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718e3744 | 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 | struct bgp_info | |
22 | { | |
23 | /* For linked list. */ | |
24 | struct bgp_info *next; | |
25 | struct bgp_info *prev; | |
26 | ||
27 | /* BGP route type. This can be static, RIP, OSPF, BGP etc. */ | |
28 | u_char type; | |
29 | ||
30 | /* When above type is BGP. This sub type specify BGP sub type | |
31 | information. */ | |
32 | u_char sub_type; | |
33 | #define BGP_ROUTE_NORMAL 0 | |
34 | #define BGP_ROUTE_STATIC 1 | |
35 | #define BGP_ROUTE_AGGREGATE 2 | |
36 | #define BGP_ROUTE_REDISTRIBUTE 3 | |
37 | ||
38 | /* BGP information status. */ | |
39 | u_char flags; | |
40 | #define BGP_INFO_IGP_CHANGED (1 << 0) | |
41 | #define BGP_INFO_DAMPED (1 << 1) | |
42 | #define BGP_INFO_HISTORY (1 << 2) | |
43 | #define BGP_INFO_SELECTED (1 << 3) | |
44 | #define BGP_INFO_VALID (1 << 4) | |
45 | #define BGP_INFO_ATTR_CHANGED (1 << 5) | |
46 | #define BGP_INFO_DMED_CHECK (1 << 6) | |
47 | #define BGP_INFO_DMED_SELECTED (1 << 7) | |
48 | ||
49 | /* Peer structure. */ | |
50 | struct peer *peer; | |
51 | ||
52 | /* Attribute structure. */ | |
53 | struct attr *attr; | |
54 | ||
55 | /* This route is suppressed with aggregation. */ | |
56 | int suppress; | |
57 | ||
58 | /* Nexthop reachability check. */ | |
59 | u_int32_t igpmetric; | |
60 | ||
61 | /* Uptime. */ | |
62 | time_t uptime; | |
63 | ||
64 | /* Pointer to dampening structure. */ | |
65 | struct bgp_damp_info *damp_info; | |
66 | ||
67 | /* MPLS label. */ | |
68 | u_char tag[3]; | |
69 | }; | |
70 | ||
71 | /* BGP static route configuration. */ | |
72 | struct bgp_static | |
73 | { | |
74 | /* Backdoor configuration. */ | |
75 | int backdoor; | |
76 | ||
77 | /* Import check status. */ | |
78 | u_char valid; | |
79 | ||
80 | /* IGP metric. */ | |
81 | u_int32_t igpmetric; | |
82 | ||
83 | /* IGP nexthop. */ | |
84 | struct in_addr igpnexthop; | |
85 | ||
86 | /* BGP redistribute route-map. */ | |
87 | struct | |
88 | { | |
89 | char *name; | |
90 | struct route_map *map; | |
91 | } rmap; | |
92 | ||
93 | /* MPLS label. */ | |
94 | u_char tag[3]; | |
95 | }; | |
96 | ||
97 | #define DISTRIBUTE_IN_NAME(F) ((F)->dlist[FILTER_IN].name) | |
98 | #define DISTRIBUTE_IN(F) ((F)->dlist[FILTER_IN].alist) | |
99 | #define DISTRIBUTE_OUT_NAME(F) ((F)->dlist[FILTER_OUT].name) | |
100 | #define DISTRIBUTE_OUT(F) ((F)->dlist[FILTER_OUT].alist) | |
101 | ||
102 | #define PREFIX_LIST_IN_NAME(F) ((F)->plist[FILTER_IN].name) | |
103 | #define PREFIX_LIST_IN(F) ((F)->plist[FILTER_IN].plist) | |
104 | #define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name) | |
105 | #define PREFIX_LIST_OUT(F) ((F)->plist[FILTER_OUT].plist) | |
106 | ||
107 | #define FILTER_LIST_IN_NAME(F) ((F)->aslist[FILTER_IN].name) | |
108 | #define FILTER_LIST_IN(F) ((F)->aslist[FILTER_IN].aslist) | |
109 | #define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name) | |
110 | #define FILTER_LIST_OUT(F) ((F)->aslist[FILTER_OUT].aslist) | |
111 | ||
fee0f4c6 | 112 | #define ROUTE_MAP_IN_NAME(F) ((F)->map[RMAP_IN].name) |
113 | #define ROUTE_MAP_IN(F) ((F)->map[RMAP_IN].map) | |
114 | #define ROUTE_MAP_OUT_NAME(F) ((F)->map[RMAP_OUT].name) | |
115 | #define ROUTE_MAP_OUT(F) ((F)->map[RMAP_OUT].map) | |
116 | ||
117 | #define ROUTE_MAP_IMPORT_NAME(F) ((F)->map[RMAP_IMPORT].name) | |
118 | #define ROUTE_MAP_IMPORT(F) ((F)->map[RMAP_IMPORT].map) | |
119 | #define ROUTE_MAP_EXPORT_NAME(F) ((F)->map[RMAP_EXPORT].name) | |
120 | #define ROUTE_MAP_EXPORT(F) ((F)->map[RMAP_EXPORT].map) | |
718e3744 | 121 | |
122 | #define UNSUPPRESS_MAP_NAME(F) ((F)->usmap.name) | |
123 | #define UNSUPPRESS_MAP(F) ((F)->usmap.map) | |
124 | ||
125 | /* Prototypes. */ | |
126 | void bgp_route_init (); | |
545acafb | 127 | void bgp_cleanup_routes (void); |
718e3744 | 128 | void bgp_announce_route (struct peer *, afi_t, safi_t); |
129 | void bgp_announce_route_all (struct peer *); | |
130 | void bgp_default_originate (struct peer *, afi_t, safi_t, int); | |
131 | void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t); | |
fee0f4c6 | 132 | void bgp_soft_reconfig_rsclient (struct peer *, afi_t, safi_t); |
133 | void bgp_check_local_routes_rsclient (struct peer *rsclient, afi_t afi, safi_t safi); | |
718e3744 | 134 | void bgp_clear_route (struct peer *, afi_t, safi_t); |
135 | void bgp_clear_route_all (struct peer *); | |
136 | void bgp_clear_adj_in (struct peer *, afi_t, safi_t); | |
137 | ||
138 | int bgp_nlri_sanity_check (struct peer *, int, u_char *, bgp_size_t); | |
139 | int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *); | |
140 | ||
e0701b79 | 141 | int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int); |
718e3744 | 142 | |
143 | void bgp_redistribute_add (struct prefix *, struct in_addr *, u_int32_t, u_char); | |
144 | void bgp_redistribute_delete (struct prefix *, u_char); | |
145 | void bgp_redistribute_withdraw (struct bgp *, afi_t, int); | |
146 | ||
147 | void bgp_static_delete (struct bgp *); | |
148 | void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *, | |
149 | afi_t, safi_t); | |
150 | void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t); | |
151 | ||
fd79ac91 | 152 | int bgp_static_set_vpnv4 (struct vty *vty, const char *, |
153 | const char *, const char *); | |
718e3744 | 154 | |
fd79ac91 | 155 | int bgp_static_unset_vpnv4 (struct vty *, const char *, |
156 | const char *, const char *); | |
718e3744 | 157 | |
158 | int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *); | |
159 | int bgp_config_write_distance (struct vty *, struct bgp *); | |
160 | ||
161 | void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *, | |
162 | afi_t, safi_t); | |
163 | void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *, | |
164 | afi_t, safi_t); | |
165 | ||
166 | u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *); | |
167 | ||
168 | afi_t bgp_node_afi (struct vty *); | |
169 | safi_t bgp_node_safi (struct vty *); |