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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 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
b2d7c082 | 24 | #include "vrf.h" |
718e3744 | 25 | #include "if.h" |
26 | #include "command.h" | |
27 | #include "prefix.h" | |
28 | #include "table.h" | |
29 | #include "thread.h" | |
30 | #include "memory.h" | |
31 | #include "log.h" | |
32 | #include "stream.h" | |
33 | #include "filter.h" | |
34 | #include "sockunion.h" | |
1af81933 | 35 | #include "sockopt.h" |
718e3744 | 36 | #include "routemap.h" |
16705130 | 37 | #include "if_rmap.h" |
718e3744 | 38 | #include "plist.h" |
39 | #include "distribute.h" | |
c1a03d47 | 40 | #include "md5.h" |
718e3744 | 41 | #include "keychain.h" |
edd7c245 | 42 | #include "privs.h" |
718e3744 | 43 | |
44 | #include "ripd/ripd.h" | |
45 | #include "ripd/rip_debug.h" | |
46 | ||
f6eacff4 DL |
47 | DEFINE_QOBJ_TYPE(rip) |
48 | ||
0b3acf4f | 49 | /* UDP receive buffer size */ |
50 | #define RIP_UDP_RCV_BUF 41600 | |
51 | ||
52 | /* privileges global */ | |
edd7c245 | 53 | extern struct zebra_privs_t ripd_privs; |
54 | ||
718e3744 | 55 | /* RIP Structure. */ |
56 | struct rip *rip = NULL; | |
57 | ||
58 | /* RIP neighbor address table. */ | |
59 | struct route_table *rip_neighbor_table; | |
60 | ||
61 | /* RIP route changes. */ | |
62 | long rip_global_route_changes = 0; | |
63 | ||
64 | /* RIP queries. */ | |
65 | long rip_global_queries = 0; | |
6b0655a2 | 66 | |
718e3744 | 67 | /* Prototypes. */ |
dc63bfd4 | 68 | static void rip_event (enum rip_event, int); |
69 | static void rip_output_process (struct connected *, struct sockaddr_in *, int, u_char); | |
70 | static int rip_triggered_update (struct thread *); | |
71 | static int rip_update_jitter (unsigned long); | |
6b0655a2 | 72 | |
718e3744 | 73 | /* RIP output routes type. */ |
74 | enum | |
75 | { | |
76 | rip_all_route, | |
77 | rip_changed_route | |
78 | }; | |
6b0655a2 | 79 | |
718e3744 | 80 | /* RIP command strings. */ |
1423c809 | 81 | static const struct message rip_msg[] = |
718e3744 | 82 | { |
83 | {RIP_REQUEST, "REQUEST"}, | |
84 | {RIP_RESPONSE, "RESPONSE"}, | |
85 | {RIP_TRACEON, "TRACEON"}, | |
86 | {RIP_TRACEOFF, "TRACEOFF"}, | |
87 | {RIP_POLL, "POLL"}, | |
88 | {RIP_POLL_ENTRY, "POLL ENTRY"}, | |
56b40679 | 89 | { 0 } |
718e3744 | 90 | }; |
6b0655a2 | 91 | |
718e3744 | 92 | /* Utility function to set boradcast option to the socket. */ |
dc63bfd4 | 93 | static int |
718e3744 | 94 | sockopt_broadcast (int sock) |
95 | { | |
96 | int ret; | |
97 | int on = 1; | |
98 | ||
99 | ret = setsockopt (sock, SOL_SOCKET, SO_BROADCAST, (char *) &on, sizeof on); | |
100 | if (ret < 0) | |
101 | { | |
102 | zlog_warn ("can't set sockopt SO_BROADCAST to socket %d", sock); | |
103 | return -1; | |
104 | } | |
105 | return 0; | |
106 | } | |
107 | ||
dc63bfd4 | 108 | static int |
718e3744 | 109 | rip_route_rte (struct rip_info *rinfo) |
110 | { | |
111 | return (rinfo->type == ZEBRA_ROUTE_RIP && rinfo->sub_type == RIP_ROUTE_RTE); | |
112 | } | |
113 | ||
dc63bfd4 | 114 | static struct rip_info * |
393deb9b | 115 | rip_info_new (void) |
718e3744 | 116 | { |
393deb9b | 117 | return XCALLOC (MTYPE_RIP_INFO, sizeof (struct rip_info)); |
718e3744 | 118 | } |
119 | ||
120 | void | |
121 | rip_info_free (struct rip_info *rinfo) | |
122 | { | |
123 | XFREE (MTYPE_RIP_INFO, rinfo); | |
124 | } | |
125 | ||
126 | /* RIP route garbage collect timer. */ | |
dc63bfd4 | 127 | static int |
718e3744 | 128 | rip_garbage_collect (struct thread *t) |
129 | { | |
130 | struct rip_info *rinfo; | |
131 | struct route_node *rp; | |
132 | ||
133 | rinfo = THREAD_ARG (t); | |
134 | rinfo->t_garbage_collect = NULL; | |
135 | ||
136 | /* Off timeout timer. */ | |
137 | RIP_TIMER_OFF (rinfo->t_timeout); | |
138 | ||
139 | /* Get route_node pointer. */ | |
140 | rp = rinfo->rp; | |
141 | ||
142 | /* Unlock route_node. */ | |
bce8e868 LF |
143 | listnode_delete (rp->info, rinfo); |
144 | if (list_isempty ((struct list *)rp->info)) | |
145 | { | |
146 | list_free (rp->info); | |
147 | rp->info = NULL; | |
148 | route_unlock_node (rp); | |
149 | } | |
718e3744 | 150 | |
151 | /* Free RIP routing information. */ | |
152 | rip_info_free (rinfo); | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
bce8e868 LF |
157 | static void rip_timeout_update (struct rip_info *rinfo); |
158 | ||
159 | /* Add new route to the ECMP list. | |
8478ae7e LF |
160 | * RETURN: the new entry added in the list, or NULL if it is not the first |
161 | * entry and ECMP is not allowed. | |
bce8e868 LF |
162 | */ |
163 | struct rip_info * | |
164 | rip_ecmp_add (struct rip_info *rinfo_new) | |
718e3744 | 165 | { |
bce8e868 LF |
166 | struct route_node *rp = rinfo_new->rp; |
167 | struct rip_info *rinfo = NULL; | |
168 | struct list *list = NULL; | |
718e3744 | 169 | |
bce8e868 LF |
170 | if (rp->info == NULL) |
171 | rp->info = list_new (); | |
172 | list = (struct list *)rp->info; | |
173 | ||
8478ae7e LF |
174 | /* If ECMP is not allowed and some entry already exists in the list, |
175 | * do nothing. */ | |
176 | if (listcount (list) && !rip->ecmp) | |
177 | return NULL; | |
178 | ||
bce8e868 LF |
179 | rinfo = rip_info_new (); |
180 | memcpy (rinfo, rinfo_new, sizeof (struct rip_info)); | |
181 | listnode_add (list, rinfo); | |
182 | ||
183 | if (rip_route_rte (rinfo)) | |
184 | { | |
185 | rip_timeout_update (rinfo); | |
186 | rip_zebra_ipv4_add (rp); | |
187 | } | |
188 | ||
189 | /* Set the route change flag on the first entry. */ | |
190 | rinfo = listgetdata (listhead (list)); | |
191 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
192 | ||
193 | /* Signal the output process to trigger an update (see section 2.5). */ | |
194 | rip_event (RIP_TRIGGERED_UPDATE, 0); | |
718e3744 | 195 | |
bce8e868 LF |
196 | return rinfo; |
197 | } | |
198 | ||
199 | /* Replace the ECMP list with the new route. | |
200 | * RETURN: the new entry added in the list | |
201 | */ | |
202 | struct rip_info * | |
203 | rip_ecmp_replace (struct rip_info *rinfo_new) | |
204 | { | |
205 | struct route_node *rp = rinfo_new->rp; | |
206 | struct list *list = (struct list *)rp->info; | |
207 | struct rip_info *rinfo = NULL, *tmp_rinfo = NULL; | |
208 | struct listnode *node = NULL, *nextnode = NULL; | |
209 | ||
210 | if (list == NULL || listcount (list) == 0) | |
211 | return rip_ecmp_add (rinfo_new); | |
212 | ||
213 | /* Get the first entry */ | |
214 | rinfo = listgetdata (listhead (list)); | |
215 | ||
216 | /* Learnt route replaced by a local one. Delete it from zebra. */ | |
217 | if (rip_route_rte (rinfo) && !rip_route_rte (rinfo_new)) | |
218 | if (CHECK_FLAG (rinfo->flags, RIP_RTF_FIB)) | |
219 | rip_zebra_ipv4_delete (rp); | |
220 | ||
221 | /* Re-use the first entry, and delete the others. */ | |
222 | for (ALL_LIST_ELEMENTS (list, node, nextnode, tmp_rinfo)) | |
223 | if (tmp_rinfo != rinfo) | |
224 | { | |
225 | RIP_TIMER_OFF (tmp_rinfo->t_timeout); | |
226 | RIP_TIMER_OFF (tmp_rinfo->t_garbage_collect); | |
227 | list_delete_node (list, node); | |
228 | rip_info_free (tmp_rinfo); | |
229 | } | |
718e3744 | 230 | |
bce8e868 LF |
231 | RIP_TIMER_OFF (rinfo->t_timeout); |
232 | RIP_TIMER_OFF (rinfo->t_garbage_collect); | |
233 | memcpy (rinfo, rinfo_new, sizeof (struct rip_info)); | |
718e3744 | 234 | |
bce8e868 LF |
235 | if (rip_route_rte (rinfo)) |
236 | { | |
237 | rip_timeout_update (rinfo); | |
238 | /* The ADD message implies an update. */ | |
239 | rip_zebra_ipv4_add (rp); | |
240 | } | |
718e3744 | 241 | |
bce8e868 LF |
242 | /* Set the route change flag. */ |
243 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
718e3744 | 244 | |
bce8e868 | 245 | /* Signal the output process to trigger an update (see section 2.5). */ |
718e3744 | 246 | rip_event (RIP_TRIGGERED_UPDATE, 0); |
247 | ||
bce8e868 LF |
248 | return rinfo; |
249 | } | |
250 | ||
251 | /* Delete one route from the ECMP list. | |
252 | * RETURN: | |
253 | * null - the entry is freed, and other entries exist in the list | |
254 | * the entry - the entry is the last one in the list; its metric is set | |
255 | * to INFINITY, and the garbage collector is started for it | |
256 | */ | |
257 | struct rip_info * | |
258 | rip_ecmp_delete (struct rip_info *rinfo) | |
259 | { | |
260 | struct route_node *rp = rinfo->rp; | |
261 | struct list *list = (struct list *)rp->info; | |
262 | ||
263 | RIP_TIMER_OFF (rinfo->t_timeout); | |
264 | ||
265 | if (listcount (list) > 1) | |
266 | { | |
267 | /* Some other ECMP entries still exist. Just delete this entry. */ | |
268 | RIP_TIMER_OFF (rinfo->t_garbage_collect); | |
269 | listnode_delete (list, rinfo); | |
270 | if (rip_route_rte (rinfo) && CHECK_FLAG (rinfo->flags, RIP_RTF_FIB)) | |
271 | /* The ADD message implies the update. */ | |
272 | rip_zebra_ipv4_add (rp); | |
273 | rip_info_free (rinfo); | |
274 | rinfo = NULL; | |
275 | } | |
276 | else | |
277 | { | |
278 | assert (rinfo == listgetdata (listhead (list))); | |
279 | ||
280 | /* This is the only entry left in the list. We must keep it in | |
281 | * the list for garbage collection time, with INFINITY metric. */ | |
282 | ||
283 | rinfo->metric = RIP_METRIC_INFINITY; | |
284 | RIP_TIMER_ON (rinfo->t_garbage_collect, | |
285 | rip_garbage_collect, rip->garbage_time); | |
286 | ||
287 | if (rip_route_rte (rinfo) && CHECK_FLAG (rinfo->flags, RIP_RTF_FIB)) | |
288 | rip_zebra_ipv4_delete (rp); | |
289 | } | |
290 | ||
291 | /* Set the route change flag on the first entry. */ | |
292 | rinfo = listgetdata (listhead (list)); | |
293 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
294 | ||
295 | /* Signal the output process to trigger an update (see section 2.5). */ | |
296 | rip_event (RIP_TRIGGERED_UPDATE, 0); | |
297 | ||
298 | return rinfo; | |
299 | } | |
300 | ||
301 | /* Timeout RIP routes. */ | |
302 | static int | |
303 | rip_timeout (struct thread *t) | |
304 | { | |
305 | rip_ecmp_delete ((struct rip_info *)THREAD_ARG (t)); | |
718e3744 | 306 | return 0; |
307 | } | |
308 | ||
dc63bfd4 | 309 | static void |
718e3744 | 310 | rip_timeout_update (struct rip_info *rinfo) |
311 | { | |
312 | if (rinfo->metric != RIP_METRIC_INFINITY) | |
313 | { | |
314 | RIP_TIMER_OFF (rinfo->t_timeout); | |
315 | RIP_TIMER_ON (rinfo->t_timeout, rip_timeout, rip->timeout_time); | |
316 | } | |
317 | } | |
318 | ||
dc63bfd4 | 319 | static int |
7c989d74 | 320 | rip_filter (int rip_distribute, struct prefix_ipv4 *p, struct rip_interface *ri) |
718e3744 | 321 | { |
322 | struct distribute *dist; | |
323 | struct access_list *alist; | |
324 | struct prefix_list *plist; | |
7c989d74 | 325 | int distribute = rip_distribute == RIP_FILTER_OUT ? |
fb23cf4a | 326 | DISTRIBUTE_V4_OUT : DISTRIBUTE_V4_IN; |
7c989d74 | 327 | const char *inout = rip_distribute == RIP_FILTER_OUT ? "out" : "in"; |
718e3744 | 328 | |
329 | /* Input distribute-list filtering. */ | |
7c989d74 | 330 | if (ri->list[rip_distribute]) |
718e3744 | 331 | { |
7c989d74 | 332 | if (access_list_apply (ri->list[rip_distribute], |
718e3744 | 333 | (struct prefix *) p) == FILTER_DENY) |
334 | { | |
335 | if (IS_RIP_DEBUG_PACKET) | |
7c989d74 MB |
336 | zlog_debug ("%s/%d filtered by distribute %s", |
337 | inet_ntoa (p->prefix), p->prefixlen, inout); | |
718e3744 | 338 | return -1; |
339 | } | |
340 | } | |
7c989d74 | 341 | if (ri->prefix[rip_distribute]) |
718e3744 | 342 | { |
7c989d74 | 343 | if (prefix_list_apply (ri->prefix[rip_distribute], |
718e3744 | 344 | (struct prefix *) p) == PREFIX_DENY) |
345 | { | |
346 | if (IS_RIP_DEBUG_PACKET) | |
7c989d74 MB |
347 | zlog_debug ("%s/%d filtered by prefix-list %s", |
348 | inet_ntoa (p->prefix), p->prefixlen, inout); | |
718e3744 | 349 | return -1; |
350 | } | |
351 | } | |
352 | ||
353 | /* All interface filter check. */ | |
354 | dist = distribute_lookup (NULL); | |
355 | if (dist) | |
356 | { | |
7c989d74 | 357 | if (dist->list[distribute]) |
718e3744 | 358 | { |
7c989d74 | 359 | alist = access_list_lookup (AFI_IP, dist->list[distribute]); |
718e3744 | 360 | |
361 | if (alist) | |
362 | { | |
7c989d74 | 363 | if (access_list_apply (alist, (struct prefix *) p) == FILTER_DENY) |
718e3744 | 364 | { |
365 | if (IS_RIP_DEBUG_PACKET) | |
7c989d74 MB |
366 | zlog_debug ("%s/%d filtered by distribute %s", |
367 | inet_ntoa (p->prefix), p->prefixlen, inout); | |
718e3744 | 368 | return -1; |
369 | } | |
370 | } | |
371 | } | |
7c989d74 | 372 | if (dist->prefix[distribute]) |
718e3744 | 373 | { |
7c989d74 | 374 | plist = prefix_list_lookup (AFI_IP, dist->prefix[distribute]); |
718e3744 | 375 | |
376 | if (plist) | |
377 | { | |
378 | if (prefix_list_apply (plist, | |
379 | (struct prefix *) p) == PREFIX_DENY) | |
380 | { | |
381 | if (IS_RIP_DEBUG_PACKET) | |
7c989d74 MB |
382 | zlog_debug ("%s/%d filtered by prefix-list %s", |
383 | inet_ntoa (p->prefix), p->prefixlen, inout); | |
718e3744 | 384 | return -1; |
385 | } | |
386 | } | |
387 | } | |
388 | } | |
389 | return 0; | |
390 | } | |
391 | ||
392 | /* Check nexthop address validity. */ | |
393 | static int | |
394 | rip_nexthop_check (struct in_addr *addr) | |
395 | { | |
52dc7ee6 | 396 | struct listnode *node; |
397 | struct listnode *cnode; | |
718e3744 | 398 | struct interface *ifp; |
399 | struct connected *ifc; | |
400 | struct prefix *p; | |
401 | ||
402 | /* If nexthop address matches local configured address then it is | |
403 | invalid nexthop. */ | |
b2d7c082 DS |
404 | |
405 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), node, ifp)) | |
718e3744 | 406 | { |
1eb8ef25 | 407 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, cnode, ifc)) |
718e3744 | 408 | { |
718e3744 | 409 | p = ifc->address; |
410 | ||
411 | if (p->family == AF_INET | |
412 | && IPV4_ADDR_SAME (&p->u.prefix4, addr)) | |
413 | return -1; | |
414 | } | |
415 | } | |
416 | return 0; | |
417 | } | |
418 | ||
419 | /* RIP add route to routing table. */ | |
dc63bfd4 | 420 | static void |
718e3744 | 421 | rip_rte_process (struct rte *rte, struct sockaddr_in *from, |
a87552cd | 422 | struct interface *ifp) |
718e3744 | 423 | { |
424 | int ret; | |
425 | struct prefix_ipv4 p; | |
426 | struct route_node *rp; | |
bce8e868 | 427 | struct rip_info *rinfo = NULL, newinfo; |
718e3744 | 428 | struct rip_interface *ri; |
429 | struct in_addr *nexthop; | |
718e3744 | 430 | int same = 0; |
fbf5d033 | 431 | unsigned char old_dist, new_dist; |
bce8e868 LF |
432 | struct list *list = NULL; |
433 | struct listnode *node = NULL; | |
718e3744 | 434 | |
435 | /* Make prefix structure. */ | |
436 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
437 | p.family = AF_INET; | |
438 | p.prefix = rte->prefix; | |
439 | p.prefixlen = ip_masklen (rte->mask); | |
440 | ||
441 | /* Make sure mask is applied. */ | |
442 | apply_mask_ipv4 (&p); | |
443 | ||
444 | /* Apply input filters. */ | |
445 | ri = ifp->info; | |
446 | ||
7c989d74 | 447 | ret = rip_filter (RIP_FILTER_IN, &p, ri); |
718e3744 | 448 | if (ret < 0) |
449 | return; | |
450 | ||
bce8e868 LF |
451 | memset (&newinfo, 0, sizeof (newinfo)); |
452 | newinfo.type = ZEBRA_ROUTE_RIP; | |
453 | newinfo.sub_type = RIP_ROUTE_RTE; | |
454 | newinfo.nexthop = rte->nexthop; | |
455 | newinfo.from = from->sin_addr; | |
456 | newinfo.ifindex = ifp->ifindex; | |
457 | newinfo.metric = rte->metric; | |
458 | newinfo.metric_out = rte->metric; /* XXX */ | |
459 | newinfo.tag = ntohs (rte->tag); /* XXX */ | |
460 | ||
16705130 | 461 | /* Modify entry according to the interface routemap. */ |
462 | if (ri->routemap[RIP_FILTER_IN]) | |
463 | { | |
464 | int ret; | |
16705130 | 465 | |
466 | /* The object should be of the type of rip_info */ | |
a87552cd | 467 | ret = route_map_apply (ri->routemap[RIP_FILTER_IN], |
468 | (struct prefix *) &p, RMAP_RIP, &newinfo); | |
16705130 | 469 | |
470 | if (ret == RMAP_DENYMATCH) | |
a87552cd | 471 | { |
472 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 473 | zlog_debug ("RIP %s/%d is filtered by route-map in", |
a87552cd | 474 | inet_ntoa (p.prefix), p.prefixlen); |
475 | return; | |
476 | } | |
16705130 | 477 | |
478 | /* Get back the object */ | |
a87552cd | 479 | rte->nexthop = newinfo.nexthop_out; |
480 | rte->tag = htons (newinfo.tag_out); /* XXX */ | |
481 | rte->metric = newinfo.metric_out; /* XXX: the routemap uses the metric_out field */ | |
16705130 | 482 | } |
483 | ||
718e3744 | 484 | /* Once the entry has been validated, update the metric by |
485 | adding the cost of the network on wich the message | |
486 | arrived. If the result is greater than infinity, use infinity | |
487 | (RFC2453 Sec. 3.9.2) */ | |
488 | /* Zebra ripd can handle offset-list in. */ | |
489 | ret = rip_offset_list_apply_in (&p, ifp, &rte->metric); | |
490 | ||
491 | /* If offset-list does not modify the metric use interface's | |
492 | metric. */ | |
a87552cd | 493 | if (!ret) |
7b3b98ae | 494 | rte->metric += ifp->metric ? ifp->metric : 1; |
718e3744 | 495 | |
496 | if (rte->metric > RIP_METRIC_INFINITY) | |
497 | rte->metric = RIP_METRIC_INFINITY; | |
498 | ||
499 | /* Set nexthop pointer. */ | |
500 | if (rte->nexthop.s_addr == 0) | |
501 | nexthop = &from->sin_addr; | |
502 | else | |
503 | nexthop = &rte->nexthop; | |
504 | ||
16705130 | 505 | /* Check if nexthop address is myself, then do nothing. */ |
718e3744 | 506 | if (rip_nexthop_check (nexthop) < 0) |
507 | { | |
508 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 509 | zlog_debug ("Nexthop address %s is myself", inet_ntoa (*nexthop)); |
718e3744 | 510 | return; |
511 | } | |
512 | ||
513 | /* Get index for the prefix. */ | |
514 | rp = route_node_get (rip->table, (struct prefix *) &p); | |
515 | ||
bce8e868 LF |
516 | newinfo.rp = rp; |
517 | newinfo.nexthop = *nexthop; | |
518 | newinfo.metric = rte->metric; | |
519 | newinfo.tag = ntohs (rte->tag); | |
520 | newinfo.distance = rip_distance_apply (&newinfo); | |
521 | ||
522 | new_dist = newinfo.distance ? newinfo.distance : ZEBRA_RIP_DISTANCE_DEFAULT; | |
523 | ||
718e3744 | 524 | /* Check to see whether there is already RIP route on the table. */ |
bce8e868 LF |
525 | if ((list = rp->info) != NULL) |
526 | for (ALL_LIST_ELEMENTS_RO (list, node, rinfo)) | |
527 | { | |
528 | /* Need to compare with redistributed entry or local entry */ | |
529 | if (!rip_route_rte (rinfo)) | |
530 | break; | |
531 | ||
532 | if (IPV4_ADDR_SAME (&rinfo->from, &from->sin_addr) && | |
533 | IPV4_ADDR_SAME (&rinfo->nexthop, nexthop)) | |
534 | break; | |
535 | ||
536 | if (!listnextnode (node)) | |
537 | { | |
538 | /* Not found in the list */ | |
539 | ||
540 | if (rte->metric > rinfo->metric) | |
541 | { | |
542 | /* New route has a greater metric. Discard it. */ | |
543 | route_unlock_node (rp); | |
544 | return; | |
545 | } | |
546 | ||
547 | if (rte->metric < rinfo->metric) | |
548 | /* New route has a smaller metric. Replace the ECMP list | |
549 | * with the new one in below. */ | |
