT(prev) = sctp_m_free(mm); 4629 mm = SCTP_BUF_NEXT(prev); 4630 } 4631 continue; 4632 } 4633 prev = mm; 4634 len += SCTP_BUF_LEN(mm); 4635 if (sb) { 4636 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4637 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm)); 4638 } 4639 sctp_sballoc(stcb, sb, mm); 4640 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4641 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4642 } 4643 } 4644 mm = SCTP_BUF_NEXT(mm); 4645 } 4646 if (prev) { 4647 tail = prev; 4648 } else { 4649 /* Really there should always be a prev */ 4650 if (m == NULL) { 4651 /* Huh nothing left? */ 4652 #ifdef INVARIANTS 4653 panic("Nothing left to add?"); 4654 #else 4655 goto get_out; 4656 #endif 4657 } 4658 tail = m; 4659 } 4660 if (control->tail_mbuf) { 4661 /* append */ 4662 SCTP_BUF_NEXT(control->tail_mbuf) = m; 4663 control->tail_mbuf = tail; 4664 } else { 4665 /* nothing there */ 4666 #ifdef INVARIANTS 4667 if (control->data != NULL) { 4668 panic("This should NOT happen"); 4669 } 4670 #endif 4671 control->data = m; 4672 control->tail_mbuf = tail; 4673 } 4674 atomic_add_int(&control->length, len); 4675 if (end) { 4676 /* message is complete */ 4677 if (stcb && (control == stcb->asoc.control_pdapi)) { 4678 stcb->asoc.control_pdapi = NULL; 4679 } 4680 control->held_length = 0; 4681 control->end_added = 1; 4682 } 4683 if (stcb == NULL) { 4684 control->do_not_ref_stcb = 1; 4685 } 4686 /* 4687 * When we are appending in partial delivery, the cum-ack is used 4688 * for the actual pd-api highest tsn on this mbuf. The true cum-ack 4689 * is populated in the outbound sinfo structure from the true cumack 4690 * if the association exists... 4691 */ 4692 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack; 4693 if (inp) { 4694 SCTP_INP_READ_UNLOCK(inp); 4695 } 4696 if (inp && inp->sctp_socket) { 4697 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 4698 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 4699 } else { 4700 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4701 struct socket *so; 4702 4703 so = SCTP_INP_SO(inp); 4704 if (stcb) { 4705 atomic_add_int(&stcb->asoc.refcnt, 1); 4706 SCTP_TCB_UNLOCK(stcb); 4707 } 4708 SCTP_SOCKET_LOCK(so, 1); 4709 if (stcb) { 4710 SCTP_TCB_LOCK(stcb); 4711 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4712 } 4713 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4714 SCTP_SOCKET_UNLOCK(so, 1); 4715 return (0); 4716 } 4717 #endif 4718 sctp_sorwakeup(inp, inp->sctp_socket); 4719 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4720 SCTP_SOCKET_UNLOCK(so, 1); 4721 #endif 4722 } 4723 } 4724 return (0); 4725 } 4726 4727 4728 4729 /*************HOLD THIS COMMENT FOR PATCH FILE OF 4730 *************ALTERNATE ROUTING CODE 4731 */ 4732 4733 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF 4734 *************ALTERNATE ROUTING CODE 4735 */ 4736 4737 struct mbuf * 4738 sctp_generate_cause(uint16_t code, char *info) 4739 { 4740 struct mbuf *m; 4741 struct sctp_gen_error_cause *cause; 4742 size_t info_len, len; 4743 4744 if ((code == 0) || (info == NULL)) { 4745 return (NULL); 4746 } 4747 info_len = strlen(info); 4748 len = sizeof(struct sctp_paramhdr) + info_len; 4749 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); 4750 if (m != NULL) { 4751 SCTP_BUF_LEN(m) = len; 4752 cause = mtod(m, struct sctp_gen_error_cause *); 4753 cause->code = htons(code); 4754 cause->length = htons((uint16_t) len); 4755 memcpy(cause->info, info, info_len); 4756 } 4757 return (m); 4758 } 4759 4760 struct mbuf * 4761 sctp_generate_no_user_data_cause(uint32_t tsn) 4762 { 4763 struct mbuf *m; 4764 struct sctp_error_no_user_data *no_user_data_cause; 4765 size_t len; 4766 4767 len = sizeof(struct sctp_error_no_user_data); 4768 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); 4769 if (m != NULL) { 4770 SCTP_BUF_LEN(m) = len; 4771 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *); 4772 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA); 4773 no_user_data_cause->cause.length = htons((uint16_t) len); 4774 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */ 4775 } 4776 return (m); 4777 } 4778 4779 #ifdef SCTP_MBCNT_LOGGING 4780 void 4781 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc, 4782 struct sctp_tmit_chunk *tp1, int chk_cnt) 4783 { 4784 if (tp1->data == NULL) { 4785 return; 4786 } 4787 asoc->chunks_on_out_queue -= chk_cnt; 4788 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) { 4789 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE, 4790 asoc->total_output_queue_size, 4791 tp1->book_size, 4792 0, 4793 tp1->mbcnt); 4794 } 4795 if (asoc->total_output_queue_size >= tp1->book_size) { 4796 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size); 4797 } else { 4798 asoc->total_output_queue_size = 0; 4799 } 4800 4801 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) || 4802 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) { 4803 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { 4804 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size; 4805 } else { 4806 stcb->sctp_socket->so_snd.sb_cc = 0; 4807 4808 } 4809 } 4810 } 4811 4812 #endif 4813 4814 int 4815 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1, 4816 uint8_t sent, int so_locked 4817 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 4818 SCTP_UNUSED 4819 #endif 4820 ) 4821 { 4822 struct sctp_stream_out *strq; 4823 struct sctp_tmit_chunk *chk = NULL, *tp2; 4824 struct sctp_stream_queue_pending *sp; 4825 uint16_t stream = 0, seq = 0; 4826 uint8_t foundeom = 0; 4827 int ret_sz = 0; 4828 int notdone; 4829 int do_wakeup_routine = 0; 4830 4831 stream = tp1->rec.data.stream_number; 4832 seq = tp1->rec.data.stream_seq; 4833 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) { 4834 stcb->asoc.abandoned_sent[0]++; 4835 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++; 4836 stcb->asoc.strmout[stream].abandoned_sent[0]++; 4837 #if defined(SCTP_DETAILED_STR_STATS) 4838 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++; 4839 #endif 4840 } else { 4841 stcb->asoc.abandoned_unsent[0]++; 4842 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++; 4843 stcb->asoc.strmout[stream].abandoned_unsent[0]++; 4844 #if defined(SCTP_DETAILED_STR_STATS) 4845 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++; 4846 #endif 4847 } 4848 do { 4849 ret_sz += tp1->book_size; 4850 if (tp1->data != NULL) { 4851 if (tp1->sent < SCTP_DATAGRAM_RESEND) { 4852 sctp_flight_size_decrease(tp1); 4853 sctp_total_flight_decrease(stcb, tp1); 4854 } 4855 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 4856 stcb->asoc.peers_rwnd += tp1->send_size; 4857 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh); 4858 if (sent) { 4859 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); 4860 } else { 4861 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); 4862 } 4863 if (tp1->data) { 4864 sctp_m_freem(tp1->data); 4865 tp1->data = NULL; 4866 } 4867 do_wakeup_routine = 1; 4868 if (PR_SCTP_BUF_ENABLED(tp1->flags)) { 4869 stcb->asoc.sent_queue_cnt_removeable--; 4870 } 4871 } 4872 tp1->sent = SCTP_FORWARD_TSN_SKIP; 4873 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) == 4874 SCTP_DATA_NOT_FRAG) { 4875 /* not frag'ed we ae done */ 4876 notdone = 0; 4877 foundeom = 1; 4878 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 4879 /* end of frag, we are done */ 4880 notdone = 0; 4881 foundeom = 1; 4882 } else { 4883 /* 4884 * Its a begin or middle piece, we must mark all of 4885 * it 4886 */ 4887 notdone = 1; 4888 tp1 = TAILQ_NEXT(tp1, sctp_next); 4889 } 4890 } while (tp1 && notdone); 4891 if (foundeom == 0) { 4892 /* 4893 * The multi-part message was scattered across the send and 4894 * sent queue. 4895 */ 4896 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) { 4897 if ((tp1->rec.data.stream_number != stream) || 4898 (tp1->rec.data.stream_seq != seq)) { 4899 break; 4900 } 4901 /* 4902 * save to chk in case we have some on stream out 4903 * queue. If so and we have an un-transmitted one we 4904 * don't have to fudge the TSN. 4905 */ 4906 chk = tp1; 4907 ret_sz += tp1->book_size; 4908 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 4909 if (sent) { 4910 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); 4911 } else { 4912 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); 4913 } 4914 if (tp1->data) { 4915 sctp_m_freem(tp1->data); 4916 tp1->data = NULL; 4917 } 4918 /* No flight involved here book the size to 0 */ 4919 tp1->book_size = 0; 4920 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 4921 foundeom = 1; 4922 } 4923 do_wakeup_routine = 1; 4924 tp1->sent = SCTP_FORWARD_TSN_SKIP; 4925 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next); 4926 /* 4927 * on to the sent queue so we can wait for it to be 4928 * passed by. 4929 */ 4930 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1, 4931 sctp_next); 4932 stcb->asoc.send_queue_cnt--; 4933 stcb->asoc.sent_queue_cnt++; 4934 } 4935 } 4936 if (foundeom == 0) { 4937 /* 4938 * Still no eom found. That means there is stuff left on the 4939 * stream out queue.. yuck. 4940 */ 4941 SCTP_TCB_SEND_LOCK(stcb); 4942 strq = &stcb->asoc.strmout[stream]; 4943 sp = TAILQ_FIRST(&strq->outqueue); 4944 if (sp != NULL) { 4945 sp->discard_rest = 1; 4946 /* 4947 * We may need to put a chunk on the queue that 4948 * holds the TSN that would have been sent with the 4949 * LAST bit. 4950 */ 4951 if (chk == NULL) { 4952 /* Yep, we have to */ 4953 sctp_alloc_a_chunk(stcb, chk); 4954 if (chk == NULL) { 4955 /* 4956 * we are hosed. All we can do is 4957 * nothing.. which will cause an 4958 * abort if the peer is paying 4959 * attention. 