sctp_pcb.h revision 1.1
1 /* $KAME: sctp_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $ */ 2 /* $NetBSD: sctp_pcb.h,v 1.1 2015/10/13 21:28:35 rjs 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/ip6.h> 45 #include <netinet6/ip6_var.h> 46 #include <netinet6/ip6protosw.h> 47 #include <netinet6/in6_var.h> 48 #include <netinet6/in6_pcb.h> 49 50 #include <netinet/sctp.h> 51 #include <netinet/sctp_constants.h> 52 53 LIST_HEAD(sctppcbhead, sctp_inpcb); 54 LIST_HEAD(sctpasochead, sctp_tcb); 55 TAILQ_HEAD(sctpsocketq, sctp_socket_q_list); 56 LIST_HEAD(sctpladdr, sctp_laddr); 57 LIST_HEAD(sctpvtaghead, sctp_tagblock); 58 59 #include <netinet/sctp_structs.h> 60 #include <netinet/sctp_uio.h> 61 62 /* 63 * PCB flags 64 */ 65 #define SCTP_PCB_FLAGS_UDPTYPE 0x00000001 66 #define SCTP_PCB_FLAGS_TCPTYPE 0x00000002 67 #define SCTP_PCB_FLAGS_BOUNDALL 0x00000004 68 #define SCTP_PCB_FLAGS_ACCEPTING 0x00000008 69 #define SCTP_PCB_FLAGS_UNBOUND 0x00000010 70 #define SCTP_PCB_FLAGS_DO_ASCONF 0x00000020 71 #define SCTP_PCB_FLAGS_AUTO_ASCONF 0x00000040 72 /* socket options */ 73 #define SCTP_PCB_FLAGS_NODELAY 0x00000100 74 #define SCTP_PCB_FLAGS_AUTOCLOSE 0x00000200 75 #define SCTP_PCB_FLAGS_RECVDATAIOEVNT 0x00000400 76 #define SCTP_PCB_FLAGS_RECVASSOCEVNT 0x00000800 77 #define SCTP_PCB_FLAGS_RECVPADDREVNT 0x00001000 78 #define SCTP_PCB_FLAGS_RECVPEERERR 0x00002000 79 #define SCTP_PCB_FLAGS_RECVSENDFAILEVNT 0x00004000 80 #define SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT 0x00008000 81 #define SCTP_PCB_FLAGS_ADAPTIONEVNT 0x00010000 82 #define SCTP_PCB_FLAGS_PDAPIEVNT 0x00020000 83 #define SCTP_PCB_FLAGS_STREAM_RESETEVNT 0x00040000 84 #define SCTP_PCB_FLAGS_NO_FRAGMENT 0x00080000 85 /* TCP model support */ 86 #define SCTP_PCB_FLAGS_CONNECTED 0x00100000 87 #define SCTP_PCB_FLAGS_IN_TCPPOOL 0x00200000 88 #define SCTP_PCB_FLAGS_DONT_WAKE 0x00400000 89 #define SCTP_PCB_FLAGS_WAKEOUTPUT 0x00800000 90 #define SCTP_PCB_FLAGS_WAKEINPUT 0x01000000 91 #define SCTP_PCB_FLAGS_BOUND_V6 0x02000000 92 #define SCTP_PCB_FLAGS_NEEDS_MAPPED_V4 0x04000000 93 #define SCTP_PCB_FLAGS_BLOCKING_IO 0x08000000 94 #define SCTP_PCB_FLAGS_SOCKET_GONE 0x10000000 95 #define SCTP_PCB_FLAGS_SOCKET_ALLGONE 0x20000000 96 97 /* flags to copy to new PCB */ 98 #define SCTP_PCB_COPY_FLAGS 0x0707ff64 99 100 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask) 101 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask) 102 103 struct sctp_laddr { 104 LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */ 105 struct ifaddr *ifa; 106 }; 107 108 struct sctp_timewait { 109 uint32_t tv_sec_at_expire; /* the seconds from boot to expire */ 110 uint32_t v_tag; /* the vtag that can not be reused */ 111 }; 112 113 struct sctp_tagblock { 114 LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock; 115 struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK]; 116 }; 117 118 struct sctp_epinfo { 119 struct sctpasochead *sctp_asochash; 120 u_long hashasocmark; 121 122 struct sctppcbhead *sctp_ephash; 123 u_long hashmark; 124 125 /* 126 * The TCP model represents a substantial overhead in that we get 127 * an additional hash