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_GET_LABEL_CHUNK,
 150         IMSG_RELEASE_LABEL_CHUNK,
 151         IMSG_INIT
 152 };
 153
 154 struct ldpd_init {
 155         char             user[256];
 156         char             group[256];
 157         char             ctl_sock_path[MAXPATHLEN];
 158         char             zclient_serv_path[MAXPATHLEN];
 159         u_short          instance;
 160 };
 161
 162 union ldpd_addr {
 163         struct in_addr  v4;
 164         struct in6_addr v6;
 165 };
 166
 167 #define IN6_IS_SCOPE_EMBED(a)   \
 168         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
 169          (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
 170          (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
 171
 172 /* interface states */
 173 #define IF_STA_DOWN             0x01
 174 #define IF_STA_ACTIVE           0x02
 175
 176 /* targeted neighbor states */
 177 #define TNBR_STA_DOWN           0x01
 178 #define TNBR_STA_ACTIVE         0x02
 179
 180 /* interface types */
 181 enum iface_type {
 182         IF_TYPE_POINTOPOINT,
 183         IF_TYPE_BROADCAST
 184 };
 185
 186 /* neighbor states */
 187 #define NBR_STA_PRESENT         0x0001
 188 #define NBR_STA_INITIAL         0x0002
 189 #define NBR_STA_OPENREC         0x0004
 190 #define NBR_STA_OPENSENT        0x0008
 191 #define NBR_STA_OPER            0x0010
 192 #define NBR_STA_SESSION         (NBR_STA_INITIAL | NBR_STA_OPENREC | \
 193                                 NBR_STA_OPENSENT | NBR_STA_OPER)
 194
 195 /* neighbor events */
 196 enum nbr_event {
 197         NBR_EVT_NOTHING,
 198         NBR_EVT_MATCH_ADJ,
 199         NBR_EVT_CONNECT_UP,
 200         NBR_EVT_CLOSE_SESSION,
 201         NBR_EVT_INIT_RCVD,
 202         NBR_EVT_KEEPALIVE_RCVD,
 203         NBR_EVT_PDU_RCVD,
 204         NBR_EVT_PDU_SENT,
 205         NBR_EVT_INIT_SENT
 206 };
 207
 208 /* neighbor actions */
 209 enum nbr_action {
 210         NBR_ACT_NOTHING,
 211         NBR_ACT_RST_KTIMEOUT,
 212         NBR_ACT_SESSION_EST,
 213         NBR_ACT_RST_KTIMER,
 214         NBR_ACT_CONNECT_SETUP,
 215         NBR_ACT_PASSIVE_INIT,
 216         NBR_ACT_KEEPALIVE_SEND,
 217         NBR_ACT_CLOSE_SESSION
 218 };
 219
 220 /* forward declarations */
 221 RB_HEAD(global_adj_head, adj);
 222 RB_HEAD(nbr_adj_head, adj);
 223 RB_HEAD(ia_adj_head, adj);
 224
 225 struct map {
 226         uint8_t         type;
 227         uint32_t        msg_id;
 228         union {
 229                 struct {
 230                         uint16_t        af;
 231                         union ldpd_addr prefix;
 232                         uint8_t         prefixlen;
 233                 } prefix;
 234                 struct {
 235                         uint16_t        type;
 236                         uint32_t        pwid;
 237                         uint32_t        group_id;
 238                         uint16_t        ifmtu;
 239                 } pwid;
 240                 struct {
 241                         uint8_t         type;
 242                         union {
 243                                 uint16_t        prefix_af;
 244                                 uint16_t        pw_type;
 245                         } u;
 246                 } twcard;
 247         } fec;
 248         struct {
 249                 uint32_t        status_code;
 250                 uint32_t        msg_id;
 251                 uint16_t        msg_type;
 252         } st;
 253         uint32_t        label;
 254         uint32_t        requestid;
 255         uint32_t        pw_status;
 256         uint8_t         flags;
 257 };
 258 #define F_MAP_REQ_ID    0x01    /* optional request message id present */
 259 #define F_MAP_STATUS    0x02    /* status */
 260 #define F_MAP_PW_CWORD  0x04    /* pseudowire control word */
 261 #define F_MAP_PW_ID     0x08    /* pseudowire connection id */
 262 #define F_MAP_PW_IFMTU  0x10    /* pseudowire interface parameter */
