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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 | ||
718e3744 | 24 | #include "prefix.h" |
25 | #include "filter.h" | |
26 | #include "log.h" | |
27 | #include "thread.h" | |
28 | #include "memory.h" | |
29 | #include "if.h" | |
30 | #include "stream.h" | |
31 | #include "table.h" | |
32 | #include "command.h" | |
33 | #include "sockopt.h" | |
34 | #include "distribute.h" | |
35 | #include "plist.h" | |
36 | #include "routemap.h" | |
0750d21f | 37 | #include "if_rmap.h" |
27d47aa7 | 38 | #include "privs.h" |
718e3744 | 39 | |
40 | #include "ripngd/ripngd.h" | |
41 | #include "ripngd/ripng_route.h" | |
42 | #include "ripngd/ripng_debug.h" | |
a94434b6 | 43 | #include "ripngd/ripng_nexthop.h" |
718e3744 | 44 | |
45 | /* RIPng structure which includes many parameters related to RIPng | |
46 | protocol. If ripng couldn't active or ripng doesn't configured, | |
47 | ripng->fd must be negative value. */ | |
48 | struct ripng *ripng = NULL; | |
49 | ||
50 | enum | |
51 | { | |
52 | ripng_all_route, | |
53 | ripng_changed_route, | |
718e3744 | 54 | }; |
55 | ||
27d47aa7 | 56 | extern struct zebra_privs_t ripngd_privs; |
57 | ||
718e3744 | 58 | /* Prototypes. */ |
59 | void | |
a94434b6 | 60 | ripng_output_process (struct interface *, struct sockaddr_in6 *, int); |
718e3744 | 61 | |
62 | int | |
63 | ripng_triggered_update (struct thread *); | |
64 | ||
65 | /* RIPng next hop specification. */ | |
66 | struct ripng_nexthop | |
67 | { | |
68 | enum ripng_nexthop_type | |
69 | { | |
70 | RIPNG_NEXTHOP_UNSPEC, | |
71 | RIPNG_NEXTHOP_ADDRESS | |
72 | } flag; | |
73 | struct in6_addr address; | |
74 | }; | |
718e3744 | 75 | |
6ac29a51 | 76 | static int |
a94434b6 | 77 | ripng_route_rte (struct ripng_info *rinfo) |
78 | { | |
79 | return (rinfo->type == ZEBRA_ROUTE_RIPNG && rinfo->sub_type == RIPNG_ROUTE_RTE); | |
80 | } | |
81 | ||
718e3744 | 82 | /* Allocate new ripng information. */ |
83 | struct ripng_info * | |
84 | ripng_info_new () | |
85 | { | |
86 | struct ripng_info *new; | |
87 | ||
88 | new = XCALLOC (MTYPE_RIPNG_ROUTE, sizeof (struct ripng_info)); | |
89 | return new; | |
90 | } | |
91 | ||
92 | /* Free ripng information. */ | |
93 | void | |
94 | ripng_info_free (struct ripng_info *rinfo) | |
95 | { | |
96 | XFREE (MTYPE_RIPNG_ROUTE, rinfo); | |
97 | } | |
98 | \f | |
718e3744 | 99 | /* Create ripng socket. */ |
6ac29a51 | 100 | static int |
718e3744 | 101 | ripng_make_socket (void) |
102 | { | |
103 | int ret; | |
104 | int sock; | |
105 | struct sockaddr_in6 ripaddr; | |
106 | ||
107 | sock = socket (AF_INET6, SOCK_DGRAM, 0); | |
108 | if (sock < 0) | |
109 | { | |
110 | zlog (NULL, LOG_ERR, "Can't make ripng socket"); | |
111 | return sock; | |
112 | } | |
113 | ||
114 | ret = setsockopt_so_recvbuf (sock, 8096); | |
115 | if (ret < 0) | |
116 | return ret; | |
117 | ret = setsockopt_ipv6_pktinfo (sock, 1); | |
118 | if (ret < 0) | |
119 | return ret; | |
120 | ret = setsockopt_ipv6_multicast_hops (sock, 255); | |
121 | if (ret < 0) | |
122 | return ret; | |
123 | ret = setsockopt_ipv6_multicast_loop (sock, 0); | |
124 | if (ret < 0) | |
125 | return ret; | |
126 | ret = setsockopt_ipv6_hoplimit (sock, 1); | |
127 | if (ret < 0) | |
128 | return ret; | |
129 | ||
130 | memset (&ripaddr, 0, sizeof (ripaddr)); | |
131 | ripaddr.sin6_family = AF_INET6; | |
132 | #ifdef SIN6_LEN | |
133 | ripaddr.sin6_len = sizeof (struct sockaddr_in6); | |
134 | #endif /* SIN6_LEN */ | |
135 | ripaddr.sin6_port = htons (RIPNG_PORT_DEFAULT); | |
136 | ||
27d47aa7 | 137 | if (ripngd_privs.change (ZPRIVS_RAISE)) |
138 | zlog_err ("ripng_make_socket: could not raise privs"); | |
139 | ||
718e3744 | 140 | ret = bind (sock, (struct sockaddr *) &ripaddr, sizeof (ripaddr)); |
141 | if (ret < 0) | |
27d47aa7 | 142 | { |
6099b3b5 | 143 | zlog (NULL, LOG_ERR, "Can't bind ripng socket: %s.", safe_strerror (errno)); |
27d47aa7 | 144 | if (ripngd_privs.change (ZPRIVS_LOWER)) |
145 | zlog_err ("ripng_make_socket: could not lower privs"); | |
146 | return ret; | |
147 | } | |
148 | if (ripngd_privs.change (ZPRIVS_LOWER)) | |
149 | zlog_err ("ripng_make_socket: could not lower privs"); | |
718e3744 | 150 | return sock; |
151 | } | |
152 | ||
153 | /* Send RIPng packet. */ | |
154 | int | |
155 | ripng_send_packet (caddr_t buf, int bufsize, struct sockaddr_in6 *to, | |
156 | struct interface *ifp) | |
157 | { | |
158 | int ret; | |
159 | struct msghdr msg; | |
160 | struct iovec iov; | |
161 | struct cmsghdr *cmsgptr; | |
162 | char adata [256]; | |
163 | struct in6_pktinfo *pkt; | |
164 | struct sockaddr_in6 addr; | |
165 | ||
a94434b6 | 166 | if (IS_RIPNG_DEBUG_SEND) { |
167 | if (to) | |
3a2ce6a1 | 168 | zlog_debug ("send to %s", inet6_ntoa (to->sin6_addr)); |
c6106812 | 169 | zlog_debug (" send interface %s", ifp->name); |
170 | zlog_debug (" send packet size %d", bufsize); | |
a94434b6 | 171 | } |
718e3744 | 172 | |
173 | memset (&addr, 0, sizeof (struct sockaddr_in6)); | |
174 | addr.sin6_family = AF_INET6; | |
175 | #ifdef SIN6_LEN | |
176 | addr.sin6_len = sizeof (struct sockaddr_in6); | |
177 | #endif /* SIN6_LEN */ | |
178 | addr.sin6_flowinfo = htonl (RIPNG_PRIORITY_DEFAULT); | |
179 | ||
180 | /* When destination is specified. */ | |
181 | if (to != NULL) | |
182 | { | |
183 | addr.sin6_addr = to->sin6_addr; | |
184 | addr.sin6_port = to->sin6_port; | |
185 | } | |
186 | else | |
187 | { | |
188 | inet_pton(AF_INET6, RIPNG_GROUP, &addr.sin6_addr); | |
189 | addr.sin6_port = htons (RIPNG_PORT_DEFAULT); | |
190 | } | |
191 | ||
192 | msg.msg_name = (void *) &addr; | |
193 | msg.msg_namelen = sizeof (struct sockaddr_in6); | |
194 | msg.msg_iov = &iov; | |
195 | msg.msg_iovlen = 1; | |
196 | msg.msg_control = (void *) adata; | |
197 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
198 | ||
199 | iov.iov_base = buf; | |
200 | iov.iov_len = bufsize; | |
201 | ||
202 | cmsgptr = (struct cmsghdr *)adata; | |
203 | cmsgptr->cmsg_len = CMSG_LEN(sizeof (struct in6_pktinfo)); | |
204 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
205 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
206 | ||
207 | pkt = (struct in6_pktinfo *) CMSG_DATA (cmsgptr); | |
208 | memset (&pkt->ipi6_addr, 0, sizeof (struct in6_addr)); | |
209 | pkt->ipi6_ifindex = ifp->ifindex; | |
210 | ||
211 | ret = sendmsg (ripng->sock, &msg, 0); | |
212 | ||
a94434b6 | 213 | if (ret < 0) { |
214 | if (to) | |
215 | zlog_err ("RIPng send fail on %s to %s: %s", ifp->name, | |
3a2ce6a1 | 216 | inet6_ntoa (to->sin6_addr), safe_strerror (errno)); |
a94434b6 | 217 | else |
6099b3b5 | 218 | zlog_err ("RIPng send fail on %s: %s", ifp->name, safe_strerror (errno)); |
a94434b6 | 219 | } |
718e3744 | 220 | |
221 | return ret; | |
222 | } | |
223 | ||
224 | /* Receive UDP RIPng packet from socket. */ | |
6ac29a51 | 225 | static int |
718e3744 | 226 | ripng_recv_packet (int sock, u_char *buf, int bufsize, |
227 | struct sockaddr_in6 *from, unsigned int *ifindex, | |
228 | int *hoplimit) | |
229 | { | |
230 | int ret; | |
231 | struct msghdr msg; | |
232 | struct iovec iov; | |
233 | struct cmsghdr *cmsgptr; | |
234 | struct in6_addr dst; | |
235 | ||
236 | /* Ancillary data. This store cmsghdr and in6_pktinfo. But at this | |
237 | point I can't determine size of cmsghdr */ | |
238 | char adata[1024]; | |
239 | ||
240 | /* Fill in message and iovec. */ | |
241 | msg.msg_name = (void *) from; | |
242 | msg.msg_namelen = sizeof (struct sockaddr_in6); | |
243 | msg.msg_iov = &iov; | |
244 | msg.msg_iovlen = 1; | |
245 | msg.msg_control = (void *) adata; | |
246 | msg.msg_controllen = sizeof adata; | |
247 | iov.iov_base = buf; | |
248 | iov.iov_len = bufsize; | |
249 | ||
250 | /* If recvmsg fail return minus value. */ | |
251 | ret = recvmsg (sock, &msg, 0); | |
252 | if (ret < 0) | |
253 | return ret; | |
254 | ||
b99760ab | 255 | for (cmsgptr = ZCMSG_FIRSTHDR(&msg); cmsgptr != NULL; |
718e3744 | 256 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) |
257 | { | |
258 | /* I want interface index which this packet comes from. */ | |
259 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 && | |
260 | cmsgptr->cmsg_type == IPV6_PKTINFO) | |
261 | { | |
262 | struct in6_pktinfo *ptr; | |
263 | ||
264 | ptr = (struct in6_pktinfo *) CMSG_DATA (cmsgptr); | |
265 | *ifindex = ptr->ipi6_ifindex; | |
266 | dst = ptr->ipi6_addr; | |
267 | ||
268 | if (*ifindex == 0) | |
269 | zlog_warn ("Interface index returned by IPV6_PKTINFO is zero"); | |
270 | } | |
271 | ||
272 | /* Incoming packet's multicast hop limit. */ | |
273 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 && | |
274 | cmsgptr->cmsg_type == IPV6_HOPLIMIT) | |
275 | *hoplimit = *((int *) CMSG_DATA (cmsgptr)); | |
276 | } | |
277 | ||
278 | /* Hoplimit check shold be done when destination address is | |
279 | multicast address. */ | |
280 | if (! IN6_IS_ADDR_MULTICAST (&dst)) | |
281 | *hoplimit = -1; | |
282 | ||
283 | return ret; | |
284 | } | |
285 | ||
286 | /* Dump rip packet */ | |
287 | void | |
7a1d583c | 288 | ripng_packet_dump (struct ripng_packet *packet, int size, const char *sndrcv) |
718e3744 | 289 | { |
290 | caddr_t lim; | |
291 | struct rte *rte; | |
7a1d583c | 292 | const char *command_str; |
718e3744 | 293 | |
294 | /* Set command string. */ | |
295 | if (packet->command == RIPNG_REQUEST) | |
296 | command_str = "request"; | |
297 | else if (packet->command == RIPNG_RESPONSE) | |
298 | command_str = "response"; | |
299 | else | |
300 | command_str = "unknown"; | |
301 | ||
302 | /* Dump packet header. */ | |
c6106812 | 303 | zlog_debug ("%s %s version %d packet size %d", |
718e3744 | 304 | sndrcv, command_str, packet->version, size); |
305 | ||
306 | /* Dump each routing table entry. */ | |
307 | rte = packet->rte; | |
308 | ||
309 | for (lim = (caddr_t) packet + size; (caddr_t) rte < lim; rte++) | |
310 | { | |
311 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
3a2ce6a1 | 312 | zlog_debug (" nexthop %s/%d", inet6_ntoa (rte->addr), rte->prefixlen); |
718e3744 | 313 | else |
c6106812 | 314 | zlog_debug (" %s/%d metric %d tag %d", |
3a2ce6a1 | 315 | inet6_ntoa (rte->addr), rte->prefixlen, |
718e3744 | 316 | rte->metric, ntohs (rte->tag)); |
317 | } | |
318 | } | |
319 | ||
320 | /* RIPng next hop address RTE (Route Table Entry). */ | |
6ac29a51 | 321 | static void |
718e3744 | 322 | ripng_nexthop_rte (struct rte *rte, |
323 | struct sockaddr_in6 *from, | |
324 | struct ripng_nexthop *nexthop) | |
325 | { | |
326 | char buf[INET6_BUFSIZ]; | |
327 | ||
328 | /* Logging before checking RTE. */ | |
329 | if (IS_RIPNG_DEBUG_RECV) | |
c6106812 | 330 | zlog_debug ("RIPng nexthop RTE address %s tag %d prefixlen %d", |
3a2ce6a1 | 331 | inet6_ntoa (rte->addr), ntohs (rte->tag), rte->prefixlen); |
718e3744 | 332 | |
333 | /* RFC2080 2.1.1 Next Hop: | |
334 | The route tag and prefix length in the next hop RTE must be | |
335 | set to zero on sending and ignored on receiption. */ | |
336 | if (ntohs (rte->tag) != 0) | |
337 | zlog_warn ("RIPng nexthop RTE with non zero tag value %d from %s", | |
3a2ce6a1 | 338 | ntohs (rte->tag), inet6_ntoa (from->sin6_addr)); |
718e3744 | 339 | |
340 | if (rte->prefixlen != 0) | |
341 | zlog_warn ("RIPng nexthop RTE with non zero prefixlen value %d from %s", | |
3a2ce6a1 | 342 | rte->prefixlen, inet6_ntoa (from->sin6_addr)); |
718e3744 | 343 | |
344 | /* Specifying a value of 0:0:0:0:0:0:0:0 in the prefix field of a | |
345 | next hop RTE indicates that the next hop address should be the | |
346 | originator of the RIPng advertisement. An address specified as a | |
347 | next hop must be a link-local address. */ | |
348 | if (IN6_IS_ADDR_UNSPECIFIED (&rte->addr)) | |
349 | { | |
350 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
351 | memset (&nexthop->address, 0, sizeof (struct in6_addr)); | |
352 | return; | |
353 | } | |
354 | ||
355 | if (IN6_IS_ADDR_LINKLOCAL (&rte->addr)) | |
356 | { | |
357 | nexthop->flag = RIPNG_NEXTHOP_ADDRESS; | |
358 | IPV6_ADDR_COPY (&nexthop->address, &rte->addr); | |
359 | return; | |
360 | } | |
361 | ||
362 | /* The purpose of the next hop RTE is to eliminate packets being | |
363 | routed through extra hops in the system. It is particularly useful | |
364 | when RIPng is not being run on all of the routers on a network. | |
365 | Note that next hop RTE is "advisory". That is, if the provided | |
366 | information is ignored, a possibly sub-optimal, but absolutely | |
367 | valid, route may be taken. If the received next hop address is not | |
368 | a link-local address, it should be treated as 0:0:0:0:0:0:0:0. */ | |
369 | zlog_warn ("RIPng nexthop RTE with non link-local address %s from %s", | |
3a2ce6a1 | 370 | inet6_ntoa (rte->addr), |
718e3744 | 371 | inet_ntop (AF_INET6, &from->sin6_addr, buf, INET6_BUFSIZ)); |
372 | ||
373 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
374 | memset (&nexthop->address, 0, sizeof (struct in6_addr)); | |
375 | ||
376 | return; | |
377 | } | |
378 | ||
379 | /* If ifp has same link-local address then return 1. */ | |
6ac29a51 | 380 | static int |
718e3744 | 381 | ripng_lladdr_check (struct interface *ifp, struct in6_addr *addr) |
382 | { | |
1eb8ef25 | 383 | struct listnode *node; |
718e3744 | 384 | struct connected *connected; |
385 | struct prefix *p; | |
386 | ||
1eb8ef25 | 387 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, node, connected)) |
388 | { | |
389 | p = connected->address; | |
718e3744 | 390 | |
1eb8ef25 | 391 | if (p->family == AF_INET6 && |
392 | IN6_IS_ADDR_LINKLOCAL (&p->u.prefix6) && | |