table to keep explicit connections in. The 128 * listening TCP endpoint will exist in the usual ephash above and 129 * accept only INIT's. It will be incapable of sending off an INIT. 130 * When a dg arrives we must look in the normal ephash. If we find 131 * a TCP endpoint that will tell us to go to the specific endpoint 132 * hash and re-hash to find the right assoc/socket. If we find a 133 * UDP model socket we then must complete the lookup. If this fails, 134 * i.e. no association can be found then we must continue to see if 135 * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket 136 * acts like a TCP model connected socket). 137 */ 138 struct sctppcbhead *sctp_tcpephash; 139 u_long hashtcpmark; 140 uint32_t hashtblsize; 141 142 struct sctppcbhead listhead; 143 144 struct sctpiterators iteratorhead; 145 146 /* ep zone info */ 147 #if defined(__FreeBSD__) || defined(__APPLE__) 148 #if __FreeBSD_version >= 500000 149 struct uma_zone *ipi_zone_ep; 150 struct uma_zone *ipi_zone_asoc; 151 struct uma_zone *ipi_zone_laddr; 152 struct uma_zone *ipi_zone_net; 153 struct uma_zone *ipi_zone_chunk; 154 struct uma_zone *ipi_zone_sockq; 155 #else 156 struct vm_zone *ipi_zone_ep; 157 struct vm_zone *ipi_zone_asoc; 158 struct vm_zone *ipi_zone_laddr; 159 struct vm_zone *ipi_zone_net; 160 struct vm_zone *ipi_zone_chunk; 161 struct vm_zone *ipi_zone_sockq; 162 #endif 163 #endif 164 #if defined(__NetBSD__) || defined(__OpenBSD__) 165 struct pool ipi_zone_ep; 166 struct pool ipi_zone_asoc; 167 struct pool ipi_zone_laddr; 168 struct pool ipi_zone_net; 169 struct pool ipi_zone_chunk; 170 struct pool ipi_zone_sockq; 171 struct pool ipi_zone_hash; 172 #endif 173 174 #if defined(__FreeBSD__) && __FreeBSD_version >= 503000 175 struct mtx ipi_ep_mtx; 176 struct mtx it_mtx; 177 #elif 0 /* defined(__NetBSD__) */ 178 krwlock_t ipi_ep_mtx; 179 kmutex_t it_mtx; 180 #endif 181 u_int ipi_count_ep; 182 u_quad_t ipi_gencnt_ep; 183 184 /* assoc/tcb zone info */ 185 u_int ipi_count_asoc; 186 u_quad_t ipi_gencnt_asoc; 187 188 /* local addrlist zone info */ 189 u_int ipi_count_laddr; 190 u_quad_t ipi_gencnt_laddr; 191 192 /* remote addrlist zone info */ 193 u_int ipi_count_raddr; 194 u_quad_t ipi_gencnt_raddr; 195 196 /* chunk structure list for output */ 197 u_int ipi_count_chunk; 198 u_quad_t ipi_gencnt_chunk; 199 200 /* socket queue zone info */ 201 u_int ipi_count_sockq; 202 u_quad_t ipi_gencnt_sockq; 203 204 struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE]; 205 206 #ifdef _SCTP_NEEDS_CALLOUT_ 207 struct calloutlist callqueue; 208 #endif /* _SCTP_NEEDS_CALLOUT_ */ 209 210 uint32_t mbuf_track; 211 212 /* for port allocations */ 213 uint16_t lastport; 214 uint16_t lastlow; 215 uint16_t lasthi; 216 217 }; 218 219 extern uint32_t sctp_pegs[SCTP_NUMBER_OF_PEGS]; 220 /* 221 * Here we have all the relevant information for each SCTP entity created. 222 * We will need to modify this as approprate. We also need to figure out 223 * how to access /dev/random. 