1 /* $KAME: sctp_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $ */ 2 /* $NetBSD: sctp_pcb.h,v 1.8 2023/06/02 08:51:48 andvar Exp $ */ 3 4 #ifndef __SCTP_PCB_H__ 5 #define __SCTP_PCB_H__ 6 7 /* 8 * Copyright (c) 2001, 2002, 2003, 2004 Cisco Systems, Inc. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Cisco Systems, Inc. 22 * 4. Neither the name of the project nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY CISCO SYSTEMS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL CISCO SYSTEMS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 /* 40 * We must have V6 so the size of the proto can be calculated. Otherwise 41 * we would not allocate enough for Net/Open BSD :-< 42 */ 43 #include <net/if.h> 44 #include <netinet/in_pcb.h> 45 #include <netinet/ip6.h> 46 #include <netinet6/ip6_var.h> 47 #include <netinet6/ip6protosw.h> 48 #include <netinet6/in6_var.h> 49 #include <netinet6/in6_pcb.h> 50 51 #include <netinet/sctp.h> 52 #include <netinet/sctp_constants.h> 53 54 LIST_HEAD(sctppcbhead, sctp_inpcb); 55 LIST_HEAD(sctpasochead, sctp_tcb); 56 TAILQ_HEAD(sctpsocketq, sctp_socket_q_list); 57 LIST_HEAD(sctpladdr, sctp_laddr); 58 LIST_HEAD(sctpvtaghead, sctp_tagblock); 59 60 #include <netinet/sctp_structs.h> 61 #include <netinet/sctp_uio.h> 62 63 /* 64 * PCB flags 65 */ 66 #define SCTP_PCB_FLAGS_UDPTYPE 0x00000001 67 #define SCTP_PCB_FLAGS_TCPTYPE 0x00000002 68 #define SCTP_PCB_FLAGS_BOUNDALL 0x00000004 69 #define SCTP_PCB_FLAGS_ACCEPTING 0x00000008 70 #define SCTP_PCB_FLAGS_UNBOUND 0x00000010 71 #define SCTP_PCB_FLAGS_DO_ASCONF 0x00000020 72 #define SCTP_PCB_FLAGS_AUTO_ASCONF 0x00000040 73 /* socket options */ 74 #define SCTP_PCB_FLAGS_NODELAY 0x00000100 75 #define SCTP_PCB_FLAGS_AUTOCLOSE 0x00000200 76 #define SCTP_PCB_FLAGS_RECVDATAIOEVNT 0x00000400 77 #define SCTP_PCB_FLAGS_RECVASSOCEVNT 0x00000800 78 #define SCTP_PCB_FLAGS_RECVPADDREVNT 0x00001000 79 #define SCTP_PCB_FLAGS_RECVPEERERR 0x00002000 80 #define SCTP_PCB_FLAGS_RECVSENDFAILEVNT 0x00004000 81 #define SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT 0x00008000 82 #define SCTP_PCB_FLAGS_ADAPTIONEVNT 0x00010000 83 #define SCTP_PCB_FLAGS_PDAPIEVNT 0x00020000 84 #define SCTP_PCB_FLAGS_STREAM_RESETEVNT 0x00040000 85 #define SCTP_PCB_FLAGS_NO_FRAGMENT 0x00080000 86 /* TCP model support */ 87 #define SCTP_PCB_FLAGS_CONNECTED 0x00100000 88 #define SCTP_PCB_FLAGS_IN_TCPPOOL 0x00200000 89 #define SCTP_PCB_FLAGS_DONT_WAKE 0x00400000 90 #define SCTP_PCB_FLAGS_WAKEOUTPUT 0x00800000 91 #define SCTP_PCB_FLAGS_WAKEINPUT 0x01000000 92 #define SCTP_PCB_FLAGS_BOUND_V6 0x02000000 93 #define SCTP_PCB_FLAGS_NEEDS_MAPPED_V4 0x04000000 94 #define SCTP_PCB_FLAGS_BLOCKING_IO 0x08000000 95 #define SCTP_PCB_FLAGS_SOCKET_GONE 0x10000000 96 #define SCTP_PCB_FLAGS_SOCKET_ALLGONE 0x20000000 97 98 /* flags to copy to new PCB */ 99 #define SCTP_PCB_COPY_FLAGS 0x0707ff64 100 101 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask) 102 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask) 103 104 struct sctp_laddr { 105 LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */ 106 struct ifaddr *ifa; 107 }; 108 109 struct sctp_timewait { 110 uint32_t tv_sec_at_expire; /* the seconds from boot to expire */ 111 uint32_t