1 /*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * b) Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the distribution. 13 * 14 * c) Neither the name of Cisco Systems, Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* $KAME: sctp_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $ */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #ifndef __sctp_pcb_h__ 37 #define __sctp_pcb_h__ 38 39 #include <netinet/sctp_os.h> 40 #include <netinet/sctp.h> 41 #include <netinet/sctp_constants.h> 42 #include <netinet/sctp_sysctl.h> 43 44 LIST_HEAD(sctppcbhead, sctp_inpcb); 45 LIST_HEAD(sctpasochead, sctp_tcb); 46 LIST_HEAD(sctpladdr, sctp_laddr); 47 LIST_HEAD(sctpvtaghead, sctp_tagblock); 48 LIST_HEAD(sctp_vrflist, sctp_vrf); 49 LIST_HEAD(sctp_ifnlist, sctp_ifn); 50 LIST_HEAD(sctp_ifalist, sctp_ifa); 51 TAILQ_HEAD(sctp_readhead, sctp_queued_to_read); 52 TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending); 53 54 #include <netinet/sctp_structs.h> 55 #include <netinet/sctp_auth.h> 56 57 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask) 58 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask) 59 60 struct sctp_vrf { 61 LIST_ENTRY(sctp_vrf) next_vrf; 62 struct sctp_ifalist *vrf_addr_hash; 63 struct sctp_ifnlist ifnlist; 64 uint32_t vrf_id; 65 uint32_t tbl_id_v4; /* default v4 table id */ 66 uint32_t tbl_id_v6; /* default v6 table id */ 67 uint32_t total_ifa_count; 68 u_long vrf_addr_hashmark; 69 uint32_t refcount; 70 }; 71 72 struct sctp_ifn { 73 struct sctp_ifalist ifalist; 74 struct sctp_vrf *vrf; 75 LIST_ENTRY(sctp_ifn) next_ifn; 76 LIST_ENTRY(sctp_ifn) next_bucket; 77 void *ifn_p; /* never access without appropriate lock */ 78 uint32_t ifn_mtu; 79 uint32_t ifn_type; 80 uint32_t ifn_index; /* shorthand way to look at ifn for reference */ 81 uint32_t refcount; /* number of reference held should be >= 82 * ifa_count */ 83 uint32_t ifa_count; /* IFA's we hold (in our list - ifalist) */ 84 uint32_t num_v6; /* number of v6 addresses */ 85 uint32_t num_v4; /* number of v4 addresses */ 86 uint32_t registered_af; /* registered address family for i/f events */ 87 char ifn_name[SCTP_IFNAMSIZ]; 88 }; 89 90 /* SCTP local IFA flags */ 91 #define SCTP_ADDR_VALID 0x00000001 /* its up and active */ 92 #define SCTP_BEING_DELETED 0x00000002 /* being deleted, when 93 * refcount = 0. Note that it 94 * is pulled from the ifn list 95 * and ifa_p is nulled right 96 * away but it cannot be freed 97 * until the last *net 98 * pointing to it is deleted. */ 99 #define SCTP_ADDR_DEFER_USE 0x00000004 /* Hold off using this one */ 100 #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008 101 102 struct sctp_ifa { 103 LIST_ENTRY(sctp_ifa) next_ifa; 104 LIST_ENTRY(sctp_ifa) next_bucket; 105 struct sctp_ifn *ifn_p; /* back pointer to parent ifn */ 106 void *ifa; /* pointer to ifa, needed for flag update for 107 * that we MUST lock appropriate locks. This 108 * is for V6. */ 109 union sctp_sockstore address; 110 uint32_t refcount; /* number of folks refering to this */ 111 uint32_t flags; 112 uint32_t localifa_flags; 113 uint32_t vrf_id; /* vrf_id of this addr (for deleting) */ 114 uint8_t src_is_loop; 115 uint8_t src_is_priv; 116 uint8_t src_is_glob; 117 uint8_t resv; 118 }; 119 120 struct sctp_laddr { 121 LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */ 122 struct sctp_ifa *ifa; 123 uint32_t action; /* Used during asconf and adding if no-zero 124 * src-addr selection will not consider this 125 * address. */ 126 struct timeval start_time; /* time when this address was created */ 127 }; 128 129 struct sctp_block_entry { 130 int error; 131 }; 132 133 struct sctp_timewait { 134 uint32_t tv_sec_at_expire; /* the seconds from boot to