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
  18  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  19  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20  * 02111-1307, USA.
  21  */
  22
  23 #ifndef _ZEBRA_OSPFD_H
  24 #define _ZEBRA_OSPFD_H
  25
  26 #include <zebra.h>
  27
  28 #include "filter.h"
  29 #include "log.h"
  30
  31 #define OSPF_VERSION            2
  32
  33 /* Default protocol, port number. */
  34 #ifndef IPPROTO_OSPFIGP
  35 #define IPPROTO_OSPFIGP         89
  36 #endif /* IPPROTO_OSPFIGP */
  37
  38 /* IP precedence. */
  39 #ifndef IPTOS_PREC_INTERNETCONTROL
  40 #define IPTOS_PREC_INTERNETCONTROL      0xC0
  41 #endif /* IPTOS_PREC_INTERNETCONTROL */
  42
  43 /* VTY port number. */
  44 #define OSPF_VTY_PORT          2604
  45
  46 /* IP TTL for OSPF protocol. */
  47 #define OSPF_IP_TTL             1
  48 #define OSPF_VL_IP_TTL          100
  49
  50 /* Default configuration file name for ospfd. */
  51 #define OSPF_DEFAULT_CONFIG   "ospfd.conf"
  52
  53 /* Architectual Constants */
  54 #ifdef DEBUG
  55 #define OSPF_LS_REFRESH_TIME                    60
  56 #else
  57 #define OSPF_LS_REFRESH_TIME                  1800
  58 #endif
  59 #define OSPF_MIN_LS_INTERVAL                     5
  60 #define OSPF_MIN_LS_ARRIVAL                      1
  61 #define OSPF_LSA_MAXAGE                       3600
  62 #define OSPF_CHECK_AGE                         300
  63 #define OSPF_LSA_MAXAGE_DIFF                   900
  64 #define OSPF_LS_INFINITY                  0xffffff
  65 #define OSPF_DEFAULT_DESTINATION        0x00000000      /* 0.0.0.0 */
  66 #define OSPF_INITIAL_SEQUENCE_NUMBER    0x80000001
  67 #define OSPF_MAX_SEQUENCE_NUMBER        0x7fffffff
  68
  69 #define OSPF_LSA_MAXAGE_CHECK_INTERVAL          30
  70 #define OSPF_NSSA_TRANS_STABLE_DEFAULT          40
  71
  72 #define OSPF_ALLSPFROUTERS              0xe0000005      /* 224.0.0.5 */
  73 #define OSPF_ALLDROUTERS                0xe0000006      /* 224.0.0.6 */
  74
  75 /* XXX Where is this used? And why it was used only if compiled with
  76  * NSSA support. */
  77 #define OSPF_LOOPer                     0x7f000000      /* 127.0.0.0 */
  78
  79 #define OSPF_AREA_BACKBONE              0x00000000      /* 0.0.0.0 */
  80
  81 /* OSPF Authentication Type. */
  82 #define OSPF_AUTH_NULL                      0
  83 #define OSPF_AUTH_SIMPLE                    1
  84 #define OSPF_AUTH_CRYPTOGRAPHIC             2
  85 /* For Interface authentication setting default */
  86 #define OSPF_AUTH_NOTSET                   -1
  87 /* For the consumption and sanity of the command handler */
  88 /* DO NIOT REMOVE!!! Need to detect whether a value has
  89    been given or not in VLink command handlers */
  90 #define OSPF_AUTH_CMD_NOTSEEN              -2
  91
  92 /* OSPF SPF timer values. */
  93 #define OSPF_SPF_DELAY_DEFAULT              200
  94 #define OSPF_SPF_HOLDTIME_DEFAULT           1000
  95 #define OSPF_SPF_MAX_HOLDTIME_DEFAULT       10000
  96
  97 /* OSPF interface default values. */
  98 #define OSPF_OUTPUT_COST_DEFAULT           10
  99 #define OSPF_OUTPUT_COST_INFINITE          UINT16_MAX
 100 #define OSPF_ROUTER_DEAD_INTERVAL_DEFAULT  40
 101 #define OSPF_ROUTER_DEAD_INTERVAL_MINIMAL   1
 102 #define OSPF_HELLO_INTERVAL_DEFAULT        10
 103 #define OSPF_ROUTER_PRIORITY_DEFAULT        1
 104 #define OSPF_RETRANSMIT_INTERVAL_DEFAULT    5
 105 #define OSPF_TRANSMIT_DELAY_DEFAULT         1
 106 #define OSPF_DEFAULT_BANDWIDTH           10000  /* Kbps */