224 */ 225 struct sctp_pcb { 226 unsigned int time_of_secret_change; /* number of seconds from timeval.tv_sec */ 227 uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS]; 228 unsigned int size_of_a_cookie; 229 230 unsigned int sctp_timeoutticks[SCTP_NUM_TMRS]; 231 unsigned int sctp_minrto; 232 unsigned int sctp_maxrto; 233 unsigned int initial_rto; 234 235 int initial_init_rto_max; 236 237 uint32_t sctp_sws_sender; 238 uint32_t sctp_sws_receiver; 239 240 /* various thresholds */ 241 /* Max times I will init at a guy */ 242 uint16_t max_init_times; 243 244 /* Max times I will send before we consider someone dead */ 245 uint16_t max_send_times; 246 247 uint16_t def_net_failure; 248 249 /* number of streams to pre-open on a association */ 250 uint16_t pre_open_stream_count; 251 uint16_t max_open_streams_intome; 252 253 /* random number generator */ 254 uint32_t random_counter; 255 uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE]; 256 uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE]; 257 258 /* 259 * This timer is kept running per endpoint. When it fires it 260 * will change the secret key. The default is once a hour 261 */ 262 struct sctp_timer signature_change; 263 int def_cookie_life; 264 /* defaults to 0 */ 265 int auto_close_time; 266 uint32_t initial_sequence_debug; 267 uint32_t adaption_layer_indicator; 268 char store_at; 269 uint8_t max_burst; 270 char current_secret_number; 271 char last_secret_number; 272 }; 273 274 #ifndef SCTP_ALIGNMENT 275 #define SCTP_ALIGNMENT 32 276 #endif 277 278 #ifndef SCTP_ALIGNM1 279 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1) 280 #endif 281 282 #define sctp_lport ip_inp.inp.inp_lport 283 284 struct sctp_socket_q_list { 285 struct sctp_tcb *tcb; 286 TAILQ_ENTRY(sctp_socket_q_list) next_sq; 287 }; 288 289 struct sctp_inpcb { 290 /* 291 * put an inpcb in front of it all, kind of a waste but we need 292 * to for compatability with all the other stuff. 293 */ 294 union { 295 struct inpcb inp; 296 char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) & 297 ~SCTP_ALIGNM1]; 298 } ip_inp; 299 LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */ 300 /* hash of all endpoints for model */ 301 LIST_ENTRY(sctp_inpcb) sctp_hash; 302 303 /* count of local addresses bound, 0 if bound all */ 304 int laddr_count; 305 /* list of addrs in use by the EP */ 306 struct sctpladdr sctp_addr_list; 307 /* used for source address selection rotation */ 308 struct sctp_laddr *next_addr_touse; 309 struct ifnet *next_ifn_touse; 310 /* back pointer to our socket */ 311 struct socket *sctp_socket; 312 uint32_t sctp_flags; /* flag set */ 313 struct sctp_pcb sctp_ep; /* SCTP ep data */ 314 /* head of the hash of all associations */ 315 struct sctpasochead *sctp_tcbhash; 316 u_long sctp_hashmark; 317 /* head of the list of all associations */ 318 struct sctpasochead sctp_asoc_list; 319 /* queue of TCB's waiting to stuff data up the socket */ 320 struct sctpsocketq sctp_queue_list; 321 void *sctp_tcb_at_block; 322 struct sctp_iterator *inp_starting_point_for_iterator; 323 int error_on_block; 324 uint32_t sctp_frag_point; 325 uint32_t sctp_vtag_first; 326 struct mbuf *pkt, *pkt_last, *sb_last_mpkt; 327 struct mbuf *control; 328 #if !