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 #include "rip_memory.h"
27 /* RIP version number. */
30 /* N.B. stuff will break if
31 (RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */
34 /* RIP command list. */
36 #define RIP_RESPONSE 2
37 #define RIP_TRACEON 3 /* Obsolete */
38 #define RIP_TRACEOFF 4 /* Obsolete */
40 #define RIP_POLL_ENTRY 6
41 #define RIP_COMMAND_MAX 7
43 /* RIP metric infinity value.*/
44 #define RIP_METRIC_INFINITY 16
46 /* Normal RIP packet min and max size. */
47 #define RIP_PACKET_MINSIZ 4
48 #define RIP_PACKET_MAXSIZ 512
50 #define RIP_HEADER_SIZE 4
51 #define RIP_RTE_SIZE 20
53 /* Max count of routing table entry in one rip packet. */
54 #define RIP_MAX_RTE ((RIP_PACKET_MAXSIZ - RIP_HEADER_SIZE) / RIP_RTE_SIZE)
56 /* RIP version 2 multicast address. */
57 #ifndef INADDR_RIP_GROUP
58 #define INADDR_RIP_GROUP 0xe0000009 /* 224.0.0.9 */
62 #define RIP_UPDATE_TIMER_DEFAULT 30
63 #define RIP_TIMEOUT_TIMER_DEFAULT 180
64 #define RIP_GARBAGE_TIMER_DEFAULT 120
66 /* RIP peer timeout value. */
67 #define RIP_PEER_TIMER_DEFAULT 180
69 /* RIP port number. */
70 #define RIP_PORT_DEFAULT 520
71 #define RIP_VTY_PORT 2602
73 /* Default configuration file name. */
74 #define RIPD_DEFAULT_CONFIG "ripd.conf"
76 /* RIP route types. */
77 #define RIP_ROUTE_RTE 0
78 #define RIP_ROUTE_STATIC 1
79 #define RIP_ROUTE_DEFAULT 2
80 #define RIP_ROUTE_REDISTRIBUTE 3
81 #define RIP_ROUTE_INTERFACE 4
83 /* RIPv2 special RTE family types */
84 #define RIP_FAMILY_AUTH 0xffff
86 /* RIPv2 authentication types, for RIP_FAMILY_AUTH RTE's */
88 #define RIP_AUTH_DATA 1
89 #define RIP_AUTH_SIMPLE_PASSWORD 2
90 #define RIP_AUTH_MD5 3
92 /* RIPv2 Simple authentication */
93 #define RIP_AUTH_SIMPLE_SIZE 16
95 /* RIPv2 MD5 authentication. */
96 #define RIP_AUTH_MD5_SIZE 16
97 #define RIP_AUTH_MD5_COMPAT_SIZE RIP_RTE_SIZE
105 /* Default version of rip instance. */
106 int version_send
; /* version 1 or 2 (but not both) */
107 int version_recv
; /* version 1 or 2 or both */
109 /* Output buffer of RIP. */
112 /* RIP routing information base. */
113 struct route_table
*table
;
115 /* RIP only static routing information. */
116 struct route_table
*route
;
119 struct route_table
*neighbor
;
122 struct thread
*t_read
;
124 /* Update and garbage timer. */
125 struct thread
*t_update
;
127 /* Triggered update hack. */
129 struct thread
*t_triggered_update
;
130 struct thread
*t_triggered_interval
;
132 /* RIP timer values. */
133 unsigned long update_time
;
134 unsigned long timeout_time
;
135 unsigned long garbage_time
;
137 /* RIP default metric. */
140 /* RIP default-information originate. */
141 u_char default_information
;
142 char *default_information_route_map
;
144 /* RIP default distance. */
146 struct route_table
*distance_table
;
151 /* For redistribute route map. */
155 struct route_map
*map
;
158 } route_map
[ZEBRA_ROUTE_MAX
];
161 /* RIP routing table entry which belong to rip_packet. */
164 u_int16_t family
; /* Address family of this route. */
165 u_int16_t tag
; /* Route Tag which included in RIP2 packet. */
166 struct in_addr prefix
; /* Prefix of rip route. */
167 struct in_addr mask
; /* Netmask of rip route. */
168 struct in_addr nexthop
; /* Next hop of rip route. */
169 u_int32_t metric
; /* Metric value of rip route. */
172 /* RIP packet structure. */
175 unsigned char command
; /* Command type of RIP packet. */
176 unsigned char version
; /* RIP version which coming from peer. */
177 unsigned char pad1
; /* Padding of RIP packet header. */
178 unsigned char pad2
; /* Same as above. */
179 struct rte rte
[1]; /* Address structure. */
182 /* Buffer to read RIP packet. */
185 struct rip_packet rip_packet
;
186 char buf
[RIP_PACKET_MAXSIZ
];
189 /* RIP route information. */
192 /* This route's type. */
199 struct in_addr nexthop
;
202 /* Which interface does this route come from. */
205 /* Metric of this route. */
208 /* External metric of this route.
