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718e3744 | 1 | /* RIP version 1 and 2. |
fbf5d033 | 2 | * Copyright (C) 2005 6WIND <alain.ritoux@6wind.com> |
718e3744 | 3 | * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro <kunihiro@zebra.org> |
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 | #include <zebra.h> | |
24 | ||
b2d7c082 | 25 | #include "vrf.h" |
718e3744 | 26 | #include "if.h" |
27 | #include "command.h" | |
28 | #include "prefix.h" | |
29 | #include "table.h" | |
30 | #include "thread.h" | |
31 | #include "memory.h" | |
32 | #include "log.h" | |
33 | #include "stream.h" | |
34 | #include "filter.h" | |
35 | #include "sockunion.h" | |
1af81933 | 36 | #include "sockopt.h" |
718e3744 | 37 | #include "routemap.h" |
16705130 | 38 | #include "if_rmap.h" |
718e3744 | 39 | #include "plist.h" |
40 | #include "distribute.h" | |
c1a03d47 | 41 | #include "md5.h" |
718e3744 | 42 | #include "keychain.h" |
edd7c245 | 43 | #include "privs.h" |
718e3744 | 44 | |
45 | #include "ripd/ripd.h" | |
46 | #include "ripd/rip_debug.h" | |
47 | ||
f6eacff4 DL |
48 | DEFINE_QOBJ_TYPE(rip) |
49 | ||
0b3acf4f | 50 | /* UDP receive buffer size */ |
51 | #define RIP_UDP_RCV_BUF 41600 | |
52 | ||
53 | /* privileges global */ | |
edd7c245 | 54 | extern struct zebra_privs_t ripd_privs; |
55 | ||
718e3744 | 56 | /* RIP Structure. */ |
57 | struct rip *rip = NULL; | |
58 | ||
59 | /* RIP neighbor address table. */ | |
60 | struct route_table *rip_neighbor_table; | |
61 | ||
62 | /* RIP route changes. */ | |
63 | long rip_global_route_changes = 0; | |
64 | ||
65 | /* RIP queries. */ | |
66 | long rip_global_queries = 0; | |
6b0655a2 | 67 | |
718e3744 | 68 | /* Prototypes. */ |
dc63bfd4 | 69 | static void rip_event (enum rip_event, int); |
70 | static void rip_output_process (struct connected *, struct sockaddr_in *, int, u_char); | |
71 | static int rip_triggered_update (struct thread *); | |
72 | static int rip_update_jitter (unsigned long); | |
6b0655a2 | 73 | |
718e3744 | 74 | /* RIP output routes type. */ |
75 | enum | |
76 | { | |
77 | rip_all_route, | |
78 | rip_changed_route | |
79 | }; | |
6b0655a2 | 80 | |
718e3744 | 81 | /* RIP command strings. */ |
1423c809 | 82 | static const struct message rip_msg[] = |
718e3744 | 83 | { |
84 | {RIP_REQUEST, "REQUEST"}, | |
85 | {RIP_RESPONSE, "RESPONSE"}, | |
86 | {RIP_TRACEON, "TRACEON"}, | |
87 | {RIP_TRACEOFF, "TRACEOFF"}, | |
88 | {RIP_POLL, "POLL"}, | |
89 | {RIP_POLL_ENTRY, "POLL ENTRY"}, | |
1423c809 | 90 | {0, NULL}, |
718e3744 | 91 | }; |
6b0655a2 | 92 | |
718e3744 | 93 | /* Utility function to set boradcast option to the socket. */ |
dc63bfd4 | 94 | static int |
718e3744 | 95 | sockopt_broadcast (int sock) |
96 | { | |
97 | int ret; | |
98 | int on = 1; | |
99 | ||
100 | ret = setsockopt (sock, SOL_SOCKET, SO_BROADCAST, (char *) &on, sizeof on); | |
101 | if (ret < 0) | |
102 | { | |
103 | zlog_warn ("can't set sockopt SO_BROADCAST to socket %d", sock); | |
104 | return -1; | |
105 | } | |
106 | return 0; | |
107 | } | |
108 | ||
dc63bfd4 | 109 | static int |
718e3744 | 110 | rip_route_rte (struct rip_info *rinfo) |
111 | { | |
112 | return (rinfo->type == ZEBRA_ROUTE_RIP && rinfo->sub_type == RIP_ROUTE_RTE); | |
113 | } | |
114 | ||
dc63bfd4 | 115 | static struct rip_info * |
393deb9b | 116 | rip_info_new (void) |
718e3744 | 117 | { |
393deb9b | 118 | return XCALLOC (MTYPE_RIP_INFO, sizeof (struct rip_info)); |
718e3744 | 119 | } |
120 | ||
121 | void | |
122 | rip_info_free (struct rip_info *rinfo) | |
123 | { | |
124 | XFREE (MTYPE_RIP_INFO, rinfo); | |
125 | } | |
126 | ||
127 | /* RIP route garbage collect timer. */ | |
dc63bfd4 | 128 | static int |
718e3744 | 129 | rip_garbage_collect (struct thread *t) |
130 | { | |
131 | struct rip_info *rinfo; | |
132 | struct route_node *rp; | |
133 | ||
134 | rinfo = THREAD_ARG (t); | |
135 | rinfo->t_garbage_collect = NULL; | |
136 | ||
137 | /* Off timeout timer. */ | |
138 | RIP_TIMER_OFF (rinfo->t_timeout); | |
139 | ||
140 | /* Get route_node pointer. */ | |
141 | rp = rinfo->rp; | |
142 | ||
143 | /* Unlock route_node. */ | |
bce8e868 LF |
144 | listnode_delete (rp->info, rinfo); |
145 | if (list_isempty ((struct list *)rp->info)) | |
146 | { | |
147 | list_free (rp->info); | |
148 | rp->info = NULL; | |
149 | route_unlock_node (rp); | |
150 | } | |
718e3744 | 151 | |
152 | /* Free RIP routing information. */ | |
153 | rip_info_free (rinfo); | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
bce8e868 LF |
158 | static void rip_timeout_update (struct rip_info *rinfo); |
159 | ||
160 | /* Add new route to the ECMP list. | |
8478ae7e LF |
161 | * RETURN: the new entry added in the list, or NULL if it is not the first |
162 | * entry and ECMP is not allowed. | |
bce8e868 LF |
163 | */ |
164 | struct rip_info * | |
165 | rip_ecmp_add (struct rip_info *rinfo_new) | |
718e3744 | 166 | { |
bce8e868 LF |
167 | struct route_node *rp = rinfo_new->rp; |
168 | struct rip_info *rinfo = NULL; | |
169 | struct list *list = NULL; | |
718e3744 | 170 | |
bce8e868 LF |
171 | if (rp->info == NULL) |
172 | rp->info = list_new (); | |
173 | list = (struct list *)rp->info; | |
174 | ||
8478ae7e LF |
175 | /* If ECMP is not allowed and some entry already exists in the list, |
176 | * do nothing. */ | |
177 | if (listcount (list) && !rip->ecmp) | |
178 | return NULL; | |
179 | ||
bce8e868 LF |
180 | rinfo = rip_info_new (); |
181 | memcpy (rinfo, rinfo_new, sizeof (struct rip_info)); | |
182 | listnode_add (list, rinfo); | |
183 | ||
184 | if (rip_route_rte (rinfo)) | |
185 | { | |
186 | rip_timeout_update (rinfo); | |
187 | rip_zebra_ipv4_add (rp); | |
188 | } | |
189 | ||
190 | /* Set the route change flag on the first entry. */ | |
191 | rinfo = listgetdata (listhead (list)); | |
192 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
193 | ||
194 | /* Signal the output process to trigger an update (see section 2.5). */ | |
195 | rip_event (RIP_TRIGGERED_UPDATE, 0); | |
718e3744 | 196 | |
bce8e868 LF |
197 | return rinfo; |
198 | } | |
199 | ||
200 | /* Replace the ECMP list with the new route. | |
201 | * RETURN: the new entry added in the list | |
202 | */ | |
203 | struct rip_info * | |
204 | rip_ecmp_replace (struct rip_info *rinfo_new) | |
205 | { | |
206 | struct route_node *rp = rinfo_new->rp; | |
207 | struct list *list = (struct list *)rp->info; | |
208 | struct rip_info *rinfo = NULL, *tmp_rinfo = NULL; | |
209 | struct listnode *node = NULL, *nextnode = NULL; | |
210 | ||
211 | if (list == NULL || listcount (list) == 0) | |
212 | return rip_ecmp_add (rinfo_new); | |
213 | ||
214 | /* Get the first entry */ | |
215 | rinfo = listgetdata (listhead (list)); | |
216 | ||
217 | /* Learnt route replaced by a local one. Delete it from zebra. */ | |
218 | if (rip_route_rte (rinfo) && !rip_route_rte (rinfo_new)) | |
219 | if (CHECK_FLAG (rinfo->flags, RIP_RTF_FIB)) | |
220 | rip_zebra_ipv4_delete (rp); | |
221 | ||
222 | /* Re-use the first entry, and delete the others. */ | |
223 | for (ALL_LIST_ELEMENTS (list, node, nextnode, tmp_rinfo)) | |
224 | if (tmp_rinfo != rinfo) | |
225 | { | |
226 | RIP_TIMER_OFF (tmp_rinfo->t_timeout); | |
227 | RIP_TIMER_OFF (tmp_rinfo->t_garbage_collect); | |
228 | list_delete_node (list, node); | |
229 | rip_info_free (tmp_rinfo); | |
230 | } | |
718e3744 | 231 | |
bce8e868 LF |
232 | RIP_TIMER_OFF (rinfo->t_timeout); |
233 | RIP_TIMER_OFF (rinfo->t_garbage_collect); | |
234 | memcpy (rinfo, rinfo_new, sizeof (struct rip_info)); | |
718e3744 | 235 | |
bce8e868 LF |
236 | if (rip_route_rte (rinfo)) |
237 | { | |
238 | rip_timeout_update (rinfo); | |
239 | /* The ADD message implies an update. */ | |
240 | rip_zebra_ipv4_add (rp); | |
241 | } | |
718e3744 | 242 | |
bce8e868 LF |
243 | /* Set the route change flag. */ |
244 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
718e3744 | 245 | |
bce8e868 | 246 | /* Signal the output process to trigger an update (see section 2.5). */ |
718e3744 | 247 | rip_event (RIP_TRIGGERED_UPDATE, 0); |
248 | ||
bce8e868 LF |
249 | return rinfo; |
250 | } | |
251 | ||
252 | /* Delete one route from the ECMP list. | |
253 | * RETURN: | |
254 | * null - the entry is freed, and other entries exist in the list | |
255 | * the entry - the entry is the last one in the list; its metric is set | |
256 | * to INFINITY, and the garbage collector is started for it | |
257 | */ | |
258 | struct rip_info * | |
259 | rip_ecmp_delete (struct rip_info *rinfo) | |
260 | { | |
261 | struct route_node *rp = rinfo->rp; | |
262 | struct list *list = (struct list *)rp->info; | |
263 | ||
264 | RIP_TIMER_OFF (rinfo->t_timeout); | |
265 | ||
266 | if (listcount (list) > 1) | |
267 | { | |
268 | /* Some other ECMP entries still exist. Just delete this entry. */ | |
269 | RIP_TIMER_OFF (rinfo->t_garbage_collect); | |
270 | listnode_delete (list, rinfo); | |
271 | if (rip_route_rte (rinfo) && CHECK_FLAG (rinfo->flags, RIP_RTF_FIB)) | |
272 | /* The ADD message implies the update. */ | |
273 | rip_zebra_ipv4_add (rp); | |
274 | rip_info_free (rinfo); | |
275 | rinfo = NULL; | |
276 | } | |
277 | else | |
278 | { | |
279 | assert (rinfo == listgetdata (listhead (list))); | |
280 | ||
281 | /* This is the only entry left in the list. We must keep it in | |
282 | * the list for garbage collection time, with INFINITY metric. */ | |
283 | ||
284 | rinfo->metric = RIP_METRIC_INFINITY; | |
285 | RIP_TIMER_ON (rinfo->t_garbage_collect, | |
286 | rip_garbage_collect, rip->garbage_time); | |
287 | ||
288 | if (rip_route_rte (rinfo) && CHECK_FLAG (rinfo->flags, RIP_RTF_FIB)) | |
289 | rip_zebra_ipv4_delete (rp); | |
290 | } | |
291 | ||
292 | /* Set the route change flag on the first entry. */ | |
293 | rinfo = listgetdata (listhead (list)); | |
294 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
295 | ||
296 | /* Signal the output process to trigger an update (see section 2.5). */ | |
297 | rip_event (RIP_TRIGGERED_UPDATE, 0); | |
298 | ||
299 | return rinfo; | |
300 | } | |
301 | ||
302 | /* Timeout RIP routes. */ | |
303 | static int | |
304 | rip_timeout (struct thread *t) | |
305 | { | |
306 | rip_ecmp_delete ((struct rip_info *)THREAD_ARG (t)); | |
718e3744 | 307 | return 0; |
308 | } | |
309 | ||
dc63bfd4 | 310 | static void |
718e3744 | 311 | rip_timeout_update (struct rip_info *rinfo) |
312 | { | |
313 | if (rinfo->metric != RIP_METRIC_INFINITY) | |
314 | { | |
315 | RIP_TIMER_OFF (rinfo->t_timeout); | |
316 | RIP_TIMER_ON (rinfo->t_timeout, rip_timeout, rip->timeout_time); | |
317 | } | |
318 | } | |
319 | ||
dc63bfd4 | 320 | static int |
7c989d74 | 321 | rip_filter (int rip_distribute, struct prefix_ipv4 *p, struct rip_interface *ri) |
718e3744 | 322 | { |
323 | struct distribute *dist; | |
324 | struct access_list *alist; | |
325 | struct prefix_list *plist; | |
7c989d74 | 326 | int distribute = rip_distribute == RIP_FILTER_OUT ? |
fb23cf4a | 327 | DISTRIBUTE_V4_OUT : DISTRIBUTE_V4_IN; |
7c989d74 | 328 | const char *inout = rip_distribute == RIP_FILTER_OUT ? "out" : "in"; |
718e3744 | 329 | |
330 | /* Input distribute-list filtering. */ | |
7c989d74 | 331 | if (ri->list[rip_distribute]) |
718e3744 | 332 | { |
7c989d74 | 333 | if (access_list_apply (ri->list[rip_distribute], |
718e3744 | 334 | (struct prefix *) p) == FILTER_DENY) |
335 | { | |
336 | if (IS_RIP_DEBUG_PACKET) | |
7c989d74 MB |
337 | zlog_debug ("%s/%d filtered by distribute %s", |
338 | inet_ntoa (p->prefix), p->prefixlen, inout); | |
718e3744 | 339 | return -1; |
340 | } | |
341 | } | |
7c989d74 | 342 | if (ri->prefix[rip_distribute]) |
718e3744 | 343 | { |
7c989d74 | 344 | if (prefix_list_apply (ri->prefix[rip_distribute], |
718e3744 | 345 | (struct prefix *) p) == PREFIX_DENY) |
346 | { | |
347 | if (IS_RIP_DEBUG_PACKET) | |
7c989d74 MB |
348 | zlog_debug ("%s/%d filtered by prefix-list %s", |
349 | inet_ntoa (p->prefix), p->prefixlen, inout); | |
718e3744 | 350 | return -1; |
351 | } | |
352 | } | |
353 | ||
354 | /* All interface filter check. */ | |
355 | dist = distribute_lookup (NULL); | |
356 | if (dist) | |
357 | { | |
7c989d74 | 358 | if (dist->list[distribute]) |
718e3744 | 359 | { |
7c989d74 | 360 | alist = access_list_lookup (AFI_IP, dist->list[distribute]); |
718e3744 | 361 | |
362 | if (alist) | |
363 | { | |
7c989d74 | 364 | if (access_list_apply (alist, (struct prefix *) p) == FILTER_DENY) |
718e3744 | 365 | { |
366 | if (IS_RIP_DEBUG_PACKET) | |
7c989d74 MB |
367 | zlog_debug ("%s/%d filtered by distribute %s", |
368 | inet_ntoa (p->prefix), p->prefixlen, inout); | |
718e3744 | 369 | return -1; |
370 | } | |
371 | } | |
372 | } | |
7c989d74 | 373 | if (dist->prefix[distribute]) |
718e3744 | 374 | { |
7c989d74 | 375 | plist = prefix_list_lookup (AFI_IP, dist->prefix[distribute]); |
718e3744 | 376 | |
377 | if (plist) | |
378 | { | |
379 | if (prefix_list_apply (plist, | |
380 | (struct prefix *) p) == PREFIX_DENY) | |
381 | { | |
382 | if (IS_RIP_DEBUG_PACKET) | |
7c989d74 MB |
383 | zlog_debug ("%s/%d filtered by prefix-list %s", |
384 | inet_ntoa (p->prefix), p->prefixlen, inout); | |
718e3744 | 385 | return -1; |
386 | } | |
387 | } | |
388 | } | |
389 | } | |
390 | return 0; | |
391 | } | |
392 | ||
393 | /* Check nexthop address validity. */ | |
394 | static int | |
395 | rip_nexthop_check (struct in_addr *addr) | |
396 | { | |
52dc7ee6 | 397 | struct listnode *node; |
398 | struct listnode *cnode; | |
718e3744 | 399 | struct interface *ifp; |
400 | struct connected *ifc; | |
401 | struct prefix *p; | |
402 | ||
403 | /* If nexthop address matches local configured address then it is | |
404 | invalid nexthop. */ | |
b2d7c082 DS |
405 | |
406 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), node, ifp)) | |
718e3744 | 407 | { |
1eb8ef25 | 408 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, ifc)) |
718e3744 | 409 | { |
718e3744 | 410 | p = ifc->address; |
411 | ||
412 | if (p->family == AF_INET | |
413 | && IPV4_ADDR_SAME (&p->u.prefix4, addr)) | |
414 | return -1; | |
415 | } | |
416 | } | |
417 | return 0; | |
418 | } | |
419 | ||
420 | /* RIP add route to routing table. */ | |
dc63bfd4 | 421 | static void |
718e3744 | 422 | rip_rte_process (struct rte *rte, struct sockaddr_in *from, |
a87552cd | 423 | struct interface *ifp) |
718e3744 | 424 | { |
425 | int ret; | |
426 | struct prefix_ipv4 p; | |
427 | struct route_node *rp; | |
bce8e868 | 428 | struct rip_info *rinfo = NULL, newinfo; |
718e3744 | 429 | struct rip_interface *ri; |
430 | struct in_addr *nexthop; | |
718e3744 | 431 | int same = 0; |
fbf5d033 | 432 | unsigned char old_dist, new_dist; |
bce8e868 LF |
433 | struct list *list = NULL; |
434 | struct listnode *node = NULL; | |
718e3744 | 435 | |
436 | /* Make prefix structure. */ | |
437 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
438 | p.family = AF_INET; | |
439 | p.prefix = rte->prefix; | |
440 | p.prefixlen = ip_masklen (rte->mask); | |
441 | ||
442 | /* Make sure mask is applied. */ | |
443 | apply_mask_ipv4 (&p); | |
444 | ||
445 | /* Apply input filters. */ | |
446 | ri = ifp->info; | |
447 | ||
7c989d74 | 448 | ret = rip_filter (RIP_FILTER_IN, &p, ri); |
718e3744 | 449 | if (ret < 0) |
450 | return; | |
451 | ||
bce8e868 LF |
452 | memset (&newinfo, 0, sizeof (newinfo)); |
453 | newinfo.type = ZEBRA_ROUTE_RIP; | |
454 | newinfo.sub_type = RIP_ROUTE_RTE; | |
455 | newinfo.nexthop = rte->nexthop; | |
456 | newinfo.from = from->sin_addr; | |
457 | newinfo.ifindex = ifp->ifindex; | |
458 | newinfo.metric = rte->metric; | |
459 | newinfo.metric_out = rte->metric; /* XXX */ | |
460 | newinfo.tag = ntohs (rte->tag); /* XXX */ | |
461 | ||
16705130 | 462 | /* Modify entry according to the interface routemap. */ |
463 | if (ri->routemap[RIP_FILTER_IN]) | |
464 | { | |
465 | int ret; | |
16705130 | 466 | |
467 | /* The object should be of the type of rip_info */ | |
a87552cd | 468 | ret = route_map_apply (ri->routemap[RIP_FILTER_IN], |
469 | (struct prefix *) &p, RMAP_RIP, &newinfo); | |
16705130 | 470 | |
471 | if (ret == RMAP_DENYMATCH) | |
a87552cd | 472 | { |
473 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 474 | zlog_debug ("RIP %s/%d is filtered by route-map in", |
a87552cd | 475 | inet_ntoa (p.prefix), p.prefixlen); |
476 | return; | |
477 | } | |
16705130 | 478 | |
479 | /* Get back the object */ | |
a87552cd | 480 | rte->nexthop = newinfo.nexthop_out; |
481 | rte->tag = htons (newinfo.tag_out); /* XXX */ | |
482 | rte->metric = newinfo.metric_out; /* XXX: the routemap uses the metric_out field */ | |
16705130 | 483 | } |
484 | ||
718e3744 | 485 | /* Once the entry has been validated, update the metric by |
486 | adding the cost of the network on wich the message | |
487 | arrived. If the result is greater than infinity, use infinity | |
488 | (RFC2453 Sec. 3.9.2) */ | |
489 | /* Zebra ripd can handle offset-list in. */ | |
490 | ret = rip_offset_list_apply_in (&p, ifp, &rte->metric); | |
491 | ||
492 | /* If offset-list does not modify the metric use interface's | |
493 | metric. */ | |
a87552cd | 494 | if (!ret) |
7b3b98ae | 495 | rte->metric += ifp->metric ? ifp->metric : 1; |
718e3744 | 496 | |
497 | if (rte->metric > RIP_METRIC_INFINITY) | |
498 | rte->metric = RIP_METRIC_INFINITY; | |
499 | ||
500 | /* Set nexthop pointer. */ | |
501 | if (rte->nexthop.s_addr == 0) | |
502 | nexthop = &from->sin_addr; | |
503 | else | |
504 | nexthop = &rte->nexthop; | |
505 | ||
16705130 | 506 | /* Check if nexthop address is myself, then do nothing. */ |
718e3744 | 507 | if (rip_nexthop_check (nexthop) < 0) |
508 | { | |
509 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 510 | zlog_debug ("Nexthop address %s is myself", inet_ntoa (*nexthop)); |
718e3744 | 511 | return; |
512 | } | |
513 | ||
514 | /* Get index for the prefix. */ | |
515 | rp = route_node_get (rip->table, (struct prefix *) &p); | |
516 | ||
bce8e868 LF |
517 | newinfo.rp = rp; |
518 | newinfo.nexthop = *nexthop; | |
519 | newinfo.metric = rte->metric; | |
520 | newinfo.tag = ntohs (rte->tag); | |
521 | newinfo.distance = rip_distance_apply (&newinfo); | |
522 | ||
523 | new_dist = newinfo.distance ? newinfo.distance : ZEBRA_RIP_DISTANCE_DEFAULT; | |
524 | ||
718e3744 | 525 | /* Check to see whether there is already RIP route on the table. */ |
bce8e868 LF |
526 | if ((list = rp->info) != NULL) |
527 | for (ALL_LIST_ELEMENTS_RO (list, node, rinfo)) | |
528 | { | |
529 | /* Need to compare with redistributed entry or local entry */ | |
530 | if (!rip_route_rte (rinfo)) | |
531 | break; | |
532 | ||
533 | if (IPV4_ADDR_SAME (&rinfo->from, &from->sin_addr) && | |
534 | IPV4_ADDR_SAME (&rinfo->nexthop, nexthop)) | |
535 | break; | |
536 | ||
537 | if (!listnextnode (node)) | |
538 | { | |
539 | /* Not found in the list */ | |
540 | ||
541 | if (rte->metric > rinfo->metric) | |
542 | { | |
543 | /* New route has a greater metric. Discard it. */ | |
