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718e3744 | 1 | /* RIPng daemon |
2 | * Copyright (C) 1998, 1999 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | * 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | /* For struct udphdr. */ | |
25 | #include <netinet/udp.h> | |
26 | ||
27 | #include "prefix.h" | |
28 | #include "filter.h" | |
29 | #include "log.h" | |
30 | #include "thread.h" | |
31 | #include "memory.h" | |
32 | #include "if.h" | |
33 | #include "stream.h" | |
34 | #include "table.h" | |
35 | #include "command.h" | |
36 | #include "sockopt.h" | |
37 | #include "distribute.h" | |
38 | #include "plist.h" | |
39 | #include "routemap.h" | |
40 | #include "if_rmap.h" | |
41 | ||
42 | #include "ripngd/ripngd.h" | |
43 | #include "ripngd/ripng_route.h" | |
44 | #include "ripngd/ripng_debug.h" | |
45 | ||
46 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
47 | ||
48 | /* RIPng structure which includes many parameters related to RIPng | |
49 | protocol. If ripng couldn't active or ripng doesn't configured, | |
50 | ripng->fd must be negative value. */ | |
51 | struct ripng *ripng = NULL; | |
52 | ||
53 | enum | |
54 | { | |
55 | ripng_all_route, | |
56 | ripng_changed_route, | |
57 | ripng_split_horizon, | |
58 | ripng_no_split_horizon | |
59 | }; | |
60 | ||
61 | /* Prototypes. */ | |
62 | void | |
63 | ripng_output_process (struct interface *, struct sockaddr_in6 *, int, int); | |
64 | ||
65 | int | |
66 | ripng_triggered_update (struct thread *); | |
67 | ||
68 | /* RIPng next hop specification. */ | |
69 | struct ripng_nexthop | |
70 | { | |
71 | enum ripng_nexthop_type | |
72 | { | |
73 | RIPNG_NEXTHOP_UNSPEC, | |
74 | RIPNG_NEXTHOP_ADDRESS | |
75 | } flag; | |
76 | struct in6_addr address; | |
77 | }; | |
78 | \f | |
79 | /* Utility function for making IPv6 address string. */ | |
80 | const char * | |
81 | inet6_ntop (struct in6_addr *p) | |
82 | { | |
83 | static char buf[INET6_ADDRSTRLEN]; | |
84 | ||
85 | inet_ntop (AF_INET6, p, buf, INET6_ADDRSTRLEN); | |
86 | ||
87 | return buf; | |
88 | } | |
89 | ||
90 | /* Allocate new ripng information. */ | |
91 | struct ripng_info * | |
92 | ripng_info_new () | |
93 | { | |
94 | struct ripng_info *new; | |
95 | ||
96 | new = XCALLOC (MTYPE_RIPNG_ROUTE, sizeof (struct ripng_info)); | |
97 | return new; | |
98 | } | |
99 | ||
100 | /* Free ripng information. */ | |
101 | void | |
102 | ripng_info_free (struct ripng_info *rinfo) | |
103 | { | |
104 | XFREE (MTYPE_RIPNG_ROUTE, rinfo); | |
105 | } | |
106 | \f | |
107 | static int | |
108 | setsockopt_so_recvbuf (int sock, int size) | |
109 | { | |
110 | int ret; | |
111 | ||
112 | ret = setsockopt (sock, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof (int)); | |
113 | if (ret < 0) | |
114 | zlog (NULL, LOG_ERR, "can't setsockopt SO_RCVBUF"); | |
115 | return ret; | |
116 | } | |
117 | ||
118 | /* Create ripng socket. */ | |
119 | int | |
120 | ripng_make_socket (void) | |
121 | { | |
122 | int ret; | |
123 | int sock; | |
124 | struct sockaddr_in6 ripaddr; | |
125 | ||
126 | sock = socket (AF_INET6, SOCK_DGRAM, 0); | |
127 | if (sock < 0) | |
128 | { | |
129 | zlog (NULL, LOG_ERR, "Can't make ripng socket"); | |
130 | return sock; | |
131 | } | |
132 | ||
133 | ret = setsockopt_so_recvbuf (sock, 8096); | |
134 | if (ret < 0) | |
135 | return ret; | |
136 | ret = setsockopt_ipv6_pktinfo (sock, 1); | |
137 | if (ret < 0) | |
138 | return ret; | |
139 | ret = setsockopt_ipv6_multicast_hops (sock, 255); | |
140 | if (ret < 0) | |
141 | return ret; | |
142 | ret = setsockopt_ipv6_multicast_loop (sock, 0); | |
143 | if (ret < 0) | |
144 | return ret; | |
145 | ret = setsockopt_ipv6_hoplimit (sock, 1); | |
146 | if (ret < 0) | |
147 | return ret; | |
148 | ||
149 | memset (&ripaddr, 0, sizeof (ripaddr)); | |
150 | ripaddr.sin6_family = AF_INET6; | |
151 | #ifdef SIN6_LEN | |
152 | ripaddr.sin6_len = sizeof (struct sockaddr_in6); | |
153 | #endif /* SIN6_LEN */ | |
154 | ripaddr.sin6_port = htons (RIPNG_PORT_DEFAULT); | |
155 | ||
156 | ret = bind (sock, (struct sockaddr *) &ripaddr, sizeof (ripaddr)); | |
157 | if (ret < 0) | |
158 | { | |
159 | zlog (NULL, LOG_ERR, "Can't bind ripng socket: %s.", strerror (errno)); | |
160 | return ret; | |
161 | } | |
162 | return sock; | |
163 | } | |
164 | ||
165 | /* Send RIPng packet. */ | |
166 | int | |
167 | ripng_send_packet (caddr_t buf, int bufsize, struct sockaddr_in6 *to, | |
168 | struct interface *ifp) | |
169 | { | |
170 | int ret; | |
171 | struct msghdr msg; | |
172 | struct iovec iov; | |
173 | struct cmsghdr *cmsgptr; | |
174 | char adata [256]; | |
175 | struct in6_pktinfo *pkt; | |
176 | struct sockaddr_in6 addr; | |
177 | ||
178 | #ifdef DEBUG | |
179 | if (to) | |
180 | zlog_info ("DEBUG RIPng: send to %s", inet6_ntop (&to->sin6_addr)); | |
181 | zlog_info ("DEBUG RIPng: send if %s", ifp->name); | |
182 | zlog_info ("DEBUG RIPng: send packet size %d", bufsize); | |
183 | #endif /* DEBUG */ | |
184 | ||
185 | memset (&addr, 0, sizeof (struct sockaddr_in6)); | |
186 | addr.sin6_family = AF_INET6; | |
187 | #ifdef SIN6_LEN | |
188 | addr.sin6_len = sizeof (struct sockaddr_in6); | |
189 | #endif /* SIN6_LEN */ | |
190 | addr.sin6_flowinfo = htonl (RIPNG_PRIORITY_DEFAULT); | |
191 | ||
192 | /* When destination is specified. */ | |
193 | if (to != NULL) | |
194 | { | |
195 | addr.sin6_addr = to->sin6_addr; | |
196 | addr.sin6_port = to->sin6_port; | |
197 | } | |
198 | else | |
199 | { | |
200 | inet_pton(AF_INET6, RIPNG_GROUP, &addr.sin6_addr); | |
201 | addr.sin6_port = htons (RIPNG_PORT_DEFAULT); | |
202 | } | |
203 | ||
204 | msg.msg_name = (void *) &addr; | |
205 | msg.msg_namelen = sizeof (struct sockaddr_in6); | |
206 | msg.msg_iov = &iov; | |
207 | msg.msg_iovlen = 1; | |
208 | msg.msg_control = (void *) adata; | |
209 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
210 | ||
211 | iov.iov_base = buf; | |
212 | iov.iov_len = bufsize; | |
213 | ||
214 | cmsgptr = (struct cmsghdr *)adata; | |
215 | cmsgptr->cmsg_len = CMSG_LEN(sizeof (struct in6_pktinfo)); | |
216 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
217 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
218 | ||
219 | pkt = (struct in6_pktinfo *) CMSG_DATA (cmsgptr); | |
220 | memset (&pkt->ipi6_addr, 0, sizeof (struct in6_addr)); | |
221 | pkt->ipi6_ifindex = ifp->ifindex; | |
222 | ||
223 | ret = sendmsg (ripng->sock, &msg, 0); | |
224 | ||
225 | if (ret < 0) | |
226 | zlog_warn ("RIPng send fail on %s: %s", ifp->name, strerror (errno)); | |
227 | ||
228 | return ret; | |
229 | } | |
230 | ||
231 | /* Receive UDP RIPng packet from socket. */ | |
232 | int | |
233 | ripng_recv_packet (int sock, u_char *buf, int bufsize, | |
234 | struct sockaddr_in6 *from, unsigned int *ifindex, | |
235 | int *hoplimit) | |
236 | { | |
237 | int ret; | |
238 | struct msghdr msg; | |
239 | struct iovec iov; | |
240 | struct cmsghdr *cmsgptr; | |
241 | struct in6_addr dst; | |
242 | ||
243 | /* Ancillary data. This store cmsghdr and in6_pktinfo. But at this | |
244 | point I can't determine size of cmsghdr */ | |
245 | char adata[1024]; | |
246 | ||
247 | /* Fill in message and iovec. */ | |
248 | msg.msg_name = (void *) from; | |
249 | msg.msg_namelen = sizeof (struct sockaddr_in6); | |
250 | msg.msg_iov = &iov; | |
251 | msg.msg_iovlen = 1; | |
252 | msg.msg_control = (void *) adata; | |
253 | msg.msg_controllen = sizeof adata; | |
254 | iov.iov_base = buf; | |
255 | iov.iov_len = bufsize; | |
256 | ||
257 | /* If recvmsg fail return minus value. */ | |
258 | ret = recvmsg (sock, &msg, 0); | |
259 | if (ret < 0) | |
260 | return ret; | |
261 | ||
262 | for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; | |
263 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) | |
264 | { | |
265 | /* I want interface index which this packet comes from. */ | |
266 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 && | |
267 | cmsgptr->cmsg_type == IPV6_PKTINFO) | |
268 | { | |
269 | struct in6_pktinfo *ptr; | |
270 | ||
271 | ptr = (struct in6_pktinfo *) CMSG_DATA (cmsgptr); | |
272 | *ifindex = ptr->ipi6_ifindex; | |
273 | dst = ptr->ipi6_addr; | |
274 | ||
275 | if (*ifindex == 0) | |
276 | zlog_warn ("Interface index returned by IPV6_PKTINFO is zero"); | |
277 | } | |
278 | ||
279 | /* Incoming packet's multicast hop limit. */ | |
280 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 && | |
281 | cmsgptr->cmsg_type == IPV6_HOPLIMIT) | |
282 | *hoplimit = *((int *) CMSG_DATA (cmsgptr)); | |
283 | } | |
284 | ||
285 | /* Hoplimit check shold be done when destination address is | |
286 | multicast address. */ | |
287 | if (! IN6_IS_ADDR_MULTICAST (&dst)) | |
288 | *hoplimit = -1; | |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
293 | /* Dump rip packet */ | |
294 | void | |
295 | ripng_packet_dump (struct ripng_packet *packet, int size, char *sndrcv) | |
296 | { | |
297 | caddr_t lim; | |
298 | struct rte *rte; | |
299 | char *command_str; | |
300 | ||
301 | /* Set command string. */ | |
302 | if (packet->command == RIPNG_REQUEST) | |
303 | command_str = "request"; | |
304 | else if (packet->command == RIPNG_RESPONSE) | |
305 | command_str = "response"; | |
306 | else | |
307 | command_str = "unknown"; | |
308 | ||
309 | /* Dump packet header. */ | |
310 | zlog_info ("%s %s version %d packet size %d", | |
311 | sndrcv, command_str, packet->version, size); | |
312 | ||
313 | /* Dump each routing table entry. */ | |
314 | rte = packet->rte; | |
315 | ||
316 | for (lim = (caddr_t) packet + size; (caddr_t) rte < lim; rte++) | |
317 | { | |
318 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
319 | zlog_info (" nexthop %s/%d", inet6_ntop (&rte->addr), rte->prefixlen); | |
320 | else | |
321 | zlog_info (" %s/%d metric %d tag %d", | |
322 | inet6_ntop (&rte->addr), rte->prefixlen, | |
323 | rte->metric, ntohs (rte->tag)); | |
324 | } | |
325 | } | |
326 | ||
327 | /* RIPng next hop address RTE (Route Table Entry). */ | |
328 | void | |
329 | ripng_nexthop_rte (struct rte *rte, | |
330 | struct sockaddr_in6 *from, | |
331 | struct ripng_nexthop *nexthop) | |
332 | { | |
333 | char buf[INET6_BUFSIZ]; | |
334 | ||
335 | /* Logging before checking RTE. */ | |
336 | if (IS_RIPNG_DEBUG_RECV) | |
337 | zlog_info ("RIPng nexthop RTE address %s tag %d prefixlen %d", | |
338 | inet6_ntop (&rte->addr), ntohs (rte->tag), rte->prefixlen); | |
339 | ||
340 | /* RFC2080 2.1.1 Next Hop: | |
341 | The route tag and prefix length in the next hop RTE must be | |
