The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netinet/sctp_pcb.h

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    1 /*-
    2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions are met:
    6  *
    7  * a) Redistributions of source code must retain the above copyright notice,
    8  *   this list of conditions and the following disclaimer.
    9  *
   10  * b) Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in
   12  *   the documentation and/or other materials provided with the distribution.
   13  *
   14  * c) Neither the name of Cisco Systems, Inc. nor the names of its
   15  *    contributors may be used to endorse or promote products derived
   16  *    from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   28  * THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /* $KAME: sctp_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $        */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/8.1/sys/netinet/sctp_pcb.h 209028 2010-06-11 03:13:19Z rrs $");
   35 
   36 #ifndef __sctp_pcb_h__
   37 #define __sctp_pcb_h__
   38 
   39 #include <netinet/sctp_os.h>
   40 #include <netinet/sctp.h>
   41 #include <netinet/sctp_constants.h>
   42 #include <netinet/sctp_sysctl.h>
   43 
   44 LIST_HEAD(sctppcbhead, sctp_inpcb);
   45 LIST_HEAD(sctpasochead, sctp_tcb);
   46 LIST_HEAD(sctpladdr, sctp_laddr);
   47 LIST_HEAD(sctpvtaghead, sctp_tagblock);
   48 LIST_HEAD(sctp_vrflist, sctp_vrf);
   49 LIST_HEAD(sctp_ifnlist, sctp_ifn);
   50 LIST_HEAD(sctp_ifalist, sctp_ifa);
   51 TAILQ_HEAD(sctp_readhead, sctp_queued_to_read);
   52 TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending);
   53 
   54 #include <netinet/sctp_structs.h>
   55 #include <netinet/sctp_auth.h>
   56 
   57 #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask)
   58 #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask)
   59 
   60 struct sctp_vrf {
   61         LIST_ENTRY(sctp_vrf) next_vrf;
   62         struct sctp_ifalist *vrf_addr_hash;
   63         struct sctp_ifnlist ifnlist;
   64         uint32_t vrf_id;
   65         uint32_t tbl_id_v4;     /* default v4 table id */
   66         uint32_t tbl_id_v6;     /* default v6 table id */
   67         uint32_t total_ifa_count;
   68         u_long vrf_addr_hashmark;
   69         uint32_t refcount;
   70 };
   71 
   72 struct sctp_ifn {
   73         struct sctp_ifalist ifalist;
   74         struct sctp_vrf *vrf;
   75                  LIST_ENTRY(sctp_ifn) next_ifn;
   76                  LIST_ENTRY(sctp_ifn) next_bucket;
   77         void *ifn_p;            /* never access without appropriate lock */
   78         uint32_t ifn_mtu;
   79         uint32_t ifn_type;
   80         uint32_t ifn_index;     /* shorthand way to look at ifn for reference */
   81         uint32_t refcount;      /* number of reference held should be >=
   82                                  * ifa_count */
   83         uint32_t ifa_count;     /* IFA's we hold (in our list - ifalist) */
   84         uint32_t num_v6;        /* number of v6 addresses */
   85         uint32_t num_v4;        /* number of v4 addresses */
   86         uint32_t registered_af; /* registered address family for i/f events */
   87         char ifn_name[SCTP_IFNAMSIZ];
   88 };
   89 
   90 /* SCTP local IFA flags */
   91 #define SCTP_ADDR_VALID         0x00000001      /* its up and active */
   92 #define SCTP_BEING_DELETED      0x00000002      /* being deleted, when
   93                                                  * refcount = 0. Note that it
   94                                                  * is pulled from the ifn list
   95                                                  * and ifa_p is nulled right
   96                                                  * away but it cannot be freed
   97                                                  * until the last *net
   98                                                  * pointing to it is deleted. */
   99 #define SCTP_ADDR_DEFER_USE     0x00000004      /* Hold off using this one */
  100 #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008
  101 
  102 struct sctp_ifa {
  103         LIST_ENTRY(sctp_ifa) next_ifa;
  104         LIST_ENTRY(sctp_ifa) next_bucket;
  105         struct sctp_ifn *ifn_p; /* back pointer to parent ifn */
  106         void *ifa;              /* pointer to ifa, needed for flag update for
  107                                  * that we MUST lock appropriate locks. This
  108                                  * is for V6. */
  109         union sctp_sockstore address;
  110         uint32_t refcount;      /* number of folks refering to this */
