1 /*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * b) Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the distribution. 13 * 14 * c) Neither the name of Cisco Systems, Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* $KAME: sctputil.c,v 1.37 2005/03/07 23:26:09 itojun Exp $ */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 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_crc32.h> 49 #include <netinet/sctp_indata.h>/* for sctp_deliver_data() */ 50 #include <netinet/sctp_auth.h> 51 #include <netinet/sctp_asconf.h> 52 #include <netinet/sctp_cc_functions.h> 53 54 #define NUMBER_OF_MTU_SIZES 18 55 56 57 #ifndef KTR_SCTP 58 #define KTR_SCTP KTR_SUBSYS 59 #endif 60 61 void 62 sctp_sblog(struct sockbuf *sb, 63 struct sctp_tcb *stcb, int from, int incr) 64 { 65 struct sctp_cwnd_log sctp_clog; 66 67 sctp_clog.x.sb.stcb = stcb; 68 sctp_clog.x.sb.so_sbcc = sb->sb_cc; 69 if (stcb) 70 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc; 71 else 72 sctp_clog.x.sb.stcb_sbcc = 0; 73 sctp_clog.x.sb.incr = incr; 74 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 75 SCTP_LOG_EVENT_SB, 76 from, 77 sctp_clog.x.misc.log1, 78 sctp_clog.x.misc.log2, 79 sctp_clog.x.misc.log3, 80 sctp_clog.x.misc.log4); 81 } 82 83 void 84 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc) 85 { 86 struct sctp_cwnd_log sctp_clog; 87 88 sctp_clog.x.close.inp = (void *)inp; 89 sctp_clog.x.close.sctp_flags = inp->sctp_flags; 90 if (stcb) { 91 sctp_clog.x.close.stcb = (void *)stcb; 92 sctp_clog.x.close.state = (uint16_t) stcb->asoc.state; 93 } else { 94 sctp_clog.x.close.stcb = 0; 95 sctp_clog.x.close.state = 0; 96 } 97 sctp_clog.x.close.loc = loc; 98 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 99 SCTP_LOG_EVENT_CLOSE, 100 0, 101 sctp_clog.x.misc.log1, 102 sctp_clog.x.misc.log2, 103 sctp_clog.x.misc.log3, 104 sctp_clog.x.misc.log4); 105 } 106 107 108 void 109 rto_logging(struct sctp_nets *net, int from) 110 { 111 struct sctp_cwnd_log sctp_clog; 112 113 sctp_clog.x.rto.net = (void *)net; 114 sctp_clog.x.rto.rtt = net->prev_rtt; 115 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 116 SCTP_LOG_EVENT_RTT, 117 from, 118 sctp_clog.x.misc.log1, 119 sctp_clog.x.misc.log2, 120 sctp_clog.x.misc.log3, 121 sctp_clog.x.misc.log4); 122 123 } 124 125 void 126 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from) 127 { 128 struct sctp_cwnd_log sctp_clog; 129 130 sctp_clog.x.strlog.stcb = stcb; 131 sctp_clog.x.strlog.n_tsn = tsn; 132 sctp_clog.x.strlog.n_sseq = sseq; 133 sctp_clog.x.strlog.e_tsn = 0; 134 sctp_clog.x.strlog.e_sseq = 0; 135 sctp_clog.x.strlog.strm = stream; 136 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 137 SCTP_LOG_EVENT_STRM, 138 from, 139 sctp_clog.x.misc.log1, 140 sctp_clog.x.misc.log2, 141 sctp_clog.x.misc.log3, 142 sctp_clog.x.misc.log4); 143 144 } 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 } 164 165 166 void 167 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from) 168 { 169 struct sctp_cwnd_log sctp_clog; 170 171 sctp_clog.x.sack.cumack = cumack; 172 sctp_clog.x.sack.oldcumack = old_cumack; 173 sctp_clog.x.sack.tsn = tsn; 174 sctp_clog.x.sack.numGaps = gaps; 175 sctp_clog.x.sack.numDups = dups; 176 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 177 SCTP_LOG_EVENT_SACK, 178 from, 179 sctp_clog.x.misc.log1, 180 sctp_clog.x.misc.log2, 181 sctp_clog.x.misc.log3, 182 sctp_clog.x.misc.log4); 183 } 184 185 void 186 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from) 187 { 188 struct sctp_cwnd_log sctp_clog; 189 190 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, 204 int from) 205 { 206 struct sctp_cwnd_log sctp_clog; 207 208 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 } 220 221 222 void 223 sctp_log_mb(struct mbuf *m, int from) 224 { 225 struct sctp_cwnd_log sctp_clog; 226 227 sctp_clog.x.mb.mp = m; 228 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m)); 229 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m)); 230 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0); 231 if (SCTP_BUF_IS_EXTENDED(m)) { 232 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m); 233 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m)); 234 } else { 235 sctp_clog.x.mb.ext = 0; 236 sctp_clog.x.mb.refcnt = 0; 237 } 238 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 239 SCTP_LOG_EVENT_MBUF, 240 from, 241 sctp_clog.x.misc.log1, 242 sctp_clog.x.misc.log2, 243 sctp_clog.x.misc.log3, 244 sctp_clog.x.misc.log4); 245 } 246 247 248 void 249 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, 250 int from) 251 { 252 struct sctp_cwnd_log sctp_clog; 253 254 if (control == NULL) { 255 SCTP_PRINTF("Gak log of NULL?\n"); 256 return; 257 } 258 sctp_clog.x.strlog.stcb = control->stcb; 259 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn; 260 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn; 261 sctp_clog.x.strlog.strm = control->sinfo_stream; 262 if (poschk != NULL) { 263 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn; 264 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn; 265 } else { 266 sctp_clog.x.strlog.e_tsn = 0; 267 sctp_clog.x.strlog.e_sseq = 0; 268 } 269 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 270 SCTP_LOG_EVENT_STRM, 271 from, 272 sctp_clog.x.misc.log1, 273 sctp_clog.x.misc.log2, 274 sctp_clog.x.misc.log3, 275 sctp_clog.x.misc.log4); 276 277 } 278 279 void 280 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from) 281 { 282 struct sctp_cwnd_log sctp_clog; 283 284 sctp_clog.x.cwnd.net = net; 285 if (stcb->asoc.send_queue_cnt > 255) 286 sctp_clog.x.cwnd.cnt_in_send = 255; 287 else 288 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; 289 if (stcb->asoc.stream_queue_cnt > 255) 290 sctp_clog.x.cwnd.cnt_in_str = 255; 291 else 292 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; 293 294 if (net) { 295 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd; 296 sctp_clog.x.cwnd.inflight = net->flight_size; 297 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack; 298 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack; 299 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack; 300 } 301 if (SCTP_CWNDLOG_PRESEND == from) { 302 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd; 303 } 304 sctp_clog.x.cwnd.cwnd_augment = augment; 305 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 306 SCTP_LOG_EVENT_CWND, 307 from, 308 sctp_clog.x.misc.log1, 309 sctp_clog.x.misc.log2, 310 sctp_clog.x.misc.log3, 311 sctp_clog.x.misc.log4); 312 313 } 314 315 void 316 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from) 317 { 318 struct sctp_cwnd_log sctp_clog; 319 320 if (inp) { 321 sctp_clog.x.lock.sock = (void *)inp->sctp_socket; 322 323 } else { 324 sctp_clog.x.lock.sock = (void *)NULL; 325 } 326 sctp_clog.x.lock.inp = (void *)inp; 327 if (stcb) { 328 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx); 329 } else { 330 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN; 331 } 332 if (inp) { 333 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx); 334 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx); 335 } else { 336 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN; 337 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN; 338 } 339 sctp_clog.x.lock.info_lock = rw_wowned(&sctppcbinfo.ipi_ep_mtx); 340 if (inp->sctp_socket) { 341 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx)); 342 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx)); 343 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx)); 344 } else { 345 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN; 346 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN; 347 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN; 348 } 349 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 350 SCTP_LOG_LOCK_EVENT, 351 from, 352 sctp_clog.x.misc.log1, 353 sctp_clog.x.misc.log2, 354 sctp_clog.x.misc.log3, 355 sctp_clog.x.misc.log4); 356 357 } 358 359 void 360 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from) 361 { 362 struct sctp_cwnd_log sctp_clog; 363 364 sctp_clog.x.cwnd.net = net; 365 sctp_clog.x.cwnd.cwnd_new_value = error; 366 sctp_clog.x.cwnd.inflight = net->flight_size; 367 sctp_clog.x.cwnd.cwnd_augment = burst; 368 if (stcb->asoc.send_queue_cnt > 255) 369 sctp_clog.x.cwnd.cnt_in_send = 255; 370 else 371 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; 372 if (stcb->asoc.stream_queue_cnt > 255) 373 sctp_clog.x.cwnd.cnt_in_str = 255; 374 else 375 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; 376 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 377 SCTP_LOG_EVENT_MAXBURST, 378 from, 379 sctp_clog.x.misc.log1, 380 sctp_clog.x.misc.log2, 381 sctp_clog.x.misc.log3, 382 sctp_clog.x.misc.log4); 383 384 } 385 386 void 387 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead) 388 { 389 struct sctp_cwnd_log sctp_clog; 390 391 sctp_clog.x.rwnd.rwnd = peers_rwnd; 392 sctp_clog.x.rwnd.send_size = snd_size; 393 sctp_clog.x.rwnd.overhead = overhead; 394 sctp_clog.x.rwnd.new_rwnd = 0; 395 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 396 SCTP_LOG_EVENT_RWND, 397 from, 398 sctp_clog.x.misc.log1, 399 sctp_clog.x.misc.log2, 400 sctp_clog.x.misc.log3, 401 sctp_clog.x.misc.log4); 402 } 403 404 void 405 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval) 406 { 407 struct sctp_cwnd_log sctp_clog; 408 409 sctp_clog.x.rwnd.rwnd = peers_rwnd; 410 sctp_clog.x.rwnd.send_size = flight_size; 411 sctp_clog.x.rwnd.overhead = overhead; 412 sctp_clog.x.rwnd.new_rwnd = a_rwndval; 413 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 414 SCTP_LOG_EVENT_RWND, 415 from, 416 sctp_clog.x.misc.log1, 417 sctp_clog.x.misc.log2, 418 sctp_clog.x.misc.log3, 419 sctp_clog.x.misc.log4); 420 } 421 422 void 423 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt) 424 { 425 struct sctp_cwnd_log sctp_clog; 426 427 sctp_clog.x.mbcnt.total_queue_size = total_oq; 428 sctp_clog.x.mbcnt.size_change = book; 429 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q; 430 sctp_clog.x.mbcnt.mbcnt_change = mbcnt; 431 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 432 SCTP_LOG_EVENT_MBCNT, 433 from, 434 sctp_clog.x.misc.log1, 435 sctp_clog.x.misc.log2, 436 sctp_clog.x.misc.log3, 437 sctp_clog.x.misc.log4); 438 439 } 440 441 void 442 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d) 443 { 444 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 445 SCTP_LOG_MISC_EVENT, 446 from, 447 a, b, c, d); 448 } 449 450 void 451 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t cumtsn, uint32_t wake_cnt, int from) 452 { 453 struct sctp_cwnd_log sctp_clog; 454 455 sctp_clog.x.wake.stcb = (void *)stcb; 456 sctp_clog.x.wake.wake_cnt = wake_cnt; 457 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count; 458 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt; 459 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt; 460 461 if (stcb->asoc.stream_queue_cnt < 0xff) 462 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt; 463 else 464 sctp_clog.x.wake.stream_qcnt = 0xff; 465 466 if (stcb->asoc.chunks_on_out_queue < 0xff) 467 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue; 468 else 469 sctp_clog.x.wake.chunks_on_oque = 0xff; 470 471 sctp_clog.x.wake.sctpflags = 0; 472 /* set in the defered mode stuff */ 473 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) 474 sctp_clog.x.wake.sctpflags |= 1; 475 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) 476 sctp_clog.x.wake.sctpflags |= 2; 477 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) 478 sctp_clog.x.wake.sctpflags |= 4; 479 /* what about the sb */ 480 if (stcb->sctp_socket) { 481 struct socket *so = stcb->sctp_socket; 482 483 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff)); 484 } else { 485 sctp_clog.x.wake.sbflags = 0xff; 486 } 487 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 488 SCTP_LOG_EVENT_WAKE, 489 from, 490 sctp_clog.x.misc.log1, 491 sctp_clog.x.misc.log2, 492 sctp_clog.x.misc.log3, 493 sctp_clog.x.misc.log4); 494 495 } 496 497 void 498 sctp_log_block(uint8_t from, struct socket *so, struct sctp_association *asoc, int sendlen) 499 { 500 struct sctp_cwnd_log sctp_clog; 501 502 sctp_clog.x.blk.onsb = asoc->total_output_queue_size; 503 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt); 504 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd; 505 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt; 506 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue; 507 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024); 508 sctp_clog.x.blk.sndlen = sendlen; 509 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 510 SCTP_LOG_EVENT_BLOCK, 511 from, 512 sctp_clog.x.misc.log1, 513 sctp_clog.x.misc.log2, 514 sctp_clog.x.misc.log3, 515 sctp_clog.x.misc.log4); 516 517 } 518 519 int 520 sctp_fill_stat_log(void *optval, size_t *optsize) 521 { 522 /* May need to fix this if ktrdump does not work */ 523 return (0); 524 } 525 526 #ifdef SCTP_AUDITING_ENABLED 527 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2]; 528 static int sctp_audit_indx = 0; 529 530 static 531 void 532 sctp_print_audit_report(void) 533 { 534 int i; 535 int cnt; 536 537 cnt = 0; 538 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) { 539 if ((sctp_audit_data[i][0] == 0xe0) && 540 (sctp_audit_data[i][1] == 0x01)) { 541 cnt = 0; 542 SCTP_PRINTF("\n"); 543 } else if (sctp_audit_data[i][0] == 0xf0) { 544 cnt = 0; 545 SCTP_PRINTF("\n"); 546 } else if ((sctp_audit_data[i][0] == 0xc0) && 547 (sctp_audit_data[i][1] == 0x01)) { 548 SCTP_PRINTF("\n"); 549 cnt = 0; 550 } 551 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0], 552 (uint32_t) sctp_audit_data[i][1]); 553 cnt++; 554 if ((cnt % 14) == 0) 555 SCTP_PRINTF("\n"); 556 } 557 for (i = 0; i < sctp_audit_indx; i++) { 558 if ((sctp_audit_data[i][0] == 0xe0) && 559 (sctp_audit_data[i][1] == 0x01)) { 560 cnt = 0; 561 SCTP_PRINTF("\n"); 562 } else if (sctp_audit_data[i][0] == 0xf0) { 563 cnt = 0; 564 SCTP_PRINTF("\n"); 565 } else if ((sctp_audit_data[i][0] == 0xc0) && 566 (sctp_audit_data[i][1] == 0x01)) { 567 SCTP_PRINTF("\n"); 568 cnt = 0; 569 } 570 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0], 571 (uint32_t) sctp_audit_data[i][1]); 572 cnt++; 573 if ((cnt % 14) == 0) 574 SCTP_PRINTF("\n"); 575 } 576 SCTP_PRINTF("\n"); 577 } 578 579 void 580 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 581 struct sctp_nets *net) 582 { 583 int resend_cnt, tot_out, rep, tot_book_cnt; 584 struct sctp_nets *lnet; 585 struct sctp_tmit_chunk *chk; 586 587 sctp_audit_data[sctp_audit_indx][0] = 0xAA; 588 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from; 589 sctp_audit_indx++; 590 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 591 sctp_audit_indx = 0; 592 } 593 if (inp == NULL) { 594 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 595 sctp_audit_data[sctp_audit_indx][1] = 0x01; 596 sctp_audit_indx++; 597 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 598 sctp_audit_indx = 0; 599 } 600 return; 601 } 602 if (stcb == NULL) { 603 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 604 sctp_audit_data[sctp_audit_indx][1] = 0x02; 605 sctp_audit_indx++; 606 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 607 sctp_audit_indx = 0; 608 } 609 return; 610 } 611 sctp_audit_data[sctp_audit_indx][0] = 0xA1; 612 sctp_audit_data[sctp_audit_indx][1] = 613 (0x000000ff & stcb->asoc.sent_queue_retran_cnt); 614 sctp_audit_indx++; 615 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 616 sctp_audit_indx = 0; 617 } 618 rep = 0; 619 tot_book_cnt = 0; 620 resend_cnt = tot_out = 0; 621 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 622 if (chk->sent == SCTP_DATAGRAM_RESEND) { 623 resend_cnt++; 624 } else if (chk->sent < SCTP_DATAGRAM_RESEND) { 625 tot_out += chk->book_size; 626 tot_book_cnt++; 627 } 628 } 629 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) { 630 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 631 sctp_audit_data[sctp_audit_indx][1] = 0xA1; 632 sctp_audit_indx++; 633 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 634 sctp_audit_indx = 0; 635 } 636 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n", 637 resend_cnt, stcb->asoc.sent_queue_retran_cnt); 638 rep = 1; 639 stcb->asoc.sent_queue_retran_cnt = resend_cnt; 640 sctp_audit_data[sctp_audit_indx][0] = 0xA2; 641 sctp_audit_data[sctp_audit_indx][1] = 642 (0x000000ff & stcb->asoc.sent_queue_retran_cnt); 643 sctp_audit_indx++; 644 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 645 sctp_audit_indx = 0; 646 } 647 } 648 if (tot_out != stcb->asoc.total_flight) { 649 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 650 sctp_audit_data[sctp_audit_indx][1] = 0xA2; 651 sctp_audit_indx++; 652 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 653 sctp_audit_indx = 0; 654 } 655 rep = 1; 656 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out, 657 (int)stcb->asoc.total_flight); 658 stcb->asoc.total_flight = tot_out; 659 } 660 if (tot_book_cnt != stcb->asoc.total_flight_count) { 661 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 662 sctp_audit_data[sctp_audit_indx][1] = 0xA5; 663 sctp_audit_indx++; 664 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 665 sctp_audit_indx = 0; 666 } 667 rep = 1; 668 SCTP_PRINTF("tot_flt_book:%d\n", tot_book); 669 670 stcb->asoc.total_flight_count = tot_book_cnt; 671 } 672 tot_out = 0; 673 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 674 tot_out += lnet->flight_size; 675 } 676 if (tot_out != stcb->asoc.total_flight) { 677 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 678 sctp_audit_data[sctp_audit_indx][1] = 0xA3; 679 sctp_audit_indx++; 680 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 681 sctp_audit_indx = 0; 682 } 683 rep = 1; 684 SCTP_PRINTF("real flight:%d net total was %d\n", 685 stcb->asoc.total_flight, tot_out); 686 /* now corrective action */ 687 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 688 689 tot_out = 0; 690 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 691 if ((chk->whoTo == lnet) && 692 (chk->sent < SCTP_DATAGRAM_RESEND)) { 693 tot_out += chk->book_size; 694 } 695 } 696 if (lnet->flight_size != tot_out) { 697 SCTP_PRINTF("net:%x flight was %d corrected to %d\n", 698 (uint32_t) lnet, lnet->flight_size, 699 tot_out); 700 lnet->flight_size = tot_out; 701 } 702 } 703 } 704 if (rep) { 705 sctp_print_audit_report(); 706 } 707 } 708 709 void 710 sctp_audit_log(uint8_t ev, uint8_t fd) 711 { 712 713 sctp_audit_data[sctp_audit_indx][0] = ev; 714 sctp_audit_data[sctp_audit_indx][1] = fd; 715 sctp_audit_indx++; 716 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 717 sctp_audit_indx = 0; 718 } 719 } 720 721 #endif 722 723 /* 724 * a list of sizes based on typical mtu's, used only if next hop size not 725 * returned. 726 */ 727 static int sctp_mtu_sizes[] = { 728 68, 729 296, 730 508, 731 512, 732 544, 733 576, 734 1006, 735 1492, 736 1500, 737 1536, 738 2002, 739 2048, 740 4352, 741 4464, 742 8166, 743 17914, 744 32000, 745 65535 746 }; 747 748 void 749 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb) 750 { 751 struct sctp_association *asoc; 752 struct sctp_nets *net; 753 754 asoc = &stcb->asoc; 755 756 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer); 757 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer); 758 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer); 759 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer); 760 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer); 761 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer); 762 TAILQ_FOREACH(net, &asoc->nets, sctp_next) { 763 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer); 764 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer); 765 } 766 } 767 768 int 769 find_next_best_mtu(int totsz) 770 { 771 int i, perfer; 772 773 /* 774 * if we are in here we must find the next best fit based on the 775 * size of the dg that failed to be sent. 776 */ 777 perfer = 0; 778 for (i = 0; i < NUMBER_OF_MTU_SIZES; i++) { 779 if (totsz < sctp_mtu_sizes[i]) { 780 perfer = i - 1; 781 if (perfer < 0) 782 perfer = 0; 783 break; 784 } 785 } 786 return (sctp_mtu_sizes[perfer]); 787 } 788 789 void 790 sctp_fill_random_store(struct sctp_pcb *m) 791 { 792 /* 793 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and 794 * our counter. The result becomes our good random numbers and we 795 * then setup to give these out. Note that we do no locking to 796 * protect this. This is ok, since if competing folks call this we 797 * will get more gobbled gook in the random store which is what we 798 * want. There is a danger that two guys will use the same random 799 * numbers, but thats ok too since that is random as well :-> 800 */ 801 m->store_at = 0; 802 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers, 803 sizeof(m->random_numbers), (uint8_t *) & m->random_counter, 804 sizeof(m->random_counter), (uint8_t *) m->random_store); 805 m->random_counter++; 806 } 807 808 uint32_t 809 sctp_select_initial_TSN(struct sctp_pcb *inp) 810 { 811 /* 812 * A true implementation should use random selection process to get 813 * the initial stream sequence number, using RFC1750 as a good 814 * guideline 815 */ 816 uint32_t x, *xp; 817 uint8_t *p; 818 int store_at, new_store; 819 820 if (inp->initial_sequence_debug != 0) { 821 uint32_t ret; 822 823 ret = inp->initial_sequence_debug; 824 inp->initial_sequence_debug++; 825 return (ret); 826 } 827 retry: 828 store_at = inp->store_at; 829 new_store = store_at + sizeof(uint32_t); 830 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) { 831 new_store = 0; 832 } 833 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) { 834 goto retry; 835 } 836 if (new_store == 0) { 837 /* Refill the random store */ 838 sctp_fill_random_store(inp); 839 } 840 p = &inp->random_store[store_at]; 841 xp = (uint32_t *) p; 842 x = *xp; 843 return (x); 844 } 845 846 uint32_t 847 sctp_select_a_tag(struct sctp_inpcb *inp, int save_in_twait) 848 { 849 u_long x, not_done; 850 struct timeval now; 851 852 (void)SCTP_GETTIME_TIMEVAL(&now); 853 not_done = 1; 854 while (not_done) { 855 x = sctp_select_initial_TSN(&inp->sctp_ep); 856 if (x == 0) { 857 /* we never use 0 */ 858 continue; 859 } 860 if (sctp_is_vtag_good(inp, x, &now, save_in_twait)) { 861 not_done = 0; 862 } 863 } 864 return (x); 865 } 866 867 int 868 sctp_init_asoc(struct sctp_inpcb *m, struct sctp_tcb *stcb, 869 int for_a_init, uint32_t override_tag, uint32_t vrf_id) 870 { 871 struct sctp_association *asoc; 872 873 /* 874 * Anything set to zero is taken care of by the allocation routine's 875 * bzero 876 */ 877 878 /* 879 * Up front select what scoping to apply on addresses I tell my peer 880 * Not sure what to do with these right now, we will need to come up 881 * with a way to set them. We may need to pass them through from the 882 * caller in the sctp_aloc_assoc() function. 883 */ 884 int i; 885 886 asoc = &stcb->asoc; 887 /* init all variables to a known value. */ 888 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE); 889 asoc->max_burst = m->sctp_ep.max_burst; 890 asoc->heart_beat_delay = TICKS_TO_MSEC(m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]); 891 asoc->cookie_life = m->sctp_ep.def_cookie_life; 892 asoc->sctp_cmt_on_off = (uint8_t) sctp_cmt_on_off; 893 /* JRS 5/21/07 - Init CMT PF variables */ 894 asoc->sctp_cmt_pf = (uint8_t) sctp_cmt_pf; 895 asoc->sctp_frag_point = m->sctp_frag_point; 896 #ifdef INET 897 asoc->default_tos = m->ip_inp.inp.inp_ip_tos; 898 #else 899 asoc->default_tos = 0; 900 #endif 901 902 #ifdef INET6 903 asoc->default_flowlabel = ((struct in6pcb *)m)->in6p_flowinfo; 904 #else 905 asoc->default_flowlabel = 0; 906 #endif 907 asoc->sb_send_resv = 0; 908 if (override_tag) { 909 struct timeval now; 910 911 (void)SCTP_GETTIME_TIMEVAL(&now); 912 if (sctp_is_in_timewait(override_tag)) { 913 /* 914 * It must be in the time-wait hash, we put it there 915 * when we aloc one. If not the peer is playing 916 * games. 