393 | IN6_ARE_ADDR_EQUAL (&p->u.prefix6, addr)) | |
394 | return 1; | |
395 | } | |
718e3744 | 396 | return 0; |
397 | } | |
398 | ||
399 | /* RIPng route garbage collect timer. */ | |
6ac29a51 | 400 | static int |
718e3744 | 401 | ripng_garbage_collect (struct thread *t) |
402 | { | |
403 | struct ripng_info *rinfo; | |
404 | struct route_node *rp; | |
405 | ||
406 | rinfo = THREAD_ARG (t); | |
407 | rinfo->t_garbage_collect = NULL; | |
408 | ||
409 | /* Off timeout timer. */ | |
410 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
411 | ||
412 | /* Get route_node pointer. */ | |
413 | rp = rinfo->rp; | |
414 | ||
718e3744 | 415 | /* Unlock route_node. */ |
416 | rp->info = NULL; | |
417 | route_unlock_node (rp); | |
418 | ||
419 | /* Free RIPng routing information. */ | |
420 | ripng_info_free (rinfo); | |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
425 | /* Timeout RIPng routes. */ | |
6ac29a51 | 426 | static int |
718e3744 | 427 | ripng_timeout (struct thread *t) |
428 | { | |
429 | struct ripng_info *rinfo; | |
430 | struct route_node *rp; | |
431 | ||
432 | rinfo = THREAD_ARG (t); | |
433 | rinfo->t_timeout = NULL; | |
434 | ||
435 | /* Get route_node pointer. */ | |
436 | rp = rinfo->rp; | |
437 | ||
438 | /* - The garbage-collection timer is set for 120 seconds. */ | |
439 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, ripng_garbage_collect, | |
440 | ripng->garbage_time); | |
441 | ||
a94434b6 | 442 | /* Delete this route from the kernel. */ |
443 | ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, &rinfo->nexthop, | |
444 | rinfo->ifindex); | |
718e3744 | 445 | /* - The metric for the route is set to 16 (infinity). This causes |
446 | the route to be removed from service. */ | |
447 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
a94434b6 | 448 | rinfo->flags &= ~RIPNG_RTF_FIB; |
449 | ||
450 | /* Aggregate count decrement. */ | |
451 | ripng_aggregate_decrement (rp, rinfo); | |
718e3744 | 452 | |
453 | /* - The route change flag is to indicate that this entry has been | |
454 | changed. */ | |
455 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
456 | ||
457 | /* - The output process is signalled to trigger a response. */ | |
458 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
6ac29a51 | 463 | static void |
718e3744 | 464 | ripng_timeout_update (struct ripng_info *rinfo) |
465 | { | |
466 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
467 | { | |
468 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
469 | RIPNG_TIMER_ON (rinfo->t_timeout, ripng_timeout, ripng->timeout_time); | |
470 | } | |
471 | } | |
472 | ||
6ac29a51 | 473 | static int |
a94434b6 | 474 | ripng_incoming_filter (struct prefix_ipv6 *p, struct ripng_interface *ri) |
475 | { | |
476 | struct distribute *dist; | |
477 | struct access_list *alist; | |
478 | struct prefix_list *plist; | |
479 | ||
480 | /* Input distribute-list filtering. */ | |
481 | if (ri->list[RIPNG_FILTER_IN]) | |
482 | { | |
483 | if (access_list_apply (ri->list[RIPNG_FILTER_IN], | |
484 | (struct prefix *) p) == FILTER_DENY) | |
485 | { | |
486 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 487 | zlog_debug ("%s/%d filtered by distribute in", |
3a2ce6a1 | 488 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 489 | return -1; |
490 | } | |
491 | } | |
492 | if (ri->prefix[RIPNG_FILTER_IN]) | |
493 | { | |
494 | if (prefix_list_apply (ri->prefix[RIPNG_FILTER_IN], | |
495 | (struct prefix *) p) == PREFIX_DENY) | |
496 | { | |
497 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 498 | zlog_debug ("%s/%d filtered by prefix-list in", |
3a2ce6a1 | 499 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 500 | return -1; |
501 | } | |
502 | } | |
503 | ||
504 | /* All interface filter check. */ | |
505 | dist = distribute_lookup (NULL); | |
506 | if (dist) | |
507 | { | |
508 | if (dist->list[DISTRIBUTE_IN]) | |
509 | { | |
510 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]); | |
511 | ||
512 | if (alist) | |
513 | { | |
514 | if (access_list_apply (alist, | |
515 | (struct prefix *) p) == FILTER_DENY) | |
516 | { | |
517 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 518 | zlog_debug ("%s/%d filtered by distribute in", |
3a2ce6a1 | 519 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 520 | return -1; |
521 | } | |
522 | } | |
523 | } | |
524 | if (dist->prefix[DISTRIBUTE_IN]) | |
525 | { | |
526 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]); | |
527 | ||
528 | if (plist) | |
529 | { | |
530 | if (prefix_list_apply (plist, | |
531 | (struct prefix *) p) == PREFIX_DENY) | |
532 | { | |
533 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 534 | zlog_debug ("%s/%d filtered by prefix-list in", |
3a2ce6a1 | 535 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 536 | return -1; |
537 | } | |
538 | } | |
539 | } | |
540 | } | |
541 | return 0; | |
542 | } | |
543 | ||
6ac29a51 | 544 | static int |
a94434b6 | 545 | ripng_outgoing_filter (struct prefix_ipv6 *p, struct ripng_interface *ri) |
546 | { | |
547 | struct distribute *dist; | |
548 | struct access_list *alist; | |
549 | struct prefix_list *plist; | |
550 | ||
551 | if (ri->list[RIPNG_FILTER_OUT]) | |
552 | { | |
553 | if (access_list_apply (ri->list[RIPNG_FILTER_OUT], | |
554 | (struct prefix *) p) == FILTER_DENY) | |
555 | { | |
556 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 557 | zlog_debug ("%s/%d is filtered by distribute out", |
3a2ce6a1 | 558 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 559 | return -1; |
560 | } | |
561 | } | |
562 | if (ri->prefix[RIPNG_FILTER_OUT]) | |
563 | { | |
564 | if (prefix_list_apply (ri->prefix[RIPNG_FILTER_OUT], | |
565 | (struct prefix *) p) == PREFIX_DENY) | |
566 | { | |
567 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 568 | zlog_debug ("%s/%d is filtered by prefix-list out", |
3a2ce6a1 | 569 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 570 | return -1; |
571 | } | |
572 | } | |
573 | ||
574 | /* All interface filter check. */ | |
575 | dist = distribute_lookup (NULL); | |
576 | if (dist) | |
577 | { | |
578 | if (dist->list[DISTRIBUTE_OUT]) | |
579 | { | |
580 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]); | |
581 | ||
582 | if (alist) | |
583 | { | |
584 | if (access_list_apply (alist, | |
585 | (struct prefix *) p) == FILTER_DENY) | |
586 | { | |
587 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 588 | zlog_debug ("%s/%d filtered by distribute out", |
3a2ce6a1 | 589 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 590 | return -1; |
591 | } | |
592 | } | |
593 | } | |
594 | if (dist->prefix[DISTRIBUTE_OUT]) | |
595 | { | |
596 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]); | |
597 | ||
598 | if (plist) | |
599 | { | |
600 | if (prefix_list_apply (plist, | |
601 | (struct prefix *) p) == PREFIX_DENY) | |
602 | { | |
603 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 604 | zlog_debug ("%s/%d filtered by prefix-list out", |
3a2ce6a1 | 605 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 606 | return -1; |
607 | } | |
608 | } | |
609 | } | |
610 | } | |
611 | return 0; | |
612 | } | |
613 | ||
718e3744 | 614 | /* Process RIPng route according to RFC2080. */ |
6ac29a51 | 615 | static void |
718e3744 | 616 | ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, |
617 | struct ripng_nexthop *ripng_nexthop, | |
618 | struct interface *ifp) | |
619 | { | |
a94434b6 | 620 | int ret; |
718e3744 | 621 | struct prefix_ipv6 p; |
622 | struct route_node *rp; | |
623 | struct ripng_info *rinfo; | |
624 | struct ripng_interface *ri; | |
625 | struct in6_addr *nexthop; | |
626 | u_char oldmetric; | |
627 | int same = 0; | |
628 | ||
629 | /* Make prefix structure. */ | |
630 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
631 | p.family = AF_INET6; | |
632 | /* p.prefix = rte->addr; */ | |
633 | IPV6_ADDR_COPY (&p.prefix, &rte->addr); | |
634 | p.prefixlen = rte->prefixlen; | |
635 | ||
636 | /* Make sure mask is applied. */ | |
637 | /* XXX We have to check the prefix is valid or not before call | |
638 | apply_mask_ipv6. */ | |
639 | apply_mask_ipv6 (&p); | |
640 | ||
641 | /* Apply input filters. */ | |
642 | ri = ifp->info; | |
643 | ||
a94434b6 | 644 | ret = ripng_incoming_filter (&p, ri); |
645 | if (ret < 0) | |
646 | return; | |
718e3744 | 647 | |
648 | /* Modify entry. */ | |
649 | if (ri->routemap[RIPNG_FILTER_IN]) | |
650 | { | |
651 | int ret; | |
652 | struct ripng_info newinfo; | |
653 | ||
41ce926c | 654 | memset (&newinfo, 0, sizeof (struct ripng_info)); |
a94434b6 | 655 | newinfo.type = ZEBRA_ROUTE_RIPNG; |
656 | newinfo.sub_type = RIPNG_ROUTE_RTE; | |
657 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
658 | newinfo.nexthop = ripng_nexthop->address; | |
659 | else | |
660 | newinfo.nexthop = from->sin6_addr; | |
661 | newinfo.from = from->sin6_addr; | |
662 | newinfo.ifindex = ifp->ifindex; | |
718e3744 | 663 | newinfo.metric = rte->metric; |
a94434b6 | 664 | newinfo.metric_out = rte->metric; /* XXX */ |
665 | newinfo.tag = ntohs(rte->tag); /* XXX */ | |
718e3744 | 666 | |
667 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_IN], | |
668 | (struct prefix *)&p, RMAP_RIPNG, &newinfo); | |
669 | ||
670 | if (ret == RMAP_DENYMATCH) | |
671 | { | |
672 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 673 | zlog_debug ("RIPng %s/%d is filtered by route-map in", |
3a2ce6a1 | 674 | inet6_ntoa (p.prefix), p.prefixlen); |
718e3744 | 675 | return; |
676 | } | |
677 | ||
a94434b6 | 678 | /* Get back the object */ |
679 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) { | |
680 | if (! IPV6_ADDR_SAME(&newinfo.nexthop, &ripng_nexthop->address) ) { | |
681 | /* the nexthop get changed by the routemap */ | |
682 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) | |
683 | ripng_nexthop->address = newinfo.nexthop; | |
684 | else | |
685 | ripng_nexthop->address = in6addr_any; | |
686 | } | |
687 | } else { | |
688 | if (! IPV6_ADDR_SAME(&newinfo.nexthop, &from->sin6_addr) ) { | |
689 | /* the nexthop get changed by the routemap */ | |
690 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) { | |
691 | ripng_nexthop->flag = RIPNG_NEXTHOP_ADDRESS; | |
692 | ripng_nexthop->address = newinfo.nexthop; | |
693 | } | |
694 | } | |
695 | } | |
696 | rte->tag = htons(newinfo.tag_out); /* XXX */ | |
697 | rte->metric = newinfo.metric_out; /* XXX: the routemap uses the metric_out field */ | |
718e3744 | 698 | } |
699 | ||
a94434b6 | 700 | /* Once the entry has been validated, update the metric by |
701 | * adding the cost of the network on wich the message | |
702 | * arrived. If the result is greater than infinity, use infinity | |
703 | * (RFC2453 Sec. 3.9.2) | |
704 | **/ | |
705 | ||
706 | /* Zebra ripngd can handle offset-list in. */ | |
707 | ret = ripng_offset_list_apply_in (&p, ifp, &rte->metric); | |
708 | ||
709 | /* If offset-list does not modify the metric use interface's | |
710 | * one. */ | |
711 | if (! ret) | |
712 | rte->metric += ifp->metric; | |
713 | ||
714 | if (rte->metric > RIPNG_METRIC_INFINITY) | |
715 | rte->metric = RIPNG_METRIC_INFINITY; | |
716 | ||
718e3744 | 717 | /* Set nexthop pointer. */ |
718 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
719 | nexthop = &ripng_nexthop->address; | |
720 | else | |
721 | nexthop = &from->sin6_addr; | |
722 | ||
723 | /* Lookup RIPng routing table. */ | |
724 | rp = route_node_get (ripng->table, (struct prefix *) &p); | |
725 | ||
a94434b6 | 726 | /* Sanity check */ |
727 | rinfo = rp->info; | |
728 | if (rinfo) | |
729 | { | |
730 | /* Redistributed route check. */ | |
731 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
732 | && rinfo->metric != RIPNG_METRIC_INFINITY) | |
733 | return; | |
734 | ||
735 | /* Local static route. */ | |
736 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
737 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) || | |
738 | (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) | |
739 | && rinfo->metric != RIPNG_METRIC_INFINITY) | |
740 | return; | |
741 | } | |
742 | ||
718e3744 | 743 | if (rp->info == NULL) |
744 | { | |
745 | /* Now, check to see whether there is already an explicit route | |
746 | for the destination prefix. If there is no such route, add | |
747 | this route to the routing table, unless the metric is | |
748 | infinity (there is no point in adding a route which | |
749 | unusable). */ | |
750 | if (rte->metric != RIPNG_METRIC_INFINITY) | |
751 | { | |
752 | rinfo = ripng_info_new (); | |
753 | ||
754 | /* - Setting the destination prefix and length to those in | |
755 | the RTE. */ | |
756 | rp->info = rinfo; | |
757 | rinfo->rp = rp; | |
758 | ||
759 | /* - Setting the metric to the newly calculated metric (as | |
760 | described above). */ | |
761 | rinfo->metric = rte->metric; | |
762 | rinfo->tag = ntohs (rte->tag); | |
763 | ||
764 | /* - Set the next hop address to be the address of the router | |
765 | from which the datagram came or the next hop address | |
766 | specified by a next hop RTE. */ | |
767 | IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); | |
768 | IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr); | |
769 | rinfo->ifindex = ifp->ifindex; | |
770 | ||
771 | /* - Initialize the timeout for the route. If the | |
772 | garbage-collection timer is running for this route, stop it. */ | |
773 | ripng_timeout_update (rinfo); | |
774 | ||
775 | /* - Set the route change flag. */ | |
776 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
777 | ||
