sctp_pcb.h (26870B)
1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * a) Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 14 * b) Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the distribution. 17 * 18 * c) Neither the name of Cisco Systems, Inc. nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef _NETINET_SCTP_PCB_H_ 36 #define _NETINET_SCTP_PCB_H_ 37 38 #include <netinet/sctp_os.h> 39 #include <netinet/sctp.h> 40 #include <netinet/sctp_constants.h> 41 #include <netinet/sctp_sysctl.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_auth.h> 55 56 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask) 57 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask) 58 59 struct sctp_vrf { 60 LIST_ENTRY (sctp_vrf) next_vrf; 61 struct sctp_ifalist *vrf_addr_hash; 62 struct sctp_ifnlist ifnlist; 63 uint32_t vrf_id; 64 uint32_t tbl_id_v4; /* default v4 table id */ 65 uint32_t tbl_id_v6; /* default v6 table id */ 66 uint32_t total_ifa_count; 67 u_long vrf_addr_hashmark; 68 uint32_t refcount; 69 }; 70 71 struct sctp_ifn { 72 struct sctp_ifalist ifalist; 73 struct sctp_vrf *vrf; 74 LIST_ENTRY(sctp_ifn) next_ifn; 75 LIST_ENTRY(sctp_ifn) next_bucket; 76 void *ifn_p; /* never access without appropriate lock */ 77 uint32_t ifn_mtu; 78 uint32_t ifn_type; 79 uint32_t ifn_index; /* shorthand way to look at ifn for reference */ 80 uint32_t refcount; /* number of reference held should be >= ifa_count */ 81 uint32_t ifa_count; /* IFA's we hold (in our list - ifalist)*/ 82 uint32_t num_v6; /* number of v6 addresses */ 83 uint32_t num_v4; /* number of v4 addresses */ 84 uint32_t registered_af; /* registered address family for i/f events */ 85 char ifn_name[SCTP_IFNAMSIZ]; 86 }; 87 88 /* SCTP local IFA flags */ 89 #define SCTP_ADDR_VALID 0x00000001 /* its up and active */ 90 #define SCTP_BEING_DELETED 0x00000002 /* being deleted, 91 * when refcount = 0. Note 92 * that it is pulled from the ifn list 93 * and ifa_p is nulled right away but 94 * it cannot be freed until the last *net 95 * pointing to it is deleted. 96 */ 97 #define SCTP_ADDR_DEFER_USE 0x00000004 /* Hold off using this one */ 98 #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008 99 100 struct sctp_ifa { 101 LIST_ENTRY(sctp_ifa) next_ifa; 102 LIST_ENTRY(sctp_ifa) next_bucket; 103 struct sctp_ifn *ifn_p; /* back pointer to parent ifn */ 104 void *ifa; /* pointer to ifa, needed for flag 105 * update for that we MUST lock 106 * appropriate locks. This is for V6. 107 */ 108 union sctp_sockstore address; 109 uint32_t refcount; /* number of folks referring to this */ 110 uint32_t flags; 111 uint32_t localifa_flags; 112 uint32_t vrf_id; /* vrf_id of this addr (for deleting) */ 113 uint8_t src_is_loop; 114 uint8_t src_is_priv; 115 uint8_t src_is_glob; 116 uint8_t resv; 117 }; 118 119 struct sctp_laddr { 120 LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */ 121 struct sctp_ifa *ifa; 122 uint32_t action; /* Used during asconf and adding 123 * if no-zero src-addr selection will 124 * not consider this address. 