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 #if defined(__FreeBSD__) && !defined(__Userspace__) 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD: head/sys/netinet/sctp_pcb.h 362106 2020-06-12 16:31:13Z tuexen $"); 38 #endif 39 40 #ifndef _NETINET_SCTP_PCB_H_ 41 #define _NETINET_SCTP_PCB_H_ 42 43 #include <netinet/sctp_os.h> 44 #include <netinet/sctp.h> 45 #include <netinet/sctp_constants.h> 46 #include <netinet/sctp_sysctl.h> 47 48 LIST_HEAD(sctppcbhead, sctp_inpcb); 49 LIST_HEAD(sctpasochead, sctp_tcb); 50 LIST_HEAD(sctpladdr, sctp_laddr); 51 LIST_HEAD(sctpvtaghead, sctp_tagblock); 52 LIST_HEAD(sctp_vrflist, sctp_vrf); 53 LIST_HEAD(sctp_ifnlist, sctp_ifn); 54 LIST_HEAD(sctp_ifalist, sctp_ifa); 55 TAILQ_HEAD(sctp_readhead, sctp_queued_to_read); 56 TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending); 57 58 #include <netinet/sctp_structs.h> 59 #include <netinet/sctp_auth.h> 60 61 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask) 62 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask) 63 64 struct sctp_vrf { 65 LIST_ENTRY (sctp_vrf) next_vrf; 66 struct sctp_ifalist *vrf_addr_hash; 67 struct sctp_ifnlist ifnlist; 68 uint32_t vrf_id; 69 uint32_t tbl_id_v4; /* default v4 table id */ 70 uint32_t tbl_id_v6; /* default v6 table id */ 71 uint32_t total_ifa_count; 72 u_long vrf_addr_hashmark; 73 uint32_t refcount; 74 }; 75 76 struct sctp_ifn { 77 struct sctp_ifalist ifalist; 78 struct sctp_vrf *vrf; 79 LIST_ENTRY(sctp_ifn) next_ifn; 80 LIST_ENTRY(sctp_ifn) next_bucket; 81 void *ifn_p; /* never access without appropriate lock */ 82 uint32_t ifn_mtu; 83 uint32_t ifn_type; 84 uint32_t ifn_index; /* shorthand way to look at ifn for reference */ 85 uint32_t refcount; /* number of reference held should be >= ifa_count */ 86 uint32_t ifa_count; /* IFA's we hold (in our list - ifalist)*/ 87 uint32_t num_v6; /* number of v6 addresses */ 88 uint32_t num_v4; /* number of v4 addresses */ 89 uint32_t registered_af; /* registered address family for i/f events */ 90 char ifn_name[SCTP_IFNAMSIZ]; 91 }; 92 93 /* SCTP local IFA flags */ 94 #define SCTP_ADDR_VALID 0x00000001 /* its up and active */ 95 #define SCTP_BEING_DELETED 0x00000002 /* being deleted, 96 * when refcount = 0. Note 97 * that it is pulled from the ifn list 98 * and ifa_p is nulled right away but 99 * it cannot be freed until the last *net 100 * pointing to it is deleted. 101 */ 102 #define SCTP_ADDR_DEFER_USE 0x00000004 /* Hold off using this one */ 103 #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008 104 105 struct sctp_ifa { 106 LIST_ENTRY(sctp_ifa) next_ifa; 107 LIST_ENTRY(sctp_ifa) next_bucket; 108 struct sctp_ifn *ifn_p; /* back pointer to parent ifn */ 109 void *ifa; /* pointer to ifa, needed for flag 110 * update for that we MUST lock 111 * appropriate locks. This is for V6. 112 */ 113 union sctp_sockstore address; 114 uint32_t refcount; /* number of folks referring to this */ 115 uint32_t flags; 116 uint32_t localifa_flags; 117 uint32_t vrf_id; /* vrf_id of this addr (for deleting) */ 118 uint8_t src_is_loop; 119 uint8_t src_is_priv; 120 uint8_t src_is_glob; 121 uint8_t resv; 122 }; 123 124 struct sctp_laddr { 125 LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */ 126 struct sctp_ifa *ifa; 127 uint32_t action; /* Used during asconf and adding 128 * if no-zero src-addr selection will 129 * not consider this address. 