v_tag; /* the vtag that can not be reused */ 112 }; 113 114 struct sctp_tagblock { 115 LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock; 116 struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK]; 117 }; 118 119 struct sctp_epinfo { 120 struct sctpasochead *sctp_asochash; 121 u_long hashasocmark; 122 123 struct sctppcbhead *sctp_ephash; 124 u_long hashmark; 125 126 /* 127 * The TCP model represents a substantial overhead in that we get 128 * an additional hash table to keep explicit connections in. The 129 * listening TCP endpoint will exist in the usual ephash above and 130 * accept only INIT's. It will be incapable of sending off an INIT. 131 * When a dg arrives we must look in the normal ephash. If we find 132 * a TCP endpoint that will tell us to go to the specific endpoint 133 * hash and re-hash to find the right assoc/socket. If we find a 134 * UDP model socket we then must complete the lookup. If this fails, 135 * i.e. no association can be found then we must continue to see if 136 * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket 137 * acts like a TCP model connected socket). 138 */ 139 struct sctppcbhead *sctp_tcpephash; 140 u_long hashtcpmark; 141 uint32_t hashtblsize; 142 143 struct sctppcbhead listhead; 144 145 struct sctpiterators iteratorhead; 146 147 /* ep zone info */ 148 #if defined(__FreeBSD__) || defined(__APPLE__) 149 #if __FreeBSD_version >= 500000 150 struct uma_zone *ipi_zone_ep; 151 struct uma_zone *ipi_zone_asoc; 152 struct uma_zone *ipi_zone_laddr; 153 struct uma_zone *ipi_zone_net; 154 struct uma_zone *ipi_zone_chunk; 155 struct uma_zone *ipi_zone_sockq; 156 #else 157 struct vm_zone *ipi_zone_ep; 158 struct vm_zone *ipi_zone_asoc; 159 struct vm_zone *ipi_zone_laddr; 160 struct vm_zone *ipi_zone_net; 161 struct vm_zone *ipi_zone_chunk; 162 struct vm_zone *ipi_zone_sockq; 163 #endif 164 #endif 165 #if defined(__NetBSD__) || defined(__OpenBSD__) 166 struct pool ipi_zone_ep; 167 struct pool ipi_zone_asoc; 168 struct pool ipi_zone_laddr; 169 struct pool ipi_zone_net; 170 struct pool ipi_zone_chunk; 171 struct pool ipi_zone_sockq; 172 struct pool ipi_zone_hash; 173 #endif 174 175 #if defined(__FreeBSD__) && __FreeBSD_version >= 503000 176 struct mtx ipi_ep_mtx; 177 struct mtx it_mtx; 178 #elif 0 /* defined(__NetBSD__) */ 179 krwlock_t ipi_ep_mtx; 180 kmutex_t it_mtx; 181 #endif 182 u_int ipi_count_ep; 183 u_quad_t ipi_gencnt_ep; 184 185 /* assoc/tcb zone info */ 186 u_int ipi_count_asoc; 187 u_quad_t ipi_gencnt_asoc; 188 189 /* local addrlist zone info */ 190 u_int ipi_count_laddr; 191 u_quad_t ipi_gencnt_laddr; 192 193 /* remote addrlist zone info */ 194 u_int ipi_count_raddr; 195 u_quad_t ipi_gencnt_raddr; 196 197 /* chunk structure list for output */ 198 u_int ipi_count_chunk; 199 u_quad_t ipi_gencnt_chunk; 200 201 /* socket queue zone info */ 202 u_int ipi_count_sockq; 203 u_quad_t ipi_gencnt_sockq; 204 205 struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE]; 206 207 #ifdef _SCTP_NEEDS_CALLOUT_ 208 struct calloutlist callqueue; 209 #endif /* _SCTP_NEEDS_CALLOUT_ */ 210 211 uint32_t mbuf_track; 212 213 /* for port allocations */ 214 uint16_t lastport; 215 uint16_t lastlow; 216 uint16_t lasthi; 217 218 }; 219 220 extern uint32_t sctp_pegs[SCTP_NUMBER_OF_PEGS]; 221 /* 222 * Here we have all the relevant information for each SCTP entity created. 