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
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. */
154 struct route_map
*map
;
157 } route_map
[ZEBRA_ROUTE_MAX
];
161 DECLARE_QOBJ_TYPE(rip
)
163 /* RIP routing table entry which belong to rip_packet. */
165 u_int16_t family
; /* Address family of this route. */
166 u_int16_t tag
; /* Route Tag which included in RIP2 packet. */
167 struct in_addr prefix
; /* Prefix of rip route. */
168 struct in_addr mask
; /* Netmask of rip route. */
169 struct in_addr nexthop
; /* Next hop of rip route. */
170 u_int32_t metric
; /* Metric value of rip route. */
173 /* 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. */
184 struct rip_packet rip_packet
;
185 char buf
[RIP_PACKET_MAXSIZ
];
188 /* 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. */
246 struct rip_interface
{
247 /* RIP is enabled on this interface. */
249 int enable_interface
;
251 /* RIP is running on this interface. */
254 /* RIP version control. */
258 /* RIPv2 broadcast mode */
261 /* RIPv2 authentication type. */
264 /* RIPv2 authentication string. */
267 /* RIPv2 authentication key chain. */
270 /* value to use for md5->auth_len */
271 u_int8_t md5_auth_len
;
273 /* Split horizon flag. */
274 split_horizon_policy_t split_horizon
;
275 split_horizon_policy_t split_horizon_default
;
277 /* For filter type slot. */
278 #define RIP_FILTER_IN 0
279 #define RIP_FILTER_OUT 1
280 #define RIP_FILTER_MAX 2
283 struct access_list
*list
[RIP_FILTER_MAX
];
286 struct prefix_list
*prefix
[RIP_FILTER_MAX
];
289 struct route_map
*routemap
[RIP_FILTER_MAX
];
291 /* Wake up thread. */
292 struct thread
*t_wakeup
;
294 /* Interface statistics. */
299 /* Passive interface. */
303 /* RIP peer information. */
308 /* Peer RIP tag value. */
311 /* Last update time. */
314 /* Peer RIP version. */
321 /* Timeout thread. */
322 struct thread
*t_timeout
;
325 struct rip_md5_info
{
328 u_int16_t packet_len
;
336 struct rip_md5_data
{
342 /* RIP accepet/announce methods. */
343 #define RI_RIP_UNSPEC 0
344 #define RI_RIP_VERSION_1 1
345 #define RI_RIP_VERSION_2 2
346 #define RI_RIP_VERSION_1_AND_2 3
347 #define RI_RIP_VERSION_NONE 4
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
358 RIP_TRIGGERED_UPDATE
,
361 /* Macro for timer turn on. */
362 #define RIP_TIMER_ON(T,F,V) thread_add_timer (master, (F), rinfo, (V), &(T))
364 /* Macro for timer turn off. */
365 #define RIP_TIMER_OFF(X) THREAD_TIMER_OFF(X)
368 extern void rip_init(void);
369 extern void rip_reset(void);
370 extern void rip_clean(void);
371 extern void rip_clean_network(void);
372 extern void rip_interfaces_clean(void);
373 extern void rip_interfaces_reset(void);
374 extern void rip_passive_nondefault_clean(void);
375 extern void rip_if_init(void);
376 extern void rip_if_down_all(void);
377 extern void rip_route_map_init(void);
378 extern void rip_route_map_reset(void);
379 extern void rip_zclient_init(struct thread_master
*);
380 extern void rip_zclient_stop(void);
381 extern void rip_zclient_reset(void);
382 extern void rip_offset_init(void);
383 extern int if_check_address(struct in_addr addr
);
385 extern int rip_request_send(struct sockaddr_in
*, struct interface
*, u_char
,
387 extern int rip_neighbor_lookup(struct sockaddr_in
*);
389 extern int rip_redistribute_check(int);
390 extern void rip_redistribute_add(int, int, struct prefix_ipv4
*, ifindex_t
,
391 struct in_addr
*, unsigned int, unsigned char,
393 extern void rip_redistribute_delete(int, int, struct prefix_ipv4
*, ifindex_t
);
394 extern void rip_redistribute_withdraw(int);
395 extern void rip_zebra_ipv4_add(struct route_node
*);
396 extern void rip_zebra_ipv4_delete(struct route_node
*);
397 extern void rip_interface_multicast_set(int, struct connected
*);
398 extern void rip_distribute_update_interface(struct interface
*);
399 extern void rip_if_rmap_update_interface(struct interface
*);
401 extern int config_write_rip_network(struct vty
*, int);
402 extern int config_write_rip_offset_list(struct vty
*);
403 extern int config_write_rip_redistribute(struct vty
*, int);
405 extern void rip_peer_init(void);
406 extern void rip_peer_update(struct sockaddr_in
*, u_char
);
407 extern void rip_peer_bad_route(struct sockaddr_in
*);
408 extern void rip_peer_bad_packet(struct sockaddr_in
*);
409 extern void rip_peer_display(struct vty
*);
410 extern struct rip_peer
*rip_peer_lookup(struct in_addr
*);
411 extern struct rip_peer
*rip_peer_lookup_next(struct in_addr
*);
413 extern int rip_offset_list_apply_in(struct prefix_ipv4
*, struct interface
*,
415 extern int rip_offset_list_apply_out(struct prefix_ipv4
*, struct interface
*,
417 extern void rip_offset_clean(void);
419 extern void rip_info_free(struct rip_info
*);
420 extern u_char
rip_distance_apply(struct rip_info
*);
421 extern void rip_redistribute_clean(void);
423 extern struct rip_info
*rip_ecmp_add(struct rip_info
*);
424 extern struct rip_info
*rip_ecmp_replace(struct rip_info
*);
425 extern struct rip_info
*rip_ecmp_delete(struct rip_info
*);
427 /* There is only one rip strucutre. */
428 extern struct rip
*rip
;
430 /* Master thread strucutre. */
431 extern struct thread_master
*master
;
433 /* RIP statistics for SNMP. */
434 extern long rip_global_route_changes
;
435 extern long rip_global_queries
;
437 DECLARE_HOOK(rip_ifaddr_add
, (struct connected
* ifc
), (ifc
))
438 DECLARE_HOOK(rip_ifaddr_del
, (struct connected
* ifc
), (ifc
))
440 #endif /* _ZEBRA_RIP_H */