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718e3744 | 1 | /* |
2 | * RIPng related value and structure. | |
3 | * Copyright (C) 1998 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | * 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #ifndef _ZEBRA_RIPNG_RIPNGD_H | |
24 | #define _ZEBRA_RIPNG_RIPNGD_H | |
25 | ||
26 | /* RIPng version and port number. */ | |
27 | #define RIPNG_V1 1 | |
28 | #define RIPNG_PORT_DEFAULT 521 | |
29 | #define RIPNG_VTY_PORT 2603 | |
718e3744 | 30 | #define RIPNG_MAX_PACKET_SIZE 1500 |
31 | #define RIPNG_PRIORITY_DEFAULT 0 | |
32 | ||
33 | /* RIPng commands. */ | |
34 | #define RIPNG_REQUEST 1 | |
35 | #define RIPNG_RESPONSE 2 | |
36 | ||
37 | /* RIPng metric and multicast group address. */ | |
38 | #define RIPNG_METRIC_INFINITY 16 | |
39 | #define RIPNG_METRIC_NEXTHOP 0xff | |
40 | #define RIPNG_GROUP "ff02::9" | |
41 | ||
42 | /* RIPng timers. */ | |
43 | #define RIPNG_UPDATE_TIMER_DEFAULT 30 | |
44 | #define RIPNG_TIMEOUT_TIMER_DEFAULT 180 | |
45 | #define RIPNG_GARBAGE_TIMER_DEFAULT 120 | |
46 | ||
a94434b6 | 47 | /* RIPng peer timeout value. */ |
48 | #define RIPNG_PEER_TIMER_DEFAULT 180 | |
49 | ||
718e3744 | 50 | /* Default config file name. */ |
51 | #define RIPNG_DEFAULT_CONFIG "ripngd.conf" | |
52 | ||
53 | /* RIPng route types. */ | |
54 | #define RIPNG_ROUTE_RTE 0 | |
55 | #define RIPNG_ROUTE_STATIC 1 | |
a94434b6 | 56 | #define RIPNG_ROUTE_DEFAULT 2 |
57 | #define RIPNG_ROUTE_REDISTRIBUTE 3 | |
58 | #define RIPNG_ROUTE_INTERFACE 4 | |
59 | #define RIPNG_ROUTE_AGGREGATE 5 | |
718e3744 | 60 | |
61 | /* Interface send/receive configuration. */ | |
62 | #define RIPNG_SEND_UNSPEC 0 | |
63 | #define RIPNG_SEND_OFF 1 | |
64 | #define RIPNG_RECEIVE_UNSPEC 0 | |
65 | #define RIPNG_RECEIVE_OFF 1 | |
66 | ||
718e3744 | 67 | /* RIP default route's accept/announce methods. */ |
68 | #define RIPNG_DEFAULT_ADVERTISE_UNSPEC 0 | |
69 | #define RIPNG_DEFAULT_ADVERTISE_NONE 1 | |
70 | #define RIPNG_DEFAULT_ADVERTISE 2 | |
71 | ||
72 | #define RIPNG_DEFAULT_ACCEPT_UNSPEC 0 | |
73 | #define RIPNG_DEFAULT_ACCEPT_NONE 1 | |
74 | #define RIPNG_DEFAULT_ACCEPT 2 | |
75 | ||
76 | /* Default value for "default-metric" command. */ | |
77 | #define RIPNG_DEFAULT_METRIC_DEFAULT 1 | |
78 | ||
79 | /* For max RTE calculation. */ | |
80 | #ifndef IPV6_HDRLEN | |
81 | #define IPV6_HDRLEN 40 | |
82 | #endif /* IPV6_HDRLEN */ | |
83 | ||
84 | #ifndef IFMINMTU | |
85 | #define IFMINMTU 576 | |
86 | #endif /* IFMINMTU */ | |
87 | ||
88 | /* RIPng structure. */ | |
89 | struct ripng | |
90 | { | |
91 | /* RIPng socket. */ | |
92 | int sock; | |
93 | ||
94 | /* RIPng Parameters.*/ | |
95 | u_char command; | |
96 | u_char version; | |
97 | unsigned long update_time; | |
98 | unsigned long timeout_time; | |
99 | unsigned long garbage_time; | |
100 | int max_mtu; | |
101 | int default_metric; | |
102 | int default_information; | |
103 | ||
104 | /* Input/output buffer of RIPng. */ | |
105 | struct stream *ibuf; | |
106 | struct stream *obuf; | |
107 | ||
108 | /* RIPng routing information base. */ | |
109 | struct route_table *table; | |
110 | ||