917 */ 918 asoc->my_vtag = override_tag; 919 } else { 920 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 921 panic("Huh is_in_timewait fails"); 922 return (ENOMEM); 923 } 924 925 } else { 926 asoc->my_vtag = sctp_select_a_tag(m, 1); 927 } 928 /* Get the nonce tags */ 929 asoc->my_vtag_nonce = sctp_select_a_tag(m, 0); 930 asoc->peer_vtag_nonce = sctp_select_a_tag(m, 0); 931 asoc->vrf_id = vrf_id; 932 933 if (sctp_is_feature_on(m, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) 934 asoc->hb_is_disabled = 1; 935 else 936 asoc->hb_is_disabled = 0; 937 938 #ifdef SCTP_ASOCLOG_OF_TSNS 939 asoc->tsn_in_at = 0; 940 asoc->tsn_out_at = 0; 941 asoc->tsn_in_wrapped = 0; 942 asoc->tsn_out_wrapped = 0; 943 asoc->cumack_log_at = 0; 944 asoc->cumack_log_atsnt = 0; 945 #endif 946 #ifdef SCTP_FS_SPEC_LOG 947 asoc->fs_index = 0; 948 #endif 949 asoc->refcnt = 0; 950 asoc->assoc_up_sent = 0; 951 asoc->assoc_id = asoc->my_vtag; 952 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq = 953 sctp_select_initial_TSN(&m->sctp_ep); 954 /* we are optimisitic here */ 955 asoc->peer_supports_pktdrop = 1; 956 957 asoc->sent_queue_retran_cnt = 0; 958 959 /* for CMT */ 960 asoc->last_net_data_came_from = NULL; 961 962 /* This will need to be adjusted */ 963 asoc->last_cwr_tsn = asoc->init_seq_number - 1; 964 asoc->last_acked_seq = asoc->init_seq_number - 1; 965 asoc->advanced_peer_ack_point = asoc->last_acked_seq; 966 asoc->asconf_seq_in = asoc->last_acked_seq; 967 968 /* here we are different, we hold the next one we expect */ 969 asoc->str_reset_seq_in = asoc->last_acked_seq + 1; 970 971 asoc->initial_init_rto_max = m->sctp_ep.initial_init_rto_max; 972 asoc->initial_rto = m->sctp_ep.initial_rto; 973 974 asoc->max_init_times = m->sctp_ep.max_init_times; 975 asoc->max_send_times = m->sctp_ep.max_send_times; 976 asoc->def_net_failure = m->sctp_ep.def_net_failure; 977 asoc->free_chunk_cnt = 0; 978 979 asoc->iam_blocking = 0; 980 /* ECN Nonce initialization */ 981 asoc->context = m->sctp_context; 982 asoc->def_send = m->def_send; 983 asoc->ecn_nonce_allowed = 0; 984 asoc->receiver_nonce_sum = 1; 985 asoc->nonce_sum_expect_base = 1; 986 asoc->nonce_sum_check = 1; 987 asoc->nonce_resync_tsn = 0; 988 asoc->nonce_wait_for_ecne = 0; 989 asoc->nonce_wait_tsn = 0; 990 asoc->delayed_ack = TICKS_TO_MSEC(m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); 991 asoc->sack_freq = m->sctp_ep.sctp_sack_freq; 992 asoc->pr_sctp_cnt = 0; 993 asoc->total_output_queue_size = 0; 994 995 if (m->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 996 struct in6pcb *inp6; 997 998 /* Its a V6 socket */ 999 inp6 = (struct in6pcb *)m; 1000 asoc->ipv6_addr_legal = 1; 1001 /* Now look at the binding flag to see if V4 will be legal */ 1002 if (SCTP_IPV6_V6ONLY(inp6) == 0) { 1003 asoc->ipv4_addr_legal = 1; 1004 } else { 1005 /* V4 addresses are NOT legal on the association */ 1006 asoc->ipv4_addr_legal = 0; 1007 } 1008 } else { 1009 /* Its a V4 socket, no - V6 */ 1010 asoc->ipv4_addr_legal = 1; 1011 asoc->ipv6_addr_legal = 0; 1012 } 1013 1014 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(m->sctp_socket), SCTP_MINIMAL_RWND); 1015 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(m->sctp_socket); 1016 1017 asoc->smallest_mtu = m->sctp_frag_point; 1018 #ifdef SCTP_PRINT_FOR_B_AND_M 1019 SCTP_PRINTF("smallest_mtu init'd with asoc to :%d\n", 1020 asoc->smallest_mtu); 1021 #endif 1022 asoc->minrto = m->sctp_ep.sctp_minrto; 1023 asoc->maxrto = m->sctp_ep.sctp_maxrto; 1024 1025 asoc->locked_on_sending = NULL; 1026 asoc->stream_locked_on = 0; 1027 asoc->ecn_echo_cnt_onq = 0; 1028 asoc->stream_locked = 0; 1029 1030 asoc->send_sack = 1; 1031 1032 LIST_INIT(&asoc->sctp_restricted_addrs); 1033 1034 TAILQ_INIT(&asoc->nets); 1035 TAILQ_INIT(&asoc->pending_reply_queue); 1036 TAILQ_INIT(&asoc->asconf_ack_sent); 1037 /* Setup to fill the hb random cache at first HB */ 1038 asoc->hb_random_idx = 4; 1039 1040 asoc->sctp_autoclose_ticks = m->sctp_ep.auto_close_time; 1041 1042 /* 1043 * JRS - Pick the default congestion control module based on the 1044 * sysctl. 1045 */ 1046 switch (m->sctp_ep.sctp_default_cc_module) { 1047 /* JRS - Standard TCP congestion control */ 1048 case SCTP_CC_RFC2581: 1049 { 1050 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581; 1051 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param; 1052 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack; 1053 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr; 1054 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout; 1055 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo; 1056 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped; 1057 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output; 1058 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer; 1059 break; 1060 } 1061 /* JRS - High Speed TCP congestion control (Floyd) */ 1062 case SCTP_CC_HSTCP: 1063 { 1064 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP; 1065 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param; 1066 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack; 1067 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr; 1068 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout; 1069 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo; 1070 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped; 1071 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output; 1072 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer; 1073 break; 1074 } 1075 /* JRS - HTCP congestion control */ 1076 case SCTP_CC_HTCP: 1077 { 1078 stcb->asoc.congestion_control_module = SCTP_CC_HTCP; 1079 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param; 1080 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack; 1081 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr; 1082 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout; 1083 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo; 1084 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped; 1085 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output; 1086 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer; 1087 break; 1088 } 1089 /* JRS - By default, use RFC2581 */ 1090 default: 1091 { 1092 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581; 1093 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param; 1094 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack; 1095 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr; 1096 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout; 1097 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo; 1098 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped; 1099 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output; 1100 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer; 1101 break; 1102 } 1103 } 1104 1105 /* 1106 * Now the stream parameters, here we allocate space for all streams 1107 * that we request by default. 1108 */ 1109 asoc->streamoutcnt = asoc->pre_open_streams = 1110 m->sctp_ep.pre_open_stream_count; 1111 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *, 1112 asoc->streamoutcnt * sizeof(struct sctp_stream_out), 1113 SCTP_M_STRMO); 1114 if (asoc->strmout == NULL) { 1115 /* big trouble no memory */ 1116 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1117 return (ENOMEM); 1118 } 1119 for (i = 0; i < asoc->streamoutcnt; i++) { 1120 /* 1121 * inbound side must be set to 0xffff, also NOTE when we get 1122 * the INIT-ACK back (for INIT sender) we MUST reduce the 1123 * count (streamoutcnt) but first check if we sent to any of 1124 * the upper streams that were dropped (if some were). Those 1125 * that were dropped must be notified to the upper layer as 1126 * failed to send. 1127 */ 1128 asoc->strmout[i].next_sequence_sent = 0x0; 1129 TAILQ_INIT(&asoc->strmout[i].outqueue); 1130 asoc->strmout[i].stream_no = i; 1131 asoc->strmout[i].last_msg_incomplete = 0; 1132 asoc->strmout[i].next_spoke.tqe_next = 0; 1133 asoc->strmout[i].next_spoke.tqe_prev = 0; 1134 } 1135 /* Now the mapping array */ 1136 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY; 1137 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size, 1138 SCTP_M_MAP); 1139 if (asoc->mapping_array == NULL) { 1140 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1141 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1142 return (ENOMEM); 1143 } 1144 memset(asoc->mapping_array, 0, asoc->mapping_array_size); 1145 /* Now the init of the other outqueues */ 1146 TAILQ_INIT(&asoc->free_chunks); 1147 TAILQ_INIT(&asoc->out_wheel); 1148 TAILQ_INIT(&asoc->control_send_queue); 1149 TAILQ_INIT(&asoc->send_queue); 1150 TAILQ_INIT(&asoc->sent_queue); 1151 TAILQ_INIT(&asoc->reasmqueue); 1152 TAILQ_INIT(&asoc->resetHead); 1153 asoc->max_inbound_streams = m->sctp_ep.max_open_streams_intome; 1154 TAILQ_INIT(&asoc->asconf_queue); 1155 /* authentication fields */ 1156 asoc->authinfo.random = NULL; 1157 asoc->authinfo.assoc_key = NULL; 1158 asoc->authinfo.assoc_keyid = 0; 1159 asoc->authinfo.recv_key = NULL; 1160 asoc->authinfo.recv_keyid = 0; 1161 LIST_INIT(&asoc->shared_keys); 1162 asoc->marked_retrans = 0; 1163 asoc->timoinit = 0; 1164 asoc->timodata = 0; 1165 asoc->timosack = 0; 1166 asoc->timoshutdown = 0; 1167 asoc->timoheartbeat = 0; 1168 asoc->timocookie = 0; 1169 asoc->timoshutdownack = 0; 1170 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time); 1171 asoc->discontinuity_time = asoc->start_time; 1172 /* 1173 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and 1174 * freed later whe the association is freed. 1175 */ 1176 return (0); 1177 } 1178 1179 int 1180 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed) 1181 { 1182 /* mapping array needs to grow */ 1183 uint8_t *new_array; 1184 uint32_t new_size; 1185 1186 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR); 1187 SCTP_MALLOC(new_array, uint8_t *, new_size, SCTP_M_MAP); 1188 if (new_array == NULL) { 1189 /* can't get more, forget it */ 1190 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", 1191 new_size); 1192 return (-1); 1193 } 1194 memset(new_array, 0, new_size); 1195 memcpy(new_array, asoc->mapping_array, asoc->mapping_array_size); 1196 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1197 asoc->mapping_array = new_array; 1198 asoc->mapping_array_size = new_size; 1199 return (0); 1200 } 1201 1202 #if defined(SCTP_USE_THREAD_BASED_ITERATOR) 1203 static void 1204 sctp_iterator_work(struct sctp_iterator *it) 1205 { 1206 int iteration_count = 0; 1207 int inp_skip = 0; 1208 1209 SCTP_ITERATOR_LOCK(); 1210 if (it->inp) { 1211 SCTP_INP_DECR_REF(it->inp); 1212 } 1213 if (it->inp == NULL) { 1214 /* iterator is complete */ 1215 done_with_iterator: 1216 SCTP_ITERATOR_UNLOCK(); 1217 if (it->function_atend != NULL) { 1218 (*it->function_atend) (it->pointer, it->val); 1219 } 1220 SCTP_FREE(it, SCTP_M_ITER); 1221 return; 1222 } 1223 select_a_new_ep: 1224 SCTP_INP_WLOCK(it->inp); 1225 while (((it->pcb_flags) && 1226 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) || 1227 ((it->pcb_features) && 1228 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) { 1229 /* endpoint flags or features don't match, so keep looking */ 1230 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1231 SCTP_INP_WUNLOCK(it->inp); 1232 goto done_with_iterator; 1233 } 1234 SCTP_INP_WUNLOCK(it->inp); 1235 it->inp = LIST_NEXT(it->inp, sctp_list); 1236 if (it->inp == NULL) { 1237 goto done_with_iterator; 1238 } 1239 SCTP_INP_WLOCK(it->inp); 1240 } 1241 1242 SCTP_INP_WUNLOCK(it->inp); 1243 SCTP_INP_RLOCK(it->inp); 1244 1245 /* now go through each assoc which is in the desired state */ 1246 if (it->done_current_ep == 0) { 1247 if (it->function_inp != NULL) 1248 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val); 1249 it->done_current_ep = 1; 1250 } 1251 if (it->stcb == NULL) { 1252 /* run the per instance function */ 1253 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list); 1254 } 1255 if ((inp_skip) || it->stcb == NULL) { 1256 if (it->function_inp_end != NULL) { 1257 inp_skip = (*it->function_inp_end) (it->inp, 1258 it->pointer, 1259 it->val); 1260 } 1261 SCTP_INP_RUNLOCK(it->inp); 1262 goto no_stcb; 1263 } 1264 while (it->stcb) { 1265 SCTP_TCB_LOCK(it->stcb); 1266 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) { 1267 /* not in the right state... keep looking */ 1268 SCTP_TCB_UNLOCK(it->stcb); 1269 goto next_assoc; 1270 } 1271 /* see if we have limited out the iterator loop */ 1272 iteration_count++; 1273 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) { 1274 /* Pause to let others grab the lock */ 1275 atomic_add_int(&it->stcb->asoc.refcnt, 1); 1276 SCTP_TCB_UNLOCK(it->stcb); 1277 1278 SCTP_INP_INCR_REF(it->inp); 1279 SCTP_INP_RUNLOCK(it->inp); 1280 SCTP_ITERATOR_UNLOCK(); 1281 SCTP_ITERATOR_LOCK(); 1282 SCTP_INP_RLOCK(it->inp); 1283 1284 SCTP_INP_DECR_REF(it->inp); 1285 SCTP_TCB_LOCK(it->stcb); 1286 atomic_add_int(&it->stcb->asoc.refcnt, -1); 1287 iteration_count = 0; 1288 } 1289 /* run function on this one */ 1290 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val); 1291 1292 /* 1293 * we lie here, it really needs to have its own type but 1294 * first I must verify that this won't effect things :-0 1295 */ 1296 if (it->no_chunk_output == 0) 1297 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1298 1299 SCTP_TCB_UNLOCK(it->stcb); 1300 next_assoc: 1301 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist); 1302 if (it->stcb == NULL) { 1303 /* Run last function */ 1304 if (it->function_inp_end != NULL) { 1305 inp_skip = (*it->function_inp_end) (it->inp, 1306 it->pointer, 1307 it->val); 1308 } 1309 } 1310 } 1311 SCTP_INP_RUNLOCK(it->inp); 1312 no_stcb: 1313 /* done with all assocs on this endpoint, move on to next endpoint */ 1314 it->done_current_ep = 0; 1315 SCTP_INP_WLOCK(it->inp); 1316 SCTP_INP_WUNLOCK(it->inp); 1317 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1318 it->inp = NULL; 1319 } else { 1320 SCTP_INP_INFO_RLOCK(); 1321 it->inp = LIST_NEXT(it->inp, sctp_list); 1322 SCTP_INP_INFO_RUNLOCK(); 1323 } 1324 if (it->inp == NULL) { 1325 goto done_with_iterator; 1326 } 1327 goto select_a_new_ep; 1328 } 1329 1330 void 1331 sctp_iterator_worker(void) 1332 { 1333 struct sctp_iterator *it = NULL; 1334 1335 /* This function is called with the WQ lock in place */ 1336 1337 sctppcbinfo.iterator_running = 1; 1338 again: 1339 it = TAILQ_FIRST(&sctppcbinfo.iteratorhead); 1340 while (it) { 1341 /* now lets work on this one */ 1342 TAILQ_REMOVE(&sctppcbinfo.iteratorhead, it, sctp_nxt_itr); 1343 SCTP_IPI_ITERATOR_WQ_UNLOCK(); 1344 sctp_iterator_work(it); 1345 SCTP_IPI_ITERATOR_WQ_LOCK(); 1346 /* sa_ignore FREED_MEMORY */ 1347 it = TAILQ_FIRST(&sctppcbinfo.iteratorhead); 1348 } 1349 if (TAILQ_FIRST(&sctppcbinfo.iteratorhead)) { 1350 goto again; 1351 } 1352 sctppcbinfo.iterator_running = 0; 1353 return; 1354 } 1355 1356 #endif 1357 1358 1359 static void 1360 sctp_handle_addr_wq(void) 1361 { 1362 /* deal with the ADDR wq from the rtsock calls */ 1363 struct sctp_laddr *wi; 1364 struct sctp_asconf_iterator *asc; 1365 1366 SCTP_MALLOC(asc, struct sctp_asconf_iterator *, 1367 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT); 1368 if (asc == NULL) { 1369 /* Try later, no memory */ 1370 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, 1371 (struct sctp_inpcb *)NULL, 1372 (struct sctp_tcb *)NULL, 1373 (struct sctp_nets *)NULL); 1374 return; 1375 } 1376 LIST_INIT(&asc->list_of_work); 1377 asc->cnt = 0; 1378 SCTP_IPI_ITERATOR_WQ_LOCK(); 1379 wi = LIST_FIRST(&sctppcbinfo.addr_wq); 1380 while (wi != NULL) { 1381 LIST_REMOVE(wi, sctp_nxt_addr); 1382 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr); 1383 asc->cnt++; 1384 wi = LIST_FIRST(&sctppcbinfo.addr_wq); 1385 } 1386 SCTP_IPI_ITERATOR_WQ_UNLOCK(); 1387 if (asc->cnt == 0) { 1388 SCTP_FREE(asc, SCTP_M_ASC_IT); 1389 } else { 1390 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep, 1391 sctp_asconf_iterator_stcb, 1392 NULL, /* No ep end for boundall */ 1393 SCTP_PCB_FLAGS_BOUNDALL, 1394 SCTP_PCB_ANY_FEATURES, 1395 SCTP_ASOC_ANY_STATE, 1396 (void *)asc, 0, 1397 sctp_asconf_iterator_end, NULL, 0); 1398 } 1399 } 1400 1401 int retcode = 0; 1402 int cur_oerr = 0; 1403 1404 void 1405 sctp_timeout_handler(void *t) 1406 { 1407 struct sctp_inpcb *inp; 1408 struct sctp_tcb *stcb; 1409 struct sctp_nets *net; 1410 struct sctp_timer *tmr; 1411 1412 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1413 struct socket *so; 1414 1415 #endif 1416 int did_output; 1417 struct sctp_iterator *it = NULL; 1418 1419 tmr = (struct sctp_timer *)t; 1420 inp = (struct sctp_inpcb *)tmr->ep; 1421 stcb = (struct sctp_tcb *)tmr->tcb; 1422 net = (struct sctp_nets *)tmr->net; 1423 did_output = 1; 1424 1425 #ifdef SCTP_AUDITING_ENABLED 1426 sctp_audit_log(0xF0, (uint8_t) tmr->type); 1427 sctp_auditing(3, inp, stcb, net); 1428 #endif 1429 1430 /* sanity checks... */ 1431 if (tmr->self != (void *)tmr) { 1432 /* 1433 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n", 1434 * tmr); 1435 */ 1436 return; 1437 } 1438 tmr->stopped_from = 0xa001; 1439 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) { 1440 /* 1441 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n", 1442 * tmr->type); 1443 */ 1444 return; 1445 } 1446 tmr->stopped_from = 0xa002; 1447 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) { 1448 return; 1449 } 1450 /* if this is an iterator timeout, get the struct and clear inp */ 1451 tmr->stopped_from = 0xa003; 1452 if (tmr->type == SCTP_TIMER_TYPE_ITERATOR) { 1453 it = (struct sctp_iterator *)inp; 1454 inp = NULL; 1455 } 1456 if (inp) { 1457 SCTP_INP_INCR_REF(inp); 1458 if ((inp->sctp_socket == 0) && 1459 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) && 1460 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) && 1461 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) && 1462 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) && 1463 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL)) 1464 ) { 1465 SCTP_INP_DECR_REF(inp); 1466 return; 1467 } 1468 } 1469 tmr->stopped_from = 0xa004; 1470 if (stcb) { 1471 atomic_add_int(&stcb->asoc.refcnt, 1); 1472 if (stcb->asoc.state == 0) { 1473 atomic_add_int(&stcb->asoc.refcnt, -1); 1474 if (inp) { 1475 SCTP_INP_DECR_REF(inp); 1476 } 1477 return; 1478 } 1479 } 1480 tmr->stopped_from = 0xa005; 1481 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type); 1482 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1483 if (inp) { 1484 SCTP_INP_DECR_REF(inp); 1485 } 1486 if (stcb) { 1487 atomic_add_int(&stcb->asoc.refcnt, -1); 1488 } 1489 return; 1490 } 1491 tmr->stopped_from = 0xa006; 1492 1493 if (stcb) { 1494 SCTP_TCB_LOCK(stcb); 1495 atomic_add_int(&stcb->asoc.refcnt, -1); 1496 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) && 1497 ((stcb->asoc.state == 0) || 1498 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) { 1499 SCTP_TCB_UNLOCK(stcb); 1500 if (inp) { 1501 SCTP_INP_DECR_REF(inp); 1502 } 1503 return; 1504 } 1505 } 1506 /* record in stopped what t-o occured */ 1507 tmr->stopped_from = tmr->type; 1508 1509 /* mark as being serviced now */ 1510 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 1511 /* 1512 * Callout has been rescheduled. 1513 */ 1514 goto get_out; 1515 } 1516 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1517 /* 1518 * Not active, so no action. 1519 */ 1520 goto get_out; 1521 } 1522 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer); 1523 1524 /* call the handler for the appropriate timer type */ 1525 switch (tmr->type) { 1526 case SCTP_TIMER_TYPE_ZERO_COPY: 1527 if (inp == NULL) { 1528 break; 1529 } 1530 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 1531 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 1532 } 1533 break; 1534 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 1535 if (inp == NULL) { 1536 break; 1537 } 1538 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 1539 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket); 1540 } 1541 break; 1542 case SCTP_TIMER_TYPE_ADDR_WQ: 1543 sctp_handle_addr_wq(); 1544 break; 1545 case SCTP_TIMER_TYPE_ITERATOR: 1546 SCTP_STAT_INCR(sctps_timoiterator); 1547 sctp_iterator_timer(it); 1548 break; 1549 case SCTP_TIMER_TYPE_SEND: 1550 if ((stcb == NULL) || (inp == NULL)) { 1551 break; 1552 } 1553 SCTP_STAT_INCR(sctps_timodata); 1554 stcb->asoc.timodata++; 1555 stcb->asoc.num_send_timers_up--; 1556 if (stcb->asoc.num_send_timers_up < 0) { 1557 stcb->asoc.num_send_timers_up = 0; 1558 } 1559 SCTP_TCB_LOCK_ASSERT(stcb); 1560 cur_oerr = stcb->asoc.overall_error_count; 1561 retcode = sctp_t3rxt_timer(inp, stcb, net); 1562 if (retcode) { 1563 /* no need to unlock on tcb its gone */ 1564 1565 goto out_decr; 1566 } 1567 SCTP_TCB_LOCK_ASSERT(stcb); 1568 #ifdef SCTP_AUDITING_ENABLED 1569 sctp_auditing(4, inp, stcb, net); 1570 #endif 1571 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1572 if ((stcb->asoc.num_send_timers_up == 0) && 1573 (stcb->asoc.sent_queue_cnt > 0) 1574 ) { 1575 struct sctp_tmit_chunk *chk; 1576 1577 /* 1578 * safeguard. If there on some on the sent queue 1579 * somewhere but no timers running something is 1580 * wrong... so we start a timer on the first chunk 1581 * on the send queue on whatever net it is sent to. 1582 */ 1583 chk = TAILQ_FIRST(&stcb->asoc.sent_queue); 1584 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, 1585 chk->whoTo); 1586 } 1587 break; 1588 case SCTP_TIMER_TYPE_INIT: 1589 if ((stcb == NULL) || (inp == NULL)) { 1590 break; 1591 } 1592 SCTP_STAT_INCR(sctps_timoinit); 1593 stcb->asoc.timoinit++; 1594 if (sctp_t1init_timer(inp, stcb, net)) { 1595 /* no need to unlock on tcb its gone */ 1596 goto out_decr; 1597 } 1598 /* We do output but not here */ 1599 did_output = 0; 1600 break; 1601 case SCTP_TIMER_TYPE_RECV: 1602 if ((stcb == NULL) || (inp == NULL)) { 1603 break; 1604 } { 1605 int abort_flag; 1606 1607 SCTP_STAT_INCR(sctps_timosack); 1608 stcb->asoc.timosack++; 1609 if (stcb->asoc.cumulative_tsn != stcb->asoc.highest_tsn_inside_map) 1610 sctp_sack_check(stcb, 0, 0, &abort_flag); 1611 sctp_send_sack(stcb); 1612 } 1613 #ifdef SCTP_AUDITING_ENABLED 1614 sctp_auditing(4, inp, stcb, net); 1615 #endif 1616 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED); 1617 break; 1618 case SCTP_TIMER_TYPE_SHUTDOWN: 1619 if ((stcb == NULL) || (inp == NULL)) { 1620 break; 1621 } 1622 if (sctp_shutdown_timer(inp, stcb, net)) { 1623 /* no need to unlock on tcb its gone */ 1624 goto out_decr; 1625 } 1626 SCTP_STAT_INCR(sctps_timoshutdown); 1627 stcb->asoc.timoshutdown++; 1628 #ifdef SCTP_AUDITING_ENABLED 1629 sctp_auditing(4, inp, stcb, net); 1630 #endif 1631 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED); 1632 break; 1633 case SCTP_TIMER_TYPE_HEARTBEAT: 1634 { 1635 struct sctp_nets *lnet; 1636 int cnt_of_unconf = 0; 1637 1638 if ((stcb == NULL) || (inp == NULL)) { 1639 break; 1640 } 1641 SCTP_STAT_INCR(sctps_timoheartbeat); 1642 stcb->asoc.timoheartbeat++; 1643 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 1644 if ((lnet->dest_state & SCTP_ADDR_UNCONFIRMED) && 1645 (lnet->dest_state & SCTP_ADDR_REACHABLE)) { 1646 cnt_of_unconf++; 1647 } 1648 } 1649 if (cnt_of_unconf == 0) { 1650 if (sctp_heartbeat_timer(inp, stcb, lnet, 1651 cnt_of_unconf)) { 1652 /* no need to unlock on tcb its gone */ 1653 goto out_decr; 1654 } 1655 } 1656 #ifdef SCTP_AUDITING_ENABLED 1657 sctp_auditing(4, inp, stcb, lnet); 1658 #endif 1659 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, 1660 stcb->sctp_ep, stcb, lnet); 1661 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED); 1662 } 1663 break; 1664 case SCTP_TIMER_TYPE_COOKIE: 1665 if ((stcb == NULL) || (inp == NULL)) { 1666 break; 1667 } 1668 if (sctp_cookie_timer(inp, stcb, net)) { 1669 /* no need to unlock on tcb its gone */ 1670 goto out_decr; 1671 } 1672 SCTP_STAT_INCR(sctps_timocookie); 1673 stcb->asoc.timocookie++; 1674 #ifdef SCTP_AUDITING_ENABLED 1675 sctp_auditing(4, inp, stcb, net); 1676 #endif 1677 /* 1678 * We consider T3 and Cookie timer pretty much the same with 1679 * respect to where from in chunk_output. 