ospfd/ospfd.h

   1 /*
   2  * OSPFd main header.
   3  * Copyright (C) 1998, 99, 2000 Kunihiro Ishiguro, Toshiaki Takada
   4  *
   5  * This file is part of GNU Zebra.
   6  *
   7  * GNU Zebra is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2, or (at your option) any
  10  * later version.
  11  *
  12  * GNU Zebra is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; see the file COPYING; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef _ZEBRA_OSPFD_H
  23 #define _ZEBRA_OSPFD_H
  24
  25 #include <zebra.h>
  26 #include "qobj.h"
  27 #include "libospf.h"
  28
  29 #include "filter.h"
  30 #include "log.h"
  31 #include "vrf.h"
  32
  33 #include "ospf_memory.h"
  34 #include "ospf_dump_api.h"
  35
  36 #define OSPF_VERSION            2
  37
  38 /* VTY port number. */
  39 #define OSPF_VTY_PORT          2604
  40
  41 /* IP TTL for OSPF protocol. */
  42 #define OSPF_IP_TTL             1
  43 #define OSPF_VL_IP_TTL          100
  44
  45 /* Default configuration file name for ospfd. */
  46 #define OSPF_DEFAULT_CONFIG   "ospfd.conf"
  47
  48 #define OSPF_NSSA_TRANS_STABLE_DEFAULT          40
  49
  50 #define OSPF_ALLSPFROUTERS              0xe0000005      /* 224.0.0.5 */
  51 #define OSPF_ALLDROUTERS                0xe0000006      /* 224.0.0.6 */
  52
  53 /* OSPF Authentication Type. */
  54 #define OSPF_AUTH_NULL                      0
  55 #define OSPF_AUTH_SIMPLE                    1
  56 #define OSPF_AUTH_CRYPTOGRAPHIC             2
  57 /* For Interface authentication setting default */
  58 #define OSPF_AUTH_NOTSET                   -1
  59 /* For the consumption and sanity of the command handler */
  60 /* DO NIOT REMOVE!!! Need to detect whether a value has
  61    been given or not in VLink command handlers */
  62 #define OSPF_AUTH_CMD_NOTSEEN              -2
  63
  64 /* OSPF options. */
  65 #define OSPF_OPTION_MT                   0x01  /* M/T */
  66 #define OSPF_OPTION_E                    0x02
  67 #define OSPF_OPTION_MC                   0x04
  68 #define OSPF_OPTION_NP                   0x08
  69 #define OSPF_OPTION_EA                   0x10
  70 #define OSPF_OPTION_DC                   0x20
  71 #define OSPF_OPTION_O                    0x40
  72 #define OSPF_OPTION_DN                   0x80
  73
  74 /* OSPF Database Description flags. */
  75 #define OSPF_DD_FLAG_MS                  0x01
  76 #define OSPF_DD_FLAG_M                   0x02
  77 #define OSPF_DD_FLAG_I                   0x04
  78 #define OSPF_DD_FLAG_ALL                 0x07
  79
  80 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
  81 #define OSPF_LS_REFRESH_JITTER      60
  82
  83 struct ospf_external {
  84         unsigned short instance;
  85         struct route_table *external_info;
  86 };
  87
  88 /* OSPF master for system wide configuration and variables. */
  89 struct ospf_master {
  90         /* OSPF instance. */
  91         struct list *ospf;
  92
  93         /* OSPF thread master. */
  94         struct thread_master *master;
  95
  96         /* Various OSPF global configuration. */
  97         uint8_t options;
  98 #define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
  99 };
 100
 101 struct ospf_redist {
 102         unsigned short instance;
 103
 104         /* Redistribute metric info. */
 105         struct {
 106                 int type;  /* External metric type (E1 or E2).  */
 107                 int value; /* Value for static metric (24-bit).