125 */ 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 time_t tv_sec_at_expire; /* the seconds from boot to expire */ 135 uint32_t v_tag; /* the vtag that can not be reused */ 136 uint16_t lport; /* the local port used in vtag */ 137 uint16_t rport; /* the remote port used in vtag */ 138 }; 139 140 struct sctp_tagblock { 141 LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock; 142 struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK]; 143 }; 144 145 struct sctp_epinfo { 146 #if defined(__FreeBSD__) && !defined(__Userspace__) 147 #ifdef INET 148 struct socket *udp4_tun_socket; 149 #endif 150 #ifdef INET6 151 struct socket *udp6_tun_socket; 152 #endif 153 #endif 154 struct sctpasochead *sctp_asochash; 155 u_long hashasocmark; 156 157 struct sctppcbhead *sctp_ephash; 158 u_long hashmark; 159 160 /*- 161 * The TCP model represents a substantial overhead in that we get an 162 * additional hash table to keep explicit connections in. The 163 * listening TCP endpoint will exist in the usual ephash above and 164 * accept only INIT's. It will be incapable of sending off an INIT. 165 * When a dg arrives we must look in the normal ephash. If we find a 166 * TCP endpoint that will tell us to go to the specific endpoint 167 * hash and re-hash to find the right assoc/socket. If we find a UDP 168 * model socket we then must complete the lookup. If this fails, 169 * i.e. no association can be found then we must continue to see if 170 * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket 171 * acts like a TCP model connected socket). 172 */ 173 struct sctppcbhead *sctp_tcpephash; 174 u_long hashtcpmark; 175 uint32_t hashtblsize; 176 177 struct sctp_vrflist *sctp_vrfhash; 178 u_long hashvrfmark; 179 180 struct sctp_ifnlist *vrf_ifn_hash; 181 u_long vrf_ifn_hashmark; 182 183 struct sctppcbhead listhead; 184 struct sctpladdr addr_wq; 185 186 #if defined(__APPLE__) && !defined(__Userspace__) 187 struct inpcbhead inplisthead; 188 struct inpcbinfo sctbinfo; 189 #endif 190 /* ep zone info */ 191 sctp_zone_t ipi_zone_ep; 192 sctp_zone_t ipi_zone_asoc; 193 sctp_zone_t ipi_zone_laddr; 194 sctp_zone_t ipi_zone_net; 195 sctp_zone_t ipi_zone_chunk; 196 sctp_zone_t ipi_zone_readq; 197 sctp_zone_t ipi_zone_strmoq; 198 sctp_zone_t ipi_zone_asconf; 199 sctp_zone_t ipi_zone_asconf_ack; 200 201 #if defined(__FreeBSD__) && !defined(__Userspace__) 202 struct rwlock ipi_ep_mtx; 203 struct mtx ipi_iterator_wq_mtx; 204 struct rwlock ipi_addr_mtx; 205 struct mtx ipi_pktlog_mtx; 206 struct mtx wq_addr_mtx; 207 #elif defined(SCTP_PROCESS_LEVEL_LOCKS) 208 userland_rwlock_t ipi_ep_mtx; 209 userland_rwlock_t ipi_addr_mtx; 210 userland_mutex_t ipi_count_mtx; 211 userland_mutex_t ipi_pktlog_mtx; 212 userland_mutex_t wq_addr_mtx; 213 #elif defined(__APPLE__) && !defined(__Userspace__) 214 #ifdef _KERN_LOCKS_H_ 215 lck_mtx_t *ipi_addr_mtx; 216 lck_mtx_t *ipi_count_mtx; 217 lck_mtx_t *ipi_pktlog_mtx; 218 lck_mtx_t *logging_mtx; 219 lck_mtx_t *wq_addr_mtx; 220 #else 221 void *ipi_count_mtx; 222 void *logging_mtx; 223 #endif /* _KERN_LOCKS_H_ */ 224 #elif defined(_WIN32) && !defined(__Userspace__) 225 struct rwlock ipi_ep_lock; 226 struct rwlock ipi_addr_lock; 227 struct spinlock ipi_pktlog_mtx; 228 struct rwlock wq_addr_mtx; 229 #elif defined(__Userspace__) 230 #endif 231 uint32_t ipi_count_ep; 232 233 /* assoc/tcb zone info */ 234 uint32_t ipi_count_asoc; 235 236 /* local addrlist zone info */ 237 uint32_t ipi_count_laddr; 238 239 /* remote addrlist zone info */ 240 uint32_t ipi_count_raddr; 241 242 /* chunk structure list for output */ 243 uint32_t ipi_count_chunk; 