ldpd/ldpd.h

   1 /*      $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org>
   5  * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
   6  * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
   7  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
   8  *
   9  * Permission to use, copy, modify, and distribute this software for any
  10  * purpose with or without fee is hereby granted, provided that the above
  11  * copyright notice and this permission notice appear in all copies.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  14  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  15  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  16  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  17  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20  */
  21
  22 #ifndef _LDPD_H_
  23 #define _LDPD_H_
  24
  25 #include "openbsd-queue.h"
  26 #include "openbsd-tree.h"
  27 #include "imsg.h"
  28 #include "thread.h"
  29 #include "qobj.h"
  30 #include "prefix.h"
  31 #include "filter.h"
  32 #include "pw.h"
  33
  34 #include "ldp.h"
  35
  36 #define CONF_FILE               "/etc/ldpd.conf"
  37 #define LDPD_USER               "_ldpd"
  38
  39 #define LDPD_FD_ASYNC           3
  40 #define LDPD_FD_SYNC            4
  41
  42 #define LDPD_OPT_VERBOSE        0x00000001
  43 #define LDPD_OPT_VERBOSE2       0x00000002
  44 #define LDPD_OPT_NOACTION       0x00000004
  45
  46 #define TCP_MD5_KEY_LEN         80
  47 #define L2VPN_NAME_LEN          32
  48
  49 #define RT_BUF_SIZE             16384
  50 #define MAX_RTSOCK_BUF          128 * 1024
  51 #define LDP_BACKLOG             128
  52
  53 #define F_LDPD_INSERTED         0x0001
  54 #define F_CONNECTED             0x0002
  55 #define F_STATIC                0x0004
  56 #define F_DYNAMIC               0x0008
  57 #define F_REJECT                0x0010
  58 #define F_BLACKHOLE             0x0020
  59 #define F_REDISTRIBUTED         0x0040
  60
  61 struct evbuf {
  62         struct msgbuf            wbuf;
  63         struct thread           *ev;
  64         int                      (*handler)(struct thread *);
  65         void                    *arg;
  66 };
  67
  68 struct imsgev {
  69         struct imsgbuf           ibuf;
  70         int                     (*handler_write)(struct thread *);
  71         struct thread           *ev_write;
  72         int                     (*handler_read)(struct thread *);
  73         struct thread           *ev_read;
  74 };
  75
  76 enum imsg_type {
  77         IMSG_NONE,
  78         IMSG_CTL_RELOAD,
  79         IMSG_CTL_SHOW_INTERFACE,
  80         IMSG_CTL_SHOW_DISCOVERY,
  81         IMSG_CTL_SHOW_DISCOVERY_DTL,
  82         IMSG_CTL_SHOW_DISC_IFACE,
  83         IMSG_CTL_SHOW_DISC_TNBR,
  84         IMSG_CTL_SHOW_DISC_ADJ,
  85         IMSG_CTL_SHOW_NBR,
  86         IMSG_CTL_SHOW_NBR_DISC,
  87         IMSG_CTL_SHOW_NBR_END,
  88         IMSG_CTL_SHOW_LIB,
  89         IMSG_CTL_SHOW_LIB_BEGIN,
  90         IMSG_CTL_SHOW_LIB_SENT,
  91         IMSG_CTL_SHOW_LIB_RCVD,
  92         IMSG_CTL_SHOW_LIB_END,
  93         IMSG_CTL_SHOW_L2VPN_PW,
  94         IMSG_CTL_SHOW_L2VPN_BINDING,
  95         IMSG_CTL_CLEAR_NBR,
  96         IMSG_CTL_FIB_COUPLE,
  97         IMSG_CTL_FIB_DECOUPLE,
  98         IMSG_CTL_KROUTE,
  99         IMSG_CTL_KROUTE_ADDR,
 100         IMSG_CTL_IFINFO,
 101         IMSG_CTL_END,
 102         IMSG_CTL_LOG_VERBOSE,
 103         IMSG_KLABEL_CHANGE,
 104         IMSG_KLABEL_DELETE,
 105         IMSG_KPWLABEL_CHANGE,
 106         IMSG_KPWLABEL_DELETE,
 107         IMSG_IFSTATUS,
 108         IMSG_NEWADDR,
 109         IMSG_DELADDR,
 110         IMSG_RTRID_UPDATE,
 111         IMSG_LABEL_MAPPING,
 112         IMSG_LABEL_MAPPING_FULL,
 113         IMSG_LABEL_REQUEST,
 114         IMSG_LABEL_RELEASE,
 115         IMSG_LABEL_WITHDRAW,
 116         IMSG_LABEL_ABORT,
 117         IMSG_REQUEST_ADD,
 118         IMSG_REQUEST_ADD_END,
 119         IMSG_MAPPING_ADD,
 120         IMSG_MAPPING_ADD_END,
 121         IMSG_RELEASE_ADD,
 122         IMSG_RELEASE_ADD_END,
