sys/netinet/sctp_pcb.h

   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 >=
  81                                  * ifa_count */
  82         uint32_t ifa_count;     /* IFA's we hold (in our list - ifalist) */
  83         uint32_t num_v6;        /* number of v6 addresses */
  84         uint32_t num_v4;        /* number of v4 addresses */
  85         uint32_t registered_af; /* registered address family for i/f events */
  86         char ifn_name[SCTP_IFNAMSIZ];
  87 };
  88
  89 /* SCTP local IFA flags */
  90 #define SCTP_ADDR_VALID         0x00000001      /* its up and active */
  91 #define SCTP_BEING_DELETED      0x00000002      /* being deleted, when
  92                                                  * refcount = 0. Note that it
  93                                                  * is pulled from the ifn list
  94                                                  * and ifa_p is nulled right
  95                                                  * away but it cannot be freed
  96                                                  * until the last *net
  97                                                  * pointing to it is deleted. */
  98 #define SCTP_ADDR_DEFER_USE     0x00000004      /* Hold off using this one */
  99 #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008
 100
 101 struct sctp_ifa {
 102         LIST_ENTRY(sctp_ifa) next_ifa;
 103         LIST_ENTRY(sctp_ifa) next_bucket;
 104         struct sctp_ifn *ifn_p; /* back pointer to parent ifn */
 105         void *ifa;              /* pointer to ifa, needed for flag update for
 106                                  * that we MUST lock appropriate locks. This
 107                                  * is for V6. */
 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 if no-zero
 123                                  * src-addr selection will not consider this
 124                                  * address. */
 125         struct timeval start_time;      /* time when this address was created */
 126 };
 127
 128 struct sctp_block_entry {
 129         int error;
 130 };
 131
 132 struct sctp_timewait {
 133         time_t tv_sec_at_expire;        /* the seconds from boot to expire */
 134         uint32_t v_tag;         /* the vtag that can not be reused */
 135         uint16_t lport;         /* the local port used in vtag */
 136         uint16_t rport;         /* the remote port used in vtag */
 137 };
 138
 139 struct sctp_tagblock {
 140         LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock;
 141         struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK];
 142 };
 143
 144 struct sctp_epinfo {
 145 #ifdef INET
 146         struct socket *udp4_tun_socket;
 147 #endif
 148 #ifdef INET6
 149         struct socket *udp6_tun_socket;
 150 #endif
 151         struct sctpasochead *sctp_asochash;
 152         u_long hashasocmark;
 153
 154         struct sctppcbhead *sctp_ephash;
 155         u_long hashmark;
 156
 157         /*-
 158          * The TCP model represents a substantial overhead in that we get an
 159          * additional hash table to keep explicit connections in. The
 160          * listening TCP endpoint will exist in the usual ephash above and
 161          * accept only INIT's. It will be incapable of sending off an INIT.
 162          * When a dg arrives we must look in the normal ephash. If we find a
 163          * TCP endpoint that will tell us to go to the specific endpoint
 164          * hash and re-hash to find the right assoc/socket. If we find a UDP
 165          * model socket we then must complete the lookup. If this fails,
 166          * i.e. no association can be found then we must continue to see if
 167          * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket
 168          * acts like a TCP model connected socket).
 169          */
 170         struct sctppcbhead *sctp_tcpephash;
 171         u_long hashtcpmark;
 172         uint32_t hashtblsize;
 173
 174         struct sctp_vrflist *sctp_vrfhash;
 175         u_long hashvrfmark;
 176
 177         struct sctp_ifnlist *vrf_ifn_hash;
 178         u_long vrf_ifn_hashmark;
 179
 180         struct sctppcbhead listhead;
 181         struct sctpladdr addr_wq;
 182
 183         /* ep zone info */
 184         sctp_zone_t ipi_zone_ep;
 185         sctp_zone_t ipi_zone_asoc;
 186         sctp_zone_t ipi_zone_laddr;
 187         sctp_zone_t ipi_zone_net;
 188         sctp_zone_t ipi_zone_chunk;
 189         sctp_zone_t ipi_zone_readq;
 190         sctp_zone_t ipi_zone_strmoq;
 191         sctp_zone_t ipi_zone_asconf;
 192         sctp_zone_t ipi_zone_asconf_ack;
 193
 194         struct rwlock ipi_ep_mtx;
 195         struct mtx ipi_iterator_wq_mtx;
 196         struct rwlock ipi_addr_mtx;
 197         struct mtx ipi_pktlog_mtx;
 198         struct mtx wq_addr_mtx;
 199         uint32_t ipi_count_ep;
 200
 201         /* assoc/tcb zone info */
 202         uint32_t ipi_count_asoc;
 203
 204         /* local addrlist zone info */
 205         uint32_t ipi_count_laddr;
 206
 207         /* remote addrlist zone info */
 208         uint32_t ipi_count_raddr;
 209
 210         /* chunk structure list for output */
 211         uint32_t ipi_count_chunk;
 212
 213         /* socket queue zone info */
 214         uint32_t ipi_count_readq;
 215
 216         /* socket queue zone info */
 217         uint32_t ipi_count_strmoq;
 218
 219         /* Number of vrfs */
 220         uint32_t ipi_count_vrfs;
 221
 222         /* Number of ifns */
 223         uint32_t ipi_count_ifns;
 224
 225         /* Number of ifas */
 226         uint32_t ipi_count_ifas;
 227
 228         /* system wide number of free chunks hanging around */
 229         uint32_t ipi_free_chunks;
 230         uint32_t ipi_free_strmoq;
 231
 232         struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE];
 233
 234         /* address work queue handling */
 235         struct sctp_timer addr_wq_timer;
 236
 237 };
 238
 239 struct sctp_base_info {
 240         /*
 241          * All static structures that anchor the system must be here.
