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 along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "rip_memory.h"
28 /* RIP version number. */
31 /* N.B. stuff will break if
32 (RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */
35 /* RIP command list. */
37 #define RIP_RESPONSE 2
38 #define RIP_TRACEON 3 /* Obsolete */
39 #define RIP_TRACEOFF 4 /* Obsolete */
41 #define RIP_POLL_ENTRY 6
42 #define RIP_COMMAND_MAX 7
44 /* RIP metric infinity value.*/
45 #define RIP_METRIC_INFINITY 16
47 /* Normal RIP packet min and max size. */
48 #define RIP_PACKET_MINSIZ 4
49 #define RIP_PACKET_MAXSIZ 512
51 #define RIP_HEADER_SIZE 4
52 #define RIP_RTE_SIZE 20
54 /* Max count of routing table entry in one rip packet. */
55 #define RIP_MAX_RTE ((RIP_PACKET_MAXSIZ - RIP_HEADER_SIZE) / RIP_RTE_SIZE)
57 /* RIP version 2 multicast address. */
58 #ifndef INADDR_RIP_GROUP
59 #define INADDR_RIP_GROUP 0xe0000009 /* 224.0.0.9 */
63 #define RIP_UPDATE_TIMER_DEFAULT 30
64 #define RIP_TIMEOUT_TIMER_DEFAULT 180
65 #define RIP_GARBAGE_TIMER_DEFAULT 120
67 /* RIP peer timeout value. */
68 #define RIP_PEER_TIMER_DEFAULT 180
70 /* RIP port number. */
71 #define RIP_PORT_DEFAULT 520
72 #define RIP_VTY_PORT 2602
74 /* Default configuration file name. */
75 #define RIPD_DEFAULT_CONFIG "ripd.conf"
77 /* RIP route types. */
78 #define RIP_ROUTE_RTE 0
79 #define RIP_ROUTE_STATIC 1
80 #define RIP_ROUTE_DEFAULT 2
81 #define RIP_ROUTE_REDISTRIBUTE 3
82 #define RIP_ROUTE_INTERFACE 4
84 /* RIPv2 special RTE family types */
85 #define RIP_FAMILY_AUTH 0xffff
87 /* RIPv2 authentication types, for RIP_FAMILY_AUTH RTE's */
89 #define RIP_AUTH_DATA 1
90 #define RIP_AUTH_SIMPLE_PASSWORD 2
91 #define RIP_AUTH_MD5 3
93 /* RIPv2 Simple authentication */
94 #define RIP_AUTH_SIMPLE_SIZE 16
96 /* RIPv2 MD5 authentication. */
97 #define RIP_AUTH_MD5_SIZE 16
98 #define RIP_AUTH_MD5_COMPAT_SIZE RIP_RTE_SIZE
106 /* Default version of rip instance. */
107 int version_send
; /* version 1 or 2 (but not both) */
108 int version_recv
; /* version 1 or 2 or both */
110 /* Output buffer of RIP. */
113 /* RIP routing information base. */
114 struct route_table
*table
;
116 /* RIP only static routing information. */
117 struct route_table
*route
;
120 struct route_table
*neighbor
;
123 struct thread
*t_read
;
125 /* Update and garbage timer. */
126 struct thread
*t_update
;
128 /* Triggered update hack. */
130 struct thread
*t_triggered_update
;
131 struct thread
*t_triggered_interval
;
133 /* RIP timer values. */
134 unsigned long update_time
;
135 unsigned long timeout_time
;
136 unsigned long garbage_time
;
138 /* RIP default metric. */
141 /* RIP default-information originate. */
142 u_char default_information
;
143 char *default_information_route_map
;
145 /* RIP default distance. */
147 struct route_table
*distance_table
;
152 /* For redistribute route map. */
156 struct route_map
*map
;
159 } route_map
[ZEBRA_ROUTE_MAX
];
163 DECLARE_QOBJ_TYPE(rip
)
165 /* RIP routing table entry which belong to rip_packet. */
168 u_int16_t family
; /* Address family of this route. */
169 u_int16_t tag
; /* Route Tag which included in RIP2 packet. */
170 struct in_addr prefix
; /* Prefix of rip route. */
171 struct in_addr mask
; /* Netmask of rip route. */
172 struct in_addr nexthop
; /* Next hop of rip route. */
173 u_int32_t metric
; /* Metric value of rip route. */
176 /* RIP packet structure. */
179 unsigned char command
; /* Command type of RIP packet. */
180 unsigned char version
; /* RIP version which coming from peer. */
181 unsigned char pad1
; /* Padding of RIP packet header. */
182 unsigned char pad2
; /* Same as above. */
183 struct rte rte
[1]; /* Address structure. */
186 /* Buffer to read RIP packet. */
189 struct rip_packet rip_packet
;
190 char buf
[RIP_PACKET_MAXSIZ
];
193 /* RIP route information. */
196 /* This route's type. */
203 struct in_addr nexthop
;
206 /* Which interface does this route come from. */
209 /* Metric of this route. */
212 /* External metric of this route.