1680 */ 1681 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1682 break; 1683 case SCTP_TIMER_TYPE_NEWCOOKIE: 1684 { 1685 struct timeval tv; 1686 int i, secret; 1687 1688 if (inp == NULL) { 1689 break; 1690 } 1691 SCTP_STAT_INCR(sctps_timosecret); 1692 (void)SCTP_GETTIME_TIMEVAL(&tv); 1693 SCTP_INP_WLOCK(inp); 1694 inp->sctp_ep.time_of_secret_change = tv.tv_sec; 1695 inp->sctp_ep.last_secret_number = 1696 inp->sctp_ep.current_secret_number; 1697 inp->sctp_ep.current_secret_number++; 1698 if (inp->sctp_ep.current_secret_number >= 1699 SCTP_HOW_MANY_SECRETS) { 1700 inp->sctp_ep.current_secret_number = 0; 1701 } 1702 secret = (int)inp->sctp_ep.current_secret_number; 1703 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) { 1704 inp->sctp_ep.secret_key[secret][i] = 1705 sctp_select_initial_TSN(&inp->sctp_ep); 1706 } 1707 SCTP_INP_WUNLOCK(inp); 1708 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net); 1709 } 1710 did_output = 0; 1711 break; 1712 case SCTP_TIMER_TYPE_PATHMTURAISE: 1713 if ((stcb == NULL) || (inp == NULL)) { 1714 break; 1715 } 1716 SCTP_STAT_INCR(sctps_timopathmtu); 1717 sctp_pathmtu_timer(inp, stcb, net); 1718 did_output = 0; 1719 break; 1720 case SCTP_TIMER_TYPE_SHUTDOWNACK: 1721 if ((stcb == NULL) || (inp == NULL)) { 1722 break; 1723 } 1724 if (sctp_shutdownack_timer(inp, stcb, net)) { 1725 /* no need to unlock on tcb its gone */ 1726 goto out_decr; 1727 } 1728 SCTP_STAT_INCR(sctps_timoshutdownack); 1729 stcb->asoc.timoshutdownack++; 1730 #ifdef SCTP_AUDITING_ENABLED 1731 sctp_auditing(4, inp, stcb, net); 1732 #endif 1733 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED); 1734 break; 1735 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 1736 if ((stcb == NULL) || (inp == NULL)) { 1737 break; 1738 } 1739 SCTP_STAT_INCR(sctps_timoshutdownguard); 1740 sctp_abort_an_association(inp, stcb, 1741 SCTP_SHUTDOWN_GUARD_EXPIRES, NULL, SCTP_SO_NOT_LOCKED); 1742 /* no need to unlock on tcb its gone */ 1743 goto out_decr; 1744 1745 case SCTP_TIMER_TYPE_STRRESET: 1746 if ((stcb == NULL) || (inp == NULL)) { 1747 break; 1748 } 1749 if (sctp_strreset_timer(inp, stcb, net)) { 1750 /* no need to unlock on tcb its gone */ 1751 goto out_decr; 1752 } 1753 SCTP_STAT_INCR(sctps_timostrmrst); 1754 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED); 1755 break; 1756 case SCTP_TIMER_TYPE_EARLYFR: 1757 /* Need to do FR of things for net */ 1758 if ((stcb == NULL) || (inp == NULL)) { 1759 break; 1760 } 1761 SCTP_STAT_INCR(sctps_timoearlyfr); 1762 sctp_early_fr_timer(inp, stcb, net); 1763 break; 1764 case SCTP_TIMER_TYPE_ASCONF: 1765 if ((stcb == NULL) || (inp == NULL)) { 1766 break; 1767 } 1768 if (sctp_asconf_timer(inp, stcb, net)) { 1769 /* no need to unlock on tcb its gone */ 1770 goto out_decr; 1771 } 1772 SCTP_STAT_INCR(sctps_timoasconf); 1773 #ifdef SCTP_AUDITING_ENABLED 1774 sctp_auditing(4, inp, stcb, net); 1775 #endif 1776 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED); 1777 break; 1778 case SCTP_TIMER_TYPE_PRIM_DELETED: 1779 if ((stcb == NULL) || (inp == NULL)) { 1780 break; 1781 } 1782 sctp_delete_prim_timer(inp, stcb, net); 1783 SCTP_STAT_INCR(sctps_timodelprim); 1784 break; 1785 1786 case SCTP_TIMER_TYPE_AUTOCLOSE: 1787 if ((stcb == NULL) || (inp == NULL)) { 1788 break; 1789 } 1790 SCTP_STAT_INCR(sctps_timoautoclose); 1791 sctp_autoclose_timer(inp, stcb, net); 1792 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED); 1793 did_output = 0; 1794 break; 1795 case SCTP_TIMER_TYPE_ASOCKILL: 1796 if ((stcb == NULL) || (inp == NULL)) { 1797 break; 1798 } 1799 SCTP_STAT_INCR(sctps_timoassockill); 1800 /* Can we free it yet? */ 1801 SCTP_INP_DECR_REF(inp); 1802 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1); 1803 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1804 so = SCTP_INP_SO(inp); 1805 atomic_add_int(&stcb->asoc.refcnt, 1); 1806 SCTP_TCB_UNLOCK(stcb); 1807 SCTP_SOCKET_LOCK(so, 1); 1808 SCTP_TCB_LOCK(stcb); 1809 atomic_subtract_int(&stcb->asoc.refcnt, 1); 1810 #endif 1811 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2); 1812 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1813 SCTP_SOCKET_UNLOCK(so, 1); 1814 #endif 1815 /* 1816 * free asoc, always unlocks (or destroy's) so prevent 1817 * duplicate unlock or unlock of a free mtx :-0 1818 */ 1819 stcb = NULL; 1820 goto out_no_decr; 1821 case SCTP_TIMER_TYPE_INPKILL: 1822 SCTP_STAT_INCR(sctps_timoinpkill); 1823 if (inp == NULL) { 1824 break; 1825 } 1826 /* 1827 * special case, take away our increment since WE are the 1828 * killer 1829 */ 1830 SCTP_INP_DECR_REF(inp); 1831 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3); 1832 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 1833 SCTP_CALLED_DIRECTLY_NOCMPSET); 1834 goto out_no_decr; 1835 default: 1836 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n", 1837 tmr->type); 1838 break; 1839 }; 1840 #ifdef SCTP_AUDITING_ENABLED 1841 sctp_audit_log(0xF1, (uint8_t) tmr->type); 1842 if (inp) 1843 sctp_auditing(5, inp, stcb, net); 1844 #endif 1845 if ((did_output) && stcb) { 1846 /* 1847 * Now we need to clean up the control chunk chain if an 1848 * ECNE is on it. It must be marked as UNSENT again so next 1849 * call will continue to send it until such time that we get 1850 * a CWR, to remove it. It is, however, less likely that we 1851 * will find a ecn echo on the chain though. 1852 */ 1853 sctp_fix_ecn_echo(&stcb->asoc); 1854 } 1855 get_out: 1856 if (stcb) { 1857 SCTP_TCB_UNLOCK(stcb); 1858 } 1859 out_decr: 1860 if (inp) { 1861 SCTP_INP_DECR_REF(inp); 1862 } 1863 out_no_decr: 1864 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n", 1865 tmr->type); 1866 if (inp) { 1867 } 1868 } 1869 1870 void 1871 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 1872 struct sctp_nets *net) 1873 { 1874 int to_ticks; 1875 struct sctp_timer *tmr; 1876 1877 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) 1878 return; 1879 1880 to_ticks = 0; 1881 1882 tmr = NULL; 1883 if (stcb) { 1884 SCTP_TCB_LOCK_ASSERT(stcb); 1885 } 1886 switch (t_type) { 1887 case SCTP_TIMER_TYPE_ZERO_COPY: 1888 tmr = &inp->sctp_ep.zero_copy_timer; 1889 to_ticks = SCTP_ZERO_COPY_TICK_DELAY; 1890 break; 1891 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 1892 tmr = &inp->sctp_ep.zero_copy_sendq_timer; 1893 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY; 1894 break; 1895 case SCTP_TIMER_TYPE_ADDR_WQ: 1896 /* Only 1 tick away :-) */ 1897 tmr = &sctppcbinfo.addr_wq_timer; 1898 to_ticks = SCTP_ADDRESS_TICK_DELAY; 1899 break; 1900 case SCTP_TIMER_TYPE_ITERATOR: 1901 { 1902 struct sctp_iterator *it; 1903 1904 it = (struct sctp_iterator *)inp; 1905 tmr = &it->tmr; 1906 to_ticks = SCTP_ITERATOR_TICKS; 1907 } 1908 break; 1909 case SCTP_TIMER_TYPE_SEND: 1910 /* Here we use the RTO timer */ 1911 { 1912 int rto_val; 1913 1914 if ((stcb == NULL) || (net == NULL)) { 1915 return; 1916 } 1917 tmr = &net->rxt_timer; 1918 if (net->RTO == 0) { 1919 rto_val = stcb->asoc.initial_rto; 1920 } else { 1921 rto_val = net->RTO; 1922 } 1923 to_ticks = MSEC_TO_TICKS(rto_val); 1924 } 1925 break; 1926 case SCTP_TIMER_TYPE_INIT: 1927 /* 1928 * Here we use the INIT timer default usually about 1 1929 * minute. 1930 */ 1931 if ((stcb == NULL) || (net == NULL)) { 1932 return; 1933 } 1934 tmr = &net->rxt_timer; 1935 if (net->RTO == 0) { 1936 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 1937 } else { 1938 to_ticks = MSEC_TO_TICKS(net->RTO); 1939 } 1940 break; 1941 case SCTP_TIMER_TYPE_RECV: 1942 /* 1943 * Here we use the Delayed-Ack timer value from the inp 1944 * ususually about 200ms. 1945 */ 1946 if (stcb == NULL) { 1947 return; 1948 } 1949 tmr = &stcb->asoc.dack_timer; 1950 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack); 1951 break; 1952 case SCTP_TIMER_TYPE_SHUTDOWN: 1953 /* Here we use the RTO of the destination. */ 1954 if ((stcb == NULL) || (net == NULL)) { 1955 return; 1956 } 1957 if (net->RTO == 0) { 1958 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 1959 } else { 1960 to_ticks = MSEC_TO_TICKS(net->RTO); 1961 } 1962 tmr = &net->rxt_timer; 1963 break; 1964 case SCTP_TIMER_TYPE_HEARTBEAT: 1965 /* 1966 * the net is used here so that we can add in the RTO. Even 1967 * though we use a different timer. We also add the HB timer 1968 * PLUS a random jitter. 1969 */ 1970 if ((inp == NULL) || (stcb == NULL)) { 1971 return; 1972 } else { 1973 uint32_t rndval; 1974 uint8_t this_random; 1975 int cnt_of_unconf = 0; 1976 struct sctp_nets *lnet; 1977 1978 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 1979 if ((lnet->dest_state & SCTP_ADDR_UNCONFIRMED) && 1980 (lnet->dest_state & SCTP_ADDR_REACHABLE)) { 1981 cnt_of_unconf++; 1982 } 1983 } 1984 if (cnt_of_unconf) { 1985 net = lnet = NULL; 1986 (void)sctp_heartbeat_timer(inp, stcb, lnet, cnt_of_unconf); 1987 } 1988 if (stcb->asoc.hb_random_idx > 3) { 1989 rndval = sctp_select_initial_TSN(&inp->sctp_ep); 1990 memcpy(stcb->asoc.hb_random_values, &rndval, 1991 sizeof(stcb->asoc.hb_random_values)); 1992 stcb->asoc.hb_random_idx = 0; 1993 } 1994 this_random = stcb->asoc.hb_random_values[stcb->asoc.hb_random_idx]; 1995 stcb->asoc.hb_random_idx++; 1996 stcb->asoc.hb_ect_randombit = 0; 1997 /* 1998 * this_random will be 0 - 256 ms RTO is in ms. 1999 */ 2000 if ((stcb->asoc.hb_is_disabled) && 2001 (cnt_of_unconf == 0)) { 2002 return; 2003 } 2004 if (net) { 2005 int delay; 2006 2007 delay = stcb->asoc.heart_beat_delay; 2008 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 2009 if ((lnet->dest_state & SCTP_ADDR_UNCONFIRMED) && 2010 ((lnet->dest_state & SCTP_ADDR_OUT_OF_SCOPE) == 0) && 2011 (lnet->dest_state & SCTP_ADDR_REACHABLE)) { 2012 delay = 0; 2013 } 2014 } 2015 if (net->RTO == 0) { 2016 /* Never been checked */ 2017 to_ticks = this_random + stcb->asoc.initial_rto + delay; 2018 } else { 2019 /* set rto_val to the ms */ 2020 to_ticks = delay + net->RTO + this_random; 2021 } 2022 } else { 2023 if (cnt_of_unconf) { 2024 to_ticks = this_random + stcb->asoc.initial_rto; 2025 } else { 2026 to_ticks = stcb->asoc.heart_beat_delay + this_random + stcb->asoc.initial_rto; 2027 } 2028 } 2029 /* 2030 * Now we must convert the to_ticks that are now in 2031 * ms to ticks. 2032 */ 2033 to_ticks = MSEC_TO_TICKS(to_ticks); 2034 tmr = &stcb->asoc.hb_timer; 2035 } 2036 break; 2037 case SCTP_TIMER_TYPE_COOKIE: 2038 /* 2039 * Here we can use the RTO timer from the network since one 2040 * RTT was compelete. If a retran happened then we will be 2041 * using the RTO initial value. 2042 */ 2043 if ((stcb == NULL) || (net == NULL)) { 2044 return; 2045 } 2046 if (net->RTO == 0) { 2047 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2048 } else { 2049 to_ticks = MSEC_TO_TICKS(net->RTO); 2050 } 2051 tmr = &net->rxt_timer; 2052 break; 2053 case SCTP_TIMER_TYPE_NEWCOOKIE: 2054 /* 2055 * nothing needed but the endpoint here ususually about 60 2056 * minutes. 2057 */ 2058 if (inp == NULL) { 2059 return; 2060 } 2061 tmr = &inp->sctp_ep.signature_change; 2062 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE]; 2063 break; 2064 case SCTP_TIMER_TYPE_ASOCKILL: 2065 if (stcb == NULL) { 2066 return; 2067 } 2068 tmr = &stcb->asoc.strreset_timer; 2069 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT); 2070 break; 2071 case SCTP_TIMER_TYPE_INPKILL: 2072 /* 2073 * The inp is setup to die. We re-use the signature_chage 2074 * timer since that has stopped and we are in the GONE 2075 * state. 2076 */ 2077 if (inp == NULL) { 2078 return; 2079 } 2080 tmr = &inp->sctp_ep.signature_change; 2081 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT); 2082 break; 2083 case SCTP_TIMER_TYPE_PATHMTURAISE: 2084 /* 2085 * Here we use the value found in the EP for PMTU ususually 2086 * about 10 minutes. 2087 */ 2088 if ((stcb == NULL) || (inp == NULL)) { 2089 return; 2090 } 2091 if (net == NULL) { 2092 return; 2093 } 2094 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU]; 2095 tmr = &net->pmtu_timer; 2096 break; 2097 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2098 /* Here we use the RTO of the destination */ 2099 if ((stcb == NULL) || (net == NULL)) { 2100 return; 2101 } 2102 if (net->RTO == 0) { 2103 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2104 } else { 2105 to_ticks = MSEC_TO_TICKS(net->RTO); 2106 } 2107 tmr = &net->rxt_timer; 2108 break; 2109 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2110 /* 2111 * Here we use the endpoints shutdown guard timer usually 2112 * about 3 minutes. 2113 */ 2114 if ((inp == NULL) || (stcb == NULL)) { 2115 return; 2116 } 2117 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN]; 2118 tmr = &stcb->asoc.shut_guard_timer; 2119 break; 2120 case SCTP_TIMER_TYPE_STRRESET: 2121 /* 2122 * Here the timer comes from the stcb but its value is from 2123 * the net's RTO. 2124 */ 2125 if ((stcb == NULL) || (net == NULL)) { 2126 return; 2127 } 2128 if (net->RTO == 0) { 2129 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2130 } else { 2131 to_ticks = MSEC_TO_TICKS(net->RTO); 2132 } 2133 tmr = &stcb->asoc.strreset_timer; 2134 break; 2135 2136 case SCTP_TIMER_TYPE_EARLYFR: 2137 { 2138 unsigned int msec; 2139 2140 if ((stcb == NULL) || (net == NULL)) { 2141 return; 2142 } 2143 if (net->flight_size > net->cwnd) { 2144 /* no need to start */ 2145 return; 2146 } 2147 SCTP_STAT_INCR(sctps_earlyfrstart); 2148 if (net->lastsa == 0) { 2149 /* Hmm no rtt estimate yet? */ 2150 msec = stcb->asoc.initial_rto >> 2; 2151 } else { 2152 msec = ((net->lastsa >> 2) + net->lastsv) >> 1; 2153 } 2154 if (msec < sctp_early_fr_msec) { 2155 msec = sctp_early_fr_msec; 2156 if (msec < SCTP_MINFR_MSEC_FLOOR) { 2157 msec = SCTP_MINFR_MSEC_FLOOR; 2158 } 2159 } 2160 to_ticks = MSEC_TO_TICKS(msec); 2161 tmr = &net->fr_timer; 2162 } 2163 break; 2164 case SCTP_TIMER_TYPE_ASCONF: 2165 /* 2166 * Here the timer comes from the stcb but its value is from 2167 * the net's RTO. 2168 */ 2169 if ((stcb == NULL) || (net == NULL)) { 2170 return; 2171 } 2172 if (net->RTO == 0) { 2173 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2174 } else { 2175 to_ticks = MSEC_TO_TICKS(net->RTO); 2176 } 2177 tmr = &stcb->asoc.asconf_timer; 2178 break; 2179 case SCTP_TIMER_TYPE_PRIM_DELETED: 2180 if ((stcb == NULL) || (net != NULL)) { 2181 return; 2182 } 2183 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2184 tmr = &stcb->asoc.delete_prim_timer; 2185 break; 2186 case SCTP_TIMER_TYPE_AUTOCLOSE: 2187 if (stcb == NULL) { 2188 return; 2189 } 2190 if (stcb->asoc.sctp_autoclose_ticks == 0) { 2191 /* 2192 * Really an error since stcb is NOT set to 2193 * autoclose 2194 */ 2195 return; 2196 } 2197 to_ticks = stcb->asoc.sctp_autoclose_ticks; 2198 tmr = &stcb->asoc.autoclose_timer; 2199 break; 2200 default: 2201 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n", 2202 __FUNCTION__, t_type); 2203 return; 2204 break; 2205 }; 2206 if ((to_ticks <= 0) || (tmr == NULL)) { 2207 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n", 2208 __FUNCTION__, t_type, to_ticks, tmr); 2209 return; 2210 } 2211 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 2212 /* 2213 * we do NOT allow you to have it already running. if it is 2214 * we leave the current one up unchanged 2215 */ 2216 return; 2217 } 2218 /* At this point we can proceed */ 2219 if (t_type == SCTP_TIMER_TYPE_SEND) { 2220 stcb->asoc.num_send_timers_up++; 2221 } 2222 tmr->stopped_from = 0; 2223 tmr->type = t_type; 2224 tmr->ep = (void *)inp; 2225 tmr->tcb = (void *)stcb; 2226 tmr->net = (void *)net; 2227 tmr->self = (void *)tmr; 2228 tmr->ticks = sctp_get_tick_count(); 2229 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr); 2230 return; 2231 } 2232 2233 void 2234 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 2235 struct sctp_nets *net, uint32_t from) 2236 { 2237 struct sctp_timer *tmr; 2238 2239 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && 2240 (inp == NULL)) 2241 return; 2242 2243 tmr = NULL; 2244 if (stcb) { 2245 SCTP_TCB_LOCK_ASSERT(stcb); 2246 } 2247 switch (t_type) { 2248 case SCTP_TIMER_TYPE_ZERO_COPY: 2249 tmr = &inp->sctp_ep.zero_copy_timer; 2250 break; 2251 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 2252 tmr = &inp->sctp_ep.zero_copy_sendq_timer; 2253 break; 2254 case SCTP_TIMER_TYPE_ADDR_WQ: 2255 tmr = &sctppcbinfo.addr_wq_timer; 2256 break; 2257 case SCTP_TIMER_TYPE_EARLYFR: 2258 if ((stcb == NULL) || (net == NULL)) { 2259 return; 2260 } 2261 tmr = &net->fr_timer; 2262 SCTP_STAT_INCR(sctps_earlyfrstop); 2263 break; 2264 case SCTP_TIMER_TYPE_ITERATOR: 2265 { 2266 struct sctp_iterator *it; 2267 2268 it = (struct sctp_iterator *)inp; 2269 tmr = &it->tmr; 2270 } 2271 break; 2272 case SCTP_TIMER_TYPE_SEND: 2273 if ((stcb == NULL) || (net == NULL)) { 2274 return; 2275 } 2276 tmr = &net->rxt_timer; 2277 break; 2278 case SCTP_TIMER_TYPE_INIT: 2279 if ((stcb == NULL) || (net == NULL)) { 2280 return; 2281 } 2282 tmr = &net->rxt_timer; 2283 break; 2284 case SCTP_TIMER_TYPE_RECV: 2285 if (stcb == NULL) { 2286 return; 2287 } 2288 tmr = &stcb->asoc.dack_timer; 2289 break; 2290 case SCTP_TIMER_TYPE_SHUTDOWN: 2291 if ((stcb == NULL) || (net == NULL)) { 2292 return; 2293 } 2294 tmr = &net->rxt_timer; 2295 break; 2296 case SCTP_TIMER_TYPE_HEARTBEAT: 2297 if (stcb == NULL) { 2298 return; 2299 } 2300 tmr = &stcb->asoc.hb_timer; 2301 break; 2302 case SCTP_TIMER_TYPE_COOKIE: 2303 if ((stcb == NULL) || (net == NULL)) { 2304 return; 2305 } 2306 tmr = &net->rxt_timer; 2307 break; 2308 case SCTP_TIMER_TYPE_NEWCOOKIE: 2309 /* nothing needed but the endpoint here */ 2310 tmr = &inp->sctp_ep.signature_change; 2311 /* 2312 * We re-use the newcookie timer for the INP kill timer. We 2313 * must assure that we do not kill it by accident. 2314 */ 2315 break; 2316 case SCTP_TIMER_TYPE_ASOCKILL: 2317 /* 2318 * Stop the asoc kill timer. 2319 */ 2320 if (stcb == NULL) { 2321 return; 2322 } 2323 tmr = &stcb->asoc.strreset_timer; 2324 break; 2325 2326 case SCTP_TIMER_TYPE_INPKILL: 2327 /* 2328 * The inp is setup to die. We re-use the signature_chage 2329 * timer since that has stopped and we are in the GONE 2330 * state. 2331 */ 2332 tmr = &inp->sctp_ep.signature_change; 2333 break; 2334 case SCTP_TIMER_TYPE_PATHMTURAISE: 2335 if ((stcb == NULL) || (net == NULL)) { 2336 return; 2337 } 2338 tmr = &net->pmtu_timer; 2339 break; 2340 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2341 if ((stcb == NULL) || (net == NULL)) { 2342 return; 2343 } 2344 tmr = &net->rxt_timer; 2345 break; 2346 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2347 if (stcb == NULL) { 2348 return; 2349 } 2350 tmr = &stcb->asoc.shut_guard_timer; 2351 break; 2352 case SCTP_TIMER_TYPE_STRRESET: 2353 if (stcb == NULL) { 2354 return; 2355 } 2356 tmr = &stcb->asoc.strreset_timer; 2357 break; 2358 case SCTP_TIMER_TYPE_ASCONF: 2359 if (stcb == NULL) { 2360 return; 2361 } 2362 tmr = &stcb->asoc.asconf_timer; 2363 break; 2364 case SCTP_TIMER_TYPE_PRIM_DELETED: 2365 if (stcb == NULL) { 2366 return; 2367 } 2368 tmr = &stcb->asoc.delete_prim_timer; 2369 break; 2370 case SCTP_TIMER_TYPE_AUTOCLOSE: 2371 if (stcb == NULL) { 2372 return; 2373 } 2374 tmr = &stcb->asoc.autoclose_timer; 2375 break; 2376 default: 2377 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n", 2378 __FUNCTION__, t_type); 2379 break; 2380 }; 2381 if (tmr == NULL) { 2382 return; 2383 } 2384 if ((tmr->type != t_type) && tmr->type) { 2385 /* 2386 * Ok we have a timer that is under joint use. Cookie timer 2387 * per chance with the SEND timer. We therefore are NOT 2388 * running the timer that the caller wants stopped. So just 2389 * return. 2390 */ 2391 return; 2392 } 2393 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) { 2394 stcb->asoc.num_send_timers_up--; 2395 if (stcb->asoc.num_send_timers_up < 0) { 2396 stcb->asoc.num_send_timers_up = 0; 2397 } 2398 } 2399 tmr->self = NULL; 2400 tmr->stopped_from = from; 2401 (void)SCTP_OS_TIMER_STOP(&tmr->timer); 2402 return; 2403 } 2404 2405 #ifdef SCTP_USE_ADLER32 2406 static uint32_t 2407 update_adler32(uint32_t adler, uint8_t * buf, int32_t len) 2408 { 2409 uint32_t s1 = adler & 0xffff; 2410 uint32_t s2 = (adler >> 16) & 0xffff; 2411 int n; 2412 2413 for (n = 0; n < len; n++, buf++) { 2414 /* s1 = (s1 + buf[n]) % BASE */ 2415 /* first we add */ 2416 s1 = (s1 + *buf); 2417 /* 2418 * now if we need to, we do a mod by subtracting. It seems a 2419 * bit faster since I really will only ever do one subtract 2420 * at the MOST, since buf[n] is a max of 255. 2421 */ 2422 if (s1 >= SCTP_ADLER32_BASE) { 2423 s1 -= SCTP_ADLER32_BASE; 2424 } 2425 /* s2 = (s2 + s1) % BASE */ 2426 /* first we add */ 2427 s2 = (s2 + s1); 2428 /* 2429 * again, it is more efficent (it seems) to subtract since 2430 * the most s2 will ever be is (BASE-1 + BASE-1) in the 2431 * worse case. This would then be (2 * BASE) - 2, which will 2432 * still only do one subtract. On Intel this is much better 2433 * to do this way and avoid the divide. Have not -pg'd on 2434 * sparc. 2435 */ 2436 if (s2 >= SCTP_ADLER32_BASE) { 2437 s2 -= SCTP_ADLER32_BASE; 2438 } 2439 } 2440 /* Return the adler32 of the bytes buf[0..len-1] */ 2441 return ((s2 << 16) + s1); 2442 } 2443 2444 #endif 2445 2446 2447 uint32_t 2448 sctp_calculate_len(struct mbuf *m) 2449 { 2450 uint32_t tlen = 0; 2451 struct mbuf *at; 2452 2453 at = m; 2454 while (at) { 2455 tlen += SCTP_BUF_LEN(at); 2456 at = SCTP_BUF_NEXT(at); 2457 } 2458 return (tlen); 2459 } 2460 2461 #if defined(SCTP_WITH_NO_CSUM) 2462 2463 uint32_t 2464 sctp_calculate_sum(struct mbuf *m, int32_t * pktlen, uint32_t offset) 2465 { 2466 /* 2467 * given a mbuf chain with a packetheader offset by 'offset' 2468 * pointing at a sctphdr (with csum set to 0) go through the chain 2469 * of SCTP_BUF_NEXT()'s and calculate the SCTP checksum. This also 2470 * has a side bonus as it will calculate the total length of the 2471 * mbuf chain. Note: if offset is greater than the total mbuf 2472 * length, checksum=1, pktlen=0 is returned (ie. no real error code) 2473 */ 2474 if (pktlen == NULL) 2475 return (0); 2476 *pktlen = sctp_calculate_len(m); 2477 return (0); 2478 } 2479 2480 #elif defined(SCTP_USE_INCHKSUM) 2481 2482 #include <machine/in_cksum.h> 2483 2484 uint32_t 2485 sctp_calculate_sum(struct mbuf *m, int32_t * pktlen, uint32_t offset) 2486 { 2487 /* 2488 * given a mbuf chain with a packetheader offset by 'offset' 2489 * pointing at a sctphdr (with csum set to 0) go through the chain 2490 * of SCTP_BUF_NEXT()'s and calculate the SCTP checksum. This also 2491 * has a side bonus as it will calculate the total length of the 2492 * mbuf chain. Note: if offset is greater than the total mbuf 2493 * length, checksum=1, pktlen=0 is returned (ie. no real error code) 2494 */ 2495 int32_t tlen = 0; 2496 struct mbuf *at; 2497 uint32_t the_sum, retsum; 2498 2499 at = m; 2500 while (at) { 2501 tlen += SCTP_BUF_LEN(at); 2502 at = SCTP_BUF_NEXT(at); 2503 } 2504 the_sum = (uint32_t) (in_cksum_skip(m, tlen, offset)); 2505 if (pktlen != NULL) 2506 *pktlen = (tlen - offset); 2507 retsum = htons(the_sum); 2508 return (the_sum); 2509 } 2510 2511 #else 2512 2513 uint32_t 2514 sctp_calculate_sum(struct mbuf *m, int32_t * pktlen, uint32_t offset) 2515 { 2516 /* 2517 * given a mbuf chain with a packetheader offset by 'offset' 2518 * pointing at a sctphdr (with csum set to 0) go through the chain 2519 * of SCTP_BUF_NEXT()'s and calculate the SCTP checksum. This also 2520 * has a side bonus as it will calculate the total length of the 2521 * mbuf chain. Note: if offset is greater than the total mbuf 2522 * length, checksum=1, pktlen=0 is returned (ie. no real error code) 2523 */ 2524 int32_t tlen = 0; 2525 2526 #ifdef SCTP_USE_ADLER32 2527 uint32_t base = 1L; 2528 2529 #else 2530 uint32_t base = 0xffffffff; 2531 2532 #endif 2533 struct mbuf *at; 2534 2535 at = m; 2536 /* find the correct mbuf and offset into mbuf */ 2537 while ((at != NULL) && (offset > (uint32_t) SCTP_BUF_LEN(at))) { 2538 offset -= SCTP_BUF_LEN(at); /* update remaining offset 2539 * left */ 2540 at = SCTP_BUF_NEXT(at); 2541 } 2542 while (at != NULL) { 2543 if ((SCTP_BUF_LEN(at) - offset) > 0) { 2544 #ifdef SCTP_USE_ADLER32 2545 base = update_adler32(base, 2546 (unsigned char *)(SCTP_BUF_AT(at, offset)), 2547 (unsigned int)(SCTP_BUF_LEN(at) - offset)); 2548 #else 2549 if ((SCTP_BUF_LEN(at) - offset) < 4) { 2550 /* Use old method if less than 4 bytes */ 2551 base = old_update_crc32(base, 2552 (unsigned char *)(SCTP_BUF_AT(at, offset)), 2553 (unsigned int)(SCTP_BUF_LEN(at) - offset)); 2554 } else { 2555 base = update_crc32(base, 2556 (unsigned char *)(SCTP_BUF_AT(at, offset)), 2557 (unsigned int)(SCTP_BUF_LEN(at) - offset)); 2558 } 2559 #endif 2560 tlen += SCTP_BUF_LEN(at) - offset; 2561 /* we only offset once into the first mbuf */ 2562 } 2563 if (offset) { 2564 if (offset < (uint32_t) SCTP_BUF_LEN(at)) 2565 offset = 0; 2566 else 2567 offset -= SCTP_BUF_LEN(at); 2568 } 2569 at = SCTP_BUF_NEXT(at); 2570 } 2571 if (pktlen != NULL) { 2572 *pktlen = tlen; 2573 } 2574 #ifdef SCTP_USE_ADLER32 2575 /* Adler32 */ 2576 base = htonl(base); 2577 #else 2578 /* CRC-32c */ 2579 base = sctp_csum_finalize(base); 2580 #endif 2581 return (base); 2582 } 2583 2584 2585 #endif 2586 2587 void 2588 sctp_mtu_size_reset(struct sctp_inpcb *inp, 2589 struct sctp_association *asoc, uint32_t mtu) 2590 { 2591 /* 2592 * Reset the P-MTU size on this association, this involves changing 2593 * the asoc MTU, going through ANY chunk+overhead larger than mtu to 2594 * allow the DF flag to be cleared. 