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718e3744 | 1 | /* RIP related values and structures. |
2 | * Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro <kunihiro@zebra.org> | |
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 | * | |
896014f4 DL |
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 | |
718e3744 | 19 | */ |
20 | ||
21 | #ifndef _ZEBRA_RIP_H | |
22 | #define _ZEBRA_RIP_H | |
23 | ||
f6eacff4 | 24 | #include "qobj.h" |
3012671f | 25 | #include "hook.h" |
dd127197 | 26 | #include "nexthop.h" |
4a1ab8e4 DL |
27 | #include "rip_memory.h" |
28 | ||
718e3744 | 29 | /* RIP version number. */ |
30 | #define RIPv1 1 | |
31 | #define RIPv2 2 | |
f38a471c | 32 | /* N.B. stuff will break if |
33 | (RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */ | |
34 | ||
718e3744 | 35 | |
36 | /* RIP command list. */ | |
37 | #define RIP_REQUEST 1 | |
38 | #define RIP_RESPONSE 2 | |
39 | #define RIP_TRACEON 3 /* Obsolete */ | |
40 | #define RIP_TRACEOFF 4 /* Obsolete */ | |
41 | #define RIP_POLL 5 | |
42 | #define RIP_POLL_ENTRY 6 | |
43 | #define RIP_COMMAND_MAX 7 | |
44 | ||
45 | /* RIP metric infinity value.*/ | |
46 | #define RIP_METRIC_INFINITY 16 | |
47 | ||
48 | /* Normal RIP packet min and max size. */ | |
49 | #define RIP_PACKET_MINSIZ 4 | |
50 | #define RIP_PACKET_MAXSIZ 512 | |
51 | ||
52 | #define RIP_HEADER_SIZE 4 | |
53 | #define RIP_RTE_SIZE 20 | |
54 | ||
55 | /* Max count of routing table entry in one rip packet. */ | |
6a7cff75 | 56 | #define RIP_MAX_RTE ((RIP_PACKET_MAXSIZ - RIP_HEADER_SIZE) / RIP_RTE_SIZE) |
718e3744 | 57 | |
58 | /* RIP version 2 multicast address. */ | |
59 | #ifndef INADDR_RIP_GROUP | |
60 | #define INADDR_RIP_GROUP 0xe0000009 /* 224.0.0.9 */ | |
61 | #endif | |
62 | ||
63 | /* RIP timers */ | |
64 | #define RIP_UPDATE_TIMER_DEFAULT 30 | |
65 | #define RIP_TIMEOUT_TIMER_DEFAULT 180 | |
66 | #define RIP_GARBAGE_TIMER_DEFAULT 120 | |
67 | ||
68 | /* RIP peer timeout value. */ | |
69 | #define RIP_PEER_TIMER_DEFAULT 180 | |
70 | ||
71 | /* RIP port number. */ | |
72 | #define RIP_PORT_DEFAULT 520 | |
73 | #define RIP_VTY_PORT 2602 | |
718e3744 | 74 | |
75 | /* Default configuration file name. */ | |
76 | #define RIPD_DEFAULT_CONFIG "ripd.conf" | |
77 | ||
78 | /* RIP route types. */ | |
79 | #define RIP_ROUTE_RTE 0 | |
80 | #define RIP_ROUTE_STATIC 1 | |
81 | #define RIP_ROUTE_DEFAULT 2 | |
82 | #define RIP_ROUTE_REDISTRIBUTE 3 | |
83 | #define RIP_ROUTE_INTERFACE 4 | |
84 | ||
ca5e516c | 85 | /* RIPv2 special RTE family types */ |
86 | #define RIP_FAMILY_AUTH 0xffff | |
87 | ||
88 | /* RIPv2 authentication types, for RIP_FAMILY_AUTH RTE's */ | |
89 | #define RIP_NO_AUTH 0 | |
90 | #define RIP_AUTH_DATA 1 | |
91 | #define RIP_AUTH_SIMPLE_PASSWORD 2 | |
92 | #define RIP_AUTH_MD5 3 | |
93 | ||
b14ee00b | 94 | /* RIPv2 Simple authentication */ |
95 | #define RIP_AUTH_SIMPLE_SIZE 16 | |
96 | ||
ca5e516c | 97 | /* RIPv2 MD5 authentication. */ |
718e3744 | 98 | #define RIP_AUTH_MD5_SIZE 16 |
ca5e516c | 99 | #define RIP_AUTH_MD5_COMPAT_SIZE RIP_RTE_SIZE |
718e3744 | 100 | |
101 | /* RIP structure. */ | |
d62a17ae | 102 | struct rip { |
103 | /* RIP socket. */ | |