  111         uint32_t flags;
  112         uint32_t localifa_flags;
  113         uint32_t vrf_id;        /* vrf_id of this addr (for deleting) */
  114         uint8_t src_is_loop;
  115         uint8_t src_is_priv;
  116         uint8_t src_is_glob;
  117         uint8_t resv;
  118 };
  119 
  120 struct sctp_laddr {
  121         LIST_ENTRY(sctp_laddr) sctp_nxt_addr;   /* next in list */
  122         struct sctp_ifa *ifa;
  123         uint32_t action;        /* Used during asconf and adding if no-zero
  124                                  * src-addr selection will not consider this
  125                                  * address. */
  126         struct timeval start_time;      /* time when this address was created */
  127 };
  128 
  129 struct sctp_block_entry {
  130         int error;
  131 };
  132 
  133 struct sctp_timewait {
  134         uint32_t tv_sec_at_expire;      /* the seconds from boot to expire */
  135         uint32_t v_tag;         /* the vtag that can not be reused */
  136         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 
  146 struct sctp_epinfo {
  147         struct socket *udp_tun_socket;
  148         struct sctpasochead *sctp_asochash;
  149         u_long hashasocmark;
  150 
  151         struct sctppcbhead *sctp_ephash;
  152         u_long hashmark;
  153 
  154         /*-
  155          * The TCP model represents a substantial overhead in that we get an
  156          * additional hash table to keep explicit connections in. The
  157          * listening TCP endpoint will exist in the usual ephash above and
  158          * accept only INIT's. It will be incapable of sending off an INIT.
  159          * When a dg arrives we must look in the normal ephash. If we find a
  160          * TCP endpoint that will tell us to go to the specific endpoint
  161          * hash and re-hash to find the right assoc/socket. If we find a UDP
  162          * model socket we then must complete the lookup. If this fails,
  163          * i.e. no association can be found then we must continue to see if
  164          * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket
  165          * acts like a TCP model connected socket).
  166          */
  167         struct sctppcbhead *sctp_tcpephash;
  168         u_long hashtcpmark;
  169         uint32_t hashtblsize;
  170 
  171         struct sctp_vrflist *sctp_vrfhash;
  172         u_long hashvrfmark;
  173 
  174         struct sctp_ifnlist *vrf_ifn_hash;
  175         u_long vrf_ifn_hashmark;
  176 
  177         struct sctppcbhead listhead;
  178         struct sctpladdr addr_wq;
  179 
  180         /* ep zone info */
  181         sctp_zone_t ipi_zone_ep;
  182         sctp_zone_t ipi_zone_asoc;
  183         sctp_zone_t ipi_zone_laddr;
  184         sctp_zone_t ipi_zone_net;
  185         sctp_zone_t ipi_zone_chunk;
  186         sctp_zone_t ipi_zone_readq;
  187         sctp_zone_t ipi_zone_strmoq;
  188         sctp_zone_t ipi_zone_asconf;
  189         sctp_zone_t ipi_zone_asconf_ack;
  190 
  191         struct rwlock ipi_ep_mtx;
  192         struct mtx ipi_iterator_wq_mtx;
  193         struct rwlock ipi_addr_mtx;
  194         struct mtx ipi_pktlog_mtx;
  195         struct mtx wq_addr_mtx;
  196         uint32_t ipi_count_ep;
  197 
  198         /* assoc/tcb zone info */
  199         uint32_t ipi_count_asoc;
  200 
  201         /* local addrlist zone info */
  202         uint32_t ipi_count_laddr;
  203 
  204         /* remote addrlist zone info */
  205         uint32_t ipi_count_raddr;
  206 
  207         /* chunk structure list for output */
  208         uint32_t ipi_count_chunk;
  209 
  210         /* socket queue zone info */
  211         uint32_t ipi_count_readq;
  212 
  213         /* socket queue zone info */
  214         uint32_t ipi_count_strmoq;
  215 
  216         /* Number of vrfs */
  217         uint32_t ipi_count_vrfs;
  218 
  219         /* Number of ifns */
  220         uint32_t ipi_count_ifns;
  221 
  222         /* Number of ifas */
  223         uint32_t ipi_count_ifas;
  224 
  225         /* system wide number of free chunks hanging around */
  226         uint32_t ipi_free_chunks;
  227         uint32_t ipi_free_strmoq;
  228 
  229         struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE];
  230 
  231         /* address work queue handling */
  232         struct sctp_timer addr_wq_timer;
  233 
  234 };
  235 
  236 
  237 struct sctp_base_info {
  238         /*
  239          * All static structures that anchor the system must be here.
