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- /* BGP routing information base
- Copyright (C) 1996, 97, 98, 2000 Kunihiro Ishiguro
- 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 _QUAGGA_BGP_ROUTE_H
- #define _QUAGGA_BGP_ROUTE_H
- #include "queue.h"
- #include "bgp_table.h"
- struct bgp_nexthop_cache;
- /* Ancillary information to struct bgp_info,
- * used for uncommonly used data (aggregation, MPLS, etc.)
- * and lazily allocated to save memory.
- */
- struct bgp_info_extra
- {
- /* Pointer to dampening structure. */
- struct bgp_damp_info *damp_info;
- /* This route is suppressed with aggregation. */
- int suppress;
- /* Nexthop reachability check. */
- u_int32_t igpmetric;
- /* MPLS label. */
- u_char tag[3];
- };
- struct bgp_info
- {
- /* For linked list. */
- struct bgp_info *next;
- struct bgp_info *prev;
- /* For nexthop linked list */
- LIST_ENTRY(bgp_info) nh_thread;
- /* Back pointer to the prefix node */
- struct bgp_node *net;
- /* Back pointer to the nexthop structure */
- struct bgp_nexthop_cache *nexthop;
- /* Peer structure. */
- struct peer *peer;
- /* Attribute structure. */
- struct attr *attr;
-
- /* Extra information */
- struct bgp_info_extra *extra;
-
- /* Multipath information */
- struct bgp_info_mpath *mpath;
- /* Uptime. */
- time_t uptime;
- /* reference count */
- int lock;
-
- /* BGP information status. */
- u_int16_t flags;
- #define BGP_INFO_IGP_CHANGED (1 << 0)
- #define BGP_INFO_DAMPED (1 << 1)
- #define BGP_INFO_HISTORY (1 << 2)
- #define BGP_INFO_SELECTED (1 << 3)
- #define BGP_INFO_VALID (1 << 4)
- #define BGP_INFO_ATTR_CHANGED (1 << 5)
- #define BGP_INFO_DMED_CHECK (1 << 6)
- #define BGP_INFO_DMED_SELECTED (1 << 7)
- #define BGP_INFO_STALE (1 << 8)
- #define BGP_INFO_REMOVED (1 << 9)
- #define BGP_INFO_COUNTED (1 << 10)
- #define BGP_INFO_MULTIPATH (1 << 11)
- #define BGP_INFO_MULTIPATH_CHG (1 << 12)
- /* BGP route type. This can be static, RIP, OSPF, BGP etc. */
- u_char type;
- /* When above type is BGP. This sub type specify BGP sub type
- information. */
- u_char sub_type;
- #define BGP_ROUTE_NORMAL 0
- #define BGP_ROUTE_STATIC 1
- #define BGP_ROUTE_AGGREGATE 2
- #define BGP_ROUTE_REDISTRIBUTE 3
- };
- /* BGP static route configuration. */
- struct bgp_static
- {
- /* Backdoor configuration. */
- int backdoor;
- /* Import check status. */
- u_char valid;
- /* IGP metric. */
- u_int32_t igpmetric;
- /* IGP nexthop. */
- struct in_addr igpnexthop;
- /* Atomic set reference count (ie cause of pathlimit) */
- u_int32_t atomic;
-
- /* BGP redistribute route-map. */
- struct
- {
- char *name;
- struct route_map *map;
- } rmap;
- /* Route Distinguisher */
- struct prefix_rd prd;
- /* MPLS label. */
- u_char tag[3];
- };
- #define BGP_INFO_COUNTABLE(BI) \
- (! CHECK_FLAG ((BI)->flags, BGP_INFO_HISTORY) \
- && ! CHECK_FLAG ((BI)->flags, BGP_INFO_REMOVED))
- /* Flags which indicate a route is unuseable in some form */
- #define BGP_INFO_UNUSEABLE \
- (BGP_INFO_HISTORY|BGP_INFO_DAMPED|BGP_INFO_REMOVED)
- /* Macro to check BGP information is alive or not. Sadly,
- * not equivalent to just checking previous, because of the
- * sense of the additional VALID flag.