4960 */ 4961 goto oh_well; 4962 } 4963 memset(chk, 0, sizeof(*chk)); 4964 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG; 4965 chk->sent = SCTP_FORWARD_TSN_SKIP; 4966 chk->asoc = &stcb->asoc; 4967 chk->rec.data.stream_seq = strq->next_sequence_send; 4968 chk->rec.data.stream_number = sp->stream; 4969 chk->rec.data.payloadtype = sp->ppid; 4970 chk->rec.data.context = sp->context; 4971 chk->flags = sp->act_flags; 4972 chk->whoTo = NULL; 4973 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1); 4974 strq->chunks_on_queues++; 4975 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next); 4976 stcb->asoc.sent_queue_cnt++; 4977 stcb->asoc.pr_sctp_cnt++; 4978 } else { 4979 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG; 4980 } 4981 strq->next_sequence_send++; 4982 oh_well: 4983 if (sp->data) { 4984 /* 4985 * Pull any data to free up the SB and allow 4986 * sender to "add more" while we will throw 4987 * away :-) 4988 */ 4989 sctp_free_spbufspace(stcb, &stcb->asoc, sp); 4990 ret_sz += sp->length; 4991 do_wakeup_routine = 1; 4992 sp->some_taken = 1; 4993 sctp_m_freem(sp->data); 4994 sp->data = NULL; 4995 sp->tail_mbuf = NULL; 4996 sp->length = 0; 4997 } 4998 } 4999 SCTP_TCB_SEND_UNLOCK(stcb); 5000 } 5001 if (do_wakeup_routine) { 5002 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 5003 struct socket *so; 5004 5005 so = SCTP_INP_SO(stcb->sctp_ep); 5006 if (!so_locked) { 5007 atomic_add_int(&stcb->asoc.refcnt, 1); 5008 SCTP_TCB_UNLOCK(stcb); 5009 SCTP_SOCKET_LOCK(so, 1); 5010 SCTP_TCB_LOCK(stcb); 5011 atomic_subtract_int(&stcb->asoc.refcnt, 1); 5012 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 5013 /* assoc was freed while we were unlocked */ 5014 SCTP_SOCKET_UNLOCK(so, 1); 5015 return (ret_sz); 5016 } 5017 } 5018 #endif 5019 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket); 5020 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 5021 if (!so_locked) { 5022 SCTP_SOCKET_UNLOCK(so, 1); 5023 } 5024 #endif 5025 } 5026 return (ret_sz); 5027 } 5028 5029 /* 5030 * checks to see if the given address, sa, is one that is currently known by 5031 * the kernel note: can't distinguish the same address on multiple interfaces 5032 * and doesn't handle multiple addresses with different zone/scope id's note: 5033 * ifa_ifwithaddr() compares the entire sockaddr struct 5034 */ 5035 struct sctp_ifa * 5036 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, 5037 int holds_lock) 5038 { 5039 struct sctp_laddr *laddr; 5040 5041 if (holds_lock == 0) { 5042 SCTP_INP_RLOCK(inp); 5043 } 5044 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 5045 if (laddr->ifa == NULL) 5046 continue; 5047 if (addr->sa_family != laddr->ifa->address.sa.sa_family) 5048 continue; 5049 #ifdef INET 5050 if (addr->sa_family == AF_INET) { 5051 if (((struct sockaddr_in *)addr)->sin_addr.s_addr == 5052 laddr->ifa->address.sin.sin_addr.s_addr) { 5053 /* found him. */ 5054 if (holds_lock == 0) { 5055 SCTP_INP_RUNLOCK(inp); 5056 } 5057 return (laddr->ifa); 5058 break; 5059 } 5060 } 5061 #endif 5062 #ifdef INET6 5063 if (addr->sa_family == AF_INET6) { 5064 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr, 5065 &laddr->ifa->address.sin6)) { 5066 /* found him. */ 5067 if (holds_lock == 0) { 5068 SCTP_INP_RUNLOCK(inp); 5069 } 5070 return (laddr->ifa); 5071 break; 5072 } 5073 } 5074 #endif 5075 } 5076 if (holds_lock == 0) { 5077 SCTP_INP_RUNLOCK(inp); 5078 } 5079 return (NULL); 5080 } 5081 5082 uint32_t 5083 sctp_get_ifa_hash_val(struct sockaddr *addr) 5084 { 5085 switch (addr->sa_family) { 5086 #ifdef INET 5087 case AF_INET: 5088 { 5089 struct sockaddr_in *sin; 5090 5091 sin = (struct sockaddr_in *)addr; 5092 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16)); 5093 } 5094 #endif 5095 #ifdef INET6 5096 case AF_INET6: 5097 { 5098 struct sockaddr_in6 *sin6; 5099 uint32_t hash_of_addr; 5100 5101 sin6 = (struct sockaddr_in6 *)addr; 5102 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] + 5103 sin6->sin6_addr.s6_addr32[1] + 5104 sin6->sin6_addr.s6_addr32[2] + 5105 sin6->sin6_addr.s6_addr32[3]); 5106 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16)); 5107 return (hash_of_addr); 5108 } 5109 #endif 5110 default: 5111 break; 5112 } 5113 return (0); 5114 } 5115 5116 struct sctp_ifa * 5117 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock) 5118 { 5119 struct sctp_ifa *sctp_ifap; 5120 struct sctp_vrf *vrf; 5121 struct sctp_ifalist *hash_head; 5122 uint32_t hash_of_addr; 5123 5124 if (holds_lock == 0) 5125 SCTP_IPI_ADDR_RLOCK(); 5126 5127 vrf = sctp_find_vrf(vrf_id); 5128 if (vrf == NULL) { 5129 if (holds_lock == 0) 5130 SCTP_IPI_ADDR_RUNLOCK(); 5131 return (NULL); 5132 } 5133 hash_of_addr = sctp_get_ifa_hash_val(addr); 5134 5135 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)]; 5136 if (hash_head == NULL) { 5137 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ", 5138 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark, 5139 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark)); 5140 sctp_print_address(addr); 5141 SCTP_PRINTF("No such bucket for address\n"); 5142 if (holds_lock == 0) 5143 SCTP_IPI_ADDR_RUNLOCK(); 5144 5145 return (NULL); 5146 } 5147 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) { 5148 if (addr->sa_family != sctp_ifap->address.sa.sa_family) 5149 continue; 5150 #ifdef INET 5151 if (addr->sa_family == AF_INET) { 5152 if (((struct sockaddr_in *)addr)->sin_addr.s_addr == 5153 sctp_ifap->address.sin.sin_addr.s_addr) { 5154 /* found him. */ 5155 if (holds_lock == 0) 5156 SCTP_IPI_ADDR_RUNLOCK(); 5157 return (sctp_ifap); 5158 break; 5159 } 5160 } 5161 #endif 5162 #ifdef INET6 5163 if (addr->sa_family == AF_INET6) { 5164 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr, 5165 &sctp_ifap->address.sin6)) { 5166 /* found him. */ 5167 if (holds_lock == 0) 5168 SCTP_IPI_ADDR_RUNLOCK(); 5169 return (sctp_ifap); 5170 break; 5171 } 5172 } 5173 #endif 5174 } 5175 if (holds_lock == 0) 5176 SCTP_IPI_ADDR_RUNLOCK(); 5177 return (NULL); 5178 } 5179 5180 static void 5181 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock, 5182 uint32_t rwnd_req) 5183 { 5184 /* User pulled some data, do we need a rwnd update? */ 5185 int r_unlocked = 0; 5186 uint32_t dif, rwnd; 5187 struct socket *so = NULL; 5188 5189 if (stcb == NULL) 5190 return; 5191 5192 atomic_add_int(&stcb->asoc.refcnt, 1); 5193 5194 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | 5195 SCTP_STATE_SHUTDOWN_RECEIVED | 5196 SCTP_STATE_SHUTDOWN_ACK_SENT)) { 5197 /* Pre-check If we are freeing no update */ 5198 goto no_lock; 5199 } 5200 SCTP_INP_INCR_REF(stcb->sctp_ep); 5201 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 5202 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { 5203 goto out; 5204 } 5205 so = stcb->sctp_socket; 5206 if (so == NULL) { 5207 goto out; 5208 } 5209 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far); 5210 /* Have you have freed enough to look */ 5211 *freed_so_far = 0; 5212 /* Yep, its worth a look and the lock overhead */ 5213 5214 /* Figure out what the rwnd would be */ 5215 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc); 5216 if (rwnd >= stcb->asoc.my_last_reported_rwnd) { 5217 dif = rwnd - stcb->asoc.my_last_reported_rwnd; 5218 } else { 5219 dif = 0; 5220 } 5221 if (dif >= rwnd_req) { 5222 if (hold_rlock) { 5223 SCTP_INP_READ_UNLOCK(stcb->sctp_ep); 5224 r_unlocked = 1; 5225 } 5226 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5227 /* 5228 * One last check before we allow the guy possibly 5229 * to get in. There is a race, where the guy has not 5230 * reached the gate. In that case 5231 */ 5232 goto out; 5233 } 5234 SCTP_TCB_LOCK(stcb); 5235 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5236 /* No reports here */ 5237 SCTP_TCB_UNLOCK(stcb); 5238 goto out; 5239 } 5240 SCTP_STAT_INCR(sctps_wu_sacks_sent); 5241 sctp_send_sack(stcb, SCTP_SO_LOCKED); 5242 5243 sctp_chunk_output(stcb->sctp_ep, stcb, 5244 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED); 5245 /* make sure no timer is running */ 5246 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, 5247 SCTP_FROM_SCTPUTIL + SCTP_LOC_6); 5248 SCTP_TCB_UNLOCK(stcb); 5249 } else { 5250 /* Update how much we have pending */ 5251 stcb->freed_by_sorcv_sincelast = dif; 5252 } 5253 out: 5254 if (so && r_unlocked && hold_rlock) { 5255 SCTP_INP_READ_LOCK(stcb->sctp_ep); 5256 } 5257 SCTP_INP_DECR_REF(stcb->sctp_ep); 5258 no_lock: 5259 atomic_add_int(&stcb->asoc.refcnt, -1); 5260 return; 5261 } 5262 5263 int 5264 sctp_sorecvmsg(struct socket *so, 5265 struct uio *uio, 5266 struct mbuf **mp, 5267 struct sockaddr *from, 5268 int fromlen, 5269 int *msg_flags, 5270 struct sctp_sndrcvinfo *sinfo, 5271 int filling_sinfo) 5272 { 5273 /* 5274 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO. 5275 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy 5276 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ?? 