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