342 | set to zero on sending and ignored on receiption. */ | |
343 | if (ntohs (rte->tag) != 0) | |
344 | zlog_warn ("RIPng nexthop RTE with non zero tag value %d from %s", | |
345 | ntohs (rte->tag), inet6_ntop (&from->sin6_addr)); | |
346 | ||
347 | if (rte->prefixlen != 0) | |
348 | zlog_warn ("RIPng nexthop RTE with non zero prefixlen value %d from %s", | |
349 | rte->prefixlen, inet6_ntop (&from->sin6_addr)); | |
350 | ||
351 | /* Specifying a value of 0:0:0:0:0:0:0:0 in the prefix field of a | |
352 | next hop RTE indicates that the next hop address should be the | |
353 | originator of the RIPng advertisement. An address specified as a | |
354 | next hop must be a link-local address. */ | |
355 | if (IN6_IS_ADDR_UNSPECIFIED (&rte->addr)) | |
356 | { | |
357 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
358 | memset (&nexthop->address, 0, sizeof (struct in6_addr)); | |
359 | return; | |
360 | } | |
361 | ||
362 | if (IN6_IS_ADDR_LINKLOCAL (&rte->addr)) | |
363 | { | |
364 | nexthop->flag = RIPNG_NEXTHOP_ADDRESS; | |
365 | IPV6_ADDR_COPY (&nexthop->address, &rte->addr); | |
366 | return; | |
367 | } | |
368 | ||
369 | /* The purpose of the next hop RTE is to eliminate packets being | |
370 | routed through extra hops in the system. It is particularly useful | |
371 | when RIPng is not being run on all of the routers on a network. | |
372 | Note that next hop RTE is "advisory". That is, if the provided | |
373 | information is ignored, a possibly sub-optimal, but absolutely | |
374 | valid, route may be taken. If the received next hop address is not | |
375 | a link-local address, it should be treated as 0:0:0:0:0:0:0:0. */ | |
376 | zlog_warn ("RIPng nexthop RTE with non link-local address %s from %s", | |
377 | inet6_ntop (&rte->addr), | |
378 | inet_ntop (AF_INET6, &from->sin6_addr, buf, INET6_BUFSIZ)); | |
379 | ||
380 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
381 | memset (&nexthop->address, 0, sizeof (struct in6_addr)); | |
382 | ||
383 | return; | |
384 | } | |
385 | ||
386 | /* If ifp has same link-local address then return 1. */ | |
387 | int | |
388 | ripng_lladdr_check (struct interface *ifp, struct in6_addr *addr) | |
389 | { | |
390 | listnode listnode; | |
391 | struct connected *connected; | |
392 | struct prefix *p; | |
393 | ||
394 | for (listnode = listhead (ifp->connected); listnode; nextnode (listnode)) | |
395 | if ((connected = getdata (listnode)) != NULL) | |
396 | { | |
397 | p = connected->address; | |
398 | ||
399 | if (p->family == AF_INET6 && | |
400 | IN6_IS_ADDR_LINKLOCAL (&p->u.prefix6) && | |
401 | IN6_ARE_ADDR_EQUAL (&p->u.prefix6, addr)) | |
402 | return 1; | |
403 | } | |
404 | return 0; | |
405 | } | |
406 | ||
407 | /* RIPng route garbage collect timer. */ | |
408 | int | |
409 | ripng_garbage_collect (struct thread *t) | |
410 | { | |
411 | struct ripng_info *rinfo; | |
412 | struct route_node *rp; | |
413 | ||
414 | rinfo = THREAD_ARG (t); | |
415 | rinfo->t_garbage_collect = NULL; | |
416 | ||
417 | /* Off timeout timer. */ | |
418 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
419 | ||
420 | /* Get route_node pointer. */ | |
421 | rp = rinfo->rp; | |
422 | ||
423 | /* Delete this route from the kernel. */ | |
424 | ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, | |
425 | &rinfo->nexthop, rinfo->ifindex); | |
426 | rinfo->flags &= ~RIPNG_RTF_FIB; | |
427 | ||
428 | /* Aggregate count decrement. */ | |
429 | ripng_aggregate_decrement (rp, rinfo); | |
430 | ||
431 | /* Unlock route_node. */ | |
432 | rp->info = NULL; | |
433 | route_unlock_node (rp); | |
434 | ||
435 | /* Free RIPng routing information. */ | |
436 | ripng_info_free (rinfo); | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
441 | /* Timeout RIPng routes. */ | |
442 | int | |
443 | ripng_timeout (struct thread *t) | |
444 | { | |
445 | struct ripng_info *rinfo; | |
446 | struct route_node *rp; | |
447 | ||
448 | rinfo = THREAD_ARG (t); | |
449 | rinfo->t_timeout = NULL; | |
450 | ||
451 | /* Get route_node pointer. */ | |
452 | rp = rinfo->rp; | |
453 | ||
454 | /* - The garbage-collection timer is set for 120 seconds. */ | |
455 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, ripng_garbage_collect, | |
456 | ripng->garbage_time); | |
457 | ||
458 | /* - The metric for the route is set to 16 (infinity). This causes | |
459 | the route to be removed from service. */ | |
460 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
461 | ||
462 | /* - The route change flag is to indicate that this entry has been | |
463 | changed. */ | |
464 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
465 | ||
466 | /* - The output process is signalled to trigger a response. */ | |
467 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | void | |
473 | ripng_timeout_update (struct ripng_info *rinfo) | |
474 | { | |
475 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
476 | { | |
477 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
478 | RIPNG_TIMER_ON (rinfo->t_timeout, ripng_timeout, ripng->timeout_time); | |
479 | } | |
480 | } | |
481 | ||
482 | /* Process RIPng route according to RFC2080. */ | |
483 | void | |
484 | ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, | |
485 | struct ripng_nexthop *ripng_nexthop, | |
486 | struct interface *ifp) | |
487 | { | |
488 | struct prefix_ipv6 p; | |
489 | struct route_node *rp; | |
490 | struct ripng_info *rinfo; | |
491 | struct ripng_interface *ri; | |
492 | struct in6_addr *nexthop; | |
493 | u_char oldmetric; | |
494 | int same = 0; | |
495 | ||
496 | /* Make prefix structure. */ | |
497 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
498 | p.family = AF_INET6; | |
499 | /* p.prefix = rte->addr; */ | |
500 | IPV6_ADDR_COPY (&p.prefix, &rte->addr); | |
501 | p.prefixlen = rte->prefixlen; | |
502 | ||
503 | /* Make sure mask is applied. */ | |
504 | /* XXX We have to check the prefix is valid or not before call | |
505 | apply_mask_ipv6. */ | |
506 | apply_mask_ipv6 (&p); | |
507 | ||
508 | /* Apply input filters. */ | |
509 | ri = ifp->info; | |
510 | ||
511 | if (ri->list[RIPNG_FILTER_IN]) | |
512 | { | |
513 | if (access_list_apply (ri->list[RIPNG_FILTER_IN], &p) == FILTER_DENY) | |
514 | { | |
515 | if (IS_RIPNG_DEBUG_PACKET) | |
516 | zlog_info ("RIPng %s/%d is filtered by distribute in", | |
517 | inet6_ntop (&p.prefix), p.prefixlen); | |
518 | return; | |
519 | } | |
520 | } | |
521 | if (ri->prefix[RIPNG_FILTER_IN]) | |
522 | { | |
523 | if (prefix_list_apply (ri->prefix[RIPNG_FILTER_IN], &p) == PREFIX_DENY) | |
524 | { | |
525 | if (IS_RIPNG_DEBUG_PACKET) | |
526 | zlog_info ("RIPng %s/%d is filtered by prefix-list in", | |
527 | inet6_ntop (&p.prefix), p.prefixlen); | |
528 | return; | |
529 | } | |
530 | } | |
531 | ||
532 | /* Modify entry. */ | |
533 | if (ri->routemap[RIPNG_FILTER_IN]) | |
534 | { | |
535 | int ret; | |
536 | struct ripng_info newinfo; | |
537 | ||
538 | memset (&rinfo, 0, sizeof (struct ripng_info)); | |
539 | newinfo.metric = rte->metric; | |
540 | ||
541 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_IN], | |
542 | (struct prefix *)&p, RMAP_RIPNG, &newinfo); | |
543 | ||
544 | if (ret == RMAP_DENYMATCH) | |
545 | { | |
546 | if (IS_RIPNG_DEBUG_PACKET) | |
547 | zlog_info ("RIPng %s/%d is filtered by route-map in", | |
548 | inet6_ntop (&p.prefix), p.prefixlen); | |
549 | return; | |
550 | } | |
551 | ||
552 | rte->metric = newinfo.metric; | |
553 | } | |
554 | ||
555 | /* Set nexthop pointer. */ | |
556 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
557 | nexthop = &ripng_nexthop->address; | |
558 | else | |
559 | nexthop = &from->sin6_addr; | |
560 | ||
561 | /* Lookup RIPng routing table. */ | |
562 | rp = route_node_get (ripng->table, (struct prefix *) &p); | |
563 | ||
564 | if (rp->info == NULL) | |
565 | { | |
566 | /* Now, check to see whether there is already an explicit route | |
567 | for the destination prefix. If there is no such route, add | |
568 | this route to the routing table, unless the metric is | |
569 | infinity (there is no point in adding a route which | |
570 | unusable). */ | |
571 | if (rte->metric != RIPNG_METRIC_INFINITY) | |
572 | { | |
573 | rinfo = ripng_info_new (); | |
574 | ||
575 | /* - Setting the destination prefix and length to those in | |
576 | the RTE. */ | |
577 | rp->info = rinfo; | |
578 | rinfo->rp = rp; | |
579 | ||
580 | /* - Setting the metric to the newly calculated metric (as | |
581 | described above). */ | |
582 | rinfo->metric = rte->metric; | |
583 | rinfo->tag = ntohs (rte->tag); | |
584 | ||
585 | /* - Set the next hop address to be the address of the router | |
586 | from which the datagram came or the next hop address | |
587 | specified by a next hop RTE. */ | |
588 | IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); | |
589 | IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr); | |
590 | rinfo->ifindex = ifp->ifindex; | |
591 | ||
592 | /* - Initialize the timeout for the route. If the | |
593 | garbage-collection timer is running for this route, stop it. */ | |
594 | ripng_timeout_update (rinfo); | |
595 | ||
596 | /* - Set the route change flag. */ | |
597 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
598 | ||
599 | /* - Signal the output process to trigger an update (see section | |
600 | 2.5). */ | |
601 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
602 | ||
603 | /* Finally, route goes into the kernel. */ | |
604 | rinfo->type = ZEBRA_ROUTE_RIPNG; | |
605 | rinfo->sub_type = RIPNG_ROUTE_RTE; | |
606 | ||
607 | ripng_zebra_ipv6_add (&p, &rinfo->nexthop, rinfo->ifindex); | |
608 | rinfo->flags |= RIPNG_RTF_FIB; | |
609 | ||
610 | /* Aggregate check. */ | |
611 | ripng_aggregate_increment (rp, rinfo); | |
612 | } | |
613 | } | |
614 | else | |
615 | { | |
616 | rinfo = rp->info; | |
617 | ||
618 | /* If there is an existing route, compare the next hop address | |
619 | to the address of the router from which the datagram came. | |
620 | If this datagram is from the same router as the existing | |
621 | route, reinitialize the timeout. */ | |
622 | same = (IN6_ARE_ADDR_EQUAL (&rinfo->from, &from->sin6_addr) | |
623 | && (rinfo->ifindex == ifp->ifindex)); | |
624 | ||
625 | if (same) | |
626 | ripng_timeout_update (rinfo); | |
627 | ||
628 | /* Next, compare the metrics. If the datagram is from the same | |
629 | router as the existing route, and the new metric is different | |
630 | than the old one; or, if the new metric is lower than the old | |
631 | one; do the following actions: */ | |