 108                               -1 means metric value is not set. */
 109         } dmetric;
 110
 111         /* For redistribute route map. */
 112         struct {
 113                 char *name;
 114                 struct route_map *map;
 115         } route_map; /* +1 is for default-information */
 116 #define ROUTEMAP_NAME(R)   (R->route_map.name)
 117 #define ROUTEMAP(R)        (R->route_map.map)
 118 };
 119
 120 /* OSPF instance structure. */
 121 struct ospf {
 122         /* OSPF's running state based on the '[no] router ospf [<instance>]'
 123          * config. */
 124         uint8_t oi_running;
 125
 126         /* OSPF instance ID  */
 127         unsigned short instance;
 128
 129         /* OSPF Router ID. */
 130         struct in_addr router_id;       /* Configured automatically. */
 131         struct in_addr router_id_static; /* Configured manually. */
 132         struct in_addr router_id_zebra;
 133
 134         vrf_id_t vrf_id; /* VRF Id */
 135         char *name;      /* VRF name */
 136
 137         /* ABR/ASBR internal flags. */
 138         uint8_t flags;
 139 #define OSPF_FLAG_ABR           0x0001
 140 #define OSPF_FLAG_ASBR          0x0002
 141
 142         /* ABR type. */
 143         uint8_t abr_type;
 144 #define OSPF_ABR_UNKNOWN        0
 145 #define OSPF_ABR_STAND          1
 146 #define OSPF_ABR_IBM            2
 147 #define OSPF_ABR_CISCO          3
 148 #define OSPF_ABR_SHORTCUT       4
 149 #define OSPF_ABR_DEFAULT        OSPF_ABR_CISCO
 150
 151         /* NSSA ABR */
 152         uint8_t anyNSSA; /* Bump for every NSSA attached. */
 153
 154         /* Configured variables. */
 155         uint8_t config;
 156 #define OSPF_RFC1583_COMPATIBLE         (1 << 0)
 157 #define OSPF_OPAQUE_CAPABLE             (1 << 2)
 158 #define OSPF_LOG_ADJACENCY_CHANGES      (1 << 3)
 159 #define OSPF_LOG_ADJACENCY_DETAIL       (1 << 4)
 160
 161         /* Opaque-LSA administrative flags. */
 162         uint8_t opaque;
 163 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 164
 165         /* RFC3137 stub router. Configured time to stay stub / max-metric */
 166         unsigned int stub_router_startup_time;  /* seconds */
 167         unsigned int stub_router_shutdown_time; /* seconds */
 168 #define OSPF_STUB_ROUTER_UNCONFIGURED     0
 169         uint8_t stub_router_admin_set;
 170 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_SET     1
 171 #define OSPF_STUB_ROUTER_ADMINISTRATIVE_UNSET   0
 172
 173 #define OSPF_STUB_MAX_METRIC_SUMMARY_COST       0x00ff0000
 174
 175         /* LSA timers */
 176         unsigned int min_ls_interval; /* minimum delay between LSAs (in msec) */
 177         unsigned int min_ls_arrival;  /* minimum interarrival time between LSAs
 178                                          (in msec) */
 179
 180         /* SPF parameters */
 181         unsigned int spf_delay; /* SPF delay time. */
 182         unsigned int spf_holdtime;     /* SPF hold time. */
 183         unsigned int spf_max_holdtime; /* SPF maximum-holdtime */
 184         unsigned int
 185                 spf_hold_multiplier; /* Adaptive multiplier for hold time */
 186
 187         int default_originate;  /* Default information originate. */
 188 #define DEFAULT_ORIGINATE_NONE          0
 189 #define DEFAULT_ORIGINATE_ZEBRA         1
 190 #define DEFAULT_ORIGINATE_ALWAYS        2
 191         uint32_t ref_bandwidth;       /* Reference Bandwidth (Kbps). */
 192         struct route_table *networks; /* OSPF config networks. */
 193         struct list *vlinks;      /* Configured Virtual-Links. */
 194         struct list *areas;        /* OSPF areas. */
 195         struct route_table *nbr_nbma;
 196         struct ospf_area *backbone; /* Pointer to the Backbone Area. */
 197
 198         struct list *oiflist;             /* ospf interfaces */
 199         uint8_t passive_interface_default; /* passive-interface default */
 200
 201         /* LSDB of AS-external-LSAs. */
 202         struct ospf_lsdb *lsdb;
 203
 204         /* Flags. */
 205         int ase_calc;   /* ASE calculation flag. */
 206
 207         struct list *opaque_lsa_self; /* Type-11 Opaque-LSAs */
 208
