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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; | |
6d0732c8 SH |
120 | #ifdef IPTOS_PREC_INTERNETCONTROL |
121 | ret = setsockopt_ipv6_tclass (sock, IPTOS_PREC_INTERNETCONTROL); | |
122 | if (ret < 0) | |
123 | return ret; | |
124 | #endif | |
718e3744 | 125 | ret = setsockopt_ipv6_multicast_hops (sock, 255); |
126 | if (ret < 0) | |
127 | return ret; | |
128 | ret = setsockopt_ipv6_multicast_loop (sock, 0); | |
129 | if (ret < 0) | |
130 | return ret; | |
131 | ret = setsockopt_ipv6_hoplimit (sock, 1); | |
132 | if (ret < 0) | |
133 | return ret; | |
134 | ||
135 | memset (&ripaddr, 0, sizeof (ripaddr)); | |
136 | ripaddr.sin6_family = AF_INET6; | |
137 | #ifdef SIN6_LEN | |
138 | ripaddr.sin6_len = sizeof (struct sockaddr_in6); | |
139 | #endif /* SIN6_LEN */ | |
140 | ripaddr.sin6_port = htons (RIPNG_PORT_DEFAULT); | |
141 | ||
27d47aa7 | 142 | if (ripngd_privs.change (ZPRIVS_RAISE)) |
143 | zlog_err ("ripng_make_socket: could not raise privs"); | |
144 | ||
718e3744 | 145 | ret = bind (sock, (struct sockaddr *) &ripaddr, sizeof (ripaddr)); |
146 | if (ret < 0) | |
27d47aa7 | 147 | { |
6099b3b5 | 148 | zlog (NULL, LOG_ERR, "Can't bind ripng socket: %s.", safe_strerror (errno)); |
27d47aa7 | 149 | if (ripngd_privs.change (ZPRIVS_LOWER)) |
150 | zlog_err ("ripng_make_socket: could not lower privs"); | |
151 | return ret; | |
152 | } | |
153 | if (ripngd_privs.change (ZPRIVS_LOWER)) | |
154 | zlog_err ("ripng_make_socket: could not lower privs"); | |
718e3744 | 155 | return sock; |
156 | } | |
157 | ||
158 | /* Send RIPng packet. */ | |
159 | int | |
160 | ripng_send_packet (caddr_t buf, int bufsize, struct sockaddr_in6 *to, | |
161 | struct interface *ifp) | |
162 | { | |
163 | int ret; | |
164 | struct msghdr msg; | |
165 | struct iovec iov; | |
166 | struct cmsghdr *cmsgptr; | |
167 | char adata [256]; | |
168 | struct in6_pktinfo *pkt; | |
169 | struct sockaddr_in6 addr; | |
170 | ||
a94434b6 | 171 | if (IS_RIPNG_DEBUG_SEND) { |
172 | if (to) | |
3a2ce6a1 | 173 | zlog_debug ("send to %s", inet6_ntoa (to->sin6_addr)); |
c6106812 | 174 | zlog_debug (" send interface %s", ifp->name); |
175 | zlog_debug (" send packet size %d", bufsize); | |
a94434b6 | 176 | } |
718e3744 | 177 | |
178 | memset (&addr, 0, sizeof (struct sockaddr_in6)); | |
179 | addr.sin6_family = AF_INET6; | |
180 | #ifdef SIN6_LEN | |
181 | addr.sin6_len = sizeof (struct sockaddr_in6); | |
182 | #endif /* SIN6_LEN */ | |
183 | addr.sin6_flowinfo = htonl (RIPNG_PRIORITY_DEFAULT); | |
184 | ||
185 | /* When destination is specified. */ | |
186 | if (to != NULL) | |
187 | { | |
188 | addr.sin6_addr = to->sin6_addr; | |
189 | addr.sin6_port = to->sin6_port; | |
190 | } | |
191 | else | |
192 | { | |
193 | inet_pton(AF_INET6, RIPNG_GROUP, &addr.sin6_addr); | |
194 | addr.sin6_port = htons (RIPNG_PORT_DEFAULT); | |
195 | } | |
196 | ||
197 | msg.msg_name = (void *) &addr; | |
198 | msg.msg_namelen = sizeof (struct sockaddr_in6); | |
199 | msg.msg_iov = &iov; | |
200 | msg.msg_iovlen = 1; | |
201 | msg.msg_control = (void *) adata; | |
202 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
203 | ||
204 | iov.iov_base = buf; | |
205 | iov.iov_len = bufsize; | |
206 | ||
207 | cmsgptr = (struct cmsghdr *)adata; | |
208 | cmsgptr->cmsg_len = CMSG_LEN(sizeof (struct in6_pktinfo)); | |
209 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
210 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
211 | ||
212 | pkt = (struct in6_pktinfo *) CMSG_DATA (cmsgptr); | |
213 | memset (&pkt->ipi6_addr, 0, sizeof (struct in6_addr)); | |
214 | pkt->ipi6_ifindex = ifp->ifindex; | |
215 | ||
216 | ret = sendmsg (ripng->sock, &msg, 0); | |
217 | ||
a94434b6 | 218 | if (ret < 0) { |
219 | if (to) | |
220 | zlog_err ("RIPng send fail on %s to %s: %s", ifp->name, | |
3a2ce6a1 | 221 | inet6_ntoa (to->sin6_addr), safe_strerror (errno)); |
a94434b6 | 222 | else |
6099b3b5 | 223 | zlog_err ("RIPng send fail on %s: %s", ifp->name, safe_strerror (errno)); |
a94434b6 | 224 | } |
718e3744 | 225 | |
226 | return ret; | |
227 | } | |
228 | ||
229 | /* Receive UDP RIPng packet from socket. */ | |
6ac29a51 | 230 | static int |
718e3744 | 231 | ripng_recv_packet (int sock, u_char *buf, int bufsize, |
232 | struct sockaddr_in6 *from, unsigned int *ifindex, | |
233 | int *hoplimit) | |
234 | { | |
235 | int ret; | |
236 | struct msghdr msg; | |
237 | struct iovec iov; | |
238 | struct cmsghdr *cmsgptr; | |
239 | struct in6_addr dst; | |
240 | ||
241 | /* Ancillary data. This store cmsghdr and in6_pktinfo. But at this | |
242 | point I can't determine size of cmsghdr */ | |
243 | char adata[1024]; | |
244 | ||
245 | /* Fill in message and iovec. */ | |
246 | msg.msg_name = (void *) from; | |
247 | msg.msg_namelen = sizeof (struct sockaddr_in6); | |
248 | msg.msg_iov = &iov; | |
249 | msg.msg_iovlen = 1; | |
250 | msg.msg_control = (void *) adata; | |
251 | msg.msg_controllen = sizeof adata; | |
252 | iov.iov_base = buf; | |
253 | iov.iov_len = bufsize; | |
254 | ||
255 | /* If recvmsg fail return minus value. */ | |
256 | ret = recvmsg (sock, &msg, 0); | |
257 | if (ret < 0) | |
258 | return ret; | |
259 | ||
b99760ab | 260 | for (cmsgptr = ZCMSG_FIRSTHDR(&msg); cmsgptr != NULL; |
718e3744 | 261 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) |
262 | { | |
263 | /* I want interface index which this packet comes from. */ | |
264 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 && | |
265 | cmsgptr->cmsg_type == IPV6_PKTINFO) | |
266 | { | |
267 | struct in6_pktinfo *ptr; | |
268 | ||
269 | ptr = (struct in6_pktinfo *) CMSG_DATA (cmsgptr); | |
270 | *ifindex = ptr->ipi6_ifindex; | |
271 | dst = ptr->ipi6_addr; | |
272 | ||
273 | if (*ifindex == 0) | |
274 | zlog_warn ("Interface index returned by IPV6_PKTINFO is zero"); | |
275 | } | |
276 | ||
277 | /* Incoming packet's multicast hop limit. */ | |
278 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 && | |
279 | cmsgptr->cmsg_type == IPV6_HOPLIMIT) | |
5eb9d11b SH |
280 | { |
281 | int *phoplimit = (int *) CMSG_DATA (cmsgptr); | |
282 | *hoplimit = *phoplimit; | |
283 | } | |
718e3744 | 284 | } |
285 | ||
286 | /* Hoplimit check shold be done when destination address is | |
287 | multicast address. */ | |
288 | if (! IN6_IS_ADDR_MULTICAST (&dst)) | |
289 | *hoplimit = -1; | |
290 | ||
291 | return ret; | |
292 | } | |
293 | ||
294 | /* Dump rip packet */ | |
295 | void | |
7a1d583c | 296 | ripng_packet_dump (struct ripng_packet *packet, int size, const char *sndrcv) |
718e3744 | 297 | { |
298 | caddr_t lim; | |
299 | struct rte *rte; | |
7a1d583c | 300 | const char *command_str; |
718e3744 | 301 | |
302 | /* Set command string. */ | |
303 | if (packet->command == RIPNG_REQUEST) | |
304 | command_str = "request"; | |
305 | else if (packet->command == RIPNG_RESPONSE) | |
306 | command_str = "response"; | |
307 | else | |
308 | command_str = "unknown"; | |
309 | ||
310 | /* Dump packet header. */ | |
c6106812 | 311 | zlog_debug ("%s %s version %d packet size %d", |
718e3744 | 312 | sndrcv, command_str, packet->version, size); |
313 | ||
314 | /* Dump each routing table entry. */ | |
315 | rte = packet->rte; | |
316 | ||
317 | for (lim = (caddr_t) packet + size; (caddr_t) rte < lim; rte++) | |
318 | { | |
319 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
3a2ce6a1 | 320 | zlog_debug (" nexthop %s/%d", inet6_ntoa (rte->addr), rte->prefixlen); |
718e3744 | 321 | else |
c6106812 | 322 | zlog_debug (" %s/%d metric %d tag %d", |
3a2ce6a1 | 323 | inet6_ntoa (rte->addr), rte->prefixlen, |
718e3744 | 324 | rte->metric, ntohs (rte->tag)); |
325 | } | |
326 | } | |
327 | ||
328 | /* RIPng next hop address RTE (Route Table Entry). */ | |
6ac29a51 | 329 | static void |
718e3744 | 330 | ripng_nexthop_rte (struct rte *rte, |
331 | struct sockaddr_in6 *from, | |
332 | struct ripng_nexthop *nexthop) | |
333 | { | |
334 | char buf[INET6_BUFSIZ]; | |
335 | ||
336 | /* Logging before checking RTE. */ | |
337 | if (IS_RIPNG_DEBUG_RECV) | |
c6106812 | 338 | zlog_debug ("RIPng nexthop RTE address %s tag %d prefixlen %d", |
3a2ce6a1 | 339 | inet6_ntoa (rte->addr), ntohs (rte->tag), rte->prefixlen); |
718e3744 | 340 | |
341 | /* RFC2080 2.1.1 Next Hop: | |
342 | The route tag and prefix length in the next hop RTE must be | |
343 | set to zero on sending and ignored on receiption. */ | |
344 | if (ntohs (rte->tag) != 0) | |
345 | zlog_warn ("RIPng nexthop RTE with non zero tag value %d from %s", | |
3a2ce6a1 | 346 | ntohs (rte->tag), inet6_ntoa (from->sin6_addr)); |
718e3744 | 347 | |
348 | if (rte->prefixlen != 0) | |
349 | zlog_warn ("RIPng nexthop RTE with non zero prefixlen value %d from %s", | |
3a2ce6a1 | 350 | rte->prefixlen, inet6_ntoa (from->sin6_addr)); |
718e3744 | 351 | |
352 | /* Specifying a value of 0:0:0:0:0:0:0:0 in the prefix field of a | |
353 | next hop RTE indicates that the next hop address should be the | |
354 | originator of the RIPng advertisement. An address specified as a | |
355 | next hop must be a link-local address. */ | |
356 | if (IN6_IS_ADDR_UNSPECIFIED (&rte->addr)) | |
357 | { | |
358 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
359 | memset (&nexthop->address, 0, sizeof (struct in6_addr)); | |
360 | return; | |
361 | } | |
362 | ||
363 | if (IN6_IS_ADDR_LINKLOCAL (&rte->addr)) | |
364 | { | |
365 | nexthop->flag = RIPNG_NEXTHOP_ADDRESS; | |
366 | IPV6_ADDR_COPY (&nexthop->address, &rte->addr); | |
367 | return; | |
368 | } | |
369 | ||
370 | /* The purpose of the next hop RTE is to eliminate packets being | |
371 | routed through extra hops in the system. It is particularly useful | |
372 | when RIPng is not being run on all of the routers on a network. | |
373 | Note that next hop RTE is "advisory". That is, if the provided | |
374 | information is ignored, a possibly sub-optimal, but absolutely | |
375 | valid, route may be taken. If the received next hop address is not | |
376 | a link-local address, it should be treated as 0:0:0:0:0:0:0:0. */ | |
377 | zlog_warn ("RIPng nexthop RTE with non link-local address %s from %s", | |
3a2ce6a1 | 378 | inet6_ntoa (rte->addr), |
718e3744 | 379 | inet_ntop (AF_INET6, &from->sin6_addr, buf, INET6_BUFSIZ)); |
380 | ||
381 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
382 | memset (&nexthop->address, 0, sizeof (struct in6_addr)); | |
383 | ||
384 | return; | |
385 | } | |
386 | ||
387 | /* If ifp has same link-local address then return 1. */ | |
6ac29a51 | 388 | static int |
718e3744 | 389 | ripng_lladdr_check (struct interface *ifp, struct in6_addr *addr) |
390 | { | |
1eb8ef25 | 391 | struct listnode *node; |
718e3744 | 392 | struct connected *connected; |
393 | struct prefix *p; | |
394 | ||
1eb8ef25 | 395 | for (ALL_LIST_ELEMENTS_RO (ifp->connected, node, connected)) |
396 | { | |
397 | p = connected->address; | |
718e3744 | 398 | |
1eb8ef25 | 399 | if (p->family == AF_INET6 && |
400 | IN6_IS_ADDR_LINKLOCAL (&p->u.prefix6) && | |
401 | IN6_ARE_ADDR_EQUAL (&p->u.prefix6, addr)) | |
402 | return 1; | |
403 | } | |
718e3744 | 404 | return 0; |
405 | } | |
406 | ||
407 | /* RIPng route garbage collect timer. */ | |
6ac29a51 | 408 | static int |
718e3744 | 409 | ripng_garbage_collect (struct thread *t) |
410 | { | |
411 | struct ripng_info *rinfo; | |
412 | struct route_node *rp; | |
413 | ||
414 | rinfo = THREAD_ARG (t); | |
415 | rinfo->t_garbage_collect = NULL; | |
416 | ||
417 | /* Off timeout timer. */ | |
418 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
419 | ||
420 | /* Get route_node pointer. */ | |
421 | rp = rinfo->rp; | |
422 | ||
718e3744 | 423 | /* Unlock route_node. */ |
424 | rp->info = NULL; | |
425 | route_unlock_node (rp); | |
426 | ||
427 | /* Free RIPng routing information. */ | |
428 | ripng_info_free (rinfo); | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
433 | /* Timeout RIPng routes. */ | |
6ac29a51 | 434 | static int |
718e3744 | 435 | ripng_timeout (struct thread *t) |
436 | { | |
437 | struct ripng_info *rinfo; | |
438 | struct route_node *rp; | |
439 | ||
440 | rinfo = THREAD_ARG (t); | |
441 | rinfo->t_timeout = NULL; | |
442 | ||
443 | /* Get route_node pointer. */ | |
444 | rp = rinfo->rp; | |
445 | ||
446 | /* - The garbage-collection timer is set for 120 seconds. */ | |
447 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, ripng_garbage_collect, | |
448 | ripng->garbage_time); | |
449 | ||
a94434b6 | 450 | /* Delete this route from the kernel. */ |
451 | ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, &rinfo->nexthop, | |
452 | rinfo->ifindex); | |
718e3744 | 453 | /* - The metric for the route is set to 16 (infinity). This causes |
454 | the route to be removed from service. */ | |
455 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
a94434b6 | 456 | rinfo->flags &= ~RIPNG_RTF_FIB; |
457 | ||
458 | /* Aggregate count decrement. */ | |
459 | ripng_aggregate_decrement (rp, rinfo); | |
718e3744 | 460 | |
461 | /* - The route change flag is to indicate that this entry has been | |
462 | changed. */ | |
463 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
464 | ||