632 | if ((same && rinfo->metric != rte->metric) || | |
633 | rte->metric < rinfo->metric) | |
634 | { | |
635 | /* - Adopt the route from the datagram. That is, put the | |
636 | new metric in, and adjust the next hop address (if | |
637 | necessary). */ | |
638 | oldmetric = rinfo->metric; | |
639 | rinfo->metric = rte->metric; | |
640 | rinfo->tag = ntohs (rte->tag); | |
641 | ||
642 | if (! IN6_ARE_ADDR_EQUAL (&rinfo->nexthop, nexthop)) | |
643 | { | |
644 | ripng_zebra_ipv6_delete (&p, &rinfo->nexthop, rinfo->ifindex); | |
645 | ripng_zebra_ipv6_add (&p, nexthop, ifp->ifindex); | |
646 | rinfo->flags |= RIPNG_RTF_FIB; | |
647 | ||
648 | IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); | |
649 | } | |
650 | IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr); | |
651 | rinfo->ifindex = ifp->ifindex; | |
652 | ||
653 | /* - Set the route change flag and signal the output process | |
654 | to trigger an update. */ | |
655 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
656 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
657 | ||
658 | /* - If the new metric is infinity, start the deletion | |
659 | process (described above); */ | |
660 | if (rinfo->metric == RIPNG_METRIC_INFINITY) | |
661 | { | |
662 | /* If the new metric is infinity, the deletion process | |
663 | begins for the route, which is no longer used for | |
664 | routing packets. Note that the deletion process is | |
665 | started only when the metric is first set to | |
666 | infinity. If the metric was already infinity, then a | |
667 | new deletion process is not started. */ | |
668 | if (oldmetric != RIPNG_METRIC_INFINITY) | |
669 | { | |
670 | /* - The garbage-collection timer is set for 120 seconds. */ | |
671 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, | |
672 | ripng_garbage_collect, ripng->garbage_time); | |
673 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
674 | ||
675 | /* - The metric for the route is set to 16 | |
676 | (infinity). This causes the route to be removed | |
677 | from service.*/ | |
678 | /* - The route change flag is to indicate that this | |
679 | entry has been changed. */ | |
680 | /* - The output process is signalled to trigger a | |
681 | response. */ | |
682 | ; /* Above processes are already done previously. */ | |
683 | } | |
684 | } | |
685 | else | |
686 | { | |
687 | /* otherwise, re-initialize the timeout. */ | |
688 | ripng_timeout_update (rinfo); | |
689 | ||
690 | /* Should a new route to this network be established | |
691 | while the garbage-collection timer is running, the | |
692 | new route will replace the one that is about to be | |
693 | deleted. In this case the garbage-collection timer | |
694 | must be cleared. */ | |
695 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
696 | } | |
697 | } | |
698 | /* Unlock tempolary lock of the route. */ | |
699 | route_unlock_node (rp); | |
700 | } | |
701 | } | |
702 | ||
703 | /* Add redistributed route to RIPng table. */ | |
704 | void | |
705 | ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p, | |
706 | unsigned int ifindex) | |
707 | { | |
708 | struct route_node *rp; | |
709 | struct ripng_info *rinfo; | |
710 | ||
711 | /* Redistribute route */ | |
712 | if (IN6_IS_ADDR_LINKLOCAL (&p->prefix)) | |
713 | return; | |
714 | if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) | |
715 | return; | |
716 | ||
717 | rp = route_node_get (ripng->table, (struct prefix *) p); | |
718 | rinfo = rp->info; | |
719 | ||
720 | if (rinfo) | |
721 | { | |
722 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
723 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
724 | route_unlock_node (rp); | |
725 | } | |
726 | else | |
727 | { | |
728 | rinfo = ripng_info_new (); | |
729 | ripng_aggregate_increment (rp, rinfo); | |
730 | } | |
731 | ||
732 | rinfo->type = type; | |
733 | rinfo->sub_type = sub_type; | |
734 | rinfo->ifindex = ifindex; | |
735 | rinfo->metric = 1; | |
736 | rinfo->flags |= RIPNG_RTF_FIB; | |
737 | ||
738 | rinfo->rp = rp; | |
739 | rp->info = rinfo; | |
740 | } | |
741 | ||
742 | /* Delete redistributed route to RIPng table. */ | |
743 | void | |
744 | ripng_redistribute_delete (int type, int sub_type, struct prefix_ipv6 *p, | |
745 | unsigned int ifindex) | |
746 | { | |
747 | struct route_node *rp; | |
748 | struct ripng_info *rinfo; | |
749 | ||
750 | if (IN6_IS_ADDR_LINKLOCAL (&p->prefix)) | |
751 | return; | |
752 | if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) | |
753 | return; | |
754 | ||
755 | rp = route_node_lookup (ripng->table, (struct prefix *) p); | |
756 | ||
757 | if (rp) | |
758 | { | |
759 | rinfo = rp->info; | |
760 | ||
761 | if (rinfo != NULL | |
762 | && rinfo->type == type | |
763 | && rinfo->sub_type == sub_type | |
764 | && rinfo->ifindex == ifindex) | |
765 | { | |
766 | rp->info = NULL; | |
767 | ||
768 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
769 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
770 | ||
771 | ripng_info_free (rinfo); | |
772 | ||
773 | route_unlock_node (rp); | |
774 | } | |
775 | ||
776 | /* For unlock route_node_lookup (). */ | |
777 | route_unlock_node (rp); | |
778 | } | |
779 | } | |
780 | ||
781 | /* Withdraw redistributed route. */ | |
782 | void | |
783 | ripng_redistribute_withdraw (int type) | |
784 | { | |
785 | struct route_node *rp; | |
786 | struct ripng_info *rinfo; | |
787 | ||
788 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
789 | if ((rinfo = rp->info) != NULL) | |
790 | { | |
791 | if (rinfo->type == type) | |
792 | { | |
793 | rp->info = NULL; | |
794 | ||
795 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
796 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
797 | ||
798 | ripng_info_free (rinfo); | |
799 | ||
800 | route_unlock_node (rp); | |
801 | } | |
802 | } | |
803 | } | |
804 | ||
805 | /* RIP routing information. */ | |
806 | void | |
807 | ripng_response_process (struct ripng_packet *packet, int size, | |
808 | struct sockaddr_in6 *from, struct interface *ifp, | |
809 | int hoplimit) | |
810 | { | |
811 | caddr_t lim; | |
812 | struct rte *rte; | |
813 | struct ripng_nexthop nexthop; | |
814 | ||
815 | /* RFC2080 2.4.2 Response Messages: | |
816 | The Response must be ignored if it is not from the RIPng port. */ | |
817 | if (ntohs (from->sin6_port) != RIPNG_PORT_DEFAULT) | |
818 | { | |
819 | zlog_warn ("RIPng packet comes from non RIPng port %d from %s", | |
820 | ntohs (from->sin6_port), inet6_ntop (&from->sin6_addr)); | |
821 | return; | |
822 | } | |
823 | ||
824 | /* The datagram's IPv6 source address should be checked to see | |
825 | whether the datagram is from a valid neighbor; the source of the | |
826 | datagram must be a link-local address. */ | |
827 | if (! IN6_IS_ADDR_LINKLOCAL(&from->sin6_addr)) | |
828 | { | |
829 | zlog_warn ("RIPng packet comes from non link local address %s", | |
830 | inet6_ntop (&from->sin6_addr)); | |
831 | return; | |
832 | } | |
833 | ||
834 | /* It is also worth checking to see whether the response is from one | |
835 | of the router's own addresses. Interfaces on broadcast networks | |
836 | may receive copies of their own multicasts immediately. If a | |
837 | router processes its own output as new input, confusion is likely, | |
838 | and such datagrams must be ignored. */ | |
839 | if (ripng_lladdr_check (ifp, &from->sin6_addr)) | |
840 | { | |
841 | zlog_warn ("RIPng packet comes from my own link local address %s", | |
842 | inet6_ntop (&from->sin6_addr)); | |
843 | return; | |
844 | } | |
845 | ||
846 | /* As an additional check, periodic advertisements must have their | |
847 | hop counts set to 255, and inbound, multicast packets sent from the | |
848 | RIPng port (i.e. periodic advertisement or triggered update | |
849 | packets) must be examined to ensure that the hop count is 255. */ | |
850 | if (hoplimit >= 0 && hoplimit != 255) | |
851 | { | |
852 | zlog_warn ("RIPng packet comes with non 255 hop count %d from %s", | |
853 | hoplimit, inet6_ntop (&from->sin6_addr)); | |
854 | return; | |
855 | } | |
856 | ||
857 | /* Reset nexthop. */ | |
858 | memset (&nexthop, 0, sizeof (struct ripng_nexthop)); | |
859 | nexthop.flag = RIPNG_NEXTHOP_UNSPEC; | |
860 | ||
861 | /* Set RTE pointer. */ | |
862 | rte = packet->rte; | |
863 | ||
864 | for (lim = ((caddr_t) packet) + size; (caddr_t) rte < lim; rte++) | |
865 | { | |
866 | /* First of all, we have to check this RTE is next hop RTE or | |
867 | not. Next hop RTE is completely different with normal RTE so | |
868 | we need special treatment. */ | |
869 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
870 | { | |
871 | ripng_nexthop_rte (rte, from, &nexthop); | |
872 | continue; | |
873 | } | |
874 | ||
875 | /* RTE information validation. */ | |
876 | ||
877 | /* - is the destination prefix valid (e.g., not a multicast | |
878 | prefix and not a link-local address) A link-local address | |
879 | should never be present in an RTE. */ | |
880 | if (IN6_IS_ADDR_MULTICAST (&rte->addr)) | |
881 | { | |
882 | zlog_warn ("Destination prefix is a multicast address %s/%d [%d]", | |
883 | inet6_ntop (&rte->addr), rte->prefixlen, rte->metric); | |
884 | continue; | |
885 | } | |
886 | if (IN6_IS_ADDR_LINKLOCAL (&rte->addr)) | |
887 | { | |
888 | zlog_warn ("Destination prefix is a link-local address %s/%d [%d]", | |
889 | inet6_ntop (&rte->addr), rte->prefixlen, rte->metric); | |
890 | continue; | |
891 | } | |
892 | if (IN6_IS_ADDR_LOOPBACK (&rte->addr)) | |
893 | { | |
894 | zlog_warn ("Destination prefix is a loopback address %s/%d [%d]", | |
895 | inet6_ntop (&rte->addr), rte->prefixlen, rte->metric); | |
896 | continue; | |
897 | } | |
898 | ||
899 | /* - is the prefix length valid (i.e., between 0 and 128, | |
900 | inclusive) */ | |
901 | if (rte->prefixlen > 128) | |
902 | { | |
903 | zlog_warn ("Invalid prefix length %s/%d from %s%%%s", | |
904 | inet6_ntop (&rte->addr), rte->prefixlen, | |
905 | inet6_ntop (&from->sin6_addr), ifp->name); | |
906 | continue; | |
907 | } | |
908 | ||
909 | /* - is the metric valid (i.e., between 1 and 16, inclusive) */ | |
910 | if (! (rte->metric >= 1 && rte->metric <= 16)) | |
911 | { | |
912 | zlog_warn ("Invalid metric %d from %s%%%s", rte->metric, | |
913 | inet6_ntop (&from->sin6_addr), ifp->name); | |
914 | continue; | |
915 | } | |
916 | ||
917 | /* Metric calculation. */ | |
918 | rte->metric += ifp->metric; | |
919 | if (rte->metric > RIPNG_METRIC_INFINITY) | |
920 | rte->metric = RIPNG_METRIC_INFINITY; | |
921 | ||
922 | /* Routing table updates. */ | |