(defined(__FreeBSD__) || defined(__APPLE__)) 329 #ifndef INP_IPV6 330 #define INP_IPV6 0x1 331 #endif 332 #ifndef INP_IPV4 333 #define INP_IPV4 0x2 334 #endif 335 u_char inp_vflag; 336 u_char inp_ip_ttl; 337 u_char inp_ip_tos; 338 u_char inp_ip_resv; 339 #endif 340 #if defined(__FreeBSD__) && __FreeBSD_version >= 503000 341 struct mtx inp_mtx; 342 struct mtx inp_create_mtx; 343 u_int32_t refcount; 344 #elif defined(__NetBSD__) 345 kmutex_t inp_mtx; 346 kmutex_t inp_create_mtx; 347 u_int32_t refcount; 348 #endif 349 }; 350 351 struct sctp_tcb { 352 struct socket *sctp_socket; /* back pointer to socket */ 353 struct sctp_inpcb *sctp_ep; /* back pointer to ep */ 354 LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash table */ 355 LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the TCB's */ 356 LIST_ENTRY(sctp_tcb) sctp_asocs; 357 struct sctp_association asoc; 358 uint16_t rport; /* remote port in network format */ 359 uint16_t resv; 360 #if defined(__FreeBSD__) && __FreeBSD_version >= 503000 361 struct mtx tcb_mtx; 362 #elif defined(__NetBSD__) 363 kmutex_t tcb_mtx; 364 #endif 365 }; 366 367 #if defined(__FreeBSD__) && __FreeBSD_version >= 503000 368 369 /* General locking concepts: 370 * The goal of our locking is to of course provide 371 * consistency and yet minimize overhead. We will 372 * attempt to use non-recursive locks which are supposed 373 * to be quite inexpensive. Now in order to do this the goal 374 * is that most functions are not aware of locking. Once we 375 * have a TCB we lock it and unlock when we are through. This 376 * means that the TCB lock is kind-of a "global" lock when 377 * working on an association. Caution must be used when 378 * asserting a TCB_LOCK since if we recurse we deadlock. 379 * 380 * Most other locks (INP and INFO) attempt to localize 381 * the locking i.e. we try to contain the lock and 382 * unlock within the function that needs to lock it. This 383 * sometimes mean we do extra locks and unlocks and loose 384 * a bit of efficency, but if the performance statements about 385 * non-recursive locks are true this should not be a problem. 386 * One issue that arises with this only lock when needed 387 * is that if an implicit association setup is done we 388 * have a problem. If at the time I lookup an association 389 * I have NULL in the tcb return, by the time I call to 390 * create the association some other processor could 391 * have created it. This is what the CREATE lock on 392 * the endpoint. Places where we will be implicitly 393 * creating the association OR just creating an association 394 * (the connect call) will assert the CREATE_INP lock. This 395 * will assure us that during all the lookup of INP and INFO 396 * if another creator is also locking/looking up we can 397 * gate the two to synchronize. So the CREATE_INP lock is 398 * also another one we must use extreme caution in locking 399 * to make sure we don't hit a re-entrancy issue. 