465 | /* - The output process is signalled to trigger a response. */ | |
466 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
6ac29a51 | 471 | static void |
718e3744 | 472 | ripng_timeout_update (struct ripng_info *rinfo) |
473 | { | |
474 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
475 | { | |
476 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
477 | RIPNG_TIMER_ON (rinfo->t_timeout, ripng_timeout, ripng->timeout_time); | |
478 | } | |
479 | } | |
480 | ||
6ac29a51 | 481 | static int |
a94434b6 | 482 | ripng_incoming_filter (struct prefix_ipv6 *p, struct ripng_interface *ri) |
483 | { | |
484 | struct distribute *dist; | |
485 | struct access_list *alist; | |
486 | struct prefix_list *plist; | |
487 | ||
488 | /* Input distribute-list filtering. */ | |
489 | if (ri->list[RIPNG_FILTER_IN]) | |
490 | { | |
491 | if (access_list_apply (ri->list[RIPNG_FILTER_IN], | |
492 | (struct prefix *) p) == FILTER_DENY) | |
493 | { | |
494 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 495 | zlog_debug ("%s/%d filtered by distribute in", |
3a2ce6a1 | 496 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 497 | return -1; |
498 | } | |
499 | } | |
500 | if (ri->prefix[RIPNG_FILTER_IN]) | |
501 | { | |
502 | if (prefix_list_apply (ri->prefix[RIPNG_FILTER_IN], | |
503 | (struct prefix *) p) == PREFIX_DENY) | |
504 | { | |
505 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 506 | zlog_debug ("%s/%d filtered by prefix-list in", |
3a2ce6a1 | 507 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 508 | return -1; |
509 | } | |
510 | } | |
511 | ||
512 | /* All interface filter check. */ | |
513 | dist = distribute_lookup (NULL); | |
514 | if (dist) | |
515 | { | |
516 | if (dist->list[DISTRIBUTE_IN]) | |
517 | { | |
518 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]); | |
519 | ||
520 | if (alist) | |
521 | { | |
522 | if (access_list_apply (alist, | |
523 | (struct prefix *) p) == FILTER_DENY) | |
524 | { | |
525 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 526 | zlog_debug ("%s/%d filtered by distribute in", |
3a2ce6a1 | 527 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 528 | return -1; |
529 | } | |
530 | } | |
531 | } | |
532 | if (dist->prefix[DISTRIBUTE_IN]) | |
533 | { | |
534 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]); | |
535 | ||
536 | if (plist) | |
537 | { | |
538 | if (prefix_list_apply (plist, | |
539 | (struct prefix *) p) == PREFIX_DENY) | |
540 | { | |
541 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 542 | zlog_debug ("%s/%d filtered by prefix-list in", |
3a2ce6a1 | 543 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 544 | return -1; |
545 | } | |
546 | } | |
547 | } | |
548 | } | |
549 | return 0; | |
550 | } | |
551 | ||
6ac29a51 | 552 | static int |
a94434b6 | 553 | ripng_outgoing_filter (struct prefix_ipv6 *p, struct ripng_interface *ri) |
554 | { | |
555 | struct distribute *dist; | |
556 | struct access_list *alist; | |
557 | struct prefix_list *plist; | |
558 | ||
559 | if (ri->list[RIPNG_FILTER_OUT]) | |
560 | { | |
561 | if (access_list_apply (ri->list[RIPNG_FILTER_OUT], | |
562 | (struct prefix *) p) == FILTER_DENY) | |
563 | { | |
564 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 565 | zlog_debug ("%s/%d is filtered by distribute out", |
3a2ce6a1 | 566 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 567 | return -1; |
568 | } | |
569 | } | |
570 | if (ri->prefix[RIPNG_FILTER_OUT]) | |
571 | { | |
572 | if (prefix_list_apply (ri->prefix[RIPNG_FILTER_OUT], | |
573 | (struct prefix *) p) == PREFIX_DENY) | |
574 | { | |
575 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 576 | zlog_debug ("%s/%d is filtered by prefix-list out", |
3a2ce6a1 | 577 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 578 | return -1; |
579 | } | |
580 | } | |
581 | ||
582 | /* All interface filter check. */ | |
583 | dist = distribute_lookup (NULL); | |
584 | if (dist) | |
585 | { | |
586 | if (dist->list[DISTRIBUTE_OUT]) | |
587 | { | |
588 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]); | |
589 | ||
590 | if (alist) | |
591 | { | |
592 | if (access_list_apply (alist, | |
593 | (struct prefix *) p) == FILTER_DENY) | |
594 | { | |
595 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 596 | zlog_debug ("%s/%d filtered by distribute out", |
3a2ce6a1 | 597 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 598 | return -1; |
599 | } | |
600 | } | |
601 | } | |
602 | if (dist->prefix[DISTRIBUTE_OUT]) | |
603 | { | |
604 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]); | |
605 | ||
606 | if (plist) | |
607 | { | |
608 | if (prefix_list_apply (plist, | |
609 | (struct prefix *) p) == PREFIX_DENY) | |
610 | { | |
611 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 612 | zlog_debug ("%s/%d filtered by prefix-list out", |
3a2ce6a1 | 613 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 614 | return -1; |
615 | } | |
616 | } | |
617 | } | |
618 | } | |
619 | return 0; | |
620 | } | |
621 | ||
718e3744 | 622 | /* Process RIPng route according to RFC2080. */ |
6ac29a51 | 623 | static void |
718e3744 | 624 | ripng_route_process (struct rte *rte, struct sockaddr_in6 *from, |
625 | struct ripng_nexthop *ripng_nexthop, | |
626 | struct interface *ifp) | |
627 | { | |
a94434b6 | 628 | int ret; |
718e3744 | 629 | struct prefix_ipv6 p; |
630 | struct route_node *rp; | |
631 | struct ripng_info *rinfo; | |
632 | struct ripng_interface *ri; | |
633 | struct in6_addr *nexthop; | |
634 | u_char oldmetric; | |
635 | int same = 0; | |
636 | ||
637 | /* Make prefix structure. */ | |
638 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
639 | p.family = AF_INET6; | |
640 | /* p.prefix = rte->addr; */ | |
641 | IPV6_ADDR_COPY (&p.prefix, &rte->addr); | |
642 | p.prefixlen = rte->prefixlen; | |
643 | ||
644 | /* Make sure mask is applied. */ | |
645 | /* XXX We have to check the prefix is valid or not before call | |
646 | apply_mask_ipv6. */ | |
647 | apply_mask_ipv6 (&p); | |
648 | ||
649 | /* Apply input filters. */ | |
650 | ri = ifp->info; | |
651 | ||
a94434b6 | 652 | ret = ripng_incoming_filter (&p, ri); |
653 | if (ret < 0) | |
654 | return; | |
718e3744 | 655 | |
656 | /* Modify entry. */ | |
657 | if (ri->routemap[RIPNG_FILTER_IN]) | |
658 | { | |
659 | int ret; | |
660 | struct ripng_info newinfo; | |
661 | ||
41ce926c | 662 | memset (&newinfo, 0, sizeof (struct ripng_info)); |
a94434b6 | 663 | newinfo.type = ZEBRA_ROUTE_RIPNG; |
664 | newinfo.sub_type = RIPNG_ROUTE_RTE; | |
665 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
666 | newinfo.nexthop = ripng_nexthop->address; | |
667 | else | |
668 | newinfo.nexthop = from->sin6_addr; | |
669 | newinfo.from = from->sin6_addr; | |
670 | newinfo.ifindex = ifp->ifindex; | |
718e3744 | 671 | newinfo.metric = rte->metric; |
a94434b6 | 672 | newinfo.metric_out = rte->metric; /* XXX */ |
673 | newinfo.tag = ntohs(rte->tag); /* XXX */ | |
718e3744 | 674 | |
675 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_IN], | |
676 | (struct prefix *)&p, RMAP_RIPNG, &newinfo); | |
677 | ||
678 | if (ret == RMAP_DENYMATCH) | |
679 | { | |
680 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 681 | zlog_debug ("RIPng %s/%d is filtered by route-map in", |
3a2ce6a1 | 682 | inet6_ntoa (p.prefix), p.prefixlen); |
718e3744 | 683 | return; |
684 | } | |
685 | ||
a94434b6 | 686 | /* Get back the object */ |
687 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) { | |
688 | if (! IPV6_ADDR_SAME(&newinfo.nexthop, &ripng_nexthop->address) ) { | |
689 | /* the nexthop get changed by the routemap */ | |
690 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) | |
691 | ripng_nexthop->address = newinfo.nexthop; | |
692 | else | |
693 | ripng_nexthop->address = in6addr_any; | |
694 | } | |
695 | } else { | |
696 | if (! IPV6_ADDR_SAME(&newinfo.nexthop, &from->sin6_addr) ) { | |
697 | /* the nexthop get changed by the routemap */ | |
698 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) { | |
699 | ripng_nexthop->flag = RIPNG_NEXTHOP_ADDRESS; | |
700 | ripng_nexthop->address = newinfo.nexthop; | |
701 | } | |
702 | } | |
703 | } | |
704 | rte->tag = htons(newinfo.tag_out); /* XXX */ | |
705 | rte->metric = newinfo.metric_out; /* XXX: the routemap uses the metric_out field */ | |
718e3744 | 706 | } |
707 | ||
a94434b6 | 708 | /* Once the entry has been validated, update the metric by |
709 | * adding the cost of the network on wich the message | |
710 | * arrived. If the result is greater than infinity, use infinity | |
711 | * (RFC2453 Sec. 3.9.2) | |
712 | **/ | |
713 | ||
714 | /* Zebra ripngd can handle offset-list in. */ | |
715 | ret = ripng_offset_list_apply_in (&p, ifp, &rte->metric); | |
716 | ||
717 | /* If offset-list does not modify the metric use interface's | |
718 | * one. */ | |
719 | if (! ret) | |
720 | rte->metric += ifp->metric; | |
721 | ||
722 | if (rte->metric > RIPNG_METRIC_INFINITY) | |
723 | rte->metric = RIPNG_METRIC_INFINITY; | |
724 | ||
718e3744 | 725 | /* Set nexthop pointer. */ |
726 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
727 | nexthop = &ripng_nexthop->address; | |
728 | else | |
729 | nexthop = &from->sin6_addr; | |
730 | ||
731 | /* Lookup RIPng routing table. */ | |
732 | rp = route_node_get (ripng->table, (struct prefix *) &p); | |
733 | ||
a94434b6 | 734 | /* Sanity check */ |
735 | rinfo = rp->info; | |
736 | if (rinfo) | |
737 | { | |
738 | /* Redistributed route check. */ | |
739 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
740 | && rinfo->metric != RIPNG_METRIC_INFINITY) | |
741 | return; | |
742 | ||
743 | /* Local static route. */ | |
744 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
745 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) || | |
746 | (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) | |
747 | && rinfo->metric != RIPNG_METRIC_INFINITY) | |
748 | return; | |
749 | } | |
750 | ||
718e3744 | 751 | if (rp->info == NULL) |
752 | { | |
753 | /* Now, check to see whether there is already an explicit route | |
754 | for the destination prefix. If there is no such route, add | |
755 | this route to the routing table, unless the metric is | |
756 | infinity (there is no point in adding a route which | |
757 | unusable). */ | |
758 | if (rte->metric != RIPNG_METRIC_INFINITY) | |
759 | { | |
760 | rinfo = ripng_info_new (); | |
761 | ||
762 | /* - Setting the destination prefix and length to those in | |
763 | the RTE. */ | |
764 | rp->info = rinfo; | |
765 | rinfo->rp = rp; | |
766 | ||
767 | /* - Setting the metric to the newly calculated metric (as | |
768 | described above). */ | |
769 | rinfo->metric = rte->metric; | |
770 | rinfo->tag = ntohs (rte->tag); | |
771 | ||
772 | /* - Set the next hop address to be the address of the router | |
773 | from which the datagram came or the next hop address | |
774 | specified by a next hop RTE. */ | |
775 | IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); | |
776 | IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr); | |
777 | rinfo->ifindex = ifp->ifindex; | |
778 | ||
779 | /* - Initialize the timeout for the route. If the | |
780 | garbage-collection timer is running for this route, stop it. */ | |
781 | ripng_timeout_update (rinfo); | |
782 | ||
783 | /* - Set the route change flag. */ | |
784 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
785 | ||
786 | /* - Signal the output process to trigger an update (see section | |
787 | 2.5). */ | |
788 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
789 | ||
790 | /* Finally, route goes into the kernel. */ | |
791 | rinfo->type = ZEBRA_ROUTE_RIPNG; | |
792 | rinfo->sub_type = RIPNG_ROUTE_RTE; | |
793 | ||
deba3550 | 794 | ripng_zebra_ipv6_add (&p, &rinfo->nexthop, rinfo->ifindex, |
795 | rinfo->metric); | |
718e3744 | 796 | rinfo->flags |= RIPNG_RTF_FIB; |
797 | ||
798 | /* Aggregate check. */ | |
799 | ripng_aggregate_increment (rp, rinfo); | |
800 | } | |
801 | } | |
802 | else | |
803 | { | |
804 | rinfo = rp->info; | |
805 | ||
806 | /* If there is an existing route, compare the next hop address | |
807 | to the address of the router from which the datagram came. | |
808 | If this datagram is from the same router as the existing | |
809 | route, reinitialize the timeout. */ | |
810 | same = (IN6_ARE_ADDR_EQUAL (&rinfo->from, &from->sin6_addr) | |
811 | && (rinfo->ifindex == ifp->ifindex)); | |
812 | ||
813 | if (same) | |
814 | ripng_timeout_update (rinfo); | |
815 | ||
816 | /* Next, compare the metrics. If the datagram is from the same | |
817 | router as the existing route, and the new metric is different | |
818 | than the old one; or, if the new metric is lower than the old | |
819 | one; do the following actions: */ | |
820 | if ((same && rinfo->metric != rte->metric) || | |
821 | rte->metric < rinfo->metric) | |
822 | { | |
823 | /* - Adopt the route from the datagram. That is, put the | |
824 | new metric in, and adjust the next hop address (if | |
825 | necessary). */ | |
826 | oldmetric = rinfo->metric; | |
827 | rinfo->metric = rte->metric; | |
828 | rinfo->tag = ntohs (rte->tag); | |
a94434b6 | 829 | IPV6_ADDR_COPY (&rinfo->from, &from->sin6_addr); |
