]>
Commit | Line | Data |
---|---|---|
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 along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #ifndef _ZEBRA_RIPNG_RIPNGD_H | |
23 | #define _ZEBRA_RIPNG_RIPNGD_H | |
24 | ||
25 | #include <zclient.h> | |
26 | #include <vty.h> | |
27 | #include <distribute.h> | |
28 | #include <vector.h> | |
29 | #include <memory.h> | |
30 | ||
31 | /* RIPng version and port number. */ | |
32 | #define RIPNG_V1 1 | |
33 | #define RIPNG_PORT_DEFAULT 521 | |
34 | #define RIPNG_VTY_PORT 2603 | |
35 | #define RIPNG_MAX_PACKET_SIZE 1500 | |
36 | #define RIPNG_PRIORITY_DEFAULT 0 | |
37 | ||
38 | /* RIPng commands. */ | |
39 | #define RIPNG_REQUEST 1 | |
40 | #define RIPNG_RESPONSE 2 | |
41 | ||
42 | /* RIPng metric and multicast group address. */ | |
43 | #define RIPNG_METRIC_INFINITY 16 | |
44 | #define RIPNG_METRIC_NEXTHOP 0xff | |
45 | #define RIPNG_GROUP "ff02::9" | |
46 | ||
47 | /* RIPng peer timeout value. */ | |
48 | #define RIPNG_PEER_TIMER_DEFAULT 180 | |
49 | ||
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 | |
56 | #define RIPNG_ROUTE_DEFAULT 2 | |
57 | #define RIPNG_ROUTE_REDISTRIBUTE 3 | |
58 | #define RIPNG_ROUTE_INTERFACE 4 | |
59 | #define RIPNG_ROUTE_AGGREGATE 5 | |
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 | ||
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 | /* For max RTE calculation. */ | |
77 | #ifndef IPV6_HDRLEN | |
78 | #define IPV6_HDRLEN 40 | |
79 | #endif /* IPV6_HDRLEN */ | |
80 | ||
81 | #ifndef IFMINMTU | |
82 | #define IFMINMTU 576 | |
83 | #endif /* IFMINMTU */ | |
84 | ||
85 | /* YANG paths */ | |
86 | #define RIPNG_INSTANCE "/frr-ripngd:ripngd/instance" | |
87 | #define RIPNG_IFACE "/frr-interface:lib/interface/frr-ripngd:ripng" | |
88 | ||
89 | DECLARE_MGROUP(RIPNGD) | |
90 | ||
91 | /* RIPng structure. */ | |
92 | struct ripng { | |
93 | RB_ENTRY(ripng) entry; | |
94 | ||
95 | /* VRF this routing instance is associated with. */ | |
96 | char *vrf_name; | |
97 | ||
98 | /* VRF backpointer (might be NULL if the VRF doesn't exist). */ | |
99 | struct vrf *vrf; | |
100 | ||
101 | /* Status of the routing instance. */ | |
102 | bool enabled; | |
103 | ||
104 | /* RIPng socket. */ | |
105 | int sock; | |
106 | ||
107 | /* RIPng Parameters.*/ | |
108 | uint8_t command; | |
109 | uint8_t version; | |
110 | uint16_t update_time; | |
111 | uint16_t timeout_time; | |
112 | uint16_t garbage_time; | |
113 | int max_mtu; | |
114 | uint8_t default_metric; | |
115 | ||
116 | /* Input/output buffer of RIPng. */ | |
117 | struct stream *ibuf; | |
118 | struct stream *obuf; | |
119 | ||
120 | /* RIPng routing information base. */ | |
121 | struct agg_table *table; | |
122 | ||
123 | /* Linked list of RIPng peers. */ | |
124 | struct list *peer_list; | |
125 | ||
126 | /* RIPng enabled interfaces. */ | |
127 | vector enable_if; | |
128 | ||
129 | /* RIPng enabled networks. */ | |
130 | struct agg_table *enable_network; | |
131 | ||
132 | /* Vector to store passive-interface name. */ | |
133 | vector passive_interface; | |
134 | ||
135 | /* RIPng offset-lists. */ | |
136 | struct list *offset_list_master; | |
137 | ||
138 | /* RIPng threads. */ | |
139 | struct thread *t_read; | |
140 | struct thread *t_write; | |
141 | struct thread *t_update; | |
142 | struct thread *t_garbage; | |
