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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 "bgp_table.h"
/* 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;
/* Peer structure. */
struct peer *peer;
/* Attribute structure. */
struct attr *attr;
/* Extra information */
struct bgp_info_extra *extra;
/* Uptime. */
time_t uptime;
/* reference count */
unsigned 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)
/* 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;
/* MPLS label. */
u_char tag[3];
/* AS-Pathlimit TTL */
u_char ttl;
};
/* 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)
/* Prototypes. */
extern void bgp_route_init (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);
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_sanity_check (struct peer *, int, u_char *, bgp_size_t);
extern int bgp_nlri_parse (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 *, struct in_addr *, u_int32_t, u_char);
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_vpnv4 (struct vty *vty, const char *,
const char *, const char *);
extern int bgp_static_unset_vpnv4 (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 *);
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 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);
#endif /* _QUAGGA_BGP_ROUTE_H */
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