 242          */
 243         struct sctp_epinfo sctppcbinfo;
 244 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
 245         struct sctpstat *sctpstat;
 246 #else
 247         struct sctpstat sctpstat;
 248 #endif
 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         eventhandler_tag eh_tag;
 258 };
 259
 260 /*-
 261  * Here we have all the relevant information for each SCTP entity created. We
 262  * will need to modify this as approprate. We also need to figure out how to
 263  * access /dev/random.
 264  */
 265 struct sctp_pcb {
 266         time_t time_of_secret_change;   /* number of seconds from
 267                                          * timeval.tv_sec */
 268         uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS];
 269         unsigned int size_of_a_cookie;
 270
 271         uint32_t sctp_timeoutticks[SCTP_NUM_TMRS];
 272         uint32_t sctp_minrto;
 273         uint32_t sctp_maxrto;
 274         uint32_t initial_rto;
 275         uint32_t initial_init_rto_max;
 276
 277         unsigned int sctp_sack_freq;
 278         uint32_t sctp_sws_sender;
 279         uint32_t sctp_sws_receiver;
 280
 281         uint32_t sctp_default_cc_module;
 282         uint32_t sctp_default_ss_module;
 283         /* authentication related fields */
 284         struct sctp_keyhead shared_keys;
 285         sctp_auth_chklist_t *local_auth_chunks;
 286         sctp_hmaclist_t *local_hmacs;
 287         uint16_t default_keyid;
 288         uint32_t default_mtu;
 289
 290         /* various thresholds */
 291         /* Max times I will init at a guy */
 292         uint16_t max_init_times;
 293
 294         /* Max times I will send before we consider someone dead */
 295         uint16_t max_send_times;
 296
 297         uint16_t def_net_failure;
 298
 299         uint16_t def_net_pf_threshold;
 300
 301         /* number of streams to pre-open on a association */
 302         uint16_t pre_open_stream_count;
 303         uint16_t max_open_streams_intome;
 304
 305         /* random number generator */
 306         uint32_t random_counter;
 307         uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE];
 308         uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE];
 309
 310         /*
 311          * This timer is kept running per endpoint.  When it fires it will
 312          * change the secret key.  The default is once a hour
 313          */
 314         struct sctp_timer signature_change;
 315
 316         uint32_t def_cookie_life;
 317         /* defaults to 0 */
 318         uint32_t auto_close_time;
 319         uint32_t initial_sequence_debug;
 320         uint32_t adaptation_layer_indicator;
 321         uint8_t adaptation_layer_indicator_provided;
 322         uint32_t store_at;
 323         uint32_t max_burst;
 324         uint32_t fr_max_burst;
 325 #ifdef INET6
 326         uint32_t default_flowlabel;
 327 #endif
 328         uint8_t default_dscp;
 329         char current_secret_number;
 330         char last_secret_number;
 331         uint16_t port;          /* remote UDP encapsulation port */
 332 };
 333
 334 #ifndef SCTP_ALIGNMENT
 335 #define SCTP_ALIGNMENT 32
 336 #endif
 337
 338 #ifndef SCTP_ALIGNM1
 339 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1)
 340 #endif
 341
 342 #define sctp_lport ip_inp.inp.inp_lport
 343
 344 struct sctp_pcbtsn_rlog {
 345         uint32_t vtag;
 346         uint16_t strm;
 347         uint16_t seq;
 348         uint16_t sz;
 349         uint16_t flgs;
 350 };
 351 #define SCTP_READ_LOG_SIZE 135  /* we choose the number to make a pcb a page */
 352
 353 struct sctp_inpcb {
 354         /*-
 355          * put an inpcb in front of it all, kind of a waste but we need to
 356          * for compatibility with all the other stuff.
