1 /*- 2 * Copyright (c) 2001-2007, 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 43 LIST_HEAD(sctppcbhead, sctp_inpcb); 44 LIST_HEAD(sctpasochead, sctp_tcb); 45 LIST_HEAD(sctpladdr, sctp_laddr); 46 LIST_HEAD(sctpvtaghead, sctp_tagblock); 47 LIST_HEAD(sctp_vrflist, sctp_vrf); 48 LIST_HEAD(sctp_ifnlist, sctp_ifn); 49 LIST_HEAD(sctp_ifalist, sctp_ifa); 50 TAILQ_HEAD(sctp_readhead, sctp_queued_to_read); 51 TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending); 52 53 #include <netinet/sctp_structs.h> 54 #include <netinet/sctp_uio.h> 55 #include <netinet/sctp_auth.h> 56 57 /* 58 * PCB flags (in sctp_flags bitmask) 59 */ 60 #define SCTP_PCB_FLAGS_UDPTYPE 0x00000001 61 #define SCTP_PCB_FLAGS_TCPTYPE 0x00000002 62 #define SCTP_PCB_FLAGS_BOUNDALL 0x00000004 63 #define SCTP_PCB_FLAGS_ACCEPTING 0x00000008 64 #define SCTP_PCB_FLAGS_UNBOUND 0x00000010 65 #define SCTP_PCB_FLAGS_CLOSE_IP 0x00040000 66 #define SCTP_PCB_FLAGS_WAS_CONNECTED 0x00080000 67 #define SCTP_PCB_FLAGS_WAS_ABORTED 0x00100000 68 /* TCP model support */ 69 70 #define SCTP_PCB_FLAGS_CONNECTED 0x00200000 71 #define SCTP_PCB_FLAGS_IN_TCPPOOL 0x00400000 72 #define SCTP_PCB_FLAGS_DONT_WAKE 0x00800000 73 #define SCTP_PCB_FLAGS_WAKEOUTPUT 0x01000000 74 #define SCTP_PCB_FLAGS_WAKEINPUT 0x02000000 75 #define SCTP_PCB_FLAGS_BOUND_V6 0x04000000 76 #define SCTP_PCB_FLAGS_NEEDS_MAPPED_V4 0x08000000 77 #define SCTP_PCB_FLAGS_BLOCKING_IO 0x10000000 78 #define SCTP_PCB_FLAGS_SOCKET_GONE 0x20000000 79 #define SCTP_PCB_FLAGS_SOCKET_ALLGONE 0x40000000 80 /* flags to copy to new PCB */ 81 #define SCTP_PCB_COPY_FLAGS 0x0e000004 82 83 84 /* 85 * PCB Features (in sctp_features bitmask) 86 */ 87 #define SCTP_PCB_FLAGS_EXT_RCVINFO 0x00000004 88 #define SCTP_PCB_FLAGS_DONOT_HEARTBEAT 0x00000008 89 #define SCTP_PCB_FLAGS_FRAG_INTERLEAVE 0x00000010 90 #define SCTP_PCB_FLAGS_DO_ASCONF 0x00000020 91 #define SCTP_PCB_FLAGS_AUTO_ASCONF 0x00000040 92 /* socket options */ 93 #define SCTP_PCB_FLAGS_NODELAY 0x00000100 94 #define SCTP_PCB_FLAGS_AUTOCLOSE 0x00000200 95 #define SCTP_PCB_FLAGS_RECVDATAIOEVNT 0x00000400 96 #define SCTP_PCB_FLAGS_RECVASSOCEVNT 0x00000800 97 #define SCTP_PCB_FLAGS_RECVPADDREVNT 0x00001000 98 #define SCTP_PCB_FLAGS_RECVPEERERR 0x00002000 99 #define SCTP_PCB_FLAGS_RECVSENDFAILEVNT 0x00004000 100 #define SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT 0x00008000 101 #define SCTP_PCB_FLAGS_ADAPTATIONEVNT 0x00010000 102 #define SCTP_PCB_FLAGS_PDAPIEVNT 0x00020000 103 #define SCTP_PCB_FLAGS_AUTHEVNT 0x00040000 104 #define SCTP_PCB_FLAGS_STREAM_RESETEVNT 0x00080000 105 #define SCTP_PCB_FLAGS_NO_FRAGMENT 0x00100000 106 #define SCTP_PCB_FLAGS_EXPLICIT_EOR 0x00200000 107 108 109 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask) 110 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask) 111 112 struct sctp_vrf { 113 LIST_ENTRY(sctp_vrf) next_vrf; 114 struct sctp_ifalist *vrf_addr_hash; 115 struct sctp_ifnlist ifnlist; 116 uint32_t vrf_id; 117 uint32_t total_ifa_count; 118 u_long vrf_hashmark; 119 }; 120 121 struct sctp_ifn { 122 struct sctp_ifalist ifalist; 123 struct sctp_vrf *vrf; 124 LIST_ENTRY(sctp_ifn) next_ifn; 125 void *ifn_p; /* never access without appropriate lock */ 126 uint32_t ifn_type; 127 uint32_t ifn_index; /* shorthand way to look at ifn for reference */ 128 uint32_t refcount; /* number of reference held should be >= 129 * ifa_count */ 130 uint32_t ifa_count; /* IFA's we hold (in our