550 | break; | |
551 | ||
552 | /* Metrics are same. We compare the distances. */ | |
553 | old_dist = rinfo->distance ? \ | |
554 | rinfo->distance : ZEBRA_RIP_DISTANCE_DEFAULT; | |
555 | ||
556 | if (new_dist > old_dist) | |
557 | { | |
558 | /* New route has a greater distance. Discard it. */ | |
559 | route_unlock_node (rp); | |
560 | return; | |
561 | } | |
562 | ||
563 | if (new_dist < old_dist) | |
564 | /* New route has a smaller distance. Replace the ECMP list | |
565 | * with the new one in below. */ | |
566 | break; | |
567 | ||
568 | /* Metrics and distances are both same. Keep "rinfo" null and | |
569 | * the new route is added in the ECMP list in below. */ | |
570 | } | |
571 | } | |
718e3744 | 572 | |
573 | if (rinfo) | |
574 | { | |
718e3744 | 575 | /* Local static route. */ |
576 | if (rinfo->type == ZEBRA_ROUTE_RIP | |
a87552cd | 577 | && ((rinfo->sub_type == RIP_ROUTE_STATIC) || |
578 | (rinfo->sub_type == RIP_ROUTE_DEFAULT)) | |
579 | && rinfo->metric != RIP_METRIC_INFINITY) | |
fbf5d033 | 580 | { |
581 | route_unlock_node (rp); | |
582 | return; | |
583 | } | |
584 | ||
585 | /* Redistributed route check. */ | |
586 | if (rinfo->type != ZEBRA_ROUTE_RIP | |
587 | && rinfo->metric != RIP_METRIC_INFINITY) | |
588 | { | |
fbf5d033 | 589 | old_dist = rinfo->distance; |
b68da446 DL |
590 | /* Only routes directly connected to an interface (nexthop == 0) |
591 | * may have a valid NULL distance */ | |
592 | if (rinfo->nexthop.s_addr != 0) | |
7a383339 | 593 | old_dist = old_dist ? old_dist : ZEBRA_RIP_DISTANCE_DEFAULT; |
fbf5d033 | 594 | /* If imported route does not have STRICT precedence, |
595 | mark it as a ghost */ | |
bce8e868 LF |
596 | if (new_dist <= old_dist && rte->metric != RIP_METRIC_INFINITY) |
597 | rip_ecmp_replace (&newinfo); | |
598 | ||
599 | route_unlock_node (rp); | |
600 | return; | |
fbf5d033 | 601 | } |
718e3744 | 602 | } |
a87552cd | 603 | |
604 | if (!rinfo) | |
718e3744 | 605 | { |
bce8e868 LF |
606 | if (rp->info) |
607 | route_unlock_node (rp); | |
608 | ||
718e3744 | 609 | /* Now, check to see whether there is already an explicit route |
a87552cd | 610 | for the destination prefix. If there is no such route, add |
611 | this route to the routing table, unless the metric is | |
612 | infinity (there is no point in adding a route which | |
613 | unusable). */ | |
718e3744 | 614 | if (rte->metric != RIP_METRIC_INFINITY) |
bce8e868 | 615 | rip_ecmp_add (&newinfo); |
718e3744 | 616 | } |
617 | else | |
618 | { | |
619 | /* Route is there but we are not sure the route is RIP or not. */ | |
a87552cd | 620 | |
718e3744 | 621 | /* If there is an existing route, compare the next hop address |
a87552cd | 622 | to the address of the router from which the datagram came. |
623 | If this datagram is from the same router as the existing | |
624 | route, reinitialize the timeout. */ | |
16705130 | 625 | same = (IPV4_ADDR_SAME (&rinfo->from, &from->sin_addr) |
a87552cd | 626 | && (rinfo->ifindex == ifp->ifindex)); |
718e3744 | 627 | |
bce8e868 LF |
628 | old_dist = rinfo->distance ? \ |
629 | rinfo->distance : ZEBRA_RIP_DISTANCE_DEFAULT; | |
b94f9dbd | 630 | |
718e3744 | 631 | /* Next, compare the metrics. If the datagram is from the same |
a87552cd | 632 | router as the existing route, and the new metric is different |
633 | than the old one; or, if the new metric is lower than the old | |
634 | one, or if the tag has been changed; or if there is a route | |
635 | with a lower administrave distance; or an update of the | |
636 | distance on the actual route; do the following actions: */ | |
637 | if ((same && rinfo->metric != rte->metric) | |
638 | || (rte->metric < rinfo->metric) | |
639 | || ((same) | |
640 | && (rinfo->metric == rte->metric) | |
bce8e868 LF |
641 | && (newinfo.tag != rinfo->tag)) |
642 | || (old_dist > new_dist) | |
643 | || ((old_dist != new_dist) && same)) | |
a87552cd | 644 | { |
bce8e868 | 645 | if (listcount (list) == 1) |
a87552cd | 646 | { |
bce8e868 LF |
647 | if (newinfo.metric != RIP_METRIC_INFINITY) |
648 | rip_ecmp_replace (&newinfo); | |
649 | else | |
650 | rip_ecmp_delete (rinfo); | |
a87552cd | 651 | } |
bce8e868 | 652 | else |
a87552cd | 653 | { |
bce8e868 LF |
654 | if (newinfo.metric < rinfo->metric) |
655 | rip_ecmp_replace (&newinfo); | |
656 | else if (newinfo.metric > rinfo->metric) | |
657 | rip_ecmp_delete (rinfo); | |
658 | else if (new_dist < old_dist) | |
659 | rip_ecmp_replace (&newinfo); | |
660 | else if (new_dist > old_dist) | |
661 | rip_ecmp_delete (rinfo); | |
662 | else | |
663 | { | |
664 | int update = CHECK_FLAG (rinfo->flags, RIP_RTF_FIB) ? 1 : 0; | |
a87552cd | 665 | |
bce8e868 | 666 | assert (newinfo.metric != RIP_METRIC_INFINITY); |
a87552cd | 667 | |
a87552cd | 668 | RIP_TIMER_OFF (rinfo->t_timeout); |
bce8e868 LF |
669 | RIP_TIMER_OFF (rinfo->t_garbage_collect); |
670 | memcpy (rinfo, &newinfo, sizeof (struct rip_info)); | |
671 | rip_timeout_update (rinfo); | |
672 | ||
673 | if (update) | |
674 | rip_zebra_ipv4_add (rp); | |
a87552cd | 675 | |
bce8e868 LF |
676 | /* - Set the route change flag on the first entry. */ |
677 | rinfo = listgetdata (listhead (list)); | |
678 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
679 | rip_event (RIP_TRIGGERED_UPDATE, 0); | |
a87552cd | 680 | } |
681 | } | |
a87552cd | 682 | } |
bce8e868 LF |
683 | else /* same & no change */ |
684 | rip_timeout_update (rinfo); | |
685 | ||
718e3744 | 686 | /* Unlock tempolary lock of the route. */ |
687 | route_unlock_node (rp); | |
688 | } | |
689 | } | |
690 | ||
691 | /* Dump RIP packet */ | |
dc63bfd4 | 692 | static void |
8a676be3 | 693 | rip_packet_dump (struct rip_packet *packet, int size, const char *sndrcv) |
718e3744 | 694 | { |
695 | caddr_t lim; | |
696 | struct rte *rte; | |
8a676be3 | 697 | const char *command_str; |
718e3744 | 698 | char pbuf[BUFSIZ], nbuf[BUFSIZ]; |
699 | u_char netmask = 0; | |
700 | u_char *p; | |
701 | ||
702 | /* Set command string. */ | |
703 | if (packet->command > 0 && packet->command < RIP_COMMAND_MAX) | |
56b40679 | 704 | command_str = lookup_msg (rip_msg, packet->command, NULL); |
718e3744 | 705 | else |
706 | command_str = "unknown"; | |
707 | ||
708 | /* Dump packet header. */ | |
5d6c3779 | 709 | zlog_debug ("%s %s version %d packet size %d", |
718e3744 | 710 | sndrcv, command_str, packet->version, size); |
711 | ||
712 | /* Dump each routing table entry. */ | |
713 | rte = packet->rte; | |
714 | ||
715 | for (lim = (caddr_t) packet + size; (caddr_t) rte < lim; rte++) | |
716 | { | |
717 | if (packet->version == RIPv2) | |
718 | { | |
719 | netmask = ip_masklen (rte->mask); | |
720 | ||
ca5e516c | 721 | if (rte->family == htons (RIP_FAMILY_AUTH)) |
718e3744 | 722 | { |
ca5e516c | 723 | if (rte->tag == htons (RIP_AUTH_SIMPLE_PASSWORD)) |
718e3744 | 724 | { |
725 | p = (u_char *)&rte->prefix; | |
726 | ||
5d6c3779 | 727 | zlog_debug (" family 0x%X type %d auth string: %s", |
718e3744 | 728 | ntohs (rte->family), ntohs (rte->tag), p); |
729 | } | |
ca5e516c | 730 | else if (rte->tag == htons (RIP_AUTH_MD5)) |
718e3744 | 731 | { |
732 | struct rip_md5_info *md5; | |
733 | ||
734 | md5 = (struct rip_md5_info *) &packet->rte; | |
735 | ||
5d6c3779 | 736 | zlog_debug (" family 0x%X type %d (MD5 authentication)", |
718e3744 | 737 | ntohs (md5->family), ntohs (md5->type)); |
5d6c3779 | 738 | zlog_debug (" RIP-2 packet len %d Key ID %d" |
ca5e516c | 739 | " Auth Data len %d", |
740 | ntohs (md5->packet_len), md5->keyid, | |
741 | md5->auth_len); | |
5d6c3779 | 742 | zlog_debug (" Sequence Number %ld", |
ca5e516c | 743 | (u_long) ntohl (md5->sequence)); |
718e3744 | 744 | } |
ca5e516c | 745 | else if (rte->tag == htons (RIP_AUTH_DATA)) |
718e3744 | 746 | { |
747 | p = (u_char *)&rte->prefix; | |
748 | ||
5d6c3779 | 749 | zlog_debug (" family 0x%X type %d (MD5 data)", |
718e3744 | 750 | ntohs (rte->family), ntohs (rte->tag)); |
5d6c3779 | 751 | zlog_debug (" MD5: %02X%02X%02X%02X%02X%02X%02X%02X" |
58093a79 | 752 | "%02X%02X%02X%02X%02X%02X%02X%02X", |
ca5e516c | 753 | p[0], p[1], p[2], p[3], p[4], p[5], p[6], |
58093a79 | 754 | p[7], p[8], p[9], p[10], p[11], p[12], p[13], |
ca5e516c | 755 | p[14], p[15]); |
718e3744 | 756 | } |
757 | else | |
758 | { | |
5d6c3779 | 759 | zlog_debug (" family 0x%X type %d (Unknown auth type)", |
718e3744 | 760 | ntohs (rte->family), ntohs (rte->tag)); |
761 | } | |
762 | } | |
763 | else | |
dc9ffce8 | 764 | zlog_debug (" %s/%d -> %s family %d tag %"ROUTE_TAG_PRI" metric %ld", |
ca5e516c | 765 | inet_ntop (AF_INET, &rte->prefix, pbuf, BUFSIZ), |
766 | netmask, inet_ntop (AF_INET, &rte->nexthop, nbuf, | |
767 | BUFSIZ), ntohs (rte->family), | |
dc9ffce8 CF |
768 | (route_tag_t)ntohs (rte->tag), |
769 | (u_long) ntohl (rte->metric)); | |
718e3744 | 770 | } |
771 | else | |
772 | { | |
dc9ffce8 | 773 | zlog_debug (" %s family %d tag %"ROUTE_TAG_PRI" metric %ld", |
718e3744 | 774 | inet_ntop (AF_INET, &rte->prefix, pbuf, BUFSIZ), |
dc9ffce8 | 775 | ntohs (rte->family), (route_tag_t)ntohs (rte->tag), |
718e3744 | 776 | (u_long)ntohl (rte->metric)); |
777 | } | |
778 | } | |
779 | } | |
780 | ||
781 | /* Check if the destination address is valid (unicast; not net 0 | |
782 | or 127) (RFC2453 Section 3.9.2 - Page 26). But we don't | |
783 | check net 0 because we accept default route. */ | |
dc63bfd4 | 784 | static int |
718e3744 | 785 | rip_destination_check (struct in_addr addr) |
786 | { | |
787 | u_int32_t destination; | |
788 | ||
789 | /* Convert to host byte order. */ | |
790 | destination = ntohl (addr.s_addr); | |
791 | ||
792 | if (IPV4_NET127 (destination)) | |
793 | return 0; | |
794 | ||
795 | /* Net 0 may match to the default route. */ | |
796 | if (IPV4_NET0 (destination) && destination != 0) | |
797 | return 0; | |
798 | ||
799 | /* Unicast address must belong to class A, B, C. */ | |
800 | if (IN_CLASSA (destination)) | |
801 | return 1; | |
802 | if (IN_CLASSB (destination)) | |
803 | return 1; | |
804 | if (IN_CLASSC (destination)) | |
805 | return 1; | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | /* RIP version 2 authentication. */ | |
dc63bfd4 | 811 | static int |
718e3744 | 812 | rip_auth_simple_password (struct rte *rte, struct sockaddr_in *from, |
813 | struct interface *ifp) | |
814 | { | |
815 | struct rip_interface *ri; | |
1cfaf93c RW |
816 | char *auth_str = (char *) &rte->prefix; |
817 | int i; | |
818 | ||
819 | /* reject passwords with zeros in the middle of the string */ | |
820 | for (i = strlen (auth_str); i < 16; i++) | |
821 | { | |
822 | if (auth_str[i] != '\0') | |
823 | return 0; | |
824 | } | |
718e3744 | 825 | |
826 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 827 | zlog_debug ("RIPv2 simple password authentication from %s", |
718e3744 | 828 | inet_ntoa (from->sin_addr)); |
829 | ||
830 | ri = ifp->info; | |
831 | ||
832 | if (ri->auth_type != RIP_AUTH_SIMPLE_PASSWORD | |
ca5e516c | 833 | || rte->tag != htons(RIP_AUTH_SIMPLE_PASSWORD)) |
718e3744 | 834 | return 0; |
835 | ||
836 | /* Simple password authentication. */ | |
837 | if (ri->auth_str) | |
838 | { | |
718e3744 | 839 | if (strncmp (auth_str, ri->auth_str, 16) == 0) |
840 | return 1; | |
841 | } | |
842 | if (ri->key_chain) | |
843 | { | |
844 | struct keychain *keychain; | |
845 | struct key *key; | |
846 | ||
847 | keychain = keychain_lookup (ri->key_chain); | |
848 | if (keychain == NULL) | |
849 | return 0; | |
850 | ||
1cfaf93c | 851 | key = key_match_for_accept (keychain, auth_str); |
718e3744 | 852 | if (key) |
853 | return 1; | |
854 | } | |
855 | return 0; | |
856 | } | |
857 | ||
858 | /* RIP version 2 authentication with MD5. */ | |
dc63bfd4 | 859 | static int |
718e3744 | 860 | rip_auth_md5 (struct rip_packet *packet, struct sockaddr_in *from, |
ca5e516c | 861 | int length, struct interface *ifp) |
718e3744 | 862 | { |
863 | struct rip_interface *ri; | |
864 | struct rip_md5_info *md5; | |
865 | struct rip_md5_data *md5data; | |
866 | struct keychain *keychain; | |
867 | struct key *key; | |
c1a03d47 | 868 | MD5_CTX ctx; |
718e3744 | 869 | u_char digest[RIP_AUTH_MD5_SIZE]; |
870 | u_int16_t packet_len; | |
98fd1e61 | 871 | char auth_str[RIP_AUTH_MD5_SIZE]; |
718e3744 | 872 | |
873 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 874 | zlog_debug ("RIPv2 MD5 authentication from %s", |
ca5e516c | 875 | inet_ntoa (from->sin_addr)); |
718e3744 | 876 | |
877 | ri = ifp->info; | |
878 | md5 = (struct rip_md5_info *) &packet->rte; | |
879 | ||
880 | /* Check auth type. */ | |
ca5e516c | 881 | if (ri->auth_type != RIP_AUTH_MD5 || md5->type != htons(RIP_AUTH_MD5)) |
718e3744 | 882 | return 0; |
883 | ||
ca5e516c | 884 | /* If the authentication length is less than 16, then it must be wrong for |
885 | * any interpretation of rfc2082. Some implementations also interpret | |
886 | * this as RIP_HEADER_SIZE+ RIP_AUTH_MD5_SIZE, aka RIP_AUTH_MD5_COMPAT_SIZE. | |
98fd1e61 | 887 | */ |
ca5e516c | 888 | if ( !((md5->auth_len == RIP_AUTH_MD5_SIZE) |
889 | || (md5->auth_len == RIP_AUTH_MD5_COMPAT_SIZE))) | |
c2bfbcc3 | 890 | { |
891 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 892 | zlog_debug ("RIPv2 MD5 authentication, strange authentication " |
ca5e516c | 893 | "length field %d", md5->auth_len); |
718e3744 | 894 | return 0; |
c2bfbcc3 | 895 | } |
718e3744 | 896 | |
ca5e516c | 897 | /* grab and verify check packet length */ |
898 | packet_len = ntohs (md5->packet_len); | |
899 | ||
900 | if (packet_len > (length - RIP_HEADER_SIZE - RIP_AUTH_MD5_SIZE)) | |
901 | { | |
902 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 903 | zlog_debug ("RIPv2 MD5 authentication, packet length field %d " |
ca5e516c | 904 | "greater than received length %d!", |
905 | md5->packet_len, length); | |
906 | return 0; | |
907 | } | |
908 | ||
909 | /* retrieve authentication data */ | |
910 | md5data = (struct rip_md5_data *) (((u_char *) packet) + packet_len); | |
98fd1e61 | 911 | |
912 | memset (auth_str, 0, RIP_AUTH_MD5_SIZE); | |
ca5e516c | 913 | |
718e3744 | 914 | if (ri->key_chain) |
915 | { | |
916 | keychain = keychain_lookup (ri->key_chain); | |
917 | if (keychain == NULL) | |
918 | return 0; | |
919 | ||
920 | key = key_lookup_for_accept (keychain, md5->keyid); | |
921 | if (key == NULL) | |
922 | return 0; | |
923 | ||
98fd1e61 | 924 | strncpy (auth_str, key->string, RIP_AUTH_MD5_SIZE); |
718e3744 | 925 | } |
98fd1e61 | 926 | else if (ri->auth_str) |
927 | strncpy (auth_str, ri->auth_str, RIP_AUTH_MD5_SIZE); | |
718e3744 | 928 | |
fa93b162 | 929 | if (auth_str[0] == 0) |
718e3744 | 930 | return 0; |
98fd1e61 | 931 | |
718e3744 | 932 | /* MD5 digest authentication. */ |
c1a03d47 | 933 | memset (&ctx, 0, sizeof(ctx)); |
934 | MD5Init(&ctx); | |
98fd1e61 | 935 | MD5Update(&ctx, packet, packet_len + RIP_HEADER_SIZE); |
936 | MD5Update(&ctx, auth_str, RIP_AUTH_MD5_SIZE); | |
c1a03d47 | 937 | MD5Final(digest, &ctx); |
98fd1e61 | 938 | |
939 | if (memcmp (md5data->digest, digest, RIP_AUTH_MD5_SIZE) == 0) | |
718e3744 | 940 | return packet_len; |
941 | else | |
942 | return 0; | |
943 | } | |
944 | ||
b14ee00b | 945 | /* Pick correct auth string for sends, prepare auth_str buffer for use. |
946 | * (left justified and padded). | |
947 | * | |
948 | * presumes one of ri or key is valid, and that the auth strings they point | |
949 | * to are nul terminated. If neither are present, auth_str will be fully | |
950 | * zero padded. | |
951 | * | |
952 | */ | |
953 | static void | |
954 | rip_auth_prepare_str_send (struct rip_interface *ri, struct key *key, | |
955 | char *auth_str, int len) | |
718e3744 | 956 | { |
b14ee00b | 957 | assert (ri || key); |
718e3744 | 958 | |
b14ee00b | 959 | memset (auth_str, 0, len); |
960 | if (key && key->string) | |
961 | strncpy (auth_str, key->string, len); | |
962 | else if (ri->auth_str) | |
963 | strncpy (auth_str, ri->auth_str, len); | |
718e3744 | 964 | |
b14ee00b | 965 | return; |
966 | } | |
718e3744 | 967 | |
b14ee00b | 968 | /* Write RIPv2 simple password authentication information |
969 | * | |
970 | * auth_str is presumed to be 2 bytes and correctly prepared | |
971 | * (left justified and zero padded). | |
972 | */ | |
973 | static void | |
974 | rip_auth_simple_write (struct stream *s, char *auth_str, int len) | |
975 | { | |
976 | assert (s && len == RIP_AUTH_SIMPLE_SIZE); | |
977 | ||
978 | stream_putw (s, RIP_FAMILY_AUTH); | |
979 | stream_putw (s, RIP_AUTH_SIMPLE_PASSWORD); | |
980 | stream_put (s, auth_str, RIP_AUTH_SIMPLE_SIZE); | |
981 | ||
982 | return; | |
983 | } | |
718e3744 | 984 | |
b14ee00b | 985 | /* write RIPv2 MD5 "authentication header" |
986 | * (uses the auth key data field) | |
987 | * | |
988 | * Digest offset field is set to 0. | |
989 | * | |
990 | * returns: offset of the digest offset field, which must be set when | |
991 | * length to the auth-data MD5 digest is known. | |
992 | */ | |
993 | static size_t | |
994 | rip_auth_md5_ah_write (struct stream *s, struct rip_interface *ri, | |
995 | struct key *key) | |
996 | { | |
98fd1e61 | 997 | size_t doff = 0; |
718e3744 | 998 | |
b14ee00b | 999 | assert (s && ri && ri->auth_type == RIP_AUTH_MD5); |
718e3744 | 1000 | |
1001 | /* MD5 authentication. */ | |
ca5e516c | 1002 | stream_putw (s, RIP_FAMILY_AUTH); |
718e3744 | 1003 | stream_putw (s, RIP_AUTH_MD5); |
1004 | ||
b14ee00b | 1005 | /* MD5 AH digest offset field. |
1006 | * | |
1007 | * Set to placeholder value here, to true value when RIP-2 Packet length | |
1008 | * is known. Actual value is set in .....(). | |
1009 | */ | |
98fd1e61 | 1010 | doff = stream_get_endp(s); |
b14ee00b | 1011 | stream_putw (s, 0); |
718e3744 | 1012 | |
1013 | /* Key ID. */ | |
1014 | if (key) | |
1015 | stream_putc (s, key->index % 256); | |
1016 | else | |
1017 | stream_putc (s, 1); | |
1018 | ||
ca5e516c | 1019 | /* Auth Data Len. Set 16 for MD5 authentication data. Older ripds |
1020 | * however expect RIP_HEADER_SIZE + RIP_AUTH_MD5_SIZE so we allow for this | |
1021 | * to be configurable. | |
1022 | */ | |
1023 | stream_putc (s, ri->md5_auth_len); | |
718e3744 | 1024 | |
1025 | /* Sequence Number (non-decreasing). */ | |
1026 | /* RFC2080: The value used in the sequence number is | |
1027 | arbitrary, but two suggestions are the time of the | |
1028 | message's creation or a simple message counter. */ | |
1029 | stream_putl (s, time (NULL)); | |
1030 | ||
1031 | /* Reserved field must be zero. */ | |
1032 | stream_putl (s, 0); | |
1033 | stream_putl (s, 0); | |
1034 | ||
98fd1e61 | 1035 | return doff; |
b14ee00b | 1036 | } |
1037 | ||
1038 | /* If authentication is in used, write the appropriate header | |
1039 | * returns stream offset to which length must later be written | |
1040 | * or 0 if this is not required | |
1041 | */ | |
1042 | static size_t | |
1043 | rip_auth_header_write (struct stream *s, struct rip_interface *ri, | |
1044 | struct key *key, char *auth_str, int len) | |
1045 | { | |