130 */ 131 struct timeval start_time; /* time when this address was created */ 132 }; 133 134 struct sctp_block_entry { 135 int error; 136 }; 137 138 struct sctp_timewait { 139 uint32_t tv_sec_at_expire; /* the seconds from boot to expire */ 140 uint32_t v_tag; /* the vtag that can not be reused */ 141 uint16_t lport; /* the local port used in vtag */ 142 uint16_t rport; /* the remote port used in vtag */ 143 }; 144 145 struct sctp_tagblock { 146 LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock; 147 struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK]; 148 }; 149 150 151 struct sctp_epinfo { 152 #if defined(__FreeBSD__) && !defined(__Userspace__) 153 #ifdef INET 154 struct socket *udp4_tun_socket; 155 #endif 156 #ifdef INET6 157 struct socket *udp6_tun_socket; 158 #endif 159 #endif 160 struct sctpasochead *sctp_asochash; 161 u_long hashasocmark; 162 163 struct sctppcbhead *sctp_ephash; 164 u_long hashmark; 165 166 /*- 167 * The TCP model represents a substantial overhead in that we get an 168 * additional hash table to keep explicit connections in. The 169 * listening TCP endpoint will exist in the usual ephash above and 170 * accept only INIT's. It will be incapable of sending off an INIT. 171 * When a dg arrives we must look in the normal ephash. If we find a 172 * TCP endpoint that will tell us to go to the specific endpoint 173 * hash and re-hash to find the right assoc/socket. If we find a UDP 174 * model socket we then must complete the lookup. If this fails, 175 * i.e. no association can be found then we must continue to see if 176 * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket 177 * acts like a TCP model connected socket). 178 */ 179 struct sctppcbhead *sctp_tcpephash; 180 u_long hashtcpmark; 181 uint32_t hashtblsize; 182 183 struct sctp_vrflist *sctp_vrfhash; 184 u_long hashvrfmark; 185 186 struct sctp_ifnlist *vrf_ifn_hash; 187 u_long vrf_ifn_hashmark; 188 189 struct sctppcbhead listhead; 190 struct sctpladdr addr_wq; 191 192 #if defined(__APPLE__) && !defined(__Userspace__) 193 struct inpcbhead inplisthead; 194 struct inpcbinfo sctbinfo; 195 #endif 196 /* ep zone info */ 197 sctp_zone_t ipi_zone_ep; 198 sctp_zone_t ipi_zone_asoc; 199 sctp_zone_t ipi_zone_laddr; 200 sctp_zone_t ipi_zone_net; 201 sctp_zone_t ipi_zone_chunk; 202 sctp_zone_t ipi_zone_readq; 203 sctp_zone_t ipi_zone_strmoq; 204 sctp_zone_t ipi_zone_asconf; 205 sctp_zone_t ipi_zone_asconf_ack; 206 207 #if defined(__FreeBSD__) && !defined(__Userspace__) 208 struct rwlock ipi_ep_mtx; 209 struct mtx ipi_iterator_wq_mtx; 210 struct rwlock ipi_addr_mtx; 211 struct mtx ipi_pktlog_mtx; 212 struct mtx wq_addr_mtx; 213 #elif defined(SCTP_PROCESS_LEVEL_LOCKS) 214 userland_mutex_t ipi_ep_mtx; 215 userland_mutex_t ipi_addr_mtx; 216 userland_mutex_t ipi_count_mtx; 217 userland_mutex_t ipi_pktlog_mtx; 218 userland_mutex_t wq_addr_mtx; 219 #elif defined(__APPLE__) && !defined(__Userspace__) 220 #ifdef _KERN_LOCKS_H_ 221 lck_mtx_t *ipi_addr_mtx; 222 lck_mtx_t *ipi_count_mtx; 223 lck_mtx_t *ipi_pktlog_mtx; 224 lck_mtx_t *logging_mtx; 225 lck_mtx_t *wq_addr_mtx; 226 #else 227 void *ipi_count_mtx; 228 void *logging_mtx; 229 #endif /* _KERN_LOCKS_H_ */ 230 #elif defined(_WIN32) && !defined(__Userspace__) 