list - ifalist) */ 131 char ifn_name[SCTP_IFNAMSIZ]; 132 }; 133 134 /* SCTP local IFA flags */ 135 #define SCTP_ADDR_VALID 0x00000001 /* its up and active */ 136 #define SCTP_BEING_DELETED 0x00000002 /* being deleted, when 137 * refcount = 0. Note that it 138 * is pulled from the ifn list 139 * and ifa_p is nulled right 140 * away but it cannot be freed 141 * until the last *net 142 * pointing to it is deleted. */ 143 #define SCTP_ADDR_DEFER_USE 0x00000004 /* Hold off using this one */ 144 #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008 145 146 struct sctp_ifa { 147 LIST_ENTRY(sctp_ifa) next_ifa; 148 LIST_ENTRY(sctp_ifa) next_bucket; 149 struct sctp_ifn *ifn_p; /* back pointer to parent ifn */ 150 void *ifa; /* pointer to ifa, needed for flag update for 151 * that we MUST lock appropriate locks. This 152 * is for V6. */ 153 union sctp_sockstore address; 154 uint32_t refcount; /* number of folks refering to this */ 155 uint32_t flags; 156 uint32_t localifa_flags; 157 uint8_t src_is_loop; 158 uint8_t src_is_priv; 159 uint8_t src_is_glob; 160 uint8_t in_ifa_list; 161 }; 162 163 struct sctp_laddr { 164 LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */ 165 struct sctp_ifa *ifa; 166 uint32_t action; /* Used during asconf and adding if no-zero 167 * src-addr selection will not consider this 168 * address. */ 169 }; 170 171 struct sctp_block_entry { 172 int error; 173 }; 174 175 struct sctp_timewait { 176 uint32_t tv_sec_at_expire; /* the seconds from boot to expire */ 177 uint32_t v_tag; /* the vtag that can not be reused */ 178 }; 179 180 struct sctp_tagblock { 181 LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock; 182 struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK]; 183 }; 184 185 struct sctp_epinfo { 186 struct sctpasochead *sctp_asochash; 187 u_long hashasocmark; 188 189 struct sctppcbhead *sctp_ephash; 190 u_long hashmark; 191 192 struct sctpasochead *sctp_restarthash; 193 u_long hashrestartmark; 194 /*- 195 * The TCP model represents a substantial overhead in that we get an 196 * additional hash table to keep explicit connections in. The 197 * listening TCP endpoint will exist in the usual ephash above and 198 * accept only INIT's. It will be incapable of sending off an INIT. 199 * When a dg arrives we must look in the normal ephash. If we find a 200 * TCP endpoint that will tell us to go to the specific endpoint 201 * hash and re-hash to find the right assoc/socket. If we find a UDP 202 * model socket we then must complete the lookup. If this fails, 203 * i.e. no association can be found then we must continue to see if 204 * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket 205 * acts like a TCP model connected socket). 206 */ 207 struct sctppcbhead *sctp_tcpephash; 208 u_long hashtcpmark; 209 uint32_t hashtblsize; 210 211 struct sctp_vrflist *sctp_vrfhash; 212 u_long hashvrfmark; 213 214 struct sctppcbhead listhead; 215 struct sctpladdr addr_wq; 216 217 struct sctpiterators iteratorhead; 218 219 /* ep zone info */ 220 sctp_zone_t ipi_zone_ep; 221 sctp_zone_t ipi_zone_asoc; 222 sctp_zone_t ipi_zone_laddr; 223 sctp_zone_t ipi_zone_net; 224 sctp_zone_t ipi_zone_chunk; 225 sctp_zone_t ipi_zone_readq; 226 sctp_zone_t ipi_zone_strmoq; 227 228 struct mtx ipi_ep_mtx; 229 struct mtx it_mtx; 230 struct mtx ipi_iterator_wq_mtx; 231 struct mtx ipi_addr_mtx; 232 uint32_t ipi_count_ep; 233 234 /* assoc/tcb zone info */ 235 uint32_t