1046 | assert (ri->auth_type != RIP_NO_AUTH); | |
1047 | ||
1048 | switch (ri->auth_type) | |
1049 | { | |
1050 | case RIP_AUTH_SIMPLE_PASSWORD: | |
1051 | rip_auth_prepare_str_send (ri, key, auth_str, len); | |
1052 | rip_auth_simple_write (s, auth_str, len); | |
1053 | return 0; | |
1054 | case RIP_AUTH_MD5: | |
1055 | return rip_auth_md5_ah_write (s, ri, key); | |
1056 | } | |
1057 | assert (1); | |
98fd1e61 | 1058 | return 0; |
b14ee00b | 1059 | } |
1060 | ||
1061 | /* Write RIPv2 MD5 authentication data trailer */ | |
1062 | static void | |
1063 | rip_auth_md5_set (struct stream *s, struct rip_interface *ri, size_t doff, | |
1064 | char *auth_str, int authlen) | |
1065 | { | |
1066 | unsigned long len; | |
c1a03d47 | 1067 | MD5_CTX ctx; |
b14ee00b | 1068 | unsigned char digest[RIP_AUTH_MD5_SIZE]; |
718e3744 | 1069 | |
b14ee00b | 1070 | /* Make it sure this interface is configured as MD5 |
1071 | authentication. */ | |
1072 | assert ((ri->auth_type == RIP_AUTH_MD5) && (authlen == RIP_AUTH_MD5_SIZE)); | |
1073 | assert (doff > 0); | |
1074 | ||
1075 | /* Get packet length. */ | |
1076 | len = stream_get_endp(s); | |
1077 | ||
1078 | /* Check packet length. */ | |
1079 | if (len < (RIP_HEADER_SIZE + RIP_RTE_SIZE)) | |
1080 | { | |
1081 | zlog_err ("rip_auth_md5_set(): packet length %ld is less than minimum length.", len); | |
1082 | return; | |
1083 | } | |
1084 | ||
1085 | /* Set the digest offset length in the header */ | |
1086 | stream_putw_at (s, doff, len); | |
1087 | ||
718e3744 | 1088 | /* Set authentication data. */ |
ca5e516c | 1089 | stream_putw (s, RIP_FAMILY_AUTH); |
1090 | stream_putw (s, RIP_AUTH_DATA); | |
718e3744 | 1091 | |
1092 | /* Generate a digest for the RIP packet. */ | |
c1a03d47 | 1093 | memset(&ctx, 0, sizeof(ctx)); |
1094 | MD5Init(&ctx); | |
98fd1e61 | 1095 | MD5Update(&ctx, STREAM_DATA (s), stream_get_endp (s)); |
c1a03d47 | 1096 | MD5Update(&ctx, auth_str, RIP_AUTH_MD5_SIZE); |
1097 | MD5Final(digest, &ctx); | |
718e3744 | 1098 | |
1099 | /* Copy the digest to the packet. */ | |
1100 | stream_write (s, digest, RIP_AUTH_MD5_SIZE); | |
1101 | } | |
1102 | ||
1103 | /* RIP routing information. */ | |
dc63bfd4 | 1104 | static void |
718e3744 | 1105 | rip_response_process (struct rip_packet *packet, int size, |
c49ad8f1 | 1106 | struct sockaddr_in *from, struct connected *ifc) |
718e3744 | 1107 | { |
1108 | caddr_t lim; | |
1109 | struct rte *rte; | |
727d104b | 1110 | struct prefix_ipv4 ifaddr; |
1111 | struct prefix_ipv4 ifaddrclass; | |
727d104b | 1112 | int subnetted; |
4608cb43 DS |
1113 | |
1114 | memset(&ifaddr, 0, sizeof(ifaddr)); | |
727d104b | 1115 | /* We don't know yet. */ |
1116 | subnetted = -1; | |
1117 | ||
718e3744 | 1118 | /* The Response must be ignored if it is not from the RIP |
1119 | port. (RFC2453 - Sec. 3.9.2)*/ | |
ca5e516c | 1120 | if (from->sin_port != htons(RIP_PORT_DEFAULT)) |
718e3744 | 1121 | { |
1122 | zlog_info ("response doesn't come from RIP port: %d", | |
1123 | from->sin_port); | |
1124 | rip_peer_bad_packet (from); | |
1125 | return; | |
1126 | } | |
1127 | ||
1128 | /* The datagram's IPv4 source address should be checked to see | |
1129 | whether the datagram is from a valid neighbor; the source of the | |
35a60c2d | 1130 | datagram must be on a directly connected network (RFC2453 - Sec. 3.9.2) */ |
95af5f13 | 1131 | if (if_lookup_address((void *)&from->sin_addr, AF_INET, VRF_DEFAULT) == NULL) |
718e3744 | 1132 | { |
1133 | zlog_info ("This datagram doesn't came from a valid neighbor: %s", | |
1134 | inet_ntoa (from->sin_addr)); | |
1135 | rip_peer_bad_packet (from); | |
1136 | return; | |
1137 | } | |
1138 | ||
1139 | /* It is also worth checking to see whether the response is from one | |
1140 | of the router's own addresses. */ | |
1141 | ||
1142 | ; /* Alredy done in rip_read () */ | |
1143 | ||
1144 | /* Update RIP peer. */ | |
1145 | rip_peer_update (from, packet->version); | |
1146 | ||
1147 | /* Set RTE pointer. */ | |
1148 | rte = packet->rte; | |
1149 | ||
1150 | for (lim = (caddr_t) packet + size; (caddr_t) rte < lim; rte++) | |
1151 | { | |
1152 | /* RIPv2 authentication check. */ | |
1153 | /* If the Address Family Identifier of the first (and only the | |
1154 | first) entry in the message is 0xFFFF, then the remainder of | |
1155 | the entry contains the authentication. */ | |
1156 | /* If the packet gets here it means authentication enabled */ | |
1157 | /* Check is done in rip_read(). So, just skipping it */ | |
1158 | if (packet->version == RIPv2 && | |
1159 | rte == packet->rte && | |
ca5e516c | 1160 | rte->family == htons(RIP_FAMILY_AUTH)) |
718e3744 | 1161 | continue; |
1162 | ||
ca5e516c | 1163 | if (rte->family != htons(AF_INET)) |
718e3744 | 1164 | { |
1165 | /* Address family check. RIP only supports AF_INET. */ | |
1166 | zlog_info ("Unsupported family %d from %s.", | |
1167 | ntohs (rte->family), inet_ntoa (from->sin_addr)); | |
1168 | continue; | |
1169 | } | |
1170 | ||
1171 | /* - is the destination address valid (e.g., unicast; not net 0 | |
1172 | or 127) */ | |
1173 | if (! rip_destination_check (rte->prefix)) | |
1174 | { | |
1175 | zlog_info ("Network is net 0 or net 127 or it is not unicast network"); | |
1176 | rip_peer_bad_route (from); | |
1177 | continue; | |
1178 | } | |
1179 | ||
1180 | /* Convert metric value to host byte order. */ | |
1181 | rte->metric = ntohl (rte->metric); | |
1182 | ||
1183 | /* - is the metric valid (i.e., between 1 and 16, inclusive) */ | |
1184 | if (! (rte->metric >= 1 && rte->metric <= 16)) | |
1185 | { | |
1186 | zlog_info ("Route's metric is not in the 1-16 range."); | |
1187 | rip_peer_bad_route (from); | |
1188 | continue; | |
1189 | } | |
1190 | ||
1191 | /* RIPv1 does not have nexthop value. */ | |
1192 | if (packet->version == RIPv1 && rte->nexthop.s_addr != 0) | |
1193 | { | |
1194 | zlog_info ("RIPv1 packet with nexthop value %s", | |
1195 | inet_ntoa (rte->nexthop)); | |
1196 | rip_peer_bad_route (from); | |
1197 | continue; | |
1198 | } | |
1199 | ||
1200 | /* That is, if the provided information is ignored, a possibly | |
1201 | sub-optimal, but absolutely valid, route may be taken. If | |
1202 | the received Next Hop is not directly reachable, it should be | |
1203 | treated as 0.0.0.0. */ | |
1204 | if (packet->version == RIPv2 && rte->nexthop.s_addr != 0) | |
1205 | { | |
1206 | u_int32_t addrval; | |
1207 | ||
1208 | /* Multicast address check. */ | |
1209 | addrval = ntohl (rte->nexthop.s_addr); | |
1210 | if (IN_CLASSD (addrval)) | |
1211 | { | |
1212 | zlog_info ("Nexthop %s is multicast address, skip this rte", | |
1213 | inet_ntoa (rte->nexthop)); | |
1214 | continue; | |
1215 | } | |
1216 | ||
95af5f13 | 1217 | if (! if_lookup_address ((void *)&rte->nexthop, AF_INET, VRF_DEFAULT)) |
718e3744 | 1218 | { |
1219 | struct route_node *rn; | |
1220 | struct rip_info *rinfo; | |
1221 | ||
1222 | rn = route_node_match_ipv4 (rip->table, &rte->nexthop); | |
1223 | ||
1224 | if (rn) | |
1225 | { | |
1226 | rinfo = rn->info; | |
1227 | ||
1228 | if (rinfo->type == ZEBRA_ROUTE_RIP | |
1229 | && rinfo->sub_type == RIP_ROUTE_RTE) | |
1230 | { | |
1231 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1232 | zlog_debug ("Next hop %s is on RIP network. Set nexthop to the packet's originator", inet_ntoa (rte->nexthop)); |
718e3744 | 1233 | rte->nexthop = rinfo->from; |
1234 | } | |
1235 | else | |
1236 | { | |
1237 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1238 | zlog_debug ("Next hop %s is not directly reachable. Treat it as 0.0.0.0", inet_ntoa (rte->nexthop)); |
718e3744 | 1239 | rte->nexthop.s_addr = 0; |
1240 | } | |
1241 | ||
1242 | route_unlock_node (rn); | |
1243 | } | |
1244 | else | |
1245 | { | |
1246 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1247 | zlog_debug ("Next hop %s is not directly reachable. Treat it as 0.0.0.0", inet_ntoa (rte->nexthop)); |
718e3744 | 1248 | rte->nexthop.s_addr = 0; |
1249 | } | |
1250 | ||
1251 | } | |
1252 | } | |
1253 | ||
1254 | /* For RIPv1, there won't be a valid netmask. | |
1255 | ||
1256 | This is a best guess at the masks. If everyone was using old | |
1257 | Ciscos before the 'ip subnet zero' option, it would be almost | |
1258 | right too :-) | |
1259 | ||
1260 | Cisco summarize ripv1 advertisments to the classful boundary | |
1261 | (/16 for class B's) except when the RIP packet does to inside | |
1262 | the classful network in question. */ | |
1263 | ||
1264 | if ((packet->version == RIPv1 && rte->prefix.s_addr != 0) | |
1265 | || (packet->version == RIPv2 | |
1266 | && (rte->prefix.s_addr != 0 && rte->mask.s_addr == 0))) | |
1267 | { | |
1268 | u_int32_t destination; | |
1269 | ||
727d104b | 1270 | if (subnetted == -1) |
c49ad8f1 | 1271 | { |
1272 | memcpy (&ifaddr, ifc->address, sizeof (struct prefix_ipv4)); | |
1273 | memcpy (&ifaddrclass, &ifaddr, sizeof (struct prefix_ipv4)); | |
1274 | apply_classful_mask_ipv4 (&ifaddrclass); | |
1275 | subnetted = 0; | |
1276 | if (ifaddr.prefixlen > ifaddrclass.prefixlen) | |
1277 | subnetted = 1; | |
1278 | } | |
727d104b | 1279 | |
1280 | destination = ntohl (rte->prefix.s_addr); | |
1281 | ||
1282 | if (IN_CLASSA (destination)) | |
1283 | masklen2ip (8, &rte->mask); | |
1284 | else if (IN_CLASSB (destination)) | |
1285 | masklen2ip (16, &rte->mask); | |
1286 | else if (IN_CLASSC (destination)) | |
718e3744 | 1287 | masklen2ip (24, &rte->mask); |
727d104b | 1288 | |
1289 | if (subnetted == 1) | |
1290 | masklen2ip (ifaddrclass.prefixlen, | |
1291 | (struct in_addr *) &destination); | |
1292 | if ((subnetted == 1) && ((rte->prefix.s_addr & destination) == | |
1293 | ifaddrclass.prefix.s_addr)) | |
1294 | { | |
1295 | masklen2ip (ifaddr.prefixlen, &rte->mask); | |
1296 | if ((rte->prefix.s_addr & rte->mask.s_addr) != rte->prefix.s_addr) | |
1297 | masklen2ip (32, &rte->mask); | |
1298 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1299 | zlog_debug ("Subnetted route %s", inet_ntoa (rte->prefix)); |
718e3744 | 1300 | } |
727d104b | 1301 | else |
718e3744 | 1302 | { |
727d104b | 1303 | if ((rte->prefix.s_addr & rte->mask.s_addr) != rte->prefix.s_addr) |
1304 | continue; | |
718e3744 | 1305 | } |
727d104b | 1306 | |
1307 | if (IS_RIP_DEBUG_EVENT) | |
718e3744 | 1308 | { |
5d6c3779 | 1309 | zlog_debug ("Resultant route %s", inet_ntoa (rte->prefix)); |
1310 | zlog_debug ("Resultant mask %s", inet_ntoa (rte->mask)); | |
718e3744 | 1311 | } |
1312 | } | |
1313 | ||
1314 | /* In case of RIPv2, if prefix in RTE is not netmask applied one | |
1315 | ignore the entry. */ | |
1316 | if ((packet->version == RIPv2) | |
1317 | && (rte->mask.s_addr != 0) | |
1318 | && ((rte->prefix.s_addr & rte->mask.s_addr) != rte->prefix.s_addr)) | |
1319 | { | |
1320 | zlog_warn ("RIPv2 address %s is not mask /%d applied one", | |
1321 | inet_ntoa (rte->prefix), ip_masklen (rte->mask)); | |
1322 | rip_peer_bad_route (from); | |
1323 | continue; | |
1324 | } | |
1325 | ||
1326 | /* Default route's netmask is ignored. */ | |
1327 | if (packet->version == RIPv2 | |
1328 | && (rte->prefix.s_addr == 0) | |
1329 | && (rte->mask.s_addr != 0)) | |
1330 | { | |
1331 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1332 | zlog_debug ("Default route with non-zero netmask. Set zero to netmask"); |
718e3744 | 1333 | rte->mask.s_addr = 0; |
1334 | } | |
1335 | ||
1336 | /* Routing table updates. */ | |
c49ad8f1 | 1337 | rip_rte_process (rte, from, ifc->ifp); |
718e3744 | 1338 | } |
1339 | } | |
1340 | ||
a4e987e0 | 1341 | /* Make socket for RIP protocol. */ |
f69bd9da | 1342 | static int |
ae735d2d | 1343 | rip_create_socket (void) |
a4e987e0 | 1344 | { |
1345 | int ret; | |
1346 | int sock; | |
1347 | struct sockaddr_in addr; | |
f69bd9da | 1348 | |
2c61ae37 | 1349 | memset (&addr, 0, sizeof (struct sockaddr_in)); |
ae735d2d RW |
1350 | addr.sin_family = AF_INET; |
1351 | addr.sin_addr.s_addr = INADDR_ANY; | |
6f0e3f6e | 1352 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
ae735d2d | 1353 | addr.sin_len = sizeof (struct sockaddr_in); |
6f0e3f6e | 1354 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
2c61ae37 | 1355 | /* sending port must always be the RIP port */ |
1356 | addr.sin_port = htons (RIP_PORT_DEFAULT); | |
1357 | ||
a4e987e0 | 1358 | /* Make datagram socket. */ |
8578874d | 1359 | sock = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
a4e987e0 | 1360 | if (sock < 0) |
1361 | { | |
1362 | zlog_err("Cannot create UDP socket: %s", safe_strerror(errno)); | |
1363 | exit (1); | |
1364 | } | |
1365 | ||
1366 | sockopt_broadcast (sock); | |
1367 | sockopt_reuseaddr (sock); | |
1368 | sockopt_reuseport (sock); | |
043144ea | 1369 | setsockopt_ipv4_multicast_loop (sock, 0); |
a4e987e0 | 1370 | #ifdef RIP_RECVMSG |
1371 | setsockopt_pktinfo (sock); | |
1372 | #endif /* RIP_RECVMSG */ | |
78b31d5c SH |
1373 | #ifdef IPTOS_PREC_INTERNETCONTROL |
1374 | setsockopt_ipv4_tos (sock, IPTOS_PREC_INTERNETCONTROL); | |
1375 | #endif | |
a4e987e0 | 1376 | |
1377 | if (ripd_privs.change (ZPRIVS_RAISE)) | |
1378 | zlog_err ("rip_create_socket: could not raise privs"); | |
f69bd9da | 1379 | setsockopt_so_recvbuf (sock, RIP_UDP_RCV_BUF); |
1380 | if ( (ret = bind (sock, (struct sockaddr *) & addr, sizeof (addr))) < 0) | |
1381 | ||
a4e987e0 | 1382 | { |
1383 | int save_errno = errno; | |
1384 | if (ripd_privs.change (ZPRIVS_LOWER)) | |
1385 | zlog_err ("rip_create_socket: could not lower privs"); | |
2c61ae37 | 1386 | |
1387 | zlog_err("%s: Can't bind socket %d to %s port %d: %s", __func__, | |
1388 | sock, inet_ntoa(addr.sin_addr), | |
1389 | (int) ntohs(addr.sin_port), | |
1390 | safe_strerror(save_errno)); | |
1391 | ||
f69bd9da | 1392 | close (sock); |
a4e987e0 | 1393 | return ret; |
1394 | } | |
f69bd9da | 1395 | |
a4e987e0 | 1396 | if (ripd_privs.change (ZPRIVS_LOWER)) |
1397 | zlog_err ("rip_create_socket: could not lower privs"); | |
1398 | ||
1399 | return sock; | |
1400 | } | |
1401 | ||
c49ad8f1 | 1402 | /* RIP packet send to destination address, on interface denoted by |
1403 | * by connected argument. NULL to argument denotes destination should be | |
1404 | * should be RIP multicast group | |
1405 | */ | |
dc63bfd4 | 1406 | static int |
c49ad8f1 | 1407 | rip_send_packet (u_char * buf, int size, struct sockaddr_in *to, |
1408 | struct connected *ifc) | |
718e3744 | 1409 | { |
ae735d2d | 1410 | int ret; |
718e3744 | 1411 | struct sockaddr_in sin; |
c49ad8f1 | 1412 | |
1413 | assert (ifc != NULL); | |
1414 | ||
931cd54d | 1415 | if (IS_RIP_DEBUG_PACKET) |
1416 | { | |
f69bd9da | 1417 | #define ADDRESS_SIZE 20 |
1418 | char dst[ADDRESS_SIZE]; | |
1419 | dst[ADDRESS_SIZE - 1] = '\0'; | |
1420 | ||
931cd54d | 1421 | if (to) |
1422 | { | |
f69bd9da | 1423 | strncpy (dst, inet_ntoa(to->sin_addr), ADDRESS_SIZE - 1); |
931cd54d | 1424 | } |
1425 | else | |
1426 | { | |
1427 | sin.sin_addr.s_addr = htonl (INADDR_RIP_GROUP); | |
f69bd9da | 1428 | strncpy (dst, inet_ntoa(sin.sin_addr), ADDRESS_SIZE - 1); |
931cd54d | 1429 | } |
f69bd9da | 1430 | #undef ADDRESS_SIZE |
5d6c3779 | 1431 | zlog_debug("rip_send_packet %s > %s (%s)", |
c49ad8f1 | 1432 | inet_ntoa(ifc->address->u.prefix4), |
1433 | dst, ifc->ifp->name); | |
931cd54d | 1434 | } |
f69bd9da | 1435 | |
c49ad8f1 | 1436 | if ( CHECK_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY) ) |
931cd54d | 1437 | { |
1438 | /* | |
1439 | * ZEBRA_IFA_SECONDARY is set on linux when an interface is configured | |
1440 | * with multiple addresses on the same subnet: the first address | |
1441 | * on the subnet is configured "primary", and all subsequent addresses | |
1442 | * on that subnet are treated as "secondary" addresses. | |
1443 | * In order to avoid routing-table bloat on other rip listeners, | |
1444 | * we do not send out RIP packets with ZEBRA_IFA_SECONDARY source addrs. | |
1445 | * XXX Since Linux is the only system for which the ZEBRA_IFA_SECONDARY | |
1446 | * flag is set, we would end up sending a packet for a "secondary" | |
1447 | * source address on non-linux systems. | |
1448 | */ | |
1449 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 1450 | zlog_debug("duplicate dropped"); |
931cd54d | 1451 | return 0; |
1452 | } | |
1453 | ||
718e3744 | 1454 | /* Make destination address. */ |
1455 | memset (&sin, 0, sizeof (struct sockaddr_in)); | |
1456 | sin.sin_family = AF_INET; | |
6f0e3f6e | 1457 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
718e3744 | 1458 | sin.sin_len = sizeof (struct sockaddr_in); |
6f0e3f6e | 1459 | #endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */ |
718e3744 | 1460 | |
1461 | /* When destination is specified, use it's port and address. */ | |
1462 | if (to) | |
1463 | { | |
718e3744 | 1464 | sin.sin_port = to->sin_port; |
1465 | sin.sin_addr = to->sin_addr; | |
1466 | } | |
1467 | else | |
1468 | { | |
718e3744 | 1469 | sin.sin_port = htons (RIP_PORT_DEFAULT); |
1470 | sin.sin_addr.s_addr = htonl (INADDR_RIP_GROUP); | |
ae735d2d RW |
1471 | |
1472 | rip_interface_multicast_set (rip->sock, ifc); | |
718e3744 | 1473 | } |
1474 | ||
ae735d2d | 1475 | ret = sendto (rip->sock, buf, size, 0, (struct sockaddr *)&sin, |
718e3744 | 1476 | sizeof (struct sockaddr_in)); |
1477 | ||
1478 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1479 | zlog_debug ("SEND to %s.%d", inet_ntoa(sin.sin_addr), |
cc1131ab | 1480 | ntohs (sin.sin_port)); |
718e3744 | 1481 | |
1482 | if (ret < 0) | |
6099b3b5 | 1483 | zlog_warn ("can't send packet : %s", safe_strerror (errno)); |
718e3744 | 1484 | |
718e3744 | 1485 | return ret; |
1486 | } | |
1487 | ||
1488 | /* Add redistributed route to RIP table. */ | |
1489 | void | |
1490 | rip_redistribute_add (int type, int sub_type, struct prefix_ipv4 *p, | |
b892f1dd | 1491 | ifindex_t ifindex, struct in_addr *nexthop, |
9471675f CF |
1492 | unsigned int metric, unsigned char distance, |
1493 | route_tag_t tag) | |
718e3744 | 1494 | { |
1495 | int ret; | |
bce8e868 LF |
1496 | struct route_node *rp = NULL; |
1497 | struct rip_info *rinfo = NULL, newinfo; | |
1498 | struct list *list = NULL; | |
718e3744 | 1499 | |
1500 | /* Redistribute route */ | |
1501 | ret = rip_destination_check (p->prefix); | |
1502 | if (! ret) | |
1503 | return; | |
1504 | ||
1505 | rp = route_node_get (rip->table, (struct prefix *) p); | |
1506 | ||
bce8e868 LF |
1507 | memset (&newinfo, 0, sizeof (struct rip_info)); |
1508 | newinfo.type = type; | |
1509 | newinfo.sub_type = sub_type; | |
1510 | newinfo.ifindex = ifindex; | |
1511 | newinfo.metric = 1; | |
1512 | newinfo.external_metric = metric; | |
1513 | newinfo.distance = distance; | |
9471675f CF |
1514 | if (tag <= UINT16_MAX) /* RIP only supports 16 bit tags */ |
1515 | newinfo.tag = tag; | |
bce8e868 LF |
1516 | newinfo.rp = rp; |
1517 | if (nexthop) | |
1518 | newinfo.nexthop = *nexthop; | |
718e3744 | 1519 | |
bce8e868 | 1520 | if ((list = rp->info) != NULL && listcount (list) != 0) |
718e3744 | 1521 | { |
bce8e868 LF |