223 * We will need to modify this as approprate. We also need to figure out 224 * how to access /dev/random. 225 */ 226 struct sctp_pcb { 227 unsigned int time_of_secret_change; /* number of seconds from timeval.tv_sec */ 228 uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS]; 229 unsigned int size_of_a_cookie; 230 231 unsigned int sctp_timeoutticks[SCTP_NUM_TMRS]; 232 unsigned int sctp_minrto; 233 unsigned int sctp_maxrto; 234 unsigned int initial_rto; 235 236 int initial_init_rto_max; 237 238 uint32_t sctp_sws_sender; 239 uint32_t sctp_sws_receiver; 240 241 /* various thresholds */ 242 /* Max times I will init at a guy */ 243 uint16_t max_init_times; 244 245 /* Max times I will send before we consider someone dead */ 246 uint16_t max_send_times; 247 248 uint16_t def_net_failure; 249 250 /* number of streams to pre-open on a association */ 251 uint16_t pre_open_stream_count; 252 uint16_t max_open_streams_intome; 253 254 /* 255 * This timer is kept running per endpoint. When it fires it 256 * will change the secret key. The default is once a hour 257 */ 258 struct sctp_timer signature_change; 259 int def_cookie_life; 260 /* defaults to 0 */ 261 int auto_close_time; 262 uint32_t initial_sequence_debug; 263 uint32_t adaption_layer_indicator; 264 uint8_t max_burst; 265 char current_secret_number; 266 char last_secret_number; 267 }; 268 269 #ifndef SCTP_ALIGNMENT 270 #define SCTP_ALIGNMENT 32 271 #endif 272 273 #ifndef SCTP_ALIGNM1 274 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1) 275 #endif 276 277 #define sctp_lport ip_inp.inp.inp_lport 278 279 struct sctp_socket_q_list { 280 struct sctp_tcb *tcb; 281 TAILQ_ENTRY(sctp_socket_q_list) next_sq; 282 }; 283 284 struct sctp_inpcb { 285 /* 286 * put an inpcb in front of it all, kind of a waste but we need 287 * to for compatibility with all the other stuff. 288 */ 289 union { 290 struct inpcb inp; 291 char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) & 292 ~SCTP_ALIGNM1]; 293 } ip_inp; 294 LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */ 295 /* hash of all endpoints for model */ 296 LIST_ENTRY(sctp_inpcb) sctp_hash; 297 298 /* count of local addresses bound, 0 if bound all */ 299 int laddr_count; 300 /* list of addrs in use by the EP */ 301 struct sctpladdr sctp_addr_list; 302 /* used for source address selection rotation */ 303 struct sctp_laddr *next_addr_touse; 304 struct ifnet *next_ifn_touse; 305 /* back pointer to our socket */ 306 struct socket *sctp_socket; 307 uint32_t sctp_flags; /* flag set */ 308 struct sctp_pcb sctp_ep; /* SCTP ep data */ 309 /* head of the hash of all associations */ 310 struct sctpasochead *sctp_tcbhash; 311 u_long sctp_hashmark; 312 /* head of the list of all associations */ 313 struct sctpasochead sctp_asoc_list; 314 /* queue of TCB's waiting to stuff data up the socket */ 315 struct sctpsocketq sctp_queue_list; 316 void *sctp_tcb_at_block; 317 struct sctp_iterator *inp_starting_point_for_iterator; 318 int error_on_block; 319 uint32_t sctp_frag_point; 320 uint32_t sctp_vtag_first; 321 struct mbuf *pkt, *pkt_last, *sb_last_mpkt; 322 struct mbuf *control; 323 #if !