104 | int sock; | |
105 | ||
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 */ | |
109 | ||
110 | /* Output buffer of RIP. */ | |
111 | struct stream *obuf; | |
112 | ||
113 | /* RIP routing information base. */ | |
114 | struct route_table *table; | |
115 | ||
116 | /* RIP only static routing information. */ | |
117 | struct route_table *route; | |
118 | ||
119 | /* RIP neighbor. */ | |
120 | struct route_table *neighbor; | |
121 | ||
122 | /* RIP threads. */ | |
123 | struct thread *t_read; | |
124 | ||
125 | /* Update and garbage timer. */ | |
126 | struct thread *t_update; | |
127 | ||
128 | /* Triggered update hack. */ | |
129 | int trigger; | |
130 | struct thread *t_triggered_update; | |
131 | struct thread *t_triggered_interval; | |
132 | ||
133 | /* RIP timer values. */ | |
134 | unsigned long update_time; | |
135 | unsigned long timeout_time; | |
136 | unsigned long garbage_time; | |
137 | ||
138 | /* RIP default metric. */ | |
139 | int default_metric; | |
140 | ||
141 | /* RIP default-information originate. */ | |
d7c0a89a | 142 | uint8_t default_information; |
d62a17ae | 143 | char *default_information_route_map; |
144 | ||
145 | /* RIP default distance. */ | |
d7c0a89a | 146 | uint8_t distance; |
d62a17ae | 147 | struct route_table *distance_table; |
148 | ||
149 | /* RIP ECMP flag */ | |
150 | unsigned int ecmp; | |
151 | ||
152 | /* For redistribute route map. */ | |
153 | struct { | |
154 | char *name; | |
155 | struct route_map *map; | |
156 | int metric_config; | |
d7c0a89a | 157 | uint32_t metric; |
d62a17ae | 158 | } route_map[ZEBRA_ROUTE_MAX]; |
159 | ||
160 | QOBJ_FIELDS | |
718e3744 | 161 | }; |
f6eacff4 | 162 | DECLARE_QOBJ_TYPE(rip) |
718e3744 | 163 | |
164 | /* RIP routing table entry which belong to rip_packet. */ | |
d62a17ae | 165 | struct rte { |
d7c0a89a QY |
166 | uint16_t family; /* Address family of this route. */ |
167 | uint16_t tag; /* Route Tag which included in RIP2 packet. */ | |
d62a17ae | 168 | struct in_addr prefix; /* Prefix of rip route. */ |
169 | struct in_addr mask; /* Netmask of rip route. */ | |
170 | struct in_addr nexthop; /* Next hop of rip route. */ | |
d7c0a89a | 171 | uint32_t metric; /* Metric value of rip route. */ |
718e3744 | 172 | }; |
173 | ||
174 | /* RIP packet structure. */ | |
d62a17ae | 175 | struct rip_packet { |
176 | unsigned char command; /* Command type of RIP packet. */ | |
177 | unsigned char version; /* RIP version which coming from peer. */ | |
178 | unsigned char pad1; /* Padding of RIP packet header. */ | |
179 | unsigned char pad2; /* Same as above. */ | |
180 | struct rte rte[1]; /* Address structure. */ | |
718e3744 | 181 | }; |
182 | ||
183 | /* Buffer to read RIP packet. */ | |
d62a17ae | 184 | union rip_buf { |
185 | struct rip_packet rip_packet; | |
186 | char buf[RIP_PACKET_MAXSIZ]; | |
718e3744 | 187 | }; |
188 | ||
189 | /* RIP route information. */ | |
d62a17ae | 190 | struct rip_info { |
191 | /* This route's type. */ | |
192 | int type; | |
718e3744 | 193 | |
d62a17ae | 194 | /* Sub type. */ |
195 | int sub_type; | |
718e3744 | 196 | |
d62a17ae | 197 | /* RIP nexthop. */ |
