bgp_route.h
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上传日期:2009-11-15
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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. */
- struct bgp_info
- {
- /* For linked list. */
- struct bgp_info *next;
- struct bgp_info *prev;
- /* 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 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)
- /* Peer structure. */
- struct peer *peer;
- /* Attribute structure. */
- struct attr *attr;
- /* This route is suppressed with aggregation. */
- int suppress;
-
- /* Nexthop reachability check. */
- u_int32_t igpmetric;
- /* Uptime. */
- time_t uptime;
- /* Pointer to dampening structure. */
- struct bgp_damp_info *damp_info;
- /* MPLS label. */
- u_char tag[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;
- /* BGP redistribute route-map. */
- struct
- {
- char *name;
- struct route_map *map;
- } rmap;
- /* MPLS label. */
- u_char tag[3];
- };
- #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[FILTER_IN].name)
- #define ROUTE_MAP_IN(F) ((F)->map[FILTER_IN].map)
- #define ROUTE_MAP_OUT_NAME(F) ((F)->map[FILTER_OUT].name)
- #define ROUTE_MAP_OUT(F) ((F)->map[FILTER_OUT].map)
- #define UNSUPPRESS_MAP_NAME(F) ((F)->usmap.name)
- #define UNSUPPRESS_MAP(F) ((F)->usmap.map)
- /* Prototypes. */
- void bgp_route_init ();
- void bgp_announce_route (struct peer *, afi_t, safi_t);
- void bgp_announce_route_all (struct peer *);
- void bgp_default_originate (struct peer *, afi_t, safi_t, int);
- void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
- void bgp_clear_route (struct peer *, afi_t, safi_t);
- void bgp_clear_route_all (struct peer *);
- void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
- void bgp_clear_stale_route (struct peer *, afi_t, safi_t);
- int bgp_nlri_sanity_check (struct peer *, int, u_char *, bgp_size_t);
- int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *);
- int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
- void bgp_redistribute_add (struct prefix *, struct in_addr *, u_int32_t, u_char);
- void bgp_redistribute_delete (struct prefix *, u_char);
- void bgp_redistribute_withdraw (struct bgp *, afi_t, int);
- void bgp_static_delete (struct bgp *);
- void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
- afi_t, safi_t);
- void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
-
- int bgp_static_set_vpnv4 (struct vty *vty, char *, char *, char *);
- int bgp_static_unset_vpnv4 (struct vty *, char *, char *, char *);
- int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *);
- int bgp_config_write_distance (struct vty *, struct bgp *);
- void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *,
- afi_t, safi_t);
- void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *,
- afi_t, safi_t);
- u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
- afi_t bgp_node_afi (struct vty *);
- safi_t bgp_node_safi (struct vty *);