1 /*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * a) Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * b) Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the distribution. 15 * 16 * c) Neither the name of Cisco Systems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <netinet/sctp_os.h> 37 #include <netinet/sctp_pcb.h> 38 #include <netinet/sctputil.h> 39 #include <netinet/sctp_var.h> 40 #include <netinet/sctp_sysctl.h> 41 #ifdef INET6 42 #include <netinet6/sctp6_var.h> 43 #endif 44 #include <netinet/sctp_header.h> 45 #include <netinet/sctp_output.h> 46 #include <netinet/sctp_uio.h> 47 #include <netinet/sctp_timer.h> 48 #include <netinet/sctp_indata.h>/* for sctp_deliver_data() */ 49 #include <netinet/sctp_auth.h> 50 #include <netinet/sctp_asconf.h> 51 #include <netinet/sctp_bsd_addr.h> 52 #include <netinet/udp.h> 53 #include <netinet/udp_var.h> 54 #include <sys/proc.h> 55 56 57 #ifndef KTR_SCTP 58 #define KTR_SCTP KTR_SUBSYS 59 #endif 60 61 extern struct sctp_cc_functions sctp_cc_functions[]; 62 extern struct sctp_ss_functions sctp_ss_functions[]; 63 64 void 65 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr) 66 { 67 struct sctp_cwnd_log sctp_clog; 68 69 sctp_clog.x.sb.stcb = stcb; 70 sctp_clog.x.sb.so_sbcc = sb->sb_cc; 71 if (stcb) 72 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc; 73 else 74 sctp_clog.x.sb.stcb_sbcc = 0; 75 sctp_clog.x.sb.incr = incr; 76 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 77 SCTP_LOG_EVENT_SB, 78 from, 79 sctp_clog.x.misc.log1, 80 sctp_clog.x.misc.log2, 81 sctp_clog.x.misc.log3, 82 sctp_clog.x.misc.log4); 83 } 84 85 void 86 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc) 87 { 88 struct sctp_cwnd_log sctp_clog; 89 90 sctp_clog.x.close.inp = (void *)inp; 91 sctp_clog.x.close.sctp_flags = inp->sctp_flags; 92 if (stcb) { 93 sctp_clog.x.close.stcb = (void *)stcb; 94 sctp_clog.x.close.state = (uint16_t) stcb->asoc.state; 95 } else { 96 sctp_clog.x.close.stcb = 0; 97 sctp_clog.x.close.state = 0; 98 } 99 sctp_clog.x.close.loc = loc; 100 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 101 SCTP_LOG_EVENT_CLOSE, 102 0, 103 sctp_clog.x.misc.log1, 104 sctp_clog.x.misc.log2, 105 sctp_clog.x.misc.log3, 106 sctp_clog.x.misc.log4); 107 } 108 109 void 110 rto_logging(struct sctp_nets *net, int from) 111 { 112 struct sctp_cwnd_log sctp_clog; 113 114 memset(&sctp_clog, 0, sizeof(sctp_clog)); 115 sctp_clog.x.rto.net = (void *)net; 116 sctp_clog.x.rto.rtt = net->rtt / 1000; 117 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 118 SCTP_LOG_EVENT_RTT, 119 from, 120 sctp_clog.x.misc.log1, 121 sctp_clog.x.misc.log2, 122 sctp_clog.x.misc.log3, 123 sctp_clog.x.misc.log4); 124 } 125 126 void 127 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from) 128 { 129 struct sctp_cwnd_log sctp_clog; 130 131 sctp_clog.x.strlog.stcb = stcb; 132 sctp_clog.x.strlog.n_tsn = tsn; 133 sctp_clog.x.strlog.n_sseq = sseq; 134 sctp_clog.x.strlog.e_tsn = 0; 135 sctp_clog.x.strlog.e_sseq = 0; 136 sctp_clog.x.strlog.strm = stream; 137 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 138 SCTP_LOG_EVENT_STRM, 139 from, 140 sctp_clog.x.misc.log1, 141 sctp_clog.x.misc.log2, 142 sctp_clog.x.misc.log3, 143 sctp_clog.x.misc.log4); 144 } 145 146 void 147 sctp_log_nagle_event(struct sctp_tcb *stcb, int action) 148 { 149 struct sctp_cwnd_log sctp_clog; 150 151 sctp_clog.x.nagle.stcb = (void *)stcb; 152 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight; 153 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size; 154 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue; 155 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count; 156 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 157 SCTP_LOG_EVENT_NAGLE, 158 action, 159 sctp_clog.x.misc.log1, 160 sctp_clog.x.misc.log2, 161 sctp_clog.x.misc.log3, 162 sctp_clog.x.misc.log4); 163 } 164 165 void 166 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from) 167 { 168 struct sctp_cwnd_log sctp_clog; 169 170 sctp_clog.x.sack.cumack = cumack; 171 sctp_clog.x.sack.oldcumack = old_cumack; 172 sctp_clog.x.sack.tsn = tsn; 173 sctp_clog.x.sack.numGaps = gaps; 174 sctp_clog.x.sack.numDups = dups; 175 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 176 SCTP_LOG_EVENT_SACK, 177 from, 178 sctp_clog.x.misc.log1, 179 sctp_clog.x.misc.log2, 180 sctp_clog.x.misc.log3, 181 sctp_clog.x.misc.log4); 182 } 183 184 void 185 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from) 186 { 187 struct sctp_cwnd_log sctp_clog; 188 189 memset(&sctp_clog, 0, sizeof(sctp_clog)); 190 sctp_clog.x.map.base = map; 191 sctp_clog.x.map.cum = cum; 192 sctp_clog.x.map.high = high; 193 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 194 SCTP_LOG_EVENT_MAP, 195 from, 196 sctp_clog.x.misc.log1, 197 sctp_clog.x.misc.log2, 198 sctp_clog.x.misc.log3, 199 sctp_clog.x.misc.log4); 200 } 201 202 void 203 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from) 204 { 205 struct sctp_cwnd_log sctp_clog; 206 207 memset(&sctp_clog, 0, sizeof(sctp_clog)); 208 sctp_clog.x.fr.largest_tsn = biggest_tsn; 209 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn; 210 sctp_clog.x.fr.tsn = tsn; 211 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 212 SCTP_LOG_EVENT_FR, 213 from, 214 sctp_clog.x.misc.log1, 215 sctp_clog.x.misc.log2, 216 sctp_clog.x.misc.log3, 217 sctp_clog.x.misc.log4); 218 } 219 220 void 221 sctp_log_mb(struct mbuf *m, int from) 222 { 223 struct sctp_cwnd_log sctp_clog; 224 225 sctp_clog.x.mb.mp = m; 226 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m)); 227 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m)); 228 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0); 229 if (SCTP_BUF_IS_EXTENDED(m)) { 230 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m); 231 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m)); 232 } else { 233 sctp_clog.x.mb.ext = 0; 234 sctp_clog.x.mb.refcnt = 0; 235 } 236 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 237 SCTP_LOG_EVENT_MBUF, 238 from, 239 sctp_clog.x.misc.log1, 240 sctp_clog.x.misc.log2, 241 sctp_clog.x.misc.log3, 242 sctp_clog.x.misc.log4); 243 } 244 245 void 246 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from) 247 { 248 struct sctp_cwnd_log sctp_clog; 249 250 if (control == NULL) { 251 SCTP_PRINTF("Gak log of NULL?\n"); 252 return; 253 } 254 sctp_clog.x.strlog.stcb = control->stcb; 255 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn; 256 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn; 257 sctp_clog.x.strlog.strm = control->sinfo_stream; 258 if (poschk != NULL) { 259 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn; 260 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn; 261 } else { 262 sctp_clog.x.strlog.e_tsn = 0; 263 sctp_clog.x.strlog.e_sseq = 0; 264 } 265 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 266 SCTP_LOG_EVENT_STRM, 267 from, 268 sctp_clog.x.misc.log1, 269 sctp_clog.x.misc.log2, 270 sctp_clog.x.misc.log3, 271 sctp_clog.x.misc.log4); 272 } 273 274 void 275 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from) 276 { 277 struct sctp_cwnd_log sctp_clog; 278 279 sctp_clog.x.cwnd.net = net; 280 if (stcb->asoc.send_queue_cnt > 255) 281 sctp_clog.x.cwnd.cnt_in_send = 255; 282 else 283 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; 284 if (stcb->asoc.stream_queue_cnt > 255) 285 sctp_clog.x.cwnd.cnt_in_str = 255; 286 else 287 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; 288 289 if (net) { 290 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd; 291 sctp_clog.x.cwnd.inflight = net->flight_size; 292 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack; 293 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack; 294 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack; 295 } 296 if (SCTP_CWNDLOG_PRESEND == from) { 297 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd; 298 } 299 sctp_clog.x.cwnd.cwnd_augment = augment; 300 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 301 SCTP_LOG_EVENT_CWND, 302 from, 303 sctp_clog.x.misc.log1, 304 sctp_clog.x.misc.log2, 305 sctp_clog.x.misc.log3, 306 sctp_clog.x.misc.log4); 307 } 308 309 void 310 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from) 311 { 312 struct sctp_cwnd_log sctp_clog; 313 314 memset(&sctp_clog, 0, sizeof(sctp_clog)); 315 if (inp) { 316 sctp_clog.x.lock.sock = (void *)inp->sctp_socket; 317 318 } else { 319 sctp_clog.x.lock.sock = (void *)NULL; 320 } 321 sctp_clog.x.lock.inp = (void *)inp; 322 if (stcb) { 323 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx); 324 } else { 325 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN; 326 } 327 if (inp) { 328 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx); 329 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx); 330 } else { 331 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN; 332 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN; 333 } 334 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx)); 335 if (inp && (inp->sctp_socket)) { 336 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx)); 337 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx)); 338 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx)); 339 } else { 340 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN; 341 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN; 342 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN; 343 } 344 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 345 SCTP_LOG_LOCK_EVENT, 346 from, 347 sctp_clog.x.misc.log1, 348 sctp_clog.x.misc.log2, 349 sctp_clog.x.misc.log3, 350 sctp_clog.x.misc.log4); 351 } 352 353 void 354 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from) 355 { 356 struct sctp_cwnd_log sctp_clog; 357 358 memset(&sctp_clog, 0, sizeof(sctp_clog)); 359 sctp_clog.x.cwnd.net = net; 360 sctp_clog.x.cwnd.cwnd_new_value = error; 361 sctp_clog.x.cwnd.inflight = net->flight_size; 362 sctp_clog.x.cwnd.cwnd_augment = burst; 363 if (stcb->asoc.send_queue_cnt > 255) 364 sctp_clog.x.cwnd.cnt_in_send = 255; 365 else 366 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; 367 if (stcb->asoc.stream_queue_cnt > 255) 368 sctp_clog.x.cwnd.cnt_in_str = 255; 369 else 370 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; 371 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 372 SCTP_LOG_EVENT_MAXBURST, 373 from, 374 sctp_clog.x.misc.log1, 375 sctp_clog.x.misc.log2, 376 sctp_clog.x.misc.log3, 377 sctp_clog.x.misc.log4); 378 } 379 380 void 381 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead) 382 { 383 struct sctp_cwnd_log sctp_clog; 384 385 sctp_clog.x.rwnd.rwnd = peers_rwnd; 386 sctp_clog.x.rwnd.send_size = snd_size; 387 sctp_clog.x.rwnd.overhead = overhead; 388 sctp_clog.x.rwnd.new_rwnd = 0; 389 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 390 SCTP_LOG_EVENT_RWND, 391 from, 392 sctp_clog.x.misc.log1, 393 sctp_clog.x.misc.log2, 394 sctp_clog.x.misc.log3, 395 sctp_clog.x.misc.log4); 396 } 397 398 void 399 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval) 400 { 401 struct sctp_cwnd_log sctp_clog; 402 403 sctp_clog.x.rwnd.rwnd = peers_rwnd; 404 sctp_clog.x.rwnd.send_size = flight_size; 405 sctp_clog.x.rwnd.overhead = overhead; 406 sctp_clog.x.rwnd.new_rwnd = a_rwndval; 407 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 408 SCTP_LOG_EVENT_RWND, 409 from, 410 sctp_clog.x.misc.log1, 411 sctp_clog.x.misc.log2, 412 sctp_clog.x.misc.log3, 413 sctp_clog.x.misc.log4); 414 } 415 416 void 417 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt) 418 { 419 struct sctp_cwnd_log sctp_clog; 420 421 sctp_clog.x.mbcnt.total_queue_size = total_oq; 422 sctp_clog.x.mbcnt.size_change = book; 423 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q; 424 sctp_clog.x.mbcnt.mbcnt_change = mbcnt; 425 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 426 SCTP_LOG_EVENT_MBCNT, 427 from, 428 sctp_clog.x.misc.log1, 429 sctp_clog.x.misc.log2, 430 sctp_clog.x.misc.log3, 431 sctp_clog.x.misc.log4); 432 } 433 434 void 435 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d) 436 { 437 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 438 SCTP_LOG_MISC_EVENT, 439 from, 440 a, b, c, d); 441 } 442 443 void 444 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from) 445 { 446 struct sctp_cwnd_log sctp_clog; 447 448 sctp_clog.x.wake.stcb = (void *)stcb; 449 sctp_clog.x.wake.wake_cnt = wake_cnt; 450 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count; 451 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt; 452 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt; 453 454 if (stcb->asoc.stream_queue_cnt < 0xff) 455 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt; 456 else 457 sctp_clog.x.wake.stream_qcnt = 0xff; 458 459 if (stcb->asoc.chunks_on_out_queue < 0xff) 460 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue; 461 else 462 sctp_clog.x.wake.chunks_on_oque = 0xff; 463 464 sctp_clog.x.wake.sctpflags = 0; 465 /* set in the defered mode stuff */ 466 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) 467 sctp_clog.x.wake.sctpflags |= 1; 468 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) 469 sctp_clog.x.wake.sctpflags |= 2; 470 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) 471 sctp_clog.x.wake.sctpflags |= 4; 472 /* what about the sb */ 473 if (stcb->sctp_socket) { 474 struct socket *so = stcb->sctp_socket; 475 476 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff)); 477 } else { 478 sctp_clog.x.wake.sbflags = 0xff; 479 } 480 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 481 SCTP_LOG_EVENT_WAKE, 482 from, 483 sctp_clog.x.misc.log1, 484 sctp_clog.x.misc.log2, 485 sctp_clog.x.misc.log3, 486 sctp_clog.x.misc.log4); 487 } 488 489 void 490 sctp_log_block(uint8_t from, struct sctp_association *asoc, int sendlen) 491 { 492 struct sctp_cwnd_log sctp_clog; 493 494 sctp_clog.x.blk.onsb = asoc->total_output_queue_size; 495 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt); 496 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd; 497 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt; 498 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue; 499 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024); 500 sctp_clog.x.blk.sndlen = sendlen; 501 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", 502 SCTP_LOG_EVENT_BLOCK, 503 from, 504 sctp_clog.x.misc.log1, 505 sctp_clog.x.misc.log2, 506 sctp_clog.x.misc.log3, 507 sctp_clog.x.misc.log4); 508 } 509 510 int 511 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED) 512 { 513 /* May need to fix this if ktrdump does not work */ 514 return (0); 515 } 516 517 #ifdef SCTP_AUDITING_ENABLED 518 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2]; 519 static int sctp_audit_indx = 0; 520 521 static 522 void 523 sctp_print_audit_report(void) 524 { 525 int i; 526 int cnt; 527 528 cnt = 0; 529 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) { 530 if ((sctp_audit_data[i][0] == 0xe0) && 531 (sctp_audit_data[i][1] == 0x01)) { 532 cnt = 0; 533 SCTP_PRINTF("\n"); 534 } else if (sctp_audit_data[i][0] == 0xf0) { 535 cnt = 0; 536 SCTP_PRINTF("\n"); 537 } else if ((sctp_audit_data[i][0] == 0xc0) && 538 (sctp_audit_data[i][1] == 0x01)) { 539 SCTP_PRINTF("\n"); 540 cnt = 0; 541 } 542 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0], 543 (uint32_t) sctp_audit_data[i][1]); 544 cnt++; 545 if ((cnt % 14) == 0) 546 SCTP_PRINTF("\n"); 547 } 548 for (i = 0; i < sctp_audit_indx; i++) { 549 if ((sctp_audit_data[i][0] == 0xe0) && 550 (sctp_audit_data[i][1] == 0x01)) { 551 cnt = 0; 552 SCTP_PRINTF("\n"); 553 } else if (sctp_audit_data[i][0] == 0xf0) { 554 cnt = 0; 555 SCTP_PRINTF("\n"); 556 } else if ((sctp_audit_data[i][0] == 0xc0) && 557 (sctp_audit_data[i][1] == 0x01)) { 558 SCTP_PRINTF("\n"); 559 cnt = 0; 560 } 561 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0], 562 (uint32_t) sctp_audit_data[i][1]); 563 cnt++; 564 if ((cnt % 14) == 0) 565 SCTP_PRINTF("\n"); 566 } 567 SCTP_PRINTF("\n"); 568 } 569 570 void 571 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 572 struct sctp_nets *net) 573 { 574 int resend_cnt, tot_out, rep, tot_book_cnt; 575 struct sctp_nets *lnet; 576 struct sctp_tmit_chunk *chk; 577 578 sctp_audit_data[sctp_audit_indx][0] = 0xAA; 579 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from; 580 sctp_audit_indx++; 581 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 582 sctp_audit_indx = 0; 583 } 584 if (inp == NULL) { 585 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 586 sctp_audit_data[sctp_audit_indx][1] = 0x01; 587 sctp_audit_indx++; 588 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 589 sctp_audit_indx = 0; 590 } 591 return; 592 } 593 if (stcb == NULL) { 594 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 595 sctp_audit_data[sctp_audit_indx][1] = 0x02; 596 sctp_audit_indx++; 597 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 598 sctp_audit_indx = 0; 599 } 600 return; 601 } 602 sctp_audit_data[sctp_audit_indx][0] = 0xA1; 603 sctp_audit_data[sctp_audit_indx][1] = 604 (0x000000ff & stcb->asoc.sent_queue_retran_cnt); 605 sctp_audit_indx++; 606 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 607 sctp_audit_indx = 0; 608 } 609 rep = 0; 610 tot_book_cnt = 0; 611 resend_cnt = tot_out = 0; 612 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 613 if (chk->sent == SCTP_DATAGRAM_RESEND) { 614 resend_cnt++; 615 } else if (chk->sent < SCTP_DATAGRAM_RESEND) { 616 tot_out += chk->book_size; 617 tot_book_cnt++; 618 } 619 } 620 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) { 621 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 622 sctp_audit_data[sctp_audit_indx][1] = 0xA1; 623 sctp_audit_indx++; 624 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 625 sctp_audit_indx = 0; 626 } 627 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n", 628 resend_cnt, stcb->asoc.sent_queue_retran_cnt); 629 rep = 1; 630 stcb->asoc.sent_queue_retran_cnt = resend_cnt; 631 sctp_audit_data[sctp_audit_indx][0] = 0xA2; 632 sctp_audit_data[sctp_audit_indx][1] = 633 (0x000000ff & stcb->asoc.sent_queue_retran_cnt); 634 sctp_audit_indx++; 635 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 636 sctp_audit_indx = 0; 637 } 638 } 639 if (tot_out != stcb->asoc.total_flight) { 640 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 641 sctp_audit_data[sctp_audit_indx][1] = 0xA2; 642 sctp_audit_indx++; 643 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 644 sctp_audit_indx = 0; 645 } 646 rep = 1; 647 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out, 648 (int)stcb->asoc.total_flight); 649 stcb->asoc.total_flight = tot_out; 650 } 651 if (tot_book_cnt != stcb->asoc.total_flight_count) { 652 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 653 sctp_audit_data[sctp_audit_indx][1] = 0xA5; 654 sctp_audit_indx++; 655 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 656 sctp_audit_indx = 0; 657 } 658 rep = 1; 659 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt); 660 661 stcb->asoc.total_flight_count = tot_book_cnt; 662 } 663 tot_out = 0; 664 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 665 tot_out += lnet->flight_size; 666 } 667 if (tot_out != stcb->asoc.total_flight) { 668 sctp_audit_data[sctp_audit_indx][0] = 0xAF; 669 sctp_audit_data[sctp_audit_indx][1] = 0xA3; 670 sctp_audit_indx++; 671 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 672 sctp_audit_indx = 0; 673 } 674 rep = 1; 675 SCTP_PRINTF("real flight:%d net total was %d\n", 676 stcb->asoc.total_flight, tot_out); 677 /* now corrective action */ 678 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 679 680 tot_out = 0; 681 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 682 if ((chk->whoTo == lnet) && 683 (chk->sent < SCTP_DATAGRAM_RESEND)) { 684 tot_out += chk->book_size; 685 } 686 } 687 if (lnet->flight_size != tot_out) { 688 SCTP_PRINTF("net:%p flight was %d corrected to %d\n", 689 (void *)lnet, lnet->flight_size, 690 tot_out); 691 lnet->flight_size = tot_out; 692 } 693 } 694 } 695 if (rep) { 696 sctp_print_audit_report(); 697 } 698 } 699 700 void 701 sctp_audit_log(uint8_t ev, uint8_t fd) 702 { 703 704 sctp_audit_data[sctp_audit_indx][0] = ev; 705 sctp_audit_data[sctp_audit_indx][1] = fd; 706 sctp_audit_indx++; 707 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { 708 sctp_audit_indx = 0; 709 } 710 } 711 712 #endif 713 714 /* 715 * sctp_stop_timers_for_shutdown() should be called 716 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT 717 * state to make sure that all timers are stopped. 718 */ 719 void 720 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb) 721 { 722 struct sctp_association *asoc; 723 struct sctp_nets *net; 724 725 asoc = &stcb->asoc; 726 727 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer); 728 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer); 729 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer); 730 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer); 731 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer); 732 TAILQ_FOREACH(net, &asoc->nets, sctp_next) { 733 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer); 734 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer); 735 } 736 } 737 738 /* 739 * a list of sizes based on typical mtu's, used only if next hop size not 740 * returned. 741 */ 742 static uint32_t sctp_mtu_sizes[] = { 743 68, 744 296, 745 508, 746 512, 747 544, 748 576, 749 1006, 750 1492, 751 1500, 752 1536, 753 2002, 754 2048, 755 4352, 756 4464, 757 8166, 758 17914, 759 32000, 760 65535 761 }; 762 763 /* 764 * Return the largest MTU smaller than val. If there is no 765 * entry, just return val. 766 */ 767 uint32_t 768 sctp_get_prev_mtu(uint32_t val) 769 { 770 uint32_t i; 771 772 if (val <= sctp_mtu_sizes[0]) { 773 return (val); 774 } 775 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { 776 if (val <= sctp_mtu_sizes[i]) { 777 break; 778 } 779 } 780 return (sctp_mtu_sizes[i - 1]); 781 } 782 783 /* 784 * Return the smallest MTU larger than val. If there is no 785 * entry, just return val. 786 */ 787 uint32_t 788 sctp_get_next_mtu(uint32_t val) 789 { 790 /* select another MTU that is just bigger than this one */ 791 uint32_t i; 792 793 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { 794 if (val < sctp_mtu_sizes[i]) { 795 return (sctp_mtu_sizes[i]); 796 } 797 } 798 return (val); 799 } 800 801 void 802 sctp_fill_random_store(struct sctp_pcb *m) 803 { 804 /* 805 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and 806 * our counter. The result becomes our good random numbers and we 807 * then setup to give these out. Note that we do no locking to 808 * protect this. This is ok, since if competing folks call this we 809 * will get more gobbled gook in the random store which is what we 810 * want. There is a danger that two guys will use the same random 811 * numbers, but thats ok too since that is random as well :-> 812 */ 813 m->store_at = 0; 814 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers, 815 sizeof(m->random_numbers), (uint8_t *) & m->random_counter, 816 sizeof(m->random_counter), (uint8_t *) m->random_store); 817 m->random_counter++; 818 } 819 820 uint32_t 821 sctp_select_initial_TSN(struct sctp_pcb *inp) 822 { 823 /* 824 * A true implementation should use random selection process to get 825 * the initial stream sequence number, using RFC1750 as a good 826 * guideline 827 */ 828 uint32_t x, *xp; 829 uint8_t *p; 830 int store_at, new_store; 831 832 if (inp->initial_sequence_debug != 0) { 833 uint32_t ret; 834 835 ret = inp->initial_sequence_debug; 836 inp->initial_sequence_debug++; 837 return (ret); 838 } 839 retry: 840 store_at = inp->store_at; 841 new_store = store_at + sizeof(uint32_t); 842 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) { 843 new_store = 0; 844 } 845 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) { 846 goto retry; 847 } 848 if (new_store == 0) { 849 /* Refill the random store */ 850 sctp_fill_random_store(inp); 851 } 852 p = &inp->random_store[store_at]; 853 xp = (uint32_t *) p; 854 x = *xp; 855 return (x); 856 } 857 858 uint32_t 859 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check) 860 { 861 uint32_t x; 862 struct timeval now; 863 864 if (check) { 865 (void)SCTP_GETTIME_TIMEVAL(&now); 866 } 867 for (;;) { 868 x = sctp_select_initial_TSN(&inp->sctp_ep); 869 if (x == 0) { 870 /* we never use 0 */ 871 continue; 872 } 873 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) { 874 break; 875 } 876 } 877 return (x); 878 } 879 880 int 881 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 882 uint32_t override_tag, uint32_t vrf_id) 883 { 884 struct sctp_association *asoc; 885 886 /* 887 * Anything set to zero is taken care of by the allocation routine's 888 * bzero 889 */ 890 891 /* 892 * Up front select what scoping to apply on addresses I tell my peer 893 * Not sure what to do with these right now, we will need to come up 894 * with a way to set them. We may need to pass them through from the 895 * caller in the sctp_aloc_assoc() function. 