244 245 /* socket queue zone info */ 246 uint32_t ipi_count_readq; 247 248 /* socket queue zone info */ 249 uint32_t ipi_count_strmoq; 250 251 /* Number of vrfs */ 252 uint32_t ipi_count_vrfs; 253 254 /* Number of ifns */ 255 uint32_t ipi_count_ifns; 256 257 /* Number of ifas */ 258 uint32_t ipi_count_ifas; 259 260 /* system wide number of free chunks hanging around */ 261 uint32_t ipi_free_chunks; 262 uint32_t ipi_free_strmoq; 263 264 struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE]; 265 266 /* address work queue handling */ 267 struct sctp_timer addr_wq_timer; 268 269 #if defined(_SCTP_NEEDS_CALLOUT_) || defined(_USER_SCTP_NEEDS_CALLOUT_) 270 struct calloutlist callqueue; 271 #endif 272 }; 273 274 struct sctp_base_info { 275 /* All static structures that 276 * anchor the system must be here. 277 */ 278 struct sctp_epinfo sctppcbinfo; 279 #if defined(__FreeBSD__) && !defined(__Userspace__) 280 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT) 281 struct sctpstat *sctpstat; 282 #else 283 struct sctpstat sctpstat; 284 #endif 285 #else 286 struct sctpstat sctpstat; 287 #endif 288 struct sctp_sysctl sctpsysctl; 289 uint8_t first_time; 290 char sctp_pcb_initialized; 291 #if defined(SCTP_PACKET_LOGGING) 292 int packet_log_writers; 293 int packet_log_end; 294 uint8_t packet_log_buffer[SCTP_PACKET_LOG_SIZE]; 295 #endif 296 #if defined(__FreeBSD__) && !defined(__Userspace__) 297 eventhandler_tag eh_tag; 298 #endif 299 #if defined(__APPLE__) && !defined(__Userspace__) 300 int sctp_main_timer_ticks; 301 #endif 302 #if defined(__Userspace__) 303 userland_mutex_t timer_mtx; 304 userland_thread_t timer_thread; 305 int timer_thread_should_exit; 306 int iterator_thread_started; 307 int timer_thread_started; 308 #if !defined(_WIN32) 309 pthread_mutexattr_t mtx_attr; 310 pthread_rwlockattr_t rwlock_attr; 311 #if defined(INET) || defined(INET6) 312 int userspace_route; 313 userland_thread_t recvthreadroute; 314 #endif 315 #endif 316 #ifdef INET 317 #if defined(_WIN32) && !defined(__MINGW32__) 318 SOCKET userspace_rawsctp; 319 SOCKET userspace_udpsctp; 320 #else 321 int userspace_rawsctp; 322 int userspace_udpsctp; 323 #endif 324 userland_thread_t recvthreadraw; 325 userland_thread_t recvthreadudp; 326 #endif 327 #ifdef INET6 328 #if defined(_WIN32) && !defined(__MINGW32__) 329 SOCKET userspace_rawsctp6; 330 SOCKET userspace_udpsctp6; 331 #else 332 int userspace_rawsctp6; 333 int userspace_udpsctp6; 334 #endif 335 userland_thread_t recvthreadraw6; 336 userland_thread_t recvthreadudp6; 337 #endif 338 int (*conn_output)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df); 339 void (*debug_printf)(const char *format, ...); 340 int crc32c_offloaded; 341 #endif 342 }; 343 344 /*- 345 * Here we have all the relevant information for each SCTP entity created. We 346 * will need to modify this as approprate. We also need to figure out how to 347 * access /dev/random. 