830 | rinfo->ifindex = ifp->ifindex; | |
718e3744 | 831 | |
a94434b6 | 832 | /* Should a new route to this network be established |
833 | while the garbage-collection timer is running, the | |
834 | new route will replace the one that is about to be | |
835 | deleted. In this case the garbage-collection timer | |
836 | must be cleared. */ | |
837 | ||
838 | if (oldmetric == RIPNG_METRIC_INFINITY && | |
839 | rinfo->metric < RIPNG_METRIC_INFINITY) | |
840 | { | |
841 | rinfo->type = ZEBRA_ROUTE_RIPNG; | |
842 | rinfo->sub_type = RIPNG_ROUTE_RTE; | |
843 | ||
844 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
845 | ||
846 | if (! IPV6_ADDR_SAME (&rinfo->nexthop, nexthop)) | |
deba3550 | 847 | IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); |
a94434b6 | 848 | |
deba3550 | 849 | ripng_zebra_ipv6_add (&p, nexthop, ifp->ifindex, rinfo->metric); |
a94434b6 | 850 | rinfo->flags |= RIPNG_RTF_FIB; |
851 | ||
852 | /* The aggregation counter needs to be updated because | |
853 | the prefixes, which are into the gc, have been | |
854 | removed from the aggregator (see ripng_timout). */ | |
855 | ripng_aggregate_increment (rp, rinfo); | |
856 | } | |
857 | ||
858 | /* Update nexthop and/or metric value. */ | |
859 | if (oldmetric != RIPNG_METRIC_INFINITY) | |
718e3744 | 860 | { |
861 | ripng_zebra_ipv6_delete (&p, &rinfo->nexthop, rinfo->ifindex); | |
deba3550 | 862 | ripng_zebra_ipv6_add (&p, nexthop, ifp->ifindex, rinfo->metric); |
718e3744 | 863 | rinfo->flags |= RIPNG_RTF_FIB; |
864 | ||
a94434b6 | 865 | if (! IPV6_ADDR_SAME (&rinfo->nexthop, nexthop)) |
866 | IPV6_ADDR_COPY (&rinfo->nexthop, nexthop); | |
718e3744 | 867 | } |
718e3744 | 868 | |
869 | /* - Set the route change flag and signal the output process | |
870 | to trigger an update. */ | |
871 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
872 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
873 | ||
874 | /* - If the new metric is infinity, start the deletion | |
875 | process (described above); */ | |
876 | if (rinfo->metric == RIPNG_METRIC_INFINITY) | |
877 | { | |
878 | /* If the new metric is infinity, the deletion process | |
879 | begins for the route, which is no longer used for | |
880 | routing packets. Note that the deletion process is | |
881 | started only when the metric is first set to | |
882 | infinity. If the metric was already infinity, then a | |
883 | new deletion process is not started. */ | |
884 | if (oldmetric != RIPNG_METRIC_INFINITY) | |
885 | { | |
886 | /* - The garbage-collection timer is set for 120 seconds. */ | |
887 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, | |
888 | ripng_garbage_collect, ripng->garbage_time); | |
889 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
890 | ||
891 | /* - The metric for the route is set to 16 | |
892 | (infinity). This causes the route to be removed | |
893 | from service.*/ | |
a94434b6 | 894 | ripng_zebra_ipv6_delete (&p, &rinfo->nexthop, rinfo->ifindex); |
895 | rinfo->flags &= ~RIPNG_RTF_FIB; | |
896 | ||
897 | /* Aggregate count decrement. */ | |
898 | ripng_aggregate_decrement (rp, rinfo); | |
899 | ||
718e3744 | 900 | /* - The route change flag is to indicate that this |
901 | entry has been changed. */ | |
902 | /* - The output process is signalled to trigger a | |
903 | response. */ | |
904 | ; /* Above processes are already done previously. */ | |
905 | } | |
906 | } | |
907 | else | |
908 | { | |
909 | /* otherwise, re-initialize the timeout. */ | |
910 | ripng_timeout_update (rinfo); | |
718e3744 | 911 | } |
912 | } | |
913 | /* Unlock tempolary lock of the route. */ | |
914 | route_unlock_node (rp); | |
915 | } | |
916 | } | |
917 | ||
918 | /* Add redistributed route to RIPng table. */ | |
919 | void | |
920 | ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p, | |
a94434b6 | 921 | unsigned int ifindex, struct in6_addr *nexthop) |
718e3744 | 922 | { |
923 | struct route_node *rp; | |
924 | struct ripng_info *rinfo; | |
925 | ||
926 | /* Redistribute route */ | |
927 | if (IN6_IS_ADDR_LINKLOCAL (&p->prefix)) | |
928 | return; | |
929 | if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) | |
930 | return; | |
a94434b6 | 931 | #if defined (MUSICA) || defined (LINUX) |
932 | /* XXX As long as the RIPng redistribution is applied to all the connected | |
933 | * routes, one needs to filter the ::/96 prefixes. | |
934 | * However it could be a wanted case, it will be removed soon. | |
935 | */ | |
936 | if ((IN6_IS_ADDR_V4COMPAT(&p->prefix)) || | |
937 | (IN6_IS_ADDR_UNSPECIFIED (&p->prefix) && (p->prefixlen == 96))) | |
938 | return; | |
939 | #endif /* MUSICA or LINUX */ | |
718e3744 | 940 | |
941 | rp = route_node_get (ripng->table, (struct prefix *) p); | |
942 | rinfo = rp->info; | |
943 | ||
944 | if (rinfo) | |
945 | { | |
a94434b6 | 946 | if (rinfo->type == ZEBRA_ROUTE_CONNECT |
947 | && rinfo->sub_type == RIPNG_ROUTE_INTERFACE | |
948 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
949 | route_unlock_node (rp); | |
950 | return; | |
951 | } | |
952 | ||
953 | /* Manually configured RIPng route check. | |
954 | * They have the precedence on all the other entries. | |
955 | **/ | |
956 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
957 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) || | |
958 | (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) ) { | |
959 | if (type != ZEBRA_ROUTE_RIPNG || ((sub_type != RIPNG_ROUTE_STATIC) && | |
960 | (sub_type != RIPNG_ROUTE_DEFAULT))) { | |
961 | route_unlock_node (rp); | |
962 | return; | |
963 | } | |
964 | } | |
965 | ||
718e3744 | 966 | RIPNG_TIMER_OFF (rinfo->t_timeout); |
967 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
a94434b6 | 968 | |
969 | /* Tells the other daemons about the deletion of | |
970 | * this RIPng route | |
971 | **/ | |
972 | if (ripng_route_rte (rinfo)) | |
973 | ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, &rinfo->nexthop, | |
974 | rinfo->metric); | |
975 | ||
976 | rp->info = NULL; | |
977 | ripng_info_free (rinfo); | |
978 | ||
718e3744 | 979 | route_unlock_node (rp); |
a94434b6 | 980 | |
718e3744 | 981 | } |
a94434b6 | 982 | |
983 | rinfo = ripng_info_new (); | |
718e3744 | 984 | |
985 | rinfo->type = type; | |
986 | rinfo->sub_type = sub_type; | |
987 | rinfo->ifindex = ifindex; | |
988 | rinfo->metric = 1; | |
718e3744 | 989 | rinfo->rp = rp; |
a94434b6 | 990 | |
991 | if (nexthop && IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
992 | rinfo->nexthop = *nexthop; | |
993 | ||
994 | rinfo->flags |= RIPNG_RTF_FIB; | |
718e3744 | 995 | rp->info = rinfo; |
a94434b6 | 996 | |
997 | /* Aggregate check. */ | |
998 | ripng_aggregate_increment (rp, rinfo); | |
999 | ||
1000 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1001 | ||
1002 | if (IS_RIPNG_DEBUG_EVENT) { | |
1003 | if (!nexthop) | |
c6106812 | 1004 | zlog_debug ("Redistribute new prefix %s/%d on the interface %s", |
3a2ce6a1 | 1005 | inet6_ntoa(p->prefix), p->prefixlen, |
a94434b6 | 1006 | ifindex2ifname(ifindex)); |
1007 | else | |
c6106812 | 1008 | zlog_debug ("Redistribute new prefix %s/%d with nexthop %s on the interface %s", |
3a2ce6a1 | 1009 | inet6_ntoa(p->prefix), p->prefixlen, inet6_ntoa(*nexthop), |
a94434b6 | 1010 | ifindex2ifname(ifindex)); |
1011 | } | |
1012 | ||
1013 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
718e3744 | 1014 | } |
1015 | ||
1016 | /* Delete redistributed route to RIPng table. */ | |
1017 | void | |
1018 | ripng_redistribute_delete (int type, int sub_type, struct prefix_ipv6 *p, | |
1019 | unsigned int ifindex) | |
1020 | { | |
1021 | struct route_node *rp; | |
1022 | struct ripng_info *rinfo; | |
1023 | ||
1024 | if (IN6_IS_ADDR_LINKLOCAL (&p->prefix)) | |
1025 | return; | |
1026 | if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) | |
1027 | return; | |
a94434b6 | 1028 | #if defined (MUSICA) || defined (LINUX) |
1029 | /* XXX As long as the RIPng redistribution is applied to all the connected | |
1030 | * routes, one needs to filter the ::/96 prefixes. | |
1031 | * However it could be a wanted case, it will be removed soon. | |
1032 | */ | |
1033 | if ((IN6_IS_ADDR_V4COMPAT(&p->prefix)) || | |
1034 | (IN6_IS_ADDR_UNSPECIFIED (&p->prefix) && (p->prefixlen == 96))) | |
1035 | return; | |
1036 | #endif /* MUSICA or LINUX */ | |
718e3744 | 1037 | |
1038 | rp = route_node_lookup (ripng->table, (struct prefix *) p); | |
1039 | ||
1040 | if (rp) | |
1041 | { | |
1042 | rinfo = rp->info; | |
1043 | ||
1044 | if (rinfo != NULL | |
1045 | && rinfo->type == type | |
1046 | && rinfo->sub_type == sub_type | |
1047 | && rinfo->ifindex == ifindex) | |
1048 | { | |
a94434b6 | 1049 | /* Perform poisoned reverse. */ |
1050 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1051 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, | |
1052 | ripng_garbage_collect, ripng->garbage_time); | |
718e3744 | 1053 | RIPNG_TIMER_OFF (rinfo->t_timeout); |
a94434b6 | 1054 | |
1055 | /* Aggregate count decrement. */ | |
1056 | ripng_aggregate_decrement (rp, rinfo); | |
1057 | ||
1058 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
718e3744 | 1059 | |
a94434b6 | 1060 | if (IS_RIPNG_DEBUG_EVENT) |
c6106812 | 1061 | zlog_debug ("Poisone %s/%d on the interface %s with an infinity metric [delete]", |
3a2ce6a1 | 1062 | inet6_ntoa(p->prefix), p->prefixlen, |
a94434b6 | 1063 | ifindex2ifname(ifindex)); |
718e3744 | 1064 | |
a94434b6 | 1065 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); |
718e3744 | 1066 | } |
718e3744 | 1067 | } |
1068 | } | |
1069 | ||
1070 | /* Withdraw redistributed route. */ | |
1071 | void | |
1072 | ripng_redistribute_withdraw (int type) | |
1073 | { | |
1074 | struct route_node *rp; | |
1075 | struct ripng_info *rinfo; | |
1076 | ||
a94434b6 | 1077 | if (!ripng) |
1078 | return; | |
1079 | ||
718e3744 | 1080 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) |
1081 | if ((rinfo = rp->info) != NULL) | |
1082 | { | |
a94434b6 | 1083 | if ((rinfo->type == type) |
1084 | && (rinfo->sub_type != RIPNG_ROUTE_INTERFACE)) | |
718e3744 | 1085 | { |
a94434b6 | 1086 | /* Perform poisoned reverse. */ |
1087 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1088 | RIPNG_TIMER_ON (rinfo->t_garbage_collect, | |
1089 | ripng_garbage_collect, ripng->garbage_time); | |
718e3744 | 1090 | RIPNG_TIMER_OFF (rinfo->t_timeout); |
718e3744 | 1091 | |
a94434b6 | 1092 | /* Aggregate count decrement. */ |
1093 | ripng_aggregate_decrement (rp, rinfo); | |
1094 | ||
1095 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1096 | ||
1097 | if (IS_RIPNG_DEBUG_EVENT) { | |
1098 | struct prefix_ipv6 *p = (struct prefix_ipv6 *) &rp->p; | |
718e3744 | 1099 | |
c6106812 | 1100 | zlog_debug ("Poisone %s/%d on the interface %s [withdraw]", |
3a2ce6a1 | 1101 | inet6_ntoa(p->prefix), p->prefixlen, |
a94434b6 | 1102 | ifindex2ifname(rinfo->ifindex)); |
1103 | } | |
1104 | ||
1105 | ripng_event (RIPNG_TRIGGERED_UPDATE, 0); | |
718e3744 | 1106 | } |
1107 | } | |
1108 | } | |
1109 | ||
1110 | /* RIP routing information. */ | |
6ac29a51 | 1111 | static void |
718e3744 | 1112 | ripng_response_process (struct ripng_packet *packet, int size, |
1113 | struct sockaddr_in6 *from, struct interface *ifp, | |
1114 | int hoplimit) | |
1115 | { | |
1116 | caddr_t lim; | |
1117 | struct rte *rte; | |
1118 | struct ripng_nexthop nexthop; | |
1119 | ||
1120 | /* RFC2080 2.4.2 Response Messages: | |
1121 | The Response must be ignored if it is not from the RIPng port. */ | |
1122 | if (ntohs (from->sin6_port) != RIPNG_PORT_DEFAULT) | |
1123 | { | |
1124 | zlog_warn ("RIPng packet comes from non RIPng port %d from %s", | |
3a2ce6a1 | 1125 | ntohs (from->sin6_port), inet6_ntoa (from->sin6_addr)); |
a94434b6 | 1126 | ripng_peer_bad_packet (from); |
718e3744 | 1127 | return; |
1128 | } | |
1129 | ||
1130 | /* The datagram's IPv6 source address should be checked to see | |
1131 | whether the datagram is from a valid neighbor; the source of the | |
1132 | datagram must be a link-local address. */ | |
1133 | if (! IN6_IS_ADDR_LINKLOCAL(&from->sin6_addr)) | |
1134 | { | |
1135 | zlog_warn ("RIPng packet comes from non link local address %s", | |
3a2ce6a1 | 1136 | inet6_ntoa (from->sin6_addr)); |
a94434b6 | 1137 | ripng_peer_bad_packet (from); |
718e3744 | 1138 | return; |
1139 | } | |
1140 | ||
1141 | /* It is also worth checking to see whether the response is from one | |
1142 | of the router's own addresses. Interfaces on broadcast networks | |
1143 | may receive copies of their own multicasts immediately. If a | |
1144 | router processes its own output as new input, confusion is likely, | |
1145 | and such datagrams must be ignored. */ | |
1146 | if (ripng_lladdr_check (ifp, &from->sin6_addr)) | |
1147 | { | |
1148 | zlog_warn ("RIPng packet comes from my own link local address %s", | |
3a2ce6a1 | 1149 | inet6_ntoa (from->sin6_addr)); |
a94434b6 | 1150 | ripng_peer_bad_packet (from); |
718e3744 | 1151 | return; |
1152 | } | |
1153 | ||
1154 | /* As an additional check, periodic advertisements must have their | |
1155 | hop counts set to 255, and inbound, multicast packets sent from the | |