(defined(__FreeBSD__) || defined(__APPLE__)) 324 #ifndef INP_IPV6 325 #define INP_IPV6 0x1 326 #endif 327 #ifndef INP_IPV4 328 #define INP_IPV4 0x2 329 #endif 330 u_char inp_vflag; 331 u_char inp_ip_ttl; 332 u_char inp_ip_tos; 333 u_char inp_ip_resv; 334 #endif 335 #if defined(__FreeBSD__) && __FreeBSD_version >= 503000 336 struct mtx inp_mtx; 337 struct mtx inp_create_mtx; 338 u_int32_t refcount; 339 #elif defined(__NetBSD__) 340 kmutex_t inp_mtx; 341 kmutex_t inp_create_mtx; 342 u_int32_t refcount; 343 #endif 344 }; 345 346 struct sctp_tcb { 347 struct socket *sctp_socket; /* back pointer to socket */ 348 struct sctp_inpcb *sctp_ep; /* back pointer to ep */ 349 LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash table */ 350 LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the TCB's */ 351 LIST_ENTRY(sctp_tcb) sctp_asocs; 352 struct sctp_association asoc; 353 uint16_t rport; /* remote port in network format */ 354 uint16_t resv; 355 #if defined(__FreeBSD__) && __FreeBSD_version >= 503000 356 struct mtx tcb_mtx; 357 #elif defined(__NetBSD__) 358 kmutex_t tcb_mtx; 359 #endif 360 }; 361 362 #if defined(__FreeBSD__) && __FreeBSD_version >= 503000 363 364 /* General locking concepts: 365 * The goal of our locking is to of course provide 366 * consistency and yet minimize overhead. We will 367 * attempt to use non-recursive locks which are supposed 368 * to be quite inexpensive. Now in order to do this the goal 369 * is that most functions are not aware of locking. Once we 370 * have a TCB we lock it and unlock when we are through. This 371 * means that the TCB lock is kind-of a "global" lock when 372 * working on an association. Caution must be used when 373 * asserting a TCB_LOCK since if we recurse we deadlock. 374 * 375 * Most other locks (INP and INFO) attempt to localize 376 * the locking i.e. we try to contain the lock and 377 * unlock within the function that needs to lock it. This 378 * sometimes mean we do extra locks and unlocks and lose 379 * a bit of efficiency, but if the performance statements about 380 * non-recursive locks are true this should not be a problem. 381 * One issue that arises with this only lock when needed 382 * is that if an implicit association setup is done we 383 * have a problem. If at the time I lookup an association 384 * I have NULL in the tcb return, by the time I call to 385 * create the association some other processor could 386 * have created it. This is what the CREATE lock on 387 * the endpoint. Places where we will be implicitly 388 * creating the association OR just creating an association 389 * (the connect call) will assert the CREATE_INP lock. This 390 * will assure us that during all the lookup of INP and INFO 391 * if another creator is also locking/looking up we can 392 * gate the two to synchronize. So the CREATE_INP lock is 393 * also another one we must use extreme caution in locking 394 * to make sure we don't hit a re-entrancy issue. 