348 */ 349 struct sctp_pcb { 350 time_t time_of_secret_change; /* number of seconds from 351 * timeval.tv_sec */ 352 uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS]; 353 unsigned int size_of_a_cookie; 354 355 uint32_t sctp_timeoutticks[SCTP_NUM_TMRS]; 356 uint32_t sctp_minrto; 357 uint32_t sctp_maxrto; 358 uint32_t initial_rto; 359 uint32_t initial_init_rto_max; 360 361 unsigned int sctp_sack_freq; 362 uint32_t sctp_sws_sender; 363 uint32_t sctp_sws_receiver; 364 365 uint32_t sctp_default_cc_module; 366 uint32_t sctp_default_ss_module; 367 /* authentication related fields */ 368 struct sctp_keyhead shared_keys; 369 sctp_auth_chklist_t *local_auth_chunks; 370 sctp_hmaclist_t *local_hmacs; 371 uint16_t default_keyid; 372 uint32_t default_mtu; 373 374 /* various thresholds */ 375 /* Max times I will init at a guy */ 376 uint16_t max_init_times; 377 378 /* Max times I will send before we consider someone dead */ 379 uint16_t max_send_times; 380 381 uint16_t def_net_failure; 382 383 uint16_t def_net_pf_threshold; 384 385 /* number of streams to pre-open on a association */ 386 uint16_t pre_open_stream_count; 387 uint16_t max_open_streams_intome; 388 389 /* random number generator */ 390 uint32_t random_counter; 391 uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE]; 392 uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE]; 393 394 /* 395 * This timer is kept running per endpoint. When it fires it will 396 * change the secret key. The default is once a hour 397 */ 398 struct sctp_timer signature_change; 399 400 uint32_t def_cookie_life; 401 /* defaults to 0 */ 402 uint32_t auto_close_time; 403 uint32_t initial_sequence_debug; 404 uint32_t adaptation_layer_indicator; 405 uint8_t adaptation_layer_indicator_provided; 406 uint32_t store_at; 407 uint32_t max_burst; 408 uint32_t fr_max_burst; 409 #ifdef INET6 410 uint32_t default_flowlabel; 411 #endif 412 uint8_t default_dscp; 413 char current_secret_number; 414 char last_secret_number; 415 uint16_t port; /* remote UDP encapsulation port */ 416 }; 417 418 #ifndef SCTP_ALIGNMENT 419 #define SCTP_ALIGNMENT 32 420 #endif 421 422 #ifndef SCTP_ALIGNM1 423 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1) 424 #endif 425 426 #define sctp_lport ip_inp.inp.inp_lport 427 428 struct sctp_pcbtsn_rlog { 429 uint32_t vtag; 430 uint16_t strm; 431 uint16_t seq; 432 uint16_t sz; 433 uint16_t flgs; 434 }; 435 #define SCTP_READ_LOG_SIZE 135 /* we choose the number to make a pcb a page */ 436 437 struct sctp_inpcb { 438 /*- 439 * put an inpcb in front of it all, kind of a waste but we need to 440 * for compatibility with all the other stuff. 441 */ 442 union { 443 struct inpcb inp; 444 char align[(sizeof(struct inpcb) + SCTP_ALIGNM1) & 445 ~SCTP_ALIGNM1]; 446 } ip_inp; 447 #if defined(__APPLE__) && !defined(__Userspace__) 448 /* leave some space in case i386 inpcb is bigger than ppc */ 449 uint8_t padding[128]; 450 #endif 451 452 /* Socket buffer lock protects read_queue and of course sb_cc */ 453 struct sctp_readhead read_queue; 454 455 LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */ 456 /* hash of all endpoints for model */ 457 LIST_ENTRY(sctp_inpcb) sctp_hash; 458 /* count of local addresses bound, 0 if bound all */ 459 int laddr_count; 460 461 /* list of addrs in use by the EP, NULL if bound-all */ 462 struct sctpladdr sctp_addr_list; 463 /* used for source address selection rotation when we are subset bound */ 464 struct sctp_laddr *next_addr_touse; 465 466 /* back pointer to our socket */ 467 struct socket *sctp_socket; 468 uint64_t sctp_features; /* Feature flags */ 469 uint32_t sctp_flags; /* INP state flag set */ 470 uint32_t sctp_mobility_features; /* Mobility Feature flags */ 471 struct sctp_pcb