bgpd/bgp_route.h

   1 /* BGP routing information base
   2    Copyright (C) 1996, 97, 98, 2000 Kunihiro Ishiguro
   3
   4 This file is part of GNU Zebra.
   5
   6 GNU Zebra is free software; you can redistribute it and/or modify it
   7 under the terms of the GNU General Public License as published by the
   8 Free Software Foundation; either version 2, or (at your option) any
   9 later version.
  10
  11 GNU Zebra is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Zebra; see the file COPYING.  If not, write to the Free
  18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19 02111-1307, USA.  */
  20
  21 #ifndef _QUAGGA_BGP_ROUTE_H
  22 #define _QUAGGA_BGP_ROUTE_H
  23
  24 #include "bgp_table.h"
  25
  26 struct bgp_info
  27 {
  28   /* For linked list. */
  29   struct bgp_info *next;
  30   struct bgp_info *prev;
  31
  32   /* reference count */
  33   unsigned int lock;
  34
  35   /* BGP route type.  This can be static, RIP, OSPF, BGP etc.  */
  36   u_char type;
  37
  38   /* When above type is BGP.  This sub type specify BGP sub type
  39      information.  */
  40   u_char sub_type;
  41 #define BGP_ROUTE_NORMAL       0
  42 #define BGP_ROUTE_STATIC       1
  43 #define BGP_ROUTE_AGGREGATE    2
  44 #define BGP_ROUTE_REDISTRIBUTE 3
  45
  46   /* BGP information status.  */
  47   u_int16_t flags;
  48 #define BGP_INFO_IGP_CHANGED    (1 << 0)
  49 #define BGP_INFO_DAMPED         (1 << 1)
  50 #define BGP_INFO_HISTORY        (1 << 2)
  51 #define BGP_INFO_SELECTED       (1 << 3)
  52 #define BGP_INFO_VALID          (1 << 4)
  53 #define BGP_INFO_ATTR_CHANGED   (1 << 5)
  54 #define BGP_INFO_DMED_CHECK     (1 << 6)
  55 #define BGP_INFO_DMED_SELECTED  (1 << 7)
  56 #define BGP_INFO_STALE          (1 << 8)
  57 #define BGP_INFO_REMOVED        (1 << 9)
  58
  59   /* Peer structure.  */
  60   struct peer *peer;
  61
  62   /* Attribute structure.  */
  63   struct attr *attr;
  64
  65   /* This route is suppressed with aggregation.  */
  66   int suppress;
  67
  68   /* Nexthop reachability check.  */
  69   u_int32_t igpmetric;
  70
  71   /* Uptime.  */
  72   time_t uptime;
  73
  74   /* Pointer to dampening structure.  */
  75   struct bgp_damp_info *damp_info;
  76
  77   /* MPLS label.  */
  78   u_char tag[3];
  79 };
  80
  81 /* BGP static route configuration. */
  82 struct bgp_static
  83 {
  84   /* Backdoor configuration.  */
  85   int backdoor;
  86
  87   /* Import check status.  */
  88   u_char valid;
  89
  90   /* IGP metric. */
  91   u_int32_t igpmetric;
  92
  93   /* IGP nexthop. */
  94   struct in_addr igpnexthop;
  95
  96   /* BGP redistribute route-map.  */
  97   struct
  98   {
  99     char *name;
 100     struct route_map *map;
 101   } rmap;
 102
 103   /* MPLS label.  */
 104   u_char tag[3];
 105 };
 106
 107 #define DISTRIBUTE_IN_NAME(F)   ((F)->dlist[FILTER_IN].name)
 108 #define DISTRIBUTE_IN(F)        ((F)->dlist[FILTER_IN].alist)
 109 #define DISTRIBUTE_OUT_NAME(F)  ((F)->dlist[FILTER_OUT].name)
 110 #define DISTRIBUTE_OUT(F)       ((F)->dlist[FILTER_OUT].alist)
 111
 112 #define PREFIX_LIST_IN_NAME(F)  ((F)->plist[FILTER_IN].name)
 113 #define PREFIX_LIST_IN(F)       ((F)->plist[FILTER_IN].plist)
 114 #define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name)
 115 #define PREFIX_LIST_OUT(F)      ((F)->plist[FILTER_OUT].plist)
 116
 117 #define FILTER_LIST_IN_NAME(F)  ((F)->aslist[FILTER_IN].name)
 118 #define FILTER_LIST_IN(F)       ((F)->aslist[FILTER_IN].aslist)
 119 #define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name)
 120 #define FILTER_LIST_OUT(F)      ((F)->aslist[FILTER_OUT].aslist)
 121
 122 #define ROUTE_MAP_IN_NAME(F)    ((F)->map[RMAP_IN].name)
 123 #define ROUTE_MAP_IN(F)         ((F)->map[RMAP_IN].map)
 124 #define ROUTE_MAP_OUT_NAME(F)   ((F)->map[RMAP_OUT].name)
 125 #define ROUTE_MAP_OUT(F)        ((F)->map[RMAP_OUT].map)