400 * 401 * For non FreeBSD 5.x and above we provide a bunch 402 * of EMPTY lock macro's so we can blatantly put locks 403 * everywhere and they reduce to nothing on NetBSD/OpenBSD 404 * and FreeBSD 4.x 405 * 406 */ 407 408 409 /* When working with the global SCTP lists we lock and unlock 410 * the INP_INFO lock. So when we go to lookup an association 411 * we will want to do a SCTP_INP_INFO_RLOCK() and then when 412 * we want to add a new association to the sctppcbinfo list's 413 * we will do a SCTP_INP_INFO_WLOCK(). 414 */ 415 416 /* 417 * FIX ME, all locks right now have a 418 * recursive check/panic to validate that I 419 * don't have any lock recursion going on. 420 */ 421 422 #define SCTP_INP_INFO_LOCK_INIT() \ 423 mtx_init(&sctppcbinfo.ipi_ep_mtx, "sctp", "inp_info", MTX_DEF) 424 425 #ifdef xyzzy 426 #define SCTP_INP_INFO_RLOCK() do { \ 427 if (mtx_owned(&sctppcbinfo.ipi_ep_mtx)) \ 428 panic("INP INFO Recursive Lock-R"); \ 429 mtx_lock(&sctppcbinfo.ipi_ep_mtx); \ 430 } while (0) 431 432 #define SCTP_INP_INFO_WLOCK() do { \ 433 if (mtx_owned(&sctppcbinfo.ipi_ep_mtx)) \ 434 panic("INP INFO Recursive Lock-W"); \ 435 mtx_lock(&sctppcbinfo.ipi_ep_mtx); \ 436 } while (0) 437 438 #else 439 440 void SCTP_INP_INFO_RLOCK(void); 441 void SCTP_INP_INFO_WLOCK(void); 442 443 #endif 444 445 #define SCTP_INP_INFO_RUNLOCK() mtx_unlock(&sctppcbinfo.ipi_ep_mtx) 446 #define SCTP_INP_INFO_WUNLOCK() mtx_unlock(&sctppcbinfo.ipi_ep_mtx) 447 448 /* The INP locks we will use for locking an SCTP endpoint, so for 449 * example if we want to change something at the endpoint level for 450 * example random_store or cookie secrets we lock the INP level. 451 */ 452 #define SCTP_INP_LOCK_INIT(_inp) \ 453 mtx_init(&(_inp)->inp_mtx, "sctp", "inp", MTX_DEF | MTX_DUPOK) 454 455 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \ 456 mtx_init(&(_inp)->inp_create_mtx, "sctp", "inp_create", \ 457 MTX_DEF | MTX_DUPOK) 458 459 #define SCTP_INP_LOCK_DESTROY(_inp) mtx_destroy(&(_inp)->inp_mtx) 460 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) mtx_destroy(&(_inp)->inp_create_mtx) 461 462 #ifdef xyzzy 463 #define SCTP_INP_RLOCK(_inp) do { \ 464 struct sctp_tcb *xx_stcb; \ 465 xx_stcb = LIST_FIRST(&_inp->sctp_asoc_list); \ 466 if (xx_stcb) \ 467 if (mtx_owned(&(xx_stcb)->tcb_mtx)) \ 468 panic("I own TCB lock?"); \ 469 if (mtx_owned(&(_inp)->inp_mtx)) \ 470 panic("INP Recursive Lock-R"); \ 471 mtx_lock(&(_inp)->inp_mtx); \ 472 } while (0) 473 474 #define SCTP_INP_WLOCK(_inp) do { \ 475 struct sctp_tcb *xx_stcb; \ 476 xx_stcb = LIST_FIRST(&_inp->sctp_asoc_list); \ 477 if (xx_stcb) \ 478 if (mtx_owned(&(xx_stcb)->tcb_mtx)) \ 479 panic("I own TCB lock?"); \ 480 if (mtx_owned(&(_inp)->inp_mtx)) \ 481 panic("INP Recursive Lock-W"); \ 482 mtx_lock(&(_inp)->inp_mtx); \ 483 } while (0) 484 485 #else 486 void SCTP_INP_RLOCK(struct sctp_inpcb *); 487 void SCTP_INP_WLOCK(struct sctp_inpcb *); 488 489 #endif 490 491 492 #define SCTP_INP_INCR_REF(_inp) _inp->refcount++ 493 494 #define SCTP_INP_DECR_REF(_inp) do { \ 495 if (_inp->refcount > 0) \ 496 _inp->refcount--; \ 497 else \ 498 panic("bad inp refcount"); \ 499 }while (0) 500 501 #define SCTP_ASOC_CREATE_LOCK(_inp) do { \ 502 if (mtx_owned(&(_inp)->inp_create_mtx)) \ 503 panic("INP Recursive CREATE"); \ 504 mtx_lock(&(_inp)->inp_create_mtx); \ 505 } while (0) 506 507 #define SCTP_INP_RUNLOCK(_inp) mtx_unlock(&(_inp)->inp_mtx) 