111 | /* RIPng only static route information. */ | |
112 | struct route_table *route; | |
113 | ||
114 | /* RIPng aggregate route information. */ | |
115 | struct route_table *aggregate; | |
116 | ||
117 | /* RIPng threads. */ | |
118 | struct thread *t_read; | |
119 | struct thread *t_write; | |
120 | struct thread *t_update; | |
121 | struct thread *t_garbage; | |
122 | struct thread *t_zebra; | |
123 | ||
124 | /* Triggered update hack. */ | |
125 | int trigger; | |
126 | struct thread *t_triggered_update; | |
127 | struct thread *t_triggered_interval; | |
128 | ||
129 | /* For redistribute route map. */ | |
130 | struct | |
131 | { | |
132 | char *name; | |
133 | struct route_map *map; | |
134 | int metric_config; | |
135 | u_int32_t metric; | |
136 | } route_map[ZEBRA_ROUTE_MAX]; | |
137 | }; | |
138 | ||
139 | /* Routing table entry. */ | |
140 | struct rte | |
141 | { | |
a94434b6 | 142 | struct in6_addr addr; /* RIPng destination prefix */ |
143 | u_short tag; /* RIPng tag */ | |
144 | u_char prefixlen; /* Length of the RIPng prefix */ | |
145 | u_char metric; /* Metric of the RIPng route */ | |
146 | /* The nexthop is stored by the structure | |
147 | * ripng_nexthop within ripngd.c */ | |
718e3744 | 148 | }; |
149 | ||
150 | /* RIPNG send packet. */ | |
151 | struct ripng_packet | |
152 | { | |
153 | u_char command; | |
154 | u_char version; | |
155 | u_int16_t zero; | |
156 | struct rte rte[1]; | |
157 | }; | |
158 | ||
159 | /* Each route's information. */ | |
160 | struct ripng_info | |
161 | { | |
162 | /* This route's type. Static, ripng or aggregate. */ | |
163 | u_char type; | |
164 | ||
165 | /* Sub type for static route. */ | |
166 | u_char sub_type; | |
167 | ||
168 | /* RIPng specific information */ | |
169 | struct in6_addr nexthop; | |
170 | struct in6_addr from; | |
171 | ||
172 | /* Which interface does this route come from. */ | |
173 | unsigned int ifindex; | |
174 | ||
175 | /* Metric of this route. */ | |
176 | u_char metric; | |
177 | ||
178 | /* Tag field of RIPng packet.*/ | |
179 | u_int16_t tag; | |
180 | ||
181 | /* For aggregation. */ | |
182 | unsigned int suppress; | |
183 | ||
184 | /* Flags of RIPng route. */ | |
185 | #define RIPNG_RTF_FIB 1 | |
186 | #define RIPNG_RTF_CHANGED 2 | |
187 | u_char flags; | |
188 | ||
189 | /* Garbage collect timer. */ | |
190 | struct thread *t_timeout; | |
191 | struct thread *t_garbage_collect; | |
192 | ||
193 | /* Route-map features - this variables can be changed. */ | |
a94434b6 | 194 | struct in6_addr nexthop_out; |
718e3744 | 195 | u_char metric_set; |
a94434b6 | 196 | u_char metric_out; |
197 | u_short tag_out; | |
718e3744 | 198 | |
199 | struct route_node *rp; | |
200 | }; | |
201 | ||
a94434b6 | 202 | #ifdef notyet |
203 | #if 0 | |
718e3744 | 204 | /* RIPng tag structure. */ |
205 | struct ripng_tag | |
206 | { | |
207 | /* Tag value. */ | |
208 | u_int16_t tag; | |
209 | ||
210 | /* Port. */ | |
211 | u_int16_t port; | |
212 | ||
213 | /* Multicast group. */ | |
214 | struct in6_addr maddr; | |
215 | ||
216 | /* Table number. */ | |
217 | int table; | |
218 | ||
219 | /* Distance. */ | |