143 | struct thread *t_zebra; | |
144 | ||
145 | /* Triggered update hack. */ | |
146 | int trigger; | |
147 | struct thread *t_triggered_update; | |
148 | struct thread *t_triggered_interval; | |
149 | ||
150 | /* RIPng ECMP flag */ | |
151 | bool ecmp; | |
152 | ||
153 | /* RIPng redistribute configuration. */ | |
154 | struct { | |
155 | bool enabled; | |
156 | struct { | |
157 | char *name; | |
158 | struct route_map *map; | |
159 | } route_map; | |
160 | bool metric_config; | |
161 | uint8_t metric; | |
162 | } redist[ZEBRA_ROUTE_MAX]; | |
163 | ||
164 | /* For distribute-list container */ | |
165 | struct distribute_ctx *distribute_ctx; | |
166 | ||
167 | /* For if_rmap container */ | |
168 | struct if_rmap_ctx *if_rmap_ctx; | |
169 | }; | |
170 | RB_HEAD(ripng_instance_head, ripng); | |
171 | RB_PROTOTYPE(ripng_instance_head, ripng, entry, ripng_instance_compare) | |
172 | ||
173 | /* Routing table entry. */ | |
174 | struct rte { | |
175 | struct in6_addr addr; /* RIPng destination prefix */ | |
176 | uint16_t tag; /* RIPng tag */ | |
177 | uint8_t prefixlen; /* Length of the RIPng prefix */ | |
178 | uint8_t metric; /* Metric of the RIPng route */ | |
179 | /* The nexthop is stored by the structure | |
180 | * ripng_nexthop within ripngd.c */ | |
181 | }; | |
182 | ||
183 | /* RIPNG send packet. */ | |
184 | struct ripng_packet { | |
185 | uint8_t command; | |
186 | uint8_t version; | |
187 | uint16_t zero; | |
188 | struct rte rte[1]; | |
189 | }; | |
190 | ||
191 | /* Each route's information. */ | |
192 | struct ripng_info { | |
193 | /* This route's type. Static, ripng or aggregate. */ | |
194 | uint8_t type; | |
195 | ||
196 | /* Sub type for static route. */ | |
197 | uint8_t sub_type; | |
198 | ||
199 | /* RIPng specific information */ | |
200 | struct in6_addr nexthop; | |
201 | struct in6_addr from; | |
202 | ||
203 | /* Which interface does this route come from. */ | |
204 | ifindex_t ifindex; | |
205 | ||
206 | /* Metric of this route. */ | |
207 | uint8_t metric; | |
208 | ||
209 | /* Tag field of RIPng packet.*/ | |
210 | uint16_t tag; | |
211 | ||
212 | /* For aggregation. */ | |
213 | unsigned int suppress; | |
214 | ||
215 | /* Flags of RIPng route. */ | |
216 | #define RIPNG_RTF_FIB 1 | |
217 | #define RIPNG_RTF_CHANGED 2 | |
218 | uint8_t flags; | |
219 | ||
220 | /* Garbage collect timer. */ | |
221 | struct thread *t_timeout; | |
222 | struct thread *t_garbage_collect; | |
223 | ||
224 | /* Route-map features - this variables can be changed. */ | |
225 | struct in6_addr nexthop_out; | |
226 | uint8_t metric_set; | |
227 | uint8_t metric_out; | |
228 | uint16_t tag_out; | |
229 | ||
230 | struct agg_node *rp; | |
231 | }; | |
232 | ||
233 | #ifdef notyet | |
234 | #if 0 | |
235 | /* RIPng tag structure. */ | |
236 | struct ripng_tag | |
237 | { | |
238 | /* Tag value. */ | |
239 | uint16_t tag; | |
240 | ||
241 | /* Port. */ | |
242 | uint16_t port; | |
243 | ||
244 | /* Multicast group. */ | |
245 | struct in6_addr maddr; | |
246 | ||
247 | /* Table number. */ | |
248 | int table; | |
249 | ||
250 | /* Distance. */ | |
251 | int distance; | |
252 | ||
253 | /* Split horizon. */ | |
254 | uint8_t split_horizon; | |
255 | ||
256 | /* Poison reverse. */ | |
257 | uint8_t poison_reverse; | |
258 | }; | |
259 | #endif /* 0 */ | |
260 | #endif /* not yet */ | |