395 * 396 * For non FreeBSD 5.x and above we provide a bunch 397 * of EMPTY lock macro's so we can blatantly put locks 398 * everywhere and they reduce to nothing on NetBSD/OpenBSD 399 * and FreeBSD 4.x 400 * 401 */ 402 403 404 /* When working with the global SCTP lists we lock and unlock 405 * the INP_INFO lock. So when we go to lookup an association 406 * we will want to do a SCTP_INP_INFO_RLOCK() and then when 407 * we want to add a new association to the sctppcbinfo list's 408 * we will do a SCTP_INP_INFO_WLOCK(). 409 */ 410 411 /* 412 * FIX ME, all locks right now have a 413 * recursive check/panic to validate that I 414 * don't have any lock recursion going on. 415 */ 416 417 #define SCTP_INP_INFO_LOCK_INIT() \ 418 mtx_init(&sctppcbinfo.ipi_ep_mtx, "sctp", "inp_info", MTX_DEF) 419 420 #ifdef xyzzy 421 #define SCTP_INP_INFO_RLOCK() do { \ 422 if (mtx_owned(&sctppcbinfo.ipi_ep_mtx)) \ 423 panic("INP INFO Recursive Lock-R"); \ 424 mtx_lock(&sctppcbinfo.ipi_ep_mtx); \ 425 } while (0) 426 427 #define SCTP_INP_INFO_WLOCK() do { \ 428 if (mtx_owned(&sctppcbinfo.ipi_ep_mtx)) \ 429 panic("INP INFO Recursive Lock-W"); \ 430 mtx_lock(&sctppcbinfo.ipi_ep_mtx); \ 431 } while (0) 432 433 #else 434 435 void SCTP_INP_INFO_RLOCK(void); 436 void SCTP_INP_INFO_WLOCK(void); 437 438 #endif 439 440 #define SCTP_INP_INFO_RUNLOCK() mtx_unlock(&sctppcbinfo.ipi_ep_mtx) 441 #define SCTP_INP_INFO_WUNLOCK() mtx_unlock(&sctppcbinfo.ipi_ep_mtx) 442 443 /* The INP locks we will use for locking an SCTP endpoint, so for 444 * example if we want to change something at the endpoint level for 445 * example cookie secrets we lock the INP level. 446 */ 447 #define SCTP_INP_LOCK_INIT(_inp) \ 448 mtx_init(&(_inp)->inp_mtx, "sctp", "inp", MTX_DEF | MTX_DUPOK) 449 450 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \ 451 mtx_init(&(_inp)->inp_create_mtx, "sctp", "inp_create", \ 452 MTX_DEF | MTX_DUPOK) 453 454 #define SCTP_INP_LOCK_DESTROY(_inp) mtx_destroy(&(_inp)->inp_mtx) 455 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) mtx_destroy(&(_inp)->inp_create_mtx) 456 457 #ifdef xyzzy 458 #define SCTP_INP_RLOCK(_inp) do { \ 459 struct sctp_tcb *xx_stcb; \ 460 xx_stcb = LIST_FIRST(&_inp->sctp_asoc_list); \ 461 if (xx_stcb) \ 462 if (mtx_owned(&(xx_stcb)->tcb_mtx)) \ 463 panic("I own TCB lock?"); \ 464 if (mtx_owned(&(_inp)->inp_mtx)) \ 465 panic("INP Recursive Lock-R"); \ 466 mtx_lock(&(_inp)->inp_mtx); \ 467 } while (0) 468 469 #define SCTP_INP_WLOCK(_inp) do { \ 470 struct sctp_tcb *xx_stcb; \ 471 xx_stcb = LIST_FIRST(&_inp->sctp_asoc_list); \ 472 if (xx_stcb) \ 473 if (mtx_owned(&(xx_stcb)->tcb_mtx)) \ 474 panic("I own TCB lock?"); \ 475 if (mtx_owned(&(_inp)->inp_mtx)) \ 476 panic("INP Recursive Lock-W"); \ 477 mtx_lock(&(_inp)->inp_mtx); \ 478 } while (0) 479 480 #else 481 void SCTP_INP_RLOCK(struct sctp_inpcb *); 482 void SCTP_INP_WLOCK(struct sctp_inpcb *); 483 484 #endif 485 486 487 #define SCTP_INP_INCR_REF(_inp) _inp->refcount++ 488 489 #define SCTP_INP_DECR_REF(_inp) do { \ 490 if (_inp->refcount > 0) \ 491 _inp->refcount--; \ 492 else \ 493 panic("bad inp refcount"); \ 494 }while (0) 495 496 #define SCTP_ASOC_CREATE_LOCK(_inp) do { \ 497 if (mtx_owned(&(_inp)->inp_create_mtx)) \ 498 panic("INP Recursive CREATE"); \ 499 mtx_lock(&(_inp)->inp_create_mtx); \ 500 } while (0) 501 502 #define SCTP_INP_RUNLOCK(_inp) mtx_unlock(&(_inp)->inp_mtx) 503 #define SCTP_INP_WUNLOCK(_inp) mtx_unlock(&(_inp)->inp_mtx) 504 #define SCTP_ASOC_CREATE_UNLOCK(_inp) mtx_unlock(&(_inp)->inp_create_mtx) 505 506 /* For the majority of things (once we have found the association) we 507 * will lock the actual association mutex. This will protect all 508 * the assoiciation level queues and streams and such. We will 509 * need to lock the socket layer when we stuff data up into 510 * the receiving sb_mb. I.e. we will need to do an extra 511 * SOCKBUF_LOCK(&so->so_rcv) even though the association is 512 * locked. 