220 | int distance; | |
221 | ||
222 | /* Split horizon. */ | |
223 | u_char split_horizon; | |
224 | ||
225 | /* Poison reverse. */ | |
226 | u_char poison_reverse; | |
227 | }; | |
a94434b6 | 228 | #endif /* 0 */ |
229 | #endif /* not yet */ | |
230 | ||
231 | typedef enum { | |
232 | RIPNG_NO_SPLIT_HORIZON = 0, | |
233 | RIPNG_SPLIT_HORIZON, | |
234 | RIPNG_SPLIT_HORIZON_POISONED_REVERSE | |
235 | } split_horizon_policy_t; | |
718e3744 | 236 | |
237 | /* RIPng specific interface configuration. */ | |
238 | struct ripng_interface | |
239 | { | |
240 | /* RIPng is enabled on this interface. */ | |
241 | int enable_network; | |
242 | int enable_interface; | |
243 | ||
244 | /* RIPng is running on this interface. */ | |
245 | int running; | |
246 | ||
a94434b6 | 247 | /* Split horizon flag. */ |
248 | split_horizon_policy_t split_horizon; | |
249 | split_horizon_policy_t split_horizon_default; | |
250 | ||
718e3744 | 251 | /* For filter type slot. */ |
252 | #define RIPNG_FILTER_IN 0 | |
253 | #define RIPNG_FILTER_OUT 1 | |
254 | #define RIPNG_FILTER_MAX 2 | |
255 | ||
256 | /* Access-list. */ | |
257 | struct access_list *list[RIPNG_FILTER_MAX]; | |
258 | ||
259 | /* Prefix-list. */ | |
260 | struct prefix_list *prefix[RIPNG_FILTER_MAX]; | |
261 | ||
262 | /* Route-map. */ | |
263 | struct route_map *routemap[RIPNG_FILTER_MAX]; | |
264 | ||
a94434b6 | 265 | #ifdef notyet |
266 | #if 0 | |
718e3744 | 267 | /* RIPng tag configuration. */ |
268 | struct ripng_tag *rtag; | |
a94434b6 | 269 | #endif /* 0 */ |
270 | #endif /* notyet */ | |
718e3744 | 271 | |
272 | /* Default information originate. */ | |
273 | u_char default_originate; | |
274 | ||
275 | /* Default information only. */ | |
276 | u_char default_only; | |
277 | ||
278 | /* Wake up thread. */ | |
279 | struct thread *t_wakeup; | |
280 | ||
281 | /* Passive interface. */ | |
282 | int passive; | |
283 | }; | |
284 | ||
a94434b6 | 285 | /* RIPng peer information. */ |
286 | struct ripng_peer | |
287 | { | |
288 | /* Peer address. */ | |
289 | struct in6_addr addr; | |
290 | ||
291 | /* Peer RIPng tag value. */ | |
292 | int domain; | |
293 | ||
294 | /* Last update time. */ | |
295 | time_t uptime; | |
296 | ||
297 | /* Peer RIP version. */ | |
298 | u_char version; | |
299 | ||
300 | /* Statistics. */ | |
301 | int recv_badpackets; | |
302 | int recv_badroutes; | |
303 | ||
304 | /* Timeout thread. */ | |
305 | struct thread *t_timeout; | |
306 | }; | |
307 | ||
718e3744 | 308 | /* All RIPng events. */ |
309 | enum ripng_event | |
310 | { | |
311 | RIPNG_READ, | |
312 | RIPNG_ZEBRA, | |
313 | RIPNG_REQUEST_EVENT, | |
314 | RIPNG_UPDATE_EVENT, | |
315 | RIPNG_TRIGGERED_UPDATE, | |
316 | }; | |
317 | ||
318 | /* RIPng timer on/off macro. */ | |
319 | #define RIPNG_TIMER_ON(T,F,V) \ | |
320 | do { \ | |
321 | if (!(T)) \ | |
322 | (T) = thread_add_timer (master, (F), rinfo, (V)); \ | |
323 | } while (0) | |
324 | ||
325 | #define RIPNG_TIMER_OFF(T) \ | |
326 | do { \ | |
327 | if (T) \ | |
328 | { \ | |
329 | thread_cancel(T); \ | |
330 | (T) = NULL; \ | |
331 | } \ | |
332 | } while (0) | |
333 | ||