 123         IMSG_WITHDRAW_ADD,
 124         IMSG_WITHDRAW_ADD_END,
 125         IMSG_ADDRESS_ADD,
 126         IMSG_ADDRESS_DEL,
 127         IMSG_NOTIFICATION,
 128         IMSG_NOTIFICATION_SEND,
 129         IMSG_NEIGHBOR_UP,
 130         IMSG_NEIGHBOR_DOWN,
 131         IMSG_NETWORK_ADD,
 132         IMSG_NETWORK_UPDATE,
 133         IMSG_SOCKET_IPC,
 134         IMSG_SOCKET_NET,
 135         IMSG_CLOSE_SOCKETS,
 136         IMSG_REQUEST_SOCKETS,
 137         IMSG_SETUP_SOCKETS,
 138         IMSG_RECONF_CONF,
 139         IMSG_RECONF_IFACE,
 140         IMSG_RECONF_TNBR,
 141         IMSG_RECONF_NBRP,
 142         IMSG_RECONF_L2VPN,
 143         IMSG_RECONF_L2VPN_IF,
 144         IMSG_RECONF_L2VPN_PW,
 145         IMSG_RECONF_L2VPN_IPW,
 146         IMSG_RECONF_END,
 147         IMSG_DEBUG_UPDATE,
 148         IMSG_LOG,
 149         IMSG_ACL_CHECK,
 150         IMSG_GET_LABEL_CHUNK,
 151         IMSG_RELEASE_LABEL_CHUNK,
 152         IMSG_INIT
 153 };
 154
 155 struct ldpd_init {
 156         char             user[256];
 157         char             group[256];
 158         char             ctl_sock_path[MAXPATHLEN];
 159         char             zclient_serv_path[MAXPATHLEN];
 160         u_short          instance;
 161 };
 162
 163 union ldpd_addr {
 164         struct in_addr  v4;
 165         struct in6_addr v6;
 166 };
 167
 168 #define IN6_IS_SCOPE_EMBED(a)   \
 169         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 170          (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
 171          (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
 172
 173 /* interface states */
 174 #define IF_STA_DOWN             0x01
 175 #define IF_STA_ACTIVE           0x02
 176
 177 /* targeted neighbor states */
 178 #define TNBR_STA_DOWN           0x01
 179 #define TNBR_STA_ACTIVE         0x02
 180
 181 /* interface types */
 182 enum iface_type {
 183         IF_TYPE_POINTOPOINT,
 184         IF_TYPE_BROADCAST
 185 };
 186
 187 /* neighbor states */
 188 #define NBR_STA_PRESENT         0x0001
 189 #define NBR_STA_INITIAL         0x0002
 190 #define NBR_STA_OPENREC         0x0004
 191 #define NBR_STA_OPENSENT        0x0008
 192 #define NBR_STA_OPER            0x0010
 193 #define NBR_STA_SESSION         (NBR_STA_INITIAL | NBR_STA_OPENREC | \
 194                                 NBR_STA_OPENSENT | NBR_STA_OPER)
 195
 196 /* neighbor events */
 197 enum nbr_event {
 198         NBR_EVT_NOTHING,
 199         NBR_EVT_MATCH_ADJ,
 200         NBR_EVT_CONNECT_UP,
 201         NBR_EVT_CLOSE_SESSION,
 202         NBR_EVT_INIT_RCVD,
 203         NBR_EVT_KEEPALIVE_RCVD,
 204         NBR_EVT_PDU_RCVD,
 205         NBR_EVT_PDU_SENT,
 206         NBR_EVT_INIT_SENT
 207 };
 208
 209 /* neighbor actions */
 210 enum nbr_action {
 211         NBR_ACT_NOTHING,
 212         NBR_ACT_RST_KTIMEOUT,
 213         NBR_ACT_SESSION_EST,
 214         NBR_ACT_RST_KTIMER,
 215         NBR_ACT_CONNECT_SETUP,
 216         NBR_ACT_PASSIVE_INIT,
 217         NBR_ACT_KEEPALIVE_SEND,
 218         NBR_ACT_CLOSE_SESSION
 219 };
 220
 221 /* forward declarations */
 222 RB_HEAD(global_adj_head, adj);
 223 RB_HEAD(nbr_adj_head, adj);
 224 RB_HEAD(ia_adj_head, adj);
 225
 226 struct map {
 227         uint8_t         type;
 228         uint32_t        msg_id;
 229         union {
 230                 struct {
 231                         uint16_t        af;
 232                         union ldpd_addr prefix;
 233                         uint8_t         prefixlen;
 234                 } prefix;
 235                 struct {
 236                         uint16_t        type;
 237                         uint32_t        pwid;
 238                         uint32_t        group_id;
 239                         uint16_t        ifmtu;
 240                 } pwid;
 241                 struct {
 242                         uint8_t         type;
 243                         union {
 244                                 uint16_t        prefix_af;
 245                                 uint16_t        pw_type;
 246                         } u;
 247                 } twcard;