2595 */ 2596 struct sctp_tmit_chunk *chk; 2597 unsigned int eff_mtu, ovh; 2598 2599 #ifdef SCTP_PRINT_FOR_B_AND_M 2600 SCTP_PRINTF("sctp_mtu_size_reset(%p, asoc:%p mtu:%d\n", 2601 inp, asoc, mtu); 2602 #endif 2603 asoc->smallest_mtu = mtu; 2604 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 2605 ovh = SCTP_MIN_OVERHEAD; 2606 } else { 2607 ovh = SCTP_MIN_V4_OVERHEAD; 2608 } 2609 eff_mtu = mtu - ovh; 2610 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) { 2611 2612 if (chk->send_size > eff_mtu) { 2613 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 2614 } 2615 } 2616 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { 2617 if (chk->send_size > eff_mtu) { 2618 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 2619 } 2620 } 2621 } 2622 2623 2624 /* 2625 * given an association and starting time of the current RTT period return 2626 * RTO in number of msecs net should point to the current network 2627 */ 2628 uint32_t 2629 sctp_calculate_rto(struct sctp_tcb *stcb, 2630 struct sctp_association *asoc, 2631 struct sctp_nets *net, 2632 struct timeval *told, 2633 int safe) 2634 { 2635 /*- 2636 * given an association and the starting time of the current RTT 2637 * period (in value1/value2) return RTO in number of msecs. 2638 */ 2639 int calc_time = 0; 2640 int o_calctime; 2641 uint32_t new_rto = 0; 2642 int first_measure = 0; 2643 struct timeval now, then, *old; 2644 2645 /* Copy it out for sparc64 */ 2646 if (safe == sctp_align_unsafe_makecopy) { 2647 old = &then; 2648 memcpy(&then, told, sizeof(struct timeval)); 2649 } else if (safe == sctp_align_safe_nocopy) { 2650 old = told; 2651 } else { 2652 /* error */ 2653 SCTP_PRINTF("Huh, bad rto calc call\n"); 2654 return (0); 2655 } 2656 /************************/ 2657 /* 1. calculate new RTT */ 2658 /************************/ 2659 /* get the current time */ 2660 (void)SCTP_GETTIME_TIMEVAL(&now); 2661 /* compute the RTT value */ 2662 if ((u_long)now.tv_sec > (u_long)old->tv_sec) { 2663 calc_time = ((u_long)now.tv_sec - (u_long)old->tv_sec) * 1000; 2664 if ((u_long)now.tv_usec > (u_long)old->tv_usec) { 2665 calc_time += (((u_long)now.tv_usec - 2666 (u_long)old->tv_usec) / 1000); 2667 } else if ((u_long)now.tv_usec < (u_long)old->tv_usec) { 2668 /* Borrow 1,000ms from current calculation */ 2669 calc_time -= 1000; 2670 /* Add in the slop over */ 2671 calc_time += ((int)now.tv_usec / 1000); 2672 /* Add in the pre-second ms's */ 2673 calc_time += (((int)1000000 - (int)old->tv_usec) / 1000); 2674 } 2675 } else if ((u_long)now.tv_sec == (u_long)old->tv_sec) { 2676 if ((u_long)now.tv_usec > (u_long)old->tv_usec) { 2677 calc_time = ((u_long)now.tv_usec - 2678 (u_long)old->tv_usec) / 1000; 2679 } else if ((u_long)now.tv_usec < (u_long)old->tv_usec) { 2680 /* impossible .. garbage in nothing out */ 2681 goto calc_rto; 2682 } else if ((u_long)now.tv_usec == (u_long)old->tv_usec) { 2683 /* 2684 * We have to have 1 usec :-D this must be the 2685 * loopback. 2686 */ 2687 calc_time = 1; 2688 } else { 2689 /* impossible .. garbage in nothing out */ 2690 goto calc_rto; 2691 } 2692 } else { 2693 /* Clock wrapped? */ 2694 goto calc_rto; 2695 } 2696 /***************************/ 2697 /* 2. update RTTVAR & SRTT */ 2698 /***************************/ 2699 o_calctime = calc_time; 2700 /* this is Van Jacobson's integer version */ 2701 if (net->RTO_measured) { 2702 calc_time -= (net->lastsa >> SCTP_RTT_SHIFT); /* take away 1/8th when 2703 * shift=3 */ 2704 if (sctp_logging_level & SCTP_RTTVAR_LOGGING_ENABLE) { 2705 rto_logging(net, SCTP_LOG_RTTVAR); 2706 } 2707 net->prev_rtt = o_calctime; 2708 net->lastsa += calc_time; /* add 7/8th into sa when 2709 * shift=3 */ 2710 if (calc_time < 0) { 2711 calc_time = -calc_time; 2712 } 2713 calc_time -= (net->lastsv >> SCTP_RTT_VAR_SHIFT); /* take away 1/4 when 2714 * VAR shift=2 */ 2715 net->lastsv += calc_time; 2716 if (net->lastsv == 0) { 2717 net->lastsv = SCTP_CLOCK_GRANULARITY; 2718 } 2719 } else { 2720 /* First RTO measurment */ 2721 net->RTO_measured = 1; 2722 net->lastsa = calc_time << SCTP_RTT_SHIFT; /* Multiply by 8 when 2723 * shift=3 */ 2724 net->lastsv = calc_time; 2725 if (net->lastsv == 0) { 2726 net->lastsv = SCTP_CLOCK_GRANULARITY; 2727 } 2728 first_measure = 1; 2729 net->prev_rtt = o_calctime; 2730 if (sctp_logging_level & SCTP_RTTVAR_LOGGING_ENABLE) { 2731 rto_logging(net, SCTP_LOG_INITIAL_RTT); 2732 } 2733 } 2734 calc_rto: 2735 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv; 2736 if ((new_rto > SCTP_SAT_NETWORK_MIN) && 2737 (stcb->asoc.sat_network_lockout == 0)) { 2738 stcb->asoc.sat_network = 1; 2739 } else if ((!first_measure) && stcb->asoc.sat_network) { 2740 stcb->asoc.sat_network = 0; 2741 stcb->asoc.sat_network_lockout = 1; 2742 } 2743 /* bound it, per C6/C7 in Section 5.3.1 */ 2744 if (new_rto < stcb->asoc.minrto) { 2745 new_rto = stcb->asoc.minrto; 2746 } 2747 if (new_rto > stcb->asoc.maxrto) { 2748 new_rto = stcb->asoc.maxrto; 2749 } 2750 /* we are now returning the RTO */ 2751 return (new_rto); 2752 } 2753 2754 /* 2755 * return a pointer to a contiguous piece of data from the given mbuf chain 2756 * starting at 'off' for 'len' bytes. If the desired piece spans more than 2757 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size 2758 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain. 2759 */ 2760 caddr_t 2761 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr) 2762 { 2763 uint32_t count; 2764 uint8_t *ptr; 2765 2766 ptr = in_ptr; 2767 if ((off < 0) || (len <= 0)) 2768 return (NULL); 2769 2770 /* find the desired start location */ 2771 while ((m != NULL) && (off > 0)) { 2772 if (off < SCTP_BUF_LEN(m)) 2773 break; 2774 off -= SCTP_BUF_LEN(m); 2775 m = SCTP_BUF_NEXT(m); 2776 } 2777 if (m == NULL) 2778 return (NULL); 2779 2780 /* is the current mbuf large enough (eg. contiguous)? */ 2781 if ((SCTP_BUF_LEN(m) - off) >= len) { 2782 return (mtod(m, caddr_t)+off); 2783 } else { 2784 /* else, it spans more than one mbuf, so save a temp copy... */ 2785 while ((m != NULL) && (len > 0)) { 2786 count = min(SCTP_BUF_LEN(m) - off, len); 2787 bcopy(mtod(m, caddr_t)+off, ptr, count); 2788 len -= count; 2789 ptr += count; 2790 off = 0; 2791 m = SCTP_BUF_NEXT(m); 2792 } 2793 if ((m == NULL) && (len > 0)) 2794 return (NULL); 2795 else 2796 return ((caddr_t)in_ptr); 2797 } 2798 } 2799 2800 2801 2802 struct sctp_paramhdr * 2803 sctp_get_next_param(struct mbuf *m, 2804 int offset, 2805 struct sctp_paramhdr *pull, 2806 int pull_limit) 2807 { 2808 /* This just provides a typed signature to Peter's Pull routine */ 2809 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit, 2810 (uint8_t *) pull)); 2811 } 2812 2813 2814 int 2815 sctp_add_pad_tombuf(struct mbuf *m, int padlen) 2816 { 2817 /* 2818 * add padlen bytes of 0 filled padding to the end of the mbuf. If 2819 * padlen is > 3 this routine will fail. 2820 */ 2821 uint8_t *dp; 2822 int i; 2823 2824 if (padlen > 3) { 2825 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 2826 return (ENOBUFS); 2827 } 2828 if (padlen <= M_TRAILINGSPACE(m)) { 2829 /* 2830 * The easy way. We hope the majority of the time we hit 2831 * here :) 2832 */ 2833 dp = (uint8_t *) (mtod(m, caddr_t)+SCTP_BUF_LEN(m)); 2834 SCTP_BUF_LEN(m) += padlen; 2835 } else { 2836 /* Hard way we must grow the mbuf */ 2837 struct mbuf *tmp; 2838 2839 tmp = sctp_get_mbuf_for_msg(padlen, 0, M_DONTWAIT, 1, MT_DATA); 2840 if (tmp == NULL) { 2841 /* Out of space GAK! we are in big trouble. */ 2842 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 2843 return (ENOSPC); 2844 } 2845 /* setup and insert in middle */ 2846 SCTP_BUF_LEN(tmp) = padlen; 2847 SCTP_BUF_NEXT(tmp) = NULL; 2848 SCTP_BUF_NEXT(m) = tmp; 2849 dp = mtod(tmp, uint8_t *); 2850 } 2851 /* zero out the pad */ 2852 for (i = 0; i < padlen; i++) { 2853 *dp = 0; 2854 dp++; 2855 } 2856 return (0); 2857 } 2858 2859 int 2860 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf) 2861 { 2862 /* find the last mbuf in chain and pad it */ 2863 struct mbuf *m_at; 2864 2865 m_at = m; 2866 if (last_mbuf) { 2867 return (sctp_add_pad_tombuf(last_mbuf, padval)); 2868 } else { 2869 while (m_at) { 2870 if (SCTP_BUF_NEXT(m_at) == NULL) { 2871 return (sctp_add_pad_tombuf(m_at, padval)); 2872 } 2873 m_at = SCTP_BUF_NEXT(m_at); 2874 } 2875 } 2876 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT); 2877 return (EFAULT); 2878 } 2879 2880 int sctp_asoc_change_wake = 0; 2881 2882 static void 2883 sctp_notify_assoc_change(uint32_t event, struct sctp_tcb *stcb, 2884 uint32_t error, void *data, int so_locked 2885 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2886 SCTP_UNUSED 2887 #endif 2888 ) 2889 { 2890 struct mbuf *m_notify; 2891 struct sctp_assoc_change *sac; 2892 struct sctp_queued_to_read *control; 2893 2894 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2895 struct socket *so; 2896 2897 #endif 2898 2899 /* 2900 * First if we are are going down dump everything we can to the 2901 * socket rcv queue. 2902 */ 2903 2904 if ((stcb == NULL) || 2905 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 2906 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 2907 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) 2908 ) { 2909 /* If the socket is gone we are out of here */ 2910 return; 2911 } 2912 /* 2913 * For TCP model AND UDP connected sockets we will send an error up 2914 * when an ABORT comes in. 2915 */ 2916 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 2917 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 2918 ((event == SCTP_COMM_LOST) || (event == SCTP_CANT_STR_ASSOC))) { 2919 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) { 2920 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED); 2921 stcb->sctp_socket->so_error = ECONNREFUSED; 2922 } else { 2923 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 2924 stcb->sctp_socket->so_error = ECONNRESET; 2925 } 2926 /* Wake ANY sleepers */ 2927 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2928 so = SCTP_INP_SO(stcb->sctp_ep); 2929 if (!so_locked) { 2930 atomic_add_int(&stcb->asoc.refcnt, 1); 2931 SCTP_TCB_UNLOCK(stcb); 2932 SCTP_SOCKET_LOCK(so, 1); 2933 SCTP_TCB_LOCK(stcb); 2934 atomic_subtract_int(&stcb->asoc.refcnt, 1); 2935 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 2936 SCTP_SOCKET_UNLOCK(so, 1); 2937 return; 2938 } 2939 } 2940 #endif 2941 sorwakeup(stcb->sctp_socket); 2942 sowwakeup(stcb->sctp_socket); 2943 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2944 if (!so_locked) { 2945 SCTP_SOCKET_UNLOCK(so, 1); 2946 } 2947 #endif 2948 sctp_asoc_change_wake++; 2949 } 2950 if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVASSOCEVNT)) { 2951 /* event not enabled */ 2952 return; 2953 } 2954 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_change), 0, M_DONTWAIT, 1, MT_DATA); 2955 if (m_notify == NULL) 2956 /* no space left */ 2957 return; 2958 SCTP_BUF_LEN(m_notify) = 0; 2959 2960 sac = mtod(m_notify, struct sctp_assoc_change *); 2961 sac->sac_type = SCTP_ASSOC_CHANGE; 2962 sac->sac_flags = 0; 2963 sac->sac_length = sizeof(struct sctp_assoc_change); 2964 sac->sac_state = event; 2965 sac->sac_error = error; 2966 /* XXX verify these stream counts */ 2967 sac->sac_outbound_streams = stcb->asoc.streamoutcnt; 2968 sac->sac_inbound_streams = stcb->asoc.streamincnt; 2969 sac->sac_assoc_id = sctp_get_associd(stcb); 2970 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_change); 2971 SCTP_BUF_NEXT(m_notify) = NULL; 2972 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 2973 0, 0, 0, 0, 0, 0, 2974 m_notify); 2975 if (control == NULL) { 2976 /* no memory */ 2977 sctp_m_freem(m_notify); 2978 return; 2979 } 2980 control->length = SCTP_BUF_LEN(m_notify); 2981 /* not that we need this */ 2982 control->tail_mbuf = m_notify; 2983 control->spec_flags = M_NOTIFICATION; 2984 sctp_add_to_readq(stcb->sctp_ep, stcb, 2985 control, 2986 &stcb->sctp_socket->so_rcv, 1, so_locked); 2987 if (event == SCTP_COMM_LOST) { 2988 /* Wake up any sleeper */ 2989 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2990 so = SCTP_INP_SO(stcb->sctp_ep); 2991 if (!so_locked) { 2992 atomic_add_int(&stcb->asoc.refcnt, 1); 2993 SCTP_TCB_UNLOCK(stcb); 2994 SCTP_SOCKET_LOCK(so, 1); 2995 SCTP_TCB_LOCK(stcb); 2996 atomic_subtract_int(&stcb->asoc.refcnt, 1); 2997 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 2998 SCTP_SOCKET_UNLOCK(so, 1); 2999 return; 3000 } 3001 } 3002 #endif 3003 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket); 3004 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3005 if (!so_locked) { 3006 SCTP_SOCKET_UNLOCK(so, 1); 3007 } 3008 #endif 3009 } 3010 } 3011 3012 static void 3013 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state, 3014 struct sockaddr *sa, uint32_t error) 3015 { 3016 struct mbuf *m_notify; 3017 struct sctp_paddr_change *spc; 3018 struct sctp_queued_to_read *control; 3019 3020 if ((stcb == NULL) || (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVPADDREVNT))) 3021 /* event not enabled */ 3022 return; 3023 3024 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_DONTWAIT, 1, MT_DATA); 3025 if (m_notify == NULL) 3026 return; 3027 SCTP_BUF_LEN(m_notify) = 0; 3028 spc = mtod(m_notify, struct sctp_paddr_change *); 3029 spc->spc_type = SCTP_PEER_ADDR_CHANGE; 3030 spc->spc_flags = 0; 3031 spc->spc_length = sizeof(struct sctp_paddr_change); 3032 if (sa->sa_family == AF_INET) { 3033 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); 3034 } else { 3035 struct sockaddr_in6 *sin6; 3036 3037 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6)); 3038 3039 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr; 3040 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) { 3041 if (sin6->sin6_scope_id == 0) { 3042 /* recover scope_id for user */ 3043 (void)sa6_recoverscope(sin6); 3044 } else { 3045 /* clear embedded scope_id for user */ 3046 in6_clearscope(&sin6->sin6_addr); 3047 } 3048 } 3049 } 3050 spc->spc_state = state; 3051 spc->spc_error = error; 3052 spc->spc_assoc_id = sctp_get_associd(stcb); 3053 3054 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change); 3055 SCTP_BUF_NEXT(m_notify) = NULL; 3056 3057 /* append to socket */ 3058 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3059 0, 0, 0, 0, 0, 0, 3060 m_notify); 3061 if (control == NULL) { 3062 /* no memory */ 3063 sctp_m_freem(m_notify); 3064 return; 3065 } 3066 control->length = SCTP_BUF_LEN(m_notify); 3067 control->spec_flags = M_NOTIFICATION; 3068 /* not that we need this */ 3069 control->tail_mbuf = m_notify; 3070 sctp_add_to_readq(stcb->sctp_ep, stcb, 3071 control, 3072 &stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED); 3073 } 3074 3075 3076 static void 3077 sctp_notify_send_failed(struct sctp_tcb *stcb, uint32_t error, 3078 struct sctp_tmit_chunk *chk, int so_locked 3079 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3080 SCTP_UNUSED 3081 #endif 3082 ) 3083 { 3084 struct mbuf *m_notify; 3085 struct sctp_send_failed *ssf; 3086 struct sctp_queued_to_read *control; 3087 int length; 3088 3089 if ((stcb == NULL) || (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))) 3090 /* event not enabled */ 3091 return; 3092 3093 length = sizeof(struct sctp_send_failed) + chk->send_size; 3094 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_send_failed), 0, M_DONTWAIT, 1, MT_DATA); 3095 if (m_notify == NULL) 3096 /* no space left */ 3097 return; 3098 SCTP_BUF_LEN(m_notify) = 0; 3099 ssf = mtod(m_notify, struct sctp_send_failed *); 3100 ssf->ssf_type = SCTP_SEND_FAILED; 3101 if (error == SCTP_NOTIFY_DATAGRAM_UNSENT) 3102 ssf->ssf_flags = SCTP_DATA_UNSENT; 3103 else 3104 ssf->ssf_flags = SCTP_DATA_SENT; 3105 ssf->ssf_length = length; 3106 ssf->ssf_error = error; 3107 /* not exactly what the user sent in, but should be close :) */ 3108 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info)); 3109 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number; 3110 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq; 3111 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags; 3112 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype; 3113 ssf->ssf_info.sinfo_context = chk->rec.data.context; 3114 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 3115 ssf->ssf_assoc_id = sctp_get_associd(stcb); 3116 SCTP_BUF_NEXT(m_notify) = chk->data; 3117 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed); 3118 3119 /* Steal off the mbuf */ 3120 chk->data = NULL; 3121 /* 3122 * For this case, we check the actual socket buffer, since the assoc 3123 * is going away we don't want to overfill the socket buffer for a 3124 * non-reader 3125 */ 3126 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3127 sctp_m_freem(m_notify); 3128 return; 3129 } 3130 /* append to socket */ 3131 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3132 0, 0, 0, 0, 0, 0, 3133 m_notify); 3134 if (control == NULL) { 3135 /* no memory */ 3136 sctp_m_freem(m_notify); 3137 return; 3138 } 3139 control->spec_flags = M_NOTIFICATION; 3140 sctp_add_to_readq(stcb->sctp_ep, stcb, 3141 control, 3142 &stcb->sctp_socket->so_rcv, 1, so_locked); 3143 } 3144 3145 3146 static void 3147 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error, 3148 struct sctp_stream_queue_pending *sp, int so_locked 3149 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3150 SCTP_UNUSED 3151 #endif 3152 ) 3153 { 3154 struct mbuf *m_notify; 3155 struct sctp_send_failed *ssf; 3156 struct sctp_queued_to_read *control; 3157 int length; 3158 3159 if ((stcb == NULL) || (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))) 3160 /* event not enabled */ 3161 return; 3162 3163 length = sizeof(struct sctp_send_failed) + sp->length; 3164 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_send_failed), 0, M_DONTWAIT, 1, MT_DATA); 3165 if (m_notify == NULL) 3166 /* no space left */ 3167 return; 3168 SCTP_BUF_LEN(m_notify) = 0; 3169 ssf = mtod(m_notify, struct sctp_send_failed *); 3170 ssf->ssf_type = SCTP_SEND_FAILED; 3171 if (error == SCTP_NOTIFY_DATAGRAM_UNSENT) 3172 ssf->ssf_flags = SCTP_DATA_UNSENT; 3173 else 3174 ssf->ssf_flags = SCTP_DATA_SENT; 3175 ssf->ssf_length = length; 3176 ssf->ssf_error = error; 3177 /* not exactly what the user sent in, but should be close :) */ 3178 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info)); 3179 ssf->ssf_info.sinfo_stream = sp->stream; 3180 ssf->ssf_info.sinfo_ssn = sp->strseq; 3181 ssf->ssf_info.sinfo_flags = sp->sinfo_flags; 3182 ssf->ssf_info.sinfo_ppid = sp->ppid; 3183 ssf->ssf_info.sinfo_context = sp->context; 3184 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 3185 ssf->ssf_assoc_id = sctp_get_associd(stcb); 3186 SCTP_BUF_NEXT(m_notify) = sp->data; 3187 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed); 3188 3189 /* Steal off the mbuf */ 3190 sp->data = NULL; 3191 /* 3192 * For this case, we check the actual socket buffer, since the assoc 3193 * is going away we don't want to overfill the socket buffer for a 3194 * non-reader 3195 */ 3196 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3197 sctp_m_freem(m_notify); 3198 return; 3199 } 3200 /* append to socket */ 3201 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3202 0, 0, 0, 0, 0, 0, 3203 m_notify); 3204 if (control == NULL) { 3205 /* no memory */ 3206 sctp_m_freem(m_notify); 3207 return; 3208 } 3209 control->spec_flags = M_NOTIFICATION; 3210 sctp_add_to_readq(stcb->sctp_ep, stcb, 3211 control, 3212 &stcb->sctp_socket->so_rcv, 1, so_locked); 3213 } 3214 3215 3216 3217 static void 3218 sctp_notify_adaptation_layer(struct sctp_tcb *stcb, 3219 uint32_t error) 3220 { 3221 struct mbuf *m_notify; 3222 struct sctp_adaptation_event *sai; 3223 struct sctp_queued_to_read *control; 3224 3225 if ((stcb == NULL) || (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_ADAPTATIONEVNT))) 3226 /* event not enabled */ 3227 return; 3228 3229 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_DONTWAIT, 1, MT_DATA); 3230 if (m_notify == NULL) 3231 /* no space left */ 3232 return; 3233 SCTP_BUF_LEN(m_notify) = 0; 3234 sai = mtod(m_notify, struct sctp_adaptation_event *); 3235 sai->sai_type = SCTP_ADAPTATION_INDICATION; 3236 sai->sai_flags = 0; 3237 sai->sai_length = sizeof(struct sctp_adaptation_event); 3238 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation; 3239 sai->sai_assoc_id = sctp_get_associd(stcb); 3240 3241 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event); 3242 SCTP_BUF_NEXT(m_notify) = NULL; 3243 3244 /* append to socket */ 3245 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3246 0, 0, 0, 0, 0, 0, 3247 m_notify); 3248 if (control == NULL) { 3249 /* no memory */ 3250 sctp_m_freem(m_notify); 3251 return; 3252 } 3253 control->length = SCTP_BUF_LEN(m_notify); 3254 control->spec_flags = M_NOTIFICATION; 3255 /* not that we need this */ 3256 control->tail_mbuf = m_notify; 3257 sctp_add_to_readq(stcb->sctp_ep, stcb, 3258 control, 3259 &stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED); 3260 } 3261 3262 /* This always must be called with the read-queue LOCKED in the INP */ 3263 void 3264 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error, 3265 int nolock, uint32_t val) 3266 { 3267 struct mbuf *m_notify; 3268 struct sctp_pdapi_event *pdapi; 3269 struct sctp_queued_to_read *control; 3270 struct sockbuf *sb; 3271 3272 if ((stcb == NULL) || (stcb->sctp_socket == NULL) || 3273 sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_PDAPIEVNT)) 3274 /* event not enabled */ 3275 return; 3276 3277 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_DONTWAIT, 1, MT_DATA); 3278 if (m_notify == NULL) 3279 /* no space left */ 3280 return; 3281 SCTP_BUF_LEN(m_notify) = 0; 3282 pdapi = mtod(m_notify, struct sctp_pdapi_event *); 3283 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT; 3284 pdapi->pdapi_flags = 0; 3285 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event); 