544 | route_unlock_node (rp); | |
545 | return; | |
546 | } | |
547 | ||
548 | if (rte->metric < rinfo->metric) | |
549 | /* New route has a smaller metric. Replace the ECMP list | |
550 | * with the new one in below. */ | |
551 | break; | |
552 | ||
553 | /* Metrics are same. We compare the distances. */ | |
554 | old_dist = rinfo->distance ? \ | |
555 | rinfo->distance : ZEBRA_RIP_DISTANCE_DEFAULT; | |
556 | ||
557 | if (new_dist > old_dist) | |
558 | { | |
559 | /* New route has a greater distance. Discard it. */ | |
560 | route_unlock_node (rp); | |
561 | return; | |
562 | } | |
563 | ||
564 | if (new_dist < old_dist) | |
565 | /* New route has a smaller distance. Replace the ECMP list | |
566 | * with the new one in below. */ | |
567 | break; | |
568 | ||
569 | /* Metrics and distances are both same. Keep "rinfo" null and | |
570 | * the new route is added in the ECMP list in below. */ | |
571 | } | |
572 | } | |
718e3744 | 573 | |
574 | if (rinfo) | |
575 | { | |
718e3744 | 576 | /* Local static route. */ |
577 | if (rinfo->type == ZEBRA_ROUTE_RIP | |
a87552cd | 578 | && ((rinfo->sub_type == RIP_ROUTE_STATIC) || |
579 | (rinfo->sub_type == RIP_ROUTE_DEFAULT)) | |
580 | && rinfo->metric != RIP_METRIC_INFINITY) | |
fbf5d033 | 581 | { |
582 | route_unlock_node (rp); | |
583 | return; | |
584 | } | |
585 | ||
586 | /* Redistributed route check. */ | |
587 | if (rinfo->type != ZEBRA_ROUTE_RIP | |
588 | && rinfo->metric != RIP_METRIC_INFINITY) | |
589 | { | |
fbf5d033 | 590 | old_dist = rinfo->distance; |
b68da446 DL |
591 | /* Only routes directly connected to an interface (nexthop == 0) |
592 | * may have a valid NULL distance */ | |
593 | if (rinfo->nexthop.s_addr != 0) | |
7a383339 | 594 | old_dist = old_dist ? old_dist : ZEBRA_RIP_DISTANCE_DEFAULT; |
fbf5d033 | 595 | /* If imported route does not have STRICT precedence, |
596 | mark it as a ghost */ | |
bce8e868 LF |
597 | if (new_dist <= old_dist && rte->metric != RIP_METRIC_INFINITY) |
598 | rip_ecmp_replace (&newinfo); | |
599 | ||
600 | route_unlock_node (rp); | |
601 | return; | |
fbf5d033 | 602 | } |
718e3744 | 603 | } |
a87552cd | 604 | |
605 | if (!rinfo) | |
718e3744 | 606 | { |
bce8e868 LF |
607 | if (rp->info) |
608 | route_unlock_node (rp); | |
609 | ||
718e3744 | 610 | /* Now, check to see whether there is already an explicit route |
a87552cd | 611 | for the destination prefix. If there is no such route, add |
612 | this route to the routing table, unless the metric is | |
613 | infinity (there is no point in adding a route which | |
614 | unusable). */ | |
718e3744 | 615 | if (rte->metric != RIP_METRIC_INFINITY) |
bce8e868 | 616 | rip_ecmp_add (&newinfo); |
718e3744 | 617 | } |
618 | else | |
619 | { | |
620 | /* Route is there but we are not sure the route is RIP or not. */ | |
a87552cd | 621 | |
718e3744 | 622 | /* If there is an existing route, compare the next hop address |
a87552cd | 623 | to the address of the router from which the datagram came. |
624 | If this datagram is from the same router as the existing | |
625 | route, reinitialize the timeout. */ | |
16705130 | 626 | same = (IPV4_ADDR_SAME (&rinfo->from, &from->sin_addr) |
a87552cd | 627 | && (rinfo->ifindex == ifp->ifindex)); |
718e3744 | 628 | |
bce8e868 LF |
629 | old_dist = rinfo->distance ? \ |
630 | rinfo->distance : ZEBRA_RIP_DISTANCE_DEFAULT; | |
b94f9dbd | 631 | |
718e3744 | 632 | /* Next, compare the metrics. If the datagram is from the same |
a87552cd | 633 | router as the existing route, and the new metric is different |
634 | than the old one; or, if the new metric is lower than the old | |
635 | one, or if the tag has been changed; or if there is a route | |
636 | with a lower administrave distance; or an update of the | |
637 | distance on the actual route; do the following actions: */ | |
638 | if ((same && rinfo->metric != rte->metric) | |
639 | || (rte->metric < rinfo->metric) | |
640 | || ((same) | |
641 | && (rinfo->metric == rte->metric) | |
bce8e868 LF |
642 | && (newinfo.tag != rinfo->tag)) |
643 | || (old_dist > new_dist) | |
644 | || ((old_dist != new_dist) && same)) | |
a87552cd | 645 | { |
bce8e868 | 646 | if (listcount (list) == 1) |
a87552cd | 647 | { |
bce8e868 LF |
648 | if (newinfo.metric != RIP_METRIC_INFINITY) |
649 | rip_ecmp_replace (&newinfo); | |
650 | else | |
651 | rip_ecmp_delete (rinfo); | |
a87552cd | 652 | } |
bce8e868 | 653 | else |
a87552cd | 654 | { |
bce8e868 LF |
655 | if (newinfo.metric < rinfo->metric) |
656 | rip_ecmp_replace (&newinfo); | |
657 | else if (newinfo.metric > rinfo->metric) | |
658 | rip_ecmp_delete (rinfo); | |
659 | else if (new_dist < old_dist) | |
660 | rip_ecmp_replace (&newinfo); | |
661 | else if (new_dist > old_dist) | |
662 | rip_ecmp_delete (rinfo); | |
663 | else | |
664 | { | |
665 | int update = CHECK_FLAG (rinfo->flags, RIP_RTF_FIB) ? 1 : 0; | |
a87552cd | 666 | |
bce8e868 | 667 | assert (newinfo.metric != RIP_METRIC_INFINITY); |
a87552cd | 668 | |
a87552cd | 669 | RIP_TIMER_OFF (rinfo->t_timeout); |
bce8e868 LF |
670 | RIP_TIMER_OFF (rinfo->t_garbage_collect); |
671 | memcpy (rinfo, &newinfo, sizeof (struct rip_info)); | |
672 | rip_timeout_update (rinfo); | |
673 | ||
674 | if (update) | |
675 | rip_zebra_ipv4_add (rp); | |
a87552cd | 676 | |
bce8e868 LF |
677 | /* - Set the route change flag on the first entry. */ |
678 | rinfo = listgetdata (listhead (list)); | |
679 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
680 | rip_event (RIP_TRIGGERED_UPDATE, 0); | |
a87552cd | 681 | } |
682 | } | |
a87552cd | 683 | } |
bce8e868 LF |
684 | else /* same & no change */ |
685 | rip_timeout_update (rinfo); | |
686 | ||
718e3744 | 687 | /* Unlock tempolary lock of the route. */ |
688 | route_unlock_node (rp); | |
689 | } | |
690 | } | |
691 | ||
692 | /* Dump RIP packet */ | |
dc63bfd4 | 693 | static void |
8a676be3 | 694 | rip_packet_dump (struct rip_packet *packet, int size, const char *sndrcv) |
718e3744 | 695 | { |
696 | caddr_t lim; | |
697 | struct rte *rte; | |
8a676be3 | 698 | const char *command_str; |
718e3744 | 699 | char pbuf[BUFSIZ], nbuf[BUFSIZ]; |
700 | u_char netmask = 0; | |
701 | u_char *p; | |
702 | ||
703 | /* Set command string. */ | |
704 | if (packet->command > 0 && packet->command < RIP_COMMAND_MAX) | |
705 | command_str = lookup (rip_msg, packet->command); | |
706 | else | |
707 | command_str = "unknown"; | |
708 | ||
709 | /* Dump packet header. */ | |
5d6c3779 | 710 | zlog_debug ("%s %s version %d packet size %d", |
718e3744 | 711 | sndrcv, command_str, packet->version, size); |
712 | ||
713 | /* Dump each routing table entry. */ | |
714 | rte = packet->rte; | |
715 | ||
716 | for (lim = (caddr_t) packet + size; (caddr_t) rte < lim; rte++) | |
717 | { | |
718 | if (packet->version == RIPv2) | |
719 | { | |
720 | netmask = ip_masklen (rte->mask); | |
721 | ||
ca5e516c | 722 | if (rte->family == htons (RIP_FAMILY_AUTH)) |
718e3744 | 723 | { |
ca5e516c | 724 | if (rte->tag == htons (RIP_AUTH_SIMPLE_PASSWORD)) |
718e3744 | 725 | { |
726 | p = (u_char *)&rte->prefix; | |
727 | ||
5d6c3779 | 728 | zlog_debug (" family 0x%X type %d auth string: %s", |
718e3744 | 729 | ntohs (rte->family), ntohs (rte->tag), p); |
730 | } | |
ca5e516c | 731 | else if (rte->tag == htons (RIP_AUTH_MD5)) |
718e3744 | 732 | { |
733 | struct rip_md5_info *md5; | |
734 | ||
735 | md5 = (struct rip_md5_info *) &packet->rte; | |
736 | ||
5d6c3779 | 737 | zlog_debug (" family 0x%X type %d (MD5 authentication)", |
718e3744 | 738 | ntohs (md5->family), ntohs (md5->type)); |
5d6c3779 | 739 | zlog_debug (" RIP-2 packet len %d Key ID %d" |
ca5e516c | 740 | " Auth Data len %d", |
741 | ntohs (md5->packet_len), md5->keyid, | |
742 | md5->auth_len); | |
5d6c3779 | 743 | zlog_debug (" Sequence Number %ld", |
ca5e516c | 744 | (u_long) ntohl (md5->sequence)); |
718e3744 | 745 | } |
ca5e516c | 746 | else if (rte->tag == htons (RIP_AUTH_DATA)) |
718e3744 | 747 | { |
748 | p = (u_char *)&rte->prefix; | |
749 | ||
5d6c3779 | 750 | zlog_debug (" family 0x%X type %d (MD5 data)", |
718e3744 | 751 | ntohs (rte->family), ntohs (rte->tag)); |
5d6c3779 | 752 | zlog_debug (" MD5: %02X%02X%02X%02X%02X%02X%02X%02X" |
58093a79 | 753 | "%02X%02X%02X%02X%02X%02X%02X%02X", |
ca5e516c | 754 | p[0], p[1], p[2], p[3], p[4], p[5], p[6], |
58093a79 | 755 | p[7], p[8], p[9], p[10], p[11], p[12], p[13], |
ca5e516c | 756 | p[14], p[15]); |
718e3744 | 757 | } |
758 | else | |
759 | { | |
5d6c3779 | 760 | zlog_debug (" family 0x%X type %d (Unknown auth type)", |
718e3744 | 761 | ntohs (rte->family), ntohs (rte->tag)); |
762 | } | |
763 | } | |
764 | else | |
dc9ffce8 | 765 | zlog_debug (" %s/%d -> %s family %d tag %"ROUTE_TAG_PRI" metric %ld", |
ca5e516c | 766 | inet_ntop (AF_INET, &rte->prefix, pbuf, BUFSIZ), |
767 | netmask, inet_ntop (AF_INET, &rte->nexthop, nbuf, | |
768 | BUFSIZ), ntohs (rte->family), | |
dc9ffce8 CF |
769 | (route_tag_t)ntohs (rte->tag), |
770 | (u_long) ntohl (rte->metric)); | |
718e3744 | 771 | } |
772 | else | |
773 | { | |
dc9ffce8 | 774 | zlog_debug (" %s family %d tag %"ROUTE_TAG_PRI" metric %ld", |
718e3744 | 775 | inet_ntop (AF_INET, &rte->prefix, pbuf, BUFSIZ), |
dc9ffce8 | 776 | ntohs (rte->family), (route_tag_t)ntohs (rte->tag), |
718e3744 | 777 | (u_long)ntohl (rte->metric)); |
778 | } | |
779 | } | |
780 | } | |
781 | ||
782 | /* Check if the destination address is valid (unicast; not net 0 | |
783 | or 127) (RFC2453 Section 3.9.2 - Page 26). But we don't | |
784 | check net 0 because we accept default route. */ | |
dc63bfd4 | 785 | static int |
718e3744 | 786 | rip_destination_check (struct in_addr addr) |
787 | { | |
788 | u_int32_t destination; | |
789 | ||
790 | /* Convert to host byte order. */ | |
791 | destination = ntohl (addr.s_addr); | |
792 | ||
793 | if (IPV4_NET127 (destination)) | |
794 | return 0; | |
795 | ||
796 | /* Net 0 may match to the default route. */ | |
797 | if (IPV4_NET0 (destination) && destination != 0) | |
798 | return 0; | |
799 | ||
800 | /* Unicast address must belong to class A, B, C. */ | |
801 | if (IN_CLASSA (destination)) | |
802 | return 1; | |
803 | if (IN_CLASSB (destination)) | |
804 | return 1; | |
805 | if (IN_CLASSC (destination)) | |
806 | return 1; | |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
811 | /* RIP version 2 authentication. */ | |
dc63bfd4 | 812 | static int |
718e3744 | 813 | rip_auth_simple_password (struct rte *rte, struct sockaddr_in *from, |
814 | struct interface *ifp) | |
815 | { | |
816 | struct rip_interface *ri; | |
1cfaf93c RW |
817 | char *auth_str = (char *) &rte->prefix; |
818 | int i; | |
819 | ||
820 | /* reject passwords with zeros in the middle of the string */ | |
821 | for (i = strlen (auth_str); i < 16; i++) | |
822 | { | |
823 | if (auth_str[i] != '\0') | |
824 | return 0; | |
825 | } | |
718e3744 | 826 | |
827 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 828 | zlog_debug ("RIPv2 simple password authentication from %s", |
718e3744 | 829 | inet_ntoa (from->sin_addr)); |
830 | ||
831 | ri = ifp->info; | |
832 | ||
833 | if (ri->auth_type != RIP_AUTH_SIMPLE_PASSWORD | |
ca5e516c | 834 | || rte->tag != htons(RIP_AUTH_SIMPLE_PASSWORD)) |
718e3744 | 835 | return 0; |
836 | ||
837 | /* Simple password authentication. */ | |
838 | if (ri->auth_str) | |
839 | { | |
718e3744 | 840 | if (strncmp (auth_str, ri->auth_str, 16) == 0) |
841 | return 1; | |
842 | } | |
843 | if (ri->key_chain) | |
844 | { | |
845 | struct keychain *keychain; | |
846 | struct key *key; | |
847 | ||
848 | keychain = keychain_lookup (ri->key_chain); | |
849 | if (keychain == NULL) | |
850 | return 0; | |
851 | ||
1cfaf93c | 852 | key = key_match_for_accept (keychain, auth_str); |
718e3744 | 853 | if (key) |
854 | return 1; | |
855 | } | |
856 | return 0; | |
857 | } | |
858 | ||
859 | /* RIP version 2 authentication with MD5. */ | |
dc63bfd4 | 860 | static int |
718e3744 | 861 | rip_auth_md5 (struct rip_packet *packet, struct sockaddr_in *from, |
ca5e516c | 862 | int length, struct interface *ifp) |
718e3744 | 863 | { |
864 | struct rip_interface *ri; | |
865 | struct rip_md5_info *md5; | |
866 | struct rip_md5_data *md5data; | |
867 | struct keychain *keychain; | |
868 | struct key *key; | |
c1a03d47 | 869 | MD5_CTX ctx; |
718e3744 | 870 | u_char digest[RIP_AUTH_MD5_SIZE]; |
871 | u_int16_t packet_len; | |
98fd1e61 | 872 | char auth_str[RIP_AUTH_MD5_SIZE]; |
718e3744 | 873 | |
874 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 875 | zlog_debug ("RIPv2 MD5 authentication from %s", |
ca5e516c | 876 | inet_ntoa (from->sin_addr)); |
718e3744 | 877 | |
878 | ri = ifp->info; | |
879 | md5 = (struct rip_md5_info *) &packet->rte; | |
880 | ||
881 | /* Check auth type. */ | |
ca5e516c | 882 | if (ri->auth_type != RIP_AUTH_MD5 || md5->type != htons(RIP_AUTH_MD5)) |
718e3744 | 883 | return 0; |
884 | ||
ca5e516c | 885 | /* If the authentication length is less than 16, then it must be wrong for |
886 | * any interpretation of rfc2082. Some implementations also interpret | |
887 | * this as RIP_HEADER_SIZE+ RIP_AUTH_MD5_SIZE, aka RIP_AUTH_MD5_COMPAT_SIZE. | |
98fd1e61 | 888 | */ |
ca5e516c | 889 | if ( !((md5->auth_len == RIP_AUTH_MD5_SIZE) |
890 | || (md5->auth_len == RIP_AUTH_MD5_COMPAT_SIZE))) | |
c2bfbcc3 | 891 | { |
892 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 893 | zlog_debug ("RIPv2 MD5 authentication, strange authentication " |
ca5e516c | 894 | "length field %d", md5->auth_len); |
718e3744 | 895 | return 0; |
c2bfbcc3 | 896 | } |
718e3744 | 897 | |
ca5e516c | 898 | /* grab and verify check packet length */ |
899 | packet_len = ntohs (md5->packet_len); | |
900 | ||
901 | if (packet_len > (length - RIP_HEADER_SIZE - RIP_AUTH_MD5_SIZE)) | |
902 | { | |
903 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 904 | zlog_debug ("RIPv2 MD5 authentication, packet length field %d " |
ca5e516c | 905 | "greater than received length %d!", |
906 | md5->packet_len, length); | |
907 | return 0; | |
908 | } | |
909 | ||
910 | /* retrieve authentication data */ | |
911 | md5data = (struct rip_md5_data *) (((u_char *) packet) + packet_len); | |
98fd1e61 | 912 | |
913 | memset (auth_str, 0, RIP_AUTH_MD5_SIZE); | |
ca5e516c | 914 | |
718e3744 | 915 | if (ri->key_chain) |
916 | { | |
917 | keychain = keychain_lookup (ri->key_chain); | |
918 | if (keychain == NULL) | |
919 | return 0; | |
920 | ||
921 | key = key_lookup_for_accept (keychain, md5->keyid); | |
922 | if (key == NULL) | |
923 | return 0; | |
924 | ||
98fd1e61 | 925 | strncpy (auth_str, key->string, RIP_AUTH_MD5_SIZE); |
718e3744 | 926 | } |
98fd1e61 | 927 | else if (ri->auth_str) |
928 | strncpy (auth_str, ri->auth_str, RIP_AUTH_MD5_SIZE); | |
718e3744 | 929 | |
fa93b162 | 930 | if (auth_str[0] == 0) |
718e3744 | 931 | return 0; |
98fd1e61 | 932 | |
718e3744 | 933 | /* MD5 digest authentication. */ |
c1a03d47 | 934 | memset (&ctx, 0, sizeof(ctx)); |
935 | MD5Init(&ctx); | |
98fd1e61 | 936 | MD5Update(&ctx, packet, packet_len + RIP_HEADER_SIZE); |
937 | MD5Update(&ctx, auth_str, RIP_AUTH_MD5_SIZE); | |
c1a03d47 | 938 | MD5Final(digest, &ctx); |
98fd1e61 | 939 | |
940 | if (memcmp (md5data->digest, digest, RIP_AUTH_MD5_SIZE) == 0) | |
718e3744 | 941 | return packet_len; |
942 | else | |
943 | return 0; | |
944 | } | |
945 | ||
b14ee00b | 946 | /* Pick correct auth string for sends, prepare auth_str buffer for use. |
947 | * (left justified and padded). | |
948 | * | |
949 | * presumes one of ri or key is valid, and that the auth strings they point | |
950 | * to are nul terminated. If neither are present, auth_str will be fully | |
951 | * zero padded. | |
952 | * | |
953 | */ | |
954 | static void | |
955 | rip_auth_prepare_str_send (struct rip_interface *ri, struct key *key, | |
956 | char *auth_str, int len) | |
718e3744 | 957 | { |
b14ee00b | 958 | assert (ri || key); |
718e3744 | 959 | |
b14ee00b | 960 | memset (auth_str, 0, len); |
961 | if (key && key->string) | |
962 | strncpy (auth_str, key->string, len); | |
963 | else if (ri->auth_str) | |
964 | strncpy (auth_str, ri->auth_str, len); | |
718e3744 | 965 | |
b14ee00b | 966 | return; |
967 | } | |
718e3744 | 968 | |
b14ee00b | 969 | /* Write RIPv2 simple password authentication information |
970 | * | |
971 | * auth_str is presumed to be 2 bytes and correctly prepared | |
972 | * (left justified and zero padded). | |
973 | */ | |
974 | static void | |
975 | rip_auth_simple_write (struct stream *s, char *auth_str, int len) | |
976 | { | |
977 | assert (s && len == RIP_AUTH_SIMPLE_SIZE); | |
978 | ||
979 | stream_putw (s, RIP_FAMILY_AUTH); | |
980 | stream_putw (s, RIP_AUTH_SIMPLE_PASSWORD); | |
981 | stream_put (s, auth_str, RIP_AUTH_SIMPLE_SIZE); | |
982 | ||
983 | return; | |
984 | } | |
718e3744 | 985 | |
b14ee00b | 986 | /* write RIPv2 MD5 "authentication header" |
987 | * (uses the auth key data field) | |
988 | * | |
989 | * Digest offset field is set to 0. | |
990 | * | |
991 | * returns: offset of the digest offset field, which must be set when | |
992 | * length to the auth-data MD5 digest is known. | |
993 | */ | |
994 | static size_t | |
995 | rip_auth_md5_ah_write (struct stream *s, struct rip_interface *ri, | |
996 | struct key *key) | |
997 | { | |
98fd1e61 | 998 | size_t doff = 0; |
718e3744 | 999 | |
b14ee00b | 1000 | assert (s && ri && ri->auth_type == RIP_AUTH_MD5); |
718e3744 | 1001 | |
1002 | /* MD5 authentication. */ | |
ca5e516c | 1003 | stream_putw (s, RIP_FAMILY_AUTH); |
718e3744 | 1004 | stream_putw (s, RIP_AUTH_MD5); |
1005 | ||
b14ee00b | 1006 | /* MD5 AH digest offset field. |
1007 | * | |
1008 | * Set to placeholder value here, to true value when RIP-2 Packet length | |
1009 | * is known. Actual value is set in .....(). | |
1010 | */ | |
98fd1e61 | 1011 | doff = stream_get_endp(s); |
b14ee00b | 1012 | stream_putw (s, 0); |
718e3744 | 1013 | |
1014 | /* Key ID. */ | |
1015 | if (key) | |
1016 | stream_putc (s, key->index % 256); | |
1017 | else | |
1018 | stream_putc (s, 1); | |
1019 | ||
ca5e516c | 1020 | /* Auth Data Len. Set 16 for MD5 authentication data. Older ripds |
1021 | * however expect RIP_HEADER_SIZE + RIP_AUTH_MD5_SIZE so we allow for this | |
1022 | * to be configurable. | |
1023 | */ | |
1024 | stream_putc (s, ri->md5_auth_len); | |
718e3744 | 1025 | |
1026 | /* Sequence Number (non-decreasing). */ | |
1027 | /* RFC2080: The value used in the sequence number is | |
1028 | arbitrary, but two suggestions are the time of the | |
1029 | message's creation or a simple message counter. */ | |
1030 | stream_putl (s, time (NULL)); | |
1031 | ||
1032 | /* Reserved field must be zero. */ | |
1033 | stream_putl (s, 0); | |
1034 | stream_putl (s, 0); | |
1035 | ||
98fd1e61 | 1036 | return doff; |
b14ee00b | 1037 | } |
1038 | ||
1039 | /* If authentication is in used, write the appropriate header | |
1040 | * returns stream offset to which length must later be written | |