 209         /* Routing tables. */
 210         struct route_table *old_table; /* Old routing table. */
 211         struct route_table *new_table; /* Current routing table. */
 212
 213         struct route_table *old_rtrs; /* Old ABR/ASBR RT. */
 214         struct route_table *new_rtrs; /* New ABR/ASBR RT. */
 215
 216         struct route_table *new_external_route; /* New External Route. */
 217         struct route_table *old_external_route; /* Old External Route. */
 218
 219         struct route_table *external_lsas; /* Database of external LSAs,
 220                                               prefix is LSA's adv. network*/
 221
 222         /* Time stamps */
 223         struct timeval ts_spf;          /* SPF calculation time stamp. */
 224         struct timeval ts_spf_duration; /* Execution time of last SPF */
 225
 226         struct route_table *maxage_lsa; /* List of MaxAge LSA for deletion. */
 227         int redistribute;               /* Num of redistributed protocols. */
 228
 229         /* Threads. */
 230         struct thread *t_abr_task;        /* ABR task timer. */
 231         struct thread *t_asbr_check;    /* ASBR check timer. */
 232         struct thread *t_distribute_update; /* Distirbute list update timer. */
 233         struct thread *t_spf_calc;        /* SPF calculation timer. */
 234         struct thread *t_ase_calc;        /* ASE calculation timer. */
 235         struct thread
 236                 *t_opaque_lsa_self; /* Type-11 Opaque-LSAs origin event. */
 237         struct thread *t_sr_update; /* Segment Routing update timer */
 238
 239         unsigned int maxage_delay;      /* Delay on Maxage remover timer, sec */
 240         struct thread *t_maxage;        /* MaxAge LSA remover timer. */
 241         struct thread *t_maxage_walker; /* MaxAge LSA checking timer. */
 242
 243         struct thread
 244                 *t_deferred_shutdown; /* deferred/stub-router shutdown timer*/
 245
 246         struct thread *t_write;
 247 #define OSPF_WRITE_INTERFACE_COUNT_DEFAULT    20
 248         int write_oi_count; /* Num of packets sent per thread invocation */
 249         struct thread *t_read;
 250         int fd;
 251         struct stream *ibuf;
 252         struct list *oi_write_q;
 253
 254         /* Distribute lists out of other route sources. */
 255         struct {
 256                 char *name;
 257                 struct access_list *list;
 258         } dlist[ZEBRA_ROUTE_MAX];
 259 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 260 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 261
 262         /* OSPF redistribute configuration */
 263         struct list *redist[ZEBRA_ROUTE_MAX + 1];
 264
 265         /* Redistribute tag info. */
 266         route_tag_t
 267                 dtag[ZEBRA_ROUTE_MAX + 1]; // Pending: cant configure as of now
 268
 269         int default_metric; /* Default metric for redistribute. */
 270
 271 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 272 #define OSPF_LSA_REFRESHER_SLOTS                                               \
 273         ((OSPF_LS_REFRESH_TIME + OSPF_LS_REFRESH_SHIFT)                        \
 274                  / OSPF_LSA_REFRESHER_GRANULARITY                              \
 275          + 1)
 276         struct {
 277                 uint16_t index;
 278                 struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 279         } lsa_refresh_queue;
 280
 281         struct thread *t_lsa_refresher;
 282         time_t lsa_refresher_started;
 283 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 284         uint16_t lsa_refresh_interval;
 285
 286         /* Distance parameter. */
 287         uint8_t distance_all;
 288         uint8_t distance_intra;
 289         uint8_t distance_inter;
 290         uint8_t distance_external;
 291
 292         /* Statistics for LSA origination. */
 293         uint32_t lsa_originate_count;
 294
 295         /* Statistics for LSA used for new instantiation. */
 296         uint32_t rx_lsa_count;
 297
 298         /* Counter of "ip ospf area x.x.x.x" used
 299          * for multual exclusion of network command under