dd127197 | 198 | struct nexthop nh; |
d62a17ae | 199 | struct in_addr from; |
718e3744 | 200 | |
d62a17ae | 201 | /* Metric of this route. */ |
d7c0a89a | 202 | uint32_t metric; |
718e3744 | 203 | |
d62a17ae | 204 | /* External metric of this route. |
205 | if learnt from an externalm proto */ | |
d7c0a89a | 206 | uint32_t external_metric; |
fbf5d033 | 207 | |
d62a17ae | 208 | /* Tag information of this route. */ |
d7c0a89a | 209 | uint16_t tag; |
718e3744 | 210 | |
d62a17ae | 211 | /* Flags of RIP route. */ |
718e3744 | 212 | #define RIP_RTF_FIB 1 |
213 | #define RIP_RTF_CHANGED 2 | |
d7c0a89a | 214 | uint8_t flags; |
718e3744 | 215 | |
d62a17ae | 216 | /* Garbage collect timer. */ |
217 | struct thread *t_timeout; | |
218 | struct thread *t_garbage_collect; | |
718e3744 | 219 | |
d62a17ae | 220 | /* Route-map futures - this variables can be changed. */ |
221 | struct in_addr nexthop_out; | |
d7c0a89a QY |
222 | uint8_t metric_set; |
223 | uint32_t metric_out; | |
224 | uint16_t tag_out; | |
d62a17ae | 225 | ifindex_t ifindex_out; |
718e3744 | 226 | |
d62a17ae | 227 | struct route_node *rp; |
718e3744 | 228 | |
d7c0a89a | 229 | uint8_t distance; |
718e3744 | 230 | |
231 | #ifdef NEW_RIP_TABLE | |
d62a17ae | 232 | struct rip_info *next; |
233 | struct rip_info *prev; | |
718e3744 | 234 | #endif /* NEW_RIP_TABLE */ |
235 | }; | |
236 | ||
16705130 | 237 | typedef enum { |
d62a17ae | 238 | RIP_NO_SPLIT_HORIZON = 0, |
239 | RIP_SPLIT_HORIZON, | |
240 | RIP_SPLIT_HORIZON_POISONED_REVERSE | |
16705130 | 241 | } split_horizon_policy_t; |
242 | ||
718e3744 | 243 | /* RIP specific interface configuration. */ |
d62a17ae | 244 | struct rip_interface { |
245 | /* RIP is enabled on this interface. */ | |
246 | int enable_network; | |
247 | int enable_interface; | |
718e3744 | 248 | |
d62a17ae | 249 | /* RIP is running on this interface. */ |
250 | int running; | |
718e3744 | 251 | |
d62a17ae | 252 | /* RIP version control. */ |
253 | int ri_send; | |
254 | int ri_receive; | |
718e3744 | 255 | |
d62a17ae | 256 | /* RIPv2 broadcast mode */ |
257 | int v2_broadcast; | |
f90310cf | 258 | |
d62a17ae | 259 | /* RIPv2 authentication type. */ |
260 | int auth_type; | |
718e3744 | 261 | |
d62a17ae | 262 | /* RIPv2 authentication string. */ |
263 | char *auth_str; | |
718e3744 | 264 | |
d62a17ae | 265 | /* RIPv2 authentication key chain. */ |
266 | char *key_chain; | |
718e3744 | 267 | |
d62a17ae | 268 | /* value to use for md5->auth_len */ |
d7c0a89a | 269 | uint8_t md5_auth_len; |
ca5e516c | 270 | |
d62a17ae | 271 | /* Split horizon flag. */ |
272 | split_horizon_policy_t split_horizon; | |
273 | split_horizon_policy_t split_horizon_default; | |
718e3744 | 274 | |
d62a17ae | 275 | /* For filter type slot. */ |
718e3744 | 276 | #define RIP_FILTER_IN 0 |
277 | #define RIP_FILTER_OUT 1 | |
278 | #define RIP_FILTER_MAX 2 | |
279 | ||
d62a17ae | 280 | /* Access-list. */ |
281 | struct access_list *list[RIP_FILTER_MAX]; | |
718e3744 | 282 | |
d62a17ae | 283 | /* Prefix-list. */ |
284 | struct prefix_list *prefix[RIP_FILTER_MAX]; | |
718e3744 | 285 | |
d62a17ae | 286 | /* Route-map. */ |
287 | struct route_map *routemap[RIP_FILTER_MAX]; | |
