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|
/*
* OSPFd main header.
* Copyright (C) 1998, 99, 2000 Kunihiro Ishiguro, Toshiaki Takada
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the Free
* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _ZEBRA_OSPFD_H
#define _ZEBRA_OSPFD_H
#include <zebra.h>
#include "filter.h"
#include "log.h"
#define OSPF_VERSION 2
/* Default protocol, port number. */
#ifndef IPPROTO_OSPFIGP
#define IPPROTO_OSPFIGP 89
#endif /* IPPROTO_OSPFIGP */
/* IP precedence. */
#ifndef IPTOS_PREC_INTERNETCONTROL
#define IPTOS_PREC_INTERNETCONTROL 0xC0
#endif /* IPTOS_PREC_INTERNETCONTROL */
/* VTY port number. */
#define OSPF_VTY_PORT 2604
/* IP TTL for OSPF protocol. */
#define OSPF_IP_TTL 1
#define OSPF_VL_IP_TTL 100
/* Default configuration file name for ospfd. */
#define OSPF_DEFAULT_CONFIG "ospfd.conf"
/* Architectual Constants */
#ifdef DEBUG
#define OSPF_LS_REFRESH_TIME 60
#else
#define OSPF_LS_REFRESH_TIME 1800
#endif
#define OSPF_MIN_LS_INTERVAL 5
#define OSPF_MIN_LS_ARRIVAL 1
#define OSPF_LSA_INITIAL_AGE 0 /* useful for debug */
#define OSPF_LSA_MAXAGE 3600
#define OSPF_CHECK_AGE 300
#define OSPF_LSA_MAXAGE_DIFF 900
#define OSPF_LS_INFINITY 0xffffff
#define OSPF_DEFAULT_DESTINATION 0x00000000 /* 0.0.0.0 */
#define OSPF_INITIAL_SEQUENCE_NUMBER 0x80000001
#define OSPF_MAX_SEQUENCE_NUMBER 0x7fffffff
#define OSPF_NSSA_TRANS_STABLE_DEFAULT 40
#define OSPF_ALLSPFROUTERS 0xe0000005 /* 224.0.0.5 */
#define OSPF_ALLDROUTERS 0xe0000006 /* 224.0.0.6 */
#define OSPF_AREA_BACKBONE 0x00000000 /* 0.0.0.0 */
/* OSPF Authentication Type. */
#define OSPF_AUTH_NULL 0
#define OSPF_AUTH_SIMPLE 1
#define OSPF_AUTH_CRYPTOGRAPHIC 2
/* For Interface authentication setting default */
#define OSPF_AUTH_NOTSET -1
/* For the consumption and sanity of the command handler */
/* DO NIOT REMOVE!!! Need to detect whether a value has
been given or not in VLink command handlers */
#define OSPF_AUTH_CMD_NOTSEEN -2
/* OSPF SPF timer values. */
#define OSPF_SPF_DELAY_DEFAULT 200
#define OSPF_SPF_HOLDTIME_DEFAULT 1000
#define OSPF_SPF_MAX_HOLDTIME_DEFAULT 10000
/* OSPF interface default values. */
#define OSPF_OUTPUT_COST_DEFAULT 10
#define OSPF_OUTPUT_COST_INFINITE UINT16_MAX
#define OSPF_ROUTER_DEAD_INTERVAL_DEFAULT 40
#define OSPF_ROUTER_DEAD_INTERVAL_MINIMAL 1
#define OSPF_HELLO_INTERVAL_DEFAULT 10
#define OSPF_ROUTER_PRIORITY_DEFAULT 1
#define OSPF_RETRANSMIT_INTERVAL_DEFAULT 5
#define OSPF_TRANSMIT_DELAY_DEFAULT 1
#define OSPF_DEFAULT_BANDWIDTH 10000 /* Kbps */
#define OSPF_DEFAULT_REF_BANDWIDTH 100000 /* Kbps */
#define OSPF_POLL_INTERVAL_DEFAULT 60
#define OSPF_NEIGHBOR_PRIORITY_DEFAULT 0
#define OSPF_MTU_IGNORE_DEFAULT 0