896 */ 897 int i; 898 899 asoc = &stcb->asoc; 900 /* init all variables to a known value. */ 901 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE); 902 asoc->max_burst = inp->sctp_ep.max_burst; 903 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst; 904 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]); 905 asoc->cookie_life = inp->sctp_ep.def_cookie_life; 906 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off; 907 asoc->ecn_allowed = inp->sctp_ecn_enable; 908 asoc->sctp_nr_sack_on_off = (uint8_t) SCTP_BASE_SYSCTL(sctp_nr_sack_on_off); 909 asoc->sctp_cmt_pf = (uint8_t) 0; 910 asoc->sctp_frag_point = inp->sctp_frag_point; 911 asoc->sctp_features = inp->sctp_features; 912 asoc->default_dscp = inp->sctp_ep.default_dscp; 913 #ifdef INET6 914 if (inp->sctp_ep.default_flowlabel) { 915 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel; 916 } else { 917 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) { 918 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep); 919 asoc->default_flowlabel &= 0x000fffff; 920 asoc->default_flowlabel |= 0x80000000; 921 } else { 922 asoc->default_flowlabel = 0; 923 } 924 } 925 #endif 926 asoc->sb_send_resv = 0; 927 if (override_tag) { 928 asoc->my_vtag = override_tag; 929 } else { 930 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1); 931 } 932 /* Get the nonce tags */ 933 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0); 934 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0); 935 asoc->vrf_id = vrf_id; 936 937 #ifdef SCTP_ASOCLOG_OF_TSNS 938 asoc->tsn_in_at = 0; 939 asoc->tsn_out_at = 0; 940 asoc->tsn_in_wrapped = 0; 941 asoc->tsn_out_wrapped = 0; 942 asoc->cumack_log_at = 0; 943 asoc->cumack_log_atsnt = 0; 944 #endif 945 #ifdef SCTP_FS_SPEC_LOG 946 asoc->fs_index = 0; 947 #endif 948 asoc->refcnt = 0; 949 asoc->assoc_up_sent = 0; 950 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq = 951 sctp_select_initial_TSN(&inp->sctp_ep); 952 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1; 953 /* we are optimisitic here */ 954 asoc->peer_supports_pktdrop = 1; 955 asoc->peer_supports_nat = 0; 956 asoc->sent_queue_retran_cnt = 0; 957 958 /* for CMT */ 959 asoc->last_net_cmt_send_started = NULL; 960 961 /* This will need to be adjusted */ 962 asoc->last_acked_seq = asoc->init_seq_number - 1; 963 asoc->advanced_peer_ack_point = asoc->last_acked_seq; 964 asoc->asconf_seq_in = asoc->last_acked_seq; 965 966 /* here we are different, we hold the next one we expect */ 967 asoc->str_reset_seq_in = asoc->last_acked_seq + 1; 968 969 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max; 970 asoc->initial_rto = inp->sctp_ep.initial_rto; 971 972 asoc->max_init_times = inp->sctp_ep.max_init_times; 973 asoc->max_send_times = inp->sctp_ep.max_send_times; 974 asoc->def_net_failure = inp->sctp_ep.def_net_failure; 975 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold; 976 asoc->free_chunk_cnt = 0; 977 978 asoc->iam_blocking = 0; 979 asoc->context = inp->sctp_context; 980 asoc->local_strreset_support = inp->local_strreset_support; 981 asoc->def_send = inp->def_send; 982 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); 983 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq; 984 asoc->pr_sctp_cnt = 0; 985 asoc->total_output_queue_size = 0; 986 987 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 988 asoc->scope.ipv6_addr_legal = 1; 989 if (SCTP_IPV6_V6ONLY(inp) == 0) { 990 asoc->scope.ipv4_addr_legal = 1; 991 } else { 992 asoc->scope.ipv4_addr_legal = 0; 993 } 994 } else { 995 asoc->scope.ipv6_addr_legal = 0; 996 asoc->scope.ipv4_addr_legal = 1; 997 } 998 999 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND); 1000 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket); 1001 1002 asoc->smallest_mtu = inp->sctp_frag_point; 1003 asoc->minrto = inp->sctp_ep.sctp_minrto; 1004 asoc->maxrto = inp->sctp_ep.sctp_maxrto; 1005 1006 asoc->locked_on_sending = NULL; 1007 asoc->stream_locked_on = 0; 1008 asoc->ecn_echo_cnt_onq = 0; 1009 asoc->stream_locked = 0; 1010 1011 asoc->send_sack = 1; 1012 1013 LIST_INIT(&asoc->sctp_restricted_addrs); 1014 1015 TAILQ_INIT(&asoc->nets); 1016 TAILQ_INIT(&asoc->pending_reply_queue); 1017 TAILQ_INIT(&asoc->asconf_ack_sent); 1018 /* Setup to fill the hb random cache at first HB */ 1019 asoc->hb_random_idx = 4; 1020 1021 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time; 1022 1023 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module; 1024 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module]; 1025 1026 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module; 1027 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module]; 1028 1029 /* 1030 * Now the stream parameters, here we allocate space for all streams 1031 * that we request by default. 1032 */ 1033 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams = 1034 inp->sctp_ep.pre_open_stream_count; 1035 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *, 1036 asoc->streamoutcnt * sizeof(struct sctp_stream_out), 1037 SCTP_M_STRMO); 1038 if (asoc->strmout == NULL) { 1039 /* big trouble no memory */ 1040 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1041 return (ENOMEM); 1042 } 1043 for (i = 0; i < asoc->streamoutcnt; i++) { 1044 /* 1045 * inbound side must be set to 0xffff, also NOTE when we get 1046 * the INIT-ACK back (for INIT sender) we MUST reduce the 1047 * count (streamoutcnt) but first check if we sent to any of 1048 * the upper streams that were dropped (if some were). Those 1049 * that were dropped must be notified to the upper layer as 1050 * failed to send. 1051 */ 1052 asoc->strmout[i].next_sequence_send = 0x0; 1053 TAILQ_INIT(&asoc->strmout[i].outqueue); 1054 asoc->strmout[i].chunks_on_queues = 0; 1055 asoc->strmout[i].stream_no = i; 1056 asoc->strmout[i].last_msg_incomplete = 0; 1057 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL); 1058 } 1059 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0); 1060 1061 /* Now the mapping array */ 1062 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY; 1063 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size, 1064 SCTP_M_MAP); 1065 if (asoc->mapping_array == NULL) { 1066 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1067 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1068 return (ENOMEM); 1069 } 1070 memset(asoc->mapping_array, 0, asoc->mapping_array_size); 1071 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size, 1072 SCTP_M_MAP); 1073 if (asoc->nr_mapping_array == NULL) { 1074 SCTP_FREE(asoc->strmout, SCTP_M_STRMO); 1075 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1076 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 1077 return (ENOMEM); 1078 } 1079 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size); 1080 1081 /* Now the init of the other outqueues */ 1082 TAILQ_INIT(&asoc->free_chunks); 1083 TAILQ_INIT(&asoc->control_send_queue); 1084 TAILQ_INIT(&asoc->asconf_send_queue); 1085 TAILQ_INIT(&asoc->send_queue); 1086 TAILQ_INIT(&asoc->sent_queue); 1087 TAILQ_INIT(&asoc->reasmqueue); 1088 TAILQ_INIT(&asoc->resetHead); 1089 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome; 1090 TAILQ_INIT(&asoc->asconf_queue); 1091 /* authentication fields */ 1092 asoc->authinfo.random = NULL; 1093 asoc->authinfo.active_keyid = 0; 1094 asoc->authinfo.assoc_key = NULL; 1095 asoc->authinfo.assoc_keyid = 0; 1096 asoc->authinfo.recv_key = NULL; 1097 asoc->authinfo.recv_keyid = 0; 1098 LIST_INIT(&asoc->shared_keys); 1099 asoc->marked_retrans = 0; 1100 asoc->port = inp->sctp_ep.port; 1101 asoc->timoinit = 0; 1102 asoc->timodata = 0; 1103 asoc->timosack = 0; 1104 asoc->timoshutdown = 0; 1105 asoc->timoheartbeat = 0; 1106 asoc->timocookie = 0; 1107 asoc->timoshutdownack = 0; 1108 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time); 1109 asoc->discontinuity_time = asoc->start_time; 1110 /* 1111 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and 1112 * freed later when the association is freed. 1113 */ 1114 return (0); 1115 } 1116 1117 void 1118 sctp_print_mapping_array(struct sctp_association *asoc) 1119 { 1120 unsigned int i, limit; 1121 1122 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n", 1123 asoc->mapping_array_size, 1124 asoc->mapping_array_base_tsn, 1125 asoc->cumulative_tsn, 1126 asoc->highest_tsn_inside_map, 1127 asoc->highest_tsn_inside_nr_map); 1128 for (limit = asoc->mapping_array_size; limit > 1; limit--) { 1129 if (asoc->mapping_array[limit - 1] != 0) { 1130 break; 1131 } 1132 } 1133 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); 1134 for (i = 0; i < limit; i++) { 1135 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); 1136 } 1137 if (limit % 16) 1138 SCTP_PRINTF("\n"); 1139 for (limit = asoc->mapping_array_size; limit > 1; limit--) { 1140 if (asoc->nr_mapping_array[limit - 1]) { 1141 break; 1142 } 1143 } 1144 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); 1145 for (i = 0; i < limit; i++) { 1146 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); 1147 } 1148 if (limit % 16) 1149 SCTP_PRINTF("\n"); 1150 } 1151 1152 int 1153 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed) 1154 { 1155 /* mapping array needs to grow */ 1156 uint8_t *new_array1, *new_array2; 1157 uint32_t new_size; 1158 1159 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR); 1160 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP); 1161 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP); 1162 if ((new_array1 == NULL) || (new_array2 == NULL)) { 1163 /* can't get more, forget it */ 1164 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size); 1165 if (new_array1) { 1166 SCTP_FREE(new_array1, SCTP_M_MAP); 1167 } 1168 if (new_array2) { 1169 SCTP_FREE(new_array2, SCTP_M_MAP); 1170 } 1171 return (-1); 1172 } 1173 memset(new_array1, 0, new_size); 1174 memset(new_array2, 0, new_size); 1175 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size); 1176 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size); 1177 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); 1178 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP); 1179 asoc->mapping_array = new_array1; 1180 asoc->nr_mapping_array = new_array2; 1181 asoc->mapping_array_size = new_size; 1182 return (0); 1183 } 1184 1185 1186 static void 1187 sctp_iterator_work(struct sctp_iterator *it) 1188 { 1189 int iteration_count = 0; 1190 int inp_skip = 0; 1191 int first_in = 1; 1192 struct sctp_inpcb *tinp; 1193 1194 SCTP_INP_INFO_RLOCK(); 1195 SCTP_ITERATOR_LOCK(); 1196 if (it->inp) { 1197 SCTP_INP_RLOCK(it->inp); 1198 SCTP_INP_DECR_REF(it->inp); 1199 } 1200 if (it->inp == NULL) { 1201 /* iterator is complete */ 1202 done_with_iterator: 1203 SCTP_ITERATOR_UNLOCK(); 1204 SCTP_INP_INFO_RUNLOCK(); 1205 if (it->function_atend != NULL) { 1206 (*it->function_atend) (it->pointer, it->val); 1207 } 1208 SCTP_FREE(it, SCTP_M_ITER); 1209 return; 1210 } 1211 select_a_new_ep: 1212 if (first_in) { 1213 first_in = 0; 1214 } else { 1215 SCTP_INP_RLOCK(it->inp); 1216 } 1217 while (((it->pcb_flags) && 1218 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) || 1219 ((it->pcb_features) && 1220 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) { 1221 /* endpoint flags or features don't match, so keep looking */ 1222 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1223 SCTP_INP_RUNLOCK(it->inp); 1224 goto done_with_iterator; 1225 } 1226 tinp = it->inp; 1227 it->inp = LIST_NEXT(it->inp, sctp_list); 1228 SCTP_INP_RUNLOCK(tinp); 1229 if (it->inp == NULL) { 1230 goto done_with_iterator; 1231 } 1232 SCTP_INP_RLOCK(it->inp); 1233 } 1234 /* now go through each assoc which is in the desired state */ 1235 if (it->done_current_ep == 0) { 1236 if (it->function_inp != NULL) 1237 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val); 1238 it->done_current_ep = 1; 1239 } 1240 if (it->stcb == NULL) { 1241 /* run the per instance function */ 1242 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list); 1243 } 1244 if ((inp_skip) || it->stcb == NULL) { 1245 if (it->function_inp_end != NULL) { 1246 inp_skip = (*it->function_inp_end) (it->inp, 1247 it->pointer, 1248 it->val); 1249 } 1250 SCTP_INP_RUNLOCK(it->inp); 1251 goto no_stcb; 1252 } 1253 while (it->stcb) { 1254 SCTP_TCB_LOCK(it->stcb); 1255 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) { 1256 /* not in the right state... keep looking */ 1257 SCTP_TCB_UNLOCK(it->stcb); 1258 goto next_assoc; 1259 } 1260 /* see if we have limited out the iterator loop */ 1261 iteration_count++; 1262 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) { 1263 /* Pause to let others grab the lock */ 1264 atomic_add_int(&it->stcb->asoc.refcnt, 1); 1265 SCTP_TCB_UNLOCK(it->stcb); 1266 SCTP_INP_INCR_REF(it->inp); 1267 SCTP_INP_RUNLOCK(it->inp); 1268 SCTP_ITERATOR_UNLOCK(); 1269 SCTP_INP_INFO_RUNLOCK(); 1270 SCTP_INP_INFO_RLOCK(); 1271 SCTP_ITERATOR_LOCK(); 1272 if (sctp_it_ctl.iterator_flags) { 1273 /* We won't be staying here */ 1274 SCTP_INP_DECR_REF(it->inp); 1275 atomic_add_int(&it->stcb->asoc.refcnt, -1); 1276 if (sctp_it_ctl.iterator_flags & 1277 SCTP_ITERATOR_STOP_CUR_IT) { 1278 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT; 1279 goto done_with_iterator; 1280 } 1281 if (sctp_it_ctl.iterator_flags & 1282 SCTP_ITERATOR_STOP_CUR_INP) { 1283 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP; 1284 goto no_stcb; 1285 } 1286 /* If we reach here huh? */ 1287 SCTP_PRINTF("Unknown it ctl flag %x\n", 1288 sctp_it_ctl.iterator_flags); 1289 sctp_it_ctl.iterator_flags = 0; 1290 } 1291 SCTP_INP_RLOCK(it->inp); 1292 SCTP_INP_DECR_REF(it->inp); 1293 SCTP_TCB_LOCK(it->stcb); 1294 atomic_add_int(&it->stcb->asoc.refcnt, -1); 1295 iteration_count = 0; 1296 } 1297 /* run function on this one */ 1298 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val); 1299 1300 /* 1301 * we lie here, it really needs to have its own type but 1302 * first I must verify that this won't effect things :-0 1303 */ 1304 if (it->no_chunk_output == 0) 1305 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1306 1307 SCTP_TCB_UNLOCK(it->stcb); 1308 next_assoc: 1309 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist); 1310 if (it->stcb == NULL) { 1311 /* Run last function */ 1312 if (it->function_inp_end != NULL) { 1313 inp_skip = (*it->function_inp_end) (it->inp, 1314 it->pointer, 1315 it->val); 1316 } 1317 } 1318 } 1319 SCTP_INP_RUNLOCK(it->inp); 1320 no_stcb: 1321 /* done with all assocs on this endpoint, move on to next endpoint */ 1322 it->done_current_ep = 0; 1323 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { 1324 it->inp = NULL; 1325 } else { 1326 it->inp = LIST_NEXT(it->inp, sctp_list); 1327 } 1328 if (it->inp == NULL) { 1329 goto done_with_iterator; 1330 } 1331 goto select_a_new_ep; 1332 } 1333 1334 void 1335 sctp_iterator_worker(void) 1336 { 1337 struct sctp_iterator *it, *nit; 1338 1339 /* This function is called with the WQ lock in place */ 1340 1341 sctp_it_ctl.iterator_running = 1; 1342 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) { 1343 sctp_it_ctl.cur_it = it; 1344 /* now lets work on this one */ 1345 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); 1346 SCTP_IPI_ITERATOR_WQ_UNLOCK(); 1347 CURVNET_SET(it->vn); 1348 sctp_iterator_work(it); 1349 sctp_it_ctl.cur_it = NULL; 1350 CURVNET_RESTORE(); 1351 SCTP_IPI_ITERATOR_WQ_LOCK(); 1352 /* sa_ignore FREED_MEMORY */ 1353 } 1354 sctp_it_ctl.iterator_running = 0; 1355 return; 1356 } 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, *nwi; 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 1379 SCTP_WQ_ADDR_LOCK(); 1380 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) { 1381 LIST_REMOVE(wi, sctp_nxt_addr); 1382 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr); 1383 asc->cnt++; 1384 } 1385 SCTP_WQ_ADDR_UNLOCK(); 1386 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 void 1402 sctp_timeout_handler(void *t) 1403 { 1404 struct sctp_inpcb *inp; 1405 struct sctp_tcb *stcb; 1406 struct sctp_nets *net; 1407 struct sctp_timer *tmr; 1408 1409 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1410 struct socket *so; 1411 1412 #endif 1413 int did_output, type; 1414 1415 tmr = (struct sctp_timer *)t; 1416 inp = (struct sctp_inpcb *)tmr->ep; 1417 stcb = (struct sctp_tcb *)tmr->tcb; 1418 net = (struct sctp_nets *)tmr->net; 1419 CURVNET_SET((struct vnet *)tmr->vnet); 1420 did_output = 1; 1421 1422 #ifdef SCTP_AUDITING_ENABLED 1423 sctp_audit_log(0xF0, (uint8_t) tmr->type); 1424 sctp_auditing(3, inp, stcb, net); 1425 #endif 1426 1427 /* sanity checks... */ 1428 if (tmr->self != (void *)tmr) { 1429 /* 1430 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n", 1431 * (void *)tmr); 1432 */ 1433 CURVNET_RESTORE(); 1434 return; 1435 } 1436 tmr->stopped_from = 0xa001; 1437 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) { 1438 /* 1439 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n", 1440 * tmr->type); 1441 */ 1442 CURVNET_RESTORE(); 1443 return; 1444 } 1445 tmr->stopped_from = 0xa002; 1446 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) { 1447 CURVNET_RESTORE(); 1448 return; 1449 } 1450 /* if this is an iterator timeout, get the struct and clear inp */ 1451 tmr->stopped_from = 0xa003; 1452 type = tmr->type; 1453 if (inp) { 1454 SCTP_INP_INCR_REF(inp); 1455 if ((inp->sctp_socket == NULL) && 1456 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) && 1457 (tmr->type != SCTP_TIMER_TYPE_INIT) && 1458 (tmr->type != SCTP_TIMER_TYPE_SEND) && 1459 (tmr->type != SCTP_TIMER_TYPE_RECV) && 1460 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) && 1461 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) && 1462 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) && 1463 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) && 1464 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL)) 1465 ) { 1466 SCTP_INP_DECR_REF(inp); 1467 CURVNET_RESTORE(); 1468 return; 1469 } 1470 } 1471 tmr->stopped_from = 0xa004; 1472 if (stcb) { 1473 atomic_add_int(&stcb->asoc.refcnt, 1); 1474 if (stcb->asoc.state == 0) { 1475 atomic_add_int(&stcb->asoc.refcnt, -1); 1476 if (inp) { 1477 SCTP_INP_DECR_REF(inp); 1478 } 1479 CURVNET_RESTORE(); 1480 return; 1481 } 1482 } 1483 tmr->stopped_from = 0xa005; 1484 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type); 1485 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1486 if (inp) { 1487 SCTP_INP_DECR_REF(inp); 1488 } 1489 if (stcb) { 1490 atomic_add_int(&stcb->asoc.refcnt, -1); 1491 } 1492 CURVNET_RESTORE(); 1493 return; 1494 } 1495 tmr->stopped_from = 0xa006; 1496 1497 if (stcb) { 1498 SCTP_TCB_LOCK(stcb); 1499 atomic_add_int(&stcb->asoc.refcnt, -1); 1500 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) && 1501 ((stcb->asoc.state == 0) || 1502 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) { 1503 SCTP_TCB_UNLOCK(stcb); 1504 if (inp) { 1505 SCTP_INP_DECR_REF(inp); 1506 } 1507 CURVNET_RESTORE(); 1508 return; 1509 } 1510 } 1511 /* record in stopped what t-o occured */ 1512 tmr->stopped_from = tmr->type; 1513 1514 /* mark as being serviced now */ 1515 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 1516 /* 1517 * Callout has been rescheduled. 1518 */ 1519 goto get_out; 1520 } 1521 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { 1522 /* 1523 * Not active, so no action. 1524 */ 1525 goto get_out; 1526 } 1527 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer); 1528 1529 /* call the handler for the appropriate timer type */ 1530 switch (tmr->type) { 1531 case SCTP_TIMER_TYPE_ZERO_COPY: 1532 if (inp == NULL) { 1533 break; 1534 } 1535 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 1536 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 1537 } 1538 break; 1539 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 1540 if (inp == NULL) { 1541 break; 1542 } 1543 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 1544 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket); 1545 } 1546 break; 1547 case SCTP_TIMER_TYPE_ADDR_WQ: 1548 sctp_handle_addr_wq(); 1549 break; 1550 case SCTP_TIMER_TYPE_SEND: 1551 if ((stcb == NULL) || (inp == NULL)) { 1552 break; 1553 } 1554 SCTP_STAT_INCR(sctps_timodata); 1555 stcb->asoc.timodata++; 1556 stcb->asoc.num_send_timers_up--; 1557 if (stcb->asoc.num_send_timers_up < 0) { 1558 stcb->asoc.num_send_timers_up = 0; 1559 } 1560 SCTP_TCB_LOCK_ASSERT(stcb); 1561 if (sctp_t3rxt_timer(inp, stcb, net)) { 1562 /* no need to unlock on tcb its gone */ 1563 1564 goto out_decr; 1565 } 1566 SCTP_TCB_LOCK_ASSERT(stcb); 1567 #ifdef SCTP_AUDITING_ENABLED 1568 sctp_auditing(4, inp, stcb, net); 1569 #endif 1570 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1571 if ((stcb->asoc.num_send_timers_up == 0) && 1572 (stcb->asoc.sent_queue_cnt > 0)) { 1573 struct sctp_tmit_chunk *chk; 1574 1575 /* 1576 * safeguard. If there on some on the sent queue 1577 * somewhere but no timers running something is 1578 * wrong... so we start a timer on the first chunk 1579 * on the send queue on whatever net it is sent to. 1580 */ 1581 chk = TAILQ_FIRST(&stcb->asoc.sent_queue); 1582 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, 1583 chk->whoTo); 1584 } 1585 break; 1586 case SCTP_TIMER_TYPE_INIT: 1587 if ((stcb == NULL) || (inp == NULL)) { 1588 break; 1589 } 1590 SCTP_STAT_INCR(sctps_timoinit); 1591 stcb->asoc.timoinit++; 1592 if (sctp_t1init_timer(inp, stcb, net)) { 1593 /* no need to unlock on tcb its gone */ 1594 goto out_decr; 1595 } 1596 /* We do output but not here */ 1597 did_output = 0; 1598 break; 1599 case SCTP_TIMER_TYPE_RECV: 1600 if ((stcb == NULL) || (inp == NULL)) { 1601 break; 1602 } 1603 SCTP_STAT_INCR(sctps_timosack); 1604 stcb->asoc.timosack++; 1605 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); 1606 #ifdef SCTP_AUDITING_ENABLED 1607 sctp_auditing(4, inp, stcb, net); 1608 #endif 1609 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED); 1610 break; 1611 case SCTP_TIMER_TYPE_SHUTDOWN: 1612 if ((stcb == NULL) || (inp == NULL)) { 1613 break; 1614 } 1615 if (sctp_shutdown_timer(inp, stcb, net)) { 1616 /* no need to unlock on tcb its gone */ 1617 goto out_decr; 1618 } 1619 SCTP_STAT_INCR(sctps_timoshutdown); 1620 stcb->asoc.timoshutdown++; 1621 #ifdef SCTP_AUDITING_ENABLED 1622 sctp_auditing(4, inp, stcb, net); 1623 #endif 1624 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED); 1625 break; 1626 case SCTP_TIMER_TYPE_HEARTBEAT: 1627 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) { 1628 break; 1629 } 1630 SCTP_STAT_INCR(sctps_timoheartbeat); 1631 stcb->asoc.timoheartbeat++; 1632 if (sctp_heartbeat_timer(inp, stcb, net)) { 1633 /* no need to unlock on tcb its gone */ 1634 goto out_decr; 1635 } 1636 #ifdef SCTP_AUDITING_ENABLED 1637 sctp_auditing(4, inp, stcb, net); 1638 #endif 1639 if (!(net->dest_state & SCTP_ADDR_NOHB)) { 1640 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); 1641 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED); 1642 } 1643 break; 1644 case SCTP_TIMER_TYPE_COOKIE: 1645 if ((stcb == NULL) || (inp == NULL)) { 1646 break; 1647 } 1648 if (sctp_cookie_timer(inp, stcb, net)) { 1649 /* no need to unlock on tcb its gone */ 1650 goto out_decr; 1651 } 1652 SCTP_STAT_INCR(sctps_timocookie); 1653 stcb->asoc.timocookie++; 1654 #ifdef SCTP_AUDITING_ENABLED 1655 sctp_auditing(4, inp, stcb, net); 1656 #endif 1657 /* 1658 * We consider T3 and Cookie timer pretty much the same with 1659 * respect to where from in chunk_output. 