  240          */
  241         struct sctp_epinfo sctppcbinfo;
  242 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
  243         struct sctpstat sctpstat[MAXCPU];
  244 #else
  245         struct sctpstat sctpstat;
  246 #endif
  247         struct sctp_sysctl sctpsysctl;
  248         uint8_t first_time;
  249         char sctp_pcb_initialized;
  250 #if defined(SCTP_PACKET_LOGGING)
  251         int packet_log_writers;
  252         int packet_log_end;
  253         uint8_t packet_log_buffer[SCTP_PACKET_LOG_SIZE];
  254 #endif
  255 };
  256 
  257 /*-
  258  * Here we have all the relevant information for each SCTP entity created. We
  259  * will need to modify this as approprate. We also need to figure out how to
  260  * access /dev/random.
  261  */
  262 struct sctp_pcb {
  263         unsigned int time_of_secret_change;     /* number of seconds from
  264                                                  * timeval.tv_sec */
  265         uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS];
  266         unsigned int size_of_a_cookie;
  267 
  268         unsigned int sctp_timeoutticks[SCTP_NUM_TMRS];
  269         unsigned int sctp_minrto;
  270         unsigned int sctp_maxrto;
  271         unsigned int initial_rto;
  272         int initial_init_rto_max;
  273 
  274         unsigned int sctp_sack_freq;
  275         uint32_t sctp_sws_sender;
  276         uint32_t sctp_sws_receiver;
  277 
  278         uint32_t sctp_default_cc_module;
  279         /* authentication related fields */
  280         struct sctp_keyhead shared_keys;
  281         sctp_auth_chklist_t *local_auth_chunks;
  282         sctp_hmaclist_t *local_hmacs;
  283         uint16_t default_keyid;
  284 
  285         /* various thresholds */
  286         /* Max times I will init at a guy */
  287         uint16_t max_init_times;
  288 
  289         /* Max times I will send before we consider someone dead */
  290         uint16_t max_send_times;
  291 
  292         uint16_t def_net_failure;
  293 
  294         /* number of streams to pre-open on a association */
  295         uint16_t pre_open_stream_count;
  296         uint16_t max_open_streams_intome;
  297 
  298         /* random number generator */
  299         uint32_t random_counter;
  300         uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE];
  301         uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE];
  302 
  303         /*
  304          * This timer is kept running per endpoint.  When it fires it will
  305          * change the secret key.  The default is once a hour
  306          */
  307         struct sctp_timer signature_change;
  308 
  309         /* Zero copy full buffer timer */
  310         struct sctp_timer zero_copy_timer;
  311         /* Zero copy app to transport (sendq) read repulse timer */
  312         struct sctp_timer zero_copy_sendq_timer;
  313         uint32_t def_cookie_life;
  314         /* defaults to 0 */
  315         int auto_close_time;
  316         uint32_t initial_sequence_debug;
  317         uint32_t adaptation_layer_indicator;
  318         uint32_t store_at;
  319         uint8_t max_burst;
  320         char current_secret_number;
  321         char last_secret_number;
  322 };
  323 
  324 #ifndef SCTP_ALIGNMENT
  325 #define SCTP_ALIGNMENT 32
  326 #endif
  327 
  328 #ifndef SCTP_ALIGNM1
  329 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1)
  330 #endif
  331 
  332 #define sctp_lport ip_inp.inp.inp_lport
  333 
  334 struct sctp_pcbtsn_rlog {
  335         uint32_t vtag;
  336         uint16_t strm;
  337         uint16_t seq;
  338         uint16_t sz;
  339         uint16_t flgs;
  340 };
  341 
  342 #define SCTP_READ_LOG_SIZE 135  /* we choose the number to make a pcb a page */
  343 
  344 
  345 struct sctp_inpcb {
  346         /*-
  347          * put an inpcb in front of it all, kind of a waste but we need to
  348          * for compatability with all the other stuff.
