1 /* RIP related values and structures.
2 * Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
4 * This file is part of GNU Zebra.
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
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.
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
25 /* RIP version number. */
28 /* N.B. stuff will break if
29 (RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */
32 /* RIP command list. */
34 #define RIP_RESPONSE 2
35 #define RIP_TRACEON 3 /* Obsolete */
36 #define RIP_TRACEOFF 4 /* Obsolete */
38 #define RIP_POLL_ENTRY 6
39 #define RIP_COMMAND_MAX 7
41 /* RIP metric infinity value.*/
42 #define RIP_METRIC_INFINITY 16
44 /* Normal RIP packet min and max size. */
45 #define RIP_PACKET_MINSIZ 4
46 #define RIP_PACKET_MAXSIZ 512
48 #define RIP_HEADER_SIZE 4
49 #define RIP_RTE_SIZE 20
51 /* Max count of routing table entry in one rip packet. */
52 #define RIP_MAX_RTE ((RIP_PACKET_MAXSIZ - RIP_HEADER_SIZE) / RIP_RTE_SIZE)
54 /* RIP version 2 multicast address. */
55 #ifndef INADDR_RIP_GROUP
56 #define INADDR_RIP_GROUP 0xe0000009 /* 224.0.0.9 */
60 #define RIP_UPDATE_TIMER_DEFAULT 30
61 #define RIP_TIMEOUT_TIMER_DEFAULT 180
62 #define RIP_GARBAGE_TIMER_DEFAULT 120
64 /* RIP peer timeout value. */
65 #define RIP_PEER_TIMER_DEFAULT 180
67 /* RIP port number. */
68 #define RIP_PORT_DEFAULT 520
69 #define RIP_VTY_PORT 2602
71 /* Default configuration file name. */
72 #define RIPD_DEFAULT_CONFIG "ripd.conf"
74 /* RIP route types. */
75 #define RIP_ROUTE_RTE 0
76 #define RIP_ROUTE_STATIC 1
77 #define RIP_ROUTE_DEFAULT 2
78 #define RIP_ROUTE_REDISTRIBUTE 3
79 #define RIP_ROUTE_INTERFACE 4
81 /* RIPv2 special RTE family types */
82 #define RIP_FAMILY_AUTH 0xffff
84 /* RIPv2 authentication types, for RIP_FAMILY_AUTH RTE's */
86 #define RIP_AUTH_DATA 1
87 #define RIP_AUTH_SIMPLE_PASSWORD 2
88 #define RIP_AUTH_MD5 3
90 /* RIPv2 Simple authentication */
91 #define RIP_AUTH_SIMPLE_SIZE 16
93 /* RIPv2 MD5 authentication. */
94 #define RIP_AUTH_MD5_SIZE 16
95 #define RIP_AUTH_MD5_COMPAT_SIZE RIP_RTE_SIZE
103 /* Default version of rip instance. */
104 int version_send; /* version 1 or 2 (but not both) */
105 int version_recv; /* version 1 or 2 or both */
107 /* Output buffer of RIP. */
110 /* RIP routing information base. */
111 struct route_table *table;
113 /* RIP only static routing information. */
114 struct route_table *route;
117 struct route_table *neighbor;
120 struct thread *t_read;
122 /* Update and garbage timer. */
123 struct thread *t_update;
125 /* Triggered update hack. */
127 struct thread *t_triggered_update;
128 struct thread *t_triggered_interval;
130 /* RIP timer values. */
131 unsigned long update_time;
132 unsigned long timeout_time;
133 unsigned long garbage_time;
135 /* RIP default metric. */
138 /* RIP default-information originate. */
139 u_char default_information;
140 char *default_information_route_map;
142 /* RIP default distance. */
144 struct route_table *distance_table;
149 /* For redistribute route map. */
153 struct route_map *map;
156 } route_map[ZEBRA_ROUTE_MAX];
159 /* RIP routing table entry which belong to rip_packet. */
162 u_int16_t family; /* Address family of this route. */
163 u_int16_t tag; /* Route Tag which included in RIP2 packet. */
164 struct in_addr prefix; /* Prefix of rip route. */
165 struct in_addr mask; /* Netmask of rip route. */
166 struct in_addr nexthop; /* Next hop of rip route. */
167 u_int32_t metric; /* Metric value of rip route. */
170 /* RIP packet structure. */
173 unsigned char command; /* Command type of RIP packet. */
174 unsigned char version; /* RIP version which coming from peer. */
175 unsigned char pad1; /* Padding of RIP packet header. */
176 unsigned char pad2; /* Same as above. */
177 struct rte rte[1]; /* Address structure. */
180 /* Buffer to read RIP packet. */
183 struct rip_packet rip_packet;
184 char buf[RIP_PACKET_MAXSIZ];
187 /* RIP route information. */
190 /* This route's type. */
197 struct in_addr nexthop;
200 /* Which interface does this route come from. */
203 /* Metric of this route. */
206 /* External metric of this route.