1660 */ 1661 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); 1662 break; 1663 case SCTP_TIMER_TYPE_NEWCOOKIE: 1664 { 1665 struct timeval tv; 1666 int i, secret; 1667 1668 if (inp == NULL) { 1669 break; 1670 } 1671 SCTP_STAT_INCR(sctps_timosecret); 1672 (void)SCTP_GETTIME_TIMEVAL(&tv); 1673 SCTP_INP_WLOCK(inp); 1674 inp->sctp_ep.time_of_secret_change = tv.tv_sec; 1675 inp->sctp_ep.last_secret_number = 1676 inp->sctp_ep.current_secret_number; 1677 inp->sctp_ep.current_secret_number++; 1678 if (inp->sctp_ep.current_secret_number >= 1679 SCTP_HOW_MANY_SECRETS) { 1680 inp->sctp_ep.current_secret_number = 0; 1681 } 1682 secret = (int)inp->sctp_ep.current_secret_number; 1683 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) { 1684 inp->sctp_ep.secret_key[secret][i] = 1685 sctp_select_initial_TSN(&inp->sctp_ep); 1686 } 1687 SCTP_INP_WUNLOCK(inp); 1688 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net); 1689 } 1690 did_output = 0; 1691 break; 1692 case SCTP_TIMER_TYPE_PATHMTURAISE: 1693 if ((stcb == NULL) || (inp == NULL)) { 1694 break; 1695 } 1696 SCTP_STAT_INCR(sctps_timopathmtu); 1697 sctp_pathmtu_timer(inp, stcb, net); 1698 did_output = 0; 1699 break; 1700 case SCTP_TIMER_TYPE_SHUTDOWNACK: 1701 if ((stcb == NULL) || (inp == NULL)) { 1702 break; 1703 } 1704 if (sctp_shutdownack_timer(inp, stcb, net)) { 1705 /* no need to unlock on tcb its gone */ 1706 goto out_decr; 1707 } 1708 SCTP_STAT_INCR(sctps_timoshutdownack); 1709 stcb->asoc.timoshutdownack++; 1710 #ifdef SCTP_AUDITING_ENABLED 1711 sctp_auditing(4, inp, stcb, net); 1712 #endif 1713 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED); 1714 break; 1715 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 1716 if ((stcb == NULL) || (inp == NULL)) { 1717 break; 1718 } 1719 SCTP_STAT_INCR(sctps_timoshutdownguard); 1720 sctp_abort_an_association(inp, stcb, NULL, SCTP_SO_NOT_LOCKED); 1721 /* no need to unlock on tcb its gone */ 1722 goto out_decr; 1723 1724 case SCTP_TIMER_TYPE_STRRESET: 1725 if ((stcb == NULL) || (inp == NULL)) { 1726 break; 1727 } 1728 if (sctp_strreset_timer(inp, stcb, net)) { 1729 /* no need to unlock on tcb its gone */ 1730 goto out_decr; 1731 } 1732 SCTP_STAT_INCR(sctps_timostrmrst); 1733 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED); 1734 break; 1735 case SCTP_TIMER_TYPE_ASCONF: 1736 if ((stcb == NULL) || (inp == NULL)) { 1737 break; 1738 } 1739 if (sctp_asconf_timer(inp, stcb, net)) { 1740 /* no need to unlock on tcb its gone */ 1741 goto out_decr; 1742 } 1743 SCTP_STAT_INCR(sctps_timoasconf); 1744 #ifdef SCTP_AUDITING_ENABLED 1745 sctp_auditing(4, inp, stcb, net); 1746 #endif 1747 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED); 1748 break; 1749 case SCTP_TIMER_TYPE_PRIM_DELETED: 1750 if ((stcb == NULL) || (inp == NULL)) { 1751 break; 1752 } 1753 sctp_delete_prim_timer(inp, stcb, net); 1754 SCTP_STAT_INCR(sctps_timodelprim); 1755 break; 1756 1757 case SCTP_TIMER_TYPE_AUTOCLOSE: 1758 if ((stcb == NULL) || (inp == NULL)) { 1759 break; 1760 } 1761 SCTP_STAT_INCR(sctps_timoautoclose); 1762 sctp_autoclose_timer(inp, stcb, net); 1763 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED); 1764 did_output = 0; 1765 break; 1766 case SCTP_TIMER_TYPE_ASOCKILL: 1767 if ((stcb == NULL) || (inp == NULL)) { 1768 break; 1769 } 1770 SCTP_STAT_INCR(sctps_timoassockill); 1771 /* Can we free it yet? */ 1772 SCTP_INP_DECR_REF(inp); 1773 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1); 1774 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1775 so = SCTP_INP_SO(inp); 1776 atomic_add_int(&stcb->asoc.refcnt, 1); 1777 SCTP_TCB_UNLOCK(stcb); 1778 SCTP_SOCKET_LOCK(so, 1); 1779 SCTP_TCB_LOCK(stcb); 1780 atomic_subtract_int(&stcb->asoc.refcnt, 1); 1781 #endif 1782 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2); 1783 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 1784 SCTP_SOCKET_UNLOCK(so, 1); 1785 #endif 1786 /* 1787 * free asoc, always unlocks (or destroy's) so prevent 1788 * duplicate unlock or unlock of a free mtx :-0 1789 */ 1790 stcb = NULL; 1791 goto out_no_decr; 1792 case SCTP_TIMER_TYPE_INPKILL: 1793 SCTP_STAT_INCR(sctps_timoinpkill); 1794 if (inp == NULL) { 1795 break; 1796 } 1797 /* 1798 * special case, take away our increment since WE are the 1799 * killer 1800 */ 1801 SCTP_INP_DECR_REF(inp); 1802 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3); 1803 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 1804 SCTP_CALLED_FROM_INPKILL_TIMER); 1805 inp = NULL; 1806 goto out_no_decr; 1807 default: 1808 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n", 1809 tmr->type); 1810 break; 1811 } 1812 #ifdef SCTP_AUDITING_ENABLED 1813 sctp_audit_log(0xF1, (uint8_t) tmr->type); 1814 if (inp) 1815 sctp_auditing(5, inp, stcb, net); 1816 #endif 1817 if ((did_output) && stcb) { 1818 /* 1819 * Now we need to clean up the control chunk chain if an 1820 * ECNE is on it. It must be marked as UNSENT again so next 1821 * call will continue to send it until such time that we get 1822 * a CWR, to remove it. It is, however, less likely that we 1823 * will find a ecn echo on the chain though. 1824 */ 1825 sctp_fix_ecn_echo(&stcb->asoc); 1826 } 1827 get_out: 1828 if (stcb) { 1829 SCTP_TCB_UNLOCK(stcb); 1830 } 1831 out_decr: 1832 if (inp) { 1833 SCTP_INP_DECR_REF(inp); 1834 } 1835 out_no_decr: 1836 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n", 1837 type); 1838 CURVNET_RESTORE(); 1839 } 1840 1841 void 1842 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 1843 struct sctp_nets *net) 1844 { 1845 uint32_t to_ticks; 1846 struct sctp_timer *tmr; 1847 1848 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) 1849 return; 1850 1851 tmr = NULL; 1852 if (stcb) { 1853 SCTP_TCB_LOCK_ASSERT(stcb); 1854 } 1855 switch (t_type) { 1856 case SCTP_TIMER_TYPE_ZERO_COPY: 1857 tmr = &inp->sctp_ep.zero_copy_timer; 1858 to_ticks = SCTP_ZERO_COPY_TICK_DELAY; 1859 break; 1860 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 1861 tmr = &inp->sctp_ep.zero_copy_sendq_timer; 1862 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY; 1863 break; 1864 case SCTP_TIMER_TYPE_ADDR_WQ: 1865 /* Only 1 tick away :-) */ 1866 tmr = &SCTP_BASE_INFO(addr_wq_timer); 1867 to_ticks = SCTP_ADDRESS_TICK_DELAY; 1868 break; 1869 case SCTP_TIMER_TYPE_SEND: 1870 /* Here we use the RTO timer */ 1871 { 1872 int rto_val; 1873 1874 if ((stcb == NULL) || (net == NULL)) { 1875 return; 1876 } 1877 tmr = &net->rxt_timer; 1878 if (net->RTO == 0) { 1879 rto_val = stcb->asoc.initial_rto; 1880 } else { 1881 rto_val = net->RTO; 1882 } 1883 to_ticks = MSEC_TO_TICKS(rto_val); 1884 } 1885 break; 1886 case SCTP_TIMER_TYPE_INIT: 1887 /* 1888 * Here we use the INIT timer default usually about 1 1889 * minute. 1890 */ 1891 if ((stcb == NULL) || (net == NULL)) { 1892 return; 1893 } 1894 tmr = &net->rxt_timer; 1895 if (net->RTO == 0) { 1896 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 1897 } else { 1898 to_ticks = MSEC_TO_TICKS(net->RTO); 1899 } 1900 break; 1901 case SCTP_TIMER_TYPE_RECV: 1902 /* 1903 * Here we use the Delayed-Ack timer value from the inp 1904 * ususually about 200ms. 1905 */ 1906 if (stcb == NULL) { 1907 return; 1908 } 1909 tmr = &stcb->asoc.dack_timer; 1910 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack); 1911 break; 1912 case SCTP_TIMER_TYPE_SHUTDOWN: 1913 /* Here we use the RTO of the destination. */ 1914 if ((stcb == NULL) || (net == NULL)) { 1915 return; 1916 } 1917 if (net->RTO == 0) { 1918 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 1919 } else { 1920 to_ticks = MSEC_TO_TICKS(net->RTO); 1921 } 1922 tmr = &net->rxt_timer; 1923 break; 1924 case SCTP_TIMER_TYPE_HEARTBEAT: 1925 /* 1926 * the net is used here so that we can add in the RTO. Even 1927 * though we use a different timer. We also add the HB timer 1928 * PLUS a random jitter. 1929 */ 1930 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) { 1931 return; 1932 } else { 1933 uint32_t rndval; 1934 uint32_t jitter; 1935 1936 if ((net->dest_state & SCTP_ADDR_NOHB) && 1937 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) { 1938 return; 1939 } 1940 if (net->RTO == 0) { 1941 to_ticks = stcb->asoc.initial_rto; 1942 } else { 1943 to_ticks = net->RTO; 1944 } 1945 rndval = sctp_select_initial_TSN(&inp->sctp_ep); 1946 jitter = rndval % to_ticks; 1947 if (jitter >= (to_ticks >> 1)) { 1948 to_ticks = to_ticks + (jitter - (to_ticks >> 1)); 1949 } else { 1950 to_ticks = to_ticks - jitter; 1951 } 1952 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) && 1953 !(net->dest_state & SCTP_ADDR_PF)) { 1954 to_ticks += net->heart_beat_delay; 1955 } 1956 /* 1957 * Now we must convert the to_ticks that are now in 1958 * ms to ticks. 1959 */ 1960 to_ticks = MSEC_TO_TICKS(to_ticks); 1961 tmr = &net->hb_timer; 1962 } 1963 break; 1964 case SCTP_TIMER_TYPE_COOKIE: 1965 /* 1966 * Here we can use the RTO timer from the network since one 1967 * RTT was compelete. If a retran happened then we will be 1968 * using the RTO initial value. 1969 */ 1970 if ((stcb == NULL) || (net == NULL)) { 1971 return; 1972 } 1973 if (net->RTO == 0) { 1974 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 1975 } else { 1976 to_ticks = MSEC_TO_TICKS(net->RTO); 1977 } 1978 tmr = &net->rxt_timer; 1979 break; 1980 case SCTP_TIMER_TYPE_NEWCOOKIE: 1981 /* 1982 * nothing needed but the endpoint here ususually about 60 1983 * minutes. 1984 */ 1985 if (inp == NULL) { 1986 return; 1987 } 1988 tmr = &inp->sctp_ep.signature_change; 1989 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE]; 1990 break; 1991 case SCTP_TIMER_TYPE_ASOCKILL: 1992 if (stcb == NULL) { 1993 return; 1994 } 1995 tmr = &stcb->asoc.strreset_timer; 1996 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT); 1997 break; 1998 case SCTP_TIMER_TYPE_INPKILL: 1999 /* 2000 * The inp is setup to die. We re-use the signature_chage 2001 * timer since that has stopped and we are in the GONE 2002 * state. 2003 */ 2004 if (inp == NULL) { 2005 return; 2006 } 2007 tmr = &inp->sctp_ep.signature_change; 2008 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT); 2009 break; 2010 case SCTP_TIMER_TYPE_PATHMTURAISE: 2011 /* 2012 * Here we use the value found in the EP for PMTU ususually 2013 * about 10 minutes. 2014 */ 2015 if ((stcb == NULL) || (inp == NULL)) { 2016 return; 2017 } 2018 if (net == NULL) { 2019 return; 2020 } 2021 if (net->dest_state & SCTP_ADDR_NO_PMTUD) { 2022 return; 2023 } 2024 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU]; 2025 tmr = &net->pmtu_timer; 2026 break; 2027 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2028 /* Here we use the RTO of the destination */ 2029 if ((stcb == NULL) || (net == NULL)) { 2030 return; 2031 } 2032 if (net->RTO == 0) { 2033 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2034 } else { 2035 to_ticks = MSEC_TO_TICKS(net->RTO); 2036 } 2037 tmr = &net->rxt_timer; 2038 break; 2039 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2040 /* 2041 * Here we use the endpoints shutdown guard timer usually 2042 * about 3 minutes. 2043 */ 2044 if ((inp == NULL) || (stcb == NULL)) { 2045 return; 2046 } 2047 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN]; 2048 tmr = &stcb->asoc.shut_guard_timer; 2049 break; 2050 case SCTP_TIMER_TYPE_STRRESET: 2051 /* 2052 * Here the timer comes from the stcb but its value is from 2053 * the net's RTO. 2054 */ 2055 if ((stcb == NULL) || (net == NULL)) { 2056 return; 2057 } 2058 if (net->RTO == 0) { 2059 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2060 } else { 2061 to_ticks = MSEC_TO_TICKS(net->RTO); 2062 } 2063 tmr = &stcb->asoc.strreset_timer; 2064 break; 2065 case SCTP_TIMER_TYPE_ASCONF: 2066 /* 2067 * Here the timer comes from the stcb but its value is from 2068 * the net's RTO. 2069 */ 2070 if ((stcb == NULL) || (net == NULL)) { 2071 return; 2072 } 2073 if (net->RTO == 0) { 2074 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2075 } else { 2076 to_ticks = MSEC_TO_TICKS(net->RTO); 2077 } 2078 tmr = &stcb->asoc.asconf_timer; 2079 break; 2080 case SCTP_TIMER_TYPE_PRIM_DELETED: 2081 if ((stcb == NULL) || (net != NULL)) { 2082 return; 2083 } 2084 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); 2085 tmr = &stcb->asoc.delete_prim_timer; 2086 break; 2087 case SCTP_TIMER_TYPE_AUTOCLOSE: 2088 if (stcb == NULL) { 2089 return; 2090 } 2091 if (stcb->asoc.sctp_autoclose_ticks == 0) { 2092 /* 2093 * Really an error since stcb is NOT set to 2094 * autoclose 2095 */ 2096 return; 2097 } 2098 to_ticks = stcb->asoc.sctp_autoclose_ticks; 2099 tmr = &stcb->asoc.autoclose_timer; 2100 break; 2101 default: 2102 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n", 2103 __FUNCTION__, t_type); 2104 return; 2105 break; 2106 } 2107 if ((to_ticks <= 0) || (tmr == NULL)) { 2108 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n", 2109 __FUNCTION__, t_type, to_ticks, (void *)tmr); 2110 return; 2111 } 2112 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { 2113 /* 2114 * we do NOT allow you to have it already running. if it is 2115 * we leave the current one up unchanged 2116 */ 2117 return; 2118 } 2119 /* At this point we can proceed */ 2120 if (t_type == SCTP_TIMER_TYPE_SEND) { 2121 stcb->asoc.num_send_timers_up++; 2122 } 2123 tmr->stopped_from = 0; 2124 tmr->type = t_type; 2125 tmr->ep = (void *)inp; 2126 tmr->tcb = (void *)stcb; 2127 tmr->net = (void *)net; 2128 tmr->self = (void *)tmr; 2129 tmr->vnet = (void *)curvnet; 2130 tmr->ticks = sctp_get_tick_count(); 2131 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr); 2132 return; 2133 } 2134 2135 void 2136 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, 2137 struct sctp_nets *net, uint32_t from) 2138 { 2139 struct sctp_timer *tmr; 2140 2141 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && 2142 (inp == NULL)) 2143 return; 2144 2145 tmr = NULL; 2146 if (stcb) { 2147 SCTP_TCB_LOCK_ASSERT(stcb); 2148 } 2149 switch (t_type) { 2150 case SCTP_TIMER_TYPE_ZERO_COPY: 2151 tmr = &inp->sctp_ep.zero_copy_timer; 2152 break; 2153 case SCTP_TIMER_TYPE_ZCOPY_SENDQ: 2154 tmr = &inp->sctp_ep.zero_copy_sendq_timer; 2155 break; 2156 case SCTP_TIMER_TYPE_ADDR_WQ: 2157 tmr = &SCTP_BASE_INFO(addr_wq_timer); 2158 break; 2159 case SCTP_TIMER_TYPE_SEND: 2160 if ((stcb == NULL) || (net == NULL)) { 2161 return; 2162 } 2163 tmr = &net->rxt_timer; 2164 break; 2165 case SCTP_TIMER_TYPE_INIT: 2166 if ((stcb == NULL) || (net == NULL)) { 2167 return; 2168 } 2169 tmr = &net->rxt_timer; 2170 break; 2171 case SCTP_TIMER_TYPE_RECV: 2172 if (stcb == NULL) { 2173 return; 2174 } 2175 tmr = &stcb->asoc.dack_timer; 2176 break; 2177 case SCTP_TIMER_TYPE_SHUTDOWN: 2178 if ((stcb == NULL) || (net == NULL)) { 2179 return; 2180 } 2181 tmr = &net->rxt_timer; 2182 break; 2183 case SCTP_TIMER_TYPE_HEARTBEAT: 2184 if ((stcb == NULL) || (net == NULL)) { 2185 return; 2186 } 2187 tmr = &net->hb_timer; 2188 break; 2189 case SCTP_TIMER_TYPE_COOKIE: 2190 if ((stcb == NULL) || (net == NULL)) { 2191 return; 2192 } 2193 tmr = &net->rxt_timer; 2194 break; 2195 case SCTP_TIMER_TYPE_NEWCOOKIE: 2196 /* nothing needed but the endpoint here */ 2197 tmr = &inp->sctp_ep.signature_change; 2198 /* 2199 * We re-use the newcookie timer for the INP kill timer. We 2200 * must assure that we do not kill it by accident. 2201 */ 2202 break; 2203 case SCTP_TIMER_TYPE_ASOCKILL: 2204 /* 2205 * Stop the asoc kill timer. 2206 */ 2207 if (stcb == NULL) { 2208 return; 2209 } 2210 tmr = &stcb->asoc.strreset_timer; 2211 break; 2212 2213 case SCTP_TIMER_TYPE_INPKILL: 2214 /* 2215 * The inp is setup to die. We re-use the signature_chage 2216 * timer since that has stopped and we are in the GONE 2217 * state. 2218 */ 2219 tmr = &inp->sctp_ep.signature_change; 2220 break; 2221 case SCTP_TIMER_TYPE_PATHMTURAISE: 2222 if ((stcb == NULL) || (net == NULL)) { 2223 return; 2224 } 2225 tmr = &net->pmtu_timer; 2226 break; 2227 case SCTP_TIMER_TYPE_SHUTDOWNACK: 2228 if ((stcb == NULL) || (net == NULL)) { 2229 return; 2230 } 2231 tmr = &net->rxt_timer; 2232 break; 2233 case SCTP_TIMER_TYPE_SHUTDOWNGUARD: 2234 if (stcb == NULL) { 2235 return; 2236 } 2237 tmr = &stcb->asoc.shut_guard_timer; 2238 break; 2239 case SCTP_TIMER_TYPE_STRRESET: 2240 if (stcb == NULL) { 2241 return; 2242 } 2243 tmr = &stcb->asoc.strreset_timer; 2244 break; 2245 case SCTP_TIMER_TYPE_ASCONF: 2246 if (stcb == NULL) { 2247 return; 2248 } 2249 tmr = &stcb->asoc.asconf_timer; 2250 break; 2251 case SCTP_TIMER_TYPE_PRIM_DELETED: 2252 if (stcb == NULL) { 2253 return; 2254 } 2255 tmr = &stcb->asoc.delete_prim_timer; 2256 break; 2257 case SCTP_TIMER_TYPE_AUTOCLOSE: 2258 if (stcb == NULL) { 2259 return; 2260 } 2261 tmr = &stcb->asoc.autoclose_timer; 2262 break; 2263 default: 2264 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n", 2265 __FUNCTION__, t_type); 2266 break; 2267 } 2268 if (tmr == NULL) { 2269 return; 2270 } 2271 if ((tmr->type != t_type) && tmr->type) { 2272 /* 2273 * Ok we have a timer that is under joint use. Cookie timer 2274 * per chance with the SEND timer. We therefore are NOT 2275 * running the timer that the caller wants stopped. So just 2276 * return. 2277 */ 2278 return; 2279 } 2280 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) { 2281 stcb->asoc.num_send_timers_up--; 2282 if (stcb->asoc.num_send_timers_up < 0) { 2283 stcb->asoc.num_send_timers_up = 0; 2284 } 2285 } 2286 tmr->self = NULL; 2287 tmr->stopped_from = from; 2288 (void)SCTP_OS_TIMER_STOP(&tmr->timer); 2289 return; 2290 } 2291 2292 uint32_t 2293 sctp_calculate_len(struct mbuf *m) 2294 { 2295 uint32_t tlen = 0; 2296 struct mbuf *at; 2297 2298 at = m; 2299 while (at) { 2300 tlen += SCTP_BUF_LEN(at); 2301 at = SCTP_BUF_NEXT(at); 2302 } 2303 return (tlen); 2304 } 2305 2306 void 2307 sctp_mtu_size_reset(struct sctp_inpcb *inp, 2308 struct sctp_association *asoc, uint32_t mtu) 2309 { 2310 /* 2311 * Reset the P-MTU size on this association, this involves changing 2312 * the asoc MTU, going through ANY chunk+overhead larger than mtu to 2313 * allow the DF flag to be cleared. 2314 */ 2315 struct sctp_tmit_chunk *chk; 2316 unsigned int eff_mtu, ovh; 2317 2318 asoc->smallest_mtu = mtu; 2319 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 2320 ovh = SCTP_MIN_OVERHEAD; 2321 } else { 2322 ovh = SCTP_MIN_V4_OVERHEAD; 2323 } 2324 eff_mtu = mtu - ovh; 2325 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) { 2326 if (chk->send_size > eff_mtu) { 2327 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 2328 } 2329 } 2330 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { 2331 if (chk->send_size > eff_mtu) { 2332 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 2333 } 2334 } 2335 } 2336 2337 2338 /* 2339 * given an association and starting time of the current RTT period return 2340 * RTO in number of msecs net should point to the current network 2341 */ 2342 2343 uint32_t 2344 sctp_calculate_rto(struct sctp_tcb *stcb, 2345 struct sctp_association *asoc, 2346 struct sctp_nets *net, 2347 struct timeval *told, 2348 int safe, int rtt_from_sack) 2349 { 2350 /*- 2351 * given an association and the starting time of the current RTT 2352 * period (in value1/value2) return RTO in number of msecs. 2353 */ 2354 int32_t rtt; /* RTT in ms */ 2355 uint32_t new_rto; 2356 int first_measure = 0; 2357 struct timeval now, then, *old; 2358 2359 /* Copy it out for sparc64 */ 2360 if (safe == sctp_align_unsafe_makecopy) { 2361 old = &then; 2362 memcpy(&then, told, sizeof(struct timeval)); 2363 } else if (safe == sctp_align_safe_nocopy) { 2364 old = told; 2365 } else { 2366 /* error */ 2367 SCTP_PRINTF("Huh, bad rto calc call\n"); 2368 return (0); 2369 } 2370 /************************/ 2371 /* 1. calculate new RTT */ 2372 /************************/ 2373 /* get the current time */ 2374 if (stcb->asoc.use_precise_time) { 2375 (void)SCTP_GETPTIME_TIMEVAL(&now); 2376 } else { 2377 (void)SCTP_GETTIME_TIMEVAL(&now); 2378 } 2379 timevalsub(&now, old); 2380 /* store the current RTT in us */ 2381 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec + 2382 (uint64_t) now.tv_usec; 2383 2384 /* computer rtt in ms */ 2385 rtt = net->rtt / 1000; 2386 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) { 2387 /* 2388 * Tell the CC module that a new update has just occurred 2389 * from a sack 2390 */ 2391 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now); 2392 } 2393 /* 2394 * Do we need to determine the lan? We do this only on sacks i.e. 2395 * RTT being determined from data not non-data (HB/INIT->INITACK). 2396 */ 2397 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) && 2398 (net->lan_type == SCTP_LAN_UNKNOWN)) { 2399 if (net->rtt > SCTP_LOCAL_LAN_RTT) { 2400 net->lan_type = SCTP_LAN_INTERNET; 2401 } else { 2402 net->lan_type = SCTP_LAN_LOCAL; 2403 } 2404 } 2405 /***************************/ 2406 /* 2. update RTTVAR & SRTT */ 2407 /***************************/ 2408 /*- 2409 * Compute the scaled average lastsa and the 2410 * scaled variance lastsv as described in van Jacobson 2411 * Paper "Congestion Avoidance and Control", Annex A. 2412 * 2413 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt 2414 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar 2415 */ 2416 if (net->RTO_measured) { 2417 rtt -= (net->lastsa >> SCTP_RTT_SHIFT); 2418 net->lastsa += rtt; 2419 if (rtt < 0) { 2420 rtt = -rtt; 2421 } 2422 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT); 2423 net->lastsv += rtt; 2424 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { 2425 rto_logging(net, SCTP_LOG_RTTVAR); 2426 } 2427 } else { 2428 /* First RTO measurment */ 2429 net->RTO_measured = 1; 2430 first_measure = 1; 2431 net->lastsa = rtt << SCTP_RTT_SHIFT; 2432 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT; 2433 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { 2434 rto_logging(net, SCTP_LOG_INITIAL_RTT); 2435 } 2436 } 2437 if (net->lastsv == 0) { 2438 net->lastsv = SCTP_CLOCK_GRANULARITY; 2439 } 2440 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv; 2441 if ((new_rto > SCTP_SAT_NETWORK_MIN) && 2442 (stcb->asoc.sat_network_lockout == 0)) { 2443 stcb->asoc.sat_network = 1; 2444 } else if ((!first_measure) && stcb->asoc.sat_network) { 2445 stcb->asoc.sat_network = 0; 2446 stcb->asoc.sat_network_lockout = 1; 2447 } 2448 /* bound it, per C6/C7 in Section 5.3.1 */ 2449 if (new_rto < stcb->asoc.minrto) { 2450 new_rto = stcb->asoc.minrto; 2451 } 2452 if (new_rto > stcb->asoc.maxrto) { 2453 new_rto = stcb->asoc.maxrto; 2454 } 2455 /* we are now returning the RTO */ 2456 return (new_rto); 2457 } 2458 2459 /* 2460 * return a pointer to a contiguous piece of data from the given mbuf chain 2461 * starting at 'off' for 'len' bytes. If the desired piece spans more than 2462 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size 2463 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain. 2464 */ 2465 caddr_t 2466 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr) 2467 { 2468 uint32_t count; 2469 uint8_t *ptr; 2470 2471 ptr = in_ptr; 2472 if ((off < 0) || (len <= 0)) 2473 return (NULL); 2474 2475 /* find the desired start location */ 2476 while ((m != NULL) && (off > 0)) { 2477 if (off < SCTP_BUF_LEN(m)) 2478 break; 2479 off -= SCTP_BUF_LEN(m); 2480 m = SCTP_BUF_NEXT(m); 2481 } 2482 if (m == NULL) 2483 return (NULL); 2484 2485 /* is the current mbuf large enough (eg. contiguous)? */ 2486 if ((SCTP_BUF_LEN(m) - off) >= len) { 2487 return (mtod(m, caddr_t)+off); 2488 } else { 2489 /* else, it spans more than one mbuf, so save a temp copy... */ 2490 while ((m != NULL) && (len > 0)) { 2491 count = min(SCTP_BUF_LEN(m) - off, len); 2492 bcopy(mtod(m, caddr_t)+off, ptr, count); 2493 len -= count; 2494 ptr += count; 2495 off = 0; 2496 m = SCTP_BUF_NEXT(m); 2497 } 2498 if ((m == NULL) && (len > 0)) 2499 return (NULL); 2500 else 2501 return ((caddr_t)in_ptr); 2502 } 2503 } 2504 2505 2506 2507 struct sctp_paramhdr * 2508 sctp_get_next_param(struct mbuf *m, 2509 int offset, 2510 struct sctp_paramhdr *pull, 2511 int pull_limit) 2512 { 2513 /* This just provides a typed signature to Peter's Pull routine */ 2514 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit, 2515 (uint8_t *) pull)); 2516 } 2517 2518 2519 int 2520 sctp_add_pad_tombuf(struct mbuf *m, int padlen) 2521 { 2522 /* 2523 * add padlen bytes of 0 filled padding to the end of the mbuf. If 2524 * padlen is > 3 this routine will fail. 2525 */ 2526 uint8_t *dp; 2527 int i; 2528 2529 if (padlen > 3) { 2530 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 2531 return (ENOBUFS); 2532 } 2533 if (padlen <= M_TRAILINGSPACE(m)) { 2534 /* 2535 * The easy way. We hope the majority of the time we hit 2536 * here :) 2537 */ 2538 dp = (uint8_t *) (mtod(m, caddr_t)+SCTP_BUF_LEN(m)); 2539 SCTP_BUF_LEN(m) += padlen; 2540 } else { 2541 /* Hard way we must grow the mbuf */ 2542 struct mbuf *tmp; 2543 2544 tmp = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA); 2545 if (tmp == NULL) { 2546 /* Out of space GAK! we are in big trouble. */ 2547 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 2548 return (ENOBUFS); 2549 } 2550 /* setup and insert in middle */ 2551 SCTP_BUF_LEN(tmp) = padlen; 2552 SCTP_BUF_NEXT(tmp) = NULL; 2553 SCTP_BUF_NEXT(m) = tmp; 2554 dp = mtod(tmp, uint8_t *); 2555 } 2556 /* zero out the pad */ 2557 for (i = 0; i < padlen; i++) { 2558 *dp = 0; 2559 dp++; 2560 } 2561 return (0); 2562 } 2563 2564 int 2565 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf) 2566 { 2567 /* find the last mbuf in chain and pad it */ 2568 struct mbuf *m_at; 2569 2570 if (last_mbuf) { 2571 return (sctp_add_pad_tombuf(last_mbuf, padval)); 2572 } else { 2573 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) { 2574 if (SCTP_BUF_NEXT(m_at) == NULL) { 2575 return (sctp_add_pad_tombuf(m_at, padval)); 2576 } 2577 } 2578 } 2579 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT); 2580 return (EFAULT); 2581 } 2582 2583 static void 2584 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb, 2585 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked 2586 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2587 SCTP_UNUSED 2588 #endif 2589 ) 2590 { 2591 struct mbuf *m_notify; 2592 struct sctp_assoc_change *sac; 2593 struct sctp_queued_to_read *control; 2594 size_t notif_len, abort_len; 2595 unsigned int i; 2596 2597 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2598 struct socket *so; 2599 2600 #endif 2601 2602 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) { 2603 notif_len = sizeof(struct sctp_assoc_change); 2604 if (abort != NULL) { 2605 abort_len = htons(abort->ch.chunk_length); 2606 } else { 2607 abort_len = 0; 2608 } 2609 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { 2610 notif_len += SCTP_ASSOC_SUPPORTS_MAX; 2611 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { 2612 notif_len += abort_len; 2613 } 2614 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 2615 if (m_notify == NULL) { 2616 /* Retry with smaller value. */ 2617 notif_len = sizeof(struct sctp_assoc_change); 2618 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 2619 if (m_notify == NULL) { 2620 goto set_error; 2621 } 2622 } 2623 SCTP_BUF_NEXT(m_notify) = NULL; 2624 sac = mtod(m_notify, struct sctp_assoc_change *); 2625 sac->sac_type = SCTP_ASSOC_CHANGE; 2626 sac->sac_flags = 0; 2627 sac->sac_length = sizeof(struct sctp_assoc_change); 2628 sac->sac_state = state; 2629 sac->sac_error = error; 2630 /* XXX verify these stream counts */ 2631 sac->sac_outbound_streams = stcb->asoc.streamoutcnt; 2632 sac->sac_inbound_streams = stcb->asoc.streamincnt; 2633 sac->sac_assoc_id = sctp_get_associd(stcb); 2634 if (notif_len > sizeof(struct sctp_assoc_change)) { 2635 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { 2636 i = 0; 2637 if (stcb->asoc.peer_supports_prsctp) { 2638 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR; 2639 } 2640 if (stcb->asoc.peer_supports_auth) { 2641 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH; 2642 } 2643 if (stcb->asoc.peer_supports_asconf) { 2644 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF; 2645 } 2646 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF; 2647 if (stcb->asoc.peer_supports_strreset) { 2648 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG; 2649 } 2650 sac->sac_length += i; 2651 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { 2652 memcpy(sac->sac_info, abort, abort_len); 2653 sac->sac_length += abort_len; 2654 } 2655 } 2656 SCTP_BUF_LEN(m_notify) = sac->sac_length; 2657 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 2658 0, 0, stcb->asoc.context, 0, 0, 0, 2659 m_notify); 2660 if (control != NULL) { 2661 control->length = SCTP_BUF_LEN(m_notify); 2662 /* not that we need this */ 2663 control->tail_mbuf = m_notify; 2664 control->spec_flags = M_NOTIFICATION; 2665 sctp_add_to_readq(stcb->sctp_ep, stcb, 2666 control, 2667 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, 2668 so_locked); 2669 } else { 2670 sctp_m_freem(m_notify); 2671 } 2672 } 2673 /* 2674 * For 1-to-1 style sockets, we send up and error when an ABORT 2675 * comes in. 2676 */ 2677 set_error: 2678 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 2679 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 2680 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { 2681 if (from_peer) { 2682 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) { 2683 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED); 2684 stcb->sctp_socket->so_error = ECONNREFUSED; 2685 } else { 2686 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 2687 stcb->sctp_socket->so_error = ECONNRESET; 2688 } 2689 } else { 2690 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED); 2691 stcb->sctp_socket->so_error = ECONNABORTED; 2692 } 2693 } 2694 /* Wake ANY sleepers */ 2695 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2696 so = SCTP_INP_SO(stcb->sctp_ep); 2697 if (!so_locked) { 2698 atomic_add_int(&stcb->asoc.refcnt, 1); 2699 SCTP_TCB_UNLOCK(stcb); 2700 SCTP_SOCKET_LOCK(so, 1); 2701 SCTP_TCB_LOCK(stcb); 2702 atomic_subtract_int(&stcb->asoc.refcnt, 1); 2703 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 2704 SCTP_SOCKET_UNLOCK(so, 1); 2705 return; 2706 } 2707 } 2708 #endif 2709 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 2710 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && 2711 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { 2712 socantrcvmore(stcb->sctp_socket); 2713 } 2714 sorwakeup(stcb->sctp_socket); 2715 sowwakeup(stcb->sctp_socket); 2716 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 2717 if (!so_locked) { 2718 SCTP_SOCKET_UNLOCK(so, 1); 2719 } 2720 #endif 2721 } 2722 2723 static void 2724 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state, 2725 struct sockaddr *sa, uint32_t error) 2726 { 2727 struct mbuf *m_notify; 2728 struct sctp_paddr_change *spc; 2729 struct sctp_queued_to_read *control; 2730 2731 if ((stcb == NULL) || 2732 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) { 2733 /* event not enabled */ 2734 return; 2735 } 2736 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA); 2737 if (m_notify == NULL) 2738 return; 2739 SCTP_BUF_LEN(m_notify) = 0; 2740 spc = mtod(m_notify, struct sctp_paddr_change *); 2741 spc->spc_type = SCTP_PEER_ADDR_CHANGE; 2742 spc->spc_flags = 0; 2743 spc->spc_length = sizeof(struct sctp_paddr_change); 2744 switch (sa->sa_family) { 2745 #ifdef INET 2746 case AF_INET: 2747 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); 2748 break; 2749 #endif 2750 #ifdef INET6 2751 case AF_INET6: 2752 { 2753 struct sockaddr_in6 *sin6; 2754 2755 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6)); 2756 2757 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr; 2758 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) { 2759 if (sin6->sin6_scope_id == 0) { 2760 /* recover scope_id for user */ 2761 (void)sa6_recoverscope(sin6); 2762 } else { 2763 /* clear embedded scope_id for user */ 2764 in6_clearscope(&sin6->sin6_addr); 2765 } 2766 } 2767 break; 2768 } 2769 #endif 2770 default: 2771 /* TSNH */ 2772 break; 2773 } 2774 spc->spc_state = state; 2775 spc->spc_error = error; 2776 spc->spc_assoc_id = sctp_get_associd(stcb); 2777 2778 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change); 2779 SCTP_BUF_NEXT(m_notify) = NULL; 2780 2781 /* append to socket */ 2782 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 2783 0, 0, stcb->asoc.context, 0, 0, 0, 2784 m_notify); 2785 if (control == NULL) { 2786 /* no memory */ 2787 sctp_m_freem(m_notify); 2788 return; 2789 } 2790 control->length = SCTP_BUF_LEN(m_notify); 2791 control->spec_flags = M_NOTIFICATION; 2792 /* not that we need this */ 2793 control->tail_mbuf = m_notify; 2794 sctp_add_to_readq(stcb->sctp_ep, stcb, 2795 control, 2796 &stcb->sctp_socket->so_rcv, 1, 2797 SCTP_READ_LOCK_NOT_HELD, 2798 SCTP_SO_NOT_LOCKED); 2799 } 2800 2801 2802 static void 2803 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error, 2804 struct sctp_tmit_chunk *chk, int so_locked 2805 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2806 SCTP_UNUSED 2807 #endif 2808 ) 2809 { 2810 struct mbuf *m_notify; 2811 struct sctp_send_failed *ssf; 2812 struct sctp_send_failed_event *ssfe; 2813 struct sctp_queued_to_read *control; 2814 int length; 2815 2816 if ((stcb == NULL) || 2817 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && 2818 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { 2819 /* event not enabled */ 2820 return; 2821 } 2822 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 2823 length = sizeof(struct sctp_send_failed_event); 2824 } else { 2825 length = sizeof(struct sctp_send_failed); 2826 } 2827 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA); 2828 if (m_notify == NULL) 2829 /* no space left */ 2830 return; 2831 length += chk->send_size; 2832 length -= sizeof(struct sctp_data_chunk); 2833 SCTP_BUF_LEN(m_notify) = 0; 2834 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 2835 ssfe = mtod(m_notify, struct sctp_send_failed_event *); 2836 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; 2837 if (sent) { 2838 ssfe->ssfe_flags = SCTP_DATA_SENT; 2839 } else { 2840 ssfe->ssfe_flags = SCTP_DATA_UNSENT; 2841 } 2842 ssfe->ssfe_length = length; 2843 ssfe->ssfe_error = error; 2844 /* not exactly what the user sent in, but should be close :) */ 2845 bzero(&ssfe->ssfe_info, sizeof(ssfe->ssfe_info)); 2846 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number; 2847 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags; 2848 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype; 2849 ssfe->ssfe_info.snd_context = chk->rec.data.context; 2850 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); 2851 ssfe->ssfe_assoc_id = sctp_get_associd(stcb); 2852 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event); 2853 } else { 2854 ssf = mtod(m_notify, struct sctp_send_failed *); 2855 ssf->ssf_type = SCTP_SEND_FAILED; 2856 if (sent) { 2857 ssf->ssf_flags = SCTP_DATA_SENT; 2858 } else { 2859 ssf->ssf_flags = SCTP_DATA_UNSENT; 2860 } 2861 ssf->ssf_length = length; 2862 ssf->ssf_error = error; 2863 /* not exactly what the user sent in, but should be close :) */ 2864 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info)); 2865 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number; 2866 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq; 2867 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags; 2868 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype; 2869 ssf->ssf_info.sinfo_context = chk->rec.data.context; 2870 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 2871 ssf->ssf_assoc_id = sctp_get_associd(stcb); 2872 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed); 2873 } 2874 if (chk->data) { 2875 /* 2876 * trim off the sctp chunk header(it should be there) 2877 */ 2878 if (chk->send_size >= sizeof(struct sctp_data_chunk)) { 2879 m_adj(chk->data, sizeof(struct sctp_data_chunk)); 2880 sctp_mbuf_crush(chk->data); 2881 chk->send_size -= sizeof(struct sctp_data_chunk); 2882 } 2883 } 2884 SCTP_BUF_NEXT(m_notify) = chk->data; 2885 /* Steal off the mbuf */ 2886 chk->data = NULL; 2887 /* 2888 * For this case, we check the actual socket buffer, since the assoc 2889 * is going away we don't want to overfill the socket buffer for a 2890 * non-reader 2891 */ 2892 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 2893 sctp_m_freem(m_notify); 2894 return; 2895 } 2896 /* append to socket */ 2897 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 2898 0, 0, stcb->asoc.context, 0, 0, 0, 2899 m_notify); 2900 if (control == NULL) { 2901 /* no memory */ 2902 sctp_m_freem(m_notify); 2903 return; 2904 } 2905 control->spec_flags = M_NOTIFICATION; 2906 sctp_add_to_readq(stcb->sctp_ep, stcb, 2907 control, 2908 &stcb->sctp_socket->so_rcv, 1, 2909 SCTP_READ_LOCK_NOT_HELD, 2910 so_locked); 2911 } 2912 2913 2914 static void 2915 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error, 2916 struct sctp_stream_queue_pending *sp, int so_locked 2917 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 2918 SCTP_UNUSED 2919 #endif 2920 ) 2921 { 2922 struct mbuf *m_notify; 2923 struct sctp_send_failed *ssf; 2924 struct sctp_send_failed_event *ssfe; 2925 struct sctp_queued_to_read *control; 2926 int length; 2927 2928 if ((stcb == NULL) || 2929 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && 2930 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { 2931 /* event not enabled */ 2932 return; 2933 } 2934 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 2935 length = sizeof(struct sctp_send_failed_event); 2936 } else { 2937 length = sizeof(struct sctp_send_failed); 2938 } 2939 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA); 2940 if (m_notify == NULL) { 2941 /* no space left */ 2942 return; 2943 } 2944 length += sp->length; 2945 SCTP_BUF_LEN(m_notify) = 0; 2946 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { 2947 ssfe = mtod(m_notify, struct sctp_send_failed_event *); 2948 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; 2949 ssfe->ssfe_flags = SCTP_DATA_UNSENT; 2950 ssfe->ssfe_length = length; 2951 ssfe->ssfe_error = error; 2952 /* not exactly what the user sent in, but should be close :) */ 2953 bzero(&ssfe->ssfe_info, sizeof(ssfe->ssfe_info)); 2954 ssfe->ssfe_info.snd_sid = sp->stream; 2955 if (sp->some_taken) { 2956 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG; 2957 } else { 2958 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG; 2959 } 2960 ssfe->ssfe_info.snd_ppid = sp->ppid; 2961 ssfe->ssfe_info.snd_context = sp->context; 2962 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); 2963 ssfe->ssfe_assoc_id = sctp_get_associd(stcb); 2964 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event); 2965 } else { 2966 ssf = mtod(m_notify, struct sctp_send_failed *); 2967 ssf->ssf_type = SCTP_SEND_FAILED; 2968 ssf->ssf_flags = SCTP_DATA_UNSENT; 2969 ssf->ssf_length = length; 2970 ssf->ssf_error = error; 2971 /* not exactly what the user sent in, but should be close :) */ 2972 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info)); 2973 ssf->ssf_info.sinfo_stream = sp->stream; 2974 ssf->ssf_info.sinfo_ssn = 0; 2975 if (sp->some_taken) { 2976 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG; 2977 } else { 2978 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG; 2979 } 2980 ssf->ssf_info.sinfo_ppid = sp->ppid; 2981 ssf->ssf_info.sinfo_context = sp->context; 2982 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); 2983 ssf->ssf_assoc_id = sctp_get_associd(stcb); 2984 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed); 2985 } 2986 SCTP_BUF_NEXT(m_notify) = sp->data; 2987 2988 /* Steal off the mbuf */ 2989 sp->data = NULL; 2990 /* 2991 * For this case, we check the actual socket buffer, since the assoc 2992 * is going away we don't want to overfill the socket buffer for a 2993 * non-reader 2994 */ 2995 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 2996 sctp_m_freem(m_notify); 2997 return; 2998 } 2999 /* append to socket */ 3000 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3001 0, 0, stcb->asoc.context, 0, 0, 0, 3002 m_notify); 3003 if (control == NULL) { 3004 /* no memory */ 3005 sctp_m_freem(m_notify); 3006 return; 3007 } 3008 control->spec_flags = M_NOTIFICATION; 3009 sctp_add_to_readq(stcb->sctp_ep, stcb, 3010 control, 3011 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); 3012 } 3013 3014 3015 3016 static void 3017 sctp_notify_adaptation_layer(struct sctp_tcb *stcb) 3018 { 3019 struct mbuf *m_notify; 3020 struct sctp_adaptation_event *sai; 3021 struct sctp_queued_to_read *control; 3022 3023 if ((stcb == NULL) || 3024 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) { 3025 /* event not enabled */ 3026 return; 3027 } 3028 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA); 3029 if (m_notify == NULL) 3030 /* no space left */ 3031 return; 3032 SCTP_BUF_LEN(m_notify) = 0; 3033 sai = mtod(m_notify, struct sctp_adaptation_event *); 3034 sai->sai_type = SCTP_ADAPTATION_INDICATION; 3035 sai->sai_flags = 0; 3036 sai->sai_length = sizeof(struct sctp_adaptation_event); 3037 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation; 3038 sai->sai_assoc_id = sctp_get_associd(stcb); 3039 3040 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event); 3041 SCTP_BUF_NEXT(m_notify) = NULL; 3042 3043 /* append to socket */ 3044 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3045 0, 0, stcb->asoc.context, 0, 0, 0, 3046 m_notify); 3047 if (control == NULL) { 3048 /* no memory */ 3049 sctp_m_freem(m_notify); 3050 return; 3051 } 3052 control->length = SCTP_BUF_LEN(m_notify); 3053 control->spec_flags = M_NOTIFICATION; 3054 /* not that we need this */ 3055 control->tail_mbuf = m_notify; 3056 sctp_add_to_readq(stcb->sctp_ep, stcb, 3057 control, 3058 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3059 } 3060 3061 /* This always must be called with the read-queue LOCKED in the INP */ 3062 static void 3063 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error, 3064 uint32_t val, int so_locked 3065 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3066 SCTP_UNUSED 3067 #endif 3068 ) 3069 { 3070 struct mbuf *m_notify; 3071 struct sctp_pdapi_event *pdapi; 3072 struct sctp_queued_to_read *control; 3073 struct sockbuf *sb; 3074 3075 if ((stcb == NULL) || 3076 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) { 3077 /* event not enabled */ 3078 return; 3079 } 3080 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { 3081 return; 3082 } 3083 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA); 3084 if (m_notify == NULL) 3085 /* no space left */ 3086 return; 3087 SCTP_BUF_LEN(m_notify) = 0; 3088 pdapi = mtod(m_notify, struct sctp_pdapi_event *); 3089 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT; 3090 pdapi->pdapi_flags = 0; 3091 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event); 3092 pdapi->pdapi_indication = error; 3093 pdapi->pdapi_stream = (val >> 16); 3094 pdapi->pdapi_seq = (val & 0x0000ffff); 3095 pdapi->pdapi_assoc_id = sctp_get_associd(stcb); 3096 3097 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event); 3098 SCTP_BUF_NEXT(m_notify) = NULL; 3099 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3100 0, 0, stcb->asoc.context, 0, 0, 0, 3101 m_notify); 3102 if (control == NULL) { 3103 /* no memory */ 3104 sctp_m_freem(m_notify); 3105 return; 3106 } 3107 control->spec_flags = M_NOTIFICATION; 3108 control->length = SCTP_BUF_LEN(m_notify); 3109 /* not that we need this */ 3110 control->tail_mbuf = m_notify; 3111 control->held_length = 0; 3112 control->length = 0; 3113 sb = &stcb->sctp_socket->so_rcv; 3114 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 3115 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify)); 3116 } 3117 sctp_sballoc(stcb, sb, m_notify); 3118 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 3119 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 3120 } 3121 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify)); 3122 control->end_added = 1; 3123 if (stcb->asoc.control_pdapi) 3124 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next); 3125 else { 3126 /* we really should not see this case */ 3127 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next); 3128 } 3129 if (stcb->sctp_ep && stcb->sctp_socket) { 3130 /* This should always be the case */ 3131 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3132 struct socket *so; 3133 3134 so = SCTP_INP_SO(stcb->sctp_ep); 3135 if (!so_locked) { 3136 atomic_add_int(&stcb->asoc.refcnt, 1); 3137 SCTP_TCB_UNLOCK(stcb); 3138 SCTP_SOCKET_LOCK(so, 1); 3139 SCTP_TCB_LOCK(stcb); 3140 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3141 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 3142 SCTP_SOCKET_UNLOCK(so, 1); 3143 return; 3144 } 3145 } 3146 #endif 3147 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); 3148 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3149 if (!so_locked) { 3150 SCTP_SOCKET_UNLOCK(so, 1); 3151 } 3152 #endif 3153 } 3154 } 3155 3156 static void 3157 sctp_notify_shutdown_event(struct sctp_tcb *stcb) 3158 { 3159 struct mbuf *m_notify; 3160 struct sctp_shutdown_event *sse; 3161 struct sctp_queued_to_read *control; 3162 3163 /* 3164 * For TCP model AND UDP connected sockets we will send an error up 3165 * when an SHUTDOWN completes 3166 */ 3167 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 3168 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 3169 /* mark socket closed for read/write and wakeup! */ 3170 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3171 struct socket *so; 3172 3173 so = SCTP_INP_SO(stcb->sctp_ep); 3174 atomic_add_int(&stcb->asoc.refcnt, 1); 3175 SCTP_TCB_UNLOCK(stcb); 3176 SCTP_SOCKET_LOCK(so, 1); 3177 SCTP_TCB_LOCK(stcb); 3178 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3179 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 3180 SCTP_SOCKET_UNLOCK(so, 1); 3181 return; 3182 } 3183 #endif 3184 socantsendmore(stcb->sctp_socket); 3185 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3186 SCTP_SOCKET_UNLOCK(so, 1); 3187 #endif 3188 } 3189 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) { 3190 /* event not enabled */ 3191 return; 3192 } 3193 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA); 3194 if (m_notify == NULL) 3195 /* no space left */ 3196 return; 3197 sse = mtod(m_notify, struct sctp_shutdown_event *); 3198 sse->sse_type = SCTP_SHUTDOWN_EVENT; 3199 sse->sse_flags = 0; 3200 sse->sse_length = sizeof(struct sctp_shutdown_event); 3201 sse->sse_assoc_id = sctp_get_associd(stcb); 3202 3203 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event); 3204 SCTP_BUF_NEXT(m_notify) = NULL; 3205 3206 /* append to socket */ 3207 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3208 0, 0, stcb->asoc.context, 0, 0, 0, 3209 m_notify); 3210 if (control == NULL) { 3211 /* no memory */ 3212 sctp_m_freem(m_notify); 3213 return; 3214 } 3215 control->spec_flags = M_NOTIFICATION; 3216 control->length = SCTP_BUF_LEN(m_notify); 3217 /* not that we need this */ 3218 control->tail_mbuf = m_notify; 3219 sctp_add_to_readq(stcb->sctp_ep, stcb, 3220 control, 3221 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3222 } 3223 3224 static void 3225 sctp_notify_sender_dry_event(struct sctp_tcb *stcb, 3226 int so_locked 3227 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3228 SCTP_UNUSED 3229 #endif 3230 ) 3231 { 3232 struct mbuf *m_notify; 3233 struct sctp_sender_dry_event *event; 3234 struct sctp_queued_to_read *control; 3235 3236 if ((stcb == NULL) || 3237 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) { 3238 /* event not enabled */ 3239 return; 3240 } 3241 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA); 3242 if (m_notify == NULL) { 3243 /* no space left */ 3244 return; 3245 } 3246 SCTP_BUF_LEN(m_notify) = 0; 3247 event = mtod(m_notify, struct sctp_sender_dry_event *); 3248 event->sender_dry_type = SCTP_SENDER_DRY_EVENT; 3249 event->sender_dry_flags = 0; 3250 event->sender_dry_length = sizeof(struct sctp_sender_dry_event); 3251 event->sender_dry_assoc_id = sctp_get_associd(stcb); 3252 3253 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event); 3254 SCTP_BUF_NEXT(m_notify) = NULL; 3255 3256 /* append to socket */ 3257 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3258 0, 0, stcb->asoc.context, 0, 0, 0, 3259 m_notify); 3260 if (control == NULL) { 3261 /* no memory */ 3262 sctp_m_freem(m_notify); 3263 return; 3264 } 3265 control->length = SCTP_BUF_LEN(m_notify); 3266 control->spec_flags = M_NOTIFICATION; 3267 /* not that we need this */ 3268 control->tail_mbuf = m_notify; 3269 sctp_add_to_readq(stcb->sctp_ep, stcb, control, 3270 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); 3271 } 3272 3273 3274 void 3275 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag) 3276 { 3277 struct mbuf *m_notify; 3278 struct sctp_queued_to_read *control; 3279 struct sctp_stream_change_event *stradd; 3280 int len; 3281 3282 if ((stcb == NULL) || 3283 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) { 3284 /* event not enabled */ 3285 return; 3286 } 3287 if ((stcb->asoc.peer_req_out) && flag) { 3288 /* Peer made the request, don't tell the local user */ 3289 stcb->asoc.peer_req_out = 0; 3290 return; 3291 } 3292 stcb->asoc.peer_req_out = 0; 3293 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); 3294 if (m_notify == NULL) 3295 /* no space left */ 3296 return; 3297 SCTP_BUF_LEN(m_notify) = 0; 3298 len = sizeof(struct sctp_stream_change_event); 3299 if (len > M_TRAILINGSPACE(m_notify)) { 3300 /* never enough room */ 3301 sctp_m_freem(m_notify); 3302 return; 3303 } 3304 stradd = mtod(m_notify, struct sctp_stream_change_event *); 3305 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT; 3306 stradd->strchange_flags = flag; 3307 stradd->strchange_length = len; 3308 stradd->strchange_assoc_id = sctp_get_associd(stcb); 3309 stradd->strchange_instrms = numberin; 3310 stradd->strchange_outstrms = numberout; 3311 SCTP_BUF_LEN(m_notify) = len; 3312 SCTP_BUF_NEXT(m_notify) = NULL; 3313 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3314 /* no space */ 3315 sctp_m_freem(m_notify); 3316 return; 3317 } 3318 /* append to socket */ 3319 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3320 0, 0, stcb->asoc.context, 0, 0, 0, 3321 m_notify); 3322 if (control == NULL) { 3323 /* no memory */ 3324 sctp_m_freem(m_notify); 3325 return; 3326 } 3327 control->spec_flags = M_NOTIFICATION; 3328 control->length = SCTP_BUF_LEN(m_notify); 3329 /* not that we need this */ 3330 control->tail_mbuf = m_notify; 3331 sctp_add_to_readq(stcb->sctp_ep, stcb, 3332 control, 3333 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3334 } 3335 3336 void 3337 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag) 3338 { 3339 struct mbuf *m_notify; 3340 struct sctp_queued_to_read *control; 3341 struct sctp_assoc_reset_event *strasoc; 3342 int len; 3343 3344 if ((stcb == NULL) || 3345 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) { 3346 /* event not enabled */ 3347 return; 3348 } 3349 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); 3350 if (m_notify == NULL) 3351 /* no space left */ 3352 return; 3353 SCTP_BUF_LEN(m_notify) = 0; 3354 len = sizeof(struct sctp_assoc_reset_event); 3355 if (len > M_TRAILINGSPACE(m_notify)) { 3356 /* never enough room */ 3357 sctp_m_freem(m_notify); 3358 return; 3359 } 3360 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *); 3361 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT; 3362 strasoc->assocreset_flags = flag; 3363 strasoc->assocreset_length = len; 3364 strasoc->assocreset_assoc_id = sctp_get_associd(stcb); 3365 strasoc->assocreset_local_tsn = sending_tsn; 3366 strasoc->assocreset_remote_tsn = recv_tsn; 3367 SCTP_BUF_LEN(m_notify) = len; 3368 SCTP_BUF_NEXT(m_notify) = NULL; 3369 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3370 /* no space */ 3371 sctp_m_freem(m_notify); 3372 return; 3373 } 3374 /* append to socket */ 3375 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3376 0, 0, stcb->asoc.context, 0, 0, 0, 3377 m_notify); 3378 if (control == NULL) { 3379 /* no memory */ 3380 sctp_m_freem(m_notify); 3381 return; 3382 } 3383 control->spec_flags = M_NOTIFICATION; 3384 control->length = SCTP_BUF_LEN(m_notify); 3385 /* not that we need this */ 3386 control->tail_mbuf = m_notify; 3387 sctp_add_to_readq(stcb->sctp_ep, stcb, 3388 control, 3389 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3390 } 3391 3392 3393 3394 static void 3395 sctp_notify_stream_reset(struct sctp_tcb *stcb, 3396 int number_entries, uint16_t * list, int flag) 3397 { 3398 struct mbuf *m_notify; 3399 struct sctp_queued_to_read *control; 3400 struct sctp_stream_reset_event *strreset; 3401 int len; 3402 3403 if ((stcb == NULL) || 3404 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) { 3405 /* event not enabled */ 3406 return; 3407 } 3408 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); 3409 if (m_notify == NULL) 3410 /* no space left */ 3411 return; 3412 SCTP_BUF_LEN(m_notify) = 0; 3413 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t)); 3414 if (len > M_TRAILINGSPACE(m_notify)) { 3415 /* never enough room */ 3416 sctp_m_freem(m_notify); 3417 return; 3418 } 3419 strreset = mtod(m_notify, struct sctp_stream_reset_event *); 3420 strreset->strreset_type = SCTP_STREAM_RESET_EVENT; 3421 strreset->strreset_flags = flag; 3422 strreset->strreset_length = len; 