 107
 108 #define OSPF_DEFAULT_REF_BANDWIDTH      100000  /* Kbps */
 109
 110 #define OSPF_POLL_INTERVAL_DEFAULT         60
 111 #define OSPF_NEIGHBOR_PRIORITY_DEFAULT      0
 112
 113 #define OSPF_MTU_IGNORE_DEFAULT             0
 114 #define OSPF_FAST_HELLO_DEFAULT             0
 115
 116 /* OSPF options. */
 117 #define OSPF_OPTION_T                    0x01  /* TOS. */
 118 #define OSPF_OPTION_E                    0x02
 119 #define OSPF_OPTION_MC                   0x04
 120 #define OSPF_OPTION_NP                   0x08
 121 #define OSPF_OPTION_EA                   0x10
 122 #define OSPF_OPTION_DC                   0x20
 123 #define OSPF_OPTION_O                    0x40
 124
 125 /* OSPF Database Description flags. */
 126 #define OSPF_DD_FLAG_MS                  0x01
 127 #define OSPF_DD_FLAG_M                   0x02
 128 #define OSPF_DD_FLAG_I                   0x04
 129 #define OSPF_DD_FLAG_ALL                 0x07
 130
 131 #define OSPF_LS_REFRESH_SHIFT       (60 * 15)
 132 #define OSPF_LS_REFRESH_JITTER      60
 133
 134 /* OSPF master for system wide configuration and variables. */
 135 struct ospf_master
 136 {
 137   /* OSPF instance. */
 138   struct list *ospf;
 139
 140   /* OSPF thread master. */
 141   struct thread_master *master;
 142
 143   /* Zebra interface list. */
 144   struct list *iflist;
 145
 146   /* Redistributed external information. */
 147   struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
 148 #define EXTERNAL_INFO(T)      om->external_info[T]
 149
 150   /* OSPF start time. */
 151   time_t start_time;
 152
 153   /* Various OSPF global configuration. */
 154   u_char options;
 155 #define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
 156 };
 157
 158 /* OSPF instance structure. */
 159 struct ospf
 160 {
 161   /* OSPF Router ID. */
 162   struct in_addr router_id;             /* Configured automatically. */
 163   struct in_addr router_id_static;      /* Configured manually. */
 164
 165   /* ABR/ASBR internal flags. */
 166   u_char flags;
 167 #define OSPF_FLAG_ABR           0x0001
 168 #define OSPF_FLAG_ASBR          0x0002
 169
 170   /* ABR type. */
 171   u_char abr_type;
 172 #define OSPF_ABR_UNKNOWN        0
 173 #define OSPF_ABR_STAND          1
 174 #define OSPF_ABR_IBM            2
 175 #define OSPF_ABR_CISCO          3
 176 #define OSPF_ABR_SHORTCUT       4
 177 #define OSPF_ABR_DEFAULT        OSPF_ABR_CISCO
 178
 179   /* NSSA ABR */
 180   u_char anyNSSA;               /* Bump for every NSSA attached. */
 181
 182   /* Configured variables. */
 183   u_char config;
 184 #define OSPF_RFC1583_COMPATIBLE         (1 << 0)
 185 #define OSPF_OPAQUE_CAPABLE             (1 << 2)
 186 #define OSPF_LOG_ADJACENCY_CHANGES      (1 << 3)
 187 #define OSPF_LOG_ADJACENCY_DETAIL       (1 << 4)
 188
 189 #ifdef HAVE_OPAQUE_LSA
 190   /* Opaque-LSA administrative flags. */
 191   u_char opaque;
 192 #define OPAQUE_OPERATION_READY_BIT      (1 << 0)
 193 #define OPAQUE_BLOCK_TYPE_09_LSA_BIT    (1 << 1)
 194 #define OPAQUE_BLOCK_TYPE_10_LSA_BIT    (1 << 2)
 195 #define OPAQUE_BLOCK_TYPE_11_LSA_BIT    (1 << 3)
 196 #endif /* HAVE_OPAQUE_LSA */
 197
 198   /* RFC3137 stub router. Configured time to stay stub / max-metric */
 199   unsigned int stub_router_startup_time;        /* seconds */
 200   unsigned int stub_router_shutdown_time;       /* seconds */
 201 #define OSPF_STUB_ROUTER_UNCONFIGURED     0
 202
 203   /* SPF parameters */
 204   unsigned int spf_delay;               /* SPF delay time. */