 126
 127 #define ROUTE_MAP_IMPORT_NAME(F)    ((F)->map[RMAP_IMPORT].name)
 128 #define ROUTE_MAP_IMPORT(F)    ((F)->map[RMAP_IMPORT].map)
 129 #define ROUTE_MAP_EXPORT_NAME(F)    ((F)->map[RMAP_EXPORT].name)
 130 #define ROUTE_MAP_EXPORT(F)    ((F)->map[RMAP_EXPORT].map)
 131
 132 #define UNSUPPRESS_MAP_NAME(F)  ((F)->usmap.name)
 133 #define UNSUPPRESS_MAP(F)       ((F)->usmap.map)
 134
 135 /* Prototypes. */
 136 extern void bgp_route_init (void);
 137 extern void bgp_cleanup_routes (void);
 138 extern void bgp_announce_route (struct peer *, afi_t, safi_t);
 139 extern void bgp_announce_route_all (struct peer *);
 140 extern void bgp_default_originate (struct peer *, afi_t, safi_t, int);
 141 extern void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
 142 extern void bgp_soft_reconfig_rsclient (struct peer *, afi_t, safi_t);
 143 extern void bgp_check_local_routes_rsclient (struct peer *rsclient, afi_t afi, safi_t safi);
 144 extern void bgp_clear_route (struct peer *, afi_t, safi_t);
 145 extern void bgp_clear_route_all (struct peer *);
 146 extern void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
 147 extern void bgp_clear_stale_route (struct peer *, afi_t, safi_t);
 148
 149 extern struct bgp_info *bgp_info_lock (struct bgp_info *);
 150 extern struct bgp_info *bgp_info_unlock (struct bgp_info *);
 151 extern void bgp_info_add (struct bgp_node *rn, struct bgp_info *ri);
 152 extern void bgp_info_delete (struct bgp_node *rn, struct bgp_info *ri);
 153
 154 extern int bgp_nlri_sanity_check (struct peer *, int, u_char *, bgp_size_t);
 155 extern int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *);
 156
 157 extern int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
 158
 159 extern void bgp_redistribute_add (struct prefix *, struct in_addr *, u_int32_t, u_char);
 160 extern void bgp_redistribute_delete (struct prefix *, u_char);
 161 extern void bgp_redistribute_withdraw (struct bgp *, afi_t, int);
 162
 163 extern void bgp_static_delete (struct bgp *);
 164 extern void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
 165                         afi_t, safi_t);
 166 extern void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
 167
 168 extern int bgp_static_set_vpnv4 (struct vty *vty, const char *,
 169                           const char *, const char *);
 170
 171 extern int bgp_static_unset_vpnv4 (struct vty *, const char *,
 172                             const char *, const char *);
 173
 174 /* this is primarily for MPLS-VPN */
 175 extern int bgp_update (struct peer *, struct prefix *, struct attr *,
 176                        afi_t, safi_t, int, int, struct prefix_rd *,
 177                        u_char *, int);
 178 extern int bgp_withdraw (struct peer *, struct prefix *, struct attr *,
 179                          afi_t, safi_t, int, int, struct prefix_rd *, u_char *);
 180
 181 /* for bgp_nexthop and bgp_damp */
 182 extern void bgp_process (struct bgp *, struct bgp_node *, afi_t, safi_t);
 183 extern int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *);
 184 extern int bgp_config_write_distance (struct vty *, struct bgp *);
 185
 186 extern void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *,
 187                               afi_t, safi_t);
 188 extern void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *,
 189                               afi_t, safi_t);
 190
 191 extern u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
 192
 193 extern afi_t bgp_node_afi (struct vty *);
 194 extern safi_t bgp_node_safi (struct vty *);
 195
 196 extern void route_vty_out (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
 197 extern void route_vty_out_tag (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
 198 extern void route_vty_out_tmp (struct vty *, struct prefix *, struct attr *, safi_t);
 199
 200 #endif /* _QUAGGA_BGP_ROUTE_H */