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 "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 "vty.h"
  33 #include "pw.h"
  34 #include "zclient.h"
  35
  36 #include "ldp.h"
  37
  38 #define CONF_FILE               "/etc/ldpd.conf"
  39 #define LDPD_USER               "_ldpd"
  40
  41 #define LDPD_FD_ASYNC           3
  42 #define LDPD_FD_SYNC            4
  43
  44 #define LDPD_OPT_VERBOSE        0x00000001
  45 #define LDPD_OPT_VERBOSE2       0x00000002
  46 #define LDPD_OPT_NOACTION       0x00000004
  47
  48 #define TCP_MD5_KEY_LEN         80
  49
  50 #define RT_BUF_SIZE             16384
  51 #define MAX_RTSOCK_BUF          128 * 1024
  52 #define LDP_BACKLOG             128
  53
  54 #define F_LDPD_INSERTED         0x0001
  55 #define F_CONNECTED             0x0002
  56 #define F_STATIC                0x0004
  57 #define F_DYNAMIC               0x0008
  58 #define F_REJECT                0x0010
  59 #define F_BLACKHOLE             0x0020
  60 #define F_REDISTRIBUTED         0x0040
  61
  62 struct evbuf {
  63         struct msgbuf            wbuf;
  64         struct thread           *ev;
  65         int                      (*handler)(struct thread *);
  66         void                    *arg;
  67 };
  68
  69 struct imsgev {
  70         struct imsgbuf           ibuf;
  71         int                     (*handler_write)(struct thread *);
  72         struct thread           *ev_write;
  73         int                     (*handler_read)(struct thread *);
  74         struct thread           *ev_read;
  75 };
  76
  77 enum imsg_type {
  78         IMSG_NONE,
  79         IMSG_CTL_RELOAD,
  80         IMSG_CTL_SHOW_INTERFACE,
  81         IMSG_CTL_SHOW_DISCOVERY,
  82         IMSG_CTL_SHOW_DISCOVERY_DTL,
  83         IMSG_CTL_SHOW_DISC_IFACE,
  84         IMSG_CTL_SHOW_DISC_TNBR,
  85         IMSG_CTL_SHOW_DISC_ADJ,
  86         IMSG_CTL_SHOW_NBR,
  87         IMSG_CTL_SHOW_NBR_DISC,
  88         IMSG_CTL_SHOW_NBR_END,
  89         IMSG_CTL_SHOW_LIB,
  90         IMSG_CTL_SHOW_LIB_BEGIN,
  91         IMSG_CTL_SHOW_LIB_SENT,
  92         IMSG_CTL_SHOW_LIB_RCVD,
  93         IMSG_CTL_SHOW_LIB_END,
  94         IMSG_CTL_SHOW_L2VPN_PW,
  95         IMSG_CTL_SHOW_L2VPN_BINDING,
  96         IMSG_CTL_CLEAR_NBR,
  97         IMSG_CTL_FIB_COUPLE,
  98         IMSG_CTL_FIB_DECOUPLE,
  99         IMSG_CTL_KROUTE,
 100         IMSG_CTL_KROUTE_ADDR,
 101         IMSG_CTL_IFINFO,
 102         IMSG_CTL_END,
 103         IMSG_CTL_LOG_VERBOSE,
 104         IMSG_KLABEL_CHANGE,
 105         IMSG_KLABEL_DELETE,
 106         IMSG_KPW_ADD,
 107         IMSG_KPW_DELETE,
 108         IMSG_KPW_SET,
 109         IMSG_KPW_UNSET,
 110         IMSG_IFSTATUS,
 111         IMSG_NEWADDR,
 112         IMSG_DELADDR,
 113         IMSG_RTRID_UPDATE,
 114         IMSG_LABEL_MAPPING,
 115         IMSG_LABEL_MAPPING_FULL,
 116         IMSG_LABEL_REQUEST,
 117         IMSG_LABEL_RELEASE,
 118         IMSG_LABEL_WITHDRAW,
 119         IMSG_LABEL_ABORT,
 120         IMSG_REQUEST_ADD,
 121         IMSG_REQUEST_ADD_END,
 122         IMSG_MAPPING_ADD,
 123         IMSG_MAPPING_ADD_END,
 124         IMSG_RELEASE_ADD,
 125         IMSG_RELEASE_ADD_END,
 126         IMSG_WITHDRAW_ADD,
 127         IMSG_WITHDRAW_ADD_END,
 128         IMSG_ADDRESS_ADD,
 129         IMSG_ADDRESS_DEL,
 130         IMSG_NOTIFICATION,
 131         IMSG_NOTIFICATION_SEND,
 132         IMSG_NEIGHBOR_UP,
 133         IMSG_NEIGHBOR_DOWN,
 134         IMSG_NETWORK_ADD,
 135         IMSG_NETWORK_UPDATE,
 136         IMSG_SOCKET_IPC,
 137         IMSG_SOCKET_NET,
 138         IMSG_CLOSE_SOCKETS,
 139         IMSG_REQUEST_SOCKETS,
 140         IMSG_SETUP_SOCKETS,
 141         IMSG_RECONF_CONF,
 142         IMSG_RECONF_IFACE,
 143         IMSG_RECONF_TNBR,
 144         IMSG_RECONF_NBRP,
 145         IMSG_RECONF_L2VPN,
 146         IMSG_RECONF_L2VPN_IF,
 147         IMSG_RECONF_L2VPN_PW,
 148         IMSG_RECONF_L2VPN_IPW,