1041 | * or 0 if this is not required | |
1042 | */ | |
1043 | static size_t | |
1044 | rip_auth_header_write (struct stream *s, struct rip_interface *ri, | |
1045 | struct key *key, char *auth_str, int len) | |
1046 | { | |
1047 | assert (ri->auth_type != RIP_NO_AUTH); | |
1048 | ||
1049 | switch (ri->auth_type) | |
1050 | { | |
1051 | case RIP_AUTH_SIMPLE_PASSWORD: | |
1052 | rip_auth_prepare_str_send (ri, key, auth_str, len); | |
1053 | rip_auth_simple_write (s, auth_str, len); | |
1054 | return 0; | |
1055 | case RIP_AUTH_MD5: | |
1056 | return rip_auth_md5_ah_write (s, ri, key); | |
1057 | } | |
1058 | assert (1); | |
98fd1e61 | 1059 | return 0; |
b14ee00b | 1060 | } |
1061 | ||
1062 | /* Write RIPv2 MD5 authentication data trailer */ | |
1063 | static void | |
1064 | rip_auth_md5_set (struct stream *s, struct rip_interface *ri, size_t doff, | |
1065 | char *auth_str, int authlen) | |
1066 | { | |
1067 | unsigned long len; | |
c1a03d47 | 1068 | MD5_CTX ctx; |
b14ee00b | 1069 | unsigned char digest[RIP_AUTH_MD5_SIZE]; |
718e3744 | 1070 | |
b14ee00b | 1071 | /* Make it sure this interface is configured as MD5 |
1072 | authentication. */ | |
1073 | assert ((ri->auth_type == RIP_AUTH_MD5) && (authlen == RIP_AUTH_MD5_SIZE)); | |
1074 | assert (doff > 0); | |
1075 | ||
1076 | /* Get packet length. */ | |
1077 | len = stream_get_endp(s); | |
1078 | ||
1079 | /* Check packet length. */ | |
1080 | if (len < (RIP_HEADER_SIZE + RIP_RTE_SIZE)) | |
1081 | { | |
1082 | zlog_err ("rip_auth_md5_set(): packet length %ld is less than minimum length.", len); | |
1083 | return; | |
1084 | } | |
1085 | ||
1086 | /* Set the digest offset length in the header */ | |
1087 | stream_putw_at (s, doff, len); | |
1088 | ||
718e3744 | 1089 | /* Set authentication data. */ |
ca5e516c | 1090 | stream_putw (s, RIP_FAMILY_AUTH); |
1091 | stream_putw (s, RIP_AUTH_DATA); | |
718e3744 | 1092 | |
1093 | /* Generate a digest for the RIP packet. */ | |
c1a03d47 | 1094 | memset(&ctx, 0, sizeof(ctx)); |
1095 | MD5Init(&ctx); | |
98fd1e61 | 1096 | MD5Update(&ctx, STREAM_DATA (s), stream_get_endp (s)); |
c1a03d47 | 1097 | MD5Update(&ctx, auth_str, RIP_AUTH_MD5_SIZE); |
1098 | MD5Final(digest, &ctx); | |
718e3744 | 1099 | |
1100 | /* Copy the digest to the packet. */ | |
1101 | stream_write (s, digest, RIP_AUTH_MD5_SIZE); | |
1102 | } | |
1103 | ||
1104 | /* RIP routing information. */ | |
dc63bfd4 | 1105 | static void |
718e3744 | 1106 | rip_response_process (struct rip_packet *packet, int size, |
c49ad8f1 | 1107 | struct sockaddr_in *from, struct connected *ifc) |
718e3744 | 1108 | { |
1109 | caddr_t lim; | |
1110 | struct rte *rte; | |
727d104b | 1111 | struct prefix_ipv4 ifaddr; |
1112 | struct prefix_ipv4 ifaddrclass; | |
727d104b | 1113 | int subnetted; |
4608cb43 DS |
1114 | |
1115 | memset(&ifaddr, 0, sizeof(ifaddr)); | |
727d104b | 1116 | /* We don't know yet. */ |
1117 | subnetted = -1; | |
1118 | ||
718e3744 | 1119 | /* The Response must be ignored if it is not from the RIP |
1120 | port. (RFC2453 - Sec. 3.9.2)*/ | |
ca5e516c | 1121 | if (from->sin_port != htons(RIP_PORT_DEFAULT)) |
718e3744 | 1122 | { |
1123 | zlog_info ("response doesn't come from RIP port: %d", | |
1124 | from->sin_port); | |
1125 | rip_peer_bad_packet (from); | |
1126 | return; | |
1127 | } | |
1128 | ||
1129 | /* The datagram's IPv4 source address should be checked to see | |
1130 | whether the datagram is from a valid neighbor; the source of the | |
35a60c2d | 1131 | datagram must be on a directly connected network (RFC2453 - Sec. 3.9.2) */ |
95af5f13 | 1132 | if (if_lookup_address((void *)&from->sin_addr, AF_INET, VRF_DEFAULT) == NULL) |
718e3744 | 1133 | { |
1134 | zlog_info ("This datagram doesn't came from a valid neighbor: %s", | |
1135 | inet_ntoa (from->sin_addr)); | |
1136 | rip_peer_bad_packet (from); | |
1137 | return; | |
1138 | } | |
1139 | ||
1140 | /* It is also worth checking to see whether the response is from one | |
1141 | of the router's own addresses. */ | |
1142 | ||
1143 | ; /* Alredy done in rip_read () */ | |
1144 | ||
1145 | /* Update RIP peer. */ | |
1146 | rip_peer_update (from, packet->version); | |
1147 | ||
1148 | /* Set RTE pointer. */ | |
1149 | rte = packet->rte; | |
1150 | ||
1151 | for (lim = (caddr_t) packet + size; (caddr_t) rte < lim; rte++) | |
1152 | { | |
1153 | /* RIPv2 authentication check. */ | |
1154 | /* If the Address Family Identifier of the first (and only the | |
1155 | first) entry in the message is 0xFFFF, then the remainder of | |
1156 | the entry contains the authentication. */ | |
1157 | /* If the packet gets here it means authentication enabled */ | |
1158 | /* Check is done in rip_read(). So, just skipping it */ | |
1159 | if (packet->version == RIPv2 && | |
1160 | rte == packet->rte && | |
ca5e516c | 1161 | rte->family == htons(RIP_FAMILY_AUTH)) |
718e3744 | 1162 | continue; |
1163 | ||
ca5e516c | 1164 | if (rte->family != htons(AF_INET)) |
718e3744 | 1165 | { |
1166 | /* Address family check. RIP only supports AF_INET. */ | |
1167 | zlog_info ("Unsupported family %d from %s.", | |
1168 | ntohs (rte->family), inet_ntoa (from->sin_addr)); | |
1169 | continue; | |
1170 | } | |
1171 | ||
1172 | /* - is the destination address valid (e.g., unicast; not net 0 | |
1173 | or 127) */ | |
1174 | if (! rip_destination_check (rte->prefix)) | |
1175 | { | |
1176 | zlog_info ("Network is net 0 or net 127 or it is not unicast network"); | |
1177 | rip_peer_bad_route (from); | |
1178 | continue; | |
1179 | } | |
1180 | ||
1181 | /* Convert metric value to host byte order. */ | |
1182 | rte->metric = ntohl (rte->metric); | |
1183 | ||
1184 | /* - is the metric valid (i.e., between 1 and 16, inclusive) */ | |
1185 | if (! (rte->metric >= 1 && rte->metric <= 16)) | |
1186 | { | |
1187 | zlog_info ("Route's metric is not in the 1-16 range."); | |
1188 | rip_peer_bad_route (from); | |
1189 | continue; | |
1190 | } | |
1191 | ||
1192 | /* RIPv1 does not have nexthop value. */ | |
1193 | if (packet->version == RIPv1 && rte->nexthop.s_addr != 0) | |
1194 | { | |
1195 | zlog_info ("RIPv1 packet with nexthop value %s", | |
1196 | inet_ntoa (rte->nexthop)); | |
1197 | rip_peer_bad_route (from); | |
1198 | continue; | |
1199 | } | |
1200 | ||
1201 | /* That is, if the provided information is ignored, a possibly | |
1202 | sub-optimal, but absolutely valid, route may be taken. If | |
1203 | the received Next Hop is not directly reachable, it should be | |
1204 | treated as 0.0.0.0. */ | |
1205 | if (packet->version == RIPv2 && rte->nexthop.s_addr != 0) | |
1206 | { | |
1207 | u_int32_t addrval; | |
1208 | ||
1209 | /* Multicast address check. */ | |
1210 | addrval = ntohl (rte->nexthop.s_addr); | |
1211 | if (IN_CLASSD (addrval)) | |
1212 | { | |
1213 | zlog_info ("Nexthop %s is multicast address, skip this rte", | |
1214 | inet_ntoa (rte->nexthop)); | |
1215 | continue; | |
1216 | } | |
1217 | ||
95af5f13 | 1218 | if (! if_lookup_address ((void *)&rte->nexthop, AF_INET, VRF_DEFAULT)) |
718e3744 | 1219 | { |
1220 | struct route_node *rn; | |
1221 | struct rip_info *rinfo; | |
1222 | ||
1223 | rn = route_node_match_ipv4 (rip->table, &rte->nexthop); | |
1224 | ||
1225 | if (rn) | |
1226 | { | |
1227 | rinfo = rn->info; | |
1228 | ||
1229 | if (rinfo->type == ZEBRA_ROUTE_RIP | |
1230 | && rinfo->sub_type == RIP_ROUTE_RTE) | |
1231 | { | |
1232 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1233 | zlog_debug ("Next hop %s is on RIP network. Set nexthop to the packet's originator", inet_ntoa (rte->nexthop)); |
718e3744 | 1234 | rte->nexthop = rinfo->from; |
1235 | } | |
1236 | else | |
1237 | { | |
1238 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1239 | zlog_debug ("Next hop %s is not directly reachable. Treat it as 0.0.0.0", inet_ntoa (rte->nexthop)); |
718e3744 | 1240 | rte->nexthop.s_addr = 0; |
1241 | } | |
1242 | ||
1243 | route_unlock_node (rn); | |
1244 | } | |
1245 | else | |
1246 | { | |
1247 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1248 | zlog_debug ("Next hop %s is not directly reachable. Treat it as 0.0.0.0", inet_ntoa (rte->nexthop)); |
718e3744 | 1249 | rte->nexthop.s_addr = 0; |
1250 | } | |
1251 | ||
1252 | } | |
1253 | } | |
1254 | ||
1255 | /* For RIPv1, there won't be a valid netmask. | |
1256 | ||
1257 | This is a best guess at the masks. If everyone was using old | |
1258 | Ciscos before the 'ip subnet zero' option, it would be almost | |
1259 | right too :-) | |
1260 | ||
1261 | Cisco summarize ripv1 advertisments to the classful boundary | |
1262 | (/16 for class B's) except when the RIP packet does to inside | |
1263 | the classful network in question. */ | |
1264 | ||
1265 | if ((packet->version == RIPv1 && rte->prefix.s_addr != 0) | |
1266 | || (packet->version == RIPv2 | |
1267 | && (rte->prefix.s_addr != 0 && rte->mask.s_addr == 0))) | |
1268 | { | |
1269 | u_int32_t destination; | |
1270 | ||
727d104b | 1271 | if (subnetted == -1) |
c49ad8f1 | 1272 | { |
1273 | memcpy (&ifaddr, ifc->address, sizeof (struct prefix_ipv4)); | |
1274 | memcpy (&ifaddrclass, &ifaddr, sizeof (struct prefix_ipv4)); | |
1275 | apply_classful_mask_ipv4 (&ifaddrclass); | |
1276 | subnetted = 0; | |
1277 | if (ifaddr.prefixlen > ifaddrclass.prefixlen) | |
1278 | subnetted = 1; | |
1279 | } | |
727d104b | 1280 | |
1281 | destination = ntohl (rte->prefix.s_addr); | |
1282 | ||
1283 | if (IN_CLASSA (destination)) | |
1284 | masklen2ip (8, &rte->mask); | |
1285 | else if (IN_CLASSB (destination)) | |
1286 | masklen2ip (16, &rte->mask); | |
1287 | else if (IN_CLASSC (destination)) | |
718e3744 | 1288 | masklen2ip (24, &rte->mask); |
727d104b | 1289 | |
1290 | if (subnetted == 1) | |
1291 | masklen2ip (ifaddrclass.prefixlen, | |
1292 | (struct in_addr *) &destination); | |
1293 | if ((subnetted == 1) && ((rte->prefix.s_addr & destination) == | |
1294 | ifaddrclass.prefix.s_addr)) | |
1295 | { | |
1296 | masklen2ip (ifaddr.prefixlen, &rte->mask); | |
1297 | if ((rte->prefix.s_addr & rte->mask.s_addr) != rte->prefix.s_addr) | |
1298 | masklen2ip (32, &rte->mask); | |
1299 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1300 | zlog_debug ("Subnetted route %s", inet_ntoa (rte->prefix)); |
718e3744 | 1301 | } |
727d104b | 1302 | else |
718e3744 | 1303 | { |
727d104b | 1304 | if ((rte->prefix.s_addr & rte->mask.s_addr) != rte->prefix.s_addr) |
1305 | continue; | |
718e3744 | 1306 | } |
727d104b | 1307 | |
1308 | if (IS_RIP_DEBUG_EVENT) | |
718e3744 | 1309 | { |
5d6c3779 | 1310 | zlog_debug ("Resultant route %s", inet_ntoa (rte->prefix)); |
1311 | zlog_debug ("Resultant mask %s", inet_ntoa (rte->mask)); | |
718e3744 | 1312 | } |
1313 | } | |
1314 | ||
1315 | /* In case of RIPv2, if prefix in RTE is not netmask applied one | |
1316 | ignore the entry. */ | |
1317 | if ((packet->version == RIPv2) | |
1318 | && (rte->mask.s_addr != 0) | |
1319 | && ((rte->prefix.s_addr & rte->mask.s_addr) != rte->prefix.s_addr)) | |
1320 | { | |
1321 | zlog_warn ("RIPv2 address %s is not mask /%d applied one", | |
1322 | inet_ntoa (rte->prefix), ip_masklen (rte->mask)); | |
1323 | rip_peer_bad_route (from); | |
1324 | continue; | |
1325 | } | |
1326 | ||
1327 | /* Default route's netmask is ignored. */ | |
1328 | if (packet->version == RIPv2 | |
1329 | && (rte->prefix.s_addr == 0) | |
1330 | && (rte->mask.s_addr != 0)) | |
1331 | { | |
1332 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1333 | zlog_debug ("Default route with non-zero netmask. Set zero to netmask"); |
718e3744 | 1334 | rte->mask.s_addr = 0; |
1335 | } | |
1336 | ||
1337 | /* Routing table updates. */ | |
c49ad8f1 | 1338 | rip_rte_process (rte, from, ifc->ifp); |
718e3744 | 1339 | } |
1340 | } | |
1341 | ||
a4e987e0 | 1342 | /* Make socket for RIP protocol. */ |
f69bd9da | 1343 | static int |
ae735d2d | 1344 | rip_create_socket (void) |
a4e987e0 | 1345 | { |
1346 | int ret; | |
1347 | int sock; | |
1348 | struct sockaddr_in addr; | |
f69bd9da | 1349 | |
2c61ae37 | 1350 | memset (&addr, 0, sizeof (struct sockaddr_in)); |
ae735d2d RW |
1351 | addr.sin_family = AF_INET; |
1352 | addr.sin_addr.s_addr = INADDR_ANY; | |
6f0e3f6e | 1353 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
ae735d2d | 1354 | addr.sin_len = sizeof (struct sockaddr_in); |
6f0e3f6e | 1355 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
2c61ae37 | 1356 | /* sending port must always be the RIP port */ |
1357 | addr.sin_port = htons (RIP_PORT_DEFAULT); | |
1358 | ||
a4e987e0 | 1359 | /* Make datagram socket. */ |
8578874d | 1360 | sock = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
a4e987e0 | 1361 | if (sock < 0) |
1362 | { | |
1363 | zlog_err("Cannot create UDP socket: %s", safe_strerror(errno)); | |
1364 | exit (1); | |
1365 | } | |
1366 | ||
1367 | sockopt_broadcast (sock); | |
1368 | sockopt_reuseaddr (sock); | |
1369 | sockopt_reuseport (sock); | |
043144ea | 1370 | setsockopt_ipv4_multicast_loop (sock, 0); |
a4e987e0 | 1371 | #ifdef RIP_RECVMSG |
1372 | setsockopt_pktinfo (sock); | |
1373 | #endif /* RIP_RECVMSG */ | |
78b31d5c SH |
1374 | #ifdef IPTOS_PREC_INTERNETCONTROL |
1375 | setsockopt_ipv4_tos (sock, IPTOS_PREC_INTERNETCONTROL); | |
1376 | #endif | |
a4e987e0 | 1377 | |
1378 | if (ripd_privs.change (ZPRIVS_RAISE)) | |
1379 | zlog_err ("rip_create_socket: could not raise privs"); | |
f69bd9da | 1380 | setsockopt_so_recvbuf (sock, RIP_UDP_RCV_BUF); |
1381 | if ( (ret = bind (sock, (struct sockaddr *) & addr, sizeof (addr))) < 0) | |
1382 | ||
a4e987e0 | 1383 | { |
1384 | int save_errno = errno; | |
1385 | if (ripd_privs.change (ZPRIVS_LOWER)) | |
1386 | zlog_err ("rip_create_socket: could not lower privs"); | |
2c61ae37 | 1387 | |
1388 | zlog_err("%s: Can't bind socket %d to %s port %d: %s", __func__, | |
1389 | sock, inet_ntoa(addr.sin_addr), | |
1390 | (int) ntohs(addr.sin_port), | |
1391 | safe_strerror(save_errno)); | |
1392 | ||
f69bd9da | 1393 | close (sock); |
a4e987e0 | 1394 | return ret; |
1395 | } | |
f69bd9da | 1396 | |
a4e987e0 | 1397 | if (ripd_privs.change (ZPRIVS_LOWER)) |
1398 | zlog_err ("rip_create_socket: could not lower privs"); | |
1399 | ||
1400 | return sock; | |
1401 | } | |
1402 | ||
c49ad8f1 | 1403 | /* RIP packet send to destination address, on interface denoted by |
1404 | * by connected argument. NULL to argument denotes destination should be | |
1405 | * should be RIP multicast group | |
1406 | */ | |
dc63bfd4 | 1407 | static int |
c49ad8f1 | 1408 | rip_send_packet (u_char * buf, int size, struct sockaddr_in *to, |
1409 | struct connected *ifc) | |
718e3744 | 1410 | { |
ae735d2d | 1411 | int ret; |
718e3744 | 1412 | struct sockaddr_in sin; |
c49ad8f1 | 1413 | |
1414 | assert (ifc != NULL); | |
1415 | ||
931cd54d | 1416 | if (IS_RIP_DEBUG_PACKET) |
1417 | { | |
f69bd9da | 1418 | #define ADDRESS_SIZE 20 |
1419 | char dst[ADDRESS_SIZE]; | |
1420 | dst[ADDRESS_SIZE - 1] = '\0'; | |
1421 | ||
931cd54d | 1422 | if (to) |
1423 | { | |
f69bd9da | 1424 | strncpy (dst, inet_ntoa(to->sin_addr), ADDRESS_SIZE - 1); |
931cd54d | 1425 | } |
1426 | else | |
1427 | { | |
1428 | sin.sin_addr.s_addr = htonl (INADDR_RIP_GROUP); | |
f69bd9da | 1429 | strncpy (dst, inet_ntoa(sin.sin_addr), ADDRESS_SIZE - 1); |
931cd54d | 1430 | } |
f69bd9da | 1431 | #undef ADDRESS_SIZE |
5d6c3779 | 1432 | zlog_debug("rip_send_packet %s > %s (%s)", |
c49ad8f1 | 1433 | inet_ntoa(ifc->address->u.prefix4), |
1434 | dst, ifc->ifp->name); | |
931cd54d | 1435 | } |
f69bd9da | 1436 | |
c49ad8f1 | 1437 | if ( CHECK_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY) ) |
931cd54d | 1438 | { |
1439 | /* | |
1440 | * ZEBRA_IFA_SECONDARY is set on linux when an interface is configured | |
1441 | * with multiple addresses on the same subnet: the first address | |
1442 | * on the subnet is configured "primary", and all subsequent addresses | |
1443 | * on that subnet are treated as "secondary" addresses. | |
1444 | * In order to avoid routing-table bloat on other rip listeners, | |
1445 | * we do not send out RIP packets with ZEBRA_IFA_SECONDARY source addrs. | |
1446 | * XXX Since Linux is the only system for which the ZEBRA_IFA_SECONDARY | |
1447 | * flag is set, we would end up sending a packet for a "secondary" | |
1448 | * source address on non-linux systems. | |
1449 | */ | |
1450 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 1451 | zlog_debug("duplicate dropped"); |
931cd54d | 1452 | return 0; |
1453 | } | |
1454 | ||
718e3744 | 1455 | /* Make destination address. */ |
1456 | memset (&sin, 0, sizeof (struct sockaddr_in)); | |
1457 | sin.sin_family = AF_INET; | |
6f0e3f6e | 1458 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
718e3744 | 1459 | sin.sin_len = sizeof (struct sockaddr_in); |
6f0e3f6e | 1460 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
718e3744 | 1461 | |
1462 | /* When destination is specified, use it's port and address. */ | |
1463 | if (to) | |
1464 | { | |
718e3744 | 1465 | sin.sin_port = to->sin_port; |
1466 | sin.sin_addr = to->sin_addr; | |
1467 | } | |
1468 | else | |
1469 | { | |
718e3744 | 1470 | sin.sin_port = htons (RIP_PORT_DEFAULT); |
1471 | sin.sin_addr.s_addr = htonl (INADDR_RIP_GROUP); | |
ae735d2d RW |
1472 | |
1473 | rip_interface_multicast_set (rip->sock, ifc); | |
718e3744 | 1474 | } |
1475 | ||
ae735d2d | 1476 | ret = sendto (rip->sock, buf, size, 0, (struct sockaddr *)&sin, |
718e3744 | 1477 | sizeof (struct sockaddr_in)); |
1478 | ||
1479 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1480 | zlog_debug ("SEND to %s.%d", inet_ntoa(sin.sin_addr), |
cc1131ab | 1481 | ntohs (sin.sin_port)); |
718e3744 | 1482 | |
1483 | if (ret < 0) | |
6099b3b5 | 1484 | zlog_warn ("can't send packet : %s", safe_strerror (errno)); |
718e3744 | 1485 | |
718e3744 | 1486 | return ret; |
1487 | } | |
1488 | ||
1489 | /* Add redistributed route to RIP table. */ | |
1490 | void | |
1491 | rip_redistribute_add (int type, int sub_type, struct prefix_ipv4 *p, | |
b892f1dd | 1492 | ifindex_t ifindex, struct in_addr *nexthop, |
9471675f CF |
1493 | unsigned int metric, unsigned char distance, |
1494 | route_tag_t tag) | |
718e3744 | 1495 | { |
1496 | int ret; | |
bce8e868 LF |
1497 | struct route_node *rp = NULL; |
1498 | struct rip_info *rinfo = NULL, newinfo; | |
1499 | struct list *list = NULL; | |
718e3744 | 1500 | |
1501 | /* Redistribute route */ | |
1502 | ret = rip_destination_check (p->prefix); | |
1503 | if (! ret) | |
1504 | return; | |
1505 | ||
1506 | rp = route_node_get (rip->table, (struct prefix *) p); | |
1507 | ||
bce8e868 LF |
1508 | memset (&newinfo, 0, sizeof (struct rip_info)); |
1509 | newinfo.type = type; | |
1510 | newinfo.sub_type = sub_type; | |
1511 | newinfo.ifindex = ifindex; | |
1512 | newinfo.metric = 1; | |
1513 | newinfo.external_metric = metric; | |
1514 | newinfo.distance = distance; | |
9471675f CF |
1515 | if (tag <= UINT16_MAX) /* RIP only supports 16 bit tags */ |
1516 | newinfo.tag = tag; | |
bce8e868 LF |