1522 | rinfo = listgetdata (listhead (list)); |
1523 | ||
718e3744 | 1524 | if (rinfo->type == ZEBRA_ROUTE_CONNECT |
1525 | && rinfo->sub_type == RIP_ROUTE_INTERFACE | |
1526 | && rinfo->metric != RIP_METRIC_INFINITY) | |
1527 | { | |
1528 | route_unlock_node (rp); | |
1529 | return; | |
1530 | } | |
1531 | ||
1532 | /* Manually configured RIP route check. */ | |
1533 | if (rinfo->type == ZEBRA_ROUTE_RIP | |
16705130 | 1534 | && ((rinfo->sub_type == RIP_ROUTE_STATIC) || |
1535 | (rinfo->sub_type == RIP_ROUTE_DEFAULT)) ) | |
718e3744 | 1536 | { |
16705130 | 1537 | if (type != ZEBRA_ROUTE_RIP || ((sub_type != RIP_ROUTE_STATIC) && |
1538 | (sub_type != RIP_ROUTE_DEFAULT))) | |
718e3744 | 1539 | { |
1540 | route_unlock_node (rp); | |
1541 | return; | |
1542 | } | |
1543 | } | |
1544 | ||
bce8e868 LF |
1545 | rinfo = rip_ecmp_replace (&newinfo); |
1546 | route_unlock_node (rp); | |
718e3744 | 1547 | } |
bce8e868 LF |
1548 | else |
1549 | rinfo = rip_ecmp_add (&newinfo); | |
718e3744 | 1550 | |
16705130 | 1551 | if (IS_RIP_DEBUG_EVENT) { |
1552 | if (!nexthop) | |
5d6c3779 | 1553 | zlog_debug ("Redistribute new prefix %s/%d on the interface %s", |
baaea325 DS |
1554 | inet_ntoa(p->prefix), p->prefixlen, |
1555 | ifindex2ifname(ifindex, VRF_DEFAULT)); | |
16705130 | 1556 | else |
5d6c3779 | 1557 | zlog_debug ("Redistribute new prefix %s/%d with nexthop %s on the interface %s", |
baaea325 DS |
1558 | inet_ntoa(p->prefix), p->prefixlen, inet_ntoa(rinfo->nexthop), |
1559 | ifindex2ifname(ifindex, VRF_DEFAULT)); | |
16705130 | 1560 | } |
1561 | ||
718e3744 | 1562 | rip_event (RIP_TRIGGERED_UPDATE, 0); |
1563 | } | |
1564 | ||
1565 | /* Delete redistributed route from RIP table. */ | |
1566 | void | |
1567 | rip_redistribute_delete (int type, int sub_type, struct prefix_ipv4 *p, | |
b892f1dd | 1568 | ifindex_t ifindex) |
718e3744 | 1569 | { |
1570 | int ret; | |
1571 | struct route_node *rp; | |
1572 | struct rip_info *rinfo; | |
1573 | ||
1574 | ret = rip_destination_check (p->prefix); | |
1575 | if (! ret) | |
1576 | return; | |
1577 | ||
1578 | rp = route_node_lookup (rip->table, (struct prefix *) p); | |
1579 | if (rp) | |
1580 | { | |
bce8e868 | 1581 | struct list *list = rp->info; |
718e3744 | 1582 | |
bce8e868 LF |
1583 | if (list != NULL && listcount (list) != 0) |
1584 | { | |
1585 | rinfo = listgetdata (listhead (list)); | |
1586 | if (rinfo != NULL | |
1587 | && rinfo->type == type | |
1588 | && rinfo->sub_type == sub_type | |
1589 | && rinfo->ifindex == ifindex) | |
1590 | { | |
1591 | /* Perform poisoned reverse. */ | |
1592 | rinfo->metric = RIP_METRIC_INFINITY; | |
1593 | RIP_TIMER_ON (rinfo->t_garbage_collect, | |
1594 | rip_garbage_collect, rip->garbage_time); | |
1595 | RIP_TIMER_OFF (rinfo->t_timeout); | |
1596 | rinfo->flags |= RIP_RTF_CHANGED; | |
718e3744 | 1597 | |
bce8e868 LF |
1598 | if (IS_RIP_DEBUG_EVENT) |
1599 | zlog_debug ("Poisone %s/%d on the interface %s with an " | |
1600 | "infinity metric [delete]", | |
1601 | inet_ntoa(p->prefix), p->prefixlen, | |
baaea325 | 1602 | ifindex2ifname(ifindex, VRF_DEFAULT)); |
16705130 | 1603 | |
bce8e868 LF |
1604 | rip_event (RIP_TRIGGERED_UPDATE, 0); |
1605 | } | |
1606 | } | |
1607 | route_unlock_node (rp); | |
718e3744 | 1608 | } |
1609 | } | |
1610 | ||
1611 | /* Response to request called from rip_read ().*/ | |
dc63bfd4 | 1612 | static void |
718e3744 | 1613 | rip_request_process (struct rip_packet *packet, int size, |
c49ad8f1 | 1614 | struct sockaddr_in *from, struct connected *ifc) |
718e3744 | 1615 | { |
1616 | caddr_t lim; | |
1617 | struct rte *rte; | |
1618 | struct prefix_ipv4 p; | |
1619 | struct route_node *rp; | |
1620 | struct rip_info *rinfo; | |
1621 | struct rip_interface *ri; | |
1622 | ||
16705130 | 1623 | /* Does not reponse to the requests on the loopback interfaces */ |
c49ad8f1 | 1624 | if (if_is_loopback (ifc->ifp)) |
16705130 | 1625 | return; |
1626 | ||
429a0f8c | 1627 | /* Check RIP process is enabled on this interface. */ |
c49ad8f1 | 1628 | ri = ifc->ifp->info; |
16705130 | 1629 | if (! ri->running) |
1630 | return; | |
718e3744 | 1631 | |
1632 | /* When passive interface is specified, suppress responses */ | |
1633 | if (ri->passive) | |
1634 | return; | |
c49ad8f1 | 1635 | |
718e3744 | 1636 | /* RIP peer update. */ |
1637 | rip_peer_update (from, packet->version); | |
1638 | ||
1639 | lim = ((caddr_t) packet) + size; | |
1640 | rte = packet->rte; | |
1641 | ||
1642 | /* The Request is processed entry by entry. If there are no | |
1643 | entries, no response is given. */ | |
1644 | if (lim == (caddr_t) rte) | |
1645 | return; | |
1646 | ||
1647 | /* There is one special case. If there is exactly one entry in the | |
1648 | request, and it has an address family identifier of zero and a | |
1649 | metric of infinity (i.e., 16), then this is a request to send the | |
1650 | entire routing table. */ | |
1651 | if (lim == ((caddr_t) (rte + 1)) && | |
1652 | ntohs (rte->family) == 0 && | |
1653 | ntohl (rte->metric) == RIP_METRIC_INFINITY) | |
1654 | { | |
1655 | /* All route with split horizon */ | |
c49ad8f1 | 1656 | rip_output_process (ifc, from, rip_all_route, packet->version); |
718e3744 | 1657 | } |
1658 | else | |
1659 | { | |
4e054866 RW |
1660 | if (ntohs (rte->family) != AF_INET) |
1661 | return; | |
1662 | ||
718e3744 | 1663 | /* Examine the list of RTEs in the Request one by one. For each |
1664 | entry, look up the destination in the router's routing | |
1665 | database and, if there is a route, put that route's metric in | |
1666 | the metric field of the RTE. If there is no explicit route | |
1667 | to the specified destination, put infinity in the metric | |
1668 | field. Once all the entries have been filled in, change the | |
1669 | command from Request to Response and send the datagram back | |
1670 | to the requestor. */ | |
1671 | p.family = AF_INET; | |
1672 | ||
1673 | for (; ((caddr_t) rte) < lim; rte++) | |
1674 | { | |
1675 | p.prefix = rte->prefix; | |
1676 | p.prefixlen = ip_masklen (rte->mask); | |
1677 | apply_mask_ipv4 (&p); | |
1678 | ||
1679 | rp = route_node_lookup (rip->table, (struct prefix *) &p); | |
1680 | if (rp) | |
1681 | { | |
bce8e868 | 1682 | rinfo = listgetdata (listhead ((struct list *)rp->info)); |
718e3744 | 1683 | rte->metric = htonl (rinfo->metric); |
1684 | route_unlock_node (rp); | |
1685 | } | |
1686 | else | |
1687 | rte->metric = htonl (RIP_METRIC_INFINITY); | |
1688 | } | |
1689 | packet->command = RIP_RESPONSE; | |
1690 | ||
c49ad8f1 | 1691 | rip_send_packet ((u_char *)packet, size, from, ifc); |
718e3744 | 1692 | } |
1693 | rip_global_queries++; | |
1694 | } | |
1695 | ||
1696 | #if RIP_RECVMSG | |
1697 | /* Set IPv6 packet info to the socket. */ | |
1698 | static int | |
1699 | setsockopt_pktinfo (int sock) | |
1700 | { | |
1701 | int ret; | |
1702 | int val = 1; | |
1703 | ||
1704 | ret = setsockopt(sock, IPPROTO_IP, IP_PKTINFO, &val, sizeof(val)); | |
1705 | if (ret < 0) | |
6099b3b5 | 1706 | zlog_warn ("Can't setsockopt IP_PKTINFO : %s", safe_strerror (errno)); |
718e3744 | 1707 | return ret; |
1708 | } | |
1709 | ||
1710 | /* Read RIP packet by recvmsg function. */ | |
1711 | int | |
1712 | rip_recvmsg (int sock, u_char *buf, int size, struct sockaddr_in *from, | |
b892f1dd | 1713 | ifindex_t *ifindex) |
718e3744 | 1714 | { |
1715 | int ret; | |
1716 | struct msghdr msg; | |
1717 | struct iovec iov; | |
1718 | struct cmsghdr *ptr; | |
1719 | char adata[1024]; | |
1720 | ||
1721 | msg.msg_name = (void *) from; | |
1722 | msg.msg_namelen = sizeof (struct sockaddr_in); | |
1723 | msg.msg_iov = &iov; | |
1724 | msg.msg_iovlen = 1; | |
1725 | msg.msg_control = (void *) adata; | |
1726 | msg.msg_controllen = sizeof adata; | |
1727 | iov.iov_base = buf; | |
1728 | iov.iov_len = size; | |
1729 | ||
1730 | ret = recvmsg (sock, &msg, 0); | |
1731 | if (ret < 0) | |
1732 | return ret; | |
1733 | ||
b99760ab | 1734 | for (ptr = ZCMSG_FIRSTHDR(&msg); ptr != NULL; ptr = CMSG_NXTHDR(&msg, ptr)) |
718e3744 | 1735 | if (ptr->cmsg_level == IPPROTO_IP && ptr->cmsg_type == IP_PKTINFO) |
1736 | { | |
1737 | struct in_pktinfo *pktinfo; | |
1738 | int i; | |
1739 | ||
1740 | pktinfo = (struct in_pktinfo *) CMSG_DATA (ptr); | |
1741 | i = pktinfo->ipi_ifindex; | |
1742 | } | |
1743 | return ret; | |
1744 | } | |
1745 | ||
1746 | /* RIP packet read function. */ | |
1747 | int | |
1748 | rip_read_new (struct thread *t) | |
1749 | { | |
1750 | int ret; | |
1751 | int sock; | |
1752 | char buf[RIP_PACKET_MAXSIZ]; | |
1753 | struct sockaddr_in from; | |
b892f1dd | 1754 | ifindex_t ifindex; |
718e3744 | 1755 | |
1756 | /* Fetch socket then register myself. */ | |
1757 | sock = THREAD_FD (t); | |
1758 | rip_event (RIP_READ, sock); | |
1759 | ||
1760 | /* Read RIP packet. */ | |
1761 | ret = rip_recvmsg (sock, buf, RIP_PACKET_MAXSIZ, &from, (int *)&ifindex); | |
1762 | if (ret < 0) | |
1763 | { | |
6099b3b5 | 1764 | zlog_warn ("Can't read RIP packet: %s", safe_strerror (errno)); |
718e3744 | 1765 | return ret; |
1766 | } | |
1767 | ||
1768 | return ret; | |
1769 | } | |
1770 | #endif /* RIP_RECVMSG */ | |
1771 | ||
1772 | /* First entry point of RIP packet. */ | |
dc63bfd4 | 1773 | static int |
718e3744 | 1774 | rip_read (struct thread *t) |
1775 | { | |
1776 | int sock; | |
1777 | int ret; | |
1778 | int rtenum; | |
1779 | union rip_buf rip_buf; | |
1780 | struct rip_packet *packet; | |
1781 | struct sockaddr_in from; | |
11dde9c2 | 1782 | int len; |
3e557ae1 | 1783 | int vrecv; |
11dde9c2 | 1784 | socklen_t fromlen; |
b10ce841 | 1785 | struct interface *ifp = NULL; |
c49ad8f1 | 1786 | struct connected *ifc; |
718e3744 | 1787 | struct rip_interface *ri; |
bd40c341 | 1788 | struct prefix p; |
718e3744 | 1789 | |
1790 | /* Fetch socket then register myself. */ | |
1791 | sock = THREAD_FD (t); | |
1792 | rip->t_read = NULL; | |
1793 | ||
1794 | /* Add myself to tne next event */ | |
1795 | rip_event (RIP_READ, sock); | |
1796 | ||
1797 | /* RIPd manages only IPv4. */ | |
1798 | memset (&from, 0, sizeof (struct sockaddr_in)); | |
1799 | fromlen = sizeof (struct sockaddr_in); | |
1800 | ||
1801 | len = recvfrom (sock, (char *)&rip_buf.buf, sizeof (rip_buf.buf), 0, | |
1802 | (struct sockaddr *) &from, &fromlen); | |
1803 | if (len < 0) | |
1804 | { | |
6099b3b5 | 1805 | zlog_info ("recvfrom failed: %s", safe_strerror (errno)); |
718e3744 | 1806 | return len; |
1807 | } | |
1808 | ||
1809 | /* Check is this packet comming from myself? */ | |
31a476c7 | 1810 | if (if_check_address (from.sin_addr)) |
718e3744 | 1811 | { |
1812 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 1813 | zlog_debug ("ignore packet comes from myself"); |
718e3744 | 1814 | return -1; |
1815 | } | |
1816 | ||
1817 | /* Which interface is this packet comes from. */ | |
95af5f13 | 1818 | ifc = if_lookup_address ((void *)&from.sin_addr, AF_INET, VRF_DEFAULT); |
b10ce841 RW |
1819 | if (ifc) |
1820 | ifp = ifc->ifp; | |
1821 | ||
718e3744 | 1822 | /* RIP packet received */ |
1823 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1824 | zlog_debug ("RECV packet from %s port %d on %s", |
718e3744 | 1825 | inet_ntoa (from.sin_addr), ntohs (from.sin_port), |
1826 | ifp ? ifp->name : "unknown"); | |
1827 | ||
1828 | /* If this packet come from unknown interface, ignore it. */ | |
1829 | if (ifp == NULL) | |
1830 | { | |
766a0ca3 | 1831 | zlog_info ("rip_read: cannot find interface for packet from %s port %d", |
1832 | inet_ntoa(from.sin_addr), ntohs (from.sin_port)); | |
c49ad8f1 | 1833 | return -1; |
1834 | } | |
bd40c341 DS |
1835 | |
1836 | p.family = AF_INET; | |
1837 | p.u.prefix4 = from.sin_addr; | |
1838 | p.prefixlen = IPV4_MAX_BITLEN; | |
1839 | ||
1840 | ifc = connected_lookup_prefix (ifp, &p); | |
c49ad8f1 | 1841 | |
1842 | if (ifc == NULL) | |
1843 | { | |
766a0ca3 | 1844 | zlog_info ("rip_read: cannot find connected address for packet from %s " |
1845 | "port %d on interface %s", | |
1846 | inet_ntoa(from.sin_addr), ntohs (from.sin_port), ifp->name); | |
718e3744 | 1847 | return -1; |
1848 | } | |
1849 | ||
1850 | /* Packet length check. */ | |
1851 | if (len < RIP_PACKET_MINSIZ) | |
1852 | { | |
1853 | zlog_warn ("packet size %d is smaller than minimum size %d", | |
1854 | len, RIP_PACKET_MINSIZ); | |
1855 | rip_peer_bad_packet (&from); | |
1856 | return len; | |
1857 | } | |
1858 | if (len > RIP_PACKET_MAXSIZ) | |
1859 | { | |
1860 | zlog_warn ("packet size %d is larger than max size %d", | |
1861 | len, RIP_PACKET_MAXSIZ); | |
1862 | rip_peer_bad_packet (&from); | |
1863 | return len; | |
1864 | } | |
1865 | ||
1866 | /* Packet alignment check. */ | |
1867 | if ((len - RIP_PACKET_MINSIZ) % 20) | |
1868 | { | |
1869 | zlog_warn ("packet size %d is wrong for RIP packet alignment", len); | |
1870 | rip_peer_bad_packet (&from); | |
1871 | return len; | |
1872 | } | |
1873 | ||
1874 | /* Set RTE number. */ | |
1875 | rtenum = ((len - RIP_PACKET_MINSIZ) / 20); | |
1876 | ||
1877 | /* For easy to handle. */ | |
1878 | packet = &rip_buf.rip_packet; | |
1879 | ||
1880 | /* RIP version check. */ | |
1881 | if (packet->version == 0) | |
1882 | { | |
1883 | zlog_info ("version 0 with command %d received.", packet->command); | |
1884 | rip_peer_bad_packet (&from); | |
1885 | return -1; | |
1886 | } | |
1887 | ||
1888 | /* Dump RIP packet. */ | |
1889 | if (IS_RIP_DEBUG_RECV) | |
1890 | rip_packet_dump (packet, len, "RECV"); | |
1891 | ||
1892 | /* RIP version adjust. This code should rethink now. RFC1058 says | |
1893 | that "Version 1 implementations are to ignore this extra data and | |
1894 | process only the fields specified in this document.". So RIPv3 | |
1895 | packet should be treated as RIPv1 ignoring must be zero field. */ | |
1896 | if (packet->version > RIPv2) | |
1897 | packet->version = RIPv2; | |
1898 | ||
1899 | /* Is RIP running or is this RIP neighbor ?*/ | |
1900 | ri = ifp->info; | |
1901 | if (! ri->running && ! rip_neighbor_lookup (&from)) | |
1902 | { | |
1903 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1904 | zlog_debug ("RIP is not enabled on interface %s.", ifp->name); |
718e3744 | 1905 | rip_peer_bad_packet (&from); |
1906 | return -1; | |
1907 | } | |
1908 | ||
15a2b089 | 1909 | /* RIP Version check. RFC2453, 4.6 and 5.1 */ |
3e557ae1 PJ |
1910 | vrecv = ((ri->ri_receive == RI_RIP_UNSPEC) ? |
1911 | rip->version_recv : ri->ri_receive); | |
6aec4b41 RW |
1912 | if (vrecv == RI_RIP_VERSION_NONE || |
1913 | ((packet->version == RIPv1) && !(vrecv & RIPv1)) || | |
1914 | ((packet->version == RIPv2) && !(vrecv & RIPv2))) | |
15a2b089 PJ |
1915 | { |
1916 | if (IS_RIP_DEBUG_PACKET) | |
1917 | zlog_debug (" packet's v%d doesn't fit to if version spec", | |
1918 | packet->version); | |
1919 | rip_peer_bad_packet (&from); | |
1920 | return -1; | |
1921 | } | |
1922 | ||
718e3744 | 1923 | /* RFC2453 5.2 If the router is not configured to authenticate RIP-2 |
1924 | messages, then RIP-1 and unauthenticated RIP-2 messages will be | |
1925 | accepted; authenticated RIP-2 messages shall be discarded. */ | |
718e3744 | 1926 | if ((ri->auth_type == RIP_NO_AUTH) |
1927 | && rtenum | |
ca5e516c | 1928 | && (packet->version == RIPv2) |
1929 | && (packet->rte->family == htons(RIP_FAMILY_AUTH))) | |
718e3744 | 1930 | { |
1931 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 1932 | zlog_debug ("packet RIPv%d is dropped because authentication disabled", |
718e3744 | 1933 | packet->version); |
1934 | rip_peer_bad_packet (&from); | |
1935 | return -1; | |
1936 | } | |
15a2b089 PJ |
1937 | |
1938 | /* RFC: | |
1939 | If the router is configured to authenticate RIP-2 messages, then | |
718e3744 | 1940 | RIP-1 messages and RIP-2 messages which pass authentication |
1941 | testing shall be accepted; unauthenticated and failed | |
1942 | authentication RIP-2 messages shall be discarded. For maximum | |
1943 | security, RIP-1 messages should be ignored when authentication is | |
1944 | in use (see section 4.1); otherwise, the routing information from | |
1945 | authenticated messages will be propagated by RIP-1 routers in an | |
15a2b089 PJ |
1946 | unauthenticated manner. |
1947 | */ | |
1948 | /* We make an exception for RIPv1 REQUEST packets, to which we'll | |
1949 | * always reply regardless of authentication settings, because: | |
1950 | * | |
1951 | * - if there other authorised routers on-link, the REQUESTor can | |
1952 | * passively obtain the routing updates anyway | |
1953 | * - if there are no other authorised routers on-link, RIP can | |
1954 | * easily be disabled for the link to prevent giving out information | |
1955 | * on state of this routers RIP routing table.. | |
1956 | * | |
1957 | * I.e. if RIPv1 has any place anymore these days, it's as a very | |
1958 | * simple way to distribute routing information (e.g. to embedded | |
1959 | * hosts / appliances) and the ability to give out RIPv1 | |
1960 | * routing-information freely, while still requiring RIPv2 | |
1961 | * authentication for any RESPONSEs might be vaguely useful. | |
1962 | */ | |
1963 | if (ri->auth_type != RIP_NO_AUTH | |
1964 | && packet->version == RIPv1) | |
718e3744 | 1965 | { |
15a2b089 PJ |
1966 | /* Discard RIPv1 messages other than REQUESTs */ |
1967 | if (packet->command != RIP_REQUEST) | |
1968 | { | |
1969 | if (IS_RIP_DEBUG_PACKET) | |
1970 | zlog_debug ("RIPv1" " dropped because authentication enabled"); | |
1971 | rip_peer_bad_packet (&from); | |
1972 | return -1; | |
1973 | } | |
1974 | } | |
1975 | else if (ri->auth_type != RIP_NO_AUTH) | |
1976 | { | |
1977 | const char *auth_desc; | |
1978 | ||
1979 | if (rtenum == 0) | |
1980 | { | |
1981 | /* There definitely is no authentication in the packet. */ | |
1982 | if (IS_RIP_DEBUG_PACKET) | |
1983 | zlog_debug ("RIPv2 authentication failed: no auth RTE in packet"); | |
1984 | rip_peer_bad_packet (&from); | |
1985 | return -1; | |
1986 | } | |
1987 | ||
1988 | /* First RTE must be an Authentication Family RTE */ | |
1989 | if (packet->rte->family != htons(RIP_FAMILY_AUTH)) | |
1990 | { | |
1991 | if (IS_RIP_DEBUG_PACKET) | |
1992 | zlog_debug ("RIPv2" " dropped because authentication enabled"); | |
718e3744 | 1993 | rip_peer_bad_packet (&from); |
1994 | return -1; | |
15a2b089 PJ |
1995 | } |
1996 | ||
718e3744 | 1997 | /* Check RIPv2 authentication. */ |
15a2b089 PJ |
1998 | switch (ntohs(packet->rte->tag)) |
1999 | { | |
2000 | case RIP_AUTH_SIMPLE_PASSWORD: | |
2001 | auth_desc = "simple"; | |
2002 | ret = rip_auth_simple_password (packet->rte, &from, ifp); | |
2003 | break; | |
2004 | ||
2005 | case RIP_AUTH_MD5: | |
2006 | auth_desc = "MD5"; | |
2007 | ret = rip_auth_md5 (packet, &from, len, ifp); | |
2008 | /* Reset RIP packet length to trim MD5 data. */ | |
2009 | len = ret; | |
2010 | break; | |
2011 | ||
2012 | default: | |
2013 | ret = 0; | |
2014 | auth_desc = "unknown type"; | |
2015 | if (IS_RIP_DEBUG_PACKET) | |
2016 | zlog_debug ("RIPv2 Unknown authentication type %d", | |
