1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * a) Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 14 * b) Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the distribution. 17 * 18 * c) Neither the name of Cisco Systems, Inc. nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef _NETINET_SCTP_LOCK_BSD_H_ 39 #define _NETINET_SCTP_LOCK_BSD_H_ 40 41 /* 42 * General locking concepts: The goal of our locking is to of course provide 43 * consistency and yet minimize overhead. We will attempt to use 44 * non-recursive locks which are supposed to be quite inexpensive. Now in 45 * order to do this the goal is that most functions are not aware of locking. 46 * Once we have a TCB we lock it and unlock when we are through. This means 47 * that the TCB lock is kind-of a "global" lock when working on an 48 * association. Caution must be used when asserting a TCB_LOCK since if we 49 * recurse we deadlock. 50 * 51 * Most other locks (INP and INFO) attempt to localize the locking i.e. we try 52 * to contain the lock and unlock within the function that needs to lock it. 53 * This sometimes mean we do extra locks and unlocks and lose a bit of 54 * efficiency, but if the performance statements about non-recursive locks are 55 * true this should not be a problem. One issue that arises with this only 56 * lock when needed is that if an implicit association setup is done we have 57 * a problem. If at the time I lookup an association I have NULL in the tcb 58 * return, by the time I call to create the association some other processor 59 * could have created it. This is what the CREATE lock on the endpoint. 60 * Places where we will be implicitly creating the association OR just 61 * creating an association (the connect call) will assert the CREATE_INP 62 * lock. This will assure us that during all the lookup of INP and INFO if 63 * another creator is also locking/looking up we can gate the two to 64 * synchronize. So the CREATE_INP lock is also another one we must use 65 * extreme caution in locking to make sure we don't hit a re-entrancy issue. 66 * 67 */ 68 69 /* 70 * When working with the global SCTP lists we lock and unlock the INP_INFO 71 * lock. So when we go to lookup an association we will want to do a 72 * SCTP_INP_INFO_RLOCK() and then when we want to add a new association to 73 * the SCTP_BASE_INFO() list's we will do a SCTP_INP_INFO_WLOCK(). 74 */ 75 76 #define SCTP_IPI_COUNT_INIT() 77 78 #define SCTP_STATLOG_INIT_LOCK() 79 #define SCTP_STATLOG_DESTROY() 80 #define SCTP_STATLOG_LOCK() 81 #define SCTP_STATLOG_UNLOCK() 82 83 #define SCTP_INP_INFO_LOCK_INIT() do { \ 84 rw_init(&SCTP_BASE_INFO(ipi_ep_mtx), "sctp-info"); \ 85 } while (0) 86 87 #define SCTP_INP_INFO_LOCK_DESTROY() do { \ 88 if (rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx))) { \ 89 rw_wunlock(&SCTP_BASE_INFO(ipi_ep_mtx)); \ 90 } \ 91 rw_destroy(&SCTP_BASE_INFO(ipi_ep_mtx)); \ 92 } while (0) 93 94 #define SCTP_INP_INFO_RLOCK() do { \ 95 rw_rlock(&SCTP_BASE_INFO(ipi_ep_mtx)); \ 96 } while (0) 97 98 #define SCTP_INP_INFO_WLOCK() do { \ 99 rw_wlock(&SCTP_BASE_INFO(ipi_ep_mtx)); \ 100 } while (0) 101 102 #define SCTP_INP_INFO_RUNLOCK() do { \ 103 rw_runlock(&SCTP_BASE_INFO(ipi_ep_mtx)); \ 104 } while (0) 105 106 #define SCTP_INP_INFO_WUNLOCK() do { \ 107 rw_wunlock(&SCTP_BASE_INFO(ipi_ep_mtx)); \ 108 } while (0) 109 110 111 #define SCTP_MCORE_QLOCK_INIT(cpstr) do { \ 112 mtx_init(&(cpstr)->que_mtx, "sctp-mcore_queue","queue_lock", \ 113 MTX_DEF | MTX_DUPOK); \ 114 } while (0) 115 116 #define SCTP_MCORE_QDESTROY(cpstr) do { \ 117 if (mtx_owned(&(cpstr)->core_mtx)) { \ 118 mtx_unlock(&(cpstr)->que_mtx); \ 119 } \ 120 mtx_destroy(&(cpstr)->que_mtx); \ 121 } while (0) 122 123 #define SCTP_MCORE_QLOCK(cpstr) do { \ 124 mtx_lock(&(cpstr)->que_mtx); \ 125 } while (0) 126 127 #define SCTP_MCORE_QUNLOCK(cpstr) do { \ 128 mtx_unlock(&(cpstr)->que_mtx); \ 129 } while (0) 130 131 132 #define SCTP_MCORE_LOCK_INIT(cpstr) do { \ 133 mtx_init(&(cpstr)->core_mtx, "sctp-cpulck","cpu_proc_lock", \ 134 MTX_DEF | MTX_DUPOK); \ 135 } while (0) 136 137 #define SCTP_MCORE_DESTROY(cpstr) do { \ 138 if (mtx_owned(&(cpstr)->core_mtx)) { \ 139 mtx_unlock(&(cpstr)->core_mtx); \ 140 } \ 141 mtx_destroy(&(cpstr)->core_mtx); \ 142 } while (0) 143 144 #define SCTP_MCORE_LOCK(cpstr) do { \ 145 mtx_lock(&(cpstr)->core_mtx); \ 146 } while (0) 147 148 #define SCTP_MCORE_UNLOCK(cpstr) do { \ 149 mtx_unlock(&(cpstr)->core_mtx); \ 150 } while (0) 151 152 153 #define SCTP_IPI_ADDR_INIT() do { \ 154 rw_init(&SCTP_BASE_INFO(ipi_addr_mtx), "sctp-addr"); \ 155 } while (0) 156 157 #define SCTP_IPI_ADDR_DESTROY() do { \ 158 if (rw_wowned(&SCTP_BASE_INFO(ipi_addr_mtx))) { \ 159 rw_wunlock(&SCTP_BASE_INFO(ipi_addr_mtx)); \ 160 } \ 161 rw_destroy(&SCTP_BASE_INFO(ipi_addr_mtx)); \ 162 } while (0) 163 164 #define SCTP_IPI_ADDR_RLOCK() do { \ 165 rw_rlock(&SCTP_BASE_INFO(ipi_addr_mtx)); \ 166 } while (0) 167 168 #define SCTP_IPI_ADDR_WLOCK() do { \ 169 rw_wlock(&SCTP_BASE_INFO(ipi_addr_mtx)); \ 170 } while (0) 171 172 #define SCTP_IPI_ADDR_RUNLOCK() do { \ 173 rw_runlock(&SCTP_BASE_INFO(ipi_addr_mtx)); \ 174 } while (0) 175 176 #define SCTP_IPI_ADDR_WUNLOCK() do { \ 177 rw_wunlock(&SCTP_BASE_INFO(ipi_addr_mtx)); \ 178 } while (0) 179 180 #define SCTP_IPI_ADDR_LOCK_ASSERT() do { \ 181 rw_assert(&SCTP_BASE_INFO(ipi_addr_mtx), RA_LOCKED); \ 182 } while (0) 183 184 #define SCTP_IPI_ADDR_WLOCK_ASSERT() do { \ 185 rw_assert(&SCTP_BASE_INFO(ipi_addr_mtx), RA_WLOCKED); \ 186 } while (0) 187 188 #define SCTP_IPI_ITERATOR_WQ_INIT() do { \ 189 mtx_init(&sctp_it_ctl.ipi_iterator_wq_mtx, "sctp-it-wq", \ 190 "sctp_it_wq", MTX_DEF); \ 191 } while (0) 192 193 #define SCTP_IPI_ITERATOR_WQ_DESTROY() do { \ 194 mtx_destroy(&sctp_it_ctl.ipi_iterator_wq_mtx); \ 195 } while (0) 196 197 #define SCTP_IPI_ITERATOR_WQ_LOCK() do { \ 198 mtx_lock(&sctp_it_ctl.ipi_iterator_wq_mtx); \ 199 } while (0) 200 201 #define SCTP_IPI_ITERATOR_WQ_UNLOCK() do { \ 202 mtx_unlock(&sctp_it_ctl.ipi_iterator_wq_mtx); \ 203 } while (0) 204 205 206 #define SCTP_IP_PKTLOG_INIT() do { \ 207 mtx_init(&SCTP_BASE_INFO(ipi_pktlog_mtx), "sctp-pktlog", \ 