#define OSPF_FAST_HELLO_DEFAULT 0
/* OSPF options. */
#define OSPF_OPTION_T 0x01 /* TOS. */
#define OSPF_OPTION_E 0x02
#define OSPF_OPTION_MC 0x04
#define OSPF_OPTION_NP 0x08
#define OSPF_OPTION_EA 0x10
#define OSPF_OPTION_DC 0x20
#define OSPF_OPTION_O 0x40
/* OSPF Database Description flags. */
#define OSPF_DD_FLAG_MS 0x01
#define OSPF_DD_FLAG_M 0x02
#define OSPF_DD_FLAG_I 0x04
#define OSPF_DD_FLAG_ALL 0x07
#define OSPF_LS_REFRESH_SHIFT (60 * 15)
#define OSPF_LS_REFRESH_JITTER 60
/* OSPF master for system wide configuration and variables. */
struct ospf_master
{
/* OSPF instance. */
struct list *ospf;
/* OSPF thread master. */
struct thread_master *master;
/* Zebra interface list. */
struct list *iflist;
/* Redistributed external information. */
struct route_table *external_info[ZEBRA_ROUTE_MAX + 1];
#define EXTERNAL_INFO(T) om->external_info[T]
/* OSPF start time. */
time_t start_time;
/* Various OSPF global configuration. */
u_char options;
#define OSPF_MASTER_SHUTDOWN (1 << 0) /* deferred-shutdown */
};
/* OSPF instance structure. */
struct ospf
{
/* OSPF Router ID. */
struct in_addr router_id; /* Configured automatically. */
struct in_addr router_id_static; /* Configured manually. */
/* ABR/ASBR internal flags. */
u_char flags;
#define OSPF_FLAG_ABR 0x0001
#define OSPF_FLAG_ASBR 0x0002
/* ABR type. */
u_char abr_type;
#define OSPF_ABR_UNKNOWN 0
#define OSPF_ABR_STAND 1
#define OSPF_ABR_IBM 2
#define OSPF_ABR_CISCO 3
#define OSPF_ABR_SHORTCUT 4
#define OSPF_ABR_DEFAULT OSPF_ABR_CISCO
/* NSSA ABR */
u_char anyNSSA; /* Bump for every NSSA attached. */
/* Configured variables. */
u_char config;
#define OSPF_RFC1583_COMPATIBLE (1 << 0)
#define OSPF_OPAQUE_CAPABLE (1 << 2)
#define OSPF_LOG_ADJACENCY_CHANGES (1 << 3)
#define OSPF_LOG_ADJACENCY_DETAIL (1 << 4)
#ifdef HAVE_OPAQUE_LSA
/* Opaque-LSA administrative flags. */
u_char opaque;
#define OPAQUE_OPERATION_READY_BIT (1 << 0)
#define OPAQUE_BLOCK_TYPE_09_LSA_BIT (1 << 1)
#define OPAQUE_BLOCK_TYPE_10_LSA_BIT (1 << 2)
#define OPAQUE_BLOCK_TYPE_11_LSA_BIT (1 << 3)
#endif /* HAVE_OPAQUE_LSA */
/* RFC3137 stub router. Configured time to stay stub / max-metric */
unsigned int stub_router_startup_time; /* seconds */
unsigned int stub_router_shutdown_time; /* seconds */
#define OSPF_STUB_ROUTER_UNCONFIGURED 0
/* SPF parameters */
unsigned int spf_delay; /* SPF delay time. */
unsigned int spf_holdtime; /* SPF hold time. */
unsigned int spf_max_holdtime; /* SPF maximum-holdtime */
unsigned int spf_hold_multiplier; /* Adaptive multiplier for hold time */
int default_originate; /* Default information originate. */
#define DEFAULT_ORIGINATE_NONE 0
#define DEFAULT_ORIGINATE_ZEBRA 1
#define DEFAULT_ORIGINATE_ALWAYS 2