778 | /* - Signal the output process to trigger an update (see section | |
779 | 2.5). */ | |
780 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
781 | ||
782 | /* Finally, route goes into the kernel. */ | |
783 | rinfo->type = ZEBRA_ROUTE_RIPNG; | |
784 | rinfo->sub_type = RIPNG_ROUTE_RTE; | |
785 | ||
deba3550 | 786 | ripng_zebra_ipv6_add (&p, &rinfo->nexthop, rinfo->ifindex, |
787 | rinfo->metric); | |
718e3744 | 788 | rinfo->flags |= RIPNG_RTF_FIB; |
789 | ||
790 | /* Aggregate check. */ | |
791 | ripng_aggregate_increment (rp, rinfo); | |
792 | } | |
793 | } | |
794 | else | |
795 | { | |
796 | rinfo = rp->info; | |
797 | ||
798 | /* If there is an existing route, compare the next hop address | |
799 | to the address of the router from which the datagram came. | |
800 | If this datagram is from the same router as the existing | |
801 | route, reinitialize the timeout. */ | |
802 | same = (IN6_ARE_ADDR_EQUAL (&rinfo->from, &from->sin6_addr) | |
803 | && (rinfo->ifindex == ifp->ifindex)); | |
804 | ||
805 | if (same) | |
806 | ripng_timeout_update (rinfo); | |
807 | ||
808 | /* Next, compare the metrics. If the datagram is from the same | |
809 | router as the existing route, and the new metric is different | |
810 | than the old one; or, if the new metric is lower than the old | |
811 | one; do the following actions: */ | |
812 | if ((same && rinfo->metric != rte->metric) || | |
813 | rte->metric < rinfo->metric) | |
814 | { | |
815 | /* - Adopt the route from the datagram. That is, put the | |
816 | new metric in, and adjust the next hop address (if | |
817 | necessary). */ | |
818 | oldmetric = rinfo->metric; | |
819 | rinfo->metric = rte->metric; | |
820 | rinfo->tag = ntohs (rte->tag); | |
a94434b6 | 821 | IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr); |
822 | rinfo->ifindex = ifp->ifindex; | |
718e3744 | 823 | |
a94434b6 | 824 | /* Should a new route to this network be established |
825 | while the garbage-collection timer is running, the | |
826 | new route will replace the one that is about to be | |
827 | deleted. In this case the garbage-collection timer | |
828 | must be cleared. */ | |
829 | ||
830 | if (oldmetric == RIPNG_METRIC_INFINITY && | |
831 | rinfo->metric < RIPNG_METRIC_INFINITY) | |
832 | { | |
833 | rinfo->type = ZEBRA_ROUTE_RIPNG; | |
834 | rinfo->sub_type = RIPNG_ROUTE_RTE; | |
835 | ||
836 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
837 | ||
838 | if (! IPV6_ADDR_SAME (&rinfo->nexthop, nexthop)) | |
deba3550 | 839 | IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); |
a94434b6 | 840 | |
deba3550 | 841 | ripng_zebra_ipv6_add (&p, nexthop, ifp->ifindex, rinfo->metric); |
a94434b6 | 842 | rinfo->flags |= RIPNG_RTF_FIB; |
843 | ||
844 | /* The aggregation counter needs to be updated because | |
845 | the prefixes, which are into the gc, have been | |
846 | removed from the aggregator (see ripng_timout). */ | |
847 | ripng_aggregate_increment (rp, rinfo); | |
848 | } | |
849 | ||
850 | /* Update nexthop and/or metric value. */ | |
851 | if (oldmetric != RIPNG_METRIC_INFINITY) | |
718e3744 | 852 | { |
853 | ripng_zebra_ipv6_delete (&p, &rinfo->nexthop, rinfo->ifindex); | |
deba3550 | 854 | ripng_zebra_ipv6_add (&p, nexthop, ifp->ifindex, rinfo->metric); |
718e3744 | 855 | rinfo->flags |= RIPNG_RTF_FIB; |
856 | ||
a94434b6 | 857 | if (! IPV6_ADDR_SAME (&rinfo->nexthop, nexthop)) |
858 | IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); | |
718e3744 | 859 | } |
718e3744 | 860 | |
861 | /* - Set the route change flag and signal the output process | |
862 | to trigger an update. */ | |
863 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
864 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
865 | ||
866 | /* - If the new metric is infinity, start the deletion | |
867 | process (described above); */ | |
868 | if (rinfo->metric == RIPNG_METRIC_INFINITY) | |
869 | { | |
870 | /* If the new metric is infinity, the deletion process | |
871 | begins for the route, which is no longer used for | |
872 | routing packets. Note that the deletion process is | |
873 | started only when the metric is first set to | |
874 | infinity. If the metric was already infinity, then a | |
875 | new deletion process is not started. */ | |
876 | if (oldmetric != RIPNG_METRIC_INFINITY) | |
877 | { | |
878 | /* - The garbage-collection timer is set for 120 seconds. */ | |
879 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, | |
880 | ripng_garbage_collect, ripng->garbage_time); | |
881 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
882 | ||
883 | /* - The metric for the route is set to 16 | |
884 | (infinity). This causes the route to be removed | |
885 | from service.*/ | |
a94434b6 | 886 | ripng_zebra_ipv6_delete (&p, &rinfo->nexthop, rinfo->ifindex); |
887 | rinfo->flags &= ~RIPNG_RTF_FIB; | |
888 | ||
889 | /* Aggregate count decrement. */ | |
890 | ripng_aggregate_decrement (rp, rinfo); | |
891 | ||
718e3744 | 892 | /* - The route change flag is to indicate that this |
893 | entry has been changed. */ | |
894 | /* - The output process is signalled to trigger a | |
895 | response. */ | |
896 | ; /* Above processes are already done previously. */ | |
897 | } | |
898 | } | |
899 | else | |
900 | { | |
901 | /* otherwise, re-initialize the timeout. */ | |
902 | ripng_timeout_update (rinfo); | |
718e3744 | 903 | } |
904 | } | |
905 | /* Unlock tempolary lock of the route. */ | |
906 | route_unlock_node (rp); | |
907 | } | |
908 | } | |
909 | ||
910 | /* Add redistributed route to RIPng table. */ | |
911 | void | |
912 | ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p, | |
a94434b6 | 913 | unsigned int ifindex, struct in6_addr *nexthop) |
718e3744 | 914 | { |
915 | struct route_node *rp; | |
916 | struct ripng_info *rinfo; | |
917 | ||
918 | /* Redistribute route */ | |
919 | if (IN6_IS_ADDR_LINKLOCAL (&p->prefix)) | |
920 | return; | |
921 | if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) | |
922 | return; | |
a94434b6 | 923 | #if defined (MUSICA) || defined (LINUX) |
924 | /* XXX As long as the RIPng redistribution is applied to all the connected | |
925 | * routes, one needs to filter the ::/96 prefixes. | |
926 | * However it could be a wanted case, it will be removed soon. | |
927 | */ | |
928 | if ((IN6_IS_ADDR_V4COMPAT(&p->prefix)) || | |
929 | (IN6_IS_ADDR_UNSPECIFIED (&p->prefix) && (p->prefixlen == 96))) | |
930 | return; | |
931 | #endif /* MUSICA or LINUX */ | |
718e3744 | 932 | |
933 | rp = route_node_get (ripng->table, (struct prefix *) p); | |
934 | rinfo = rp->info; | |
935 | ||
936 | if (rinfo) | |
937 | { | |
a94434b6 | 938 | if (rinfo->type == ZEBRA_ROUTE_CONNECT |
939 | && rinfo->sub_type == RIPNG_ROUTE_INTERFACE | |
940 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
941 | route_unlock_node (rp); | |
942 | return; | |
943 | } | |
944 | ||
945 | /* Manually configured RIPng route check. | |
946 | * They have the precedence on all the other entries. | |
947 | **/ | |
948 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
949 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) || | |
950 | (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) ) { | |
951 | if (type != ZEBRA_ROUTE_RIPNG || ((sub_type != RIPNG_ROUTE_STATIC) && | |
952 | (sub_type != RIPNG_ROUTE_DEFAULT))) { | |
953 | route_unlock_node (rp); | |
954 | return; | |
955 | } | |
956 | } | |
957 | ||
718e3744 | 958 | RIPNG_TIMER_OFF (rinfo->t_timeout); |
959 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
a94434b6 | 960 | |
961 | /* Tells the other daemons about the deletion of | |
962 | * this RIPng route | |
963 | **/ | |
964 | if (ripng_route_rte (rinfo)) | |
965 | ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, &rinfo->nexthop, | |
966 | rinfo->metric); | |
967 | ||
968 | rp->info = NULL; | |
969 | ripng_info_free (rinfo); | |
970 | ||
718e3744 | 971 | route_unlock_node (rp); |
a94434b6 | 972 | |
718e3744 | 973 | } |
a94434b6 | 974 | |
975 | rinfo = ripng_info_new (); | |
718e3744 | 976 | |
977 | rinfo->type = type; | |
978 | rinfo->sub_type = sub_type; | |
979 | rinfo->ifindex = ifindex; | |
980 | rinfo->metric = 1; | |
718e3744 | 981 | rinfo->rp = rp; |
a94434b6 | 982 | |
983 | if (nexthop && IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
984 | rinfo->nexthop = *nexthop; | |
985 | ||
986 | rinfo->flags |= RIPNG_RTF_FIB; | |
718e3744 | 987 | rp->info = rinfo; |
a94434b6 | 988 | |
989 | /* Aggregate check. */ | |
990 | ripng_aggregate_increment (rp, rinfo); | |
991 | ||
992 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
993 | ||
994 | if (IS_RIPNG_DEBUG_EVENT) { | |
995 | if (!nexthop) | |
c6106812 | 996 | zlog_debug ("Redistribute new prefix %s/%d on the interface %s", |
3a2ce6a1 | 997 | inet6_ntoa(p->prefix), p->prefixlen, |
a94434b6 | 998 | ifindex2ifname(ifindex)); |
999 | else | |
c6106812 | 1000 | zlog_debug ("Redistribute new prefix %s/%d with nexthop %s on the interface %s", |
3a2ce6a1 | 1001 | inet6_ntoa(p->prefix), p->prefixlen, inet6_ntoa(*nexthop), |
a94434b6 | 1002 | ifindex2ifname(ifindex)); |
1003 | } | |
1004 | ||
1005 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
718e3744 | 1006 | } |
1007 | ||
1008 | /* Delete redistributed route to RIPng table. */ | |
1009 | void | |
1010 | ripng_redistribute_delete (int type, int sub_type, struct prefix_ipv6 *p, | |
1011 | unsigned int ifindex) | |
1012 | { | |
1013 | struct route_node *rp; | |
1014 | struct ripng_info *rinfo; | |
1015 | ||
1016 | if (IN6_IS_ADDR_LINKLOCAL (&p->prefix)) | |
1017 | return; | |
1018 | if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) | |
1019 | return; | |
a94434b6 | 1020 | #if defined (MUSICA) || defined (LINUX) |
1021 | /* XXX As long as the RIPng redistribution is applied to all the connected | |
1022 | * routes, one needs to filter the ::/96 prefixes. | |
1023 | * However it could be a wanted case, it will be removed soon. | |
1024 | */ | |
1025 | if ((IN6_IS_ADDR_V4COMPAT(&p->prefix)) || | |
1026 | (IN6_IS_ADDR_UNSPECIFIED (&p->prefix) && (p->prefixlen == 96))) | |
1027 | return; | |
1028 | #endif /* MUSICA or LINUX */ | |
718e3744 | 1029 | |
1030 | rp = route_node_lookup (ripng->table, (struct prefix *) p); | |
1031 | ||
1032 | if (rp) | |
1033 | { | |
1034 | rinfo = rp->info; | |
1035 | ||
1036 | if (rinfo != NULL | |
1037 | && rinfo->type == type | |
1038 | && rinfo->sub_type == sub_type | |
1039 | && rinfo->ifindex == ifindex) | |
1040 | { | |
a94434b6 | 1041 | /* Perform poisoned reverse. */ |
1042 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1043 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, | |
1044 | ripng_garbage_collect, ripng->garbage_time); | |
718e3744 | 1045 | RIPNG_TIMER_OFF (rinfo->t_timeout); |
a94434b6 | 1046 | |
1047 | /* Aggregate count decrement. */ | |
1048 | ripng_aggregate_decrement (rp, rinfo); | |
1049 | ||
1050 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
718e3744 | 1051 | |
a94434b6 | 1052 | if (IS_RIPNG_DEBUG_EVENT) |
c6106812 | 1053 | zlog_debug ("Poisone %s/%d on the interface %s with an infinity metric [delete]", |
3a2ce6a1 | 1054 | inet6_ntoa(p->prefix), p->prefixlen, |
a94434b6 | 1055 | ifindex2ifname(ifindex)); |
718e3744 | 1056 | |
a94434b6 | 1057 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); |
718e3744 | 1058 | } |
718e3744 | 1059 | } |
1060 | } | |
1061 | ||
1062 | /* Withdraw redistributed route. */ | |
1063 | void | |
1064 | ripng_redistribute_withdraw (int type) | |
1065 | { | |
1066 | struct route_node *rp; | |
1067 | struct ripng_info *rinfo; | |
1068 | ||
a94434b6 | 1069 | if (!ripng) |
1070 | return; | |
1071 | ||
718e3744 | 1072 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) |
1073 | if ((rinfo = rp->info) != NULL) | |
1074 | { | |
a94434b6 | 1075 | if ((rinfo->type == type) |
1076 | && (rinfo->sub_type != RIPNG_ROUTE_INTERFACE)) | |
718e3744 | 1077 | { |
a94434b6 | 1078 | /* Perform poisoned reverse. */ |
1079 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1080 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, | |
1081 | ripng_garbage_collect, ripng->garbage_time); | |
718e3744 | 1082 | RIPNG_TIMER_OFF (rinfo->t_timeout); |
718e3744 | 1083 | |
a94434b6 | 1084 | /* Aggregate count decrement. */ |
1085 | ripng_aggregate_decrement (rp, rinfo); | |
1086 | ||
1087 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1088 | ||
1089 | if (IS_RIPNG_DEBUG_EVENT) { | |
1090 | struct prefix_ipv6 *p = (struct prefix_ipv6 *) &rp->p; | |
718e3744 | 1091 | |
c6106812 | 1092 | zlog_debug ("Poisone %s/%d on the interface %s [withdraw]", |
3a2ce6a1 | 1093 | inet6_ntoa(p->prefix), p->prefixlen, |
a94434b6 | 1094 | ifindex2ifname(rinfo->ifindex)); |
1095 | } | |
1096 | ||
1097 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
718e3744 | 1098 | } |
1099 | } | |
1100 | } | |
1101 | ||
1102 | /* RIP routing information. */ | |
6ac29a51 | 1103 | static void |
718e3744 | 1104 | ripng_response_process (struct ripng_packet *packet, int size, |
1105 | struct sockaddr_in6 *from, struct interface *ifp, | |
1106 | int hoplimit) | |
1107 | { | |
1108 | caddr_t lim; | |
1109 | struct rte *rte; | |
1110 | struct ripng_nexthop nexthop; | |
1111 | ||
1112 | /* RFC2080 2.4.2 Response Messages: | |
1113 | The Response must be ignored if it is not from the RIPng port. */ | |
1114 | if (ntohs (from->sin6_port) != RIPNG_PORT_DEFAULT) | |
1115 | { | |
1116 | zlog_warn ("RIPng packet comes from non RIPng port %d from %s", | |
3a2ce6a1 | 1117 | ntohs (from->sin6_port), inet6_ntoa (from->sin6_addr)); |
a94434b6 | 1118 | ripng_peer_bad_packet (from); |