513 */ 514 515 #define SCTP_TCB_LOCK_INIT(_tcb) \ 516 mutex_init(&(_tcb)->tcb_mtx, MUTEX_DEFAULT, IPL_NET) 517 #define SCTP_TCB_LOCK_DESTROY(_tcb) mtx_destroy(&(_tcb)->tcb_mtx) 518 #define SCTP_TCB_LOCK(_tcb) do { \ 519 if (!mtx_owned(&(_tcb->sctp_ep->inp_mtx))) \ 520 panic("TCB locking and no INP lock"); \ 521 if (mtx_owned(&(_tcb)->tcb_mtx)) \ 522 panic("TCB Lock-recursive"); \ 523 mtx_lock(&(_tcb)->tcb_mtx); \ 524 } while (0) 525 #define SCTP_TCB_UNLOCK(_tcb) mtx_unlock(&(_tcb)->tcb_mtx) 526 527 #define SCTP_ITERATOR_LOCK_INIT() \ 528 mtx_init(&sctppcbinfo.it_mtx, "sctp", "iterator", MTX_DEF) 529 #define SCTP_ITERATOR_LOCK() do { \ 530 if (mtx_owned(&sctppcbinfo.it_mtx)) \ 531 panic("Iterator Lock"); \ 532 mtx_lock(&sctppcbinfo.it_mtx); \ 533 } while (0) 534 535 #define SCTP_ITERATOR_UNLOCK() mtx_unlock(&sctppcbinfo.it_mtx) 536 #define SCTP_ITERATOR_LOCK_DESTROY() mtx_destroy(&sctppcbinfo.it_mtx) 537 #elif 0 /* defined(__NetBSD__) */ 538 #define SCTP_INP_INFO_LOCK_INIT() \ 539 rw_init(&sctppcbinfo.ipi_ep_mtx) 540 541 #define SCTP_INP_INFO_RLOCK() do { \ 542 rw_enter(&sctppcbinfo.ipi_ep_mtx, RW_READER); \ 543 } while (0) 544 545 #define SCTP_INP_INFO_WLOCK() do { \ 546 rw_enter(&sctppcbinfo.ipi_ep_mtx, RW_WRITER); \ 547 } while (0) 548 549 #define SCTP_INP_INFO_RUNLOCK() rw_exit(&sctppcbinfo.ipi_ep_mtx) 550 #define SCTP_INP_INFO_WUNLOCK() rw_exit(&sctppcbinfo.ipi_ep_mtx) 551 552 /* The INP locks we will use for locking an SCTP endpoint, so for 553 * example if we want to change something at the endpoint level for 554 * example cookie secrets we lock the INP level. 555 */ 556 #define SCTP_INP_LOCK_INIT(_inp) \ 557 mutex_init(&(_inp)->inp_mtx, MUTEX_DEFAULT, IPL_NET) 558 559 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \ 560 mutex_init(&(_inp)->inp_create_mtx, MUTEX_DEFAULT, IPL_NET) 561 562 #define SCTP_INP_LOCK_DESTROY(_inp) mutex_destroy(&(_inp)->inp_mtx) 563 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) mutex_destroy(&(_inp)->inp_create_mtx) 564 565 #define SCTP_INP_RLOCK(_inp) do { \ 566 mutex_enter(&(_inp)->inp_mtx); \ 567 } while (0) 568 569 #define SCTP_INP_WLOCK(_inp) do { \ 570 mutex_enter(&(_inp)->inp_mtx); \ 571 } while (0) 572 573 574 #define SCTP_INP_INCR_REF(_inp) atomic_add_int(&((_inp)->refcount), 1) 575 576 #define SCTP_INP_DECR_REF(_inp) atomic_add_int(&((_inp)->refcount), -1) 577 578 #define SCTP_ASOC_CREATE_LOCK(_inp) do { \ 579 mutex_enter(&(_inp)->inp_create_mtx); \ 580 } while (0) 581 582 #define SCTP_INP_RUNLOCK(_inp) mutex_exit(&(_inp)->inp_mtx) 583 #define SCTP_INP_WUNLOCK(_inp) mutex_exit(&(_inp)->inp_mtx) 584 #define SCTP_ASOC_CREATE_UNLOCK(_inp) mutex_exit(&(_inp)->inp_create_mtx) 585 586 /* For the majority of things (once we have found the association) we 587 * will lock the actual association mutex. This will protect all 588 * the assoiciation level queues and streams and such. We will 589 * need to lock the socket layer when we stuff data up into 590 * the receiving sb_mb. I.e. we will need to do an extra 591 * SOCKBUF_LOCK(&so->so_rcv) even though the association is 592 * locked. 