Annotation of embedaddon/quagga/bgpd/bgp_route.h, revision 1.1.1.2
1.1 misho 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: /* Ancillary information to struct bgp_info,
27: * used for uncommonly used data (aggregation, MPLS, etc.)
28: * and lazily allocated to save memory.
29: */
30: struct bgp_info_extra
31: {
32: /* Pointer to dampening structure. */
33: struct bgp_damp_info *damp_info;
34:
35: /* This route is suppressed with aggregation. */
36: int suppress;
37:
38: /* Nexthop reachability check. */
39: u_int32_t igpmetric;
40:
41: /* MPLS label. */
42: u_char tag[3];
43: };
44:
45: struct bgp_info
46: {
47: /* For linked list. */
48: struct bgp_info *next;
49: struct bgp_info *prev;
50:
51: /* Peer structure. */
52: struct peer *peer;
53:
54: /* Attribute structure. */
55: struct attr *attr;
56:
57: /* Extra information */
58: struct bgp_info_extra *extra;
59:
1.1.1.2 ! misho 60:
! 61: /* Multipath information */
! 62: struct bgp_info_mpath *mpath;
! 63:
1.1 misho 64: /* Uptime. */
65: time_t uptime;
66:
67: /* reference count */
68: int lock;
69:
70: /* BGP information status. */
71: u_int16_t flags;
72: #define BGP_INFO_IGP_CHANGED (1 << 0)
73: #define BGP_INFO_DAMPED (1 << 1)
74: #define BGP_INFO_HISTORY (1 << 2)
75: #define BGP_INFO_SELECTED (1 << 3)
76: #define BGP_INFO_VALID (1 << 4)
77: #define BGP_INFO_ATTR_CHANGED (1 << 5)
78: #define BGP_INFO_DMED_CHECK (1 << 6)
79: #define BGP_INFO_DMED_SELECTED (1 << 7)
80: #define BGP_INFO_STALE (1 << 8)
81: #define BGP_INFO_REMOVED (1 << 9)
82: #define BGP_INFO_COUNTED (1 << 10)
1.1.1.2 ! misho 83: #define BGP_INFO_MULTIPATH (1 << 11)
! 84: #define BGP_INFO_MULTIPATH_CHG (1 << 12)
1.1 misho 85:
86: /* BGP route type. This can be static, RIP, OSPF, BGP etc. */
87: u_char type;
88:
89: /* When above type is BGP. This sub type specify BGP sub type
90: information. */
91: u_char sub_type;
92: #define BGP_ROUTE_NORMAL 0
93: #define BGP_ROUTE_STATIC 1
94: #define BGP_ROUTE_AGGREGATE 2
95: #define BGP_ROUTE_REDISTRIBUTE 3
96: };
97:
98: /* BGP static route configuration. */
99: struct bgp_static
100: {
101: /* Backdoor configuration. */
102: int backdoor;
103:
104: /* Import check status. */
105: u_char valid;
106:
107: /* IGP metric. */
108: u_int32_t igpmetric;
109:
110: /* IGP nexthop. */
111: struct in_addr igpnexthop;
112:
113: /* Atomic set reference count (ie cause of pathlimit) */
114: u_int32_t atomic;
115:
116: /* BGP redistribute route-map. */
117: struct
118: {
119: char *name;
120: struct route_map *map;
121: } rmap;
122:
123: /* MPLS label. */
124: u_char tag[3];
125: };
126:
127: /* Flags which indicate a route is unuseable in some form */
128: #define BGP_INFO_UNUSEABLE \
129: (BGP_INFO_HISTORY|BGP_INFO_DAMPED|BGP_INFO_REMOVED)
130: /* Macro to check BGP information is alive or not. Sadly,
131: * not equivalent to just checking previous, because of the
132: * sense of the additional VALID flag.
133: */
134: #define BGP_INFO_HOLDDOWN(BI) \
135: (! CHECK_FLAG ((BI)->flags, BGP_INFO_VALID) \
136: || CHECK_FLAG ((BI)->flags, BGP_INFO_UNUSEABLE))
137:
138: #define DISTRIBUTE_IN_NAME(F) ((F)->dlist[FILTER_IN].name)
139: #define DISTRIBUTE_IN(F) ((F)->dlist[FILTER_IN].alist)
140: #define DISTRIBUTE_OUT_NAME(F) ((F)->dlist[FILTER_OUT].name)
141: #define DISTRIBUTE_OUT(F) ((F)->dlist[FILTER_OUT].alist)
142:
143: #define PREFIX_LIST_IN_NAME(F) ((F)->plist[FILTER_IN].name)
144: #define PREFIX_LIST_IN(F) ((F)->plist[FILTER_IN].plist)
145: #define PREFIX_LIST_OUT_NAME(F) ((F)->plist[FILTER_OUT].name)
146: #define PREFIX_LIST_OUT(F) ((F)->plist[FILTER_OUT].plist)
147:
148: #define FILTER_LIST_IN_NAME(F) ((F)->aslist[FILTER_IN].name)
149: #define FILTER_LIST_IN(F) ((F)->aslist[FILTER_IN].aslist)
150: #define FILTER_LIST_OUT_NAME(F) ((F)->aslist[FILTER_OUT].name)
151: #define FILTER_LIST_OUT(F) ((F)->aslist[FILTER_OUT].aslist)
152:
153: #define ROUTE_MAP_IN_NAME(F) ((F)->map[RMAP_IN].name)
154: #define ROUTE_MAP_IN(F) ((F)->map[RMAP_IN].map)
155: #define ROUTE_MAP_OUT_NAME(F) ((F)->map[RMAP_OUT].name)
156: #define ROUTE_MAP_OUT(F) ((F)->map[RMAP_OUT].map)
157:
158: #define ROUTE_MAP_IMPORT_NAME(F) ((F)->map[RMAP_IMPORT].name)
159: #define ROUTE_MAP_IMPORT(F) ((F)->map[RMAP_IMPORT].map)
