560 lines
19 KiB
C
Executable File
560 lines
19 KiB
C
Executable File
/*
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* OSPFd main header.
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* Copyright (C) 1998, 99, 2000 Kunihiro Ishiguro, Toshiaki Takada
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Zebra; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _ZEBRA_OSPFD_H
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#define _ZEBRA_OSPFD_H
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#include "filter.h"
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#define OSPF_VERSION 2
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/* Default protocol, port number. */
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#ifndef IPPROTO_OSPFIGP
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#define IPPROTO_OSPFIGP 89
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#endif /* IPPROTO_OSPFIGP */
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/* VTY port number. */
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#define OSPF_VTY_PORT 2604
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#define OSPF_VTYSH_PATH "/tmp/.ospfd"
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/* IP TTL for OSPF protocol. */
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#define OSPF_IP_TTL 1
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#define OSPF_VL_IP_TTL 100
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/* Default configuration file name for ospfd. */
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#define OSPF_DEFAULT_CONFIG "ospfd.conf"
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/* Architectual Constants */
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#ifdef DEBUG
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#define OSPF_LS_REFRESH_TIME 60
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#else
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#define OSPF_LS_REFRESH_TIME 1800
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#endif
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#define OSPF_MIN_LS_INTERVAL 5
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#define OSPF_MIN_LS_ARRIVAL 1
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#define OSPF_LSA_MAXAGE 3600
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#define OSPF_CHECK_AGE 300
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#define OSPF_LSA_MAXAGE_DIFF 900
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#define OSPF_LS_INFINITY 0xffffff
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#define OSPF_DEFAULT_DESTINATION 0x00000000 /* 0.0.0.0 */
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#define OSPF_INITIAL_SEQUENCE_NUMBER 0x80000001
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#define OSPF_MAX_SEQUENCE_NUMBER 0x7fffffff
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#define OSPF_LSA_MAXAGE_CHECK_INTERVAL 30
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#define OSPF_ALLSPFROUTERS 0xe0000005 /* 224.0.0.5 */
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#define OSPF_ALLDROUTERS 0xe0000006 /* 224.0.0.6 */
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#ifdef HAVE_NSSA
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#define OSPF_LOOPer 0x7f000000 /* 127.0.0.0 */
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#endif /* HAVE_NSSA */
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#define OSPF_AREA_BACKBONE 0x00000000 /* 0.0.0.0 */
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/* OSPF Authentication Type. */
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#define OSPF_AUTH_NULL 0
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#define OSPF_AUTH_SIMPLE 1
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#define OSPF_AUTH_CRYPTOGRAPHIC 2
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/* For Interface authentication setting default */
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#define OSPF_AUTH_NOTSET -1
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/* For the consumption and sanity of the command handler */
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/* DO NIOT REMOVE!!! Need to detect whether a value has
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been given or not in VLink command handlers */
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#define OSPF_AUTH_CMD_NOTSEEN -2
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/* OSPF SPF timer values. */
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#define OSPF_SPF_DELAY_DEFAULT 5
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#define OSPF_SPF_HOLDTIME_DEFAULT 10
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/* OSPF interface default values. */
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#define OSPF_OUTPUT_COST_DEFAULT 10
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#define OSPF_ROUTER_DEAD_INTERVAL_DEFAULT 40
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#define OSPF_HELLO_INTERVAL_DEFAULT 10
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#define OSPF_ROUTER_PRIORITY_DEFAULT 1
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#define OSPF_RETRANSMIT_INTERVAL_DEFAULT 5
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#define OSPF_TRANSMIT_DELAY_DEFAULT 1
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#define OSPF_DEFAULT_BANDWIDTH 10000 /* Kbps */
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#define OSPF_DEFAULT_REF_BANDWIDTH 100000 /* Kbps */
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#define OSPF_POLL_INTERVAL_DEFAULT 60
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#define OSPF_NEIGHBOR_PRIORITY_DEFAULT 0
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/* OSPF options. */
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#define OSPF_OPTION_T 0x01 /* TOS. */
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#define OSPF_OPTION_E 0x02
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#define OSPF_OPTION_MC 0x04
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#define OSPF_OPTION_NP 0x08
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#define OSPF_OPTION_EA 0x10
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#define OSPF_OPTION_DC 0x20
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#define OSPF_OPTION_O 0x40
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/* OSPF Database Description flags. */
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#define OSPF_DD_FLAG_MS 0x01
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#define OSPF_DD_FLAG_M 0x02
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#define OSPF_DD_FLAG_I 0x04
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#define OSPF_DD_FLAG_ALL 0x07
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/* Timer value. */
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#define OSPF_ROUTER_ID_UPDATE_DELAY 1
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#define OSPF_LS_REFRESH_SHIFT (60 * 15)
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#define OSPF_LS_REFRESH_JITTER 60
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/* OSPF instance structure. */
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struct ospf
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{
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/* OSPF Router ID. */
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struct in_addr router_id; /* Configured automatically. */
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struct in_addr router_id_static; /* Configured manually. */
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/* ABR/ASBR internal flags. */
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u_char flags;
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#define OSPF_FLAG_ABR 0x0001
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#define OSPF_FLAG_ASBR 0x0002
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/* ABR type. */
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u_char abr_type;