231 struct rwlock ipi_ep_lock; 232 struct rwlock ipi_addr_lock; 233 struct spinlock ipi_pktlog_mtx; 234 struct rwlock wq_addr_mtx; 235 #elif defined(__Userspace__) 236 #endif 237 uint32_t ipi_count_ep; 238 239 /* assoc/tcb zone info */ 240 uint32_t ipi_count_asoc; 241 242 /* local addrlist zone info */ 243 uint32_t ipi_count_laddr; 244 245 /* remote addrlist zone info */ 246 uint32_t ipi_count_raddr; 247 248 /* chunk structure list for output */ 249 uint32_t ipi_count_chunk; 250 251 /* socket queue zone info */ 252 uint32_t ipi_count_readq; 253 254 /* socket queue zone info */ 255 uint32_t ipi_count_strmoq; 256 257 /* Number of vrfs */ 258 uint32_t ipi_count_vrfs; 259 260 /* Number of ifns */ 261 uint32_t ipi_count_ifns; 262 263 /* Number of ifas */ 264 uint32_t ipi_count_ifas; 265 266 /* system wide number of free chunks hanging around */ 267 uint32_t ipi_free_chunks; 268 uint32_t ipi_free_strmoq; 269 270 struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE]; 271 272 /* address work queue handling */ 273 struct sctp_timer addr_wq_timer; 274 275 #if defined(_SCTP_NEEDS_CALLOUT_) || defined(_USER_SCTP_NEEDS_CALLOUT_) 276 struct calloutlist callqueue; 277 #endif 278 }; 279 280 281 struct sctp_base_info { 282 /* All static structures that 283 * anchor the system must be here. 284 */ 285 struct sctp_epinfo sctppcbinfo; 286 #if defined(__FreeBSD__) && !defined(__Userspace__) 287 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT) 288 struct sctpstat *sctpstat; 289 #else 290 struct sctpstat sctpstat; 291 #endif 292 #else 293 struct sctpstat sctpstat; 294 #endif 295 struct sctp_sysctl sctpsysctl; 296 uint8_t first_time; 297 char sctp_pcb_initialized; 298 #if defined(SCTP_PACKET_LOGGING) 299 int packet_log_writers; 300 int packet_log_end; 301 uint8_t packet_log_buffer[SCTP_PACKET_LOG_SIZE]; 302 #endif 303 #if defined(__FreeBSD__) && !defined(__Userspace__) 304 eventhandler_tag eh_tag; 305 #endif 306 #if defined(__APPLE__) && !defined(__Userspace__) 307 int sctp_main_timer_ticks; 308 #endif 309 #if defined(__Userspace__) 310 userland_mutex_t timer_mtx; 311 userland_thread_t timer_thread; 312 int timer_thread_should_exit; 313 int iterator_thread_started; 314 int timer_thread_started; 315 #if !defined(_WIN32) 316 pthread_mutexattr_t mtx_attr; 317 #if defined(INET) || defined(INET6) 318 int userspace_route; 319 userland_thread_t recvthreadroute; 320 #endif 321 #endif 322 #ifdef INET 323 #if defined(_WIN32) && !defined(__MINGW32__) 324 SOCKET userspace_rawsctp; 325 SOCKET userspace_udpsctp; 326 #else 327 int userspace_rawsctp; 328 int userspace_udpsctp; 329 #endif 330 userland_thread_t recvthreadraw; 331 userland_thread_t recvthreadudp; 332 #endif 333 #ifdef INET6 334 #if defined(_WIN32) && !defined(__MINGW32__) 335 SOCKET userspace_rawsctp6; 336 SOCKET userspace_udpsctp6; 337 #else 338 int userspace_rawsctp6; 339 int userspace_udpsctp6; 340 #endif 341 userland_thread_t recvthreadraw6; 342 userland_thread_t recvthreadudp6; 343 #endif 344 int (*conn_output)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df); 345 void (*debug_printf)(const char *format, ...); 346 int crc32c_offloaded; 347 #endif 348 }; 349 350 /*- 351 * Here we have all the relevant information for each SCTP entity created. We 352 * will need to modify this as approprate. We also need to figure out how to 353 * access /dev/random. 