923 | ripng_route_process (rte, from, &nexthop, ifp); | |
924 | } | |
925 | } | |
926 | ||
927 | /* Response to request message. */ | |
928 | void | |
929 | ripng_request_process (struct ripng_packet *packet,int size, | |
930 | struct sockaddr_in6 *from, struct interface *ifp) | |
931 | { | |
932 | caddr_t lim; | |
933 | struct rte *rte; | |
934 | struct prefix_ipv6 p; | |
935 | struct route_node *rp; | |
936 | struct ripng_info *rinfo; | |
937 | struct ripng_interface *ri; | |
938 | ||
939 | /* Check RIPng process is enabled on this interface. */ | |
940 | ri = ifp->info; | |
941 | if (! ri->running) | |
942 | return; | |
943 | ||
944 | /* When passive interface is specified, suppress responses */ | |
945 | if (ri->passive) | |
946 | return; | |
947 | ||
948 | lim = ((caddr_t) packet) + size; | |
949 | rte = packet->rte; | |
950 | ||
951 | /* The Request is processed entry by entry. If there are no | |
952 | entries, no response is given. */ | |
953 | if (lim == (caddr_t) rte) | |
954 | return; | |
955 | ||
956 | /* There is one special case. If there is exactly one entry in the | |
957 | request, and it has a destination prefix of zero, a prefix length | |
958 | of zero, and a metric of infinity (i.e., 16), then this is a | |
959 | request to send the entire routing table. In that case, a call | |
960 | is made to the output process to send the routing table to the | |
961 | requesting address/port. */ | |
962 | if (lim == ((caddr_t) (rte + 1)) && | |
963 | IN6_IS_ADDR_UNSPECIFIED (&rte->addr) && | |
964 | rte->prefixlen == 0 && | |
965 | rte->metric == RIPNG_METRIC_INFINITY) | |
966 | { | |
967 | /* All route with split horizon */ | |
968 | ripng_output_process (ifp, from, ripng_all_route, ripng_split_horizon); | |
969 | } | |
970 | else | |
971 | { | |
972 | /* Except for this special case, processing is quite simple. | |
973 | Examine the list of RTEs in the Request one by one. For each | |
974 | entry, look up the destination in the router's routing | |
975 | database and, if there is a route, put that route's metric in | |
976 | the metric field of the RTE. If there is no explicit route | |
977 | to the specified destination, put infinity in the metric | |
978 | field. Once all the entries have been filled in, change the | |
979 | command from Request to Response and send the datagram back | |
980 | to the requestor. */ | |
981 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
982 | p.family = AF_INET6; | |
983 | ||
984 | for (; ((caddr_t) rte) < lim; rte++) | |
985 | { | |
986 | p.prefix = rte->addr; | |
987 | p.prefixlen = rte->prefixlen; | |
988 | apply_mask_ipv6 (&p); | |
989 | ||
990 | rp = route_node_lookup (ripng->table, (struct prefix *) &p); | |
991 | ||
992 | if (rp) | |
993 | { | |
994 | rinfo = rp->info; | |
995 | rte->metric = rinfo->metric; | |
996 | route_unlock_node (rp); | |
997 | } | |
998 | else | |
999 | rte->metric = RIPNG_METRIC_INFINITY; | |
1000 | } | |
1001 | packet->command = RIPNG_RESPONSE; | |
1002 | ||
1003 | ripng_send_packet ((caddr_t) packet, size, from, ifp); | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | /* First entry point of reading RIPng packet. */ | |
1008 | int | |
1009 | ripng_read (struct thread *thread) | |
1010 | { | |
1011 | int len; | |
1012 | int sock; | |
1013 | struct sockaddr_in6 from; | |
1014 | struct ripng_packet *packet; | |
1015 | unsigned int ifindex; | |
1016 | struct interface *ifp; | |
1017 | int hoplimit = -1; | |
1018 | ||
1019 | /* Check ripng is active and alive. */ | |
1020 | assert (ripng != NULL); | |
1021 | assert (ripng->sock >= 0); | |
1022 | ||
1023 | /* Fetch thread data and set read pointer to empty for event | |
1024 | managing. `sock' sould be same as ripng->sock. */ | |
1025 | sock = THREAD_FD (thread); | |
1026 | ripng->t_read = NULL; | |
1027 | ||
1028 | /* Add myself to the next event. */ | |
1029 | ripng_event (RIPNG_READ, sock); | |
1030 | ||
1031 | /* Read RIPng packet. */ | |
1032 | len = ripng_recv_packet (sock, STREAM_DATA (ripng->ibuf), | |
1033 | STREAM_SIZE (ripng->ibuf), &from, &ifindex, | |
1034 | &hoplimit); | |
1035 | if (len < 0) | |
1036 | { | |
1037 | zlog_warn ("RIPng recvfrom failed: %s.", strerror (errno)); | |
1038 | return len; | |
1039 | } | |
1040 | ||
1041 | /* Check RTE boundary. RTE size (Packet length - RIPng header size | |
1042 | (4)) must be multiple size of one RTE size (20). */ | |
1043 | if (((len - 4) % 20) != 0) | |
1044 | { | |
1045 | zlog_warn ("RIPng invalid packet size %d from %s", len, | |
1046 | inet6_ntop (&from.sin6_addr)); | |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | packet = (struct ripng_packet *) STREAM_DATA (ripng->ibuf); | |
1051 | ifp = if_lookup_by_index (ifindex); | |
1052 | ||
1053 | /* RIPng packet received. */ | |
1054 | if (IS_RIPNG_DEBUG_EVENT) | |
1055 | zlog_info ("RIPng packet received from %s port %d on %s", | |
1056 | inet6_ntop (&from.sin6_addr), ntohs (from.sin6_port), | |
1057 | ifp ? ifp->name : "unknown"); | |
1058 | ||
1059 | /* Logging before packet checking. */ | |
1060 | if (IS_RIPNG_DEBUG_RECV) | |
1061 | ripng_packet_dump (packet, len, "RECV"); | |
1062 | ||
1063 | /* Packet comes from unknown interface. */ | |
1064 | if (ifp == NULL) | |
1065 | { | |
1066 | zlog_warn ("RIPng packet comes from unknown interface %d", ifindex); | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | /* Packet version mismatch checking. */ | |
1071 | if (packet->version != ripng->version) | |
1072 | { | |
1073 | zlog_warn ("RIPng packet version %d doesn't fit to my version %d", | |
1074 | packet->version, ripng->version); | |
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | /* Process RIPng packet. */ | |
1079 | switch (packet->command) | |
1080 | { | |
1081 | case RIPNG_REQUEST: | |
1082 | ripng_request_process (packet, len, &from, ifp); | |
1083 | break; | |
1084 | case RIPNG_RESPONSE: | |
1085 | ripng_response_process (packet, len, &from, ifp, hoplimit); | |
1086 | break; | |
1087 | default: | |
1088 | zlog_warn ("Invalid RIPng command %d", packet->command); | |
1089 | break; | |
1090 | } | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | /* Walk down the RIPng routing table then clear changed flag. */ | |
1095 | void | |
1096 | ripng_clear_changed_flag () | |
1097 | { | |
1098 | struct route_node *rp; | |
1099 | struct ripng_info *rinfo; | |
1100 | ||
1101 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
1102 | if ((rinfo = rp->info) != NULL) | |
1103 | if (rinfo->flags & RIPNG_RTF_CHANGED) | |
1104 | rinfo->flags &= ~RIPNG_RTF_CHANGED; | |
1105 | } | |
1106 | ||
1107 | /* Regular update of RIPng route. Send all routing formation to RIPng | |
1108 | enabled interface. */ | |
1109 | int | |
1110 | ripng_update (struct thread *t) | |
1111 | { | |
1112 | listnode node; | |
1113 | struct interface *ifp; | |
1114 | struct ripng_interface *ri; | |
1115 | ||
1116 | /* Clear update timer thread. */ | |
1117 | ripng->t_update = NULL; | |
1118 | ||
1119 | /* Logging update event. */ | |
1120 | if (IS_RIPNG_DEBUG_EVENT) | |
1121 | zlog_info ("RIPng update timer expired!"); | |
1122 | ||
1123 | /* Supply routes to each interface. */ | |
1124 | for (node = listhead (iflist); node; nextnode (node)) | |
1125 | { | |
1126 | ifp = getdata (node); | |
1127 | ri = ifp->info; | |
1128 | ||
1129 | if (if_is_loopback (ifp) || ! if_is_up (ifp)) | |
1130 | continue; | |
1131 | ||
1132 | if (! ri->running) | |
1133 | continue; | |
1134 | ||
1135 | /* When passive interface is specified, suppress announce to the | |
1136 | interface. */ | |
1137 | if (ri->passive) | |
1138 | continue; | |
1139 | ||
1140 | #if RIPNG_ADVANCED | |
1141 | if (ri->ri_send == RIPNG_SEND_OFF) | |
1142 | { | |
1143 | if (IS_RIPNG_DEBUG_EVENT) | |
1144 | zlog (NULL, LOG_INFO, | |
1145 | "[Event] RIPng send to if %d is suppressed by config", | |
1146 | ifp->ifindex); | |
1147 | continue; | |
1148 | } | |
1149 | #endif /* RIPNG_ADVANCED */ | |
1150 | ||
1151 | ripng_output_process (ifp, NULL, ripng_all_route, ripng_split_horizon); | |
1152 | } | |
1153 | ||
1154 | /* Triggered updates may be suppressed if a regular update is due by | |
1155 | the time the triggered update would be sent. */ | |
1156 | if (ripng->t_triggered_interval) | |
1157 | { | |
1158 | thread_cancel (ripng->t_triggered_interval); | |
1159 | ripng->t_triggered_interval = NULL; | |
1160 | } | |
1161 | ripng->trigger = 0; | |
1162 | ||
1163 | /* Reset flush event. */ | |
1164 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
1165 | ||
1166 | return 0; | |
1167 | } | |
1168 | ||
1169 | /* Triggered update interval timer. */ | |
1170 | int | |
1171 | ripng_triggered_interval (struct thread *t) | |
1172 | { | |
1173 | ripng->t_triggered_interval = NULL; | |
1174 | ||
1175 | if (ripng->trigger) | |
1176 | { | |
1177 | ripng->trigger = 0; | |
1178 | ripng_triggered_update (t); | |
1179 | } | |
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | /* Execute triggered update. */ | |
1184 | int | |
1185 | ripng_triggered_update (struct thread *t) | |
1186 | { | |
1187 | listnode node; | |
1188 | struct interface *ifp; | |
1189 | struct ripng_interface *ri; | |
1190 | int interval; | |
1191 | ||
1192 | ripng->t_triggered_update = NULL; | |
1193 | ||
1194 | /* Cancel interval timer. */ | |
1195 | if (ripng->t_triggered_interval) | |
1196 | { | |
1197 | thread_cancel (ripng->t_triggered_interval); | |
1198 | ripng->t_triggered_interval = NULL; | |
1199 | } | |
1200 | ripng->trigger = 0; | |
1201 | ||
1202 | /* Logging triggered update. */ | |
1203 | if (IS_RIPNG_DEBUG_EVENT) | |
1204 | zlog_info ("RIPng triggered update!"); | |
1205 | ||
1206 | /* Split Horizon processing is done when generating triggered | |
1207 | updates as well as normal updates (see section 2.6). */ | |
1208 | for (node = listhead (iflist); node; nextnode (node)) | |
1209 | { | |
1210 | ifp = getdata (node); | |
1211 | ri = ifp->info; | |
1212 | ||
1213 | if (if_is_loopback (ifp) || ! if_is_up (ifp)) | |
1214 | continue; | |
1215 | ||
1216 | if (! ri->running) | |
1217 | continue; | |
1218 | ||
1219 | /* When passive interface is specified, suppress announce to the | |
1220 | interface. */ | |
1221 | if (ri->passive) | |
1222 | continue; | |
1223 | ||
1224 | ripng_output_process (ifp, NULL, ripng_changed_route, | |
1225 | ripng_split_horizon); | |
1226 | } | |
1227 | ||
1228 | /* Once all of the triggered updates have been generated, the route | |
1229 | change flags should be cleared. */ | |
1230 | ripng_clear_changed_flag (); | |
1231 | ||