208 "packetlog", MTX_DEF); \ 209 } while (0) 210 211 #define SCTP_IP_PKTLOG_DESTROY() do { \ 212 mtx_destroy(&SCTP_BASE_INFO(ipi_pktlog_mtx)); \ 213 } while (0) 214 215 #define SCTP_IP_PKTLOG_LOCK() do { \ 216 mtx_lock(&SCTP_BASE_INFO(ipi_pktlog_mtx)); \ 217 } while (0) 218 219 #define SCTP_IP_PKTLOG_UNLOCK() do { \ 220 mtx_unlock(&SCTP_BASE_INFO(ipi_pktlog_mtx)); \ 221 } while (0) 222 223 224 /* 225 * The INP locks we will use for locking an SCTP endpoint, so for example if 226 * we want to change something at the endpoint level for example random_store 227 * or cookie secrets we lock the INP level. 228 */ 229 230 #define SCTP_INP_READ_INIT(_inp) do { \ 231 mtx_init(&(_inp)->inp_rdata_mtx, "sctp-read", "inpr", \ 232 MTX_DEF | MTX_DUPOK); \ 233 } while (0) 234 235 #define SCTP_INP_READ_DESTROY(_inp) do { \ 236 mtx_destroy(&(_inp)->inp_rdata_mtx); \ 237 } while (0) 238 239 #define SCTP_INP_READ_LOCK(_inp) do { \ 240 mtx_lock(&(_inp)->inp_rdata_mtx); \ 241 } while (0) 242 243 #define SCTP_INP_READ_UNLOCK(_inp) do { \ 244 mtx_unlock(&(_inp)->inp_rdata_mtx); \ 245 } while (0) 246 247 248 #define SCTP_INP_LOCK_INIT(_inp) do { \ 249 mtx_init(&(_inp)->inp_mtx, "sctp-inp", "inp", \ 250 MTX_DEF | MTX_DUPOK); \ 251 } while (0) 252 253 #define SCTP_INP_LOCK_DESTROY(_inp) do { \ 254 mtx_destroy(&(_inp)->inp_mtx); \ 255 } while (0) 256 257 #define SCTP_INP_LOCK_CONTENDED(_inp) \ 258 ((_inp)->inp_mtx.mtx_lock & MTX_CONTESTED) 259 260 #define SCTP_INP_READ_CONTENDED(_inp) \ 261 ((_inp)->inp_rdata_mtx.mtx_lock & MTX_CONTESTED) 262 263 #ifdef SCTP_LOCK_LOGGING 264 #define SCTP_INP_RLOCK(_inp) do { \ 265 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) \ 266 sctp_log_lock(_inp, NULL, SCTP_LOG_LOCK_INP); \ 267 mtx_lock(&(_inp)->inp_mtx); \ 268 } while (0) 269 270 #define SCTP_INP_WLOCK(_inp) do { \ 271 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) \ 272 sctp_log_lock(_inp, NULL, SCTP_LOG_LOCK_INP); \ 273 mtx_lock(&(_inp)->inp_mtx); \ 274 } while (0) 275 #else 276 #define SCTP_INP_RLOCK(_inp) do { \ 277 mtx_lock(&(_inp)->inp_mtx); \ 278 } while (0) 279 280 #define SCTP_INP_WLOCK(_inp) do { \ 281 mtx_lock(&(_inp)->inp_mtx); \ 282 } while (0) 283 #endif 284 285 #define SCTP_INP_RUNLOCK(_inp) do { \ 286 mtx_unlock(&(_inp)->inp_mtx); \ 287 } while (0) 288 289 #define SCTP_INP_WUNLOCK(_inp) do { \ 290 mtx_unlock(&(_inp)->inp_mtx); \ 291 } while (0) 292 293 #define SCTP_INP_RLOCK_ASSERT(_inp) do { \ 294 KASSERT(mtx_owned(&(_inp)->inp_mtx), \ 295 ("Don't own INP read lock")); \ 296 } while (0) 297 298 #define SCTP_INP_WLOCK_ASSERT(_inp) do { \ 299 KASSERT(mtx_owned(&(_inp)->inp_mtx), \ 300 ("Don't own INP write lock")); \ 301 } while (0) 302 303 #define SCTP_INP_INCR_REF(_inp) atomic_add_int(&((_inp)->refcount), 1) 304 #define SCTP_INP_DECR_REF(_inp) atomic_add_int(&((_inp)->refcount), -1) 305 306 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) do { \ 307 mtx_init(&(_inp)->inp_create_mtx, "sctp-create", "inp_create", \ 308 MTX_DEF | MTX_DUPOK); \ 309 } while (0) 310 311 