5277 * On the way out we may send out any combination of: 5278 * MSG_NOTIFICATION MSG_EOR 5279 * 5280 */ 5281 struct sctp_inpcb *inp = NULL; 5282 int my_len = 0; 5283 int cp_len = 0, error = 0; 5284 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL; 5285 struct mbuf *m = NULL; 5286 struct sctp_tcb *stcb = NULL; 5287 int wakeup_read_socket = 0; 5288 int freecnt_applied = 0; 5289 int out_flags = 0, in_flags = 0; 5290 int block_allowed = 1; 5291 uint32_t freed_so_far = 0; 5292 uint32_t copied_so_far = 0; 5293 int in_eeor_mode = 0; 5294 int no_rcv_needed = 0; 5295 uint32_t rwnd_req = 0; 5296 int hold_sblock = 0; 5297 int hold_rlock = 0; 5298 int slen = 0; 5299 uint32_t held_length = 0; 5300 int sockbuf_lock = 0; 5301 5302 if (uio == NULL) { 5303 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 5304 return (EINVAL); 5305 } 5306 if (msg_flags) { 5307 in_flags = *msg_flags; 5308 if (in_flags & MSG_PEEK) 5309 SCTP_STAT_INCR(sctps_read_peeks); 5310 } else { 5311 in_flags = 0; 5312 } 5313 slen = uio->uio_resid; 5314 5315 /* Pull in and set up our int flags */ 5316 if (in_flags & MSG_OOB) { 5317 /* Out of band's NOT supported */ 5318 return (EOPNOTSUPP); 5319 } 5320 if ((in_flags & MSG_PEEK) && (mp != NULL)) { 5321 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 5322 return (EINVAL); 5323 } 5324 if ((in_flags & (MSG_DONTWAIT 5325 | MSG_NBIO 5326 )) || 5327 SCTP_SO_IS_NBIO(so)) { 5328 block_allowed = 0; 5329 } 5330 /* setup the endpoint */ 5331 inp = (struct sctp_inpcb *)so->so_pcb; 5332 if (inp == NULL) { 5333 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT); 5334 return (EFAULT); 5335 } 5336 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT); 5337 /* Must be at least a MTU's worth */ 5338 if (rwnd_req < SCTP_MIN_RWND) 5339 rwnd_req = SCTP_MIN_RWND; 5340 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); 5341 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 5342 sctp_misc_ints(SCTP_SORECV_ENTER, 5343 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid); 5344 } 5345 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 5346 sctp_misc_ints(SCTP_SORECV_ENTERPL, 5347 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid); 5348 } 5349 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0)); 5350 if (error) { 5351 goto release_unlocked; 5352 } 5353 sockbuf_lock = 1; 5354 restart: 5355 5356 5357 restart_nosblocks: 5358 if (hold_sblock == 0) { 5359 SOCKBUF_LOCK(&so->so_rcv); 5360 hold_sblock = 1; 5361 } 5362 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 5363 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { 5364 goto out; 5365 } 5366 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) { 5367 if (so->so_error) { 5368 error = so->so_error; 5369 if ((in_flags & MSG_PEEK) == 0) 5370 so->so_error = 0; 5371 goto out; 5372 } else { 5373 if (so->so_rcv.sb_cc == 0) { 5374 /* indicate EOF */ 5375 error = 0; 5376 goto out; 5377 } 5378 } 5379 } 5380 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) { 5381 /* we need to wait for data */ 5382 if ((so->so_rcv.sb_cc == 0) && 5383 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 5384 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { 5385 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 5386 /* 5387 * For active open side clear flags for 5388 * re-use passive open is blocked by 5389 * connect. 5390 */ 5391 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { 5392 /* 5393 * You were aborted, passive side 5394 * always hits here 5395 */ 5396 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 5397 error = ECONNRESET; 5398 } 5399 so->so_state &= ~(SS_ISCONNECTING | 5400 SS_ISDISCONNECTING | 5401 SS_ISCONFIRMING | 5402 SS_ISCONNECTED); 5403 if (error == 0) { 5404 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { 5405 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); 5406 error = ENOTCONN; 5407 } 5408 } 5409 goto out; 5410 } 5411 } 5412 error = sbwait(&so->so_rcv); 5413 if (error) { 5414 goto out; 5415 } 5416 held_length = 0; 5417 goto restart_nosblocks; 5418 } else if (so->so_rcv.sb_cc == 0) { 5419 if (so->so_error) { 5420 error = so->so_error; 5421 if ((in_flags & MSG_PEEK) == 0) 5422 so->so_error = 0; 5423 } else { 5424 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 5425 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 5426 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 5427 /* 5428 * For active open side clear flags 5429 * for re-use passive open is 5430 * blocked by connect. 5431 */ 5432 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { 5433 /* 5434 * You were aborted, passive 5435 * side always hits here 5436 */ 5437 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 5438 error = ECONNRESET; 5439 } 5440 so->so_state &= ~(SS_ISCONNECTING | 5441 SS_ISDISCONNECTING | 5442 SS_ISCONFIRMING | 5443 SS_ISCONNECTED); 5444 if (error == 0) { 5445 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { 5446 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); 5447 error = ENOTCONN; 5448 } 5449 } 5450 goto out; 5451 } 5452 } 5453 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK); 5454 error = EWOULDBLOCK; 5455 } 5456 goto out; 5457 } 5458 if (hold_sblock == 1) { 5459 SOCKBUF_UNLOCK(&so->so_rcv); 5460 hold_sblock = 0; 5461 } 5462 /* we possibly have data we can read */ 5463 /* sa_ignore FREED_MEMORY */ 5464 control = TAILQ_FIRST(&inp->read_queue); 5465 if (control == NULL) { 5466 /* 5467 * This could be happening since the appender did the 5468 * increment but as not yet did the tailq insert onto the 5469 * read_queue 5470 */ 5471 if (hold_rlock == 0) { 5472 SCTP_INP_READ_LOCK(inp); 5473 } 5474 control = TAILQ_FIRST(&inp->read_queue); 5475 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) { 5476 #ifdef INVARIANTS 5477 panic("Huh, its non zero and nothing on control?"); 5478 #endif 5479 so->so_rcv.sb_cc = 0; 5480 } 5481 SCTP_INP_READ_UNLOCK(inp); 5482 hold_rlock = 0; 5483 goto restart; 5484 } 5485 if ((control->length == 0) && 5486 (control->do_not_ref_stcb)) { 5487 /* 5488 * Clean up code for freeing assoc that left behind a 5489 * pdapi.. maybe a peer in EEOR that just closed after 5490 * sending and never indicated a EOR. 5491 */ 5492 if (hold_rlock == 0) { 5493 hold_rlock = 1; 5494 SCTP_INP_READ_LOCK(inp); 5495 } 5496 control->held_length = 0; 5497 if (control->data) { 5498 /* Hmm there is data here .. fix */ 5499 struct mbuf *m_tmp; 5500 int cnt = 0; 5501 5502 m_tmp = control->data; 5503 while (m_tmp) { 5504 cnt += SCTP_BUF_LEN(m_tmp); 5505 if (SCTP_BUF_NEXT(m_tmp) == NULL) { 5506 control->tail_mbuf = m_tmp; 5507 control->end_added = 1; 5508 } 5509 m_tmp = SCTP_BUF_NEXT(m_tmp); 5510 } 5511 control->length = cnt; 5512 } else { 5513 /* remove it */ 5514 TAILQ_REMOVE(&inp->read_queue, control, next); 5515 /* Add back any hiddend data */ 5516 sctp_free_remote_addr(control->whoFrom); 5517 sctp_free_a_readq(stcb, control); 5518 } 5519 if (hold_rlock) { 5520 hold_rlock = 0; 5521 SCTP_INP_READ_UNLOCK(inp); 5522 } 5523 goto restart; 5524 } 5525 if ((control->length == 0) && 5526 (control->end_added == 1)) { 5527 /* 5528 * Do we also need to check for (control->pdapi_aborted == 5529 * 1)? 5530 */ 5531 if (hold_rlock == 0) { 5532 hold_rlock = 1; 5533 SCTP_INP_READ_LOCK(inp); 5534 } 5535 TAILQ_REMOVE(&inp->read_queue, control, next); 5536 if (control->data) { 5537 #ifdef INVARIANTS 5538 panic("control->data not null but control->length == 0"); 5539 #else 5540 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n"); 5541 sctp_m_freem(control->data); 5542 control->data = NULL; 5543 #endif 5544 } 5545 if (control->aux_data) { 5546 sctp_m_free(control->aux_data); 5547 control->aux_data = NULL; 5548 } 5549 sctp_free_remote_addr(control->whoFrom); 5550 sctp_free_a_readq(stcb, control); 5551 if (hold_rlock) { 5552 hold_rlock = 0; 5553 SCTP_INP_READ_UNLOCK(inp); 5554 } 5555 goto restart; 5556 } 5557 if (control->length == 0) { 5558 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) && 5559 (filling_sinfo)) { 5560 /* find a more suitable one then this */ 5561 ctl = TAILQ_NEXT(control, next); 5562 while (ctl) { 5563 if ((ctl->stcb != control->stcb) && (ctl->length) && 5564 (ctl->some_taken || 5565 (ctl->spec_flags & M_NOTIFICATION) || 5566 ((ctl->do_not_ref_stcb == 0) && 5567 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0))) 5568 ) { 5569 /*- 5570 * If we have a different TCB next, and there is data 5571 * present. If we have already taken some (pdapi), OR we can 5572 * ref the tcb and no delivery as started on this stream, we 5573 * take it. Note we allow a notification on a different 5574 * assoc to be delivered.. 