 263 #define F_MAP_PW_STATUS 0x20    /* pseudowire status */
 264
 265 struct notify_msg {
 266         uint32_t        status_code;
 267         uint32_t        msg_id;         /* network byte order */
 268         uint16_t        msg_type;       /* network byte order */
 269         uint32_t        pw_status;
 270         struct map      fec;
 271         struct {
 272                 uint16_t         type;
 273                 uint16_t         length;
 274                 char            *data;
 275         } rtlvs;
 276         uint8_t         flags;
 277 };
 278 #define F_NOTIF_PW_STATUS       0x01    /* pseudowire status tlv present */
 279 #define F_NOTIF_FEC             0x02    /* fec tlv present */
 280 #define F_NOTIF_RETURNED_TLVS   0x04    /* returned tlvs present */
 281
 282 struct if_addr {
 283         LIST_ENTRY(if_addr)      entry;
 284         int                      af;
 285         union ldpd_addr          addr;
 286         uint8_t                  prefixlen;
 287         union ldpd_addr          dstbrd;
 288 };
 289 LIST_HEAD(if_addr_head, if_addr);
 290
 291 struct iface_af {
 292         struct iface            *iface;
 293         int                      af;
 294         int                      enabled;
 295         int                      state;
 296         struct ia_adj_head       adj_tree;
 297         time_t                   uptime;
 298         struct thread           *hello_timer;
 299         uint16_t                 hello_holdtime;
 300         uint16_t                 hello_interval;
 301 };
 302
 303 struct iface {
 304         RB_ENTRY(iface)          entry;
 305         char                     name[IF_NAMESIZE];
 306         unsigned int             ifindex;
 307         struct if_addr_head      addr_list;
 308         struct in6_addr          linklocal;
 309         enum iface_type          type;
 310         int                      operative;
 311         struct iface_af          ipv4;
 312         struct iface_af          ipv6;
 313         QOBJ_FIELDS
 314 };
 315 RB_HEAD(iface_head, iface);
 316 RB_PROTOTYPE(iface_head, iface, entry, iface_compare);
 317 DECLARE_QOBJ_TYPE(iface)
 318
 319 /* source of targeted hellos */
 320 struct tnbr {
 321         RB_ENTRY(tnbr)           entry;
 322         struct thread           *hello_timer;
 323         struct adj              *adj;
 324         int                      af;
 325         union ldpd_addr          addr;
 326         int                      state;
 327         uint16_t                 pw_count;
 328         uint8_t                  flags;
 329         QOBJ_FIELDS
 330 };
 331 RB_HEAD(tnbr_head, tnbr);
 332 RB_PROTOTYPE(tnbr_head, tnbr, entry, tnbr_compare);
 333 DECLARE_QOBJ_TYPE(tnbr)
 334 #define F_TNBR_CONFIGURED        0x01
 335 #define F_TNBR_DYNAMIC           0x02
 336
 337 enum auth_method {
 338         AUTH_NONE,
 339         AUTH_MD5SIG
 340 };
 341
 342 /* neighbor specific parameters */
 343 struct nbr_params {
 344         RB_ENTRY(nbr_params)     entry;
 345         struct in_addr           lsr_id;
 346         uint16_t                 keepalive;
 347         int                      gtsm_enabled;
 348         uint8_t                  gtsm_hops;
 349         struct {
 350                 enum auth_method         method;
 351                 char                     md5key[TCP_MD5_KEY_LEN];
 352                 uint8_t                  md5key_len;
 353         } auth;
 354         uint8_t                  flags;
 355         QOBJ_FIELDS
 356 };
 357 RB_HEAD(nbrp_head, nbr_params);
 358 RB_PROTOTYPE(nbrp_head, nbr_params, entry, nbr_params_compare);
 359 DECLARE_QOBJ_TYPE(nbr_params)
 360 #define F_NBRP_KEEPALIVE         0x01
 361 #define F_NBRP_GTSM              0x02
 362 #define F_NBRP_GTSM_HOPS         0x04
 363
 364 struct ldp_stats {
 365         uint32_t                 kalive_sent;
 366         uint32_t                 kalive_rcvd;
 367         uint32_t                 addr_sent;