1232 | /* After a triggered update is sent, a timer should be set for a | |
1233 | random interval between 1 and 5 seconds. If other changes that | |
1234 | would trigger updates occur before the timer expires, a single | |
1235 | update is triggered when the timer expires. */ | |
1236 | interval = (random () % 5) + 1; | |
1237 | ||
1238 | ripng->t_triggered_interval = | |
1239 | thread_add_timer (master, ripng_triggered_interval, NULL, interval); | |
1240 | ||
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | /* Write routing table entry to the stream and return next index of | |
1245 | the routing table entry in the stream. */ | |
1246 | int | |
1247 | ripng_write_rte (int num, struct stream *s, struct prefix_ipv6 *p, | |
1248 | u_int16_t tag, u_char metric) | |
1249 | { | |
1250 | /* RIPng packet header. */ | |
1251 | if (num == 0) | |
1252 | { | |
1253 | stream_putc (s, RIPNG_RESPONSE); | |
1254 | stream_putc (s, RIPNG_V1); | |
1255 | stream_putw (s, 0); | |
1256 | } | |
1257 | ||
1258 | /* Write routing table entry. */ | |
1259 | stream_write (s, (caddr_t) &p->prefix, sizeof (struct in6_addr)); | |
1260 | stream_putw (s, tag); | |
1261 | stream_putc (s, p->prefixlen); | |
1262 | stream_putc (s, metric); | |
1263 | ||
1264 | return ++num; | |
1265 | } | |
1266 | ||
1267 | /* Send RESPONSE message to specified destination. */ | |
1268 | void | |
1269 | ripng_output_process (struct interface *ifp, struct sockaddr_in6 *to, | |
1270 | int route_type, int split_horizon) | |
1271 | { | |
1272 | int ret; | |
1273 | struct stream *s; | |
1274 | struct route_node *rp; | |
1275 | struct ripng_info *rinfo; | |
1276 | struct ripng_interface *ri; | |
1277 | struct ripng_aggregate *aggregate; | |
1278 | struct prefix_ipv6 *p; | |
1279 | int num; | |
1280 | int mtu; | |
1281 | int rtemax; | |
1282 | u_char metric; | |
1283 | u_char metric_set; | |
1284 | ||
1285 | if (IS_RIPNG_DEBUG_EVENT) | |
1286 | zlog_info ("RIPng update routes on interface %s", ifp->name); | |
1287 | ||
1288 | /* Output stream get from ripng structre. XXX this should be | |
1289 | interface structure. */ | |
1290 | s = ripng->obuf; | |
1291 | ||
1292 | /* Reset stream and RTE counter. */ | |
1293 | stream_reset (s); | |
1294 | num = 0; | |
1295 | ||
1296 | mtu = ifp->mtu; | |
1297 | if (mtu < 0) | |
1298 | mtu = IFMINMTU; | |
1299 | ||
1300 | rtemax = (min (mtu, RIPNG_MAX_PACKET_SIZE) - | |
1301 | IPV6_HDRLEN - | |
1302 | sizeof (struct udphdr) - | |
1303 | sizeof (struct ripng_packet) + | |
1304 | sizeof (struct rte)) / sizeof (struct rte); | |
1305 | ||
1306 | #ifdef DEBUG | |
1307 | zlog_info ("DEBUG RIPng: ifmtu is %d", ifp->mtu); | |
1308 | zlog_info ("DEBUG RIPng: rtemax is %d", rtemax); | |
1309 | #endif /* DEBUG */ | |
1310 | ||
1311 | /* Get RIPng interface. */ | |
1312 | ri = ifp->info; | |
1313 | ||
1314 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
1315 | { | |
1316 | if ((rinfo = rp->info) != NULL && rinfo->suppress == 0) | |
1317 | { | |
1318 | p = (struct prefix_ipv6 *) &rp->p; | |
1319 | metric = rinfo->metric; | |
1320 | ||
1321 | /* Changed route only output. */ | |
1322 | if (route_type == ripng_changed_route && | |
1323 | (! (rinfo->flags & RIPNG_RTF_CHANGED))) | |
1324 | continue; | |
1325 | ||
1326 | /* Split horizon. */ | |
1327 | if (split_horizon == ripng_split_horizon && | |
1328 | rinfo->ifindex == ifp->ifindex) | |
1329 | continue; | |
1330 | ||
1331 | /* Apply output filters.*/ | |
1332 | if (ri->list[RIPNG_FILTER_OUT]) | |
1333 | { | |
1334 | if (access_list_apply (ri->list[RIPNG_FILTER_OUT], | |
1335 | (struct prefix *) p) == FILTER_DENY) | |
1336 | { | |
1337 | if (IS_RIPNG_DEBUG_PACKET) | |
1338 | zlog_info ("RIPng %s/%d is filtered by distribute out", | |
1339 | inet6_ntop (&p->prefix), p->prefixlen); | |
1340 | continue; | |
1341 | } | |
1342 | } | |
1343 | if (ri->prefix[RIPNG_FILTER_OUT]) | |
1344 | { | |
1345 | if (prefix_list_apply (ri->prefix[RIPNG_FILTER_OUT], | |
1346 | (struct prefix *) p) == PREFIX_DENY) | |
1347 | { | |
1348 | if (IS_RIPNG_DEBUG_PACKET) | |
1349 | zlog_info ("RIPng %s/%d is filtered by prefix-list out", | |
1350 | inet6_ntop (&p->prefix), p->prefixlen); | |
1351 | continue; | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | /* Preparation for route-map. */ | |
1356 | metric_set = 0; | |
1357 | ||
1358 | /* Route-map */ | |
1359 | if (ri->routemap[RIPNG_FILTER_OUT]) | |
1360 | { | |
1361 | int ret; | |
1362 | struct ripng_info newinfo; | |
1363 | ||
1364 | memset (&newinfo, 0, sizeof (struct ripng_info)); | |
1365 | newinfo.metric = metric; | |
1366 | ||
1367 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT], | |
1368 | (struct prefix *) p, RMAP_RIPNG, | |
1369 | &newinfo); | |
1370 | ||
1371 | if (ret == RMAP_DENYMATCH) | |
1372 | { | |
1373 | if (IS_RIPNG_DEBUG_PACKET) | |
1374 | zlog_info ("RIPng %s/%d is filtered by route-map out", | |
1375 | inet6_ntop (&p->prefix), p->prefixlen); | |
1376 | return; | |
1377 | } | |
1378 | ||
1379 | metric = newinfo.metric; | |
1380 | metric_set = newinfo.metric_set; | |
1381 | } | |
1382 | ||
1383 | /* When the interface route-map does not set metric */ | |
1384 | if (! metric_set) | |
1385 | { | |
1386 | /* and the redistribute route-map is set. */ | |
1387 | if (ripng->route_map[rinfo->type].name) | |
1388 | { | |
1389 | int ret; | |
1390 | struct ripng_info newinfo; | |
1391 | ||
1392 | memset (&newinfo, 0, sizeof (struct ripng_info)); | |
1393 | newinfo.metric = metric; | |
1394 | ||
1395 | ret = route_map_apply (ripng->route_map[rinfo->type].map, | |
1396 | (struct prefix *) p, RMAP_RIPNG, | |
1397 | &newinfo); | |
1398 | ||
1399 | if (ret == RMAP_DENYMATCH) | |
1400 | { | |
1401 | if (IS_RIPNG_DEBUG_PACKET) | |
1402 | zlog_info ("RIPng %s/%d is filtered by route-map", | |
1403 | inet6_ntop (&p->prefix), p->prefixlen); | |
1404 | continue; | |
1405 | } | |
1406 | ||
1407 | metric = newinfo.metric; | |
1408 | metric_set = newinfo.metric_set; | |
1409 | } | |
1410 | ||
1411 | /* When the redistribute route-map does not set metric. */ | |
1412 | if (! metric_set) | |
1413 | { | |
1414 | /* If the redistribute metric is set. */ | |
1415 | if (ripng->route_map[rinfo->type].metric_config | |
1416 | && rinfo->metric != RIPNG_METRIC_INFINITY) | |
1417 | { | |
1418 | metric = ripng->route_map[rinfo->type].metric; | |
1419 | } | |
1420 | else | |
1421 | { | |
1422 | /* If the route is not connected or localy generated | |
1423 | one, use default-metric value */ | |
1424 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
1425 | && rinfo->type != ZEBRA_ROUTE_CONNECT | |
1426 | && rinfo->metric != RIPNG_METRIC_INFINITY) | |
1427 | metric = ripng->default_metric; | |
1428 | } | |
1429 | } | |
1430 | } | |
1431 | ||
1432 | /* Write RTE to the stream. */ | |
1433 | num = ripng_write_rte (num, s, p, rinfo->tag, metric); | |
1434 | if (num == rtemax) | |
1435 | { | |
1436 | ret = ripng_send_packet (STREAM_DATA (s), stream_get_endp (s), | |
1437 | to, ifp); | |
1438 | ||
1439 | if (ret >= 0 && IS_RIPNG_DEBUG_SEND) | |
1440 | ripng_packet_dump ((struct ripng_packet *)STREAM_DATA (s), | |
1441 | stream_get_endp(s), "SEND"); | |
1442 | num = 0; | |
1443 | stream_reset (s); | |
1444 | } | |
1445 | } | |
1446 | if ((aggregate = rp->aggregate) != NULL && | |
1447 | aggregate->count > 0 && | |
1448 | aggregate->suppress == 0) | |
1449 | { | |
1450 | p = (struct prefix_ipv6 *) &rp->p; | |
1451 | metric = aggregate->metric; | |
1452 | ||
1453 | /* Apply output filters.*/ | |
1454 | if (ri->list[RIPNG_FILTER_OUT]) | |
1455 | { | |
1456 | if (access_list_apply (ri->list[RIPNG_FILTER_OUT], | |
1457 | (struct prefix *) p) == FILTER_DENY) | |
1458 | { | |
1459 | if (IS_RIPNG_DEBUG_PACKET) | |
1460 | zlog_info ("RIPng %s/%d is filtered by distribute out", | |
1461 | inet6_ntop (&p->prefix), p->prefixlen); | |
1462 | continue; | |
1463 | } | |
1464 | } | |
1465 | if (ri->prefix[RIPNG_FILTER_OUT]) | |
1466 | { | |
1467 | if (prefix_list_apply (ri->prefix[RIPNG_FILTER_OUT], | |
1468 | (struct prefix *) p) == PREFIX_DENY) | |
1469 | { | |
1470 | if (IS_RIPNG_DEBUG_PACKET) | |
1471 | zlog_info ("RIPng %s/%d is filtered by prefix-list out", | |
1472 | inet6_ntop (&p->prefix), p->prefixlen); | |
1473 | continue; | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | /* Route-map */ | |
1478 | if (ri->routemap[RIPNG_FILTER_OUT]) | |
1479 | { | |
1480 | int ret; | |
1481 | struct ripng_info newinfo; | |
1482 | ||
1483 | memset (&newinfo, 0, sizeof (struct ripng_info)); | |
1484 | newinfo.metric = metric; | |
1485 | ||
1486 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT], | |
1487 | (struct prefix *) p, RMAP_RIPNG, | |
1488 | &newinfo); | |
1489 | ||
1490 | if (ret == RMAP_DENYMATCH) | |
1491 | { | |
1492 | if (IS_RIPNG_DEBUG_PACKET) | |
1493 | zlog_info ("RIPng %s/%d is filtered by route-map out", | |
1494 | inet6_ntop (&p->prefix), p->prefixlen); | |
1495 | return; | |
1496 | } | |
1497 | ||
1498 | metric = newinfo.metric; | |
1499 | } | |
1500 | ||
1501 | /* Changed route only output. */ | |
1502 | if (route_type == ripng_changed_route) | |
1503 | continue; | |
1504 | ||
1505 | /* Write RTE to the stream. */ | |
1506 | num = ripng_write_rte (num, s, p, aggregate->tag, metric); | |
1507 | if (num == rtemax) | |
1508 | { | |
1509 | ret = ripng_send_packet (STREAM_DATA (s), stream_get_endp (s), | |
1510 | to, ifp); | |
1511 | ||
1512 | if (ret >= 0 && IS_RIPNG_DEBUG_SEND) | |
1513 | ripng_packet_dump ((struct ripng_packet *)STREAM_DATA (s), | |
1514 | stream_get_endp(s), "SEND"); | |
1515 | num = 0; | |
1516 | stream_reset (s); | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | } | |
1521 | ||
1522 | /* If unwritten RTE exist, flush it. */ | |
1523 | if (num != 0) | |
1524 | { | |
1525 | ret = ripng_send_packet (STREAM_DATA (s), stream_get_endp (s), | |
1526 | to, ifp); | |
1527 | ||
1528 | if (ret >= 0 && IS_RIPNG_DEBUG_SEND) | |
1529 | ripng_packet_dump ((struct ripng_packet *)STREAM_DATA (s), | |
1530 | stream_get_endp (s), "SEND"); | |
1531 | num = 0; | |
1532 | stream_reset (s); | |
1533 | } | |
1534 | } | |
1535 | ||
1536 | /* Create new RIPng instance and set it to global variable. */ | |
1537 | int | |
1538 | ripng_create () | |
1539 | { | |
1540 | /* ripng should be NULL. */ | |
1541 | assert (ripng == NULL); | |
1542 | ||
1543 | /* Allocaste RIPng instance. */ | |
1544 | ripng = XMALLOC (0, sizeof (struct ripng)); | |
1545 | memset (ripng, 0, sizeof (struct ripng)); | |
1546 | ||
1547 | /* Default version and timer values. */ | |