207 if learnt from an externalm proto */
208 u_int32_t external_metric;
210 /* Tag information of this route. */
213 /* Flags of RIP route. */
214 #define RIP_RTF_FIB 1
215 #define RIP_RTF_CHANGED 2
218 /* Garbage collect timer. */
219 struct thread *t_timeout;
220 struct thread *t_garbage_collect;
222 /* Route-map futures - this variables can be changed. */
223 struct in_addr nexthop_out;
225 u_int32_t metric_out;
227 ifindex_t ifindex_out;
229 struct route_node *rp;
234 struct rip_info *next;
235 struct rip_info *prev;
236 #endif /* NEW_RIP_TABLE */
240 RIP_NO_SPLIT_HORIZON = 0,
242 RIP_SPLIT_HORIZON_POISONED_REVERSE
243 } split_horizon_policy_t;
245 /* RIP specific interface configuration. */
248 /* RIP is enabled on this interface. */
250 int enable_interface;
252 /* RIP is running on this interface. */
255 /* RIP version control. */
259 /* RIPv2 authentication type. */
262 /* RIPv2 authentication string. */
265 /* RIPv2 authentication key chain. */
268 /* value to use for md5->auth_len */
269 u_int8_t md5_auth_len;
271 /* Split horizon flag. */
272 split_horizon_policy_t split_horizon;
273 split_horizon_policy_t split_horizon_default;
275 /* For filter type slot. */
276 #define RIP_FILTER_IN 0
277 #define RIP_FILTER_OUT 1
278 #define RIP_FILTER_MAX 2
281 struct access_list *list[RIP_FILTER_MAX];
284 struct prefix_list *prefix[RIP_FILTER_MAX];
287 struct route_map *routemap[RIP_FILTER_MAX];
289 /* Wake up thread. */
290 struct thread *t_wakeup;
292 /* Interface statistics. */
297 /* Passive interface. */
301 /* RIP peer information. */
307 /* Peer RIP tag value. */
310 /* Last update time. */
313 /* Peer RIP version. */
320 /* Timeout thread. */
321 struct thread *t_timeout;
328 u_int16_t packet_len;
343 /* RIP accepet/announce methods. */
344 #define RI_RIP_UNSPEC 0
345 #define RI_RIP_VERSION_1 1
346 #define RI_RIP_VERSION_2 2
347 #define RI_RIP_VERSION_1_AND_2 3
348 /* N.B. stuff will break if
349 (RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */
351 /* Default value for "default-metric" command. */
352 #define RIP_DEFAULT_METRIC_DEFAULT 1
359 RIP_TRIGGERED_UPDATE,
362 /* Macro for timer turn on. */
363 #define RIP_TIMER_ON(T,F,V) \
366 (T) = thread_add_timer (master, (F), rinfo, (V)); \
369 /* Macro for timer turn off. */
370 #define RIP_TIMER_OFF(X) \
380 extern void rip_init (void);
381 extern void rip_reset (void);
382 extern void rip_clean (void);
383 extern void rip_clean_network (void);
384 extern void rip_interfaces_clean (void);
385 extern void rip_interfaces_reset (void);
386 extern void rip_passive_nondefault_clean (void);
387 extern void rip_if_init (void);
388 extern void rip_if_down_all (void);
389 extern void rip_route_map_init (void);
390 extern void rip_route_map_reset (void);
391 extern void rip_snmp_init (void);
392 extern void rip_zclient_init (struct thread_master *);
393 extern void rip_zclient_start (void);
394 extern void rip_zclient_reset (void);
395 extern void rip_offset_init (void);
396 extern int if_check_address (struct in_addr addr);
398 extern int rip_request_send (struct sockaddr_in *, struct interface *, u_char,
400 extern int rip_neighbor_lookup (struct sockaddr_in *);
402 extern int rip_redistribute_check (int);
403 extern void rip_redistribute_add (int, int, struct prefix_ipv4 *, ifindex_t,
404 struct in_addr *, unsigned int, unsigned char,
406 extern void rip_redistribute_delete (int, int, struct prefix_ipv4 *, ifindex_t);
407 extern void rip_redistribute_withdraw (int);
408 extern void rip_zebra_ipv4_add (struct route_node *);
409 extern void rip_zebra_ipv4_delete (struct route_node *);
410 extern void rip_interface_multicast_set (int, struct connected *);
411 extern void rip_distribute_update_interface (struct interface *);
412 extern void rip_if_rmap_update_interface (struct interface *);
414 extern int config_write_rip_network (struct vty *, int);
415 extern int config_write_rip_offset_list (struct vty *);
416 extern int config_write_rip_redistribute (struct vty *, int);
418 extern void rip_peer_init (void);
419 extern void rip_peer_update (struct sockaddr_in *, u_char);
420 extern void rip_peer_bad_route (struct sockaddr_in *);
421 extern void rip_peer_bad_packet (struct sockaddr_in *);
422 extern void rip_peer_display (struct vty *);
423 extern struct rip_peer *rip_peer_lookup (struct in_addr *);
424 extern struct rip_peer *rip_peer_lookup_next (struct in_addr *);
426 extern int rip_offset_list_apply_in (struct prefix_ipv4 *, struct interface *, u_int32_t *);
427 extern int rip_offset_list_apply_out (struct prefix_ipv4 *, struct interface *, u_int32_t *);
428 extern void rip_offset_clean (void);
430 extern void rip_info_free (struct rip_info *);
431 extern u_char rip_distance_apply (struct rip_info *);
432 extern void rip_redistribute_clean (void);
433 extern void rip_ifaddr_add (struct interface *, struct connected *);
434 extern void rip_ifaddr_delete (struct interface *, struct connected *);
436 extern struct rip_info *rip_ecmp_add (struct rip_info *);
437 extern struct rip_info *rip_ecmp_replace (struct rip_info *);
438 extern struct rip_info *rip_ecmp_delete (struct rip_info *);
440 /* There is only one rip strucutre. */
441 extern struct rip *rip;
443 /* Master thread strucutre. */
444 extern struct thread_master *master;
446 /* RIP statistics for SNMP. */
447 extern long rip_global_route_changes;
448 extern long rip_global_queries;
449 #endif /* _ZEBRA_RIP_H */