 248         } fec;
 249         struct {
 250                 uint32_t        status_code;
 251                 uint32_t        msg_id;
 252                 uint16_t        msg_type;
 253         } st;
 254         uint32_t        label;
 255         uint32_t        requestid;
 256         uint32_t        pw_status;
 257         uint8_t         flags;
 258 };
 259 #define F_MAP_REQ_ID    0x01    /* optional request message id present */
 260 #define F_MAP_STATUS    0x02    /* status */
 261 #define F_MAP_PW_CWORD  0x04    /* pseudowire control word */
 262 #define F_MAP_PW_ID     0x08    /* pseudowire connection id */
 263 #define F_MAP_PW_IFMTU  0x10    /* pseudowire interface parameter */
 264 #define F_MAP_PW_STATUS 0x20    /* pseudowire status */
 265
 266 struct notify_msg {
 267         uint32_t        status_code;
 268         uint32_t        msg_id;         /* network byte order */
 269         uint16_t        msg_type;       /* network byte order */
 270         uint32_t        pw_status;
 271         struct map      fec;
 272         struct {
 273                 uint16_t         type;
 274                 uint16_t         length;
 275                 char            *data;
 276         } rtlvs;
 277         uint8_t         flags;
 278 };
 279 #define F_NOTIF_PW_STATUS       0x01    /* pseudowire status tlv present */
 280 #define F_NOTIF_FEC             0x02    /* fec tlv present */
 281 #define F_NOTIF_RETURNED_TLVS   0x04    /* returned tlvs present */
 282
 283 struct if_addr {
 284         LIST_ENTRY(if_addr)      entry;
 285         int                      af;
 286         union ldpd_addr          addr;
 287         uint8_t                  prefixlen;
 288         union ldpd_addr          dstbrd;
 289 };
 290 LIST_HEAD(if_addr_head, if_addr);
 291
 292 struct iface_af {
 293         struct iface            *iface;
 294         int                      af;
 295         int                      enabled;
 296         int                      state;
 297         struct ia_adj_head       adj_tree;
 298         time_t                   uptime;
 299         struct thread           *hello_timer;
 300         uint16_t                 hello_holdtime;
 301         uint16_t                 hello_interval;
 302 };
 303
 304 struct iface {
 305         RB_ENTRY(iface)          entry;
 306         char                     name[IF_NAMESIZE];
 307         unsigned int             ifindex;
 308         struct if_addr_head      addr_list;
 309         struct in6_addr          linklocal;
 310         enum iface_type          type;
 311         int                      operative;
 312         struct iface_af          ipv4;
 313         struct iface_af          ipv6;
 314         QOBJ_FIELDS
 315 };
 316 RB_HEAD(iface_head, iface);
 317 RB_PROTOTYPE(iface_head, iface, entry, iface_compare);
 318 DECLARE_QOBJ_TYPE(iface)
 319
 320 /* source of targeted hellos */
 321 struct tnbr {
 322         RB_ENTRY(tnbr)           entry;
 323         struct thread           *hello_timer;
 324         struct adj              *adj;
 325         int                      af;
 326         union ldpd_addr          addr;
 327         int                      state;
 328         uint16_t                 pw_count;
 329         uint8_t                  flags;
 330         QOBJ_FIELDS
 331 };
 332 RB_HEAD(tnbr_head, tnbr);
 333 RB_PROTOTYPE(tnbr_head, tnbr, entry, tnbr_compare);
 334 DECLARE_QOBJ_TYPE(tnbr)
 335 #define F_TNBR_CONFIGURED        0x01
 336 #define F_TNBR_DYNAMIC           0x02
 337
 338 enum auth_method {
 339         AUTH_NONE,
 340         AUTH_MD5SIG
 341 };
 342
 343 /* neighbor specific parameters */
 344 struct nbr_params {
 345         RB_ENTRY(nbr_params)     entry;
 346         struct in_addr           lsr_id;
 347         uint16_t                 keepalive;
 348         int                      gtsm_enabled;
 349         uint8_t                  gtsm_hops;
 350         struct {
 351                 enum auth_method         method;
 352                 char                     md5key[TCP_MD5_KEY_LEN];