u_int32_t ref_bandwidth; /* Reference Bandwidth (Kbps). */
struct route_table *networks; /* OSPF config networks. */
struct list *vlinks; /* Configured Virtual-Links. */
struct list *areas; /* OSPF areas. */
struct route_table *nbr_nbma;
struct ospf_area *backbone; /* Pointer to the Backbone Area. */
struct list *oiflist; /* ospf interfaces */
u_char passive_interface_default; /* passive-interface default */
/* LSDB of AS-external-LSAs. */
struct ospf_lsdb *lsdb;
/* Flags. */
int external_origin; /* AS-external-LSA origin flag. */
int ase_calc; /* ASE calculation flag. */
#ifdef HAVE_OPAQUE_LSA
struct list *opaque_lsa_self; /* Type-11 Opaque-LSAs */
#endif /* HAVE_OPAQUE_LSA */
/* Routing tables. */
struct route_table *old_table; /* Old routing table. */
struct route_table *new_table; /* Current routing table. */
struct route_table *old_rtrs; /* Old ABR/ASBR RT. */
struct route_table *new_rtrs; /* New ABR/ASBR RT. */
struct route_table *new_external_route; /* New External Route. */
struct route_table *old_external_route; /* Old External Route. */
struct route_table *external_lsas; /* Database of external LSAs,
prefix is LSA's adv. network*/
/* Time stamps. */
struct timeval ts_spf; /* SPF calculation time stamp. */
struct list *maxage_lsa; /* List of MaxAge LSA for deletion. */
int redistribute; /* Num of redistributed protocols. */
/* Threads. */
struct thread *t_abr_task; /* ABR task timer. */
struct thread *t_asbr_check; /* ASBR check timer. */
struct thread *t_distribute_update; /* Distirbute list update timer. */
struct thread *t_spf_calc; /* SPF calculation timer. */
struct thread *t_ase_calc; /* ASE calculation timer. */
struct thread *t_external_lsa; /* AS-external-LSA origin timer. */
#ifdef HAVE_OPAQUE_LSA
struct thread *t_opaque_lsa_self; /* Type-11 Opaque-LSAs origin event. */
#endif /* HAVE_OPAQUE_LSA */
#define OSFP_LSA_MAXAGE_REMOVE_DELAY_DEFAULT 60
unsigned int maxage_delay; /* Delay on Maxage remover timer, sec */
struct thread *t_maxage; /* MaxAge LSA remover timer. */
#define OSPF_LSA_MAXAGE_CHECK_INTERVAL 30
struct thread *t_maxage_walker; /* MaxAge LSA checking timer. */
struct thread *t_deferred_shutdown; /* deferred/stub-router shutdown timer*/
struct thread *t_write;
struct thread *t_read;
int fd;
int maxsndbuflen;
struct stream *ibuf;
struct list *oi_write_q;
/* Distribute lists out of other route sources. */
struct
{
char *name;
struct access_list *list;
} dlist[ZEBRA_ROUTE_MAX];
#define DISTRIBUTE_NAME(O,T) (O)->dlist[T].name
#define DISTRIBUTE_LIST(O,T) (O)->dlist[T].list
/* Redistribute metric info. */
struct
{
int type; /* External metric type (E1 or E2). */
int value; /* Value for static metric (24-bit).