209 if learnt from an externalm proto */
210 u_int32_t external_metric
;
212 /* Tag information of this route. */
215 /* Flags of RIP route. */
216 #define RIP_RTF_FIB 1
217 #define RIP_RTF_CHANGED 2
220 /* Garbage collect timer. */
221 struct thread
*t_timeout
;
222 struct thread
*t_garbage_collect
;
224 /* Route-map futures - this variables can be changed. */
225 struct in_addr nexthop_out
;
227 u_int32_t metric_out
;
229 ifindex_t ifindex_out
;
231 struct route_node
*rp
;
236 struct rip_info
*next
;
237 struct rip_info
*prev
;
238 #endif /* NEW_RIP_TABLE */
242 RIP_NO_SPLIT_HORIZON
= 0,
244 RIP_SPLIT_HORIZON_POISONED_REVERSE
245 } split_horizon_policy_t
;
247 /* RIP specific interface configuration. */
250 /* RIP is enabled on this interface. */
252 int enable_interface
;
254 /* RIP is running on this interface. */
257 /* RIP version control. */
261 /* RIPv2 broadcast mode */
264 /* RIPv2 authentication type. */
267 /* RIPv2 authentication string. */
270 /* RIPv2 authentication key chain. */
273 /* value to use for md5->auth_len */
274 u_int8_t md5_auth_len
;
276 /* Split horizon flag. */
277 split_horizon_policy_t split_horizon
;
278 split_horizon_policy_t split_horizon_default
;
280 /* For filter type slot. */
281 #define RIP_FILTER_IN 0
282 #define RIP_FILTER_OUT 1
283 #define RIP_FILTER_MAX 2
286 struct access_list
*list
[RIP_FILTER_MAX
];
289 struct prefix_list
*prefix
[RIP_FILTER_MAX
];
292 struct route_map
*routemap
[RIP_FILTER_MAX
];
294 /* Wake up thread. */
295 struct thread
*t_wakeup
;
297 /* Interface statistics. */
302 /* Passive interface. */
306 /* RIP peer information. */
312 /* Peer RIP tag value. */
315 /* Last update time. */
318 /* Peer RIP version. */
325 /* Timeout thread. */
326 struct thread
*t_timeout
;
333 u_int16_t packet_len
;
348 /* RIP accepet/announce methods. */
349 #define RI_RIP_UNSPEC 0
350 #define RI_RIP_VERSION_1 1
351 #define RI_RIP_VERSION_2 2
352 #define RI_RIP_VERSION_1_AND_2 3
353 #define RI_RIP_VERSION_NONE 4
354 /* N.B. stuff will break if
355 (RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */
357 /* Default value for "default-metric" command. */
358 #define RIP_DEFAULT_METRIC_DEFAULT 1
365 RIP_TRIGGERED_UPDATE
,
368 /* Macro for timer turn on. */
369 #define RIP_TIMER_ON(T,F,V) \
372 (T) = thread_add_timer (master, (F), rinfo, (V)); \
375 /* Macro for timer turn off. */
376 #define RIP_TIMER_OFF(X) THREAD_TIMER_OFF(X)
379 extern void rip_init (void);
380 extern void rip_reset (void);
381 extern void rip_clean (void);
382 extern void rip_clean_network (void);
383 extern void rip_interfaces_clean (void);
384 extern void rip_interfaces_reset (void);
385 extern void rip_passive_nondefault_clean (void);
386 extern void rip_if_init (void);
387 extern void rip_if_down_all (void);