 368         uint32_t                 addr_rcvd;
 369         uint32_t                 addrwdraw_sent;
 370         uint32_t                 addrwdraw_rcvd;
 371         uint32_t                 notif_sent;
 372         uint32_t                 notif_rcvd;
 373         uint32_t                 capability_sent;
 374         uint32_t                 capability_rcvd;
 375         uint32_t                 labelmap_sent;
 376         uint32_t                 labelmap_rcvd;
 377         uint32_t                 labelreq_sent;
 378         uint32_t                 labelreq_rcvd;
 379         uint32_t                 labelwdraw_sent;
 380         uint32_t                 labelwdraw_rcvd;
 381         uint32_t                 labelrel_sent;
 382         uint32_t                 labelrel_rcvd;
 383         uint32_t                 labelabreq_sent;
 384         uint32_t                 labelabreq_rcvd;
 385 };
 386
 387 struct l2vpn_if {
 388         RB_ENTRY(l2vpn_if)       entry;
 389         struct l2vpn            *l2vpn;
 390         char                     ifname[IF_NAMESIZE];
 391         unsigned int             ifindex;
 392         int                      operative;
 393         uint8_t                  mac[ETHER_ADDR_LEN];
 394         QOBJ_FIELDS
 395 };
 396 RB_HEAD(l2vpn_if_head, l2vpn_if);
 397 RB_PROTOTYPE(l2vpn_if_head, l2vpn_if, entry, l2vpn_if_compare);
 398 DECLARE_QOBJ_TYPE(l2vpn_if)
 399
 400 struct l2vpn_pw {
 401         RB_ENTRY(l2vpn_pw)       entry;
 402         struct l2vpn            *l2vpn;
 403         struct in_addr           lsr_id;
 404         int                      af;
 405         union ldpd_addr          addr;
 406         uint32_t                 pwid;
 407         char                     ifname[IF_NAMESIZE];
 408         unsigned int             ifindex;
 409         uint32_t                 remote_group;
 410         uint16_t                 remote_mtu;
 411         uint32_t                 remote_status;
 412         uint8_t                  flags;
 413         QOBJ_FIELDS
 414 };
 415 RB_HEAD(l2vpn_pw_head, l2vpn_pw);
 416 RB_PROTOTYPE(l2vpn_pw_head, l2vpn_pw, entry, l2vpn_pw_compare);
 417 DECLARE_QOBJ_TYPE(l2vpn_pw)
 418 #define F_PW_STATUSTLV_CONF     0x01    /* status tlv configured */
 419 #define F_PW_STATUSTLV          0x02    /* status tlv negotiated */
 420 #define F_PW_CWORD_CONF         0x04    /* control word configured */
 421 #define F_PW_CWORD              0x08    /* control word negotiated */
 422 #define F_PW_STATUS_UP          0x10    /* pseudowire is operational */
 423 #define F_PW_STATIC_NBR_ADDR    0x20    /* static neighbor address configured */
 424
 425 struct l2vpn {
 426         RB_ENTRY(l2vpn)          entry;
 427         char                     name[L2VPN_NAME_LEN];
 428         int                      type;
 429         int                      pw_type;
 430         int                      mtu;
 431         char                     br_ifname[IF_NAMESIZE];
 432         unsigned int             br_ifindex;
 433         struct l2vpn_if_head     if_tree;
 434         struct l2vpn_pw_head     pw_tree;
 435         struct l2vpn_pw_head     pw_inactive_tree;
 436         QOBJ_FIELDS
 437 };
 438 RB_HEAD(l2vpn_head, l2vpn);
 439 RB_PROTOTYPE(l2vpn_head, l2vpn, entry, l2vpn_compare);
 440 DECLARE_QOBJ_TYPE(l2vpn)
 441 #define L2VPN_TYPE_VPWS         1
 442 #define L2VPN_TYPE_VPLS         2
 443
 444 /* ldp_conf */
 445 enum ldpd_process {
 446         PROC_MAIN,
 447         PROC_LDP_ENGINE,
 448         PROC_LDE_ENGINE
 449 } ldpd_process;
 450
 451 static const char * const log_procnames[] = {
 452         "parent",
 453         "ldpe",
 454         "lde"
 455 };
 456
 457 enum socket_type {
 458         LDP_SOCKET_DISC,
 459         LDP_SOCKET_EDISC,
 460         LDP_SOCKET_SESSION
 461 };
 462
 463 enum hello_type {
 464         HELLO_LINK,
 465         HELLO_TARGETED
 466 };
 467
 468 struct ldpd_af_conf {
 469         uint16_t                 keepalive;