718e3744 | 1119 | return; |
1120 | } | |
1121 | ||
1122 | /* The datagram's IPv6 source address should be checked to see | |
1123 | whether the datagram is from a valid neighbor; the source of the | |
1124 | datagram must be a link-local address. */ | |
1125 | if (! IN6_IS_ADDR_LINKLOCAL(&from->sin6_addr)) | |
1126 | { | |
1127 | zlog_warn ("RIPng packet comes from non link local address %s", | |
3a2ce6a1 | 1128 | inet6_ntoa (from->sin6_addr)); |
a94434b6 | 1129 | ripng_peer_bad_packet (from); |
718e3744 | 1130 | return; |
1131 | } | |
1132 | ||
1133 | /* It is also worth checking to see whether the response is from one | |
1134 | of the router's own addresses. Interfaces on broadcast networks | |
1135 | may receive copies of their own multicasts immediately. If a | |
1136 | router processes its own output as new input, confusion is likely, | |
1137 | and such datagrams must be ignored. */ | |
1138 | if (ripng_lladdr_check (ifp, &from->sin6_addr)) | |
1139 | { | |
1140 | zlog_warn ("RIPng packet comes from my own link local address %s", | |
3a2ce6a1 | 1141 | inet6_ntoa (from->sin6_addr)); |
a94434b6 | 1142 | ripng_peer_bad_packet (from); |
718e3744 | 1143 | return; |
1144 | } | |
1145 | ||
1146 | /* As an additional check, periodic advertisements must have their | |
1147 | hop counts set to 255, and inbound, multicast packets sent from the | |
1148 | RIPng port (i.e. periodic advertisement or triggered update | |
1149 | packets) must be examined to ensure that the hop count is 255. */ | |
1150 | if (hoplimit >= 0 && hoplimit != 255) | |
1151 | { | |
1152 | zlog_warn ("RIPng packet comes with non 255 hop count %d from %s", | |
3a2ce6a1 | 1153 | hoplimit, inet6_ntoa (from->sin6_addr)); |
a94434b6 | 1154 | ripng_peer_bad_packet (from); |
718e3744 | 1155 | return; |
1156 | } | |
1157 | ||
a94434b6 | 1158 | /* Update RIPng peer. */ |
1159 | ripng_peer_update (from, packet->version); | |
1160 | ||
718e3744 | 1161 | /* Reset nexthop. */ |
1162 | memset (&nexthop, 0, sizeof (struct ripng_nexthop)); | |
1163 | nexthop.flag = RIPNG_NEXTHOP_UNSPEC; | |
1164 | ||
1165 | /* Set RTE pointer. */ | |
1166 | rte = packet->rte; | |
1167 | ||
1168 | for (lim = ((caddr_t) packet) + size; (caddr_t) rte < lim; rte++) | |
1169 | { | |
1170 | /* First of all, we have to check this RTE is next hop RTE or | |
1171 | not. Next hop RTE is completely different with normal RTE so | |
1172 | we need special treatment. */ | |
1173 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
1174 | { | |
1175 | ripng_nexthop_rte (rte, from, &nexthop); | |
1176 | continue; | |
1177 | } | |
1178 | ||
1179 | /* RTE information validation. */ | |
1180 | ||
1181 | /* - is the destination prefix valid (e.g., not a multicast | |
1182 | prefix and not a link-local address) A link-local address | |
1183 | should never be present in an RTE. */ | |
1184 | if (IN6_IS_ADDR_MULTICAST (&rte->addr)) | |
1185 | { | |
1186 | zlog_warn ("Destination prefix is a multicast address %s/%d [%d]", | |
3a2ce6a1 | 1187 | inet6_ntoa (rte->addr), rte->prefixlen, rte->metric); |
a94434b6 | 1188 | ripng_peer_bad_route (from); |
718e3744 | 1189 | continue; |
1190 | } | |
1191 | if (IN6_IS_ADDR_LINKLOCAL (&rte->addr)) | |
1192 | { | |
1193 | zlog_warn ("Destination prefix is a link-local address %s/%d [%d]", | |
3a2ce6a1 | 1194 | inet6_ntoa (rte->addr), rte->prefixlen, rte->metric); |
a94434b6 | 1195 | ripng_peer_bad_route (from); |
718e3744 | 1196 | continue; |
1197 | } | |
1198 | if (IN6_IS_ADDR_LOOPBACK (&rte->addr)) | |
1199 | { | |
1200 | zlog_warn ("Destination prefix is a loopback address %s/%d [%d]", | |
3a2ce6a1 | 1201 | inet6_ntoa (rte->addr), rte->prefixlen, rte->metric); |
a94434b6 | 1202 | ripng_peer_bad_route (from); |
718e3744 | 1203 | continue; |
1204 | } | |
1205 | ||
1206 | /* - is the prefix length valid (i.e., between 0 and 128, | |
1207 | inclusive) */ | |
1208 | if (rte->prefixlen > 128) | |
1209 | { | |
1210 | zlog_warn ("Invalid prefix length %s/%d from %s%%%s", | |
3a2ce6a1 | 1211 | inet6_ntoa (rte->addr), rte->prefixlen, |
1212 | inet6_ntoa (from->sin6_addr), ifp->name); | |
a94434b6 | 1213 | ripng_peer_bad_route (from); |
718e3744 | 1214 | continue; |
1215 | } | |
1216 | ||
1217 | /* - is the metric valid (i.e., between 1 and 16, inclusive) */ | |
1218 | if (! (rte->metric >= 1 && rte->metric <= 16)) | |
1219 | { | |
1220 | zlog_warn ("Invalid metric %d from %s%%%s", rte->metric, | |
3a2ce6a1 | 1221 | inet6_ntoa (from->sin6_addr), ifp->name); |
a94434b6 | 1222 | ripng_peer_bad_route (from); |
718e3744 | 1223 | continue; |
1224 | } | |
1225 | ||
a94434b6 | 1226 | /* Vincent: XXX Should we compute the direclty reachable nexthop |
1227 | * for our RIPng network ? | |
1228 | **/ | |
718e3744 | 1229 | |
1230 | /* Routing table updates. */ | |
1231 | ripng_route_process (rte, from, &nexthop, ifp); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | /* Response to request message. */ | |
6ac29a51 | 1236 | static void |
718e3744 | 1237 | ripng_request_process (struct ripng_packet *packet,int size, |
1238 | struct sockaddr_in6 *from, struct interface *ifp) | |
1239 | { | |
1240 | caddr_t lim; | |
1241 | struct rte *rte; | |
1242 | struct prefix_ipv6 p; | |
1243 | struct route_node *rp; | |
1244 | struct ripng_info *rinfo; | |
1245 | struct ripng_interface *ri; | |
1246 | ||
a94434b6 | 1247 | /* Does not reponse to the requests on the loopback interfaces */ |
1248 | if (if_is_loopback (ifp)) | |
1249 | return; | |
1250 | ||
718e3744 | 1251 | /* Check RIPng process is enabled on this interface. */ |
1252 | ri = ifp->info; | |
1253 | if (! ri->running) | |
1254 | return; | |
1255 | ||
1256 | /* When passive interface is specified, suppress responses */ | |
1257 | if (ri->passive) | |
1258 | return; | |
1259 | ||
a94434b6 | 1260 | /* RIPng peer update. */ |
1261 | ripng_peer_update (from, packet->version); | |
1262 | ||
718e3744 | 1263 | lim = ((caddr_t) packet) + size; |
1264 | rte = packet->rte; | |
1265 | ||
1266 | /* The Request is processed entry by entry. If there are no | |
1267 | entries, no response is given. */ | |
1268 | if (lim == (caddr_t) rte) | |
1269 | return; | |
1270 | ||
1271 | /* There is one special case. If there is exactly one entry in the | |
1272 | request, and it has a destination prefix of zero, a prefix length | |
1273 | of zero, and a metric of infinity (i.e., 16), then this is a | |
1274 | request to send the entire routing table. In that case, a call | |
1275 | is made to the output process to send the routing table to the | |
1276 | requesting address/port. */ | |
1277 | if (lim == ((caddr_t) (rte + 1)) && | |
1278 | IN6_IS_ADDR_UNSPECIFIED (&rte->addr) && | |
1279 | rte->prefixlen == 0 && | |
1280 | rte->metric == RIPNG_METRIC_INFINITY) | |
1281 | { | |
1282 | /* All route with split horizon */ | |
a94434b6 | 1283 | ripng_output_process (ifp, from, ripng_all_route); |
718e3744 | 1284 | } |
1285 | else | |
1286 | { | |
1287 | /* Except for this special case, processing is quite simple. | |
1288 | Examine the list of RTEs in the Request one by one. For each | |
1289 | entry, look up the destination in the router's routing | |
1290 | database and, if there is a route, put that route's metric in | |
1291 | the metric field of the RTE. If there is no explicit route | |
1292 | to the specified destination, put infinity in the metric | |
1293 | field. Once all the entries have been filled in, change the | |
1294 | command from Request to Response and send the datagram back | |
1295 | to the requestor. */ | |
1296 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
1297 | p.family = AF_INET6; | |
1298 | ||
1299 | for (; ((caddr_t) rte) < lim; rte++) | |
1300 | { | |
1301 | p.prefix = rte->addr; | |
1302 | p.prefixlen = rte->prefixlen; | |
1303 | apply_mask_ipv6 (&p); | |
1304 | ||
1305 | rp = route_node_lookup (ripng->table, (struct prefix *) &p); | |
1306 | ||
1307 | if (rp) | |
1308 | { | |
1309 | rinfo = rp->info; | |
1310 | rte->metric = rinfo->metric; | |
1311 | route_unlock_node (rp); | |
1312 | } | |
1313 | else | |
1314 | rte->metric = RIPNG_METRIC_INFINITY; | |
1315 | } | |
1316 | packet->command = RIPNG_RESPONSE; | |
1317 | ||
1318 | ripng_send_packet ((caddr_t) packet, size, from, ifp); | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | /* First entry point of reading RIPng packet. */ | |
6ac29a51 | 1323 | static int |
718e3744 | 1324 | ripng_read (struct thread *thread) |
1325 | { | |
1326 | int len; | |
1327 | int sock; | |
1328 | struct sockaddr_in6 from; | |
1329 | struct ripng_packet *packet; | |
1330 | unsigned int ifindex; | |
1331 | struct interface *ifp; | |
1332 | int hoplimit = -1; | |
1333 | ||
1334 | /* Check ripng is active and alive. */ | |
1335 | assert (ripng != NULL); | |
1336 | assert (ripng->sock >= 0); | |
1337 | ||
1338 | /* Fetch thread data and set read pointer to empty for event | |
1339 | managing. `sock' sould be same as ripng->sock. */ | |
1340 | sock = THREAD_FD (thread); | |
1341 | ripng->t_read = NULL; | |
1342 | ||
1343 | /* Add myself to the next event. */ | |
1344 | ripng_event (RIPNG_READ, sock); | |
1345 | ||
1346 | /* Read RIPng packet. */ | |
1347 | len = ripng_recv_packet (sock, STREAM_DATA (ripng->ibuf), | |
1348 | STREAM_SIZE (ripng->ibuf), &from, &ifindex, | |
1349 | &hoplimit); | |
1350 | if (len < 0) | |
1351 | { | |
6099b3b5 | 1352 | zlog_warn ("RIPng recvfrom failed: %s.", safe_strerror (errno)); |
718e3744 | 1353 | return len; |
1354 | } | |
1355 | ||
1356 | /* Check RTE boundary. RTE size (Packet length - RIPng header size | |
1357 | (4)) must be multiple size of one RTE size (20). */ | |
1358 | if (((len - 4) % 20) != 0) | |
1359 | { | |
1360 | zlog_warn ("RIPng invalid packet size %d from %s", len, | |
3a2ce6a1 | 1361 | inet6_ntoa (from.sin6_addr)); |
a94434b6 | 1362 | ripng_peer_bad_packet (&from); |
718e3744 | 1363 | return 0; |
1364 | } | |
1365 | ||
1366 | packet = (struct ripng_packet *) STREAM_DATA (ripng->ibuf); | |
1367 | ifp = if_lookup_by_index (ifindex); | |
1368 | ||
1369 | /* RIPng packet received. */ | |
1370 | if (IS_RIPNG_DEBUG_EVENT) | |
c6106812 | 1371 | zlog_debug ("RIPng packet received from %s port %d on %s", |
3a2ce6a1 | 1372 | inet6_ntoa (from.sin6_addr), ntohs (from.sin6_port), |
718e3744 | 1373 | ifp ? ifp->name : "unknown"); |
1374 | ||
1375 | /* Logging before packet checking. */ | |
1376 | if (IS_RIPNG_DEBUG_RECV) | |
1377 | ripng_packet_dump (packet, len, "RECV"); | |
1378 | ||
1379 | /* Packet comes from unknown interface. */ | |
1380 | if (ifp == NULL) | |
1381 | { | |
1382 | zlog_warn ("RIPng packet comes from unknown interface %d", ifindex); | |
1383 | return 0; | |
1384 | } | |
1385 | ||
1386 | /* Packet version mismatch checking. */ | |
1387 | if (packet->version != ripng->version) | |
1388 | { | |
1389 | zlog_warn ("RIPng packet version %d doesn't fit to my version %d", | |
1390 | packet->version, ripng->version); | |
a94434b6 | 1391 | ripng_peer_bad_packet (&from); |
718e3744 | 1392 | return 0; |
1393 | } | |
1394 | ||
1395 | /* Process RIPng packet. */ | |
1396 | switch (packet->command) | |
1397 | { | |
1398 | case RIPNG_REQUEST: | |
1399 | ripng_request_process (packet, len, &from, ifp); | |
1400 | break; | |
1401 | case RIPNG_RESPONSE: | |
1402 | ripng_response_process (packet, len, &from, ifp, hoplimit); | |
1403 | break; | |
1404 | default: | |
1405 | zlog_warn ("Invalid RIPng command %d", packet->command); | |
a94434b6 | 1406 | ripng_peer_bad_packet (&from); |
718e3744 | 1407 | break; |
1408 | } | |
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | /* Walk down the RIPng routing table then clear changed flag. */ | |
6ac29a51 PJ |
1413 | static void |
1414 | ripng_clear_changed_flag (void) | |
718e3744 | 1415 | { |
1416 | struct route_node *rp; | |
1417 | struct ripng_info *rinfo; | |
1418 | ||
1419 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
1420 | if ((rinfo = rp->info) != NULL) | |
1421 | if (rinfo->flags & RIPNG_RTF_CHANGED) | |
1422 | rinfo->flags &= ~RIPNG_RTF_CHANGED; | |
1423 | } | |
1424 | ||
1425 | /* Regular update of RIPng route. Send all routing formation to RIPng | |
1426 | enabled interface. */ | |
6ac29a51 | 1427 | static int |
718e3744 | 1428 | ripng_update (struct thread *t) |
1429 | { | |
52dc7ee6 | 1430 | struct listnode *node; |
718e3744 | 1431 | struct interface *ifp; |
1432 | struct ripng_interface *ri; | |
1433 | ||
1434 | /* Clear update timer thread. */ | |
1435 | ripng->t_update = NULL; | |
1436 | ||
1437 | /* Logging update event. */ | |
1438 | if (IS_RIPNG_DEBUG_EVENT) | |
c6106812 | 1439 | zlog_debug ("RIPng update timer expired!"); |
718e3744 | 1440 | |
1441 | /* Supply routes to each interface. */ | |
1eb8ef25 | 1442 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
718e3744 | 1443 | { |
718e3744 | 1444 | ri = ifp->info; |
1445 | ||
1446 | if (if_is_loopback (ifp) || ! if_is_up (ifp)) | |
1447 | continue; | |
1448 | ||
1449 | if (! ri->running) | |
1450 | continue; | |
1451 | ||
1452 | /* When passive interface is specified, suppress announce to the | |
1453 | interface. */ | |
1454 | if (ri->passive) | |
1455 | continue; | |
1456 | ||
1457 | #if RIPNG_ADVANCED | |
1458 | if (ri->ri_send == RIPNG_SEND_OFF) | |
1459 | { | |
1460 | if (IS_RIPNG_DEBUG_EVENT) | |
c6106812 | 1461 | zlog (NULL, LOG_DEBUG, |
718e3744 | 1462 | "[Event] RIPng send to if %d is suppressed by config", |
1463 | ifp->ifindex); | |
1464 | continue; | |
1465 | } | |
1466 | #endif /* RIPNG_ADVANCED */ | |
1467 | ||
a94434b6 | 1468 | ripng_output_process (ifp, NULL, ripng_all_route); |