2017 | ntohs (packet->rte->tag)); | |
2018 | } | |
2019 | ||
2020 | if (ret) | |
2021 | { | |
2022 | if (IS_RIP_DEBUG_PACKET) | |
2023 | zlog_debug ("RIPv2 %s authentication success", auth_desc); | |
2024 | } | |
2025 | else | |
2026 | { | |
2027 | if (IS_RIP_DEBUG_PACKET) | |
2028 | zlog_debug ("RIPv2 %s authentication failure", auth_desc); | |
2029 | rip_peer_bad_packet (&from); | |
2030 | return -1; | |
2031 | } | |
718e3744 | 2032 | } |
2033 | ||
2034 | /* Process each command. */ | |
2035 | switch (packet->command) | |
2036 | { | |
2037 | case RIP_RESPONSE: | |
c49ad8f1 | 2038 | rip_response_process (packet, len, &from, ifc); |
718e3744 | 2039 | break; |
2040 | case RIP_REQUEST: | |
2041 | case RIP_POLL: | |
c49ad8f1 | 2042 | rip_request_process (packet, len, &from, ifc); |
718e3744 | 2043 | break; |
2044 | case RIP_TRACEON: | |
2045 | case RIP_TRACEOFF: | |
2046 | zlog_info ("Obsolete command %s received, please sent it to routed", | |
56b40679 | 2047 | lookup_msg (rip_msg, packet->command, NULL)); |
718e3744 | 2048 | rip_peer_bad_packet (&from); |
2049 | break; | |
2050 | case RIP_POLL_ENTRY: | |
2051 | zlog_info ("Obsolete command %s received", | |
56b40679 | 2052 | lookup_msg (rip_msg, packet->command, NULL)); |
718e3744 | 2053 | rip_peer_bad_packet (&from); |
2054 | break; | |
2055 | default: | |
2056 | zlog_info ("Unknown RIP command %d received", packet->command); | |
2057 | rip_peer_bad_packet (&from); | |
2058 | break; | |
2059 | } | |
2060 | ||
2061 | return len; | |
2062 | } | |
2063 | ||
718e3744 | 2064 | /* Write routing table entry to the stream and return next index of |
2065 | the routing table entry in the stream. */ | |
dc63bfd4 | 2066 | static int |
718e3744 | 2067 | rip_write_rte (int num, struct stream *s, struct prefix_ipv4 *p, |
b14ee00b | 2068 | u_char version, struct rip_info *rinfo) |
718e3744 | 2069 | { |
2070 | struct in_addr mask; | |
718e3744 | 2071 | |
2072 | /* Write routing table entry. */ | |
2073 | if (version == RIPv1) | |
2074 | { | |
2075 | stream_putw (s, AF_INET); | |
2076 | stream_putw (s, 0); | |
2077 | stream_put_ipv4 (s, p->prefix.s_addr); | |
2078 | stream_put_ipv4 (s, 0); | |
2079 | stream_put_ipv4 (s, 0); | |
2080 | stream_putl (s, rinfo->metric_out); | |
2081 | } | |
2082 | else | |
2083 | { | |
2084 | masklen2ip (p->prefixlen, &mask); | |
2085 | ||
2086 | stream_putw (s, AF_INET); | |
16705130 | 2087 | stream_putw (s, rinfo->tag_out); |
718e3744 | 2088 | stream_put_ipv4 (s, p->prefix.s_addr); |
2089 | stream_put_ipv4 (s, mask.s_addr); | |
2090 | stream_put_ipv4 (s, rinfo->nexthop_out.s_addr); | |
2091 | stream_putl (s, rinfo->metric_out); | |
2092 | } | |
2093 | ||
2094 | return ++num; | |
2095 | } | |
2096 | ||
2097 | /* Send update to the ifp or spcified neighbor. */ | |
2098 | void | |
c49ad8f1 | 2099 | rip_output_process (struct connected *ifc, struct sockaddr_in *to, |
2100 | int route_type, u_char version) | |
718e3744 | 2101 | { |
2102 | int ret; | |
2103 | struct stream *s; | |
2104 | struct route_node *rp; | |
2105 | struct rip_info *rinfo; | |
2106 | struct rip_interface *ri; | |
2107 | struct prefix_ipv4 *p; | |
2108 | struct prefix_ipv4 classfull; | |
727d104b | 2109 | struct prefix_ipv4 ifaddrclass; |
b14ee00b | 2110 | struct key *key = NULL; |
2111 | /* this might need to made dynamic if RIP ever supported auth methods | |
2112 | with larger key string sizes */ | |
2113 | char auth_str[RIP_AUTH_SIMPLE_SIZE]; | |
dc63bfd4 | 2114 | size_t doff = 0; /* offset of digest offset field */ |
2c61ae37 | 2115 | int num = 0; |
718e3744 | 2116 | int rtemax; |
01d0908a | 2117 | int subnetted = 0; |
bce8e868 LF |
2118 | struct list *list = NULL; |
2119 | struct listnode *listnode = NULL; | |
718e3744 | 2120 | |
2121 | /* Logging output event. */ | |
2122 | if (IS_RIP_DEBUG_EVENT) | |
2123 | { | |
2124 | if (to) | |
5d6c3779 | 2125 | zlog_debug ("update routes to neighbor %s", inet_ntoa (to->sin_addr)); |
718e3744 | 2126 | else |
5d6c3779 | 2127 | zlog_debug ("update routes on interface %s ifindex %d", |
c49ad8f1 | 2128 | ifc->ifp->name, ifc->ifp->ifindex); |
718e3744 | 2129 | } |
2130 | ||
2131 | /* Set output stream. */ | |
2132 | s = rip->obuf; | |
2133 | ||
2134 | /* Reset stream and RTE counter. */ | |
2135 | stream_reset (s); | |
6a7cff75 | 2136 | rtemax = RIP_MAX_RTE; |
718e3744 | 2137 | |
2138 | /* Get RIP interface. */ | |
c49ad8f1 | 2139 | ri = ifc->ifp->info; |
718e3744 | 2140 | |
2141 | /* If output interface is in simple password authentication mode, we | |
2142 | need space for authentication data. */ | |
2143 | if (ri->auth_type == RIP_AUTH_SIMPLE_PASSWORD) | |
2144 | rtemax -= 1; | |
2145 | ||
2146 | /* If output interface is in MD5 authentication mode, we need space | |
2147 | for authentication header and data. */ | |
2148 | if (ri->auth_type == RIP_AUTH_MD5) | |
2149 | rtemax -= 2; | |
2150 | ||
2151 | /* If output interface is in simple password authentication mode | |
2152 | and string or keychain is specified we need space for auth. data */ | |
b14ee00b | 2153 | if (ri->auth_type != RIP_NO_AUTH) |
718e3744 | 2154 | { |
2155 | if (ri->key_chain) | |
2156 | { | |
2157 | struct keychain *keychain; | |
2158 | ||
2159 | keychain = keychain_lookup (ri->key_chain); | |
2160 | if (keychain) | |
b14ee00b | 2161 | key = key_lookup_for_send (keychain); |
718e3744 | 2162 | } |
b14ee00b | 2163 | /* to be passed to auth functions later */ |
2164 | rip_auth_prepare_str_send (ri, key, auth_str, RIP_AUTH_SIMPLE_SIZE); | |
718e3744 | 2165 | } |
2166 | ||
727d104b | 2167 | if (version == RIPv1) |
2168 | { | |
c49ad8f1 | 2169 | memcpy (&ifaddrclass, ifc->address, sizeof (struct prefix_ipv4)); |
727d104b | 2170 | apply_classful_mask_ipv4 (&ifaddrclass); |
2171 | subnetted = 0; | |
c49ad8f1 | 2172 | if (ifc->address->prefixlen > ifaddrclass.prefixlen) |
01d0908a | 2173 | subnetted = 1; |
727d104b | 2174 | } |
2175 | ||
718e3744 | 2176 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) |
bce8e868 | 2177 | if ((list = rp->info) != NULL && listcount (list) != 0) |
718e3744 | 2178 | { |
bce8e868 | 2179 | rinfo = listgetdata (listhead (list)); |
727d104b | 2180 | /* For RIPv1, if we are subnetted, output subnets in our network */ |
2181 | /* that have the same mask as the output "interface". For other */ | |
2182 | /* networks, only the classfull version is output. */ | |
718e3744 | 2183 | |
2184 | if (version == RIPv1) | |
2185 | { | |
727d104b | 2186 | p = (struct prefix_ipv4 *) &rp->p; |
718e3744 | 2187 | |
2188 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 2189 | zlog_debug("RIPv1 mask check, %s/%d considered for output", |
727d104b | 2190 | inet_ntoa (rp->p.u.prefix4), rp->p.prefixlen); |
718e3744 | 2191 | |
727d104b | 2192 | if (subnetted && |
2193 | prefix_match ((struct prefix *) &ifaddrclass, &rp->p)) | |
2194 | { | |
c49ad8f1 | 2195 | if ((ifc->address->prefixlen != rp->p.prefixlen) && |
727d104b | 2196 | (rp->p.prefixlen != 32)) |
2197 | continue; | |
2198 | } | |
2199 | else | |
2200 | { | |
2201 | memcpy (&classfull, &rp->p, sizeof(struct prefix_ipv4)); | |
2202 | apply_classful_mask_ipv4(&classfull); | |
2203 | if (rp->p.u.prefix4.s_addr != 0 && | |
2204 | classfull.prefixlen != rp->p.prefixlen) | |
2205 | continue; | |
2206 | } | |
718e3744 | 2207 | if (IS_RIP_DEBUG_PACKET) |
5d6c3779 | 2208 | zlog_debug("RIPv1 mask check, %s/%d made it through", |
727d104b | 2209 | inet_ntoa (rp->p.u.prefix4), rp->p.prefixlen); |
718e3744 | 2210 | } |
2211 | else | |
2212 | p = (struct prefix_ipv4 *) &rp->p; | |
2213 | ||
2214 | /* Apply output filters. */ | |
7c989d74 | 2215 | ret = rip_filter (RIP_FILTER_OUT, p, ri); |
718e3744 | 2216 | if (ret < 0) |
2217 | continue; | |
2218 | ||
2219 | /* Changed route only output. */ | |
2220 | if (route_type == rip_changed_route && | |
2221 | (! (rinfo->flags & RIP_RTF_CHANGED))) | |
2222 | continue; | |
2223 | ||
2224 | /* Split horizon. */ | |
2225 | /* if (split_horizon == rip_split_horizon) */ | |
16705130 | 2226 | if (ri->split_horizon == RIP_SPLIT_HORIZON) |
718e3744 | 2227 | { |
42d14d98 | 2228 | /* |
2229 | * We perform split horizon for RIP and connected route. | |
2230 | * For rip routes, we want to suppress the route if we would | |
2231 | * end up sending the route back on the interface that we | |
2232 | * learned it from, with a higher metric. For connected routes, | |
2233 | * we suppress the route if the prefix is a subset of the | |
2234 | * source address that we are going to use for the packet | |
2235 | * (in order to handle the case when multiple subnets are | |
2236 | * configured on the same interface). | |
2237 | */ | |
bce8e868 LF |
2238 | int suppress = 0; |
2239 | struct rip_info *tmp_rinfo = NULL; | |
2240 | ||
2241 | for (ALL_LIST_ELEMENTS_RO (list, listnode, tmp_rinfo)) | |
2242 | if (tmp_rinfo->type == ZEBRA_ROUTE_RIP && | |
2243 | tmp_rinfo->ifindex == ifc->ifp->ifindex) | |
2244 | { | |
2245 | suppress = 1; | |
2246 | break; | |
2247 | } | |
2248 | ||
2249 | if (!suppress && rinfo->type == ZEBRA_ROUTE_CONNECT && | |
c49ad8f1 | 2250 | prefix_match((struct prefix *)p, ifc->address)) |
bce8e868 LF |
2251 | suppress = 1; |
2252 | ||
2253 | if (suppress) | |
718e3744 | 2254 | continue; |
2255 | } | |
2256 | ||
2257 | /* Preparation for route-map. */ | |
2258 | rinfo->metric_set = 0; | |
2259 | rinfo->nexthop_out.s_addr = 0; | |
2260 | rinfo->metric_out = rinfo->metric; | |
16705130 | 2261 | rinfo->tag_out = rinfo->tag; |
c49ad8f1 | 2262 | rinfo->ifindex_out = ifc->ifp->ifindex; |
718e3744 | 2263 | |
16705130 | 2264 | /* In order to avoid some local loops, |
2265 | * if the RIP route has a nexthop via this interface, keep the nexthop, | |
2266 | * otherwise set it to 0. The nexthop should not be propagated | |
2267 | * beyond the local broadcast/multicast area in order | |
2268 | * to avoid an IGP multi-level recursive look-up. | |
2269 | * see (4.4) | |
2270 | */ | |
c49ad8f1 | 2271 | if (rinfo->ifindex == ifc->ifp->ifindex) |
718e3744 | 2272 | rinfo->nexthop_out = rinfo->nexthop; |
16705130 | 2273 | |
2274 | /* Interface route-map */ | |
2275 | if (ri->routemap[RIP_FILTER_OUT]) | |
2276 | { | |
2277 | ret = route_map_apply (ri->routemap[RIP_FILTER_OUT], | |
2278 | (struct prefix *) p, RMAP_RIP, | |
2279 | rinfo); | |
2280 | ||
2281 | if (ret == RMAP_DENYMATCH) | |
2282 | { | |
2283 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 2284 | zlog_debug ("RIP %s/%d is filtered by route-map out", |
d904a9fc DS |
2285 | inet_ntoa (p->prefix), p->prefixlen); |
2286 | continue; | |
16705130 | 2287 | } |
2288 | } | |
718e3744 | 2289 | |
16705130 | 2290 | /* Apply redistribute route map - continue, if deny */ |
718e3744 | 2291 | if (rip->route_map[rinfo->type].name |
2292 | && rinfo->sub_type != RIP_ROUTE_INTERFACE) | |
2293 | { | |
2294 | ret = route_map_apply (rip->route_map[rinfo->type].map, | |
2295 | (struct prefix *)p, RMAP_RIP, rinfo); | |
2296 | ||
2297 | if (ret == RMAP_DENYMATCH) | |
2298 | { | |
2299 | if (IS_RIP_DEBUG_PACKET) | |
5d6c3779 | 2300 | zlog_debug ("%s/%d is filtered by route-map", |
718e3744 | 2301 | inet_ntoa (p->prefix), p->prefixlen); |
2302 | continue; | |
2303 | } | |
2304 | } | |
2305 | ||
2306 | /* When route-map does not set metric. */ | |
2307 | if (! rinfo->metric_set) | |
2308 | { | |
2309 | /* If redistribute metric is set. */ | |
2310 | if (rip->route_map[rinfo->type].metric_config | |
2311 | && rinfo->metric != RIP_METRIC_INFINITY) | |
2312 | { | |
2313 | rinfo->metric_out = rip->route_map[rinfo->type].metric; | |
2314 | } | |
2315 | else | |
2316 | { | |
2317 | /* If the route is not connected or localy generated | |
2318 | one, use default-metric value*/ | |
2319 | if (rinfo->type != ZEBRA_ROUTE_RIP | |
2320 | && rinfo->type != ZEBRA_ROUTE_CONNECT | |
2321 | && rinfo->metric != RIP_METRIC_INFINITY) | |
2322 | rinfo->metric_out = rip->default_metric; | |
2323 | } | |
2324 | } | |
2325 | ||
2326 | /* Apply offset-list */ | |
2327 | if (rinfo->metric != RIP_METRIC_INFINITY) | |
c49ad8f1 | 2328 | rip_offset_list_apply_out (p, ifc->ifp, &rinfo->metric_out); |
718e3744 | 2329 | |
2330 | if (rinfo->metric_out > RIP_METRIC_INFINITY) | |
2331 | rinfo->metric_out = RIP_METRIC_INFINITY; | |
16705130 | 2332 | |
2333 | /* Perform split-horizon with poisoned reverse | |
2334 | * for RIP and connected routes. | |
2335 | **/ | |
2336 | if (ri->split_horizon == RIP_SPLIT_HORIZON_POISONED_REVERSE) { | |
42d14d98 | 2337 | /* |
2338 | * We perform split horizon for RIP and connected route. | |
2339 | * For rip routes, we want to suppress the route if we would | |
2340 | * end up sending the route back on the interface that we | |
2341 | * learned it from, with a higher metric. For connected routes, | |
2342 | * we suppress the route if the prefix is a subset of the | |
2343 | * source address that we are going to use for the packet | |
2344 | * (in order to handle the case when multiple subnets are | |
2345 | * configured on the same interface). | |
2346 | */ | |
bce8e868 LF |
2347 | struct rip_info *tmp_rinfo = NULL; |
2348 | ||
2349 | for (ALL_LIST_ELEMENTS_RO (list, listnode, tmp_rinfo)) | |
2350 | if (tmp_rinfo->type == ZEBRA_ROUTE_RIP && | |
2351 | tmp_rinfo->ifindex == ifc->ifp->ifindex) | |
2352 | rinfo->metric_out = RIP_METRIC_INFINITY; | |
2353 | if (tmp_rinfo->type == ZEBRA_ROUTE_CONNECT && | |
c49ad8f1 | 2354 | prefix_match((struct prefix *)p, ifc->address)) |
bce8e868 | 2355 | rinfo->metric_out = RIP_METRIC_INFINITY; |
16705130 | 2356 | } |
b14ee00b | 2357 | |
2358 | /* Prepare preamble, auth headers, if needs be */ | |
2359 | if (num == 0) | |
2360 | { | |
2361 | stream_putc (s, RIP_RESPONSE); | |
2362 | stream_putc (s, version); | |
2363 | stream_putw (s, 0); | |
2364 | ||
0cb8a01c | 2365 | /* auth header for !v1 && !no_auth */ |
2366 | if ( (ri->auth_type != RIP_NO_AUTH) && (version != RIPv1) ) | |
b14ee00b | 2367 | doff = rip_auth_header_write (s, ri, key, auth_str, |
2368 | RIP_AUTH_SIMPLE_SIZE); | |
2369 | } | |
2370 | ||
718e3744 | 2371 | /* Write RTE to the stream. */ |
b14ee00b | 2372 | num = rip_write_rte (num, s, p, version, rinfo); |
718e3744 | 2373 | if (num == rtemax) |
2374 | { | |
2375 | if (version == RIPv2 && ri->auth_type == RIP_AUTH_MD5) | |
b14ee00b | 2376 | rip_auth_md5_set (s, ri, doff, auth_str, RIP_AUTH_SIMPLE_SIZE); |
718e3744 | 2377 | |
2378 | ret = rip_send_packet (STREAM_DATA (s), stream_get_endp (s), | |
c49ad8f1 | 2379 | to, ifc); |
718e3744 | 2380 | |
2381 | if (ret >= 0 && IS_RIP_DEBUG_SEND) | |
2382 | rip_packet_dump ((struct rip_packet *)STREAM_DATA (s), | |
2383 | stream_get_endp(s), "SEND"); | |
2384 | num = 0; | |
2385 | stream_reset (s); | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | /* Flush unwritten RTE. */ | |
2390 | if (num != 0) | |
2391 | { | |
2392 | if (version == RIPv2 && ri->auth_type == RIP_AUTH_MD5) | |
b14ee00b | 2393 | rip_auth_md5_set (s, ri, doff, auth_str, RIP_AUTH_SIMPLE_SIZE); |
718e3744 | 2394 | |
c49ad8f1 | 2395 | ret = rip_send_packet (STREAM_DATA (s), stream_get_endp (s), to, ifc); |
718e3744 | 2396 | |
2397 | if (ret >= 0 && IS_RIP_DEBUG_SEND) | |
2398 | rip_packet_dump ((struct rip_packet *)STREAM_DATA (s), | |
2399 | stream_get_endp (s), "SEND"); | |
718e3744 | 2400 | stream_reset (s); |
2401 | } | |
2402 | ||
2403 | /* Statistics updates. */ | |
2404 | ri->sent_updates++; | |
2405 | } | |
2406 | ||
2407 | /* Send RIP packet to the interface. */ | |
dc63bfd4 | 2408 | static void |
c49ad8f1 | 2409 | rip_update_interface (struct connected *ifc, u_char version, int route_type) |
718e3744 | 2410 | { |
f90310cf RW |
2411 | struct interface *ifp = ifc->ifp; |
2412 | struct rip_interface *ri = ifp->info; | |
718e3744 | 2413 | struct sockaddr_in to; |
2414 | ||
2415 | /* When RIP version is 2 and multicast enable interface. */ | |
f90310cf | 2416 | if (version == RIPv2 && !ri->v2_broadcast && if_is_multicast (ifp)) |
718e3744 | 2417 | { |
2418 | if (IS_RIP_DEBUG_EVENT) | |
f90310cf | 2419 | zlog_debug ("multicast announce on %s ", ifp->name); |
718e3744 | 2420 | |
c49ad8f1 | 2421 | rip_output_process (ifc, NULL, route_type, version); |
718e3744 | 2422 | return; |
2423 | } | |
c49ad8f1 | 2424 | |
718e3744 | 2425 | /* If we can't send multicast packet, send it with unicast. */ |
f90310cf | 2426 | if (if_is_broadcast (ifp) || if_is_pointopoint (ifp)) |
718e3744 | 2427 | { |
c49ad8f1 | 2428 | if (ifc->address->family == AF_INET) |
2429 | { | |
2430 | /* Destination address and port setting. */ | |
2431 | memset (&to, 0, sizeof (struct sockaddr_in)); | |
2432 | if (ifc->destination) | |
e4529636 | 2433 | /* use specified broadcast or peer destination addr */ |
c49ad8f1 | 2434 | to.sin_addr = ifc->destination->u.prefix4; |
e4529636 | 2435 | else if (ifc->address->prefixlen < IPV4_MAX_PREFIXLEN) |
c49ad8f1 | 2436 | /* calculate the appropriate broadcast address */ |
2437 | to.sin_addr.s_addr = | |
2438 | ipv4_broadcast_addr(ifc->address->u.prefix4.s_addr, | |
2439 | ifc->address->prefixlen); | |
e4529636 AS |
2440 | else |
2441 | /* do not know where to send the packet */ | |
2442 | return; | |
c49ad8f1 | 2443 | to.sin_port = htons (RIP_PORT_DEFAULT); |
718e3744 | 2444 | |
c49ad8f1 | 2445 | if (IS_RIP_DEBUG_EVENT) |
e4529636 AS |
2446 | zlog_debug("%s announce to %s on %s", |
2447 | CONNECTED_PEER(ifc) ? "unicast" : "broadcast", | |
f90310cf | 2448 | inet_ntoa (to.sin_addr), ifp->name); |
718e3744 | 2449 | |
c49ad8f1 | 2450 | rip_output_process (ifc, &to, route_type, version); |
2451 | } | |
718e3744 | 2452 | } |
2453 | } | |
2454 | ||
2455 | /* Update send to all interface and neighbor. */ | |
dc63bfd4 | 2456 | static void |
718e3744 | 2457 | rip_update_process (int route_type) |
2458 | { | |
1eb8ef25 | 2459 | struct listnode *node; |
2460 | struct listnode *ifnode, *ifnnode; | |
cc1131ab | 2461 | struct connected *connected; |
718e3744 | 2462 | struct interface *ifp; |
2463 | struct rip_interface *ri; | |
2464 | struct route_node *rp; | |
2465 | struct sockaddr_in to; | |
bd40c341 | 2466 | struct prefix *p; |
718e3744 | 2467 | |
2468 | /* Send RIP update to each interface. */ | |
b2d7c082 | 2469 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), node, ifp)) |
718e3744 | 2470 | { |
718e3744 | 2471 | if (if_is_loopback (ifp)) |
2472 | continue; | |
2473 | ||
2e3b2e47 | 2474 | if (! if_is_operative (ifp)) |
718e3744 | 2475 | continue; |
2476 | ||
2477 | /* Fetch RIP interface information. */ | |
2478 | ri = ifp->info; | |
2479 | ||
2480 | /* When passive interface is specified, suppress announce to the | |
2481 | interface. */ | |
2482 | if (ri->passive) | |
2483 | continue; | |
2484 | ||
2485 | if (ri->running) | |
2486 | { | |
b9d92881 AS |
2487 | /* |
2488 | * If there is no version configuration in the interface, | |
2489 | * use rip's version setting. | |
2490 | */ | |
2491 | int vsend = ((ri->ri_send == RI_RIP_UNSPEC) ? | |
2492 | rip->version_send : ri->ri_send); | |
2493 | ||