 357          */
 358         union {
 359                 struct inpcb inp;
 360                 char align[(sizeof(struct inpcb) + SCTP_ALIGNM1) &
 361                     ~SCTP_ALIGNM1];
 362         }     ip_inp;
 363
 364         /* Socket buffer lock protects read_queue and of course sb_cc */
 365         struct sctp_readhead read_queue;
 366
 367                       LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */
 368         /* hash of all endpoints for model */
 369                       LIST_ENTRY(sctp_inpcb) sctp_hash;
 370         /* count of local addresses bound, 0 if bound all */
 371         int laddr_count;
 372
 373         /* list of addrs in use by the EP, NULL if bound-all */
 374         struct sctpladdr sctp_addr_list;
 375         /*
 376          * used for source address selection rotation when we are subset
 377          * bound
 378          */
 379         struct sctp_laddr *next_addr_touse;
 380
 381         /* back pointer to our socket */
 382         struct socket *sctp_socket;
 383         uint64_t sctp_features; /* Feature flags */
 384         uint32_t sctp_flags;    /* INP state flag set */
 385         uint32_t sctp_mobility_features;        /* Mobility  Feature flags */
 386         struct sctp_pcb sctp_ep;        /* SCTP ep data */
 387         /* head of the hash of all associations */
 388         struct sctpasochead *sctp_tcbhash;
 389         u_long sctp_hashmark;
 390         /* head of the list of all associations */
 391         struct sctpasochead sctp_asoc_list;
 392 #ifdef SCTP_TRACK_FREED_ASOCS
 393         struct sctpasochead sctp_asoc_free_list;
 394 #endif
 395         uint32_t sctp_frag_point;
 396         uint32_t partial_delivery_point;
 397         uint32_t sctp_context;
 398         uint32_t max_cwnd;
 399         uint8_t local_strreset_support;
 400         uint32_t sctp_cmt_on_off;
 401         uint8_t ecn_supported;
 402         uint8_t prsctp_supported;
 403         uint8_t auth_supported;
 404         uint8_t idata_supported;
 405         uint8_t asconf_supported;
 406         uint8_t reconfig_supported;
 407         uint8_t nrsack_supported;
 408         uint8_t pktdrop_supported;
 409         uint8_t rcv_edmid;
 410         struct sctp_nonpad_sndrcvinfo def_send;
 411         /*-
 412          * These three are here for the sosend_dgram
 413          * (pkt, pkt_last and control).
 414          * routine. However, I don't think anyone in
 415          * the current FreeBSD kernel calls this. So
 416          * they are candidates with sctp_sendm for
 417          * de-supporting.
 418          */
 419         struct mbuf *pkt, *pkt_last;
 420         struct mbuf *control;
 421         struct mtx inp_mtx;
 422         struct mtx inp_create_mtx;
 423         struct mtx inp_rdata_mtx;
 424         int32_t refcount;
 425         uint32_t def_vrf_id;
 426         uint16_t fibnum;
 427         uint32_t total_sends;
 428         uint32_t total_recvs;
 429         uint32_t last_abort_code;
 430         uint32_t total_nospaces;
 431         struct sctpasochead *sctp_asocidhash;
 432         u_long hashasocidmark;
 433         uint32_t sctp_associd_counter;
 434
 435 #ifdef SCTP_ASOCLOG_OF_TSNS
 436         struct sctp_pcbtsn_rlog readlog[SCTP_READ_LOG_SIZE];
 437         uint32_t readlog_index;
 438 #endif
 439 };
 440
 441 struct sctp_tcb {
 442         struct socket *sctp_socket;     /* back pointer to socket */
 443         struct sctp_inpcb *sctp_ep;     /* back pointer to ep */
 444                    LIST_ENTRY(sctp_tcb) sctp_tcbhash;   /* next link in hash
 445                                                          * table */
 446                    LIST_ENTRY(sctp_tcb) sctp_tcblist;   /* list of all of the
 447                                                          * TCB's */
 448                    LIST_ENTRY(sctp_tcb) sctp_tcbasocidhash;     /* next link in asocid
 449                                                                  * hash table */
 450                    LIST_ENTRY(sctp_tcb) sctp_asocs;     /* vtag hash list */
 451         struct sctp_block_entry *block_entry;   /* pointer locked by  socket
 452                                                  * send buffer */
 453         struct sctp_association asoc;
 454         /*-
 455          * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the
 456          * tcb_lock. Its special in this way to help avoid extra mutex calls
 457          * in the reading of data.