3286 pdapi->pdapi_indication = error; 3287 pdapi->pdapi_stream = (val >> 16); 3288 pdapi->pdapi_seq = (val & 0x0000ffff); 3289 pdapi->pdapi_assoc_id = sctp_get_associd(stcb); 3290 3291 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event); 3292 SCTP_BUF_NEXT(m_notify) = NULL; 3293 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3294 0, 0, 0, 0, 0, 0, 3295 m_notify); 3296 if (control == NULL) { 3297 /* no memory */ 3298 sctp_m_freem(m_notify); 3299 return; 3300 } 3301 control->spec_flags = M_NOTIFICATION; 3302 control->length = SCTP_BUF_LEN(m_notify); 3303 /* not that we need this */ 3304 control->tail_mbuf = m_notify; 3305 control->held_length = 0; 3306 control->length = 0; 3307 if (nolock == 0) { 3308 SCTP_INP_READ_LOCK(stcb->sctp_ep); 3309 } 3310 sb = &stcb->sctp_socket->so_rcv; 3311 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 3312 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify)); 3313 } 3314 sctp_sballoc(stcb, sb, m_notify); 3315 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 3316 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 3317 } 3318 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify)); 3319 control->end_added = 1; 3320 if (stcb->asoc.control_pdapi) 3321 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next); 3322 else { 3323 /* we really should not see this case */ 3324 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next); 3325 } 3326 if (nolock == 0) { 3327 SCTP_INP_READ_UNLOCK(stcb->sctp_ep); 3328 } 3329 if (stcb->sctp_ep && stcb->sctp_socket) { 3330 /* This should always be the case */ 3331 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); 3332 } 3333 } 3334 3335 static void 3336 sctp_notify_shutdown_event(struct sctp_tcb *stcb) 3337 { 3338 struct mbuf *m_notify; 3339 struct sctp_shutdown_event *sse; 3340 struct sctp_queued_to_read *control; 3341 3342 /* 3343 * For TCP model AND UDP connected sockets we will send an error up 3344 * when an SHUTDOWN completes 3345 */ 3346 if (stcb == NULL) { 3347 return; 3348 } 3349 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3350 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 3351 /* mark socket closed for read/write and wakeup! */ 3352 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3353 struct socket *so; 3354 3355 so = SCTP_INP_SO(stcb->sctp_ep); 3356 atomic_add_int(&stcb->asoc.refcnt, 1); 3357 SCTP_TCB_UNLOCK(stcb); 3358 SCTP_SOCKET_LOCK(so, 1); 3359 SCTP_TCB_LOCK(stcb); 3360 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3361 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 3362 SCTP_SOCKET_UNLOCK(so, 1); 3363 return; 3364 } 3365 #endif 3366 socantsendmore(stcb->sctp_socket); 3367 socantrcvmore(stcb->sctp_socket); 3368 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3369 SCTP_SOCKET_UNLOCK(so, 1); 3370 #endif 3371 } 3372 if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) 3373 /* event not enabled */ 3374 return; 3375 3376 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_DONTWAIT, 1, MT_DATA); 3377 if (m_notify == NULL) 3378 /* no space left */ 3379 return; 3380 sse = mtod(m_notify, struct sctp_shutdown_event *); 3381 sse->sse_type = SCTP_SHUTDOWN_EVENT; 3382 sse->sse_flags = 0; 3383 sse->sse_length = sizeof(struct sctp_shutdown_event); 3384 sse->sse_assoc_id = sctp_get_associd(stcb); 3385 3386 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event); 3387 SCTP_BUF_NEXT(m_notify) = NULL; 3388 3389 /* append to socket */ 3390 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3391 0, 0, 0, 0, 0, 0, 3392 m_notify); 3393 if (control == NULL) { 3394 /* no memory */ 3395 sctp_m_freem(m_notify); 3396 return; 3397 } 3398 control->spec_flags = M_NOTIFICATION; 3399 control->length = SCTP_BUF_LEN(m_notify); 3400 /* not that we need this */ 3401 control->tail_mbuf = m_notify; 3402 sctp_add_to_readq(stcb->sctp_ep, stcb, 3403 control, 3404 &stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED); 3405 } 3406 3407 static void 3408 sctp_notify_stream_reset(struct sctp_tcb *stcb, 3409 int number_entries, uint16_t * list, int flag) 3410 { 3411 struct mbuf *m_notify; 3412 struct sctp_queued_to_read *control; 3413 struct sctp_stream_reset_event *strreset; 3414 int len; 3415 3416 if (stcb == NULL) { 3417 return; 3418 } 3419 if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) 3420 /* event not enabled */ 3421 return; 3422 3423 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA); 3424 if (m_notify == NULL) 3425 /* no space left */ 3426 return; 3427 SCTP_BUF_LEN(m_notify) = 0; 3428 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t)); 3429 if (len > M_TRAILINGSPACE(m_notify)) { 3430 /* never enough room */ 3431 sctp_m_freem(m_notify); 3432 return; 3433 } 3434 strreset = mtod(m_notify, struct sctp_stream_reset_event *); 3435 strreset->strreset_type = SCTP_STREAM_RESET_EVENT; 3436 if (number_entries == 0) { 3437 strreset->strreset_flags = flag | SCTP_STRRESET_ALL_STREAMS; 3438 } else { 3439 strreset->strreset_flags = flag | SCTP_STRRESET_STREAM_LIST; 3440 } 3441 strreset->strreset_length = len; 3442 strreset->strreset_assoc_id = sctp_get_associd(stcb); 3443 if (number_entries) { 3444 int i; 3445 3446 for (i = 0; i < number_entries; i++) { 3447 strreset->strreset_list[i] = ntohs(list[i]); 3448 } 3449 } 3450 SCTP_BUF_LEN(m_notify) = len; 3451 SCTP_BUF_NEXT(m_notify) = NULL; 3452 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3453 /* no space */ 3454 sctp_m_freem(m_notify); 3455 return; 3456 } 3457 /* append to socket */ 3458 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3459 0, 0, 0, 0, 0, 0, 3460 m_notify); 3461 if (control == NULL) { 3462 /* no memory */ 3463 sctp_m_freem(m_notify); 3464 return; 3465 } 3466 control->spec_flags = M_NOTIFICATION; 3467 control->length = SCTP_BUF_LEN(m_notify); 3468 /* not that we need this */ 3469 control->tail_mbuf = m_notify; 3470 sctp_add_to_readq(stcb->sctp_ep, stcb, 3471 control, 3472 &stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED); 3473 } 3474 3475 3476 void 3477 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb, 3478 uint32_t error, void *data, int so_locked 3479 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3480 SCTP_UNUSED 3481 #endif 3482 ) 3483 { 3484 if (stcb == NULL) { 3485 /* unlikely but */ 3486 return; 3487 } 3488 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3489 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3490 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) 3491 ) { 3492 /* No notifications up when we are in a no socket state */ 3493 return; 3494 } 3495 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 3496 /* Can't send up to a closed socket any notifications */ 3497 return; 3498 } 3499 if (stcb && ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) || 3500 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED))) { 3501 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) || 3502 (notification == SCTP_NOTIFY_INTERFACE_UP) || 3503 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) { 3504 /* Don't report these in front states */ 3505 return; 3506 } 3507 } 3508 switch (notification) { 3509 case SCTP_NOTIFY_ASSOC_UP: 3510 if (stcb->asoc.assoc_up_sent == 0) { 3511 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, so_locked); 3512 stcb->asoc.assoc_up_sent = 1; 3513 } 3514 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) { 3515 sctp_notify_adaptation_layer(stcb, error); 3516 } 3517 break; 3518 case SCTP_NOTIFY_ASSOC_DOWN: 3519 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, so_locked); 3520 break; 3521 case SCTP_NOTIFY_INTERFACE_DOWN: 3522 { 3523 struct sctp_nets *net; 3524 3525 net = (struct sctp_nets *)data; 3526 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE, 3527 (struct sockaddr *)&net->ro._l_addr, error); 3528 break; 3529 } 3530 case SCTP_NOTIFY_INTERFACE_UP: 3531 { 3532 struct sctp_nets *net; 3533 3534 net = (struct sctp_nets *)data; 3535 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE, 3536 (struct sockaddr *)&net->ro._l_addr, error); 3537 break; 3538 } 3539 case SCTP_NOTIFY_INTERFACE_CONFIRMED: 3540 { 3541 struct sctp_nets *net; 3542 3543 net = (struct sctp_nets *)data; 3544 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED, 3545 (struct sockaddr *)&net->ro._l_addr, error); 3546 break; 3547 } 3548 case SCTP_NOTIFY_SPECIAL_SP_FAIL: 3549 sctp_notify_send_failed2(stcb, error, 3550 (struct sctp_stream_queue_pending *)data, so_locked); 3551 break; 3552 case SCTP_NOTIFY_DG_FAIL: 3553 sctp_notify_send_failed(stcb, error, 3554 (struct sctp_tmit_chunk *)data, so_locked); 3555 break; 3556 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION: 3557 { 3558 uint32_t val; 3559 3560 val = *((uint32_t *) data); 3561 3562 sctp_notify_partial_delivery_indication(stcb, error, 0, val); 3563 } 3564 break; 3565 case SCTP_NOTIFY_STRDATA_ERR: 3566 break; 3567 case SCTP_NOTIFY_ASSOC_ABORTED: 3568 if ((stcb) && (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) || 3569 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED))) { 3570 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, NULL, so_locked); 3571 } else { 3572 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, NULL, so_locked); 3573 } 3574 break; 3575 case SCTP_NOTIFY_PEER_OPENED_STREAM: 3576 break; 3577 case SCTP_NOTIFY_STREAM_OPENED_OK: 3578 break; 3579 case SCTP_NOTIFY_ASSOC_RESTART: 3580 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, data, so_locked); 3581 break; 3582 case SCTP_NOTIFY_HB_RESP: 3583 break; 3584 case SCTP_NOTIFY_STR_RESET_SEND: 3585 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STRRESET_OUTBOUND_STR); 3586 break; 3587 case SCTP_NOTIFY_STR_RESET_RECV: 3588 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STRRESET_INBOUND_STR); 3589 break; 3590 case SCTP_NOTIFY_STR_RESET_FAILED_OUT: 3591 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STRRESET_OUTBOUND_STR | SCTP_STRRESET_FAILED)); 3592 break; 3593 3594 case SCTP_NOTIFY_STR_RESET_FAILED_IN: 3595 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STRRESET_INBOUND_STR | SCTP_STRRESET_FAILED)); 3596 break; 3597 3598 case SCTP_NOTIFY_ASCONF_ADD_IP: 3599 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data, 3600 error); 3601 break; 3602 case SCTP_NOTIFY_ASCONF_DELETE_IP: 3603 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data, 3604 error); 3605 break; 3606 case SCTP_NOTIFY_ASCONF_SET_PRIMARY: 3607 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data, 3608 error); 3609 break; 3610 case SCTP_NOTIFY_ASCONF_SUCCESS: 3611 break; 3612 case SCTP_NOTIFY_ASCONF_FAILED: 3613 break; 3614 case SCTP_NOTIFY_PEER_SHUTDOWN: 3615 sctp_notify_shutdown_event(stcb); 3616 break; 3617 case SCTP_NOTIFY_AUTH_NEW_KEY: 3618 sctp_notify_authentication(stcb, SCTP_AUTH_NEWKEY, error, 3619 (uint16_t) (uintptr_t) data); 3620 break; 3621 #if 0 3622 case SCTP_NOTIFY_AUTH_KEY_CONFLICT: 3623 sctp_notify_authentication(stcb, SCTP_AUTH_KEY_CONFLICT, 3624 error, (uint16_t) (uintptr_t) data); 3625 break; 3626 #endif /* not yet? remove? */ 3627 3628 3629 default: 3630 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n", 3631 __FUNCTION__, notification, notification); 3632 break; 3633 } /* end switch */ 3634 } 3635 3636 void 3637 sctp_report_all_outbound(struct sctp_tcb *stcb, int holds_lock, int so_locked 3638 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3639 SCTP_UNUSED 3640 #endif 3641 ) 3642 { 3643 struct sctp_association *asoc; 3644 struct sctp_stream_out *outs; 3645 struct sctp_tmit_chunk *chk; 3646 struct sctp_stream_queue_pending *sp; 3647 int i; 3648 3649 asoc = &stcb->asoc; 3650 3651 if (stcb == NULL) { 3652 return; 3653 } 3654 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3655 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3656 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 3657 return; 3658 } 3659 /* now through all the gunk freeing chunks */ 3660 if (holds_lock == 0) { 3661 SCTP_TCB_SEND_LOCK(stcb); 3662 } 3663 /* sent queue SHOULD be empty */ 3664 if (!TAILQ_EMPTY(&asoc->sent_queue)) { 3665 chk = TAILQ_FIRST(&asoc->sent_queue); 3666 while (chk) { 3667 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next); 3668 asoc->sent_queue_cnt--; 3669 if (chk->data) { 3670 /* 3671 * trim off the sctp chunk header(it should 3672 * be there) 3673 */ 3674 if (chk->send_size >= sizeof(struct sctp_data_chunk)) { 3675 m_adj(chk->data, sizeof(struct sctp_data_chunk)); 3676 sctp_mbuf_crush(chk->data); 3677 chk->send_size -= sizeof(struct sctp_data_chunk); 3678 } 3679 } 3680 sctp_free_bufspace(stcb, asoc, chk, 1); 3681 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, 3682 SCTP_NOTIFY_DATAGRAM_SENT, chk, so_locked); 3683 if (chk->data) { 3684 sctp_m_freem(chk->data); 3685 chk->data = NULL; 3686 } 3687 sctp_free_a_chunk(stcb, chk); 3688 /* sa_ignore FREED_MEMORY */ 3689 chk = TAILQ_FIRST(&asoc->sent_queue); 3690 } 3691 } 3692 /* pending send queue SHOULD be empty */ 3693 if (!TAILQ_EMPTY(&asoc->send_queue)) { 3694 chk = TAILQ_FIRST(&asoc->send_queue); 3695 while (chk) { 3696 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next); 3697 asoc->send_queue_cnt--; 3698 if (chk->data) { 3699 /* 3700 * trim off the sctp chunk header(it should 3701 * be there) 3702 */ 3703 if (chk->send_size >= sizeof(struct sctp_data_chunk)) { 3704 m_adj(chk->data, sizeof(struct sctp_data_chunk)); 3705 sctp_mbuf_crush(chk->data); 3706 chk->send_size -= sizeof(struct sctp_data_chunk); 3707 } 3708 } 3709 sctp_free_bufspace(stcb, asoc, chk, 1); 3710 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, SCTP_NOTIFY_DATAGRAM_UNSENT, chk, so_locked); 3711 if (chk->data) { 3712 sctp_m_freem(chk->data); 3713 chk->data = NULL; 3714 } 3715 sctp_free_a_chunk(stcb, chk); 3716 /* sa_ignore FREED_MEMORY */ 3717 chk = TAILQ_FIRST(&asoc->send_queue); 3718 } 3719 } 3720 for (i = 0; i < stcb->asoc.streamoutcnt; i++) { 3721 /* For each stream */ 3722 outs = &stcb->asoc.strmout[i]; 3723 /* clean up any sends there */ 3724 stcb->asoc.locked_on_sending = NULL; 3725 sp = TAILQ_FIRST(&outs->outqueue); 3726 while (sp) { 3727 stcb->asoc.stream_queue_cnt--; 3728 TAILQ_REMOVE(&outs->outqueue, sp, next); 3729 sctp_free_spbufspace(stcb, asoc, sp); 3730 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb, 3731 SCTP_NOTIFY_DATAGRAM_UNSENT, (void *)sp, so_locked); 3732 if (sp->data) { 3733 sctp_m_freem(sp->data); 3734 sp->data = NULL; 3735 } 3736 if (sp->net) 3737 sctp_free_remote_addr(sp->net); 3738 sp->net = NULL; 3739 /* Free the chunk */ 3740 sctp_free_a_strmoq(stcb, sp); 3741 /* sa_ignore FREED_MEMORY */ 3742 sp = TAILQ_FIRST(&outs->outqueue); 3743 } 3744 } 3745 3746 if (holds_lock == 0) { 3747 SCTP_TCB_SEND_UNLOCK(stcb); 3748 } 3749 } 3750 3751 void 3752 sctp_abort_notification(struct sctp_tcb *stcb, int error, int so_locked 3753 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3754 SCTP_UNUSED 3755 #endif 3756 ) 3757 { 3758 3759 if (stcb == NULL) { 3760 return; 3761 } 3762 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3763 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3764 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 3765 return; 3766 } 3767 /* Tell them we lost the asoc */ 3768 sctp_report_all_outbound(stcb, 1, so_locked); 3769 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || 3770 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 3771 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) { 3772 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED; 3773 } 3774 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_ABORTED, stcb, error, NULL, so_locked); 3775 } 3776 3777 void 3778 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 3779 struct mbuf *m, int iphlen, struct sctphdr *sh, struct mbuf *op_err, 3780 uint32_t vrf_id) 3781 { 3782 uint32_t vtag; 3783 3784 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3785 struct socket *so; 3786 3787 #endif 3788 3789 vtag = 0; 3790 if (stcb != NULL) { 3791 /* We have a TCB to abort, send notification too */ 3792 vtag = stcb->asoc.peer_vtag; 3793 sctp_abort_notification(stcb, 0, SCTP_SO_NOT_LOCKED); 3794 /* get the assoc vrf id and table id */ 3795 vrf_id = stcb->asoc.vrf_id; 3796 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; 3797 } 3798 sctp_send_abort(m, iphlen, sh, vtag, op_err, vrf_id); 3799 if (stcb != NULL) { 3800 /* Ok, now lets free it */ 3801 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3802 so = SCTP_INP_SO(inp); 3803 atomic_add_int(&stcb->asoc.refcnt, 1); 3804 SCTP_TCB_UNLOCK(stcb); 3805 SCTP_SOCKET_LOCK(so, 1); 3806 SCTP_TCB_LOCK(stcb); 3807 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3808 #endif 3809 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4); 3810 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3811 SCTP_SOCKET_UNLOCK(so, 1); 3812 #endif 3813 } else { 3814 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 3815 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) { 3816 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 3817 SCTP_CALLED_DIRECTLY_NOCMPSET); 3818 } 3819 } 3820 } 3821 } 3822 3823 #ifdef SCTP_ASOCLOG_OF_TSNS 3824 void 3825 sctp_print_out_track_log(struct sctp_tcb *stcb) 3826 { 3827 #ifdef NOSIY_PRINTS 3828 int i; 3829 3830 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code); 3831 SCTP_PRINTF("IN bound TSN log-aaa\n"); 3832 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) { 3833 SCTP_PRINTF("None rcvd\n"); 3834 goto none_in; 3835 } 3836 if (stcb->asoc.tsn_in_wrapped) { 3837 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) { 3838 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 3839 stcb->asoc.in_tsnlog[i].tsn, 3840 stcb->asoc.in_tsnlog[i].strm, 3841 stcb->asoc.in_tsnlog[i].seq, 3842 stcb->asoc.in_tsnlog[i].flgs, 3843 stcb->asoc.in_tsnlog[i].sz); 3844 } 3845 } 3846 if (stcb->asoc.tsn_in_at) { 3847 for (i = 0; i < stcb->asoc.tsn_in_at; i++) { 3848 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 3849 stcb->asoc.in_tsnlog[i].tsn, 3850 stcb->asoc.in_tsnlog[i].strm, 3851 stcb->asoc.in_tsnlog[i].seq, 3852 stcb->asoc.in_tsnlog[i].flgs, 3853 stcb->asoc.in_tsnlog[i].sz); 3854 } 3855 } 3856 none_in: 3857 SCTP_PRINTF("OUT bound TSN log-aaa\n"); 3858 if ((stcb->asoc.tsn_out_at == 0) && 3859 (stcb->asoc.tsn_out_wrapped == 0)) { 3860 SCTP_PRINTF("None sent\n"); 3861 } 3862 if (stcb->asoc.tsn_out_wrapped) { 3863 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) { 3864 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 3865 stcb->asoc.out_tsnlog[i].tsn, 3866 stcb->asoc.out_tsnlog[i].strm, 3867 stcb->asoc.out_tsnlog[i].seq, 3868 stcb->asoc.out_tsnlog[i].flgs, 3869 stcb->asoc.out_tsnlog[i].sz); 3870 } 3871 } 3872 if (stcb->asoc.tsn_out_at) { 3873 for (i = 0; i < stcb->asoc.tsn_out_at; i++) { 3874 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 3875 stcb->asoc.out_tsnlog[i].tsn, 3876 stcb->asoc.out_tsnlog[i].strm, 3877 stcb->asoc.out_tsnlog[i].seq, 3878 stcb->asoc.out_tsnlog[i].flgs, 3879 stcb->asoc.out_tsnlog[i].sz); 3880 } 3881 } 3882 #endif 3883 } 3884 3885 #endif 3886 3887 void 3888 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 3889 int error, struct mbuf *op_err, 3890 int so_locked 3891 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3892 SCTP_UNUSED 3893 #endif 3894 ) 3895 { 3896 uint32_t vtag; 3897 3898 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3899 struct socket *so; 3900 3901 #endif 3902 3903 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3904 so = SCTP_INP_SO(inp); 3905 #endif 3906 if (stcb == NULL) { 3907 /* Got to have a TCB */ 3908 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 3909 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) { 3910 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 3911 SCTP_CALLED_DIRECTLY_NOCMPSET); 3912 } 3913 } 3914 return; 3915 } else { 3916 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; 3917 } 3918 vtag = stcb->asoc.peer_vtag; 3919 /* notify the ulp */ 3920 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) 3921 sctp_abort_notification(stcb, error, so_locked); 3922 /* notify the peer */ 3923 #if defined(SCTP_PANIC_ON_ABORT) 3924 panic("aborting an association"); 3925 #endif 3926 sctp_send_abort_tcb(stcb, op_err, so_locked); 3927 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 3928 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || 3929 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 3930 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 3931 } 3932 /* now free the asoc */ 3933 #ifdef SCTP_ASOCLOG_OF_TSNS 3934 sctp_print_out_track_log(stcb); 3935 #endif 3936 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3937 if (!so_locked) { 3938 atomic_add_int(&stcb->asoc.refcnt, 1); 3939 SCTP_TCB_UNLOCK(stcb); 3940 SCTP_SOCKET_LOCK(so, 1); 3941 SCTP_TCB_LOCK(stcb); 3942 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3943 } 3944 #endif 3945 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5); 3946 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3947 if (!so_locked) { 3948 SCTP_SOCKET_UNLOCK(so, 1); 3949 } 3950 #endif 3951 } 3952 3953 void 3954 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, struct sctphdr *sh, 3955 struct sctp_inpcb *inp, struct mbuf *op_err, uint32_t vrf_id) 3956 { 3957 struct sctp_chunkhdr *ch, chunk_buf; 3958 unsigned int chk_length; 3959 3960 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue); 3961 /* Generate a TO address for future reference */ 3962 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { 3963 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) { 3964 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 3965 SCTP_CALLED_DIRECTLY_NOCMPSET); 3966 } 3967 } 3968 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 3969 sizeof(*ch), (uint8_t *) & chunk_buf); 3970 while (ch != NULL) { 3971 chk_length = ntohs(ch->chunk_length); 3972 if (chk_length < sizeof(*ch)) { 3973 /* break to abort land */ 3974 break; 3975 } 3976 switch (ch->chunk_type) { 3977 case SCTP_COOKIE_ECHO: 3978 /* We hit here only if the assoc is being freed */ 3979 return; 3980 case SCTP_PACKET_DROPPED: 3981 /* we don't respond to pkt-dropped */ 3982 return; 3983 case SCTP_ABORT_ASSOCIATION: 3984 /* we don't respond with an ABORT to an ABORT */ 3985 return; 3986 case SCTP_SHUTDOWN_COMPLETE: 3987 /* 3988 * we ignore it since we are not waiting for it and 3989 * peer is gone 3990 */ 3991 return; 3992 case SCTP_SHUTDOWN_ACK: 3993 sctp_send_shutdown_complete2(m, iphlen, sh, vrf_id); 3994 return; 3995 default: 3996 break; 3997 } 3998 offset += SCTP_SIZE32(chk_length); 3999 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4000 sizeof(*ch), (uint8_t *) & chunk_buf); 4001 } 4002 sctp_send_abort(m, iphlen, sh, 0, op_err, vrf_id); 4003 } 4004 4005 /* 4006 * check the inbound datagram to make sure there is not an abort inside it, 4007 * if there is return 1, else return 0. 