718e3744 | 1469 | } |
1470 | ||
1471 | /* Triggered updates may be suppressed if a regular update is due by | |
1472 | the time the triggered update would be sent. */ | |
1473 | if (ripng->t_triggered_interval) | |
1474 | { | |
1475 | thread_cancel (ripng->t_triggered_interval); | |
1476 | ripng->t_triggered_interval = NULL; | |
1477 | } | |
1478 | ripng->trigger = 0; | |
1479 | ||
1480 | /* Reset flush event. */ | |
1481 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
1482 | ||
1483 | return 0; | |
1484 | } | |
1485 | ||
1486 | /* Triggered update interval timer. */ | |
6ac29a51 | 1487 | static int |
718e3744 | 1488 | ripng_triggered_interval (struct thread *t) |
1489 | { | |
1490 | ripng->t_triggered_interval = NULL; | |
1491 | ||
1492 | if (ripng->trigger) | |
1493 | { | |
1494 | ripng->trigger = 0; | |
1495 | ripng_triggered_update (t); | |
1496 | } | |
1497 | return 0; | |
1498 | } | |
1499 | ||
1500 | /* Execute triggered update. */ | |
1501 | int | |
1502 | ripng_triggered_update (struct thread *t) | |
1503 | { | |
52dc7ee6 | 1504 | struct listnode *node; |
718e3744 | 1505 | struct interface *ifp; |
1506 | struct ripng_interface *ri; | |
1507 | int interval; | |
1508 | ||
1509 | ripng->t_triggered_update = NULL; | |
1510 | ||
1511 | /* Cancel interval timer. */ | |
1512 | if (ripng->t_triggered_interval) | |
1513 | { | |
1514 | thread_cancel (ripng->t_triggered_interval); | |
1515 | ripng->t_triggered_interval = NULL; | |
1516 | } | |
1517 | ripng->trigger = 0; | |
1518 | ||
1519 | /* Logging triggered update. */ | |
1520 | if (IS_RIPNG_DEBUG_EVENT) | |
c6106812 | 1521 | zlog_debug ("RIPng triggered update!"); |
718e3744 | 1522 | |
1523 | /* Split Horizon processing is done when generating triggered | |
1524 | updates as well as normal updates (see section 2.6). */ | |
1eb8ef25 | 1525 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
718e3744 | 1526 | { |
718e3744 | 1527 | ri = ifp->info; |
1528 | ||
1529 | if (if_is_loopback (ifp) || ! if_is_up (ifp)) | |
1530 | continue; | |
1531 | ||
1532 | if (! ri->running) | |
1533 | continue; | |
1534 | ||
1535 | /* When passive interface is specified, suppress announce to the | |
1536 | interface. */ | |
1537 | if (ri->passive) | |
1538 | continue; | |
1539 | ||
a94434b6 | 1540 | ripng_output_process (ifp, NULL, ripng_changed_route); |
718e3744 | 1541 | } |
1542 | ||
1543 | /* Once all of the triggered updates have been generated, the route | |
1544 | change flags should be cleared. */ | |
1545 | ripng_clear_changed_flag (); | |
1546 | ||
1547 | /* After a triggered update is sent, a timer should be set for a | |
1548 | random interval between 1 and 5 seconds. If other changes that | |
1549 | would trigger updates occur before the timer expires, a single | |
1550 | update is triggered when the timer expires. */ | |
1551 | interval = (random () % 5) + 1; | |
1552 | ||
1553 | ripng->t_triggered_interval = | |
1554 | thread_add_timer (master, ripng_triggered_interval, NULL, interval); | |
1555 | ||
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | /* Write routing table entry to the stream and return next index of | |
1560 | the routing table entry in the stream. */ | |
1561 | int | |
1562 | ripng_write_rte (int num, struct stream *s, struct prefix_ipv6 *p, | |
a94434b6 | 1563 | struct in6_addr *nexthop, u_int16_t tag, u_char metric) |
718e3744 | 1564 | { |
1565 | /* RIPng packet header. */ | |
1566 | if (num == 0) | |
1567 | { | |
1568 | stream_putc (s, RIPNG_RESPONSE); | |
1569 | stream_putc (s, RIPNG_V1); | |
1570 | stream_putw (s, 0); | |
1571 | } | |
1572 | ||
1573 | /* Write routing table entry. */ | |
a94434b6 | 1574 | if (!nexthop) |
c9e52be3 | 1575 | stream_write (s, (u_char *) &p->prefix, sizeof (struct in6_addr)); |
a94434b6 | 1576 | else |
c9e52be3 | 1577 | stream_write (s, (u_char *) nexthop, sizeof (struct in6_addr)); |
718e3744 | 1578 | stream_putw (s, tag); |
a94434b6 | 1579 | if (p) |
1580 | stream_putc (s, p->prefixlen); | |
1581 | else | |
1582 | stream_putc (s, 0); | |
718e3744 | 1583 | stream_putc (s, metric); |
1584 | ||
1585 | return ++num; | |
1586 | } | |
1587 | ||
1588 | /* Send RESPONSE message to specified destination. */ | |
1589 | void | |
1590 | ripng_output_process (struct interface *ifp, struct sockaddr_in6 *to, | |
a94434b6 | 1591 | int route_type) |
718e3744 | 1592 | { |
1593 | int ret; | |
718e3744 | 1594 | struct route_node *rp; |
1595 | struct ripng_info *rinfo; | |
1596 | struct ripng_interface *ri; | |
1597 | struct ripng_aggregate *aggregate; | |
1598 | struct prefix_ipv6 *p; | |
a94434b6 | 1599 | struct list * ripng_rte_list; |
718e3744 | 1600 | |
a94434b6 | 1601 | if (IS_RIPNG_DEBUG_EVENT) { |
1602 | if (to) | |
c6106812 | 1603 | zlog_debug ("RIPng update routes to neighbor %s", |
3a2ce6a1 | 1604 | inet6_ntoa(to->sin6_addr)); |
a94434b6 | 1605 | else |
c6106812 | 1606 | zlog_debug ("RIPng update routes on interface %s", ifp->name); |
a94434b6 | 1607 | } |
718e3744 | 1608 | |
718e3744 | 1609 | /* Get RIPng interface. */ |
1610 | ri = ifp->info; | |
a94434b6 | 1611 | |
1612 | ripng_rte_list = ripng_rte_new(); | |
1613 | ||
718e3744 | 1614 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) |
1615 | { | |
1616 | if ((rinfo = rp->info) != NULL && rinfo->suppress == 0) | |
1617 | { | |
a94434b6 | 1618 | /* If no route-map are applied, the RTE will be these following |
1619 | * informations. | |
1620 | */ | |
718e3744 | 1621 | p = (struct prefix_ipv6 *) &rp->p; |
a94434b6 | 1622 | rinfo->metric_out = rinfo->metric; |
1623 | rinfo->tag_out = rinfo->tag; | |
1624 | memset(&rinfo->nexthop_out, 0, sizeof(rinfo->nexthop_out)); | |
1625 | /* In order to avoid some local loops, | |
1626 | * if the RIPng route has a nexthop via this interface, keep the nexthop, | |
1627 | * otherwise set it to 0. The nexthop should not be propagated | |
1628 | * beyond the local broadcast/multicast area in order | |
1629 | * to avoid an IGP multi-level recursive look-up. | |
1630 | */ | |
1631 | if (rinfo->ifindex == ifp->ifindex) | |
1632 | rinfo->nexthop_out = rinfo->nexthop; | |
1633 | ||
1634 | /* Apply output filters. */ | |
1635 | ret = ripng_outgoing_filter (p, ri); | |
1636 | if (ret < 0) | |
1637 | continue; | |
718e3744 | 1638 | |
1639 | /* Changed route only output. */ | |
1640 | if (route_type == ripng_changed_route && | |
1641 | (! (rinfo->flags & RIPNG_RTF_CHANGED))) | |
1642 | continue; | |
1643 | ||
1644 | /* Split horizon. */ | |
a94434b6 | 1645 | if (ri->split_horizon == RIPNG_SPLIT_HORIZON) |
1646 | { | |
1647 | /* We perform split horizon for RIPng routes. */ | |
1648 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
1649 | rinfo->ifindex == ifp->ifindex) | |
1650 | continue; | |
1651 | } | |
718e3744 | 1652 | |
1653 | /* Preparation for route-map. */ | |
a94434b6 | 1654 | rinfo->metric_set = 0; |
1655 | /* nexthop_out, | |
1656 | * metric_out | |
1657 | * and tag_out are already initialized. | |
1658 | */ | |
718e3744 | 1659 | |
a94434b6 | 1660 | /* Interface route-map */ |
718e3744 | 1661 | if (ri->routemap[RIPNG_FILTER_OUT]) |
1662 | { | |
1663 | int ret; | |
718e3744 | 1664 | |
1665 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT], | |
1666 | (struct prefix *) p, RMAP_RIPNG, | |
a94434b6 | 1667 | rinfo); |
718e3744 | 1668 | |
1669 | if (ret == RMAP_DENYMATCH) | |
1670 | { | |
1671 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 1672 | zlog_debug ("RIPng %s/%d is filtered by route-map out", |
3a2ce6a1 | 1673 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 1674 | continue; |
718e3744 | 1675 | } |
1676 | ||
718e3744 | 1677 | } |
1678 | ||
a94434b6 | 1679 | /* Redistribute route-map. */ |
1680 | if (ripng->route_map[rinfo->type].name) | |
718e3744 | 1681 | { |
a94434b6 | 1682 | int ret; |
1683 | ||
1684 | ret = route_map_apply (ripng->route_map[rinfo->type].map, | |
1685 | (struct prefix *) p, RMAP_RIPNG, | |
bb3a023e | 1686 | rinfo); |
a94434b6 | 1687 | |
1688 | if (ret == RMAP_DENYMATCH) | |
718e3744 | 1689 | { |
a94434b6 | 1690 | if (IS_RIPNG_DEBUG_PACKET) |
c6106812 | 1691 | zlog_debug ("RIPng %s/%d is filtered by route-map", |
3a2ce6a1 | 1692 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 1693 | continue; |
718e3744 | 1694 | } |
a94434b6 | 1695 | } |
718e3744 | 1696 | |
a94434b6 | 1697 | /* When the route-map does not set metric. */ |
1698 | if (! rinfo->metric_set) | |
1699 | { | |
1700 | /* If the redistribute metric is set. */ | |
1701 | if (ripng->route_map[rinfo->type].metric_config | |
1702 | && rinfo->metric != RIPNG_METRIC_INFINITY) | |
1703 | { | |
1704 | rinfo->metric_out = ripng->route_map[rinfo->type].metric; | |
1705 | } | |
1706 | else | |
718e3744 | 1707 | { |
a94434b6 | 1708 | /* If the route is not connected or localy generated |
1709 | one, use default-metric value */ | |
1710 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
1711 | && rinfo->type != ZEBRA_ROUTE_CONNECT | |
718e3744 | 1712 | && rinfo->metric != RIPNG_METRIC_INFINITY) |
a94434b6 | 1713 | rinfo->metric_out = ripng->default_metric; |
718e3744 | 1714 | } |
1715 | } | |
1716 | ||
a94434b6 | 1717 | /* Apply offset-list */ |
1718 | if (rinfo->metric_out != RIPNG_METRIC_INFINITY) | |
1719 | ripng_offset_list_apply_out (p, ifp, &rinfo->metric_out); | |
1720 | ||
1721 | if (rinfo->metric_out > RIPNG_METRIC_INFINITY) | |
1722 | rinfo->metric_out = RIPNG_METRIC_INFINITY; | |
1723 | ||
1724 | /* Perform split-horizon with poisoned reverse | |
1725 | * for RIPng routes. | |
1726 | **/ | |
1727 | if (ri->split_horizon == RIPNG_SPLIT_HORIZON_POISONED_REVERSE) { | |
1728 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
1729 | rinfo->ifindex == ifp->ifindex) | |
1730 | rinfo->metric_out = RIPNG_METRIC_INFINITY; | |
1731 | } | |
1732 | ||
1733 | /* Add RTE to the list */ | |
1734 | ripng_rte_add(ripng_rte_list, p, rinfo, NULL); | |
718e3744 | 1735 | } |
a94434b6 | 1736 | |
1737 | /* Process the aggregated RTE entry */ | |
718e3744 | 1738 | if ((aggregate = rp->aggregate) != NULL && |
1739 | aggregate->count > 0 && | |
1740 | aggregate->suppress == 0) | |
1741 | { | |
a94434b6 | 1742 | /* If no route-map are applied, the RTE will be these following |
1743 | * informations. | |
1744 | */ | |
718e3744 | 1745 | p = (struct prefix_ipv6 *) &rp->p; |
a94434b6 | 1746 | aggregate->metric_set = 0; |
1747 | aggregate->metric_out = aggregate->metric; | |
1748 | aggregate->tag_out = aggregate->tag; | |
1749 | memset(&aggregate->nexthop_out, 0, sizeof(aggregate->nexthop_out)); | |
718e3744 | 1750 | |
1751 | /* Apply output filters.*/ | |
a94434b6 | 1752 | ret = ripng_outgoing_filter (p, ri); |
1753 | if (ret < 0) | |
1754 | continue; | |
718e3744 | 1755 | |
a94434b6 | 1756 | /* Interface route-map */ |
718e3744 | 1757 | if (ri->routemap[RIPNG_FILTER_OUT]) |
1758 | { | |
1759 | int ret; | |
1760 | struct ripng_info newinfo; | |
1761 | ||
a94434b6 | 1762 | /* let's cast the aggregate structure to ripng_info */ |
718e3744 | 1763 | memset (&newinfo, 0, sizeof (struct ripng_info)); |
a94434b6 | 1764 | /* the nexthop is :: */ |
1765 | newinfo.metric = aggregate->metric; | |
1766 | newinfo.metric_out = aggregate->metric_out; | |
1767 | newinfo.tag = aggregate->tag; | |
1768 | newinfo.tag_out = aggregate->tag_out; | |
718e3744 | 1769 | |
1770 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT], | |
1771 | (struct prefix *) p, RMAP_RIPNG, | |
1772 | &newinfo); | |
1773 | ||
1774 | if (ret == RMAP_DENYMATCH) | |
1775 | { | |
1776 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 1777 | zlog_debug ("RIPng %s/%d is filtered by route-map out", |
3a2ce6a1 | 1778 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 1779 | continue; |
718e3744 | 1780 | } |
1781 | ||
a94434b6 | 1782 | aggregate->metric_out = newinfo.metric_out; |
1783 | aggregate->tag_out = newinfo.tag_out; | |
1784 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop_out)) | |
1785 | aggregate->nexthop_out = newinfo.nexthop_out; | |
718e3744 | 1786 | } |
1787 | ||
a94434b6 | 1788 | /* There is no redistribute routemap for the aggregated RTE */ |
1789 | ||
718e3744 | 1790 | /* Changed route only output. */ |
a94434b6 | 1791 | /* XXX, vincent, in order to increase time convergence, |
1792 | * it should be announced if a child has changed. | |
1793 | */ | |
718e3744 | 1794 | if (route_type == ripng_changed_route) |
1795 | continue; | |
1796 | ||
a94434b6 | 1797 | /* Apply offset-list */ |
1798 | if (aggregate->metric_out != RIPNG_METRIC_INFINITY) | |
1799 | ripng_offset_list_apply_out (p, ifp, &aggregate->metric_out); | |
1800 | ||
1801 | if (aggregate->metric_out > RIPNG_METRIC_INFINITY) | |
1802 | aggregate->metric_out = RIPNG_METRIC_INFINITY; | |
1803 | ||
1804 | /* Add RTE to the list */ | |
1805 | ripng_rte_add(ripng_rte_list, p, NULL, aggregate); | |
718e3744 | 1806 | } |
1807 | ||
1808 | } | |
718e3744 | 1809 | |
a94434b6 | 1810 | /* Flush the list */ |
1811 | ripng_rte_send(ripng_rte_list, ifp, to); | |
1812 | ripng_rte_free(ripng_rte_list); | |
718e3744 | 1813 | } |
1814 | ||
1815 | /* Create new RIPng instance and set it to global variable. */ | |
6ac29a51 PJ |
1816 | static int |
1817 | ripng_create (void) | |
718e3744 | 1818 | { |
1819 | /* ripng should be NULL. */ | |
1820 | assert (ripng == NULL); | |
1821 | ||
1822 | /* Allocaste RIPng instance. */ | |
a94434b6 | 1823 | ripng = XMALLOC (MTYPE_RIPNG, sizeof (struct ripng)); |
718e3744 | 1824 | memset (ripng, 0, sizeof (struct ripng)); |
1825 | ||
1826 | /* Default version and timer values. */ | |
1827 | ripng->version = RIPNG_V1; | |