16705130 | 288 | |
d62a17ae | 289 | /* Wake up thread. */ |
290 | struct thread *t_wakeup; | |
718e3744 | 291 | |
d62a17ae | 292 | /* Interface statistics. */ |
293 | int recv_badpackets; | |
294 | int recv_badroutes; | |
295 | int sent_updates; | |
718e3744 | 296 | |
d62a17ae | 297 | /* Passive interface. */ |
298 | int passive; | |
718e3744 | 299 | }; |
300 | ||
301 | /* RIP peer information. */ | |
d62a17ae | 302 | struct rip_peer { |
303 | /* Peer address. */ | |
304 | struct in_addr addr; | |
718e3744 | 305 | |
d62a17ae | 306 | /* Peer RIP tag value. */ |
307 | int domain; | |
718e3744 | 308 | |
d62a17ae | 309 | /* Last update time. */ |
310 | time_t uptime; | |
718e3744 | 311 | |
d62a17ae | 312 | /* Peer RIP version. */ |
d7c0a89a | 313 | uint8_t version; |
718e3744 | 314 | |
d62a17ae | 315 | /* Statistics. */ |
316 | int recv_badpackets; | |
317 | int recv_badroutes; | |
718e3744 | 318 | |
d62a17ae | 319 | /* Timeout thread. */ |
320 | struct thread *t_timeout; | |
718e3744 | 321 | }; |
322 | ||
d62a17ae | 323 | struct rip_md5_info { |
d7c0a89a QY |
324 | uint16_t family; |
325 | uint16_t type; | |
326 | uint16_t packet_len; | |
327 | uint8_t keyid; | |
328 | uint8_t auth_len; | |
329 | uint32_t sequence; | |
330 | uint32_t reserv1; | |
331 | uint32_t reserv2; | |
718e3744 | 332 | }; |
333 | ||
d62a17ae | 334 | struct rip_md5_data { |
d7c0a89a QY |
335 | uint16_t family; |
336 | uint16_t type; | |
337 | uint8_t digest[16]; | |
718e3744 | 338 | }; |
339 | ||
340 | /* RIP accepet/announce methods. */ | |
341 | #define RI_RIP_UNSPEC 0 | |
342 | #define RI_RIP_VERSION_1 1 | |
343 | #define RI_RIP_VERSION_2 2 | |
344 | #define RI_RIP_VERSION_1_AND_2 3 | |
6aec4b41 | 345 | #define RI_RIP_VERSION_NONE 4 |
f38a471c | 346 | /* N.B. stuff will break if |
347 | (RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */ | |
718e3744 | 348 | |
349 | /* Default value for "default-metric" command. */ | |
350 | #define RIP_DEFAULT_METRIC_DEFAULT 1 | |
351 | ||
352 | /* RIP event. */ | |
d62a17ae | 353 | enum rip_event { |
354 | RIP_READ, | |
355 | RIP_UPDATE_EVENT, | |
356 | RIP_TRIGGERED_UPDATE, | |
718e3744 | 357 | }; |
358 | ||
359 | /* Macro for timer turn on. */ | |
ffa2c898 | 360 | #define RIP_TIMER_ON(T,F,V) thread_add_timer (master, (F), rinfo, (V), &(T)) |
718e3744 | 361 | |
362 | /* Macro for timer turn off. */ | |
8578874d | 363 | #define RIP_TIMER_OFF(X) THREAD_TIMER_OFF(X) |
718e3744 | 364 | |
365 | /* Prototypes. */ | |
d62a17ae | 366 | extern void rip_init(void); |
367 | extern void rip_reset(void); | |
368 | extern void rip_clean(void); | |
369 | extern void rip_clean_network(void); | |
370 | extern void rip_interfaces_clean(void); | |
371 | extern void rip_interfaces_reset(void); | |
372 | extern void rip_passive_nondefault_clean(void); | |
373 | extern void rip_if_init(void); | |
374 | extern void rip_if_down_all(void); | |
375 | extern void rip_route_map_init(void); | |
376 | extern void rip_route_map_reset(void); | |
4140ca4d | 377 | extern void rip_zclient_init(struct thread_master *); |
a2f9eb82 | 378 | extern void rip_zclient_stop(void); |
d62a17ae | 379 | extern void rip_zclient_reset(void); |