  349          */
  350         union {
  351                 struct inpcb inp;
  352                 char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) &
  353                         ~SCTP_ALIGNM1];
  354         }     ip_inp;
  355 
  356 
  357         /* Socket buffer lock protects read_queue and of course sb_cc */
  358         struct sctp_readhead read_queue;
  359 
  360                       LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */
  361         /* hash of all endpoints for model */
  362                       LIST_ENTRY(sctp_inpcb) sctp_hash;
  363         /* count of local addresses bound, 0 if bound all */
  364         int laddr_count;
  365 
  366         /* list of addrs in use by the EP, NULL if bound-all */
  367         struct sctpladdr sctp_addr_list;
  368         /*
  369          * used for source address selection rotation when we are subset
  370          * bound
  371          */
  372         struct sctp_laddr *next_addr_touse;
  373 
  374         /* back pointer to our socket */
  375         struct socket *sctp_socket;
  376         uint32_t sctp_flags;    /* INP state flag set */
  377         uint32_t sctp_features; /* Feature flags */
  378         uint32_t sctp_mobility_features;        /* Mobility  Feature flags */
  379         struct sctp_pcb sctp_ep;/* SCTP ep data */
  380         /* head of the hash of all associations */
  381         struct sctpasochead *sctp_tcbhash;
  382         u_long sctp_hashmark;
  383         /* head of the list of all associations */
  384         struct sctpasochead sctp_asoc_list;
  385 #ifdef SCTP_TRACK_FREED_ASOCS
  386         struct sctpasochead sctp_asoc_free_list;
  387 #endif
  388         struct sctp_iterator *inp_starting_point_for_iterator;
  389         uint32_t sctp_frag_point;
  390         uint32_t partial_delivery_point;
  391         uint32_t sctp_context;
  392         struct sctp_nonpad_sndrcvinfo def_send;
  393         /*-
  394          * These three are here for the sosend_dgram
  395          * (pkt, pkt_last and control).
  396          * routine. However, I don't think anyone in
  397          * the current FreeBSD kernel calls this. So
  398          * they are candidates with sctp_sendm for
  399          * de-supporting.
  400          */
  401         struct mbuf *pkt, *pkt_last;
  402         struct mbuf *control;
  403         struct mtx inp_mtx;
  404         struct mtx inp_create_mtx;
  405         struct mtx inp_rdata_mtx;
  406         int32_t refcount;
  407         uint32_t def_vrf_id;
  408         uint32_t total_sends;
  409         uint32_t total_recvs;
  410         uint32_t last_abort_code;
  411         uint32_t total_nospaces;
  412         struct sctpasochead *sctp_asocidhash;
  413         u_long hashasocidmark;
  414         uint32_t sctp_associd_counter;
  415 
  416 #ifdef SCTP_ASOCLOG_OF_TSNS
  417         struct sctp_pcbtsn_rlog readlog[SCTP_READ_LOG_SIZE];
  418         uint32_t readlog_index;
  419 #endif
  420 };
  421 
  422 struct sctp_tcb {
  423         struct socket *sctp_socket;     /* back pointer to socket */
  424         struct sctp_inpcb *sctp_ep;     /* back pointer to ep */
  425                    LIST_ENTRY(sctp_tcb) sctp_tcbhash;   /* next link in hash
  426                                                          * table */
  427                    LIST_ENTRY(sctp_tcb) sctp_tcblist;   /* list of all of the
  428                                                          * TCB's */
  429                    LIST_ENTRY(sctp_tcb) sctp_tcbasocidhash;     /* next link in asocid
  430                                                                  * hash table */
  431                    LIST_ENTRY(sctp_tcb) sctp_asocs;     /* vtag hash list */
  432         struct sctp_block_entry *block_entry;   /* pointer locked by  socket
  433                                                  * send buffer */
  434         struct sctp_association asoc;
  435         /*-
  436          * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the
  437          * tcb_lock. Its special in this way to help avoid extra mutex calls
  438          * in the reading of data.
  439          */
  440         uint32_t freed_by_sorcv_sincelast;
  441         uint32_t total_sends;
  442         uint32_t total_recvs;
  443         int freed_from_where;
  444         uint16_t rport;         /* remote port in network format */
  445         uint16_t resv;
  446         struct mtx tcb_mtx;
  447         struct mtx tcb_send_mtx;
  448 };
  449 
  450 
  451 
  452 #include <netinet/sctp_lock_bsd.h>
  453 
  454 
  455 /* TODO where to put non-_KERNEL things for __Userspace__? */
  456 #if defined(_KERNEL) || defined(__Userspace__)
  457 
  458 /* Attention Julian, this is the extern that
  459  * goes with the base info. sctp_pcb.c has
  460  * the real definition.
  461  */
  462 VNET_DECLARE(struct sctp_base_info, system_base_info);
  463 
  464 #ifdef INET6
  465 int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b);
  466 
  467 #endif
  468 
  469 void sctp_fill_pcbinfo(struct sctp_pcbinfo *);
  470 
  471 struct sctp_ifn *
  472          sctp_find_ifn(void *ifn, uint32_t ifn_index);
  473 
  474 struct sctp_vrf *sctp_allocate_vrf(int vrfid);
  475 struct sctp_vrf *sctp_find_vrf(uint32_t vrfid);
  476 void sctp_free_vrf(struct sctp_vrf *vrf);
  477 
  478 /*-
  479  * Change address state, can be used if
  480  * O/S supports telling transports about
  481  * changes to IFA/IFN's (link layer triggers).