 470         uint16_t                 lhello_holdtime;
 471         uint16_t                 lhello_interval;
 472         uint16_t                 thello_holdtime;
 473         uint16_t                 thello_interval;
 474         union ldpd_addr          trans_addr;
 475         char                     acl_thello_accept_from[ACL_NAMSIZ];
 476         char                     acl_label_allocate_for[ACL_NAMSIZ];
 477         char                     acl_label_advertise_to[ACL_NAMSIZ];
 478         char                     acl_label_advertise_for[ACL_NAMSIZ];
 479         char                     acl_label_expnull_for[ACL_NAMSIZ];
 480         char                     acl_label_accept_from[ACL_NAMSIZ];
 481         char                     acl_label_accept_for[ACL_NAMSIZ];
 482         int                      flags;
 483 };
 484 #define F_LDPD_AF_ENABLED       0x0001
 485 #define F_LDPD_AF_THELLO_ACCEPT 0x0002
 486 #define F_LDPD_AF_EXPNULL       0x0004
 487 #define F_LDPD_AF_NO_GTSM       0x0008
 488 #define F_LDPD_AF_ALLOCHOSTONLY 0x0010
 489
 490 struct ldpd_conf {
 491         struct in_addr           rtr_id;
 492         struct ldpd_af_conf      ipv4;
 493         struct ldpd_af_conf      ipv6;
 494         struct iface_head        iface_tree;
 495         struct tnbr_head         tnbr_tree;
 496         struct nbrp_head         nbrp_tree;
 497         struct l2vpn_head        l2vpn_tree;
 498         uint16_t                 lhello_holdtime;
 499         uint16_t                 lhello_interval;
 500         uint16_t                 thello_holdtime;
 501         uint16_t                 thello_interval;
 502         uint16_t                 trans_pref;
 503         int                      flags;
 504         QOBJ_FIELDS
 505 };
 506 DECLARE_QOBJ_TYPE(ldpd_conf)
 507 #define F_LDPD_NO_FIB_UPDATE    0x0001
 508 #define F_LDPD_DS_CISCO_INTEROP 0x0002
 509 #define F_LDPD_ENABLED          0x0004
 510
 511 struct ldpd_af_global {
 512         struct thread           *disc_ev;
 513         struct thread           *edisc_ev;
 514         int                      ldp_disc_socket;
 515         int                      ldp_edisc_socket;
 516         int                      ldp_session_socket;
 517 };
 518
 519 struct ldpd_global {
 520         int                      cmd_opts;
 521         int                      sighup;
 522         struct in_addr           rtr_id;
 523         struct ldpd_af_global    ipv4;
 524         struct ldpd_af_global    ipv6;
 525         uint32_t                 conf_seqnum;
 526         int                      pfkeysock;
 527         struct if_addr_head      addr_list;
 528         struct global_adj_head   adj_tree;
 529         struct in_addr           mcast_addr_v4;
 530         struct in6_addr          mcast_addr_v6;
 531         TAILQ_HEAD(, pending_conn) pending_conns;
 532 };
 533
 534 /* kroute */
 535 struct kroute {
 536         int                      af;
 537         union ldpd_addr          prefix;
 538         uint8_t                  prefixlen;
 539         union ldpd_addr          nexthop;
 540         uint32_t                 local_label;
 541         uint32_t                 remote_label;
 542         unsigned short           ifindex;
 543         uint8_t                  priority;
 544         uint16_t                 flags;
 545 };
 546
 547 struct kpw {
 548         unsigned short           ifindex;
 549         int                      pw_type;
 550         int                      af;
 551         union ldpd_addr          nexthop;
 552         uint32_t                 local_label;
 553         uint32_t                 remote_label;
 554         uint8_t                  flags;
 555 };
 556
 557 struct kaddr {
 558         char                     ifname[IF_NAMESIZE];
 559         unsigned short           ifindex;
 560         int                      af;
 561         union ldpd_addr          addr;
 562         uint8_t                  prefixlen;