160: #define ROUTE_MAP_EXPORT_NAME(F) ((F)->map[RMAP_EXPORT].name)
161: #define ROUTE_MAP_EXPORT(F) ((F)->map[RMAP_EXPORT].map)
162:
163: #define UNSUPPRESS_MAP_NAME(F) ((F)->usmap.name)
164: #define UNSUPPRESS_MAP(F) ((F)->usmap.map)
165:
166: enum bgp_clear_route_type
167: {
168: BGP_CLEAR_ROUTE_NORMAL,
169: BGP_CLEAR_ROUTE_MY_RSCLIENT
170: };
171:
172: /* Prototypes. */
173: extern void bgp_route_init (void);
174: extern void bgp_route_finish (void);
175: extern void bgp_cleanup_routes (void);
176: extern void bgp_announce_route (struct peer *, afi_t, safi_t);
177: extern void bgp_announce_route_all (struct peer *);
178: extern void bgp_default_originate (struct peer *, afi_t, safi_t, int);
179: extern void bgp_soft_reconfig_in (struct peer *, afi_t, safi_t);
180: extern void bgp_soft_reconfig_rsclient (struct peer *, afi_t, safi_t);
181: extern void bgp_check_local_routes_rsclient (struct peer *rsclient, afi_t afi, safi_t safi);
182: extern void bgp_clear_route (struct peer *, afi_t, safi_t,
183: enum bgp_clear_route_type);
184: extern void bgp_clear_route_all (struct peer *);
185: extern void bgp_clear_adj_in (struct peer *, afi_t, safi_t);
186: extern void bgp_clear_stale_route (struct peer *, afi_t, safi_t);
187:
188: extern struct bgp_info *bgp_info_lock (struct bgp_info *);
189: extern struct bgp_info *bgp_info_unlock (struct bgp_info *);
190: extern void bgp_info_add (struct bgp_node *rn, struct bgp_info *ri);
191: extern void bgp_info_delete (struct bgp_node *rn, struct bgp_info *ri);
192: extern struct bgp_info_extra *bgp_info_extra_get (struct bgp_info *);
193: extern void bgp_info_set_flag (struct bgp_node *, struct bgp_info *, u_int32_t);
194: extern void bgp_info_unset_flag (struct bgp_node *, struct bgp_info *, u_int32_t);
195:
196: extern int bgp_nlri_sanity_check (struct peer *, int, u_char *, bgp_size_t);
197: extern int bgp_nlri_parse (struct peer *, struct attr *, struct bgp_nlri *);
198:
199: extern int bgp_maximum_prefix_overflow (struct peer *, afi_t, safi_t, int);
200:
1.1.1.2 ! misho 201: extern void bgp_redistribute_add (struct prefix *, const struct in_addr *,
! 202: const struct in6_addr *,
! 203: u_int32_t, u_char);
1.1 misho 204: extern void bgp_redistribute_delete (struct prefix *, u_char);
205: extern void bgp_redistribute_withdraw (struct bgp *, afi_t, int);
206:
207: extern void bgp_static_delete (struct bgp *);
208: extern void bgp_static_update (struct bgp *, struct prefix *, struct bgp_static *,
209: afi_t, safi_t);
210: extern void bgp_static_withdraw (struct bgp *, struct prefix *, afi_t, safi_t);
211:
212: extern int bgp_static_set_vpnv4 (struct vty *vty, const char *,
213: const char *, const char *);
214:
215: extern int bgp_static_unset_vpnv4 (struct vty *, const char *,
216: const char *, const char *);
217:
218: /* this is primarily for MPLS-VPN */
219: extern int bgp_update (struct peer *, struct prefix *, struct attr *,
220: afi_t, safi_t, int, int, struct prefix_rd *,
221: u_char *, int);
222: extern int bgp_withdraw (struct peer *, struct prefix *, struct attr *,
223: afi_t, safi_t, int, int, struct prefix_rd *, u_char *);
224:
225: /* for bgp_nexthop and bgp_damp */
226: extern void bgp_process (struct bgp *, struct bgp_node *, afi_t, safi_t);
227: extern int bgp_config_write_network (struct vty *, struct bgp *, afi_t, safi_t, int *);
228: extern int bgp_config_write_distance (struct vty *, struct bgp *);
229:
230: extern void bgp_aggregate_increment (struct bgp *, struct prefix *, struct bgp_info *,
231: afi_t, safi_t);
232: extern void bgp_aggregate_decrement (struct bgp *, struct prefix *, struct bgp_info *,
233: afi_t, safi_t);
234:
235: extern u_char bgp_distance_apply (struct prefix *, struct bgp_info *, struct bgp *);
236:
237: extern afi_t bgp_node_afi (struct vty *);
238: extern safi_t bgp_node_safi (struct vty *);
239:
240: extern void route_vty_out (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
241: extern void route_vty_out_tag (struct vty *, struct prefix *, struct bgp_info *, int, safi_t);
242: extern void route_vty_out_tmp (struct vty *, struct prefix *, struct attr *, safi_t);
243:
244: #endif /* _QUAGGA_BGP_ROUTE_H */
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