  482  * If a ifn goes down, we will do src-addr-selection
  483  * and NOT use that, as a source address. This does
  484  * not stop the routing system from routing out
  485  * that interface, but we won't put it as a source.
  486  */
  487 void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index);
  488 void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index);
  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_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu);
  498 
  499 void sctp_free_ifn(struct sctp_ifn *sctp_ifnp);
  500 void sctp_free_ifa(struct sctp_ifa *sctp_ifap);
  501 
  502 
  503 void 
  504 sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr,
  505     uint32_t ifn_index, const char *if_name);
  506 
  507 
  508 
  509 struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *);
  510 
  511 struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t);
  512 
  513 int 
  514 sctp_inpcb_bind(struct socket *, struct sockaddr *,
  515     struct sctp_ifa *, struct thread *);
  516 
  517 struct sctp_tcb *
  518 sctp_findassociation_addr(struct mbuf *, int, int,
  519     struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **,
  520     struct sctp_nets **, uint32_t vrf_id);
  521 
  522 struct sctp_tcb *
  523 sctp_findassociation_addr_sa(struct sockaddr *,
  524     struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t);
  525 
  526 void
  527 sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *,
  528     struct sctp_tcb *);
  529 
  530 /*-
  531  * For this call ep_addr, the to is the destination endpoint address of the
  532  * peer (relative to outbound). The from field is only used if the TCP model
  533  * is enabled and helps distingush amongst the subset bound (non-boundall).
  534  * The TCP model MAY change the actual ep field, this is why it is passed.
  535  */
  536 struct sctp_tcb *
  537 sctp_findassociation_ep_addr(struct sctp_inpcb **,
  538     struct sockaddr *, struct sctp_nets **, struct sockaddr *,
  539     struct sctp_tcb *);
  540 
  541 struct sctp_tcb *
  542          sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock);
  543 
  544 struct sctp_tcb *
  545 sctp_findassociation_ep_asocid(struct sctp_inpcb *,
  546     sctp_assoc_t, int);
  547 
  548 struct sctp_tcb *
  549 sctp_findassociation_ep_asconf(struct mbuf *, int, int,
  550     struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **, uint32_t vrf_id);
  551 
  552 int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id);
  553 
  554 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id);
  555 
  556 void sctp_inpcb_free(struct sctp_inpcb *, int, int);
  557 
  558 struct sctp_tcb *
  559 sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
  560     int *, uint32_t, uint32_t, struct thread *);
  561 
  562 int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int);
  563 
  564 
  565 void sctp_delete_from_timewait(uint32_t, uint16_t, uint16_t);
  566 
  567 int sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport);
  568 
  569 void
  570      sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport);
  571 
  572 void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t);
  573 
  574 int sctp_insert_laddr(struct sctpladdr *, struct sctp_ifa *, uint32_t);
  575 
  576 void sctp_remove_laddr(struct sctp_laddr *);
  577 
  578 void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *);
  579 
  580 int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int);
  581 
  582 void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *);
  583 
  584 int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *);
  585 
  586 void sctp_pcb_init(void);
  587 
  588 void sctp_pcb_finish(void);
  589 
  590 void sctp_add_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
  591 void sctp_del_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
  592 
  593 int
  594 sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int,
  595     int, struct sctphdr *, struct sockaddr *);
  596 
  597 int
  598 sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *,
  599     struct sctp_nets *);
  600 
  601 int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, uint16_t lport, uint16_t rport, struct timeval *, int);
  602 
  603 /* void sctp_drain(void); */
  604 
  605 int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *);
  606 
  607 int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp);
  608 
  609 /*-
  610  * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg
  611  * indicates run on ONLY assoc's of the specified endpoint.
  612  */
  613 int
  614 sctp_initiate_iterator(inp_func inpf,
  615     asoc_func af,
  616     inp_func inpe,
  617     uint32_t, uint32_t,
  618     uint32_t, void *,
  619     uint32_t,
  620     end_func ef,
  621     struct sctp_inpcb *,
  622     uint8_t co_off);
  623 
  624 #ifdef INVARIANTS
  625 void
  626      sctp_validate_no_locks(struct sctp_inpcb *inp);
  627 
  628 #endif
  629 
  630 #endif                          /* _KERNEL */
  631 #endif                          /* !__sctp_pcb_h__ */

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