 205   unsigned int spf_holdtime;            /* SPF hold time. */
 206   unsigned int spf_max_holdtime;        /* SPF maximum-holdtime */
 207   unsigned int spf_hold_multiplier;     /* Adaptive multiplier for hold time */
 208
 209   int default_originate;                /* Default information originate. */
 210 #define DEFAULT_ORIGINATE_NONE          0
 211 #define DEFAULT_ORIGINATE_ZEBRA         1
 212 #define DEFAULT_ORIGINATE_ALWAYS        2
 213   u_int32_t ref_bandwidth;              /* Reference Bandwidth (Kbps). */
 214   struct route_table *networks;         /* OSPF config networks. */
 215   struct list *vlinks;                  /* Configured Virtual-Links. */
 216   struct list *areas;                   /* OSPF areas. */
 217   struct route_table *nbr_nbma;
 218   struct ospf_area *backbone;           /* Pointer to the Backbone Area. */
 219
 220   struct list *oiflist;                 /* ospf interfaces */
 221   u_char passive_interface_default;     /* passive-interface default */
 222
 223   /* LSDB of AS-external-LSAs. */
 224   struct ospf_lsdb *lsdb;
 225
 226   /* Flags. */
 227   int external_origin;                  /* AS-external-LSA origin flag. */
 228   int ase_calc;                         /* ASE calculation flag. */
 229
 230 #ifdef HAVE_OPAQUE_LSA
 231   struct list *opaque_lsa_self;         /* Type-11 Opaque-LSAs */
 232 #endif /* HAVE_OPAQUE_LSA */
 233
 234   /* Routing tables. */
 235   struct route_table *old_table;        /* Old routing table. */
 236   struct route_table *new_table;        /* Current routing table. */
 237
 238   struct route_table *old_rtrs;         /* Old ABR/ASBR RT. */
 239   struct route_table *new_rtrs;         /* New ABR/ASBR RT. */
 240
 241   struct route_table *new_external_route;   /* New External Route. */
 242   struct route_table *old_external_route;   /* Old External Route. */
 243
 244   struct route_table *external_lsas;    /* Database of external LSAs,
 245                                            prefix is LSA's adv. network*/
 246
 247   /* Time stamps. */
 248   struct timeval ts_spf;                /* SPF calculation time stamp. */
 249
 250   struct list *maxage_lsa;              /* List of MaxAge LSA for deletion. */
 251   int redistribute;                     /* Num of redistributed protocols. */
 252
 253   /* Threads. */
 254   struct thread *t_router_lsa_update;   /* router-LSA update timer. */
 255   struct thread *t_abr_task;            /* ABR task timer. */
 256   struct thread *t_asbr_check;          /* ASBR check timer. */
 257   struct thread *t_distribute_update;   /* Distirbute list update timer. */
 258   struct thread *t_spf_calc;            /* SPF calculation timer. */
 259   struct thread *t_ase_calc;            /* ASE calculation timer. */
 260   struct thread *t_external_lsa;        /* AS-external-LSA origin timer. */
 261 #ifdef HAVE_OPAQUE_LSA
 262   struct thread *t_opaque_lsa_self;     /* Type-11 Opaque-LSAs origin event. */
 263 #endif /* HAVE_OPAQUE_LSA */
 264   struct thread *t_maxage;              /* MaxAge LSA remover timer. */
 265   struct thread *t_maxage_walker;       /* MaxAge LSA checking timer. */
 266   struct thread *t_deferred_shutdown;   /* deferred/stub-router shutdown timer*/
 267
 268   struct thread *t_write;
 269   struct thread *t_read;
 270   int fd;
 271   int maxsndbuflen;
 272   struct stream *ibuf;
 273   struct list *oi_write_q;
 274
 275   /* Distribute lists out of other route sources. */
 276   struct