1548 | ripng->version = RIPNG_V1; | |
1549 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
1550 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
1551 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
1552 | ripng->default_metric = RIPNG_DEFAULT_METRIC_DEFAULT; | |
1553 | ||
1554 | /* Make buffer. */ | |
1555 | ripng->ibuf = stream_new (RIPNG_MAX_PACKET_SIZE * 5); | |
1556 | ripng->obuf = stream_new (RIPNG_MAX_PACKET_SIZE); | |
1557 | ||
1558 | /* Initialize RIPng routig table. */ | |
1559 | ripng->table = route_table_init (); | |
1560 | ripng->route = route_table_init (); | |
1561 | ripng->aggregate = route_table_init (); | |
1562 | ||
1563 | /* Make socket. */ | |
1564 | ripng->sock = ripng_make_socket (); | |
1565 | if (ripng->sock < 0) | |
1566 | return ripng->sock; | |
1567 | ||
1568 | /* Threads. */ | |
1569 | ripng_event (RIPNG_READ, ripng->sock); | |
1570 | ripng_event (RIPNG_UPDATE_EVENT, 1); | |
1571 | ||
1572 | return 0; | |
1573 | } | |
1574 | ||
1575 | /* Sned RIPng request to the interface. */ | |
1576 | int | |
1577 | ripng_request (struct interface *ifp) | |
1578 | { | |
1579 | struct rte *rte; | |
1580 | struct ripng_packet ripng_packet; | |
1581 | ||
1582 | if (IS_RIPNG_DEBUG_EVENT) | |
1583 | zlog_info ("RIPng send request to %s", ifp->name); | |
1584 | ||
1585 | memset (&ripng_packet, 0, sizeof (ripng_packet)); | |
1586 | ripng_packet.command = RIPNG_REQUEST; | |
1587 | ripng_packet.version = RIPNG_V1; | |
1588 | rte = ripng_packet.rte; | |
1589 | rte->metric = RIPNG_METRIC_INFINITY; | |
1590 | ||
1591 | return ripng_send_packet ((caddr_t) &ripng_packet, sizeof (ripng_packet), | |
1592 | NULL, ifp); | |
1593 | } | |
1594 | ||
1595 | /* Clean up installed RIPng routes. */ | |
1596 | void | |
1597 | ripng_terminate () | |
1598 | { | |
1599 | struct route_node *rp; | |
1600 | struct ripng_info *rinfo; | |
1601 | ||
1602 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
1603 | if ((rinfo = rp->info) != NULL) | |
1604 | { | |
1605 | if (rinfo->type == ZEBRA_ROUTE_RIPNG && | |
1606 | rinfo->sub_type == RIPNG_ROUTE_RTE) | |
1607 | ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, | |
1608 | &rinfo->nexthop, rinfo->ifindex); | |
1609 | } | |
1610 | } | |
1611 | \f | |
1612 | int | |
1613 | ripng_update_jitter (int time) | |
1614 | { | |
1615 | return ((rand () % (time + 1)) - (time / 2)); | |
1616 | } | |
1617 | ||
1618 | void | |
1619 | ripng_event (enum ripng_event event, int sock) | |
1620 | { | |
1621 | int ripng_request_all (struct thread *); | |
1622 | int jitter = 0; | |
1623 | ||
1624 | switch (event) | |
1625 | { | |
1626 | case RIPNG_READ: | |
1627 | if (!ripng->t_read) | |
1628 | ripng->t_read = thread_add_read (master, ripng_read, NULL, sock); | |
1629 | break; | |
1630 | case RIPNG_UPDATE_EVENT: | |
1631 | if (ripng->t_update) | |
1632 | { | |
1633 | thread_cancel (ripng->t_update); | |
1634 | ripng->t_update = NULL; | |
1635 | } | |
1636 | /* Update timer jitter. */ | |
1637 | jitter = ripng_update_jitter (ripng->update_time); | |
1638 | ||
1639 | ripng->t_update = | |
1640 | thread_add_timer (master, ripng_update, NULL, | |
1641 | sock ? 2 : ripng->update_time + jitter); | |
1642 | break; | |
1643 | case RIPNG_TRIGGERED_UPDATE: | |
1644 | if (ripng->t_triggered_interval) | |
1645 | ripng->trigger = 1; | |
1646 | else if (! ripng->t_triggered_update) | |
1647 | ripng->t_triggered_update = | |
1648 | thread_add_event (master, ripng_triggered_update, NULL, 0); | |
1649 | break; | |
1650 | default: | |
1651 | break; | |
1652 | } | |
1653 | } | |
1654 | \f | |
1655 | /* Each route type's strings and default preference. */ | |
1656 | struct | |
1657 | { | |
1658 | int key; | |
1659 | char *str; | |
1660 | char *str_long; | |
1661 | int distance; | |
1662 | } route_info[] = | |
1663 | { | |
1664 | { ZEBRA_ROUTE_SYSTEM, "X", "system", 10}, | |
1665 | { ZEBRA_ROUTE_KERNEL, "K", "kernel", 20}, | |
1666 | { ZEBRA_ROUTE_CONNECT, "C", "connected", 30}, | |
1667 | { ZEBRA_ROUTE_STATIC, "S", "static", 40}, | |
1668 | { ZEBRA_ROUTE_RIP, "R", "rip", 50}, | |
1669 | { ZEBRA_ROUTE_RIPNG, "R", "ripng", 50}, | |
1670 | { ZEBRA_ROUTE_OSPF, "O", "ospf", 60}, | |
1671 | { ZEBRA_ROUTE_OSPF6, "O", "ospf6", 60}, | |
1672 | { ZEBRA_ROUTE_BGP, "B", "bgp", 70}, | |
1673 | }; | |
1674 | ||
1675 | /* For messages. */ | |
1676 | struct message ripng_route_info[] = | |
1677 | { | |
1678 | { RIPNG_ROUTE_RTE, " "}, | |
1679 | { RIPNG_ROUTE_STATIC, "S"}, | |
1680 | { RIPNG_ROUTE_AGGREGATE, "a"} | |
1681 | }; | |
1682 | ||
1683 | /* Print out routes update time. */ | |
1684 | static void | |
1685 | ripng_vty_out_uptime (struct vty *vty, struct ripng_info *rinfo) | |
1686 | { | |
1687 | struct timeval timer_now; | |
1688 | time_t clock; | |
1689 | struct tm *tm; | |
1690 | #define TIME_BUF 25 | |
1691 | char timebuf [TIME_BUF]; | |
1692 | struct thread *thread; | |
1693 | ||
1694 | gettimeofday (&timer_now, NULL); | |
1695 | ||
1696 | if ((thread = rinfo->t_timeout) != NULL) | |
1697 | { | |
1698 | clock = thread->u.sands.tv_sec - timer_now.tv_sec; | |
1699 | tm = gmtime (&clock); | |
1700 | strftime (timebuf, TIME_BUF, "%M:%S", tm); | |
1701 | vty_out (vty, "%5s", timebuf); | |
1702 | } | |
1703 | else if ((thread = rinfo->t_garbage_collect) != NULL) | |
1704 | { | |
1705 | clock = thread->u.sands.tv_sec - timer_now.tv_sec; | |
1706 | tm = gmtime (&clock); | |
1707 | strftime (timebuf, TIME_BUF, "%M:%S", tm); | |
1708 | vty_out (vty, "%5s", timebuf); | |
1709 | } | |
1710 | } | |
1711 | ||
1712 | DEFUN (show_ipv6_ripng, | |
1713 | show_ipv6_ripng_cmd, | |
1714 | "show ipv6 ripng", | |
1715 | SHOW_STR | |
1716 | IP_STR | |
1717 | "Show RIPng routes\n") | |
1718 | { | |
1719 | struct route_node *rp; | |
1720 | struct ripng_info *rinfo; | |
1721 | struct ripng_aggregate *aggregate; | |
1722 | struct prefix_ipv6 *p; | |
1723 | int len; | |
1724 | ||
1725 | /* Header of display. */ | |
1726 | vty_out (vty, "%sCodes: R - RIPng%s%s" | |
1727 | " Network " | |
1728 | "Next Hop If Met Tag Time%s", VTY_NEWLINE, | |
1729 | VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE); | |
1730 | ||
1731 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
1732 | { | |
1733 | if ((aggregate = rp->aggregate) != NULL) | |
1734 | { | |
1735 | p = (struct prefix_ipv6 *) &rp->p; | |
1736 | ||
1737 | #ifdef DEBUG | |
1738 | len = vty_out (vty, "Ra %d/%d %s/%d ", | |
1739 | aggregate->count, aggregate->suppress, | |
1740 | inet6_ntop (&p->prefix), p->prefixlen); | |
1741 | #else | |
1742 | len = vty_out (vty, "Ra %s/%d ", | |
1743 | inet6_ntop (&p->prefix), p->prefixlen); | |
1744 | #endif /* DEBUG */ | |
1745 | ||
1746 | len = 37 - len; | |
1747 | if (len > 0) | |
1748 | vty_out (vty, "%*s", len, " "); | |
1749 | ||
1750 | vty_out (vty, "%*s", 26, " "); | |
1751 | vty_out (vty, "%4d %3d%s", aggregate->metric, | |
1752 | aggregate->tag, | |
1753 | VTY_NEWLINE); | |
1754 | } | |
1755 | ||
1756 | if ((rinfo = rp->info) != NULL) | |
1757 | { | |
1758 | p = (struct prefix_ipv6 *) &rp->p; | |
1759 | ||
1760 | #ifdef DEBUG | |
1761 | len = vty_out (vty, "%s%s 0/%d %s/%d ", | |
1762 | route_info[rinfo->type].str, | |
1763 | rinfo->suppress ? "s" : " ", | |
1764 | rinfo->suppress, | |
1765 | inet6_ntop (&p->prefix), p->prefixlen); | |
1766 | #else | |
1767 | len = vty_out (vty, "%s%s %s/%d ", | |
1768 | route_info[rinfo->type].str, | |
1769 | rinfo->suppress ? "s" : " ", | |
1770 | inet6_ntop (&p->prefix), p->prefixlen); | |
1771 | #endif /* DEBUG */ | |
1772 | len = 37 - len; | |
1773 | if (len > 0) | |
1774 | vty_out (vty, "%*s", len, " "); | |
1775 | ||
1776 | len = vty_out (vty, "%s", inet6_ntop (&rinfo->nexthop)); | |
1777 | ||
1778 | len = 26 - len; | |
1779 | if (len > 0) | |
1780 | vty_out (vty, "%*s", len, " "); | |
1781 | ||
1782 | vty_out (vty, "%2d %2d %3d ", | |
1783 | rinfo->ifindex, rinfo->metric, rinfo->tag); | |
1784 | ||
1785 | if (rinfo->sub_type == RIPNG_ROUTE_RTE) | |
1786 | ripng_vty_out_uptime (vty, rinfo); | |
1787 | ||
1788 | vty_out (vty, "%s", VTY_NEWLINE); | |
1789 | } | |
1790 | } | |
1791 | ||
1792 | return CMD_SUCCESS; | |
1793 | } | |
1794 | ||
1795 | DEFUN (router_ripng, | |
1796 | router_ripng_cmd, | |
1797 | "router ripng", | |
1798 | "Enable a routing process\n" | |
1799 | "Make RIPng instance command\n") | |
1800 | { | |
1801 | int ret; | |
1802 | ||
1803 | vty->node = RIPNG_NODE; | |
1804 | ||
1805 | if (!ripng) | |
1806 | { | |
1807 | ret = ripng_create (); | |
1808 | ||
1809 | /* Notice to user we couldn't create RIPng. */ | |
1810 | if (ret < 0) | |
1811 | { | |
1812 | zlog_warn ("can't create RIPng"); | |
1813 | return CMD_WARNING; | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | return CMD_SUCCESS; | |
1818 | } | |
1819 | ||
1820 | DEFUN (ripng_route, | |
1821 | ripng_route_cmd, | |
1822 | "route IPV6ADDR", | |
1823 | "Static route setup\n" | |
1824 | "Set static RIPng route announcement\n") | |
1825 | { | |
1826 | int ret; | |
1827 | struct prefix_ipv6 p; | |
1828 | struct route_node *rp; | |
1829 | ||
1830 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
1831 | if (ret <= 0) | |
1832 | { | |
1833 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
1834 | return CMD_WARNING; | |
1835 | } | |
1836 | apply_mask_ipv6 (&p); | |
1837 | ||
1838 | rp = route_node_get (ripng->route, (struct prefix *) &p); | |
1839 | if (rp->info) | |
1840 | { | |
1841 | vty_out (vty, "There is already same static route.%s", VTY_NEWLINE); | |
1842 | route_unlock_node (rp); | |
1843 | return CMD_WARNING; | |
1844 | } | |
1845 | rp->info = (void *)1; | |
1846 | ||
1847 | ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); | |
1848 | ||
1849 | return CMD_SUCCESS; | |
1850 | } | |
1851 | ||
1852 | DEFUN (no_ripng_route, | |
1853 | no_ripng_route_cmd, | |
1854 | "no route IPV6ADDR", | |
1855 | NO_STR | |
1856 | "Static route setup\n" | |
1857 | "Delete static RIPng route announcement\n") | |
1858 | { | |
1859 | int ret; | |
1860 | struct prefix_ipv6 p; | |
1861 | struct route_node *rp; | |
1862 | ||
1863 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
1864 | if (ret <= 0) | |
1865 | { | |
1866 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
1867 | return CMD_WARNING; | |
1868 | } | |
1869 | apply_mask_ipv6 (&p); | |
1870 | ||
1871 | rp = route_node_lookup (ripng->route, (struct prefix *) &p); | |
1872 | if (! rp) | |
1873 | { | |
1874 | vty_out (vty, "Can't find static route.%s", VTY_NEWLINE); | |
1875 | return CMD_WARNING; | |
1876 | } | |
1877 | ||
1878 | ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); | |