 149         IMSG_RECONF_END,
 150         IMSG_DEBUG_UPDATE,
 151         IMSG_LOG,
 152         IMSG_ACL_CHECK,
 153         IMSG_INIT,
 154         IMSG_PW_UPDATE
 155 };
 156
 157 struct ldpd_init {
 158         char             user[256];
 159         char             group[256];
 160         char             ctl_sock_path[MAXPATHLEN];
 161         char             zclient_serv_path[MAXPATHLEN];
 162         unsigned short instance;
 163 };
 164
 165 union ldpd_addr {
 166         struct in_addr  v4;
 167         struct in6_addr v6;
 168 };
 169
 170 #define IN6_IS_SCOPE_EMBED(a)   \
 171         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 172          (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
 173          (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
 174
 175 /* interface states */
 176 #define IF_STA_DOWN             0x01
 177 #define IF_STA_ACTIVE           0x02
 178
 179 /* targeted neighbor states */
 180 #define TNBR_STA_DOWN           0x01
 181 #define TNBR_STA_ACTIVE         0x02
 182
 183 /* interface types */
 184 enum iface_type {
 185         IF_TYPE_POINTOPOINT,
 186         IF_TYPE_BROADCAST
 187 };
 188
 189 /* neighbor states */
 190 #define NBR_STA_PRESENT         0x0001
 191 #define NBR_STA_INITIAL         0x0002
 192 #define NBR_STA_OPENREC         0x0004
 193 #define NBR_STA_OPENSENT        0x0008
 194 #define NBR_STA_OPER            0x0010
 195 #define NBR_STA_SESSION         (NBR_STA_INITIAL | NBR_STA_OPENREC | \
 196                                 NBR_STA_OPENSENT | NBR_STA_OPER)
 197
 198 /* neighbor events */
 199 enum nbr_event {
 200         NBR_EVT_NOTHING,
 201         NBR_EVT_MATCH_ADJ,
 202         NBR_EVT_CONNECT_UP,
 203         NBR_EVT_CLOSE_SESSION,
 204         NBR_EVT_INIT_RCVD,
 205         NBR_EVT_KEEPALIVE_RCVD,
 206         NBR_EVT_PDU_RCVD,
 207         NBR_EVT_PDU_SENT,
 208         NBR_EVT_INIT_SENT
 209 };
 210
 211 /* neighbor actions */
 212 enum nbr_action {
 213         NBR_ACT_NOTHING,
 214         NBR_ACT_RST_KTIMEOUT,
 215         NBR_ACT_SESSION_EST,
 216         NBR_ACT_RST_KTIMER,
 217         NBR_ACT_CONNECT_SETUP,
 218         NBR_ACT_PASSIVE_INIT,
 219         NBR_ACT_KEEPALIVE_SEND,
 220         NBR_ACT_CLOSE_SESSION
 221 };
 222
 223 /* forward declarations */
 224 RB_HEAD(global_adj_head, adj);
 225 RB_HEAD(nbr_adj_head, adj);
 226 RB_HEAD(ia_adj_head, adj);
 227
 228 struct map {
 229         uint8_t         type;
 230         uint32_t        msg_id;
 231         union {
 232                 struct {
 233                         uint16_t        af;
 234                         union ldpd_addr prefix;
 235                         uint8_t         prefixlen;
 236                 } prefix;
 237                 struct {
 238                         uint16_t        type;
 239                         uint32_t        pwid;
 240                         uint32_t        group_id;
 241                         uint16_t        ifmtu;
 242                 } pwid;
 243                 struct {
 244                         uint8_t         type;
 245                         union {
 246                                 uint16_t        prefix_af;
 247                                 uint16_t        pw_type;
 248                         } u;
 249                 } twcard;
 250         } fec;
 251         struct {
 252                 uint32_t        status_code;
 253                 uint32_t        msg_id;
 254                 uint16_t        msg_type;
 255         } st;
 256         uint32_t        label;
 257         uint32_t        requestid;
 258         uint32_t        pw_status;
 259         uint8_t         flags;
 260 };
 261 #define F_MAP_REQ_ID    0x01    /* optional request message id present */
 262 #define F_MAP_STATUS    0x02    /* status */
 263 #define F_MAP_PW_CWORD  0x04    /* pseudowire control word */
 264 #define F_MAP_PW_ID     0x08    /* pseudowire connection id */