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#define OSPF_ABR_UNKNOWN 0
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#define OSPF_ABR_STAND 1
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#define OSPF_ABR_IBM 2
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#define OSPF_ABR_CISCO 3
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#define OSPF_ABR_SHORTCUT 4
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/* NSSA ABR */
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u_char anyNSSA; /* Bump for every NSSA attached. */
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/* Configured variables. */
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u_char config;
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#define OSPF_RFC1583_COMPATIBLE (1 << 0)
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#define OSPF_OPAQUE_CAPABLE (1 << 2)
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#ifdef HAVE_OPAQUE_LSA
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/* Opaque-LSA administrative flags. */
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u_char opaque;
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#define OPAQUE_OPERATION_READY_BIT (1 << 0)
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#define OPAQUE_BLOCK_TYPE_09_LSA_BIT (1 << 1)
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#define OPAQUE_BLOCK_TYPE_10_LSA_BIT (1 << 2)
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#define OPAQUE_BLOCK_TYPE_11_LSA_BIT (1 << 3)
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#endif /* HAVE_OPAQUE_LSA */
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int spf_delay; /* SPF delay time. */
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int spf_holdtime; /* SPF hold time. */
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int default_originate; /* Default information originate. */
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#define DEFAULT_ORIGINATE_NONE 0
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#define DEFAULT_ORIGINATE_ZEBRA 1
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#define DEFAULT_ORIGINATE_ALWAYS 2
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u_int32_t ref_bandwidth; /* Reference Bandwidth (Kbps). */
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struct route_table *networks; /* OSPF config networks. */
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list vlinks; /* Configured Virtual-Links. */
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list areas; /* OSPF areas. */
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struct route_table *nbr_nbma;
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struct ospf_area *backbone; /* Pointer to the Backbone Area. */
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list iflist; /* Zebra derived interfaces. */
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list oiflist; /* ospf interfaces */
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/* LSDB of AS-external-LSAs. */
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struct ospf_lsdb *lsdb;
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/* Redistributed external information. */
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struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
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#define EXTERNAL_INFO(T) ospf_top->external_info[T]
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/* Flags. */
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int external_origin; /* AS-external-LSA origin flag. */
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int ase_calc; /* ASE calculation flag. */
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#ifdef HAVE_OPAQUE_LSA
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list opaque_lsa_self; /* Type-11 Opaque-LSAs */
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#endif /* HAVE_OPAQUE_LSA */
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/* Routing tables. */
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struct route_table *old_table; /* Old routing table. */
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struct route_table *new_table; /* Current routing table. */
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struct route_table *old_rtrs; /* Old ABR/ASBR RT. */
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struct route_table *new_rtrs; /* New ABR/ASBR RT. */
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struct route_table *new_external_route; /* New External Route. */
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struct route_table *old_external_route; /* Old External Route. */
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struct route_table *external_lsas; /* Database of external LSAs,
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prefix is LSA's adv. network*/
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/* Time stamps. */
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time_t ts_spf; /* SPF calculation time stamp. */
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list maxage_lsa; /* List of MaxAge LSA for deletion. */
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int redistribute; /* Num of redistributed protocols. */
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/* Threads. */
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struct thread *t_router_id_update; /* Router ID update timer. */
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struct thread *t_router_lsa_update; /* router-LSA update timer. */
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struct thread *t_abr_task; /* ABR task timer. */
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struct thread *t_asbr_check; /* ASBR check timer. */
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struct thread *t_distribute_update; /* Distirbute list update timer. */
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struct thread *t_spf_calc; /* SPF calculation timer. */
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struct thread *t_ase_calc; /* ASE calculation timer. */
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struct thread *t_external_lsa; /* AS-external-LSA origin timer. */
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#ifdef HAVE_OPAQUE_LSA
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struct thread *t_opaque_lsa_self; /* Type-11 Opaque-LSAs origin event. */
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#endif /* HAVE_OPAQUE_LSA */
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struct thread *t_maxage; /* MaxAge LSA remover timer. */
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struct thread *t_maxage_walker; /* MaxAge LSA checking timer. */
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struct thread *t_write;
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struct thread *t_read;
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int fd;
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list oi_write_q;
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/* Distribute lists out of other route sources. */
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struct
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{
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char *name;
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struct access_list *list;
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} dlist[ZEBRA_ROUTE_MAX];
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#define DISTRIBUTE_NAME(T) ospf_top->dlist[T].name
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#define DISTRIBUTE_LIST(T) ospf_top->dlist[T].list
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/* Redistribute metric info. */
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struct
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{
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int type; /* External metric type (E1 or E2). */
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int value; /* Value for static metric (24-bit).