1156 | RIPng port (i.e. periodic advertisement or triggered update | |
1157 | packets) must be examined to ensure that the hop count is 255. */ | |
1158 | if (hoplimit >= 0 && hoplimit != 255) | |
1159 | { | |
1160 | zlog_warn ("RIPng packet comes with non 255 hop count %d from %s", | |
3a2ce6a1 | 1161 | hoplimit, inet6_ntoa (from->sin6_addr)); |
a94434b6 | 1162 | ripng_peer_bad_packet (from); |
718e3744 | 1163 | return; |
1164 | } | |
1165 | ||
a94434b6 | 1166 | /* Update RIPng peer. */ |
1167 | ripng_peer_update (from, packet->version); | |
1168 | ||
718e3744 | 1169 | /* Reset nexthop. */ |
1170 | memset (&nexthop, 0, sizeof (struct ripng_nexthop)); | |
1171 | nexthop.flag = RIPNG_NEXTHOP_UNSPEC; | |
1172 | ||
1173 | /* Set RTE pointer. */ | |
1174 | rte = packet->rte; | |
1175 | ||
1176 | for (lim = ((caddr_t) packet) + size; (caddr_t) rte < lim; rte++) | |
1177 | { | |
1178 | /* First of all, we have to check this RTE is next hop RTE or | |
1179 | not. Next hop RTE is completely different with normal RTE so | |
1180 | we need special treatment. */ | |
1181 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
1182 | { | |
1183 | ripng_nexthop_rte (rte, from, &nexthop); | |
1184 | continue; | |
1185 | } | |
1186 | ||
1187 | /* RTE information validation. */ | |
1188 | ||
1189 | /* - is the destination prefix valid (e.g., not a multicast | |
1190 | prefix and not a link-local address) A link-local address | |
1191 | should never be present in an RTE. */ | |
1192 | if (IN6_IS_ADDR_MULTICAST (&rte->addr)) | |
1193 | { | |
1194 | zlog_warn ("Destination prefix is a multicast address %s/%d [%d]", | |
3a2ce6a1 | 1195 | inet6_ntoa (rte->addr), rte->prefixlen, rte->metric); |
a94434b6 | 1196 | ripng_peer_bad_route (from); |
718e3744 | 1197 | continue; |
1198 | } | |
1199 | if (IN6_IS_ADDR_LINKLOCAL (&rte->addr)) | |
1200 | { | |
1201 | zlog_warn ("Destination prefix is a link-local address %s/%d [%d]", | |
3a2ce6a1 | 1202 | inet6_ntoa (rte->addr), rte->prefixlen, rte->metric); |
a94434b6 | 1203 | ripng_peer_bad_route (from); |
718e3744 | 1204 | continue; |
1205 | } | |
1206 | if (IN6_IS_ADDR_LOOPBACK (&rte->addr)) | |
1207 | { | |
1208 | zlog_warn ("Destination prefix is a loopback address %s/%d [%d]", | |
3a2ce6a1 | 1209 | inet6_ntoa (rte->addr), rte->prefixlen, rte->metric); |
a94434b6 | 1210 | ripng_peer_bad_route (from); |
718e3744 | 1211 | continue; |
1212 | } | |
1213 | ||
1214 | /* - is the prefix length valid (i.e., between 0 and 128, | |
1215 | inclusive) */ | |
1216 | if (rte->prefixlen > 128) | |
1217 | { | |
1218 | zlog_warn ("Invalid prefix length %s/%d from %s%%%s", | |
3a2ce6a1 | 1219 | inet6_ntoa (rte->addr), rte->prefixlen, |
1220 | inet6_ntoa (from->sin6_addr), ifp->name); | |
a94434b6 | 1221 | ripng_peer_bad_route (from); |
718e3744 | 1222 | continue; |
1223 | } | |
1224 | ||
1225 | /* - is the metric valid (i.e., between 1 and 16, inclusive) */ | |
1226 | if (! (rte->metric >= 1 && rte->metric <= 16)) | |
1227 | { | |
1228 | zlog_warn ("Invalid metric %d from %s%%%s", rte->metric, | |
3a2ce6a1 | 1229 | inet6_ntoa (from->sin6_addr), ifp->name); |
a94434b6 | 1230 | ripng_peer_bad_route (from); |
718e3744 | 1231 | continue; |
1232 | } | |
1233 | ||
a94434b6 | 1234 | /* Vincent: XXX Should we compute the direclty reachable nexthop |
1235 | * for our RIPng network ? | |
1236 | **/ | |
718e3744 | 1237 | |
1238 | /* Routing table updates. */ | |
1239 | ripng_route_process (rte, from, &nexthop, ifp); | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | /* Response to request message. */ | |
6ac29a51 | 1244 | static void |
718e3744 | 1245 | ripng_request_process (struct ripng_packet *packet,int size, |
1246 | struct sockaddr_in6 *from, struct interface *ifp) | |
1247 | { | |
1248 | caddr_t lim; | |
1249 | struct rte *rte; | |
1250 | struct prefix_ipv6 p; | |
1251 | struct route_node *rp; | |
1252 | struct ripng_info *rinfo; | |
1253 | struct ripng_interface *ri; | |
1254 | ||
a94434b6 | 1255 | /* Does not reponse to the requests on the loopback interfaces */ |
1256 | if (if_is_loopback (ifp)) | |
1257 | return; | |
1258 | ||
718e3744 | 1259 | /* Check RIPng process is enabled on this interface. */ |
1260 | ri = ifp->info; | |
1261 | if (! ri->running) | |
1262 | return; | |
1263 | ||
1264 | /* When passive interface is specified, suppress responses */ | |
1265 | if (ri->passive) | |
1266 | return; | |
1267 | ||
a94434b6 | 1268 | /* RIPng peer update. */ |
1269 | ripng_peer_update (from, packet->version); | |
1270 | ||
718e3744 | 1271 | lim = ((caddr_t) packet) + size; |
1272 | rte = packet->rte; | |
1273 | ||
1274 | /* The Request is processed entry by entry. If there are no | |
1275 | entries, no response is given. */ | |
1276 | if (lim == (caddr_t) rte) | |
1277 | return; | |
1278 | ||
1279 | /* There is one special case. If there is exactly one entry in the | |
1280 | request, and it has a destination prefix of zero, a prefix length | |
1281 | of zero, and a metric of infinity (i.e., 16), then this is a | |
1282 | request to send the entire routing table. In that case, a call | |
1283 | is made to the output process to send the routing table to the | |
1284 | requesting address/port. */ | |
1285 | if (lim == ((caddr_t) (rte + 1)) && | |
1286 | IN6_IS_ADDR_UNSPECIFIED (&rte->addr) && | |
1287 | rte->prefixlen == 0 && | |
1288 | rte->metric == RIPNG_METRIC_INFINITY) | |
1289 | { | |
1290 | /* All route with split horizon */ | |
a94434b6 | 1291 | ripng_output_process (ifp, from, ripng_all_route); |
718e3744 | 1292 | } |
1293 | else | |
1294 | { | |
1295 | /* Except for this special case, processing is quite simple. | |
1296 | Examine the list of RTEs in the Request one by one. For each | |
1297 | entry, look up the destination in the router's routing | |
1298 | database and, if there is a route, put that route's metric in | |
1299 | the metric field of the RTE. If there is no explicit route | |
1300 | to the specified destination, put infinity in the metric | |
1301 | field. Once all the entries have been filled in, change the | |
1302 | command from Request to Response and send the datagram back | |
1303 | to the requestor. */ | |
1304 | memset (&p, 0, sizeof (struct prefix_ipv6)); | |
1305 | p.family = AF_INET6; | |
1306 | ||
1307 | for (; ((caddr_t) rte) < lim; rte++) | |
1308 | { | |
1309 | p.prefix = rte->addr; | |
1310 | p.prefixlen = rte->prefixlen; | |
1311 | apply_mask_ipv6 (&p); | |
1312 | ||
1313 | rp = route_node_lookup (ripng->table, (struct prefix *) &p); | |
1314 | ||
1315 | if (rp) | |
1316 | { | |
1317 | rinfo = rp->info; | |
1318 | rte->metric = rinfo->metric; | |
1319 | route_unlock_node (rp); | |
1320 | } | |
1321 | else | |
1322 | rte->metric = RIPNG_METRIC_INFINITY; | |
1323 | } | |
1324 | packet->command = RIPNG_RESPONSE; | |
1325 | ||
1326 | ripng_send_packet ((caddr_t) packet, size, from, ifp); | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | /* First entry point of reading RIPng packet. */ | |
6ac29a51 | 1331 | static int |
718e3744 | 1332 | ripng_read (struct thread *thread) |
1333 | { | |
1334 | int len; | |
1335 | int sock; | |
1336 | struct sockaddr_in6 from; | |
1337 | struct ripng_packet *packet; | |
1338 | unsigned int ifindex; | |
1339 | struct interface *ifp; | |
1340 | int hoplimit = -1; | |
1341 | ||
1342 | /* Check ripng is active and alive. */ | |
1343 | assert (ripng != NULL); | |
1344 | assert (ripng->sock >= 0); | |
1345 | ||
1346 | /* Fetch thread data and set read pointer to empty for event | |
1347 | managing. `sock' sould be same as ripng->sock. */ | |
1348 | sock = THREAD_FD (thread); | |
1349 | ripng->t_read = NULL; | |
1350 | ||
1351 | /* Add myself to the next event. */ | |
1352 | ripng_event (RIPNG_READ, sock); | |
1353 | ||
1354 | /* Read RIPng packet. */ | |
1355 | len = ripng_recv_packet (sock, STREAM_DATA (ripng->ibuf), | |
1356 | STREAM_SIZE (ripng->ibuf), &from, &ifindex, | |
1357 | &hoplimit); | |
1358 | if (len < 0) | |
1359 | { | |
6099b3b5 | 1360 | zlog_warn ("RIPng recvfrom failed: %s.", safe_strerror (errno)); |
718e3744 | 1361 | return len; |
1362 | } | |
1363 | ||
1364 | /* Check RTE boundary. RTE size (Packet length - RIPng header size | |
1365 | (4)) must be multiple size of one RTE size (20). */ | |
1366 | if (((len - 4) % 20) != 0) | |
1367 | { | |
1368 | zlog_warn ("RIPng invalid packet size %d from %s", len, | |
3a2ce6a1 | 1369 | inet6_ntoa (from.sin6_addr)); |
a94434b6 | 1370 | ripng_peer_bad_packet (&from); |
718e3744 | 1371 | return 0; |
1372 | } | |
1373 | ||
1374 | packet = (struct ripng_packet *) STREAM_DATA (ripng->ibuf); | |
1375 | ifp = if_lookup_by_index (ifindex); | |
1376 | ||
1377 | /* RIPng packet received. */ | |
1378 | if (IS_RIPNG_DEBUG_EVENT) | |
c6106812 | 1379 | zlog_debug ("RIPng packet received from %s port %d on %s", |
3a2ce6a1 | 1380 | inet6_ntoa (from.sin6_addr), ntohs (from.sin6_port), |
718e3744 | 1381 | ifp ? ifp->name : "unknown"); |
1382 | ||
1383 | /* Logging before packet checking. */ | |
1384 | if (IS_RIPNG_DEBUG_RECV) | |
1385 | ripng_packet_dump (packet, len, "RECV"); | |
1386 | ||
1387 | /* Packet comes from unknown interface. */ | |
1388 | if (ifp == NULL) | |
1389 | { | |
1390 | zlog_warn ("RIPng packet comes from unknown interface %d", ifindex); | |
1391 | return 0; | |
1392 | } | |
1393 | ||
1394 | /* Packet version mismatch checking. */ | |
1395 | if (packet->version != ripng->version) | |
1396 | { | |
1397 | zlog_warn ("RIPng packet version %d doesn't fit to my version %d", | |
1398 | packet->version, ripng->version); | |
a94434b6 | 1399 | ripng_peer_bad_packet (&from); |
718e3744 | 1400 | return 0; |
1401 | } | |
1402 | ||
1403 | /* Process RIPng packet. */ | |
1404 | switch (packet->command) | |
1405 | { | |
1406 | case RIPNG_REQUEST: | |
1407 | ripng_request_process (packet, len, &from, ifp); | |
1408 | break; | |
1409 | case RIPNG_RESPONSE: | |
1410 | ripng_response_process (packet, len, &from, ifp, hoplimit); | |
1411 | break; | |
1412 | default: | |
1413 | zlog_warn ("Invalid RIPng command %d", packet->command); | |
a94434b6 | 1414 | ripng_peer_bad_packet (&from); |
718e3744 | 1415 | break; |
1416 | } | |
1417 | return 0; | |
1418 | } | |
1419 | ||
1420 | /* Walk down the RIPng routing table then clear changed flag. */ | |
6ac29a51 PJ |
1421 | static void |
1422 | ripng_clear_changed_flag (void) | |
718e3744 | 1423 | { |
1424 | struct route_node *rp; | |
1425 | struct ripng_info *rinfo; | |
1426 | ||
1427 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
1428 | if ((rinfo = rp->info) != NULL) | |
1429 | if (rinfo->flags & RIPNG_RTF_CHANGED) | |
1430 | rinfo->flags &= ~RIPNG_RTF_CHANGED; | |
1431 | } | |
1432 | ||
1433 | /* Regular update of RIPng route. Send all routing formation to RIPng | |
1434 | enabled interface. */ | |
6ac29a51 | 1435 | static int |
718e3744 | 1436 | ripng_update (struct thread *t) |
1437 | { | |
52dc7ee6 | 1438 | struct listnode *node; |
718e3744 | 1439 | struct interface *ifp; |
1440 | struct ripng_interface *ri; | |
1441 | ||
1442 | /* Clear update timer thread. */ | |
1443 | ripng->t_update = NULL; | |
1444 | ||
1445 | /* Logging update event. */ | |
1446 | if (IS_RIPNG_DEBUG_EVENT) | |
c6106812 | 1447 | zlog_debug ("RIPng update timer expired!"); |
718e3744 | 1448 | |
1449 | /* Supply routes to each interface. */ | |
1eb8ef25 | 1450 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
718e3744 | 1451 | { |
718e3744 | 1452 | ri = ifp->info; |
1453 | ||
1454 | if (if_is_loopback (ifp) || ! if_is_up (ifp)) | |
1455 | continue; | |
1456 | ||
1457 | if (! ri->running) | |
1458 | continue; | |
1459 | ||
1460 | /* When passive interface is specified, suppress announce to the | |
1461 | interface. */ | |
1462 | if (ri->passive) | |
1463 | continue; | |
1464 | ||
1465 | #if RIPNG_ADVANCED | |
1466 | if (ri->ri_send == RIPNG_SEND_OFF) | |
1467 | { | |
1468 | if (IS_RIPNG_DEBUG_EVENT) | |
c6106812 | 1469 | zlog (NULL, LOG_DEBUG, |
718e3744 | 1470 | "[Event] RIPng send to if %d is suppressed by config", |
1471 | ifp->ifindex); | |
1472 | continue; | |
1473 | } | |
1474 | #endif /* RIPNG_ADVANCED */ | |
1475 | ||
a94434b6 | 1476 | ripng_output_process (ifp, NULL, ripng_all_route); |
718e3744 | 1477 | } |
1478 | ||
1479 | /* Triggered updates may be suppressed if a regular update is due by | |
1480 | the time the triggered update would be sent. */ | |
1481 | if (ripng->t_triggered_interval) | |
1482 | { | |
1483 | thread_cancel (ripng->t_triggered_interval); | |
1484 | ripng->t_triggered_interval = NULL; | |
1485 | } | |
1486 | ripng->trigger = 0; | |
1487 | ||
1488 | /* Reset flush event. */ | |
1489 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
1490 | ||
1491 | return 0; | |
1492 | } | |
1493 | ||
1494 | /* Triggered update interval timer. */ | |
6ac29a51 | 1495 | static int |
718e3744 | 1496 | ripng_triggered_interval (struct thread *t) |
1497 | { | |
1498 | ripng->t_triggered_interval = NULL; | |
1499 | ||
1500 | if (ripng->trigger) | |
1501 | { | |
1502 | ripng->trigger = 0; | |
1503 | ripng_triggered_update (t); | |
1504 | } | |
1505 | return 0; | |
1506 | } | |
1507 | ||
1508 | /* Execute triggered update. */ | |
1509 | int | |