1517 | newinfo.rp = rp; |
1518 | if (nexthop) | |
1519 | newinfo.nexthop = *nexthop; | |
718e3744 | 1520 | |
bce8e868 | 1521 | if ((list = rp->info) != NULL && listcount (list) != 0) |
718e3744 | 1522 | { |
bce8e868 LF |
1523 | rinfo = listgetdata (listhead (list)); |
1524 | ||
718e3744 | 1525 | if (rinfo->type == ZEBRA_ROUTE_CONNECT |
1526 | && rinfo->sub_type == RIP_ROUTE_INTERFACE | |
1527 | && rinfo->metric != RIP_METRIC_INFINITY) | |
1528 | { | |
1529 | route_unlock_node (rp); | |
1530 | return; | |
1531 | } | |
1532 | ||
1533 | /* Manually configured RIP route check. */ | |
1534 | if (rinfo->type == ZEBRA_ROUTE_RIP | |
16705130 | 1535 | && ((rinfo->sub_type == RIP_ROUTE_STATIC) || |
1536 | (rinfo->sub_type == RIP_ROUTE_DEFAULT)) ) | |
718e3744 | 1537 | { |
16705130 | 1538 | if (type != ZEBRA_ROUTE_RIP || ((sub_type != RIP_ROUTE_STATIC) && |
1539 | (sub_type != RIP_ROUTE_DEFAULT))) | |
718e3744 | 1540 | { |
1541 | route_unlock_node (rp); | |
1542 | return; | |
1543 | } | |
1544 | } | |
1545 | ||
bce8e868 LF |
1546 | rinfo = rip_ecmp_replace (&newinfo); |
1547 | route_unlock_node (rp); | |
718e3744 | 1548 | } |
bce8e868 LF |
1549 | else |
1550 | rinfo = rip_ecmp_add (&newinfo); | |
718e3744 | 1551 | |
16705130 | 1552 | if (IS_RIP_DEBUG_EVENT) { |
1553 | if (!nexthop) | |
5d6c3779 | 1554 | zlog_debug ("Redistribute new prefix %s/%d on the interface %s", |
baaea325 DS |
1555 | inet_ntoa(p->prefix), p->prefixlen, |
1556 | ifindex2ifname(ifindex, VRF_DEFAULT)); | |
16705130 | 1557 | else |
5d6c3779 | 1558 | zlog_debug ("Redistribute new prefix %s/%d with nexthop %s on the interface %s", |
baaea325 DS |
1559 | inet_ntoa(p->prefix), p->prefixlen, inet_ntoa(rinfo->nexthop), |
1560 | ifindex2ifname(ifindex, VRF_DEFAULT)); | |
16705130 | 1561 | } |
1562 | ||
718e3744 | 1563 | rip_event (RIP_TRIGGERED_UPDATE, 0); |
1564 | } | |
1565 | ||
1566 | /* Delete redistributed route from RIP table. */ | |
1567 | void | |
1568 | rip_redistribute_delete (int type, int sub_type, struct prefix_ipv4 *p, | |
b892f1dd | 1569 | ifindex_t ifindex) |
718e3744 | 1570 | { |
1571 | int ret; | |
1572 | struct route_node *rp; | |
1573 | struct rip_info *rinfo; | |
1574 | ||
1575 | ret = rip_destination_check (p->prefix); | |
1576 | if (! ret) | |
1577 | return; | |
1578 | ||
1579 | rp = route_node_lookup (rip->table, (struct prefix *) p); | |
1580 | if (rp) | |
1581 | { | |
bce8e868 | 1582 | struct list *list = rp->info; |
718e3744 | 1583 | |
bce8e868 LF |
1584 | if (list != NULL && listcount (list) != 0) |
1585 | { | |
1586 | rinfo = listgetdata (listhead (list)); | |
1587 | if (rinfo != NULL | |
1588 | && rinfo->type == type | |
1589 | && rinfo->sub_type == sub_type | |
1590 | && rinfo->ifindex == ifindex) | |
1591 | { | |
1592 | /* Perform poisoned reverse. */ | |
1593 | rinfo->metric = RIP_METRIC_INFINITY; | |
1594 | RIP_TIMER_ON (rinfo->t_garbage_collect, | |
1595 | rip_garbage_collect, rip->garbage_time); | |
1596 | RIP_TIMER_OFF (rinfo->t_timeout); | |
1597 | rinfo->flags |= RIP_RTF_CHANGED; | |
718e3744 | 1598 | |
bce8e868 LF |
1599 | if (IS_RIP_DEBUG_EVENT) |
1600 | zlog_debug ("Poisone %s/%d on the interface %s with an " | |
1601 | "infinity metric [delete]", | |
1602 | inet_ntoa(p->prefix), p->prefixlen, | |
baaea325 | 1603 | ifindex2ifname(ifindex, VRF_DEFAULT)); |
16705130 | 1604 | |
bce8e868 LF |
1605 | rip_event (RIP_TRIGGERED_UPDATE, 0); |
1606 | } | |
1607 | } | |
1608 | route_unlock_node (rp); | |
718e3744 | 1609 | } |
1610 | } | |
1611 | ||
1612 | /* Response to request called from rip_read ().*/ | |
dc63bfd4 | 1613 | static void |
718e3744 | 1614 | rip_request_process (struct rip_packet *packet, int size, |
c49ad8f1 | 1615 | struct sockaddr_in *from, struct connected *ifc) |
718e3744 | 1616 | { |
1617 | caddr_t lim; | |
1618 | struct rte *rte; | |
1619 | struct prefix_ipv4 p; | |
1620 | struct route_node *rp; | |
1621 | struct rip_info *rinfo; | |
1622 | struct rip_interface *ri; | |
1623 | ||
16705130 | 1624 | /* Does not reponse to the requests on the loopback interfaces */ |
c49ad8f1 | 1625 | if (if_is_loopback (ifc->ifp)) |
16705130 | 1626 | return; |
1627 | ||
429a0f8c | 1628 | /* Check RIP process is enabled on this interface. */ |
c49ad8f1 | 1629 | ri = ifc->ifp->info; |
16705130 | 1630 | if (! ri->running) |
1631 | return; | |
718e3744 | 1632 | |
1633 | /* When passive interface is specified, suppress responses */ | |
1634 | if (ri->passive) | |
1635 | return; | |
c49ad8f1 | 1636 | |
718e3744 | 1637 | /* RIP peer update. */ |
1638 | rip_peer_update (from, packet->version); | |
1639 | ||
1640 | lim = ((caddr_t) packet) + size; | |
1641 | rte = packet->rte; | |
1642 | ||
1643 | /* The Request is processed entry by entry. If there are no | |
1644 | entries, no response is given. */ | |
1645 | if (lim == (caddr_t) rte) | |
1646 | return; | |
1647 | ||
1648 | /* There is one special case. If there is exactly one entry in the | |
1649 | request, and it has an address family identifier of zero and a | |
1650 | metric of infinity (i.e., 16), then this is a request to send the | |
1651 | entire routing table. */ | |
1652 | if (lim == ((caddr_t) (rte + 1)) && | |
1653 | ntohs (rte->family) == 0 && | |
1654 | ntohl (rte->metric) == RIP_METRIC_INFINITY) | |
1655 | { | |
1656 | /* All route with split horizon */ | |
c49ad8f1 | 1657 | rip_output_process (ifc, from, rip_all_route, packet->version); |
718e3744 | 1658 | } |
1659 | else | |
1660 | { | |
4e054866 RW |
1661 | if (ntohs (rte->family) != AF_INET) |
1662 | return; | |
1663 | ||
718e3744 | 1664 | /* Examine the list of RTEs in the Request one by one. For each |
1665 | entry, look up the destination in the router's routing | |
1666 | database and, if there is a route, put that route's metric in | |
1667 | the metric field of the RTE. If there is no explicit route | |
1668 | to the specified destination, put infinity in the metric | |
1669 | field. Once all the entries have been filled in, change the | |
1670 | command from Request to Response and send the datagram back | |
1671 | to the requestor. */ | |
1672 | p.family = AF_INET; | |
1673 | ||
1674 | for (; ((caddr_t) rte) < lim; rte++) | |
1675 | { | |
1676 | p.prefix = rte->prefix; | |
1677 | p.prefixlen = ip_masklen (rte->mask); | |
1678 | apply_mask_ipv4 (&p); | |
1679 | ||
1680 | rp = route_node_lookup (rip->table, (struct prefix *) &p); | |
1681 | if (rp) | |
1682 | { | |
bce8e868 | 1683 | rinfo = listgetdata (listhead ((struct list *)rp->info)); |
718e3744 | 1684 | rte->metric = htonl (rinfo->metric); |
1685 | route_unlock_node (rp); | |
1686 | } | |
1687 | else | |
1688 | rte->metric = htonl (RIP_METRIC_INFINITY); | |
1689 | } | |
1690 | packet->command = RIP_RESPONSE; | |
1691 | ||
c49ad8f1 | 1692 | rip_send_packet ((u_char *)packet, size, from, ifc); |
718e3744 | 1693 | } |
1694 | rip_global_queries++; | |
1695 | } | |
1696 | ||
1697 | #if RIP_RECVMSG | |
1698 | /* Set IPv6 packet info to the socket. */ | |
1699 | static int | |
1700 | setsockopt_pktinfo (int sock) | |
1701 | { | |
1702 | int ret; | |
1703 | int val = 1; | |
1704 | ||
1705 | ret = setsockopt(sock, IPPROTO_IP, IP_PKTINFO, &val, sizeof(val)); | |
1706 | if (ret < 0) | |
6099b3b5 | 1707 | zlog_warn ("Can't setsockopt IP_PKTINFO : %s", safe_strerror (errno)); |
718e3744 | 1708 | return ret; |
1709 | } | |
1710 | ||
1711 | /* Read RIP packet by recvmsg function. */ | |
1712 | int | |
1713 | rip_recvmsg (int sock, u_char *buf, int size, struct sockaddr_in *from, | |
b892f1dd | 1714 | ifindex_t *ifindex) |
718e3744 | 1715 | { |
1716 | int ret; | |
1717 | struct msghdr msg; | |
1718 | struct iovec iov; | |
1719 | struct cmsghdr *ptr; | |
1720 | char adata[1024]; | |
1721 | ||
1722 | msg.msg_name = (void *) from; | |
1723 | msg.msg_namelen = sizeof (struct sockaddr_in); | |
1724 | msg.msg_iov = &iov; | |
1725 | msg.msg_iovlen = 1; | |
1726 | msg.msg_control = (void *) adata; | |
1727 | msg.msg_controllen = sizeof adata; | |
1728 | iov.iov_base = buf; | |
1729 | iov.iov_len = size; | |
1730 | ||
1731 | ret = recvmsg (sock, &msg, 0); | |
1732 | if (ret < 0) | |
1733 | return ret; | |
1734 | ||
b99760ab | 1735 | for (ptr = ZCMSG_FIRSTHDR(&msg); ptr != NULL; ptr = CMSG_NXTHDR(&msg, ptr)) |
718e3744 | 1736 | if (ptr->cmsg_level == IPPROTO_IP && ptr->cmsg_type == IP_PKTINFO) |
1737 | { | |
1738 | struct in_pktinfo *pktinfo; | |
1739 | int i; | |
1740 | ||
1741 | pktinfo = (struct in_pktinfo *) CMSG_DATA (ptr); | |
1742 | i = pktinfo->ipi_ifindex; | |
1743 | } | |
1744 | return ret; | |
1745 | } | |
1746 | ||
1747 | /* RIP packet read function. */ | |
1748 | int | |
1749 | rip_read_new (struct thread *t) | |
1750 | { | |
1751 | int ret; | |
1752 | int sock; | |
1753 | char buf[RIP_PACKET_MAXSIZ]; | |
1754 | struct sockaddr_in from; | |
b892f1dd | 1755 | ifindex_t ifindex; |
718e3744 | 1756 | |
1757 | /* Fetch socket then register myself. */ | |
1758 | sock = THREAD_FD (t); | |
1759 | rip_event (RIP_READ, sock); | |
1760 | ||
1761 | /* Read RIP packet. */ | |
1762 | ret = rip_recvmsg (sock, buf, RIP_PACKET_MAXSIZ, &from, (int *)&ifindex); | |
1763 | if (ret < 0) | |
1764 | { | |
6099b3b5 | 1765 | zlog_warn ("Can't read RIP packet: %s", safe_strerror (errno)); |
718e3744 | 1766 | return ret; |
1767 | } | |
1768 | ||
1769 | return ret; | |
1770 | } | |
1771 | #endif /* RIP_RECVMSG */ | |
1772 | ||
1773 | /* First entry point of RIP packet. */ | |
dc63bfd4 | 1774 | static int |
718e3744 | 1775 | rip_read (struct thread *t) |
1776 | { | |
1777 | int sock; | |
1778 | int ret; | |
1779 | int rtenum; | |
1780 | union rip_buf rip_buf; | |
1781 | struct rip_packet *packet; | |
1782 | struct sockaddr_in from; | |
11dde9c2 | 1783 | int len; |
3e557ae1 | 1784 | int vrecv; |
11dde9c2 | 1785 | socklen_t fromlen; |
b10ce841 | 1786 | struct interface *ifp = NULL; |
c49ad8f1 | 1787 | struct connected *ifc; |
718e3744 | 1788 | struct rip_interface *ri; |
bd40c341 | 1789 | struct prefix p; |
718e3744 | 1790 | |
1791 | /* Fetch socket then register myself. */ | |
1792 | sock = THREAD_FD (t); | |
1793 | rip->t_read = NULL; | |
1794 | ||
1795 | /* Add myself to tne next event */ | |
1796 | rip_event (RIP_READ, sock); | |
1797 | ||
1798 | /* RIPd manages only IPv4. */ | |
1799 | memset (&from, 0, sizeof (struct sockaddr_in)); | |
1800 | fromlen = sizeof (struct sockaddr_in); | |
1801 | ||
1802 | len = recvfrom (sock, (char *)&rip_buf.buf, sizeof (rip_buf.buf), 0, | |
1803 | (struct sockaddr *) &from, &fromlen); | |
1804 | if (len < 0) | |
1805 | { | |
6099b3b5 | 1806 | zlog_info ("recvfrom failed: %s", safe_strerror (errno)); |
718e3744 | 1807 | return len; |
1808 | } | |
1809 | ||
1810 | /* Check is this packet comming from myself? */ | |
31a476c7 | 1811 | if (if_check_address (from.sin_addr)) |
718e3744 | 1812 | { |
1813 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 1814 | zlog_debug ("ignore packet comes from myself"); |
718e3744 | 1815 | return -1; |
1816 | } | |
1817 | ||
1818 | /* Which interface is this packet comes from. */ | |
95af5f13 | 1819 | ifc = if_lookup_address ((void *)&from.sin_addr, AF_INET, VRF_DEFAULT); |
b10ce841 RW |
1820 | if (ifc) |
1821 | ifp = ifc->ifp; | |
1822 | ||
718e3744 | 1823 | /* RIP packet received */ |
1824 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1825 | zlog_debug ("RECV packet from %s port %d on %s", |
718e3744 | 1826 | inet_ntoa (from.sin_addr), ntohs (from.sin_port), |
1827 | ifp ? ifp->name : "unknown"); | |
1828 | ||
1829 | /* If this packet come from unknown interface, ignore it. */ | |
1830 | if (ifp == NULL) | |
1831 | { | |
766a0ca3 | 1832 | zlog_info ("rip_read: cannot find interface for packet from %s port %d", |
1833 | inet_ntoa(from.sin_addr), ntohs (from.sin_port)); | |
c49ad8f1 | 1834 | return -1; |
1835 | } | |
bd40c341 DS |
1836 | |
1837 | p.family = AF_INET; | |
1838 | p.u.prefix4 = from.sin_addr; | |
1839 | p.prefixlen = IPV4_MAX_BITLEN; | |
1840 | ||
1841 | ifc = connected_lookup_prefix (ifp, &p); | |
c49ad8f1 | 1842 | |
1843 | if (ifc == NULL) | |
1844 | { | |
766a0ca3 | 1845 | zlog_info ("rip_read: cannot find connected address for packet from %s " |
1846 | "port %d on interface %s", | |
1847 | inet_ntoa(from.sin_addr), ntohs (from.sin_port), ifp->name); | |
718e3744 | 1848 | return -1; |
1849 | } | |
1850 | ||
1851 | /* Packet length check. */ | |
1852 | if (len < RIP_PACKET_MINSIZ) | |
1853 | { | |
1854 | zlog_warn ("packet size %d is smaller than minimum size %d", | |
1855 | len, RIP_PACKET_MINSIZ); | |
1856 | rip_peer_bad_packet (&from); | |
1857 | return len; | |
1858 | } | |
1859 | if (len > RIP_PACKET_MAXSIZ) | |
1860 | { | |
1861 | zlog_warn ("packet size %d is larger than max size %d", | |
1862 | len, RIP_PACKET_MAXSIZ); | |
1863 | rip_peer_bad_packet (&from); | |
1864 | return len; | |
1865 | } | |
1866 | ||
1867 | /* Packet alignment check. */ | |
1868 | if ((len - RIP_PACKET_MINSIZ) % 20) | |
1869 | { | |
1870 | zlog_warn ("packet size %d is wrong for RIP packet alignment", len); | |
1871 | rip_peer_bad_packet (&from); | |
1872 | return len; | |
1873 | } | |
1874 | ||
1875 | /* Set RTE number. */ | |
1876 | rtenum = ((len - RIP_PACKET_MINSIZ) / 20); | |
1877 | ||
1878 | /* For easy to handle. */ | |
1879 | packet = &rip_buf.rip_packet; | |
1880 | ||
1881 | /* RIP version check. */ | |
1882 | if (packet->version == 0) | |
1883 | { | |
1884 | zlog_info ("version 0 with command %d received.", packet->command); | |
1885 | rip_peer_bad_packet (&from); | |
1886 | return -1; | |
1887 | } | |
1888 | ||
1889 | /* Dump RIP packet. */ | |
1890 | if (IS_RIP_DEBUG_RECV) | |
1891 | rip_packet_dump (packet, len, "RECV"); | |
1892 | ||
1893 | /* RIP version adjust. This code should rethink now. RFC1058 says | |
1894 | that "Version 1 implementations are to ignore this extra data and | |
1895 | process only the fields specified in this document.". So RIPv3 | |
1896 | packet should be treated as RIPv1 ignoring must be zero field. */ | |
1897 | if (packet->version > RIPv2) | |
1898 | packet->version = RIPv2; | |
1899 | ||
1900 | /* Is RIP running or is this RIP neighbor ?*/ | |
1901 | ri = ifp->info; | |
1902 | if (! ri->running && ! rip_neighbor_lookup (&from)) | |
1903 | { | |
1904 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1905 | zlog_debug ("RIP is not enabled on interface %s.", ifp->name); |
718e3744 | 1906 | rip_peer_bad_packet (&from); |
1907 | return -1; | |
1908 | } | |
1909 | ||
15a2b089 | 1910 | /* RIP Version check. RFC2453, 4.6 and 5.1 */ |
3e557ae1 PJ |
1911 | vrecv = ((ri->ri_receive == RI_RIP_UNSPEC) ? |
1912 | rip->version_recv : ri->ri_receive); | |
6aec4b41 RW |
1913 | if (vrecv == RI_RIP_VERSION_NONE || |
1914 | ((packet->version == RIPv1) && !(vrecv & RIPv1)) || | |
1915 | ((packet->version == RIPv2) && !(vrecv & RIPv2))) | |
15a2b089 PJ |
1916 | { |
1917 | if (IS_RIP_DEBUG_PACKET) | |
1918 | zlog_debug (" packet's v%d doesn't fit to if version spec", | |
1919 | packet->version); | |
1920 | rip_peer_bad_packet (&from); | |
1921 | return -1; | |
1922 | } | |
1923 | ||
718e3744 | 1924 | /* RFC2453 5.2 If the router is not configured to authenticate RIP-2 |
1925 | messages, then RIP-1 and unauthenticated RIP-2 messages will be | |
1926 | accepted; authenticated RIP-2 messages shall be discarded. */ | |
718e3744 | 1927 | if ((ri->auth_type == RIP_NO_AUTH) |
1928 | && rtenum | |
ca5e516c | 1929 | && (packet->version == RIPv2) |
1930 | && (packet->rte->family == htons(RIP_FAMILY_AUTH))) | |
718e3744 | 1931 | { |
1932 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1933 | zlog_debug ("packet RIPv%d is dropped because authentication disabled", |
718e3744 | 1934 | packet->version); |
1935 | rip_peer_bad_packet (&from); | |
1936 | return -1; | |
1937 | } | |
15a2b089 PJ |
1938 | |
1939 | /* RFC: | |
1940 | If the router is configured to authenticate RIP-2 messages, then | |
718e3744 | 1941 | RIP-1 messages and RIP-2 messages which pass authentication |
1942 | testing shall be accepted; unauthenticated and failed | |
1943 | authentication RIP-2 messages shall be discarded. For maximum | |
1944 | security, RIP-1 messages should be ignored when authentication is | |
1945 | in use (see section 4.1); otherwise, the routing information from | |
1946 | authenticated messages will be propagated by RIP-1 routers in an | |
15a2b089 PJ |
1947 | unauthenticated manner. |
1948 | */ | |
1949 | /* We make an exception for RIPv1 REQUEST packets, to which we'll | |
1950 | * always reply regardless of authentication settings, because: | |
1951 | * | |
1952 | * - if there other authorised routers on-link, the REQUESTor can | |
1953 | * passively obtain the routing updates anyway | |
1954 | * - if there are no other authorised routers on-link, RIP can | |
1955 | * easily be disabled for the link to prevent giving out information | |
1956 | * on state of this routers RIP routing table.. | |
1957 | * | |
1958 | * I.e. if RIPv1 has any place anymore these days, it's as a very | |
1959 | * simple way to distribute routing information (e.g. to embedded | |
1960 | * hosts / appliances) and the ability to give out RIPv1 | |
1961 | * routing-information freely, while still requiring RIPv2 | |
1962 | * authentication for any RESPONSEs might be vaguely useful. | |
1963 | */ | |
1964 | if (ri->auth_type != RIP_NO_AUTH | |
1965 | && packet->version == RIPv1) | |
718e3744 | 1966 | { |
15a2b089 PJ |
1967 | /* Discard RIPv1 messages other than REQUESTs */ |
1968 | if (packet->command != RIP_REQUEST) | |
1969 | { | |
1970 | if (IS_RIP_DEBUG_PACKET) | |
1971 | zlog_debug ("RIPv1" " dropped because authentication enabled"); | |
1972 | rip_peer_bad_packet (&from); | |
1973 | return -1; | |
1974 | } | |
1975 | } | |
1976 | else if (ri->auth_type != RIP_NO_AUTH) | |
1977 | { | |
1978 | const char *auth_desc; | |
1979 | ||
1980 | if (rtenum == 0) | |
1981 | { | |
1982 | /* There definitely is no authentication in the packet. */ | |
1983 | if (IS_RIP_DEBUG_PACKET) | |
1984 | zlog_debug ("RIPv2 authentication failed: no auth RTE in packet"); | |
1985 | rip_peer_bad_packet (&from); | |
1986 | return -1; | |
1987 | } | |
1988 | ||
1989 | /* First RTE must be an Authentication Family RTE */ | |
1990 | if (packet->rte->family != htons(RIP_FAMILY_AUTH)) | |
1991 | { | |
1992 | if (IS_RIP_DEBUG_PACKET) | |
1993 | zlog_debug ("RIPv2" " dropped because authentication enabled"); | |
718e3744 | 1994 | rip_peer_bad_packet (&from); |
1995 | return -1; | |
15a2b089 PJ |
1996 | } |
1997 | ||
718e3744 | 1998 | /* Check RIPv2 authentication. */ |
15a2b089 PJ |
1999 | switch (ntohs(packet->rte->tag)) |
2000 | { | |
2001 | case RIP_AUTH_SIMPLE_PASSWORD: | |
2002 | auth_desc = "simple"; | |
2003 | ret = rip_auth_simple_password (packet->rte, &from, ifp); | |
2004 | break; | |
2005 | ||
2006 | case RIP_AUTH_MD5: | |
2007 | auth_desc = "MD5"; | |
2008 | ret = rip_auth_md5 (packet, &from, len, ifp); | |