expire */ 135 uint32_t v_tag; /* the vtag that can not be reused */ 136 }; 137 138 struct sctp_tagblock { 139 LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock; 140 struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK]; 141 }; 142 143 144 struct sctp_epinfo { 145 struct sctpasochead *sctp_asochash; 146 u_long hashasocmark; 147 148 struct sctppcbhead *sctp_ephash; 149 u_long hashmark; 150 151 struct sctpasochead *sctp_restarthash; 152 u_long hashrestartmark; 153 /*- 154 * The TCP model represents a substantial overhead in that we get an 155 * additional hash table to keep explicit connections in. The 156 * listening TCP endpoint will exist in the usual ephash above and 157 * accept only INIT's. It will be incapable of sending off an INIT. 158 * When a dg arrives we must look in the normal ephash. If we find a 159 * TCP endpoint that will tell us to go to the specific endpoint 160 * hash and re-hash to find the right assoc/socket. If we find a UDP 161 * model socket we then must complete the lookup. If this fails, 162 * i.e. no association can be found then we must continue to see if 163 * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket 164 * acts like a TCP model connected socket). 165 */ 166 struct sctppcbhead *sctp_tcpephash; 167 u_long hashtcpmark; 168 uint32_t hashtblsize; 169 170 struct sctp_vrflist *sctp_vrfhash; 171 u_long hashvrfmark; 172 173 struct sctp_ifnlist *vrf_ifn_hash; 174 u_long vrf_ifn_hashmark; 175 176 struct sctppcbhead listhead; 177 struct sctpladdr addr_wq; 178 179 struct sctpiterators iteratorhead; 180 int threads_must_exit; 181 /* ep zone info */ 182 sctp_zone_t ipi_zone_ep; 183 sctp_zone_t ipi_zone_asoc; 184 sctp_zone_t ipi_zone_laddr; 185 sctp_zone_t ipi_zone_net; 186 sctp_zone_t ipi_zone_chunk; 187 sctp_zone_t ipi_zone_readq; 188 sctp_zone_t ipi_zone_strmoq; 189 sctp_zone_t ipi_zone_asconf; 190 sctp_zone_t ipi_zone_asconf_ack; 191 192 struct rwlock ipi_ep_mtx; 193 struct mtx it_mtx; 194 struct mtx ipi_iterator_wq_mtx; 195 struct rwlock ipi_addr_mtx; 196 struct mtx ipi_pktlog_mtx; 197 uint32_t ipi_count_ep; 198 199 /* assoc/tcb zone info */ 200 uint32_t ipi_count_asoc; 201 202 /* local addrlist zone info */ 203 uint32_t ipi_count_laddr; 204 205 /* remote addrlist zone info */ 206 uint32_t ipi_count_raddr; 207 208 /* chunk structure list for output */ 209 uint32_t ipi_count_chunk; 210 211 /* socket queue zone info */ 212 uint32_t ipi_count_readq; 213 214 /* socket queue zone info */ 215 uint32_t ipi_count_strmoq; 216 217 /* Number of vrfs */ 218 uint32_t ipi_count_vrfs; 219 220 /* Number of ifns */ 221 uint32_t ipi_count_ifns; 222 223 /* Number of ifas */ 224 uint32_t ipi_count_ifas; 225 226 /* system wide number of free chunks hanging around */ 227 uint32_t ipi_free_chunks; 228 uint32_t ipi_free_strmoq; 229 230 231 struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE_A]; 232 233 /* address work queue handling */ 234 #if defined(SCTP_USE_THREAD_BASED_ITERATOR) 235 uint32_t iterator_running; 236 SCTP_PROCESS_STRUCT thread_proc; 237 #endif 238 struct sctp_timer addr_wq_timer; 239 240 }; 241 242 243 struct sctp_base_info { 244 /* 245 * All static structures that anchor the system must be here. 246 */ 247 struct sctp_epinfo sctppcbinfo; 248 struct sctpstat sctpstat; 249 struct sctp_sysctl sctpsysctl; 250 uint8_t first_time; 251 char sctp_pcb_initialized; 252 #if defined(SCTP_PACKET_LOGGING) 253 int packet_log_writers; 254 int packet_log_end; 255 uint8_t packet_log_buffer[SCTP_PACKET_LOG_SIZE]; 256 #endif 257 }; 258 259 /*- 260 * Here we have all the relevant information for each SCTP entity created. We 261 * will need to modify this as approprate. We also need to figure out how to 262 * access /dev/random. 