ipi_count_asoc; 236 237 /* local addrlist zone info */ 238 uint32_t ipi_count_laddr; 239 240 /* remote addrlist zone info */ 241 uint32_t ipi_count_raddr; 242 243 /* chunk structure list for output */ 244 uint32_t ipi_count_chunk; 245 246 /* socket queue zone info */ 247 uint32_t ipi_count_readq; 248 249 /* socket queue zone info */ 250 uint32_t ipi_count_strmoq; 251 252 /* system wide number of free chunks hanging around */ 253 uint32_t ipi_free_chunks; 254 uint32_t ipi_free_strmoq; 255 256 struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE]; 257 258 /* address work queue handling */ 259 #if defined(SCTP_USE_THREAD_BASED_ITERATOR) 260 uint32_t iterator_running; 261 SCTP_PROCESS_STRUCT thread_proc; 262 #endif 263 struct sctp_timer addr_wq_timer; 264 265 }; 266 267 /*- 268 * Here we have all the relevant information for each SCTP entity created. We 269 * will need to modify this as approprate. We also need to figure out how to 270 * access /dev/random. 271 */ 272 struct sctp_pcb { 273 unsigned int time_of_secret_change; /* number of seconds from 274 * timeval.tv_sec */ 275 uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS]; 276 unsigned int size_of_a_cookie; 277 278 unsigned int sctp_timeoutticks[SCTP_NUM_TMRS]; 279 unsigned int sctp_minrto; 280 unsigned int sctp_maxrto; 281 unsigned int initial_rto; 282 int initial_init_rto_max; 283 284 unsigned int sctp_sack_freq; 285 uint32_t sctp_sws_sender; 286 uint32_t sctp_sws_receiver; 287 288 /* authentication related fields */ 289 struct sctp_keyhead shared_keys; 290 sctp_auth_chklist_t *local_auth_chunks; 291 sctp_hmaclist_t *local_hmacs; 292 uint16_t default_keyid; 293 294 /* various thresholds */ 295 /* Max times I will init at a guy */ 296 uint16_t max_init_times; 297 298 /* Max times I will send before we consider someone dead */ 299 uint16_t max_send_times; 300 301 uint16_t def_net_failure; 302 303 /* number of streams to pre-open on a association */ 304 uint16_t pre_open_stream_count; 305 uint16_t max_open_streams_intome; 306 307 /* random number generator */ 308 uint32_t random_counter; 309 uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE]; 310 uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE]; 311 312 /* 313 * This timer is kept running per endpoint. When it fires it will 314 * change the secret key. The default is once a hour 315 */ 316 struct sctp_timer signature_change; 317 int def_cookie_life; 318 /* defaults to 0 */ 319 int auto_close_time; 320 uint32_t initial_sequence_debug; 321 uint32_t adaptation_layer_indicator; 322 char store_at; 323 uint8_t max_burst; 324 char current_secret_number; 325 char last_secret_number; 326 }; 327 328 #ifndef SCTP_ALIGNMENT 329 #define SCTP_ALIGNMENT 32 330 #endif 331 332 #ifndef SCTP_ALIGNM1 333 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1) 334 #endif 335 336 #define sctp_lport ip_inp.inp.inp_lport 337 338 struct sctp_inpcb { 339 /*- 340 * put an inpcb in front of it all, kind of a waste but we need to 341 * for compatability with all the other stuff. 