2009 | /* Reset RIP packet length to trim MD5 data. */ | |
2010 | len = ret; | |
2011 | break; | |
2012 | ||
2013 | default: | |
2014 | ret = 0; | |
2015 | auth_desc = "unknown type"; | |
2016 | if (IS_RIP_DEBUG_PACKET) | |
2017 | zlog_debug ("RIPv2 Unknown authentication type %d", | |
2018 | ntohs (packet->rte->tag)); | |
2019 | } | |
2020 | ||
2021 | if (ret) | |
2022 | { | |
2023 | if (IS_RIP_DEBUG_PACKET) | |
2024 | zlog_debug ("RIPv2 %s authentication success", auth_desc); | |
2025 | } | |
2026 | else | |
2027 | { | |
2028 | if (IS_RIP_DEBUG_PACKET) | |
2029 | zlog_debug ("RIPv2 %s authentication failure", auth_desc); | |
2030 | rip_peer_bad_packet (&from); | |
2031 | return -1; | |
2032 | } | |
718e3744 | 2033 | } |
2034 | ||
2035 | /* Process each command. */ | |
2036 | switch (packet->command) | |
2037 | { | |
2038 | case RIP_RESPONSE: | |
c49ad8f1 | 2039 | rip_response_process (packet, len, &from, ifc); |
718e3744 | 2040 | break; |
2041 | case RIP_REQUEST: | |
2042 | case RIP_POLL: | |
c49ad8f1 | 2043 | rip_request_process (packet, len, &from, ifc); |
718e3744 | 2044 | break; |
2045 | case RIP_TRACEON: | |
2046 | case RIP_TRACEOFF: | |
2047 | zlog_info ("Obsolete command %s received, please sent it to routed", | |
2048 | lookup (rip_msg, packet->command)); | |
2049 | rip_peer_bad_packet (&from); | |
2050 | break; | |
2051 | case RIP_POLL_ENTRY: | |
2052 | zlog_info ("Obsolete command %s received", | |
2053 | lookup (rip_msg, packet->command)); | |
2054 | rip_peer_bad_packet (&from); | |
2055 | break; | |
2056 | default: | |
2057 | zlog_info ("Unknown RIP command %d received", packet->command); | |
2058 | rip_peer_bad_packet (&from); | |
2059 | break; | |
2060 | } | |
2061 | ||
2062 | return len; | |
2063 | } | |
2064 | ||
718e3744 | 2065 | /* Write routing table entry to the stream and return next index of |
2066 | the routing table entry in the stream. */ | |
dc63bfd4 | 2067 | static int |
718e3744 | 2068 | rip_write_rte (int num, struct stream *s, struct prefix_ipv4 *p, |
b14ee00b | 2069 | u_char version, struct rip_info *rinfo) |
718e3744 | 2070 | { |
2071 | struct in_addr mask; | |
718e3744 | 2072 | |
2073 | /* Write routing table entry. */ | |
2074 | if (version == RIPv1) | |
2075 | { | |
2076 | stream_putw (s, AF_INET); | |
2077 | stream_putw (s, 0); | |
2078 | stream_put_ipv4 (s, p->prefix.s_addr); | |
2079 | stream_put_ipv4 (s, 0); | |
2080 | stream_put_ipv4 (s, 0); | |
2081 | stream_putl (s, rinfo->metric_out); | |
2082 | } | |
2083 | else | |
2084 | { | |
2085 | masklen2ip (p->prefixlen, &mask); | |
2086 | ||
2087 | stream_putw (s, AF_INET); | |
16705130 | 2088 | stream_putw (s, rinfo->tag_out); |
718e3744 | 2089 | stream_put_ipv4 (s, p->prefix.s_addr); |
2090 | stream_put_ipv4 (s, mask.s_addr); | |
2091 | stream_put_ipv4 (s, rinfo->nexthop_out.s_addr); | |
2092 | stream_putl (s, rinfo->metric_out); | |
2093 | } | |
2094 | ||
2095 | return ++num; | |
2096 | } | |
2097 | ||
2098 | /* Send update to the ifp or spcified neighbor. */ | |
2099 | void | |
c49ad8f1 | 2100 | rip_output_process (struct connected *ifc, struct sockaddr_in *to, |
2101 | int route_type, u_char version) | |
718e3744 | 2102 | { |
2103 | int ret; | |
2104 | struct stream *s; | |
2105 | struct route_node *rp; | |
2106 | struct rip_info *rinfo; | |
2107 | struct rip_interface *ri; | |
2108 | struct prefix_ipv4 *p; | |
2109 | struct prefix_ipv4 classfull; | |
727d104b | 2110 | struct prefix_ipv4 ifaddrclass; |
b14ee00b | 2111 | struct key *key = NULL; |
2112 | /* this might need to made dynamic if RIP ever supported auth methods | |
2113 | with larger key string sizes */ | |
2114 | char auth_str[RIP_AUTH_SIMPLE_SIZE]; | |
dc63bfd4 | 2115 | size_t doff = 0; /* offset of digest offset field */ |
2c61ae37 | 2116 | int num = 0; |
718e3744 | 2117 | int rtemax; |
01d0908a | 2118 | int subnetted = 0; |
bce8e868 LF |
2119 | struct list *list = NULL; |
2120 | struct listnode *listnode = NULL; | |
718e3744 | 2121 | |
2122 | /* Logging output event. */ | |
2123 | if (IS_RIP_DEBUG_EVENT) | |
2124 | { | |
2125 | if (to) | |
5d6c3779 | 2126 | zlog_debug ("update routes to neighbor %s", inet_ntoa (to->sin_addr)); |
718e3744 | 2127 | else |
5d6c3779 | 2128 | zlog_debug ("update routes on interface %s ifindex %d", |
c49ad8f1 | 2129 | ifc->ifp->name, ifc->ifp->ifindex); |
718e3744 | 2130 | } |
2131 | ||
2132 | /* Set output stream. */ | |
2133 | s = rip->obuf; | |
2134 | ||
2135 | /* Reset stream and RTE counter. */ | |
2136 | stream_reset (s); | |
6a7cff75 | 2137 | rtemax = RIP_MAX_RTE; |
718e3744 | 2138 | |
2139 | /* Get RIP interface. */ | |
c49ad8f1 | 2140 | ri = ifc->ifp->info; |
718e3744 | 2141 | |
2142 | /* If output interface is in simple password authentication mode, we | |
2143 | need space for authentication data. */ | |
2144 | if (ri->auth_type == RIP_AUTH_SIMPLE_PASSWORD) | |
2145 | rtemax -= 1; | |
2146 | ||
2147 | /* If output interface is in MD5 authentication mode, we need space | |
2148 | for authentication header and data. */ | |
2149 | if (ri->auth_type == RIP_AUTH_MD5) | |
2150 | rtemax -= 2; | |
2151 | ||
2152 | /* If output interface is in simple password authentication mode | |
2153 | and string or keychain is specified we need space for auth. data */ | |
b14ee00b | 2154 | if (ri->auth_type != RIP_NO_AUTH) |
718e3744 | 2155 | { |
2156 | if (ri->key_chain) | |
2157 | { | |
2158 | struct keychain *keychain; | |
2159 | ||
2160 | keychain = keychain_lookup (ri->key_chain); | |
2161 | if (keychain) | |
b14ee00b | 2162 | key = key_lookup_for_send (keychain); |
718e3744 | 2163 | } |
b14ee00b | 2164 | /* to be passed to auth functions later */ |
2165 | rip_auth_prepare_str_send (ri, key, auth_str, RIP_AUTH_SIMPLE_SIZE); | |
718e3744 | 2166 | } |
2167 | ||
727d104b | 2168 | if (version == RIPv1) |
2169 | { | |
c49ad8f1 | 2170 | memcpy (&ifaddrclass, ifc->address, sizeof (struct prefix_ipv4)); |
727d104b | 2171 | apply_classful_mask_ipv4 (&ifaddrclass); |
2172 | subnetted = 0; | |
c49ad8f1 | 2173 | if (ifc->address->prefixlen > ifaddrclass.prefixlen) |
01d0908a | 2174 | subnetted = 1; |
727d104b | 2175 | } |
2176 | ||
718e3744 | 2177 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) |
bce8e868 | 2178 | if ((list = rp->info) != NULL && listcount (list) != 0) |
718e3744 | 2179 | { |
bce8e868 | 2180 | rinfo = listgetdata (listhead (list)); |
727d104b | 2181 | /* For RIPv1, if we are subnetted, output subnets in our network */ |
2182 | /* that have the same mask as the output "interface". For other */ | |
2183 | /* networks, only the classfull version is output. */ | |
718e3744 | 2184 | |
2185 | if (version == RIPv1) | |
2186 | { | |
727d104b | 2187 | p = (struct prefix_ipv4 *) &rp->p; |
718e3744 | 2188 | |
2189 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 2190 | zlog_debug("RIPv1 mask check, %s/%d considered for output", |
727d104b | 2191 | inet_ntoa (rp->p.u.prefix4), rp->p.prefixlen); |
718e3744 | 2192 | |
727d104b | 2193 | if (subnetted && |
2194 | prefix_match ((struct prefix *) &ifaddrclass, &rp->p)) | |
2195 | { | |
c49ad8f1 | 2196 | if ((ifc->address->prefixlen != rp->p.prefixlen) && |
727d104b | 2197 | (rp->p.prefixlen != 32)) |
2198 | continue; | |
2199 | } | |
2200 | else | |
2201 | { | |
2202 | memcpy (&classfull, &rp->p, sizeof(struct prefix_ipv4)); | |
2203 | apply_classful_mask_ipv4(&classfull); | |
2204 | if (rp->p.u.prefix4.s_addr != 0 && | |
2205 | classfull.prefixlen != rp->p.prefixlen) | |
2206 | continue; | |
2207 | } | |
718e3744 | 2208 | if (IS_RIP_DEBUG_PACKET) |
5d6c3779 | 2209 | zlog_debug("RIPv1 mask check, %s/%d made it through", |
727d104b | 2210 | inet_ntoa (rp->p.u.prefix4), rp->p.prefixlen); |
718e3744 | 2211 | } |
2212 | else | |
2213 | p = (struct prefix_ipv4 *) &rp->p; | |
2214 | ||
2215 | /* Apply output filters. */ | |
7c989d74 | 2216 | ret = rip_filter (RIP_FILTER_OUT, p, ri); |
718e3744 | 2217 | if (ret < 0) |
2218 | continue; | |
2219 | ||
2220 | /* Changed route only output. */ | |
2221 | if (route_type == rip_changed_route && | |
2222 | (! (rinfo->flags & RIP_RTF_CHANGED))) | |
2223 | continue; | |
2224 | ||
2225 | /* Split horizon. */ | |
2226 | /* if (split_horizon == rip_split_horizon) */ | |
16705130 | 2227 | if (ri->split_horizon == RIP_SPLIT_HORIZON) |
718e3744 | 2228 | { |
42d14d98 | 2229 | /* |
2230 | * We perform split horizon for RIP and connected route. | |
2231 | * For rip routes, we want to suppress the route if we would | |
2232 | * end up sending the route back on the interface that we | |
2233 | * learned it from, with a higher metric. For connected routes, | |
2234 | * we suppress the route if the prefix is a subset of the | |
2235 | * source address that we are going to use for the packet | |
2236 | * (in order to handle the case when multiple subnets are | |
2237 | * configured on the same interface). | |
2238 | */ | |
bce8e868 LF |
2239 | int suppress = 0; |
2240 | struct rip_info *tmp_rinfo = NULL; | |
2241 | ||
2242 | for (ALL_LIST_ELEMENTS_RO (list, listnode, tmp_rinfo)) | |
2243 | if (tmp_rinfo->type == ZEBRA_ROUTE_RIP && | |
2244 | tmp_rinfo->ifindex == ifc->ifp->ifindex) | |
2245 | { | |
2246 | suppress = 1; | |
2247 | break; | |
2248 | } | |
2249 | ||
2250 | if (!suppress && rinfo->type == ZEBRA_ROUTE_CONNECT && | |
c49ad8f1 | 2251 | prefix_match((struct prefix *)p, ifc->address)) |
bce8e868 LF |
2252 | suppress = 1; |
2253 | ||
2254 | if (suppress) | |
718e3744 | 2255 | continue; |
2256 | } | |
2257 | ||
2258 | /* Preparation for route-map. */ | |
2259 | rinfo->metric_set = 0; | |
2260 | rinfo->nexthop_out.s_addr = 0; | |
2261 | rinfo->metric_out = rinfo->metric; | |
16705130 | 2262 | rinfo->tag_out = rinfo->tag; |
c49ad8f1 | 2263 | rinfo->ifindex_out = ifc->ifp->ifindex; |
718e3744 | 2264 | |
16705130 | 2265 | /* In order to avoid some local loops, |
2266 | * if the RIP route has a nexthop via this interface, keep the nexthop, | |
2267 | * otherwise set it to 0. The nexthop should not be propagated | |
2268 | * beyond the local broadcast/multicast area in order | |
2269 | * to avoid an IGP multi-level recursive look-up. | |
2270 | * see (4.4) | |
2271 | */ | |
c49ad8f1 | 2272 | if (rinfo->ifindex == ifc->ifp->ifindex) |
718e3744 | 2273 | rinfo->nexthop_out = rinfo->nexthop; |
16705130 | 2274 | |
2275 | /* Interface route-map */ | |
2276 | if (ri->routemap[RIP_FILTER_OUT]) | |
2277 | { | |
2278 | ret = route_map_apply (ri->routemap[RIP_FILTER_OUT], | |
2279 | (struct prefix *) p, RMAP_RIP, | |
2280 | rinfo); | |
2281 | ||
2282 | if (ret == RMAP_DENYMATCH) | |
2283 | { | |
2284 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 2285 | zlog_debug ("RIP %s/%d is filtered by route-map out", |
d904a9fc DS |
2286 | inet_ntoa (p->prefix), p->prefixlen); |
2287 | continue; | |
16705130 | 2288 | } |
2289 | } | |
718e3744 | 2290 | |
16705130 | 2291 | /* Apply redistribute route map - continue, if deny */ |
718e3744 | 2292 | if (rip->route_map[rinfo->type].name |
2293 | && rinfo->sub_type != RIP_ROUTE_INTERFACE) | |
2294 | { | |
2295 | ret = route_map_apply (rip->route_map[rinfo->type].map, | |
2296 | (struct prefix *)p, RMAP_RIP, rinfo); | |
2297 | ||
2298 | if (ret == RMAP_DENYMATCH) | |
2299 | { | |
2300 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 2301 | zlog_debug ("%s/%d is filtered by route-map", |
718e3744 | 2302 | inet_ntoa (p->prefix), p->prefixlen); |
2303 | continue; | |
2304 | } | |
2305 | } | |
2306 | ||
2307 | /* When route-map does not set metric. */ | |
2308 | if (! rinfo->metric_set) | |
2309 | { | |
2310 | /* If redistribute metric is set. */ | |
2311 | if (rip->route_map[rinfo->type].metric_config | |
2312 | && rinfo->metric != RIP_METRIC_INFINITY) | |
2313 | { | |
2314 | rinfo->metric_out = rip->route_map[rinfo->type].metric; | |
2315 | } | |
2316 | else | |
2317 | { | |
2318 | /* If the route is not connected or localy generated | |
2319 | one, use default-metric value*/ | |
2320 | if (rinfo->type != ZEBRA_ROUTE_RIP | |
2321 | && rinfo->type != ZEBRA_ROUTE_CONNECT | |
2322 | && rinfo->metric != RIP_METRIC_INFINITY) | |
2323 | rinfo->metric_out = rip->default_metric; | |
2324 | } | |
2325 | } | |
2326 | ||
2327 | /* Apply offset-list */ | |
2328 | if (rinfo->metric != RIP_METRIC_INFINITY) | |
c49ad8f1 | 2329 | rip_offset_list_apply_out (p, ifc->ifp, &rinfo->metric_out); |
718e3744 | 2330 | |
2331 | if (rinfo->metric_out > RIP_METRIC_INFINITY) | |
2332 | rinfo->metric_out = RIP_METRIC_INFINITY; | |
16705130 | 2333 | |
2334 | /* Perform split-horizon with poisoned reverse | |
2335 | * for RIP and connected routes. | |
2336 | **/ | |
2337 | if (ri->split_horizon == RIP_SPLIT_HORIZON_POISONED_REVERSE) { | |
42d14d98 | 2338 | /* |
2339 | * We perform split horizon for RIP and connected route. | |
2340 | * For rip routes, we want to suppress the route if we would | |
2341 | * end up sending the route back on the interface that we | |
2342 | * learned it from, with a higher metric. For connected routes, | |
2343 | * we suppress the route if the prefix is a subset of the | |
2344 | * source address that we are going to use for the packet | |
2345 | * (in order to handle the case when multiple subnets are | |
2346 | * configured on the same interface). | |
2347 | */ | |
bce8e868 LF |
2348 | struct rip_info *tmp_rinfo = NULL; |
2349 | ||
2350 | for (ALL_LIST_ELEMENTS_RO (list, listnode, tmp_rinfo)) | |
2351 | if (tmp_rinfo->type == ZEBRA_ROUTE_RIP && | |
2352 | tmp_rinfo->ifindex == ifc->ifp->ifindex) | |
2353 | rinfo->metric_out = RIP_METRIC_INFINITY; | |
2354 | if (tmp_rinfo->type == ZEBRA_ROUTE_CONNECT && | |
c49ad8f1 | 2355 | prefix_match((struct prefix *)p, ifc->address)) |
bce8e868 | 2356 | rinfo->metric_out = RIP_METRIC_INFINITY; |
16705130 | 2357 | } |
b14ee00b | 2358 | |
2359 | /* Prepare preamble, auth headers, if needs be */ | |
2360 | if (num == 0) | |
2361 | { | |
2362 | stream_putc (s, RIP_RESPONSE); | |
2363 | stream_putc (s, version); | |
2364 | stream_putw (s, 0); | |
2365 | ||
0cb8a01c | 2366 | /* auth header for !v1 && !no_auth */ |
2367 | if ( (ri->auth_type != RIP_NO_AUTH) && (version != RIPv1) ) | |
b14ee00b | 2368 | doff = rip_auth_header_write (s, ri, key, auth_str, |
2369 | RIP_AUTH_SIMPLE_SIZE); | |
2370 | } | |
2371 | ||
718e3744 | 2372 | /* Write RTE to the stream. */ |
b14ee00b | 2373 | num = rip_write_rte (num, s, p, version, rinfo); |
718e3744 | 2374 | if (num == rtemax) |
2375 | { | |
2376 | if (version == RIPv2 && ri->auth_type == RIP_AUTH_MD5) | |
b14ee00b | 2377 | rip_auth_md5_set (s, ri, doff, auth_str, RIP_AUTH_SIMPLE_SIZE); |
718e3744 | 2378 | |
2379 | ret = rip_send_packet (STREAM_DATA (s), stream_get_endp (s), | |
c49ad8f1 | 2380 | to, ifc); |
718e3744 | 2381 | |
2382 | if (ret >= 0 && IS_RIP_DEBUG_SEND) | |
2383 | rip_packet_dump ((struct rip_packet *)STREAM_DATA (s), | |
2384 | stream_get_endp(s), "SEND"); | |
2385 | num = 0; | |
2386 | stream_reset (s); | |
2387 | } | |
2388 | } | |
2389 | ||
2390 | /* Flush unwritten RTE. */ | |
2391 | if (num != 0) | |
2392 | { | |
2393 | if (version == RIPv2 && ri->auth_type == RIP_AUTH_MD5) | |
b14ee00b | 2394 | rip_auth_md5_set (s, ri, doff, auth_str, RIP_AUTH_SIMPLE_SIZE); |
718e3744 | 2395 | |
c49ad8f1 | 2396 | ret = rip_send_packet (STREAM_DATA (s), stream_get_endp (s), to, ifc); |
718e3744 | 2397 | |
2398 | if (ret >= 0 && IS_RIP_DEBUG_SEND) | |
2399 | rip_packet_dump ((struct rip_packet *)STREAM_DATA (s), | |
2400 | stream_get_endp (s), "SEND"); | |
2401 | num = 0; | |
2402 | stream_reset (s); | |
2403 | } | |
2404 | ||
2405 | /* Statistics updates. */ | |
2406 | ri->sent_updates++; | |
2407 | } | |
2408 | ||
2409 | /* Send RIP packet to the interface. */ | |
dc63bfd4 | 2410 | static void |
c49ad8f1 | 2411 | rip_update_interface (struct connected *ifc, u_char version, int route_type) |
718e3744 | 2412 | { |
f90310cf RW |
2413 | struct interface *ifp = ifc->ifp; |
2414 | struct rip_interface *ri = ifp->info; | |
718e3744 | 2415 | struct sockaddr_in to; |
2416 | ||
2417 | /* When RIP version is 2 and multicast enable interface. */ | |
f90310cf | 2418 | if (version == RIPv2 && !ri->v2_broadcast && if_is_multicast (ifp)) |
718e3744 | 2419 | { |
2420 | if (IS_RIP_DEBUG_EVENT) | |
f90310cf | 2421 | zlog_debug ("multicast announce on %s ", ifp->name); |
718e3744 | 2422 | |
c49ad8f1 | 2423 | rip_output_process (ifc, NULL, route_type, version); |
718e3744 | 2424 | return; |
2425 | } | |
c49ad8f1 | 2426 | |
718e3744 | 2427 | /* If we can't send multicast packet, send it with unicast. */ |
f90310cf | 2428 | if (if_is_broadcast (ifp) || if_is_pointopoint (ifp)) |
718e3744 | 2429 | { |
c49ad8f1 | 2430 | if (ifc->address->family == AF_INET) |
2431 | { | |
2432 | /* Destination address and port setting. */ | |
2433 | memset (&to, 0, sizeof (struct sockaddr_in)); | |
2434 | if (ifc->destination) | |
e4529636 | 2435 | /* use specified broadcast or peer destination addr */ |
c49ad8f1 | 2436 | to.sin_addr = ifc->destination->u.prefix4; |
e4529636 | 2437 | else if (ifc->address->prefixlen < IPV4_MAX_PREFIXLEN) |
c49ad8f1 | 2438 | /* calculate the appropriate broadcast address */ |
2439 | to.sin_addr.s_addr = | |
2440 | ipv4_broadcast_addr(ifc->address->u.prefix4.s_addr, | |
2441 | ifc->address->prefixlen); | |
e4529636 AS |
2442 | else |
2443 | /* do not know where to send the packet */ | |
2444 | return; | |
c49ad8f1 | 2445 | to.sin_port = htons (RIP_PORT_DEFAULT); |
718e3744 | 2446 | |
c49ad8f1 | 2447 | if (IS_RIP_DEBUG_EVENT) |
e4529636 AS |
2448 | zlog_debug("%s announce to %s on %s", |
2449 | CONNECTED_PEER(ifc) ? "unicast" : "broadcast", | |
f90310cf | 2450 | inet_ntoa (to.sin_addr), ifp->name); |
718e3744 | 2451 | |
c49ad8f1 | 2452 | rip_output_process (ifc, &to, route_type, version); |
2453 | } | |
718e3744 | 2454 | } |
2455 | } | |
2456 | ||
2457 | /* Update send to all interface and neighbor. */ | |
dc63bfd4 | 2458 | static void |
718e3744 | 2459 | rip_update_process (int route_type) |
2460 | { | |
1eb8ef25 | 2461 | struct listnode *node; |
2462 | struct listnode *ifnode, *ifnnode; | |
cc1131ab | 2463 | struct connected *connected; |
718e3744 | 2464 | struct interface *ifp; |
2465 | struct rip_interface *ri; | |
2466 | struct route_node *rp; | |
2467 | struct sockaddr_in to; | |
bd40c341 | 2468 | struct prefix *p; |
718e3744 | 2469 | |
2470 | /* Send RIP update to each interface. */ | |
b2d7c082 | 2471 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), node, ifp)) |
718e3744 | 2472 | { |
718e3744 | 2473 | if (if_is_loopback (ifp)) |
2474 | continue; | |
2475 | ||
2e3b2e47 | 2476 | if (! if_is_operative (ifp)) |
718e3744 | 2477 | continue; |
2478 | ||
2479 | /* Fetch RIP interface information. */ | |
2480 | ri = ifp->info; | |
2481 | ||
2482 | /* When passive interface is specified, suppress announce to the | |
2483 | interface. */ | |
2484 | if (ri->passive) | |
2485 | continue; | |
2486 | ||
2487 | if (ri->running) | |
2488 | { | |