593 */ 594 595 #define SCTP_TCB_LOCK_INIT(_tcb) \ 596 mutex_init(&(_tcb)->tcb_mtx, MUTEX_DEFAULT, IPL_NET) 597 #define SCTP_TCB_LOCK_DESTROY(_tcb) mutex_destroy(&(_tcb)->tcb_mtx) 598 #define SCTP_TCB_LOCK(_tcb) do { \ 599 mutex_enter(&(_tcb)->tcb_mtx); \ 600 } while (0) 601 #define SCTP_TCB_UNLOCK(_tcb) mutex_exit(&(_tcb)->tcb_mtx) 602 603 #define SCTP_ITERATOR_LOCK_INIT() \ 604 mutex_init(&sctppcbinfo.it_mtx, MUTEX_DEFAULT, IPL_NET) 605 #define SCTP_ITERATOR_LOCK() do { \ 606 if (mutex_owned(&sctppcbinfo.it_mtx)) \ 607 panic("Iterator Lock"); \ 608 mutex_enter(&sctppcbinfo.it_mtx); \ 609 } while (0) 610 611 #define SCTP_ITERATOR_UNLOCK() mutex_exit(&sctppcbinfo.it_mtx) 612 #define SCTP_ITERATOR_LOCK_DESTROY() mutex_destroy(&sctppcbinfo.it_mtx) 613 #else 614 615 /* Empty Lock declarations for all other 616 * platforms pre-process away to nothing. 617 */ 618 619 /* Lock for INFO stuff */ 620 #define SCTP_INP_INFO_LOCK_INIT() 621 #define SCTP_INP_INFO_RLOCK() 622 #define SCTP_INP_INFO_RLOCK() 623 #define SCTP_INP_INFO_WLOCK() 624 625 #define SCTP_INP_INFO_RUNLOCK() 626 #define SCTP_INP_INFO_WUNLOCK() 627 /* Lock for INP */ 628 #define SCTP_INP_LOCK_INIT(_inp) 629 #define SCTP_INP_LOCK_DESTROY(_inp) 630 #define SCTP_INP_RLOCK(_inp) 631 #define SCTP_INP_RUNLOCK(_inp) 632 #define SCTP_INP_WLOCK(_inp) 633 #define SCTP_INP_INCR_REF(_inp) 634 #define SCTP_INP_DECR_REF(_inp) 635 #define SCTP_INP_WUNLOCK(_inp) 636 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) 637 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) 638 #define SCTP_ASOC_CREATE_LOCK(_inp) 639 #define SCTP_ASOC_CREATE_UNLOCK(_inp) 640 /* Lock for TCB */ 641 #define SCTP_TCB_LOCK_INIT(_tcb) 642 #define SCTP_TCB_LOCK_DESTROY(_tcb) 643 #define SCTP_TCB_LOCK(_tcb) 644 #define SCTP_TCB_UNLOCK(_tcb) 645 /* iterator locks */ 646 #define SCTP_ITERATOR_LOCK_INIT() 647 #define SCTP_ITERATOR_LOCK() 648 #define SCTP_ITERATOR_UNLOCK() 649 #define SCTP_ITERATOR_LOCK_DESTROY() 650 #endif 651 652 #if defined(_KERNEL) 653 654 extern struct sctp_epinfo sctppcbinfo; 655 extern int sctp_auto_asconf; 656 657 int SCTP6_ARE_ADDR_EQUAL(const struct in6_addr *a, const struct in6_addr *b); 658 659 void sctp_fill_pcbinfo(struct sctp_pcbinfo *); 660 661 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *); 662 663 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int); 664 665 int sctp_inpcb_bind(struct socket *, struct sockaddr *, struct lwp *); 666 667 struct sctp_tcb *sctp_findassociation_addr(struct mbuf *, int, int, 668 struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **, 669 struct sctp_nets **); 670 671 struct sctp_tcb *sctp_findassociation_addr_sa(struct sockaddr *, 672 struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int); 673 674 void sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *, 675 struct sctp_tcb *); 676 677 /* 678 * For this call ep_addr, the to is the destination endpoint address 679 * of the peer (relative to outbound). The from field is only used if 680 * the TCP model is enabled and helps distingush amongst the subset 681 * bound (non-boundall). The TCP model MAY change the actual ep field, 682 * this is why it is passed. 