3423 strreset->strreset_assoc_id = sctp_get_associd(stcb); 3424 if (number_entries) { 3425 int i; 3426 3427 for (i = 0; i < number_entries; i++) { 3428 strreset->strreset_stream_list[i] = ntohs(list[i]); 3429 } 3430 } 3431 SCTP_BUF_LEN(m_notify) = len; 3432 SCTP_BUF_NEXT(m_notify) = NULL; 3433 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { 3434 /* no space */ 3435 sctp_m_freem(m_notify); 3436 return; 3437 } 3438 /* append to socket */ 3439 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3440 0, 0, stcb->asoc.context, 0, 0, 0, 3441 m_notify); 3442 if (control == NULL) { 3443 /* no memory */ 3444 sctp_m_freem(m_notify); 3445 return; 3446 } 3447 control->spec_flags = M_NOTIFICATION; 3448 control->length = SCTP_BUF_LEN(m_notify); 3449 /* not that we need this */ 3450 control->tail_mbuf = m_notify; 3451 sctp_add_to_readq(stcb->sctp_ep, stcb, 3452 control, 3453 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3454 } 3455 3456 3457 static void 3458 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk) 3459 { 3460 struct mbuf *m_notify; 3461 struct sctp_remote_error *sre; 3462 struct sctp_queued_to_read *control; 3463 size_t notif_len, chunk_len; 3464 3465 if ((stcb == NULL) || 3466 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) { 3467 return; 3468 } 3469 if (chunk != NULL) { 3470 chunk_len = htons(chunk->ch.chunk_length); 3471 } else { 3472 chunk_len = 0; 3473 } 3474 notif_len = sizeof(struct sctp_remote_error) + chunk_len; 3475 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 3476 if (m_notify == NULL) { 3477 /* Retry with smaller value. */ 3478 notif_len = sizeof(struct sctp_remote_error); 3479 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); 3480 if (m_notify == NULL) { 3481 return; 3482 } 3483 } 3484 SCTP_BUF_NEXT(m_notify) = NULL; 3485 sre = mtod(m_notify, struct sctp_remote_error *); 3486 sre->sre_type = SCTP_REMOTE_ERROR; 3487 sre->sre_flags = 0; 3488 sre->sre_length = sizeof(struct sctp_remote_error); 3489 sre->sre_error = error; 3490 sre->sre_assoc_id = sctp_get_associd(stcb); 3491 if (notif_len > sizeof(struct sctp_remote_error)) { 3492 memcpy(sre->sre_data, chunk, chunk_len); 3493 sre->sre_length += chunk_len; 3494 } 3495 SCTP_BUF_LEN(m_notify) = sre->sre_length; 3496 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 3497 0, 0, stcb->asoc.context, 0, 0, 0, 3498 m_notify); 3499 if (control != NULL) { 3500 control->length = SCTP_BUF_LEN(m_notify); 3501 /* not that we need this */ 3502 control->tail_mbuf = m_notify; 3503 control->spec_flags = M_NOTIFICATION; 3504 sctp_add_to_readq(stcb->sctp_ep, stcb, 3505 control, 3506 &stcb->sctp_socket->so_rcv, 1, 3507 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); 3508 } else { 3509 sctp_m_freem(m_notify); 3510 } 3511 } 3512 3513 3514 void 3515 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb, 3516 uint32_t error, void *data, int so_locked 3517 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3518 SCTP_UNUSED 3519 #endif 3520 ) 3521 { 3522 if ((stcb == NULL) || 3523 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3524 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3525 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 3526 /* If the socket is gone we are out of here */ 3527 return; 3528 } 3529 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) { 3530 return; 3531 } 3532 if (stcb && ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) || 3533 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED))) { 3534 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) || 3535 (notification == SCTP_NOTIFY_INTERFACE_UP) || 3536 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) { 3537 /* Don't report these in front states */ 3538 return; 3539 } 3540 } 3541 switch (notification) { 3542 case SCTP_NOTIFY_ASSOC_UP: 3543 if (stcb->asoc.assoc_up_sent == 0) { 3544 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked); 3545 stcb->asoc.assoc_up_sent = 1; 3546 } 3547 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) { 3548 sctp_notify_adaptation_layer(stcb); 3549 } 3550 if (stcb->asoc.peer_supports_auth == 0) { 3551 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, 3552 NULL, so_locked); 3553 } 3554 break; 3555 case SCTP_NOTIFY_ASSOC_DOWN: 3556 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked); 3557 break; 3558 case SCTP_NOTIFY_INTERFACE_DOWN: 3559 { 3560 struct sctp_nets *net; 3561 3562 net = (struct sctp_nets *)data; 3563 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE, 3564 (struct sockaddr *)&net->ro._l_addr, error); 3565 break; 3566 } 3567 case SCTP_NOTIFY_INTERFACE_UP: 3568 { 3569 struct sctp_nets *net; 3570 3571 net = (struct sctp_nets *)data; 3572 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE, 3573 (struct sockaddr *)&net->ro._l_addr, error); 3574 break; 3575 } 3576 case SCTP_NOTIFY_INTERFACE_CONFIRMED: 3577 { 3578 struct sctp_nets *net; 3579 3580 net = (struct sctp_nets *)data; 3581 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED, 3582 (struct sockaddr *)&net->ro._l_addr, error); 3583 break; 3584 } 3585 case SCTP_NOTIFY_SPECIAL_SP_FAIL: 3586 sctp_notify_send_failed2(stcb, error, 3587 (struct sctp_stream_queue_pending *)data, so_locked); 3588 break; 3589 case SCTP_NOTIFY_SENT_DG_FAIL: 3590 sctp_notify_send_failed(stcb, 1, error, 3591 (struct sctp_tmit_chunk *)data, so_locked); 3592 break; 3593 case SCTP_NOTIFY_UNSENT_DG_FAIL: 3594 sctp_notify_send_failed(stcb, 0, error, 3595 (struct sctp_tmit_chunk *)data, so_locked); 3596 break; 3597 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION: 3598 { 3599 uint32_t val; 3600 3601 val = *((uint32_t *) data); 3602 3603 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked); 3604 break; 3605 } 3606 case SCTP_NOTIFY_ASSOC_LOC_ABORTED: 3607 if ((stcb) && (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) || 3608 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED))) { 3609 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked); 3610 } else { 3611 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked); 3612 } 3613 break; 3614 case SCTP_NOTIFY_ASSOC_REM_ABORTED: 3615 if ((stcb) && (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) || 3616 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED))) { 3617 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked); 3618 } else { 3619 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked); 3620 } 3621 break; 3622 case SCTP_NOTIFY_ASSOC_RESTART: 3623 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked); 3624 if (stcb->asoc.peer_supports_auth == 0) { 3625 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, 3626 NULL, so_locked); 3627 } 3628 break; 3629 case SCTP_NOTIFY_STR_RESET_SEND: 3630 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN); 3631 break; 3632 case SCTP_NOTIFY_STR_RESET_RECV: 3633 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING); 3634 break; 3635 case SCTP_NOTIFY_STR_RESET_FAILED_OUT: 3636 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), 3637 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED)); 3638 break; 3639 case SCTP_NOTIFY_STR_RESET_DENIED_OUT: 3640 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), 3641 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED)); 3642 break; 3643 case SCTP_NOTIFY_STR_RESET_FAILED_IN: 3644 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), 3645 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED)); 3646 break; 3647 case SCTP_NOTIFY_STR_RESET_DENIED_IN: 3648 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), 3649 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED)); 3650 break; 3651 case SCTP_NOTIFY_ASCONF_ADD_IP: 3652 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data, 3653 error); 3654 break; 3655 case SCTP_NOTIFY_ASCONF_DELETE_IP: 3656 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data, 3657 error); 3658 break; 3659 case SCTP_NOTIFY_ASCONF_SET_PRIMARY: 3660 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data, 3661 error); 3662 break; 3663 case SCTP_NOTIFY_PEER_SHUTDOWN: 3664 sctp_notify_shutdown_event(stcb); 3665 break; 3666 case SCTP_NOTIFY_AUTH_NEW_KEY: 3667 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error, 3668 (uint16_t) (uintptr_t) data, 3669 so_locked); 3670 break; 3671 case SCTP_NOTIFY_AUTH_FREE_KEY: 3672 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error, 3673 (uint16_t) (uintptr_t) data, 3674 so_locked); 3675 break; 3676 case SCTP_NOTIFY_NO_PEER_AUTH: 3677 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error, 3678 (uint16_t) (uintptr_t) data, 3679 so_locked); 3680 break; 3681 case SCTP_NOTIFY_SENDER_DRY: 3682 sctp_notify_sender_dry_event(stcb, so_locked); 3683 break; 3684 case SCTP_NOTIFY_REMOTE_ERROR: 3685 sctp_notify_remote_error(stcb, error, data); 3686 break; 3687 default: 3688 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n", 3689 __FUNCTION__, notification, notification); 3690 break; 3691 } /* end switch */ 3692 } 3693 3694 void 3695 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked 3696 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3697 SCTP_UNUSED 3698 #endif 3699 ) 3700 { 3701 struct sctp_association *asoc; 3702 struct sctp_stream_out *outs; 3703 struct sctp_tmit_chunk *chk, *nchk; 3704 struct sctp_stream_queue_pending *sp, *nsp; 3705 int i; 3706 3707 if (stcb == NULL) { 3708 return; 3709 } 3710 asoc = &stcb->asoc; 3711 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) { 3712 /* already being freed */ 3713 return; 3714 } 3715 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3716 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3717 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) { 3718 return; 3719 } 3720 /* now through all the gunk freeing chunks */ 3721 if (holds_lock == 0) { 3722 SCTP_TCB_SEND_LOCK(stcb); 3723 } 3724 /* sent queue SHOULD be empty */ 3725 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) { 3726 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next); 3727 asoc->sent_queue_cnt--; 3728 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) { 3729 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { 3730 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; 3731 #ifdef INVARIANTS 3732 } else { 3733 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); 3734 #endif 3735 } 3736 } 3737 if (chk->data != NULL) { 3738 sctp_free_bufspace(stcb, asoc, chk, 1); 3739 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 3740 error, chk, so_locked); 3741 if (chk->data) { 3742 sctp_m_freem(chk->data); 3743 chk->data = NULL; 3744 } 3745 } 3746 sctp_free_a_chunk(stcb, chk, so_locked); 3747 /* sa_ignore FREED_MEMORY */ 3748 } 3749 /* pending send queue SHOULD be empty */ 3750 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { 3751 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next); 3752 asoc->send_queue_cnt--; 3753 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { 3754 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; 3755 #ifdef INVARIANTS 3756 } else { 3757 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); 3758 #endif 3759 } 3760 if (chk->data != NULL) { 3761 sctp_free_bufspace(stcb, asoc, chk, 1); 3762 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 3763 error, chk, so_locked); 3764 if (chk->data) { 3765 sctp_m_freem(chk->data); 3766 chk->data = NULL; 3767 } 3768 } 3769 sctp_free_a_chunk(stcb, chk, so_locked); 3770 /* sa_ignore FREED_MEMORY */ 3771 } 3772 for (i = 0; i < asoc->streamoutcnt; i++) { 3773 /* For each stream */ 3774 outs = &asoc->strmout[i]; 3775 /* clean up any sends there */ 3776 asoc->locked_on_sending = NULL; 3777 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) { 3778 asoc->stream_queue_cnt--; 3779 TAILQ_REMOVE(&outs->outqueue, sp, next); 3780 sctp_free_spbufspace(stcb, asoc, sp); 3781 if (sp->data) { 3782 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb, 3783 error, (void *)sp, so_locked); 3784 if (sp->data) { 3785 sctp_m_freem(sp->data); 3786 sp->data = NULL; 3787 sp->tail_mbuf = NULL; 3788 sp->length = 0; 3789 } 3790 } 3791 if (sp->net) { 3792 sctp_free_remote_addr(sp->net); 3793 sp->net = NULL; 3794 } 3795 /* Free the chunk */ 3796 sctp_free_a_strmoq(stcb, sp, so_locked); 3797 /* sa_ignore FREED_MEMORY */ 3798 } 3799 } 3800 3801 if (holds_lock == 0) { 3802 SCTP_TCB_SEND_UNLOCK(stcb); 3803 } 3804 } 3805 3806 void 3807 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error, 3808 struct sctp_abort_chunk *abort, int so_locked 3809 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3810 SCTP_UNUSED 3811 #endif 3812 ) 3813 { 3814 if (stcb == NULL) { 3815 return; 3816 } 3817 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || 3818 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 3819 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) { 3820 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED; 3821 } 3822 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 3823 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3824 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { 3825 return; 3826 } 3827 /* Tell them we lost the asoc */ 3828 sctp_report_all_outbound(stcb, error, 1, so_locked); 3829 if (from_peer) { 3830 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked); 3831 } else { 3832 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked); 3833 } 3834 } 3835 3836 void 3837 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 3838 struct mbuf *m, int iphlen, 3839 struct sockaddr *src, struct sockaddr *dst, 3840 struct sctphdr *sh, struct mbuf *op_err, 3841 uint8_t use_mflowid, uint32_t mflowid, 3842 uint32_t vrf_id, uint16_t port) 3843 { 3844 uint32_t vtag; 3845 3846 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3847 struct socket *so; 3848 3849 #endif 3850 3851 vtag = 0; 3852 if (stcb != NULL) { 3853 /* We have a TCB to abort, send notification too */ 3854 vtag = stcb->asoc.peer_vtag; 3855 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED); 3856 /* get the assoc vrf id and table id */ 3857 vrf_id = stcb->asoc.vrf_id; 3858 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; 3859 } 3860 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err, 3861 use_mflowid, mflowid, 3862 vrf_id, port); 3863 if (stcb != NULL) { 3864 /* Ok, now lets free it */ 3865 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3866 so = SCTP_INP_SO(inp); 3867 atomic_add_int(&stcb->asoc.refcnt, 1); 3868 SCTP_TCB_UNLOCK(stcb); 3869 SCTP_SOCKET_LOCK(so, 1); 3870 SCTP_TCB_LOCK(stcb); 3871 atomic_subtract_int(&stcb->asoc.refcnt, 1); 3872 #endif 3873 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 3874 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || 3875 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 3876 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 3877 } 3878 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4); 3879 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3880 SCTP_SOCKET_UNLOCK(so, 1); 3881 #endif 3882 } 3883 } 3884 3885 #ifdef SCTP_ASOCLOG_OF_TSNS 3886 void 3887 sctp_print_out_track_log(struct sctp_tcb *stcb) 3888 { 3889 #ifdef NOSIY_PRINTS 3890 int i; 3891 3892 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code); 3893 SCTP_PRINTF("IN bound TSN log-aaa\n"); 3894 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) { 3895 SCTP_PRINTF("None rcvd\n"); 3896 goto none_in; 3897 } 3898 if (stcb->asoc.tsn_in_wrapped) { 3899 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) { 3900 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 3901 stcb->asoc.in_tsnlog[i].tsn, 3902 stcb->asoc.in_tsnlog[i].strm, 3903 stcb->asoc.in_tsnlog[i].seq, 3904 stcb->asoc.in_tsnlog[i].flgs, 3905 stcb->asoc.in_tsnlog[i].sz); 3906 } 3907 } 3908 if (stcb->asoc.tsn_in_at) { 3909 for (i = 0; i < stcb->asoc.tsn_in_at; i++) { 3910 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 3911 stcb->asoc.in_tsnlog[i].tsn, 3912 stcb->asoc.in_tsnlog[i].strm, 3913 stcb->asoc.in_tsnlog[i].seq, 3914 stcb->asoc.in_tsnlog[i].flgs, 3915 stcb->asoc.in_tsnlog[i].sz); 3916 } 3917 } 3918 none_in: 3919 SCTP_PRINTF("OUT bound TSN log-aaa\n"); 3920 if ((stcb->asoc.tsn_out_at == 0) && 3921 (stcb->asoc.tsn_out_wrapped == 0)) { 3922 SCTP_PRINTF("None sent\n"); 3923 } 3924 if (stcb->asoc.tsn_out_wrapped) { 3925 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) { 3926 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 3927 stcb->asoc.out_tsnlog[i].tsn, 3928 stcb->asoc.out_tsnlog[i].strm, 3929 stcb->asoc.out_tsnlog[i].seq, 3930 stcb->asoc.out_tsnlog[i].flgs, 3931 stcb->asoc.out_tsnlog[i].sz); 3932 } 3933 } 3934 if (stcb->asoc.tsn_out_at) { 3935 for (i = 0; i < stcb->asoc.tsn_out_at; i++) { 3936 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", 3937 stcb->asoc.out_tsnlog[i].tsn, 3938 stcb->asoc.out_tsnlog[i].strm, 3939 stcb->asoc.out_tsnlog[i].seq, 3940 stcb->asoc.out_tsnlog[i].flgs, 3941 stcb->asoc.out_tsnlog[i].sz); 3942 } 3943 } 3944 #endif 3945 } 3946 3947 #endif 3948 3949 void 3950 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, 3951 struct mbuf *op_err, 3952 int so_locked 3953 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 3954 SCTP_UNUSED 3955 #endif 3956 ) 3957 { 3958 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3959 struct socket *so; 3960 3961 #endif 3962 3963 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3964 so = SCTP_INP_SO(inp); 3965 #endif 3966 if (stcb == NULL) { 3967 /* Got to have a TCB */ 3968 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 3969 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) { 3970 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 3971 SCTP_CALLED_DIRECTLY_NOCMPSET); 3972 } 3973 } 3974 return; 3975 } else { 3976 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; 3977 } 3978 /* notify the ulp */ 3979 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 3980 sctp_abort_notification(stcb, 0, 0, NULL, so_locked); 3981 } 3982 /* notify the peer */ 3983 sctp_send_abort_tcb(stcb, op_err, so_locked); 3984 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 3985 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || 3986 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 3987 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 3988 } 3989 /* now free the asoc */ 3990 #ifdef SCTP_ASOCLOG_OF_TSNS 3991 sctp_print_out_track_log(stcb); 3992 #endif 3993 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 3994 if (!so_locked) { 3995 atomic_add_int(&stcb->asoc.refcnt, 1); 3996 SCTP_TCB_UNLOCK(stcb); 3997 SCTP_SOCKET_LOCK(so, 1); 3998 SCTP_TCB_LOCK(stcb); 3999 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4000 } 4001 #endif 4002 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5); 4003 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4004 if (!so_locked) { 4005 SCTP_SOCKET_UNLOCK(so, 1); 4006 } 4007 #endif 4008 } 4009 4010 void 4011 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, 4012 struct sockaddr *src, struct sockaddr *dst, 4013 struct sctphdr *sh, struct sctp_inpcb *inp, 4014 uint8_t use_mflowid, uint32_t mflowid, 4015 uint32_t vrf_id, uint16_t port) 4016 { 4017 struct sctp_chunkhdr *ch, chunk_buf; 4018 unsigned int chk_length; 4019 int contains_init_chunk; 4020 4021 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue); 4022 /* Generate a TO address for future reference */ 4023 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { 4024 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) { 4025 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 4026 SCTP_CALLED_DIRECTLY_NOCMPSET); 4027 } 4028 } 4029 contains_init_chunk = 0; 4030 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4031 sizeof(*ch), (uint8_t *) & chunk_buf); 4032 while (ch != NULL) { 4033 chk_length = ntohs(ch->chunk_length); 4034 if (chk_length < sizeof(*ch)) { 4035 /* break to abort land */ 4036 break; 4037 } 4038 switch (ch->chunk_type) { 4039 case SCTP_INIT: 4040 contains_init_chunk = 1; 4041 break; 4042 case SCTP_COOKIE_ECHO: 4043 /* We hit here only if the assoc is being freed */ 4044 return; 4045 case SCTP_PACKET_DROPPED: 4046 /* we don't respond to pkt-dropped */ 4047 return; 4048 case SCTP_ABORT_ASSOCIATION: 4049 /* we don't respond with an ABORT to an ABORT */ 4050 return; 4051 case SCTP_SHUTDOWN_COMPLETE: 4052 /* 4053 * we ignore it since we are not waiting for it and 4054 * peer is gone 4055 */ 4056 return; 4057 case SCTP_SHUTDOWN_ACK: 4058 sctp_send_shutdown_complete2(src, dst, sh, 4059 use_mflowid, mflowid, 4060 vrf_id, port); 4061 return; 4062 default: 4063 break; 4064 } 4065 offset += SCTP_SIZE32(chk_length); 4066 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4067 sizeof(*ch), (uint8_t *) & chunk_buf); 4068 } 4069 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) || 4070 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) && 4071 (contains_init_chunk == 0))) { 4072 sctp_send_abort(m, iphlen, src, dst, sh, 0, NULL, 4073 use_mflowid, mflowid, 4074 vrf_id, port); 4075 } 4076 } 4077 4078 /* 4079 * check the inbound datagram to make sure there is not an abort inside it, 4080 * if there is return 1, else return 0. 4081 */ 4082 int 4083 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill) 4084 { 4085 struct sctp_chunkhdr *ch; 4086 struct sctp_init_chunk *init_chk, chunk_buf; 4087 int offset; 4088 unsigned int chk_length; 4089 4090 offset = iphlen + sizeof(struct sctphdr); 4091 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), 4092 (uint8_t *) & chunk_buf); 4093 while (ch != NULL) { 4094 chk_length = ntohs(ch->chunk_length); 4095 if (chk_length < sizeof(*ch)) { 4096 /* packet is probably corrupt */ 4097 break; 4098 } 4099 /* we seem to be ok, is it an abort? */ 4100 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) { 4101 /* yep, tell them */ 4102 return (1); 4103 } 4104 if (ch->chunk_type == SCTP_INITIATION) { 4105 /* need to update the Vtag */ 4106 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 4107 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf); 4108 if (init_chk != NULL) { 4109 *vtagfill = ntohl(init_chk->init.initiate_tag); 4110 } 4111 } 4112 /* Nope, move to the next chunk */ 4113 offset += SCTP_SIZE32(chk_length); 4114 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, 4115 sizeof(*ch), (uint8_t *) & chunk_buf); 4116 } 4117 return (0); 4118 } 4119 4120 /* 4121 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id 4122 * set (i.e. it's 0) so, create this function to compare link local scopes 4123 */ 4124 #ifdef INET6 4125 uint32_t 4126 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2) 4127 { 4128 struct sockaddr_in6 a, b; 4129 4130 /* save copies */ 4131 a = *addr1; 4132 b = *addr2; 4133 4134 if (a.sin6_scope_id == 0) 4135 if (sa6_recoverscope(&a)) { 4136 /* can't get scope, so can't match */ 4137 return (0); 4138 } 4139 if (b.sin6_scope_id == 0) 4140 if (sa6_recoverscope(&b)) { 4141 /* can't get scope, so can't match */ 4142 return (0); 4143 } 4144 if (a.sin6_scope_id != b.sin6_scope_id) 4145 return (0); 4146 4147 return (1); 4148 } 4149 4150 /* 4151 * returns a sockaddr_in6 with embedded scope recovered and removed 4152 */ 4153 struct sockaddr_in6 * 4154 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store) 4155 { 4156 /* check and strip embedded scope junk */ 4157 if (addr->sin6_family == AF_INET6) { 4158 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) { 4159 if (addr->sin6_scope_id == 0) { 4160 *store = *addr; 4161 if (!sa6_recoverscope(store)) { 4162 /* use the recovered scope */ 4163 addr = store; 4164 } 4165 } else { 4166 /* else, return the original "to" addr */ 4167 in6_clearscope(&addr->sin6_addr); 4168 } 4169 } 4170 } 4171 return (addr); 4172 } 4173 4174 #endif 4175 4176 /* 4177 * are the two addresses the same? currently a "scopeless" check returns: 1 4178 * if same, 0 if not 4179 */ 4180 int 4181 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2) 4182 { 4183 4184 /* must be valid */ 4185 if (sa1 == NULL || sa2 == NULL) 4186 return (0); 4187 4188 /* must be the same family */ 4189 if (sa1->sa_family != sa2->sa_family) 4190 return (0); 4191 4192 switch (sa1->sa_family) { 4193 #ifdef INET6 4194 case AF_INET6: 4195 { 4196 /* IPv6 addresses */ 4197 struct sockaddr_in6 *sin6_1, *sin6_2; 4198 4199 sin6_1 = (struct sockaddr_in6 *)sa1; 4200 sin6_2 = (struct sockaddr_in6 *)sa2; 4201 return (SCTP6_ARE_ADDR_EQUAL(sin6_1, 4202 sin6_2)); 4203 } 4204 #endif 4205 #ifdef INET 4206 case AF_INET: 4207 { 4208 /* IPv4 addresses */ 4209 struct sockaddr_in *sin_1, *sin_2; 4210 4211 sin_1 = (struct sockaddr_in *)sa1; 4212 sin_2 = (struct sockaddr_in *)sa2; 4213 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr); 4214 } 4215 #endif 4216 default: 4217 /* we don't do these... */ 4218 return (0); 4219 } 4220 } 4221 4222 void 4223 sctp_print_address(struct sockaddr *sa) 4224 { 4225 #ifdef INET6 4226 char ip6buf[INET6_ADDRSTRLEN]; 4227 4228 #endif 4229 4230 switch (sa->sa_family) { 4231 #ifdef INET6 4232 case AF_INET6: 4233 { 4234 struct sockaddr_in6 *sin6; 4235 4236 sin6 = (struct sockaddr_in6 *)sa; 4237 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n", 4238 ip6_sprintf(ip6buf, &sin6->sin6_addr), 4239 ntohs(sin6->sin6_port), 4240 sin6->sin6_scope_id); 4241 break; 4242 } 4243 #endif 4244 #ifdef INET 4245 case AF_INET: 4246 { 4247 struct sockaddr_in *sin; 4248 unsigned char *p; 4249 4250 sin = (struct sockaddr_in *)sa; 4251 p = (unsigned char *)&sin->sin_addr; 4252 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n", 4253 p[0], p[1], p[2], p[3], ntohs(sin->sin_port)); 4254 break; 4255 } 4256 #endif 4257 default: 4258 SCTP_PRINTF("?