354 */ 355 struct sctp_pcb { 356 unsigned int time_of_secret_change; /* number of seconds from 357 * timeval.tv_sec */ 358 uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS]; 359 unsigned int size_of_a_cookie; 360 361 uint32_t sctp_timeoutticks[SCTP_NUM_TMRS]; 362 uint32_t sctp_minrto; 363 uint32_t sctp_maxrto; 364 uint32_t initial_rto; 365 uint32_t initial_init_rto_max; 366 367 unsigned int sctp_sack_freq; 368 uint32_t sctp_sws_sender; 369 uint32_t sctp_sws_receiver; 370 371 uint32_t sctp_default_cc_module; 372 uint32_t sctp_default_ss_module; 373 /* authentication related fields */ 374 struct sctp_keyhead shared_keys; 375 sctp_auth_chklist_t *local_auth_chunks; 376 sctp_hmaclist_t *local_hmacs; 377 uint16_t default_keyid; 378 uint32_t default_mtu; 379 380 /* various thresholds */ 381 /* Max times I will init at a guy */ 382 uint16_t max_init_times; 383 384 /* Max times I will send before we consider someone dead */ 385 uint16_t max_send_times; 386 387 uint16_t def_net_failure; 388 389 uint16_t def_net_pf_threshold; 390 391 /* number of streams to pre-open on a association */ 392 uint16_t pre_open_stream_count; 393 uint16_t max_open_streams_intome; 394 395 /* random number generator */ 396 uint32_t random_counter; 397 uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE]; 398 uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE]; 399 400 /* 401 * This timer is kept running per endpoint. When it fires it will 402 * change the secret key. The default is once a hour 403 */ 404 struct sctp_timer signature_change; 405 406 uint32_t def_cookie_life; 407 /* defaults to 0 */ 408 uint32_t auto_close_time; 409 uint32_t initial_sequence_debug; 410 uint32_t adaptation_layer_indicator; 411 uint8_t adaptation_layer_indicator_provided; 412 uint32_t store_at; 413 uint32_t max_burst; 414 uint32_t fr_max_burst; 415 #ifdef INET6 416 uint32_t default_flowlabel; 417 #endif 418 uint8_t default_dscp; 419 char current_secret_number; 420 char last_secret_number; 421 uint16_t port; /* remote UDP encapsulation port */ 422 }; 423 424 #ifndef SCTP_ALIGNMENT 425 #define SCTP_ALIGNMENT 32 426 #endif 427 428 #ifndef SCTP_ALIGNM1 429 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1) 430 #endif 431 432 #define sctp_lport ip_inp.inp.inp_lport 433 434 struct sctp_pcbtsn_rlog { 435 uint32_t vtag; 436 uint16_t strm; 437 uint16_t seq; 438 uint16_t sz; 439 uint16_t flgs; 440 }; 441 #define SCTP_READ_LOG_SIZE 135 /* we choose the number to make a pcb a page */ 442 443 444 struct sctp_inpcb { 445 /*- 446 * put an inpcb in front of it all, kind of a waste but we need to 447 * for compatibility with all the other stuff. 448 */ 449 union { 450 struct inpcb inp; 451 char align[(sizeof(struct inpcb) + SCTP_ALIGNM1) & 452 ~SCTP_ALIGNM1]; 453 } ip_inp; 454 455 #if defined(__APPLE__) && !defined(__Userspace__) 456 /* leave some space in case i386 inpcb is bigger than ppc */ 457 uint8_t padding[128]; 458 #endif 459 460 /* Socket buffer lock protects read_queue and of course sb_cc */ 461 struct sctp_readhead read_queue; 462 463 LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */ 464 /* hash of all endpoints for model */ 465 LIST_ENTRY(sctp_inpcb) sctp_hash; 466 /* count of local addresses bound, 0 if bound all */ 467 int laddr_count; 468 469 /* list of addrs in use by the EP, NULL if bound-all */ 470 struct sctpladdr sctp_addr_list; 471 /* used for source address selection rotation when we are subset bound */ 472 struct sctp_laddr *next_addr_touse; 473 474 /* back pointer to our socket */ 475 struct socket *sctp_socket; 476 uint64_t sctp_features; /* Feature flags */ 477 uint32_t sctp_flags; /* INP state flag set */ 478 uint32_t sctp_mobility_features; /* Mobility Feature flags */ 479 struct sctp_pcb sctp_ep;/* SCTP ep data */ 480 /* head of the hash of all associations */ 481 struct sctpasochead *sctp_tcbhash; 482 u_long sctp_hashmark; 483 /* head of the list of all associations */ 484 struct sctpasochead sctp_asoc_list; 485 #ifdef SCTP_TRACK_FREED_ASOCS 486 struct sctpasochead sctp_asoc_free_list; 487 #endif 488 struct sctp_iterator *inp_starting_point_for_iterator; 489 uint32_t sctp_frag_point; 490 uint32_t partial_delivery_point; 491 uint32_t sctp_context; 492 uint32_t max_cwnd; 493 uint8_t local_strreset_support; 494 uint32_t sctp_cmt_on_off; 495 uint8_t ecn_supported; 496 uint8_t prsctp_supported; 497 uint8_t auth_supported; 498 uint8_t idata_supported; 499 uint8_t asconf_supported; 500 uint8_t reconfig_supported; 501 uint8_t nrsack_supported; 502 uint8_t pktdrop_supported; 503 struct sctp_nonpad_sndrcvinfo def_send; 504 /*- 505 * These three are here for the sosend_dgram 506 * (pkt, pkt_last and control). 507 * routine. However, I don't think anyone in 508 * the current FreeBSD kernel calls this. So 509 * they are candidates with sctp_sendm for 510 * de-supporting. 511 */ 512 struct mbuf *pkt, *pkt_last; 513 struct mbuf *control; 514 #if defined(__FreeBSD__) && !defined(__Userspace__) 515 struct mtx inp_mtx; 516 struct mtx inp_create_mtx; 517 struct mtx inp_rdata_mtx; 518 int32_t refcount; 519 #elif defined(SCTP_PROCESS_LEVEL_LOCKS) 520 userland_mutex_t inp_mtx; 521 userland_mutex_t inp_create_mtx; 522 userland_mutex_t inp_rdata_mtx; 523 int32_t refcount; 524 #elif defined(__APPLE__) && !defined(__Userspace__) 525 #if defined(SCTP_APPLE_RWLOCK) 526 lck_rw_t *inp_mtx; 527 #else 528 lck_mtx_t *inp_mtx; 529 #endif 530 lck_mtx_t *inp_create_mtx; 531 lck_mtx_t *inp_rdata_mtx; 532 #elif defined(_WIN32) && !defined(__Userspace__) 533 struct rwlock inp_lock; 534 struct spinlock inp_create_lock; 535 struct spinlock inp_rdata_lock; 536 int32_t refcount; 537 #elif defined(__Userspace__) 538 int32_t refcount; 539 #endif 540 #if defined(__APPLE__) && !defined(__Userspace__) 541 int32_t refcount; 542 543 uint32_t lock_caller1; 544 uint32_t lock_caller2; 545 uint32_t lock_caller3; 546 uint32_t unlock_caller1; 547 uint32_t unlock_caller2; 548 uint32_t unlock_caller3; 549 uint32_t getlock_caller1; 550 uint32_t getlock_caller2; 551 uint32_t getlock_caller3; 552 uint32_t gen_count; 553 uint32_t lock_gen_count; 554 uint32_t unlock_gen_count; 555 uint32_t getlock_gen_count; 556 557 uint32_t i_am_here_file; 558 uint32_t i_am_here_line; 559 #endif 560 uint32_t def_vrf_id; 561 uint16_t fibnum; 562 #ifdef SCTP_MVRF 563 uint32_t *m_vrf_ids; 564 uint32_t num_vrfs; 565 uint32_t vrf_size; 566 #endif 567 uint32_t total_sends; 568 uint32_t total_recvs; 569 uint32_t last_abort_code; 570 uint32_t total_nospaces; 571 struct sctpasochead *sctp_asocidhash; 572 u_long hashasocidmark; 