 265 #define F_MAP_PW_IFMTU  0x10    /* pseudowire interface parameter */
 266 #define F_MAP_PW_STATUS 0x20    /* pseudowire status */
 267
 268 struct notify_msg {
 269         uint32_t        status_code;
 270         uint32_t        msg_id;         /* network byte order */
 271         uint16_t        msg_type;       /* network byte order */
 272         uint32_t        pw_status;
 273         struct map      fec;
 274         struct {
 275                 uint16_t         type;
 276                 uint16_t         length;
 277                 char            *data;
 278         } rtlvs;
 279         uint8_t         flags;
 280 };
 281 #define F_NOTIF_PW_STATUS       0x01    /* pseudowire status tlv present */
 282 #define F_NOTIF_FEC             0x02    /* fec tlv present */
 283 #define F_NOTIF_RETURNED_TLVS   0x04    /* returned tlvs present */
 284
 285 struct if_addr {
 286         LIST_ENTRY(if_addr)      entry;
 287         int                      af;
 288         union ldpd_addr          addr;
 289         uint8_t                  prefixlen;
 290         union ldpd_addr          dstbrd;
 291 };
 292 LIST_HEAD(if_addr_head, if_addr);
 293
 294 struct iface_af {
 295         struct iface            *iface;
 296         int                      af;
 297         int                      enabled;
 298         int                      state;
 299         struct ia_adj_head       adj_tree;
 300         time_t                   uptime;
 301         struct thread           *hello_timer;
 302         uint16_t                 hello_holdtime;
 303         uint16_t                 hello_interval;
 304 };
 305
 306 struct iface {
 307         RB_ENTRY(iface)          entry;
 308         char                     name[IF_NAMESIZE];
 309         unsigned int             ifindex;
 310         struct if_addr_head      addr_list;
 311         struct in6_addr          linklocal;
 312         enum iface_type          type;
 313         int                      operative;
 314         struct iface_af          ipv4;
 315         struct iface_af          ipv6;
 316         QOBJ_FIELDS
 317 };
 318 RB_HEAD(iface_head, iface);
 319 RB_PROTOTYPE(iface_head, iface, entry, iface_compare);
 320 DECLARE_QOBJ_TYPE(iface)
 321
 322 /* source of targeted hellos */
 323 struct tnbr {
 324         RB_ENTRY(tnbr)           entry;
 325         struct thread           *hello_timer;
 326         struct adj              *adj;
 327         int                      af;
 328         union ldpd_addr          addr;
 329         int                      state;
 330         uint16_t                 pw_count;
 331         uint8_t                  flags;
 332         QOBJ_FIELDS
 333 };
 334 RB_HEAD(tnbr_head, tnbr);
 335 RB_PROTOTYPE(tnbr_head, tnbr, entry, tnbr_compare);
 336 DECLARE_QOBJ_TYPE(tnbr)
 337 #define F_TNBR_CONFIGURED        0x01
 338 #define F_TNBR_DYNAMIC           0x02
 339
 340 enum auth_method {
 341         AUTH_NONE,
 342         AUTH_MD5SIG
 343 };
 344
 345 /* neighbor specific parameters */
 346 struct nbr_params {
 347         RB_ENTRY(nbr_params)     entry;
 348         struct in_addr           lsr_id;
 349         uint16_t                 keepalive;
 350         int                      gtsm_enabled;
 351         uint8_t                  gtsm_hops;
 352         struct {
 353                 enum auth_method         method;
 354                 char                     md5key[TCP_MD5_KEY_LEN];
 355                 uint8_t                  md5key_len;
 356         } auth;
 357         uint8_t                  flags;
 358         QOBJ_FIELDS
 359 };
 360 RB_HEAD(nbrp_head, nbr_params);
 361 RB_PROTOTYPE(nbrp_head, nbr_params, entry, nbr_params_compare);
 362 DECLARE_QOBJ_TYPE(nbr_params)
 363 #define F_NBRP_KEEPALIVE         0x01
 364 #define F_NBRP_GTSM              0x02
 365 #define F_NBRP_GTSM_HOPS         0x04
 366
 367 struct ldp_stats {
 368         uint32_t                 kalive_sent;
 369         uint32_t                 kalive_rcvd;