 300          * router ospf or ip ospf area x under interface. */
 301         uint32_t if_ospf_cli_count;
 302
 303         struct route_table *distance_table;
 304
 305         /* Used during ospf instance going down send LSDB
 306          * update to neighbors immediatly */
 307         uint8_t inst_shutdown;
 308
 309         /* Redistributed external information. */
 310         struct list *external[ZEBRA_ROUTE_MAX + 1];
 311 #define EXTERNAL_INFO(E)      (E->external_info)
 312
 313         QOBJ_FIELDS
 314 };
 315 DECLARE_QOBJ_TYPE(ospf)
 316
 317 /* OSPF area structure. */
 318 struct ospf_area {
 319         /* OSPF instance. */
 320         struct ospf *ospf;
 321
 322         /* Zebra interface list belonging to the area. */
 323         struct list *oiflist;
 324
 325         /* Area ID. */
 326         struct in_addr area_id;
 327
 328         /* Area ID format. */
 329         int area_id_fmt;
 330 #define OSPF_AREA_ID_FMT_DOTTEDQUAD     1
 331 #define OSPF_AREA_ID_FMT_DECIMAL        2
 332
 333         /* Address range. */
 334         struct list *address_range;
 335
 336         /* Configured variables. */
 337         int external_routing;    /* ExternalRoutingCapability. */
 338         int no_summary;          /* Don't inject summaries into stub.*/
 339         int shortcut_configured; /* Area configured as shortcut. */
 340 #define OSPF_SHORTCUT_DEFAULT   0
 341 #define OSPF_SHORTCUT_ENABLE    1
 342 #define OSPF_SHORTCUT_DISABLE   2
 343         int shortcut_capability; /* Other ABRs agree on S-bit */
 344         uint32_t default_cost;   /* StubDefaultCost. */
 345         int auth_type;           /* Authentication type. */
 346
 347
 348         uint8_t NSSATranslatorRole; /* NSSA configured role */
 349 #define OSPF_NSSA_ROLE_NEVER     0
 350 #define OSPF_NSSA_ROLE_CANDIDATE 1
 351 #define OSPF_NSSA_ROLE_ALWAYS    2
 352         uint8_t NSSATranslatorState; /* NSSA operational role */
 353 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 354 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 355         int NSSATranslatorStabilityInterval;
 356
 357         uint8_t transit; /* TransitCapability. */
 358 #define OSPF_TRANSIT_FALSE      0
 359 #define OSPF_TRANSIT_TRUE       1
 360         struct route_table *ranges; /* Configured Area Ranges. */
 361
 362         /* RFC3137 stub router state flags for area */
 363         uint8_t stub_router_state;
 364 #define OSPF_AREA_ADMIN_STUB_ROUTED     (1 << 0) /* admin stub-router set */
 365 #define OSPF_AREA_IS_STUB_ROUTED        (1 << 1) /* stub-router active */
 366 #define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
 367         /* Area related LSDBs[Type1-4]. */
 368         struct ospf_lsdb *lsdb;
 369
 370         /* Self-originated LSAs. */
 371         struct ospf_lsa *router_lsa_self;
 372         struct list *opaque_lsa_self; /* Type-10 Opaque-LSAs */
 373
 374         /* Area announce list. */
 375         struct {
 376                 char *name;
 377                 struct access_list *list;
 378         } _export;
 379 #define EXPORT_NAME(A)  (A)->_export.name
 380 #define EXPORT_LIST(A)  (A)->_export.list
 381
 382         /* Area acceptance list. */
 383         struct {
 384                 char *name;
 385                 struct access_list *list;
 386         } import;
 387 #define IMPORT_NAME(A)  (A)->import.name
 388 #define IMPORT_LIST(A)  (A)->import.list
 389
 390         /* Type 3 LSA Area prefix-list. */
 391         struct {
 392                 char *name;
 393                 struct prefix_list *list;
 394         } plist_in;
 395 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 396 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 397
 398         struct {
 399                 char *name;
 400                 struct prefix_list *list;
 401         } plist_out;
 402 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 403 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 404
 405         /* Shortest Path Tree. */
 406         struct vertex *spf;
 407
 408         /* Threads. */
 409         struct thread *t_stub_router;     /* Stub-router timer */
 410         struct thread *t_opaque_lsa_self; /* Type-10 Opaque-LSAs origin. */