380 | extern void rip_offset_init(void); | |
381 | extern int if_check_address(struct in_addr addr); | |
382 | ||
d7c0a89a | 383 | extern int rip_request_send(struct sockaddr_in *, struct interface *, uint8_t, |
d62a17ae | 384 | struct connected *); |
385 | extern int rip_neighbor_lookup(struct sockaddr_in *); | |
386 | ||
387 | extern int rip_redistribute_check(int); | |
996c9314 LB |
388 | extern void rip_redistribute_add(int type, int sub_type, struct prefix_ipv4 *p, |
389 | struct nexthop *nh, unsigned int metric, | |
390 | unsigned char distance, route_tag_t tag); | |
d62a17ae | 391 | extern void rip_redistribute_delete(int, int, struct prefix_ipv4 *, ifindex_t); |
392 | extern void rip_redistribute_withdraw(int); | |
393 | extern void rip_zebra_ipv4_add(struct route_node *); | |
394 | extern void rip_zebra_ipv4_delete(struct route_node *); | |
395 | extern void rip_interface_multicast_set(int, struct connected *); | |
396 | extern void rip_distribute_update_interface(struct interface *); | |
397 | extern void rip_if_rmap_update_interface(struct interface *); | |
398 | ||
399 | extern int config_write_rip_network(struct vty *, int); | |
400 | extern int config_write_rip_offset_list(struct vty *); | |
401 | extern int config_write_rip_redistribute(struct vty *, int); | |
402 | ||
403 | extern void rip_peer_init(void); | |
d7c0a89a | 404 | extern void rip_peer_update(struct sockaddr_in *, uint8_t); |
d62a17ae | 405 | extern void rip_peer_bad_route(struct sockaddr_in *); |
406 | extern void rip_peer_bad_packet(struct sockaddr_in *); | |
407 | extern void rip_peer_display(struct vty *); | |
408 | extern struct rip_peer *rip_peer_lookup(struct in_addr *); | |
409 | extern struct rip_peer *rip_peer_lookup_next(struct in_addr *); | |
410 | ||
411 | extern int rip_offset_list_apply_in(struct prefix_ipv4 *, struct interface *, | |
d7c0a89a | 412 | uint32_t *); |
d62a17ae | 413 | extern int rip_offset_list_apply_out(struct prefix_ipv4 *, struct interface *, |
d7c0a89a | 414 | uint32_t *); |
d62a17ae | 415 | extern void rip_offset_clean(void); |
416 | ||
417 | extern void rip_info_free(struct rip_info *); | |
d7c0a89a | 418 | extern uint8_t rip_distance_apply(struct rip_info *); |
d62a17ae | 419 | extern void rip_redistribute_clean(void); |
420 | ||
421 | extern struct rip_info *rip_ecmp_add(struct rip_info *); | |
422 | extern struct rip_info *rip_ecmp_replace(struct rip_info *); | |
423 | extern struct rip_info *rip_ecmp_delete(struct rip_info *); | |
bce8e868 | 424 | |
718e3744 | 425 | /* There is only one rip strucutre. */ |
426 | extern struct rip *rip; | |
427 | ||
32b5a493 DS |
428 | extern struct zebra_privs_t ripd_privs; |
429 | ||
718e3744 | 430 | /* Master thread strucutre. */ |
431 | extern struct thread_master *master; | |
432 | ||
433 | /* RIP statistics for SNMP. */ | |
434 | extern long rip_global_route_changes; | |
435 | extern long rip_global_queries; | |
3012671f | 436 | |
d62a17ae | 437 | DECLARE_HOOK(rip_ifaddr_add, (struct connected * ifc), (ifc)) |
438 | DECLARE_HOOK(rip_ifaddr_del, (struct connected * ifc), (ifc)) | |
3012671f | 439 | |
718e3744 | 440 | #endif /* _ZEBRA_RIP_H */ |