573 uint32_t sctp_associd_counter; 574 575 #ifdef SCTP_ASOCLOG_OF_TSNS 576 struct sctp_pcbtsn_rlog readlog[SCTP_READ_LOG_SIZE]; 577 uint32_t readlog_index; 578 #endif 579 #if defined(__Userspace__) 580 void *ulp_info; 581 int (*recv_callback)(struct socket *, union sctp_sockstore, void *, size_t, 582 struct sctp_rcvinfo, int, void *); 583 uint32_t send_sb_threshold; 584 int (*send_callback)(struct socket *, uint32_t); 585 #endif 586 }; 587 588 #if defined(__Userspace__) 589 int register_recv_cb (struct socket *, 590 int (*)(struct socket *, union sctp_sockstore, void *, size_t, 591 struct sctp_rcvinfo, int, void *)); 592 int register_send_cb (struct socket *, uint32_t, int (*)(struct socket *, uint32_t)); 593 int register_ulp_info (struct socket *, void *); 594 int retrieve_ulp_info (struct socket *, void **); 595 596 #endif 597 struct sctp_tcb { 598 struct socket *sctp_socket; /* back pointer to socket */ 599 struct sctp_inpcb *sctp_ep; /* back pointer to ep */ 600 LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash 601 * table */ 602 LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the 603 * TCB's */ 604 LIST_ENTRY(sctp_tcb) sctp_tcbasocidhash; /* next link in asocid 605 * hash table 606 */ 607 LIST_ENTRY(sctp_tcb) sctp_asocs; /* vtag hash list */ 608 struct sctp_block_entry *block_entry; /* pointer locked by socket 609 * send buffer */ 610 struct sctp_association asoc; 611 /*- 612 * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the 613 * tcb_lock. Its special in this way to help avoid extra mutex calls 614 * in the reading of data. 615 */ 616 uint32_t freed_by_sorcv_sincelast; 617 uint32_t total_sends; 618 uint32_t total_recvs; 619 int freed_from_where; 620 uint16_t rport; /* remote port in network format */ 621 uint16_t resv; 622 #if defined(__FreeBSD__) && !defined(__Userspace__) 623 struct mtx tcb_mtx; 624 struct mtx tcb_send_mtx; 625 #elif defined(SCTP_PROCESS_LEVEL_LOCKS) 626 userland_mutex_t tcb_mtx; 627 userland_mutex_t tcb_send_mtx; 628 #elif defined(__APPLE__) && !defined(__Userspace__) 629 lck_mtx_t* tcb_mtx; 630 lck_mtx_t* tcb_send_mtx; 631 #elif defined(_WIN32) && !defined(__Userspace__) 632 struct spinlock tcb_lock; 633 struct spinlock tcb_send_lock; 634 #elif defined(__Userspace__) 635 #endif 636 #if defined(__APPLE__) && !defined(__Userspace__) 637 uint32_t caller1; 638 uint32_t caller2; 639 uint32_t caller3; 640 #endif 641 }; 642 643 644 #if defined(__FreeBSD__) && !defined(__Userspace__) 645 646 #include <netinet/sctp_lock_bsd.h> 647 648 #elif defined(__APPLE__) && !defined(__Userspace__) 649 /* 650 * Apple MacOS X 10.4 "Tiger" 651 */ 652 653 #include <netinet/sctp_lock_apple_fg.h> 654 655 #elif defined(SCTP_PROCESS_LEVEL_LOCKS) 656 657 #include <netinet/sctp_process_lock.h> 658 659 #elif defined(_WIN32) && !defined(__Userspace__) 660 661 #include <netinet/sctp_lock_windows.h> 662 663 #elif defined(__Userspace__) 664 665 #include <netinet/sctp_lock_userspace.h> 666 667 #else 668 /* 669 * Pre-5.x FreeBSD, and others. 670 */ 671 #include <netinet/sctp_lock_empty.h> 672 #endif 673 674 #if defined(_KERNEL) || defined(__Userspace__) 675 676 /* Attention Julian, this is the extern that 677 * goes with the base info. sctp_pcb.c has 678 * the real definition. 