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-1 means metric value is not set. */
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} dmetric [ZEBRA_ROUTE_MAX + 1];
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/* For redistribute route map. */
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struct
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{
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char *name;
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struct route_map *map;
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} route_map [ZEBRA_ROUTE_MAX + 1]; /* +1 is for default-information */
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#define ROUTEMAP_NAME(T) ospf_top->route_map[T].name
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#define ROUTEMAP(T) ospf_top->route_map[T].map
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int default_metric; /* Default metric for redistribute. */
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#define OSPF_LSA_REFRESHER_GRANULARITY 10
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#define OSPF_LSA_REFRESHER_SLOTS ((OSPF_LS_REFRESH_TIME + \
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OSPF_LS_REFRESH_SHIFT)/10 + 1)
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struct
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{
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u_int16_t index;
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list qs[OSPF_LSA_REFRESHER_SLOTS];
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} lsa_refresh_queue;
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struct thread *t_lsa_refresher;
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time_t lsa_refresher_started;
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#define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
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u_int16_t lsa_refresh_interval;
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/* Distance parameter. */
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u_char distance_all;
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u_char distance_intra;
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u_char distance_inter;
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u_char distance_external;
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/* Statistics for LSA origination. */
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u_int32_t lsa_originate_count;
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/* Statistics for LSA used for new instantiation. */
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u_int32_t rx_lsa_count;
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struct route_table *distance_table;
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};
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/* OSPF area structure. */
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struct ospf_area
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{
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/* OSPF instance. */
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struct ospf *top;
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/* Zebra interface list belonging to the area. */
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list oiflist;
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/* Area ID. */
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struct in_addr area_id;
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/* Area ID format. */
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char format;
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#define OSPF_AREA_ID_FORMAT_ADDRESS 1
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#define OSPF_AREA_ID_FORMAT_DECIMAL 2
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/* Address range. */
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list address_range;
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/* Configured variables. */
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int external_routing; /* ExternalRoutingCapability. */
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#define OSPF_AREA_DEFAULT 0
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#define OSPF_AREA_STUB 1
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#define OSPF_AREA_NSSA 2
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#define OSPF_AREA_TYPE_MAX 3
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int no_summary; /* Don't inject summaries into stub.*/
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int shortcut_configured; /* Area configured as shortcut. */
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#define OSPF_SHORTCUT_DEFAULT 0
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#define OSPF_SHORTCUT_ENABLE 1
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#define OSPF_SHORTCUT_DISABLE 2
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int shortcut_capability; /* Other ABRs agree on S-bit */
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u_int32_t default_cost; /* StubDefaultCost. */
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int auth_type; /* Authentication type. */
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u_char NSSATranslatorRole; /* NSSA Role during configuration */
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#define OSPF_NSSA_ROLE_NEVER 0
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#define OSPF_NSSA_ROLE_ALWAYS 1
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#define OSPF_NSSA_ROLE_CANDIDATE 2
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u_char NSSATranslator; /* NSSA Role after election process */
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u_char transit; /* TransitCapability. */
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#define OSPF_TRANSIT_FALSE 0
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#define OSPF_TRANSIT_TRUE 1
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struct route_table *ranges; /* Configured Area Ranges. */
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/* Area related LSDBs[Type1-4]. */
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struct ospf_lsdb *lsdb;
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/* Self-originated LSAs. */
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struct ospf_lsa *router_lsa_self;
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#ifdef HAVE_OPAQUE_LSA
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list opaque_lsa_self; /* Type-10 Opaque-LSAs */
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#endif /* HAVE_OPAQUE_LSA */
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/* Area announce list. */
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struct
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{
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char *name;
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struct access_list *list;
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} export;
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#define EXPORT_NAME(A) (A)->export.name
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#define EXPORT_LIST(A) (A)->export.list
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/* Area acceptance list. */
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struct
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{
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char *name;
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struct access_list *list;