1510 | ripng_triggered_update (struct thread *t) | |
1511 | { | |
52dc7ee6 | 1512 | struct listnode *node; |
718e3744 | 1513 | struct interface *ifp; |
1514 | struct ripng_interface *ri; | |
1515 | int interval; | |
1516 | ||
1517 | ripng->t_triggered_update = NULL; | |
1518 | ||
1519 | /* Cancel interval timer. */ | |
1520 | if (ripng->t_triggered_interval) | |
1521 | { | |
1522 | thread_cancel (ripng->t_triggered_interval); | |
1523 | ripng->t_triggered_interval = NULL; | |
1524 | } | |
1525 | ripng->trigger = 0; | |
1526 | ||
1527 | /* Logging triggered update. */ | |
1528 | if (IS_RIPNG_DEBUG_EVENT) | |
c6106812 | 1529 | zlog_debug ("RIPng triggered update!"); |
718e3744 | 1530 | |
1531 | /* Split Horizon processing is done when generating triggered | |
1532 | updates as well as normal updates (see section 2.6). */ | |
1eb8ef25 | 1533 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
718e3744 | 1534 | { |
718e3744 | 1535 | ri = ifp->info; |
1536 | ||
1537 | if (if_is_loopback (ifp) || ! if_is_up (ifp)) | |
1538 | continue; | |
1539 | ||
1540 | if (! ri->running) | |
1541 | continue; | |
1542 | ||
1543 | /* When passive interface is specified, suppress announce to the | |
1544 | interface. */ | |
1545 | if (ri->passive) | |
1546 | continue; | |
1547 | ||
a94434b6 | 1548 | ripng_output_process (ifp, NULL, ripng_changed_route); |
718e3744 | 1549 | } |
1550 | ||
1551 | /* Once all of the triggered updates have been generated, the route | |
1552 | change flags should be cleared. */ | |
1553 | ripng_clear_changed_flag (); | |
1554 | ||
1555 | /* After a triggered update is sent, a timer should be set for a | |
1556 | random interval between 1 and 5 seconds. If other changes that | |
1557 | would trigger updates occur before the timer expires, a single | |
1558 | update is triggered when the timer expires. */ | |
1559 | interval = (random () % 5) + 1; | |
1560 | ||
1561 | ripng->t_triggered_interval = | |
1562 | thread_add_timer (master, ripng_triggered_interval, NULL, interval); | |
1563 | ||
1564 | return 0; | |
1565 | } | |
1566 | ||
1567 | /* Write routing table entry to the stream and return next index of | |
1568 | the routing table entry in the stream. */ | |
1569 | int | |
1570 | ripng_write_rte (int num, struct stream *s, struct prefix_ipv6 *p, | |
a94434b6 | 1571 | struct in6_addr *nexthop, u_int16_t tag, u_char metric) |
718e3744 | 1572 | { |
1573 | /* RIPng packet header. */ | |
1574 | if (num == 0) | |
1575 | { | |
1576 | stream_putc (s, RIPNG_RESPONSE); | |
1577 | stream_putc (s, RIPNG_V1); | |
1578 | stream_putw (s, 0); | |
1579 | } | |
1580 | ||
1581 | /* Write routing table entry. */ | |
a94434b6 | 1582 | if (!nexthop) |
c9e52be3 | 1583 | stream_write (s, (u_char *) &p->prefix, sizeof (struct in6_addr)); |
a94434b6 | 1584 | else |
c9e52be3 | 1585 | stream_write (s, (u_char *) nexthop, sizeof (struct in6_addr)); |
718e3744 | 1586 | stream_putw (s, tag); |
a94434b6 | 1587 | if (p) |
1588 | stream_putc (s, p->prefixlen); | |
1589 | else | |
1590 | stream_putc (s, 0); | |
718e3744 | 1591 | stream_putc (s, metric); |
1592 | ||
1593 | return ++num; | |
1594 | } | |
1595 | ||
1596 | /* Send RESPONSE message to specified destination. */ | |
1597 | void | |
1598 | ripng_output_process (struct interface *ifp, struct sockaddr_in6 *to, | |
a94434b6 | 1599 | int route_type) |
718e3744 | 1600 | { |
1601 | int ret; | |
718e3744 | 1602 | struct route_node *rp; |
1603 | struct ripng_info *rinfo; | |
1604 | struct ripng_interface *ri; | |
1605 | struct ripng_aggregate *aggregate; | |
1606 | struct prefix_ipv6 *p; | |
a94434b6 | 1607 | struct list * ripng_rte_list; |
718e3744 | 1608 | |
a94434b6 | 1609 | if (IS_RIPNG_DEBUG_EVENT) { |
1610 | if (to) | |
c6106812 | 1611 | zlog_debug ("RIPng update routes to neighbor %s", |
3a2ce6a1 | 1612 | inet6_ntoa(to->sin6_addr)); |
a94434b6 | 1613 | else |
c6106812 | 1614 | zlog_debug ("RIPng update routes on interface %s", ifp->name); |
a94434b6 | 1615 | } |
718e3744 | 1616 | |
718e3744 | 1617 | /* Get RIPng interface. */ |
1618 | ri = ifp->info; | |
a94434b6 | 1619 | |
1620 | ripng_rte_list = ripng_rte_new(); | |
1621 | ||
718e3744 | 1622 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) |
1623 | { | |
1624 | if ((rinfo = rp->info) != NULL && rinfo->suppress == 0) | |
1625 | { | |
a94434b6 | 1626 | /* If no route-map are applied, the RTE will be these following |
1627 | * informations. | |
1628 | */ | |
718e3744 | 1629 | p = (struct prefix_ipv6 *) &rp->p; |
a94434b6 | 1630 | rinfo->metric_out = rinfo->metric; |
1631 | rinfo->tag_out = rinfo->tag; | |
1632 | memset(&rinfo->nexthop_out, 0, sizeof(rinfo->nexthop_out)); | |
1633 | /* In order to avoid some local loops, | |
1634 | * if the RIPng route has a nexthop via this interface, keep the nexthop, | |
1635 | * otherwise set it to 0. The nexthop should not be propagated | |
1636 | * beyond the local broadcast/multicast area in order | |
1637 | * to avoid an IGP multi-level recursive look-up. | |
1638 | */ | |
1639 | if (rinfo->ifindex == ifp->ifindex) | |
1640 | rinfo->nexthop_out = rinfo->nexthop; | |
1641 | ||
1642 | /* Apply output filters. */ | |
1643 | ret = ripng_outgoing_filter (p, ri); | |
1644 | if (ret < 0) | |
1645 | continue; | |
718e3744 | 1646 | |
1647 | /* Changed route only output. */ | |
1648 | if (route_type == ripng_changed_route && | |
1649 | (! (rinfo->flags & RIPNG_RTF_CHANGED))) | |
1650 | continue; | |
1651 | ||
1652 | /* Split horizon. */ | |
a94434b6 | 1653 | if (ri->split_horizon == RIPNG_SPLIT_HORIZON) |
1654 | { | |
1655 | /* We perform split horizon for RIPng routes. */ | |
1656 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
1657 | rinfo->ifindex == ifp->ifindex) | |
1658 | continue; | |
1659 | } | |
718e3744 | 1660 | |
1661 | /* Preparation for route-map. */ | |
a94434b6 | 1662 | rinfo->metric_set = 0; |
1663 | /* nexthop_out, | |
1664 | * metric_out | |
1665 | * and tag_out are already initialized. | |
1666 | */ | |
718e3744 | 1667 | |
a94434b6 | 1668 | /* Interface route-map */ |
718e3744 | 1669 | if (ri->routemap[RIPNG_FILTER_OUT]) |
1670 | { | |
1671 | int ret; | |
718e3744 | 1672 | |
1673 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT], | |
1674 | (struct prefix *) p, RMAP_RIPNG, | |
a94434b6 | 1675 | rinfo); |
718e3744 | 1676 | |
1677 | if (ret == RMAP_DENYMATCH) | |
1678 | { | |
1679 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 1680 | zlog_debug ("RIPng %s/%d is filtered by route-map out", |
3a2ce6a1 | 1681 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 1682 | continue; |
718e3744 | 1683 | } |
1684 | ||
718e3744 | 1685 | } |
1686 | ||
a94434b6 | 1687 | /* Redistribute route-map. */ |
1688 | if (ripng->route_map[rinfo->type].name) | |
718e3744 | 1689 | { |
a94434b6 | 1690 | int ret; |
1691 | ||
1692 | ret = route_map_apply (ripng->route_map[rinfo->type].map, | |
1693 | (struct prefix *) p, RMAP_RIPNG, | |
bb3a023e | 1694 | rinfo); |
a94434b6 | 1695 | |
1696 | if (ret == RMAP_DENYMATCH) | |
718e3744 | 1697 | { |
a94434b6 | 1698 | if (IS_RIPNG_DEBUG_PACKET) |
c6106812 | 1699 | zlog_debug ("RIPng %s/%d is filtered by route-map", |
3a2ce6a1 | 1700 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 1701 | continue; |
718e3744 | 1702 | } |
a94434b6 | 1703 | } |
718e3744 | 1704 | |
a94434b6 | 1705 | /* When the route-map does not set metric. */ |
1706 | if (! rinfo->metric_set) | |
1707 | { | |
1708 | /* If the redistribute metric is set. */ | |
1709 | if (ripng->route_map[rinfo->type].metric_config | |
1710 | && rinfo->metric != RIPNG_METRIC_INFINITY) | |
1711 | { | |
1712 | rinfo->metric_out = ripng->route_map[rinfo->type].metric; | |
1713 | } | |
1714 | else | |
718e3744 | 1715 | { |
a94434b6 | 1716 | /* If the route is not connected or localy generated |
1717 | one, use default-metric value */ | |
1718 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
1719 | && rinfo->type != ZEBRA_ROUTE_CONNECT | |
718e3744 | 1720 | && rinfo->metric != RIPNG_METRIC_INFINITY) |
a94434b6 | 1721 | rinfo->metric_out = ripng->default_metric; |
718e3744 | 1722 | } |
1723 | } | |
1724 | ||
a94434b6 | 1725 | /* Apply offset-list */ |
1726 | if (rinfo->metric_out != RIPNG_METRIC_INFINITY) | |
1727 | ripng_offset_list_apply_out (p, ifp, &rinfo->metric_out); | |
1728 | ||
1729 | if (rinfo->metric_out > RIPNG_METRIC_INFINITY) | |
1730 | rinfo->metric_out = RIPNG_METRIC_INFINITY; | |
1731 | ||
1732 | /* Perform split-horizon with poisoned reverse | |
1733 | * for RIPng routes. | |
1734 | **/ | |
1735 | if (ri->split_horizon == RIPNG_SPLIT_HORIZON_POISONED_REVERSE) { | |
1736 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
1737 | rinfo->ifindex == ifp->ifindex) | |
1738 | rinfo->metric_out = RIPNG_METRIC_INFINITY; | |
1739 | } | |
1740 | ||
1741 | /* Add RTE to the list */ | |
1742 | ripng_rte_add(ripng_rte_list, p, rinfo, NULL); | |
718e3744 | 1743 | } |
a94434b6 | 1744 | |
1745 | /* Process the aggregated RTE entry */ | |
718e3744 | 1746 | if ((aggregate = rp->aggregate) != NULL && |
1747 | aggregate->count > 0 && | |
1748 | aggregate->suppress == 0) | |
1749 | { | |
a94434b6 | 1750 | /* If no route-map are applied, the RTE will be these following |
1751 | * informations. | |
1752 | */ | |
718e3744 | 1753 | p = (struct prefix_ipv6 *) &rp->p; |
a94434b6 | 1754 | aggregate->metric_set = 0; |
1755 | aggregate->metric_out = aggregate->metric; | |
1756 | aggregate->tag_out = aggregate->tag; | |
1757 | memset(&aggregate->nexthop_out, 0, sizeof(aggregate->nexthop_out)); | |
718e3744 | 1758 | |
1759 | /* Apply output filters.*/ | |
a94434b6 | 1760 | ret = ripng_outgoing_filter (p, ri); |
1761 | if (ret < 0) | |
1762 | continue; | |
718e3744 | 1763 | |
a94434b6 | 1764 | /* Interface route-map */ |
718e3744 | 1765 | if (ri->routemap[RIPNG_FILTER_OUT]) |
1766 | { | |
1767 | int ret; | |
1768 | struct ripng_info newinfo; | |
1769 | ||
a94434b6 | 1770 | /* let's cast the aggregate structure to ripng_info */ |
718e3744 | 1771 | memset (&newinfo, 0, sizeof (struct ripng_info)); |
a94434b6 | 1772 | /* the nexthop is :: */ |
1773 | newinfo.metric = aggregate->metric; | |
1774 | newinfo.metric_out = aggregate->metric_out; | |
1775 | newinfo.tag = aggregate->tag; | |
1776 | newinfo.tag_out = aggregate->tag_out; | |
718e3744 | 1777 | |
1778 | ret = route_map_apply (ri->routemap[RIPNG_FILTER_OUT], | |
1779 | (struct prefix *) p, RMAP_RIPNG, | |
1780 | &newinfo); | |
1781 | ||
1782 | if (ret == RMAP_DENYMATCH) | |
1783 | { | |
1784 | if (IS_RIPNG_DEBUG_PACKET) | |
c6106812 | 1785 | zlog_debug ("RIPng %s/%d is filtered by route-map out", |
3a2ce6a1 | 1786 | inet6_ntoa (p->prefix), p->prefixlen); |
a94434b6 | 1787 | continue; |
718e3744 | 1788 | } |
1789 | ||
a94434b6 | 1790 | aggregate->metric_out = newinfo.metric_out; |
1791 | aggregate->tag_out = newinfo.tag_out; | |
1792 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop_out)) | |
1793 | aggregate->nexthop_out = newinfo.nexthop_out; | |
718e3744 | 1794 | } |
1795 | ||
a94434b6 | 1796 | /* There is no redistribute routemap for the aggregated RTE */ |
1797 | ||
718e3744 | 1798 | /* Changed route only output. */ |
a94434b6 | 1799 | /* XXX, vincent, in order to increase time convergence, |
1800 | * it should be announced if a child has changed. | |
1801 | */ | |
718e3744 | 1802 | if (route_type == ripng_changed_route) |
1803 | continue; | |
1804 | ||
a94434b6 | 1805 | /* Apply offset-list */ |
1806 | if (aggregate->metric_out != RIPNG_METRIC_INFINITY) | |
1807 | ripng_offset_list_apply_out (p, ifp, &aggregate->metric_out); | |
1808 | ||
1809 | if (aggregate->metric_out > RIPNG_METRIC_INFINITY) | |
1810 | aggregate->metric_out = RIPNG_METRIC_INFINITY; | |
1811 | ||
1812 | /* Add RTE to the list */ | |
1813 | ripng_rte_add(ripng_rte_list, p, NULL, aggregate); | |
718e3744 | 1814 | } |
1815 | ||
1816 | } | |
718e3744 | 1817 | |
a94434b6 | 1818 | /* Flush the list */ |
1819 | ripng_rte_send(ripng_rte_list, ifp, to); | |
1820 | ripng_rte_free(ripng_rte_list); | |
718e3744 | 1821 | } |
1822 | ||
1823 | /* Create new RIPng instance and set it to global variable. */ | |
6ac29a51 PJ |
1824 | static int |
1825 | ripng_create (void) | |
718e3744 | 1826 | { |
1827 | /* ripng should be NULL. */ | |
1828 | assert (ripng == NULL); | |
1829 | ||
1830 | /* Allocaste RIPng instance. */ | |
393deb9b | 1831 | ripng = XCALLOC (MTYPE_RIPNG, sizeof (struct ripng)); |
718e3744 | 1832 | |
1833 | /* Default version and timer values. */ | |
1834 | ripng->version = RIPNG_V1; | |
1835 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
1836 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
1837 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
1838 | ripng->default_metric = RIPNG_DEFAULT_METRIC_DEFAULT; | |
1839 | ||
1840 | /* Make buffer. */ | |
1841 | ripng->ibuf = stream_new (RIPNG_MAX_PACKET_SIZE * 5); | |
1842 | ripng->obuf = stream_new (RIPNG_MAX_PACKET_SIZE); | |
1843 | ||
1844 | /* Initialize RIPng routig table. */ | |
1845 | ripng->table = route_table_init (); | |
1846 | ripng->route = route_table_init (); | |
1847 | ripng->aggregate = route_table_init (); | |
1848 | ||
1849 | /* Make socket. */ | |
