sys/netinet/sctp_lock_bsd.h

   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