4008 */ 4009 int 4010 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill) 4011 { 4012 struct sctp_chunkhdr *ch; 4013 struct sctp_init_chunk *init_chk, chunk_buf; 4014 int offset; 4015 unsigned int chk_length; 4016 4017 offset = iphlen + sizeof(struct sctphdr); 4018 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), 4019 (uint8_t *) & chunk_buf); 4020 while (ch != NULL) { 4021 chk_length = ntohs(ch->chunk_length); 4022 if (chk_length < sizeof(*ch)) { 4023 /* packet is probably corrupt */ 4024 break; 4025 } 4026 /* we seem to be ok, is it an abort? */ 4027 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) { 4028 /* yep, tell them */ 4029 return (1); 4030 } 4031 if (ch->chunk_type == SCTP_INITIATION) { 4032 /* need to update the Vtag */ 4033 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 4034 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf); 4035 if (init_chk != NULL) { 4036 *vtagfill = ntohl(init_chk->init.initiate_tag); 4037 } 4038 } 4039 /* Nope, move to the next chunk */ 4040 offset += SCTP_SIZE32(chk_length); 4041 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4042 sizeof(*ch), (uint8_t *) & chunk_buf); 4043 } 4044 return (0); 4045 } 4046 4047 /* 4048 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id 4049 * set (i.e. it's 0) so, create this function to compare link local scopes 4050 */ 4051 uint32_t 4052 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2) 4053 { 4054 struct sockaddr_in6 a, b; 4055 4056 /* save copies */ 4057 a = *addr1; 4058 b = *addr2; 4059 4060 if (a.sin6_scope_id == 0) 4061 if (sa6_recoverscope(&a)) { 4062 /* can't get scope, so can't match */ 4063 return (0); 4064 } 4065 if (b.sin6_scope_id == 0) 4066 if (sa6_recoverscope(&b)) { 4067 /* can't get scope, so can't match */ 4068 return (0); 4069 } 4070 if (a.sin6_scope_id != b.sin6_scope_id) 4071 return (0); 4072 4073 return (1); 4074 } 4075 4076 /* 4077 * returns a sockaddr_in6 with embedded scope recovered and removed 4078 */ 4079 struct sockaddr_in6 * 4080 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store) 4081 { 4082 /* check and strip embedded scope junk */ 4083 if (addr->sin6_family == AF_INET6) { 4084 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) { 4085 if (addr->sin6_scope_id == 0) { 4086 *store = *addr; 4087 if (!sa6_recoverscope(store)) { 4088 /* use the recovered scope */ 4089 addr = store; 4090 } 4091 } else { 4092 /* else, return the original "to" addr */ 4093 in6_clearscope(&addr->sin6_addr); 4094 } 4095 } 4096 } 4097 return (addr); 4098 } 4099 4100 /* 4101 * are the two addresses the same? currently a "scopeless" check returns: 1 4102 * if same, 0 if not 4103 */ 4104 int 4105 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2) 4106 { 4107 4108 /* must be valid */ 4109 if (sa1 == NULL || sa2 == NULL) 4110 return (0); 4111 4112 /* must be the same family */ 4113 if (sa1->sa_family != sa2->sa_family) 4114 return (0); 4115 4116 if (sa1->sa_family == AF_INET6) { 4117 /* IPv6 addresses */ 4118 struct sockaddr_in6 *sin6_1, *sin6_2; 4119 4120 sin6_1 = (struct sockaddr_in6 *)sa1; 4121 sin6_2 = (struct sockaddr_in6 *)sa2; 4122 return (SCTP6_ARE_ADDR_EQUAL(&sin6_1->sin6_addr, 4123 &sin6_2->sin6_addr)); 4124 } else if (sa1->sa_family == AF_INET) { 4125 /* IPv4 addresses */ 4126 struct sockaddr_in *sin_1, *sin_2; 4127 4128 sin_1 = (struct sockaddr_in *)sa1; 4129 sin_2 = (struct sockaddr_in *)sa2; 4130 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr); 4131 } else { 4132 /* we don't do these... */ 4133 return (0); 4134 } 4135 } 4136 4137 void 4138 sctp_print_address(struct sockaddr *sa) 4139 { 4140 char ip6buf[INET6_ADDRSTRLEN]; 4141 4142 ip6buf[0] = 0; 4143 if (sa->sa_family == AF_INET6) { 4144 struct sockaddr_in6 *sin6; 4145 4146 sin6 = (struct sockaddr_in6 *)sa; 4147 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n", 4148 ip6_sprintf(ip6buf, &sin6->sin6_addr), 4149 ntohs(sin6->sin6_port), 4150 sin6->sin6_scope_id); 4151 } else if (sa->sa_family == AF_INET) { 4152 struct sockaddr_in *sin; 4153 unsigned char *p; 4154 4155 sin = (struct sockaddr_in *)sa; 4156 p = (unsigned char *)&sin->sin_addr; 4157 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n", 4158 p[0], p[1], p[2], p[3], ntohs(sin->sin_port)); 4159 } else { 4160 SCTP_PRINTF("?\n"); 4161 } 4162 } 4163 4164 void 4165 sctp_print_address_pkt(struct ip *iph, struct sctphdr *sh) 4166 { 4167 if (iph->ip_v == IPVERSION) { 4168 struct sockaddr_in lsa, fsa; 4169 4170 bzero(&lsa, sizeof(lsa)); 4171 lsa.sin_len = sizeof(lsa); 4172 lsa.sin_family = AF_INET; 4173 lsa.sin_addr = iph->ip_src; 4174 lsa.sin_port = sh->src_port; 4175 bzero(&fsa, sizeof(fsa)); 4176 fsa.sin_len = sizeof(fsa); 4177 fsa.sin_family = AF_INET; 4178 fsa.sin_addr = iph->ip_dst; 4179 fsa.sin_port = sh->dest_port; 4180 SCTP_PRINTF("src: "); 4181 sctp_print_address((struct sockaddr *)&lsa); 4182 SCTP_PRINTF("dest: "); 4183 sctp_print_address((struct sockaddr *)&fsa); 4184 } else if (iph->ip_v == (IPV6_VERSION >> 4)) { 4185 struct ip6_hdr *ip6; 4186 struct sockaddr_in6 lsa6, fsa6; 4187 4188 ip6 = (struct ip6_hdr *)iph; 4189 bzero(&lsa6, sizeof(lsa6)); 4190 lsa6.sin6_len = sizeof(lsa6); 4191 lsa6.sin6_family = AF_INET6; 4192 lsa6.sin6_addr = ip6->ip6_src; 4193 lsa6.sin6_port = sh->src_port; 4194 bzero(&fsa6, sizeof(fsa6)); 4195 fsa6.sin6_len = sizeof(fsa6); 4196 fsa6.sin6_family = AF_INET6; 4197 fsa6.sin6_addr = ip6->ip6_dst; 4198 fsa6.sin6_port = sh->dest_port; 4199 SCTP_PRINTF("src: "); 4200 sctp_print_address((struct sockaddr *)&lsa6); 4201 SCTP_PRINTF("dest: "); 4202 sctp_print_address((struct sockaddr *)&fsa6); 4203 } 4204 } 4205 4206 void 4207 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 4208 struct sctp_inpcb *new_inp, 4209 struct sctp_tcb *stcb, 4210 int waitflags) 4211 { 4212 /* 4213 * go through our old INP and pull off any control structures that 4214 * belong to stcb and move then to the new inp. 4215 */ 4216 struct socket *old_so, *new_so; 4217 struct sctp_queued_to_read *control, *nctl; 4218 struct sctp_readhead tmp_queue; 4219 struct mbuf *m; 4220 int error = 0; 4221 4222 old_so = old_inp->sctp_socket; 4223 new_so = new_inp->sctp_socket; 4224 TAILQ_INIT(&tmp_queue); 4225 error = sblock(&old_so->so_rcv, waitflags); 4226 if (error) { 4227 /* 4228 * Gak, can't get sblock, we have a problem. data will be 4229 * left stranded.. and we don't dare look at it since the 4230 * other thread may be reading something. Oh well, its a 4231 * screwed up app that does a peeloff OR a accept while 4232 * reading from the main socket... actually its only the 4233 * peeloff() case, since I think read will fail on a 4234 * listening socket.. 4235 */ 4236 return; 4237 } 4238 /* lock the socket buffers */ 4239 SCTP_INP_READ_LOCK(old_inp); 4240 control = TAILQ_FIRST(&old_inp->read_queue); 4241 /* Pull off all for out target stcb */ 4242 while (control) { 4243 nctl = TAILQ_NEXT(control, next); 4244 if (control->stcb == stcb) { 4245 /* remove it we want it */ 4246 TAILQ_REMOVE(&old_inp->read_queue, control, next); 4247 TAILQ_INSERT_TAIL(&tmp_queue, control, next); 4248 m = control->data; 4249 while (m) { 4250 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 4251 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 4252 } 4253 sctp_sbfree(control, stcb, &old_so->so_rcv, m); 4254 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 4255 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4256 } 4257 m = SCTP_BUF_NEXT(m); 4258 } 4259 } 4260 control = nctl; 4261 } 4262 SCTP_INP_READ_UNLOCK(old_inp); 4263 /* Remove the sb-lock on the old socket */ 4264 4265 sbunlock(&old_so->so_rcv); 4266 /* Now we move them over to the new socket buffer */ 4267 control = TAILQ_FIRST(&tmp_queue); 4268 SCTP_INP_READ_LOCK(new_inp); 4269 while (control) { 4270 nctl = TAILQ_NEXT(control, next); 4271 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next); 4272 m = control->data; 4273 while (m) { 4274 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 4275 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4276 } 4277 sctp_sballoc(stcb, &new_so->so_rcv, m); 4278 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 4279 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4280 } 4281 m = SCTP_BUF_NEXT(m); 4282 } 4283 control = nctl; 4284 } 4285 SCTP_INP_READ_UNLOCK(new_inp); 4286 } 4287 4288 4289 void 4290 sctp_add_to_readq(struct sctp_inpcb *inp, 4291 struct sctp_tcb *stcb, 4292 struct sctp_queued_to_read *control, 4293 struct sockbuf *sb, 4294 int end, 4295 int so_locked 4296 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 4297 SCTP_UNUSED 4298 #endif 4299 ) 4300 { 4301 /* 4302 * Here we must place the control on the end of the socket read 4303 * queue AND increment sb_cc so that select will work properly on 4304 * read. 4305 */ 4306 struct mbuf *m, *prev = NULL; 4307 4308 if (inp == NULL) { 4309 /* Gak, TSNH!! */ 4310 #ifdef INVARIANTS 4311 panic("Gak, inp NULL on add_to_readq"); 4312 #endif 4313 return; 4314 } 4315 SCTP_INP_READ_LOCK(inp); 4316 if (!(control->spec_flags & M_NOTIFICATION)) { 4317 atomic_add_int(&inp->total_recvs, 1); 4318 if (!control->do_not_ref_stcb) { 4319 atomic_add_int(&stcb->total_recvs, 1); 4320 } 4321 } 4322 m = control->data; 4323 control->held_length = 0; 4324 control->length = 0; 4325 while (m) { 4326 if (SCTP_BUF_LEN(m) == 0) { 4327 /* Skip mbufs with NO length */ 4328 if (prev == NULL) { 4329 /* First one */ 4330 control->data = sctp_m_free(m); 4331 m = control->data; 4332 } else { 4333 SCTP_BUF_NEXT(prev) = sctp_m_free(m); 4334 m = SCTP_BUF_NEXT(prev); 4335 } 4336 if (m == NULL) { 4337 control->tail_mbuf = prev;; 4338 } 4339 continue; 4340 } 4341 prev = m; 4342 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 4343 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4344 } 4345 sctp_sballoc(stcb, sb, m); 4346 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 4347 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4348 } 4349 atomic_add_int(&control->length, SCTP_BUF_LEN(m)); 4350 m = SCTP_BUF_NEXT(m); 4351 } 4352 if (prev != NULL) { 4353 control->tail_mbuf = prev; 4354 } else { 4355 /* Everything got collapsed out?? */ 4356 return; 4357 } 4358 if (end) { 4359 control->end_added = 1; 4360 } 4361 TAILQ_INSERT_TAIL(&inp->read_queue, control, next); 4362 SCTP_INP_READ_UNLOCK(inp); 4363 if (inp && inp->sctp_socket) { 4364 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 4365 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 4366 } else { 4367 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4368 struct socket *so; 4369 4370 so = SCTP_INP_SO(inp); 4371 if (!so_locked) { 4372 atomic_add_int(&stcb->asoc.refcnt, 1); 4373 SCTP_TCB_UNLOCK(stcb); 4374 SCTP_SOCKET_LOCK(so, 1); 4375 SCTP_TCB_LOCK(stcb); 4376 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4377 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4378 SCTP_SOCKET_UNLOCK(so, 1); 4379 return; 4380 } 4381 } 4382 #endif 4383 sctp_sorwakeup(inp, inp->sctp_socket); 4384 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4385 if (!so_locked) { 4386 SCTP_SOCKET_UNLOCK(so, 1); 4387 } 4388 #endif 4389 } 4390 } 4391 } 4392 4393 4394 int 4395 sctp_append_to_readq(struct sctp_inpcb *inp, 4396 struct sctp_tcb *stcb, 4397 struct sctp_queued_to_read *control, 4398 struct mbuf *m, 4399 int end, 4400 int ctls_cumack, 4401 struct sockbuf *sb) 4402 { 4403 /* 4404 * A partial delivery API event is underway. OR we are appending on 4405 * the reassembly queue. 4406 * 4407 * If PDAPI this means we need to add m to the end of the data. 4408 * Increase the length in the control AND increment the sb_cc. 4409 * Otherwise sb is NULL and all we need to do is put it at the end 4410 * of the mbuf chain. 4411 */ 4412 int len = 0; 4413 struct mbuf *mm, *tail = NULL, *prev = NULL; 4414 4415 if (inp) { 4416 SCTP_INP_READ_LOCK(inp); 4417 } 4418 if (control == NULL) { 4419 get_out: 4420 if (inp) { 4421 SCTP_INP_READ_UNLOCK(inp); 4422 } 4423 return (-1); 4424 } 4425 if (control->end_added) { 4426 /* huh this one is complete? */ 4427 goto get_out; 4428 } 4429 mm = m; 4430 if (mm == NULL) { 4431 goto get_out; 4432 } 4433 while (mm) { 4434 if (SCTP_BUF_LEN(mm) == 0) { 4435 /* Skip mbufs with NO lenght */ 4436 if (prev == NULL) { 4437 /* First one */ 4438 m = sctp_m_free(mm); 4439 mm = m; 4440 } else { 4441 SCTP_BUF_NEXT(prev) = sctp_m_free(mm); 4442 mm = SCTP_BUF_NEXT(prev); 4443 } 4444 continue; 4445 } 4446 prev = mm; 4447 len += SCTP_BUF_LEN(mm); 4448 if (sb) { 4449 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 4450 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm)); 4451 } 4452 sctp_sballoc(stcb, sb, mm); 4453 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 4454 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4455 } 4456 } 4457 mm = SCTP_BUF_NEXT(mm); 4458 } 4459 if (prev) { 4460 tail = prev; 4461 } else { 4462 /* Really there should always be a prev */ 4463 if (m == NULL) { 4464 /* Huh nothing left? */ 4465 #ifdef INVARIANTS 4466 panic("Nothing left to add?"); 4467 #else 4468 goto get_out; 4469 #endif 4470 } 4471 tail = m; 4472 } 4473 if (control->tail_mbuf) { 4474 /* append */ 4475 SCTP_BUF_NEXT(control->tail_mbuf) = m; 4476 control->tail_mbuf = tail; 4477 } else { 4478 /* nothing there */ 4479 #ifdef INVARIANTS 4480 if (control->data != NULL) { 4481 panic("This should NOT happen"); 4482 } 4483 #endif 4484 control->data = m; 4485 control->tail_mbuf = tail; 4486 } 4487 atomic_add_int(&control->length, len); 4488 if (end) { 4489 /* message is complete */ 4490 if (stcb && (control == stcb->asoc.control_pdapi)) { 4491 stcb->asoc.control_pdapi = NULL; 4492 } 4493 control->held_length = 0; 4494 control->end_added = 1; 4495 } 4496 if (stcb == NULL) { 4497 control->do_not_ref_stcb = 1; 4498 } 4499 /* 4500 * When we are appending in partial delivery, the cum-ack is used 4501 * for the actual pd-api highest tsn on this mbuf. The true cum-ack 4502 * is populated in the outbound sinfo structure from the true cumack 4503 * if the association exists... 4504 */ 4505 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack; 4506 if (inp) { 4507 SCTP_INP_READ_UNLOCK(inp); 4508 } 4509 if (inp && inp->sctp_socket) { 4510 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 4511 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 4512 } else { 4513 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4514 struct socket *so; 4515 4516 so = SCTP_INP_SO(inp); 4517 atomic_add_int(&stcb->asoc.refcnt, 1); 4518 SCTP_TCB_UNLOCK(stcb); 4519 SCTP_SOCKET_LOCK(so, 1); 4520 SCTP_TCB_LOCK(stcb); 4521 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4522 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4523 SCTP_SOCKET_UNLOCK(so, 1); 4524 return (0); 4525 } 4526 #endif 4527 sctp_sorwakeup(inp, inp->sctp_socket); 4528 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4529 SCTP_SOCKET_UNLOCK(so, 1); 4530 #endif 4531 } 4532 } 4533 return (0); 4534 } 4535 4536 4537 4538 /*************HOLD THIS COMMENT FOR PATCH FILE OF 4539 *************ALTERNATE ROUTING CODE 4540 */ 4541 4542 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF 4543 *************ALTERNATE ROUTING CODE 4544 */ 4545 4546 struct mbuf * 4547 sctp_generate_invmanparam(int err) 4548 { 4549 /* Return a MBUF with a invalid mandatory parameter */ 4550 struct mbuf *m; 4551 4552 m = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA); 4553 if (m) { 4554 struct sctp_paramhdr *ph; 4555 4556 SCTP_BUF_LEN(m) = sizeof(struct sctp_paramhdr); 4557 ph = mtod(m, struct sctp_paramhdr *); 4558 ph->param_length = htons(sizeof(struct sctp_paramhdr)); 4559 ph->param_type = htons(err); 4560 } 4561 return (m); 4562 } 4563 4564 #ifdef SCTP_MBCNT_LOGGING 4565 void 4566 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc, 4567 struct sctp_tmit_chunk *tp1, int chk_cnt) 4568 { 4569 if (tp1->data == NULL) { 4570 return; 4571 } 4572 asoc->chunks_on_out_queue -= chk_cnt; 4573 if (sctp_logging_level & SCTP_MBCNT_LOGGING_ENABLE) { 4574 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE, 4575 asoc->total_output_queue_size, 4576 tp1->book_size, 4577 0, 4578 tp1->mbcnt); 4579 } 4580 if (asoc->total_output_queue_size >= tp1->book_size) { 4581 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size); 4582 } else { 4583 asoc->total_output_queue_size = 0; 4584 } 4585 4586 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) || 4587 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) { 4588 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { 4589 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size; 4590 } else { 4591 stcb->sctp_socket->so_snd.sb_cc = 0; 4592 4593 } 4594 } 4595 } 4596 4597 #endif 4598 4599 int 4600 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1, 4601 int reason, struct sctpchunk_listhead *queue, int so_locked 4602 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 4603 SCTP_UNUSED 4604 #endif 4605 ) 4606 { 4607 int ret_sz = 0; 4608 int notdone; 4609 uint8_t foundeom = 0; 4610 4611 do { 4612 ret_sz += tp1->book_size; 4613 tp1->sent = SCTP_FORWARD_TSN_SKIP; 4614 if (tp1->data) { 4615 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4616 struct socket *so; 4617 4618 #endif 4619 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 4620 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, reason, tp1, SCTP_SO_NOT_LOCKED); 4621 sctp_m_freem(tp1->data); 4622 tp1->data = NULL; 4623 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4624 so = SCTP_INP_SO(stcb->sctp_ep); 4625 if (!so_locked) { 4626 atomic_add_int(&stcb->asoc.refcnt, 1); 4627 SCTP_TCB_UNLOCK(stcb); 4628 SCTP_SOCKET_LOCK(so, 1); 4629 SCTP_TCB_LOCK(stcb); 4630 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4631 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 4632 /* 4633 * assoc was freed while we were 4634 * unlocked 4635 */ 4636 SCTP_SOCKET_UNLOCK(so, 1); 4637 return (ret_sz); 4638 } 4639 } 4640 #endif 4641 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket); 4642 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4643 if (!so_locked) { 4644 SCTP_SOCKET_UNLOCK(so, 1); 4645 } 4646 #endif 4647 } 4648 if (PR_SCTP_BUF_ENABLED(tp1->flags)) { 4649 stcb->asoc.sent_queue_cnt_removeable--; 4650 } 4651 if (queue == &stcb->asoc.send_queue) { 4652 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next); 4653 /* on to the sent queue */ 4654 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1, 4655 sctp_next); 4656 stcb->asoc.sent_queue_cnt++; 4657 } 4658 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) == 4659 SCTP_DATA_NOT_FRAG) { 4660 /* not frag'ed we ae done */ 4661 notdone = 0; 4662 foundeom = 1; 4663 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 4664 /* end of frag, we are done */ 4665 notdone = 0; 4666 foundeom = 1; 4667 } else { 4668 /* 4669 * Its a begin or middle piece, we must mark all of 4670 * it 4671 */ 4672 notdone = 1; 4673 tp1 = TAILQ_NEXT(tp1, sctp_next); 4674 } 4675 } while (tp1 && notdone); 4676 if ((foundeom == 0) && (queue == &stcb->asoc.sent_queue)) { 4677 /* 4678 * The multi-part message was scattered across the send and 4679 * sent queue. 4680 */ 4681 tp1 = TAILQ_FIRST(&stcb->asoc.send_queue); 4682 /* 4683 * recurse throught the send_queue too, starting at the 4684 * beginning. 4685 */ 4686 if (tp1) { 4687 ret_sz += sctp_release_pr_sctp_chunk(stcb, tp1, reason, 4688 &stcb->asoc.send_queue, so_locked); 4689 } else { 4690 SCTP_PRINTF("hmm, nothing on the send queue and no EOM?\n"); 4691 } 4692 } 4693 return (ret_sz); 4694 } 4695 4696 /* 4697 * checks to see if the given address, sa, is one that is currently known by 4698 * the kernel note: can't distinguish the same address on multiple interfaces 4699 * and doesn't handle multiple addresses with different zone/scope id's note: 4700 * ifa_ifwithaddr() compares the entire sockaddr struct 4701 */ 4702 struct sctp_ifa * 4703 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, 4704 int holds_lock) 4705 { 4706 struct sctp_laddr *laddr; 4707 4708 if (holds_lock == 0) { 4709 SCTP_INP_RLOCK(inp); 4710 } 4711 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 4712 if (laddr->ifa == NULL) 4713 continue; 4714 if (addr->sa_family != laddr->ifa->address.sa.sa_family) 4715 continue; 4716 if (addr->sa_family == AF_INET) { 4717 if (((struct sockaddr_in *)addr)->sin_addr.s_addr == 4718 laddr->ifa->address.sin.sin_addr.s_addr) { 4719 /* found him. */ 4720 if (holds_lock == 0) { 4721 SCTP_INP_RUNLOCK(inp); 4722 } 4723 return (laddr->ifa); 4724 break; 4725 } 4726 } else if (addr->sa_family == AF_INET6) { 4727 if (SCTP6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)addr)->sin6_addr, 4728 &laddr->ifa->address.sin6.sin6_addr)) { 4729 /* found him. */ 4730 if (holds_lock == 0) { 4731 SCTP_INP_RUNLOCK(inp); 4732 } 4733 return (laddr->ifa); 4734 break; 4735 } 4736 } 4737 } 4738 if (holds_lock == 0) { 4739 SCTP_INP_RUNLOCK(inp); 4740 } 4741 return (NULL); 4742 } 4743 4744 uint32_t 4745 sctp_get_ifa_hash_val(struct sockaddr *addr) 4746 { 4747 if (addr->sa_family == AF_INET) { 4748 struct sockaddr_in *sin; 4749 4750 sin = (struct sockaddr_in *)addr; 4751 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16)); 4752 } else if (addr->sa_family == AF_INET6) { 4753 struct sockaddr_in6 *sin6; 4754 uint32_t hash_of_addr; 4755 4756 sin6 = (struct sockaddr_in6 *)addr; 4757 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] + 4758 sin6->sin6_addr.s6_addr32[1] + 4759 sin6->sin6_addr.s6_addr32[2] + 4760 sin6->sin6_addr.s6_addr32[3]); 4761 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16)); 4762 return (hash_of_addr); 4763 } 4764 return (0); 4765 } 4766 4767 struct sctp_ifa * 4768 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock) 4769 { 4770 struct sctp_ifa *sctp_ifap; 4771 struct sctp_vrf *vrf; 4772 struct sctp_ifalist *hash_head; 4773 uint32_t hash_of_addr; 4774 4775 if (holds_lock == 0) 4776 SCTP_IPI_ADDR_RLOCK(); 4777 4778 vrf = sctp_find_vrf(vrf_id); 4779 if (vrf == NULL) { 4780 if (holds_lock == 0) 4781 SCTP_IPI_ADDR_RUNLOCK(); 4782 return (NULL); 4783 } 4784 hash_of_addr = sctp_get_ifa_hash_val(addr); 4785 4786 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)]; 4787 if (hash_head == NULL) { 4788 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ", 4789 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark, 4790 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark)); 4791 sctp_print_address(addr); 4792 SCTP_PRINTF("No such bucket for address\n"); 4793 if (holds_lock == 0) 4794 SCTP_IPI_ADDR_RUNLOCK(); 4795 4796 return (NULL); 4797 } 4798 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) { 4799 if (sctp_ifap == NULL) { 4800 panic("Huh LIST_FOREACH corrupt"); 4801 } 4802 if (addr->sa_family != sctp_ifap->address.sa.sa_family) 4803 continue; 4804 if (addr->sa_family == AF_INET) { 4805 if (((struct sockaddr_in *)addr)->sin_addr.s_addr == 4806 sctp_ifap->address.sin.sin_addr.s_addr) { 4807 /* found him. */ 4808 if (holds_lock == 0) 4809 SCTP_IPI_ADDR_RUNLOCK(); 4810 return (sctp_ifap); 4811 break; 4812 } 4813 } else if (addr->sa_family == AF_INET6) { 4814 if (SCTP6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)addr)->sin6_addr, 4815 &sctp_ifap->address.sin6.sin6_addr)) { 4816 /* found him. */ 4817 if (holds_lock == 0) 4818 SCTP_IPI_ADDR_RUNLOCK(); 4819 return (sctp_ifap); 4820 break; 4821 } 4822 } 4823 } 4824 if (holds_lock == 0) 4825 SCTP_IPI_ADDR_RUNLOCK(); 4826 return (NULL); 4827 } 4828 4829 static void 4830 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock, 4831 uint32_t rwnd_req) 4832 { 4833 /* User pulled some data, do we need a rwnd update? */ 4834 int r_unlocked = 0; 4835 uint32_t dif, rwnd; 4836 struct socket *so = NULL; 4837 4838 if (stcb == NULL) 4839 return; 4840 4841 atomic_add_int(&stcb->asoc.refcnt, 1); 4842 4843 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | 4844 SCTP_STATE_SHUTDOWN_RECEIVED | 4845 SCTP_STATE_SHUTDOWN_ACK_SENT)) { 4846 /* Pre-check If we are freeing no update */ 4847 goto no_lock; 4848 } 4849 SCTP_INP_INCR_REF(stcb->sctp_ep); 4850 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 4851 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { 4852 goto out; 4853 } 4854 so = stcb->sctp_socket; 4855 if (so == NULL) { 4856 goto out; 4857 } 4858 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far); 4859 /* Have you have freed enough to look */ 4860 *freed_so_far = 0; 4861 /* Yep, its worth a look and the lock overhead */ 4862 4863 /* Figure out what the rwnd would be */ 4864 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc); 4865 if (rwnd >= stcb->asoc.my_last_reported_rwnd) { 4866 dif = rwnd - stcb->asoc.my_last_reported_rwnd; 4867 } else { 4868 dif = 0; 4869 } 4870 if (dif >= rwnd_req) { 4871 if (hold_rlock) { 4872 SCTP_INP_READ_UNLOCK(stcb->sctp_ep); 4873 r_unlocked = 1; 4874 } 4875 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 4876 /* 4877 * One last check before we allow the guy possibly 4878 * to get in. There is a race, where the guy has not 4879 * reached the gate. In that case 4880 */ 4881 goto out; 4882 } 4883 SCTP_TCB_LOCK(stcb); 4884 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 4885 /* No reports here */ 4886 SCTP_TCB_UNLOCK(stcb); 4887 goto out; 4888 } 4889 SCTP_STAT_INCR(sctps_wu_sacks_sent); 4890 sctp_send_sack(stcb); 4891 sctp_chunk_output(stcb->sctp_ep, stcb, 4892 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED); 4893 /* make sure no timer is running */ 4894 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6); 4895 SCTP_TCB_UNLOCK(stcb); 4896 } else { 4897 /* Update how much we have pending */ 4898 stcb->freed_by_sorcv_sincelast = dif; 4899 } 4900 out: 4901 if (so && r_unlocked && hold_rlock) { 4902 SCTP_INP_READ_LOCK(stcb->sctp_ep); 4903 } 4904 SCTP_INP_DECR_REF(stcb->sctp_ep); 4905 no_lock: 4906 atomic_add_int(&stcb->asoc.refcnt, -1); 4907 return; 4908 } 4909 4910 int 4911 sctp_sorecvmsg(struct socket *so, 4912 struct uio *uio, 4913 struct mbuf **mp, 4914 struct sockaddr *from, 4915 int fromlen, 4916 int *msg_flags, 4917 struct sctp_sndrcvinfo *sinfo, 4918 int filling_sinfo) 4919 { 4920 /* 4921 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO. 4922 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy 4923 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ?? 