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) do { \ 312 mtx_destroy(&(_inp)->inp_create_mtx); \ 313 } while (0) 314 315 #ifdef SCTP_LOCK_LOGGING 316 #define SCTP_ASOC_CREATE_LOCK(_inp) do { \ 317 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) \ 318 sctp_log_lock(_inp, NULL, SCTP_LOG_LOCK_CREATE); \ 319 mtx_lock(&(_inp)->inp_create_mtx); \ 320 } while (0) 321 #else 322 #define SCTP_ASOC_CREATE_LOCK(_inp) do { \ 323 mtx_lock(&(_inp)->inp_create_mtx); \ 324 } while (0) 325 #endif 326 327 #define SCTP_ASOC_CREATE_UNLOCK(_inp) do { \ 328 mtx_unlock(&(_inp)->inp_create_mtx); \ 329 } while (0) 330 331 #define SCTP_ASOC_CREATE_LOCK_CONTENDED(_inp) \ 332 ((_inp)->inp_create_mtx.mtx_lock & MTX_CONTESTED) 333 334 335 #define SCTP_TCB_SEND_LOCK_INIT(_tcb) do { \ 336 mtx_init(&(_tcb)->tcb_send_mtx, "sctp-send-tcb", "tcbs", \ 337 MTX_DEF | MTX_DUPOK); \ 338 } while (0) 339 340 #define SCTP_TCB_SEND_LOCK_DESTROY(_tcb) do { \ 341 mtx_destroy(&(_tcb)->tcb_send_mtx); \ 342 } while (0) 343 344 #define SCTP_TCB_SEND_LOCK(_tcb) do { \ 345 mtx_lock(&(_tcb)->tcb_send_mtx); \ 346 } while (0) 347 348 #define SCTP_TCB_SEND_UNLOCK(_tcb) do { \ 349 mtx_unlock(&(_tcb)->tcb_send_mtx); \ 350 } while (0) 351 352 /* 353 * For the majority of things (once we have found the association) we will 354 * lock the actual association mutex. This will protect all the assoiciation 355 * level queues and streams and such. We will need to lock the socket layer 356 * when we stuff data up into the receiving sb_mb. I.e. we will need to do an 357 * extra SOCKBUF_LOCK(&so->so_rcv) even though the association is locked. 358 */ 359 360 #define SCTP_TCB_LOCK_INIT(_tcb) do { \ 361 mtx_init(&(_tcb)->tcb_mtx, "sctp-tcb", "tcb", \ 362 MTX_DEF | MTX_DUPOK); \ 363 } while (0) 364 365 #define SCTP_TCB_LOCK_DESTROY(_tcb) do { \ 366 mtx_destroy(&(_tcb)->tcb_mtx); \ 367 } while (0) 368 369 #ifdef SCTP_LOCK_LOGGING 370 #define SCTP_TCB_LOCK(_tcb) do { \ 371 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) \ 372 sctp_log_lock(_tcb->sctp_ep, _tcb, SCTP_LOG_LOCK_TCB); \ 373 mtx_lock(&(_tcb)->tcb_mtx); \ 374 } while (0) 375 #else 376 #define SCTP_TCB_LOCK(_tcb) do { \ 377 mtx_lock(&(_tcb)->tcb_mtx); \ 378 } while (0) 379 380 #endif 381 382 #define SCTP_TCB_TRYLOCK(_tcb) \ 383 mtx_trylock(&(_tcb)->tcb_mtx) 384 385 #define SCTP_TCB_UNLOCK(_tcb) do { \ 386 mtx_unlock(&(_tcb)->tcb_mtx); \ 387 } while (0) 388 389 #define SCTP_TCB_UNLOCK_IFOWNED(_tcb) do { \ 390 if (mtx_owned(&(_tcb)->tcb_mtx)) \ 391 mtx_unlock(&(_tcb)->tcb_mtx); \ 392 } while (0) 393 394 #define SCTP_TCB_LOCK_ASSERT(_tcb) do { \ 395 KASSERT(mtx_owned(&(_tcb)->tcb_mtx), \ 396 ("Don't own TCB lock")); \ 397 } while (0) 398 399 400 #define SCTP_ITERATOR_LOCK_INIT() do { \ 401 mtx_init(&sctp_it_ctl.it_mtx, "sctp-it", "iterator", MTX_DEF); \ 402 } while (0) 403 404 #define SCTP_ITERATOR_LOCK_DESTROY() do { \ 405 mtx_destroy(&sctp_it_ctl.it_mtx); \ 406 } while (0) 407 408 #define SCTP_ITERATOR_LOCK() \ 409 do { \ 410 KASSERT(!mtx_owned(&sctp_it_ctl.it_mtx), \ 411 ("Own the iterator lock")); \ 412 