 353                 uint8_t                  md5key_len;
 354         } auth;
 355         uint8_t                  flags;
 356         QOBJ_FIELDS
 357 };
 358 RB_HEAD(nbrp_head, nbr_params);
 359 RB_PROTOTYPE(nbrp_head, nbr_params, entry, nbr_params_compare);
 360 DECLARE_QOBJ_TYPE(nbr_params)
 361 #define F_NBRP_KEEPALIVE         0x01
 362 #define F_NBRP_GTSM              0x02
 363 #define F_NBRP_GTSM_HOPS         0x04
 364
 365 struct ldp_stats {
 366         uint32_t                 kalive_sent;
 367         uint32_t                 kalive_rcvd;
 368         uint32_t                 addr_sent;
 369         uint32_t                 addr_rcvd;
 370         uint32_t                 addrwdraw_sent;
 371         uint32_t                 addrwdraw_rcvd;
 372         uint32_t                 notif_sent;
 373         uint32_t                 notif_rcvd;
 374         uint32_t                 capability_sent;
 375         uint32_t                 capability_rcvd;
 376         uint32_t                 labelmap_sent;
 377         uint32_t                 labelmap_rcvd;
 378         uint32_t                 labelreq_sent;
 379         uint32_t                 labelreq_rcvd;
 380         uint32_t                 labelwdraw_sent;
 381         uint32_t                 labelwdraw_rcvd;
 382         uint32_t                 labelrel_sent;
 383         uint32_t                 labelrel_rcvd;
 384         uint32_t                 labelabreq_sent;
 385         uint32_t                 labelabreq_rcvd;
 386 };
 387
 388 struct l2vpn_if {
 389         RB_ENTRY(l2vpn_if)       entry;
 390         struct l2vpn            *l2vpn;
 391         char                     ifname[IF_NAMESIZE];
 392         unsigned int             ifindex;
 393         int                      operative;
 394         uint8_t                  mac[ETHER_ADDR_LEN];
 395         QOBJ_FIELDS
 396 };
 397 RB_HEAD(l2vpn_if_head, l2vpn_if);
 398 RB_PROTOTYPE(l2vpn_if_head, l2vpn_if, entry, l2vpn_if_compare);
 399 DECLARE_QOBJ_TYPE(l2vpn_if)
 400
 401 struct l2vpn_pw {
 402         RB_ENTRY(l2vpn_pw)       entry;
 403         struct l2vpn            *l2vpn;
 404         struct in_addr           lsr_id;
 405         int                      af;
 406         union ldpd_addr          addr;
 407         uint32_t                 pwid;
 408         char                     ifname[IF_NAMESIZE];
 409         unsigned int             ifindex;
 410         uint32_t                 remote_group;
 411         uint16_t                 remote_mtu;
 412         uint32_t                 remote_status;
 413         uint8_t                  flags;
 414         QOBJ_FIELDS
 415 };
 416 RB_HEAD(l2vpn_pw_head, l2vpn_pw);
 417 RB_PROTOTYPE(l2vpn_pw_head, l2vpn_pw, entry, l2vpn_pw_compare);
 418 DECLARE_QOBJ_TYPE(l2vpn_pw)
 419 #define F_PW_STATUSTLV_CONF     0x01    /* status tlv configured */
 420 #define F_PW_STATUSTLV          0x02    /* status tlv negotiated */
 421 #define F_PW_CWORD_CONF         0x04    /* control word configured */
 422 #define F_PW_CWORD              0x08    /* control word negotiated */
 423 #define F_PW_STATUS_UP          0x10    /* pseudowire is operational */
 424 #define F_PW_STATIC_NBR_ADDR    0x20    /* static neighbor address configured */
 425
 426 struct l2vpn {
 427         RB_ENTRY(l2vpn)          entry;
 428         char                     name[L2VPN_NAME_LEN];
 429         int                      type;
 430         int                      pw_type;
 431         int                      mtu;
 432         char                     br_ifname[IF_NAMESIZE];
 433         unsigned int             br_ifindex;
 434         struct l2vpn_if_head     if_tree;
 435         struct l2vpn_pw_head     pw_tree;
 436         struct l2vpn_pw_head     pw_inactive_tree;
 437         QOBJ_FIELDS
 438 };
 439 RB_HEAD(l2vpn_head, l2vpn);
 440 RB_PROTOTYPE(l2vpn_head, l2vpn, entry, l2vpn_compare);
 441 DECLARE_QOBJ_TYPE(l2vpn)
 442 #define L2VPN_TYPE_VPWS         1
 443 #define L2VPN_TYPE_VPLS         2
 444
 445 /* ldp_conf */
 446 enum ldpd_process {
 447         PROC_MAIN,
 448         PROC_LDP_ENGINE,