 277   {
 278     char *name;
 279     struct access_list *list;
 280   } dlist[ZEBRA_ROUTE_MAX];
 281 #define DISTRIBUTE_NAME(O,T)    (O)->dlist[T].name
 282 #define DISTRIBUTE_LIST(O,T)    (O)->dlist[T].list
 283
 284   /* Redistribute metric info. */
 285   struct
 286   {
 287     int type;                   /* External metric type (E1 or E2).  */
 288     int value;                  /* Value for static metric (24-bit).
 289                                    -1 means metric value is not set. */
 290   } dmetric [ZEBRA_ROUTE_MAX + 1];
 291
 292   /* For redistribute route map. */
 293   struct
 294   {
 295     char *name;
 296     struct route_map *map;
 297   } route_map [ZEBRA_ROUTE_MAX + 1]; /* +1 is for default-information */
 298 #define ROUTEMAP_NAME(O,T)   (O)->route_map[T].name
 299 #define ROUTEMAP(O,T)        (O)->route_map[T].map
 300
 301   int default_metric;           /* Default metric for redistribute. */
 302
 303 #define OSPF_LSA_REFRESHER_GRANULARITY 10
 304 #define OSPF_LSA_REFRESHER_SLOTS ((OSPF_LS_REFRESH_TIME + \
 305                                   OSPF_LS_REFRESH_SHIFT)/10 + 1)
 306   struct
 307   {
 308     u_int16_t index;
 309     struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
 310   } lsa_refresh_queue;
 311
 312   struct thread *t_lsa_refresher;
 313   time_t lsa_refresher_started;
 314 #define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
 315   u_int16_t lsa_refresh_interval;
 316
 317   /* Distance parameter. */
 318   u_char distance_all;
 319   u_char distance_intra;
 320   u_char distance_inter;
 321   u_char distance_external;
 322
 323   /* Statistics for LSA origination. */
 324   u_int32_t lsa_originate_count;
 325
 326   /* Statistics for LSA used for new instantiation. */
 327   u_int32_t rx_lsa_count;
 328
 329   struct route_table *distance_table;
 330 };
 331
 332 /* OSPF area structure. */
 333 struct ospf_area
 334 {
 335   /* OSPF instance. */
 336   struct ospf *ospf;
 337
 338   /* Zebra interface list belonging to the area. */
 339   struct list *oiflist;
 340
 341   /* Area ID. */
 342   struct in_addr area_id;
 343
 344   /* Area ID format. */
 345   char format;
 346 #define OSPF_AREA_ID_FORMAT_ADDRESS         1
 347 #define OSPF_AREA_ID_FORMAT_DECIMAL         2
 348
 349   /* Address range. */
 350   struct list *address_range;
 351
 352   /* Configured variables. */
 353   int external_routing;                 /* ExternalRoutingCapability. */
 354 #define OSPF_AREA_DEFAULT       0
 355 #define OSPF_AREA_STUB          1
 356 #define OSPF_AREA_NSSA          2
 357 #define OSPF_AREA_TYPE_MAX      3
 358   int no_summary;                       /* Don't inject summaries into stub.*/
 359   int shortcut_configured;              /* Area configured as shortcut. */
 360 #define OSPF_SHORTCUT_DEFAULT   0
 361 #define OSPF_SHORTCUT_ENABLE    1
 362 #define OSPF_SHORTCUT_DISABLE   2
 363   int shortcut_capability;              /* Other ABRs agree on S-bit */
 364   u_int32_t default_cost;               /* StubDefaultCost. */
 365   int auth_type;                        /* Authentication type. */
 366
 367
 368   u_char NSSATranslatorRole;          /* NSSA configured role */
 369 #define OSPF_NSSA_ROLE_NEVER     0
 370 #define OSPF_NSSA_ROLE_CANDIDATE 1
 371 #define OSPF_NSSA_ROLE_ALWAYS    2
 372   u_char NSSATranslatorState;              /* NSSA operational role */
 373 #define OSPF_NSSA_TRANSLATE_DISABLED 0
 374 #define OSPF_NSSA_TRANSLATE_ENABLED  1
 375   int NSSATranslatorStabilityInterval;
