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   /* Peer structure.  */
  33   struct peer *peer;
  34
  35   /* Attribute structure.  */
  36   struct attr *attr;
  37
  38   /* Pointer to dampening structure.  */
  39   struct bgp_damp_info *damp_info;
  40
  41   /* Uptime.  */
  42   time_t uptime;
  43
  44   /* This route is suppressed with aggregation.  */
  45   int suppress;
  46
  47   /* Nexthop reachability check.  */
  48   u_int32_t igpmetric;
  49
  50   /* reference count */
  51   unsigned int lock;
  52
  53   /* BGP information status.  */
  54   u_int16_t flags;
  55 #define BGP_INFO_IGP_CHANGED    (1 << 0)
  56 #define BGP_INFO_DAMPED         (1 << 1)
  57 #define BGP_INFO_HISTORY        (1 << 2)
  58 #define BGP_INFO_SELECTED       (1 << 3)
  59 #define BGP_INFO_VALID          (1 << 4)
  60 #define BGP_INFO_ATTR_CHANGED   (1 << 5)
  61 #define BGP_INFO_DMED_CHECK     (1 << 6)
  62 #define BGP_INFO_DMED_SELECTED  (1 << 7)
  63 #define BGP_INFO_STALE          (1 << 8)
  64 #define BGP_INFO_REMOVED        (1 << 9)
  65 #define BGP_INFO_COUNTED        (1 << 10)
  66
  67   /* MPLS label.  */
  68   u_char tag[3];
  69
  70   /* BGP route type.  This can be static, RIP, OSPF, BGP etc.  */
  71   u_char type;
  72
  73   /* When above type is BGP.  This sub type specify BGP sub type
  74      information.  */
  75   u_char sub_type;
  76 #define BGP_ROUTE_NORMAL       0
  77 #define BGP_ROUTE_STATIC       1
  78 #define BGP_ROUTE_AGGREGATE    2
  79 #define BGP_ROUTE_REDISTRIBUTE 3
  80 };
  81
  82 /* BGP static route configuration. */
  83 struct bgp_static
  84 {
  85   /* Backdoor configuration.  */
  86   int backdoor;
  87
  88   /* Import check status.  */
  89   u_char valid;
  90
  91   /* IGP metric. */
  92   u_int32_t igpmetric;
  93
  94   /* IGP nexthop. */
  95   struct in_addr igpnexthop;
  96
  97   /* BGP redistribute route-map.  */
  98   struct
  99   {
 100     char *name;
 101     struct route_map *map;
 102   } rmap;
 103
 104   /* MPLS label.  */
 105   u_char tag[3];
 106 };
 107
 108 #define DISTRIBUTE_IN_NAME(F)   ((F)->dlist[FILTER_IN].name)
 109 #define DISTRIBUTE_IN(F)        ((F)->dlist[FILTER_IN].alist)
 110 #define DISTRIBUTE_OUT_NAME(F)  ((F)->dlist[FILTER_OUT].name)
 111 #define DISTRIBUTE_OUT(F)       ((F)->dlist[FILTER_OUT].alist)
 112
 113 #define PREFIX_LIST_IN_NAME(F)  ((F)->plist[FILTER_IN].name)
 114 #define PREFIX_LIST_IN(F)       ((F)->plist[FILTER_IN].plist)
 115 #define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name)
 116 #define PREFIX_LIST_OUT(F)      ((F)->plist[FILTER_OUT].plist)
 117
 118 #define FILTER_LIST_IN_NAME(F)  ((F)->aslist[FILTER_IN].name)
 119 #define FILTER_LIST_IN(F)       ((F)->aslist[FILTER_IN].aslist)
 120 #define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name)
 121 #define FILTER_LIST_OUT(F)      ((F)->aslist[FILTER_OUT].aslist)
 122
 123 #define ROUTE_MAP_IN_NAME(F)    ((F)->map[RMAP_IN].name)
 124 #define ROUTE_MAP_IN(F)         ((F)->map[RMAP_IN].map)
 125 #define ROUTE_MAP_OUT_NAME(F)   ((F)->map[RMAP_OUT].name)
 126 #define ROUTE_MAP_OUT(F)        ((F)->map[RMAP_OUT].map)
 127
 128 #define ROUTE_MAP_IMPORT_NAME(F)    ((F)->map[RMAP_IMPORT].name)
 129 #define ROUTE_MAP_IMPORT(F)    ((F)->map[RMAP_IMPORT].map)
 130 #define ROUTE_MAP_EXPORT_NAME(F)    ((F)->map[RMAP_EXPORT].name)
 131 #define ROUTE_MAP_EXPORT(F)    ((F)->map[RMAP_EXPORT].map)
 132
 133 #define UNSUPPRESS_MAP_NAME(F)  ((F)->usmap.name)
 134 #define UNSUPPRESS_MAP(F)       ((F)->usmap.map)