 563         union ldpd_addr          dstbrd;
 564 };
 565
 566 struct kif {
 567         char                     ifname[IF_NAMESIZE];
 568         unsigned short           ifindex;
 569         int                      flags;
 570         int                      operative;
 571         uint8_t                  mac[ETHER_ADDR_LEN];
 572         int                      mtu;
 573 };
 574
 575 struct acl_check {
 576         char                     acl[ACL_NAMSIZ];
 577         int                      af;
 578         union ldpd_addr          addr;
 579         uint8_t                  prefixlen;
 580 };
 581
 582 /* control data structures */
 583 struct ctl_iface {
 584         int                      af;
 585         char                     name[IF_NAMESIZE];
 586         unsigned int             ifindex;
 587         int                      state;
 588         enum iface_type          type;
 589         uint16_t                 hello_holdtime;
 590         uint16_t                 hello_interval;
 591         time_t                   uptime;
 592         uint16_t                 adj_cnt;
 593 };
 594
 595 struct ctl_disc_if {
 596         char                     name[IF_NAMESIZE];
 597         int                      active_v4;
 598         int                      active_v6;
 599         int                      no_adj;
 600 };
 601
 602 struct ctl_disc_tnbr {
 603         int                      af;
 604         union ldpd_addr          addr;
 605         int                      no_adj;
 606 };
 607
 608 struct ctl_adj {
 609         int                      af;
 610         struct in_addr           id;
 611         enum hello_type          type;
 612         char                     ifname[IF_NAMESIZE];
 613         union ldpd_addr          src_addr;
 614         uint16_t                 holdtime;
 615         uint16_t                 holdtime_remaining;
 616         union ldpd_addr          trans_addr;
 617         int                      ds_tlv;
 618 };
 619
 620 struct ctl_nbr {
 621         int                      af;
 622         struct in_addr           id;
 623         union ldpd_addr          laddr;
 624         in_port_t                lport;
 625         union ldpd_addr          raddr;
 626         in_port_t                rport;
 627         enum auth_method         auth_method;
 628         uint16_t                 holdtime;
 629         time_t                   uptime;
 630         int                      nbr_state;
 631         struct ldp_stats         stats;
 632         int                      flags;
 633 };
 634
 635 struct ctl_rt {
 636         int                      af;
 637         union ldpd_addr          prefix;
 638         uint8_t                  prefixlen;
 639         struct in_addr           nexthop;       /* lsr-id */
 640         uint32_t                 local_label;
 641         uint32_t                 remote_label;
 642         uint8_t                  flags;
 643         uint8_t                  in_use;
 644         int                      no_downstream;
 645 };
 646
 647 struct ctl_pw {
 648         uint16_t                 type;
 649         char                     l2vpn_name[L2VPN_NAME_LEN];
 650         char                     ifname[IF_NAMESIZE];
 651         uint32_t                 pwid;
 652         struct in_addr           lsr_id;
 653         uint32_t                 local_label;
 654         uint32_t                 local_gid;
 655         uint16_t                 local_ifmtu;
 656         uint8_t                  local_cword;
 657         uint32_t                 remote_label;
 658         uint32_t                 remote_gid;
 659         uint16_t                 remote_ifmtu;
 660         uint8_t                  remote_cword;
 661         uint32_t                 status;
 662 };
 663
 664 extern struct ldpd_conf         *ldpd_conf, *vty_conf;
 665 extern struct ldpd_global        global;
 666 extern struct ldpd_init          init;