679 */ 680 #if defined(__FreeBSD__) && !defined(__Userspace__) 681 VNET_DECLARE(struct sctp_base_info, system_base_info) ; 682 #else 683 extern struct sctp_base_info system_base_info; 684 #endif 685 686 #ifdef INET6 687 int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b); 688 #endif 689 690 void sctp_fill_pcbinfo(struct sctp_pcbinfo *); 691 692 struct sctp_ifn * 693 sctp_find_ifn(void *ifn, uint32_t ifn_index); 694 695 struct sctp_vrf *sctp_allocate_vrf(int vrfid); 696 struct sctp_vrf *sctp_find_vrf(uint32_t vrfid); 697 void sctp_free_vrf(struct sctp_vrf *vrf); 698 699 /*- 700 * Change address state, can be used if 701 * O/S supports telling transports about 702 * changes to IFA/IFN's (link layer triggers). 703 * If a ifn goes down, we will do src-addr-selection 704 * and NOT use that, as a source address. This does 705 * not stop the routing system from routing out 706 * that interface, but we won't put it as a source. 707 */ 708 void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index); 709 void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index); 710 711 struct sctp_ifa * 712 sctp_add_addr_to_vrf(uint32_t vrfid, 713 void *ifn, uint32_t ifn_index, uint32_t ifn_type, 714 const char *if_name, 715 void *ifa, struct sockaddr *addr, uint32_t ifa_flags, 716 int dynamic_add); 717 718 void sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu); 719 720 void sctp_free_ifn(struct sctp_ifn *sctp_ifnp); 721 void sctp_free_ifa(struct sctp_ifa *sctp_ifap); 722 723 724 void sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr, 725 uint32_t ifn_index, const char *if_name); 726 727 728 729 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *); 730 731 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t); 732 733 #if defined(__FreeBSD__) && !defined(__Userspace__) 734 int sctp_inpcb_bind(struct socket *, struct sockaddr *, 735 struct sctp_ifa *,struct thread *); 736 #elif defined(_WIN32) && !defined(__Userspace__) 737 int sctp_inpcb_bind(struct socket *, struct sockaddr *, 738 struct sctp_ifa *,PKTHREAD); 739 #else 740 /* struct proc is a dummy for __Userspace__ */ 741 int sctp_inpcb_bind(struct socket *, struct sockaddr *, 742 struct sctp_ifa *, struct proc *); 743 #endif 744 745 struct sctp_tcb * 746 sctp_findassociation_addr(struct mbuf *, int, 747 struct sockaddr *, struct sockaddr *, 748 struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **, 749 struct sctp_nets **, uint32_t vrf_id); 750 751 struct sctp_tcb * 752 sctp_findassociation_addr_sa(struct sockaddr *, 753 struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t); 754 755 void 756 sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *, 757 struct sctp_tcb *); 758 759 /*- 760 * For this call ep_addr, the to is the destination endpoint address of the 761 * peer (relative to outbound). The from field is only used if the TCP model 762 * is enabled and helps distingush amongst the subset bound (non-boundall). 763 * The TCP model MAY change the actual ep field, this is why it is passed. 