 370         uint32_t                 addr_sent;
 371         uint32_t                 addr_rcvd;
 372         uint32_t                 addrwdraw_sent;
 373         uint32_t                 addrwdraw_rcvd;
 374         uint32_t                 notif_sent;
 375         uint32_t                 notif_rcvd;
 376         uint32_t                 capability_sent;
 377         uint32_t                 capability_rcvd;
 378         uint32_t                 labelmap_sent;
 379         uint32_t                 labelmap_rcvd;
 380         uint32_t                 labelreq_sent;
 381         uint32_t                 labelreq_rcvd;
 382         uint32_t                 labelwdraw_sent;
 383         uint32_t                 labelwdraw_rcvd;
 384         uint32_t                 labelrel_sent;
 385         uint32_t                 labelrel_rcvd;
 386         uint32_t                 labelabreq_sent;
 387         uint32_t                 labelabreq_rcvd;
 388 };
 389
 390 struct l2vpn_if {
 391         RB_ENTRY(l2vpn_if)       entry;
 392         struct l2vpn            *l2vpn;
 393         char                     ifname[IF_NAMESIZE];
 394         unsigned int             ifindex;
 395         int                      operative;
 396         uint8_t                  mac[ETH_ALEN];
 397         QOBJ_FIELDS
 398 };
 399 RB_HEAD(l2vpn_if_head, l2vpn_if);
 400 RB_PROTOTYPE(l2vpn_if_head, l2vpn_if, entry, l2vpn_if_compare);
 401 DECLARE_QOBJ_TYPE(l2vpn_if)
 402
 403 struct l2vpn_pw {
 404         RB_ENTRY(l2vpn_pw)       entry;
 405         struct l2vpn            *l2vpn;
 406         struct in_addr           lsr_id;
 407         int                      af;
 408         union ldpd_addr          addr;
 409         uint32_t                 pwid;
 410         char                     ifname[IF_NAMESIZE];
 411         unsigned int             ifindex;
 412         bool                     enabled;
 413         uint32_t                 remote_group;
 414         uint16_t                 remote_mtu;
 415         uint32_t                 local_status;
 416         uint32_t                 remote_status;
 417         uint8_t                  flags;
 418         QOBJ_FIELDS
 419 };
 420 RB_HEAD(l2vpn_pw_head, l2vpn_pw);
 421 RB_PROTOTYPE(l2vpn_pw_head, l2vpn_pw, entry, l2vpn_pw_compare);
 422 DECLARE_QOBJ_TYPE(l2vpn_pw)
 423 #define F_PW_STATUSTLV_CONF     0x01    /* status tlv configured */
 424 #define F_PW_STATUSTLV          0x02    /* status tlv negotiated */
 425 #define F_PW_CWORD_CONF         0x04    /* control word configured */
 426 #define F_PW_CWORD              0x08    /* control word negotiated */
 427 #define F_PW_STATIC_NBR_ADDR    0x10    /* static neighbor address configured */
 428
 429 struct l2vpn {
 430         RB_ENTRY(l2vpn)          entry;
 431         char                     name[L2VPN_NAME_LEN];
 432         int                      type;
 433         int                      pw_type;
 434         int                      mtu;
 435         char                     br_ifname[IF_NAMESIZE];
 436         unsigned int             br_ifindex;
 437         struct l2vpn_if_head     if_tree;
 438         struct l2vpn_pw_head     pw_tree;
 439         struct l2vpn_pw_head     pw_inactive_tree;
 440         QOBJ_FIELDS
 441 };
 442 RB_HEAD(l2vpn_head, l2vpn);
 443 RB_PROTOTYPE(l2vpn_head, l2vpn, entry, l2vpn_compare);
 444 DECLARE_QOBJ_TYPE(l2vpn)
 445 #define L2VPN_TYPE_VPWS         1
 446 #define L2VPN_TYPE_VPLS         2
 447
 448 /* ldp_conf */
 449 enum ldpd_process {
 450         PROC_MAIN,
 451         PROC_LDP_ENGINE,
 452         PROC_LDE_ENGINE
 453 } ldpd_process;
 454
 455 static const char * const log_procnames[] = {
 456         "parent",
 457         "ldpe",
 458         "lde"
 459 };
 460
 461 enum socket_type {
 462         LDP_SOCKET_DISC,
 463         LDP_SOCKET_EDISC,
 464         LDP_SOCKET_SESSION
 465 };
 466
 467 enum hello_type {
 468         HELLO_LINK,