sctp_ep;/* SCTP ep data */ 472 /* head of the hash of all associations */ 473 struct sctpasochead *sctp_tcbhash; 474 u_long sctp_hashmark; 475 /* head of the list of all associations */ 476 struct sctpasochead sctp_asoc_list; 477 #ifdef SCTP_TRACK_FREED_ASOCS 478 struct sctpasochead sctp_asoc_free_list; 479 #endif 480 uint32_t sctp_frag_point; 481 uint32_t partial_delivery_point; 482 uint32_t sctp_context; 483 uint32_t max_cwnd; 484 uint8_t local_strreset_support; 485 uint32_t sctp_cmt_on_off; 486 uint8_t ecn_supported; 487 uint8_t prsctp_supported; 488 uint8_t auth_supported; 489 uint8_t idata_supported; 490 uint8_t asconf_supported; 491 uint8_t reconfig_supported; 492 uint8_t nrsack_supported; 493 uint8_t pktdrop_supported; 494 uint8_t rcv_edmid; 495 struct sctp_nonpad_sndrcvinfo def_send; 496 /*- 497 * These three are here for the sosend_dgram 498 * (pkt, pkt_last and control). 499 * routine. However, I don't think anyone in 500 * the current FreeBSD kernel calls this. So 501 * they are candidates with sctp_sendm for 502 * de-supporting. 503 */ 504 struct mbuf *pkt, *pkt_last; 505 struct mbuf *control; 506 #if defined(__FreeBSD__) && !defined(__Userspace__) 507 struct mtx inp_mtx; 508 struct mtx inp_create_mtx; 509 struct mtx inp_rdata_mtx; 510 int32_t refcount; 511 #elif defined(SCTP_PROCESS_LEVEL_LOCKS) 512 userland_mutex_t inp_mtx; 513 userland_mutex_t inp_create_mtx; 514 userland_mutex_t inp_rdata_mtx; 515 int32_t refcount; 516 #elif defined(__APPLE__) && !defined(__Userspace__) 517 #if defined(SCTP_APPLE_RWLOCK) 518 lck_rw_t *inp_mtx; 519 #else 520 lck_mtx_t *inp_mtx; 521 #endif 522 lck_mtx_t *inp_create_mtx; 523 lck_mtx_t *inp_rdata_mtx; 524 #elif defined(_WIN32) && !defined(__Userspace__) 525 struct rwlock inp_lock; 526 struct spinlock inp_create_lock; 527 struct spinlock inp_rdata_lock; 528 int32_t refcount; 529 #elif defined(__Userspace__) 530 int32_t refcount; 531 #endif 532 #if defined(__APPLE__) && !defined(__Userspace__) 533 int32_t refcount; 534 535 uint32_t lock_caller1; 536 uint32_t lock_caller2; 537 uint32_t lock_caller3; 538 uint32_t unlock_caller1; 539 uint32_t unlock_caller2; 540 uint32_t unlock_caller3; 541 uint32_t getlock_caller1; 542 uint32_t getlock_caller2; 543 uint32_t getlock_caller3; 544 uint32_t gen_count; 545 uint32_t lock_gen_count; 546 uint32_t unlock_gen_count; 547 uint32_t getlock_gen_count; 548 549 uint32_t i_am_here_file; 550 uint32_t i_am_here_line; 551 #endif 552 uint32_t def_vrf_id; 553 uint16_t fibnum; 554 #ifdef SCTP_MVRF 555 uint32_t *m_vrf_ids; 556 uint32_t num_vrfs; 557 uint32_t vrf_size; 558 #endif 559 uint32_t total_sends; 560 uint32_t total_recvs; 561 uint32_t last_abort_code; 562 uint32_t total_nospaces; 563 struct sctpasochead *sctp_asocidhash; 564 u_long hashasocidmark; 565 uint32_t sctp_associd_counter; 566 567 #ifdef SCTP_ASOCLOG_OF_TSNS 568 struct sctp_pcbtsn_rlog readlog[SCTP_READ_LOG_SIZE]; 569 uint32_t readlog_index; 570 #endif 571 #if defined(__Userspace__) 572 void *ulp_info; 573 int (*recv_callback)(struct socket *, union sctp_sockstore, void *, size_t, 574 struct sctp_rcvinfo, int, void *); 575 uint32_t send_sb_threshold; 576 int (*send_callback)(struct socket *, uint32_t, void *); 577 #endif 578 }; 579 580 #if defined(__Userspace__) 581 int register_recv_cb (struct socket *, 582 int (*)(struct