263 */ 264 struct sctp_pcb { 265 unsigned int time_of_secret_change; /* number of seconds from 266 * timeval.tv_sec */ 267 uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS]; 268 unsigned int size_of_a_cookie; 269 270 unsigned int sctp_timeoutticks[SCTP_NUM_TMRS]; 271 unsigned int sctp_minrto; 272 unsigned int sctp_maxrto; 273 unsigned int initial_rto; 274 int initial_init_rto_max; 275 276 unsigned int sctp_sack_freq; 277 uint32_t sctp_sws_sender; 278 uint32_t sctp_sws_receiver; 279 280 uint32_t sctp_default_cc_module; 281 /* authentication related fields */ 282 struct sctp_keyhead shared_keys; 283 sctp_auth_chklist_t *local_auth_chunks; 284 sctp_hmaclist_t *local_hmacs; 285 uint16_t default_keyid; 286 287 /* various thresholds */ 288 /* Max times I will init at a guy */ 289 uint16_t max_init_times; 290 291 /* Max times I will send before we consider someone dead */ 292 uint16_t max_send_times; 293 294 uint16_t def_net_failure; 295 296 /* number of streams to pre-open on a association */ 297 uint16_t pre_open_stream_count; 298 uint16_t max_open_streams_intome; 299 300 /* random number generator */ 301 uint32_t random_counter; 302 uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE]; 303 uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE]; 304 305 /* 306 * This timer is kept running per endpoint. When it fires it will 307 * change the secret key. The default is once a hour 308 */ 309 struct sctp_timer signature_change; 310 311 /* Zero copy full buffer timer */ 312 struct sctp_timer zero_copy_timer; 313 /* Zero copy app to transport (sendq) read repulse timer */ 314 struct sctp_timer zero_copy_sendq_timer; 315 uint32_t def_cookie_life; 316 /* defaults to 0 */ 317 int auto_close_time; 318 uint32_t initial_sequence_debug; 319 uint32_t adaptation_layer_indicator; 320 uint32_t store_at; 321 uint8_t max_burst; 322 char current_secret_number; 323 char last_secret_number; 324 }; 325 326 #ifndef SCTP_ALIGNMENT 327 #define SCTP_ALIGNMENT 32 328 #endif 329 330 #ifndef SCTP_ALIGNM1 331 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1) 332 #endif 333 334 #define sctp_lport ip_inp.inp.inp_lport 335 336 struct sctp_pcbtsn_rlog { 337 uint32_t vtag; 338 uint16_t strm; 339 uint16_t seq; 340 uint16_t sz; 341 uint16_t flgs; 342 }; 343 344 #define SCTP_READ_LOG_SIZE 135 /* we choose the number to make a pcb a page */ 345 346 347 struct sctp_inpcb { 348 /*- 349 * put an inpcb in front of it all, kind of a waste but we need to 350 * for compatability with all the other stuff. 351 */ 352 union { 353 struct inpcb inp; 354 char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) & 355 ~SCTP_ALIGNM1]; 356 } ip_inp; 357 358 359 /* Socket buffer lock protects read_queue and of course sb_cc */ 360 struct sctp_readhead read_queue; 361 362 LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */ 363 /* hash of all endpoints for model */ 364 LIST_ENTRY(sctp_inpcb) sctp_hash; 365 /* count of local addresses bound, 0 if bound all */ 366 int laddr_count; 367 368 /* list of addrs in use by the EP, NULL if bound-all */ 369 struct sctpladdr sctp_addr_list; 370 /* 371 * used for source address selection rotation when we are subset 372 * bound 373 */ 374 struct sctp_laddr *next_addr_touse; 375 376 /* back pointer to our socket */ 377 struct socket *sctp_socket; 378 uint32_t sctp_flags; /* INP state flag set */ 379 uint32_t sctp_features; /* Feature flags */ 380 uint32_t sctp_mobility_features; /* Mobility Feature flags */ 381 struct sctp_pcb sctp_ep;/* SCTP ep data */ 382 /* head of the hash of all associations */ 383 struct sctpasochead *sctp_tcbhash; 384 u_long sctp_hashmark; 385 /* head of the list of all associations */ 386 struct sctpasochead sctp_asoc_list; 387 #ifdef SCTP_TRACK_FREED_ASOCS 388 struct sctpasochead sctp_asoc_free_list; 389 #endif 390 struct sctp_iterator *inp_starting_point_for_iterator; 391 uint32_t sctp_frag_point; 392 uint32_t partial_delivery_point; 393 uint32_t sctp_context; 394 struct sctp_nonpad_sndrcvinfo def_send; 395 /*- 396 * These three are here for the sosend_dgram 397 * (pkt, pkt_last and control). 