4924 * On the way out we may send out any combination of: 4925 * MSG_NOTIFICATION MSG_EOR 4926 * 4927 */ 4928 struct sctp_inpcb *inp = NULL; 4929 int my_len = 0; 4930 int cp_len = 0, error = 0; 4931 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL; 4932 struct mbuf *m = NULL, *embuf = NULL; 4933 struct sctp_tcb *stcb = NULL; 4934 int wakeup_read_socket = 0; 4935 int freecnt_applied = 0; 4936 int out_flags = 0, in_flags = 0; 4937 int block_allowed = 1; 4938 uint32_t freed_so_far = 0; 4939 uint32_t copied_so_far = 0; 4940 int in_eeor_mode = 0; 4941 int no_rcv_needed = 0; 4942 uint32_t rwnd_req = 0; 4943 int hold_sblock = 0; 4944 int hold_rlock = 0; 4945 int slen = 0; 4946 uint32_t held_length = 0; 4947 int sockbuf_lock = 0; 4948 4949 if (uio == NULL) { 4950 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 4951 return (EINVAL); 4952 } 4953 if (msg_flags) { 4954 in_flags = *msg_flags; 4955 if (in_flags & MSG_PEEK) 4956 SCTP_STAT_INCR(sctps_read_peeks); 4957 } else { 4958 in_flags = 0; 4959 } 4960 slen = uio->uio_resid; 4961 4962 /* Pull in and set up our int flags */ 4963 if (in_flags & MSG_OOB) { 4964 /* Out of band's NOT supported */ 4965 return (EOPNOTSUPP); 4966 } 4967 if ((in_flags & MSG_PEEK) && (mp != NULL)) { 4968 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 4969 return (EINVAL); 4970 } 4971 if ((in_flags & (MSG_DONTWAIT 4972 | MSG_NBIO 4973 )) || 4974 SCTP_SO_IS_NBIO(so)) { 4975 block_allowed = 0; 4976 } 4977 /* setup the endpoint */ 4978 inp = (struct sctp_inpcb *)so->so_pcb; 4979 if (inp == NULL) { 4980 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT); 4981 return (EFAULT); 4982 } 4983 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT); 4984 /* Must be at least a MTU's worth */ 4985 if (rwnd_req < SCTP_MIN_RWND) 4986 rwnd_req = SCTP_MIN_RWND; 4987 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); 4988 if (sctp_logging_level & SCTP_RECV_RWND_LOGGING_ENABLE) { 4989 sctp_misc_ints(SCTP_SORECV_ENTER, 4990 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid); 4991 } 4992 if (sctp_logging_level & SCTP_RECV_RWND_LOGGING_ENABLE) { 4993 sctp_misc_ints(SCTP_SORECV_ENTERPL, 4994 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid); 4995 } 4996 error = sblock(&so->so_rcv, (block_allowed ? M_WAITOK : 0)); 4997 sockbuf_lock = 1; 4998 if (error) { 4999 goto release_unlocked; 5000 } 5001 restart: 5002 5003 5004 restart_nosblocks: 5005 if (hold_sblock == 0) { 5006 SOCKBUF_LOCK(&so->so_rcv); 5007 hold_sblock = 1; 5008 } 5009 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 5010 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { 5011 goto out; 5012 } 5013 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) { 5014 if (so->so_error) { 5015 error = so->so_error; 5016 if ((in_flags & MSG_PEEK) == 0) 5017 so->so_error = 0; 5018 goto out; 5019 } else { 5020 if (so->so_rcv.sb_cc == 0) { 5021 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); 5022 /* indicate EOF */ 5023 error = 0; 5024 goto out; 5025 } 5026 } 5027 } 5028 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) { 5029 /* we need to wait for data */ 5030 if ((so->so_rcv.sb_cc == 0) && 5031 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 5032 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { 5033 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 5034 /* 5035 * For active open side clear flags for 5036 * re-use passive open is blocked by 5037 * connect. 5038 */ 5039 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { 5040 /* 5041 * You were aborted, passive side 5042 * always hits here 5043 */ 5044 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 5045 error = ECONNRESET; 5046 /* 5047 * You get this once if you are 5048 * active open side 5049 */ 5050 if (!(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 5051 /* 5052 * Remove flag if on the 5053 * active open side 5054 */ 5055 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAS_ABORTED; 5056 } 5057 } 5058 so->so_state &= ~(SS_ISCONNECTING | 5059 SS_ISDISCONNECTING | 5060 SS_ISCONFIRMING | 5061 SS_ISCONNECTED); 5062 if (error == 0) { 5063 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { 5064 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); 5065 error = ENOTCONN; 5066 } else { 5067 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAS_CONNECTED; 5068 } 5069 } 5070 goto out; 5071 } 5072 } 5073 error = sbwait(&so->so_rcv); 5074 if (error) { 5075 goto out; 5076 } 5077 held_length = 0; 5078 goto restart_nosblocks; 5079 } else if (so->so_rcv.sb_cc == 0) { 5080 if (so->so_error) { 5081 error = so->so_error; 5082 if ((in_flags & MSG_PEEK) == 0) 5083 so->so_error = 0; 5084 } else { 5085 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 5086 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 5087 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 5088 /* 5089 * For active open side clear flags 5090 * for re-use passive open is 5091 * blocked by connect. 5092 */ 5093 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { 5094 /* 5095 * You were aborted, passive 5096 * side always hits here 5097 */ 5098 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 5099 error = ECONNRESET; 5100 /* 5101 * You get this once if you 5102 * are active open side 5103 */ 5104 if (!(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 5105 /* 5106 * Remove flag if on 5107 * the active open 5108 * side 5109 */ 5110 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAS_ABORTED; 5111 } 5112 } 5113 so->so_state &= ~(SS_ISCONNECTING | 5114 SS_ISDISCONNECTING | 5115 SS_ISCONFIRMING | 5116 SS_ISCONNECTED); 5117 if (error == 0) { 5118 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { 5119 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); 5120 error = ENOTCONN; 5121 } else { 5122 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAS_CONNECTED; 5123 } 5124 } 5125 goto out; 5126 } 5127 } 5128 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK); 5129 error = EWOULDBLOCK; 5130 } 5131 goto out; 5132 } 5133 if (hold_sblock == 1) { 5134 SOCKBUF_UNLOCK(&so->so_rcv); 5135 hold_sblock = 0; 5136 } 5137 /* we possibly have data we can read */ 5138 /* sa_ignore FREED_MEMORY */ 5139 control = TAILQ_FIRST(&inp->read_queue); 5140 if (control == NULL) { 5141 /* 5142 * This could be happening since the appender did the 5143 * increment but as not yet did the tailq insert onto the 5144 * read_queue 5145 */ 5146 if (hold_rlock == 0) { 5147 SCTP_INP_READ_LOCK(inp); 5148 hold_rlock = 1; 5149 } 5150 control = TAILQ_FIRST(&inp->read_queue); 5151 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) { 5152 #ifdef INVARIANTS 5153 panic("Huh, its non zero and nothing on control?"); 5154 #endif 5155 so->so_rcv.sb_cc = 0; 5156 } 5157 SCTP_INP_READ_UNLOCK(inp); 5158 hold_rlock = 0; 5159 goto restart; 5160 } 5161 if ((control->length == 0) && 5162 (control->do_not_ref_stcb)) { 5163 /* 5164 * Clean up code for freeing assoc that left behind a 5165 * pdapi.. maybe a peer in EEOR that just closed after 5166 * sending and never indicated a EOR. 5167 */ 5168 if (hold_rlock == 0) { 5169 hold_rlock = 1; 5170 SCTP_INP_READ_LOCK(inp); 5171 } 5172 control->held_length = 0; 5173 if (control->data) { 5174 /* Hmm there is data here .. fix */ 5175 struct mbuf *m_tmp; 5176 int cnt = 0; 5177 5178 m_tmp = control->data; 5179 while (m_tmp) { 5180 cnt += SCTP_BUF_LEN(m_tmp); 5181 if (SCTP_BUF_NEXT(m_tmp) == NULL) { 5182 control->tail_mbuf = m_tmp; 5183 control->end_added = 1; 5184 } 5185 m_tmp = SCTP_BUF_NEXT(m_tmp); 5186 } 5187 control->length = cnt; 5188 } else { 5189 /* remove it */ 5190 TAILQ_REMOVE(&inp->read_queue, control, next); 5191 /* Add back any hiddend data */ 5192 sctp_free_remote_addr(control->whoFrom); 5193 sctp_free_a_readq(stcb, control); 5194 } 5195 if (hold_rlock) { 5196 hold_rlock = 0; 5197 SCTP_INP_READ_UNLOCK(inp); 5198 } 5199 goto restart; 5200 } 5201 if (control->length == 0) { 5202 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) && 5203 (filling_sinfo)) { 5204 /* find a more suitable one then this */ 5205 ctl = TAILQ_NEXT(control, next); 5206 while (ctl) { 5207 if ((ctl->stcb != control->stcb) && (ctl->length) && 5208 (ctl->some_taken || 5209 (ctl->spec_flags & M_NOTIFICATION) || 5210 ((ctl->do_not_ref_stcb == 0) && 5211 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0))) 5212 ) { 5213 /*- 5214 * If we have a different TCB next, and there is data 5215 * present. If we have already taken some (pdapi), OR we can 5216 * ref the tcb and no delivery as started on this stream, we 5217 * take it. Note we allow a notification on a different 5218 * assoc to be delivered.. 5219 */ 5220 control = ctl; 5221 goto found_one; 5222 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) && 5223 (ctl->length) && 5224 ((ctl->some_taken) || 5225 ((ctl->do_not_ref_stcb == 0) && 5226 ((ctl->spec_flags & M_NOTIFICATION) == 0) && 5227 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0))) 5228 ) { 5229 /*- 5230 * If we have the same tcb, and there is data present, and we 5231 * have the strm interleave feature present. Then if we have 5232 * taken some (pdapi) or we can refer to tht tcb AND we have 5233 * not started a delivery for this stream, we can take it. 5234 * Note we do NOT allow a notificaiton on the same assoc to 5235 * be delivered. 5236 */ 5237 control = ctl; 5238 goto found_one; 5239 } 5240 ctl = TAILQ_NEXT(ctl, next); 5241 } 5242 } 5243 /* 5244 * if we reach here, not suitable replacement is available 5245 * <or> fragment interleave is NOT on. So stuff the sb_cc 5246 * into the our held count, and its time to sleep again. 5247 */ 5248 held_length = so->so_rcv.sb_cc; 5249 control->held_length = so->so_rcv.sb_cc; 5250 goto restart; 5251 } 5252 /* Clear the held length since there is something to read */ 5253 control->held_length = 0; 5254 if (hold_rlock) { 5255 SCTP_INP_READ_UNLOCK(inp); 5256 hold_rlock = 0; 5257 } 5258 found_one: 5259 /* 5260 * If we reach here, control has a some data for us to read off. 5261 * Note that stcb COULD be NULL. 5262 */ 5263 control->some_taken++; 5264 if (hold_sblock) { 5265 SOCKBUF_UNLOCK(&so->so_rcv); 5266 hold_sblock = 0; 5267 } 5268 stcb = control->stcb; 5269 if (stcb) { 5270 if ((control->do_not_ref_stcb == 0) && 5271 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) { 5272 if (freecnt_applied == 0) 5273 stcb = NULL; 5274 } else if (control->do_not_ref_stcb == 0) { 5275 /* you can't free it on me please */ 5276 /* 5277 * The lock on the socket buffer protects us so the 5278 * free code will stop. But since we used the 5279 * socketbuf lock and the sender uses the tcb_lock 5280 * to increment, we need to use the atomic add to 5281 * the refcnt 5282 */ 5283 if (freecnt_applied) { 5284 #ifdef INVARIANTS 5285 panic("refcnt already incremented"); 5286 #else 5287 printf("refcnt already incremented?\n"); 5288 #endif 5289 } else { 5290 atomic_add_int(&stcb->asoc.refcnt, 1); 5291 freecnt_applied = 1; 5292 } 5293 /* 5294 * Setup to remember how much we have not yet told 5295 * the peer our rwnd has opened up. Note we grab the 5296 * value from the tcb from last time. Note too that 5297 * sack sending clears this when a sack is sent, 5298 * which is fine. Once we hit the rwnd_req, we then 5299 * will go to the sctp_user_rcvd() that will not 5300 * lock until it KNOWs it MUST send a WUP-SACK. 5301 */ 5302 freed_so_far = stcb->freed_by_sorcv_sincelast; 5303 stcb->freed_by_sorcv_sincelast = 0; 5304 } 5305 } 5306 if (stcb && 5307 ((control->spec_flags & M_NOTIFICATION) == 0) && 5308 control->do_not_ref_stcb == 0) { 5309 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1; 5310 } 5311 /* First lets get off the sinfo and sockaddr info */ 5312 if ((sinfo) && filling_sinfo) { 5313 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo)); 5314 nxt = TAILQ_NEXT(control, next); 5315 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO)) { 5316 struct sctp_extrcvinfo *s_extra; 5317 5318 s_extra = (struct sctp_extrcvinfo *)sinfo; 5319 if ((nxt) && 5320 (nxt->length)) { 5321 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL; 5322 if (nxt->sinfo_flags & SCTP_UNORDERED) { 5323 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED; 5324 } 5325 if (nxt->spec_flags & M_NOTIFICATION) { 5326 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION; 5327 } 5328 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id; 5329 s_extra->sreinfo_next_length = nxt->length; 5330 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid; 5331 s_extra->sreinfo_next_stream = nxt->sinfo_stream; 5332 if (nxt->tail_mbuf != NULL) { 5333 if (nxt->end_added) { 5334 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE; 5335 } 5336 } 5337 } else { 5338 /* 5339 * we explicitly 0 this, since the memcpy 5340 * got some other things beyond the older 5341 * sinfo_ that is on the control's structure 5342 * :-D 5343 */ 5344 nxt = NULL; 5345 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG; 5346 s_extra->sreinfo_next_aid = 0; 5347 s_extra->sreinfo_next_length = 0; 5348 s_extra->sreinfo_next_ppid = 0; 5349 s_extra->sreinfo_next_stream = 0; 5350 } 5351 } 5352 /* 5353 * update off the real current cum-ack, if we have an stcb. 5354 */ 5355 if ((control->do_not_ref_stcb == 0) && stcb) 5356 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn; 5357 /* 5358 * mask off the high bits, we keep the actual chunk bits in 5359 * there. 5360 */ 5361 sinfo->sinfo_flags &= 0x00ff; 5362 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) { 5363 sinfo->sinfo_flags |= SCTP_UNORDERED; 5364 } 5365 } 5366 #ifdef SCTP_ASOCLOG_OF_TSNS 5367 { 5368 int index, newindex; 5369 struct sctp_pcbtsn_rlog *entry; 5370 5371 do { 5372 index = inp->readlog_index; 5373 newindex = index + 1; 5374 if (newindex >= SCTP_READ_LOG_SIZE) { 5375 newindex = 0; 5376 } 5377 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0); 5378 entry = &inp->readlog[index]; 5379 entry->vtag = control->sinfo_assoc_id; 5380 entry->strm = control->sinfo_stream; 5381 entry->seq = control->sinfo_ssn; 5382 entry->sz = control->length; 5383 entry->flgs = control->sinfo_flags; 5384 } 5385 #endif 5386 if (fromlen && from) { 5387 struct sockaddr *to; 5388 5389 #ifdef INET 5390 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sin.sin_len); 5391 memcpy(from, &control->whoFrom->ro._l_addr, cp_len); 5392 ((struct sockaddr_in *)from)->sin_port = control->port_from; 5393 #else 5394 /* No AF_INET use AF_INET6 */ 5395 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sin6.sin6_len); 5396 memcpy(from, &control->whoFrom->ro._l_addr, cp_len); 5397 ((struct sockaddr_in6 *)from)->sin6_port = control->port_from; 5398 #endif 5399 5400 to = from; 5401 #if defined(INET) && defined(INET6) 5402 if ((inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) && 5403 (to->sa_family == AF_INET) && 5404 ((size_t)fromlen >= sizeof(struct sockaddr_in6))) { 5405 struct sockaddr_in *sin; 5406 struct sockaddr_in6 sin6; 5407 5408 sin = (struct sockaddr_in *)to; 5409 bzero(&sin6, sizeof(sin6)); 5410 sin6.sin6_family = AF_INET6; 5411 sin6.sin6_len = sizeof(struct sockaddr_in6); 5412 sin6.sin6_addr.s6_addr16[2] = 0xffff; 5413 bcopy(&sin->sin_addr, 5414 &sin6.sin6_addr.s6_addr16[3], 5415 sizeof(sin6.sin6_addr.s6_addr16[3])); 5416 sin6.sin6_port = sin->sin_port; 5417 memcpy(from, (caddr_t)&sin6, sizeof(sin6)); 5418 } 5419 #endif 5420 #if defined(INET6) 5421 { 5422 struct sockaddr_in6 lsa6, *to6; 5423 5424 to6 = (struct sockaddr_in6 *)to; 5425 sctp_recover_scope_mac(to6, (&lsa6)); 5426 } 5427 #endif 5428 } 5429 /* now copy out what data we can */ 5430 if (mp == NULL) { 5431 /* copy out each mbuf in the chain up to length */ 5432 get_more_data: 5433 m = control->data; 5434 while (m) { 5435 /* Move out all we can */ 5436 cp_len = (int)uio->uio_resid; 5437 my_len = (int)SCTP_BUF_LEN(m); 5438 if (cp_len > my_len) { 5439 /* not enough in this buf */ 5440 cp_len = my_len; 5441 } 5442 if (hold_rlock) { 5443 SCTP_INP_READ_UNLOCK(inp); 5444 hold_rlock = 0; 5445 } 5446 if (cp_len > 0) 5447 error = uiomove(mtod(m, char *), cp_len, uio); 5448 /* re-read */ 5449 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 5450 goto release; 5451 } 5452 if ((control->do_not_ref_stcb == 0) && stcb && 5453 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5454 no_rcv_needed = 1; 5455 } 5456 if (error) { 5457 /* error we are out of here */ 5458 goto release; 5459 } 5460 if ((SCTP_BUF_NEXT(m) == NULL) && 5461 (cp_len >= SCTP_BUF_LEN(m)) && 5462 ((control->end_added == 0) || 5463 (control->end_added && 5464 (TAILQ_NEXT(control, next) == NULL))) 5465 ) { 5466 SCTP_INP_READ_LOCK(inp); 5467 hold_rlock = 1; 5468 } 5469 if (cp_len == SCTP_BUF_LEN(m)) { 5470 if ((SCTP_BUF_NEXT(m) == NULL) && 5471 (control->end_added)) { 5472 out_flags |= MSG_EOR; 5473 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 5474 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5475 } 5476 if (control->spec_flags & M_NOTIFICATION) { 5477 out_flags |= MSG_NOTIFICATION; 5478 } 5479 /* we ate up the mbuf */ 5480 if (in_flags & MSG_PEEK) { 5481 /* just looking */ 5482 m = SCTP_BUF_NEXT(m); 5483 copied_so_far += cp_len; 5484 } else { 5485 /* dispose of the mbuf */ 5486 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 5487 sctp_sblog(&so->so_rcv, 5488 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 5489 } 5490 sctp_sbfree(control, stcb, &so->so_rcv, m); 5491 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 5492 sctp_sblog(&so->so_rcv, 5493 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 5494 } 5495 embuf = m; 5496 copied_so_far += cp_len; 5497 freed_so_far += cp_len; 5498 freed_so_far += MSIZE; 5499 atomic_subtract_int(&control->length, cp_len); 5500 control->data = sctp_m_free(m); 5501 m = control->data; 5502 /* 5503 * been through it all, must hold sb 5504 * lock ok to null tail 5505 */ 5506 if (control->data == NULL) { 5507 #ifdef INVARIANTS 5508 if ((control->end_added == 0) || 5509 (TAILQ_NEXT(control, next) == NULL)) { 5510 /* 5511 * If the end is not 5512 * added, OR the 5513 * next is NOT null 5514 * we MUST have the 5515 * lock. 5516 */ 5517 if (mtx_owned(&inp->inp_rdata_mtx) == 0) { 5518 panic("Hmm we don't own the lock?"); 5519 } 5520 } 5521 #endif 5522 control->tail_mbuf = NULL; 5523 #ifdef INVARIANTS 5524 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) { 5525 panic("end_added, nothing left and no MSG_EOR"); 5526 } 5527 #endif 5528 } 5529 } 5530 } else { 5531 /* Do we need to trim the mbuf? */ 5532 if (control->spec_flags & M_NOTIFICATION) { 5533 out_flags |= MSG_NOTIFICATION; 5534 } 5535 if ((in_flags & MSG_PEEK) == 0) { 5536 SCTP_BUF_RESV_UF(m, cp_len); 5537 SCTP_BUF_LEN(m) -= cp_len; 5538 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 5539 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len); 5540 } 5541 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len); 5542 if ((control->do_not_ref_stcb == 0) && 5543 stcb) { 5544 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len); 5545 } 5546 copied_so_far += cp_len; 5547 embuf = m; 5548 freed_so_far += cp_len; 5549 freed_so_far += MSIZE; 5550 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 5551 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, 5552 SCTP_LOG_SBRESULT, 0); 5553 } 5554 atomic_subtract_int(&control->length, cp_len); 5555 } else { 5556 copied_so_far += cp_len; 5557 } 5558 } 5559 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) { 5560 break; 5561 } 5562 if (((stcb) && (in_flags & MSG_PEEK) == 0) && 5563 (control->do_not_ref_stcb == 0) && 5564 (freed_so_far >= rwnd_req)) { 5565 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5566 } 5567 } /* end while(m) */ 5568 /* 5569 * At this point we have looked at it all and we either have 5570 * a MSG_EOR/or read all the user wants... <OR> 5571 * control->length == 0. 5572 */ 5573 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) { 5574 /* we are done with this control */ 5575 if (control->length == 0) { 5576 if (control->data) { 5577 #ifdef INVARIANTS 5578 panic("control->data not null at read eor?"); 5579 #else 5580 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n"); 5581 sctp_m_freem(control->data); 5582 control->data = NULL; 5583 #endif 5584 } 5585 done_with_control: 5586 if (TAILQ_NEXT(control, next) == NULL) { 5587 /* 5588 * If we don't have a next we need a 5589 * lock, if there is a next 5590 * interrupt is filling ahead of us 5591 * and we don't need a lock to 5592 * remove this guy (which is the 5593 * head of the queue). 5594 */ 5595 if (hold_rlock == 0) { 5596 SCTP_INP_READ_LOCK(inp); 5597 hold_rlock = 1; 5598 } 5599 } 5600 TAILQ_REMOVE(&inp->read_queue, control, next); 5601 /* Add back any hiddend data */ 5602 if (control->held_length) { 5603 held_length = 0; 5604 control->held_length = 0; 5605 wakeup_read_socket = 1; 5606 } 5607 if (control->aux_data) { 5608 sctp_m_free(control->aux_data); 5609 control->aux_data = NULL; 5610 } 5611 no_rcv_needed = control->do_not_ref_stcb; 5612 sctp_free_remote_addr(control->whoFrom); 5613 control->data = NULL; 5614 sctp_free_a_readq(stcb, control); 5615 control = NULL; 5616 if ((freed_so_far >= rwnd_req) && 5617 (no_rcv_needed == 0)) 5618 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5619 5620 } else { 5621 /* 5622 * The user did not read all of this 5623 * message, turn off the returned MSG_EOR 5624 * since we are leaving more behind on the 5625 * control to read. 5626 */ 5627 #ifdef INVARIANTS 5628 if (control->end_added && 5629 (control->data == NULL) && 5630 (control->tail_mbuf == NULL)) { 5631 panic("Gak, control->length is corrupt?"); 5632 } 5633 #endif 5634 no_rcv_needed = control->do_not_ref_stcb; 5635 out_flags &= ~MSG_EOR; 5636 } 5637 } 5638 if (out_flags & MSG_EOR) { 5639 goto release; 5640 } 5641 if ((uio->uio_resid == 0) || 5642 ((in_eeor_mode) && (copied_so_far >= max(so->so_rcv.sb_lowat, 1))) 5643 ) { 5644 goto release; 5645 } 5646 /* 5647 * If I hit here the receiver wants more and this message is 5648 * NOT done (pd-api). So two questions. Can we block? if not 5649 * we are done. Did the user NOT set MSG_WAITALL? 5650 */ 5651 if (block_allowed == 0) { 5652 goto release; 5653 } 5654 /* 5655 * We need to wait for more data a few things: - We don't 5656 * sbunlock() so we don't get someone else reading. - We 5657 * must be sure to account for the case where what is added 5658 * is NOT to our control when we wakeup. 