socket *, union sctp_sockstore, void *, size_t, 583 struct sctp_rcvinfo, int, void *)); 584 int register_send_cb (struct socket *, uint32_t, int (*)(struct socket *, uint32_t, void *)); 585 int register_ulp_info (struct socket *, void *); 586 int retrieve_ulp_info (struct socket *, void **); 587 588 #endif 589 struct sctp_tcb { 590 struct socket *sctp_socket; /* back pointer to socket */ 591 struct sctp_inpcb *sctp_ep; /* back pointer to ep */ 592 LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash 593 * table */ 594 LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the 595 * TCB's */ 596 LIST_ENTRY(sctp_tcb) sctp_tcbasocidhash; /* next link in asocid 597 * hash table 598 */ 599 LIST_ENTRY(sctp_tcb) sctp_asocs; /* vtag hash list */ 600 struct sctp_block_entry *block_entry; /* pointer locked by socket 601 * send buffer */ 602 struct sctp_association asoc; 603 /*- 604 * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the 605 * tcb_lock. Its special in this way to help avoid extra mutex calls 606 * in the reading of data. 607 */ 608 uint32_t freed_by_sorcv_sincelast; 609 uint32_t total_sends; 610 uint32_t total_recvs; 611 int freed_from_where; 612 uint16_t rport; /* remote port in network format */ 613 uint16_t resv; 614 #if defined(__FreeBSD__) && !defined(__Userspace__) 615 struct mtx tcb_mtx; 616 #elif defined(SCTP_PROCESS_LEVEL_LOCKS) 617 userland_mutex_t tcb_mtx; 618 #elif defined(__APPLE__) && !defined(__Userspace__) 619 lck_mtx_t* tcb_mtx; 620 #elif defined(_WIN32) && !defined(__Userspace__) 621 struct spinlock tcb_lock; 622 #elif defined(__Userspace__) 623 #endif 624 #if defined(__APPLE__) && !defined(__Userspace__) 625 uint32_t caller1; 626 uint32_t caller2; 627 uint32_t caller3; 628 #endif 629 }; 630 631 #if defined(__FreeBSD__) && !defined(__Userspace__) 632 #include <netinet/sctp_lock_bsd.h> 633 #elif defined(__APPLE__) && !defined(__Userspace__) 634 /* 635 * Apple MacOS X 10.4 "Tiger" 636 */ 637 638 #include <netinet/sctp_lock_apple_fg.h> 639 640 #elif defined(SCTP_PROCESS_LEVEL_LOCKS) 641 642 #include <netinet/sctp_process_lock.h> 643 644 #elif defined(_WIN32) && !defined(__Userspace__) 645 646 #include <netinet/sctp_lock_windows.h> 647 648 #elif defined(__Userspace__) 649 650 #include <netinet/sctp_lock_userspace.h> 651 652 #else 653 /* 654 * Pre-5.x FreeBSD, and others. 655 */ 656 #include <netinet/sctp_lock_empty.h> 657 #endif 658 659 #if defined(_KERNEL) || defined(__Userspace__) 660 661 /* Attention Julian, this is the extern that 662 * goes with the base info. sctp_pcb.c has 663 * the real definition. 664 */ 665 #if defined(__FreeBSD__) && !defined(__Userspace__) 666 VNET_DECLARE(struct sctp_base_info, system_base_info); 667 #else 668 extern struct sctp_base_info system_base_info; 669 #endif 670 671 #ifdef INET6 672 int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b); 673 #endif 674 675 void sctp_fill_pcbinfo(struct sctp_pcbinfo *); 676 677 struct sctp_ifn * 678 sctp_find_ifn(void *ifn, uint32_t ifn_index); 679 680 struct sctp_vrf *sctp_allocate_vrf(int vrfid); 681 struct sctp_vrf *sctp_find_vrf(uint32_t vrfid); 682 void sctp_free_vrf(struct sctp_vrf *vrf); 683 684 /*- 685 * Change address state, can be used if 686 * O/S supports telling transports about 687 * changes to IFA/IFN's (link layer triggers). 