508 #define SCTP_INP_WUNLOCK(_inp) mtx_unlock(&(_inp)->inp_mtx) 509 #define SCTP_ASOC_CREATE_UNLOCK(_inp) mtx_unlock(&(_inp)->inp_create_mtx) 510 511 /* For the majority of things (once we have found the association) we 512 * will lock the actual association mutex. This will protect all 513 * the assoiciation level queues and streams and such. We will 514 * need to lock the socket layer when we stuff data up into 515 * the receiving sb_mb. I.e. we will need to do an extra 516 * SOCKBUF_LOCK(&so->so_rcv) even though the association is 517 * locked. 518 */ 519 520 #define SCTP_TCB_LOCK_INIT(_tcb) \ 521 mutex_init(&(_tcb)->tcb_mtx, MUTEX_DEFAULT, IPL_NET) 522 #define SCTP_TCB_LOCK_DESTROY(_tcb) mtx_destroy(&(_tcb)->tcb_mtx) 523 #define SCTP_TCB_LOCK(_tcb) do { \ 524 if (!mtx_owned(&(_tcb->sctp_ep->inp_mtx))) \ 525 panic("TCB locking and no INP lock"); \ 526 if (mtx_owned(&(_tcb)->tcb_mtx)) \ 527 panic("TCB Lock-recursive"); \ 528 mtx_lock(&(_tcb)->tcb_mtx); \ 529 } while (0) 530 #define SCTP_TCB_UNLOCK(_tcb) mtx_unlock(&(_tcb)->tcb_mtx) 531 532 #define SCTP_ITERATOR_LOCK_INIT() \ 533 mtx_init(&sctppcbinfo.it_mtx, "sctp", "iterator", MTX_DEF) 534 #define SCTP_ITERATOR_LOCK() do { \ 535 if (mtx_owned(&sctppcbinfo.it_mtx)) \ 536 panic("Iterator Lock"); \ 537 mtx_lock(&sctppcbinfo.it_mtx); \ 538 } while (0) 539 540 #define SCTP_ITERATOR_UNLOCK() mtx_unlock(&sctppcbinfo.it_mtx) 541 #define SCTP_ITERATOR_LOCK_DESTROY() mtx_destroy(&sctppcbinfo.it_mtx) 542 #elif 0 /* defined(__NetBSD__) */ 543 #define SCTP_INP_INFO_LOCK_INIT() \ 544 rw_init(&sctppcbinfo.ipi_ep_mtx) 545 546 #define SCTP_INP_INFO_RLOCK() do { \ 547 rw_enter(&sctppcbinfo.ipi_ep_mtx, RW_READER); \ 548 } while (0) 549 550 #define SCTP_INP_INFO_WLOCK() do { \ 551 rw_enter(&sctppcbinfo.ipi_ep_mtx, RW_WRITER); \ 552 } while (0) 553 554 #define SCTP_INP_INFO_RUNLOCK() rw_exit(&sctppcbinfo.ipi_ep_mtx) 555 #define SCTP_INP_INFO_WUNLOCK() rw_exit(&sctppcbinfo.ipi_ep_mtx) 556 557 /* The INP locks we will use for locking an SCTP endpoint, so for 558 * example if we want to change something at the endpoint level for 559 * example random_store or cookie secrets we lock the INP level. 560 */ 561 #define SCTP_INP_LOCK_INIT(_inp) \ 562 mutex_init(&(_inp)->inp_mtx, MUTEX_DEFAULT, IPL_NET) 563 564 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \ 565 mutex_init(&(_inp)->inp_create_mtx, MUTEX_DEFAULT, IPL_NET) 566 567 #define SCTP_INP_LOCK_DESTROY(_inp) mutex_destroy(&(_inp)->inp_mtx) 568 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) mutex_destroy(&(_inp)->inp_create_mtx) 569 570 #define SCTP_INP_RLOCK(_inp) do { \ 571 mutex_enter(&(_inp)->inp_mtx); \ 572 } while (0) 573 574 #define SCTP_INP_WLOCK(_inp) do { \ 575 mutex_enter(&(_inp)->inp_mtx); \ 576 } while (0) 577 578 579 #define SCTP_INP_INCR_REF(_inp) atomic_add_int(&((_inp)->refcount), 1) 580 581 #define SCTP_INP_DECR_REF(_inp) atomic_add_int(&((_inp)->refcount), -1) 582 583 #define SCTP_ASOC_CREATE_LOCK(_inp) do { \ 584 mutex_enter(&(_inp)->inp_create_mtx); \ 585 } while (0) 586 587 #define SCTP_INP_RUNLOCK(_inp) mutex_exit(&(_inp)->inp_mtx) 588 #define