5659 */ 5660 5661 /* 5662 * Do we need to tell the transport a rwnd update might be 5663 * needed before we go to sleep? 5664 */ 5665 if (((stcb) && (in_flags & MSG_PEEK) == 0) && 5666 ((freed_so_far >= rwnd_req) && 5667 (control->do_not_ref_stcb == 0) && 5668 (no_rcv_needed == 0))) { 5669 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5670 } 5671 wait_some_more: 5672 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) { 5673 goto release; 5674 } 5675 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) 5676 goto release; 5677 5678 if (hold_rlock == 1) { 5679 SCTP_INP_READ_UNLOCK(inp); 5680 hold_rlock = 0; 5681 } 5682 if (hold_sblock == 0) { 5683 SOCKBUF_LOCK(&so->so_rcv); 5684 hold_sblock = 1; 5685 } 5686 if ((copied_so_far) && (control->length == 0) && 5687 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) 5688 ) { 5689 goto release; 5690 } 5691 if (so->so_rcv.sb_cc <= control->held_length) { 5692 error = sbwait(&so->so_rcv); 5693 if (error) { 5694 goto release; 5695 } 5696 control->held_length = 0; 5697 } 5698 if (hold_sblock) { 5699 SOCKBUF_UNLOCK(&so->so_rcv); 5700 hold_sblock = 0; 5701 } 5702 if (control->length == 0) { 5703 /* still nothing here */ 5704 if (control->end_added == 1) { 5705 /* he aborted, or is done i.e.did a shutdown */ 5706 out_flags |= MSG_EOR; 5707 if (control->pdapi_aborted) { 5708 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 5709 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5710 5711 out_flags |= MSG_TRUNC; 5712 } else { 5713 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 5714 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5715 } 5716 goto done_with_control; 5717 } 5718 if (so->so_rcv.sb_cc > held_length) { 5719 control->held_length = so->so_rcv.sb_cc; 5720 held_length = 0; 5721 } 5722 goto wait_some_more; 5723 } else if (control->data == NULL) { 5724 /* 5725 * we must re-sync since data is probably being 5726 * added 5727 */ 5728 SCTP_INP_READ_LOCK(inp); 5729 if ((control->length > 0) && (control->data == NULL)) { 5730 /* 5731 * big trouble.. we have the lock and its 5732 * corrupt? 5733 */ 5734 #ifdef INVARIANTS 5735 panic("Impossible data==NULL length !=0"); 5736 #endif 5737 out_flags |= MSG_EOR; 5738 out_flags |= MSG_TRUNC; 5739 control->length = 0; 5740 SCTP_INP_READ_UNLOCK(inp); 5741 goto done_with_control; 5742 } 5743 SCTP_INP_READ_UNLOCK(inp); 5744 /* We will fall around to get more data */ 5745 } 5746 goto get_more_data; 5747 } else { 5748 /*- 5749 * Give caller back the mbuf chain, 5750 * store in uio_resid the length 5751 */ 5752 wakeup_read_socket = 0; 5753 if ((control->end_added == 0) || 5754 (TAILQ_NEXT(control, next) == NULL)) { 5755 /* Need to get rlock */ 5756 if (hold_rlock == 0) { 5757 SCTP_INP_READ_LOCK(inp); 5758 hold_rlock = 1; 5759 } 5760 } 5761 if (control->end_added) { 5762 out_flags |= MSG_EOR; 5763 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 5764 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5765 } 5766 if (control->spec_flags & M_NOTIFICATION) { 5767 out_flags |= MSG_NOTIFICATION; 5768 } 5769 uio->uio_resid = control->length; 5770 *mp = control->data; 5771 m = control->data; 5772 while (m) { 5773 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 5774 sctp_sblog(&so->so_rcv, 5775 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 5776 } 5777 sctp_sbfree(control, stcb, &so->so_rcv, m); 5778 freed_so_far += SCTP_BUF_LEN(m); 5779 freed_so_far += MSIZE; 5780 if (sctp_logging_level & SCTP_SB_LOGGING_ENABLE) { 5781 sctp_sblog(&so->so_rcv, 5782 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 5783 } 5784 m = SCTP_BUF_NEXT(m); 5785 } 5786 control->data = control->tail_mbuf = NULL; 5787 control->length = 0; 5788 if (out_flags & MSG_EOR) { 5789 /* Done with this control */ 5790 goto done_with_control; 5791 } 5792 } 5793 release: 5794 if (hold_rlock == 1) { 5795 SCTP_INP_READ_UNLOCK(inp); 5796 hold_rlock = 0; 5797 } 5798 if (hold_sblock == 1) { 5799 SOCKBUF_UNLOCK(&so->so_rcv); 5800 hold_sblock = 0; 5801 } 5802 sbunlock(&so->so_rcv); 5803 sockbuf_lock = 0; 5804 5805 release_unlocked: 5806 if (hold_sblock) { 5807 SOCKBUF_UNLOCK(&so->so_rcv); 5808 hold_sblock = 0; 5809 } 5810 if ((stcb) && (in_flags & MSG_PEEK) == 0) { 5811 if ((freed_so_far >= rwnd_req) && 5812 (control && (control->do_not_ref_stcb == 0)) && 5813 (no_rcv_needed == 0)) 5814 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5815 } 5816 if (msg_flags) 5817 *msg_flags = out_flags; 5818 out: 5819 if (((out_flags & MSG_EOR) == 0) && 5820 ((in_flags & MSG_PEEK) == 0) && 5821 (sinfo) && 5822 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO))) { 5823 struct sctp_extrcvinfo *s_extra; 5824 5825 s_extra = (struct sctp_extrcvinfo *)sinfo; 5826 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG; 5827 } 5828 if (hold_rlock == 1) { 5829 SCTP_INP_READ_UNLOCK(inp); 5830 hold_rlock = 0; 5831 } 5832 if (hold_sblock) { 5833 SOCKBUF_UNLOCK(&so->so_rcv); 5834 hold_sblock = 0; 5835 } 5836 if (sockbuf_lock) { 5837 sbunlock(&so->so_rcv); 5838 } 5839 if (freecnt_applied) { 5840 /* 5841 * The lock on the socket buffer protects us so the free 5842 * code will stop. But since we used the socketbuf lock and 5843 * the sender uses the tcb_lock to increment, we need to use 5844 * the atomic add to the refcnt. 5845 */ 5846 if (stcb == NULL) { 5847 panic("stcb for refcnt has gone NULL?"); 5848 } 5849 atomic_add_int(&stcb->asoc.refcnt, -1); 5850 freecnt_applied = 0; 5851 /* Save the value back for next time */ 5852 stcb->freed_by_sorcv_sincelast = freed_so_far; 5853 } 5854 if (sctp_logging_level & SCTP_RECV_RWND_LOGGING_ENABLE) { 5855 if (stcb) { 5856 sctp_misc_ints(SCTP_SORECV_DONE, 5857 freed_so_far, 5858 ((uio) ? (slen - uio->uio_resid) : slen), 5859 stcb->asoc.my_rwnd, 5860 so->so_rcv.sb_cc); 5861 } else { 5862 sctp_misc_ints(SCTP_SORECV_DONE, 5863 freed_so_far, 5864 ((uio) ? (slen - uio->uio_resid) : slen), 5865 0, 5866 so->so_rcv.sb_cc); 5867 } 5868 } 5869 if (wakeup_read_socket) { 5870 sctp_sorwakeup(inp, so); 5871 } 5872 return (error); 5873 } 5874 5875 5876 #ifdef SCTP_MBUF_LOGGING 5877 struct mbuf * 5878 sctp_m_free(struct mbuf *m) 5879 { 5880 if (sctp_logging_level & SCTP_MBUF_LOGGING_ENABLE) { 5881 if (SCTP_BUF_IS_EXTENDED(m)) { 5882 sctp_log_mb(m, SCTP_MBUF_IFREE); 5883 } 5884 } 5885 return (m_free(m)); 5886 } 5887 5888 void 5889 sctp_m_freem(struct mbuf *mb) 5890 { 5891 while (mb != NULL) 5892 mb = sctp_m_free(mb); 5893 } 5894 5895 #endif 5896 5897 int 5898 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id) 5899 { 5900 /* 5901 * Given a local address. For all associations that holds the 5902 * address, request a peer-set-primary. 5903 */ 5904 struct sctp_ifa *ifa; 5905 struct sctp_laddr *wi; 5906 5907 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0); 5908 if (ifa == NULL) { 5909 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL); 5910 return (EADDRNOTAVAIL); 5911 } 5912 /* 5913 * Now that we have the ifa we must awaken the iterator with this 5914 * message. 5915 */ 5916 wi = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_laddr, struct sctp_laddr); 5917 if (wi == NULL) { 5918 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 5919 return (ENOMEM); 5920 } 5921 /* Now incr the count and int wi structure */ 5922 SCTP_INCR_LADDR_COUNT(); 5923 bzero(wi, sizeof(*wi)); 5924 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time); 5925 wi->ifa = ifa; 5926 wi->action = SCTP_SET_PRIM_ADDR; 5927 atomic_add_int(&ifa->refcount, 1); 5928 5929 /* Now add it to the work queue */ 5930 SCTP_IPI_ITERATOR_WQ_LOCK(); 5931 /* 5932 * Should this really be a tailq? As it is we will process the 5933 * newest first :-0 5934 */ 5935 LIST_INSERT_HEAD(&sctppcbinfo.addr_wq, wi, sctp_nxt_addr); 5936 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, 5937 (struct sctp_inpcb *)NULL, 5938 (struct sctp_tcb *)NULL, 5939 (struct sctp_nets *)NULL); 5940 SCTP_IPI_ITERATOR_WQ_UNLOCK(); 5941 return (0); 5942 } 5943 5944 5945 5946 5947 int 5948 sctp_soreceive(struct socket *so, 5949 struct sockaddr **psa, 5950 struct uio *uio, 5951 struct mbuf **mp0, 5952 struct mbuf **controlp, 5953 int *flagsp) 5954 { 5955 int error, fromlen; 5956 uint8_t sockbuf[256]; 5957 struct sockaddr *from; 5958 struct sctp_extrcvinfo sinfo; 5959 int filling_sinfo = 1; 5960 struct sctp_inpcb *inp; 5961 5962 inp = (struct sctp_inpcb *)so->so_pcb; 5963 /* pickup the assoc we are reading from */ 5964 if (inp == NULL) { 5965 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 5966 return (EINVAL); 5967 } 5968 if ((sctp_is_feature_off(inp, 5969 SCTP_PCB_FLAGS_RECVDATAIOEVNT)) || 5970 (controlp == NULL)) { 5971 /* user does not want the sndrcv ctl */ 5972 filling_sinfo = 0; 5973 } 5974 if (psa) { 5975 from = (struct sockaddr *)sockbuf; 5976 fromlen = sizeof(sockbuf); 5977 from->sa_len = 0; 5978 } else { 5979 from = NULL; 5980 fromlen = 0; 5981 } 5982 5983 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp, 5984 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo); 5985 if ((controlp) && (filling_sinfo)) { 5986 /* copy back the sinfo in a CMSG format */ 5987 if (filling_sinfo) 5988 *controlp = sctp_build_ctl_nchunk(inp, 5989 (struct sctp_sndrcvinfo *)&sinfo); 5990 else 5991 *controlp = NULL; 5992 } 5993 if (psa) { 5994 /* copy back the address info */ 5995 if (from && from->sa_len) { 5996 *psa = sodupsockaddr(from, M_NOWAIT); 5997 } else { 5998 *psa = NULL; 5999 } 6000 } 6001 return (error); 6002 } 6003 6004 6005 int 6006 sctp_l_soreceive(struct socket *so, 6007 struct sockaddr **name, 6008 struct uio *uio, 6009 char **controlp, 6010 int *controllen, 6011 int *flag) 6012 { 6013 int error, fromlen; 6014 uint8_t sockbuf[256]; 6015 struct sockaddr *from; 6016 struct sctp_extrcvinfo sinfo; 6017 int filling_sinfo = 1; 6018 struct sctp_inpcb *inp; 6019 6020 inp = (struct sctp_inpcb *)so->so_pcb; 6021 /* pickup the assoc we are reading from */ 6022 if (inp == NULL) { 6023 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6024 return (EINVAL); 6025 } 6026 if ((sctp_is_feature_off(inp, 6027 SCTP_PCB_FLAGS_RECVDATAIOEVNT)) || 6028 (controlp == NULL)) { 6029 /* user does not want the sndrcv ctl */ 6030 filling_sinfo = 0; 6031 } 6032 if (name) { 6033 from = (struct sockaddr *)sockbuf; 6034 fromlen = sizeof(sockbuf); 6035 from->sa_len = 0; 6036 } else { 6037 from = NULL; 6038 fromlen = 0; 6039 } 6040 6041 error = sctp_sorecvmsg(so, uio, 6042 (struct mbuf **)NULL, 6043 from, fromlen, flag, 6044 (struct sctp_sndrcvinfo *)&sinfo, 6045 filling_sinfo); 6046 if ((controlp) && (filling_sinfo)) { 6047 /* 6048 * copy back the sinfo in a CMSG format note that the caller 6049 * has reponsibility for freeing the memory. 6050 */ 6051 if (filling_sinfo) 6052 *controlp = sctp_build_ctl_cchunk(inp, 6053 controllen, 6054 (struct sctp_sndrcvinfo *)&sinfo); 6055 } 6056 if (name) { 6057 /* copy back the address info */ 6058 if (from && from->sa_len) { 6059 *name = sodupsockaddr(from, M_WAIT); 6060 } else { 6061 *name = NULL; 6062 } 6063 } 6064 return (error); 6065 } 6066 6067 6068 6069 6070 6071 6072 6073 int 6074 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, 6075 int totaddr, int *error) 6076 { 6077 int added = 0; 6078 int i; 6079 struct sctp_inpcb *inp; 6080 struct sockaddr *sa; 6081 size_t incr = 0; 6082 6083 sa = addr; 6084 inp = stcb->sctp_ep; 6085 *error = 0; 6086 for (i = 0; i < totaddr; i++) { 6087 if (sa->sa_family == AF_INET) { 6088 incr = sizeof(struct sockaddr_in); 6089 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { 6090 /* assoc gone no un-lock */ 6091 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 6092 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7); 6093 *error = ENOBUFS; 6094 goto out_now; 6095 } 6096 added++; 6097 } else if (sa->sa_family == AF_INET6) { 6098 incr = sizeof(struct sockaddr_in6); 6099 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { 6100 /* assoc gone no un-lock */ 6101 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 6102 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8); 6103 *error = ENOBUFS; 6104 goto out_now; 6105 } 6106 added++; 6107 } 6108 sa = (struct sockaddr *)((caddr_t)sa + incr); 6109 } 6110 out_now: 6111 return (added); 6112 } 6113 6114 struct sctp_tcb * 6115 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr, 6116 int *totaddr, int *num_v4, int *num_v6, int *error, 6117 int limit, int *bad_addr) 6118 { 6119 struct sockaddr *sa; 6120 struct sctp_tcb *stcb = NULL; 6121 size_t incr, at, i; 6122 6123 at = incr = 0; 6124 sa = addr; 6125 *error = *num_v6 = *num_v4 = 0; 6126 /* account and validate addresses */ 6127 for (i = 0; i < (size_t)*totaddr; i++) { 6128 if (sa->sa_family == AF_INET) { 6129 (*num_v4) += 1; 6130 incr = sizeof(struct sockaddr_in); 6131 if (sa->sa_len != incr) { 6132 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6133 *error = EINVAL; 6134 *bad_addr = 1; 6135 return (NULL); 6136 } 6137 } else if (sa->sa_family == AF_INET6) { 6138 struct sockaddr_in6 *sin6; 6139 6140 sin6 = (struct sockaddr_in6 *)sa; 6141 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6142 /* Must be non-mapped for connectx */ 6143 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6144 *error = EINVAL; 6145 *bad_addr = 1; 6146 return (NULL); 6147 } 6148 (*num_v6) += 1; 6149 incr = sizeof(struct sockaddr_in6); 6150 if (sa->sa_len != incr) { 6151 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6152 *error = EINVAL; 6153 *bad_addr = 1; 6154 return (NULL); 6155 } 6156 } else { 6157 *totaddr = i; 6158 /* we are done */ 6159 break; 6160 } 6161 SCTP_INP_INCR_REF(inp); 6162 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL); 6163 if (stcb != NULL) { 6164 /* Already have or am bring up an association */ 6165 return (stcb); 6166 } else { 6167 SCTP_INP_DECR_REF(inp); 6168 } 6169 if ((at + incr) > (size_t)limit) { 6170 *totaddr = i; 6171 break; 6172 } 6173 sa = (struct sockaddr *)((caddr_t)sa + incr); 6174 } 6175 return ((struct sctp_tcb *)NULL); 6176 } 6177 6178 /* 6179 * sctp_bindx(ADD) for one address. 6180 * assumes all arguments are valid/checked by caller. 6181 */ 6182 void 6183 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp, 6184 struct sockaddr *sa, sctp_assoc_t assoc_id, 6185 uint32_t vrf_id, int *error, void *p) 6186 { 6187 struct sockaddr *addr_touse; 6188 struct sockaddr_in sin; 6189 6190 /* see if we're bound all already! */ 6191 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6192 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6193 *error = EINVAL; 6194 return; 6195 } 6196 addr_touse = sa; 6197 #if defined(INET6) 6198 if (sa->sa_family == AF_INET6) { 6199 struct sockaddr_in6 *sin6; 6200 6201 if (sa->sa_len != sizeof(struct sockaddr_in6)) { 6202 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6203 *error = EINVAL; 6204 return; 6205 } 6206 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 6207 /* can only bind v6 on PF_INET6 sockets */ 6208 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6209 *error = EINVAL; 6210 return; 6211 } 6212 sin6 = (struct sockaddr_in6 *)addr_touse; 6213 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6214 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6215 SCTP_IPV6_V6ONLY(inp)) { 6216 /* can't bind v4-mapped on PF_INET sockets */ 6217 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6218 *error = EINVAL; 6219 return; 6220 } 6221 in6_sin6_2_sin(&sin, sin6); 6222 addr_touse = (struct sockaddr *)&sin; 6223 } 6224 } 6225 #endif 6226 if (sa->sa_family == AF_INET) { 6227 if (sa->sa_len != sizeof(struct sockaddr_in)) { 6228 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6229 *error = EINVAL; 6230 return; 6231 } 6232 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6233 SCTP_IPV6_V6ONLY(inp)) { 6234 /* can't bind v4 on PF_INET sockets */ 6235 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6236 *error = EINVAL; 6237 return; 6238 } 6239 } 6240 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { 6241 if (p == NULL) { 6242 /* Can't get proc for Net/Open BSD */ 6243 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6244 *error = EINVAL; 6245 return; 6246 } 6247 *error = sctp_inpcb_bind(so, addr_touse, NULL, p); 6248 return; 6249 } 6250 /* 6251 * No locks required here since bind and mgmt_ep_sa all do their own 6252 * locking. If we do something for the FIX: below we may need to 6253 * lock in that case. 6254 */ 6255 if (assoc_id == 0) { 6256 /* add the address */ 6257 struct sctp_inpcb *lep; 6258 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse; 6259 6260 /* validate the incoming port */ 6261 if ((lsin->sin_port != 0) && 6262 (lsin->sin_port != inp->sctp_lport)) { 6263 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6264 *error = EINVAL; 6265 return; 6266 } else { 6267 /* user specified 0 port, set it to existing port */ 6268 lsin->sin_port = inp->sctp_lport; 6269 } 6270 6271 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id); 6272 if (lep != NULL) { 6273 /* 6274 * We must decrement the refcount since we have the 6275 * ep already and are binding. No remove going on 6276 * here. 6277 */ 6278 SCTP_INP_DECR_REF(inp); 6279 } 6280 if (lep == inp) { 6281 /* already bound to it.. ok */ 6282 return; 6283 } else if (lep == NULL) { 6284 ((struct sockaddr_in *)addr_touse)->sin_port = 0; 6285 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse, 6286 SCTP_ADD_IP_ADDRESS, 6287 vrf_id, NULL); 6288 } else { 6289 *error = EADDRINUSE; 6290 } 6291 if (*error) 6292 return; 6293 } else { 6294 /* 6295 * FIX: decide whether we allow assoc based bindx 6296 */ 6297 } 6298 } 6299 6300 /* 6301 * sctp_bindx(DELETE) for one address. 6302 * assumes all arguments are valid/checked by caller. 6303 */ 6304 void 6305 sctp_bindx_delete_address(struct socket *so, struct sctp_inpcb *inp, 6306 struct sockaddr *sa, sctp_assoc_t assoc_id, 6307 uint32_t vrf_id, int *error) 6308 { 6309 struct sockaddr *addr_touse; 6310 struct sockaddr_in sin; 6311 6312 /* see if we're bound all already! */ 6313 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6314 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6315 *error = EINVAL; 6316 return; 6317 } 6318 addr_touse = sa; 6319 #if defined(INET6) 6320 if (sa->sa_family == AF_INET6) { 6321 struct sockaddr_in6 *sin6; 6322 6323 if (sa->sa_len != sizeof(struct sockaddr_in6)) { 6324 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6325 *error = EINVAL; 6326 return; 6327 } 6328 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 6329 /* can only bind v6 on PF_INET6 sockets */ 6330 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6331 *error = EINVAL; 6332 return; 6333 } 6334 sin6 = (struct sockaddr_in6 *)addr_touse; 6335 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6336 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6337 SCTP_IPV6_V6ONLY(inp)) { 6338 /* can't bind mapped-v4 on PF_INET sockets */ 6339 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6340 *error = EINVAL; 6341 return; 6342 } 6343 in6_sin6_2_sin(&sin, sin6); 6344 addr_touse = (struct sockaddr *)&sin; 6345 } 6346 } 6347 #endif 6348 if (sa->sa_family == AF_INET) { 6349 if (sa->sa_len != sizeof(struct sockaddr_in)) { 6350 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6351 *error = EINVAL; 6352 return; 6353 } 6354 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6355 SCTP_IPV6_V6ONLY(inp)) { 6356 /* can't bind v4 on PF_INET sockets */ 6357 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6358 *error = EINVAL; 6359 return; 6360 } 6361 } 6362 /* 6363 * No lock required mgmt_ep_sa does its own locking. If the FIX: 6364 * below is ever changed we may need to lock before calling 6365 * association level binding. 6366 */ 6367 if (assoc_id == 0) { 6368 /* delete the address */ 6369 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse, 6370 SCTP_DEL_IP_ADDRESS, 6371 vrf_id, NULL); 6372 } else { 6373 /* 6374 * FIX: decide whether we allow assoc based bindx 6375 */ 6376 } 6377 } 6378 6379 /* 6380 * returns the valid local address count for an assoc, taking into account 6381 * all scoping rules 6382 */ 6383 int 6384 sctp_local_addr_count(struct sctp_tcb *stcb) 6385 { 6386 int loopback_scope, ipv4_local_scope, local_scope, site_scope; 6387 int ipv4_addr_legal, ipv6_addr_legal; 6388 struct sctp_vrf *vrf; 6389 struct sctp_ifn *sctp_ifn; 6390 struct sctp_ifa *sctp_ifa; 6391 int count = 0; 6392 6393 /* Turn on all the appropriate scopes */ 6394 loopback_scope = stcb->asoc.loopback_scope; 6395 ipv4_local_scope = stcb->asoc.ipv4_local_scope; 6396 local_scope = stcb->asoc.local_scope; 6397 site_scope = stcb->asoc.site_scope; 6398 ipv4_addr_legal = ipv6_addr_legal = 0; 6399 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 6400 ipv6_addr_legal = 1; 6401 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) { 6402 ipv4_addr_legal = 1; 6403 } 6404 } else { 6405 ipv4_addr_legal = 1; 6406 } 6407 6408 SCTP_IPI_ADDR_RLOCK(); 6409 vrf = sctp_find_vrf(stcb->asoc.vrf_id); 6410 if (vrf == NULL) { 6411 /* no vrf, no addresses */ 6412 SCTP_IPI_ADDR_RUNLOCK(); 6413 return (0); 6414 } 6415 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6416 /* 6417 * bound all case: go through all ifns on the vrf 6418 */ 6419 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 6420 if ((loopback_scope == 0) && 6421 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 6422 continue; 6423 } 6424 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 6425 if (sctp_is_addr_restricted(stcb, sctp_ifa)) 6426 continue; 6427 6428 if ((sctp_ifa->address.sa.sa_family == AF_INET) && 6429 (ipv4_addr_legal)) { 6430 struct sockaddr_in *sin; 6431 6432 sin = (struct sockaddr_in *)&sctp_ifa->address.sa; 6433 if (sin->sin_addr.s_addr == 0) { 6434 /* skip unspecified addrs */ 6435 continue; 6436 } 6437 if ((ipv4_local_scope == 0) && 6438 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { 6439 continue; 6440 } 6441 /* count this one */ 6442 count++; 6443 } else if ((sctp_ifa->address.sa.sa_family == AF_INET6) && 6444 (ipv6_addr_legal)) { 6445 struct sockaddr_in6 *sin6; 6446 6447 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa; 6448 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 6449 continue; 6450 } 6451 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 6452 if (local_scope == 0) 6453 continue; 6454 if (sin6->sin6_scope_id == 0) { 6455 if (sa6_recoverscope(sin6) != 0) 6456 /* 6457 * bad link 6458 * local 6459 * address 6460 */ 6461 continue; 6462 } 6463 } 6464 if ((site_scope == 0) && 6465 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { 6466 continue; 6467 } 6468 /* count this one */ 6469 count++; 6470 } 6471 } 6472 } 6473 } else { 6474 /* 6475 * subset bound case 6476 */ 6477 struct sctp_laddr *laddr; 6478 6479 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, 6480 sctp_nxt_addr) { 6481 if (sctp_is_addr_restricted(stcb, laddr->ifa)) { 6482 continue; 6483 } 6484 /* count this one */ 6485 count++; 6486 } 6487 } 6488 SCTP_IPI_ADDR_RUNLOCK(); 6489 return (count); 6490 } 6491 6492 #if defined(SCTP_LOCAL_TRACE_BUF) 6493 6494 void 6495 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) 6496 { 6497 uint32_t saveindex, newindex; 6498 6499 do { 6500 saveindex = sctp_log.index; 6501 if (saveindex >= SCTP_MAX_LOGGING_SIZE) { 6502 newindex = 1; 6503 } else { 6504 newindex = saveindex + 1; 6505 } 6506 } while (atomic_cmpset_int(&sctp_log.index, saveindex, newindex) == 0); 6507 if (saveindex >= SCTP_MAX_LOGGING_SIZE) { 6508 saveindex = 0; 6509 } 6510 sctp_log.entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT; 6511 sctp_log.entry[saveindex].subsys = subsys; 6512 sctp_log.entry[saveindex].params[0] = a; 6513 sctp_log.entry[saveindex].params[1] = b; 6514 sctp_log.entry[saveindex].params[2] = c; 6515 sctp_log.entry[saveindex].params[3] = d; 6516 sctp_log.entry[saveindex].params[4] = e; 6517 sctp_log.entry[saveindex].params[5] = f; 6518 } 6519 6520 #endif 6521