261 | ||
262 | typedef enum { | |
263 | RIPNG_NO_SPLIT_HORIZON = 0, | |
264 | RIPNG_SPLIT_HORIZON, | |
265 | RIPNG_SPLIT_HORIZON_POISONED_REVERSE | |
266 | } split_horizon_policy_t; | |
267 | ||
268 | /* RIPng specific interface configuration. */ | |
269 | struct ripng_interface { | |
270 | /* Parent routing instance. */ | |
271 | struct ripng *ripng; | |
272 | ||
273 | /* RIPng is enabled on this interface. */ | |
274 | int enable_network; | |
275 | int enable_interface; | |
276 | ||
277 | /* RIPng is running on this interface. */ | |
278 | int running; | |
279 | ||
280 | /* Split horizon flag. */ | |
281 | split_horizon_policy_t split_horizon; | |
282 | ||
283 | /* For filter type slot. */ | |
284 | #define RIPNG_FILTER_IN 0 | |
285 | #define RIPNG_FILTER_OUT 1 | |
286 | #define RIPNG_FILTER_MAX 2 | |
287 | ||
288 | /* Access-list. */ | |
289 | struct access_list *list[RIPNG_FILTER_MAX]; | |
290 | ||
291 | /* Prefix-list. */ | |
292 | struct prefix_list *prefix[RIPNG_FILTER_MAX]; | |
293 | ||
294 | /* Route-map. */ | |
295 | struct route_map *routemap[RIPNG_FILTER_MAX]; | |
296 | ||
297 | #ifdef notyet | |
298 | #if 0 | |
299 | /* RIPng tag configuration. */ | |
300 | struct ripng_tag *rtag; | |
301 | #endif /* 0 */ | |
302 | #endif /* notyet */ | |
303 | ||
304 | /* Default information originate. */ | |
305 | uint8_t default_originate; | |
306 | ||
307 | /* Default information only. */ | |
308 | uint8_t default_only; | |
309 | ||
310 | /* Wake up thread. */ | |
311 | struct thread *t_wakeup; | |
312 | ||
313 | /* Passive interface. */ | |
314 | int passive; | |
315 | }; | |
316 | ||
317 | /* RIPng peer information. */ | |
318 | struct ripng_peer { | |
319 | /* Parent routing instance. */ | |
320 | struct ripng *ripng; | |
321 | ||
322 | /* Peer address. */ | |
323 | struct in6_addr addr; | |
324 | ||
325 | /* Peer RIPng tag value. */ | |
326 | int domain; | |
327 | ||
328 | /* Last update time. */ | |
329 | time_t uptime; | |
330 | ||
331 | /* Peer RIP version. */ | |
332 | uint8_t version; | |
333 | ||
334 | /* Statistics. */ | |
335 | int recv_badpackets; | |
336 | int recv_badroutes; | |
337 | ||
338 | /* Timeout thread. */ | |
339 | struct thread *t_timeout; | |
340 | }; | |
341 | ||
342 | /* All RIPng events. */ | |
343 | enum ripng_event { | |
344 | RIPNG_READ, | |
345 | RIPNG_ZEBRA, | |
346 | RIPNG_REQUEST_EVENT, | |
347 | RIPNG_UPDATE_EVENT, | |
348 | RIPNG_TRIGGERED_UPDATE, | |
349 | }; | |
350 | ||
351 | /* RIPng timer on/off macro. */ | |
352 | #define RIPNG_TIMER_ON(T,F,V) thread_add_timer (master, (F), rinfo, (V), &(T)) | |
353 | ||
354 | #define RIPNG_TIMER_OFF(T) \ | |
355 | do { \ | |
356 | if (T) { \ | |
357 | thread_cancel(T); \ | |
358 | (T) = NULL; \ | |
359 | } \ | |
360 | } while (0) | |
361 | ||
362 | #define RIPNG_OFFSET_LIST_IN 0 | |
363 | #define RIPNG_OFFSET_LIST_OUT 1 | |
364 | #define RIPNG_OFFSET_LIST_MAX 2 | |
365 | ||
366 | struct ripng_offset_list { | |
367 | /* Parent routing instance. */ | |
368 | struct ripng *ripng; | |
369 | ||
370 | char *ifname; | |
371 | ||
372 | struct { | |
373 | char *alist_name; | |
374 | /* struct access_list *alist; */ | |
375 | uint8_t metric; | |
376 | } direct[RIPNG_OFFSET_LIST_MAX]; | |
377 | }; | |
378 | ||
379 | /* Extern variables. */ | |
380 | extern struct zebra_privs_t ripngd_privs; | |