\n"); 4259 break; 4260 } 4261 } 4262 4263 void 4264 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 4265 struct sctp_inpcb *new_inp, 4266 struct sctp_tcb *stcb, 4267 int waitflags) 4268 { 4269 /* 4270 * go through our old INP and pull off any control structures that 4271 * belong to stcb and move then to the new inp. 4272 */ 4273 struct socket *old_so, *new_so; 4274 struct sctp_queued_to_read *control, *nctl; 4275 struct sctp_readhead tmp_queue; 4276 struct mbuf *m; 4277 int error = 0; 4278 4279 old_so = old_inp->sctp_socket; 4280 new_so = new_inp->sctp_socket; 4281 TAILQ_INIT(&tmp_queue); 4282 error = sblock(&old_so->so_rcv, waitflags); 4283 if (error) { 4284 /* 4285 * Gak, can't get sblock, we have a problem. data will be 4286 * left stranded.. and we don't dare look at it since the 4287 * other thread may be reading something. Oh well, its a 4288 * screwed up app that does a peeloff OR a accept while 4289 * reading from the main socket... actually its only the 4290 * peeloff() case, since I think read will fail on a 4291 * listening socket.. 4292 */ 4293 return; 4294 } 4295 /* lock the socket buffers */ 4296 SCTP_INP_READ_LOCK(old_inp); 4297 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) { 4298 /* Pull off all for out target stcb */ 4299 if (control->stcb == stcb) { 4300 /* remove it we want it */ 4301 TAILQ_REMOVE(&old_inp->read_queue, control, next); 4302 TAILQ_INSERT_TAIL(&tmp_queue, control, next); 4303 m = control->data; 4304 while (m) { 4305 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4306 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 4307 } 4308 sctp_sbfree(control, stcb, &old_so->so_rcv, m); 4309 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4310 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4311 } 4312 m = SCTP_BUF_NEXT(m); 4313 } 4314 } 4315 } 4316 SCTP_INP_READ_UNLOCK(old_inp); 4317 /* Remove the sb-lock on the old socket */ 4318 4319 sbunlock(&old_so->so_rcv); 4320 /* Now we move them over to the new socket buffer */ 4321 SCTP_INP_READ_LOCK(new_inp); 4322 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) { 4323 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next); 4324 m = control->data; 4325 while (m) { 4326 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4327 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4328 } 4329 sctp_sballoc(stcb, &new_so->so_rcv, m); 4330 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4331 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4332 } 4333 m = SCTP_BUF_NEXT(m); 4334 } 4335 } 4336 SCTP_INP_READ_UNLOCK(new_inp); 4337 } 4338 4339 void 4340 sctp_add_to_readq(struct sctp_inpcb *inp, 4341 struct sctp_tcb *stcb, 4342 struct sctp_queued_to_read *control, 4343 struct sockbuf *sb, 4344 int end, 4345 int inp_read_lock_held, 4346 int so_locked 4347 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 4348 SCTP_UNUSED 4349 #endif 4350 ) 4351 { 4352 /* 4353 * Here we must place the control on the end of the socket read 4354 * queue AND increment sb_cc so that select will work properly on 4355 * read. 4356 */ 4357 struct mbuf *m, *prev = NULL; 4358 4359 if (inp == NULL) { 4360 /* Gak, TSNH!! */ 4361 #ifdef INVARIANTS 4362 panic("Gak, inp NULL on add_to_readq"); 4363 #endif 4364 return; 4365 } 4366 if (inp_read_lock_held == 0) 4367 SCTP_INP_READ_LOCK(inp); 4368 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { 4369 sctp_free_remote_addr(control->whoFrom); 4370 if (control->data) { 4371 sctp_m_freem(control->data); 4372 control->data = NULL; 4373 } 4374 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control); 4375 if (inp_read_lock_held == 0) 4376 SCTP_INP_READ_UNLOCK(inp); 4377 return; 4378 } 4379 if (!(control->spec_flags & M_NOTIFICATION)) { 4380 atomic_add_int(&inp->total_recvs, 1); 4381 if (!control->do_not_ref_stcb) { 4382 atomic_add_int(&stcb->total_recvs, 1); 4383 } 4384 } 4385 m = control->data; 4386 control->held_length = 0; 4387 control->length = 0; 4388 while (m) { 4389 if (SCTP_BUF_LEN(m) == 0) { 4390 /* Skip mbufs with NO length */ 4391 if (prev == NULL) { 4392 /* First one */ 4393 control->data = sctp_m_free(m); 4394 m = control->data; 4395 } else { 4396 SCTP_BUF_NEXT(prev) = sctp_m_free(m); 4397 m = SCTP_BUF_NEXT(prev); 4398 } 4399 if (m == NULL) { 4400 control->tail_mbuf = prev; 4401 } 4402 continue; 4403 } 4404 prev = m; 4405 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4406 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); 4407 } 4408 sctp_sballoc(stcb, sb, m); 4409 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4410 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4411 } 4412 atomic_add_int(&control->length, SCTP_BUF_LEN(m)); 4413 m = SCTP_BUF_NEXT(m); 4414 } 4415 if (prev != NULL) { 4416 control->tail_mbuf = prev; 4417 } else { 4418 /* Everything got collapsed out?? */ 4419 sctp_free_remote_addr(control->whoFrom); 4420 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control); 4421 if (inp_read_lock_held == 0) 4422 SCTP_INP_READ_UNLOCK(inp); 4423 return; 4424 } 4425 if (end) { 4426 control->end_added = 1; 4427 } 4428 TAILQ_INSERT_TAIL(&inp->read_queue, control, next); 4429 if (inp_read_lock_held == 0) 4430 SCTP_INP_READ_UNLOCK(inp); 4431 if (inp && inp->sctp_socket) { 4432 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 4433 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 4434 } else { 4435 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4436 struct socket *so; 4437 4438 so = SCTP_INP_SO(inp); 4439 if (!so_locked) { 4440 if (stcb) { 4441 atomic_add_int(&stcb->asoc.refcnt, 1); 4442 SCTP_TCB_UNLOCK(stcb); 4443 } 4444 SCTP_SOCKET_LOCK(so, 1); 4445 if (stcb) { 4446 SCTP_TCB_LOCK(stcb); 4447 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4448 } 4449 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4450 SCTP_SOCKET_UNLOCK(so, 1); 4451 return; 4452 } 4453 } 4454 #endif 4455 sctp_sorwakeup(inp, inp->sctp_socket); 4456 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4457 if (!so_locked) { 4458 SCTP_SOCKET_UNLOCK(so, 1); 4459 } 4460 #endif 4461 } 4462 } 4463 } 4464 4465 4466 int 4467 sctp_append_to_readq(struct sctp_inpcb *inp, 4468 struct sctp_tcb *stcb, 4469 struct sctp_queued_to_read *control, 4470 struct mbuf *m, 4471 int end, 4472 int ctls_cumack, 4473 struct sockbuf *sb) 4474 { 4475 /* 4476 * A partial delivery API event is underway. OR we are appending on 4477 * the reassembly queue. 4478 * 4479 * If PDAPI this means we need to add m to the end of the data. 4480 * Increase the length in the control AND increment the sb_cc. 4481 * Otherwise sb is NULL and all we need to do is put it at the end 4482 * of the mbuf chain. 4483 */ 4484 int len = 0; 4485 struct mbuf *mm, *tail = NULL, *prev = NULL; 4486 4487 if (inp) { 4488 SCTP_INP_READ_LOCK(inp); 4489 } 4490 if (control == NULL) { 4491 get_out: 4492 if (inp) { 4493 SCTP_INP_READ_UNLOCK(inp); 4494 } 4495 return (-1); 4496 } 4497 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) { 4498 SCTP_INP_READ_UNLOCK(inp); 4499 return (0); 4500 } 4501 if (control->end_added) { 4502 /* huh this one is complete? */ 4503 goto get_out; 4504 } 4505 mm = m; 4506 if (mm == NULL) { 4507 goto get_out; 4508 } 4509 while (mm) { 4510 if (SCTP_BUF_LEN(mm) == 0) { 4511 /* Skip mbufs with NO lenght */ 4512 if (prev == NULL) { 4513 /* First one */ 4514 m = sctp_m_free(mm); 4515 mm = m; 4516 } else { 4517 SCTP_BUF_NEXT(prev) = sctp_m_free(mm); 4518 mm = SCTP_BUF_NEXT(prev); 4519 } 4520 continue; 4521 } 4522 prev = mm; 4523 len += SCTP_BUF_LEN(mm); 4524 if (sb) { 4525 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4526 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm)); 4527 } 4528 sctp_sballoc(stcb, sb, mm); 4529 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 4530 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 4531 } 4532 } 4533 mm = SCTP_BUF_NEXT(mm); 4534 } 4535 if (prev) { 4536 tail = prev; 4537 } else { 4538 /* Really there should always be a prev */ 4539 if (m == NULL) { 4540 /* Huh nothing left? */ 4541 #ifdef INVARIANTS 4542 panic("Nothing left to add?"); 4543 #else 4544 goto get_out; 4545 #endif 4546 } 4547 tail = m; 4548 } 4549 if (control->tail_mbuf) { 4550 /* append */ 4551 SCTP_BUF_NEXT(control->tail_mbuf) = m; 4552 control->tail_mbuf = tail; 4553 } else { 4554 /* nothing there */ 4555 #ifdef INVARIANTS 4556 if (control->data != NULL) { 4557 panic("This should NOT happen"); 4558 } 4559 #endif 4560 control->data = m; 4561 control->tail_mbuf = tail; 4562 } 4563 atomic_add_int(&control->length, len); 4564 if (end) { 4565 /* message is complete */ 4566 if (stcb && (control == stcb->asoc.control_pdapi)) { 4567 stcb->asoc.control_pdapi = NULL; 4568 } 4569 control->held_length = 0; 4570 control->end_added = 1; 4571 } 4572 if (stcb == NULL) { 4573 control->do_not_ref_stcb = 1; 4574 } 4575 /* 4576 * When we are appending in partial delivery, the cum-ack is used 4577 * for the actual pd-api highest tsn on this mbuf. The true cum-ack 4578 * is populated in the outbound sinfo structure from the true cumack 4579 * if the association exists... 4580 */ 4581 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack; 4582 if (inp) { 4583 SCTP_INP_READ_UNLOCK(inp); 4584 } 4585 if (inp && inp->sctp_socket) { 4586 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { 4587 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); 4588 } else { 4589 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4590 struct socket *so; 4591 4592 so = SCTP_INP_SO(inp); 4593 if (stcb) { 4594 atomic_add_int(&stcb->asoc.refcnt, 1); 4595 SCTP_TCB_UNLOCK(stcb); 4596 } 4597 SCTP_SOCKET_LOCK(so, 1); 4598 if (stcb) { 4599 SCTP_TCB_LOCK(stcb); 4600 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4601 } 4602 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 4603 SCTP_SOCKET_UNLOCK(so, 1); 4604 return (0); 4605 } 4606 #endif 4607 sctp_sorwakeup(inp, inp->sctp_socket); 4608 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4609 SCTP_SOCKET_UNLOCK(so, 1); 4610 #endif 4611 } 4612 } 4613 return (0); 4614 } 4615 4616 4617 4618 /*************HOLD THIS COMMENT FOR PATCH FILE OF 4619 *************ALTERNATE ROUTING CODE 4620 */ 4621 4622 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF 4623 *************ALTERNATE ROUTING CODE 4624 */ 4625 4626 struct mbuf * 4627 sctp_generate_invmanparam(int err) 4628 { 4629 /* Return a MBUF with a invalid mandatory parameter */ 4630 struct mbuf *m; 4631 4632 m = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_NOWAIT, 1, MT_DATA); 4633 if (m) { 4634 struct sctp_paramhdr *ph; 4635 4636 SCTP_BUF_LEN(m) = sizeof(struct sctp_paramhdr); 4637 ph = mtod(m, struct sctp_paramhdr *); 4638 ph->param_length = htons(sizeof(struct sctp_paramhdr)); 4639 ph->param_type = htons(err); 4640 } 4641 return (m); 4642 } 4643 4644 #ifdef SCTP_MBCNT_LOGGING 4645 void 4646 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc, 4647 struct sctp_tmit_chunk *tp1, int chk_cnt) 4648 { 4649 if (tp1->data == NULL) { 4650 return; 4651 } 4652 asoc->chunks_on_out_queue -= chk_cnt; 4653 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) { 4654 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE, 4655 asoc->total_output_queue_size, 4656 tp1->book_size, 4657 0, 4658 tp1->mbcnt); 4659 } 4660 if (asoc->total_output_queue_size >= tp1->book_size) { 4661 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size); 4662 } else { 4663 asoc->total_output_queue_size = 0; 4664 } 4665 4666 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) || 4667 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) { 4668 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { 4669 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size; 4670 } else { 4671 stcb->sctp_socket->so_snd.sb_cc = 0; 4672 4673 } 4674 } 4675 } 4676 4677 #endif 4678 4679 int 4680 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1, 4681 uint8_t sent, int so_locked 4682 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 4683 SCTP_UNUSED 4684 #endif 4685 ) 4686 { 4687 struct sctp_stream_out *strq; 4688 struct sctp_tmit_chunk *chk = NULL, *tp2; 4689 struct sctp_stream_queue_pending *sp; 4690 uint16_t stream = 0, seq = 0; 4691 uint8_t foundeom = 0; 4692 int ret_sz = 0; 4693 int notdone; 4694 int do_wakeup_routine = 0; 4695 4696 stream = tp1->rec.data.stream_number; 4697 seq = tp1->rec.data.stream_seq; 4698 do { 4699 ret_sz += tp1->book_size; 4700 if (tp1->data != NULL) { 4701 if (tp1->sent < SCTP_DATAGRAM_RESEND) { 4702 sctp_flight_size_decrease(tp1); 4703 sctp_total_flight_decrease(stcb, tp1); 4704 } 4705 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 4706 stcb->asoc.peers_rwnd += tp1->send_size; 4707 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh); 4708 if (sent) { 4709 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); 4710 } else { 4711 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); 4712 } 4713 if (tp1->data) { 4714 sctp_m_freem(tp1->data); 4715 tp1->data = NULL; 4716 } 4717 do_wakeup_routine = 1; 4718 if (PR_SCTP_BUF_ENABLED(tp1->flags)) { 4719 stcb->asoc.sent_queue_cnt_removeable--; 4720 } 4721 } 4722 tp1->sent = SCTP_FORWARD_TSN_SKIP; 4723 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) == 4724 SCTP_DATA_NOT_FRAG) { 4725 /* not frag'ed we ae done */ 4726 notdone = 0; 4727 foundeom = 1; 4728 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 4729 /* end of frag, we are done */ 4730 notdone = 0; 4731 foundeom = 1; 4732 } else { 4733 /* 4734 * Its a begin or middle piece, we must mark all of 4735 * it 4736 */ 4737 notdone = 1; 4738 tp1 = TAILQ_NEXT(tp1, sctp_next); 4739 } 4740 } while (tp1 && notdone); 4741 if (foundeom == 0) { 4742 /* 4743 * The multi-part message was scattered across the send and 4744 * sent queue. 4745 */ 4746 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) { 4747 if ((tp1->rec.data.stream_number != stream) || 4748 (tp1->rec.data.stream_seq != seq)) { 4749 break; 4750 } 4751 /* 4752 * save to chk in case we have some on stream out 4753 * queue. If so and we have an un-transmitted one we 4754 * don't have to fudge the TSN. 4755 */ 4756 chk = tp1; 4757 ret_sz += tp1->book_size; 4758 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); 4759 if (sent) { 4760 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); 4761 } else { 4762 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); 4763 } 4764 if (tp1->data) { 4765 sctp_m_freem(tp1->data); 4766 tp1->data = NULL; 4767 } 4768 /* No flight involved here book the size to 0 */ 4769 tp1->book_size = 0; 4770 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { 4771 foundeom = 1; 4772 } 4773 do_wakeup_routine = 1; 4774 tp1->sent = SCTP_FORWARD_TSN_SKIP; 4775 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next); 4776 /* 4777 * on to the sent queue so we can wait for it to be 4778 * passed by. 4779 */ 4780 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1, 4781 sctp_next); 4782 stcb->asoc.send_queue_cnt--; 4783 stcb->asoc.sent_queue_cnt++; 4784 } 4785 } 4786 if (foundeom == 0) { 4787 /* 4788 * Still no eom found. That means there is stuff left on the 4789 * stream out queue.. yuck. 4790 */ 4791 SCTP_TCB_SEND_LOCK(stcb); 4792 strq = &stcb->asoc.strmout[stream]; 4793 sp = TAILQ_FIRST(&strq->outqueue); 4794 if (sp != NULL) { 4795 sp->discard_rest = 1; 4796 /* 4797 * We may need to put a chunk on the queue that 4798 * holds the TSN that would have been sent with the 4799 * LAST bit. 4800 */ 4801 if (chk == NULL) { 4802 /* Yep, we have to */ 4803 sctp_alloc_a_chunk(stcb, chk); 4804 if (chk == NULL) { 4805 /* 4806 * we are hosed. All we can do is 4807 * nothing.. which will cause an 4808 * abort if the peer is paying 4809 * attention. 4810 */ 4811 goto oh_well; 4812 } 4813 memset(chk, 0, sizeof(*chk)); 4814 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG; 4815 chk->sent = SCTP_FORWARD_TSN_SKIP; 4816 chk->asoc = &stcb->asoc; 4817 chk->rec.data.stream_seq = strq->next_sequence_send; 4818 chk->rec.data.stream_number = sp->stream; 4819 chk->rec.data.payloadtype = sp->ppid; 4820 chk->rec.data.context = sp->context; 4821 chk->flags = sp->act_flags; 4822 if (sp->net) 4823 chk->whoTo = sp->net; 4824 else 4825 chk->whoTo = stcb->asoc.primary_destination; 4826 atomic_add_int(&chk->whoTo->ref_count, 1); 4827 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1); 4828 stcb->asoc.pr_sctp_cnt++; 4829 chk->pr_sctp_on = 1; 4830 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next); 4831 stcb->asoc.sent_queue_cnt++; 4832 stcb->asoc.pr_sctp_cnt++; 4833 } else { 4834 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG; 4835 } 4836 strq->next_sequence_send++; 4837 oh_well: 4838 if (sp->data) { 4839 /* 4840 * Pull any data to free up the SB and allow 4841 * sender to "add more" while we will throw 4842 * away :-) 4843 */ 4844 sctp_free_spbufspace(stcb, &stcb->asoc, sp); 4845 ret_sz += sp->length; 4846 do_wakeup_routine = 1; 4847 sp->some_taken = 1; 4848 sctp_m_freem(sp->data); 4849 sp->data = NULL; 4850 sp->tail_mbuf = NULL; 4851 sp->length = 0; 4852 } 4853 } 4854 SCTP_TCB_SEND_UNLOCK(stcb); 4855 } 4856 if (do_wakeup_routine) { 4857 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4858 struct socket *so; 4859 4860 so = SCTP_INP_SO(stcb->sctp_ep); 4861 if (!so_locked) { 4862 atomic_add_int(&stcb->asoc.refcnt, 1); 4863 SCTP_TCB_UNLOCK(stcb); 4864 SCTP_SOCKET_LOCK(so, 1); 4865 SCTP_TCB_LOCK(stcb); 4866 atomic_subtract_int(&stcb->asoc.refcnt, 1); 4867 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { 4868 /* assoc was freed while we were unlocked */ 4869 SCTP_SOCKET_UNLOCK(so, 1); 4870 return (ret_sz); 4871 } 4872 } 4873 #endif 4874 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket); 4875 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 4876 if (!so_locked) { 4877 SCTP_SOCKET_UNLOCK(so, 1); 4878 } 4879 #endif 4880 } 4881 return (ret_sz); 4882 } 4883 4884 /* 4885 * checks to see if the given address, sa, is one that is currently known by 4886 * the kernel note: can't distinguish the same address on multiple interfaces 4887 * and doesn't handle multiple addresses with different zone/scope id's note: 4888 * ifa_ifwithaddr() compares the entire sockaddr struct 4889 */ 4890 struct sctp_ifa * 4891 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, 4892 int holds_lock) 4893 { 4894 struct sctp_laddr *laddr; 4895 4896 if (holds_lock == 0) { 4897 SCTP_INP_RLOCK(inp); 4898 } 4899 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 4900 if (laddr->ifa == NULL) 4901 continue; 4902 if (addr->sa_family != laddr->ifa->address.sa.sa_family) 4903 continue; 4904 #ifdef INET 4905 if (addr->sa_family == AF_INET) { 4906 if (((struct sockaddr_in *)addr)->sin_addr.s_addr == 4907 laddr->ifa->address.sin.sin_addr.s_addr) { 4908 /* found him. */ 4909 if (holds_lock == 0) { 4910 SCTP_INP_RUNLOCK(inp); 4911 } 4912 return (laddr->ifa); 4913 break; 4914 } 4915 } 4916 #endif 4917 #ifdef INET6 4918 if (addr->sa_family == AF_INET6) { 4919 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr, 4920 &laddr->ifa->address.sin6)) { 4921 /* found him. */ 4922 if (holds_lock == 0) { 4923 SCTP_INP_RUNLOCK(inp); 4924 } 4925 return (laddr->ifa); 4926 break; 4927 } 4928 } 4929 #endif 4930 } 4931 if (holds_lock == 0) { 4932 SCTP_INP_RUNLOCK(inp); 4933 } 4934 return (NULL); 4935 } 4936 4937 uint32_t 4938 sctp_get_ifa_hash_val(struct sockaddr *addr) 4939 { 4940 switch (addr->sa_family) { 4941 #ifdef INET 4942 case AF_INET: 4943 { 4944 struct sockaddr_in *sin; 4945 4946 sin = (struct sockaddr_in *)addr; 4947 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16)); 4948 } 4949 #endif 4950 #ifdef INET6 4951 case AF_INET6: 4952 { 4953 struct sockaddr_in6 *sin6; 4954 uint32_t hash_of_addr; 4955 4956 sin6 = (struct sockaddr_in6 *)addr; 4957 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] + 4958 sin6->sin6_addr.s6_addr32[1] + 4959 sin6->sin6_addr.s6_addr32[2] + 4960 sin6->sin6_addr.s6_addr32[3]); 4961 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16)); 4962 return (hash_of_addr); 4963 } 4964 #endif 4965 default: 4966 break; 4967 } 4968 return (0); 4969 } 4970 4971 struct sctp_ifa * 4972 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock) 4973 { 4974 struct sctp_ifa *sctp_ifap; 4975 struct sctp_vrf *vrf; 4976 struct sctp_ifalist *hash_head; 4977 uint32_t hash_of_addr; 4978 4979 if (holds_lock == 0) 4980 SCTP_IPI_ADDR_RLOCK(); 4981 4982 vrf = sctp_find_vrf(vrf_id); 4983 if (vrf == NULL) { 4984 stage_right: 4985 if (holds_lock == 0) 4986 SCTP_IPI_ADDR_RUNLOCK(); 4987 return (NULL); 4988 } 4989 hash_of_addr = sctp_get_ifa_hash_val(addr); 4990 4991 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)]; 4992 if (hash_head == NULL) { 4993 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ", 4994 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark, 4995 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark)); 4996 sctp_print_address(addr); 4997 SCTP_PRINTF("No such bucket for address\n"); 4998 if (holds_lock == 0) 4999 SCTP_IPI_ADDR_RUNLOCK(); 5000 5001 return (NULL); 5002 } 5003 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) { 5004 if (sctp_ifap == NULL) { 5005 #ifdef INVARIANTS 5006 panic("Huh LIST_FOREACH corrupt"); 5007 goto stage_right; 5008 #else 5009 SCTP_PRINTF("LIST corrupt of sctp_ifap's?\n"); 5010 goto stage_right; 5011 #endif 5012 } 5013 if (addr->sa_family != sctp_ifap->address.sa.sa_family) 5014 continue; 5015 #ifdef INET 5016 if (addr->sa_family == AF_INET) { 5017 if (((struct sockaddr_in *)addr)->sin_addr.s_addr == 5018 sctp_ifap->address.sin.sin_addr.s_addr) { 5019 /* found him. */ 5020 if (holds_lock == 0) 5021 SCTP_IPI_ADDR_RUNLOCK(); 5022 return (sctp_ifap); 5023 break; 5024 } 5025 } 5026 #endif 5027 #ifdef INET6 5028 if (addr->sa_family == AF_INET6) { 5029 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr, 5030 &sctp_ifap->address.sin6)) { 5031 /* found him. */ 5032 if (holds_lock == 0) 5033 SCTP_IPI_ADDR_RUNLOCK(); 5034 return (sctp_ifap); 5035 break; 5036 } 5037 } 5038 #endif 5039 } 5040 if (holds_lock == 0) 5041 SCTP_IPI_ADDR_RUNLOCK(); 5042 return (NULL); 5043 } 5044 5045 static void 5046 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock, 5047 uint32_t rwnd_req) 5048 { 5049 /* User pulled some data, do we need a rwnd update? */ 5050 int r_unlocked = 0; 5051 uint32_t dif, rwnd; 5052 struct socket *so = NULL; 5053 5054 if (stcb == NULL) 5055 return; 5056 5057 atomic_add_int(&stcb->asoc.refcnt, 1); 5058 5059 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | 5060 SCTP_STATE_SHUTDOWN_RECEIVED | 5061 SCTP_STATE_SHUTDOWN_ACK_SENT)) { 5062 /* Pre-check If we are freeing no update */ 5063 goto no_lock; 5064 } 5065 SCTP_INP_INCR_REF(stcb->sctp_ep); 5066 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 5067 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { 5068 goto out; 5069 } 5070 so = stcb->sctp_socket; 5071 if (so == NULL) { 5072 goto out; 5073 } 5074 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far); 5075 /* Have you have freed enough to look */ 5076 *freed_so_far = 0; 5077 /* Yep, its worth a look and the lock overhead */ 5078 5079 /* Figure out what the rwnd would be */ 5080 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc); 5081 if (rwnd >= stcb->asoc.my_last_reported_rwnd) { 5082 dif = rwnd - stcb->asoc.my_last_reported_rwnd; 5083 } else { 5084 dif = 0; 5085 } 5086 if (dif >= rwnd_req) { 5087 if (hold_rlock) { 5088 SCTP_INP_READ_UNLOCK(stcb->sctp_ep); 5089 r_unlocked = 1; 5090 } 5091 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5092 /* 5093 * One last check before we allow the guy possibly 5094 * to get in. There is a race, where the guy has not 5095 * reached the gate. In that case 5096 */ 5097 goto out; 5098 } 5099 SCTP_TCB_LOCK(stcb); 5100 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5101 /* No reports here */ 5102 SCTP_TCB_UNLOCK(stcb); 5103 goto out; 5104 } 5105 SCTP_STAT_INCR(sctps_wu_sacks_sent); 5106 sctp_send_sack(stcb, SCTP_SO_LOCKED); 5107 5108 sctp_chunk_output(stcb->sctp_ep, stcb, 5109 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED); 5110 /* make sure no timer is running */ 5111 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6); 5112 SCTP_TCB_UNLOCK(stcb); 5113 } else { 5114 /* Update how much we have pending */ 5115 stcb->freed_by_sorcv_sincelast = dif; 5116 } 5117 out: 5118 if (so && r_unlocked && hold_rlock) { 5119 SCTP_INP_READ_LOCK(stcb->sctp_ep); 5120 } 5121 SCTP_INP_DECR_REF(stcb->sctp_ep); 5122 no_lock: 5123 atomic_add_int(&stcb->asoc.refcnt, -1); 5124 return; 5125 } 5126 5127 int 5128 sctp_sorecvmsg(struct socket *so, 5129 struct uio *uio, 5130 struct mbuf **mp, 5131 struct sockaddr *from, 5132 int fromlen, 5133 int *msg_flags, 5134 struct sctp_sndrcvinfo *sinfo, 5135 int filling_sinfo) 5136 { 5137 /* 5138 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO. 5139 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy 5140 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ?? 