-1 means metric value is not set. */
} dmetric [ZEBRA_ROUTE_MAX + 1];
/* For redistribute route map. */
struct
{
char *name;
struct route_map *map;
} route_map [ZEBRA_ROUTE_MAX + 1]; /* +1 is for default-information */
#define ROUTEMAP_NAME(O,T) (O)->route_map[T].name
#define ROUTEMAP(O,T) (O)->route_map[T].map
int default_metric; /* Default metric for redistribute. */
#define OSPF_LSA_REFRESHER_GRANULARITY 10
#define OSPF_LSA_REFRESHER_SLOTS ((OSPF_LS_REFRESH_TIME + \
OSPF_LS_REFRESH_SHIFT)/10 + 1)
struct
{
u_int16_t index;
struct list *qs[OSPF_LSA_REFRESHER_SLOTS];
} lsa_refresh_queue;
struct thread *t_lsa_refresher;
time_t lsa_refresher_started;
#define OSPF_LSA_REFRESH_INTERVAL_DEFAULT 10
u_int16_t lsa_refresh_interval;
/* Distance parameter. */
u_char distance_all;
u_char distance_intra;
u_char distance_inter;
u_char distance_external;
/* Statistics for LSA origination. */
u_int32_t lsa_originate_count;
/* Statistics for LSA used for new instantiation. */
u_int32_t rx_lsa_count;
struct route_table *distance_table;
};
/* OSPF area structure. */
struct ospf_area
{
/* OSPF instance. */
struct ospf *ospf;
/* Zebra interface list belonging to the area. */
struct list *oiflist;
/* Area ID. */
struct in_addr area_id;
/* Area ID format. */
char format;
#define OSPF_AREA_ID_FORMAT_ADDRESS 1
#define OSPF_AREA_ID_FORMAT_DECIMAL 2
/* Address range. */
struct list *address_range;
/* Configured variables. */
int external_routing; /* ExternalRoutingCapability. */
#define OSPF_AREA_DEFAULT 0
#define OSPF_AREA_STUB 1
#define OSPF_AREA_NSSA 2
#define OSPF_AREA_TYPE_MAX 3
int no_summary; /* Don't inject summaries into stub.*/
int shortcut_configured; /* Area configured as shortcut. */
#define OSPF_SHORTCUT_DEFAULT 0
#define OSPF_SHORTCUT_ENABLE 1
#define OSPF_SHORTCUT_DISABLE 2
int shortcut_capability; /* Other ABRs agree on S-bit */
u_int32_t default_cost; /* StubDefaultCost. */
int auth_type; /* Authentication type. */
u_char NSSATranslatorRole; /* NSSA configured role */
#define OSPF_NSSA_ROLE_NEVER 0
#define OSPF_NSSA_ROLE_CANDIDATE 1
#define OSPF_NSSA_ROLE_ALWAYS 2
u_char NSSATranslatorState; /* NSSA operational role */
#define OSPF_NSSA_TRANSLATE_DISABLED 0
#define OSPF_NSSA_TRANSLATE_ENABLED 1
int NSSATranslatorStabilityInterval;
u_char transit; /* TransitCapability. */
#define OSPF_TRANSIT_FALSE 0
#define OSPF_TRANSIT_TRUE 1
struct route_table *ranges; /* Configured Area Ranges. */
/* RFC3137 stub router state flags for area */
u_char stub_router_state;
#define OSPF_AREA_ADMIN_STUB_ROUTED (1 << 0) /* admin stub-router set */
#define OSPF_AREA_IS_STUB_ROUTED (1 << 1) /* stub-router active */
#define OSPF_AREA_WAS_START_STUB_ROUTED (1 << 2) /* startup SR was done */
/* Area related LSDBs[Type1-4]. */
struct ospf_lsdb *lsdb;
/* Self-originated LSAs. */
struct ospf_lsa *router_lsa_self;
#ifdef HAVE_OPAQUE_LSA
struct list *opaque_lsa_self; /* Type-10 Opaque-LSAs */
#endif /* HAVE_OPAQUE_LSA */
/* Area announce list. */
struct
{
char *name;
struct access_list *list;
} _export;
#define EXPORT_NAME(A) (A)->_export.name
#define EXPORT_LIST(A) (A)->_export.list
/* Area acceptance list. */
struct
{
char *name;
struct access_list *list;
} import;
#define IMPORT_NAME(A) (A)->import.name