 411
 412         /* Statistics field. */
 413         uint32_t spf_calculation; /* SPF Calculation Count. */
 414
 415         /* Time stamps. */
 416         struct timeval ts_spf; /* SPF calculation time stamp. */
 417
 418         /* Router count. */
 419         uint32_t abr_count;  /* ABR router in this area. */
 420         uint32_t asbr_count; /* ASBR router in this area. */
 421
 422         /* Counters. */
 423         uint32_t act_ints;  /* Active interfaces. */
 424         uint32_t full_nbrs; /* Fully adjacent neighbors. */
 425         uint32_t full_vls;  /* Fully adjacent virtual neighbors. */
 426 };
 427
 428 /* OSPF config network structure. */
 429 struct ospf_network {
 430         /* Area ID. */
 431         struct in_addr area_id;
 432         int area_id_fmt;
 433 };
 434
 435 /* OSPF NBMA neighbor structure. */
 436 struct ospf_nbr_nbma {
 437         /* Neighbor IP address. */
 438         struct in_addr addr;
 439
 440         /* OSPF interface. */
 441         struct ospf_interface *oi;
 442
 443         /* OSPF neighbor structure. */
 444         struct ospf_neighbor *nbr;
 445
 446         /* Neighbor priority. */
 447         uint8_t priority;
 448
 449         /* Poll timer value. */
 450         uint32_t v_poll;
 451
 452         /* Poll timer thread. */
 453         struct thread *t_poll;
 454
 455         /* State change. */
 456         uint32_t state_change;
 457 };
 458
 459 /* Macro. */
 460 #define OSPF_AREA_SAME(X, Y)                                                   \
 461         (memcmp((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 462
 463 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 464 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 465
 466 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 467 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 468
 469 #ifdef roundup
 470 #  define ROUNDUP(val, gran)    roundup(val, gran)
 471 #else  /* roundup */
 472 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 473 #endif /* roundup */
 474
 475 #define LSA_OPTIONS_GET(area)                                                  \
 476         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 477 #define LSA_OPTIONS_NSSA_GET(area)                                             \
 478         (((area)->external_routing == OSPF_AREA_NSSA) ? OSPF_OPTION_NP : 0)
 479
 480 #define OSPF_TIMER_ON(T,F,V) thread_add_timer (master,(F),ospf,(V),&(T))
 481 #define OSPF_AREA_TIMER_ON(T,F,V) thread_add_timer (master, (F), area, (V), &(T))
 482 #define OSPF_POLL_TIMER_ON(T,F,V) thread_add_timer (master, (F), nbr_nbma, (V), &(T))
 483 #define OSPF_POLL_TIMER_OFF(X) OSPF_TIMER_OFF((X))
 484 #define OSPF_TIMER_OFF(X)                                                      \
 485         do {                                                                   \
 486                 if (X) {                                                       \
 487                         thread_cancel(X);                                      \
 488                         (X) = NULL;                                            \
 489                 }                                                              \
 490         } while (0)
 491
 492 /* Extern variables. */
 493 extern struct ospf_master *om;
 494 extern const int ospf_redistributed_proto_max;
 495 extern struct zclient *zclient;
 496 extern struct thread_master *master;
 497 extern int ospf_zlog;
 498 extern struct zebra_privs_t ospfd_privs;
 499
 500 /* Prototypes. */
 501 extern const char *ospf_redist_string(unsigned int route_type);
 502 extern struct ospf *ospf_lookup_instance(unsigned short);
 503 extern struct ospf *ospf_get(unsigned short instance, const char *name);
 504 extern struct ospf *ospf_get_instance(unsigned short);
 505 extern struct ospf *ospf_lookup_by_inst_name(unsigned short instance,
 506                                              const char *name);
 507 extern struct ospf *ospf_lookup_by_vrf_id(vrf_id_t vrf_id);
 508 extern void ospf_finish(struct ospf *);
 509 extern void ospf_router_id_update(struct ospf *ospf);