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} import;
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#define IMPORT_NAME(A) (A)->import.name
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#define IMPORT_LIST(A) (A)->import.list
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/* Type 3 LSA Area prefix-list. */
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struct
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{
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char *name;
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struct prefix_list *list;
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} plist_in;
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#define PREFIX_LIST_IN(A) (A)->plist_in.list
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#define PREFIX_NAME_IN(A) (A)->plist_in.name
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struct
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{
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char *name;
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struct prefix_list *list;
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} plist_out;
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#define PREFIX_LIST_OUT(A) (A)->plist_out.list
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#define PREFIX_NAME_OUT(A) (A)->plist_out.name
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/* Shortest Path Tree. */
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struct vertex *spf;
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/* Threads. */
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struct thread *t_router_lsa_self;/* Self-originated router-LSA timer. */
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#ifdef HAVE_OPAQUE_LSA
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struct thread *t_opaque_lsa_self; /* Type-10 Opaque-LSAs origin. */
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#endif /* HAVE_OPAQUE_LSA */
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/* Statistics field. */
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u_int32_t spf_calculation; /* SPF Calculation Count. */
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/* Router count. */
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u_int32_t abr_count; /* ABR router in this area. */
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u_int32_t asbr_count; /* ASBR router in this area. */
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/* Counters. */
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u_int32_t act_ints; /* Active interfaces. */
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u_int32_t full_nbrs; /* Fully adjacent neighbors. */
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u_int32_t full_vls; /* Fully adjacent virtual neighbors. */
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};
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/* OSPF config network structure. */
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struct ospf_network
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{
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/* Area ID. */
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struct in_addr area_id;
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int format;
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};
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/* OSPF NBMA neighbor structure. */
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struct ospf_nbr_nbma
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{
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/* Neighbor IP address. */
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struct in_addr addr;
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/* OSPF interface. */
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struct ospf_interface *oi;
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/* OSPF neighbor structure. */
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struct ospf_neighbor *nbr;
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/* Neighbor priority. */
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u_char priority;
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/* Poll timer value. */
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u_int32_t v_poll;
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/* Poll timer thread. */
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struct thread *t_poll;
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/* State change. */
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u_int32_t state_change;
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};
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/* Macro. */
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#define OSPF_AREA_SAME(X,Y) \
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(memcmp ((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
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#define OSPF_IS_ABR (ospf_top->flags & OSPF_FLAG_ABR)
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#define OSPF_IS_ASBR (ospf_top->flags & OSPF_FLAG_ASBR)
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#define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
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#define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
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#ifdef roundup
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# define ROUNDUP(val, gran) roundup(val, gran)
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#else /* roundup */
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# define ROUNDUP(val, gran) (((val) - 1 | (gran) - 1) + 1)
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#endif /* roundup */
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#define LSA_OPTIONS_GET(area) \
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(((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
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#ifdef HAVE_NSSA
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#define LSA_NSSA_GET(area) \
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(((area)->external_routing == OSPF_AREA_NSSA) ? \
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(area)->NSSATranslator : 0)
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#endif /* HAVE_NSSA */
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#define OSPF_TIMER_ON(T,F,V) \
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do { \
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if (!(T)) \
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(T) = thread_add_timer (master, (F), NULL, (V)); \
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} while (0)
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#define OSPF_AREA_TIMER_ON(T,F,V) \
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do { \
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if (!(T)) \
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(T) = thread_add_timer (master, (F), area, (V)); \
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} while (0)
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#define OSPF_POLL_TIMER_ON(T,F,V) \
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do { \
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if (!(T)) \
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(T) = thread_add_timer (master, (F), nbr_nbma, (V)); \
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} while (0)