b9d92881 AS |
2489 | /* |
2490 | * If there is no version configuration in the interface, | |
2491 | * use rip's version setting. | |
2492 | */ | |
2493 | int vsend = ((ri->ri_send == RI_RIP_UNSPEC) ? | |
2494 | rip->version_send : ri->ri_send); | |
2495 | ||
718e3744 | 2496 | if (IS_RIP_DEBUG_EVENT) |
b9d92881 | 2497 | zlog_debug("SEND UPDATE to %s ifindex %d", |
85b123a4 | 2498 | ifp->name, ifp->ifindex); |
718e3744 | 2499 | |
cc1131ab | 2500 | /* send update on each connected network */ |
1eb8ef25 | 2501 | for (ALL_LIST_ELEMENTS (ifp->connected, ifnode, ifnnode, connected)) |
cc1131ab | 2502 | { |
b9d92881 AS |
2503 | if (connected->address->family == AF_INET) |
2504 | { | |
2505 | if (vsend & RIPv1) | |
2506 | rip_update_interface (connected, RIPv1, route_type); | |
2507 | if ((vsend & RIPv2) && if_is_multicast(ifp)) | |
2508 | rip_update_interface (connected, RIPv2, route_type); | |
2509 | } | |
2510 | } | |
718e3744 | 2511 | } |
2512 | } | |
2513 | ||
2514 | /* RIP send updates to each neighbor. */ | |
2515 | for (rp = route_top (rip->neighbor); rp; rp = route_next (rp)) | |
2516 | if (rp->info != NULL) | |
2517 | { | |
bd40c341 | 2518 | p = &rp->p; |
718e3744 | 2519 | |
95af5f13 | 2520 | connected = if_lookup_address (&p->u.prefix4, AF_INET, VRF_DEFAULT); |
b10ce841 | 2521 | if (! connected) |
718e3744 | 2522 | { |
c49ad8f1 | 2523 | zlog_warn ("Neighbor %s doesnt have connected interface!", |
bd40c341 | 2524 | inet_ntoa (p->u.prefix4)); |
718e3744 | 2525 | continue; |
2526 | } | |
c49ad8f1 | 2527 | |
718e3744 | 2528 | /* Set destination address and port */ |
2529 | memset (&to, 0, sizeof (struct sockaddr_in)); | |
bd40c341 | 2530 | to.sin_addr = p->u.prefix4; |
718e3744 | 2531 | to.sin_port = htons (RIP_PORT_DEFAULT); |
2532 | ||
2533 | /* RIP version is rip's configuration. */ | |
c49ad8f1 | 2534 | rip_output_process (connected, &to, route_type, rip->version_send); |
718e3744 | 2535 | } |
2536 | } | |
2537 | ||
2538 | /* RIP's periodical timer. */ | |
dc63bfd4 | 2539 | static int |
718e3744 | 2540 | rip_update (struct thread *t) |
2541 | { | |
2542 | /* Clear timer pointer. */ | |
2543 | rip->t_update = NULL; | |
2544 | ||
2545 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 2546 | zlog_debug ("update timer fire!"); |
718e3744 | 2547 | |
2548 | /* Process update output. */ | |
2549 | rip_update_process (rip_all_route); | |
2550 | ||
2551 | /* Triggered updates may be suppressed if a regular update is due by | |
2552 | the time the triggered update would be sent. */ | |
8578874d | 2553 | RIP_TIMER_OFF (rip->t_triggered_interval); |
718e3744 | 2554 | rip->trigger = 0; |
2555 | ||
2556 | /* Register myself. */ | |
2557 | rip_event (RIP_UPDATE_EVENT, 0); | |
2558 | ||
2559 | return 0; | |
2560 | } | |
2561 | ||
2562 | /* Walk down the RIP routing table then clear changed flag. */ | |
dc63bfd4 | 2563 | static void |
216565ab | 2564 | rip_clear_changed_flag (void) |
718e3744 | 2565 | { |
2566 | struct route_node *rp; | |
bce8e868 LF |
2567 | struct rip_info *rinfo = NULL; |
2568 | struct list *list = NULL; | |
2569 | struct listnode *listnode = NULL; | |
718e3744 | 2570 | |
2571 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) | |
bce8e868 LF |
2572 | if ((list = rp->info) != NULL) |
2573 | for (ALL_LIST_ELEMENTS_RO (list, listnode, rinfo)) | |
2574 | { | |
2575 | UNSET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
2576 | /* This flag can be set only on the first entry. */ | |
2577 | break; | |
2578 | } | |
718e3744 | 2579 | } |
2580 | ||
2581 | /* Triggered update interval timer. */ | |
dc63bfd4 | 2582 | static int |
718e3744 | 2583 | rip_triggered_interval (struct thread *t) |
2584 | { | |
2585 | int rip_triggered_update (struct thread *); | |
2586 | ||
2587 | rip->t_triggered_interval = NULL; | |
2588 | ||
2589 | if (rip->trigger) | |
2590 | { | |
2591 | rip->trigger = 0; | |
2592 | rip_triggered_update (t); | |
2593 | } | |
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | /* Execute triggered update. */ | |
dc63bfd4 | 2598 | static int |
718e3744 | 2599 | rip_triggered_update (struct thread *t) |
2600 | { | |
2601 | int interval; | |
2602 | ||
2603 | /* Clear thred pointer. */ | |
2604 | rip->t_triggered_update = NULL; | |
2605 | ||
2606 | /* Cancel interval timer. */ | |
8578874d | 2607 | RIP_TIMER_OFF (rip->t_triggered_interval); |
718e3744 | 2608 | rip->trigger = 0; |
2609 | ||
2610 | /* Logging triggered update. */ | |
2611 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 2612 | zlog_debug ("triggered update!"); |
718e3744 | 2613 | |
2614 | /* Split Horizon processing is done when generating triggered | |
2615 | updates as well as normal updates (see section 2.6). */ | |
2616 | rip_update_process (rip_changed_route); | |
2617 | ||
2618 | /* Once all of the triggered updates have been generated, the route | |
2619 | change flags should be cleared. */ | |
2620 | rip_clear_changed_flag (); | |
2621 | ||
2622 | /* After a triggered update is sent, a timer should be set for a | |
2623 | random interval between 1 and 5 seconds. If other changes that | |
2624 | would trigger updates occur before the timer expires, a single | |
2625 | update is triggered when the timer expires. */ | |
2626 | interval = (random () % 5) + 1; | |
2627 | ||
2628 | rip->t_triggered_interval = | |
2629 | thread_add_timer (master, rip_triggered_interval, NULL, interval); | |
2630 | ||
2631 | return 0; | |
2632 | } | |
2633 | ||
2634 | /* Withdraw redistributed route. */ | |
2635 | void | |
2636 | rip_redistribute_withdraw (int type) | |
2637 | { | |
2638 | struct route_node *rp; | |
bce8e868 LF |
2639 | struct rip_info *rinfo = NULL; |
2640 | struct list *list = NULL; | |
718e3744 | 2641 | |
2642 | if (!rip) | |
2643 | return; | |
2644 | ||
2645 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) | |
bce8e868 | 2646 | if ((list = rp->info) != NULL) |
718e3744 | 2647 | { |
bce8e868 | 2648 | rinfo = listgetdata (listhead (list)); |
718e3744 | 2649 | if (rinfo->type == type |
2650 | && rinfo->sub_type != RIP_ROUTE_INTERFACE) | |
2651 | { | |
2652 | /* Perform poisoned reverse. */ | |
2653 | rinfo->metric = RIP_METRIC_INFINITY; | |
2654 | RIP_TIMER_ON (rinfo->t_garbage_collect, | |
2655 | rip_garbage_collect, rip->garbage_time); | |
2656 | RIP_TIMER_OFF (rinfo->t_timeout); | |
2657 | rinfo->flags |= RIP_RTF_CHANGED; | |
2658 | ||
16705130 | 2659 | if (IS_RIP_DEBUG_EVENT) { |
2660 | struct prefix_ipv4 *p = (struct prefix_ipv4 *) &rp->p; | |
2661 | ||
5d6c3779 | 2662 | zlog_debug ("Poisone %s/%d on the interface %s with an infinity metric [withdraw]", |
baaea325 DS |
2663 | inet_ntoa(p->prefix), p->prefixlen, |
2664 | ifindex2ifname(rinfo->ifindex, VRF_DEFAULT)); | |
16705130 | 2665 | } |
2666 | ||
718e3744 | 2667 | rip_event (RIP_TRIGGERED_UPDATE, 0); |
2668 | } | |
2669 | } | |
2670 | } | |
2671 | ||
2672 | /* Create new RIP instance and set it to global variable. */ | |
dc63bfd4 | 2673 | static int |
2674 | rip_create (void) | |
718e3744 | 2675 | { |
393deb9b | 2676 | rip = XCALLOC (MTYPE_RIP, sizeof (struct rip)); |
718e3744 | 2677 | |
2678 | /* Set initial value. */ | |
f38a471c | 2679 | rip->version_send = RI_RIP_VERSION_2; |
2680 | rip->version_recv = RI_RIP_VERSION_1_AND_2; | |
718e3744 | 2681 | rip->update_time = RIP_UPDATE_TIMER_DEFAULT; |
2682 | rip->timeout_time = RIP_TIMEOUT_TIMER_DEFAULT; | |
2683 | rip->garbage_time = RIP_GARBAGE_TIMER_DEFAULT; | |
2684 | rip->default_metric = RIP_DEFAULT_METRIC_DEFAULT; | |
2685 | ||
2686 | /* Initialize RIP routig table. */ | |
2687 | rip->table = route_table_init (); | |
2688 | rip->route = route_table_init (); | |
2689 | rip->neighbor = route_table_init (); | |
2690 | ||
2691 | /* Make output stream. */ | |
2692 | rip->obuf = stream_new (1500); | |
2693 | ||
2694 | /* Make socket. */ | |
ae735d2d | 2695 | rip->sock = rip_create_socket (); |
718e3744 | 2696 | if (rip->sock < 0) |
2697 | return rip->sock; | |
2698 | ||
2699 | /* Create read and timer thread. */ | |
2700 | rip_event (RIP_READ, rip->sock); | |
2701 | rip_event (RIP_UPDATE_EVENT, 1); | |
2702 | ||
f6eacff4 DL |
2703 | QOBJ_REG (rip, rip); |
2704 | ||
718e3744 | 2705 | return 0; |
2706 | } | |
2707 | ||
2708 | /* Sned RIP request to the destination. */ | |
2709 | int | |
2710 | rip_request_send (struct sockaddr_in *to, struct interface *ifp, | |
931cd54d | 2711 | u_char version, struct connected *connected) |
718e3744 | 2712 | { |
2713 | struct rte *rte; | |
2714 | struct rip_packet rip_packet; | |
1eb8ef25 | 2715 | struct listnode *node, *nnode; |
718e3744 | 2716 | |
2717 | memset (&rip_packet, 0, sizeof (rip_packet)); | |
2718 | ||
2719 | rip_packet.command = RIP_REQUEST; | |
2720 | rip_packet.version = version; | |
2721 | rte = rip_packet.rte; | |
2722 | rte->metric = htonl (RIP_METRIC_INFINITY); | |
2723 | ||
931cd54d | 2724 | if (connected) |
2725 | { | |
2726 | /* | |
2727 | * connected is only sent for ripv1 case, or when | |
2728 | * interface does not support multicast. Caller loops | |
2729 | * over each connected address for this case. | |
2730 | */ | |
11dde9c2 | 2731 | if (rip_send_packet ((u_char *) &rip_packet, sizeof (rip_packet), |
c49ad8f1 | 2732 | to, connected) != sizeof (rip_packet)) |
931cd54d | 2733 | return -1; |
2734 | else | |
2735 | return sizeof (rip_packet); | |
2736 | } | |
2737 | ||
cc1131ab | 2738 | /* send request on each connected network */ |
1eb8ef25 | 2739 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, connected)) |
cc1131ab | 2740 | { |
2741 | struct prefix_ipv4 *p; | |
2742 | ||
2743 | p = (struct prefix_ipv4 *) connected->address; | |
2744 | ||
2745 | if (p->family != AF_INET) | |
2746 | continue; | |
2747 | ||
11dde9c2 | 2748 | if (rip_send_packet ((u_char *) &rip_packet, sizeof (rip_packet), |
c49ad8f1 | 2749 | to, connected) != sizeof (rip_packet)) |
cc1131ab | 2750 | return -1; |
2751 | } | |
2752 | return sizeof (rip_packet); | |
718e3744 | 2753 | } |
6b0655a2 | 2754 | |
dc63bfd4 | 2755 | static int |
718e3744 | 2756 | rip_update_jitter (unsigned long time) |
2757 | { | |
239389ba | 2758 | #define JITTER_BOUND 4 |
2759 | /* We want to get the jitter to +/- 1/JITTER_BOUND the interval. | |
2760 | Given that, we cannot let time be less than JITTER_BOUND seconds. | |
2761 | The RIPv2 RFC says jitter should be small compared to | |
2762 | update_time. We consider 1/JITTER_BOUND to be small. | |
2763 | */ | |
2764 | ||
2765 | int jitter_input = time; | |
2766 | int jitter; | |
2767 | ||
2768 | if (jitter_input < JITTER_BOUND) | |
2769 | jitter_input = JITTER_BOUND; | |
2770 | ||
b06fd125 | 2771 | jitter = (((random () % ((jitter_input * 2) + 1)) - jitter_input)); |
239389ba | 2772 | |
2773 | return jitter/JITTER_BOUND; | |
718e3744 | 2774 | } |
2775 | ||
2776 | void | |
2777 | rip_event (enum rip_event event, int sock) | |
2778 | { | |
2779 | int jitter = 0; | |
2780 | ||
2781 | switch (event) | |
2782 | { | |
2783 | case RIP_READ: | |
2784 | rip->t_read = thread_add_read (master, rip_read, NULL, sock); | |
2785 | break; | |
2786 | case RIP_UPDATE_EVENT: | |
8578874d | 2787 | RIP_TIMER_OFF (rip->t_update); |
718e3744 | 2788 | jitter = rip_update_jitter (rip->update_time); |
2789 | rip->t_update = | |
2790 | thread_add_timer (master, rip_update, NULL, | |
2791 | sock ? 2 : rip->update_time + jitter); | |
2792 | break; | |
2793 | case RIP_TRIGGERED_UPDATE: | |
2794 | if (rip->t_triggered_interval) | |
2795 | rip->trigger = 1; | |
2796 | else if (! rip->t_triggered_update) | |
2797 | rip->t_triggered_update = | |
2798 | thread_add_event (master, rip_triggered_update, NULL, 0); | |
2799 | break; | |
2800 | default: | |
2801 | break; | |
2802 | } | |
2803 | } | |
6b0655a2 | 2804 | |
718e3744 | 2805 | DEFUN (router_rip, |
2806 | router_rip_cmd, | |
2807 | "router rip", | |
2808 | "Enable a routing process\n" | |
2809 | "Routing Information Protocol (RIP)\n") | |
2810 | { | |
2811 | int ret; | |
2812 | ||
2813 | /* If rip is not enabled before. */ | |
2814 | if (! rip) | |
2815 | { | |
2816 | ret = rip_create (); | |
2817 | if (ret < 0) | |
2818 | { | |
2819 | zlog_info ("Can't create RIP"); | |
2820 | return CMD_WARNING; | |
2821 | } | |
2822 | } | |
cdc2d765 | 2823 | VTY_PUSH_CONTEXT(RIP_NODE, rip); |
718e3744 | 2824 | |
2825 | return CMD_SUCCESS; | |
2826 | } | |
2827 | ||
2828 | DEFUN (no_router_rip, | |
2829 | no_router_rip_cmd, | |
2830 | "no router rip", | |
2831 | NO_STR | |
2832 | "Enable a routing process\n" | |
2833 | "Routing Information Protocol (RIP)\n") | |
2834 | { | |
2835 | if (rip) | |
2836 | rip_clean (); | |
2837 | return CMD_SUCCESS; | |
2838 | } | |
2839 | ||
2840 | DEFUN (rip_version, | |
2841 | rip_version_cmd, | |
6147e2c6 | 2842 | "version (1-2)", |
718e3744 | 2843 | "Set routing protocol version\n" |
2844 | "version\n") | |
2845 | { | |
80fa0c69 | 2846 | int idx_number = 1; |
718e3744 | 2847 | int version; |
2848 | ||
80fa0c69 | 2849 | version = atoi (argv[idx_number]->arg); |
718e3744 | 2850 | if (version != RIPv1 && version != RIPv2) |
2851 | { | |
2852 | vty_out (vty, "invalid rip version %d%s", version, | |
2853 | VTY_NEWLINE); | |
2854 | return CMD_WARNING; | |
2855 | } | |
f38a471c | 2856 | rip->version_send = version; |
2857 | rip->version_recv = version; | |
718e3744 | 2858 | |
2859 | return CMD_SUCCESS; | |
80fa0c69 | 2860 | } |
718e3744 | 2861 | |
2862 | DEFUN (no_rip_version, | |
2863 | no_rip_version_cmd, | |
55c727dd | 2864 | "no version [(1-2)]", |
718e3744 | 2865 | NO_STR |
55c727dd QY |
2866 | "Set routing protocol version\n" |
2867 | "Version\n") | |
718e3744 | 2868 | { |
2869 | /* Set RIP version to the default. */ | |
f38a471c | 2870 | rip->version_send = RI_RIP_VERSION_2; |
2871 | rip->version_recv = RI_RIP_VERSION_1_AND_2; | |
718e3744 | 2872 | |
2873 | return CMD_SUCCESS; | |
80fa0c69 | 2874 | } |
718e3744 | 2875 | |
718e3744 | 2876 | |
2877 | DEFUN (rip_route, | |
2878 | rip_route_cmd, | |
2879 | "route A.B.C.D/M", | |
2880 | "RIP static route configuration\n" | |
2881 | "IP prefix <network>/<length>\n") | |
2882 | { | |
80fa0c69 | 2883 | int idx_ipv4_prefixlen = 1; |
718e3744 | 2884 | int ret; |
2885 | struct prefix_ipv4 p; | |
2886 | struct route_node *node; | |
2887 | ||
80fa0c69 | 2888 | ret = str2prefix_ipv4 (argv[idx_ipv4_prefixlen]->arg, &p); |
718e3744 | 2889 | if (ret < 0) |
2890 | { | |
2891 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2892 | return CMD_WARNING; | |
2893 | } | |
2894 | apply_mask_ipv4 (&p); | |
2895 | ||
2896 | /* For router rip configuration. */ | |
2897 | node = route_node_get (rip->route, (struct prefix *) &p); | |
2898 | ||
2899 | if (node->info) | |
2900 | { | |
2901 | vty_out (vty, "There is already same static route.%s", VTY_NEWLINE); | |
2902 | route_unlock_node (node); | |
2903 | return CMD_WARNING; | |
2904 | } | |
2905 | ||
e5f745ca | 2906 | node->info = (void *)1; |
718e3744 | 2907 | |
9471675f | 2908 | rip_redistribute_add (ZEBRA_ROUTE_RIP, RIP_ROUTE_STATIC, &p, 0, NULL, 0, 0, 0); |
718e3744 | 2909 | |
2910 | return CMD_SUCCESS; | |
2911 | } | |
2912 | ||
2913 | DEFUN (no_rip_route, | |
2914 | no_rip_route_cmd, | |
2915 | "no route A.B.C.D/M", | |
2916 | NO_STR | |
2917 | "RIP static route configuration\n" | |
2918 | "IP prefix <network>/<length>\n") | |
2919 | { | |
80fa0c69 | 2920 | int idx_ipv4_prefixlen = 2; |
718e3744 | 2921 | int ret; |
2922 | struct prefix_ipv4 p; | |
2923 | struct route_node *node; | |
2924 | ||
80fa0c69 | 2925 | ret = str2prefix_ipv4 (argv[idx_ipv4_prefixlen]->arg, &p); |
718e3744 | 2926 | if (ret < 0) |
2927 | { | |
2928 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2929 | return CMD_WARNING; | |
2930 | } | |
2931 | apply_mask_ipv4 (&p); | |
2932 | ||
2933 | /* For router rip configuration. */ | |
2934 | node = route_node_lookup (rip->route, (struct prefix *) &p); | |
2935 | if (! node) | |
2936 | { | |
80fa0c69 | 2937 | vty_out (vty, "Can't find route %s.%s", argv[idx_ipv4_prefixlen]->arg, |
718e3744 | 2938 | VTY_NEWLINE); |
2939 | return CMD_WARNING; | |
2940 | } | |
2941 | ||
2942 | rip_redistribute_delete (ZEBRA_ROUTE_RIP, RIP_ROUTE_STATIC, &p, 0); | |
2943 | route_unlock_node (node); | |
2944 | ||
2945 | node->info = NULL; | |
2946 | route_unlock_node (node); | |
2947 | ||
2948 | return CMD_SUCCESS; | |
2949 | } | |
2950 | ||
2c239705 | 2951 | #if 0 |
dc63bfd4 | 2952 | static void |
216565ab | 2953 | rip_update_default_metric (void) |
718e3744 | 2954 | { |
2955 | struct route_node *np; | |
bce8e868 LF |
2956 | struct rip_info *rinfo = NULL; |
2957 | struct list *list = NULL; | |
2958 | struct listnode *listnode = NULL; | |
718e3744 | 2959 | |
2960 | for (np = route_top (rip->table); np; np = route_next (np)) | |
bce8e868 LF |
2961 | if ((list = np->info) != NULL) |
2962 | for (ALL_LIST_ELEMENTS_RO (list, listnode, rinfo)) | |
2963 | if (rinfo->type != ZEBRA_ROUTE_RIP && rinfo->type != ZEBRA_ROUTE_CONNECT) | |
2964 | rinfo->metric = rip->default_metric; | |
718e3744 | 2965 | } |
2c239705 | 2966 | #endif |
718e3744 | 2967 | |
2968 | DEFUN (rip_default_metric, | |
2969 | rip_default_metric_cmd, | |
6147e2c6 | 2970 | "default-metric (1-16)", |
718e3744 | 2971 | "Set a metric of redistribute routes\n" |
2972 | "Default metric\n") | |
2973 | { | |
80fa0c69 | 2974 | int idx_number = 1; |
718e3744 | 2975 | if (rip) |
2976 | { | |
80fa0c69 | 2977 | rip->default_metric = atoi (argv[idx_number]->arg); |
718e3744 | 2978 | /* rip_update_default_metric (); */ |
2979 | } | |
2980 | return CMD_SUCCESS; | |
2981 | } | |
2982 | ||
2983 | DEFUN (no_rip_default_metric, | |
2984 | no_rip_default_metric_cmd, | |
55c727dd | 2985 | "no default-metric [(1-16)]", |
718e3744 | 2986 | NO_STR |
2987 | "Set a metric of redistribute routes\n" | |
2988 | "Default metric\n") | |
2989 | { | |
2990 | if (rip) | |
2991 | { | |
2992 | rip->default_metric = RIP_DEFAULT_METRIC_DEFAULT; | |
2993 | /* rip_update_default_metric (); */ | |
2994 | } | |
2995 | return CMD_SUCCESS; | |
2996 | } | |
2997 | ||
718e3744 | 2998 | |
2999 | DEFUN (rip_timers, | |
3000 | rip_timers_cmd, | |
6147e2c6 | 3001 | "timers basic (5-2147483647) (5-2147483647) (5-2147483647)", |
718e3744 | 3002 | "Adjust routing timers\n" |
3003 | "Basic routing protocol update timers\n" | |
3004 | "Routing table update timer value in second. Default is 30.\n" | |
3005 | "Routing information timeout timer. Default is 180.\n" | |
3006 | "Garbage collection timer. Default is 120.\n") | |
3007 | { | |
80fa0c69 DW |
3008 | int idx_number = 2; |
3009 | int idx_number_2 = 3; | |
3010 | int idx_number_3 = 4; | |
718e3744 | 3011 | unsigned long update; |
3012 | unsigned long timeout; | |
3013 | unsigned long garbage; | |
3014 | char *endptr = NULL; | |
3015 | unsigned long RIP_TIMER_MAX = 2147483647; | |
3016 | unsigned long RIP_TIMER_MIN = 5; | |
3017 | ||
80fa0c69 | 3018 | update = strtoul (argv[idx_number]->arg, &endptr, 10); |
718e3744 | 3019 | if (update > RIP_TIMER_MAX || update < RIP_TIMER_MIN || *endptr != '\0') |