718e3744 | 2494 | if (IS_RIP_DEBUG_EVENT) |
b9d92881 | 2495 | zlog_debug("SEND UPDATE to %s ifindex %d", |
85b123a4 | 2496 | ifp->name, ifp->ifindex); |
718e3744 | 2497 | |
cc1131ab | 2498 | /* send update on each connected network */ |
1eb8ef25 | 2499 | for (ALL_LIST_ELEMENTS (ifp->connected, ifnode, ifnnode, connected)) |
cc1131ab | 2500 | { |
b9d92881 AS |
2501 | if (connected->address->family == AF_INET) |
2502 | { | |
2503 | if (vsend & RIPv1) | |
2504 | rip_update_interface (connected, RIPv1, route_type); | |
2505 | if ((vsend & RIPv2) && if_is_multicast(ifp)) | |
2506 | rip_update_interface (connected, RIPv2, route_type); | |
2507 | } | |
2508 | } | |
718e3744 | 2509 | } |
2510 | } | |
2511 | ||
2512 | /* RIP send updates to each neighbor. */ | |
2513 | for (rp = route_top (rip->neighbor); rp; rp = route_next (rp)) | |
2514 | if (rp->info != NULL) | |
2515 | { | |
bd40c341 | 2516 | p = &rp->p; |
718e3744 | 2517 | |
95af5f13 | 2518 | connected = if_lookup_address (&p->u.prefix4, AF_INET, VRF_DEFAULT); |
b10ce841 | 2519 | if (! connected) |
718e3744 | 2520 | { |
c49ad8f1 | 2521 | zlog_warn ("Neighbor %s doesnt have connected interface!", |
bd40c341 | 2522 | inet_ntoa (p->u.prefix4)); |
718e3744 | 2523 | continue; |
2524 | } | |
c49ad8f1 | 2525 | |
718e3744 | 2526 | /* Set destination address and port */ |
2527 | memset (&to, 0, sizeof (struct sockaddr_in)); | |
bd40c341 | 2528 | to.sin_addr = p->u.prefix4; |
718e3744 | 2529 | to.sin_port = htons (RIP_PORT_DEFAULT); |
2530 | ||
2531 | /* RIP version is rip's configuration. */ | |
c49ad8f1 | 2532 | rip_output_process (connected, &to, route_type, rip->version_send); |
718e3744 | 2533 | } |
2534 | } | |
2535 | ||
2536 | /* RIP's periodical timer. */ | |
dc63bfd4 | 2537 | static int |
718e3744 | 2538 | rip_update (struct thread *t) |
2539 | { | |
2540 | /* Clear timer pointer. */ | |
2541 | rip->t_update = NULL; | |
2542 | ||
2543 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 2544 | zlog_debug ("update timer fire!"); |
718e3744 | 2545 | |
2546 | /* Process update output. */ | |
2547 | rip_update_process (rip_all_route); | |
2548 | ||
2549 | /* Triggered updates may be suppressed if a regular update is due by | |
2550 | the time the triggered update would be sent. */ | |
8578874d | 2551 | RIP_TIMER_OFF (rip->t_triggered_interval); |
718e3744 | 2552 | rip->trigger = 0; |
2553 | ||
2554 | /* Register myself. */ | |
2555 | rip_event (RIP_UPDATE_EVENT, 0); | |
2556 | ||
2557 | return 0; | |
2558 | } | |
2559 | ||
2560 | /* Walk down the RIP routing table then clear changed flag. */ | |
dc63bfd4 | 2561 | static void |
216565ab | 2562 | rip_clear_changed_flag (void) |
718e3744 | 2563 | { |
2564 | struct route_node *rp; | |
bce8e868 LF |
2565 | struct rip_info *rinfo = NULL; |
2566 | struct list *list = NULL; | |
2567 | struct listnode *listnode = NULL; | |
718e3744 | 2568 | |
2569 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) | |
bce8e868 LF |
2570 | if ((list = rp->info) != NULL) |
2571 | for (ALL_LIST_ELEMENTS_RO (list, listnode, rinfo)) | |
2572 | { | |
2573 | UNSET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
2574 | /* This flag can be set only on the first entry. */ | |
2575 | break; | |
2576 | } | |
718e3744 | 2577 | } |
2578 | ||
2579 | /* Triggered update interval timer. */ | |
dc63bfd4 | 2580 | static int |
718e3744 | 2581 | rip_triggered_interval (struct thread *t) |
2582 | { | |
2583 | int rip_triggered_update (struct thread *); | |
2584 | ||
2585 | rip->t_triggered_interval = NULL; | |
2586 | ||
2587 | if (rip->trigger) | |
2588 | { | |
2589 | rip->trigger = 0; | |
2590 | rip_triggered_update (t); | |
2591 | } | |
2592 | return 0; | |
2593 | } | |
2594 | ||
2595 | /* Execute triggered update. */ | |
dc63bfd4 | 2596 | static int |
718e3744 | 2597 | rip_triggered_update (struct thread *t) |
2598 | { | |
2599 | int interval; | |
2600 | ||
2601 | /* Clear thred pointer. */ | |
2602 | rip->t_triggered_update = NULL; | |
2603 | ||
2604 | /* Cancel interval timer. */ | |
8578874d | 2605 | RIP_TIMER_OFF (rip->t_triggered_interval); |
718e3744 | 2606 | rip->trigger = 0; |
2607 | ||
2608 | /* Logging triggered update. */ | |
2609 | if (IS_RIP_DEBUG_EVENT) | |
5d6c3779 | 2610 | zlog_debug ("triggered update!"); |
718e3744 | 2611 | |
2612 | /* Split Horizon processing is done when generating triggered | |
2613 | updates as well as normal updates (see section 2.6). */ | |
2614 | rip_update_process (rip_changed_route); | |
2615 | ||
2616 | /* Once all of the triggered updates have been generated, the route | |
2617 | change flags should be cleared. */ | |
2618 | rip_clear_changed_flag (); | |
2619 | ||
2620 | /* After a triggered update is sent, a timer should be set for a | |
2621 | random interval between 1 and 5 seconds. If other changes that | |
2622 | would trigger updates occur before the timer expires, a single | |
2623 | update is triggered when the timer expires. */ | |
2624 | interval = (random () % 5) + 1; | |
2625 | ||
66e78ae6 QY |
2626 | rip->t_triggered_interval = NULL; |
2627 | thread_add_timer(master, rip_triggered_interval, NULL, interval, | |
2628 | &rip->t_triggered_interval); | |
718e3744 | 2629 | |
2630 | return 0; | |
2631 | } | |
2632 | ||
2633 | /* Withdraw redistributed route. */ | |
2634 | void | |
2635 | rip_redistribute_withdraw (int type) | |
2636 | { | |
2637 | struct route_node *rp; | |
bce8e868 LF |
2638 | struct rip_info *rinfo = NULL; |
2639 | struct list *list = NULL; | |
718e3744 | 2640 | |
2641 | if (!rip) | |
2642 | return; | |
2643 | ||
2644 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) | |
bce8e868 | 2645 | if ((list = rp->info) != NULL) |
718e3744 | 2646 | { |
bce8e868 | 2647 | rinfo = listgetdata (listhead (list)); |
718e3744 | 2648 | if (rinfo->type == type |
2649 | && rinfo->sub_type != RIP_ROUTE_INTERFACE) | |
2650 | { | |
2651 | /* Perform poisoned reverse. */ | |
2652 | rinfo->metric = RIP_METRIC_INFINITY; | |
2653 | RIP_TIMER_ON (rinfo->t_garbage_collect, | |
2654 | rip_garbage_collect, rip->garbage_time); | |
2655 | RIP_TIMER_OFF (rinfo->t_timeout); | |
2656 | rinfo->flags |= RIP_RTF_CHANGED; | |
2657 | ||
16705130 | 2658 | if (IS_RIP_DEBUG_EVENT) { |
2659 | struct prefix_ipv4 *p = (struct prefix_ipv4 *) &rp->p; | |
2660 | ||
5d6c3779 | 2661 | zlog_debug ("Poisone %s/%d on the interface %s with an infinity metric [withdraw]", |
baaea325 DS |
2662 | inet_ntoa(p->prefix), p->prefixlen, |
2663 | ifindex2ifname(rinfo->ifindex, VRF_DEFAULT)); | |
16705130 | 2664 | } |
2665 | ||
718e3744 | 2666 | rip_event (RIP_TRIGGERED_UPDATE, 0); |
2667 | } | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | /* Create new RIP instance and set it to global variable. */ | |
dc63bfd4 | 2672 | static int |
2673 | rip_create (void) | |
718e3744 | 2674 | { |
393deb9b | 2675 | rip = XCALLOC (MTYPE_RIP, sizeof (struct rip)); |
718e3744 | 2676 | |
2677 | /* Set initial value. */ | |
f38a471c | 2678 | rip->version_send = RI_RIP_VERSION_2; |
2679 | rip->version_recv = RI_RIP_VERSION_1_AND_2; | |
718e3744 | 2680 | rip->update_time = RIP_UPDATE_TIMER_DEFAULT; |
2681 | rip->timeout_time = RIP_TIMEOUT_TIMER_DEFAULT; | |
2682 | rip->garbage_time = RIP_GARBAGE_TIMER_DEFAULT; | |
2683 | rip->default_metric = RIP_DEFAULT_METRIC_DEFAULT; | |
2684 | ||
2685 | /* Initialize RIP routig table. */ | |
2686 | rip->table = route_table_init (); | |
2687 | rip->route = route_table_init (); | |
2688 | rip->neighbor = route_table_init (); | |
2689 | ||
2690 | /* Make output stream. */ | |
2691 | rip->obuf = stream_new (1500); | |
2692 | ||
2693 | /* Make socket. */ | |
ae735d2d | 2694 | rip->sock = rip_create_socket (); |
718e3744 | 2695 | if (rip->sock < 0) |
2696 | return rip->sock; | |
2697 | ||
2698 | /* Create read and timer thread. */ | |
2699 | rip_event (RIP_READ, rip->sock); | |
2700 | rip_event (RIP_UPDATE_EVENT, 1); | |
2701 | ||
f6eacff4 DL |
2702 | QOBJ_REG (rip, rip); |
2703 | ||
718e3744 | 2704 | return 0; |
2705 | } | |
2706 | ||
2707 | /* Sned RIP request to the destination. */ | |
2708 | int | |
2709 | rip_request_send (struct sockaddr_in *to, struct interface *ifp, | |
931cd54d | 2710 | u_char version, struct connected *connected) |
718e3744 | 2711 | { |
2712 | struct rte *rte; | |
2713 | struct rip_packet rip_packet; | |
1eb8ef25 | 2714 | struct listnode *node, *nnode; |
718e3744 | 2715 | |
2716 | memset (&rip_packet, 0, sizeof (rip_packet)); | |
2717 | ||
2718 | rip_packet.command = RIP_REQUEST; | |
2719 | rip_packet.version = version; | |
2720 | rte = rip_packet.rte; | |
2721 | rte->metric = htonl (RIP_METRIC_INFINITY); | |
2722 | ||
931cd54d | 2723 | if (connected) |
2724 | { | |
2725 | /* | |
2726 | * connected is only sent for ripv1 case, or when | |
2727 | * interface does not support multicast. Caller loops | |
2728 | * over each connected address for this case. | |
2729 | */ | |
11dde9c2 | 2730 | if (rip_send_packet ((u_char *) &rip_packet, sizeof (rip_packet), |
c49ad8f1 | 2731 | to, connected) != sizeof (rip_packet)) |
931cd54d | 2732 | return -1; |
2733 | else | |
2734 | return sizeof (rip_packet); | |
2735 | } | |
2736 | ||
cc1131ab | 2737 | /* send request on each connected network */ |
1eb8ef25 | 2738 | for (ALL_LIST_ELEMENTS (ifp->connected, node, nnode, connected)) |
cc1131ab | 2739 | { |
2740 | struct prefix_ipv4 *p; | |
2741 | ||
2742 | p = (struct prefix_ipv4 *) connected->address; | |
2743 | ||
2744 | if (p->family != AF_INET) | |
2745 | continue; | |
2746 | ||
11dde9c2 | 2747 | if (rip_send_packet ((u_char *) &rip_packet, sizeof (rip_packet), |
c49ad8f1 | 2748 | to, connected) != sizeof (rip_packet)) |
cc1131ab | 2749 | return -1; |
2750 | } | |
2751 | return sizeof (rip_packet); | |
718e3744 | 2752 | } |
6b0655a2 | 2753 | |
dc63bfd4 | 2754 | static int |
718e3744 | 2755 | rip_update_jitter (unsigned long time) |
2756 | { | |
239389ba | 2757 | #define JITTER_BOUND 4 |
2758 | /* We want to get the jitter to +/- 1/JITTER_BOUND the interval. | |
2759 | Given that, we cannot let time be less than JITTER_BOUND seconds. | |
2760 | The RIPv2 RFC says jitter should be small compared to | |
2761 | update_time. We consider 1/JITTER_BOUND to be small. | |
2762 | */ | |
2763 | ||
2764 | int jitter_input = time; | |
2765 | int jitter; | |
2766 | ||
2767 | if (jitter_input < JITTER_BOUND) | |
2768 | jitter_input = JITTER_BOUND; | |
2769 | ||
b06fd125 | 2770 | jitter = (((random () % ((jitter_input * 2) + 1)) - jitter_input)); |
239389ba | 2771 | |
2772 | return jitter/JITTER_BOUND; | |
718e3744 | 2773 | } |
2774 | ||
2775 | void | |
2776 | rip_event (enum rip_event event, int sock) | |
2777 | { | |
2778 | int jitter = 0; | |
2779 | ||
2780 | switch (event) | |
2781 | { | |
2782 | case RIP_READ: | |
66e78ae6 QY |
2783 | rip->t_read = NULL; |
2784 | thread_add_read(master, rip_read, NULL, sock, &rip->t_read); | |
718e3744 | 2785 | break; |
2786 | case RIP_UPDATE_EVENT: | |
8578874d | 2787 | RIP_TIMER_OFF (rip->t_update); |
718e3744 | 2788 | jitter = rip_update_jitter (rip->update_time); |
66e78ae6 QY |
2789 | thread_add_timer(master, rip_update, NULL, sock ? 2 : rip->update_time + jitter, |
2790 | &rip->t_update); | |
718e3744 | 2791 | break; |
2792 | case RIP_TRIGGERED_UPDATE: | |
2793 | if (rip->t_triggered_interval) | |
66e78ae6 | 2794 | rip->trigger = 1; |
ffa2c898 QY |
2795 | else thread_add_event(master, rip_triggered_update, NULL, 0, |
2796 | &rip->t_triggered_update); | |
718e3744 | 2797 | break; |
2798 | default: | |
2799 | break; | |
2800 | } | |
2801 | } | |
6b0655a2 | 2802 | |
505e5056 | 2803 | DEFUN_NOSH (router_rip, |
718e3744 | 2804 | router_rip_cmd, |
2805 | "router rip", | |
2806 | "Enable a routing process\n" | |
2807 | "Routing Information Protocol (RIP)\n") | |
2808 | { | |
2809 | int ret; | |
2810 | ||
2811 | /* If rip is not enabled before. */ | |
2812 | if (! rip) | |
2813 | { | |
2814 | ret = rip_create (); | |
2815 | if (ret < 0) | |
2816 | { | |
2817 | zlog_info ("Can't create RIP"); | |
f1a05de9 | 2818 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2819 | } |
2820 | } | |
cdc2d765 | 2821 | VTY_PUSH_CONTEXT(RIP_NODE, rip); |
718e3744 | 2822 | |
2823 | return CMD_SUCCESS; | |
2824 | } | |
2825 | ||
2826 | DEFUN (no_router_rip, | |
2827 | no_router_rip_cmd, | |
2828 | "no router rip", | |
2829 | NO_STR | |
2830 | "Enable a routing process\n" | |
2831 | "Routing Information Protocol (RIP)\n") | |
2832 | { | |
2833 | if (rip) | |
2834 | rip_clean (); | |
2835 | return CMD_SUCCESS; | |
2836 | } | |
2837 | ||
2838 | DEFUN (rip_version, | |
2839 | rip_version_cmd, | |
6147e2c6 | 2840 | "version (1-2)", |
718e3744 | 2841 | "Set routing protocol version\n" |
2842 | "version\n") | |
2843 | { | |
80fa0c69 | 2844 | int idx_number = 1; |
718e3744 | 2845 | int version; |
2846 | ||
80fa0c69 | 2847 | version = atoi (argv[idx_number]->arg); |
718e3744 | 2848 | if (version != RIPv1 && version != RIPv2) |
2849 | { | |
5c7571d4 | 2850 | vty_out (vty, "invalid rip version %d\n",version); |
f1a05de9 | 2851 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2852 | } |
f38a471c | 2853 | rip->version_send = version; |
2854 | rip->version_recv = version; | |
718e3744 | 2855 | |
2856 | return CMD_SUCCESS; | |
80fa0c69 | 2857 | } |
718e3744 | 2858 | |
2859 | DEFUN (no_rip_version, | |
2860 | no_rip_version_cmd, | |
55c727dd | 2861 | "no version [(1-2)]", |
718e3744 | 2862 | NO_STR |
55c727dd QY |
2863 | "Set routing protocol version\n" |
2864 | "Version\n") | |
718e3744 | 2865 | { |
2866 | /* Set RIP version to the default. */ | |
f38a471c | 2867 | rip->version_send = RI_RIP_VERSION_2; |
2868 | rip->version_recv = RI_RIP_VERSION_1_AND_2; | |
718e3744 | 2869 | |
2870 | return CMD_SUCCESS; | |
80fa0c69 | 2871 | } |
718e3744 | 2872 | |
718e3744 | 2873 | |
2874 | DEFUN (rip_route, | |
2875 | rip_route_cmd, | |
2876 | "route A.B.C.D/M", | |
2877 | "RIP static route configuration\n" | |
2878 | "IP prefix <network>/<length>\n") | |
2879 | { | |
80fa0c69 | 2880 | int idx_ipv4_prefixlen = 1; |
718e3744 | 2881 | int ret; |
2882 | struct prefix_ipv4 p; | |
2883 | struct route_node *node; | |
2884 | ||
80fa0c69 | 2885 | ret = str2prefix_ipv4 (argv[idx_ipv4_prefixlen]->arg, &p); |
718e3744 | 2886 | if (ret < 0) |
2887 | { | |
5c7571d4 | 2888 | vty_out (vty, "Malformed address\n"); |
f1a05de9 | 2889 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2890 | } |
2891 | apply_mask_ipv4 (&p); | |
2892 | ||
2893 | /* For router rip configuration. */ | |
2894 | node = route_node_get (rip->route, (struct prefix *) &p); | |
2895 | ||
2896 | if (node->info) | |
2897 | { | |
5c7571d4 | 2898 | vty_out (vty, "There is already same static route.\n"); |
718e3744 | 2899 | route_unlock_node (node); |
f1a05de9 | 2900 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2901 | } |
2902 | ||
e5f745ca | 2903 | node->info = (void *)1; |
718e3744 | 2904 | |
9471675f | 2905 | rip_redistribute_add (ZEBRA_ROUTE_RIP, RIP_ROUTE_STATIC, &p, 0, NULL, 0, 0, 0); |
718e3744 | 2906 | |
2907 | return CMD_SUCCESS; | |
2908 | } | |
2909 | ||
2910 | DEFUN (no_rip_route, | |
2911 | no_rip_route_cmd, | |
2912 | "no route A.B.C.D/M", | |
2913 | NO_STR | |
2914 | "RIP static route configuration\n" | |
2915 | "IP prefix <network>/<length>\n") | |
2916 | { | |
80fa0c69 | 2917 | int idx_ipv4_prefixlen = 2; |
718e3744 | 2918 | int ret; |
2919 | struct prefix_ipv4 p; | |
2920 | struct route_node *node; | |
2921 | ||
80fa0c69 | 2922 | ret = str2prefix_ipv4 (argv[idx_ipv4_prefixlen]->arg, &p); |
718e3744 | 2923 | if (ret < 0) |
2924 | { | |
5c7571d4 | 2925 | vty_out (vty, "Malformed address\n"); |
f1a05de9 | 2926 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2927 | } |
2928 | apply_mask_ipv4 (&p); | |
2929 | ||
2930 | /* For router rip configuration. */ | |
2931 | node = route_node_lookup (rip->route, (struct prefix *) &p); | |
2932 | if (! node) | |
2933 | { | |
5c7571d4 | 2934 | vty_out (vty, "Can't find route %s.\n",argv[idx_ipv4_prefixlen]->arg); |
f1a05de9 | 2935 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2936 | } |
2937 | ||
2938 | rip_redistribute_delete (ZEBRA_ROUTE_RIP, RIP_ROUTE_STATIC, &p, 0); | |
2939 | route_unlock_node (node); | |
2940 | ||
2941 | node->info = NULL; | |
2942 | route_unlock_node (node); | |
2943 | ||
2944 | return CMD_SUCCESS; | |
2945 | } | |
2946 | ||
2c239705 | 2947 | #if 0 |
dc63bfd4 | 2948 | static void |
216565ab | 2949 | rip_update_default_metric (void) |
718e3744 | 2950 | { |
2951 | struct route_node *np; | |
bce8e868 LF |
2952 | struct rip_info *rinfo = NULL; |
2953 | struct list *list = NULL; | |
2954 | struct listnode *listnode = NULL; | |
718e3744 | 2955 | |
2956 | for (np = route_top (rip->table); np; np = route_next (np)) | |
bce8e868 LF |
2957 | if ((list = np->info) != NULL) |
2958 | for (ALL_LIST_ELEMENTS_RO (list, listnode, rinfo)) | |
2959 | if (rinfo->type != ZEBRA_ROUTE_RIP && rinfo->type != ZEBRA_ROUTE_CONNECT) | |
2960 | rinfo->metric = rip->default_metric; | |
718e3744 | 2961 | } |
2c239705 | 2962 | #endif |
718e3744 | 2963 | |
2964 | DEFUN (rip_default_metric, | |
2965 | rip_default_metric_cmd, | |
6147e2c6 | 2966 | "default-metric (1-16)", |
718e3744 | 2967 | "Set a metric of redistribute routes\n" |
2968 | "Default metric\n") | |
2969 | { | |
80fa0c69 | 2970 | int idx_number = 1; |
718e3744 | 2971 | if (rip) |
2972 | { | |
80fa0c69 | 2973 | rip->default_metric = atoi (argv[idx_number]->arg); |
718e3744 | 2974 | /* rip_update_default_metric (); */ |
2975 | } | |
2976 | return CMD_SUCCESS; | |
2977 | } | |
2978 | ||
2979 | DEFUN (no_rip_default_metric, | |
2980 | no_rip_default_metric_cmd, | |
55c727dd | 2981 | "no default-metric [(1-16)]", |
718e3744 | 2982 | NO_STR |
2983 | "Set a metric of redistribute routes\n" | |
2984 | "Default metric\n") | |
2985 | { | |
2986 | if (rip) | |
2987 | { | |
2988 | rip->default_metric = RIP_DEFAULT_METRIC_DEFAULT; | |
2989 | /* rip_update_default_metric (); */ | |
2990 | } | |
2991 | return CMD_SUCCESS; | |
2992 | } | |
2993 | ||
718e3744 | 2994 | |
2995 | DEFUN (rip_timers, | |
2996 | rip_timers_cmd, | |
6147e2c6 | 2997 | "timers basic (5-2147483647) (5-2147483647) (5-2147483647)", |
718e3744 | 2998 | "Adjust routing timers\n" |
2999 | "Basic routing protocol update timers\n" | |
3000 | "Routing table update timer value in second. Default is 30.\n" | |
3001 | "Routing information timeout timer. Default is 180.\n" | |
3002 | "Garbage collection timer. Default is 120.\n") | |
3003 | { | |
80fa0c69 DW |
3004 | int idx_number = 2; |
3005 | int idx_number_2 = 3; | |
3006 | int idx_number_3 = 4; | |
718e3744 | 3007 | unsigned long update; |
3008 | unsigned long timeout; | |
3009 | unsigned long garbage; | |
3010 | char *endptr = NULL; | |
3011 | unsigned long RIP_TIMER_MAX = 2147483647; | |
3012 | unsigned long RIP_TIMER_MIN = 5; | |
3013 | ||
80fa0c69 | 3014 | update = strtoul (argv[idx_number]->arg, &endptr, 10); |
718e3744 | 3015 | if (update > RIP_TIMER_MAX || update < RIP_TIMER_MIN || *endptr != '\0') |