 458          */
 459         uint32_t freed_by_sorcv_sincelast;
 460         uint32_t total_sends;
 461         uint32_t total_recvs;
 462         int freed_from_where;
 463         uint16_t rport;         /* remote port in network format */
 464         uint16_t resv;
 465         struct mtx tcb_mtx;
 466 };
 467
 468 #include <netinet/sctp_lock_bsd.h>
 469
 470 #if defined(_KERNEL) || defined(__Userspace__)
 471
 472 /* Attention Julian, this is the extern that
 473  * goes with the base info. sctp_pcb.c has
 474  * the real definition.
 475  */
 476 VNET_DECLARE(struct sctp_base_info, system_base_info);
 477
 478 #ifdef INET6
 479 int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b);
 480 #endif
 481
 482 void sctp_fill_pcbinfo(struct sctp_pcbinfo *);
 483
 484 struct sctp_ifn *sctp_find_ifn(void *ifn, uint32_t ifn_index);
 485
 486 struct sctp_vrf *sctp_allocate_vrf(int vrfid);
 487 struct sctp_vrf *sctp_find_vrf(uint32_t vrfid);
 488 void sctp_free_vrf(struct sctp_vrf *vrf);
 489
 490 struct sctp_ifa *
 491 sctp_add_addr_to_vrf(uint32_t vrfid,
 492     void *ifn, uint32_t ifn_index, uint32_t ifn_type,
 493     const char *if_name,
 494     void *ifa, struct sockaddr *addr, uint32_t ifa_flags,
 495     int dynamic_add);
 496
 497 void sctp_free_ifa(struct sctp_ifa *sctp_ifap);
 498
 499 void
 500 sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr,
 501     void *ifn, uint32_t ifn_index);
 502
 503 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *);
 504
 505 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t);
 506
 507 int
 508 sctp_inpcb_bind(struct socket *, struct sockaddr *,
 509     struct sctp_ifa *, struct thread *);
 510 int
 511 sctp_inpcb_bind_locked(struct sctp_inpcb *, struct sockaddr *,
 512     struct sctp_ifa *, struct thread *);
 513
 514 struct sctp_tcb *
 515 sctp_findassociation_addr(struct mbuf *, int,
 516     struct sockaddr *, struct sockaddr *,
 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 *sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock);
 540
 541 struct sctp_tcb *
 542 sctp_findassociation_ep_asocid(struct sctp_inpcb *,
 543     sctp_assoc_t, int);
 544
 545 struct sctp_tcb *
 546 sctp_findassociation_ep_asconf(struct mbuf *, int, struct sockaddr *,
 547     struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **, uint32_t vrf_id);
 548
 549 int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id);
 550
 551 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id);
 552
 553 void sctp_inpcb_free(struct sctp_inpcb *, int, int);
 554
 555 #define SCTP_DONT_INITIALIZE_AUTH_PARAMS        0
 556 #define SCTP_INITIALIZE_AUTH_PARAMS             1
 557
 558 struct sctp_tcb *
 559 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
 560     int *, uint32_t, uint32_t, uint32_t, uint16_t, uint16_t,
 561     struct thread *, int);
 562 struct sctp_tcb *
 563 sctp_aloc_assoc_connected(struct sctp_inpcb *, struct sockaddr *,
 564     int *, uint32_t, uint32_t, uint32_t, uint16_t, uint16_t,
 565     struct thread *, int);
 566
 567 int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int);
 568
 569 void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t);
 570
 571 void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *);
 572
 573 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets **, uint16_t, int, int);
 574
 575 void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *);
 576
 577 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *);
 578
 579 void sctp_pcb_init(void);
 580
 581 void sctp_pcb_finish(void);
 582
 583 void sctp_add_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
 584 void sctp_del_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
 585
 586 int
 587 sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int,
 588     struct sockaddr *, struct sockaddr *, struct sockaddr *, uint16_t);
 589
 590 int
 591 sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *,
 592     struct sctp_nets *);
 593
 594 bool
 595      sctp_is_vtag_good(uint32_t, uint16_t lport, uint16_t rport, struct timeval *);
 596
 597 int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *);
 598
 599 int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp);
 600
 601 void sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh);
 602
 603 void
 604      sctp_pcb_add_flags(struct sctp_inpcb *, uint32_t);
 605
 606 /*-
 607  * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg
 608  * indicates run on ONLY assoc's of the specified endpoint.
 609  */
 610 int
 611 sctp_initiate_iterator(inp_func inpf,
 612     asoc_func af,
 613     inp_func inpe,
 614     uint32_t, uint32_t,
 615     uint32_t, void *,
 616     uint32_t,
 617     end_func ef,
 618     struct sctp_inpcb *,
 619     uint8_t co_off);
 620 #if defined(SCTP_MCORE_INPUT) && defined(SMP)
 621 void
 622      sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use);
 623
 624 #endif
 625
 626 #endif                          /* _KERNEL */
 627 #endif                          /* !__sctp_pcb_h__ */