 449         PROC_LDE_ENGINE
 450 } ldpd_process;
 451
 452 static const char * const log_procnames[] = {
 453         "parent",
 454         "ldpe",
 455         "lde"
 456 };
 457
 458 enum socket_type {
 459         LDP_SOCKET_DISC,
 460         LDP_SOCKET_EDISC,
 461         LDP_SOCKET_SESSION
 462 };
 463
 464 enum hello_type {
 465         HELLO_LINK,
 466         HELLO_TARGETED
 467 };
 468
 469 struct ldpd_af_conf {
 470         uint16_t                 keepalive;
 471         uint16_t                 lhello_holdtime;
 472         uint16_t                 lhello_interval;
 473         uint16_t                 thello_holdtime;
 474         uint16_t                 thello_interval;
 475         union ldpd_addr          trans_addr;
 476         char                     acl_thello_accept_from[ACL_NAMSIZ];
 477         char                     acl_label_allocate_for[ACL_NAMSIZ];
 478         char                     acl_label_advertise_to[ACL_NAMSIZ];
 479         char                     acl_label_advertise_for[ACL_NAMSIZ];
 480         char                     acl_label_expnull_for[ACL_NAMSIZ];
 481         char                     acl_label_accept_from[ACL_NAMSIZ];
 482         char                     acl_label_accept_for[ACL_NAMSIZ];
 483         int                      flags;
 484 };
 485 #define F_LDPD_AF_ENABLED       0x0001
 486 #define F_LDPD_AF_THELLO_ACCEPT 0x0002
 487 #define F_LDPD_AF_EXPNULL       0x0004
 488 #define F_LDPD_AF_NO_GTSM       0x0008
 489 #define F_LDPD_AF_ALLOCHOSTONLY 0x0010
 490
 491 struct ldpd_conf {
 492         struct in_addr           rtr_id;
 493         struct ldpd_af_conf      ipv4;
 494         struct ldpd_af_conf      ipv6;
 495         struct iface_head        iface_tree;
 496         struct tnbr_head         tnbr_tree;
 497         struct nbrp_head         nbrp_tree;
 498         struct l2vpn_head        l2vpn_tree;
 499         uint16_t                 lhello_holdtime;
 500         uint16_t                 lhello_interval;
 501         uint16_t                 thello_holdtime;
 502         uint16_t                 thello_interval;
 503         uint16_t                 trans_pref;
 504         int                      flags;
 505         QOBJ_FIELDS
 506 };
 507 DECLARE_QOBJ_TYPE(ldpd_conf)
 508 #define F_LDPD_NO_FIB_UPDATE    0x0001
 509 #define F_LDPD_DS_CISCO_INTEROP 0x0002
 510 #define F_LDPD_ENABLED          0x0004
 511
 512 struct ldpd_af_global {
 513         struct thread           *disc_ev;
 514         struct thread           *edisc_ev;
 515         int                      ldp_disc_socket;
 516         int                      ldp_edisc_socket;
 517         int                      ldp_session_socket;
 518 };
 519
 520 struct ldpd_global {
 521         int                      cmd_opts;
 522         int                      sighup;
 523         struct in_addr           rtr_id;
 524         struct ldpd_af_global    ipv4;
 525         struct ldpd_af_global    ipv6;
 526         uint32_t                 conf_seqnum;
 527         int                      pfkeysock;
 528         struct if_addr_head      addr_list;
 529         struct global_adj_head   adj_tree;
 530         struct in_addr           mcast_addr_v4;
 531         struct in6_addr          mcast_addr_v6;
 532         TAILQ_HEAD(, pending_conn) pending_conns;
 533 };
 534
 535 /* kroute */
 536 struct kroute {
 537         int                      af;
 538         union ldpd_addr          prefix;
 539         uint8_t                  prefixlen;
 540         union ldpd_addr          nexthop;
 541         uint32_t                 local_label;
 542         uint32_t                 remote_label;
 543         unsigned short           ifindex;
 544         uint8_t                  priority;
 545         uint16_t                 flags;
 546 };
 547
 548 struct kpw {
 549         unsigned short           ifindex;
 550         int                      pw_type;
 551         int                      af;
 552         union ldpd_addr          nexthop;
 553         uint32_t                 local_label;