 510 extern int ospf_network_set(struct ospf *, struct prefix_ipv4 *, struct in_addr,
 511                             int);
 512 extern int ospf_network_unset(struct ospf *, struct prefix_ipv4 *,
 513                               struct in_addr);
 514 extern int ospf_area_display_format_set(struct ospf *, struct ospf_area *area,
 515                                         int df);
 516 extern int ospf_area_stub_set(struct ospf *, struct in_addr);
 517 extern int ospf_area_stub_unset(struct ospf *, struct in_addr);
 518 extern int ospf_area_no_summary_set(struct ospf *, struct in_addr);
 519 extern int ospf_area_no_summary_unset(struct ospf *, struct in_addr);
 520 extern int ospf_area_nssa_set(struct ospf *, struct in_addr);
 521 extern int ospf_area_nssa_unset(struct ospf *, struct in_addr, int);
 522 extern int ospf_area_nssa_translator_role_set(struct ospf *, struct in_addr,
 523                                               int);
 524 extern int ospf_area_export_list_set(struct ospf *, struct ospf_area *,
 525                                      const char *);
 526 extern int ospf_area_export_list_unset(struct ospf *, struct ospf_area *);
 527 extern int ospf_area_import_list_set(struct ospf *, struct ospf_area *,
 528                                      const char *);
 529 extern int ospf_area_import_list_unset(struct ospf *, struct ospf_area *);
 530 extern int ospf_area_shortcut_set(struct ospf *, struct ospf_area *, int);
 531 extern int ospf_area_shortcut_unset(struct ospf *, struct ospf_area *);
 532 extern int ospf_timers_refresh_set(struct ospf *, int);
 533 extern int ospf_timers_refresh_unset(struct ospf *);
 534 extern int ospf_nbr_nbma_set(struct ospf *, struct in_addr);
 535 extern int ospf_nbr_nbma_unset(struct ospf *, struct in_addr);
 536 extern int ospf_nbr_nbma_priority_set(struct ospf *, struct in_addr, uint8_t);
 537 extern int ospf_nbr_nbma_priority_unset(struct ospf *, struct in_addr);
 538 extern int ospf_nbr_nbma_poll_interval_set(struct ospf *, struct in_addr,
 539                                            unsigned int);
 540 extern int ospf_nbr_nbma_poll_interval_unset(struct ospf *, struct in_addr);
 541 extern void ospf_prefix_list_update(struct prefix_list *);
 542 extern void ospf_init(void);
 543 extern void ospf_if_update(struct ospf *, struct interface *);
 544 extern void ospf_ls_upd_queue_empty(struct ospf_interface *);
 545 extern void ospf_terminate(void);
 546 extern void ospf_nbr_nbma_if_update(struct ospf *, struct ospf_interface *);
 547 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup(struct ospf *,
 548                                                   struct in_addr);
 549 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next(struct ospf *,
 550                                                        struct in_addr *, int);
 551 extern int ospf_oi_count(struct interface *);
 552
 553 extern struct ospf_area *ospf_area_get(struct ospf *, struct in_addr);
 554 extern void ospf_area_check_free(struct ospf *, struct in_addr);
 555 extern struct ospf_area *ospf_area_lookup_by_area_id(struct ospf *,
 556                                                      struct in_addr);
 557 extern void ospf_area_add_if(struct ospf_area *, struct ospf_interface *);
 558 extern void ospf_area_del_if(struct ospf_area *, struct ospf_interface *);
 559
 560 extern void ospf_interface_area_set(struct ospf *, struct interface *);
 561 extern void ospf_interface_area_unset(struct ospf *, struct interface *);
 562 extern bool ospf_interface_area_is_already_set(struct ospf *ospf,
 563                                                struct interface *ifp);
 564
 565 extern void ospf_route_map_init(void);
 566
 567 extern void ospf_master_init(struct thread_master *master);
 568 extern void ospf_vrf_init(void);
 569 extern void ospf_vrf_terminate(void);
 570 extern void ospf_vrf_link(struct ospf *ospf, struct vrf *vrf);
 571 extern void ospf_vrf_unlink(struct ospf *ospf, struct vrf *vrf);
 572 const char *ospf_vrf_id_to_name(vrf_id_t vrf_id);
 573 int ospf_area_nssa_no_summary_set(struct ospf *, struct in_addr);
 574
 575 const char *ospf_get_name(const struct ospf *ospf);
 576 #endif /* _ZEBRA_OSPFD_H */