5141 * On the way out we may send out any combination of: 5142 * MSG_NOTIFICATION MSG_EOR 5143 * 5144 */ 5145 struct sctp_inpcb *inp = NULL; 5146 int my_len = 0; 5147 int cp_len = 0, error = 0; 5148 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL; 5149 struct mbuf *m = NULL; 5150 struct sctp_tcb *stcb = NULL; 5151 int wakeup_read_socket = 0; 5152 int freecnt_applied = 0; 5153 int out_flags = 0, in_flags = 0; 5154 int block_allowed = 1; 5155 uint32_t freed_so_far = 0; 5156 uint32_t copied_so_far = 0; 5157 int in_eeor_mode = 0; 5158 int no_rcv_needed = 0; 5159 uint32_t rwnd_req = 0; 5160 int hold_sblock = 0; 5161 int hold_rlock = 0; 5162 int slen = 0; 5163 uint32_t held_length = 0; 5164 int sockbuf_lock = 0; 5165 5166 if (uio == NULL) { 5167 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 5168 return (EINVAL); 5169 } 5170 if (msg_flags) { 5171 in_flags = *msg_flags; 5172 if (in_flags & MSG_PEEK) 5173 SCTP_STAT_INCR(sctps_read_peeks); 5174 } else { 5175 in_flags = 0; 5176 } 5177 slen = uio->uio_resid; 5178 5179 /* Pull in and set up our int flags */ 5180 if (in_flags & MSG_OOB) { 5181 /* Out of band's NOT supported */ 5182 return (EOPNOTSUPP); 5183 } 5184 if ((in_flags & MSG_PEEK) && (mp != NULL)) { 5185 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 5186 return (EINVAL); 5187 } 5188 if ((in_flags & (MSG_DONTWAIT 5189 | MSG_NBIO 5190 )) || 5191 SCTP_SO_IS_NBIO(so)) { 5192 block_allowed = 0; 5193 } 5194 /* setup the endpoint */ 5195 inp = (struct sctp_inpcb *)so->so_pcb; 5196 if (inp == NULL) { 5197 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT); 5198 return (EFAULT); 5199 } 5200 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT); 5201 /* Must be at least a MTU's worth */ 5202 if (rwnd_req < SCTP_MIN_RWND) 5203 rwnd_req = SCTP_MIN_RWND; 5204 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); 5205 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 5206 sctp_misc_ints(SCTP_SORECV_ENTER, 5207 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid); 5208 } 5209 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 5210 sctp_misc_ints(SCTP_SORECV_ENTERPL, 5211 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid); 5212 } 5213 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0)); 5214 if (error) { 5215 goto release_unlocked; 5216 } 5217 sockbuf_lock = 1; 5218 restart: 5219 5220 5221 restart_nosblocks: 5222 if (hold_sblock == 0) { 5223 SOCKBUF_LOCK(&so->so_rcv); 5224 hold_sblock = 1; 5225 } 5226 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || 5227 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { 5228 goto out; 5229 } 5230 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) { 5231 if (so->so_error) { 5232 error = so->so_error; 5233 if ((in_flags & MSG_PEEK) == 0) 5234 so->so_error = 0; 5235 goto out; 5236 } else { 5237 if (so->so_rcv.sb_cc == 0) { 5238 /* indicate EOF */ 5239 error = 0; 5240 goto out; 5241 } 5242 } 5243 } 5244 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) { 5245 /* we need to wait for data */ 5246 if ((so->so_rcv.sb_cc == 0) && 5247 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 5248 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { 5249 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 5250 /* 5251 * For active open side clear flags for 5252 * re-use passive open is blocked by 5253 * connect. 5254 */ 5255 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { 5256 /* 5257 * You were aborted, passive side 5258 * always hits here 5259 */ 5260 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 5261 error = ECONNRESET; 5262 } 5263 so->so_state &= ~(SS_ISCONNECTING | 5264 SS_ISDISCONNECTING | 5265 SS_ISCONFIRMING | 5266 SS_ISCONNECTED); 5267 if (error == 0) { 5268 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { 5269 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); 5270 error = ENOTCONN; 5271 } 5272 } 5273 goto out; 5274 } 5275 } 5276 error = sbwait(&so->so_rcv); 5277 if (error) { 5278 goto out; 5279 } 5280 held_length = 0; 5281 goto restart_nosblocks; 5282 } else if (so->so_rcv.sb_cc == 0) { 5283 if (so->so_error) { 5284 error = so->so_error; 5285 if ((in_flags & MSG_PEEK) == 0) 5286 so->so_error = 0; 5287 } else { 5288 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || 5289 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { 5290 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 5291 /* 5292 * For active open side clear flags 5293 * for re-use passive open is 5294 * blocked by connect. 5295 */ 5296 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { 5297 /* 5298 * You were aborted, passive 5299 * side always hits here 5300 */ 5301 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); 5302 error = ECONNRESET; 5303 } 5304 so->so_state &= ~(SS_ISCONNECTING | 5305 SS_ISDISCONNECTING | 5306 SS_ISCONFIRMING | 5307 SS_ISCONNECTED); 5308 if (error == 0) { 5309 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { 5310 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); 5311 error = ENOTCONN; 5312 } 5313 } 5314 goto out; 5315 } 5316 } 5317 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK); 5318 error = EWOULDBLOCK; 5319 } 5320 goto out; 5321 } 5322 if (hold_sblock == 1) { 5323 SOCKBUF_UNLOCK(&so->so_rcv); 5324 hold_sblock = 0; 5325 } 5326 /* we possibly have data we can read */ 5327 /* sa_ignore FREED_MEMORY */ 5328 control = TAILQ_FIRST(&inp->read_queue); 5329 if (control == NULL) { 5330 /* 5331 * This could be happening since the appender did the 5332 * increment but as not yet did the tailq insert onto the 5333 * read_queue 5334 */ 5335 if (hold_rlock == 0) { 5336 SCTP_INP_READ_LOCK(inp); 5337 } 5338 control = TAILQ_FIRST(&inp->read_queue); 5339 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) { 5340 #ifdef INVARIANTS 5341 panic("Huh, its non zero and nothing on control?"); 5342 #endif 5343 so->so_rcv.sb_cc = 0; 5344 } 5345 SCTP_INP_READ_UNLOCK(inp); 5346 hold_rlock = 0; 5347 goto restart; 5348 } 5349 if ((control->length == 0) && 5350 (control->do_not_ref_stcb)) { 5351 /* 5352 * Clean up code for freeing assoc that left behind a 5353 * pdapi.. maybe a peer in EEOR that just closed after 5354 * sending and never indicated a EOR. 5355 */ 5356 if (hold_rlock == 0) { 5357 hold_rlock = 1; 5358 SCTP_INP_READ_LOCK(inp); 5359 } 5360 control->held_length = 0; 5361 if (control->data) { 5362 /* Hmm there is data here .. fix */ 5363 struct mbuf *m_tmp; 5364 int cnt = 0; 5365 5366 m_tmp = control->data; 5367 while (m_tmp) { 5368 cnt += SCTP_BUF_LEN(m_tmp); 5369 if (SCTP_BUF_NEXT(m_tmp) == NULL) { 5370 control->tail_mbuf = m_tmp; 5371 control->end_added = 1; 5372 } 5373 m_tmp = SCTP_BUF_NEXT(m_tmp); 5374 } 5375 control->length = cnt; 5376 } else { 5377 /* remove it */ 5378 TAILQ_REMOVE(&inp->read_queue, control, next); 5379 /* Add back any hiddend data */ 5380 sctp_free_remote_addr(control->whoFrom); 5381 sctp_free_a_readq(stcb, control); 5382 } 5383 if (hold_rlock) { 5384 hold_rlock = 0; 5385 SCTP_INP_READ_UNLOCK(inp); 5386 } 5387 goto restart; 5388 } 5389 if ((control->length == 0) && 5390 (control->end_added == 1)) { 5391 /* 5392 * Do we also need to check for (control->pdapi_aborted == 5393 * 1)? 5394 */ 5395 if (hold_rlock == 0) { 5396 hold_rlock = 1; 5397 SCTP_INP_READ_LOCK(inp); 5398 } 5399 TAILQ_REMOVE(&inp->read_queue, control, next); 5400 if (control->data) { 5401 #ifdef INVARIANTS 5402 panic("control->data not null but control->length == 0"); 5403 #else 5404 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n"); 5405 sctp_m_freem(control->data); 5406 control->data = NULL; 5407 #endif 5408 } 5409 if (control->aux_data) { 5410 sctp_m_free(control->aux_data); 5411 control->aux_data = NULL; 5412 } 5413 sctp_free_remote_addr(control->whoFrom); 5414 sctp_free_a_readq(stcb, control); 5415 if (hold_rlock) { 5416 hold_rlock = 0; 5417 SCTP_INP_READ_UNLOCK(inp); 5418 } 5419 goto restart; 5420 } 5421 if (control->length == 0) { 5422 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) && 5423 (filling_sinfo)) { 5424 /* find a more suitable one then this */ 5425 ctl = TAILQ_NEXT(control, next); 5426 while (ctl) { 5427 if ((ctl->stcb != control->stcb) && (ctl->length) && 5428 (ctl->some_taken || 5429 (ctl->spec_flags & M_NOTIFICATION) || 5430 ((ctl->do_not_ref_stcb == 0) && 5431 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0))) 5432 ) { 5433 /*- 5434 * If we have a different TCB next, and there is data 5435 * present. If we have already taken some (pdapi), OR we can 5436 * ref the tcb and no delivery as started on this stream, we 5437 * take it. Note we allow a notification on a different 5438 * assoc to be delivered.. 5439 */ 5440 control = ctl; 5441 goto found_one; 5442 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) && 5443 (ctl->length) && 5444 ((ctl->some_taken) || 5445 ((ctl->do_not_ref_stcb == 0) && 5446 ((ctl->spec_flags & M_NOTIFICATION) == 0) && 5447 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) { 5448 /*- 5449 * If we have the same tcb, and there is data present, and we 5450 * have the strm interleave feature present. Then if we have 5451 * taken some (pdapi) or we can refer to tht tcb AND we have 5452 * not started a delivery for this stream, we can take it. 5453 * Note we do NOT allow a notificaiton on the same assoc to 5454 * be delivered. 5455 */ 5456 control = ctl; 5457 goto found_one; 5458 } 5459 ctl = TAILQ_NEXT(ctl, next); 5460 } 5461 } 5462 /* 5463 * if we reach here, not suitable replacement is available 5464 * <or> fragment interleave is NOT on. So stuff the sb_cc 5465 * into the our held count, and its time to sleep again. 5466 */ 5467 held_length = so->so_rcv.sb_cc; 5468 control->held_length = so->so_rcv.sb_cc; 5469 goto restart; 5470 } 5471 /* Clear the held length since there is something to read */ 5472 control->held_length = 0; 5473 if (hold_rlock) { 5474 SCTP_INP_READ_UNLOCK(inp); 5475 hold_rlock = 0; 5476 } 5477 found_one: 5478 /* 5479 * If we reach here, control has a some data for us to read off. 5480 * Note that stcb COULD be NULL. 5481 */ 5482 control->some_taken++; 5483 if (hold_sblock) { 5484 SOCKBUF_UNLOCK(&so->so_rcv); 5485 hold_sblock = 0; 5486 } 5487 stcb = control->stcb; 5488 if (stcb) { 5489 if ((control->do_not_ref_stcb == 0) && 5490 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) { 5491 if (freecnt_applied == 0) 5492 stcb = NULL; 5493 } else if (control->do_not_ref_stcb == 0) { 5494 /* you can't free it on me please */ 5495 /* 5496 * The lock on the socket buffer protects us so the 5497 * free code will stop. But since we used the 5498 * socketbuf lock and the sender uses the tcb_lock 5499 * to increment, we need to use the atomic add to 5500 * the refcnt 5501 */ 5502 if (freecnt_applied) { 5503 #ifdef INVARIANTS 5504 panic("refcnt already incremented"); 5505 #else 5506 SCTP_PRINTF("refcnt already incremented?\n"); 5507 #endif 5508 } else { 5509 atomic_add_int(&stcb->asoc.refcnt, 1); 5510 freecnt_applied = 1; 5511 } 5512 /* 5513 * Setup to remember how much we have not yet told 5514 * the peer our rwnd has opened up. Note we grab the 5515 * value from the tcb from last time. Note too that 5516 * sack sending clears this when a sack is sent, 5517 * which is fine. Once we hit the rwnd_req, we then 5518 * will go to the sctp_user_rcvd() that will not 5519 * lock until it KNOWs it MUST send a WUP-SACK. 5520 */ 5521 freed_so_far = stcb->freed_by_sorcv_sincelast; 5522 stcb->freed_by_sorcv_sincelast = 0; 5523 } 5524 } 5525 if (stcb && 5526 ((control->spec_flags & M_NOTIFICATION) == 0) && 5527 control->do_not_ref_stcb == 0) { 5528 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1; 5529 } 5530 /* First lets get off the sinfo and sockaddr info */ 5531 if ((sinfo) && filling_sinfo) { 5532 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo)); 5533 nxt = TAILQ_NEXT(control, next); 5534 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) || 5535 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) { 5536 struct sctp_extrcvinfo *s_extra; 5537 5538 s_extra = (struct sctp_extrcvinfo *)sinfo; 5539 if ((nxt) && 5540 (nxt->length)) { 5541 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL; 5542 if (nxt->sinfo_flags & SCTP_UNORDERED) { 5543 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED; 5544 } 5545 if (nxt->spec_flags & M_NOTIFICATION) { 5546 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION; 5547 } 5548 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id; 5549 s_extra->sreinfo_next_length = nxt->length; 5550 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid; 5551 s_extra->sreinfo_next_stream = nxt->sinfo_stream; 5552 if (nxt->tail_mbuf != NULL) { 5553 if (nxt->end_added) { 5554 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE; 5555 } 5556 } 5557 } else { 5558 /* 5559 * we explicitly 0 this, since the memcpy 5560 * got some other things beyond the older 5561 * sinfo_ that is on the control's structure 5562 * :-D 5563 */ 5564 nxt = NULL; 5565 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG; 5566 s_extra->sreinfo_next_aid = 0; 5567 s_extra->sreinfo_next_length = 0; 5568 s_extra->sreinfo_next_ppid = 0; 5569 s_extra->sreinfo_next_stream = 0; 5570 } 5571 } 5572 /* 5573 * update off the real current cum-ack, if we have an stcb. 5574 */ 5575 if ((control->do_not_ref_stcb == 0) && stcb) 5576 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn; 5577 /* 5578 * mask off the high bits, we keep the actual chunk bits in 5579 * there. 5580 */ 5581 sinfo->sinfo_flags &= 0x00ff; 5582 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) { 5583 sinfo->sinfo_flags |= SCTP_UNORDERED; 5584 } 5585 } 5586 #ifdef SCTP_ASOCLOG_OF_TSNS 5587 { 5588 int index, newindex; 5589 struct sctp_pcbtsn_rlog *entry; 5590 5591 do { 5592 index = inp->readlog_index; 5593 newindex = index + 1; 5594 if (newindex >= SCTP_READ_LOG_SIZE) { 5595 newindex = 0; 5596 } 5597 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0); 5598 entry = &inp->readlog[index]; 5599 entry->vtag = control->sinfo_assoc_id; 5600 entry->strm = control->sinfo_stream; 5601 entry->seq = control->sinfo_ssn; 5602 entry->sz = control->length; 5603 entry->flgs = control->sinfo_flags; 5604 } 5605 #endif 5606 if (fromlen && from) { 5607 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sa.sa_len); 5608 switch (control->whoFrom->ro._l_addr.sa.sa_family) { 5609 #ifdef INET6 5610 case AF_INET6: 5611 ((struct sockaddr_in6 *)from)->sin6_port = control->port_from; 5612 break; 5613 #endif 5614 #ifdef INET 5615 case AF_INET: 5616 ((struct sockaddr_in *)from)->sin_port = control->port_from; 5617 break; 5618 #endif 5619 default: 5620 break; 5621 } 5622 memcpy(from, &control->whoFrom->ro._l_addr, cp_len); 5623 5624 #if defined(INET) && defined(INET6) 5625 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) && 5626 (from->sa_family == AF_INET) && 5627 ((size_t)fromlen >= sizeof(struct sockaddr_in6))) { 5628 struct sockaddr_in *sin; 5629 struct sockaddr_in6 sin6; 5630 5631 sin = (struct sockaddr_in *)from; 5632 bzero(&sin6, sizeof(sin6)); 5633 sin6.sin6_family = AF_INET6; 5634 sin6.sin6_len = sizeof(struct sockaddr_in6); 5635 sin6.sin6_addr.s6_addr32[2] = htonl(0xffff); 5636 bcopy(&sin->sin_addr, 5637 &sin6.sin6_addr.s6_addr32[3], 5638 sizeof(sin6.sin6_addr.s6_addr32[3])); 5639 sin6.sin6_port = sin->sin_port; 5640 memcpy(from, &sin6, sizeof(struct sockaddr_in6)); 5641 } 5642 #endif 5643 #ifdef INET6 5644 { 5645 struct sockaddr_in6 lsa6, *from6; 5646 5647 from6 = (struct sockaddr_in6 *)from; 5648 sctp_recover_scope_mac(from6, (&lsa6)); 5649 } 5650 #endif 5651 } 5652 /* now copy out what data we can */ 5653 if (mp == NULL) { 5654 /* copy out each mbuf in the chain up to length */ 5655 get_more_data: 5656 m = control->data; 5657 while (m) { 5658 /* Move out all we can */ 5659 cp_len = (int)uio->uio_resid; 5660 my_len = (int)SCTP_BUF_LEN(m); 5661 if (cp_len > my_len) { 5662 /* not enough in this buf */ 5663 cp_len = my_len; 5664 } 5665 if (hold_rlock) { 5666 SCTP_INP_READ_UNLOCK(inp); 5667 hold_rlock = 0; 5668 } 5669 if (cp_len > 0) 5670 error = uiomove(mtod(m, char *), cp_len, uio); 5671 /* re-read */ 5672 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { 5673 goto release; 5674 } 5675 if ((control->do_not_ref_stcb == 0) && stcb && 5676 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 5677 no_rcv_needed = 1; 5678 } 5679 if (error) { 5680 /* error we are out of here */ 5681 goto release; 5682 } 5683 if ((SCTP_BUF_NEXT(m) == NULL) && 5684 (cp_len >= SCTP_BUF_LEN(m)) && 5685 ((control->end_added == 0) || 5686 (control->end_added && 5687 (TAILQ_NEXT(control, next) == NULL))) 5688 ) { 5689 SCTP_INP_READ_LOCK(inp); 5690 hold_rlock = 1; 5691 } 5692 if (cp_len == SCTP_BUF_LEN(m)) { 5693 if ((SCTP_BUF_NEXT(m) == NULL) && 5694 (control->end_added)) { 5695 out_flags |= MSG_EOR; 5696 if ((control->do_not_ref_stcb == 0) && 5697 (control->stcb != NULL) && 5698 ((control->spec_flags & M_NOTIFICATION) == 0)) 5699 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5700 } 5701 if (control->spec_flags & M_NOTIFICATION) { 5702 out_flags |= MSG_NOTIFICATION; 5703 } 5704 /* we ate up the mbuf */ 5705 if (in_flags & MSG_PEEK) { 5706 /* just looking */ 5707 m = SCTP_BUF_NEXT(m); 5708 copied_so_far += cp_len; 5709 } else { 5710 /* dispose of the mbuf */ 5711 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5712 sctp_sblog(&so->so_rcv, 5713 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 5714 } 5715 sctp_sbfree(control, stcb, &so->so_rcv, m); 5716 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5717 sctp_sblog(&so->so_rcv, 5718 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 5719 } 5720 copied_so_far += cp_len; 5721 freed_so_far += cp_len; 5722 freed_so_far += MSIZE; 5723 atomic_subtract_int(&control->length, cp_len); 5724 control->data = sctp_m_free(m); 5725 m = control->data; 5726 /* 5727 * been through it all, must hold sb 5728 * lock ok to null tail 5729 */ 5730 if (control->data == NULL) { 5731 #ifdef INVARIANTS 5732 if ((control->end_added == 0) || 5733 (TAILQ_NEXT(control, next) == NULL)) { 5734 /* 5735 * If the end is not 5736 * added, OR the 5737 * next is NOT null 5738 * we MUST have the 5739 * lock. 5740 */ 5741 if (mtx_owned(&inp->inp_rdata_mtx) == 0) { 5742 panic("Hmm we don't own the lock?"); 5743 } 5744 } 5745 #endif 5746 control->tail_mbuf = NULL; 5747 #ifdef INVARIANTS 5748 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) { 5749 panic("end_added, nothing left and no MSG_EOR"); 5750 } 5751 #endif 5752 } 5753 } 5754 } else { 5755 /* Do we need to trim the mbuf? */ 5756 if (control->spec_flags & M_NOTIFICATION) { 5757 out_flags |= MSG_NOTIFICATION; 5758 } 5759 if ((in_flags & MSG_PEEK) == 0) { 5760 SCTP_BUF_RESV_UF(m, cp_len); 5761 SCTP_BUF_LEN(m) -= cp_len; 5762 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5763 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len); 5764 } 5765 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len); 5766 if ((control->do_not_ref_stcb == 0) && 5767 stcb) { 5768 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len); 5769 } 5770 copied_so_far += cp_len; 5771 freed_so_far += cp_len; 5772 freed_so_far += MSIZE; 5773 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5774 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, 5775 SCTP_LOG_SBRESULT, 0); 5776 } 5777 atomic_subtract_int(&control->length, cp_len); 5778 } else { 5779 copied_so_far += cp_len; 5780 } 5781 } 5782 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) { 5783 break; 5784 } 5785 if (((stcb) && (in_flags & MSG_PEEK) == 0) && 5786 (control->do_not_ref_stcb == 0) && 5787 (freed_so_far >= rwnd_req)) { 5788 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5789 } 5790 } /* end while(m) */ 5791 /* 5792 * At this point we have looked at it all and we either have 5793 * a MSG_EOR/or read all the user wants... <OR> 5794 * control->length == 0. 5795 */ 5796 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) { 5797 /* we are done with this control */ 5798 if (control->length == 0) { 5799 if (control->data) { 5800 #ifdef INVARIANTS 5801 panic("control->data not null at read eor?"); 5802 #else 5803 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n"); 5804 sctp_m_freem(control->data); 5805 control->data = NULL; 5806 #endif 5807 } 5808 done_with_control: 5809 if (TAILQ_NEXT(control, next) == NULL) { 5810 /* 5811 * If we don't have a next we need a 5812 * lock, if there is a next 5813 * interrupt is filling ahead of us 5814 * and we don't need a lock to 5815 * remove this guy (which is the 5816 * head of the queue). 5817 */ 5818 if (hold_rlock == 0) { 5819 SCTP_INP_READ_LOCK(inp); 5820 hold_rlock = 1; 5821 } 5822 } 5823 TAILQ_REMOVE(&inp->read_queue, control, next); 5824 /* Add back any hiddend data */ 5825 if (control->held_length) { 5826 held_length = 0; 5827 control->held_length = 0; 5828 wakeup_read_socket = 1; 5829 } 5830 if (control->aux_data) { 5831 sctp_m_free(control->aux_data); 5832 control->aux_data = NULL; 5833 } 5834 no_rcv_needed = control->do_not_ref_stcb; 5835 sctp_free_remote_addr(control->whoFrom); 5836 control->data = NULL; 5837 sctp_free_a_readq(stcb, control); 5838 control = NULL; 5839 if ((freed_so_far >= rwnd_req) && 5840 (no_rcv_needed == 0)) 5841 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5842 5843 } else { 5844 /* 5845 * The user did not read all of this 5846 * message, turn off the returned MSG_EOR 5847 * since we are leaving more behind on the 5848 * control to read. 5849 */ 5850 #ifdef INVARIANTS 5851 if (control->end_added && 5852 (control->data == NULL) && 5853 (control->tail_mbuf == NULL)) { 5854 panic("Gak, control->length is corrupt?"); 5855 } 5856 #endif 5857 no_rcv_needed = control->do_not_ref_stcb; 5858 out_flags &= ~MSG_EOR; 5859 } 5860 } 5861 if (out_flags & MSG_EOR) { 5862 goto release; 5863 } 5864 if ((uio->uio_resid == 0) || 5865 ((in_eeor_mode) && (copied_so_far >= max(so->so_rcv.sb_lowat, 1))) 5866 ) { 5867 goto release; 5868 } 5869 /* 5870 * If I hit here the receiver wants more and this message is 5871 * NOT done (pd-api). So two questions. Can we block? if not 5872 * we are done. Did the user NOT set MSG_WAITALL? 5873 */ 5874 if (block_allowed == 0) { 5875 goto release; 5876 } 5877 /* 5878 * We need to wait for more data a few things: - We don't 5879 * sbunlock() so we don't get someone else reading. - We 5880 * must be sure to account for the case where what is added 5881 * is NOT to our control when we wakeup. 5882 */ 5883 5884 /* 5885 * Do we need to tell the transport a rwnd update might be 5886 * needed before we go to sleep? 5887 */ 5888 if (((stcb) && (in_flags & MSG_PEEK) == 0) && 5889 ((freed_so_far >= rwnd_req) && 5890 (control->do_not_ref_stcb == 0) && 5891 (no_rcv_needed == 0))) { 5892 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 5893 } 5894 wait_some_more: 5895 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) { 5896 goto release; 5897 } 5898 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) 5899 goto release; 5900 5901 if (hold_rlock == 1) { 5902 SCTP_INP_READ_UNLOCK(inp); 5903 hold_rlock = 0; 5904 } 5905 if (hold_sblock == 0) { 5906 SOCKBUF_LOCK(&so->so_rcv); 5907 hold_sblock = 1; 5908 } 5909 if ((copied_so_far) && (control->length == 0) && 5910 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) { 5911 goto release; 5912 } 5913 if (so->so_rcv.sb_cc <= control->held_length) { 5914 error = sbwait(&so->so_rcv); 5915 if (error) { 5916 goto release; 5917 } 5918 control->held_length = 0; 5919 } 5920 if (hold_sblock) { 5921 SOCKBUF_UNLOCK(&so->so_rcv); 5922 hold_sblock = 0; 5923 } 5924 if (control->length == 0) { 5925 /* still nothing here */ 5926 if (control->end_added == 1) { 5927 /* he aborted, or is done i.e.did a shutdown */ 5928 out_flags |= MSG_EOR; 5929 if (control->pdapi_aborted) { 5930 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 5931 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5932 5933 out_flags |= MSG_TRUNC; 5934 } else { 5935 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) 5936 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5937 } 5938 goto done_with_control; 5939 } 5940 if (so->so_rcv.sb_cc > held_length) { 5941 control->held_length = so->so_rcv.sb_cc; 5942 held_length = 0; 5943 } 5944 goto wait_some_more; 5945 } else if (control->data == NULL) { 5946 /* 5947 * we must re-sync since data is probably being 5948 * added 5949 */ 5950 SCTP_INP_READ_LOCK(inp); 5951 if ((control->length > 0) && (control->data == NULL)) { 5952 /* 5953 * big trouble.. we have the lock and its 5954 * corrupt? 5955 */ 5956 #ifdef INVARIANTS 5957 panic("Impossible data==NULL length !