 667
 668 /* parse.y */
 669 struct ldpd_conf        *parse_config(char *);
 670 int                      cmdline_symset(char *);
 671
 672 /* kroute.c */
 673 void             kif_redistribute(const char *);
 674 int              kr_change(struct kroute *);
 675 int              kr_delete(struct kroute *);
 676 int              kmpw_set(struct kpw *);
 677 int              kmpw_unset(struct kpw *);
 678
 679 /* util.c */
 680 uint8_t          mask2prefixlen(in_addr_t);
 681 uint8_t          mask2prefixlen6(struct sockaddr_in6 *);
 682 in_addr_t        prefixlen2mask(uint8_t);
 683 struct in6_addr *prefixlen2mask6(uint8_t);
 684 void             ldp_applymask(int, union ldpd_addr *,
 685                     const union ldpd_addr *, int);
 686 int              ldp_addrcmp(int, const union ldpd_addr *,
 687                     const union ldpd_addr *);
 688 int              ldp_addrisset(int, const union ldpd_addr *);
 689 int              ldp_prefixcmp(int, const union ldpd_addr *,
 690                     const union ldpd_addr *, uint8_t);
 691 int              bad_addr_v4(struct in_addr);
 692 int              bad_addr_v6(struct in6_addr *);
 693 int              bad_addr(int, union ldpd_addr *);
 694 void             embedscope(struct sockaddr_in6 *);
 695 void             recoverscope(struct sockaddr_in6 *);
 696 void             addscope(struct sockaddr_in6 *, uint32_t);
 697 void             clearscope(struct in6_addr *);
 698 struct sockaddr *addr2sa(int af, union ldpd_addr *, uint16_t);
 699 void             sa2addr(struct sockaddr *, int *, union ldpd_addr *,
 700                     in_port_t *);
 701 socklen_t        sockaddr_len(struct sockaddr *);
 702
 703 /* ldpd.c */
 704 int                      ldp_write_handler(struct thread *);
 705 void                     main_imsg_compose_ldpe(int, pid_t, void *, uint16_t);
 706 void                     main_imsg_compose_lde(int, pid_t, void *, uint16_t);
 707 int                      main_imsg_compose_both(enum imsg_type, void *,
 708                             uint16_t);
 709 void                     imsg_event_add(struct imsgev *);
 710 int                      imsg_compose_event(struct imsgev *, uint16_t, uint32_t,
 711                             pid_t, int, void *, uint16_t);
 712 void                     evbuf_enqueue(struct evbuf *, struct ibuf *);
 713 void                     evbuf_event_add(struct evbuf *);
 714 void                     evbuf_init(struct evbuf *, int,
 715                             int (*)(struct thread *), void *);
 716 void                     evbuf_clear(struct evbuf *);
 717 int                      ldp_acl_request(struct imsgev *, char *, int,
 718                             union ldpd_addr *, uint8_t);
 719 void                     ldp_acl_reply(struct imsgev *, struct acl_check *);
 720 struct ldpd_af_conf     *ldp_af_conf_get(struct ldpd_conf *, int);
 721 struct ldpd_af_global   *ldp_af_global_get(struct ldpd_global *, int);
 722 int                      ldp_is_dual_stack(struct ldpd_conf *);
 723 in_addr_t                ldp_rtr_id_get(struct ldpd_conf *);
 724 int                      ldp_reload(struct ldpd_conf *);
 725 void                     ldp_clear_config(struct ldpd_conf *);
 726 void                     merge_config(struct ldpd_conf *, struct ldpd_conf *);
 727 struct ldpd_conf        *config_new_empty(void);
 728 void                     config_clear(struct ldpd_conf *);
 729
 730 /* ldp_vty_conf.c */
 731 /* NOTE: the parameters' names should be preserved because of codegen */
 732 struct iface            *iface_new_api(struct ldpd_conf *conf,
 733                             const char *name);
 734 void                     iface_del_api(struct ldpd_conf *conf,
 735                             struct iface *iface);
 736 struct tnbr             *tnbr_new_api(struct ldpd_conf *conf, int af,
 737                             union ldpd_addr *addr);
 738 void                     tnbr_del_api(struct ldpd_conf *conf, struct tnbr *tnbr);