5575 */ 5576 control = ctl; 5577 goto found_one; 5578 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) && 5579 (ctl->length) && 5580 ((ctl->some_taken) || 5581 ((ctl->do_not_ref_stcb == 0) && 5582 ((ctl->spec_flags & M_NOTIFICATION) == 0) && 5583 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) { 5584 /*- 5585 * If we have the same tcb, and there is data present, and we 5586 * have the strm interleave feature present. Then if we have 5587 * taken some (pdapi) or we can refer to tht tcb AND we have 5588 * not started a delivery for this stream, we can take it. 5589 * Note we do NOT allow a notificaiton on the same assoc to 5590 * be delivered. 5591 */ 5592 control = ctl; 5593 goto found_one; 5594 } 5595 ctl = TAILQ_NEXT(ctl, next); 5596 } 5597 } 5598 /* 5599 * if we reach here, not suitable replacement is available 5600 * <or> fragment interleave is NOT on. So stuff the sb_cc 5601 * into the our held count, and its time to sleep again. 5602 */ 5603 held_length = so->so_rcv.sb_cc; 5604 control->held_length = so->so_rcv.sb_cc; 5605 goto restart; 5606 } 5607 /* Clear the held length since there is something to read */ 5608 control->held_length = 0; 5609 if (hold_rlock) { 5610 SCTP_INP_READ_UNLOCK(inp); 5611 hold_rlock = 0; 5612 } 5613 found_one: 5614 /* 5615 * If we reach here, control has a some data for us to read off. 5616 * Note that stcb COULD be NULL. 5617 */ 5618 control->some_taken++; 5619 if (hold_sblock) { 5620 SOCKBUF_UNLOCK(&so->so_rcv); 5621 hold_sblock = 0; 5622 } 5623 stcb = control->stcb; 5624 if (stcb) { 5625 if ((control->do_not_ref_stcb == 0) && 5626 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) { 5627 if (freecnt_applied == 0) 5628 stcb = NULL; 5629 } else if (control->do_not_ref_stcb == 0) { 5630 /* you can't free it on me please */ 5631 /* 5632 * The lock on the socket buffer protects us so the 5633 * free code will stop. But since we used the 5634 * socketbuf lock and the sender uses the tcb_lock 5635 * to increment, we need to use the atomic add to 5636 * the refcnt 5637 */ 5638 if (freecnt_applied) { 5639 #ifdef INVARIANTS 5640 panic("refcnt already incremented"); 5641 #else 5642 SCTP_PRINTF("refcnt already incremented?\n"); 5643 #endif 5644 } else { 5645 atomic_add_int(&stcb->asoc.refcnt, 1); 5646 freecnt_applied = 1; 5647 } 5648 /* 5649 * Setup to remember how much we have not yet told 5650 * the peer our rwnd has opened up. Note we grab the 5651 * value from the tcb from last time. Note too that 5652 * sack sending clears this when a sack is sent, 5653 * which is fine. Once we hit the rwnd_req, we then 5654 * will go to the sctp_user_rcvd() that will not 5655 * lock until it KNOWs it MUST send a WUP-SACK. 5656 */ 5657 freed_so_far = stcb->freed_by_sorcv_sincelast; 5658 stcb->freed_by_sorcv_sincelast = 0; 5659 } 5660 } 5661 if (stcb && 5662 ((control->spec_flags & M_NOTIFICATION) == 0) && 5663 control->do_not_ref_stcb == 0) { 5664 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1; 5665 } 5666 /* First lets get off the sinfo and sockaddr info */ 5667 if ((sinfo) && filling_sinfo) { 5668 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo)); 5669 nxt = TAILQ_NEXT(control, next); 5670 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) || 5671 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) { 5672 struct sctp_extrcvinfo *s_extra; 5673 5674 s_extra = (struct sctp_extrcvinfo *)sinfo; 5675 if ((nxt) && 5676 (nxt->length)) { 5677 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL; 5678 if (nxt->sinfo_flags & SCTP_UNORDERED) { 5679 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED; 5680 } 5681 if (nxt->spec_flags & M_NOTIFICATION) { 5682 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION; 5683 } 5684 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id; 5685 s_extra->serinfo_next_length = nxt->length; 5686 s_extra->serinfo_next_ppid = nxt->sinfo_ppid; 5687 s_extra->serinfo_next_stream = nxt->sinfo_stream; 5688 if (nxt->tail_mbuf != NULL) { 5689 if (nxt->end_added) { 5690 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE; 5691 } 5692 } 5693 } else { 5694 /* 5695 * we explicitly 0 this, since the memcpy 5696 * got some other things beyond the older 5697 * sinfo_ that is on the control's structure 5698 * :-D 5699 */ 5700 nxt = NULL; 5701 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG; 5702 s_extra->serinfo_next_aid = 0; 5703 s_extra->serinfo_next_length = 0; 5704 s_extra->serinfo_next_ppid = 0; 5705 s_extra->serinfo_next_stream = 0; 5706 } 5707 } 5708 /* 5709 * update off the real current cum-ack, if we have an stcb. 5710 */ 5711 if ((control->do_not_ref_stcb == 0) && stcb) 5712 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn; 5713 /* 5714 * mask off the high bits, we keep the actual chunk bits in 5715 * there. 5716 */ 5717 sinfo->sinfo_flags &= 0x00ff; 5718 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) { 5719 sinfo->sinfo_flags |= SCTP_UNORDERED; 5720 } 5721 } 5722 #ifdef SCTP_ASOCLOG_OF_TSNS 5723 { 5724 int index, newindex; 5725 struct sctp_pcbtsn_rlog *entry; 5726 5727 do { 5728 index = inp->readlog_index; 5729 newindex = index + 1; 5730 if (newindex >= SCTP_READ_LOG_SIZE) { 5731 newindex = 0; 5732 } 5733 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0); 5734 entry = &inp->readlog[index]; 5735 entry->vtag = control->sinfo_assoc_id; 5736 entry->strm = control->sinfo_stream; 5737 entry->seq = control->sinfo_ssn; 5738 entry->sz = control->length; 5739 entry->flgs = control->sinfo_flags; 5740 } 5741 #endif 5742 if ((fromlen > 0) && (from != NULL)) { 5743 union sctp_sockstore store; 5744 size_t len; 5745 5746 switch (control->whoFrom->ro._l_addr.sa.sa_family) { 5747 #ifdef INET6 5748 case AF_INET6: 5749 len = sizeof(struct sockaddr_in6); 5750 store.sin6 = control->whoFrom->ro._l_addr.sin6; 5751 store.sin6.sin6_port = control->port_from; 5752 break; 5753 #endif 5754 #ifdef INET 5755 case AF_INET: 5756 #ifdef INET6 5757 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { 5758 len = sizeof(struct sockaddr_in6); 5759 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin, 5760 &store.sin6); 5761 store.sin6.sin6_port = control->port_from; 5762 } else { 5763 len = sizeof(struct sockaddr_in); 5764 store.sin = control->whoFrom->ro._l_addr.sin; 5765 store.sin.sin_port = control->port_from; 5766 } 5767 #else 5768 len = sizeof(struct sockaddr_in); 5769 store.sin = control->whoFrom->ro._l_addr.sin; 5770 store.sin.sin_port = control->port_from; 5771 #endif 5772 break; 5773 #endif 5774 default: 5775 len = 0; 5776 break; 5777 } 5778 memcpy(from, &store, min((size_t)fromlen, len)); 5779 #ifdef INET6 5780 { 5781 struct sockaddr_in6 lsa6, *from6; 5782 5783 from6 = (struct sockaddr_in6 *)from; 5784 sctp_recover_scope_mac(from6, (&lsa6)); 5785 } 5786 #endif 5787 } 5788 /* now copy out what data we can */ 5789 if (mp == NULL) { 5790 /* copy out each mbuf in the chain up to length */ 5791 get_more_data: 5792 m = control->data; 5793 while (m) { 5794 /* Move out all we can */ 5795 cp_len = (int)uio->uio_resid; 5796 my_len = (int)SCTP_BUF_LEN(m); 5797 if (cp_len > my_len) { 5798 /* not enough in this buf */ 5799 cp_len = my_len; 5800 } 5801 if (hold_rlock) { 5802 SCTP_INP_READ_UNLOCK(inp); 5803 hold_rlock = 0; 5804 } 5805 if (cp_len > 0) 5806 error = uiomove(mtod(m, char *), cp_len, uio); 5807 /* re-read */ 5808 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 5809 goto release; 5810 } 5811 if ((control->do_not_ref_stcb == 0) && stcb && 5812 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5813 no_rcv_needed = 1; 5814 } 5815 if (error) { 5816 /* error we are out of here */ 5817 goto release; 5818 } 5819 if ((SCTP_BUF_NEXT(m) == NULL) && 5820 (cp_len >= SCTP_BUF_LEN(m)) && 5821 ((control->end_added == 0) || 5822 (control->end_added && 5823 (TAILQ_NEXT(control, next) == NULL))) 5824 ) { 5825 SCTP_INP_READ_LOCK(inp); 5826 hold_rlock = 1; 5827 } 5828 if (cp_len == SCTP_BUF_LEN(m)) { 5829 if ((SCTP_BUF_NEXT(m) == NULL) && 5830 (control->end_added)) { 5831 out_flags |= MSG_EOR; 5832 if ((control->do_not_ref_stcb == 0) && 5833 (control->stcb != NULL) && 5834 ((control->spec_flags & M_NOTIFICATION) == 0)) 5835 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5836 } 5837 if (control->spec_flags & M_NOTIFICATION) { 5838 out_flags |= MSG_NOTIFICATION; 5839 } 5840 /* we ate up the