=0"); 5958 #endif 5959 out_flags |= MSG_EOR; 5960 out_flags |= MSG_TRUNC; 5961 control->length = 0; 5962 SCTP_INP_READ_UNLOCK(inp); 5963 goto done_with_control; 5964 } 5965 SCTP_INP_READ_UNLOCK(inp); 5966 /* We will fall around to get more data */ 5967 } 5968 goto get_more_data; 5969 } else { 5970 /*- 5971 * Give caller back the mbuf chain, 5972 * store in uio_resid the length 5973 */ 5974 wakeup_read_socket = 0; 5975 if ((control->end_added == 0) || 5976 (TAILQ_NEXT(control, next) == NULL)) { 5977 /* Need to get rlock */ 5978 if (hold_rlock == 0) { 5979 SCTP_INP_READ_LOCK(inp); 5980 hold_rlock = 1; 5981 } 5982 } 5983 if (control->end_added) { 5984 out_flags |= MSG_EOR; 5985 if ((control->do_not_ref_stcb == 0) && 5986 (control->stcb != NULL) && 5987 ((control->spec_flags & M_NOTIFICATION) == 0)) 5988 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; 5989 } 5990 if (control->spec_flags & M_NOTIFICATION) { 5991 out_flags |= MSG_NOTIFICATION; 5992 } 5993 uio->uio_resid = control->length; 5994 *mp = control->data; 5995 m = control->data; 5996 while (m) { 5997 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 5998 sctp_sblog(&so->so_rcv, 5999 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); 6000 } 6001 sctp_sbfree(control, stcb, &so->so_rcv, m); 6002 freed_so_far += SCTP_BUF_LEN(m); 6003 freed_so_far += MSIZE; 6004 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { 6005 sctp_sblog(&so->so_rcv, 6006 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); 6007 } 6008 m = SCTP_BUF_NEXT(m); 6009 } 6010 control->data = control->tail_mbuf = NULL; 6011 control->length = 0; 6012 if (out_flags & MSG_EOR) { 6013 /* Done with this control */ 6014 goto done_with_control; 6015 } 6016 } 6017 release: 6018 if (hold_rlock == 1) { 6019 SCTP_INP_READ_UNLOCK(inp); 6020 hold_rlock = 0; 6021 } 6022 if (hold_sblock == 1) { 6023 SOCKBUF_UNLOCK(&so->so_rcv); 6024 hold_sblock = 0; 6025 } 6026 sbunlock(&so->so_rcv); 6027 sockbuf_lock = 0; 6028 6029 release_unlocked: 6030 if (hold_sblock) { 6031 SOCKBUF_UNLOCK(&so->so_rcv); 6032 hold_sblock = 0; 6033 } 6034 if ((stcb) && (in_flags & MSG_PEEK) == 0) { 6035 if ((freed_so_far >= rwnd_req) && 6036 (control && (control->do_not_ref_stcb == 0)) && 6037 (no_rcv_needed == 0)) 6038 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); 6039 } 6040 out: 6041 if (msg_flags) { 6042 *msg_flags = out_flags; 6043 } 6044 if (((out_flags & MSG_EOR) == 0) && 6045 ((in_flags & MSG_PEEK) == 0) && 6046 (sinfo) && 6047 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) || 6048 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) { 6049 struct sctp_extrcvinfo *s_extra; 6050 6051 s_extra = (struct sctp_extrcvinfo *)sinfo; 6052 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG; 6053 } 6054 if (hold_rlock == 1) { 6055 SCTP_INP_READ_UNLOCK(inp); 6056 } 6057 if (hold_sblock) { 6058 SOCKBUF_UNLOCK(&so->so_rcv); 6059 } 6060 if (sockbuf_lock) { 6061 sbunlock(&so->so_rcv); 6062 } 6063 if (freecnt_applied) { 6064 /* 6065 * The lock on the socket buffer protects us so the free 6066 * code will stop. But since we used the socketbuf lock and 6067 * the sender uses the tcb_lock to increment, we need to use 6068 * the atomic add to the refcnt. 6069 */ 6070 if (stcb == NULL) { 6071 #ifdef INVARIANTS 6072 panic("stcb for refcnt has gone NULL?"); 6073 goto stage_left; 6074 #else 6075 goto stage_left; 6076 #endif 6077 } 6078 atomic_add_int(&stcb->asoc.refcnt, -1); 6079 /* Save the value back for next time */ 6080 stcb->freed_by_sorcv_sincelast = freed_so_far; 6081 } 6082 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { 6083 if (stcb) { 6084 sctp_misc_ints(SCTP_SORECV_DONE, 6085 freed_so_far, 6086 ((uio) ? (slen - uio->uio_resid) : slen), 6087 stcb->asoc.my_rwnd, 6088 so->so_rcv.sb_cc); 6089 } else { 6090 sctp_misc_ints(SCTP_SORECV_DONE, 6091 freed_so_far, 6092 ((uio) ? (slen - uio->uio_resid) : slen), 6093 0, 6094 so->so_rcv.sb_cc); 6095 } 6096 } 6097 stage_left: 6098 if (wakeup_read_socket) { 6099 sctp_sorwakeup(inp, so); 6100 } 6101 return (error); 6102 } 6103 6104 6105 #ifdef SCTP_MBUF_LOGGING 6106 struct mbuf * 6107 sctp_m_free(struct mbuf *m) 6108 { 6109 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 6110 if (SCTP_BUF_IS_EXTENDED(m)) { 6111 sctp_log_mb(m, SCTP_MBUF_IFREE); 6112 } 6113 } 6114 return (m_free(m)); 6115 } 6116 6117 void 6118 sctp_m_freem(struct mbuf *mb) 6119 { 6120 while (mb != NULL) 6121 mb = sctp_m_free(mb); 6122 } 6123 6124 #endif 6125 6126 int 6127 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id) 6128 { 6129 /* 6130 * Given a local address. For all associations that holds the 6131 * address, request a peer-set-primary. 6132 */ 6133 struct sctp_ifa *ifa; 6134 struct sctp_laddr *wi; 6135 6136 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0); 6137 if (ifa == NULL) { 6138 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL); 6139 return (EADDRNOTAVAIL); 6140 } 6141 /* 6142 * Now that we have the ifa we must awaken the iterator with this 6143 * message. 6144 */ 6145 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); 6146 if (wi == NULL) { 6147 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); 6148 return (ENOMEM); 6149 } 6150 /* Now incr the count and int wi structure */ 6151 SCTP_INCR_LADDR_COUNT(); 6152 bzero(wi, sizeof(*wi)); 6153 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time); 6154 wi->ifa = ifa; 6155 wi->action = SCTP_SET_PRIM_ADDR; 6156 atomic_add_int(&ifa->refcount, 1); 6157 6158 /* Now add it to the work queue */ 6159 SCTP_WQ_ADDR_LOCK(); 6160 /* 6161 * Should this really be a tailq? As it is we will process the 6162 * newest first :-0 6163 */ 6164 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); 6165 SCTP_WQ_ADDR_UNLOCK(); 6166 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, 6167 (struct sctp_inpcb *)NULL, 6168 (struct sctp_tcb *)NULL, 6169 (struct sctp_nets *)NULL); 6170 return (0); 6171 } 6172 6173 6174 int 6175 sctp_soreceive(struct socket *so, 6176 struct sockaddr **psa, 6177 struct uio *uio, 6178 struct mbuf **mp0, 6179 struct mbuf **controlp, 6180 int *flagsp) 6181 { 6182 int error, fromlen; 6183 uint8_t sockbuf[256]; 6184 struct sockaddr *from; 6185 struct sctp_extrcvinfo sinfo; 6186 int filling_sinfo = 1; 6187 struct sctp_inpcb *inp; 6188 6189 inp = (struct sctp_inpcb *)so->so_pcb; 6190 /* pickup the assoc we are reading from */ 6191 if (inp == NULL) { 6192 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6193 return (EINVAL); 6194 } 6195 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) && 6196 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) && 6197 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) || 6198 (controlp == NULL)) { 6199 /* user does not want the sndrcv ctl */ 6200 filling_sinfo = 0; 6201 } 6202 if (psa) { 6203 from = (struct sockaddr *)sockbuf; 6204 fromlen = sizeof(sockbuf); 6205 from->sa_len = 0; 6206 } else { 6207 from = NULL; 6208 fromlen = 0; 6209 } 6210 6211 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp, 6212 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo); 6213 if ((controlp) && (filling_sinfo)) { 6214 /* copy back the sinfo in a CMSG format */ 6215 if (filling_sinfo) 6216 *controlp = sctp_build_ctl_nchunk(inp, 6217 (struct sctp_sndrcvinfo *)&sinfo); 6218 else 6219 *controlp = NULL; 6220 } 6221 if (psa) { 6222 /* copy back the address info */ 6223 if (from && from->sa_len) { 6224 *psa = sodupsockaddr(from, M_NOWAIT); 6225 } else { 6226 *psa = NULL; 6227 } 6228 } 6229 return (error); 6230 } 6231 6232 6233 6234 6235 6236 int 6237 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, 6238 int totaddr, int *error) 6239 { 6240 int added = 0; 6241 int i; 6242 struct sctp_inpcb *inp; 6243 struct sockaddr *sa; 6244 size_t incr = 0; 6245 6246 #ifdef INET 6247 struct sockaddr_in *sin; 6248 6249 #endif 6250 #ifdef INET6 6251 struct sockaddr_in6 *sin6; 6252 6253 #endif 6254 6255 sa = addr; 6256 inp = stcb->sctp_ep; 6257 *error = 0; 6258 for (i = 0; i < totaddr; i++) { 6259 switch (sa->sa_family) { 6260 #ifdef INET 6261 case AF_INET: 6262 incr = sizeof(struct sockaddr_in); 6263 sin = (struct sockaddr_in *)sa; 6264 if ((sin->sin_addr.s_addr == INADDR_ANY) || 6265 (sin->sin_addr.s_addr == INADDR_BROADCAST) || 6266 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) { 6267 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6268 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7); 6269 *error = EINVAL; 6270 goto out_now; 6271 } 6272 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { 6273 /* assoc gone no un-lock */ 6274 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 6275 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7); 6276 *error = ENOBUFS; 6277 goto out_now; 6278 } 6279 added++; 6280 break; 6281 #endif 6282 #ifdef INET6 6283 case AF_INET6: 6284 incr = sizeof(struct sockaddr_in6); 6285 sin6 = (struct sockaddr_in6 *)sa; 6286 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 6287 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 6288 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6289 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8); 6290 *error = EINVAL; 6291 goto out_now; 6292 } 6293 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { 6294 /* assoc gone no un-lock */ 6295 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); 6296 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8); 6297 *error = ENOBUFS; 6298 goto out_now; 6299 } 6300 added++; 6301 break; 6302 #endif 6303 default: 6304 break; 6305 } 6306 sa = (struct sockaddr *)((caddr_t)sa + incr); 6307 } 6308 out_now: 6309 return (added); 6310 } 6311 6312 struct sctp_tcb * 6313 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr, 6314 int *totaddr, int *num_v4, int *num_v6, int *error, 6315 int limit, int *bad_addr) 6316 { 6317 struct sockaddr *sa; 6318 struct sctp_tcb *stcb = NULL; 6319 size_t incr, at, i; 6320 6321 at = incr = 0; 6322 sa = addr; 6323 6324 *error = *num_v6 = *num_v4 = 0; 6325 /* account and validate addresses */ 6326 for (i = 0; i < (size_t)*totaddr; i++) { 6327 switch (sa->sa_family) { 6328 #ifdef INET 6329 case AF_INET: 6330 (*num_v4) += 1; 6331 incr = sizeof(struct sockaddr_in); 6332 if (sa->sa_len != incr) { 6333 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6334 *error = EINVAL; 6335 *bad_addr = 1; 6336 return (NULL); 6337 } 6338 break; 6339 #endif 6340 #ifdef INET6 6341 case AF_INET6: 6342 { 6343 struct sockaddr_in6 *sin6; 6344 6345 sin6 = (struct sockaddr_in6 *)sa; 6346 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6347 /* Must be non-mapped for connectx */ 6348 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6349 *error = EINVAL; 6350 *bad_addr = 1; 6351 return (NULL); 6352 } 6353 (*num_v6) += 1; 6354 incr = sizeof(struct sockaddr_in6); 6355 if (sa->sa_len != incr) { 6356 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6357 *error = EINVAL; 6358 *bad_addr = 1; 6359 return (NULL); 6360 } 6361 break; 6362 } 6363 #endif 6364 default: 6365 *totaddr = i; 6366 /* we are done */ 6367 break; 6368 } 6369 if (i == (size_t)*totaddr) { 6370 break; 6371 } 6372 SCTP_INP_INCR_REF(inp); 6373 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL); 6374 if (stcb != NULL) { 6375 /* Already have or am bring up an association */ 6376 return (stcb); 6377 } else { 6378 SCTP_INP_DECR_REF(inp); 6379 } 6380 if ((at + incr) > (size_t)limit) { 6381 *totaddr = i; 6382 break; 6383 } 6384 sa = (struct sockaddr *)((caddr_t)sa + incr); 6385 } 6386 return ((struct sctp_tcb *)NULL); 6387 } 6388 6389 /* 6390 * sctp_bindx(ADD) for one address. 6391 * assumes all arguments are valid/checked by caller. 6392 */ 6393 void 6394 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp, 6395 struct sockaddr *sa, sctp_assoc_t assoc_id, 6396 uint32_t vrf_id, int *error, void *p) 6397 { 6398 struct sockaddr *addr_touse; 6399 6400 #ifdef INET6 6401 struct sockaddr_in sin; 6402 6403 #endif 6404 6405 /* see if we're bound all already! */ 6406 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6407 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6408 *error = EINVAL; 6409 return; 6410 } 6411 addr_touse = sa; 6412 #ifdef INET6 6413 if (sa->sa_family == AF_INET6) { 6414 struct sockaddr_in6 *sin6; 6415 6416 if (sa->sa_len != sizeof(struct sockaddr_in6)) { 6417 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6418 *error = EINVAL; 6419 return; 6420 } 6421 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 6422 /* can only bind v6 on PF_INET6 sockets */ 6423 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6424 *error = EINVAL; 6425 return; 6426 } 6427 sin6 = (struct sockaddr_in6 *)addr_touse; 6428 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6429 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6430 SCTP_IPV6_V6ONLY(inp)) { 6431 /* can't bind v4-mapped on PF_INET sockets */ 6432 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6433 *error = EINVAL; 6434 return; 6435 } 6436 in6_sin6_2_sin(&sin, sin6); 6437 addr_touse = (struct sockaddr *)&sin; 6438 } 6439 } 6440 #endif 6441 #ifdef INET 6442 if (sa->sa_family == AF_INET) { 6443 if (sa->sa_len != sizeof(struct sockaddr_in)) { 6444 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6445 *error = EINVAL; 6446 return; 6447 } 6448 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6449 SCTP_IPV6_V6ONLY(inp)) { 6450 /* can't bind v4 on PF_INET sockets */ 6451 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6452 *error = EINVAL; 6453 return; 6454 } 6455 } 6456 #endif 6457 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { 6458 if (p == NULL) { 6459 /* Can't get proc for Net/Open BSD */ 6460 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6461 *error = EINVAL; 6462 return; 6463 } 6464 *error = sctp_inpcb_bind(so, addr_touse, NULL, p); 6465 return; 6466 } 6467 /* 6468 * No locks required here since bind and mgmt_ep_sa all do their own 6469 * locking. If we do something for the FIX: below we may need to 6470 * lock in that case. 6471 */ 6472 if (assoc_id == 0) { 6473 /* add the address */ 6474 struct sctp_inpcb *lep; 6475 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse; 6476 6477 /* validate the incoming port */ 6478 if ((lsin->sin_port != 0) && 6479 (lsin->sin_port != inp->sctp_lport)) { 6480 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6481 *error = EINVAL; 6482 return; 6483 } else { 6484 /* user specified 0 port, set it to existing port */ 6485 lsin->sin_port = inp->sctp_lport; 6486 } 6487 6488 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id); 6489 if (lep != NULL) { 6490 /* 6491 * We must decrement the refcount since we have the 6492 * ep already and are binding. No remove going on 6493 * here. 6494 */ 6495 SCTP_INP_DECR_REF(lep); 6496 } 6497 if (lep == inp) { 6498 /* already bound to it.. ok */ 6499 return; 6500 } else if (lep == NULL) { 6501 ((struct sockaddr_in *)addr_touse)->sin_port = 0; 6502 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse, 6503 SCTP_ADD_IP_ADDRESS, 6504 vrf_id, NULL); 6505 } else { 6506 *error = EADDRINUSE; 6507 } 6508 if (*error) 6509 return; 6510 } else { 6511 /* 6512 * FIX: decide whether we allow assoc based bindx 6513 */ 6514 } 6515 } 6516 6517 /* 6518 * sctp_bindx(DELETE) for one address. 6519 * assumes all arguments are valid/checked by caller. 6520 */ 6521 void 6522 sctp_bindx_delete_address(struct sctp_inpcb *inp, 6523 struct sockaddr *sa, sctp_assoc_t assoc_id, 6524 uint32_t vrf_id, int *error) 6525 { 6526 struct sockaddr *addr_touse; 6527 6528 #ifdef INET6 6529 struct sockaddr_in sin; 6530 6531 #endif 6532 6533 /* see if we're bound all already! */ 6534 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6535 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6536 *error = EINVAL; 6537 return; 6538 } 6539 addr_touse = sa; 6540 #ifdef INET6 6541 if (sa->sa_family == AF_INET6) { 6542 struct sockaddr_in6 *sin6; 6543 6544 if (sa->sa_len != sizeof(struct sockaddr_in6)) { 6545 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6546 *error = EINVAL; 6547 return; 6548 } 6549 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { 6550 /* can only bind v6 on PF_INET6 sockets */ 6551 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6552 *error = EINVAL; 6553 return; 6554 } 6555 sin6 = (struct sockaddr_in6 *)addr_touse; 6556 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 6557 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6558 SCTP_IPV6_V6ONLY(inp)) { 6559 /* can't bind mapped-v4 on PF_INET sockets */ 6560 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6561 *error = EINVAL; 6562 return; 6563 } 6564 in6_sin6_2_sin(&sin, sin6); 6565 addr_touse = (struct sockaddr *)&sin; 6566 } 6567 } 6568 #endif 6569 #ifdef INET 6570 if (sa->sa_family == AF_INET) { 6571 if (sa->sa_len != sizeof(struct sockaddr_in)) { 6572 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6573 *error = EINVAL; 6574 return; 6575 } 6576 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 6577 SCTP_IPV6_V6ONLY(inp)) { 6578 /* can't bind v4 on PF_INET sockets */ 6579 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); 6580 *error = EINVAL; 6581 return; 6582 } 6583 } 6584 #endif 6585 /* 6586 * No lock required mgmt_ep_sa does its own locking. If the FIX: 6587 * below is ever changed we may need to lock before calling 6588 * association level binding. 6589 */ 6590 if (assoc_id == 0) { 6591 /* delete the address */ 6592 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse, 6593 SCTP_DEL_IP_ADDRESS, 6594 vrf_id, NULL); 6595 } else { 6596 /* 6597 * FIX: decide whether we allow assoc based bindx 6598 */ 6599 } 6600 } 6601 6602 /* 6603 * returns the valid local address count for an assoc, taking into account 6604 * all scoping rules 6605 */ 6606 int 6607 sctp_local_addr_count(struct sctp_tcb *stcb) 6608 { 6609 int loopback_scope, ipv4_local_scope, local_scope, site_scope; 6610 int ipv4_addr_legal, ipv6_addr_legal; 6611 struct sctp_vrf *vrf; 6612 struct sctp_ifn *sctp_ifn; 6613 struct sctp_ifa *sctp_ifa; 6614 int count = 0; 6615 6616 /* Turn on all the appropriate scopes */ 6617 loopback_scope = stcb->asoc.scope.loopback_scope; 6618 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope; 6619 local_scope = stcb->asoc.scope.local_scope; 6620 site_scope = stcb->asoc.scope.site_scope; 6621 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal; 6622 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal; 6623 SCTP_IPI_ADDR_RLOCK(); 6624 vrf = sctp_find_vrf(stcb->asoc.vrf_id); 6625 if (vrf == NULL) { 6626 /* no vrf, no addresses */ 6627 SCTP_IPI_ADDR_RUNLOCK(); 6628 return (0); 6629 } 6630 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 6631 /* 6632 * bound all case: go through all ifns on the vrf 6633 */ 6634 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 6635 if ((loopback_scope == 0) && 6636 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 6637 continue; 6638 } 6639 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 6640 if (sctp_is_addr_restricted(stcb, sctp_ifa)) 6641 continue; 6642 switch (sctp_ifa->address.sa.sa_family) { 6643 #ifdef INET 6644 case AF_INET: 6645 if (ipv4_addr_legal) { 6646 struct sockaddr_in *sin; 6647 6648 sin = (struct sockaddr_in *)&sctp_ifa->address.sa; 6649 if (sin->sin_addr.s_addr == 0) { 6650 /* 6651 * skip unspecified 6652 * addrs 6653 */ 6654 continue; 6655 } 6656 if ((ipv4_local_scope == 0) && 6657 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { 6658 continue; 6659 } 6660 /* count this one */ 6661 count++; 6662 } else { 6663 continue; 6664 } 6665 break; 6666 #endif 6667 #ifdef INET6 6668 case AF_INET6: 6669 if (ipv6_addr_legal) { 6670 struct sockaddr_in6 *sin6; 6671 6672 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa; 6673 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 6674 continue; 6675 } 6676 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 6677 if (local_scope == 0) 6678 continue; 6679 if (sin6->sin6_scope_id == 0) { 6680 if (sa6_recoverscope(sin6) != 0) 6681 /* 6682 * 6683 * bad 6684 * 6685 * li 6686 * nk 6687 * 6688 * loc 6689 * al 6690 * 6691 * add 6692 * re 6693 * ss 6694 * */ 6695 continue; 6696 } 6697 } 6698 if ((site_scope == 0) && 6699 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { 6700 continue; 6701 } 6702 /* count this one */ 6703 count++; 6704 } 6705 break; 6706 #endif 6707 default: 6708 /* TSNH */ 6709 break; 6710 } 6711 } 6712 } 6713 } else { 6714 /* 6715 * subset bound case 6716 */ 6717 struct sctp_laddr *laddr; 6718 6719 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, 6720 sctp_nxt_addr) { 6721 if (sctp_is_addr_restricted(stcb, laddr->ifa)) { 6722 continue; 6723 } 6724 /* count this one */ 6725 count++; 6726 } 6727 } 6728 SCTP_IPI_ADDR_RUNLOCK(); 6729 return (count); 6730 } 6731 6732 #if defined(SCTP_LOCAL_TRACE_BUF) 6733 6734 void 6735 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) 6736 { 6737 uint32_t saveindex, newindex; 6738 6739 do { 6740 saveindex = SCTP_BASE_SYSCTL(sctp_log).index; 6741 if (saveindex >= SCTP_MAX_LOGGING_SIZE) { 6742 newindex = 1; 6743 } else { 6744 newindex = saveindex + 1; 6745 } 6746 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0); 6747 if (saveindex >= SCTP_MAX_LOGGING_SIZE) { 6748 saveindex = 0; 6749 } 6750 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT; 6751 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys; 6752 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a; 6753 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b; 6754 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c; 6755 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d; 6756 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e; 6757 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f; 6758 } 6759 6760 #endif 6761 static void 6762 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored) 6763 { 6764 struct ip *iph; 6765 6766 #ifdef INET6 6767 struct ip6_hdr *ip6; 6768 6769 #endif 6770 struct mbuf *sp, *last; 6771 struct udphdr *uhdr; 6772 uint16_t port; 6773 6774 if ((m->m_flags & M_PKTHDR) == 0) { 6775 /* Can't handle one that is not a pkt hdr */ 6776 goto out; 6777 } 6778 /* Pull the src port */ 6779 iph = mtod(m, struct ip *); 6780 uhdr = (struct udphdr *)((caddr_t)iph + off); 6781 port = uhdr->uh_sport; 6782 /* 6783 * Split out the mbuf chain. Leave the IP header in m, place the 6784 * rest in the sp. 6785 */ 6786 sp = m_split(m, off, M_NOWAIT); 6787 if (sp == NULL) { 6788 /* Gak, drop packet, we can't do a split */ 6789 goto out; 6790 } 6791 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) { 6792 /* Gak, packet can't have an SCTP header in it - too small */ 6793 m_freem(sp); 6794 goto out; 6795 } 6796 /* Now pull up the UDP header and SCTP header together */ 6797 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr)); 6798 if (sp == NULL) { 6799 /* Gak pullup failed */ 6800 goto out; 6801 } 6802 /* Trim out the UDP header */ 6803 m_adj(sp, sizeof(struct udphdr)); 6804 6805 /* Now reconstruct the mbuf chain */ 6806 for (last = m; last->m_next; last = last->m_next); 6807 last->m_next = sp; 6808 m->m_pkthdr.len += sp->m_pkthdr.len; 6809 iph = mtod(m, struct ip *); 6810 switch (iph->ip_v) { 6811 #ifdef INET 6812 case IPVERSION: 6813 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr)); 6814 sctp_input_with_port(m, off, port); 6815 break; 6816 #endif 6817 #ifdef INET6 6818 case IPV6_VERSION >> 4: 6819 ip6 = mtod(m, struct ip6_hdr *); 6820 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr)); 6821 sctp6_input_with_port(&m, &off, port); 6822 break; 6823 #endif 6824 default: 6825 goto out; 6826 break; 6827 } 6828 return; 6829 out: 6830 m_freem(m); 6831 } 6832 6833 void 6834 sctp_over_udp_stop(void) 6835 { 6836 /* 6837 * This function assumes sysctl caller holds sctp_sysctl_info_lock() 6838 * for writting! 6839 */ 6840 #ifdef INET 6841 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { 6842 soclose(SCTP_BASE_INFO(udp4_tun_socket)); 6843 SCTP_BASE_INFO(udp4_tun_socket) = NULL; 6844 } 6845 #endif 6846 #ifdef INET6 6847 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { 6848 soclose(SCTP_BASE_INFO(udp6_tun_socket)); 6849 SCTP_BASE_INFO(udp6_tun_socket) = NULL; 6850 } 6851 #endif 6852 } 6853 6854 int 6855 sctp_over_udp_start(void) 6856 { 6857 uint16_t port; 6858 int ret; 6859 6860 #ifdef INET 6861 struct sockaddr_in sin; 6862 6863 #endif 6864 #ifdef INET6 6865 struct sockaddr_in6 sin6; 6866 6867 #endif 6868 /* 6869 * This function assumes sysctl caller holds sctp_sysctl_info_lock() 6870 * for writting! 6871 */ 6872 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port); 6873 if (ntohs(port) == 0) { 6874 /* Must have a port set */ 6875 return (EINVAL); 6876 } 6877 #ifdef INET 6878 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { 6879 /* Already running -- must stop first */ 6880 return (EALREADY); 6881 } 6882 #endif 6883 #ifdef INET6 6884 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { 6885 /* Already running -- must stop first */ 6886 return (EALREADY); 6887 } 6888 #endif 6889 #ifdef INET 6890 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket), 6891 SOCK_DGRAM, IPPROTO_UDP, 6892 curthread->td_ucred, curthread))) { 6893 sctp_over_udp_stop(); 6894 return (ret); 6895 } 6896 /* Call the special UDP hook. */ 6897 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket), 6898 sctp_recv_udp_tunneled_packet))) { 6899 sctp_over_udp_stop(); 6900 return (ret); 6901 } 6902 /* Ok, we have a socket, bind it to the port. */ 6903 memset(&sin, 0, sizeof(struct sockaddr_in)); 6904 sin.sin_len = sizeof(struct sockaddr_in); 6905 sin.sin_family = AF_INET; 6906 sin.sin_port = htons(port); 6907 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket), 6908 (struct sockaddr *)&sin, curthread))) { 6909 sctp_over_udp_stop(); 6910 return (ret); 6911 } 6912 #endif 6913 #ifdef INET6 6914 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket), 6915 SOCK_DGRAM, IPPROTO_UDP, 6916 curthread->td_ucred, curthread))) { 6917 sctp_over_udp_stop(); 6918 return (ret); 6919 } 6920 /* Call the special UDP hook. */ 6921 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket), 6922 sctp_recv_udp_tunneled_packet))) { 6923 sctp_over_udp_stop(); 6924 return (ret); 6925 } 6926 /* Ok, we have a socket, bind it to the port. */ 6927 memset(&sin6, 0, sizeof(struct sockaddr_in6)); 6928 sin6.sin6_len = sizeof(struct sockaddr_in6); 6929 sin6.sin6_family = AF_INET6; 6930 sin6.sin6_port = htons(port); 6931 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket), 6932 (struct sockaddr *)&sin6, curthread))) { 6933 sctp_over_udp_stop(); 6934 return (ret); 6935 } 6936 #endif 6937 return (0); 6938 } 6939