SCTP_INP_WUNLOCK(_inp) mutex_exit(&(_inp)->inp_mtx) 589 #define SCTP_ASOC_CREATE_UNLOCK(_inp) mutex_exit(&(_inp)->inp_create_mtx) 590 591 /* For the majority of things (once we have found the association) we 592 * will lock the actual association mutex. This will protect all 593 * the assoiciation level queues and streams and such. We will 594 * need to lock the socket layer when we stuff data up into 595 * the receiving sb_mb. I.e. we will need to do an extra 596 * SOCKBUF_LOCK(&so->so_rcv) even though the association is 597 * locked. 598 */ 599 600 #define SCTP_TCB_LOCK_INIT(_tcb) \ 601 mutex_init(&(_tcb)->tcb_mtx, MUTEX_DEFAULT, IPL_NET) 602 #define SCTP_TCB_LOCK_DESTROY(_tcb) mutex_destroy(&(_tcb)->tcb_mtx) 603 #define SCTP_TCB_LOCK(_tcb) do { \ 604 mutex_enter(&(_tcb)->tcb_mtx); \ 605 } while (0) 606 #define SCTP_TCB_UNLOCK(_tcb) mutex_exit(&(_tcb)->tcb_mtx) 607 608 #define SCTP_ITERATOR_LOCK_INIT() \ 609 mutex_init(&sctppcbinfo.it_mtx, MUTEX_DEFAULT, IPL_NET) 610 #define SCTP_ITERATOR_LOCK() do { \ 611 if (mutex_owned(&sctppcbinfo.it_mtx)) \ 612 panic("Iterator Lock"); \ 613 mutex_enter(&sctppcbinfo.it_mtx); \ 614 } while (0) 615 616 #define SCTP_ITERATOR_UNLOCK() mutex_exit(&sctppcbinfo.it_mtx) 617 #define SCTP_ITERATOR_LOCK_DESTROY() mutex_destroy(&sctppcbinfo.it_mtx) 618 #else 619 620 /* Empty Lock declarations for all other 621 * platforms pre-process away to nothing. 622 */ 623 624 /* Lock for INFO stuff */ 625 #define SCTP_INP_INFO_LOCK_INIT() 626 #define SCTP_INP_INFO_RLOCK() 627 #define SCTP_INP_INFO_RLOCK() 628 #define SCTP_INP_INFO_WLOCK() 629 630 #define SCTP_INP_INFO_RUNLOCK() 631 #define SCTP_INP_INFO_WUNLOCK() 632 /* Lock for INP */ 633 #define SCTP_INP_LOCK_INIT(_inp) 634 #define SCTP_INP_LOCK_DESTROY(_inp) 635 #define SCTP_INP_RLOCK(_inp) 636 #define SCTP_INP_RUNLOCK(_inp) 637 #define SCTP_INP_WLOCK(_inp) 638 #define SCTP_INP_INCR_REF(_inp) 639 #define SCTP_INP_DECR_REF(_inp) 640 #define SCTP_INP_WUNLOCK(_inp) 641 #define SCTP_ASOC_CREATE_LOCK_INIT(_inp) 642 #define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) 643 #define SCTP_ASOC_CREATE_LOCK(_inp) 644 #define SCTP_ASOC_CREATE_UNLOCK(_inp) 645 /* Lock for TCB */ 646 #define SCTP_TCB_LOCK_INIT(_tcb) 647 #define SCTP_TCB_LOCK_DESTROY(_tcb) 648 #define SCTP_TCB_LOCK(_tcb) 649 #define SCTP_TCB_UNLOCK(_tcb) 650 /* iterator locks */ 651 #define SCTP_ITERATOR_LOCK_INIT() 652 #define SCTP_ITERATOR_LOCK() 653 #define SCTP_ITERATOR_UNLOCK() 654 #define SCTP_ITERATOR_LOCK_DESTROY() 655 #endif 656 657 #if defined(_KERNEL) 658 659 extern struct sctp_epinfo sctppcbinfo; 660 extern int sctp_auto_asconf; 661 662 int SCTP6_ARE_ADDR_EQUAL(const struct in6_addr *a, const struct in6_addr *b); 663 664 void sctp_fill_pcbinfo(struct sctp_pcbinfo *); 665 666 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *); 667 668 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int); 669 670 int sctp_inpcb_bind(struct socket *, struct sockaddr *, struct lwp *); 671 672 struct sctp_tcb *sctp_findassociation_addr(struct mbuf *, int, int, 673 struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **, 674 struct sctp_nets **); 675 676 struct