mtx_lock(&sctp_it_ctl.it_mtx); \ 413 } while (0) 414 415 #define SCTP_ITERATOR_UNLOCK() do { \ 416 mtx_unlock(&sctp_it_ctl.it_mtx); \ 417 } while (0) 418 419 420 #define SCTP_WQ_ADDR_INIT() do { \ 421 mtx_init(&SCTP_BASE_INFO(wq_addr_mtx), \ 422 "sctp-addr-wq","sctp_addr_wq", MTX_DEF); \ 423 } while (0) 424 425 #define SCTP_WQ_ADDR_DESTROY() do { \ 426 if (mtx_owned(&SCTP_BASE_INFO(wq_addr_mtx))) { \ 427 mtx_unlock(&SCTP_BASE_INFO(wq_addr_mtx)); \ 428 } \ 429 mtx_destroy(&SCTP_BASE_INFO(wq_addr_mtx)); \ 430 } while (0) 431 432 #define SCTP_WQ_ADDR_LOCK() do { \ 433 mtx_lock(&SCTP_BASE_INFO(wq_addr_mtx)); \ 434 } while (0) 435 436 #define SCTP_WQ_ADDR_UNLOCK() do { \ 437 mtx_unlock(&SCTP_BASE_INFO(wq_addr_mtx)); \ 438 } while (0) 439 440 #define SCTP_WQ_ADDR_LOCK_ASSERT() do { \ 441 KASSERT(mtx_owned(&SCTP_BASE_INFO(wq_addr_mtx)), \ 442 ("Don't own the ADDR-WQ lock")); \ 443 } while (0) 444 445 #define SCTP_INCR_EP_COUNT() do { \ 446 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ep), 1); \ 447 } while (0) 448 449 #define SCTP_DECR_EP_COUNT() do { \ 450 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ep), 1); \ 451 } while (0) 452 453 #define SCTP_INCR_ASOC_COUNT() do { \ 454 atomic_add_int(&SCTP_BASE_INFO(ipi_count_asoc), 1); \ 455 } while (0) 456 457 #define SCTP_DECR_ASOC_COUNT() do { \ 458 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_asoc), 1); \ 459 } while (0) 460 461 #define SCTP_INCR_LADDR_COUNT() do { \ 462 atomic_add_int(&SCTP_BASE_INFO(ipi_count_laddr), 1); \ 463 } while (0) 464 465 #define SCTP_DECR_LADDR_COUNT() do { \ 466 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_laddr), 1); \ 467 } while (0) 468 469 #define SCTP_INCR_RADDR_COUNT() do { \ 470 atomic_add_int(&SCTP_BASE_INFO(ipi_count_raddr), 1); \ 471 } while (0) 472 473 #define SCTP_DECR_RADDR_COUNT() do { \ 474 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_raddr),1); \ 475 } while (0) 476 477 #define SCTP_INCR_CHK_COUNT() do { \ 478 atomic_add_int(&SCTP_BASE_INFO(ipi_count_chunk), 1); \ 479 } while (0) 480 481 #define SCTP_DECR_CHK_COUNT() do { \ 482 KASSERT(SCTP_BASE_INFO(ipi_count_chunk) > 0, \ 483 ("ipi_count_chunk would become negative")); \ 484 if (SCTP_BASE_INFO(ipi_count_chunk) != 0) \ 485 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_chunk), \ 486 1); \ 487 } while (0) 488 489 #define SCTP_INCR_READQ_COUNT() do { \ 490 atomic_add_int(&SCTP_BASE_INFO(ipi_count_readq), 1); \ 491 } while (0) 492 493 #define SCTP_DECR_READQ_COUNT() do { \ 494 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_readq), 1); \ 495 } while (0) 496 497 #define SCTP_INCR_STRMOQ_COUNT() do { \ 498 atomic_add_int(&SCTP_BASE_INFO(ipi_count_strmoq), 1); \ 499 } while (0) 500 501 #define SCTP_DECR_STRMOQ_COUNT() do { \ 502 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_strmoq), 1); \ 503 } while (0) 504 505 #if defined(SCTP_SO_LOCK_TESTING) 506 #define SCTP_INP_SO(sctpinp) \ 507 (sctpinp)->ip_inp.inp.inp_socket 508 #define SCTP_SOCKET_LOCK(so, refcnt) 509 #define SCTP_SOCKET_UNLOCK(so, refcnt) 510 #endif 511 512 #endif 513