 739 struct nbr_params       *nbrp_new_api(struct ldpd_conf *conf,
 740                             struct in_addr lsr_id);
 741 void                     nbrp_del_api(struct ldpd_conf *conf,
 742                             struct nbr_params *nbrp);
 743 struct l2vpn            *l2vpn_new_api(struct ldpd_conf *conf, const char *name);
 744 void                     l2vpn_del_api(struct ldpd_conf *conf,
 745                             struct l2vpn *l2vpn);
 746 struct l2vpn_if         *l2vpn_if_new_api(struct ldpd_conf *conf,
 747                             struct l2vpn *l2vpn, const char *ifname);
 748 void                     l2vpn_if_del_api(struct l2vpn *l2vpn,
 749                            struct l2vpn_if *lif);
 750 struct l2vpn_pw         *l2vpn_pw_new_api(struct ldpd_conf *conf,
 751                             struct l2vpn *l2vpn, const char *ifname);
 752 void                     l2vpn_pw_del_api(struct l2vpn *l2vpn,
 753                             struct l2vpn_pw *pw);
 754
 755 /* socket.c */
 756 int              ldp_create_socket(int, enum socket_type);
 757 void             sock_set_nonblock(int);
 758 void             sock_set_cloexec(int);
 759 void             sock_set_recvbuf(int);
 760 int              sock_set_reuse(int, int);
 761 int              sock_set_bindany(int, int);
 762 int              sock_set_md5sig(int, int, union ldpd_addr *, const char *);
 763 int              sock_set_ipv4_tos(int, int);
 764 int              sock_set_ipv4_pktinfo(int, int);
 765 int              sock_set_ipv4_recvdstaddr(int, int);
 766 int              sock_set_ipv4_recvif(int, int);
 767 int              sock_set_ipv4_minttl(int, int);
 768 int              sock_set_ipv4_ucast_ttl(int fd, int);
 769 int              sock_set_ipv4_mcast_ttl(int, uint8_t);
 770 int              sock_set_ipv4_mcast(struct iface *);
 771 int              sock_set_ipv4_mcast_loop(int);
 772 int              sock_set_ipv6_dscp(int, int);
 773 int              sock_set_ipv6_pktinfo(int, int);
 774 int              sock_set_ipv6_minhopcount(int, int);
 775 int              sock_set_ipv6_ucast_hops(int, int);
 776 int              sock_set_ipv6_mcast_hops(int, int);
 777 int              sock_set_ipv6_mcast(struct iface *);
 778 int              sock_set_ipv6_mcast_loop(int);
 779
 780 /* logmsg.h */
 781 struct in6_addr;
 782 union ldpd_addr;
 783 struct hello_source;
 784 struct fec;
 785
 786 const char      *log_sockaddr(void *);
 787 const char      *log_in6addr(const struct in6_addr *);
 788 const char      *log_in6addr_scope(const struct in6_addr *, unsigned int);
 789 const char      *log_addr(int, const union ldpd_addr *);
 790 char            *log_label(uint32_t);
 791 const char      *log_time(time_t);
 792 char            *log_hello_src(const struct hello_source *);
 793 const char      *log_map(const struct map *);
 794 const char      *log_fec(const struct fec *);
 795 const char      *af_name(int);
 796 const char      *socket_name(int);
 797 const char      *nbr_state_name(int);
 798 const char      *if_state_name(int);
 799 const char      *if_type_name(enum iface_type);
 800 const char      *msg_name(uint16_t);
 801 const char      *status_code_name(uint32_t);
 802 const char      *pw_type_name(uint16_t);
 803
 804 /* quagga */
 805 extern struct thread_master     *master;
 806 extern char                      ctl_sock_path[MAXPATHLEN];
 807
 808 /* ldp_zebra.c */
 809 void             ldp_zebra_init(struct thread_master *);
 810 void             ldp_zebra_destroy(void);
 811
 812 /* compatibility */
 813 #ifndef __OpenBSD__
 814 #define __IPV6_ADDR_MC_SCOPE(a)         ((a)->s6_addr[1] & 0x0f)
 815 #define __IPV6_ADDR_SCOPE_INTFACELOCAL  0x01
 816 #define IN6_IS_ADDR_MC_INTFACELOCAL(a)  \
 817         (IN6_IS_ADDR_MULTICAST(a) &&    \
 818         (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_INTFACELOCAL))
 819 #endif
 820
 821 #endif  /* _LDPD_H_ */