]>
Commit | Line | Data |
---|---|---|
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 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 19 | */ |
20 | ||
21 | #include <zebra.h> | |
22 | ||
718e3744 | 23 | #include "prefix.h" |
24 | #include "filter.h" | |
25 | #include "log.h" | |
26 | #include "thread.h" | |
27 | #include "memory.h" | |
28 | #include "if.h" | |
29 | #include "stream.h" | |
fe08ba7e | 30 | #include "agg_table.h" |
718e3744 | 31 | #include "command.h" |
32 | #include "sockopt.h" | |
33 | #include "distribute.h" | |
34 | #include "plist.h" | |
35 | #include "routemap.h" | |
0750d21f | 36 | #include "if_rmap.h" |
27d47aa7 | 37 | #include "privs.h" |
7f9a4fd7 | 38 | #include "lib_errors.h" |
9a12e9e5 | 39 | #include "northbound_cli.h" |
718e3744 | 40 | |
41 | #include "ripngd/ripngd.h" | |
42 | #include "ripngd/ripng_route.h" | |
43 | #include "ripngd/ripng_debug.h" | |
a94434b6 | 44 | #include "ripngd/ripng_nexthop.h" |
718e3744 | 45 | |
d62a17ae | 46 | enum { ripng_all_route, |
47 | ripng_changed_route, | |
718e3744 | 48 | }; |
49 | ||
03a38493 PG |
50 | static void ripng_distribute_update(struct distribute_ctx *ctx, |
51 | struct distribute *dist); | |
52 | ||
718e3744 | 53 | /* Prototypes. */ |
d62a17ae | 54 | void ripng_output_process(struct interface *, struct sockaddr_in6 *, int); |
dde7b15b RW |
55 | static void ripng_instance_enable(struct ripng *ripng, struct vrf *vrf, |
56 | int sock); | |
57 | static void ripng_instance_disable(struct ripng *ripng); | |
d62a17ae | 58 | int ripng_triggered_update(struct thread *); |
4b23867c PG |
59 | static void ripng_if_rmap_update(struct if_rmap_ctx *ctx, |
60 | struct if_rmap *if_rmap); | |
718e3744 | 61 | |
dde7b15b RW |
62 | /* Generate rb-tree of RIPng instances. */ |
63 | static inline int ripng_instance_compare(const struct ripng *a, | |
64 | const struct ripng *b) | |
65 | { | |
66 | return strcmp(a->vrf_name, b->vrf_name); | |
67 | } | |
68 | RB_GENERATE(ripng_instance_head, ripng, entry, ripng_instance_compare) | |
69 | ||
70 | struct ripng_instance_head ripng_instances = RB_INITIALIZER(&ripng_instances); | |
71 | ||
718e3744 | 72 | /* RIPng next hop specification. */ |
d62a17ae | 73 | struct ripng_nexthop { |
74 | enum ripng_nexthop_type { | |
75 | RIPNG_NEXTHOP_UNSPEC, | |
76 | RIPNG_NEXTHOP_ADDRESS | |
77 | } flag; | |
78 | struct in6_addr address; | |
718e3744 | 79 | }; |
718e3744 | 80 | |
49e06d25 | 81 | int ripng_route_rte(struct ripng_info *rinfo) |
a94434b6 | 82 | { |
d62a17ae | 83 | return (rinfo->type == ZEBRA_ROUTE_RIPNG |
84 | && rinfo->sub_type == RIPNG_ROUTE_RTE); | |
a94434b6 | 85 | } |
86 | ||
718e3744 | 87 | /* Allocate new ripng information. */ |
4d762f26 | 88 | struct ripng_info *ripng_info_new(void) |
718e3744 | 89 | { |
d62a17ae | 90 | struct ripng_info *new; |
718e3744 | 91 | |
d62a17ae | 92 | new = XCALLOC(MTYPE_RIPNG_ROUTE, sizeof(struct ripng_info)); |
93 | return new; | |
718e3744 | 94 | } |
95 | ||
96 | /* Free ripng information. */ | |
d62a17ae | 97 | void ripng_info_free(struct ripng_info *rinfo) |
718e3744 | 98 | { |
d62a17ae | 99 | XFREE(MTYPE_RIPNG_ROUTE, rinfo); |