688 * If a ifn goes down, we will do src-addr-selection 689 * and NOT use that, as a source address. This does 690 * not stop the routing system from routing out 691 * that interface, but we won't put it as a source. 692 */ 693 void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index); 694 void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index); 695 696 struct sctp_ifa * 697 sctp_add_addr_to_vrf(uint32_t vrfid, 698 void *ifn, uint32_t ifn_index, uint32_t ifn_type, 699 const char *if_name, 700 void *ifa, struct sockaddr *addr, uint32_t ifa_flags, 701 int dynamic_add); 702 703 void sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu); 704 705 void sctp_free_ifn(struct sctp_ifn *sctp_ifnp); 706 void sctp_free_ifa(struct sctp_ifa *sctp_ifap); 707 708 void sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr, 709 uint32_t ifn_index, const char *if_name); 710 711 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *); 712 713 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t); 714 715 #if defined(__FreeBSD__) && !defined(__Userspace__) 716 int 717 sctp_inpcb_bind(struct socket *, struct sockaddr *, 718 struct sctp_ifa *, struct thread *); 719 int 720 sctp_inpcb_bind_locked(struct sctp_inpcb *, struct sockaddr *, 721 struct sctp_ifa *, struct thread *); 722 #elif defined(_WIN32) && !defined(__Userspace__) 723 int 724 sctp_inpcb_bind(struct socket *, struct sockaddr *, 725 struct sctp_ifa *, PKTHREAD); 726 int 727 sctp_inpcb_bind_locked(struct sctp_inpcb *, struct sockaddr *, 728 struct sctp_ifa *, PKTHREAD); 729 #else 730 /* struct proc is a dummy for __Userspace__ */ 731 int 732 sctp_inpcb_bind(struct socket *, struct sockaddr *, 733 struct sctp_ifa *, struct proc *); 734 int 735 sctp_inpcb_bind_locked(struct sctp_inpcb *, struct sockaddr *, 736 struct sctp_ifa *, struct proc *); 737 #endif 738 739 struct sctp_tcb * 740 sctp_findassociation_addr(struct mbuf *, int, 741 struct sockaddr *, struct sockaddr *, 742 struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **, 743 struct sctp_nets **, uint32_t vrf_id); 744 745 struct sctp_tcb * 746 sctp_findassociation_addr_sa(struct sockaddr *, 747 struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t); 748 749 void 750 sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *, 751 struct sctp_tcb *); 752 753 /*- 754 * For this call ep_addr, the to is the destination endpoint address of the 755 * peer (relative to outbound). The from field is only used if the TCP model 756 * is enabled and helps distingush amongst the subset bound (non-boundall). 757 * The TCP model MAY change the actual ep field, this is why it is passed. 758 */ 759 struct sctp_tcb * 760 sctp_findassociation_ep_addr(struct sctp_inpcb **, 761 struct sockaddr *, struct sctp_nets **, struct sockaddr *, 762 struct sctp_tcb *); 763 764 struct sctp_tcb * 765 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock); 766 767 struct sctp_tcb * 768 sctp_findassociation_ep_asocid(struct sctp_inpcb *, 769 sctp_assoc_t, int); 770 771 struct sctp_tcb * 772 sctp_findassociation_ep_asconf(struct mbuf *, int, struct sockaddr *, 773 struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **, uint32_t vrf_id); 774 775 int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id); 776 777 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id); 778 779 void