1828 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
1829 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
1830 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
1831 | ripng->default_metric = RIPNG_DEFAULT_METRIC_DEFAULT; | |
1832 | ||
1833 | /* Make buffer. */ | |
1834 | ripng->ibuf = stream_new (RIPNG_MAX_PACKET_SIZE * 5); | |
1835 | ripng->obuf = stream_new (RIPNG_MAX_PACKET_SIZE); | |
1836 | ||
1837 | /* Initialize RIPng routig table. */ | |
1838 | ripng->table = route_table_init (); | |
1839 | ripng->route = route_table_init (); | |
1840 | ripng->aggregate = route_table_init (); | |
1841 | ||
1842 | /* Make socket. */ | |
1843 | ripng->sock = ripng_make_socket (); | |
1844 | if (ripng->sock < 0) | |
1845 | return ripng->sock; | |
1846 | ||
1847 | /* Threads. */ | |
1848 | ripng_event (RIPNG_READ, ripng->sock); | |
1849 | ripng_event (RIPNG_UPDATE_EVENT, 1); | |
1850 | ||
1851 | return 0; | |
1852 | } | |
1853 | ||
a94434b6 | 1854 | /* Send RIPng request to the interface. */ |
718e3744 | 1855 | int |
1856 | ripng_request (struct interface *ifp) | |
1857 | { | |
1858 | struct rte *rte; | |
1859 | struct ripng_packet ripng_packet; | |
1860 | ||
a94434b6 | 1861 | /* In default ripd doesn't send RIP_REQUEST to the loopback interface. */ |
1862 | if (if_is_loopback(ifp)) | |
1863 | return 0; | |
1864 | ||
1865 | /* If interface is down, don't send RIP packet. */ | |
1866 | if (! if_is_up (ifp)) | |
1867 | return 0; | |
1868 | ||
718e3744 | 1869 | if (IS_RIPNG_DEBUG_EVENT) |
c6106812 | 1870 | zlog_debug ("RIPng send request to %s", ifp->name); |
718e3744 | 1871 | |
1872 | memset (&ripng_packet, 0, sizeof (ripng_packet)); | |
1873 | ripng_packet.command = RIPNG_REQUEST; | |
1874 | ripng_packet.version = RIPNG_V1; | |
1875 | rte = ripng_packet.rte; | |
1876 | rte->metric = RIPNG_METRIC_INFINITY; | |
1877 | ||
1878 | return ripng_send_packet ((caddr_t) &ripng_packet, sizeof (ripng_packet), | |
1879 | NULL, ifp); | |
1880 | } | |
1881 | ||
718e3744 | 1882 | \f |
6ac29a51 | 1883 | static int |
718e3744 | 1884 | ripng_update_jitter (int time) |
1885 | { | |
1886 | return ((rand () % (time + 1)) - (time / 2)); | |
1887 | } | |
1888 | ||
1889 | void | |
1890 | ripng_event (enum ripng_event event, int sock) | |
1891 | { | |
718e3744 | 1892 | int jitter = 0; |
1893 | ||
1894 | switch (event) | |
1895 | { | |
1896 | case RIPNG_READ: | |
1897 | if (!ripng->t_read) | |
1898 | ripng->t_read = thread_add_read (master, ripng_read, NULL, sock); | |
1899 | break; | |
1900 | case RIPNG_UPDATE_EVENT: | |
1901 | if (ripng->t_update) | |
1902 | { | |
1903 | thread_cancel (ripng->t_update); | |
1904 | ripng->t_update = NULL; | |
1905 | } | |
1906 | /* Update timer jitter. */ | |
1907 | jitter = ripng_update_jitter (ripng->update_time); | |
1908 | ||
1909 | ripng->t_update = | |
1910 | thread_add_timer (master, ripng_update, NULL, | |
1911 | sock ? 2 : ripng->update_time + jitter); | |
1912 | break; | |
1913 | case RIPNG_TRIGGERED_UPDATE: | |
1914 | if (ripng->t_triggered_interval) | |
1915 | ripng->trigger = 1; | |
1916 | else if (! ripng->t_triggered_update) | |
1917 | ripng->t_triggered_update = | |
1918 | thread_add_event (master, ripng_triggered_update, NULL, 0); | |
1919 | break; | |
1920 | default: | |
1921 | break; | |
1922 | } | |
1923 | } | |
1924 | \f | |
718e3744 | 1925 | |
718e3744 | 1926 | /* Print out routes update time. */ |
1927 | static void | |
1928 | ripng_vty_out_uptime (struct vty *vty, struct ripng_info *rinfo) | |
1929 | { | |
718e3744 | 1930 | time_t clock; |
1931 | struct tm *tm; | |
1932 | #define TIME_BUF 25 | |
1933 | char timebuf [TIME_BUF]; | |
1934 | struct thread *thread; | |
1935 | ||
718e3744 | 1936 | if ((thread = rinfo->t_timeout) != NULL) |
1937 | { | |
6dfa827b | 1938 | clock = thread_timer_remain_second (thread); |
718e3744 | 1939 | tm = gmtime (&clock); |
1940 | strftime (timebuf, TIME_BUF, "%M:%S", tm); | |
1941 | vty_out (vty, "%5s", timebuf); | |
1942 | } | |
1943 | else if ((thread = rinfo->t_garbage_collect) != NULL) | |
1944 | { | |
6dfa827b | 1945 | clock = thread_timer_remain_second (thread); |
718e3744 | 1946 | tm = gmtime (&clock); |
1947 | strftime (timebuf, TIME_BUF, "%M:%S", tm); | |
1948 | vty_out (vty, "%5s", timebuf); | |
1949 | } | |
1950 | } | |
1951 | ||
6ac29a51 | 1952 | static char * |
a94434b6 | 1953 | ripng_route_subtype_print (struct ripng_info *rinfo) |
1954 | { | |
1955 | static char str[3]; | |
1956 | memset(str, 0, 3); | |
1957 | ||
1958 | if (rinfo->suppress) | |
1959 | strcat(str, "S"); | |
1960 | ||
1961 | switch (rinfo->sub_type) | |
1962 | { | |
1963 | case RIPNG_ROUTE_RTE: | |
1964 | strcat(str, "n"); | |
1965 | break; | |
1966 | case RIPNG_ROUTE_STATIC: | |
1967 | strcat(str, "s"); | |
1968 | break; | |
1969 | case RIPNG_ROUTE_DEFAULT: | |
1970 | strcat(str, "d"); | |
1971 | break; | |
1972 | case RIPNG_ROUTE_REDISTRIBUTE: | |
1973 | strcat(str, "r"); | |
1974 | break; | |
1975 | case RIPNG_ROUTE_INTERFACE: | |
1976 | strcat(str, "i"); | |
1977 | break; | |
1978 | default: | |
1979 | strcat(str, "?"); | |
1980 | break; | |
1981 | } | |
1982 | ||
1983 | return str; | |
1984 | } | |
1985 | ||
718e3744 | 1986 | DEFUN (show_ipv6_ripng, |
1987 | show_ipv6_ripng_cmd, | |
1988 | "show ipv6 ripng", | |
1989 | SHOW_STR | |
8d0f15fd | 1990 | IPV6_STR |
718e3744 | 1991 | "Show RIPng routes\n") |
1992 | { | |
1993 | struct route_node *rp; | |
1994 | struct ripng_info *rinfo; | |
1995 | struct ripng_aggregate *aggregate; | |
1996 | struct prefix_ipv6 *p; | |
1997 | int len; | |
1998 | ||
a94434b6 | 1999 | if (! ripng) |
2000 | return CMD_SUCCESS; | |
2001 | ||
718e3744 | 2002 | /* Header of display. */ |
a94434b6 | 2003 | vty_out (vty, "Codes: R - RIPng, C - connected, S - Static, O - OSPF, B - BGP%s" |
2004 | "Sub-codes:%s" | |
2005 | " (n) - normal, (s) - static, (d) - default, (r) - redistribute,%s" | |
2006 | " (i) - interface, (a/S) - aggregated/Suppressed%s%s" | |
2007 | " Network Next Hop Via Metric Tag Time%s", | |
2008 | VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, | |
718e3744 | 2009 | VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE); |
2010 | ||
2011 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
2012 | { | |
2013 | if ((aggregate = rp->aggregate) != NULL) | |
2014 | { | |
2015 | p = (struct prefix_ipv6 *) &rp->p; | |
2016 | ||
2017 | #ifdef DEBUG | |
a94434b6 | 2018 | len = vty_out (vty, "R(a) %d/%d %s/%d ", |
718e3744 | 2019 | aggregate->count, aggregate->suppress, |
3a2ce6a1 | 2020 | inet6_ntoa (p->prefix), p->prefixlen); |
718e3744 | 2021 | #else |
a94434b6 | 2022 | len = vty_out (vty, "R(a) %s/%d ", |
3a2ce6a1 | 2023 | inet6_ntoa (p->prefix), p->prefixlen); |
718e3744 | 2024 | #endif /* DEBUG */ |
a94434b6 | 2025 | vty_out (vty, "%s", VTY_NEWLINE); |
2026 | vty_out (vty, "%*s", 18, " "); | |
718e3744 | 2027 | |
a94434b6 | 2028 | vty_out (vty, "%*s", 28, " "); |
2029 | vty_out (vty, "self %2d %3d%s", aggregate->metric, | |
718e3744 | 2030 | aggregate->tag, |
2031 | VTY_NEWLINE); | |
2032 | } | |
2033 | ||
2034 | if ((rinfo = rp->info) != NULL) | |
2035 | { | |
2036 | p = (struct prefix_ipv6 *) &rp->p; | |
2037 | ||
2038 | #ifdef DEBUG | |
f52d13cb | 2039 | len = vty_out (vty, "%c(%s) 0/%d %s/%d ", |
2040 | zebra_route_char(rinfo->type), | |
a94434b6 | 2041 | ripng_route_subtype_print(rinfo), |
718e3744 | 2042 | rinfo->suppress, |
3a2ce6a1 | 2043 | inet6_ntoa (p->prefix), p->prefixlen); |
718e3744 | 2044 | #else |
f52d13cb | 2045 | len = vty_out (vty, "%c(%s) %s/%d ", |
2046 | zebra_route_char(rinfo->type), | |
a94434b6 | 2047 | ripng_route_subtype_print(rinfo), |
3a2ce6a1 | 2048 | inet6_ntoa (p->prefix), p->prefixlen); |
718e3744 | 2049 | #endif /* DEBUG */ |
a94434b6 | 2050 | vty_out (vty, "%s", VTY_NEWLINE); |
2051 | vty_out (vty, "%*s", 18, " "); | |
3a2ce6a1 | 2052 | len = vty_out (vty, "%s", inet6_ntoa (rinfo->nexthop)); |
a94434b6 | 2053 | |
2054 | len = 28 - len; | |
718e3744 | 2055 | if (len > 0) |
a94434b6 | 2056 | len = vty_out (vty, "%*s", len, " "); |
718e3744 | 2057 | |
a94434b6 | 2058 | /* from */ |
2059 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
2060 | (rinfo->sub_type == RIPNG_ROUTE_RTE)) | |
2061 | { | |
2062 | len = vty_out (vty, "%s", ifindex2ifname(rinfo->ifindex)); | |
2063 | } else if (rinfo->metric == RIPNG_METRIC_INFINITY) | |
2064 | { | |
2065 | len = vty_out (vty, "kill"); | |
2066 | } else | |
2067 | len = vty_out (vty, "self"); | |
718e3744 | 2068 | |
a94434b6 | 2069 | len = 9 - len; |
718e3744 | 2070 | if (len > 0) |
2071 | vty_out (vty, "%*s", len, " "); | |
2072 | ||
a94434b6 | 2073 | vty_out (vty, " %2d %3d ", |
2074 | rinfo->metric, rinfo->tag); | |
718e3744 | 2075 | |
a94434b6 | 2076 | /* time */ |
2077 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
2078 | (rinfo->sub_type == RIPNG_ROUTE_RTE)) | |
2079 | { | |
2080 | /* RTE from remote RIP routers */ | |
718e3744 | 2081 | ripng_vty_out_uptime (vty, rinfo); |
a94434b6 | 2082 | } else if (rinfo->metric == RIPNG_METRIC_INFINITY) |
2083 | { | |
2084 | /* poisonous reversed routes (gc) */ | |
2085 | ripng_vty_out_uptime (vty, rinfo); | |
2086 | } | |
718e3744 | 2087 | |
2088 | vty_out (vty, "%s", VTY_NEWLINE); | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | return CMD_SUCCESS; | |
2093 | } | |
2094 | ||
a94434b6 | 2095 | DEFUN (show_ipv6_ripng_status, |
2096 | show_ipv6_ripng_status_cmd, | |
2097 | "show ipv6 ripng status", | |
2098 | SHOW_STR | |
8d0f15fd | 2099 | IPV6_STR |
a94434b6 | 2100 | "Show RIPng routes\n" |
2101 | "IPv6 routing protocol process parameters and statistics\n") | |
2102 | { | |
52dc7ee6 | 2103 | struct listnode *node; |
1eb8ef25 | 2104 | struct interface *ifp; |
a94434b6 | 2105 | |
2106 | if (! ripng) | |
2107 | return CMD_SUCCESS; | |
2108 | ||
2109 | vty_out (vty, "Routing Protocol is \"RIPng\"%s", VTY_NEWLINE); | |
2110 | vty_out (vty, " Sending updates every %ld seconds with +/-50%%,", | |
2111 | ripng->update_time); | |
6dfa827b VJ |
2112 | vty_out (vty, " next due in %lu seconds%s", |
2113 | thread_timer_remain_second (ripng->t_update), | |
a94434b6 | 2114 | VTY_NEWLINE); |
2115 | vty_out (vty, " Timeout after %ld seconds,", ripng->timeout_time); | |
2116 | vty_out (vty, " garbage collect after %ld seconds%s", ripng->garbage_time, | |
2117 | VTY_NEWLINE); | |
2118 | ||
2119 | /* Filtering status show. */ | |
2120 | config_show_distribute (vty); | |
2121 | ||
2122 | /* Default metric information. */ | |
2123 | vty_out (vty, " Default redistribution metric is %d%s", | |
2124 | ripng->default_metric, VTY_NEWLINE); | |
2125 | ||
2126 | /* Redistribute information. */ | |
2127 | vty_out (vty, " Redistributing:"); | |
2128 | ripng_redistribute_write (vty, 0); | |
2129 | vty_out (vty, "%s", VTY_NEWLINE); | |
2130 | ||
2131 | vty_out (vty, " Default version control: send version %d,", ripng->version); | |
2132 | vty_out (vty, " receive version %d %s", ripng->version, | |
2133 | VTY_NEWLINE); | |
2134 | ||
2135 | vty_out (vty, " Interface Send Recv%s", VTY_NEWLINE); | |
2136 | ||
1eb8ef25 | 2137 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
a94434b6 | 2138 | { |
2139 | struct ripng_interface *ri; | |
1eb8ef25 | 2140 | |
a94434b6 | 2141 | ri = ifp->info; |
2142 | ||
2143 | if (ri->enable_network || ri->enable_interface) | |
2144 | { | |
2145 | ||
2146 | vty_out (vty, " %-17s%-3d %-3d%s", ifp->name, | |
2147 | ripng->version, | |
2148 | ripng->version, | |
2149 | VTY_NEWLINE); | |
2150 | } | |
2151 | } | |
2152 | ||
2153 | vty_out (vty, " Routing for Networks:%s", VTY_NEWLINE); | |
2154 | ripng_network_write (vty, 0); | |
2155 | ||
2156 | vty_out (vty, " Routing Information Sources:%s", VTY_NEWLINE); | |
2157 | vty_out (vty, " Gateway BadPackets BadRoutes Distance Last Update%s", VTY_NEWLINE); | |
2158 | ripng_peer_display (vty); | |
2159 | ||
2160 | return CMD_SUCCESS; | |
2161 | } | |
2162 | ||
718e3744 | 2163 | DEFUN (router_ripng, |
2164 | router_ripng_cmd, | |
2165 | "router ripng", | |
2166 | "Enable a routing process\n" | |
2167 | "Make RIPng instance command\n") | |
2168 | { | |
2169 | int ret; | |
2170 | ||
2171 | vty->node = RIPNG_NODE; | |
2172 | ||
2173 | if (!ripng) | |
2174 | { | |
2175 | ret = ripng_create (); | |
2176 | ||
2177 | /* Notice to user we couldn't create RIPng. */ | |
2178 | if (ret < 0) | |
2179 | { | |
2180 | zlog_warn ("can't create RIPng"); | |
2181 | return CMD_WARNING; | |
2182 | } | |
2183 | } | |
2184 | ||
2185 | return CMD_SUCCESS; | |
2186 | } | |
2187 | ||
a94434b6 | 2188 | DEFUN (no_router_ripng, |
2189 | no_router_ripng_cmd, | |
2190 | "no router ripng", | |
2191 | NO_STR | |
2192 | "Enable a routing process\n" | |
2193 | "Make RIPng instance command\n") | |
2194 | { | |
2195 | if(ripng) | |
2196 | ripng_clean(); | |
2197 | return CMD_SUCCESS; | |
2198 | } | |
2199 | ||
718e3744 | 2200 | DEFUN (ripng_route, |
2201 | ripng_route_cmd, | |
2202 | "route IPV6ADDR", | |
2203 | "Static route setup\n" | |
2204 | "Set static RIPng route announcement\n") | |
2205 | { | |
2206 | int ret; | |
2207 | struct prefix_ipv6 p; | |
2208 | struct route_node *rp; | |
2209 | ||
2210 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
2211 | if (ret <= 0) | |
2212 | { | |
2213 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2214 | return CMD_WARNING; | |
2215 | } | |
2216 | apply_mask_ipv6 (&p); | |
2217 | ||
2218 | rp = route_node_get (ripng->route, (struct prefix *) &p); | |
2219 | if (rp->info) | |
2220 | { | |
2221 | vty_out (vty, "There is already same static route.%s", VTY_NEWLINE); | |
2222 | route_unlock_node (rp); | |