718e3744 | 100 | } |
6b0655a2 | 101 | |
5c84b9a5 RW |
102 | struct ripng *ripng_info_get_instance(const struct ripng_info *rinfo) |
103 | { | |
104 | return agg_get_table_info(agg_get_table(rinfo->rp)); | |
105 | } | |
106 | ||
718e3744 | 107 | /* Create ripng socket. */ |
dde7b15b | 108 | int ripng_make_socket(struct vrf *vrf) |
718e3744 | 109 | { |
d62a17ae | 110 | int ret; |
111 | int sock; | |
112 | struct sockaddr_in6 ripaddr; | |
dde7b15b RW |
113 | const char *vrf_dev = NULL; |
114 | ||
115 | /* Make datagram socket. */ | |
116 | if (vrf->vrf_id != VRF_DEFAULT) | |
117 | vrf_dev = vrf->name; | |
118 | frr_elevate_privs(&ripngd_privs) | |
119 | { | |
120 | sock = vrf_socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP, | |
121 | vrf->vrf_id, vrf_dev); | |
122 | if (sock < 0) { | |
123 | flog_err_sys(EC_LIB_SOCKET, | |
124 | "Cannot create UDP socket: %s", | |
125 | safe_strerror(errno)); | |
126 | return -1; | |
127 | } | |
d62a17ae | 128 | } |
718e3744 | 129 | |
dde7b15b RW |
130 | sockopt_reuseaddr(sock); |
131 | sockopt_reuseport(sock); | |
d62a17ae | 132 | setsockopt_so_recvbuf(sock, 8096); |
133 | ret = setsockopt_ipv6_pktinfo(sock, 1); | |
134 | if (ret < 0) | |
44f12f20 | 135 | goto error; |
6d0732c8 | 136 | #ifdef IPTOS_PREC_INTERNETCONTROL |
d62a17ae | 137 | ret = setsockopt_ipv6_tclass(sock, IPTOS_PREC_INTERNETCONTROL); |
138 | if (ret < 0) | |
44f12f20 | 139 | goto error; |
6d0732c8 | 140 | #endif |
d62a17ae | 141 | ret = setsockopt_ipv6_multicast_hops(sock, 255); |
142 | if (ret < 0) | |
44f12f20 | 143 | goto error; |
d62a17ae | 144 | ret = setsockopt_ipv6_multicast_loop(sock, 0); |
145 | if (ret < 0) | |
44f12f20 | 146 | goto error; |
d62a17ae | 147 | ret = setsockopt_ipv6_hoplimit(sock, 1); |
148 | if (ret < 0) | |
44f12f20 | 149 | goto error; |
d62a17ae | 150 | |
151 | memset(&ripaddr, 0, sizeof(ripaddr)); | |
152 | ripaddr.sin6_family = AF_INET6; | |
718e3744 | 153 | #ifdef SIN6_LEN |
d62a17ae | 154 | ripaddr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 155 | #endif /* SIN6_LEN */ |
d62a17ae | 156 | ripaddr.sin6_port = htons(RIPNG_PORT_DEFAULT); |
718e3744 | 157 | |
01b9e3fd | 158 | frr_elevate_privs(&ripngd_privs) { |
01b9e3fd DL |
159 | ret = bind(sock, (struct sockaddr *)&ripaddr, sizeof(ripaddr)); |
160 | if (ret < 0) { | |
633fc9b1 DL |
161 | zlog_err("Can't bind ripng socket: %s.", |
162 | safe_strerror(errno)); | |
01b9e3fd DL |
163 | goto error; |
164 | } | |
d62a17ae | 165 | } |
d62a17ae | 166 | return sock; |
44f12f20 RW |
167 | |
168 | error: | |
169 | close(sock); | |
170 | return ret; | |
718e3744 | 171 | } |
172 | ||
173 | /* Send RIPng packet. */ | |
d62a17ae | 174 | int ripng_send_packet(caddr_t buf, int bufsize, struct sockaddr_in6 *to, |
175 | struct interface *ifp) | |
176 | { | |
5c84b9a5 RW |
177 | struct ripng_interface *ri = ifp->info; |
178 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 179 | int ret; |
180 | struct msghdr msg; | |
181 | struct iovec iov; | |
182 | struct cmsghdr *cmsgptr; | |
2ae9e38f | 183 | char adata[256] = {}; |
d62a17ae | 184 | struct in6_pktinfo *pkt; |