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#define OSPF_POLL_TIMER_OFF(X) OSPF_TIMER_OFF((X))
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#define OSPF_TIMER_OFF(X) \
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do { \
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if (X) \
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{ \
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thread_cancel (X); \
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(X) = NULL; \
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} \
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} while (0)
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#define OSPF_SCHEDULE_MAXAGE(T, F) \
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do { \
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if (!(T)) \
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(T) = thread_add_timer (master, (F), 0, 2); \
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} while (0)
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/* Messages */
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extern struct message ospf_ism_state_msg[];
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extern struct message ospf_nsm_state_msg[];
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extern struct message ospf_lsa_type_msg[];
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extern struct message ospf_link_state_id_type_msg[];
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extern struct message ospf_redistributed_proto[];
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extern struct message ospf_network_type_msg[];
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extern int ospf_ism_state_msg_max;
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extern int ospf_nsm_state_msg_max;
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extern int ospf_lsa_type_msg_max;
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extern int ospf_link_state_id_type_msg_max;
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extern int ospf_redistributed_proto_max;
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extern int ospf_network_type_msg_max;
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extern struct zclient *zclient;
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extern struct thread_master *master;
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extern struct ospf *ospf_top;
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extern int ospf_zlog;
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/* Prototypes. */
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struct ospf *ospf_get ();
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void ospf_finish (struct ospf *);
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int ospf_router_id_update_timer (struct thread *);
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void ospf_router_id_update ();
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int ospf_network_set (struct ospf *, struct prefix_ipv4 *, struct in_addr);
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int ospf_network_unset (struct ospf *, struct prefix_ipv4 *, struct in_addr);
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int ospf_area_stub_set (struct ospf *, struct in_addr);
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int ospf_area_stub_unset (struct ospf *, struct in_addr);
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int ospf_area_no_summary_set (struct ospf *, struct in_addr);
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int ospf_area_no_summary_unset (struct ospf *, struct in_addr);
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int ospf_area_nssa_set (struct ospf *, struct in_addr);
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int ospf_area_nssa_unset (struct ospf *, struct in_addr);
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int ospf_area_nssa_translator_role_set (struct ospf *, struct in_addr, int);
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int ospf_area_export_list_set (struct ospf_area *, char *);
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int ospf_area_export_list_unset (struct ospf_area *);
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int ospf_area_import_list_set (struct ospf_area *, char *);
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int ospf_area_import_list_unset (struct ospf_area *);
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int ospf_area_shortcut_set (struct ospf_area *, int);
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int ospf_area_shortcut_unset (struct ospf_area *);
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int ospf_timers_spf_set (struct ospf *, u_int32_t, u_int32_t);
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int ospf_timers_spf_unset (struct ospf *);
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int ospf_timers_refresh_set (struct ospf *, int);
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int ospf_timers_refresh_unset (struct ospf *);
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int ospf_nbr_nbma_set (struct ospf *, struct in_addr);
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int ospf_nbr_nbma_unset (struct ospf *, struct in_addr);
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int ospf_nbr_nbma_priority_set (struct ospf *, struct in_addr, u_char);
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int ospf_nbr_nbma_priority_unset (struct ospf *, struct in_addr);
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int ospf_nbr_nbma_poll_interval_set (struct ospf *, struct in_addr, int);
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int ospf_nbr_nbma_poll_interval_unset (struct ospf *, struct in_addr);
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void ospf_prefix_list_update (struct prefix_list *);
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void ospf_init ();
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void ospf_if_update ();
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void ospf_ls_upd_queue_empty (struct ospf_interface *);
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void ospf_terminate ();
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void ospf_nbr_nbma_if_update (struct ospf_interface *);
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struct ospf_nbr_nbma *ospf_nbr_nbma_lookup (struct ospf *, struct in_addr);
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struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next (struct in_addr *, int);
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int ospf_oi_count (struct interface *);
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struct ospf_area *ospf_area_new (struct in_addr);
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struct ospf_area *ospf_area_get (struct in_addr, int);
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void ospf_area_check_free (struct in_addr);
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struct ospf_area *ospf_area_lookup_by_area_id (struct in_addr);
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void ospf_area_add_if (struct ospf_area *, struct ospf_interface *);
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void ospf_area_del_if (struct ospf_area *, struct ospf_interface *);
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void ospf_route_map_init ();
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void ospf_snmp_init ();
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#endif /* _ZEBRA_OSPFD_H */
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