1850 | ripng->sock = ripng_make_socket (); | |
1851 | if (ripng->sock < 0) | |
1852 | return ripng->sock; | |
1853 | ||
1854 | /* Threads. */ | |
1855 | ripng_event (RIPNG_READ, ripng->sock); | |
1856 | ripng_event (RIPNG_UPDATE_EVENT, 1); | |
1857 | ||
1858 | return 0; | |
1859 | } | |
1860 | ||
a94434b6 | 1861 | /* Send RIPng request to the interface. */ |
718e3744 | 1862 | int |
1863 | ripng_request (struct interface *ifp) | |
1864 | { | |
1865 | struct rte *rte; | |
1866 | struct ripng_packet ripng_packet; | |
1867 | ||
a94434b6 | 1868 | /* In default ripd doesn't send RIP_REQUEST to the loopback interface. */ |
1869 | if (if_is_loopback(ifp)) | |
1870 | return 0; | |
1871 | ||
1872 | /* If interface is down, don't send RIP packet. */ | |
1873 | if (! if_is_up (ifp)) | |
1874 | return 0; | |
1875 | ||
718e3744 | 1876 | if (IS_RIPNG_DEBUG_EVENT) |
c6106812 | 1877 | zlog_debug ("RIPng send request to %s", ifp->name); |
718e3744 | 1878 | |
1879 | memset (&ripng_packet, 0, sizeof (ripng_packet)); | |
1880 | ripng_packet.command = RIPNG_REQUEST; | |
1881 | ripng_packet.version = RIPNG_V1; | |
1882 | rte = ripng_packet.rte; | |
1883 | rte->metric = RIPNG_METRIC_INFINITY; | |
1884 | ||
1885 | return ripng_send_packet ((caddr_t) &ripng_packet, sizeof (ripng_packet), | |
1886 | NULL, ifp); | |
1887 | } | |
1888 | ||
718e3744 | 1889 | \f |
6ac29a51 | 1890 | static int |
718e3744 | 1891 | ripng_update_jitter (int time) |
1892 | { | |
1893 | return ((rand () % (time + 1)) - (time / 2)); | |
1894 | } | |
1895 | ||
1896 | void | |
1897 | ripng_event (enum ripng_event event, int sock) | |
1898 | { | |
718e3744 | 1899 | int jitter = 0; |
1900 | ||
1901 | switch (event) | |
1902 | { | |
1903 | case RIPNG_READ: | |
1904 | if (!ripng->t_read) | |
1905 | ripng->t_read = thread_add_read (master, ripng_read, NULL, sock); | |
1906 | break; | |
1907 | case RIPNG_UPDATE_EVENT: | |
1908 | if (ripng->t_update) | |
1909 | { | |
1910 | thread_cancel (ripng->t_update); | |
1911 | ripng->t_update = NULL; | |
1912 | } | |
1913 | /* Update timer jitter. */ | |
1914 | jitter = ripng_update_jitter (ripng->update_time); | |
1915 | ||
1916 | ripng->t_update = | |
1917 | thread_add_timer (master, ripng_update, NULL, | |
1918 | sock ? 2 : ripng->update_time + jitter); | |
1919 | break; | |
1920 | case RIPNG_TRIGGERED_UPDATE: | |
1921 | if (ripng->t_triggered_interval) | |
1922 | ripng->trigger = 1; | |
1923 | else if (! ripng->t_triggered_update) | |
1924 | ripng->t_triggered_update = | |
1925 | thread_add_event (master, ripng_triggered_update, NULL, 0); | |
1926 | break; | |
1927 | default: | |
1928 | break; | |
1929 | } | |
1930 | } | |
1931 | \f | |
718e3744 | 1932 | |
718e3744 | 1933 | /* Print out routes update time. */ |
1934 | static void | |
1935 | ripng_vty_out_uptime (struct vty *vty, struct ripng_info *rinfo) | |
1936 | { | |
718e3744 | 1937 | time_t clock; |
1938 | struct tm *tm; | |
1939 | #define TIME_BUF 25 | |
1940 | char timebuf [TIME_BUF]; | |
1941 | struct thread *thread; | |
1942 | ||
718e3744 | 1943 | if ((thread = rinfo->t_timeout) != 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 | else if ((thread = rinfo->t_garbage_collect) != NULL) | |
1951 | { | |
6dfa827b | 1952 | clock = thread_timer_remain_second (thread); |
718e3744 | 1953 | tm = gmtime (&clock); |
1954 | strftime (timebuf, TIME_BUF, "%M:%S", tm); | |
1955 | vty_out (vty, "%5s", timebuf); | |
1956 | } | |
1957 | } | |
1958 | ||
6ac29a51 | 1959 | static char * |
a94434b6 | 1960 | ripng_route_subtype_print (struct ripng_info *rinfo) |
1961 | { | |
1962 | static char str[3]; | |
1963 | memset(str, 0, 3); | |
1964 | ||
1965 | if (rinfo->suppress) | |
1966 | strcat(str, "S"); | |
1967 | ||
1968 | switch (rinfo->sub_type) | |
1969 | { | |
1970 | case RIPNG_ROUTE_RTE: | |
1971 | strcat(str, "n"); | |
1972 | break; | |
1973 | case RIPNG_ROUTE_STATIC: | |
1974 | strcat(str, "s"); | |
1975 | break; | |
1976 | case RIPNG_ROUTE_DEFAULT: | |
1977 | strcat(str, "d"); | |
1978 | break; | |
1979 | case RIPNG_ROUTE_REDISTRIBUTE: | |
1980 | strcat(str, "r"); | |
1981 | break; | |
1982 | case RIPNG_ROUTE_INTERFACE: | |
1983 | strcat(str, "i"); | |
1984 | break; | |
1985 | default: | |
1986 | strcat(str, "?"); | |
1987 | break; | |
1988 | } | |
1989 | ||
1990 | return str; | |
1991 | } | |
1992 | ||
718e3744 | 1993 | DEFUN (show_ipv6_ripng, |
1994 | show_ipv6_ripng_cmd, | |
1995 | "show ipv6 ripng", | |
1996 | SHOW_STR | |
8d0f15fd | 1997 | IPV6_STR |
718e3744 | 1998 | "Show RIPng routes\n") |
1999 | { | |
2000 | struct route_node *rp; | |
2001 | struct ripng_info *rinfo; | |
2002 | struct ripng_aggregate *aggregate; | |
2003 | struct prefix_ipv6 *p; | |
2004 | int len; | |
2005 | ||
a94434b6 | 2006 | if (! ripng) |
2007 | return CMD_SUCCESS; | |
2008 | ||
718e3744 | 2009 | /* Header of display. */ |
a94434b6 | 2010 | vty_out (vty, "Codes: R - RIPng, C - connected, S - Static, O - OSPF, B - BGP%s" |
2011 | "Sub-codes:%s" | |
2012 | " (n) - normal, (s) - static, (d) - default, (r) - redistribute,%s" | |
2013 | " (i) - interface, (a/S) - aggregated/Suppressed%s%s" | |
2014 | " Network Next Hop Via Metric Tag Time%s", | |
2015 | VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, | |
718e3744 | 2016 | VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE); |
2017 | ||
2018 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) | |
2019 | { | |
2020 | if ((aggregate = rp->aggregate) != NULL) | |
2021 | { | |
2022 | p = (struct prefix_ipv6 *) &rp->p; | |
2023 | ||
2024 | #ifdef DEBUG | |
a94434b6 | 2025 | len = vty_out (vty, "R(a) %d/%d %s/%d ", |
718e3744 | 2026 | aggregate->count, aggregate->suppress, |
3a2ce6a1 | 2027 | inet6_ntoa (p->prefix), p->prefixlen); |
718e3744 | 2028 | #else |
a94434b6 | 2029 | len = vty_out (vty, "R(a) %s/%d ", |
3a2ce6a1 | 2030 | inet6_ntoa (p->prefix), p->prefixlen); |
718e3744 | 2031 | #endif /* DEBUG */ |
a94434b6 | 2032 | vty_out (vty, "%s", VTY_NEWLINE); |
2033 | vty_out (vty, "%*s", 18, " "); | |
718e3744 | 2034 | |
a94434b6 | 2035 | vty_out (vty, "%*s", 28, " "); |
2036 | vty_out (vty, "self %2d %3d%s", aggregate->metric, | |
718e3744 | 2037 | aggregate->tag, |
2038 | VTY_NEWLINE); | |
2039 | } | |
2040 | ||
2041 | if ((rinfo = rp->info) != NULL) | |
2042 | { | |
2043 | p = (struct prefix_ipv6 *) &rp->p; | |
2044 | ||
2045 | #ifdef DEBUG | |
f52d13cb | 2046 | len = vty_out (vty, "%c(%s) 0/%d %s/%d ", |
2047 | zebra_route_char(rinfo->type), | |
a94434b6 | 2048 | ripng_route_subtype_print(rinfo), |
718e3744 | 2049 | rinfo->suppress, |
3a2ce6a1 | 2050 | inet6_ntoa (p->prefix), p->prefixlen); |
718e3744 | 2051 | #else |
f52d13cb | 2052 | len = vty_out (vty, "%c(%s) %s/%d ", |
2053 | zebra_route_char(rinfo->type), | |
a94434b6 | 2054 | ripng_route_subtype_print(rinfo), |
3a2ce6a1 | 2055 | inet6_ntoa (p->prefix), p->prefixlen); |
718e3744 | 2056 | #endif /* DEBUG */ |
a94434b6 | 2057 | vty_out (vty, "%s", VTY_NEWLINE); |
2058 | vty_out (vty, "%*s", 18, " "); | |
3a2ce6a1 | 2059 | len = vty_out (vty, "%s", inet6_ntoa (rinfo->nexthop)); |
a94434b6 | 2060 | |
2061 | len = 28 - len; | |
718e3744 | 2062 | if (len > 0) |
a94434b6 | 2063 | len = vty_out (vty, "%*s", len, " "); |
718e3744 | 2064 | |
a94434b6 | 2065 | /* from */ |
2066 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
2067 | (rinfo->sub_type == RIPNG_ROUTE_RTE)) | |
2068 | { | |
2069 | len = vty_out (vty, "%s", ifindex2ifname(rinfo->ifindex)); | |
2070 | } else if (rinfo->metric == RIPNG_METRIC_INFINITY) | |
2071 | { | |
2072 | len = vty_out (vty, "kill"); | |
2073 | } else | |
2074 | len = vty_out (vty, "self"); | |
718e3744 | 2075 | |
a94434b6 | 2076 | len = 9 - len; |
718e3744 | 2077 | if (len > 0) |
2078 | vty_out (vty, "%*s", len, " "); | |
2079 | ||
a94434b6 | 2080 | vty_out (vty, " %2d %3d ", |
2081 | rinfo->metric, rinfo->tag); | |
718e3744 | 2082 | |
a94434b6 | 2083 | /* time */ |
2084 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
2085 | (rinfo->sub_type == RIPNG_ROUTE_RTE)) | |
2086 | { | |
2087 | /* RTE from remote RIP routers */ | |
718e3744 | 2088 | ripng_vty_out_uptime (vty, rinfo); |
a94434b6 | 2089 | } else if (rinfo->metric == RIPNG_METRIC_INFINITY) |
2090 | { | |
2091 | /* poisonous reversed routes (gc) */ | |
2092 | ripng_vty_out_uptime (vty, rinfo); | |
2093 | } | |
718e3744 | 2094 | |
2095 | vty_out (vty, "%s", VTY_NEWLINE); | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | return CMD_SUCCESS; | |
2100 | } | |
2101 | ||
a94434b6 | 2102 | DEFUN (show_ipv6_ripng_status, |
2103 | show_ipv6_ripng_status_cmd, | |
2104 | "show ipv6 ripng status", | |
2105 | SHOW_STR | |
8d0f15fd | 2106 | IPV6_STR |
a94434b6 | 2107 | "Show RIPng routes\n" |
2108 | "IPv6 routing protocol process parameters and statistics\n") | |
2109 | { | |
52dc7ee6 | 2110 | struct listnode *node; |
1eb8ef25 | 2111 | struct interface *ifp; |
a94434b6 | 2112 | |
2113 | if (! ripng) | |
2114 | return CMD_SUCCESS; | |
2115 | ||
2116 | vty_out (vty, "Routing Protocol is \"RIPng\"%s", VTY_NEWLINE); | |
2117 | vty_out (vty, " Sending updates every %ld seconds with +/-50%%,", | |
2118 | ripng->update_time); | |
6dfa827b VJ |
2119 | vty_out (vty, " next due in %lu seconds%s", |
2120 | thread_timer_remain_second (ripng->t_update), | |
a94434b6 | 2121 | VTY_NEWLINE); |
2122 | vty_out (vty, " Timeout after %ld seconds,", ripng->timeout_time); | |
2123 | vty_out (vty, " garbage collect after %ld seconds%s", ripng->garbage_time, | |
2124 | VTY_NEWLINE); | |
2125 | ||
2126 | /* Filtering status show. */ | |
2127 | config_show_distribute (vty); | |
2128 | ||
2129 | /* Default metric information. */ | |
2130 | vty_out (vty, " Default redistribution metric is %d%s", | |
2131 | ripng->default_metric, VTY_NEWLINE); | |
2132 | ||
2133 | /* Redistribute information. */ | |
2134 | vty_out (vty, " Redistributing:"); | |
2135 | ripng_redistribute_write (vty, 0); | |
2136 | vty_out (vty, "%s", VTY_NEWLINE); | |
2137 | ||
2138 | vty_out (vty, " Default version control: send version %d,", ripng->version); | |
2139 | vty_out (vty, " receive version %d %s", ripng->version, | |
2140 | VTY_NEWLINE); | |
2141 | ||
2142 | vty_out (vty, " Interface Send Recv%s", VTY_NEWLINE); | |
2143 | ||
1eb8ef25 | 2144 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
a94434b6 | 2145 | { |
2146 | struct ripng_interface *ri; | |
1eb8ef25 | 2147 | |
a94434b6 | 2148 | ri = ifp->info; |
2149 | ||
2150 | if (ri->enable_network || ri->enable_interface) | |
2151 | { | |
2152 | ||
2153 | vty_out (vty, " %-17s%-3d %-3d%s", ifp->name, | |
2154 | ripng->version, | |
2155 | ripng->version, | |
2156 | VTY_NEWLINE); | |
2157 | } | |
2158 | } | |
2159 | ||
2160 | vty_out (vty, " Routing for Networks:%s", VTY_NEWLINE); | |
2161 | ripng_network_write (vty, 0); | |
2162 | ||
2163 | vty_out (vty, " Routing Information Sources:%s", VTY_NEWLINE); | |
2164 | vty_out (vty, " Gateway BadPackets BadRoutes Distance Last Update%s", VTY_NEWLINE); | |
2165 | ripng_peer_display (vty); | |
2166 | ||
2167 | return CMD_SUCCESS; | |
2168 | } | |
2169 | ||
718e3744 | 2170 | DEFUN (router_ripng, |
2171 | router_ripng_cmd, | |
2172 | "router ripng", | |
2173 | "Enable a routing process\n" | |
2174 | "Make RIPng instance command\n") | |
2175 | { | |
2176 | int ret; | |
2177 | ||
2178 | vty->node = RIPNG_NODE; | |
2179 | ||
2180 | if (!ripng) | |
2181 | { | |
2182 | ret = ripng_create (); | |
2183 | ||
2184 | /* Notice to user we couldn't create RIPng. */ | |
2185 | if (ret < 0) | |
2186 | { | |
2187 | zlog_warn ("can't create RIPng"); | |
2188 | return CMD_WARNING; | |
2189 | } | |
2190 | } | |
2191 | ||
2192 | return CMD_SUCCESS; | |
2193 | } | |
2194 | ||
a94434b6 | 2195 | DEFUN (no_router_ripng, |
2196 | no_router_ripng_cmd, | |
2197 | "no router ripng", | |
2198 | NO_STR | |
2199 | "Enable a routing process\n" | |
2200 | "Make RIPng instance command\n") | |
2201 | { | |
2202 | if(ripng) | |
2203 | ripng_clean(); | |
2204 | return CMD_SUCCESS; | |
2205 | } | |
2206 | ||
718e3744 | 2207 | DEFUN (ripng_route, |
2208 | ripng_route_cmd, | |
2209 | "route IPV6ADDR", | |
2210 | "Static route setup\n" | |
2211 | "Set static RIPng route announcement\n") | |
2212 | { | |
2213 | int ret; | |
2214 | struct prefix_ipv6 p; | |
2215 | struct route_node *rp; | |
2216 | ||
2217 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
2218 | if (ret <= 0) | |
2219 | { | |
2220 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2221 | return CMD_WARNING; | |
2222 | } | |
2223 | apply_mask_ipv6 (&p); | |
2224 | ||
2225 | rp = route_node_get (ripng->route, (struct prefix *) &p); | |
2226 | if (rp->info) | |
2227 | { | |
2228 | vty_out (vty, "There is already same static route.%s", VTY_NEWLINE); | |
2229 | route_unlock_node (rp); | |
2230 | return CMD_WARNING; | |
2231 | } | |
2232 | rp->info = (void *)1; | |
2233 | ||
a94434b6 | 2234 | ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0, NULL); |
718e3744 | 2235 | |
2236 | return CMD_SUCCESS; | |
2237 | } | |
2238 | ||
2239 | DEFUN (no_ripng_route, | |
2240 | no_ripng_route_cmd, | |
2241 | "no route IPV6ADDR", | |
2242 | NO_STR | |
2243 | "Static route setup\n" | |
2244 | "Delete static RIPng route announcement\n") | |