185 | struct sockaddr_in6 addr; | |
186 | ||
187 | if (IS_RIPNG_DEBUG_SEND) { | |
188 | if (to) | |
189 | zlog_debug("send to %s", inet6_ntoa(to->sin6_addr)); | |
190 | zlog_debug(" send interface %s", ifp->name); | |
191 | zlog_debug(" send packet size %d", bufsize); | |
192 | } | |
193 | ||
194 | memset(&addr, 0, sizeof(struct sockaddr_in6)); | |
195 | addr.sin6_family = AF_INET6; | |
718e3744 | 196 | #ifdef SIN6_LEN |
d62a17ae | 197 | addr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 198 | #endif /* SIN6_LEN */ |
d62a17ae | 199 | addr.sin6_flowinfo = htonl(RIPNG_PRIORITY_DEFAULT); |
200 | ||
201 | /* When destination is specified. */ | |
202 | if (to != NULL) { | |
203 | addr.sin6_addr = to->sin6_addr; | |
204 | addr.sin6_port = to->sin6_port; | |
205 | } else { | |
206 | inet_pton(AF_INET6, RIPNG_GROUP, &addr.sin6_addr); | |
207 | addr.sin6_port = htons(RIPNG_PORT_DEFAULT); | |
208 | } | |
718e3744 | 209 | |
0af35d90 | 210 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 211 | msg.msg_name = (void *)&addr; |
212 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
213 | msg.msg_iov = &iov; | |
214 | msg.msg_iovlen = 1; | |
215 | msg.msg_control = (void *)adata; | |
216 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
217 | ||
218 | iov.iov_base = buf; | |
219 | iov.iov_len = bufsize; | |
220 | ||
221 | cmsgptr = (struct cmsghdr *)adata; | |
222 | cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
223 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
224 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
225 | ||
226 | pkt = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
227 | memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); | |
228 | pkt->ipi6_ifindex = ifp->ifindex; | |
229 | ||
230 | ret = sendmsg(ripng->sock, &msg, 0); | |
231 | ||
232 | if (ret < 0) { | |
233 | if (to) | |
450971aa | 234 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
235 | "RIPng send fail on %s to %s: %s", |
236 | ifp->name, inet6_ntoa(to->sin6_addr), | |
237 | safe_strerror(errno)); | |
d62a17ae | 238 | else |
1c50c1c0 QY |
239 | flog_err_sys(EC_LIB_SOCKET, "RIPng send fail on %s: %s", |
240 | ifp->name, safe_strerror(errno)); | |
d62a17ae | 241 | } |
718e3744 | 242 | |
d62a17ae | 243 | return ret; |
718e3744 | 244 | } |
245 | ||
246 | /* Receive UDP RIPng packet from socket. */ | |
d7c0a89a | 247 | static int ripng_recv_packet(int sock, uint8_t *buf, int bufsize, |
d62a17ae | 248 | struct sockaddr_in6 *from, ifindex_t *ifindex, |
249 | int *hoplimit) | |
250 | { | |
251 | int ret; | |
252 | struct msghdr msg; | |
253 | struct iovec iov; | |
254 | struct cmsghdr *cmsgptr; | |
255 | struct in6_addr dst = {.s6_addr = {0}}; | |
256 | ||
257 | memset(&dst, 0, sizeof(struct in6_addr)); | |
258 | ||
259 | /* Ancillary data. This store cmsghdr and in6_pktinfo. But at this | |
260 | point I can't determine size of cmsghdr */ | |
261 | char adata[1024]; | |
262 | ||
263 | /* Fill in message and iovec. */ | |
0af35d90 | 264 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 265 | msg.msg_name = (void *)from; |
266 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