398 * routine. However, I don't think anyone in 399 * the current FreeBSD kernel calls this. So 400 * they are candidates with sctp_sendm for 401 * de-supporting. 402 */ 403 struct mbuf *pkt, *pkt_last; 404 struct mbuf *control; 405 struct mtx inp_mtx; 406 struct mtx inp_create_mtx; 407 struct mtx inp_rdata_mtx; 408 int32_t refcount; 409 uint32_t def_vrf_id; 410 uint32_t total_sends; 411 uint32_t total_recvs; 412 uint32_t last_abort_code; 413 uint32_t total_nospaces; 414 #ifdef SCTP_ASOCLOG_OF_TSNS 415 struct sctp_pcbtsn_rlog readlog[SCTP_READ_LOG_SIZE]; 416 uint32_t readlog_index; 417 #endif 418 }; 419 420 struct sctp_tcb { 421 struct socket *sctp_socket; /* back pointer to socket */ 422 struct sctp_inpcb *sctp_ep; /* back pointer to ep */ 423 LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash 424 * table */ 425 LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the 426 * TCB's */ 427 LIST_ENTRY(sctp_tcb) sctp_tcbrestarhash; /* next link in restart 428 * hash table */ 429 LIST_ENTRY(sctp_tcb) sctp_asocs; /* vtag hash list */ 430 struct sctp_block_entry *block_entry; /* pointer locked by socket 431 * send buffer */ 432 struct sctp_association asoc; 433 /*- 434 * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the 435 * tcb_lock. Its special in this way to help avoid extra mutex calls 436 * in the reading of data. 437 */ 438 uint32_t freed_by_sorcv_sincelast; 439 uint32_t total_sends; 440 uint32_t total_recvs; 441 int freed_from_where; 442 uint16_t rport; /* remote port in network format */ 443 uint16_t resv; 444 struct mtx tcb_mtx; 445 struct mtx tcb_send_mtx; 446 }; 447 448 449 450 #include <netinet/sctp_lock_bsd.h> 451 452 453 /* TODO where to put non-_KERNEL things for __Userspace__? */ 454 #if defined(_KERNEL) || defined(__Userspace__) 455 456 /* Attention Julian, this is the extern that 457 * goes with the base info. sctp_pcb.c has 458 * the real definition. 459 */ 460 extern struct sctp_base_info system_base_info; 461 462 #ifdef INET6 463 int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b); 464 465 #endif 466 467 void sctp_fill_pcbinfo(struct sctp_pcbinfo *); 468 469 struct sctp_ifn * 470 sctp_find_ifn(void *ifn, uint32_t ifn_index); 471 472 struct sctp_vrf *sctp_allocate_vrf(int vrfid); 473 struct sctp_vrf *sctp_find_vrf(uint32_t vrfid); 474 void sctp_free_vrf(struct sctp_vrf *vrf); 475 476 /*- 477 * Change address state, can be used if 478 * O/S supports telling transports about 479 * changes to IFA/IFN's (link layer triggers). 480 * If a ifn goes down, we will do src-addr-selection 481 * and NOT use that, as a source address. This does 482 * not stop the routing system from routing out 483 * that interface, but we won't put it as a source. 484 */ 485 void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index); 486 void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index); 487 488 struct sctp_ifa * 489 sctp_add_addr_to_vrf(uint32_t vrfid, 490 void *ifn, uint32_t ifn_index, uint32_t ifn_type, 491 const char *if_name, 492 void *ifa, struct sockaddr *addr, uint32_t ifa_flags, 493 int dynamic_add); 494 495 void sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu); 496 497 void sctp_free_ifn(struct sctp_ifn *sctp_ifnp); 498 void sctp_free_ifa(struct sctp_ifa *sctp_ifap); 499 500 501 void 502 sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr, 503 uint32_t ifn_index, const char *if_name); 504 505 506 507 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *); 508 509 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t); 510 511 int 512 sctp_inpcb_bind(struct socket *, struct sockaddr *, 513 struct sctp_ifa *, struct thread *); 514 515 struct sctp_tcb * 516 sctp_findassociation_addr(struct mbuf *, int, int, 517 struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **, 518 struct sctp_nets **, uint32_t vrf_id); 519 520 struct sctp_tcb * 521 sctp_findassociation_addr_sa(struct sockaddr *, 522 struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t); 523 524 void 525 sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *, 526 struct sctp_tcb *); 527 528 /*- 529 * For this call ep_addr, the to is the destination endpoint address of the 530 * peer (relative to outbound). The from field is only used if the TCP model 531 * is enabled and helps distingush amongst the subset bound (non-boundall). 532 * The TCP model MAY change the actual ep field, this is why it is passed. 533 */ 534 struct sctp_tcb * 535 sctp_findassociation_ep_addr(struct sctp_inpcb **, 536 struct sockaddr *, struct sctp_nets **, struct sockaddr *, 537 struct sctp_tcb *); 538 539 struct sctp_tcb * 540 sctp_findassociation_ep_asocid(struct sctp_inpcb *, 541 sctp_assoc_t, int); 542 543 struct sctp_tcb * 544 sctp_findassociation_ep_asconf(struct mbuf *, int, int, 545 struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **); 546 547 int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id); 548 549 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id); 550 551 void sctp_inpcb_free(struct sctp_inpcb *, int, int); 552 553 struct sctp_tcb * 554 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, 555 int, int *, uint32_t, uint32_t, struct thread *); 556 557 int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int); 558 559 560 void sctp_delete_from_timewait(uint32_t); 561 562 int sctp_is_in_timewait(uint32_t tag); 563 564 void 565 sctp_add_vtag_to_timewait(uint32_t, uint32_t); 566 567 void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t); 568 569 int sctp_insert_laddr(struct sctpladdr *, struct sctp_ifa *, uint32_t); 570 571 void sctp_remove_laddr(struct sctp_laddr *); 572 573 void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *); 574 575 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int); 576 577 void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *); 578 579 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *); 580 581 void sctp_pcb_init(void); 582 583 void sctp_pcb_finish(void); 584 585 void sctp_add_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *); 586 void sctp_del_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *); 587 588 int 589 sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int, 590 int, struct sctphdr *, struct sockaddr *); 591 592 int 593 sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *, 594 struct sctp_nets *); 595 596 int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, struct timeval *, int); 597 598 /* void sctp_drain(void); */ 599 600 int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *); 601 602 int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp); 603 604 /*- 605 * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg 606 * indicates run on ONLY assoc's of the specified endpoint. 607 */ 608 int 609 sctp_initiate_iterator(inp_func inpf, 610 asoc_func af, 611 inp_func inpe, 612 uint32_t, uint32_t, 613 uint32_t, void *, 614 uint32_t, 615 end_func ef, 616 struct sctp_inpcb *, 617 uint8_t co_off); 618 619 #endif /* _KERNEL */ 620 #endif /* !__sctp_pcb_h__ */ 621