 376
 377   u_char transit;                       /* TransitCapability. */
 378 #define OSPF_TRANSIT_FALSE      0
 379 #define OSPF_TRANSIT_TRUE       1
 380   struct route_table *ranges;           /* Configured Area Ranges. */
 381
 382   /* RFC3137 stub router state flags for area */
 383   u_char stub_router_state;
 384 #define OSPF_AREA_ADMIN_STUB_ROUTED     (1 << 0) /* admin stub-router set */
 385 #define OSPF_AREA_IS_STUB_ROUTED        (1 << 1) /* stub-router active */
 386 #define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
 387
 388   /* Area related LSDBs[Type1-4]. */
 389   struct ospf_lsdb *lsdb;
 390
 391   /* Self-originated LSAs. */
 392   struct ospf_lsa *router_lsa_self;
 393 #ifdef HAVE_OPAQUE_LSA
 394   struct list *opaque_lsa_self;         /* Type-10 Opaque-LSAs */
 395 #endif /* HAVE_OPAQUE_LSA */
 396
 397   /* Area announce list. */
 398   struct
 399   {
 400     char *name;
 401     struct access_list *list;
 402   } _export;
 403 #define EXPORT_NAME(A)  (A)->_export.name
 404 #define EXPORT_LIST(A)  (A)->_export.list
 405
 406   /* Area acceptance list. */
 407   struct
 408   {
 409     char *name;
 410     struct access_list *list;
 411   } import;
 412 #define IMPORT_NAME(A)  (A)->import.name
 413 #define IMPORT_LIST(A)  (A)->import.list
 414
 415   /* Type 3 LSA Area prefix-list. */
 416   struct
 417   {
 418     char *name;
 419     struct prefix_list *list;
 420   } plist_in;
 421 #define PREFIX_LIST_IN(A)   (A)->plist_in.list
 422 #define PREFIX_NAME_IN(A)   (A)->plist_in.name
 423
 424   struct
 425   {
 426     char *name;
 427     struct prefix_list *list;
 428   } plist_out;
 429 #define PREFIX_LIST_OUT(A)  (A)->plist_out.list
 430 #define PREFIX_NAME_OUT(A)  (A)->plist_out.name
 431
 432   /* Shortest Path Tree. */
 433   struct vertex *spf;
 434
 435   /* Threads. */
 436   struct thread *t_router_lsa_self;/* Self-originated router-LSA timer. */
 437   struct thread *t_stub_router;    /* Stub-router timer */
 438 #ifdef HAVE_OPAQUE_LSA
 439   struct thread *t_opaque_lsa_self;     /* Type-10 Opaque-LSAs origin. */
 440 #endif /* HAVE_OPAQUE_LSA */
 441
 442   /* Statistics field. */
 443   u_int32_t spf_calculation;    /* SPF Calculation Count. */
 444
 445   /* Router count. */
 446   u_int32_t abr_count;          /* ABR router in this area. */
 447   u_int32_t asbr_count;         /* ASBR router in this area. */
 448
 449   /* Counters. */
 450   u_int32_t act_ints;           /* Active interfaces. */
 451   u_int32_t full_nbrs;          /* Fully adjacent neighbors. */
 452   u_int32_t full_vls;           /* Fully adjacent virtual neighbors. */
 453 };
 454
 455 /* OSPF config network structure. */
 456 struct ospf_network
 457 {
 458   /* Area ID. */
 459   struct in_addr area_id;
 460   int format;
 461 };
 462
 463 /* OSPF NBMA neighbor structure. */
 464 struct ospf_nbr_nbma
 465 {
 466   /* Neighbor IP address. */
 467   struct in_addr addr;
 468
 469   /* OSPF interface. */
 470   struct ospf_interface *oi;
 471
 472   /* OSPF neighbor structure. */
 473   struct ospf_neighbor *nbr;
 474
 475   /* Neighbor priority. */
 476   u_char priority;
 477
 478   /* Poll timer value. */
 479   u_int32_t v_poll;
 480
 481   /* Poll timer thread. */
 482   struct thread *t_poll;
 483
 484   /* State change. */
 485   u_int32_t state_change;
 486 };
 487
 488 /* Macro. */
 489 #define OSPF_AREA_SAME(X,Y) \
 490         (memcmp ((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
 491