2245 | { | |
2246 | int ret; | |
2247 | struct prefix_ipv6 p; | |
2248 | struct route_node *rp; | |
2249 | ||
2250 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
2251 | if (ret <= 0) | |
2252 | { | |
2253 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2254 | return CMD_WARNING; | |
2255 | } | |
2256 | apply_mask_ipv6 (&p); | |
2257 | ||
2258 | rp = route_node_lookup (ripng->route, (struct prefix *) &p); | |
2259 | if (! rp) | |
2260 | { | |
2261 | vty_out (vty, "Can't find static route.%s", VTY_NEWLINE); | |
2262 | return CMD_WARNING; | |
2263 | } | |
2264 | ||
2265 | ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0); | |
2266 | route_unlock_node (rp); | |
2267 | ||
2268 | rp->info = NULL; | |
2269 | route_unlock_node (rp); | |
2270 | ||
2271 | return CMD_SUCCESS; | |
2272 | } | |
2273 | ||
2274 | DEFUN (ripng_aggregate_address, | |
2275 | ripng_aggregate_address_cmd, | |
2276 | "aggregate-address X:X::X:X/M", | |
2277 | "Set aggregate RIPng route announcement\n" | |
2278 | "Aggregate network\n") | |
2279 | { | |
2280 | int ret; | |
2281 | struct prefix p; | |
2282 | struct route_node *node; | |
2283 | ||
2284 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *)&p); | |
2285 | if (ret <= 0) | |
2286 | { | |
2287 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2288 | return CMD_WARNING; | |
2289 | } | |
2290 | ||
2291 | /* Check aggregate alredy exist or not. */ | |
2292 | node = route_node_get (ripng->aggregate, &p); | |
2293 | if (node->info) | |
2294 | { | |
2295 | vty_out (vty, "There is already same aggregate route.%s", VTY_NEWLINE); | |
2296 | route_unlock_node (node); | |
2297 | return CMD_WARNING; | |
2298 | } | |
2299 | node->info = (void *)1; | |
2300 | ||
2301 | ripng_aggregate_add (&p); | |
2302 | ||
2303 | return CMD_SUCCESS; | |
2304 | } | |
2305 | ||
2306 | DEFUN (no_ripng_aggregate_address, | |
2307 | no_ripng_aggregate_address_cmd, | |
2308 | "no aggregate-address X:X::X:X/M", | |
2309 | NO_STR | |
2310 | "Delete aggregate RIPng route announcement\n" | |
2311 | "Aggregate network") | |
2312 | { | |
2313 | int ret; | |
2314 | struct prefix p; | |
2315 | struct route_node *rn; | |
2316 | ||
2317 | ret = str2prefix_ipv6 (argv[0], (struct prefix_ipv6 *) &p); | |
2318 | if (ret <= 0) | |
2319 | { | |
2320 | vty_out (vty, "Malformed address%s", VTY_NEWLINE); | |
2321 | return CMD_WARNING; | |
2322 | } | |
2323 | ||
2324 | rn = route_node_lookup (ripng->aggregate, &p); | |
2325 | if (! rn) | |
2326 | { | |
2327 | vty_out (vty, "Can't find aggregate route.%s", VTY_NEWLINE); | |
2328 | return CMD_WARNING; | |
2329 | } | |
2330 | route_unlock_node (rn); | |
2331 | rn->info = NULL; | |
2332 | route_unlock_node (rn); | |
2333 | ||
2334 | ripng_aggregate_delete (&p); | |
2335 | ||
2336 | return CMD_SUCCESS; | |
2337 | } | |
2338 | ||
2339 | DEFUN (ripng_default_metric, | |
2340 | ripng_default_metric_cmd, | |
2341 | "default-metric <1-16>", | |
2342 | "Set a metric of redistribute routes\n" | |
2343 | "Default metric\n") | |
2344 | { | |
2345 | if (ripng) | |
2346 | { | |
2347 | ripng->default_metric = atoi (argv[0]); | |
2348 | } | |
2349 | return CMD_SUCCESS; | |
2350 | } | |
2351 | ||
2352 | DEFUN (no_ripng_default_metric, | |
2353 | no_ripng_default_metric_cmd, | |
2354 | "no default-metric", | |
2355 | NO_STR | |
2356 | "Set a metric of redistribute routes\n" | |
2357 | "Default metric\n") | |
2358 | { | |
2359 | if (ripng) | |
2360 | { | |
2361 | ripng->default_metric = RIPNG_DEFAULT_METRIC_DEFAULT; | |
2362 | } | |
2363 | return CMD_SUCCESS; | |
2364 | } | |
2365 | ||
2366 | ALIAS (no_ripng_default_metric, | |
2367 | no_ripng_default_metric_val_cmd, | |
2368 | "no default-metric <1-16>", | |
2369 | NO_STR | |
2370 | "Set a metric of redistribute routes\n" | |
2371 | "Default metric\n") | |
2372 | ||
2373 | #if 0 | |
2374 | /* RIPng update timer setup. */ | |
2375 | DEFUN (ripng_update_timer, | |
2376 | ripng_update_timer_cmd, | |
2377 | "update-timer SECOND", | |
2378 | "Set RIPng update timer in seconds\n" | |
2379 | "Seconds\n") | |
2380 | { | |
2381 | unsigned long update; | |
2382 | char *endptr = NULL; | |
2383 | ||
2384 | update = strtoul (argv[0], &endptr, 10); | |
2385 | if (update == ULONG_MAX || *endptr != '\0') | |
2386 | { | |
2387 | vty_out (vty, "update timer value error%s", VTY_NEWLINE); | |
2388 | return CMD_WARNING; | |
2389 | } | |
2390 | ||
2391 | ripng->update_time = update; | |
2392 | ||
2393 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2394 | return CMD_SUCCESS; | |
2395 | } | |
2396 | ||
2397 | DEFUN (no_ripng_update_timer, | |
2398 | no_ripng_update_timer_cmd, | |
2399 | "no update-timer SECOND", | |
2400 | NO_STR | |
2401 | "Unset RIPng update timer in seconds\n" | |
2402 | "Seconds\n") | |
2403 | { | |
2404 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2405 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2406 | return CMD_SUCCESS; | |
2407 | } | |
2408 | ||
2409 | /* RIPng timeout timer setup. */ | |
2410 | DEFUN (ripng_timeout_timer, | |
2411 | ripng_timeout_timer_cmd, | |
2412 | "timeout-timer SECOND", | |
2413 | "Set RIPng timeout timer in seconds\n" | |
2414 | "Seconds\n") | |
2415 | { | |
2416 | unsigned long timeout; | |
2417 | char *endptr = NULL; | |
2418 | ||
2419 | timeout = strtoul (argv[0], &endptr, 10); | |
2420 | if (timeout == ULONG_MAX || *endptr != '\0') | |
2421 | { | |
2422 | vty_out (vty, "timeout timer value error%s", VTY_NEWLINE); | |
2423 | return CMD_WARNING; | |
2424 | } | |
2425 | ||
2426 | ripng->timeout_time = timeout; | |
2427 | ||
2428 | return CMD_SUCCESS; | |
2429 | } | |
2430 | ||
2431 | DEFUN (no_ripng_timeout_timer, | |
2432 | no_ripng_timeout_timer_cmd, | |
2433 | "no timeout-timer SECOND", | |
2434 | NO_STR | |
2435 | "Unset RIPng timeout timer in seconds\n" | |
2436 | "Seconds\n") | |
2437 | { | |
2438 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2439 | return CMD_SUCCESS; | |
2440 | } | |
2441 | ||
2442 | /* RIPng garbage timer setup. */ | |
2443 | DEFUN (ripng_garbage_timer, | |
2444 | ripng_garbage_timer_cmd, | |
2445 | "garbage-timer SECOND", | |
2446 | "Set RIPng garbage timer in seconds\n" | |
2447 | "Seconds\n") | |
2448 | { | |
2449 | unsigned long garbage; | |
2450 | char *endptr = NULL; | |
2451 | ||
2452 | garbage = strtoul (argv[0], &endptr, 10); | |
2453 | if (garbage == ULONG_MAX || *endptr != '\0') | |
2454 | { | |
2455 | vty_out (vty, "garbage timer value error%s", VTY_NEWLINE); | |
2456 | return CMD_WARNING; | |
2457 | } | |
2458 | ||
2459 | ripng->garbage_time = garbage; | |
2460 | ||
2461 | return CMD_SUCCESS; | |
2462 | } | |
2463 | ||
2464 | DEFUN (no_ripng_garbage_timer, | |
2465 | no_ripng_garbage_timer_cmd, | |
2466 | "no garbage-timer SECOND", | |
2467 | NO_STR | |
2468 | "Unset RIPng garbage timer in seconds\n" | |
2469 | "Seconds\n") | |
2470 | { | |
2471 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2472 | return CMD_SUCCESS; | |
2473 | } | |
2474 | #endif /* 0 */ | |
2475 | ||
2476 | DEFUN (ripng_timers, | |
2477 | ripng_timers_cmd, | |
2478 | "timers basic <0-65535> <0-65535> <0-65535>", | |
2479 | "RIPng timers setup\n" | |
2480 | "Basic timer\n" | |
2481 | "Routing table update timer value in second. Default is 30.\n" | |
2482 | "Routing information timeout timer. Default is 180.\n" | |
2483 | "Garbage collection timer. Default is 120.\n") | |
2484 | { | |
2485 | unsigned long update; | |
2486 | unsigned long timeout; | |
2487 | unsigned long garbage; | |
718e3744 | 2488 | |
6989880a UW |
2489 | VTY_GET_INTEGER_RANGE("update timer", update, argv[0], 0, 65535); |
2490 | VTY_GET_INTEGER_RANGE("timeout timer", timeout, argv[1], 0, 65535); | |
2491 | VTY_GET_INTEGER_RANGE("garbage timer", garbage, argv[2], 0, 65535); | |
718e3744 | 2492 | |
2493 | /* Set each timer value. */ | |
2494 | ripng->update_time = update; | |
2495 | ripng->timeout_time = timeout; | |
2496 | ripng->garbage_time = garbage; | |
2497 | ||
2498 | /* Reset update timer thread. */ | |
2499 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2500 | ||
2501 | return CMD_SUCCESS; | |
2502 | } | |
2503 | ||
2504 | DEFUN (no_ripng_timers, | |
2505 | no_ripng_timers_cmd, | |
2506 | "no timers basic", | |
2507 | NO_STR | |
2508 | "RIPng timers setup\n" | |
2509 | "Basic timer\n") | |
2510 | { | |
2511 | /* Set each timer value to the default. */ | |
2512 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2513 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2514 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2515 | ||
2516 | /* Reset update timer thread. */ | |
2517 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2518 | ||
2519 | return CMD_SUCCESS; | |
2520 | } | |
2521 | ||
a94434b6 | 2522 | ALIAS (no_ripng_timers, |
2523 | no_ripng_timers_val_cmd, | |
2524 | "no timers basic <0-65535> <0-65535> <0-65535>", | |
2525 | NO_STR | |
2526 | "RIPng timers setup\n" | |
2527 | "Basic timer\n" | |
2528 | "Routing table update timer value in second. Default is 30.\n" | |
2529 | "Routing information timeout timer. Default is 180.\n" | |
2530 | "Garbage collection timer. Default is 120.\n") | |
718e3744 | 2531 | |
2532 | DEFUN (show_ipv6_protocols, show_ipv6_protocols_cmd, | |
2533 | "show ipv6 protocols", | |
2534 | SHOW_STR | |
8d0f15fd | 2535 | IPV6_STR |
718e3744 | 2536 | "Routing protocol information") |
2537 | { | |
2538 | if (! ripng) | |
2539 | return CMD_SUCCESS; | |
2540 | ||
2541 | vty_out (vty, "Routing Protocol is \"ripng\"%s", VTY_NEWLINE); | |
2542 | ||
2543 | vty_out (vty, "Sending updates every %ld seconds, next due in %d seconds%s", | |
2544 | ripng->update_time, 0, | |
2545 | VTY_NEWLINE); | |
2546 | ||
2547 | vty_out (vty, "Timerout after %ld seconds, garbage correct %ld%s", | |
2548 | ripng->timeout_time, | |
2549 | ripng->garbage_time, | |
2550 | VTY_NEWLINE); | |
2551 | ||
2552 | vty_out (vty, "Outgoing update filter list for all interfaces is not set"); | |
2553 | vty_out (vty, "Incoming update filter list for all interfaces is not set"); | |
2554 | ||
2555 | return CMD_SUCCESS; | |
2556 | } | |
2557 | ||
2558 | /* Please be carefull to use this command. */ | |
a2c62831 | 2559 | DEFUN (ripng_default_information_originate, |
2560 | ripng_default_information_originate_cmd, | |
718e3744 | 2561 | "default-information originate", |
2562 | "Default route information\n" | |
2563 | "Distribute default route\n") | |
2564 | { | |
2565 | struct prefix_ipv6 p; | |
2566 | ||
a94434b6 | 2567 | if (! ripng ->default_information) { |
2568 | ripng->default_information = 1; | |
718e3744 | 2569 | |
a94434b6 | 2570 | str2prefix_ipv6 ("::/0", &p); |
2571 | ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_DEFAULT, &p, 0, NULL); | |
2572 | } | |
718e3744 | 2573 | |
2574 | return CMD_SUCCESS; | |
2575 | } | |
2576 | ||
a2c62831 | 2577 | DEFUN (no_ripng_default_information_originate, |
2578 | no_ripng_default_information_originate_cmd, | |
718e3744 | 2579 | "no default-information originate", |
2580 | NO_STR | |
2581 | "Default route information\n" | |
2582 | "Distribute default route\n") | |
2583 | { | |
2584 | struct prefix_ipv6 p; | |
2585 | ||
a94434b6 | 2586 | if (ripng->default_information) { |
2587 | ripng->default_information = 0; | |
718e3744 | 2588 | |
a94434b6 | 2589 | str2prefix_ipv6 ("::/0", &p); |
2590 | ripng_redistribute_delete (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_DEFAULT, &p, 0); | |
2591 | } | |
718e3744 | 2592 | |
2593 | return CMD_SUCCESS; | |
2594 | } | |
2595 | ||
2596 | /* RIPng configuration write function. */ | |
6ac29a51 | 2597 | static int |
718e3744 | 2598 | ripng_config_write (struct vty *vty) |
2599 | { | |
a94434b6 | 2600 | int ripng_network_write (struct vty *, int); |
2601 | void ripng_redistribute_write (struct vty *, int); | |
718e3744 | 2602 | int write = 0; |
2603 | struct route_node *rp; | |
2604 | ||
2605 | if (ripng) | |
2606 | { | |
2607 | ||
2608 | /* RIPng router. */ | |
2609 | vty_out (vty, "router ripng%s", VTY_NEWLINE); | |
2610 | ||
2611 | if (ripng->default_information) | |
2612 | vty_out (vty, " default-information originate%s", VTY_NEWLINE); | |
2613 | ||
a94434b6 | 2614 | ripng_network_write (vty, 1); |
718e3744 | 2615 | |
2616 | /* RIPng default metric configuration */ | |
2617 | if (ripng->default_metric != RIPNG_DEFAULT_METRIC_DEFAULT) | |
2618 | vty_out (vty, " default-metric %d%s", | |
2619 | ripng->default_metric, VTY_NEWLINE); | |
2620 | ||
a94434b6 | 2621 | ripng_redistribute_write (vty, 1); |
2622 | ||
2623 | /* RIP offset-list configuration. */ | |
2624 | config_write_ripng_offset_list (vty); | |
718e3744 | 2625 | |
2626 | /* RIPng aggregate routes. */ | |
2627 | for (rp = route_top (ripng->aggregate); rp; rp = route_next (rp)) | |
2628 | if (rp->info != NULL) | |
2629 | vty_out (vty, " aggregate-address %s/%d%s", | |
3a2ce6a1 | 2630 | inet6_ntoa (rp->p.u.prefix6), |
718e3744 | 2631 | rp->p.prefixlen, |
2632 | ||
2633 | VTY_NEWLINE); | |
2634 | ||
2635 | /* RIPng static routes. */ | |
2636 | for (rp = route_top (ripng->route); rp; rp = route_next (rp)) | |
2637 | if (rp->info != NULL) | |
3a2ce6a1 | 2638 | vty_out (vty, " route %s/%d%s", inet6_ntoa (rp->p.u.prefix6), |