2223 | return CMD_WARNING; | |
2224 | } | |
2225 | rp->info = (void *)1; | |
2226 | ||
a94434b6 | 2227 | ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0, NULL); |
718e3744 | 2228 | |
2229 | return CMD_SUCCESS; | |
2230 | } | |
2231 | ||
2232 | DEFUN (no_ripng_route, | |
2233 | no_ripng_route_cmd, | |
2234 | "no route IPV6ADDR", | |
2235 | NO_STR | |
2236 | "Static route setup\n" | |
2237 | "Delete static RIPng route announcement\n") | |
2238 | { | |
2239 | int ret; | |
2240 | struct prefix_ipv6 p; | |
2241 | struct route_node *rp; | |
2242 | ||
2243 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
2244 | if (ret <= 0) | |
2245 | { | |
2246 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2247 | return CMD_WARNING; | |
2248 | } | |
2249 | apply_mask_ipv6 (&p); | |
2250 | ||
2251 | rp = route_node_lookup (ripng->route, (struct prefix *) &p); | |
2252 | if (! rp) | |
2253 | { | |
2254 | vty_out (vty, "Can't find static route.%s", VTY_NEWLINE); | |
2255 | return CMD_WARNING; | |
2256 | } | |
2257 | ||
2258 | ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); | |
2259 | route_unlock_node (rp); | |
2260 | ||
2261 | rp->info = NULL; | |
2262 | route_unlock_node (rp); | |
2263 | ||
2264 | return CMD_SUCCESS; | |
2265 | } | |
2266 | ||
2267 | DEFUN (ripng_aggregate_address, | |
2268 | ripng_aggregate_address_cmd, | |
2269 | "aggregate-address X:X::X:X/M", | |
2270 | "Set aggregate RIPng route announcement\n" | |
2271 | "Aggregate network\n") | |
2272 | { | |
2273 | int ret; | |
2274 | struct prefix p; | |
2275 | struct route_node *node; | |
2276 | ||
2277 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
2278 | if (ret <= 0) | |
2279 | { | |
2280 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2281 | return CMD_WARNING; | |
2282 | } | |
2283 | ||
2284 | /* Check aggregate alredy exist or not. */ | |
2285 | node = route_node_get (ripng->aggregate, &p); | |
2286 | if (node->info) | |
2287 | { | |
2288 | vty_out (vty, "There is already same aggregate route.%s", VTY_NEWLINE); | |
2289 | route_unlock_node (node); | |
2290 | return CMD_WARNING; | |
2291 | } | |
2292 | node->info = (void *)1; | |
2293 | ||
2294 | ripng_aggregate_add (&p); | |
2295 | ||
2296 | return CMD_SUCCESS; | |
2297 | } | |
2298 | ||
2299 | DEFUN (no_ripng_aggregate_address, | |
2300 | no_ripng_aggregate_address_cmd, | |
2301 | "no aggregate-address X:X::X:X/M", | |
2302 | NO_STR | |
2303 | "Delete aggregate RIPng route announcement\n" | |
2304 | "Aggregate network") | |
2305 | { | |
2306 | int ret; | |
2307 | struct prefix p; | |
2308 | struct route_node *rn; | |
2309 | ||
2310 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *) &p); | |
2311 | if (ret <= 0) | |
2312 | { | |
2313 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2314 | return CMD_WARNING; | |
2315 | } | |
2316 | ||
2317 | rn = route_node_lookup (ripng->aggregate, &p); | |
2318 | if (! rn) | |
2319 | { | |
2320 | vty_out (vty, "Can't find aggregate route.%s", VTY_NEWLINE); | |
2321 | return CMD_WARNING; | |
2322 | } | |
2323 | route_unlock_node (rn); | |
2324 | rn->info = NULL; | |
2325 | route_unlock_node (rn); | |
2326 | ||
2327 | ripng_aggregate_delete (&p); | |
2328 | ||
2329 | return CMD_SUCCESS; | |
2330 | } | |
2331 | ||
2332 | DEFUN (ripng_default_metric, | |
2333 | ripng_default_metric_cmd, | |
2334 | "default-metric <1-16>", | |
2335 | "Set a metric of redistribute routes\n" | |
2336 | "Default metric\n") | |
2337 | { | |
2338 | if (ripng) | |
2339 | { | |
2340 | ripng->default_metric = atoi (argv[0]); | |
2341 | } | |
2342 | return CMD_SUCCESS; | |
2343 | } | |
2344 | ||
2345 | DEFUN (no_ripng_default_metric, | |
2346 | no_ripng_default_metric_cmd, | |
2347 | "no default-metric", | |
2348 | NO_STR | |
2349 | "Set a metric of redistribute routes\n" | |
2350 | "Default metric\n") | |
2351 | { | |
2352 | if (ripng) | |
2353 | { | |
2354 | ripng->default_metric = RIPNG_DEFAULT_METRIC_DEFAULT; | |
2355 | } | |
2356 | return CMD_SUCCESS; | |
2357 | } | |
2358 | ||
2359 | ALIAS (no_ripng_default_metric, | |
2360 | no_ripng_default_metric_val_cmd, | |
2361 | "no default-metric <1-16>", | |
2362 | NO_STR | |
2363 | "Set a metric of redistribute routes\n" | |
2364 | "Default metric\n") | |
2365 | ||
2366 | #if 0 | |
2367 | /* RIPng update timer setup. */ | |
2368 | DEFUN (ripng_update_timer, | |
2369 | ripng_update_timer_cmd, | |
2370 | "update-timer SECOND", | |
2371 | "Set RIPng update timer in seconds\n" | |
2372 | "Seconds\n") | |
2373 | { | |
2374 | unsigned long update; | |
2375 | char *endptr = NULL; | |
2376 | ||
2377 | update = strtoul (argv[0], &endptr, 10); | |
2378 | if (update == ULONG_MAX || *endptr != '\0') | |
2379 | { | |
2380 | vty_out (vty, "update timer value error%s", VTY_NEWLINE); | |
2381 | return CMD_WARNING; | |
2382 | } | |
2383 | ||
2384 | ripng->update_time = update; | |
2385 | ||
2386 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2387 | return CMD_SUCCESS; | |
2388 | } | |
2389 | ||
2390 | DEFUN (no_ripng_update_timer, | |
2391 | no_ripng_update_timer_cmd, | |
2392 | "no update-timer SECOND", | |
2393 | NO_STR | |
2394 | "Unset RIPng update timer in seconds\n" | |
2395 | "Seconds\n") | |
2396 | { | |
2397 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2398 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2399 | return CMD_SUCCESS; | |
2400 | } | |
2401 | ||
2402 | /* RIPng timeout timer setup. */ | |
2403 | DEFUN (ripng_timeout_timer, | |
2404 | ripng_timeout_timer_cmd, | |
2405 | "timeout-timer SECOND", | |
2406 | "Set RIPng timeout timer in seconds\n" | |
2407 | "Seconds\n") | |
2408 | { | |
2409 | unsigned long timeout; | |
2410 | char *endptr = NULL; | |
2411 | ||
2412 | timeout = strtoul (argv[0], &endptr, 10); | |
2413 | if (timeout == ULONG_MAX || *endptr != '\0') | |
2414 | { | |
2415 | vty_out (vty, "timeout timer value error%s", VTY_NEWLINE); | |
2416 | return CMD_WARNING; | |
2417 | } | |
2418 | ||
2419 | ripng->timeout_time = timeout; | |
2420 | ||
2421 | return CMD_SUCCESS; | |
2422 | } | |
2423 | ||
2424 | DEFUN (no_ripng_timeout_timer, | |
2425 | no_ripng_timeout_timer_cmd, | |
2426 | "no timeout-timer SECOND", | |
2427 | NO_STR | |
2428 | "Unset RIPng timeout timer in seconds\n" | |
2429 | "Seconds\n") | |
2430 | { | |
2431 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2432 | return CMD_SUCCESS; | |
2433 | } | |
2434 | ||
2435 | /* RIPng garbage timer setup. */ | |
2436 | DEFUN (ripng_garbage_timer, | |
2437 | ripng_garbage_timer_cmd, | |
2438 | "garbage-timer SECOND", | |
2439 | "Set RIPng garbage timer in seconds\n" | |
2440 | "Seconds\n") | |
2441 | { | |
2442 | unsigned long garbage; | |
2443 | char *endptr = NULL; | |
2444 | ||
2445 | garbage = strtoul (argv[0], &endptr, 10); | |
2446 | if (garbage == ULONG_MAX || *endptr != '\0') | |
2447 | { | |
2448 | vty_out (vty, "garbage timer value error%s", VTY_NEWLINE); | |
2449 | return CMD_WARNING; | |
2450 | } | |
2451 | ||
2452 | ripng->garbage_time = garbage; | |
2453 | ||
2454 | return CMD_SUCCESS; | |
2455 | } | |
2456 | ||
2457 | DEFUN (no_ripng_garbage_timer, | |
2458 | no_ripng_garbage_timer_cmd, | |
2459 | "no garbage-timer SECOND", | |
2460 | NO_STR | |
2461 | "Unset RIPng garbage timer in seconds\n" | |
2462 | "Seconds\n") | |
2463 | { | |
2464 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2465 | return CMD_SUCCESS; | |
2466 | } | |
2467 | #endif /* 0 */ | |
2468 | ||
2469 | DEFUN (ripng_timers, | |
2470 | ripng_timers_cmd, | |
2471 | "timers basic <0-65535> <0-65535> <0-65535>", | |
2472 | "RIPng timers setup\n" | |
2473 | "Basic timer\n" | |
2474 | "Routing table update timer value in second. Default is 30.\n" | |
2475 | "Routing information timeout timer. Default is 180.\n" | |
2476 | "Garbage collection timer. Default is 120.\n") | |
2477 | { | |
2478 | unsigned long update; | |
2479 | unsigned long timeout; | |
2480 | unsigned long garbage; | |
2481 | char *endptr = NULL; | |
2482 | ||
2483 | update = strtoul (argv[0], &endptr, 10); | |
2484 | if (update == ULONG_MAX || *endptr != '\0') | |
2485 | { | |
2486 | vty_out (vty, "update timer value error%s", VTY_NEWLINE); | |
2487 | return CMD_WARNING; | |
2488 | } | |
2489 | ||
2490 | timeout = strtoul (argv[1], &endptr, 10); | |
2491 | if (timeout == ULONG_MAX || *endptr != '\0') | |
2492 | { | |
2493 | vty_out (vty, "timeout timer value error%s", VTY_NEWLINE); | |
2494 | return CMD_WARNING; | |
2495 | } | |
2496 | ||
2497 | garbage = strtoul (argv[2], &endptr, 10); | |
2498 | if (garbage == ULONG_MAX || *endptr != '\0') | |
2499 | { | |
2500 | vty_out (vty, "garbage timer value error%s", VTY_NEWLINE); | |
2501 | return CMD_WARNING; | |
2502 | } | |
2503 | ||
2504 | /* Set each timer value. */ | |
2505 | ripng->update_time = update; | |
2506 | ripng->timeout_time = timeout; | |
2507 | ripng->garbage_time = garbage; | |
2508 | ||
2509 | /* Reset update timer thread. */ | |
2510 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2511 | ||
2512 | return CMD_SUCCESS; | |
2513 | } | |
2514 | ||
2515 | DEFUN (no_ripng_timers, | |
2516 | no_ripng_timers_cmd, | |
2517 | "no timers basic", | |
2518 | NO_STR | |
2519 | "RIPng timers setup\n" | |
2520 | "Basic timer\n") | |
2521 | { | |
2522 | /* Set each timer value to the default. */ | |
2523 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2524 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2525 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2526 | ||
2527 | /* Reset update timer thread. */ | |
2528 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2529 | ||
2530 | return CMD_SUCCESS; | |
2531 | } | |
2532 | ||
a94434b6 | 2533 | ALIAS (no_ripng_timers, |
2534 | no_ripng_timers_val_cmd, | |
2535 | "no timers basic <0-65535> <0-65535> <0-65535>", | |
2536 | NO_STR | |
2537 | "RIPng timers setup\n" | |
2538 | "Basic timer\n" | |
2539 | "Routing table update timer value in second. Default is 30.\n" | |
2540 | "Routing information timeout timer. Default is 180.\n" | |
2541 | "Garbage collection timer. Default is 120.\n") | |
718e3744 | 2542 | |
2543 | DEFUN (show_ipv6_protocols, show_ipv6_protocols_cmd, | |
2544 | "show ipv6 protocols", | |
2545 | SHOW_STR | |
8d0f15fd | 2546 | IPV6_STR |
718e3744 | 2547 | "Routing protocol information") |
2548 | { | |
2549 | if (! ripng) | |
2550 | return CMD_SUCCESS; | |
2551 | ||
2552 | vty_out (vty, "Routing Protocol is \"ripng\"%s", VTY_NEWLINE); | |
2553 | ||
2554 | vty_out (vty, "Sending updates every %ld seconds, next due in %d seconds%s", | |
2555 | ripng->update_time, 0, | |
2556 | VTY_NEWLINE); | |
2557 | ||
2558 | vty_out (vty, "Timerout after %ld seconds, garbage correct %ld%s", | |
2559 | ripng->timeout_time, | |
2560 | ripng->garbage_time, | |
2561 | VTY_NEWLINE); | |
2562 | ||
2563 | vty_out (vty, "Outgoing update filter list for all interfaces is not set"); | |
2564 | vty_out (vty, "Incoming update filter list for all interfaces is not set"); | |
2565 | ||
2566 | return CMD_SUCCESS; | |
2567 | } | |
2568 | ||
2569 | /* Please be carefull to use this command. */ | |
a2c62831 | 2570 | DEFUN (ripng_default_information_originate, |
2571 | ripng_default_information_originate_cmd, | |
718e3744 | 2572 | "default-information originate", |
2573 | "Default route information\n" | |
2574 | "Distribute default route\n") | |
2575 | { | |
2576 | struct prefix_ipv6 p; | |
2577 | ||
a94434b6 | 2578 | if (! ripng ->default_information) { |
2579 | ripng->default_information = 1; | |
718e3744 | 2580 | |
a94434b6 | 2581 | str2prefix_ipv6 ("::/0", &p); |
2582 | ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_DEFAULT, &p, 0, NULL); | |
2583 | } | |
718e3744 | 2584 | |
2585 | return CMD_SUCCESS; | |
2586 | } | |
2587 | ||
a2c62831 | 2588 | DEFUN (no_ripng_default_information_originate, |
2589 | no_ripng_default_information_originate_cmd, | |
718e3744 | 2590 | "no default-information originate", |
2591 | NO_STR | |
2592 | "Default route information\n" | |
2593 | "Distribute default route\n") | |
2594 | { | |
2595 | struct prefix_ipv6 p; | |
2596 | ||
a94434b6 | 2597 | if (ripng->default_information) { |
2598 | ripng->default_information = 0; | |
718e3744 | 2599 | |
a94434b6 | 2600 | str2prefix_ipv6 ("::/0", &p); |
2601 | ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_DEFAULT, &p, 0); | |
2602 | } | |
718e3744 | 2603 | |
2604 | return CMD_SUCCESS; | |
2605 | } | |
2606 | ||
2607 | /* RIPng configuration write function. */ | |
6ac29a51 | 2608 | static int |
718e3744 | 2609 | ripng_config_write (struct vty *vty) |
2610 | { | |
a94434b6 | 2611 | int ripng_network_write (struct vty *, int); |
2612 | void ripng_redistribute_write (struct vty *, int); | |
718e3744 | 2613 | int write = 0; |
2614 | struct route_node *rp; | |
2615 | ||
2616 | if (ripng) | |
2617 | { | |
2618 | ||
2619 | /* RIPng router. */ | |
2620 | vty_out (vty, "router ripng%s", VTY_NEWLINE); | |
2621 | ||
2622 | if (ripng->default_information) | |
2623 | vty_out (vty, " default-information originate%s", VTY_NEWLINE); | |
2624 | ||
a94434b6 | 2625 | ripng_network_write (vty, 1); |
718e3744 | 2626 | |
2627 | /* RIPng default metric configuration */ | |
2628 | if (ripng->default_metric != RIPNG_DEFAULT_METRIC_DEFAULT) | |
2629 | vty_out (vty, " default-metric %d%s", | |
2630 | ripng->default_metric, VTY_NEWLINE); | |
2631 | ||
a94434b6 | 2632 | ripng_redistribute_write (vty, 1); |
2633 | ||
2634 | /* RIP offset-list configuration. */ | |
2635 | config_write_ripng_offset_list (vty); | |
718e3744 | 2636 | |
2637 | /* RIPng aggregate routes. */ | |
2638 | for (rp = route_top (ripng->aggregate); rp; rp = route_next (rp)) | |