1879 | route_unlock_node (rp); | |
1880 | ||
1881 | rp->info = NULL; | |
1882 | route_unlock_node (rp); | |
1883 | ||
1884 | return CMD_SUCCESS; | |
1885 | } | |
1886 | ||
1887 | DEFUN (ripng_aggregate_address, | |
1888 | ripng_aggregate_address_cmd, | |
1889 | "aggregate-address X:X::X:X/M", | |
1890 | "Set aggregate RIPng route announcement\n" | |
1891 | "Aggregate network\n") | |
1892 | { | |
1893 | int ret; | |
1894 | struct prefix p; | |
1895 | struct route_node *node; | |
1896 | ||
1897 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
1898 | if (ret <= 0) | |
1899 | { | |
1900 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
1901 | return CMD_WARNING; | |
1902 | } | |
1903 | ||
1904 | /* Check aggregate alredy exist or not. */ | |
1905 | node = route_node_get (ripng->aggregate, &p); | |
1906 | if (node->info) | |
1907 | { | |
1908 | vty_out (vty, "There is already same aggregate route.%s", VTY_NEWLINE); | |
1909 | route_unlock_node (node); | |
1910 | return CMD_WARNING; | |
1911 | } | |
1912 | node->info = (void *)1; | |
1913 | ||
1914 | ripng_aggregate_add (&p); | |
1915 | ||
1916 | return CMD_SUCCESS; | |
1917 | } | |
1918 | ||
1919 | DEFUN (no_ripng_aggregate_address, | |
1920 | no_ripng_aggregate_address_cmd, | |
1921 | "no aggregate-address X:X::X:X/M", | |
1922 | NO_STR | |
1923 | "Delete aggregate RIPng route announcement\n" | |
1924 | "Aggregate network") | |
1925 | { | |
1926 | int ret; | |
1927 | struct prefix p; | |
1928 | struct route_node *rn; | |
1929 | ||
1930 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *) &p); | |
1931 | if (ret <= 0) | |
1932 | { | |
1933 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
1934 | return CMD_WARNING; | |
1935 | } | |
1936 | ||
1937 | rn = route_node_lookup (ripng->aggregate, &p); | |
1938 | if (! rn) | |
1939 | { | |
1940 | vty_out (vty, "Can't find aggregate route.%s", VTY_NEWLINE); | |
1941 | return CMD_WARNING; | |
1942 | } | |
1943 | route_unlock_node (rn); | |
1944 | rn->info = NULL; | |
1945 | route_unlock_node (rn); | |
1946 | ||
1947 | ripng_aggregate_delete (&p); | |
1948 | ||
1949 | return CMD_SUCCESS; | |
1950 | } | |
1951 | ||
1952 | DEFUN (ripng_default_metric, | |
1953 | ripng_default_metric_cmd, | |
1954 | "default-metric <1-16>", | |
1955 | "Set a metric of redistribute routes\n" | |
1956 | "Default metric\n") | |
1957 | { | |
1958 | if (ripng) | |
1959 | { | |
1960 | ripng->default_metric = atoi (argv[0]); | |
1961 | } | |
1962 | return CMD_SUCCESS; | |
1963 | } | |
1964 | ||
1965 | DEFUN (no_ripng_default_metric, | |
1966 | no_ripng_default_metric_cmd, | |
1967 | "no default-metric", | |
1968 | NO_STR | |
1969 | "Set a metric of redistribute routes\n" | |
1970 | "Default metric\n") | |
1971 | { | |
1972 | if (ripng) | |
1973 | { | |
1974 | ripng->default_metric = RIPNG_DEFAULT_METRIC_DEFAULT; | |
1975 | } | |
1976 | return CMD_SUCCESS; | |
1977 | } | |
1978 | ||
1979 | ALIAS (no_ripng_default_metric, | |
1980 | no_ripng_default_metric_val_cmd, | |
1981 | "no default-metric <1-16>", | |
1982 | NO_STR | |
1983 | "Set a metric of redistribute routes\n" | |
1984 | "Default metric\n") | |
1985 | ||
1986 | #if 0 | |
1987 | /* RIPng update timer setup. */ | |
1988 | DEFUN (ripng_update_timer, | |
1989 | ripng_update_timer_cmd, | |
1990 | "update-timer SECOND", | |
1991 | "Set RIPng update timer in seconds\n" | |
1992 | "Seconds\n") | |
1993 | { | |
1994 | unsigned long update; | |
1995 | char *endptr = NULL; | |
1996 | ||
1997 | update = strtoul (argv[0], &endptr, 10); | |
1998 | if (update == ULONG_MAX || *endptr != '\0') | |
1999 | { | |
2000 | vty_out (vty, "update timer value error%s", VTY_NEWLINE); | |
2001 | return CMD_WARNING; | |
2002 | } | |
2003 | ||
2004 | ripng->update_time = update; | |
2005 | ||
2006 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2007 | return CMD_SUCCESS; | |
2008 | } | |
2009 | ||
2010 | DEFUN (no_ripng_update_timer, | |
2011 | no_ripng_update_timer_cmd, | |
2012 | "no update-timer SECOND", | |
2013 | NO_STR | |
2014 | "Unset RIPng update timer in seconds\n" | |
2015 | "Seconds\n") | |
2016 | { | |
2017 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2018 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2019 | return CMD_SUCCESS; | |
2020 | } | |
2021 | ||
2022 | /* RIPng timeout timer setup. */ | |
2023 | DEFUN (ripng_timeout_timer, | |
2024 | ripng_timeout_timer_cmd, | |
2025 | "timeout-timer SECOND", | |
2026 | "Set RIPng timeout timer in seconds\n" | |
2027 | "Seconds\n") | |
2028 | { | |
2029 | unsigned long timeout; | |
2030 | char *endptr = NULL; | |
2031 | ||
2032 | timeout = strtoul (argv[0], &endptr, 10); | |
2033 | if (timeout == ULONG_MAX || *endptr != '\0') | |
2034 | { | |
2035 | vty_out (vty, "timeout timer value error%s", VTY_NEWLINE); | |
2036 | return CMD_WARNING; | |
2037 | } | |
2038 | ||
2039 | ripng->timeout_time = timeout; | |
2040 | ||
2041 | return CMD_SUCCESS; | |
2042 | } | |
2043 | ||
2044 | DEFUN (no_ripng_timeout_timer, | |
2045 | no_ripng_timeout_timer_cmd, | |
2046 | "no timeout-timer SECOND", | |
2047 | NO_STR | |
2048 | "Unset RIPng timeout timer in seconds\n" | |
2049 | "Seconds\n") | |
2050 | { | |
2051 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2052 | return CMD_SUCCESS; | |
2053 | } | |
2054 | ||
2055 | /* RIPng garbage timer setup. */ | |
2056 | DEFUN (ripng_garbage_timer, | |
2057 | ripng_garbage_timer_cmd, | |
2058 | "garbage-timer SECOND", | |
2059 | "Set RIPng garbage timer in seconds\n" | |
2060 | "Seconds\n") | |
2061 | { | |
2062 | unsigned long garbage; | |
2063 | char *endptr = NULL; | |
2064 | ||
2065 | garbage = strtoul (argv[0], &endptr, 10); | |
2066 | if (garbage == ULONG_MAX || *endptr != '\0') | |
2067 | { | |
2068 | vty_out (vty, "garbage timer value error%s", VTY_NEWLINE); | |
2069 | return CMD_WARNING; | |
2070 | } | |
2071 | ||
2072 | ripng->garbage_time = garbage; | |
2073 | ||
2074 | return CMD_SUCCESS; | |
2075 | } | |
2076 | ||
2077 | DEFUN (no_ripng_garbage_timer, | |
2078 | no_ripng_garbage_timer_cmd, | |
2079 | "no garbage-timer SECOND", | |
2080 | NO_STR | |
2081 | "Unset RIPng garbage timer in seconds\n" | |
2082 | "Seconds\n") | |
2083 | { | |
2084 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2085 | return CMD_SUCCESS; | |
2086 | } | |
2087 | #endif /* 0 */ | |
2088 | ||
2089 | DEFUN (ripng_timers, | |
2090 | ripng_timers_cmd, | |
2091 | "timers basic <0-65535> <0-65535> <0-65535>", | |
2092 | "RIPng timers setup\n" | |
2093 | "Basic timer\n" | |
2094 | "Routing table update timer value in second. Default is 30.\n" | |
2095 | "Routing information timeout timer. Default is 180.\n" | |
2096 | "Garbage collection timer. Default is 120.\n") | |
2097 | { | |
2098 | unsigned long update; | |
2099 | unsigned long timeout; | |
2100 | unsigned long garbage; | |
2101 | char *endptr = NULL; | |
2102 | ||
2103 | update = strtoul (argv[0], &endptr, 10); | |
2104 | if (update == ULONG_MAX || *endptr != '\0') | |
2105 | { | |
2106 | vty_out (vty, "update timer value error%s", VTY_NEWLINE); | |
2107 | return CMD_WARNING; | |
2108 | } | |
2109 | ||
2110 | timeout = strtoul (argv[1], &endptr, 10); | |
2111 | if (timeout == ULONG_MAX || *endptr != '\0') | |
2112 | { | |
2113 | vty_out (vty, "timeout timer value error%s", VTY_NEWLINE); | |
2114 | return CMD_WARNING; | |
2115 | } | |
2116 | ||
2117 | garbage = strtoul (argv[2], &endptr, 10); | |
2118 | if (garbage == ULONG_MAX || *endptr != '\0') | |
2119 | { | |
2120 | vty_out (vty, "garbage timer value error%s", VTY_NEWLINE); | |
2121 | return CMD_WARNING; | |
2122 | } | |
2123 | ||
2124 | /* Set each timer value. */ | |
2125 | ripng->update_time = update; | |
2126 | ripng->timeout_time = timeout; | |
2127 | ripng->garbage_time = garbage; | |
2128 | ||
2129 | /* Reset update timer thread. */ | |
2130 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2131 | ||
2132 | return CMD_SUCCESS; | |
2133 | } | |
2134 | ||
2135 | DEFUN (no_ripng_timers, | |
2136 | no_ripng_timers_cmd, | |
2137 | "no timers basic", | |
2138 | NO_STR | |
2139 | "RIPng timers setup\n" | |
2140 | "Basic timer\n") | |
2141 | { | |
2142 | /* Set each timer value to the default. */ | |
2143 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2144 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2145 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2146 | ||
2147 | /* Reset update timer thread. */ | |
2148 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2149 | ||
2150 | return CMD_SUCCESS; | |
2151 | } | |
2152 | ||
2153 | ||
2154 | DEFUN (show_ipv6_protocols, show_ipv6_protocols_cmd, | |
2155 | "show ipv6 protocols", | |
2156 | SHOW_STR | |
2157 | IP_STR | |
2158 | "Routing protocol information") | |
2159 | { | |
2160 | if (! ripng) | |
2161 | return CMD_SUCCESS; | |
2162 | ||
2163 | vty_out (vty, "Routing Protocol is \"ripng\"%s", VTY_NEWLINE); | |
2164 | ||
2165 | vty_out (vty, "Sending updates every %ld seconds, next due in %d seconds%s", | |
2166 | ripng->update_time, 0, | |
2167 | VTY_NEWLINE); | |
2168 | ||
2169 | vty_out (vty, "Timerout after %ld seconds, garbage correct %ld%s", | |
2170 | ripng->timeout_time, | |
2171 | ripng->garbage_time, | |
2172 | VTY_NEWLINE); | |
2173 | ||
2174 | vty_out (vty, "Outgoing update filter list for all interfaces is not set"); | |
2175 | vty_out (vty, "Incoming update filter list for all interfaces is not set"); | |
2176 | ||
2177 | return CMD_SUCCESS; | |
2178 | } | |
2179 | ||
2180 | /* Please be carefull to use this command. */ | |
2181 | DEFUN (default_information_originate, | |
2182 | default_information_originate_cmd, | |
2183 | "default-information originate", | |
2184 | "Default route information\n" | |
2185 | "Distribute default route\n") | |
2186 | { | |
2187 | struct prefix_ipv6 p; | |
2188 | ||
2189 | ripng->default_information = 1; | |
2190 | ||
2191 | str2prefix_ipv6 ("::/0", &p); | |
2192 | ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); | |
2193 | ||
2194 | return CMD_SUCCESS; | |
2195 | } | |
2196 | ||
2197 | DEFUN (no_default_information_originate, | |
2198 | no_default_information_originate_cmd, | |
2199 | "no default-information originate", | |
2200 | NO_STR | |
2201 | "Default route information\n" | |
2202 | "Distribute default route\n") | |
2203 | { | |
2204 | struct prefix_ipv6 p; | |
2205 | ||
2206 | ripng->default_information = 0; | |
2207 | ||
2208 | str2prefix_ipv6 ("::/0", &p); | |
2209 | ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); | |
2210 | ||
2211 | return CMD_SUCCESS; | |
2212 | } | |