388 extern void rip_route_map_init (void);
389 extern void rip_route_map_reset (void);
390 extern void rip_snmp_init (void);
391 extern void rip_zclient_init(struct thread_master
*);
392 extern void rip_zclient_start (void);
393 extern void rip_zclient_reset (void);
394 extern void rip_offset_init (void);
395 extern int if_check_address (struct in_addr addr
);
397 extern int rip_request_send (struct sockaddr_in
*, struct interface
*, u_char
,
399 extern int rip_neighbor_lookup (struct sockaddr_in
*);
401 extern int rip_redistribute_check (int);
402 extern void rip_redistribute_add (int, int, struct prefix_ipv4
*, ifindex_t
,
403 struct in_addr
*, unsigned int, unsigned char,
405 extern void rip_redistribute_delete (int, int, struct prefix_ipv4
*, ifindex_t
);
406 extern void rip_redistribute_withdraw (int);
407 extern void rip_zebra_ipv4_add (struct route_node
*);
408 extern void rip_zebra_ipv4_delete (struct route_node
*);
409 extern void rip_interface_multicast_set (int, struct connected
*);
410 extern void rip_distribute_update_interface (struct interface
*);
411 extern void rip_if_rmap_update_interface (struct interface
*);
413 extern int config_write_rip_network (struct vty
*, int);
414 extern int config_write_rip_offset_list (struct vty
*);
415 extern int config_write_rip_redistribute (struct vty
*, int);
417 extern void rip_peer_init (void);
418 extern void rip_peer_update (struct sockaddr_in
*, u_char
);
419 extern void rip_peer_bad_route (struct sockaddr_in
*);
420 extern void rip_peer_bad_packet (struct sockaddr_in
*);
421 extern void rip_peer_display (struct vty
*);
422 extern struct rip_peer
*rip_peer_lookup (struct in_addr
*);
423 extern struct rip_peer
*rip_peer_lookup_next (struct in_addr
*);
425 extern int rip_offset_list_apply_in (struct prefix_ipv4
*, struct interface
*, u_int32_t
*);
426 extern int rip_offset_list_apply_out (struct prefix_ipv4
*, struct interface
*, u_int32_t
*);
427 extern void rip_offset_clean (void);
429 extern void rip_info_free (struct rip_info
*);
430 extern u_char
rip_distance_apply (struct rip_info
*);
431 extern void rip_redistribute_clean (void);
432 extern void rip_ifaddr_add (struct interface
*, struct connected
*);
433 extern void rip_ifaddr_delete (struct interface
*, struct connected
*);
435 extern struct rip_info
*rip_ecmp_add (struct rip_info
*);
436 extern struct rip_info
*rip_ecmp_replace (struct rip_info
*);
437 extern struct rip_info
*rip_ecmp_delete (struct rip_info
*);
439 /* There is only one rip strucutre. */
440 extern struct rip
*rip
;
442 /* Master thread strucutre. */
443 extern struct thread_master
*master
;
445 /* RIP statistics for SNMP. */
446 extern long rip_global_route_changes
;
447 extern long rip_global_queries
;
448 #endif /* _ZEBRA_RIP_H */