 492 #define IS_OSPF_ABR(O)          ((O)->flags & OSPF_FLAG_ABR)
 493 #define IS_OSPF_ASBR(O)         ((O)->flags & OSPF_FLAG_ASBR)
 494
 495 #define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
 496 #define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
 497
 498 #ifdef roundup
 499 #  define ROUNDUP(val, gran)    roundup(val, gran)
 500 #else /* roundup */
 501 #  define ROUNDUP(val, gran)    (((val) - 1 | (gran) - 1) + 1)
 502 #endif /* roundup */
 503
 504 #define LSA_OPTIONS_GET(area) \
 505         (((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
 506 #define LSA_OPTIONS_NSSA_GET(area) \
 507         (((area)->external_routing == OSPF_AREA_NSSA)  ? OSPF_OPTION_NP : 0)
 508
 509 #define OSPF_TIMER_ON(T,F,V)                                                  \
 510     do {                                                                      \
 511       if (!(T))                                                               \
 512         (T) = thread_add_timer (master, (F), ospf, (V));                      \
 513     } while (0)
 514
 515 #define OSPF_AREA_TIMER_ON(T,F,V)                                             \
 516     do {                                                                      \
 517       if (!(T))                                                               \
 518         (T) = thread_add_timer (master, (F), area, (V));                      \
 519     } while (0)
 520
 521 #define OSPF_POLL_TIMER_ON(T,F,V)                                             \
 522     do {                                                                      \
 523       if (!(T))                                                               \
 524         (T) = thread_add_timer (master, (F), nbr_nbma, (V));                  \
 525     } while (0)
 526
 527 #define OSPF_POLL_TIMER_OFF(X)          OSPF_TIMER_OFF((X))
 528
 529 #define OSPF_TIMER_OFF(X)                                                     \
 530     do {                                                                      \
 531       if (X)                                                                  \
 532         {                                                                     \
 533           thread_cancel (X);                                                  \
 534           (X) = NULL;                                                         \
 535         }                                                                     \
 536     } while (0)
 537
 538 /* Extern variables. */
 539 extern struct ospf_master *om;
 540 extern const struct message ospf_ism_state_msg[];
 541 extern const struct message ospf_nsm_state_msg[];
 542 extern const struct message ospf_lsa_type_msg[];
 543 extern const struct message ospf_link_state_id_type_msg[];
 544 extern const struct message ospf_network_type_msg[];
 545 extern const int ospf_ism_state_msg_max;
 546 extern const int ospf_nsm_state_msg_max;
 547 extern const int ospf_lsa_type_msg_max;
 548 extern const int ospf_link_state_id_type_msg_max;
 549 extern const int ospf_redistributed_proto_max;
 550 extern const int ospf_network_type_msg_max;
 551 extern struct zclient *zclient;
 552 extern struct thread_master *master;
 553 extern int ospf_zlog;
 554
 555 /* Prototypes. */
 556 extern const char *ospf_redist_string(u_int route_type);
 557 extern struct ospf *ospf_lookup (void);
 558 extern struct ospf *ospf_get (void);
 559 extern void ospf_finish (struct ospf *);
 560 extern void ospf_router_id_update (struct ospf *ospf);