3020 | { | |
3021 | vty_out (vty, "update timer value error%s", VTY_NEWLINE); | |
3022 | return CMD_WARNING; | |
3023 | } | |
3024 | ||
80fa0c69 | 3025 | timeout = strtoul (argv[idx_number_2]->arg, &endptr, 10); |
718e3744 | 3026 | if (timeout > RIP_TIMER_MAX || timeout < RIP_TIMER_MIN || *endptr != '\0') |
3027 | { | |
3028 | vty_out (vty, "timeout timer value error%s", VTY_NEWLINE); | |
3029 | return CMD_WARNING; | |
3030 | } | |
3031 | ||
80fa0c69 | 3032 | garbage = strtoul (argv[idx_number_3]->arg, &endptr, 10); |
718e3744 | 3033 | if (garbage > RIP_TIMER_MAX || garbage < RIP_TIMER_MIN || *endptr != '\0') |
3034 | { | |
3035 | vty_out (vty, "garbage timer value error%s", VTY_NEWLINE); | |
3036 | return CMD_WARNING; | |
3037 | } | |
3038 | ||
3039 | /* Set each timer value. */ | |
3040 | rip->update_time = update; | |
3041 | rip->timeout_time = timeout; | |
3042 | rip->garbage_time = garbage; | |
3043 | ||
3044 | /* Reset update timer thread. */ | |
3045 | rip_event (RIP_UPDATE_EVENT, 0); | |
3046 | ||
3047 | return CMD_SUCCESS; | |
3048 | } | |
3049 | ||
3050 | DEFUN (no_rip_timers, | |
3051 | no_rip_timers_cmd, | |
55c727dd | 3052 | "no timers basic [(0-65535) (0-65535) (0-65535)]", |
718e3744 | 3053 | NO_STR |
3054 | "Adjust routing timers\n" | |
55c727dd QY |
3055 | "Basic routing protocol update timers\n" |
3056 | "Routing table update timer value in second. Default is 30.\n" | |
3057 | "Routing information timeout timer. Default is 180.\n" | |
3058 | "Garbage collection timer. Default is 120.\n") | |
718e3744 | 3059 | { |
3060 | /* Set each timer value to the default. */ | |
3061 | rip->update_time = RIP_UPDATE_TIMER_DEFAULT; | |
3062 | rip->timeout_time = RIP_TIMEOUT_TIMER_DEFAULT; | |
3063 | rip->garbage_time = RIP_GARBAGE_TIMER_DEFAULT; | |
3064 | ||
3065 | /* Reset update timer thread. */ | |
3066 | rip_event (RIP_UPDATE_EVENT, 0); | |
3067 | ||
3068 | return CMD_SUCCESS; | |
3069 | } | |
16705130 | 3070 | |
16705130 | 3071 | |
6b0655a2 | 3072 | |
718e3744 | 3073 | struct route_table *rip_distance_table; |
3074 | ||
3075 | struct rip_distance | |
3076 | { | |
3077 | /* Distance value for the IP source prefix. */ | |
3078 | u_char distance; | |
3079 | ||
3080 | /* Name of the access-list to be matched. */ | |
3081 | char *access_list; | |
3082 | }; | |
3083 | ||
dc63bfd4 | 3084 | static struct rip_distance * |
216565ab | 3085 | rip_distance_new (void) |
718e3744 | 3086 | { |
393deb9b | 3087 | return XCALLOC (MTYPE_RIP_DISTANCE, sizeof (struct rip_distance)); |
718e3744 | 3088 | } |
3089 | ||
dc63bfd4 | 3090 | static void |
718e3744 | 3091 | rip_distance_free (struct rip_distance *rdistance) |
3092 | { | |
3093 | XFREE (MTYPE_RIP_DISTANCE, rdistance); | |
3094 | } | |
3095 | ||
dc63bfd4 | 3096 | static int |
98b718a9 | 3097 | rip_distance_set (struct vty *vty, const char *distance_str, const char *ip_str, |
3098 | const char *access_list_str) | |
718e3744 | 3099 | { |
3100 | int ret; | |
3101 | struct prefix_ipv4 p; | |
3102 | u_char distance; | |
3103 | struct route_node *rn; | |
3104 | struct rip_distance *rdistance; | |
3105 | ||
3106 | ret = str2prefix_ipv4 (ip_str, &p); | |
3107 | if (ret == 0) | |
3108 | { | |
3109 | vty_out (vty, "Malformed prefix%s", VTY_NEWLINE); | |
3110 | return CMD_WARNING; | |
3111 | } | |
3112 | ||
3113 | distance = atoi (distance_str); | |
3114 | ||
3115 | /* Get RIP distance node. */ | |
3116 | rn = route_node_get (rip_distance_table, (struct prefix *) &p); | |
3117 | if (rn->info) | |
3118 | { | |
3119 | rdistance = rn->info; | |
3120 | route_unlock_node (rn); | |
3121 | } | |
3122 | else | |
3123 | { | |
3124 | rdistance = rip_distance_new (); | |
3125 | rn->info = rdistance; | |
3126 | } | |
3127 | ||
3128 | /* Set distance value. */ | |
3129 | rdistance->distance = distance; | |
3130 | ||
3131 | /* Reset access-list configuration. */ | |
3132 | if (rdistance->access_list) | |
3133 | { | |
3134 | free (rdistance->access_list); | |
3135 | rdistance->access_list = NULL; | |
3136 | } | |
3137 | if (access_list_str) | |
3138 | rdistance->access_list = strdup (access_list_str); | |
3139 | ||
3140 | return CMD_SUCCESS; | |
3141 | } | |
3142 | ||
dc63bfd4 | 3143 | static int |
98b718a9 | 3144 | rip_distance_unset (struct vty *vty, const char *distance_str, |
3145 | const char *ip_str, const char *access_list_str) | |
718e3744 | 3146 | { |
3147 | int ret; | |
3148 | struct prefix_ipv4 p; | |
718e3744 | 3149 | struct route_node *rn; |
3150 | struct rip_distance *rdistance; | |
3151 | ||
3152 | ret = str2prefix_ipv4 (ip_str, &p); | |
3153 | if (ret == 0) | |
3154 | { | |
3155 | vty_out (vty, "Malformed prefix%s", VTY_NEWLINE); | |
3156 | return CMD_WARNING; | |
3157 | } | |
3158 | ||
718e3744 | 3159 | rn = route_node_lookup (rip_distance_table, (struct prefix *)&p); |
3160 | if (! rn) | |
3161 | { | |
3162 | vty_out (vty, "Can't find specified prefix%s", VTY_NEWLINE); | |
3163 | return CMD_WARNING; | |
3164 | } | |
3165 | ||
3166 | rdistance = rn->info; | |
3167 | ||
3168 | if (rdistance->access_list) | |
3169 | free (rdistance->access_list); | |
3170 | rip_distance_free (rdistance); | |
3171 | ||
3172 | rn->info = NULL; | |
3173 | route_unlock_node (rn); | |
3174 | route_unlock_node (rn); | |
3175 | ||
3176 | return CMD_SUCCESS; | |
3177 | } | |
3178 | ||
dc63bfd4 | 3179 | static void |
216565ab | 3180 | rip_distance_reset (void) |
718e3744 | 3181 | { |
3182 | struct route_node *rn; | |
3183 | struct rip_distance *rdistance; | |
3184 | ||
3185 | for (rn = route_top (rip_distance_table); rn; rn = route_next (rn)) | |
3186 | if ((rdistance = rn->info) != NULL) | |
3187 | { | |
3188 | if (rdistance->access_list) | |
3189 | free (rdistance->access_list); | |
3190 | rip_distance_free (rdistance); | |
3191 | rn->info = NULL; | |
3192 | route_unlock_node (rn); | |
3193 | } | |
3194 | } | |
3195 | ||
3196 | /* Apply RIP information to distance method. */ | |
3197 | u_char | |
3198 | rip_distance_apply (struct rip_info *rinfo) | |
3199 | { | |
3200 | struct route_node *rn; | |
3201 | struct prefix_ipv4 p; | |
3202 | struct rip_distance *rdistance; | |
3203 | struct access_list *alist; | |
3204 | ||
3205 | if (! rip) | |
3206 | return 0; | |
3207 | ||
3208 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
3209 | p.family = AF_INET; | |
3210 | p.prefix = rinfo->from; | |
3211 | p.prefixlen = IPV4_MAX_BITLEN; | |
3212 | ||
3213 | /* Check source address. */ | |
3214 | rn = route_node_match (rip_distance_table, (struct prefix *) &p); | |
3215 | if (rn) | |
3216 | { | |
3217 | rdistance = rn->info; | |
3218 | route_unlock_node (rn); | |
3219 | ||
3220 | if (rdistance->access_list) | |
3221 | { | |
3222 | alist = access_list_lookup (AFI_IP, rdistance->access_list); | |
3223 | if (alist == NULL) | |
3224 | return 0; | |
3225 | if (access_list_apply (alist, &rinfo->rp->p) == FILTER_DENY) | |
3226 | return 0; | |
3227 | ||
3228 | return rdistance->distance; | |
3229 | } | |
3230 | else | |
3231 | return rdistance->distance; | |
3232 | } | |
3233 | ||
3234 | if (rip->distance) | |
3235 | return rip->distance; | |
3236 | ||
3237 | return 0; | |
3238 | } | |
3239 | ||
dc63bfd4 | 3240 | static void |
718e3744 | 3241 | rip_distance_show (struct vty *vty) |
3242 | { | |
3243 | struct route_node *rn; | |
3244 | struct rip_distance *rdistance; | |
3245 | int header = 1; | |
3246 | char buf[BUFSIZ]; | |
3247 | ||
3248 | vty_out (vty, " Distance: (default is %d)%s", | |
3249 | rip->distance ? rip->distance :ZEBRA_RIP_DISTANCE_DEFAULT, | |
3250 | VTY_NEWLINE); | |
3251 | ||
3252 | for (rn = route_top (rip_distance_table); rn; rn = route_next (rn)) | |
3253 | if ((rdistance = rn->info) != NULL) | |
3254 | { | |
3255 | if (header) | |
3256 | { | |
3257 | vty_out (vty, " Address Distance List%s", | |
3258 | VTY_NEWLINE); | |
3259 | header = 0; | |
3260 | } | |
3261 | sprintf (buf, "%s/%d", inet_ntoa (rn->p.u.prefix4), rn->p.prefixlen); | |
3262 | vty_out (vty, " %-20s %4d %s%s", | |
3263 | buf, rdistance->distance, | |
3264 | rdistance->access_list ? rdistance->access_list : "", | |
3265 | VTY_NEWLINE); | |
3266 | } | |
3267 | } | |
3268 | ||
3269 | DEFUN (rip_distance, | |
3270 | rip_distance_cmd, | |
6147e2c6 | 3271 | "distance (1-255)", |
718e3744 | 3272 | "Administrative distance\n" |
3273 | "Distance value\n") | |
3274 | { | |
80fa0c69 DW |
3275 | int idx_number = 1; |
3276 | rip->distance = atoi (argv[idx_number]->arg); | |
718e3744 | 3277 | return CMD_SUCCESS; |
3278 | } | |
3279 | ||
3280 | DEFUN (no_rip_distance, | |
3281 | no_rip_distance_cmd, | |
6147e2c6 | 3282 | "no distance (1-255)", |
718e3744 | 3283 | NO_STR |
3284 | "Administrative distance\n" | |
3285 | "Distance value\n") | |
3286 | { | |
3287 | rip->distance = 0; | |
3288 | return CMD_SUCCESS; | |
3289 | } | |
3290 | ||
3291 | DEFUN (rip_distance_source, | |
3292 | rip_distance_source_cmd, | |
6147e2c6 | 3293 | "distance (1-255) A.B.C.D/M", |
718e3744 | 3294 | "Administrative distance\n" |
3295 | "Distance value\n" | |
3296 | "IP source prefix\n") | |
3297 | { | |
80fa0c69 DW |
3298 | int idx_number = 1; |
3299 | int idx_ipv4_prefixlen = 2; | |
3300 | rip_distance_set (vty, argv[idx_number]->arg, argv[idx_ipv4_prefixlen]->arg, NULL); | |
718e3744 | 3301 | return CMD_SUCCESS; |
3302 | } | |
3303 | ||
3304 | DEFUN (no_rip_distance_source, | |
3305 | no_rip_distance_source_cmd, | |
6147e2c6 | 3306 | "no distance (1-255) A.B.C.D/M", |
718e3744 | 3307 | NO_STR |
3308 | "Administrative distance\n" | |
3309 | "Distance value\n" | |
3310 | "IP source prefix\n") | |
3311 | { | |
80fa0c69 DW |
3312 | int idx_number = 2; |
3313 | int idx_ipv4_prefixlen = 3; | |
3314 | rip_distance_unset (vty, argv[idx_number]->arg, argv[idx_ipv4_prefixlen]->arg, NULL); | |
718e3744 | 3315 | return CMD_SUCCESS; |
3316 | } | |
3317 | ||
3318 | DEFUN (rip_distance_source_access_list, | |
3319 | rip_distance_source_access_list_cmd, | |
6147e2c6 | 3320 | "distance (1-255) A.B.C.D/M WORD", |
718e3744 | 3321 | "Administrative distance\n" |
3322 | "Distance value\n" | |
3323 | "IP source prefix\n" | |
3324 | "Access list name\n") | |
3325 | { | |
80fa0c69 DW |
3326 | int idx_number = 1; |
3327 | int idx_ipv4_prefixlen = 2; | |
3328 | int idx_word = 3; | |
3329 | rip_distance_set (vty, argv[idx_number]->arg, argv[idx_ipv4_prefixlen]->arg, argv[idx_word]->arg); | |
718e3744 | 3330 | return CMD_SUCCESS; |
3331 | } | |
3332 | ||
3333 | DEFUN (no_rip_distance_source_access_list, | |
3334 | no_rip_distance_source_access_list_cmd, | |
6147e2c6 | 3335 | "no distance (1-255) A.B.C.D/M WORD", |
718e3744 | 3336 | NO_STR |
3337 | "Administrative distance\n" | |
3338 | "Distance value\n" | |
3339 | "IP source prefix\n" | |
3340 | "Access list name\n") | |
3341 | { | |
80fa0c69 DW |
3342 | int idx_number = 2; |
3343 | int idx_ipv4_prefixlen = 3; | |
3344 | int idx_word = 4; | |
3345 | rip_distance_unset (vty, argv[idx_number]->arg, argv[idx_ipv4_prefixlen]->arg, argv[idx_word]->arg); | |
718e3744 | 3346 | return CMD_SUCCESS; |
3347 | } | |
6b0655a2 | 3348 | |
8478ae7e LF |
3349 | /* Update ECMP routes to zebra when ECMP is disabled. */ |
3350 | static void | |
3351 | rip_ecmp_disable (void) | |
3352 | { | |
3353 | struct route_node *rp; | |
3354 | struct rip_info *rinfo, *tmp_rinfo; | |
3355 | struct list *list; | |
3356 | struct listnode *node, *nextnode; | |
3357 | ||
3358 | if (!rip) | |
3359 | return; | |
3360 | ||
3361 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) | |
3362 | if ((list = rp->info) != NULL && listcount (list) > 1) | |
3363 | { | |
3364 | rinfo = listgetdata (listhead (list)); | |
3365 | if (!rip_route_rte (rinfo)) | |
3366 | continue; | |
3367 | ||
3368 | /* Drop all other entries, except the first one. */ | |
3369 | for (ALL_LIST_ELEMENTS (list, node, nextnode, tmp_rinfo)) | |
3370 | if (tmp_rinfo != rinfo) | |
3371 | { | |
3372 | RIP_TIMER_OFF (tmp_rinfo->t_timeout); | |
3373 | RIP_TIMER_OFF (tmp_rinfo->t_garbage_collect); | |
3374 | list_delete_node (list, node); | |
3375 | rip_info_free (tmp_rinfo); | |
3376 | } | |
3377 | ||
3378 | /* Update zebra. */ | |
3379 | rip_zebra_ipv4_add (rp); | |
3380 | ||
3381 | /* Set the route change flag. */ | |
3382 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
3383 | ||
3384 | /* Signal the output process to trigger an update. */ | |
3385 | rip_event (RIP_TRIGGERED_UPDATE, 0); | |
3386 | } | |
3387 | } | |
3388 | ||
3389 | DEFUN (rip_allow_ecmp, | |
3390 | rip_allow_ecmp_cmd, | |
3391 | "allow-ecmp", | |
3392 | "Allow Equal Cost MultiPath\n") | |
3393 | { | |
3394 | if (rip->ecmp) | |
3395 | { | |
3396 | vty_out (vty, "ECMP is already enabled.%s", VTY_NEWLINE); | |
3397 | return CMD_WARNING; | |
3398 | } | |
3399 | ||
3400 | rip->ecmp = 1; | |
3401 | zlog_info ("ECMP is enabled."); | |
3402 | return CMD_SUCCESS; | |
3403 | } | |
3404 | ||
3405 | DEFUN (no_rip_allow_ecmp, | |
3406 | no_rip_allow_ecmp_cmd, | |
3407 | "no allow-ecmp", | |
3408 | NO_STR | |
3409 | "Allow Equal Cost MultiPath\n") | |
3410 | { | |
3411 | if (!rip->ecmp) | |
3412 | { | |
3413 | vty_out (vty, "ECMP is already disabled.%s", VTY_NEWLINE); | |
3414 | return CMD_WARNING; | |
3415 | } | |
3416 | ||
3417 | rip->ecmp = 0; | |
3418 | zlog_info ("ECMP is disabled."); | |
3419 | rip_ecmp_disable (); | |
3420 | return CMD_SUCCESS; | |
3421 | } | |
3422 | ||
718e3744 | 3423 | /* Print out routes update time. */ |
dc63bfd4 | 3424 | static void |
718e3744 | 3425 | rip_vty_out_uptime (struct vty *vty, struct rip_info *rinfo) |
3426 | { | |
718e3744 | 3427 | time_t clock; |
3428 | struct tm *tm; | |
3429 | #define TIME_BUF 25 | |
3430 | char timebuf [TIME_BUF]; | |
3431 | struct thread *thread; | |
3432 | ||
718e3744 | 3433 | if ((thread = rinfo->t_timeout) != NULL) |
3434 | { | |
a1fdf947 | 3435 | clock = thread_timer_remain_second (thread); |
718e3744 | 3436 | tm = gmtime (&clock); |
3437 | strftime (timebuf, TIME_BUF, "%M:%S", tm); | |
3438 | vty_out (vty, "%5s", timebuf); | |
3439 | } | |
3440 | else if ((thread = rinfo->t_garbage_collect) != NULL) | |
3441 | { | |
a1fdf947 | 3442 | clock = thread_timer_remain_second (thread); |
718e3744 | 3443 | tm = gmtime (&clock); |
3444 | strftime (timebuf, TIME_BUF, "%M:%S", tm); | |
3445 | vty_out (vty, "%5s", timebuf); | |
3446 | } | |
3447 | } | |
3448 | ||
dc63bfd4 | 3449 | static const char * |
718e3744 | 3450 | rip_route_type_print (int sub_type) |
3451 | { | |
3452 | switch (sub_type) | |
3453 | { | |
3454 | case RIP_ROUTE_RTE: | |
3455 | return "n"; | |
3456 | case RIP_ROUTE_STATIC: | |
3457 | return "s"; | |
3458 | case RIP_ROUTE_DEFAULT: | |
3459 | return "d"; | |
3460 | case RIP_ROUTE_REDISTRIBUTE: | |
3461 | return "r"; | |
3462 | case RIP_ROUTE_INTERFACE: | |
3463 | return "i"; | |
3464 | default: | |
3465 | return "?"; | |
3466 | } | |
3467 | } | |
3468 | ||
3469 | DEFUN (show_ip_rip, | |
3470 | show_ip_rip_cmd, | |
3471 | "show ip rip", | |
3472 | SHOW_STR | |
3473 | IP_STR | |
3474 | "Show RIP routes\n") | |
3475 | { | |
3476 | struct route_node *np; | |
bce8e868 LF |
3477 | struct rip_info *rinfo = NULL; |
3478 | struct list *list = NULL; | |
3479 | struct listnode *listnode = NULL; | |
718e3744 | 3480 | |
3481 | if (! rip) | |
3482 | return CMD_SUCCESS; | |
3483 | ||
16705130 | 3484 | vty_out (vty, "Codes: R - RIP, C - connected, S - Static, O - OSPF, B - BGP%s" |
3485 | "Sub-codes:%s" | |
3486 | " (n) - normal, (s) - static, (d) - default, (r) - redistribute,%s" | |
718e3744 | 3487 | " (i) - interface%s%s" |
a1455d86 | 3488 | " Network Next Hop Metric From Tag Time%s", |
16705130 | 3489 | VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE); |
718e3744 | 3490 | |
3491 | for (np = route_top (rip->table); np; np = route_next (np)) | |
bce8e868 LF |
3492 | if ((list = np->info) != NULL) |
3493 | for (ALL_LIST_ELEMENTS_RO (list, listnode, rinfo)) | |
718e3744 | 3494 | { |
3495 | int len; | |
3496 | ||
f52d13cb | 3497 | len = vty_out (vty, "%c(%s) %s/%d", |
718e3744 | 3498 | /* np->lock, For debugging. */ |
f52d13cb | 3499 | zebra_route_char(rinfo->type), |
718e3744 | 3500 | rip_route_type_print (rinfo->sub_type), |
3501 | inet_ntoa (np->p.u.prefix4), np->p.prefixlen); | |
3502 | ||
a1455d86 | 3503 | len = 24 - len; |
718e3744 | 3504 | |
3505 | if (len > 0) | |
3506 | vty_out (vty, "%*s", len, " "); | |
3507 | ||
3508 | if (rinfo->nexthop.s_addr) | |
3509 | vty_out (vty, "%-20s %2d ", inet_ntoa (rinfo->nexthop), | |
3510 | rinfo->metric); | |
3511 | else | |
3512 | vty_out (vty, "0.0.0.0 %2d ", rinfo->metric); | |
3513 | ||
3514 | /* Route which exist in kernel routing table. */ | |
3515 | if ((rinfo->type == ZEBRA_ROUTE_RIP) && | |
3516 | (rinfo->sub_type == RIP_ROUTE_RTE)) | |
3517 | { | |
3518 | vty_out (vty, "%-15s ", inet_ntoa (rinfo->from)); | |
dc9ffce8 | 3519 | vty_out (vty, "%3"ROUTE_TAG_PRI" ", (route_tag_t)rinfo->tag); |
718e3744 | 3520 | rip_vty_out_uptime (vty, rinfo); |
3521 | } | |
3522 | else if (rinfo->metric == RIP_METRIC_INFINITY) | |
3523 | { | |
3524 | vty_out (vty, "self "); | |
dc9ffce8 | 3525 | vty_out (vty, "%3"ROUTE_TAG_PRI" ", (route_tag_t)rinfo->tag); |
718e3744 | 3526 | rip_vty_out_uptime (vty, rinfo); |
3527 | } | |
3528 | else | |
16705130 | 3529 | { |
fbf5d033 | 3530 | if (rinfo->external_metric) |
3531 | { | |
3532 | len = vty_out (vty, "self (%s:%d)", | |
f52d13cb | 3533 | zebra_route_string(rinfo->type), |
fbf5d033 | 3534 | rinfo->external_metric); |
3535 | len = 16 - len; | |
3536 | if (len > 0) | |
3537 | vty_out (vty, "%*s", len, " "); | |
3538 | } | |
3539 | else | |
3540 | vty_out (vty, "self "); | |
dc9ffce8 | 3541 | vty_out (vty, "%3"ROUTE_TAG_PRI, (route_tag_t)rinfo->tag); |
16705130 | 3542 | } |
718e3744 | 3543 | |
3544 | vty_out (vty, "%s", VTY_NEWLINE); | |
3545 | } | |
3546 | return CMD_SUCCESS; | |
3547 | } | |
3548 | ||
16705130 | 3549 | /* Vincent: formerly, it was show_ip_protocols_rip: "show ip protocols" */ |
3550 | DEFUN (show_ip_rip_status, | |
3551 | show_ip_rip_status_cmd, | |
3552 | "show ip rip status", | |
718e3744 | 3553 | SHOW_STR |
3554 | IP_STR | |
16705130 | 3555 | "Show RIP routes\n" |
718e3744 | 3556 | "IP routing protocol process parameters and statistics\n") |
3557 | { | |
52dc7ee6 | 3558 | struct listnode *node; |
718e3744 | 3559 | struct interface *ifp; |
3560 | struct rip_interface *ri; | |
1423c809 | 3561 | extern const struct message ri_version_msg[]; |
8a676be3 | 3562 | const char *send_version; |
3563 | const char *receive_version; | |
718e3744 | 3564 | |
3565 | if (! rip) | |
3566 | return CMD_SUCCESS; | |
3567 | ||
3568 | vty_out (vty, "Routing Protocol is \"rip\"%s", VTY_NEWLINE); | |
3569 | vty_out (vty, " Sending updates every %ld seconds with +/-50%%,", | |
3570 | rip->update_time); | |
a4c64828 AS |
3571 | vty_out (vty, " next due in %lu seconds%s", |
3572 | thread_timer_remain_second(rip->t_update), | |
718e3744 | 3573 | VTY_NEWLINE); |