 469         HELLO_TARGETED
 470 };
 471
 472 struct ldpd_af_conf {
 473         uint16_t                 keepalive;
 474         uint16_t                 lhello_holdtime;
 475         uint16_t                 lhello_interval;
 476         uint16_t                 thello_holdtime;
 477         uint16_t                 thello_interval;
 478         union ldpd_addr          trans_addr;
 479         char                     acl_thello_accept_from[ACL_NAMSIZ];
 480         char                     acl_label_allocate_for[ACL_NAMSIZ];
 481         char                     acl_label_advertise_to[ACL_NAMSIZ];
 482         char                     acl_label_advertise_for[ACL_NAMSIZ];
 483         char                     acl_label_expnull_for[ACL_NAMSIZ];
 484         char                     acl_label_accept_from[ACL_NAMSIZ];
 485         char                     acl_label_accept_for[ACL_NAMSIZ];
 486         int                      flags;
 487 };
 488 #define F_LDPD_AF_ENABLED       0x0001
 489 #define F_LDPD_AF_THELLO_ACCEPT 0x0002
 490 #define F_LDPD_AF_EXPNULL       0x0004
 491 #define F_LDPD_AF_NO_GTSM       0x0008
 492 #define F_LDPD_AF_ALLOCHOSTONLY 0x0010
 493
 494 struct ldpd_conf {
 495         struct in_addr           rtr_id;
 496         struct ldpd_af_conf      ipv4;
 497         struct ldpd_af_conf      ipv6;
 498         struct iface_head        iface_tree;
 499         struct tnbr_head         tnbr_tree;
 500         struct nbrp_head         nbrp_tree;
 501         struct l2vpn_head        l2vpn_tree;
 502         uint16_t                 lhello_holdtime;
 503         uint16_t                 lhello_interval;
 504         uint16_t                 thello_holdtime;
 505         uint16_t                 thello_interval;
 506         uint16_t                 trans_pref;
 507         int                      flags;
 508         QOBJ_FIELDS
 509 };
 510 DECLARE_QOBJ_TYPE(ldpd_conf)
 511 #define F_LDPD_NO_FIB_UPDATE    0x0001
 512 #define F_LDPD_DS_CISCO_INTEROP 0x0002
 513 #define F_LDPD_ENABLED          0x0004
 514
 515 struct ldpd_af_global {
 516         struct thread           *disc_ev;
 517         struct thread           *edisc_ev;
 518         int                      ldp_disc_socket;
 519         int                      ldp_edisc_socket;
 520         int                      ldp_session_socket;
 521 };
 522
 523 struct ldpd_global {
 524         int                      cmd_opts;
 525         struct in_addr           rtr_id;
 526         struct ldpd_af_global    ipv4;
 527         struct ldpd_af_global    ipv6;
 528         uint32_t                 conf_seqnum;
 529         int                      pfkeysock;
 530         struct if_addr_head      addr_list;
 531         struct global_adj_head   adj_tree;
 532         struct in_addr           mcast_addr_v4;
 533         struct in6_addr          mcast_addr_v6;
 534         TAILQ_HEAD(, pending_conn) pending_conns;
 535 };
 536
 537 /* kroute */
 538 struct kroute {
 539         int                      af;
 540         union ldpd_addr          prefix;
 541         uint8_t                  prefixlen;
 542         union ldpd_addr          nexthop;
 543         uint32_t                 local_label;
 544         uint32_t                 remote_label;
 545         unsigned short           ifindex;
 546         uint8_t                  priority;
 547         uint16_t                 flags;
 548 };
 549
 550 struct kaddr {
 551         char                     ifname[IF_NAMESIZE];
 552         unsigned short           ifindex;
 553         int                      af;
 554         union ldpd_addr          addr;
 555         uint8_t                  prefixlen;
 556         union ldpd_addr          dstbrd;
 557 };
 558
 559 struct kif {
 560         char                     ifname[IF_NAMESIZE];
 561         unsigned short           ifindex;
 562         int                      flags;
 563         int                      operative;