mbuf */ 5841 if (in_flags & MSG_PEEK) { 5842 /* just looking */ 5843 m = SCTP_BUF_NEXT(m); 5844 copied_so_far += cp_len; 5845 } else { 5846 /* dispose of the mbuf */ 5847 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5848 sctp_sblog(&so->so_rcv, 5849 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 5850 } 5851 sctp_sbfree(control, stcb, &so->so_rcv, m); 5852 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5853 sctp_sblog(&so->so_rcv, 5854 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 5855 } 5856 copied_so_far += cp_len; 5857 freed_so_far += cp_len; 5858 freed_so_far += MSIZE; 5859 atomic_subtract_int(&control->length, cp_len); 5860 control->data = sctp_m_free(m); 5861 m = control->data; 5862 /* 5863 * been through it all, must hold sb 5864 * lock ok to null tail 5865 */ 5866 if (control->data == NULL) { 5867 #ifdef INVARIANTS 5868 if ((control->end_added == 0) || 5869 (TAILQ_NEXT(control, next) == NULL)) { 5870 /* 5871 * If the end is not 5872 * added, OR the 5873 * next is NOT null 5874 * we MUST have the 5875 * lock. 5876 */ 5877 if (mtx_owned(&inp->inp_rdata_mtx) == 0) { 5878 panic("Hmm we don't own the lock?"); 5879 } 5880 } 5881 #endif 5882 control->tail_mbuf = NULL; 5883 #ifdef INVARIANTS 5884 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) { 5885 panic("end_added, nothing left and no MSG_EOR"); 5886 } 5887 #endif 5888 } 5889 } 5890 } else { 5891 /* Do we need to trim the mbuf? */ 5892 if (control->spec_flags & M_NOTIFICATION) { 5893 out_flags |= MSG_NOTIFICATION; 5894 } 5895 if ((in_flags & MSG_PEEK) == 0) { 5896 SCTP_BUF_RESV_UF(m, cp_len); 5897 SCTP_BUF_LEN(m) -= cp_len; 5898 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5899 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len); 5900 } 5901 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len); 5902 if ((control->do_not_ref_stcb == 0) && 5903 stcb) { 5904 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len); 5905 } 5906 copied_so_far += cp_len; 5907 freed_so_far += cp_len; 5908 freed_so_far += MSIZE; 5909 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5910 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, 5911 SCTP_LOG_SBRESULT, 0); 5912 } 5913 atomic_subtract_int(&control->length, cp_len); 5914 } else { 5915 copied_so_far += cp_len; 5916 } 5917 } 5918 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) { 5919 break; 5920 } 5921 if (((stcb) && (in_flags & MSG_PEEK) == 0) && 5922 (control->do_not_ref_stcb == 0) && 5923 (freed_so_far >= rwnd_req)) { 5924 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5925 } 5926 } /* end while(m) */ 5927 /* 5928 * At this point we have looked at it all and we either have 5929 * a MSG_EOR/or read all the user wants... <OR> 5930 * control->length == 0. 5931 */ 5932 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) { 5933 /* we are done with this control */ 5934 if (control->length == 0) { 5935 if (control->data) { 5936 #ifdef INVARIANTS 5937 panic("control->data not null at read eor?"); 5938 #else 5939 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n"); 5940 sctp_m_freem(control->data); 5941 control->data = NULL; 5942 #endif 5943 } 5944 done_with_control: 5945 if (TAILQ_NEXT(control, next) == NULL) { 5946 /* 5947 * If we don't have a next we need a 5948 * lock, if there is a next 5949 * interrupt is filling ahead of us 5950 * and we don't need a lock to 5951 * remove this guy (which is the 5952 * head of the queue). 5953 */ 5954 if (hold_rlock == 0) { 5955 SCTP_INP_READ_LOCK(inp); 5956 hold_rlock = 1; 5957 } 5958 } 5959 TAILQ_REMOVE(&inp->read_queue, control, next); 5960 /* Add back any hiddend data */ 5961 if (control->held_length) { 5962 held_length = 0; 5963 control->held_length = 0; 5964 wakeup_read_socket = 1; 5965 } 5966 if (control->aux_data) { 5967 sctp_m_free(control->aux_data); 5968 control->aux_data = NULL; 5969 } 5970 no_rcv_needed = control->do_not_ref_stcb; 5971 sctp_free_remote_addr(control->whoFrom); 5972 control->data = NULL; 5973 sctp_free_a_readq(stcb, control); 5974 control = NULL; 5975 if ((freed_so_far >= rwnd_req) && 5976 (no_rcv_needed == 0)) 5977 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5978 5979 } else { 5980 /* 5981 * The user did not read all of this 5982 * message, turn off the returned MSG_EOR 5983 * since we are leaving more behind on the 5984 * control to read. 5985 */ 5986 #ifdef INVARIANTS 5987 if (control->end_added && 5988 (control->data == NULL) && 5989 (control->tail_mbuf == NULL)) { 5990 panic("Gak, control->length is corrupt?"); 5991 } 5992 #endif 5993 no_rcv_needed = control->do_not_ref_stcb; 5994 out_flags &= ~MSG_EOR; 5995 } 5996 } 5997 if (out_flags & MSG_EOR) { 5998 goto release; 5999 } 6000 if ((uio->uio_resid == 0) || 6001 ((in_eeor_mode) && 6002 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) { 6003 goto release; 6004 } 6005 /* 6006 * If I hit here the receiver wants more and this message is 6007 * NOT done (pd-api). So two questions. Can we block? if not 6008 * we are done. Did the user NOT set MSG_WAITALL? 6009 */ 6010 if (block_allowed == 0) { 6011 goto release; 6012 } 6013 /* 6014 * We need to wait for more data a few things: - We don't 6015 * sbunlock() so we don't get someone else reading. - We 6016 * must be sure to account for the case where what is added 6017 * is NOT to our control when we wakeup. 6018 */ 6019 6020 /* 6021 * Do we need to tell the transport a rwnd update might be 6022 * needed before we go to sleep? 6023 */ 6024 if (((stcb) && (in_flags & MSG_PEEK) == 0) && 6025 ((freed_so_far >= rwnd_req) && 6026 (control->do_not_ref_stcb == 0) && 6027 (no_rcv_needed == 0))) { 6028 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 6029 } 6030 wait_some_more: 6031 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) { 6032 goto release; 6033 } 6034 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) 6035 goto release; 6036 6037 if (hold_rlock == 1) { 6038 SCTP_INP_READ_UNLOCK(inp); 6039 hold_rlock = 0; 6040 } 6041 if (hold_sblock == 0) { 6042 SOCKBUF_LOCK(&so->so_rcv); 6043 hold_sblock = 1; 6044 } 6045 if ((copied_so_far) && (control->length == 0) && 6046 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) { 6047 goto release; 6048 } 6049 if (so->so_rcv.sb_cc <= control->held_length) { 6050 error = sbwait(&so->so_rcv); 6051 if (error) { 6052 goto release; 6053 } 6054 control->held_length = 0; 6055 } 6056 if (hold_sblock) { 6057 SOCKBUF_UNLOCK(&so->so_rcv); 6058 hold_sblock = 0; 6059 } 6060 if (control->length == 0) { 6061 /* still nothing here */ 6062 if (control->end_added == 1) { 6063 /* he aborted, or is done i.e.did a shutdown */ 6064 out_flags |= MSG_EOR; 6065 if (control->pdapi_aborted) { 6066 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 6067 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 6068 6069 out_flags |= MSG_TRUNC; 6070 } else { 6071 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 6072 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 6073 } 6074 goto done_with_control; 6075 } 6076 if (so->so_rcv.sb_cc > held_length) { 6077 control->held_length = so->so_rcv.sb_cc; 6078 held_length = 0; 6079 } 6080 goto wait_some_more; 6081 } else if (control->data == NULL) { 6082 /* 6083 * we must re-sync since data is probably being 6084 * added 6085 */ 6086 SCTP_INP_READ_LOCK(inp); 6087 if ((control->length > 0) && (control->data == NULL)) { 6088 /* 6089 * big trouble.. we have the lock and its 6090 * corrupt? 6091 */ 6092 #ifdef INVARIANTS 6093 panic("Impossible data==NULL length !=0"); 6094 #endif 6095 out_flags |= MSG_EOR; 6096 out_flags |= MSG_TRUNC; 6097 control->length = 0; 6098 SCTP_INP_READ_UNLOCK(inp); 6099 goto done_with_control; 6100 } 6101 SCTP_INP_READ_UNLOCK(inp); 6102 /* We will fall around to get more data */ 6103 } 6104 goto get_more_data; 6105 } else { 6106 /*- 6107 * Give caller back the mbuf chain, 6108 * store in uio_resid the length 6109 */ 6110 wakeup_read_socket = 0; 6111 if ((control->end_added == 0) || 6112 (TAILQ_NEXT(control, next) == NULL)) { 6113 /* Need to get rlock */ 6114 if (hold_rlock == 0) { 6115 SCTP_INP_READ_LOCK(inp); 6116 hold_rlock = 1; 6117 } 6118 } 6119 if (control->end_added) { 6120 out_flags |= MSG_EOR; 6121 if ((control->do_not_ref_stcb == 0) && 6122 (control->stcb != NULL) && 6123 ((control->spec_flags & M_NOTIFICATION) == 0)) 6124 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 6125 } 6126 if (control->spec_flags & M_NOTIFICATION) { 6127 out_flags |= MSG_NOTIFICATION; 6128 } 6129 uio->uio_resid = control->length; 6130 *mp = control->data; 6131 m = control->data; 6132 while (m) { 6133 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6134 sctp_sblog(&so->so_rcv, 6135 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 6136 } 6137 sctp_sbfree(control, stcb, &so->so_rcv, m); 6138 freed_so_far += SCTP_BUF_LEN(m); 6139 freed_so_far += MSIZE; 6140 