381 | extern struct thread_master *master; | |
382 | extern struct ripng_instance_head ripng_instances; | |
383 | ||
384 | /* Prototypes. */ | |
385 | extern void ripng_init(void); | |
386 | extern void ripng_clean(struct ripng *ripng); | |
387 | extern void ripng_clean_network(struct ripng *ripng); | |
388 | extern void ripng_interface_clean(struct ripng *ripng); | |
389 | extern int ripng_enable_network_add(struct ripng *ripng, struct prefix *p); | |
390 | extern int ripng_enable_network_delete(struct ripng *ripng, struct prefix *p); | |
391 | extern int ripng_enable_if_add(struct ripng *ripng, const char *ifname); | |
392 | extern int ripng_enable_if_delete(struct ripng *ripng, const char *ifname); | |
393 | extern int ripng_passive_interface_set(struct ripng *ripng, const char *ifname); | |
394 | extern int ripng_passive_interface_unset(struct ripng *ripng, | |
395 | const char *ifname); | |
396 | extern void ripng_passive_interface_clean(struct ripng *ripng); | |
397 | extern void ripng_if_init(void); | |
398 | extern void ripng_route_map_init(void); | |
399 | extern void ripng_zebra_vrf_register(struct vrf *vrf); | |
400 | extern void ripng_zebra_vrf_deregister(struct vrf *vrf); | |
401 | extern void ripng_terminate(void); | |
402 | /* zclient_init() is done by ripng_zebra.c:zebra_init() */ | |
403 | extern void zebra_init(struct thread_master *); | |
404 | extern void ripng_zebra_stop(void); | |
405 | extern void ripng_redistribute_conf_update(struct ripng *ripng, int type); | |
406 | extern void ripng_redistribute_conf_delete(struct ripng *ripng, int type); | |
407 | ||
408 | extern void ripng_peer_update(struct ripng *ripng, struct sockaddr_in6 *from, | |
409 | uint8_t version); | |
410 | extern void ripng_peer_bad_route(struct ripng *ripng, | |
411 | struct sockaddr_in6 *from); | |
412 | extern void ripng_peer_bad_packet(struct ripng *ripng, | |
413 | struct sockaddr_in6 *from); | |
414 | extern void ripng_peer_display(struct vty *vty, struct ripng *ripng); | |
415 | extern struct ripng_peer *ripng_peer_lookup(struct ripng *ripng, | |
416 | struct in6_addr *addr); | |
417 | extern struct ripng_peer *ripng_peer_lookup_next(struct ripng *ripng, | |
418 | struct in6_addr *addr); | |
419 | extern int ripng_peer_list_cmp(struct ripng_peer *p1, struct ripng_peer *p2); | |
420 | extern void ripng_peer_list_del(void *arg); | |
421 | ||
422 | extern struct ripng_offset_list *ripng_offset_list_new(struct ripng *ripng, | |
423 | const char *ifname); | |
424 | extern void ripng_offset_list_del(struct ripng_offset_list *offset); | |
425 | extern void ripng_offset_list_free(struct ripng_offset_list *offset); | |
426 | extern struct ripng_offset_list *ripng_offset_list_lookup(struct ripng *ripng, | |
427 | const char *ifname); | |
428 | extern int ripng_offset_list_apply_in(struct ripng *ripng, | |
429 | struct prefix_ipv6 *p, | |
430 | struct interface *ifp, uint8_t *metric); | |
431 | extern int ripng_offset_list_apply_out(struct ripng *ripng, | |
432 | struct prefix_ipv6 *p, | |
433 | struct interface *ifp, uint8_t *metric); | |
434 | extern int offset_list_cmp(struct ripng_offset_list *o1, | |
435 | struct ripng_offset_list *o2); | |
436 | ||
437 | extern int ripng_route_rte(struct ripng_info *rinfo); | |
438 | extern struct ripng_info *ripng_info_new(void); | |