 564         uint8_t                  mac[ETH_ALEN];
 565         int                      mtu;
 566 };
 567
 568 struct acl_check {
 569         char                     acl[ACL_NAMSIZ];
 570         int                      af;
 571         union ldpd_addr          addr;
 572         uint8_t                  prefixlen;
 573 };
 574
 575 /* control data structures */
 576 struct ctl_iface {
 577         int                      af;
 578         char                     name[IF_NAMESIZE];
 579         unsigned int             ifindex;
 580         int                      state;
 581         enum iface_type          type;
 582         uint16_t                 hello_holdtime;
 583         uint16_t                 hello_interval;
 584         time_t                   uptime;
 585         uint16_t                 adj_cnt;
 586 };
 587
 588 struct ctl_disc_if {
 589         char                     name[IF_NAMESIZE];
 590         int                      active_v4;
 591         int                      active_v6;
 592         int                      no_adj;
 593 };
 594
 595 struct ctl_disc_tnbr {
 596         int                      af;
 597         union ldpd_addr          addr;
 598         int                      no_adj;
 599 };
 600
 601 struct ctl_adj {
 602         int                      af;
 603         struct in_addr           id;
 604         enum hello_type          type;
 605         char                     ifname[IF_NAMESIZE];
 606         union ldpd_addr          src_addr;
 607         uint16_t                 holdtime;
 608         uint16_t                 holdtime_remaining;
 609         union ldpd_addr          trans_addr;
 610         int                      ds_tlv;
 611 };
 612
 613 struct ctl_nbr {
 614         int                      af;
 615         struct in_addr           id;
 616         union ldpd_addr          laddr;
 617         in_port_t                lport;
 618         union ldpd_addr          raddr;
 619         in_port_t                rport;
 620         enum auth_method         auth_method;
 621         uint16_t                 holdtime;
 622         time_t                   uptime;
 623         int                      nbr_state;
 624         struct ldp_stats         stats;
 625         int                      flags;
 626 };
 627
 628 struct ctl_rt {
 629         int                      af;
 630         union ldpd_addr          prefix;
 631         uint8_t                  prefixlen;
 632         struct in_addr           nexthop;       /* lsr-id */
 633         uint32_t                 local_label;
 634         uint32_t                 remote_label;
 635         uint8_t                  flags;
 636         uint8_t                  in_use;
 637         int                      no_downstream;
 638 };
 639
 640 struct ctl_pw {
 641         uint16_t                 type;
 642         char                     l2vpn_name[L2VPN_NAME_LEN];
 643         char                     ifname[IF_NAMESIZE];
 644         uint32_t                 pwid;
 645         struct in_addr           lsr_id;
 646         uint32_t                 local_label;
 647         uint32_t                 local_gid;
 648         uint16_t                 local_ifmtu;
 649         uint8_t                  local_cword;
 650         uint32_t                 remote_label;
 651         uint32_t                 remote_gid;
 652         uint16_t                 remote_ifmtu;
 653         uint8_t                  remote_cword;
 654         uint32_t                 status;
 655 };
 656
 657 extern struct ldpd_conf         *ldpd_conf, *vty_conf;
 658 extern struct ldpd_global        global;
 659 extern struct ldpd_init          init;
 660
 661 /* parse.y */
 662 struct ldpd_conf        *parse_config(char *);
 663 int                      cmdline_symset(char *);
 664
 665 /* kroute.c */
 666 void             pw2zpw(struct l2vpn_pw *, struct zapi_pw *);
 667 void             kif_redistribute(const char *);