 554         uint32_t                 remote_label;
 555         uint8_t                  flags;
 556 };
 557
 558 struct kaddr {
 559         char                     ifname[IF_NAMESIZE];
 560         unsigned short           ifindex;
 561         int                      af;
 562         union ldpd_addr          addr;
 563         uint8_t                  prefixlen;
 564         union ldpd_addr          dstbrd;
 565 };
 566
 567 struct kif {
 568         char                     ifname[IF_NAMESIZE];
 569         unsigned short           ifindex;
 570         int                      flags;
 571         int                      operative;
 572         uint8_t                  mac[ETHER_ADDR_LEN];
 573         int                      mtu;
 574 };
 575
 576 struct acl_check {
 577         char                     acl[ACL_NAMSIZ];
 578         int                      af;
 579         union ldpd_addr          addr;
 580         uint8_t                  prefixlen;
 581 };
 582
 583 /* control data structures */
 584 struct ctl_iface {
 585         int                      af;
 586         char                     name[IF_NAMESIZE];
 587         unsigned int             ifindex;
 588         int                      state;
 589         enum iface_type          type;
 590         uint16_t                 hello_holdtime;
 591         uint16_t                 hello_interval;
 592         time_t                   uptime;
 593         uint16_t                 adj_cnt;
 594 };
 595
 596 struct ctl_disc_if {
 597         char                     name[IF_NAMESIZE];
 598         int                      active_v4;
 599         int                      active_v6;
 600         int                      no_adj;
 601 };
 602
 603 struct ctl_disc_tnbr {
 604         int                      af;
 605         union ldpd_addr          addr;
 606         int                      no_adj;
 607 };
 608
 609 struct ctl_adj {
 610         int                      af;
 611         struct in_addr           id;
 612         enum hello_type          type;
 613         char                     ifname[IF_NAMESIZE];
 614         union ldpd_addr          src_addr;
 615         uint16_t                 holdtime;
 616         uint16_t                 holdtime_remaining;
 617         union ldpd_addr          trans_addr;
 618         int                      ds_tlv;
 619 };
 620
 621 struct ctl_nbr {
 622         int                      af;
 623         struct in_addr           id;
 624         union ldpd_addr          laddr;
 625         in_port_t                lport;
 626         union ldpd_addr          raddr;
 627         in_port_t                rport;
 628         enum auth_method         auth_method;
 629         uint16_t                 holdtime;
 630         time_t                   uptime;
 631         int                      nbr_state;
 632         struct ldp_stats         stats;
 633         int                      flags;
 634 };
 635
 636 struct ctl_rt {
 637         int                      af;
 638         union ldpd_addr          prefix;
 639         uint8_t                  prefixlen;
 640         struct in_addr           nexthop;       /* lsr-id */
 641         uint32_t                 local_label;
 642         uint32_t                 remote_label;
 643         uint8_t                  flags;
 644         uint8_t                  in_use;
 645         int                      no_downstream;
 646 };
 647
 648 struct ctl_pw {
 649         uint16_t                 type;
 650         char                     l2vpn_name[L2VPN_NAME_LEN];
 651         char                     ifname[IF_NAMESIZE];
 652         uint32_t                 pwid;
 653         struct in_addr           lsr_id;
 654         uint32_t                 local_label;
 655         uint32_t                 local_gid;
 656         uint16_t                 local_ifmtu;
 657         uint8_t                  local_cword;
 658         uint32_t                 remote_label;
 659         uint32_t                 remote_gid;
 660         uint16_t                 remote_ifmtu;