213 if learnt from an externalm proto */
214 u_int32_t external_metric
;
216 /* Tag information of this route. */
219 /* Flags of RIP route. */
220 #define RIP_RTF_FIB 1
221 #define RIP_RTF_CHANGED 2
224 /* Garbage collect timer. */
225 struct thread
*t_timeout
;
226 struct thread
*t_garbage_collect
;
228 /* Route-map futures - this variables can be changed. */
229 struct in_addr nexthop_out
;
231 u_int32_t metric_out
;
233 ifindex_t ifindex_out
;
235 struct route_node
*rp
;
240 struct rip_info
*next
;
241 struct rip_info
*prev
;
242 #endif /* NEW_RIP_TABLE */
246 RIP_NO_SPLIT_HORIZON
= 0,
248 RIP_SPLIT_HORIZON_POISONED_REVERSE
249 } split_horizon_policy_t
;
251 /* RIP specific interface configuration. */
254 /* RIP is enabled on this interface. */
256 int enable_interface
;
258 /* RIP is running on this interface. */
261 /* RIP version control. */
265 /* RIPv2 broadcast mode */
268 /* RIPv2 authentication type. */
271 /* RIPv2 authentication string. */
274 /* RIPv2 authentication key chain. */
277 /* value to use for md5->auth_len */
278 u_int8_t md5_auth_len
;
280 /* Split horizon flag. */
281 split_horizon_policy_t split_horizon
;
282 split_horizon_policy_t split_horizon_default
;
284 /* For filter type slot. */
285 #define RIP_FILTER_IN 0
286 #define RIP_FILTER_OUT 1
287 #define RIP_FILTER_MAX 2
290 struct access_list
*list
[RIP_FILTER_MAX
];
293 struct prefix_list
*prefix
[RIP_FILTER_MAX
];
296 struct route_map
*routemap
[RIP_FILTER_MAX
];
298 /* Wake up thread. */
299 struct thread
*t_wakeup
;
301 /* Interface statistics. */
306 /* Passive interface. */
310 /* RIP peer information. */
316 /* Peer RIP tag value. */
319 /* Last update time. */
322 /* Peer RIP version. */
329 /* Timeout thread. */
330 struct thread
*t_timeout
;
337 u_int16_t packet_len
;
352 /* RIP accepet/announce methods. */
353 #define RI_RIP_UNSPEC 0
354 #define RI_RIP_VERSION_1 1
355 #define RI_RIP_VERSION_2 2
356 #define RI_RIP_VERSION_1_AND_2 3
357 #define RI_RIP_VERSION_NONE 4
358 /* N.B. stuff will break if
359 (RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */
361 /* Default value for "default-metric" command. */
362 #define RIP_DEFAULT_METRIC_DEFAULT 1
369 RIP_TRIGGERED_UPDATE
,
372 /* Macro for timer turn on. */
373 #define RIP_TIMER_ON(T,F,V) thread_add_timer (master, (F), rinfo, (V), &(T))
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_zclient_init(struct thread_master
*);
391 extern void rip_zclient_reset (void);
392 extern void rip_offset_init (void);
393 extern int if_check_address (struct in_addr addr
);
395 extern int rip_request_send (struct sockaddr_in
*, struct interface
*, u_char
,
397 extern int rip_neighbor_lookup (struct sockaddr_in
*);
399 extern int rip_redistribute_check (int);
400 extern void rip_redistribute_add (int, int, struct prefix_ipv4
*, ifindex_t
,
401 struct in_addr
*, unsigned int, unsigned char,
403 extern void rip_redistribute_delete (int, int, struct prefix_ipv4
*, ifindex_t
);
404 extern void rip_redistribute_withdraw (int);
405 extern void rip_zebra_ipv4_add (struct route_node
*);
406 extern void rip_zebra_ipv4_delete (struct route_node
*);
407 extern void rip_interface_multicast_set (int, struct connected
*);
408 extern void rip_distribute_update_interface (struct interface
*);
409 extern void rip_if_rmap_update_interface (struct interface
*);
411 extern int config_write_rip_network (struct vty
*, int);
412 extern int config_write_rip_offset_list (struct vty
*);
413 extern int config_write_rip_redistribute (struct vty
*, int);
415 extern void rip_peer_init (void);
416 extern void rip_peer_update (struct sockaddr_in
*, u_char
);
417 extern void rip_peer_bad_route (struct sockaddr_in
*);
418 extern void rip_peer_bad_packet (struct sockaddr_in
*);
419 extern void rip_peer_display (struct vty
*);
420 extern struct rip_peer
*rip_peer_lookup (struct in_addr
*);
421 extern struct rip_peer
*rip_peer_lookup_next (struct in_addr
*);
423 extern int rip_offset_list_apply_in (struct prefix_ipv4
*, struct interface
*, u_int32_t
*);
424 extern int rip_offset_list_apply_out (struct prefix_ipv4
*, struct interface
*, u_int32_t
*);
425 extern void rip_offset_clean (void);
427 extern void rip_info_free (struct rip_info
*);
428 extern u_char
rip_distance_apply (struct rip_info
*);
429 extern void rip_redistribute_clean (void);
431 extern struct rip_info
*rip_ecmp_add (struct rip_info
*);
432 extern struct rip_info
*rip_ecmp_replace (struct rip_info
*);
433 extern struct rip_info
*rip_ecmp_delete (struct rip_info
*);
435 /* There is only one rip strucutre. */
436 extern struct rip
*rip
;
438 /* Master thread strucutre. */
439 extern struct thread_master
*master
;
441 /* RIP statistics for SNMP. */
442 extern long rip_global_route_changes
;
443 extern long rip_global_queries
;
445 DECLARE_HOOK(rip_ifaddr_add
, (struct connected
*ifc
), (ifc
))
446 DECLARE_HOOK(rip_ifaddr_del
, (struct connected
*ifc
), (ifc
))
448 #endif /* _ZEBRA_RIP_H */