sctp_tcb *sctp_findassociation_addr_sa(struct sockaddr *, 677 struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int); 678 679 void sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *, 680 struct sctp_tcb *); 681 682 /* 683 * For this call ep_addr, the to is the destination endpoint address 684 * of the peer (relative to outbound). The from field is only used if 685 * the TCP model is enabled and helps distingush amongst the subset 686 * bound (non-boundall). The TCP model MAY change the actual ep field, 687 * this is why it is passed. 688 */ 689 struct sctp_tcb *sctp_findassociation_ep_addr(struct sctp_inpcb **, 690 struct sockaddr *, struct sctp_nets **, struct sockaddr *, struct sctp_tcb *); 691 692 struct sctp_tcb *sctp_findassociation_ep_asocid(struct sctp_inpcb *, vaddr_t); 693 694 struct sctp_tcb *sctp_findassociation_ep_asconf(struct mbuf *, int, int, 695 struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **); 696 697 int sctp_inpcb_alloc(struct socket *); 698 699 700 int sctp_is_address_on_local_host(struct sockaddr *addr); 701 702 void sctp_inpcb_free(struct sctp_inpcb *, int); 703 704 struct sctp_tcb *sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, 705 int, int *, uint32_t); 706 707 void sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *); 708 709 int sctp_add_local_addr_ep(struct sctp_inpcb *, struct ifaddr *); 710 711 int sctp_insert_laddr(struct sctpladdr *, struct ifaddr *); 712 713 void sctp_remove_laddr(struct sctp_laddr *); 714 715 int sctp_del_local_addr_ep(struct sctp_inpcb *, struct ifaddr *); 716 717 int sctp_del_local_addr_ep_sa(struct sctp_inpcb *, struct sockaddr *); 718 719 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int); 720 721 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *); 722 723 void sctp_pcb_init(void); 724 725 void sctp_free_remote_addr(struct sctp_nets *); 726 727 int sctp_add_local_addr_assoc(struct sctp_tcb *, struct ifaddr *); 728 729 int sctp_del_local_addr_assoc(struct sctp_tcb *, struct ifaddr *); 730 731 int sctp_del_local_addr_assoc_sa(struct sctp_tcb *, struct sockaddr *); 732 733 int sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int, 734 int, struct sctphdr *, struct sockaddr *); 735 736 int sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets *); 737 738 int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, struct timeval *); 739 740 /*void sctp_drain(void);*/ 741 742 int sctp_destination_is_reachable(struct sctp_tcb *, const struct sockaddr *); 743 744 int sctp_add_to_socket_q(struct sctp_inpcb *, struct sctp_tcb *); 745 746 struct sctp_tcb *sctp_remove_from_socket_q(struct sctp_inpcb *); 747 748 749 /* Null in last arg inpcb indicate run on ALL ep's. Specific 750 * inp in last arg indicates run on ONLY assoc's of the 751 * specified endpoint. 752 */ 753 int 754 sctp_initiate_iterator(asoc_func af, uint32_t, uint32_t, void *, uint32_t, 755 end_func ef, struct sctp_inpcb *); 756 757 extern void in6_sin6_2_sin (struct sockaddr_in *, 758 struct sockaddr_in6 *sin6); 759 760 #endif /* _KERNEL */ 761 #endif /* !__SCTP_PCB_H__ */ 762
Indexes created Sun Sep 21 20:09:37 GMT 2025