 668 int              kr_change(struct kroute *);
 669 int              kr_delete(struct kroute *);
 670 int              kmpw_add(struct zapi_pw *);
 671 int              kmpw_del(struct zapi_pw *);
 672 int              kmpw_set(struct zapi_pw *);
 673 int              kmpw_unset(struct zapi_pw *);
 674
 675 /* util.c */
 676 uint8_t          mask2prefixlen(in_addr_t);
 677 uint8_t          mask2prefixlen6(struct sockaddr_in6 *);
 678 in_addr_t        prefixlen2mask(uint8_t);
 679 struct in6_addr *prefixlen2mask6(uint8_t);
 680 void             ldp_applymask(int, union ldpd_addr *,
 681                     const union ldpd_addr *, int);
 682 int              ldp_addrcmp(int, const union ldpd_addr *,
 683                     const union ldpd_addr *);
 684 int              ldp_addrisset(int, const union ldpd_addr *);
 685 int              ldp_prefixcmp(int, const union ldpd_addr *,
 686                     const union ldpd_addr *, uint8_t);
 687 int              bad_addr_v4(struct in_addr);
 688 int              bad_addr_v6(struct in6_addr *);
 689 int              bad_addr(int, union ldpd_addr *);
 690 void             embedscope(struct sockaddr_in6 *);
 691 void             recoverscope(struct sockaddr_in6 *);
 692 void             addscope(struct sockaddr_in6 *, uint32_t);
 693 void             clearscope(struct in6_addr *);
 694 void             addr2sa(int af, const union ldpd_addr *, uint16_t,
 695                     union sockunion *su);
 696 void             sa2addr(struct sockaddr *, int *, union ldpd_addr *,
 697                     in_port_t *);
 698 socklen_t        sockaddr_len(struct sockaddr *);
 699
 700 /* ldpd.c */
 701 int                      ldp_write_handler(struct thread *);
 702 void                     main_imsg_compose_ldpe(int, pid_t, void *, uint16_t);
 703 void                     main_imsg_compose_lde(int, pid_t, void *, uint16_t);
 704 int                      main_imsg_compose_both(enum imsg_type, void *,
 705                             uint16_t);
 706 void                     imsg_event_add(struct imsgev *);
 707 int                      imsg_compose_event(struct imsgev *, uint16_t, uint32_t,
 708                             pid_t, int, void *, uint16_t);
 709 void                     evbuf_enqueue(struct evbuf *, struct ibuf *);
 710 void                     evbuf_event_add(struct evbuf *);
 711 void                     evbuf_init(struct evbuf *, int,
 712                             int (*)(struct thread *), void *);
 713 void                     evbuf_clear(struct evbuf *);
 714 int                      ldp_acl_request(struct imsgev *, char *, int,
 715                             union ldpd_addr *, uint8_t);
 716 void                     ldp_acl_reply(struct imsgev *, struct acl_check *);
 717 struct ldpd_af_conf     *ldp_af_conf_get(struct ldpd_conf *, int);
 718 struct ldpd_af_global   *ldp_af_global_get(struct ldpd_global *, int);
 719 int                      ldp_is_dual_stack(struct ldpd_conf *);
 720 in_addr_t                ldp_rtr_id_get(struct ldpd_conf *);
 721 int                      ldp_config_apply(struct vty *, struct ldpd_conf *);
 722 void                     ldp_clear_config(struct ldpd_conf *);
 723 void                     merge_config(struct ldpd_conf *, struct ldpd_conf *);
 724 struct ldpd_conf        *config_new_empty(void);
 725 void                     config_clear(struct ldpd_conf *);
 726
 727 /* ldp_vty_conf.c */
 728 /* NOTE: the parameters' names should be preserved because of codegen */
 729 struct iface            *iface_new_api(struct ldpd_conf *conf,
 730                             const char *name);
 731 void                     iface_del_api(struct ldpd_conf *conf,
 732                             struct iface *iface);
 733 struct tnbr             *tnbr_new_api(struct ldpd_conf *conf, int af,
 734                             union ldpd_addr *addr);
 735 void                     tnbr_del_api(struct ldpd_conf *conf, struct tnbr *tnbr);