 561 extern int ospf_network_set (struct ospf *, struct prefix_ipv4 *,
 562                              struct in_addr);
 563 extern int ospf_network_unset (struct ospf *, struct prefix_ipv4 *,
 564                                struct in_addr);
 565 extern int ospf_area_stub_set (struct ospf *, struct in_addr);
 566 extern int ospf_area_stub_unset (struct ospf *, struct in_addr);
 567 extern int ospf_area_no_summary_set (struct ospf *, struct in_addr);
 568 extern int ospf_area_no_summary_unset (struct ospf *, struct in_addr);
 569 extern int ospf_area_nssa_set (struct ospf *, struct in_addr);
 570 extern int ospf_area_nssa_unset (struct ospf *, struct in_addr);
 571 extern int ospf_area_nssa_translator_role_set (struct ospf *, struct in_addr,
 572                                                int);
 573 extern int ospf_area_export_list_set (struct ospf *, struct ospf_area *,
 574                                       const char *);
 575 extern int ospf_area_export_list_unset (struct ospf *, struct ospf_area *);
 576 extern int ospf_area_import_list_set (struct ospf *, struct ospf_area *,
 577                                       const char *);
 578 extern int ospf_area_import_list_unset (struct ospf *, struct ospf_area *);
 579 extern int ospf_area_shortcut_set (struct ospf *, struct ospf_area *, int);
 580 extern int ospf_area_shortcut_unset (struct ospf *, struct ospf_area *);
 581 extern int ospf_timers_refresh_set (struct ospf *, int);
 582 extern int ospf_timers_refresh_unset (struct ospf *);
 583 extern int ospf_nbr_nbma_set (struct ospf *, struct in_addr);
 584 extern int ospf_nbr_nbma_unset (struct ospf *, struct in_addr);
 585 extern int ospf_nbr_nbma_priority_set (struct ospf *, struct in_addr, u_char);
 586 extern int ospf_nbr_nbma_priority_unset (struct ospf *, struct in_addr);
 587 extern int ospf_nbr_nbma_poll_interval_set (struct ospf *, struct in_addr,
 588                                             unsigned int);
 589 extern int ospf_nbr_nbma_poll_interval_unset (struct ospf *, struct in_addr);
 590 extern void ospf_prefix_list_update (struct prefix_list *);
 591 extern void ospf_init (void);
 592 extern void ospf_if_update (struct ospf *, struct interface *);
 593 extern void ospf_ls_upd_queue_empty (struct ospf_interface *);
 594 extern void ospf_terminate (void);
 595 extern void ospf_nbr_nbma_if_update (struct ospf *, struct ospf_interface *);
 596 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup (struct ospf *,
 597                                                    struct in_addr);
 598 extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next (struct ospf *,
 599                                                         struct in_addr *,
 600                                                         int);
 601 extern int ospf_oi_count (struct interface *);
 602
 603 extern struct ospf_area *ospf_area_get (struct ospf *, struct in_addr, int);
 604 extern void ospf_area_check_free (struct ospf *, struct in_addr);
 605 extern struct ospf_area *ospf_area_lookup_by_area_id (struct ospf *,
 606                                                       struct in_addr);
 607 extern void ospf_area_add_if (struct ospf_area *, struct ospf_interface *);
 608 extern void ospf_area_del_if (struct ospf_area *, struct ospf_interface *);
 609
 610 extern void ospf_route_map_init (void);
 611 extern void ospf_snmp_init (void);
 612
 613 extern void ospf_master_init (void);
 614
 615 #endif /* _ZEBRA_OSPFD_H */