- */
- #define BGP_INFO_HOLDDOWN(BI) \
- (! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \
- || CHECK_FLAG ((BI)->flags, BGP_INFO_UNUSEABLE))
- #define DISTRIBUTE_IN_NAME(F) ((F)->dlist[FILTER_IN].name)
- #define DISTRIBUTE_IN(F) ((F)->dlist[FILTER_IN].alist)
- #define DISTRIBUTE_OUT_NAME(F) ((F)->dlist[FILTER_OUT].name)
- #define DISTRIBUTE_OUT(F) ((F)->dlist[FILTER_OUT].alist)
- #define PREFIX_LIST_IN_NAME(F) ((F)->plist[FILTER_IN].name)
- #define PREFIX_LIST_IN(F) ((F)->plist[FILTER_IN].plist)
- #define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name)
- #define PREFIX_LIST_OUT(F) ((F)->plist[FILTER_OUT].plist)
- #define FILTER_LIST_IN_NAME(F) ((F)->aslist[FILTER_IN].name)
- #define FILTER_LIST_IN(F) ((F)->aslist[FILTER_IN].aslist)
- #define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name)
- #define FILTER_LIST_OUT(F) ((F)->aslist[FILTER_OUT].aslist)
- #define ROUTE_MAP_IN_NAME(F) ((F)->map[RMAP_IN].name)
- #define ROUTE_MAP_IN(F) ((F)->map[RMAP_IN].map)
- #define ROUTE_MAP_OUT_NAME(F) ((F)->map[RMAP_OUT].name)
- #define ROUTE_MAP_OUT(F) ((F)->map[RMAP_OUT].map)
- #define ROUTE_MAP_IMPORT_NAME(F) ((F)->map[RMAP_IMPORT].name)
- #define ROUTE_MAP_IMPORT(F) ((F)->map[RMAP_IMPORT].map)
- #define ROUTE_MAP_EXPORT_NAME(F) ((F)->map[RMAP_EXPORT].name)
- #define ROUTE_MAP_EXPORT(F) ((F)->map[RMAP_EXPORT].map)
- #define UNSUPPRESS_MAP_NAME(F) ((F)->usmap.name)
- #define UNSUPPRESS_MAP(F) ((F)->usmap.map)
- enum bgp_clear_route_type
- {
- BGP_CLEAR_ROUTE_NORMAL,
- BGP_CLEAR_ROUTE_MY_RSCLIENT
- };
- enum bgp_path_type
- {
- BGP_PATH_ALL,
- BGP_PATH_BESTPATH,
- BGP_PATH_MULTIPATH
- };
- /* Prototypes. */
- extern void bgp_route_init (void);
- extern void bgp_route_finish (void);
- extern void bgp_cleanup_routes (void);
- extern void bgp_announce_route (struct peer *, afi_t, safi_t);
- extern void bgp_announce_route_all (struct peer *);
- extern void bgp_default_originate (struct peer *, afi_t, safi_t, int);
- extern void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
- extern void bgp_soft_reconfig_rsclient (struct peer *, afi_t, safi_t);
- extern void bgp_check_local_routes_rsclient (struct peer *rsclient, afi_t afi, safi_t safi);
- extern void bgp_clear_route (struct peer *, afi_t, safi_t,
- enum bgp_clear_route_type);
- extern void bgp_clear_route_all (struct peer *);
- extern void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
- extern void bgp_clear_stale_route (struct peer *, afi_t, safi_t);
- extern struct bgp_info *bgp_info_lock (struct bgp_info *);
- extern struct bgp_info *bgp_info_unlock (struct bgp_info *);
- extern void bgp_info_add (struct bgp_node *rn, struct bgp_info *ri);
- extern void bgp_info_delete (struct bgp_node *rn, struct bgp_info *ri);
- extern struct bgp_info_extra *bgp_info_extra_get (struct bgp_info *);
- extern void bgp_info_set_flag (struct bgp_node *, struct bgp_info *, u_int32_t);
- extern void bgp_info_unset_flag (struct bgp_node *, struct bgp_info *, u_int32_t);
- extern int bgp_nlri_parse_ip (struct peer *, struct attr *, struct bgp_nlri *);
- extern int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
- extern void bgp_redistribute_add (struct prefix *, const struct in_addr *,
- const struct in6_addr *,
- u_int32_t, u_char, route_tag_t);
- extern void bgp_redistribute_delete (struct prefix *, u_char);
- extern void bgp_redistribute_withdraw (struct bgp *, afi_t, int);
- extern void bgp_static_delete (struct bgp *);
- extern void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
- afi_t, safi_t);
- extern void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
-
- extern int bgp_static_set_safi (safi_t safi, struct vty *vty, const char *,
- const char *, const char *, const char *);
- extern int bgp_static_unset_safi (safi_t safi, struct vty *, const char *,
- const char *, const char *);
- /* this is primarily for MPLS-VPN */
- extern int bgp_update (struct peer *, struct prefix *, struct attr *,
- afi_t, safi_t, int, int, struct prefix_rd *,
- u_char *, int);
- extern int bgp_withdraw (struct peer *, struct prefix *, struct attr *,
- afi_t, safi_t, int, int, struct prefix_rd *, u_char *);
- /* for bgp_nexthop and bgp_damp */
- extern void bgp_process (struct bgp *, struct bgp_node *, afi_t, safi_t);
- extern int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *);
- extern int bgp_config_write_distance (struct vty *, struct bgp *, afi_t, safi_t, int *);
- extern void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *,
- afi_t, safi_t);
- extern void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *,
- afi_t, safi_t);
- extern u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
- extern u_char ipv6_bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
- extern afi_t bgp_node_afi (struct vty *);
- extern safi_t bgp_node_safi (struct vty *);
- extern void route_vty_out (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
- extern void route_vty_out_tag (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
- extern void route_vty_out_tmp (struct vty *, struct prefix *, struct attr *, safi_t);
- extern void bgp_peer_clear_node_queue_drain_immediate (struct peer *peer);
- extern void bgp_process_queues_drain_immediate (void);
- #endif /* _QUAGGA_BGP_ROUTE_H */
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