 661         uint8_t                  remote_cword;
 662         uint32_t                 status;
 663 };
 664
 665 extern struct ldpd_conf         *ldpd_conf, *vty_conf;
 666 extern struct ldpd_global        global;
 667 extern struct ldpd_init          init;
 668
 669 /* parse.y */
 670 struct ldpd_conf        *parse_config(char *);
 671 int                      cmdline_symset(char *);
 672
 673 /* kroute.c */
 674 void             kif_redistribute(const char *);
 675 int              kr_change(struct kroute *);
 676 int              kr_delete(struct kroute *);
 677 int              kmpw_set(struct kpw *);
 678 int              kmpw_unset(struct kpw *);
 679
 680 /* util.c */
 681 uint8_t          mask2prefixlen(in_addr_t);
 682 uint8_t          mask2prefixlen6(struct sockaddr_in6 *);
 683 in_addr_t        prefixlen2mask(uint8_t);
 684 struct in6_addr *prefixlen2mask6(uint8_t);
 685 void             ldp_applymask(int, union ldpd_addr *,
 686                     const union ldpd_addr *, int);
 687 int              ldp_addrcmp(int, const union ldpd_addr *,
 688                     const union ldpd_addr *);
 689 int              ldp_addrisset(int, const union ldpd_addr *);
 690 int              ldp_prefixcmp(int, const union ldpd_addr *,
 691                     const union ldpd_addr *, uint8_t);
 692 int              bad_addr_v4(struct in_addr);
 693 int              bad_addr_v6(struct in6_addr *);
 694 int              bad_addr(int, union ldpd_addr *);
 695 void             embedscope(struct sockaddr_in6 *);
 696 void             recoverscope(struct sockaddr_in6 *);
 697 void             addscope(struct sockaddr_in6 *, uint32_t);
 698 void             clearscope(struct in6_addr *);
 699 struct sockaddr *addr2sa(int af, union ldpd_addr *, uint16_t);
 700 void             sa2addr(struct sockaddr *, int *, union ldpd_addr *,
 701                     in_port_t *);
 702 socklen_t        sockaddr_len(struct sockaddr *);
 703
 704 /* ldpd.c */
 705 int                      ldp_write_handler(struct thread *);
 706 void                     main_imsg_compose_ldpe(int, pid_t, void *, uint16_t);
 707 void                     main_imsg_compose_lde(int, pid_t, void *, uint16_t);
 708 int                      main_imsg_compose_both(enum imsg_type, void *,
 709                             uint16_t);
 710 void                     imsg_event_add(struct imsgev *);
 711 int                      imsg_compose_event(struct imsgev *, uint16_t, uint32_t,
 712                             pid_t, int, void *, uint16_t);
 713 void                     evbuf_enqueue(struct evbuf *, struct ibuf *);
 714 void                     evbuf_event_add(struct evbuf *);
 715 void                     evbuf_init(struct evbuf *, int,
 716                             int (*)(struct thread *), void *);
 717 void                     evbuf_clear(struct evbuf *);
 718 int                      ldp_acl_request(struct imsgev *, char *, int,
 719                             union ldpd_addr *, uint8_t);
 720 void                     ldp_acl_reply(struct imsgev *, struct acl_check *);
 721 struct ldpd_af_conf     *ldp_af_conf_get(struct ldpd_conf *, int);
 722 struct ldpd_af_global   *ldp_af_global_get(struct ldpd_global *, int);
 723 int                      ldp_is_dual_stack(struct ldpd_conf *);
 724 in_addr_t                ldp_rtr_id_get(struct ldpd_conf *);
 725 int                      ldp_reload(struct ldpd_conf *);
 726 void                     ldp_clear_config(struct ldpd_conf *);
 727 void                     merge_config(struct ldpd_conf *, struct ldpd_conf *);
 728 struct ldpd_conf        *config_new_empty(void);
 729 void                     config_clear(struct ldpd_conf *);
 730
 731 /* ldp_vty_conf.c */
 732 /* NOTE: the parameters' names should be preserved because of codegen */
 733 struct iface            *iface_new_api(struct ldpd_conf *conf,
 734                             const char *name);
 735 void                     iface_del_api(struct ldpd_conf *conf,
 736                             struct iface *iface);
 737 struct tnbr             *tnbr_new_api(struct ldpd_conf *conf, int af,