683 */ 684 struct sctp_tcb *sctp_findassociation_ep_addr(struct sctp_inpcb **, 685 struct sockaddr *, struct sctp_nets **, struct sockaddr *, struct sctp_tcb *); 686 687 struct sctp_tcb *sctp_findassociation_ep_asocid(struct sctp_inpcb *, vaddr_t); 688 689 struct sctp_tcb *sctp_findassociation_ep_asconf(struct mbuf *, int, int, 690 struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **); 691 692 int sctp_inpcb_alloc(struct socket *); 693 694 695 int sctp_is_address_on_local_host(struct sockaddr *addr); 696 697 void sctp_inpcb_free(struct sctp_inpcb *, int); 698 699 struct sctp_tcb *sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, 700 int, int *, uint32_t); 701 702 void sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *); 703 704 int sctp_add_local_addr_ep(struct sctp_inpcb *, struct ifaddr *); 705 706 int sctp_insert_laddr(struct sctpladdr *, struct ifaddr *); 707 708 void sctp_remove_laddr(struct sctp_laddr *); 709 710 int sctp_del_local_addr_ep(struct sctp_inpcb *, struct ifaddr *); 711 712 int sctp_del_local_addr_ep_sa(struct sctp_inpcb *, struct sockaddr *); 713 714 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int); 715 716 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *); 717 718 void sctp_pcb_init(void); 719 720 void sctp_free_remote_addr(struct sctp_nets *); 721 722 int sctp_add_local_addr_assoc(struct sctp_tcb *, struct ifaddr *); 723 724 int sctp_del_local_addr_assoc(struct sctp_tcb *, struct ifaddr *); 725 726 int sctp_del_local_addr_assoc_sa(struct sctp_tcb *, struct sockaddr *); 727 728 int sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int, 729 int, struct sctphdr *, struct sockaddr *); 730 731 int sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets *); 732 733 int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, struct timeval *); 734 735 /*void sctp_drain(void);*/ 736 737 int sctp_destination_is_reachable(struct sctp_tcb *, const struct sockaddr *); 738 739 int sctp_add_to_socket_q(struct sctp_inpcb *, struct sctp_tcb *); 740 741 struct sctp_tcb *sctp_remove_from_socket_q(struct sctp_inpcb *); 742 743 744 /* Null in last arg inpcb indicate run on ALL ep's. Specific 745 * inp in last arg indicates run on ONLY assoc's of the 746 * specified endpoint. 747 */ 748 int 749 sctp_initiate_iterator(asoc_func af, uint32_t, uint32_t, void *, uint32_t, 750 end_func ef, struct sctp_inpcb *); 751 752 void in6_sin6_2_sin (struct sockaddr_in *, 753 struct sockaddr_in6 *sin6); 754 755 #ifdef __NetBSD__ 756 #ifndef sotoin6pcb 757 #define sotoin6pcb(so) ((struct in6pcb *)((so)->so_pcb)) 758 #endif 759 #ifndef in6p_flags 760 #define in6p_flags in6p_pcb.inp_flags 761 #endif 762 #ifndef in6p_af 763 #define in6p_af in6p_pcb.inp_af 764 #endif 765 #ifndef inpcb_hdr 766 #define inpcb_hdr inpcb 767 #endif 768 #ifndef sp_inph 769 #define sp_inph sp_inp 770 #endif 771 #endif 772 773 #endif /* _KERNEL */ 774 #endif /* !__SCTP_PCB_H__ */ 775
Indexes created Sat Sep 20 22:09:52 GMT 2025