334 | /* Count prefix size from mask length */ | |
335 | #define PSIZE(a) (((a) + 7) / (8)) | |
336 | ||
337 | /* Extern variables. */ | |
338 | extern struct ripng *ripng; | |
339 | ||
340 | extern struct thread_master *master; | |
341 | ||
342 | /* Prototypes. */ | |
343 | void ripng_init (); | |
a94434b6 | 344 | void ripng_reset (); |
345 | void ripng_clean (); | |
346 | void ripng_clean_network (); | |
347 | void ripng_interface_clean (); | |
348 | void ripng_interface_reset (); | |
349 | void ripng_passive_interface_clean (); | |
718e3744 | 350 | void ripng_if_init (); |
a94434b6 | 351 | void ripng_route_map_init (); |
352 | void ripng_route_map_reset (); | |
718e3744 | 353 | void ripng_terminate (); |
a94434b6 | 354 | /* zclient_init() is done by ripng_zebra.c:zebra_init() */ |
718e3744 | 355 | void zebra_init (); |
a94434b6 | 356 | void ripng_zclient_start (); |
357 | void ripng_zclient_reset (); | |
358 | void ripng_offset_init (); | |
359 | ||
360 | int config_write_ripng_offset_list (struct vty *); | |
361 | ||
362 | void ripng_peer_init (); | |
363 | void ripng_peer_update (struct sockaddr_in6 *, u_char); | |
364 | void ripng_peer_bad_route (struct sockaddr_in6 *); | |
365 | void ripng_peer_bad_packet (struct sockaddr_in6 *); | |
366 | void ripng_peer_display (struct vty *); | |
367 | struct ripng_peer *ripng_peer_lookup (struct in6_addr *); | |
368 | struct ripng_peer *ripng_peer_lookup_next (struct in6_addr *); | |
369 | ||
370 | int ripng_offset_list_apply_in (struct prefix_ipv6 *, struct interface *, u_char *); | |
371 | int ripng_offset_list_apply_out (struct prefix_ipv6 *, struct interface *, u_char *); | |
372 | void ripng_offset_clean (); | |
373 | ||
718e3744 | 374 | struct ripng_info * ripng_info_new (); |
375 | void ripng_info_free (struct ripng_info *rinfo); | |
376 | void ripng_event (enum ripng_event, int); | |
377 | int ripng_request (struct interface *ifp); | |
a94434b6 | 378 | void ripng_redistribute_add (int, int, struct prefix_ipv6 *, unsigned int, |
379 | struct in6_addr *); | |
718e3744 | 380 | void ripng_redistribute_delete (int, int, struct prefix_ipv6 *, unsigned int); |
381 | void ripng_redistribute_withdraw (int type); | |
382 | ||
383 | void ripng_distribute_update_interface (struct interface *); | |
384 | void ripng_if_rmap_update_interface (struct interface *); | |
385 | ||
386 | void ripng_zebra_ipv6_add (struct prefix_ipv6 *p, struct in6_addr *nexthop, unsigned int ifindex); | |
387 | void ripng_zebra_ipv6_delete (struct prefix_ipv6 *p, struct in6_addr *nexthop, unsigned int ifindex); | |
a94434b6 | 388 | |
389 | void ripng_redistribute_clean (); | |
390 | ||
391 | const char *inet6_ntop (struct in6_addr *p); | |
392 | ||
393 | int ripng_write_rte (int num, struct stream *s, struct prefix_ipv6 *p, | |
394 | struct in6_addr *nexthop, u_int16_t tag, u_char metric); | |
395 | int ripng_send_packet (caddr_t buf, int bufsize, struct sockaddr_in6 *to, | |
396 | struct interface *ifp); | |
397 | ||
398 | void ripng_packet_dump (struct ripng_packet *packet, int size, char *sndrcv); | |
399 | ||
718e3744 | 400 | |
401 | #endif /* _ZEBRA_RIPNG_RIPNGD_H */ |