 738                             union ldpd_addr *addr);
 739 void                     tnbr_del_api(struct ldpd_conf *conf, struct tnbr *tnbr);
 740 struct nbr_params       *nbrp_new_api(struct ldpd_conf *conf,
 741                             struct in_addr lsr_id);
 742 void                     nbrp_del_api(struct ldpd_conf *conf,
 743                             struct nbr_params *nbrp);
 744 struct l2vpn            *l2vpn_new_api(struct ldpd_conf *conf, const char *name);
 745 void                     l2vpn_del_api(struct ldpd_conf *conf,
 746                             struct l2vpn *l2vpn);
 747 struct l2vpn_if         *l2vpn_if_new_api(struct ldpd_conf *conf,
 748                             struct l2vpn *l2vpn, const char *ifname);
 749 void                     l2vpn_if_del_api(struct l2vpn *l2vpn,
 750                            struct l2vpn_if *lif);
 751 struct l2vpn_pw         *l2vpn_pw_new_api(struct ldpd_conf *conf,
 752                             struct l2vpn *l2vpn, const char *ifname);
 753 void                     l2vpn_pw_del_api(struct l2vpn *l2vpn,
 754                             struct l2vpn_pw *pw);
 755
 756 /* socket.c */
 757 int              ldp_create_socket(int, enum socket_type);
 758 void             sock_set_nonblock(int);
 759 void             sock_set_cloexec(int);
 760 void             sock_set_recvbuf(int);
 761 int              sock_set_reuse(int, int);
 762 int              sock_set_bindany(int, int);
 763 int              sock_set_md5sig(int, int, union ldpd_addr *, const char *);
 764 int              sock_set_ipv4_tos(int, int);
 765 int              sock_set_ipv4_pktinfo(int, int);
 766 int              sock_set_ipv4_recvdstaddr(int, int);
 767 int              sock_set_ipv4_recvif(int, int);
 768 int              sock_set_ipv4_minttl(int, int);
 769 int              sock_set_ipv4_ucast_ttl(int fd, int);
 770 int              sock_set_ipv4_mcast_ttl(int, uint8_t);
 771 int              sock_set_ipv4_mcast(struct iface *);
 772 int              sock_set_ipv4_mcast_loop(int);
 773 int              sock_set_ipv6_dscp(int, int);
 774 int              sock_set_ipv6_pktinfo(int, int);
 775 int              sock_set_ipv6_minhopcount(int, int);
 776 int              sock_set_ipv6_ucast_hops(int, int);
 777 int              sock_set_ipv6_mcast_hops(int, int);
 778 int              sock_set_ipv6_mcast(struct iface *);
 779 int              sock_set_ipv6_mcast_loop(int);
 780
 781 /* logmsg.h */
 782 struct in6_addr;
 783 union ldpd_addr;
 784 struct hello_source;
 785 struct fec;
 786
 787 const char      *log_sockaddr(void *);
 788 const char      *log_in6addr(const struct in6_addr *);
 789 const char      *log_in6addr_scope(const struct in6_addr *, unsigned int);
 790 const char      *log_addr(int, const union ldpd_addr *);
 791 char            *log_label(uint32_t);
 792 const char      *log_time(time_t);
 793 char            *log_hello_src(const struct hello_source *);
 794 const char      *log_map(const struct map *);
 795 const char      *log_fec(const struct fec *);
 796 const char      *af_name(int);
 797 const char      *socket_name(int);
 798 const char      *nbr_state_name(int);
 799 const char      *if_state_name(int);
 800 const char      *if_type_name(enum iface_type);
 801 const char      *msg_name(uint16_t);
 802 const char      *status_code_name(uint32_t);
 803 const char      *pw_type_name(uint16_t);
 804
 805 /* quagga */
 806 extern struct thread_master     *master;
 807 extern char                      ctl_sock_path[MAXPATHLEN];
 808
 809 /* ldp_zebra.c */
 810 void             ldp_zebra_init(struct thread_master *);
 811 void             ldp_zebra_destroy(void);
 812
 813 /* compatibility */
 814 #ifndef __OpenBSD__
 815 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 816 #define __IPV6_ADDR_SCOPE_INTFACELOCAL  0x01
 817 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)  \
 818         (IN6_IS_ADDR_MULTICAST(a) &&    \
 819         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_INTFACELOCAL))
 820 #endif
 821
 822 #endif  /* _LDPD_H_ */