2639 | if (rp->info != NULL) | |
2640 | vty_out (vty, " aggregate-address %s/%d%s", | |
3a2ce6a1 | 2641 | inet6_ntoa (rp->p.u.prefix6), |
718e3744 | 2642 | rp->p.prefixlen, |
2643 | ||
2644 | VTY_NEWLINE); | |
2645 | ||
2646 | /* RIPng static routes. */ | |
2647 | for (rp = route_top (ripng->route); rp; rp = route_next (rp)) | |
2648 | if (rp->info != NULL) | |
3a2ce6a1 | 2649 | vty_out (vty, " route %s/%d%s", inet6_ntoa (rp->p.u.prefix6), |
718e3744 | 2650 | rp->p.prefixlen, |
2651 | VTY_NEWLINE); | |
2652 | ||
2653 | /* RIPng timers configuration. */ | |
2654 | if (ripng->update_time != RIPNG_UPDATE_TIMER_DEFAULT || | |
2655 | ripng->timeout_time != RIPNG_TIMEOUT_TIMER_DEFAULT || | |
2656 | ripng->garbage_time != RIPNG_GARBAGE_TIMER_DEFAULT) | |
2657 | { | |
2658 | vty_out (vty, " timers basic %ld %ld %ld%s", | |
2659 | ripng->update_time, | |
2660 | ripng->timeout_time, | |
2661 | ripng->garbage_time, | |
2662 | VTY_NEWLINE); | |
2663 | } | |
2664 | #if 0 | |
2665 | if (ripng->update_time != RIPNG_UPDATE_TIMER_DEFAULT) | |
2666 | vty_out (vty, " update-timer %d%s", ripng->update_time, | |
2667 | VTY_NEWLINE); | |
2668 | if (ripng->timeout_time != RIPNG_TIMEOUT_TIMER_DEFAULT) | |
2669 | vty_out (vty, " timeout-timer %d%s", ripng->timeout_time, | |
2670 | VTY_NEWLINE); | |
2671 | if (ripng->garbage_time != RIPNG_GARBAGE_TIMER_DEFAULT) | |
2672 | vty_out (vty, " garbage-timer %d%s", ripng->garbage_time, | |
2673 | VTY_NEWLINE); | |
2674 | #endif /* 0 */ | |
2675 | ||
2676 | write += config_write_distribute (vty); | |
2677 | ||
2678 | write += config_write_if_rmap (vty); | |
2679 | ||
2680 | write++; | |
2681 | } | |
2682 | return write; | |
2683 | } | |
2684 | ||
2685 | /* RIPng node structure. */ | |
2686 | struct cmd_node cmd_ripng_node = | |
2687 | { | |
2688 | RIPNG_NODE, | |
2689 | "%s(config-router)# ", | |
2690 | 1, | |
2691 | }; | |
2692 | ||
6ac29a51 | 2693 | static void |
718e3744 | 2694 | ripng_distribute_update (struct distribute *dist) |
2695 | { | |
2696 | struct interface *ifp; | |
2697 | struct ripng_interface *ri; | |
2698 | struct access_list *alist; | |
2699 | struct prefix_list *plist; | |
2700 | ||
2701 | if (! dist->ifname) | |
2702 | return; | |
2703 | ||
2704 | ifp = if_lookup_by_name (dist->ifname); | |
2705 | if (ifp == NULL) | |
2706 | return; | |
2707 | ||
2708 | ri = ifp->info; | |
2709 | ||
2710 | if (dist->list[DISTRIBUTE_IN]) | |
2711 | { | |
2712 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]); | |
2713 | if (alist) | |
2714 | ri->list[RIPNG_FILTER_IN] = alist; | |
2715 | else | |
2716 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2717 | } | |
2718 | else | |
2719 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2720 | ||
2721 | if (dist->list[DISTRIBUTE_OUT]) | |
2722 | { | |
2723 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]); | |
2724 | if (alist) | |
2725 | ri->list[RIPNG_FILTER_OUT] = alist; | |
2726 | else | |
2727 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2728 | } | |
2729 | else | |
2730 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2731 | ||
2732 | if (dist->prefix[DISTRIBUTE_IN]) | |
2733 | { | |
2734 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]); | |
2735 | if (plist) | |
2736 | ri->prefix[RIPNG_FILTER_IN] = plist; | |
2737 | else | |
2738 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2739 | } | |
2740 | else | |
2741 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2742 | ||
2743 | if (dist->prefix[DISTRIBUTE_OUT]) | |
2744 | { | |
2745 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]); | |
2746 | if (plist) | |
2747 | ri->prefix[RIPNG_FILTER_OUT] = plist; | |
2748 | else | |
2749 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2750 | } | |
2751 | else | |
2752 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2753 | } | |
a94434b6 | 2754 | |
718e3744 | 2755 | void |
2756 | ripng_distribute_update_interface (struct interface *ifp) | |
2757 | { | |
2758 | struct distribute *dist; | |
2759 | ||
2760 | dist = distribute_lookup (ifp->name); | |
2761 | if (dist) | |
2762 | ripng_distribute_update (dist); | |
2763 | } | |
2764 | ||
2765 | /* Update all interface's distribute list. */ | |
6ac29a51 | 2766 | static void |
c9e52be3 | 2767 | ripng_distribute_update_all (struct prefix_list *notused) |
718e3744 | 2768 | { |
2769 | struct interface *ifp; | |
52dc7ee6 | 2770 | struct listnode *node; |
718e3744 | 2771 | |
1eb8ef25 | 2772 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
2773 | ripng_distribute_update_interface (ifp); | |
718e3744 | 2774 | } |
c9e52be3 | 2775 | |
6ac29a51 | 2776 | static void |
c9e52be3 | 2777 | ripng_distribute_update_all_wrapper (struct access_list *notused) |
2778 | { | |
2779 | ripng_distribute_update_all(NULL); | |
2780 | } | |
a94434b6 | 2781 | \f |
2782 | /* delete all the added ripng routes. */ | |
2783 | void | |
2784 | ripng_clean() | |
2785 | { | |
2786 | int i; | |
2787 | struct route_node *rp; | |
2788 | struct ripng_info *rinfo; | |
2789 | ||
2790 | if (ripng) { | |
2791 | /* Clear RIPng routes */ | |
2792 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) { | |
2793 | if ((rinfo = rp->info) != NULL) { | |
2794 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
2795 | (rinfo->sub_type == RIPNG_ROUTE_RTE)) | |
2796 | ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, | |
2797 | &rinfo->nexthop, rinfo->metric); | |
2798 | ||
2799 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
2800 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
2801 | ||
2802 | rp->info = NULL; | |
2803 | route_unlock_node (rp); | |
2804 | ||
2805 | ripng_info_free(rinfo); | |
2806 | } | |
2807 | } | |
2808 | ||
2809 | /* Cancel the RIPng timers */ | |
2810 | RIPNG_TIMER_OFF (ripng->t_update); | |
2811 | RIPNG_TIMER_OFF (ripng->t_triggered_update); | |
2812 | RIPNG_TIMER_OFF (ripng->t_triggered_interval); | |
2813 | ||
2814 | /* Cancel the read thread */ | |
2815 | if (ripng->t_read) { | |
2816 | thread_cancel (ripng->t_read); | |
2817 | ripng->t_read = NULL; | |
2818 | } | |
2819 | ||
2820 | /* Close the RIPng socket */ | |
2821 | if (ripng->sock >= 0) { | |
2822 | close(ripng->sock); | |
2823 | ripng->sock = -1; | |
2824 | } | |
2825 | ||
2826 | /* Static RIPng route configuration. */ | |
2827 | for (rp = route_top (ripng->route); rp; rp = route_next (rp)) | |
2828 | if (rp->info) { | |
2829 | rp->info = NULL; | |
2830 | route_unlock_node (rp); | |
2831 | } | |
2832 | ||
2833 | /* RIPng aggregated prefixes */ | |
2834 | for (rp = route_top (ripng->aggregate); rp; rp = route_next (rp)) | |
2835 | if (rp->info) { | |
2836 | rp->info = NULL; | |
2837 | route_unlock_node (rp); | |
2838 | } | |
2839 | ||
2840 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
2841 | if (ripng->route_map[i].name) | |
2842 | free (ripng->route_map[i].name); | |
2843 | ||
2844 | XFREE (MTYPE_ROUTE_TABLE, ripng->table); | |
2845 | XFREE (MTYPE_ROUTE_TABLE, ripng->route); | |
2846 | XFREE (MTYPE_ROUTE_TABLE, ripng->aggregate); | |
2847 | ||
2848 | XFREE (MTYPE_RIPNG, ripng); | |
2849 | ripng = NULL; | |
2850 | } /* if (ripng) */ | |
2851 | ||
2852 | ripng_clean_network(); | |
2853 | ripng_passive_interface_clean (); | |
2854 | ripng_offset_clean (); | |
2855 | ripng_interface_clean (); | |
2856 | ripng_redistribute_clean (); | |
2857 | } | |
2858 | ||
2859 | /* Reset all values to the default settings. */ | |
2860 | void | |
2861 | ripng_reset () | |
2862 | { | |
2863 | /* Call ripd related reset functions. */ | |
2864 | ripng_debug_reset (); | |
2865 | ripng_route_map_reset (); | |
2866 | ||
2867 | /* Call library reset functions. */ | |
2868 | vty_reset (); | |
2869 | access_list_reset (); | |
2870 | prefix_list_reset (); | |
2871 | ||
2872 | distribute_list_reset (); | |
2873 | ||
2874 | ripng_interface_reset (); | |
2875 | ||
2876 | ripng_zclient_reset (); | |
2877 | } | |
718e3744 | 2878 | |
6ac29a51 | 2879 | static void |
718e3744 | 2880 | ripng_if_rmap_update (struct if_rmap *if_rmap) |
2881 | { | |
2882 | struct interface *ifp; | |
2883 | struct ripng_interface *ri; | |
2884 | struct route_map *rmap; | |
2885 | ||
2886 | ifp = if_lookup_by_name (if_rmap->ifname); | |
2887 | if (ifp == NULL) | |
2888 | return; | |
2889 | ||
2890 | ri = ifp->info; | |
2891 | ||
2892 | if (if_rmap->routemap[IF_RMAP_IN]) | |
2893 | { | |
2894 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_IN]); | |
2895 | if (rmap) | |
2896 | ri->routemap[IF_RMAP_IN] = rmap; | |
2897 | else | |
2898 | ri->routemap[IF_RMAP_IN] = NULL; | |
2899 | } | |
2900 | else | |
2901 | ri->routemap[RIPNG_FILTER_IN] = NULL; | |
2902 | ||
2903 | if (if_rmap->routemap[IF_RMAP_OUT]) | |
2904 | { | |
2905 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_OUT]); | |
2906 | if (rmap) | |
2907 | ri->routemap[IF_RMAP_OUT] = rmap; | |
2908 | else | |
2909 | ri->routemap[IF_RMAP_OUT] = NULL; | |
2910 | } | |
2911 | else | |
2912 | ri->routemap[RIPNG_FILTER_OUT] = NULL; | |
2913 | } | |
2914 | ||
2915 | void | |
2916 | ripng_if_rmap_update_interface (struct interface *ifp) | |
2917 | { | |
2918 | struct if_rmap *if_rmap; | |
2919 | ||
2920 | if_rmap = if_rmap_lookup (ifp->name); | |
2921 | if (if_rmap) | |
2922 | ripng_if_rmap_update (if_rmap); | |
2923 | } | |
2924 | ||
6ac29a51 | 2925 | static void |
718e3744 | 2926 | ripng_routemap_update_redistribute (void) |
2927 | { | |
2928 | int i; | |
2929 | ||
2930 | if (ripng) | |
2931 | { | |
2932 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
2933 | { | |
2934 | if (ripng->route_map[i].name) | |
2935 | ripng->route_map[i].map = | |
2936 | route_map_lookup_by_name (ripng->route_map[i].name); | |
2937 | } | |
2938 | } | |
2939 | } | |
2940 | ||
6ac29a51 | 2941 | static void |
98b718a9 | 2942 | ripng_routemap_update (const char *unused) |
718e3744 | 2943 | { |
2944 | struct interface *ifp; | |
52dc7ee6 | 2945 | struct listnode *node; |
718e3744 | 2946 | |
1eb8ef25 | 2947 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
2948 | ripng_if_rmap_update_interface (ifp); | |
718e3744 | 2949 | |
2950 | ripng_routemap_update_redistribute (); | |
2951 | } | |
2952 | ||
2953 | /* Initialize ripng structure and set commands. */ | |
2954 | void | |
2955 | ripng_init () | |
2956 | { | |
2957 | /* Randomize. */ | |
2958 | srand (time (NULL)); | |
2959 | ||
2960 | /* Install RIPNG_NODE. */ | |
2961 | install_node (&cmd_ripng_node, ripng_config_write); | |
2962 | ||
2963 | /* Install ripng commands. */ | |
2964 | install_element (VIEW_NODE, &show_ipv6_ripng_cmd); | |
a94434b6 | 2965 | install_element (VIEW_NODE, &show_ipv6_ripng_status_cmd); |
718e3744 | 2966 | |
2967 | install_element (ENABLE_NODE, &show_ipv6_ripng_cmd); | |
a94434b6 | 2968 | install_element (ENABLE_NODE, &show_ipv6_ripng_status_cmd); |
718e3744 | 2969 | |
2970 | install_element (CONFIG_NODE, &router_ripng_cmd); | |
a94434b6 | 2971 | install_element (CONFIG_NODE, &no_router_ripng_cmd); |
718e3744 | 2972 | |
2973 | install_default (RIPNG_NODE); | |
2974 | install_element (RIPNG_NODE, &ripng_route_cmd); | |
2975 | install_element (RIPNG_NODE, &no_ripng_route_cmd); | |
2976 | install_element (RIPNG_NODE, &ripng_aggregate_address_cmd); | |
2977 | install_element (RIPNG_NODE, &no_ripng_aggregate_address_cmd); | |
2978 | ||
2979 | install_element (RIPNG_NODE, &ripng_default_metric_cmd); | |
2980 | install_element (RIPNG_NODE, &no_ripng_default_metric_cmd); | |
2981 | install_element (RIPNG_NODE, &no_ripng_default_metric_val_cmd); | |
2982 | ||
2983 | install_element (RIPNG_NODE, &ripng_timers_cmd); | |
2984 | install_element (RIPNG_NODE, &no_ripng_timers_cmd); | |
a94434b6 | 2985 | install_element (RIPNG_NODE, &no_ripng_timers_val_cmd); |
718e3744 | 2986 | #if 0 |
2987 | install_element (RIPNG_NODE, &ripng_update_timer_cmd); | |
2988 | install_element (RIPNG_NODE, &no_ripng_update_timer_cmd); | |
2989 | install_element (RIPNG_NODE, &ripng_timeout_timer_cmd); | |
2990 | install_element (RIPNG_NODE, &no_ripng_timeout_timer_cmd); | |
2991 | install_element (RIPNG_NODE, &ripng_garbage_timer_cmd); | |
2992 | install_element (RIPNG_NODE, &no_ripng_garbage_timer_cmd); | |
2993 | #endif /* 0 */ | |
2994 | ||
a2c62831 | 2995 | install_element (RIPNG_NODE, &ripng_default_information_originate_cmd); |
2996 | install_element (RIPNG_NODE, &no_ripng_default_information_originate_cmd); | |
718e3744 | 2997 | |
2998 | ripng_if_init (); | |
2999 | ripng_debug_init (); | |
3000 | ||
3001 | /* Access list install. */ | |
3002 | access_list_init (); | |
c9e52be3 | 3003 | access_list_add_hook (ripng_distribute_update_all_wrapper); |
3004 | access_list_delete_hook (ripng_distribute_update_all_wrapper); | |
718e3744 | 3005 | |
3006 | /* Prefix list initialize.*/ | |
3007 | prefix_list_init (); | |
3008 | prefix_list_add_hook (ripng_distribute_update_all); | |
3009 | prefix_list_delete_hook (ripng_distribute_update_all); | |
3010 | ||
3011 | /* Distribute list install. */ | |
3012 | distribute_list_init (RIPNG_NODE); | |
3013 | distribute_list_add_hook (ripng_distribute_update); | |
3014 | distribute_list_delete_hook (ripng_distribute_update); | |
3015 | ||
3016 | /* Route-map for interface. */ | |
3017 | ripng_route_map_init (); | |
a94434b6 | 3018 | ripng_offset_init (); |
3019 | ||
718e3744 | 3020 | route_map_add_hook (ripng_routemap_update); |
3021 | route_map_delete_hook (ripng_routemap_update); | |
3022 | ||
0750d21f | 3023 | if_rmap_init (RIPNG_NODE); |
718e3744 | 3024 | if_rmap_hook_add (ripng_if_rmap_update); |
3025 | if_rmap_hook_delete (ripng_if_rmap_update); | |
3026 | } |