342 */ 343 union { 344 struct inpcb inp; 345 char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) & 346 ~SCTP_ALIGNM1]; 347 } ip_inp; 348 349 350 /* Socket buffer lock protects read_queue and of course sb_cc */ 351 struct sctp_readhead read_queue; 352 353 LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */ 354 /* hash of all endpoints for model */ 355 LIST_ENTRY(sctp_inpcb) sctp_hash; 356 /* count of local addresses bound, 0 if bound all */ 357 int laddr_count; 358 359 /* list of addrs in use by the EP, NULL if bound-all */ 360 struct sctpladdr sctp_addr_list; 361 /* 362 * used for source address selection rotation when we are subset 363 * bound 364 */ 365 struct sctp_laddr *next_addr_touse; 366 367 /* back pointer to our socket */ 368 struct socket *sctp_socket; 369 uint32_t sctp_flags; /* INP state flag set */ 370 uint32_t sctp_features; /* Feature flags */ 371 struct sctp_pcb sctp_ep;/* SCTP ep data */ 372 /* head of the hash of all associations */ 373 struct sctpasochead *sctp_tcbhash; 374 u_long sctp_hashmark; 375 /* head of the list of all associations */ 376 struct sctpasochead sctp_asoc_list; 377 #ifdef SCTP_TRACK_FREED_ASOCS 378 struct sctpasochead sctp_asoc_free_list; 379 #endif 380 struct sctp_iterator *inp_starting_point_for_iterator; 381 uint32_t sctp_frag_point; 382 uint32_t partial_delivery_point; 383 uint32_t sctp_context; 384 struct sctp_sndrcvinfo def_send; 385 /*- 386 * These three are here for the sosend_dgram 387 * (pkt, pkt_last and control). 388 * routine. However, I don't think anyone in 389 * the current FreeBSD kernel calls this. So 390 * they are candidates with sctp_sendm for 391 * de-supporting. 392 */ 393 struct mbuf *pkt, *pkt_last; 394 struct mbuf *control; 395 struct mtx inp_mtx; 396 struct mtx inp_create_mtx; 397 struct mtx inp_rdata_mtx; 398 int32_t refcount; 399 uint32_t def_vrf_id; 400 uint32_t total_sends; 401 uint32_t total_recvs; 402 uint32_t last_abort_code; 403 uint32_t total_nospaces; 404 }; 405 406 struct sctp_tcb { 407 struct socket *sctp_socket; /* back pointer to socket */ 408 struct sctp_inpcb *sctp_ep; /* back pointer to ep */ 409 LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash 410 * table */ 411 LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the 412 * TCB's */ 413 LIST_ENTRY(sctp_tcb) sctp_tcbrestarhash; /* next link in restart 414 * hash table */ 415 LIST_ENTRY(sctp_tcb) sctp_asocs; /* vtag hash list */ 416 struct sctp_block_entry *block_entry; /* pointer locked by socket 417 * send buffer */ 418 struct sctp_association asoc; 419 /*- 420 * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the 421 * tcb_lock. Its special in this way to help avoid extra mutex calls 422 * in the reading of data. 423 */ 424 uint32_t freed_by_sorcv_sincelast; 425 uint32_t total_sends; 426 uint32_t total_recvs; 427 int freed_from_where; 428 uint16_t rport; /* remote port in network format */ 429 uint16_t resv; 430 struct mtx tcb_mtx; 431 struct mtx tcb_send_mtx; 432 }; 433 434 435 436 #include <netinet/sctp_lock_bsd.h> 437 438 439 #if defined(_KERNEL) 440 441 extern struct sctp_epinfo sctppcbinfo; 442 443 int SCTP6_ARE_ADDR_EQUAL(struct in6_addr *a, struct in6_addr *b); 444 445 void sctp_fill_pcbinfo(struct sctp_pcbinfo *); 446 447 struct sctp_ifn * 448 sctp_find_ifn(struct sctp_vrf *vrf, void *ifn, uint32_t ifn_index); 449 450 struct sctp_vrf *sctp_allocate_vrf(int vrfid); 451 452 struct sctp_vrf *sctp_find_vrf(uint32_t vrfid); 453 454 struct sctp_ifa * 455 sctp_add_addr_to_vrf(uint32_t vrfid, 456 void *ifn, uint32_t ifn_index, uint32_t ifn_type, 457 const char *if_name, 458 void *ifa, struct sockaddr *addr, uint32_t ifa_flags); 459 460 void sctp_free_ifa(struct sctp_ifa *sctp_ifap); 461 462 struct sctp_ifa * 463 sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr, 464 uint32_t ifn_index); 465 466 467 468 