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