 736 struct nbr_params       *nbrp_new_api(struct ldpd_conf *conf,
 737                             struct in_addr lsr_id);
 738 void                     nbrp_del_api(struct ldpd_conf *conf,
 739                             struct nbr_params *nbrp);
 740 struct l2vpn            *l2vpn_new_api(struct ldpd_conf *conf, const char *name);
 741 void                     l2vpn_del_api(struct ldpd_conf *conf,
 742                             struct l2vpn *l2vpn);
 743 struct l2vpn_if         *l2vpn_if_new_api(struct ldpd_conf *conf,
 744                             struct l2vpn *l2vpn, const char *ifname);
 745 void                     l2vpn_if_del_api(struct l2vpn *l2vpn,
 746                            struct l2vpn_if *lif);
 747 struct l2vpn_pw         *l2vpn_pw_new_api(struct ldpd_conf *conf,
 748                             struct l2vpn *l2vpn, const char *ifname);
 749 void                     l2vpn_pw_del_api(struct l2vpn *l2vpn,
 750                             struct l2vpn_pw *pw);
 751
 752 /* socket.c */
 753 int              ldp_create_socket(int, enum socket_type);
 754 void             sock_set_nonblock(int);
 755 void             sock_set_cloexec(int);
 756 void             sock_set_recvbuf(int);
 757 int              sock_set_reuse(int, int);
 758 int              sock_set_bindany(int, int);
 759 int              sock_set_md5sig(int, int, union ldpd_addr *, const char *);
 760 int              sock_set_ipv4_tos(int, int);
 761 int              sock_set_ipv4_pktinfo(int, int);
 762 int              sock_set_ipv4_recvdstaddr(int, int);
 763 int              sock_set_ipv4_recvif(int, int);
 764 int              sock_set_ipv4_minttl(int, int);
 765 int              sock_set_ipv4_ucast_ttl(int fd, int);
 766 int              sock_set_ipv4_mcast_ttl(int, uint8_t);
 767 int              sock_set_ipv4_mcast(struct iface *);
 768 int              sock_set_ipv4_mcast_loop(int);
 769 int              sock_set_ipv6_dscp(int, int);
 770 int              sock_set_ipv6_pktinfo(int, int);
 771 int              sock_set_ipv6_minhopcount(int, int);
 772 int              sock_set_ipv6_ucast_hops(int, int);
 773 int              sock_set_ipv6_mcast_hops(int, int);
 774 int              sock_set_ipv6_mcast(struct iface *);
 775 int              sock_set_ipv6_mcast_loop(int);
 776
 777 /* logmsg.h */
 778 struct in6_addr;
 779 union ldpd_addr;
 780 struct hello_source;
 781 struct fec;
 782
 783 const char      *log_sockaddr(void *);
 784 const char      *log_in6addr(const struct in6_addr *);
 785 const char      *log_in6addr_scope(const struct in6_addr *, unsigned int);
 786 const char      *log_addr(int, const union ldpd_addr *);
 787 char            *log_label(uint32_t);
 788 const char      *log_time(time_t);
 789 char            *log_hello_src(const struct hello_source *);
 790 const char      *log_map(const struct map *);
 791 const char      *log_fec(const struct fec *);
 792 const char      *af_name(int);
 793 const char      *socket_name(int);
 794 const char      *nbr_state_name(int);
 795 const char      *if_state_name(int);
 796 const char      *if_type_name(enum iface_type);
 797 const char      *msg_name(uint16_t);
 798 const char      *status_code_name(uint32_t);
 799 const char      *pw_type_name(uint16_t);
 800
 801 /* quagga */
 802 extern struct thread_master     *master;
 803 extern char                      ctl_sock_path[MAXPATHLEN];
 804
 805 /* ldp_zebra.c */
 806 void             ldp_zebra_init(struct thread_master *);
 807 void             ldp_zebra_destroy(void);
 808
 809 /* compatibility */
 810 #ifndef __OpenBSD__
 811 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 812 #define __IPV6_ADDR_SCOPE_INTFACELOCAL  0x01
 813 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)  \
 814         (IN6_IS_ADDR_MULTICAST(a) &&    \
 815         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_INTFACELOCAL))
 816 #endif
 817
 818 #endif  /* _LDPD_H_ */