#define IMPORT_LIST(A) (A)->import.list
/* Type 3 LSA Area prefix-list. */
struct
{
char *name;
struct prefix_list *list;
} plist_in;
#define PREFIX_LIST_IN(A) (A)->plist_in.list
#define PREFIX_NAME_IN(A) (A)->plist_in.name
struct
{
char *name;
struct prefix_list *list;
} plist_out;
#define PREFIX_LIST_OUT(A) (A)->plist_out.list
#define PREFIX_NAME_OUT(A) (A)->plist_out.name
/* Shortest Path Tree. */
struct vertex *spf;
/* Threads. */
struct thread *t_stub_router; /* Stub-router timer */
#ifdef HAVE_OPAQUE_LSA
struct thread *t_opaque_lsa_self; /* Type-10 Opaque-LSAs origin. */
#endif /* HAVE_OPAQUE_LSA */
/* Statistics field. */
u_int32_t spf_calculation; /* SPF Calculation Count. */
/* Router count. */
u_int32_t abr_count; /* ABR router in this area. */
u_int32_t asbr_count; /* ASBR router in this area. */
/* Counters. */
u_int32_t act_ints; /* Active interfaces. */
u_int32_t full_nbrs; /* Fully adjacent neighbors. */
u_int32_t full_vls; /* Fully adjacent virtual neighbors. */
};
/* OSPF config network structure. */
struct ospf_network
{
/* Area ID. */
struct in_addr area_id;
int format;
};
/* OSPF NBMA neighbor structure. */
struct ospf_nbr_nbma
{
/* Neighbor IP address. */
struct in_addr addr;
/* OSPF interface. */
struct ospf_interface *oi;
/* OSPF neighbor structure. */
struct ospf_neighbor *nbr;
/* Neighbor priority. */
u_char priority;
/* Poll timer value. */
u_int32_t v_poll;
/* Poll timer thread. */
struct thread *t_poll;
/* State change. */
u_int32_t state_change;
};
/* Macro. */
#define OSPF_AREA_SAME(X,Y) \
(memcmp ((X->area_id), (Y->area_id), IPV4_MAX_BYTELEN) == 0)
#define IS_OSPF_ABR(O) ((O)->flags & OSPF_FLAG_ABR)
#define IS_OSPF_ASBR(O) ((O)->flags & OSPF_FLAG_ASBR)
#define OSPF_IS_AREA_ID_BACKBONE(I) ((I).s_addr == OSPF_AREA_BACKBONE)
#define OSPF_IS_AREA_BACKBONE(A) OSPF_IS_AREA_ID_BACKBONE ((A)->area_id)
#ifdef roundup
# define ROUNDUP(val, gran) roundup(val, gran)
#else /* roundup */
# define ROUNDUP(val, gran) (((val) - 1 | (gran) - 1) + 1)
#endif /* roundup */
#define LSA_OPTIONS_GET(area) \
(((area)->external_routing == OSPF_AREA_DEFAULT) ? OSPF_OPTION_E : 0)
#define LSA_OPTIONS_NSSA_GET(area) \
(((area)->external_routing == OSPF_AREA_NSSA) ? OSPF_OPTION_NP : 0)
#define OSPF_TIMER_ON(T,F,V) \
do { \
if (!(T)) \
(T) = thread_add_timer (master, (F), ospf, (V)); \
} while (0)
#define OSPF_AREA_TIMER_ON(T,F,V) \
do { \
if (!(T)) \
(T) = thread_add_timer (master, (F), area, (V)); \
} while (0)
#define OSPF_POLL_TIMER_ON(T,F,V) \
do { \
if (!(T)) \
(T) = thread_add_timer (master, (F), nbr_nbma, (V)); \
} while (0)
#define OSPF_POLL_TIMER_OFF(X) OSPF_TIMER_OFF((X))
#define OSPF_TIMER_OFF(X) \
do { \
if (X) \
{ \
thread_cancel (X); \
(X) = NULL; \
} \
} while (0)
/* Extern variables. */
extern struct ospf_master *om;
extern const struct message ospf_ism_state_msg[];
extern const struct message ospf_nsm_state_msg[];
extern const struct message ospf_lsa_type_msg[];
extern const struct message ospf_link_state_id_type_msg[];
extern const struct message ospf_network_type_msg[];
extern const int ospf_ism_state_msg_max;
extern const int ospf_nsm_state_msg_max;
extern const int ospf_lsa_type_msg_max;
extern const int ospf_link_state_id_type_msg_max;