3574 | vty_out (vty, " Timeout after %ld seconds,", rip->timeout_time); | |
3575 | vty_out (vty, " garbage collect after %ld seconds%s", rip->garbage_time, | |
3576 | VTY_NEWLINE); | |
3577 | ||
3578 | /* Filtering status show. */ | |
3579 | config_show_distribute (vty); | |
3580 | ||
3581 | /* Default metric information. */ | |
3582 | vty_out (vty, " Default redistribution metric is %d%s", | |
3583 | rip->default_metric, VTY_NEWLINE); | |
3584 | ||
3585 | /* Redistribute information. */ | |
3586 | vty_out (vty, " Redistributing:"); | |
3587 | config_write_rip_redistribute (vty, 0); | |
3588 | vty_out (vty, "%s", VTY_NEWLINE); | |
3589 | ||
f38a471c | 3590 | vty_out (vty, " Default version control: send version %s,", |
3591 | lookup(ri_version_msg,rip->version_send)); | |
3592 | if (rip->version_recv == RI_RIP_VERSION_1_AND_2) | |
3593 | vty_out (vty, " receive any version %s", VTY_NEWLINE); | |
3594 | else | |
3595 | vty_out (vty, " receive version %s %s", | |
3596 | lookup(ri_version_msg,rip->version_recv), VTY_NEWLINE); | |
718e3744 | 3597 | |
3598 | vty_out (vty, " Interface Send Recv Key-chain%s", VTY_NEWLINE); | |
3599 | ||
b2d7c082 | 3600 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), node, ifp)) |
718e3744 | 3601 | { |
718e3744 | 3602 | ri = ifp->info; |
3603 | ||
82f5ee1e SH |
3604 | if (!ri->running) |
3605 | continue; | |
3606 | ||
718e3744 | 3607 | if (ri->enable_network || ri->enable_interface) |
3608 | { | |
3609 | if (ri->ri_send == RI_RIP_UNSPEC) | |
f38a471c | 3610 | send_version = lookup (ri_version_msg, rip->version_send); |
718e3744 | 3611 | else |
3612 | send_version = lookup (ri_version_msg, ri->ri_send); | |
3613 | ||
3614 | if (ri->ri_receive == RI_RIP_UNSPEC) | |
f38a471c | 3615 | receive_version = lookup (ri_version_msg, rip->version_recv); |
718e3744 | 3616 | else |
3617 | receive_version = lookup (ri_version_msg, ri->ri_receive); | |
3618 | ||
3619 | vty_out (vty, " %-17s%-3s %-3s %s%s", ifp->name, | |
3620 | send_version, | |
3621 | receive_version, | |
3622 | ri->key_chain ? ri->key_chain : "", | |
3623 | VTY_NEWLINE); | |
3624 | } | |
3625 | } | |
3626 | ||
3627 | vty_out (vty, " Routing for Networks:%s", VTY_NEWLINE); | |
3628 | config_write_rip_network (vty, 0); | |
3629 | ||
4aaff3f8 | 3630 | { |
3631 | int found_passive = 0; | |
b2d7c082 | 3632 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), node, ifp)) |
4aaff3f8 | 3633 | { |
4aaff3f8 | 3634 | ri = ifp->info; |
3635 | ||
3636 | if ((ri->enable_network || ri->enable_interface) && ri->passive) | |
3637 | { | |
3638 | if (!found_passive) | |
3639 | { | |
3640 | vty_out (vty, " Passive Interface(s):%s", VTY_NEWLINE); | |
3641 | found_passive = 1; | |
3642 | } | |
3643 | vty_out (vty, " %s%s", ifp->name, VTY_NEWLINE); | |
3644 | } | |
3645 | } | |
3646 | } | |
3647 | ||
718e3744 | 3648 | vty_out (vty, " Routing Information Sources:%s", VTY_NEWLINE); |
3649 | vty_out (vty, " Gateway BadPackets BadRoutes Distance Last Update%s", VTY_NEWLINE); | |
3650 | rip_peer_display (vty); | |
3651 | ||
3652 | rip_distance_show (vty); | |
3653 | ||
3654 | return CMD_SUCCESS; | |
3655 | } | |
3656 | ||
3657 | /* RIP configuration write function. */ | |
dc63bfd4 | 3658 | static int |
718e3744 | 3659 | config_write_rip (struct vty *vty) |
3660 | { | |
3661 | int write = 0; | |
3662 | struct route_node *rn; | |
3663 | struct rip_distance *rdistance; | |
3664 | ||
3665 | if (rip) | |
3666 | { | |
3667 | /* Router RIP statement. */ | |
3668 | vty_out (vty, "router rip%s", VTY_NEWLINE); | |
3669 | write++; | |
3670 | ||
3671 | /* RIP version statement. Default is RIP version 2. */ | |
f38a471c | 3672 | if (rip->version_send != RI_RIP_VERSION_2 |
3673 | || rip->version_recv != RI_RIP_VERSION_1_AND_2) | |
3674 | vty_out (vty, " version %d%s", rip->version_send, | |
718e3744 | 3675 | VTY_NEWLINE); |
3676 | ||
3677 | /* RIP timer configuration. */ | |
3678 | if (rip->update_time != RIP_UPDATE_TIMER_DEFAULT | |
3679 | || rip->timeout_time != RIP_TIMEOUT_TIMER_DEFAULT | |
3680 | || rip->garbage_time != RIP_GARBAGE_TIMER_DEFAULT) | |
3681 | vty_out (vty, " timers basic %lu %lu %lu%s", | |
3682 | rip->update_time, | |
3683 | rip->timeout_time, | |
3684 | rip->garbage_time, | |
3685 | VTY_NEWLINE); | |
3686 | ||
3687 | /* Default information configuration. */ | |
3688 | if (rip->default_information) | |
3689 | { | |
3690 | if (rip->default_information_route_map) | |
3691 | vty_out (vty, " default-information originate route-map %s%s", | |
3692 | rip->default_information_route_map, VTY_NEWLINE); | |
3693 | else | |
3694 | vty_out (vty, " default-information originate%s", | |
3695 | VTY_NEWLINE); | |
3696 | } | |
3697 | ||
3698 | /* Redistribute configuration. */ | |
3699 | config_write_rip_redistribute (vty, 1); | |
3700 | ||
3701 | /* RIP offset-list configuration. */ | |
3702 | config_write_rip_offset_list (vty); | |
3703 | ||
3704 | /* RIP enabled network and interface configuration. */ | |
3705 | config_write_rip_network (vty, 1); | |
3706 | ||
3707 | /* RIP default metric configuration */ | |
3708 | if (rip->default_metric != RIP_DEFAULT_METRIC_DEFAULT) | |
3709 | vty_out (vty, " default-metric %d%s", | |
3710 | rip->default_metric, VTY_NEWLINE); | |
3711 | ||
3712 | /* Distribute configuration. */ | |
3713 | write += config_write_distribute (vty); | |
3714 | ||
16705130 | 3715 | /* Interface routemap configuration */ |
3716 | write += config_write_if_rmap (vty); | |
3717 | ||
718e3744 | 3718 | /* Distance configuration. */ |
3719 | if (rip->distance) | |
3720 | vty_out (vty, " distance %d%s", rip->distance, VTY_NEWLINE); | |
3721 | ||
3722 | /* RIP source IP prefix distance configuration. */ | |
3723 | for (rn = route_top (rip_distance_table); rn; rn = route_next (rn)) | |
3724 | if ((rdistance = rn->info) != NULL) | |
3725 | vty_out (vty, " distance %d %s/%d %s%s", rdistance->distance, | |
3726 | inet_ntoa (rn->p.u.prefix4), rn->p.prefixlen, | |
3727 | rdistance->access_list ? rdistance->access_list : "", | |
3728 | VTY_NEWLINE); | |
3729 | ||
8478ae7e LF |
3730 | /* ECMP configuration. */ |
3731 | if (rip->ecmp) | |
3732 | vty_out (vty, " allow-ecmp%s", VTY_NEWLINE); | |
3733 | ||
718e3744 | 3734 | /* RIP static route configuration. */ |
3735 | for (rn = route_top (rip->route); rn; rn = route_next (rn)) | |
3736 | if (rn->info) | |
3737 | vty_out (vty, " route %s/%d%s", | |
3738 | inet_ntoa (rn->p.u.prefix4), | |
3739 | rn->p.prefixlen, | |
3740 | VTY_NEWLINE); | |
3741 | ||
3742 | } | |
3743 | return write; | |
3744 | } | |
3745 | ||
3746 | /* RIP node structure. */ | |
7fc626de | 3747 | static struct cmd_node rip_node = |
718e3744 | 3748 | { |
3749 | RIP_NODE, | |
3750 | "%s(config-router)# ", | |
3751 | 1 | |
3752 | }; | |
6b0655a2 | 3753 | |
718e3744 | 3754 | /* Distribute-list update functions. */ |
dc63bfd4 | 3755 | static void |
718e3744 | 3756 | rip_distribute_update (struct distribute *dist) |
3757 | { | |
3758 | struct interface *ifp; | |
3759 | struct rip_interface *ri; | |
3760 | struct access_list *alist; | |
3761 | struct prefix_list *plist; | |
3762 | ||
3763 | if (! dist->ifname) | |
3764 | return; | |
3765 | ||
1306c09a | 3766 | ifp = if_lookup_by_name (dist->ifname, VRF_DEFAULT); |
718e3744 | 3767 | if (ifp == NULL) |
3768 | return; | |
3769 | ||
3770 | ri = ifp->info; | |
3771 | ||
fb23cf4a | 3772 | if (dist->list[DISTRIBUTE_V4_IN]) |
718e3744 | 3773 | { |
fb23cf4a | 3774 | alist = access_list_lookup (AFI_IP, dist->list[DISTRIBUTE_V4_IN]); |
718e3744 | 3775 | if (alist) |
3776 | ri->list[RIP_FILTER_IN] = alist; | |
3777 | else | |
3778 | ri->list[RIP_FILTER_IN] = NULL; | |
3779 | } | |
3780 | else | |
3781 | ri->list[RIP_FILTER_IN] = NULL; | |
3782 | ||
fb23cf4a | 3783 | if (dist->list[DISTRIBUTE_V4_OUT]) |
718e3744 | 3784 | { |
fb23cf4a | 3785 | alist = access_list_lookup (AFI_IP, dist->list[DISTRIBUTE_V4_OUT]); |
718e3744 | 3786 | if (alist) |
3787 | ri->list[RIP_FILTER_OUT] = alist; | |
3788 | else | |
3789 | ri->list[RIP_FILTER_OUT] = NULL; | |
3790 | } | |
3791 | else | |
3792 | ri->list[RIP_FILTER_OUT] = NULL; | |
3793 | ||
fb23cf4a | 3794 | if (dist->prefix[DISTRIBUTE_V4_IN]) |
718e3744 | 3795 | { |
fb23cf4a | 3796 | plist = prefix_list_lookup (AFI_IP, dist->prefix[DISTRIBUTE_V4_IN]); |
718e3744 | 3797 | if (plist) |
3798 | ri->prefix[RIP_FILTER_IN] = plist; | |
3799 | else | |
3800 | ri->prefix[RIP_FILTER_IN] = NULL; | |
3801 | } | |
3802 | else | |
3803 | ri->prefix[RIP_FILTER_IN] = NULL; | |
3804 | ||
fb23cf4a | 3805 | if (dist->prefix[DISTRIBUTE_V4_OUT]) |
718e3744 | 3806 | { |
fb23cf4a | 3807 | plist = prefix_list_lookup (AFI_IP, dist->prefix[DISTRIBUTE_V4_OUT]); |
718e3744 | 3808 | if (plist) |
3809 | ri->prefix[RIP_FILTER_OUT] = plist; | |
3810 | else | |
3811 | ri->prefix[RIP_FILTER_OUT] = NULL; | |
3812 | } | |
3813 | else | |
3814 | ri->prefix[RIP_FILTER_OUT] = NULL; | |
3815 | } | |
3816 | ||
3817 | void | |
3818 | rip_distribute_update_interface (struct interface *ifp) | |
3819 | { | |
3820 | struct distribute *dist; | |
3821 | ||
3822 | dist = distribute_lookup (ifp->name); | |
3823 | if (dist) | |
3824 | rip_distribute_update (dist); | |
3825 | } | |
3826 | ||
3827 | /* Update all interface's distribute list. */ | |
02ff83c5 | 3828 | /* ARGSUSED */ |
dc63bfd4 | 3829 | static void |
02ff83c5 | 3830 | rip_distribute_update_all (struct prefix_list *notused) |
718e3744 | 3831 | { |
3832 | struct interface *ifp; | |
1eb8ef25 | 3833 | struct listnode *node, *nnode; |
718e3744 | 3834 | |
b2d7c082 | 3835 | for (ALL_LIST_ELEMENTS (vrf_iflist (VRF_DEFAULT), node, nnode, ifp)) |
1eb8ef25 | 3836 | rip_distribute_update_interface (ifp); |
718e3744 | 3837 | } |
11dde9c2 | 3838 | /* ARGSUSED */ |
dc63bfd4 | 3839 | static void |
11dde9c2 | 3840 | rip_distribute_update_all_wrapper(struct access_list *notused) |
3841 | { | |
02ff83c5 | 3842 | rip_distribute_update_all(NULL); |
11dde9c2 | 3843 | } |
6b0655a2 | 3844 | |
718e3744 | 3845 | /* Delete all added rip route. */ |
3846 | void | |
216565ab | 3847 | rip_clean (void) |
718e3744 | 3848 | { |
3849 | int i; | |
3850 | struct route_node *rp; | |
bce8e868 LF |
3851 | struct rip_info *rinfo = NULL; |
3852 | struct list *list = NULL; | |
3853 | struct listnode *listnode = NULL; | |
718e3744 | 3854 | |
3855 | if (rip) | |
3856 | { | |
f6eacff4 DL |
3857 | QOBJ_UNREG (rip); |
3858 | ||
718e3744 | 3859 | /* Clear RIP routes */ |
3860 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) | |
bce8e868 LF |
3861 | if ((list = rp->info) != NULL) |
3862 | { | |
3863 | rinfo = listgetdata (listhead (list)); | |
3864 | if (rip_route_rte (rinfo)) | |
3865 | rip_zebra_ipv4_delete (rp); | |
3866 | ||
3867 | for (ALL_LIST_ELEMENTS_RO (list, listnode, rinfo)) | |
3868 | { | |
3869 | RIP_TIMER_OFF (rinfo->t_timeout); | |
3870 | RIP_TIMER_OFF (rinfo->t_garbage_collect); | |
3871 | rip_info_free (rinfo); | |
3872 | } | |
3873 | list_delete (list); | |
3874 | rp->info = NULL; | |
3875 | route_unlock_node (rp); | |
3876 | } | |
718e3744 | 3877 | |
3878 | /* Cancel RIP related timers. */ | |
3879 | RIP_TIMER_OFF (rip->t_update); | |
3880 | RIP_TIMER_OFF (rip->t_triggered_update); | |
3881 | RIP_TIMER_OFF (rip->t_triggered_interval); | |
3882 | ||
3883 | /* Cancel read thread. */ | |
8578874d | 3884 | THREAD_READ_OFF (rip->t_read); |
718e3744 | 3885 | |
3886 | /* Close RIP socket. */ | |
3887 | if (rip->sock >= 0) | |
3888 | { | |
3889 | close (rip->sock); | |
3890 | rip->sock = -1; | |
3891 | } | |
3892 | ||
3893 | /* Static RIP route configuration. */ | |
3894 | for (rp = route_top (rip->route); rp; rp = route_next (rp)) | |
3895 | if (rp->info) | |
3896 | { | |
3897 | rp->info = NULL; | |
3898 | route_unlock_node (rp); | |
3899 | } | |
3900 | ||
3901 | /* RIP neighbor configuration. */ | |
3902 | for (rp = route_top (rip->neighbor); rp; rp = route_next (rp)) | |
3903 | if (rp->info) | |
3904 | { | |
3905 | rp->info = NULL; | |
3906 | route_unlock_node (rp); | |
3907 | } | |
3908 | ||
3909 | /* Redistribute related clear. */ | |
3910 | if (rip->default_information_route_map) | |
3911 | free (rip->default_information_route_map); | |
3912 | ||
3913 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
3914 | if (rip->route_map[i].name) | |
3915 | free (rip->route_map[i].name); | |
3916 | ||
3917 | XFREE (MTYPE_ROUTE_TABLE, rip->table); | |
3918 | XFREE (MTYPE_ROUTE_TABLE, rip->route); | |
3919 | XFREE (MTYPE_ROUTE_TABLE, rip->neighbor); | |
3920 | ||
3921 | XFREE (MTYPE_RIP, rip); | |
3922 | rip = NULL; | |
3923 | } | |
3924 | ||
3925 | rip_clean_network (); | |
4aaff3f8 | 3926 | rip_passive_nondefault_clean (); |
718e3744 | 3927 | rip_offset_clean (); |
1dec2166 | 3928 | rip_interfaces_clean (); |
718e3744 | 3929 | rip_distance_reset (); |
3930 | rip_redistribute_clean (); | |
3931 | } | |
3932 | ||
3933 | /* Reset all values to the default settings. */ | |
3934 | void | |
216565ab | 3935 | rip_reset (void) |
718e3744 | 3936 | { |
3937 | /* Reset global counters. */ | |
3938 | rip_global_route_changes = 0; | |
3939 | rip_global_queries = 0; | |
3940 | ||
3941 | /* Call ripd related reset functions. */ | |
3942 | rip_debug_reset (); | |
3943 | rip_route_map_reset (); | |
3944 | ||
3945 | /* Call library reset functions. */ | |
3946 | vty_reset (); | |
3947 | access_list_reset (); | |
3948 | prefix_list_reset (); | |
3949 | ||
3950 | distribute_list_reset (); | |
3951 | ||
1dec2166 | 3952 | rip_interfaces_reset (); |
718e3744 | 3953 | rip_distance_reset (); |
3954 | ||
3955 | rip_zclient_reset (); | |
3956 | } | |
3957 | ||
dc63bfd4 | 3958 | static void |
16705130 | 3959 | rip_if_rmap_update (struct if_rmap *if_rmap) |
3960 | { | |
3961 | struct interface *ifp; | |
3962 | struct rip_interface *ri; | |
3963 | struct route_map *rmap; | |
3964 | ||
1306c09a | 3965 | ifp = if_lookup_by_name (if_rmap->ifname, VRF_DEFAULT); |
16705130 | 3966 | if (ifp == NULL) |
3967 | return; | |
3968 | ||
3969 | ri = ifp->info; | |
3970 | ||
3971 | if (if_rmap->routemap[IF_RMAP_IN]) | |
3972 | { | |
3973 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_IN]); | |
3974 | if (rmap) | |
3975 | ri->routemap[IF_RMAP_IN] = rmap; | |
3976 | else | |
3977 | ri->routemap[IF_RMAP_IN] = NULL; | |
3978 | } | |
3979 | else | |
3980 | ri->routemap[RIP_FILTER_IN] = NULL; | |
3981 | ||
3982 | if (if_rmap->routemap[IF_RMAP_OUT]) | |
3983 | { | |
3984 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_OUT]); | |
3985 | if (rmap) | |
3986 | ri->routemap[IF_RMAP_OUT] = rmap; | |
3987 | else | |
3988 | ri->routemap[IF_RMAP_OUT] = NULL; | |
3989 | } | |
3990 | else | |
3991 | ri->routemap[RIP_FILTER_OUT] = NULL; | |
3992 | } | |
3993 | ||
3994 | void | |
3995 | rip_if_rmap_update_interface (struct interface *ifp) | |
3996 | { | |
3997 | struct if_rmap *if_rmap; | |
3998 | ||
3999 | if_rmap = if_rmap_lookup (ifp->name); | |
4000 | if (if_rmap) | |
4001 | rip_if_rmap_update (if_rmap); | |
4002 | } | |
4003 | ||
dc63bfd4 | 4004 | static void |
16705130 | 4005 | rip_routemap_update_redistribute (void) |
4006 | { | |
4007 | int i; | |
4008 | ||
4009 | if (rip) | |
4010 | { | |
4011 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
4012 | { | |
4013 | if (rip->route_map[i].name) | |
4014 | rip->route_map[i].map = | |
4015 | route_map_lookup_by_name (rip->route_map[i].name); | |
4016 | } | |
4017 | } | |
4018 | } | |
4019 | ||
11dde9c2 | 4020 | /* ARGSUSED */ |
dc63bfd4 | 4021 | static void |
98b718a9 | 4022 | rip_routemap_update (const char *notused) |
16705130 | 4023 | { |
4024 | struct interface *ifp; | |
1eb8ef25 | 4025 | struct listnode *node, *nnode; |
16705130 | 4026 | |
b2d7c082 | 4027 | for (ALL_LIST_ELEMENTS (vrf_iflist (VRF_DEFAULT), node, nnode, ifp)) |
1eb8ef25 | 4028 | rip_if_rmap_update_interface (ifp); |
16705130 | 4029 | |
4030 | rip_routemap_update_redistribute (); | |
4031 | } | |
4032 | ||
718e3744 | 4033 | /* Allocate new rip structure and set default value. */ |
4034 | void | |
dc63bfd4 | 4035 | rip_init (void) |
718e3744 | 4036 | { |
718e3744 | 4037 | /* Install top nodes. */ |
4038 | install_node (&rip_node, config_write_rip); | |
4039 | ||
4040 | /* Install rip commands. */ | |
4041 | install_element (VIEW_NODE, &show_ip_rip_cmd); | |
16705130 | 4042 | install_element (VIEW_NODE, &show_ip_rip_status_cmd); |
718e3744 | 4043 | install_element (CONFIG_NODE, &router_rip_cmd); |
4044 | install_element (CONFIG_NODE, &no_router_rip_cmd); | |
4045 | ||
4046 | install_default (RIP_NODE); | |
4047 | install_element (RIP_NODE, &rip_version_cmd); | |
4048 | install_element (RIP_NODE, &no_rip_version_cmd); | |
718e3744 | 4049 | install_element (RIP_NODE, &rip_default_metric_cmd); |
4050 | install_element (RIP_NODE, &no_rip_default_metric_cmd); | |
718e3744 | 4051 | install_element (RIP_NODE, &rip_timers_cmd); |
4052 | install_element (RIP_NODE, &no_rip_timers_cmd); | |
4053 | install_element (RIP_NODE, &rip_route_cmd); | |
4054 | install_element (RIP_NODE, &no_rip_route_cmd); | |
4055 | install_element (RIP_NODE, &rip_distance_cmd); | |
4056 | install_element (RIP_NODE, &no_rip_distance_cmd); | |
4057 | install_element (RIP_NODE, &rip_distance_source_cmd); | |
4058 | install_element (RIP_NODE, &no_rip_distance_source_cmd); | |
4059 | install_element (RIP_NODE, &rip_distance_source_access_list_cmd); | |
4060 | install_element (RIP_NODE, &no_rip_distance_source_access_list_cmd); | |
8478ae7e LF |
4061 | install_element (RIP_NODE, &rip_allow_ecmp_cmd); |
4062 | install_element (RIP_NODE, &no_rip_allow_ecmp_cmd); | |
718e3744 | 4063 | |
4064 | /* Debug related init. */ | |
4065 | rip_debug_init (); | |
4066 | ||
718e3744 | 4067 | /* SNMP init. */ |
4068 | #ifdef HAVE_SNMP | |
4069 | rip_snmp_init (); | |
4070 | #endif /* HAVE_SNMP */ | |
4071 | ||
4072 | /* Access list install. */ | |
4073 | access_list_init (); | |
11dde9c2 | 4074 | access_list_add_hook (rip_distribute_update_all_wrapper); |
4075 | access_list_delete_hook (rip_distribute_update_all_wrapper); | |
718e3744 | 4076 | |
4077 | /* Prefix list initialize.*/ | |
4078 | prefix_list_init (); | |
4079 | prefix_list_add_hook (rip_distribute_update_all); | |
4080 | prefix_list_delete_hook (rip_distribute_update_all); | |
4081 | ||
4082 | /* Distribute list install. */ | |
4083 | distribute_list_init (RIP_NODE); | |
4084 | distribute_list_add_hook (rip_distribute_update); | |
4085 | distribute_list_delete_hook (rip_distribute_update); | |
4086 | ||
16705130 | 4087 | /* Route-map */ |
4088 | rip_route_map_init (); | |
4089 | rip_offset_init (); | |
4090 | ||
4091 | route_map_add_hook (rip_routemap_update); | |
4092 | route_map_delete_hook (rip_routemap_update); | |
4093 | ||
4094 | if_rmap_init (RIP_NODE); | |
4095 | if_rmap_hook_add (rip_if_rmap_update); | |
4096 | if_rmap_hook_delete (rip_if_rmap_update); | |
4097 | ||
718e3744 | 4098 | /* Distance control. */ |
4099 | rip_distance_table = route_table_init (); | |
4100 | } |