sctp_inpcb_free(struct sctp_inpcb *, int, int); 780 781 #define SCTP_DONT_INITIALIZE_AUTH_PARAMS 0 782 #define SCTP_INITIALIZE_AUTH_PARAMS 1 783 784 #if defined(__FreeBSD__) && !defined(__Userspace__) 785 struct sctp_tcb * 786 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, 787 int *, uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, 788 struct thread *, int); 789 struct sctp_tcb * 790 sctp_aloc_assoc_connected(struct sctp_inpcb *, struct sockaddr *, 791 int *, uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, 792 struct thread *, int); 793 #elif defined(_WIN32) && !defined(__Userspace__) 794 struct sctp_tcb * 795 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, int *, uint32_t, 796 uint32_t, uint32_t, uint16_t, uint16_t, PKTHREAD, int); 797 struct sctp_tcb * 798 sctp_aloc_assoc_connected(struct sctp_inpcb *, struct sockaddr *, int *, uint32_t, 799 uint32_t, uint32_t, uint16_t, uint16_t, PKTHREAD, int); 800 #else 801 /* proc will be NULL for __Userspace__ */ 802 struct sctp_tcb * 803 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, int *, uint32_t, 804 uint32_t, uint32_t, uint16_t, uint16_t, struct proc *, int); 805 struct sctp_tcb * 806 sctp_aloc_assoc_connected(struct sctp_inpcb *, struct sockaddr *, int *, uint32_t, 807 uint32_t, uint32_t, uint16_t, uint16_t, struct proc *, int); 808 #endif 809 810 int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int); 811 812 void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t); 813 814 void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *); 815 816 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets **, uint16_t, int, int); 817 818 void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *); 819 820 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *); 821 822 #if defined(__Userspace__) 823 void sctp_pcb_init(int); 824 #else 825 void sctp_pcb_init(void); 826 #endif 827 828 void sctp_pcb_finish(void); 829 830 void sctp_add_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *); 831 void sctp_del_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *); 832 833 int 834 sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int, 835 struct sockaddr *, struct sockaddr *, struct sockaddr *, uint16_t); 836 837 int 838 sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *, 839 struct sctp_nets *); 840 841 bool 842 sctp_is_vtag_good(uint32_t, uint16_t lport, uint16_t rport, struct timeval *); 843 844 int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *); 845 846 int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp); 847 848 void sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh); 849 850 void 851 sctp_pcb_add_flags(struct sctp_inpcb *, uint32_t); 852 853 /*- 854 * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg 855 * indicates run on ONLY assoc's of the specified endpoint. 856 */ 857 int 858 sctp_initiate_iterator(inp_func inpf, 859 asoc_func af, 860 inp_func inpe, 861 uint32_t, uint32_t, 862 uint32_t, void *, 863 uint32_t, 864 end_func ef, 865 struct sctp_inpcb *, 866 uint8_t co_off); 867 #if defined(__FreeBSD__) && !defined(__Userspace__) 868 #if defined(SCTP_MCORE_INPUT) && defined(SMP) 869 void 870 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use); 871 872 #endif 873 #endif 874 875 #endif /* _KERNEL */ 876 #endif /* !__sctp_pcb_h__ */