469 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *); 470 471 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t); 472 473 int sctp_inpcb_bind(struct socket *, struct sockaddr *, struct thread *); 474 475 476 struct sctp_tcb * 477 sctp_findassociation_addr(struct mbuf *, int, int, 478 struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **, 479 struct sctp_nets **, uint32_t vrf_id); 480 481 struct sctp_tcb * 482 sctp_findassociation_addr_sa(struct sockaddr *, 483 struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t); 484 485 void 486 sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *, 487 struct sctp_tcb *); 488 489 /*- 490 * For this call ep_addr, the to is the destination endpoint address of the 491 * peer (relative to outbound). The from field is only used if the TCP model 492 * is enabled and helps distingush amongst the subset bound (non-boundall). 493 * The TCP model MAY change the actual ep field, this is why it is passed. 494 */ 495 struct sctp_tcb * 496 sctp_findassociation_ep_addr(struct sctp_inpcb **, 497 struct sockaddr *, struct sctp_nets **, struct sockaddr *, 498 struct sctp_tcb *); 499 500 struct sctp_tcb * 501 sctp_findassociation_ep_asocid(struct sctp_inpcb *, 502 sctp_assoc_t, int); 503 504 struct sctp_tcb * 505 sctp_findassociation_ep_asconf(struct mbuf *, int, int, 506 struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **); 507 508 int sctp_inpcb_alloc(struct socket *); 509 510 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id); 511 512 void sctp_inpcb_free(struct sctp_inpcb *, int, int); 513 514 struct sctp_tcb * 515 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, 516 int, int *, uint32_t, uint32_t); 517 518 int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int); 519 520 void 521 sctp_add_vtag_to_timewait(struct sctp_inpcb *, uint32_t, uint32_t); 522 523 int sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t); 524 525 int sctp_insert_laddr(struct sctpladdr *, struct sctp_ifa *, uint32_t); 526 527 void sctp_remove_laddr(struct sctp_laddr *); 528 529 int sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *); 530 531 void sctp_set_initial_cc_param(struct sctp_tcb *, struct sctp_nets *net); 532 533 534 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int); 535 536 void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *); 537 538 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *); 539 540 void sctp_pcb_init(void); 541 542 int sctp_add_local_addr_assoc(struct sctp_tcb *, struct sctp_ifa *, int); 543 544 int sctp_del_local_addr_assoc(struct sctp_tcb *, struct sctp_ifa *); 545 546 int 547 sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int, 548 int, struct sctphdr *, struct sockaddr *); 549 550 int 551 sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *, 552 struct sctp_nets *); 553 554 int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, struct timeval *); 555 556 /* void sctp_drain(void); */ 557 558 int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *); 559 560 /*- 561 * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg 562 * indicates run on ONLY assoc's of the specified endpoint. 563 */ 564 int 565 sctp_initiate_iterator(inp_func inpf, 566 asoc_func af, 567 inp_func inpe, 568 uint32_t, uint32_t, 569 uint32_t, void *, 570 uint32_t, 571 end_func ef, 572 struct sctp_inpcb *, 573 uint8_t co_off); 574 575 #endif /* _KERNEL */ 576 #endif /* !__sctp_pcb_h__ */ 577