extern const int ospf_redistributed_proto_max;
extern const int ospf_network_type_msg_max;
extern struct zclient *zclient;
extern struct thread_master *master;
extern int ospf_zlog;
/* Prototypes. */
extern const char *ospf_redist_string(u_int route_type);
extern struct ospf *ospf_lookup (void);
extern struct ospf *ospf_get (void);
extern void ospf_finish (struct ospf *);
extern void ospf_router_id_update (struct ospf *ospf);
extern int ospf_network_set (struct ospf *, struct prefix_ipv4 *,
struct in_addr);
extern int ospf_network_unset (struct ospf *, struct prefix_ipv4 *,
struct in_addr);
extern int ospf_area_stub_set (struct ospf *, struct in_addr);
extern int ospf_area_stub_unset (struct ospf *, struct in_addr);
extern int ospf_area_no_summary_set (struct ospf *, struct in_addr);
extern int ospf_area_no_summary_unset (struct ospf *, struct in_addr);
extern int ospf_area_nssa_set (struct ospf *, struct in_addr);
extern int ospf_area_nssa_unset (struct ospf *, struct in_addr);
extern int ospf_area_nssa_translator_role_set (struct ospf *, struct in_addr,
int);
extern int ospf_area_export_list_set (struct ospf *, struct ospf_area *,
const char *);
extern int ospf_area_export_list_unset (struct ospf *, struct ospf_area *);
extern int ospf_area_import_list_set (struct ospf *, struct ospf_area *,
const char *);
extern int ospf_area_import_list_unset (struct ospf *, struct ospf_area *);
extern int ospf_area_shortcut_set (struct ospf *, struct ospf_area *, int);
extern int ospf_area_shortcut_unset (struct ospf *, struct ospf_area *);
extern int ospf_timers_refresh_set (struct ospf *, int);
extern int ospf_timers_refresh_unset (struct ospf *);
extern int ospf_nbr_nbma_set (struct ospf *, struct in_addr);
extern int ospf_nbr_nbma_unset (struct ospf *, struct in_addr);
extern int ospf_nbr_nbma_priority_set (struct ospf *, struct in_addr, u_char);
extern int ospf_nbr_nbma_priority_unset (struct ospf *, struct in_addr);
extern int ospf_nbr_nbma_poll_interval_set (struct ospf *, struct in_addr,
unsigned int);
extern int ospf_nbr_nbma_poll_interval_unset (struct ospf *, struct in_addr);
extern void ospf_prefix_list_update (struct prefix_list *);
extern void ospf_init (void);
extern void ospf_if_update (struct ospf *, struct interface *);
extern void ospf_ls_upd_queue_empty (struct ospf_interface *);
extern void ospf_terminate (void);
extern void ospf_nbr_nbma_if_update (struct ospf *, struct ospf_interface *);
extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup (struct ospf *,
struct in_addr);
extern struct ospf_nbr_nbma *ospf_nbr_nbma_lookup_next (struct ospf *,
struct in_addr *,
int);
extern int ospf_oi_count (struct interface *);
extern struct ospf_area *ospf_area_get (struct ospf *, struct in_addr, int);
extern void ospf_area_check_free (struct ospf *, struct in_addr);
extern struct ospf_area *ospf_area_lookup_by_area_id (struct ospf *,
struct in_addr);
extern void ospf_area_add_if (struct ospf_area *, struct ospf_interface *);
extern void ospf_area_del_if (struct ospf_area *, struct ospf_interface *);
extern void ospf_route_map_init (void);
extern void ospf_snmp_init (void);
extern void ospf_master_init (void);
#endif /* _ZEBRA_OSPFD_H */
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