764 */ 765 struct sctp_tcb * 766 sctp_findassociation_ep_addr(struct sctp_inpcb **, 767 struct sockaddr *, struct sctp_nets **, struct sockaddr *, 768 struct sctp_tcb *); 769 770 struct sctp_tcb * 771 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock); 772 773 struct sctp_tcb * 774 sctp_findassociation_ep_asocid(struct sctp_inpcb *, 775 sctp_assoc_t, int); 776 777 struct sctp_tcb * 778 sctp_findassociation_ep_asconf(struct mbuf *, int, struct sockaddr *, 779 struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **, uint32_t vrf_id); 780 781 int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id); 782 783 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id); 784 785 void sctp_inpcb_free(struct sctp_inpcb *, int, int); 786 787 #define SCTP_DONT_INITIALIZE_AUTH_PARAMS 0 788 #define SCTP_INITIALIZE_AUTH_PARAMS 1 789 790 #if defined(__FreeBSD__) && !defined(__Userspace__) 791 struct sctp_tcb * 792 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, 793 int *, uint32_t, uint32_t, uint16_t, uint16_t, struct thread *, 794 int); 795 #elif defined(_WIN32) && !defined(__Userspace__) 796 struct sctp_tcb * 797 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, 798 int *, uint32_t, uint32_t, uint16_t, uint16_t, PKTHREAD, int); 799 #else 800 /* proc will be NULL for __Userspace__ */ 801 struct sctp_tcb * 802 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, 803 int *, uint32_t, uint32_t, uint16_t, uint16_t, struct proc *, 804 int); 805 #endif 806 807 int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int); 808 809 810 void sctp_delete_from_timewait(uint32_t, uint16_t, uint16_t); 811 812 int sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport); 813 814 void 815 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport); 816 817 void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t); 818 819 void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *); 820 821 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets **, uint16_t, int, int); 822 823 void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *); 824 825 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *); 826 827 #if defined(__Userspace__) 828 void sctp_pcb_init(int); 829 #else 830 void sctp_pcb_init(void); 831 #endif 832 833 void sctp_pcb_finish(void); 834 835 void sctp_add_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *); 836 void sctp_del_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *); 837 838 int 839 sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int, 840 struct sockaddr *, struct sockaddr *, struct sockaddr *, uint16_t); 841 842 int 843 sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *, 844 struct sctp_nets *); 845 846 int sctp_is_vtag_good(uint32_t, uint16_t lport, uint16_t rport, struct timeval *); 847 848 /* void sctp_drain(void); */ 849 850 int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *); 851 852 int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp); 853 854 void sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh); 855 856 /*- 857 * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg 858 * indicates run on ONLY assoc's of the specified endpoint. 859 */ 860 int 861 sctp_initiate_iterator(inp_func inpf, 862 asoc_func af, 863 inp_func inpe, 864 uint32_t, uint32_t, 865 uint32_t, void *, 866 uint32_t, 867 end_func ef, 868 struct sctp_inpcb *, 869 uint8_t co_off); 870 #if defined(__FreeBSD__) && !defined(__Userspace__) 871 #if defined(SCTP_MCORE_INPUT) && defined(SMP) 872 void 873 sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use); 874 875 #endif 876 #endif 877 878 #endif /* _KERNEL */ 879 #endif /* !__sctp_pcb_h__ */ 880