2213 | ||
2214 | /* RIPng configuration write function. */ | |
2215 | int | |
2216 | ripng_config_write (struct vty *vty) | |
2217 | { | |
2218 | int ripng_network_write (struct vty *); | |
2219 | void ripng_redistribute_write (struct vty *); | |
2220 | int write = 0; | |
2221 | struct route_node *rp; | |
2222 | ||
2223 | if (ripng) | |
2224 | { | |
2225 | ||
2226 | /* RIPng router. */ | |
2227 | vty_out (vty, "router ripng%s", VTY_NEWLINE); | |
2228 | ||
2229 | if (ripng->default_information) | |
2230 | vty_out (vty, " default-information originate%s", VTY_NEWLINE); | |
2231 | ||
2232 | ripng_network_write (vty); | |
2233 | ||
2234 | /* RIPng default metric configuration */ | |
2235 | if (ripng->default_metric != RIPNG_DEFAULT_METRIC_DEFAULT) | |
2236 | vty_out (vty, " default-metric %d%s", | |
2237 | ripng->default_metric, VTY_NEWLINE); | |
2238 | ||
2239 | ripng_redistribute_write (vty); | |
2240 | ||
2241 | /* RIPng aggregate routes. */ | |
2242 | for (rp = route_top (ripng->aggregate); rp; rp = route_next (rp)) | |
2243 | if (rp->info != NULL) | |
2244 | vty_out (vty, " aggregate-address %s/%d%s", | |
2245 | inet6_ntop (&rp->p.u.prefix6), | |
2246 | rp->p.prefixlen, | |
2247 | ||
2248 | VTY_NEWLINE); | |
2249 | ||
2250 | /* RIPng static routes. */ | |
2251 | for (rp = route_top (ripng->route); rp; rp = route_next (rp)) | |
2252 | if (rp->info != NULL) | |
2253 | vty_out (vty, " route %s/%d%s", inet6_ntop (&rp->p.u.prefix6), | |
2254 | rp->p.prefixlen, | |
2255 | VTY_NEWLINE); | |
2256 | ||
2257 | /* RIPng timers configuration. */ | |
2258 | if (ripng->update_time != RIPNG_UPDATE_TIMER_DEFAULT || | |
2259 | ripng->timeout_time != RIPNG_TIMEOUT_TIMER_DEFAULT || | |
2260 | ripng->garbage_time != RIPNG_GARBAGE_TIMER_DEFAULT) | |
2261 | { | |
2262 | vty_out (vty, " timers basic %ld %ld %ld%s", | |
2263 | ripng->update_time, | |
2264 | ripng->timeout_time, | |
2265 | ripng->garbage_time, | |
2266 | VTY_NEWLINE); | |
2267 | } | |
2268 | #if 0 | |
2269 | if (ripng->update_time != RIPNG_UPDATE_TIMER_DEFAULT) | |
2270 | vty_out (vty, " update-timer %d%s", ripng->update_time, | |
2271 | VTY_NEWLINE); | |
2272 | if (ripng->timeout_time != RIPNG_TIMEOUT_TIMER_DEFAULT) | |
2273 | vty_out (vty, " timeout-timer %d%s", ripng->timeout_time, | |
2274 | VTY_NEWLINE); | |
2275 | if (ripng->garbage_time != RIPNG_GARBAGE_TIMER_DEFAULT) | |
2276 | vty_out (vty, " garbage-timer %d%s", ripng->garbage_time, | |
2277 | VTY_NEWLINE); | |
2278 | #endif /* 0 */ | |
2279 | ||
2280 | write += config_write_distribute (vty); | |
2281 | ||
2282 | write += config_write_if_rmap (vty); | |
2283 | ||
2284 | write++; | |
2285 | } | |
2286 | return write; | |
2287 | } | |
2288 | ||
2289 | /* RIPng node structure. */ | |
2290 | struct cmd_node cmd_ripng_node = | |
2291 | { | |
2292 | RIPNG_NODE, | |
2293 | "%s(config-router)# ", | |
2294 | 1, | |
2295 | }; | |
2296 | ||
2297 | void | |
2298 | ripng_distribute_update (struct distribute *dist) | |
2299 | { | |
2300 | struct interface *ifp; | |
2301 | struct ripng_interface *ri; | |
2302 | struct access_list *alist; | |
2303 | struct prefix_list *plist; | |
2304 | ||
2305 | if (! dist->ifname) | |
2306 | return; | |
2307 | ||
2308 | ifp = if_lookup_by_name (dist->ifname); | |
2309 | if (ifp == NULL) | |
2310 | return; | |
2311 | ||
2312 | ri = ifp->info; | |
2313 | ||
2314 | if (dist->list[DISTRIBUTE_IN]) | |
2315 | { | |
2316 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]); | |
2317 | if (alist) | |
2318 | ri->list[RIPNG_FILTER_IN] = alist; | |
2319 | else | |
2320 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2321 | } | |
2322 | else | |
2323 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2324 | ||
2325 | if (dist->list[DISTRIBUTE_OUT]) | |
2326 | { | |
2327 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]); | |
2328 | if (alist) | |
2329 | ri->list[RIPNG_FILTER_OUT] = alist; | |
2330 | else | |
2331 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2332 | } | |
2333 | else | |
2334 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2335 | ||
2336 | if (dist->prefix[DISTRIBUTE_IN]) | |
2337 | { | |
2338 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]); | |
2339 | if (plist) | |
2340 | ri->prefix[RIPNG_FILTER_IN] = plist; | |
2341 | else | |
2342 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2343 | } | |
2344 | else | |
2345 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2346 | ||
2347 | if (dist->prefix[DISTRIBUTE_OUT]) | |
2348 | { | |
2349 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]); | |
2350 | if (plist) | |
2351 | ri->prefix[RIPNG_FILTER_OUT] = plist; | |
2352 | else | |
2353 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2354 | } | |
2355 | else | |
2356 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2357 | } | |
2358 | void | |
2359 | ripng_distribute_update_interface (struct interface *ifp) | |
2360 | { | |
2361 | struct distribute *dist; | |
2362 | ||
2363 | dist = distribute_lookup (ifp->name); | |
2364 | if (dist) | |
2365 | ripng_distribute_update (dist); | |
2366 | } | |
2367 | ||
2368 | /* Update all interface's distribute list. */ | |
2369 | void | |
2370 | ripng_distribute_update_all () | |
2371 | { | |
2372 | struct interface *ifp; | |
2373 | listnode node; | |
2374 | ||
2375 | for (node = listhead (iflist); node; nextnode (node)) | |
2376 | { | |
2377 | ifp = getdata (node); | |
2378 | ripng_distribute_update_interface (ifp); | |
2379 | } | |
2380 | } | |
2381 | ||
2382 | void | |
2383 | ripng_if_rmap_update (struct if_rmap *if_rmap) | |
2384 | { | |
2385 | struct interface *ifp; | |
2386 | struct ripng_interface *ri; | |
2387 | struct route_map *rmap; | |
2388 | ||
2389 | ifp = if_lookup_by_name (if_rmap->ifname); | |
2390 | if (ifp == NULL) | |
2391 | return; | |
2392 | ||
2393 | ri = ifp->info; | |
2394 | ||
2395 | if (if_rmap->routemap[IF_RMAP_IN]) | |
2396 | { | |
2397 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_IN]); | |
2398 | if (rmap) | |
2399 | ri->routemap[IF_RMAP_IN] = rmap; | |
2400 | else | |
2401 | ri->routemap[IF_RMAP_IN] = NULL; | |
2402 | } | |
2403 | else | |
2404 | ri->routemap[RIPNG_FILTER_IN] = NULL; | |
2405 | ||
2406 | if (if_rmap->routemap[IF_RMAP_OUT]) | |
2407 | { | |
2408 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_OUT]); | |
2409 | if (rmap) | |
2410 | ri->routemap[IF_RMAP_OUT] = rmap; | |
2411 | else | |
2412 | ri->routemap[IF_RMAP_OUT] = NULL; | |
2413 | } | |
2414 | else | |
2415 | ri->routemap[RIPNG_FILTER_OUT] = NULL; | |
2416 | } | |
2417 | ||
2418 | void | |
2419 | ripng_if_rmap_update_interface (struct interface *ifp) | |
2420 | { | |
2421 | struct if_rmap *if_rmap; | |
2422 | ||
2423 | if_rmap = if_rmap_lookup (ifp->name); | |
2424 | if (if_rmap) | |
2425 | ripng_if_rmap_update (if_rmap); | |
2426 | } | |
2427 | ||
2428 | void | |
2429 | ripng_routemap_update_redistribute (void) | |
2430 | { | |
2431 | int i; | |
2432 | ||
2433 | if (ripng) | |
2434 | { | |
2435 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
2436 | { | |
2437 | if (ripng->route_map[i].name) | |
2438 | ripng->route_map[i].map = | |
2439 | route_map_lookup_by_name (ripng->route_map[i].name); | |
2440 | } | |
2441 | } | |
2442 | } | |
2443 | ||
2444 | void | |
2445 | ripng_routemap_update () | |
2446 | { | |
2447 | struct interface *ifp; | |
2448 | listnode node; | |
2449 | ||
2450 | for (node = listhead (iflist); node; nextnode (node)) | |
2451 | { | |
2452 | ifp = getdata (node); | |
2453 | ripng_if_rmap_update_interface (ifp); | |
2454 | } | |
2455 | ||
2456 | ripng_routemap_update_redistribute (); | |
2457 | } | |
2458 | ||
2459 | /* Initialize ripng structure and set commands. */ | |
2460 | void | |
2461 | ripng_init () | |
2462 | { | |
2463 | /* Randomize. */ | |
2464 | srand (time (NULL)); | |
2465 | ||
2466 | /* Install RIPNG_NODE. */ | |
2467 | install_node (&cmd_ripng_node, ripng_config_write); | |
2468 | ||
2469 | /* Install ripng commands. */ | |
2470 | install_element (VIEW_NODE, &show_ipv6_ripng_cmd); | |
2471 | ||
2472 | install_element (ENABLE_NODE, &show_ipv6_ripng_cmd); | |
2473 | ||
2474 | install_element (CONFIG_NODE, &router_ripng_cmd); | |
2475 | ||
2476 | install_default (RIPNG_NODE); | |
2477 | install_element (RIPNG_NODE, &ripng_route_cmd); | |
2478 | install_element (RIPNG_NODE, &no_ripng_route_cmd); | |
2479 | install_element (RIPNG_NODE, &ripng_aggregate_address_cmd); | |
2480 | install_element (RIPNG_NODE, &no_ripng_aggregate_address_cmd); | |
2481 | ||
2482 | install_element (RIPNG_NODE, &ripng_default_metric_cmd); | |
2483 | install_element (RIPNG_NODE, &no_ripng_default_metric_cmd); | |
2484 | install_element (RIPNG_NODE, &no_ripng_default_metric_val_cmd); | |
2485 | ||
2486 | install_element (RIPNG_NODE, &ripng_timers_cmd); | |
2487 | install_element (RIPNG_NODE, &no_ripng_timers_cmd); | |
2488 | #if 0 | |
2489 | install_element (RIPNG_NODE, &ripng_update_timer_cmd); | |
2490 | install_element (RIPNG_NODE, &no_ripng_update_timer_cmd); | |
2491 | install_element (RIPNG_NODE, &ripng_timeout_timer_cmd); | |
2492 | install_element (RIPNG_NODE, &no_ripng_timeout_timer_cmd); | |
2493 | install_element (RIPNG_NODE, &ripng_garbage_timer_cmd); | |
2494 | install_element (RIPNG_NODE, &no_ripng_garbage_timer_cmd); | |
2495 | #endif /* 0 */ | |
2496 | ||
2497 | install_element (RIPNG_NODE, &default_information_originate_cmd); | |
2498 | install_element (RIPNG_NODE, &no_default_information_originate_cmd); | |
2499 | ||
2500 | ripng_if_init (); | |
2501 | ripng_debug_init (); | |
2502 | ||
2503 | /* Access list install. */ | |
2504 | access_list_init (); | |
2505 | access_list_add_hook (ripng_distribute_update_all); | |
2506 | access_list_delete_hook (ripng_distribute_update_all); | |
2507 | ||
2508 | /* Prefix list initialize.*/ | |
2509 | prefix_list_init (); | |
2510 | prefix_list_add_hook (ripng_distribute_update_all); | |
2511 | prefix_list_delete_hook (ripng_distribute_update_all); | |
2512 | ||
2513 | /* Distribute list install. */ | |
2514 | distribute_list_init (RIPNG_NODE); | |
2515 | distribute_list_add_hook (ripng_distribute_update); | |
2516 | distribute_list_delete_hook (ripng_distribute_update); | |
2517 | ||
2518 | /* Route-map for interface. */ | |
2519 | ripng_route_map_init (); | |
2520 | route_map_add_hook (ripng_routemap_update); | |
2521 | route_map_delete_hook (ripng_routemap_update); | |
2522 | ||
2523 | if_rmap_init (RIPNG_NODE); | |
2524 | if_rmap_hook_add (ripng_if_rmap_update); | |
2525 | if_rmap_hook_delete (ripng_if_rmap_update); | |
2526 | } |