439 | extern void ripng_info_free(struct ripng_info *rinfo); | |
440 | extern struct ripng *ripng_info_get_instance(const struct ripng_info *rinfo); | |
441 | extern void ripng_event(struct ripng *ripng, enum ripng_event event, int sock); | |
442 | extern int ripng_request(struct interface *ifp); | |
443 | extern void ripng_redistribute_add(struct ripng *ripng, int type, int sub_type, | |
444 | struct prefix_ipv6 *p, ifindex_t ifindex, | |
445 | struct in6_addr *nexthop, route_tag_t tag); | |
446 | extern void ripng_redistribute_delete(struct ripng *ripng, int type, | |
447 | int sub_type, struct prefix_ipv6 *p, | |
448 | ifindex_t ifindex); | |
449 | extern void ripng_redistribute_withdraw(struct ripng *ripng, int type); | |
450 | ||
451 | extern void ripng_ecmp_disable(struct ripng *ripng); | |
452 | extern void ripng_distribute_update_interface(struct interface *); | |
453 | extern void ripng_if_rmap_update_interface(struct interface *); | |
454 | ||
455 | extern void ripng_zebra_ipv6_add(struct ripng *ripng, struct agg_node *node); | |
456 | extern void ripng_zebra_ipv6_delete(struct ripng *ripng, struct agg_node *node); | |
457 | ||
458 | extern void ripng_redistribute_enable(struct ripng *ripng); | |
459 | extern void ripng_redistribute_disable(struct ripng *ripng); | |
460 | extern int ripng_redistribute_check(struct ripng *ripng, int type); | |
461 | extern void ripng_redistribute_write(struct vty *vty, struct ripng *ripng); | |
462 | ||
463 | extern int ripng_write_rte(int num, struct stream *s, struct prefix_ipv6 *p, | |
464 | struct in6_addr *nexthop, uint16_t tag, | |
465 | uint8_t metric); | |
466 | extern int ripng_send_packet(caddr_t buf, int bufsize, struct sockaddr_in6 *to, | |
467 | struct interface *ifp); | |
468 | ||
469 | extern void ripng_packet_dump(struct ripng_packet *packet, int size, | |
470 | const char *sndrcv); | |
471 | ||
472 | extern int ripng_interface_up(ZAPI_CALLBACK_ARGS); | |
473 | extern int ripng_interface_down(ZAPI_CALLBACK_ARGS); | |
474 | extern int ripng_interface_add(ZAPI_CALLBACK_ARGS); | |
475 | extern int ripng_interface_delete(ZAPI_CALLBACK_ARGS); | |
476 | extern int ripng_interface_address_add(ZAPI_CALLBACK_ARGS); | |
477 | extern int ripng_interface_address_delete(ZAPI_CALLBACK_ARGS); | |
478 | extern int ripng_interface_vrf_update(ZAPI_CALLBACK_ARGS); | |
479 | extern void ripng_interface_sync(struct interface *ifp); | |
480 | ||
481 | extern struct ripng *ripng_lookup_by_vrf_id(vrf_id_t vrf_id); | |
482 | extern struct ripng *ripng_lookup_by_vrf_name(const char *vrf_name); | |
483 | extern struct ripng *ripng_create(const char *vrf_name, struct vrf *vrf, | |
484 | int socket); | |
485 | extern int ripng_make_socket(struct vrf *vrf); | |
486 | extern int ripng_network_write(struct vty *vty, struct ripng *ripng); | |
487 | ||
488 | extern struct ripng_info *ripng_ecmp_add(struct ripng *ripng, | |
489 | struct ripng_info *rinfo); | |
490 | extern struct ripng_info *ripng_ecmp_replace(struct ripng *ripng, | |
491 | struct ripng_info *rinfo); | |
492 | extern struct ripng_info *ripng_ecmp_delete(struct ripng *ripng, | |
493 | struct ripng_info *rinfo); | |
494 | ||
495 | extern void ripng_vrf_init(void); | |
496 | extern void ripng_vrf_terminate(void); | |
497 | extern void ripng_cli_init(void); | |
498 | ||
499 | #endif /* _ZEBRA_RIPNG_RIPNGD_H */ |