718e3744 | 2639 | rp->p.prefixlen, |
2640 | VTY_NEWLINE); | |
2641 | ||
2642 | /* RIPng timers configuration. */ | |
2643 | if (ripng->update_time != RIPNG_UPDATE_TIMER_DEFAULT || | |
2644 | ripng->timeout_time != RIPNG_TIMEOUT_TIMER_DEFAULT || | |
2645 | ripng->garbage_time != RIPNG_GARBAGE_TIMER_DEFAULT) | |
2646 | { | |
2647 | vty_out (vty, " timers basic %ld %ld %ld%s", | |
2648 | ripng->update_time, | |
2649 | ripng->timeout_time, | |
2650 | ripng->garbage_time, | |
2651 | VTY_NEWLINE); | |
2652 | } | |
2653 | #if 0 | |
2654 | if (ripng->update_time != RIPNG_UPDATE_TIMER_DEFAULT) | |
2655 | vty_out (vty, " update-timer %d%s", ripng->update_time, | |
2656 | VTY_NEWLINE); | |
2657 | if (ripng->timeout_time != RIPNG_TIMEOUT_TIMER_DEFAULT) | |
2658 | vty_out (vty, " timeout-timer %d%s", ripng->timeout_time, | |
2659 | VTY_NEWLINE); | |
2660 | if (ripng->garbage_time != RIPNG_GARBAGE_TIMER_DEFAULT) | |
2661 | vty_out (vty, " garbage-timer %d%s", ripng->garbage_time, | |
2662 | VTY_NEWLINE); | |
2663 | #endif /* 0 */ | |
2664 | ||
2665 | write += config_write_distribute (vty); | |
2666 | ||
2667 | write += config_write_if_rmap (vty); | |
2668 | ||
2669 | write++; | |
2670 | } | |
2671 | return write; | |
2672 | } | |
2673 | ||
2674 | /* RIPng node structure. */ | |
7fc626de | 2675 | static struct cmd_node cmd_ripng_node = |
718e3744 | 2676 | { |
2677 | RIPNG_NODE, | |
2678 | "%s(config-router)# ", | |
2679 | 1, | |
2680 | }; | |
2681 | ||
6ac29a51 | 2682 | static void |
718e3744 | 2683 | ripng_distribute_update (struct distribute *dist) |
2684 | { | |
2685 | struct interface *ifp; | |
2686 | struct ripng_interface *ri; | |
2687 | struct access_list *alist; | |
2688 | struct prefix_list *plist; | |
2689 | ||
2690 | if (! dist->ifname) | |
2691 | return; | |
2692 | ||
2693 | ifp = if_lookup_by_name (dist->ifname); | |
2694 | if (ifp == NULL) | |
2695 | return; | |
2696 | ||
2697 | ri = ifp->info; | |
2698 | ||
2699 | if (dist->list[DISTRIBUTE_IN]) | |
2700 | { | |
2701 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_IN]); | |
2702 | if (alist) | |
2703 | ri->list[RIPNG_FILTER_IN] = alist; | |
2704 | else | |
2705 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2706 | } | |
2707 | else | |
2708 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2709 | ||
2710 | if (dist->list[DISTRIBUTE_OUT]) | |
2711 | { | |
2712 | alist = access_list_lookup (AFI_IP6, dist->list[DISTRIBUTE_OUT]); | |
2713 | if (alist) | |
2714 | ri->list[RIPNG_FILTER_OUT] = alist; | |
2715 | else | |
2716 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2717 | } | |
2718 | else | |
2719 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2720 | ||
2721 | if (dist->prefix[DISTRIBUTE_IN]) | |
2722 | { | |
2723 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_IN]); | |
2724 | if (plist) | |
2725 | ri->prefix[RIPNG_FILTER_IN] = plist; | |
2726 | else | |
2727 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2728 | } | |
2729 | else | |
2730 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2731 | ||
2732 | if (dist->prefix[DISTRIBUTE_OUT]) | |
2733 | { | |
2734 | plist = prefix_list_lookup (AFI_IP6, dist->prefix[DISTRIBUTE_OUT]); | |
2735 | if (plist) | |
2736 | ri->prefix[RIPNG_FILTER_OUT] = plist; | |
2737 | else | |
2738 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2739 | } | |
2740 | else | |
2741 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2742 | } | |
a94434b6 | 2743 | |
718e3744 | 2744 | void |
2745 | ripng_distribute_update_interface (struct interface *ifp) | |
2746 | { | |
2747 | struct distribute *dist; | |
2748 | ||
2749 | dist = distribute_lookup (ifp->name); | |
2750 | if (dist) | |
2751 | ripng_distribute_update (dist); | |
2752 | } | |
2753 | ||
2754 | /* Update all interface's distribute list. */ | |
6ac29a51 | 2755 | static void |
c9e52be3 | 2756 | ripng_distribute_update_all (struct prefix_list *notused) |
718e3744 | 2757 | { |
2758 | struct interface *ifp; | |
52dc7ee6 | 2759 | struct listnode *node; |
718e3744 | 2760 | |
1eb8ef25 | 2761 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
2762 | ripng_distribute_update_interface (ifp); | |
718e3744 | 2763 | } |
c9e52be3 | 2764 | |
6ac29a51 | 2765 | static void |
c9e52be3 | 2766 | ripng_distribute_update_all_wrapper (struct access_list *notused) |
2767 | { | |
2768 | ripng_distribute_update_all(NULL); | |
2769 | } | |
a94434b6 | 2770 | \f |
2771 | /* delete all the added ripng routes. */ | |
2772 | void | |
2773 | ripng_clean() | |
2774 | { | |
2775 | int i; | |
2776 | struct route_node *rp; | |
2777 | struct ripng_info *rinfo; | |
2778 | ||
2779 | if (ripng) { | |
2780 | /* Clear RIPng routes */ | |
2781 | for (rp = route_top (ripng->table); rp; rp = route_next (rp)) { | |
2782 | if ((rinfo = rp->info) != NULL) { | |
2783 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) && | |
2784 | (rinfo->sub_type == RIPNG_ROUTE_RTE)) | |
2785 | ripng_zebra_ipv6_delete ((struct prefix_ipv6 *)&rp->p, | |
2786 | &rinfo->nexthop, rinfo->metric); | |
2787 | ||
2788 | RIPNG_TIMER_OFF (rinfo->t_timeout); | |
2789 | RIPNG_TIMER_OFF (rinfo->t_garbage_collect); | |
2790 | ||
2791 | rp->info = NULL; | |
2792 | route_unlock_node (rp); | |
2793 | ||
2794 | ripng_info_free(rinfo); | |
2795 | } | |
2796 | } | |
2797 | ||
2798 | /* Cancel the RIPng timers */ | |
2799 | RIPNG_TIMER_OFF (ripng->t_update); | |
2800 | RIPNG_TIMER_OFF (ripng->t_triggered_update); | |
2801 | RIPNG_TIMER_OFF (ripng->t_triggered_interval); | |
2802 | ||
2803 | /* Cancel the read thread */ | |
2804 | if (ripng->t_read) { | |
2805 | thread_cancel (ripng->t_read); | |
2806 | ripng->t_read = NULL; | |
2807 | } | |
2808 | ||
2809 | /* Close the RIPng socket */ | |
2810 | if (ripng->sock >= 0) { | |
2811 | close(ripng->sock); | |
2812 | ripng->sock = -1; | |
2813 | } | |
2814 | ||
2815 | /* Static RIPng route configuration. */ | |
2816 | for (rp = route_top (ripng->route); rp; rp = route_next (rp)) | |
2817 | if (rp->info) { | |
2818 | rp->info = NULL; | |
2819 | route_unlock_node (rp); | |
2820 | } | |
2821 | ||
2822 | /* RIPng aggregated prefixes */ | |
2823 | for (rp = route_top (ripng->aggregate); rp; rp = route_next (rp)) | |
2824 | if (rp->info) { | |
2825 | rp->info = NULL; | |
2826 | route_unlock_node (rp); | |
2827 | } | |
2828 | ||
2829 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
2830 | if (ripng->route_map[i].name) | |
2831 | free (ripng->route_map[i].name); | |
2832 | ||
2833 | XFREE (MTYPE_ROUTE_TABLE, ripng->table); | |
2834 | XFREE (MTYPE_ROUTE_TABLE, ripng->route); | |
2835 | XFREE (MTYPE_ROUTE_TABLE, ripng->aggregate); | |
2836 | ||
2837 | XFREE (MTYPE_RIPNG, ripng); | |
2838 | ripng = NULL; | |
2839 | } /* if (ripng) */ | |
2840 | ||
2841 | ripng_clean_network(); | |
2842 | ripng_passive_interface_clean (); | |
2843 | ripng_offset_clean (); | |
2844 | ripng_interface_clean (); | |
2845 | ripng_redistribute_clean (); | |
2846 | } | |
2847 | ||
2848 | /* Reset all values to the default settings. */ | |
2849 | void | |
2850 | ripng_reset () | |
2851 | { | |
2852 | /* Call ripd related reset functions. */ | |
2853 | ripng_debug_reset (); | |
2854 | ripng_route_map_reset (); | |
2855 | ||
2856 | /* Call library reset functions. */ | |
2857 | vty_reset (); | |
2858 | access_list_reset (); | |
2859 | prefix_list_reset (); | |
2860 | ||
2861 | distribute_list_reset (); | |
2862 | ||
2863 | ripng_interface_reset (); | |
2864 | ||
2865 | ripng_zclient_reset (); | |
2866 | } | |
718e3744 | 2867 | |
6ac29a51 | 2868 | static void |
718e3744 | 2869 | ripng_if_rmap_update (struct if_rmap *if_rmap) |
2870 | { | |
2871 | struct interface *ifp; | |
2872 | struct ripng_interface *ri; | |
2873 | struct route_map *rmap; | |
2874 | ||
2875 | ifp = if_lookup_by_name (if_rmap->ifname); | |
2876 | if (ifp == NULL) | |
2877 | return; | |
2878 | ||
2879 | ri = ifp->info; | |
2880 | ||
2881 | if (if_rmap->routemap[IF_RMAP_IN]) | |
2882 | { | |
2883 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_IN]); | |
2884 | if (rmap) | |
2885 | ri->routemap[IF_RMAP_IN] = rmap; | |
2886 | else | |
2887 | ri->routemap[IF_RMAP_IN] = NULL; | |
2888 | } | |
2889 | else | |
2890 | ri->routemap[RIPNG_FILTER_IN] = NULL; | |
2891 | ||
2892 | if (if_rmap->routemap[IF_RMAP_OUT]) | |
2893 | { | |
2894 | rmap = route_map_lookup_by_name (if_rmap->routemap[IF_RMAP_OUT]); | |
2895 | if (rmap) | |
2896 | ri->routemap[IF_RMAP_OUT] = rmap; | |
2897 | else | |
2898 | ri->routemap[IF_RMAP_OUT] = NULL; | |
2899 | } | |
2900 | else | |
2901 | ri->routemap[RIPNG_FILTER_OUT] = NULL; | |
2902 | } | |
2903 | ||
2904 | void | |
2905 | ripng_if_rmap_update_interface (struct interface *ifp) | |
2906 | { | |
2907 | struct if_rmap *if_rmap; | |
2908 | ||
2909 | if_rmap = if_rmap_lookup (ifp->name); | |
2910 | if (if_rmap) | |
2911 | ripng_if_rmap_update (if_rmap); | |
2912 | } | |
2913 | ||
6ac29a51 | 2914 | static void |
718e3744 | 2915 | ripng_routemap_update_redistribute (void) |
2916 | { | |
2917 | int i; | |
2918 | ||
2919 | if (ripng) | |
2920 | { | |
2921 | for (i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
2922 | { | |
2923 | if (ripng->route_map[i].name) | |
2924 | ripng->route_map[i].map = | |
2925 | route_map_lookup_by_name (ripng->route_map[i].name); | |
2926 | } | |
2927 | } | |
2928 | } | |
2929 | ||
6ac29a51 | 2930 | static void |
98b718a9 | 2931 | ripng_routemap_update (const char *unused) |
718e3744 | 2932 | { |
2933 | struct interface *ifp; | |
52dc7ee6 | 2934 | struct listnode *node; |
718e3744 | 2935 | |
1eb8ef25 | 2936 | for (ALL_LIST_ELEMENTS_RO (iflist, node, ifp)) |
2937 | ripng_if_rmap_update_interface (ifp); | |
718e3744 | 2938 | |
2939 | ripng_routemap_update_redistribute (); | |
2940 | } | |
2941 | ||
2942 | /* Initialize ripng structure and set commands. */ | |
2943 | void | |
2944 | ripng_init () | |
2945 | { | |
2946 | /* Randomize. */ | |
2947 | srand (time (NULL)); | |
2948 | ||
2949 | /* Install RIPNG_NODE. */ | |
2950 | install_node (&cmd_ripng_node, ripng_config_write); | |
2951 | ||
2952 | /* Install ripng commands. */ | |
2953 | install_element (VIEW_NODE, &show_ipv6_ripng_cmd); | |
a94434b6 | 2954 | install_element (VIEW_NODE, &show_ipv6_ripng_status_cmd); |
718e3744 | 2955 | |
2956 | install_element (ENABLE_NODE, &show_ipv6_ripng_cmd); | |
a94434b6 | 2957 | install_element (ENABLE_NODE, &show_ipv6_ripng_status_cmd); |
718e3744 | 2958 | |
2959 | install_element (CONFIG_NODE, &router_ripng_cmd); | |
a94434b6 | 2960 | install_element (CONFIG_NODE, &no_router_ripng_cmd); |
718e3744 | 2961 | |
2962 | install_default (RIPNG_NODE); | |
2963 | install_element (RIPNG_NODE, &ripng_route_cmd); | |
2964 | install_element (RIPNG_NODE, &no_ripng_route_cmd); | |
2965 | install_element (RIPNG_NODE, &ripng_aggregate_address_cmd); | |
2966 | install_element (RIPNG_NODE, &no_ripng_aggregate_address_cmd); | |
2967 | ||
2968 | install_element (RIPNG_NODE, &ripng_default_metric_cmd); | |
2969 | install_element (RIPNG_NODE, &no_ripng_default_metric_cmd); | |
2970 | install_element (RIPNG_NODE, &no_ripng_default_metric_val_cmd); | |
2971 | ||
2972 | install_element (RIPNG_NODE, &ripng_timers_cmd); | |
2973 | install_element (RIPNG_NODE, &no_ripng_timers_cmd); | |
a94434b6 | 2974 | install_element (RIPNG_NODE, &no_ripng_timers_val_cmd); |
718e3744 | 2975 | #if 0 |
2976 | install_element (RIPNG_NODE, &ripng_update_timer_cmd); | |
2977 | install_element (RIPNG_NODE, &no_ripng_update_timer_cmd); | |
2978 | install_element (RIPNG_NODE, &ripng_timeout_timer_cmd); | |
2979 | install_element (RIPNG_NODE, &no_ripng_timeout_timer_cmd); | |
2980 | install_element (RIPNG_NODE, &ripng_garbage_timer_cmd); | |
2981 | install_element (RIPNG_NODE, &no_ripng_garbage_timer_cmd); | |
2982 | #endif /* 0 */ | |
2983 | ||
a2c62831 | 2984 | install_element (RIPNG_NODE, &ripng_default_information_originate_cmd); |
2985 | install_element (RIPNG_NODE, &no_ripng_default_information_originate_cmd); | |
718e3744 | 2986 | |
2987 | ripng_if_init (); | |
2988 | ripng_debug_init (); | |
2989 | ||
2990 | /* Access list install. */ | |
2991 | access_list_init (); | |
c9e52be3 | 2992 | access_list_add_hook (ripng_distribute_update_all_wrapper); |
2993 | access_list_delete_hook (ripng_distribute_update_all_wrapper); | |
718e3744 | 2994 | |
2995 | /* Prefix list initialize.*/ | |
2996 | prefix_list_init (); | |
2997 | prefix_list_add_hook (ripng_distribute_update_all); | |
2998 | prefix_list_delete_hook (ripng_distribute_update_all); | |
2999 | ||
3000 | /* Distribute list install. */ | |
3001 | distribute_list_init (RIPNG_NODE); | |
3002 | distribute_list_add_hook (ripng_distribute_update); | |
3003 | distribute_list_delete_hook (ripng_distribute_update); | |
3004 | ||
3005 | /* Route-map for interface. */ | |
3006 | ripng_route_map_init (); | |
a94434b6 | 3007 | ripng_offset_init (); |
3008 | ||
718e3744 | 3009 | route_map_add_hook (ripng_routemap_update); |
3010 | route_map_delete_hook (ripng_routemap_update); | |
3011 | ||
0750d21f | 3012 | if_rmap_init (RIPNG_NODE); |
718e3744 | 3013 | if_rmap_hook_add (ripng_if_rmap_update); |
3014 | if_rmap_hook_delete (ripng_if_rmap_update); | |
3015 | } |