 135
 136 /* Prototypes. */
 137 extern void bgp_route_init (void);
 138 extern void bgp_cleanup_routes (void);
 139 extern void bgp_announce_route (struct peer *, afi_t, safi_t);
 140 extern void bgp_announce_route_all (struct peer *);
 141 extern void bgp_default_originate (struct peer *, afi_t, safi_t, int);
 142 extern void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
 143 extern void bgp_soft_reconfig_rsclient (struct peer *, afi_t, safi_t);
 144 extern void bgp_check_local_routes_rsclient (struct peer *rsclient, afi_t afi, safi_t safi);
 145 extern void bgp_clear_route (struct peer *, afi_t, safi_t);
 146 extern void bgp_clear_route_all (struct peer *);
 147 extern void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
 148 extern void bgp_clear_stale_route (struct peer *, afi_t, safi_t);
 149
 150 extern struct bgp_info *bgp_info_lock (struct bgp_info *);
 151 extern struct bgp_info *bgp_info_unlock (struct bgp_info *);
 152 extern void bgp_info_add (struct bgp_node *rn, struct bgp_info *ri);
 153 extern void bgp_info_delete (struct bgp_node *rn, struct bgp_info *ri);
 154
 155 extern int bgp_nlri_sanity_check (struct peer *, int, u_char *, bgp_size_t);
 156 extern int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *);
 157
 158 extern int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
 159
 160 extern void bgp_redistribute_add (struct prefix *, struct in_addr *, u_int32_t, u_char);
 161 extern void bgp_redistribute_delete (struct prefix *, u_char);
 162 extern void bgp_redistribute_withdraw (struct bgp *, afi_t, int);
 163
 164 extern void bgp_static_delete (struct bgp *);
 165 extern void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
 166                         afi_t, safi_t);
 167 extern void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
 168
 169 extern int bgp_static_set_vpnv4 (struct vty *vty, const char *,
 170                           const char *, const char *);
 171
 172 extern int bgp_static_unset_vpnv4 (struct vty *, const char *,
 173                             const char *, const char *);
 174
 175 /* this is primarily for MPLS-VPN */
 176 extern int bgp_update (struct peer *, struct prefix *, struct attr *,
 177                        afi_t, safi_t, int, int, struct prefix_rd *,
 178                        u_char *, int);
 179 extern int bgp_withdraw (struct peer *, struct prefix *, struct attr *,
 180                          afi_t, safi_t, int, int, struct prefix_rd *, u_char *);
 181
 182 /* for bgp_nexthop and bgp_damp */
 183 extern void bgp_process (struct bgp *, struct bgp_node *, afi_t, safi_t);
 184 extern int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *);
 185 extern int bgp_config_write_distance (struct vty *, struct bgp *);
 186
 187 extern void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *,
 188                               afi_t, safi_t);
 189 extern void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *,
 190                               afi_t, safi_t);
 191
 192 extern u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
 193
 194 extern afi_t bgp_node_afi (struct vty *);
 195 extern safi_t bgp_node_safi (struct vty *);
 196
 197 extern void route_vty_out (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
 198 extern void route_vty_out_tag (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
 199 extern void route_vty_out_tmp (struct vty *, struct prefix *, struct attr *, safi_t);
 200
 201 #endif /* _QUAGGA_BGP_ROUTE_H */