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6141 sctp_sblog(&so->so_rcv, 6142 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 6143 } 6144 m = SCTP_BUF_NEXT(m); 6145 } 6146 control->data = control->tail_mbuf = NULL; 6147 control->length = 0; 6148 if (out_flags & MSG_EOR) { 6149 /* Done with this control */ 6150 goto done_with_control; 6151 } 6152 } 6153 release: 6154 if (hold_rlock == 1) { 6155 SCTP_INP_READ_UNLOCK(inp); 6156 hold_rlock = 0; 6157 } 6158 if (hold_sblock == 1) { 6159 SOCKBUF_UNLOCK(&so->so_rcv); 6160 hold_sblock = 0; 6161 } 6162 sbunlock(&so->so_rcv); 6163 sockbuf_lock = 0; 6164 6165 release_unlocked: 6166 if (hold_sblock) { 6167 SOCKBUF_UNLOCK(&so->so_rcv); 6168 hold_sblock = 0; 6169 } 6170 if ((stcb) && (in_flags & MSG_PEEK) == 0) { 6171 if ((freed_so_far >= rwnd_req) && 6172 (control && (control->do_not_ref_stcb == 0)) && 6173 (no_rcv_needed == 0)) 6174 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 6175 } 6176 out: 6177 if (msg_flags) { 6178 *msg_flags = out_flags; 6179 } 6180 if (((out_flags & MSG_EOR) == 0) && 6181 ((in_flags & MSG_PEEK) == 0) && 6182 (sinfo) && 6183 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) || 6184 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) { 6185 struct sctp_extrcvinfo *s_extra; 6186 6187 s_extra = (struct sctp_extrcvinfo *)sinfo; 6188 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG; 6189 } 6190 if (hold_rlock == 1) { 6191 SCTP_INP_READ_UNLOCK(inp); 6192 } 6193 if (hold_sblock) { 6194 SOCKBUF_UNLOCK(&so->so_rcv); 6195 } 6196 if (sockbuf_lock) { 6197 sbunlock(&so->so_rcv); 6198 } 6199 if (freecnt_applied) { 6200 /* 6201 * The lock on the socket buffer protects us so the free 6202 * code will stop. But since we used the socketbuf lock and 6203 * the sender uses the tcb_lock to increment, we need to use 6204 * the atomic add to the refcnt. 6205 */ 6206 if (stcb == NULL) { 6207 #ifdef INVARIANTS 6208 panic("stcb for refcnt has gone NULL?"); 6209 goto stage_left; 6210 #else 6211 goto stage_left; 6212 #endif 6213 } 6214 atomic_add_int(&stcb->asoc.refcnt, -1); 6215 /* Save the value back for next time */ 6216 stcb->freed_by_sorcv_sincelast = freed_so_far; 6217 } 6218 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 6219 if (stcb) { 6220 sctp_misc_ints(SCTP_SORECV_DONE, 6221 freed_so_far, 6222 ((uio) ? (slen - uio->uio_resid) : slen), 6223 stcb->asoc.my_rwnd, 6224 so->so_rcv.sb_cc); 6225 } else { 6226 sctp_misc_ints(SCTP_SORECV_DONE, 6227 freed_so_far, 6228 ((uio) ? (slen - uio->uio_resid) : slen), 6229 0, 6230 so->so_rcv.sb_cc); 6231 } 6232 } 6233 stage_left: 6234 if (wakeup_read_socket) { 6235 sctp_sorwakeup(inp, so); 6236 } 6237 return (error); 6238 } 6239 6240 6241 #ifdef SCTP_MBUF_LOGGING 6242 struct mbuf * 6243 sctp_m_free(struct mbuf *m) 6244 { 6245 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 6246 sctp_log_mb(m, SCTP_MBUF_IFREE); 6247 } 6248 return (m_free(m)); 6249 } 6250 6251 void 6252 sctp_m_freem(struct mbuf *mb) 6253 { 6254 while (mb != NULL) 6255 mb = sctp_m_free(mb); 6256 } 6257 6258 #endif 6259 6260 int 6261 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id) 6262 { 6263 /* 6264 * Given a local address. For all associations that holds the 6265 * address, request a peer-set-primary. 6266 */ 6267 struct sctp_ifa *ifa; 6268 struct sctp_laddr *wi; 6269 6270 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0); 6271 if (ifa == NULL) { 6272 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL); 6273 return (EADDRNOTAVAIL); 6274 } 6275 /* 6276 * Now that we have the ifa we must awaken the iterator with this 6277 * message. 6278 */ 6279 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); 6280 if (wi == NULL) { 6281 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 6282 return (ENOMEM); 6283 } 6284 /* Now incr the count and int wi structure */ 6285 SCTP_INCR_LADDR_COUNT(); 6286 bzero(wi, sizeof(*wi)); 6287 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time); 6288 wi->ifa = ifa; 6289 wi->action = SCTP_SET_PRIM_ADDR; 6290 atomic_add_int(&ifa->refcount, 1); 6291 6292 /* Now add it to the work queue */ 6293 SCTP_WQ_ADDR_LOCK(); 6294 /* 6295 * Should this really be a tailq? As it is we will process the 6296 * newest first :-0 6297 */ 6298 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); 6299 SCTP_WQ_ADDR_UNLOCK(); 6300 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, 6301 (struct sctp_inpcb *)NULL, 6302 (struct sctp_tcb *)NULL, 6303 (struct sctp_nets *)NULL); 6304 return (0); 6305 } 6306 6307 6308 int 6309 sctp_soreceive(struct socket *so, 6310 struct sockaddr **psa, 6311 struct uio *uio, 6312 struct mbuf **mp0, 6313 struct mbuf **controlp, 6314 int *flagsp) 6315 { 6316 int error, fromlen; 6317 uint8_t sockbuf[256]; 6318 struct sockaddr *from; 6319 struct sctp_extrcvinfo sinfo; 6320 int filling_sinfo = 1; 6321 struct sctp_inpcb *inp; 6322 6323 inp = (struct sctp_inpcb *)so->so_pcb; 6324 /* pickup the assoc we are reading from */ 6325 if (inp == NULL) { 6326 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6327 return (EINVAL); 6328 } 6329 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) && 6330 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) && 6331 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) || 6332 (controlp == NULL)) { 6333 /* user does not want the sndrcv ctl */ 6334 filling_sinfo = 0; 6335 } 6336 if (psa) { 6337 from = (struct sockaddr *)sockbuf; 6338 fromlen = sizeof(sockbuf); 6339 from->sa_len = 0; 6340 } else { 6341 from = NULL; 6342 fromlen = 0; 6343 } 6344 6345 if (filling_sinfo) { 6346 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo)); 6347 } 6348 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp, 6349 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo); 6350 if (controlp != NULL) { 6351 /* copy back the sinfo in a CMSG format */ 6352 if (filling_sinfo) 6353 *controlp = sctp_build_ctl_nchunk(inp, 6354 (struct sctp_sndrcvinfo *)&sinfo); 6355 else 6356 *controlp = NULL; 6357 } 6358 if (psa) { 6359 /* copy back the address info */ 6360 if (from && from->sa_len) { 6361 *psa = sodupsockaddr(from, M_NOWAIT); 6362 } else { 6363 *psa = NULL; 6364 } 6365 } 6366 return (error); 6367 } 6368 6369 6370 6371 6372 6373 int 6374 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, 6375 int totaddr, int *error) 6376 { 6377 int added = 0; 6378 int i; 6379 struct sctp_inpcb *inp; 6380 struct sockaddr *sa; 6381 size_t incr = 0; 6382 6383 #ifdef INET 6384 struct sockaddr_in *sin; 6385 6386 #endif 6387 #ifdef INET6 6388 struct sockaddr_in6 *sin6; 6389 6390 #endif 6391 6392 sa = addr; 6393 inp = stcb->sctp_ep; 6394 *error = 0; 6395 for (i = 0; i < totaddr; i++) { 6396 switch (sa->sa_family) { 6397 #ifdef INET 6398 case AF_INET: 6399 incr = sizeof(struct sockaddr_in); 6400 sin = (struct sockaddr_in *)sa; 6401 if ((sin->sin_addr.s_addr == INADDR_ANY) || 6402 (sin->sin_addr.s_addr == INADDR_BROADCAST) || 6403 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) { 6404 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6405 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 6406 SCTP_FROM_SCTPUTIL + SCTP_LOC_7); 6407 *error = EINVAL; 6408 goto out_now; 6409 } 6410 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { 6411 /* assoc gone no un-lock */ 6412 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 6413 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 6414 SCTP_FROM_SCTPUTIL + SCTP_LOC_8); 6415 *error = ENOBUFS; 6416 goto out_now; 6417 } 6418 added++; 6419 break; 6420 #endif 6421 #ifdef INET6 6422 case AF_INET6: 6423 incr = sizeof(struct sockaddr_in6); 6424 sin6 = (struct sockaddr_in6 *)sa; 6425 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 6426 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 6427 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6428 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 6429 SCTP_FROM_SCTPUTIL + SCTP_LOC_9); 6430 *error = EINVAL; 6431 goto out_now; 6432 } 6433 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { 6434 /* assoc gone no un-lock */ 6435 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 6436 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 6437 SCTP_FROM_SCTPUTIL + SCTP_LOC_10); 6438 *error = ENOBUFS; 6439 goto out_now; 6440 } 6441 added++; 6442 break; 6443 #endif 6444 default: 6445 break; 6446 } 6447 sa = (struct sockaddr *)((caddr_t)sa + incr); 6448 } 6449 out_now: 6450 return (added); 6451 } 6452 6453 struct sctp_tcb * 6454 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr, 6455 int *totaddr, int *num_v4, int *num_v6, int *error, 6456 int limit, int *bad_addr) 6457 { 6458 struct sockaddr *sa; 6459 struct sctp_tcb *stcb = NULL; 6460 size_t incr, at, i; 6461 6462 at = incr = 0; 6463 sa = addr; 6464 6465 *error = *num_v6 = *num_v4 = 0; 6466 /* account and validate addresses */ 6467 for (i = 0; i < (size_t)*totaddr; i++) { 6468 switch (sa->sa_family) { 6469 #ifdef INET 6470 case AF_INET: 6471 (*num_v4) += 1; 6472 incr = sizeof(struct sockaddr_in); 6473 if (sa->sa_len != incr) { 6474 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6475 *error = EINVAL; 6476 *bad_addr = 1; 6477 return (NULL); 6478 } 6479 break; 6480 #endif 6481 #ifdef INET6 6482 case AF_INET6: 6483 { 6484 struct sockaddr_in6 *sin6; 6485 6486 sin6 = (struct sockaddr_in6 *)sa; 6487 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6488 /* Must be non-mapped for connectx */ 6489 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6490 *error = EINVAL; 6491 *bad_addr = 1; 6492 return (NULL); 6493 } 6494 (*num_v6) += 1; 6495 incr = sizeof(struct sockaddr_in6); 6496 if (sa->sa_len != incr) { 6497 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6498 *error = EINVAL; 6499 *bad_addr = 1; 6500 return (NULL); 6501 } 6502 break; 6503 } 6504 #endif 6505 default: 6506 *totaddr = i; 6507 /* we are done */ 6508 break; 6509 } 6510 if (i == (size_t)*totaddr) { 6511 break; 6512 } 6513 SCTP_INP_INCR_REF(inp); 6514 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL); 6515 if (stcb != NULL) { 6516 /* Already have or am bring up an association */ 6517 return (stcb); 6518 } else { 6519 SCTP_INP_DECR_REF(inp); 6520 } 6521 if ((at + incr) > (size_t)limit) { 6522 *totaddr = i; 6523 break; 6524 } 6525 sa = (struct sockaddr *)((caddr_t)sa + incr); 6526 } 6527 return ((struct sctp_tcb *)NULL); 6528 } 6529 6530 /* 6531 * sctp_bindx(ADD) for one address. 6532 * assumes all arguments are valid/checked by caller. 6533 */ 6534 void 6535 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp, 6536 struct sockaddr *sa, sctp_assoc_t assoc_id, 6537 uint32_t vrf_id, int *error, void *p) 6538 { 6539 struct sockaddr *addr_touse; 6540 6541 #if defined(INET) && defined(INET6) 6542 struct sockaddr_in sin; 6543 6544 #endif 6545 6546 /* see if we're bound all already! */ 6547 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6548 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6549 *error = EINVAL; 6550 return; 6551 } 6552 addr_touse = sa; 6553 #ifdef INET6 6554 if (sa->sa_family == AF_INET6) { 6555 #ifdef INET 6556 struct sockaddr_in6 *sin6; 6557 6558 #endif 6559 if (sa->sa_len != sizeof(struct sockaddr_in6)) { 6560 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6561 *error = EINVAL; 6562 return; 6563 } 6564 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 6565 /* can only bind v6 on PF_INET6 sockets */ 6566 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6567 *error = EINVAL; 6568 return; 6569 } 6570 #ifdef INET 6571 sin6 = (struct sockaddr_in6 *)addr_touse; 6572 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6573 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6574 SCTP_IPV6_V6ONLY(inp)) { 6575 /* can't bind v4-mapped on PF_INET sockets */ 6576 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6577 *error = EINVAL; 6578 return; 6579 } 6580 in6_sin6_2_sin(&sin, sin6); 6581 addr_touse = (struct sockaddr *)&sin; 6582 } 6583 #endif 6584 } 6585 #endif 6586 #ifdef INET 6587 if (sa->sa_family == AF_INET) { 6588 if (sa->sa_len != sizeof(struct sockaddr_in)) { 6589 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6590 *error = EINVAL; 6591 return; 6592 } 6593 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6594 SCTP_IPV6_V6ONLY(inp)) { 6595 /* can't bind v4 on PF_INET sockets */ 6596 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6597 *error = EINVAL; 6598 return; 6599 } 6600 } 6601 #endif 6602 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { 6603 if (p == NULL) { 6604 /* Can't get proc for Net/Open BSD */ 6605 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6606 *error = EINVAL; 6607 return; 6608 } 6609 *error = sctp_inpcb_bind(so, addr_touse, NULL, p); 6610 return; 6611 } 6612 /* 6613 * No locks required here since bind and mgmt_ep_sa all do their own 6614 * locking. If we do something for the FIX: below we may need to 6615 * lock in that case. 6616 */ 6617 if (assoc_id == 0) { 6618 /* add the address */ 6619 struct sctp_inpcb *lep; 6620 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse; 6621 6622 /* validate the incoming port */ 6623 if ((lsin->sin_port != 0) && 6624 (lsin->sin_port != inp->sctp_lport)) { 6625 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6626 *error = EINVAL; 6627 return; 6628 } else { 6629 /* user specified 0 port, set it to existing port */ 6630 lsin->sin_port = inp->sctp_lport; 6631 } 6632 6633 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id); 6634 if (lep != NULL) { 6635 /* 6636 * We must decrement the refcount since we have the 6637 * ep already and are binding. No remove going on 6638 * here. 6639 */ 6640 SCTP_INP_DECR_REF(lep); 6641 } 6642 if (lep == inp) { 6643 /* already bound to it.. ok */ 6644 return; 6645 } else if (lep == NULL) { 6646 ((struct sockaddr_in *)addr_touse)->sin_port = 0; 6647 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse, 6648 SCTP_ADD_IP_ADDRESS, 6649 vrf_id, NULL); 6650 } else { 6651 *error = EADDRINUSE; 6652 } 6653 if (*error) 6654 return; 6655 } else { 6656 /* 6657 * FIX: decide whether we allow assoc based bindx 6658 */ 6659 } 6660 } 6661 6662 /* 6663 * sctp_bindx(DELETE) for one address. 6664 * assumes all arguments are valid/checked by caller. 6665 */ 6666 void 6667 sctp_bindx_delete_address(struct sctp_inpcb *inp, 6668 struct sockaddr *sa, sctp_assoc_t assoc_id, 6669 uint32_t vrf_id, int *error) 6670 { 6671 struct sockaddr *addr_touse; 6672 6673 #if defined(INET) && defined(INET6) 6674 struct sockaddr_in sin; 6675 6676 #endif 6677 6678 /* see if we're bound all already! */ 6679 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6680 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6681 *error = EINVAL; 6682 return; 6683 } 6684 addr_touse = sa; 6685 #ifdef INET6 6686 if (sa->sa_family == AF_INET6) { 6687 #ifdef INET 6688 struct sockaddr_in6 *sin6; 6689 6690 #endif 6691 6692 if (sa->sa_len != sizeof(struct sockaddr_in6)) { 6693 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6694 *error = EINVAL; 6695 return; 6696 } 6697 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 6698 /* can only bind v6 on PF_INET6 sockets */ 6699 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6700 *error = EINVAL; 6701 return; 6702 } 6703 #ifdef INET 6704 sin6 = (struct sockaddr_in6 *)addr_touse; 6705 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6706 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6707 SCTP_IPV6_V6ONLY(inp)) { 6708 /* can't bind mapped-v4 on PF_INET sockets */ 6709 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6710 *error = EINVAL; 6711 return; 6712 } 6713 in6_sin6_2_sin(&sin, sin6); 6714 addr_touse = (struct sockaddr *)&sin; 6715 } 6716 #endif 6717 } 6718 #endif 6719 #ifdef INET 6720 if (sa->sa_family == AF_INET) { 6721 if (sa->sa_len != sizeof(struct sockaddr_in)) { 6722 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6723 *error = EINVAL; 6724 return; 6725 } 6726 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6727 SCTP_IPV6_V6ONLY(inp)) { 6728 /* can't bind v4 on PF_INET sockets */ 6729 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6730 *error = EINVAL; 6731 return; 6732 } 6733 } 6734 #endif 6735 /* 6736 * No lock required mgmt_ep_sa does its own locking. If the FIX: 6737 * below is ever changed we may need to lock before calling 6738 * association level binding. 6739 */ 6740 if (assoc_id == 0) { 6741 /* delete the address */ 6742 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse, 6743 SCTP_DEL_IP_ADDRESS, 6744 vrf_id, NULL); 6745 } else { 6746 /* 6747 * FIX: decide whether we allow assoc based bindx 6748 */ 6749 } 6750 } 6751 6752 /* 6753 * returns the valid local address count for an assoc, taking into account 6754 * all scoping rules 6755 */ 6756 int 6757 sctp_local_addr_count(struct sctp_tcb *stcb) 6758 { 6759 int loopback_scope; 6760 6761 #if defined(INET) 6762 int ipv4_local_scope, ipv4_addr_legal; 6763 6764 #endif 6765 #if defined (INET6) 6766 int local_scope, site_scope, ipv6_addr_legal; 6767 6768 #endif 6769 struct sctp_vrf *vrf; 6770 struct sctp_ifn *sctp_ifn; 6771 struct sctp_ifa *sctp_ifa; 6772 int count = 0; 6773 6774 /* Turn on all the appropriate scopes */ 6775 loopback_scope = stcb->asoc.scope.loopback_scope; 6776 #if defined(INET) 6777 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope; 6778 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal; 6779 #endif 6780 #if defined(INET6) 6781 local_scope = stcb->asoc.scope.local_scope; 6782 site_scope = stcb->asoc.scope.site_scope; 6783 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal; 6784 #endif 6785 SCTP_IPI_ADDR_RLOCK(); 6786 vrf = sctp_find_vrf(stcb->asoc.vrf_id); 6787 if (vrf == NULL) { 6788 /* no vrf, no addresses */ 6789 SCTP_IPI_ADDR_RUNLOCK(); 6790 return (0); 6791 } 6792 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6793 /* 6794 * bound all case: go through all ifns on the vrf 6795 */ 6796 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 6797 if ((loopback_scope == 0) && 6798 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 6799 continue; 6800 } 6801 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 6802 if (sctp_is_addr_restricted(stcb, sctp_ifa)) 6803 continue; 6804 switch (sctp_ifa->address.sa.sa_family) { 6805 #ifdef INET 6806 case AF_INET: 6807 if (ipv4_addr_legal) { 6808 struct sockaddr_in *sin; 6809 6810 sin = &sctp_ifa->address.sin; 6811 if (sin->sin_addr.s_addr == 0) { 6812 /* 6813 * skip unspecified 6814 * addrs 6815 */ 6816 continue; 6817 } 6818 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred, 6819 &sin->sin_addr) != 0) { 6820 continue; 6821 } 6822 if ((ipv4_local_scope == 0) && 6823 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { 6824 continue; 6825 } 6826 /* count this one */ 6827 count++; 6828 } else { 6829 continue; 6830 } 6831 break; 6832 #endif 6833 #ifdef INET6 6834 case AF_INET6: 6835 if (ipv6_addr_legal) { 6836 struct sockaddr_in6 *sin6; 6837 6838 sin6 = &sctp_ifa->address.sin6; 6839 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 6840 continue; 6841 } 6842 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred, 6843 &sin6->sin6_addr) != 0) { 6844 continue; 6845 } 6846 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 6847 if (local_scope == 0) 6848 continue; 6849 if (sin6->sin6_scope_id == 0) { 6850 if (sa6_recoverscope(sin6) != 0) 6851 /* 6852 * 6853 * bad 6854 * 6855 * li 6856 * nk 6857 * 6858 * loc 6859 * al 6860 * 6861 * add 6862 * re 6863 * ss 6864 * */ 6865 continue; 6866 } 6867 } 6868 if ((site_scope == 0) && 6869 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { 6870 continue; 6871 } 6872 /* count this one */ 6873 count++; 6874 } 6875 break; 6876 #endif 6877 default: 6878 /* TSNH */ 6879 break; 6880 } 6881 } 6882 } 6883 } else { 6884 /* 6885 * subset bound case 6886 */ 6887 struct sctp_laddr *laddr; 6888 6889 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, 6890 sctp_nxt_addr) { 6891 if (sctp_is_addr_restricted(stcb, laddr->ifa)) { 6892 continue; 6893 } 6894 /* count this one */ 6895 count++; 6896 } 6897 } 6898 SCTP_IPI_ADDR_RUNLOCK(); 6899 return (count); 6900 } 6901 6902 #if defined(SCTP_LOCAL_TRACE_BUF) 6903 6904 void 6905 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) 6906 { 6907 uint32_t saveindex, newindex; 6908 6909 do { 6910 saveindex = SCTP_BASE_SYSCTL(sctp_log).index; 6911 if (saveindex >= SCTP_MAX_LOGGING_SIZE) { 6912 newindex = 1; 6913 } else { 6914 newindex = saveindex + 1; 6915 } 6916 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0); 6917 if (saveindex >= SCTP_MAX_LOGGING_SIZE) { 6918 saveindex = 0; 6919 } 6920 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT; 6921 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys; 6922 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a; 6923 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b; 6924 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c; 6925 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d; 6926 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e; 6927 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f; 6928 } 6929 6930 #endif 6931 static void 6932 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp, 6933 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED) 6934 { 6935 struct ip *iph; 6936 6937 #ifdef INET6 6938 struct ip6_hdr *ip6; 6939 6940 #endif 6941 struct mbuf *sp, *last; 6942 struct udphdr *uhdr; 6943 uint16_t port; 6944 6945 if ((m->m_flags & M_PKTHDR) == 0) { 6946 /* Can't handle one that is not a pkt hdr */ 6947 goto out; 6948 } 6949 /* Pull the src port */ 6950 iph = mtod(m, struct ip *); 6951 uhdr = (struct udphdr *)((caddr_t)iph + off); 6952 port = uhdr->uh_sport; 6953 /* 6954 * Split out the mbuf chain. Leave the IP header in m, place the 6955 * rest in the sp. 6956 */ 6957 sp = m_split(m, off, M_NOWAIT); 6958 if (sp == NULL) { 6959 /* Gak, drop packet, we can't do a split */ 6960 goto out; 6961 } 6962 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) { 6963 /* Gak, packet can't have an SCTP header in it - too small */ 6964 m_freem(sp); 6965 goto out; 6966 } 6967 /* Now pull up the UDP header and SCTP header together */ 6968 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr)); 6969 if (sp == NULL) { 6970 /* Gak pullup failed */ 6971 goto out; 6972 } 6973 /* Trim out the UDP header */ 6974 m_adj(sp, sizeof(struct udphdr)); 6975 6976 /* Now reconstruct the mbuf chain */ 6977 for (last = m; last->m_next; last = last->m_next); 6978 last->m_next = sp; 6979 m->m_pkthdr.len += sp->m_pkthdr.len; 6980 /* 6981 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP 6982 * checksum and it was valid. Since CSUM_DATA_VALID == 6983 * CSUM_SCTP_VALID this would imply that the HW also verified the 6984 * SCTP checksum. Therefore, clear the bit. 6985 */ 6986 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 6987 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n", 6988 m->m_pkthdr.len, 6989 if_name(m->m_pkthdr.rcvif), 6990 (int)m->m_pkthdr.csum_flags, CSUM_BITS); 6991 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID; 6992 iph = mtod(m, struct ip *); 6993 switch (iph->ip_v) { 6994 #ifdef INET 6995 case IPVERSION: 6996 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr)); 6997 sctp_input_with_port(m, off, port); 6998 break; 6999 #endif 7000 #ifdef INET6 7001 case IPV6_VERSION >> 4: 7002 ip6 = mtod(m, struct ip6_hdr *); 7003 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr)); 7004 sctp6_input_with_port(&m, &off, port); 7005 break; 7006 #endif 7007 default: 7008 goto out; 7009 break; 7010 } 7011 return; 7012 out: 7013 m_freem(m); 7014 } 7015 7016 void 7017 sctp_over_udp_stop(void) 7018 { 7019 /* 7020 * This function assumes sysctl caller holds sctp_sysctl_info_lock() 7021 * for writting! 7022 */ 7023 #ifdef INET 7024 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { 7025 soclose(SCTP_BASE_INFO(udp4_tun_socket)); 7026 SCTP_BASE_INFO(udp4_tun_socket) = NULL; 7027 } 7028 #endif 7029 #ifdef INET6 7030 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { 7031 soclose(SCTP_BASE_INFO(udp6_tun_socket)); 7032 SCTP_BASE_INFO(udp6_tun_socket) = NULL; 7033 } 7034 #endif 7035 } 7036 7037 int 7038 sctp_over_udp_start(void) 7039 { 7040 uint16_t port; 7041 int ret; 7042 7043 #ifdef INET 7044 struct sockaddr_in sin; 7045 7046 #endif 7047 #ifdef INET6 7048 struct sockaddr_in6 sin6; 7049 7050 #endif 7051 /* 7052 * This function assumes sysctl caller holds sctp_sysctl_info_lock() 7053 * for writting! 7054 */ 7055 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port); 7056 if (ntohs(port) == 0) { 7057 /* Must have a port set */ 7058 return (EINVAL); 7059 } 7060 #ifdef INET 7061 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { 7062 /* Already running -- must stop first */ 7063 return (EALREADY); 7064 } 7065 #endif 7066 #ifdef INET6 7067 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { 7068 /* Already running -- must stop first */ 7069 return (EALREADY); 7070 } 7071 #endif 7072 #ifdef INET 7073 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket), 7074 SOCK_DGRAM, IPPROTO_UDP, 7075 curthread->td_ucred, curthread))) { 7076 sctp_over_udp_stop(); 7077 return (ret); 7078 } 7079 /* Call the special UDP hook. */ 7080 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket), 7081 sctp_recv_udp_tunneled_packet, NULL))) { 7082 sctp_over_udp_stop(); 7083 return (ret); 7084 } 7085 /* Ok, we have a socket, bind it to the port. */ 7086 memset(&sin, 0, sizeof(struct sockaddr_in)); 7087 sin.sin_len = sizeof(struct sockaddr_in); 7088 sin.sin_family = AF_INET; 7089 sin.sin_port = htons(port); 7090 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket), 7091 (struct sockaddr *)&sin, curthread))) { 7092 sctp_over_udp_stop(); 7093 return (ret); 7094 } 7095 #endif 7096 #ifdef INET6 7097 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket), 7098 SOCK_DGRAM, IPPROTO_UDP, 7099 curthread->td_ucred, curthread))) { 7100 sctp_over_udp_stop(); 7101 return (ret); 7102 } 7103 /* Call the special UDP hook. */ 7104 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket), 7105 sctp_recv_udp_tunneled_packet, NULL))) { 7106 sctp_over_udp_stop(); 7107 return (ret); 7108 } 7109 /* Ok, we have a socket, bind it to the port. */ 7110 memset(&sin6, 0, sizeof(struct sockaddr_in6)); 7111 sin6.sin6_len = sizeof(struct sockaddr_in6); 7112 sin6.sin6_family = AF_INET6; 7113 sin6.sin6_port = htons(port); 7114 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket), 7115 (struct sockaddr *)&sin6, curthread))) { 7116 sctp_over_udp_stop(); 7117 return (ret); 7118 } 7119 #endif 7120 return (0); 7121 }
Cache object: 857c9ede17bc18a8897c5a029994da29
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