3016 | { | |
5c7571d4 | 3017 | vty_out (vty, "update timer value error\n"); |
f1a05de9 | 3018 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 3019 | } |
3020 | ||
80fa0c69 | 3021 | timeout = strtoul (argv[idx_number_2]->arg, &endptr, 10); |
718e3744 | 3022 | if (timeout > RIP_TIMER_MAX || timeout < RIP_TIMER_MIN || *endptr != '\0') |
3023 | { | |
5c7571d4 | 3024 | vty_out (vty, "timeout timer value error\n"); |
f1a05de9 | 3025 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 3026 | } |
3027 | ||
80fa0c69 | 3028 | garbage = strtoul (argv[idx_number_3]->arg, &endptr, 10); |
718e3744 | 3029 | if (garbage > RIP_TIMER_MAX || garbage < RIP_TIMER_MIN || *endptr != '\0') |
3030 | { | |
5c7571d4 | 3031 | vty_out (vty, "garbage timer value error\n"); |
f1a05de9 | 3032 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 3033 | } |
3034 | ||
3035 | /* Set each timer value. */ | |
3036 | rip->update_time = update; | |
3037 | rip->timeout_time = timeout; | |
3038 | rip->garbage_time = garbage; | |
3039 | ||
3040 | /* Reset update timer thread. */ | |
3041 | rip_event (RIP_UPDATE_EVENT, 0); | |
3042 | ||
3043 | return CMD_SUCCESS; | |
3044 | } | |
3045 | ||
3046 | DEFUN (no_rip_timers, | |
3047 | no_rip_timers_cmd, | |
55c727dd | 3048 | "no timers basic [(0-65535) (0-65535) (0-65535)]", |
718e3744 | 3049 | NO_STR |
3050 | "Adjust routing timers\n" | |
55c727dd QY |
3051 | "Basic routing protocol update timers\n" |
3052 | "Routing table update timer value in second. Default is 30.\n" | |
3053 | "Routing information timeout timer. Default is 180.\n" | |
3054 | "Garbage collection timer. Default is 120.\n") | |
718e3744 | 3055 | { |
3056 | /* Set each timer value to the default. */ | |
3057 | rip->update_time = RIP_UPDATE_TIMER_DEFAULT; | |
3058 | rip->timeout_time = RIP_TIMEOUT_TIMER_DEFAULT; | |
3059 | rip->garbage_time = RIP_GARBAGE_TIMER_DEFAULT; | |
3060 | ||
3061 | /* Reset update timer thread. */ | |
3062 | rip_event (RIP_UPDATE_EVENT, 0); | |
3063 | ||
3064 | return CMD_SUCCESS; | |
3065 | } | |
16705130 | 3066 | |
16705130 | 3067 | |
6b0655a2 | 3068 | |
718e3744 | 3069 | struct route_table *rip_distance_table; |
3070 | ||
3071 | struct rip_distance | |
3072 | { | |
3073 | /* Distance value for the IP source prefix. */ | |
3074 | u_char distance; | |
3075 | ||
3076 | /* Name of the access-list to be matched. */ | |
3077 | char *access_list; | |
3078 | }; | |
3079 | ||
dc63bfd4 | 3080 | static struct rip_distance * |
216565ab | 3081 | rip_distance_new (void) |
718e3744 | 3082 | { |
393deb9b | 3083 | return XCALLOC (MTYPE_RIP_DISTANCE, sizeof (struct rip_distance)); |
718e3744 | 3084 | } |
3085 | ||
dc63bfd4 | 3086 | static void |
718e3744 | 3087 | rip_distance_free (struct rip_distance *rdistance) |
3088 | { | |
3089 | XFREE (MTYPE_RIP_DISTANCE, rdistance); | |
3090 | } | |
3091 | ||
dc63bfd4 | 3092 | static int |
98b718a9 | 3093 | rip_distance_set (struct vty *vty, const char *distance_str, const char *ip_str, |
3094 | const char *access_list_str) | |
718e3744 | 3095 | { |
3096 | int ret; | |
3097 | struct prefix_ipv4 p; | |
3098 | u_char distance; | |
3099 | struct route_node *rn; | |
3100 | struct rip_distance *rdistance; | |
3101 | ||
3102 | ret = str2prefix_ipv4 (ip_str, &p); | |
3103 | if (ret == 0) | |
3104 | { | |
5c7571d4 | 3105 | vty_out (vty, "Malformed prefix\n"); |
f1a05de9 | 3106 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 3107 | } |
3108 | ||
3109 | distance = atoi (distance_str); | |
3110 | ||
3111 | /* Get RIP distance node. */ | |
3112 | rn = route_node_get (rip_distance_table, (struct prefix *) &p); | |
3113 | if (rn->info) | |
3114 | { | |
3115 | rdistance = rn->info; | |
3116 | route_unlock_node (rn); | |
3117 | } | |
3118 | else | |
3119 | { | |
3120 | rdistance = rip_distance_new (); | |
3121 | rn->info = rdistance; | |
3122 | } | |
3123 | ||
3124 | /* Set distance value. */ | |
3125 | rdistance->distance = distance; | |
3126 | ||
3127 | /* Reset access-list configuration. */ | |
3128 | if (rdistance->access_list) | |
3129 | { | |
3130 | free (rdistance->access_list); | |
3131 | rdistance->access_list = NULL; | |
3132 | } | |
3133 | if (access_list_str) | |
3134 | rdistance->access_list = strdup (access_list_str); | |
3135 | ||
3136 | return CMD_SUCCESS; | |
3137 | } | |
3138 | ||
dc63bfd4 | 3139 | static int |
98b718a9 | 3140 | rip_distance_unset (struct vty *vty, const char *distance_str, |
3141 | const char *ip_str, const char *access_list_str) | |
718e3744 | 3142 | { |
3143 | int ret; | |
3144 | struct prefix_ipv4 p; | |
718e3744 | 3145 | struct route_node *rn; |
3146 | struct rip_distance *rdistance; | |
3147 | ||
3148 | ret = str2prefix_ipv4 (ip_str, &p); | |
3149 | if (ret == 0) | |
3150 | { | |
5c7571d4 | 3151 | vty_out (vty, "Malformed prefix\n"); |
f1a05de9 | 3152 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 3153 | } |
3154 | ||
718e3744 | 3155 | rn = route_node_lookup (rip_distance_table, (struct prefix *)&p); |
3156 | if (! rn) | |
3157 | { | |
5c7571d4 | 3158 | vty_out (vty, "Can't find specified prefix\n"); |
f1a05de9 | 3159 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 3160 | } |
3161 | ||
3162 | rdistance = rn->info; | |
3163 | ||
3164 | if (rdistance->access_list) | |
3165 | free (rdistance->access_list); | |
3166 | rip_distance_free (rdistance); | |
3167 | ||
3168 | rn->info = NULL; | |
3169 | route_unlock_node (rn); | |
3170 | route_unlock_node (rn); | |
3171 | ||
3172 | return CMD_SUCCESS; | |
3173 | } | |
3174 | ||
dc63bfd4 | 3175 | static void |
216565ab | 3176 | rip_distance_reset (void) |
718e3744 | 3177 | { |
3178 | struct route_node *rn; | |
3179 | struct rip_distance *rdistance; | |
3180 | ||
3181 | for (rn = route_top (rip_distance_table); rn; rn = route_next (rn)) | |
3182 | if ((rdistance = rn->info) != NULL) | |
3183 | { | |
3184 | if (rdistance->access_list) | |
3185 | free (rdistance->access_list); | |
3186 | rip_distance_free (rdistance); | |
3187 | rn->info = NULL; | |
3188 | route_unlock_node (rn); | |
3189 | } | |
3190 | } | |
3191 | ||
3192 | /* Apply RIP information to distance method. */ | |
3193 | u_char | |
3194 | rip_distance_apply (struct rip_info *rinfo) | |
3195 | { | |
3196 | struct route_node *rn; | |
3197 | struct prefix_ipv4 p; | |
3198 | struct rip_distance *rdistance; | |
3199 | struct access_list *alist; | |
3200 | ||
3201 | if (! rip) | |
3202 | return 0; | |
3203 | ||
3204 | memset (&p, 0, sizeof (struct prefix_ipv4)); | |
3205 | p.family = AF_INET; | |
3206 | p.prefix = rinfo->from; | |
3207 | p.prefixlen = IPV4_MAX_BITLEN; | |
3208 | ||
3209 | /* Check source address. */ | |
3210 | rn = route_node_match (rip_distance_table, (struct prefix *) &p); | |
3211 | if (rn) | |
3212 | { | |
3213 | rdistance = rn->info; | |
3214 | route_unlock_node (rn); | |
3215 | ||
3216 | if (rdistance->access_list) | |
3217 | { | |
3218 | alist = access_list_lookup (AFI_IP, rdistance->access_list); | |
3219 | if (alist == NULL) | |
3220 | return 0; | |
3221 | if (access_list_apply (alist, &rinfo->rp->p) == FILTER_DENY) | |
3222 | return 0; | |
3223 | ||
3224 | return rdistance->distance; | |
3225 | } | |
3226 | else | |
3227 | return rdistance->distance; | |
3228 | } | |
3229 | ||
3230 | if (rip->distance) | |
3231 | return rip->distance; | |
3232 | ||
3233 | return 0; | |
3234 | } | |
3235 | ||
dc63bfd4 | 3236 | static void |
718e3744 | 3237 | rip_distance_show (struct vty *vty) |
3238 | { | |
3239 | struct route_node *rn; | |
3240 | struct rip_distance *rdistance; | |
3241 | int header = 1; | |
3242 | char buf[BUFSIZ]; | |
3243 | ||
5c7571d4 | 3244 | vty_out (vty, " Distance: (default is %d)\n", |
96ade3ed | 3245 | rip->distance ? rip->distance : ZEBRA_RIP_DISTANCE_DEFAULT); |
718e3744 | 3246 | |
3247 | for (rn = route_top (rip_distance_table); rn; rn = route_next (rn)) | |
3248 | if ((rdistance = rn->info) != NULL) | |
3249 | { | |
3250 | if (header) | |
3251 | { | |
5c7571d4 | 3252 | vty_out (vty," Address Distance List\n"); |
718e3744 | 3253 | header = 0; |
3254 | } | |
3255 | sprintf (buf, "%s/%d", inet_ntoa (rn->p.u.prefix4), rn->p.prefixlen); | |
5c7571d4 | 3256 | vty_out (vty, " %-20s %4d %s\n", |
718e3744 | 3257 | buf, rdistance->distance, |
96ade3ed | 3258 | rdistance->access_list ? rdistance->access_list : ""); |
718e3744 | 3259 | } |
3260 | } | |
3261 | ||
3262 | DEFUN (rip_distance, | |
3263 | rip_distance_cmd, | |
6147e2c6 | 3264 | "distance (1-255)", |
718e3744 | 3265 | "Administrative distance\n" |
3266 | "Distance value\n") | |
3267 | { | |
80fa0c69 DW |
3268 | int idx_number = 1; |
3269 | rip->distance = atoi (argv[idx_number]->arg); | |
718e3744 | 3270 | return CMD_SUCCESS; |
3271 | } | |
3272 | ||
3273 | DEFUN (no_rip_distance, | |
3274 | no_rip_distance_cmd, | |
6147e2c6 | 3275 | "no distance (1-255)", |
718e3744 | 3276 | NO_STR |
3277 | "Administrative distance\n" | |
3278 | "Distance value\n") | |
3279 | { | |
3280 | rip->distance = 0; | |
3281 | return CMD_SUCCESS; | |
3282 | } | |
3283 | ||
3284 | DEFUN (rip_distance_source, | |
3285 | rip_distance_source_cmd, | |
6147e2c6 | 3286 | "distance (1-255) A.B.C.D/M", |
718e3744 | 3287 | "Administrative distance\n" |
3288 | "Distance value\n" | |
3289 | "IP source prefix\n") | |
3290 | { | |
80fa0c69 DW |
3291 | int idx_number = 1; |
3292 | int idx_ipv4_prefixlen = 2; | |
3293 | rip_distance_set (vty, argv[idx_number]->arg, argv[idx_ipv4_prefixlen]->arg, NULL); | |
718e3744 | 3294 | return CMD_SUCCESS; |
3295 | } | |
3296 | ||
3297 | DEFUN (no_rip_distance_source, | |
3298 | no_rip_distance_source_cmd, | |
6147e2c6 | 3299 | "no distance (1-255) A.B.C.D/M", |
718e3744 | 3300 | NO_STR |
3301 | "Administrative distance\n" | |
3302 | "Distance value\n" | |
3303 | "IP source prefix\n") | |
3304 | { | |
80fa0c69 DW |
3305 | int idx_number = 2; |
3306 | int idx_ipv4_prefixlen = 3; | |
3307 | rip_distance_unset (vty, argv[idx_number]->arg, argv[idx_ipv4_prefixlen]->arg, NULL); | |
718e3744 | 3308 | return CMD_SUCCESS; |
3309 | } | |
3310 | ||
3311 | DEFUN (rip_distance_source_access_list, | |
3312 | rip_distance_source_access_list_cmd, | |
6147e2c6 | 3313 | "distance (1-255) A.B.C.D/M WORD", |
718e3744 | 3314 | "Administrative distance\n" |
3315 | "Distance value\n" | |
3316 | "IP source prefix\n" | |
3317 | "Access list name\n") | |
3318 | { | |
80fa0c69 DW |
3319 | int idx_number = 1; |
3320 | int idx_ipv4_prefixlen = 2; | |
3321 | int idx_word = 3; | |
3322 | rip_distance_set (vty, argv[idx_number]->arg, argv[idx_ipv4_prefixlen]->arg, argv[idx_word]->arg); | |
718e3744 | 3323 | return CMD_SUCCESS; |
3324 | } | |
3325 | ||
3326 | DEFUN (no_rip_distance_source_access_list, | |
3327 | no_rip_distance_source_access_list_cmd, | |
6147e2c6 | 3328 | "no distance (1-255) A.B.C.D/M WORD", |
718e3744 | 3329 | NO_STR |
3330 | "Administrative distance\n" | |
3331 | "Distance value\n" | |
3332 | "IP source prefix\n" | |
3333 | "Access list name\n") | |
3334 | { | |
80fa0c69 DW |
3335 | int idx_number = 2; |
3336 | int idx_ipv4_prefixlen = 3; | |
3337 | int idx_word = 4; | |
3338 | rip_distance_unset (vty, argv[idx_number]->arg, argv[idx_ipv4_prefixlen]->arg, argv[idx_word]->arg); | |
718e3744 | 3339 | return CMD_SUCCESS; |
3340 | } | |
6b0655a2 | 3341 | |
8478ae7e LF |
3342 | /* Update ECMP routes to zebra when ECMP is disabled. */ |
3343 | static void | |
3344 | rip_ecmp_disable (void) | |
3345 | { | |
3346 | struct route_node *rp; | |
3347 | struct rip_info *rinfo, *tmp_rinfo; | |
3348 | struct list *list; | |
3349 | struct listnode *node, *nextnode; | |
3350 | ||
3351 | if (!rip) | |
3352 | return; | |
3353 | ||
3354 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) | |
3355 | if ((list = rp->info) != NULL && listcount (list) > 1) | |
3356 | { | |
3357 | rinfo = listgetdata (listhead (list)); | |
3358 | if (!rip_route_rte (rinfo)) | |
3359 | continue; | |
3360 | ||
3361 | /* Drop all other entries, except the first one. */ | |
3362 | for (ALL_LIST_ELEMENTS (list, node, nextnode, tmp_rinfo)) | |
3363 | if (tmp_rinfo != rinfo) | |
3364 | { | |
3365 | RIP_TIMER_OFF (tmp_rinfo->t_timeout); | |
3366 | RIP_TIMER_OFF (tmp_rinfo->t_garbage_collect); | |
3367 | list_delete_node (list, node); | |
3368 | rip_info_free (tmp_rinfo); | |
3369 | } | |
3370 | ||
3371 | /* Update zebra. */ | |
3372 | rip_zebra_ipv4_add (rp); | |
3373 | ||
3374 | /* Set the route change flag. */ | |
3375 | SET_FLAG (rinfo->flags, RIP_RTF_CHANGED); | |
3376 | ||
3377 | /* Signal the output process to trigger an update. */ | |
3378 | rip_event (RIP_TRIGGERED_UPDATE, 0); | |
3379 | } | |
3380 | } | |
3381 | ||
3382 | DEFUN (rip_allow_ecmp, | |
3383 | rip_allow_ecmp_cmd, | |
3384 | "allow-ecmp", | |
3385 | "Allow Equal Cost MultiPath\n") | |
3386 | { | |
3387 | if (rip->ecmp) | |
3388 | { | |
5c7571d4 | 3389 | vty_out (vty, "ECMP is already enabled.\n"); |
f1a05de9 | 3390 | return CMD_WARNING_CONFIG_FAILED; |
8478ae7e LF |
3391 | } |
3392 | ||
3393 | rip->ecmp = 1; | |
3394 | zlog_info ("ECMP is enabled."); | |
3395 | return CMD_SUCCESS; | |
3396 | } | |
3397 | ||
3398 | DEFUN (no_rip_allow_ecmp, | |
3399 | no_rip_allow_ecmp_cmd, | |
3400 | "no allow-ecmp", | |
3401 | NO_STR | |
3402 | "Allow Equal Cost MultiPath\n") | |
3403 | { | |
3404 | if (!rip->ecmp) | |
3405 | { | |
5c7571d4 | 3406 | vty_out (vty, "ECMP is already disabled.\n"); |
f1a05de9 | 3407 | return CMD_WARNING_CONFIG_FAILED; |
8478ae7e LF |
3408 | } |
3409 | ||
3410 | rip->ecmp = 0; | |
3411 | zlog_info ("ECMP is disabled."); | |
3412 | rip_ecmp_disable (); | |
3413 | return CMD_SUCCESS; | |
3414 | } | |
3415 | ||
718e3744 | 3416 | /* Print out routes update time. */ |
dc63bfd4 | 3417 | static void |
718e3744 | 3418 | rip_vty_out_uptime (struct vty *vty, struct rip_info *rinfo) |
3419 | { | |
718e3744 | 3420 | time_t clock; |
3421 | struct tm *tm; | |
3422 | #define TIME_BUF 25 | |
3423 | char timebuf [TIME_BUF]; | |
3424 | struct thread *thread; | |
3425 | ||
718e3744 | 3426 | if ((thread = rinfo->t_timeout) != NULL) |
3427 | { | |
a1fdf947 | 3428 | clock = thread_timer_remain_second (thread); |
718e3744 | 3429 | tm = gmtime (&clock); |
3430 | strftime (timebuf, TIME_BUF, "%M:%S", tm); | |
3431 | vty_out (vty, "%5s", timebuf); | |
3432 | } | |
3433 | else if ((thread = rinfo->t_garbage_collect) != 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 | } | |
3441 | ||
dc63bfd4 | 3442 | static const char * |
718e3744 | 3443 | rip_route_type_print (int sub_type) |
3444 | { | |
3445 | switch (sub_type) | |
3446 | { | |
3447 | case RIP_ROUTE_RTE: | |
3448 | return "n"; | |
3449 | case RIP_ROUTE_STATIC: | |
3450 | return "s"; | |
3451 | case RIP_ROUTE_DEFAULT: | |
3452 | return "d"; | |
3453 | case RIP_ROUTE_REDISTRIBUTE: | |
3454 | return "r"; | |
3455 | case RIP_ROUTE_INTERFACE: | |
3456 | return "i"; | |
3457 | default: | |
3458 | return "?"; | |
3459 | } | |
3460 | } | |
3461 | ||
3462 | DEFUN (show_ip_rip, | |
3463 | show_ip_rip_cmd, | |
3464 | "show ip rip", | |
3465 | SHOW_STR | |
3466 | IP_STR | |
3467 | "Show RIP routes\n") | |
3468 | { | |
3469 | struct route_node *np; | |
bce8e868 LF |
3470 | struct rip_info *rinfo = NULL; |
3471 | struct list *list = NULL; | |
3472 | struct listnode *listnode = NULL; | |
718e3744 | 3473 | |
3474 | if (! rip) | |
3475 | return CMD_SUCCESS; | |
3476 | ||
625e016d DL |
3477 | vty_out (vty, "Codes: R - RIP, C - connected, S - Static, O - OSPF, B - BGP\n" |
3478 | "Sub-codes:\n" | |
3479 | " (n) - normal, (s) - static, (d) - default, (r) - redistribute,\n" | |
3480 | " (i) - interface\n\n" | |
3481 | " Network Next Hop Metric From Tag Time\n"); | |
718e3744 | 3482 | |
3483 | for (np = route_top (rip->table); np; np = route_next (np)) | |
bce8e868 LF |
3484 | if ((list = np->info) != NULL) |
3485 | for (ALL_LIST_ELEMENTS_RO (list, listnode, rinfo)) | |
718e3744 | 3486 | { |
3487 | int len; | |
3488 | ||
f52d13cb | 3489 | len = vty_out (vty, "%c(%s) %s/%d", |
718e3744 | 3490 | /* np->lock, For debugging. */ |
f52d13cb | 3491 | zebra_route_char(rinfo->type), |
718e3744 | 3492 | rip_route_type_print (rinfo->sub_type), |
3493 | inet_ntoa (np->p.u.prefix4), np->p.prefixlen); | |
3494 | ||
a1455d86 | 3495 | len = 24 - len; |
718e3744 | 3496 | |
3497 | if (len > 0) | |
3498 | vty_out (vty, "%*s", len, " "); | |
3499 | ||
3500 | if (rinfo->nexthop.s_addr) | |
3501 | vty_out (vty, "%-20s %2d ", inet_ntoa (rinfo->nexthop), | |
3502 | rinfo->metric); | |
3503 | else | |
3504 | vty_out (vty, "0.0.0.0 %2d ", rinfo->metric); | |
3505 | ||
3506 | /* Route which exist in kernel routing table. */ | |
3507 | if ((rinfo->type == ZEBRA_ROUTE_RIP) && | |
3508 | (rinfo->sub_type == RIP_ROUTE_RTE)) | |
3509 | { | |
3510 | vty_out (vty, "%-15s ", inet_ntoa (rinfo->from)); | |
dc9ffce8 | 3511 | vty_out (vty, "%3"ROUTE_TAG_PRI" ", (route_tag_t)rinfo->tag); |
718e3744 | 3512 | rip_vty_out_uptime (vty, rinfo); |
3513 | } | |
3514 | else if (rinfo->metric == RIP_METRIC_INFINITY) | |
3515 | { | |
3516 | vty_out (vty, "self "); | |
dc9ffce8 | 3517 | vty_out (vty, "%3"ROUTE_TAG_PRI" ", (route_tag_t)rinfo->tag); |
718e3744 | 3518 | rip_vty_out_uptime (vty, rinfo); |
3519 | } | |
3520 | else | |
16705130 | 3521 | { |
fbf5d033 | 3522 | if (rinfo->external_metric) |
3523 | { | |
3524 | len = vty_out (vty, "self (%s:%d)", | |
f52d13cb | 3525 | zebra_route_string(rinfo->type), |
fbf5d033 | 3526 | rinfo->external_metric); |
3527 | len = 16 - len; | |
3528 | if (len > 0) | |
3529 | vty_out (vty, "%*s", len, " "); | |
3530 | } | |
3531 | else | |
3532 | vty_out (vty, "self "); | |
dc9ffce8 | 3533 | vty_out (vty, "%3"ROUTE_TAG_PRI, (route_tag_t)rinfo->tag); |
16705130 | 3534 | } |
718e3744 | 3535 | |
6d3c2ed4 | 3536 | vty_out (vty, "\n"); |
718e3744 | 3537 | } |
3538 | return CMD_SUCCESS; | |
3539 | } | |
3540 | ||
16705130 | 3541 | /* Vincent: formerly, it was show_ip_protocols_rip: "show ip protocols" */ |
3542 | DEFUN (show_ip_rip_status, | |
3543 | show_ip_rip_status_cmd, | |
3544 | "show ip rip status", | |
718e3744 | 3545 | SHOW_STR |
3546 | IP_STR | |
16705130 | 3547 | "Show RIP routes\n" |
718e3744 | 3548 | "IP routing protocol process parameters and statistics\n") |
3549 | { | |
52dc7ee6 | 3550 | struct listnode *node; |
718e3744 | 3551 | struct interface *ifp; |
3552 | struct rip_interface *ri; | |
1423c809 | 3553 | extern const struct message ri_version_msg[]; |
8a676be3 | 3554 | const char *send_version; |
3555 | const char *receive_version; | |
718e3744 | 3556 | |
3557 | if (! rip) | |
3558 | return CMD_SUCCESS; | |
3559 | ||
181039f3 | 3560 | vty_out (vty, "Routing Protocol is \"rip\"\n"); |
718e3744 | 3561 | vty_out (vty, " Sending updates every %ld seconds with +/-50%%,", |
3562 | rip->update_time); | |
5c7571d4 | 3563 | vty_out (vty, " next due in %lu seconds\n", |
96ade3ed | 3564 | thread_timer_remain_second(rip->t_update)); |
718e3744 | 3565 | vty_out (vty, " Timeout after %ld seconds,", rip->timeout_time); |
5c7571d4 | 3566 | vty_out (vty, " garbage collect after %ld seconds\n",rip->garbage_time); |
718e3744 | 3567 | |
3568 | /* Filtering status show. */ | |
3569 | config_show_distribute (vty); | |
3570 | ||
3571 | /* Default metric information. */ | |
5c7571d4 | 3572 | vty_out (vty, " Default redistribution metric is %d\n", |
96ade3ed | 3573 | rip->default_metric); |
718e3744 | 3574 | |
3575 | /* Redistribute information. */ | |
3576 | vty_out (vty, " Redistributing:"); | |
3577 | config_write_rip_redistribute (vty, 0); | |
6d3c2ed4 | 3578 | vty_out (vty, "\n"); |
718e3744 | 3579 | |
f38a471c | 3580 | vty_out (vty, " Default version control: send version %s,", |
56b40679 | 3581 | lookup_msg(ri_version_msg,rip->version_send, NULL)); |
f38a471c | 3582 | if (rip->version_recv == RI_RIP_VERSION_1_AND_2) |
5c7571d4 | 3583 | vty_out (vty, " receive any version \n"); |
f38a471c | 3584 | else |
5c7571d4 | 3585 | vty_out (vty, " receive version %s \n", |
96ade3ed | 3586 | lookup_msg(ri_version_msg,rip->version_recv, NULL)); |
718e3744 | 3587 | |
5c7571d4 | 3588 | vty_out (vty, " Interface Send Recv Key-chain\n"); |
718e3744 | 3589 | |
b2d7c082 | 3590 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), node, ifp)) |
718e3744 | 3591 | { |
718e3744 | 3592 | ri = ifp->info; |
3593 | ||
82f5ee1e SH |
3594 | if (!ri->running) |
3595 | continue; | |
3596 | ||
718e3744 | 3597 | if (ri->enable_network || ri->enable_interface) |
3598 | { | |
3599 | if (ri->ri_send == RI_RIP_UNSPEC) | |
56b40679 | 3600 | send_version = lookup_msg(ri_version_msg, rip->version_send, NULL); |
718e3744 | 3601 | else |
56b40679 | 3602 | send_version = lookup_msg(ri_version_msg, ri->ri_send, NULL); |
718e3744 | 3603 | |
3604 | if (ri->ri_receive == RI_RIP_UNSPEC) | |
56b40679 | 3605 | receive_version = lookup_msg(ri_version_msg, rip->version_recv, NULL); |
718e3744 | 3606 | else |
56b40679 | 3607 | receive_version = lookup_msg(ri_version_msg, ri->ri_receive, NULL); |
718e3744 | 3608 | |
5c7571d4 | 3609 | vty_out (vty, " %-17s%-3s %-3s %s\n", ifp->name, |
718e3744 | 3610 | send_version, |
3611 | receive_version, | |
96ade3ed | 3612 | ri->key_chain ? ri->key_chain : ""); |
718e3744 | 3613 | } |
3614 | } | |
3615 | ||
5c7571d4 | 3616 | vty_out (vty, " Routing for Networks:\n"); |
718e3744 | 3617 | config_write_rip_network (vty, 0); |
3618 | ||
4aaff3f8 | 3619 | { |
3620 | int found_passive = 0; | |
b2d7c082 | 3621 | for (ALL_LIST_ELEMENTS_RO (vrf_iflist (VRF_DEFAULT), node, ifp)) |
4aaff3f8 | 3622 | { |
4aaff3f8 | 3623 | ri = ifp->info; |
3624 | ||
3625 | if ((ri->enable_network || ri->enable_interface) && ri->passive) | |
3626 | { | |
3627 | if (!found_passive) | |
3628 | { | |
5c7571d4 | 3629 | vty_out (vty, " Passive Interface(s):\n"); |
4aaff3f8 | 3630 | found_passive = 1; |
3631 | } | |
5c7571d4 | 3632 | vty_out (vty, " %s\n", ifp->name); |
4aaff3f8 | 3633 | } |
3634 | } | |
3635 | } | |
3636 | ||
5c7571d4 DL |
3637 | vty_out (vty, " Routing Information Sources:\n"); |
3638 | vty_out (vty, | |
3639 | " Gateway BadPackets BadRoutes Distance Last Update\n"); | |
718e3744 | 3640 | rip_peer_display (vty); |
3641 | ||
3642 | rip_distance_show (vty); | |
3643 | ||
3644 | return CMD_SUCCESS; | |
3645 | } | |
3646 | ||
3647 | /* RIP configuration write function. */ | |
dc63bfd4 | 3648 | static int |
718e3744 | 3649 | config_write_rip (struct vty *vty) |
3650 | { | |
3651 | int write = 0; | |
3652 | struct route_node *rn; | |
3653 | struct rip_distance *rdistance; | |
3654 | ||
3655 | if (rip) | |
3656 | { | |
3657 | /* Router RIP statement. */ | |
5c7571d4 | 3658 | vty_out (vty, "router rip\n"); |
718e3744 | 3659 | write++; |
3660 | ||
3661 | /* RIP version statement. Default is RIP version 2. */ | |
f38a471c | 3662 | if (rip->version_send != RI_RIP_VERSION_2 |
3663 | || rip->version_recv != RI_RIP_VERSION_1_AND_2) | |
5c7571d4 | 3664 | vty_out (vty, " version %d\n",rip->version_send); |
718e3744 | 3665 | |
3666 | /* RIP timer configuration. */ | |
3667 | if (rip->update_time != RIP_UPDATE_TIMER_DEFAULT | |
3668 | || rip->timeout_time != RIP_TIMEOUT_TIMER_DEFAULT | |
3669 | || rip->garbage_time != RIP_GARBAGE_TIMER_DEFAULT) | |
5c7571d4 | 3670 | vty_out (vty, " timers basic %lu %lu %lu\n", |
718e3744 | 3671 | rip->update_time, |
3672 | rip->timeout_time, | |
96ade3ed | 3673 | rip->garbage_time); |
718e3744 | 3674 | |
3675 | /* Default information configuration. */ | |
3676 | if (rip->default_information) | |
3677 | { | |
3678 | if (rip->default_information_route_map) | |
5c7571d4 | 3679 | vty_out (vty, " default-information originate route-map %s\n", |
96ade3ed | 3680 | rip->default_information_route_map); |
718e3744 | 3681 | else |
5c7571d4 | 3682 | vty_out (vty," default-information originate\n"); |
718e3744 | 3683 | } |
3684 | ||
3685 | /* Redistribute configuration. */ | |
3686 | config_write_rip_redistribute (vty, 1); | |
3687 | ||
3688 | /* RIP offset-list configuration. */ | |
3689 | config_write_rip_offset_list (vty); | |
3690 | ||
3691 | /* RIP enabled network and interface configuration. */ | |
3692 | config_write_rip_network (vty, 1); | |
3693 | ||
3694 | /* RIP default metric configuration */ | |
3695 | if (rip->default_metric != RIP_DEFAULT_METRIC_DEFAULT) | |
5c7571d4 | 3696 | vty_out (vty, " default-metric %d\n", |
96ade3ed | 3697 | rip->default_metric); |
718e3744 | 3698 | |
3699 | /* Distribute configuration. */ | |
3700 | write += config_write_distribute (vty); | |
3701 | ||
16705130 | 3702 | /* Interface routemap configuration */ |
3703 | write += config_write_if_rmap (vty); | |
3704 | ||
718e3744 | 3705 | /* Distance configuration. */ |
3706 | if (rip->distance) | |
5c7571d4 | 3707 | vty_out (vty, " distance %d\n", rip->distance); |
718e3744 | 3708 | |
3709 | /* RIP source IP prefix distance configuration. */ | |
3710 | for (rn = route_top (rip_distance_table); rn; rn = route_next (rn)) | |
3711 | if ((rdistance = rn->info) != NULL) | |
5c7571d4 | 3712 | vty_out (vty, " distance %d %s/%d %s\n", rdistance->distance, |
718e3744 | 3713 | inet_ntoa (rn->p.u.prefix4), rn->p.prefixlen, |
96ade3ed | 3714 | rdistance->access_list ? rdistance->access_list : ""); |
718e3744 | 3715 | |
8478ae7e LF |
3716 | /* ECMP configuration. */ |
3717 | if (rip->ecmp) | |
5c7571d4 | 3718 | vty_out (vty, " allow-ecmp\n"); |
8478ae7e | 3719 | |
718e3744 | 3720 | /* RIP static route configuration. */ |
3721 | for (rn = route_top (rip->route); rn; rn = route_next (rn)) | |
3722 | if (rn->info) | |
5c7571d4 | 3723 | vty_out (vty, " route %s/%d\n", |
718e3744 | 3724 | inet_ntoa (rn->p.u.prefix4), |
96ade3ed | 3725 | rn->p.prefixlen); |
718e3744 | 3726 | |
3727 | } | |
3728 | return write; | |
3729 | } | |
3730 | ||
3731 | /* RIP node structure. */ | |
7fc626de | 3732 | static struct cmd_node rip_node = |
718e3744 | 3733 | { |
3734 | RIP_NODE, | |
3735 | "%s(config-router)# ", | |
3736 | 1 | |
3737 | }; | |
6b0655a2 | 3738 | |
718e3744 | 3739 | /* Distribute-list update functions. */ |
dc63bfd4 | 3740 | static void |
718e3744 | 3741 | rip_distribute_update (struct distribute *dist) |
3742 | { | |
3743 | struct interface *ifp; | |
3744 | struct rip_interface *ri; | |
3745 | struct access_list *alist; | |
3746 | struct prefix_list *plist; | |
3747 | ||
3748 | if (! dist->ifname) | |
3749 | return; | |
3750 | ||
1306c09a | 3751 | ifp = if_lookup_by_name (dist->ifname, VRF_DEFAULT); |
718e3744 | 3752 | if (ifp == NULL) |
3753 | return; | |
3754 | ||
3755 | ri = ifp->info; | |
3756 | ||
fb23cf4a | 3757 | if (dist->list[DISTRIBUTE_V4_IN]) |
718e3744 | 3758 | { |
fb23cf4a | 3759 | alist = access_list_lookup (AFI_IP, dist->list[DISTRIBUTE_V4_IN]); |
718e3744 | 3760 | if (alist) |
3761 | ri->list[RIP_FILTER_IN] = alist; | |
3762 | else | |
3763 | ri->list[RIP_FILTER_IN] = NULL; | |
3764 | } | |
3765 | else | |
3766 | ri->list[RIP_FILTER_IN] = NULL; | |
3767 | ||
fb23cf4a | 3768 | if (dist->list[DISTRIBUTE_V4_OUT]) |
718e3744 | 3769 | { |
fb23cf4a | 3770 | alist = access_list_lookup (AFI_IP, dist->list[DISTRIBUTE_V4_OUT]); |
718e3744 | 3771 | if (alist) |
3772 | ri->list[RIP_FILTER_OUT] = alist; | |
3773 | else | |
3774 | ri->list[RIP_FILTER_OUT] = NULL; | |
3775 | } | |
3776 | else | |
3777 | ri->list[RIP_FILTER_OUT] = NULL; | |
3778 | ||
fb23cf4a | 3779 | if (dist->prefix[DISTRIBUTE_V4_IN]) |
718e3744 | 3780 | { |
fb23cf4a | 3781 | plist = prefix_list_lookup (AFI_IP, dist->prefix[DISTRIBUTE_V4_IN]); |
718e3744 | 3782 | if (plist) |
3783 | ri->prefix[RIP_FILTER_IN] = plist; | |
3784 | else | |
3785 | ri->prefix[RIP_FILTER_IN] = NULL; | |
3786 | } | |
3787 | else | |
3788 | ri->prefix[RIP_FILTER_IN] = NULL; | |
3789 | ||
fb23cf4a | 3790 | if (dist->prefix[DISTRIBUTE_V4_OUT]) |
718e3744 | 3791 | { |
fb23cf4a | 3792 | plist = prefix_list_lookup (AFI_IP, dist->prefix[DISTRIBUTE_V4_OUT]); |
718e3744 | 3793 | if (plist) |
3794 | ri->prefix[RIP_FILTER_OUT] = plist; | |
3795 | else | |
3796 | ri->prefix[RIP_FILTER_OUT] = NULL; | |
3797 | } | |
3798 | else | |
3799 | ri->prefix[RIP_FILTER_OUT] = NULL; | |
3800 | } | |
3801 | ||
3802 | void | |
3803 | rip_distribute_update_interface (struct interface *ifp) | |
3804 | { | |
3805 | struct distribute *dist; | |
3806 | ||
3807 | dist = distribute_lookup (ifp->name); | |
3808 | if (dist) | |
3809 | rip_distribute_update (dist); | |
3810 | } | |
3811 | ||
3812 | /* Update all interface's distribute list. */ | |
02ff83c5 | 3813 | /* ARGSUSED */ |
dc63bfd4 | 3814 | static void |
02ff83c5 | 3815 | rip_distribute_update_all (struct prefix_list *notused) |
718e3744 | 3816 | { |
3817 | struct interface *ifp; | |
1eb8ef25 | 3818 | struct listnode *node, *nnode; |
718e3744 | 3819 | |
b2d7c082 | 3820 | for (ALL_LIST_ELEMENTS (vrf_iflist (VRF_DEFAULT), node, nnode, ifp)) |
1eb8ef25 | 3821 | rip_distribute_update_interface (ifp); |
718e3744 | 3822 | } |
11dde9c2 | 3823 | /* ARGSUSED */ |
dc63bfd4 | 3824 | static void |
11dde9c2 | 3825 | rip_distribute_update_all_wrapper(struct access_list *notused) |
3826 | { | |
02ff83c5 | 3827 | rip_distribute_update_all(NULL); |
11dde9c2 | 3828 | } |
6b0655a2 | 3829 | |
718e3744 | 3830 | /* Delete all added rip route. */ |
3831 | void | |
216565ab | 3832 | rip_clean (void) |
718e3744 | 3833 | { |
3834 | int i; | |
3835 | struct route_node *rp; | |
bce8e868 LF |
3836 | struct rip_info *rinfo = NULL; |
3837 | struct list *list = NULL; | |
3838 | struct listnode *listnode = NULL; | |
718e3744 | 3839 | |
3840 | if (rip) | |
3841 | { | |
f6eacff4 DL |
3842 | QOBJ_UNREG (rip); |
3843 | ||
718e3744 | 3844 | /* Clear RIP routes */ |
3845 | for (rp = route_top (rip->table); rp; rp = route_next (rp)) | |
bce8e868 LF |
3846 | if ((list = rp->info) != NULL) |
3847 | { | |
3848 | rinfo = listgetdata (listhead (list)); | |
3849 | if (rip_route_rte (rinfo)) | |
3850 | rip_zebra_ipv4_delete (rp); | |
3851 | ||
3852 | for (ALL_LIST_ELEMENTS_RO (list, listnode, rinfo)) | |
3853 | { | |
3854 | RIP_TIMER_OFF (rinfo->t_timeout); | |
3855 | RIP_TIMER_OFF (rinfo->t_garbage_collect); | |
3856 | rip_info_free (rinfo); | |
3857 | } | |
3858 | list_delete (list); | |
3859 | rp->info = NULL; | |
3860 | route_unlock_node (rp); | |
3861 | } | |
718e3744 | 3862 | |
3863 | /* Cancel RIP related timers. */ | |
3864 | RIP_TIMER_OFF (rip->t_update); | |
3865 | RIP_TIMER_OFF (rip->t_triggered_update); | |
3866 | RIP_TIMER_OFF (rip->t_triggered_interval); | |
3867 | ||
3868 | /* Cancel read thread. */ | |
8578874d | 3869 | THREAD_READ_OFF (rip->t_read); |
718e3744 | 3870 | |
3871 | /* Close RIP socket. */ | |
3872 | if (rip->sock >= 0) | |
3873 | { | |
3874 | close (rip->sock); | |
3875 | rip->sock = -1; | |
3876 | } | |
3877 | ||
3878 | /* Static RIP route configuration. */ | |
3879 | for (rp = route_top (rip->route); rp; rp = route_next (rp)) | |
3880 | if (rp->info) | |
3881 | { | |
3882 | rp->info = NULL; | |
3883 | route_unlock_node (rp); | |
3884 | } | |
3885 | ||
3886 | /* RIP neighbor configuration. */ | |
3887 | for (rp = route_top (rip->neighbor); rp; rp = route_next (rp)) | |
3888 | if (rp->info) | |
3889 | { | |
3890 | rp->info = NULL; | |
3891 | route_unlock_node (rp); | |
3892 | } | |
3893 | ||
3894 | /* Redistribute related clear. */ | |
3895 | if (rip->default_information_route_map) | |
3896 | free (rip->default_information_route_map); | |
3897 | ||
3898 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
3899 | if (rip->route_map[i].name) | |
3900 | free (rip->route_map[i].name); | |
3901 | ||
3902 | XFREE (MTYPE_ROUTE_TABLE, rip->table); | |
3903 | XFREE (MTYPE_ROUTE_TABLE, rip->route); | |
3904 | XFREE (MTYPE_ROUTE_TABLE, rip->neighbor); | |
3905 | ||
3906 | XFREE (MTYPE_RIP, rip); | |
3907 | rip = NULL; | |
3908 | } | |
3909 | ||
3910 | rip_clean_network (); | |
4aaff3f8 | 3911 | rip_passive_nondefault_clean (); |
718e3744 | 3912 | rip_offset_clean (); |
1dec2166 | 3913 | rip_interfaces_clean (); |
718e3744 | 3914 | rip_distance_reset (); |
3915 | rip_redistribute_clean (); | |
3916 | } | |
3917 | ||
3918 | /* Reset all values to the default settings. */ | |
3919 | void | |
216565ab | 3920 | rip_reset (void) |
718e3744 | 3921 | { |
3922 | /* Reset global counters. */ | |
3923 | rip_global_route_changes = 0; | |
3924 | rip_global_queries = 0; | |
3925 | ||
3926 | /* Call ripd related reset functions. */ | |
3927 | rip_debug_reset (); | |
3928 | rip_route_map_reset (); | |
3929 | ||
3930 | /* Call library reset functions. */ | |
3931 | vty_reset (); | |
3932 | access_list_reset (); | |
3933 | prefix_list_reset (); | |
3934 | ||
3935 | distribute_list_reset (); | |
3936 | ||
1dec2166 | 3937 | rip_interfaces_reset (); |
718e3744 | 3938 | rip_distance_reset (); |
3939 | ||
3940 | rip_zclient_reset (); | |
3941 | } | |
3942 | ||
dc63bfd4 | 3943 | static void |
16705130 | 3944 | rip_if_rmap_update (struct if_rmap *if_rmap) |
3945 | { | |
3946 | struct interface *ifp; | |
3947 | struct rip_interface *ri; | |
3948 | struct route_map *rmap; | |
3949 | ||
1306c09a | 3950 | ifp = if_lookup_by_name (if_rmap->ifname, VRF_DEFAULT); |
16705130 | 3951 | if (ifp == NULL) |
3952 | return; | |
3953 | ||
3954 | ri = ifp->info; | |
3955 | ||
3956 | if (if_rmap->routemap[IF_RMAP_IN]) | |
3957 | { | |
3958 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_IN]); | |
3959 | if (rmap) | |
3960 | ri->routemap[IF_RMAP_IN] = rmap; | |
3961 | else | |
3962 | ri->routemap[IF_RMAP_IN] = NULL; | |
3963 | } | |
3964 | else | |
3965 | ri->routemap[RIP_FILTER_IN] = NULL; | |
3966 | ||
3967 | if (if_rmap->routemap[IF_RMAP_OUT]) | |
3968 | { | |
3969 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_OUT]); | |
3970 | if (rmap) | |
3971 | ri->routemap[IF_RMAP_OUT] = rmap; | |
3972 | else | |
3973 | ri->routemap[IF_RMAP_OUT] = NULL; | |
3974 | } | |
3975 | else | |
3976 | ri->routemap[RIP_FILTER_OUT] = NULL; | |
3977 | } | |
3978 | ||
3979 | void | |
3980 | rip_if_rmap_update_interface (struct interface *ifp) | |
3981 | { | |
3982 | struct if_rmap *if_rmap; | |
3983 | ||
3984 | if_rmap = if_rmap_lookup (ifp->name); | |
3985 | if (if_rmap) | |
3986 | rip_if_rmap_update (if_rmap); | |
3987 | } | |
3988 | ||
dc63bfd4 | 3989 | static void |
16705130 | 3990 | rip_routemap_update_redistribute (void) |
3991 | { | |
3992 | int i; | |
3993 | ||
3994 | if (rip) | |
3995 | { | |
3996 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
3997 | { | |
3998 | if (rip->route_map[i].name) | |
3999 | rip->route_map[i].map = | |
4000 | route_map_lookup_by_name (rip->route_map[i].name); | |
4001 | } | |
4002 | } | |
4003 | } | |
4004 | ||
11dde9c2 | 4005 | /* ARGSUSED */ |
dc63bfd4 | 4006 | static void |
98b718a9 | 4007 | rip_routemap_update (const char *notused) |
16705130 | 4008 | { |
4009 | struct interface *ifp; | |
1eb8ef25 | 4010 | struct listnode *node, *nnode; |
16705130 | 4011 | |
b2d7c082 | 4012 | for (ALL_LIST_ELEMENTS (vrf_iflist (VRF_DEFAULT), node, nnode, ifp)) |
1eb8ef25 | 4013 | rip_if_rmap_update_interface (ifp); |
16705130 | 4014 | |
4015 | rip_routemap_update_redistribute (); | |
4016 | } | |
4017 | ||
718e3744 | 4018 | /* Allocate new rip structure and set default value. */ |
4019 | void | |
dc63bfd4 | 4020 | rip_init (void) |
718e3744 | 4021 | { |
718e3744 | 4022 | /* Install top nodes. */ |
4023 | install_node (&rip_node, config_write_rip); | |
4024 | ||
4025 | /* Install rip commands. */ | |
4026 | install_element (VIEW_NODE, &show_ip_rip_cmd); | |
16705130 | 4027 | install_element (VIEW_NODE, &show_ip_rip_status_cmd); |
718e3744 | 4028 | install_element (CONFIG_NODE, &router_rip_cmd); |
4029 | install_element (CONFIG_NODE, &no_router_rip_cmd); | |
4030 | ||
4031 | install_default (RIP_NODE); | |
4032 | install_element (RIP_NODE, &rip_version_cmd); | |
4033 | install_element (RIP_NODE, &no_rip_version_cmd); | |
718e3744 | 4034 | install_element (RIP_NODE, &rip_default_metric_cmd); |
4035 | install_element (RIP_NODE, &no_rip_default_metric_cmd); | |
718e3744 | 4036 | install_element (RIP_NODE, &rip_timers_cmd); |
4037 | install_element (RIP_NODE, &no_rip_timers_cmd); | |
4038 | install_element (RIP_NODE, &rip_route_cmd); | |
4039 | install_element (RIP_NODE, &no_rip_route_cmd); | |
4040 | install_element (RIP_NODE, &rip_distance_cmd); | |
4041 | install_element (RIP_NODE, &no_rip_distance_cmd); | |
4042 | install_element (RIP_NODE, &rip_distance_source_cmd); | |
4043 | install_element (RIP_NODE, &no_rip_distance_source_cmd); | |
4044 | install_element (RIP_NODE, &rip_distance_source_access_list_cmd); | |
4045 | install_element (RIP_NODE, &no_rip_distance_source_access_list_cmd); | |
8478ae7e LF |
4046 | install_element (RIP_NODE, &rip_allow_ecmp_cmd); |
4047 | install_element (RIP_NODE, &no_rip_allow_ecmp_cmd); | |
718e3744 | 4048 | |
4049 | /* Debug related init. */ | |
4050 | rip_debug_init (); | |
4051 | ||
718e3744 | 4052 | /* Access list install. */ |
4053 | access_list_init (); | |
11dde9c2 | 4054 | access_list_add_hook (rip_distribute_update_all_wrapper); |
4055 | access_list_delete_hook (rip_distribute_update_all_wrapper); | |
718e3744 | 4056 | |
4057 | /* Prefix list initialize.*/ | |
4058 | prefix_list_init (); | |
4059 | prefix_list_add_hook (rip_distribute_update_all); | |
4060 | prefix_list_delete_hook (rip_distribute_update_all); | |
4061 | ||
4062 | /* Distribute list install. */ | |
4063 | distribute_list_init (RIP_NODE); | |
4064 | distribute_list_add_hook (rip_distribute_update); | |
4065 | distribute_list_delete_hook (rip_distribute_update); | |
4066 | ||
16705130 | 4067 | /* Route-map */ |
4068 | rip_route_map_init (); | |
4069 | rip_offset_init (); | |
4070 | ||
4071 | route_map_add_hook (rip_routemap_update); | |
4072 | route_map_delete_hook (rip_routemap_update); | |
4073 | ||
4074 | if_rmap_init (RIP_NODE); | |
4075 | if_rmap_hook_add (rip_if_rmap_update); | |
4076 | if_rmap_hook_delete (rip_if_rmap_update); | |
4077 | ||
718e3744 | 4078 | /* Distance control. */ |
4079 | rip_distance_table = route_table_init (); | |
4080 | } |