267 | msg.msg_iov = &iov; | |
268 | msg.msg_iovlen = 1; | |
269 | msg.msg_control = (void *)adata; | |
270 | msg.msg_controllen = sizeof adata; | |
271 | iov.iov_base = buf; | |
272 | iov.iov_len = bufsize; | |
273 | ||
274 | /* If recvmsg fail return minus value. */ | |
275 | ret = recvmsg(sock, &msg, 0); | |
276 | if (ret < 0) | |
277 | return ret; | |
278 | ||
adf0e7c6 | 279 | for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; |
d62a17ae | 280 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) { |
281 | /* I want interface index which this packet comes from. */ | |
282 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
283 | && cmsgptr->cmsg_type == IPV6_PKTINFO) { | |
284 | struct in6_pktinfo *ptr; | |
285 | ||
286 | ptr = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
287 | *ifindex = ptr->ipi6_ifindex; | |
288 | dst = ptr->ipi6_addr; | |
289 | ||
290 | if (*ifindex == 0) | |
291 | zlog_warn( | |
292 | "Interface index returned by IPV6_PKTINFO is zero"); | |
293 | } | |
294 | ||
295 | /* Incoming packet's multicast hop limit. */ | |
296 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
297 | && cmsgptr->cmsg_type == IPV6_HOPLIMIT) { | |
298 | int *phoplimit = (int *)CMSG_DATA(cmsgptr); | |
299 | *hoplimit = *phoplimit; | |
300 | } | |
5eb9d11b | 301 | } |
718e3744 | 302 | |
d62a17ae | 303 | /* Hoplimit check shold be done when destination address is |
304 | multicast address. */ | |
305 | if (!IN6_IS_ADDR_MULTICAST(&dst)) | |
306 | *hoplimit = -1; | |
718e3744 | 307 | |
d62a17ae | 308 | return ret; |
718e3744 | 309 | } |
310 | ||
311 | /* Dump rip packet */ | |
d62a17ae | 312 | void ripng_packet_dump(struct ripng_packet *packet, int size, |
313 | const char *sndrcv) | |
314 | { | |
315 | caddr_t lim; | |
316 | struct rte *rte; | |
317 | const char *command_str; | |
318 | ||
319 | /* Set command string. */ | |
320 | if (packet->command == RIPNG_REQUEST) | |
321 | command_str = "request"; | |
322 | else if (packet->command == RIPNG_RESPONSE) | |
323 | command_str = "response"; | |
324 | else | |
325 | command_str = "unknown"; | |
326 | ||
327 | /* Dump packet header. */ | |
328 | zlog_debug("%s %s version %d packet size %d", sndrcv, command_str, | |
329 | packet->version, size); | |
330 | ||
331 | /* Dump each routing table entry. */ | |
332 | rte = packet->rte; | |
333 | ||
334 | for (lim = (caddr_t)packet + size; (caddr_t)rte < lim; rte++) { | |
335 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
336 | zlog_debug(" nexthop %s/%d", inet6_ntoa(rte->addr), | |
337 | rte->prefixlen); | |
338 | else | |
339 | zlog_debug(" %s/%d metric %d tag %" ROUTE_TAG_PRI, | |
340 | inet6_ntoa(rte->addr), rte->prefixlen, | |
341 | rte->metric, (route_tag_t)ntohs(rte->tag)); | |
342 | } | |
718e3744 | 343 | } |
344 | ||
345 | /* RIPng next hop address RTE (Route Table Entry). */ | |
d62a17ae | 346 | static void ripng_nexthop_rte(struct rte *rte, struct sockaddr_in6 *from, |
347 | struct ripng_nexthop *nexthop) | |
348 | { | |
349 | char buf[INET6_BUFSIZ]; | |
350 | ||
351 | /* Logging before checking RTE. */ | |
352 | if (IS_RIPNG_DEBUG_RECV) | |
353 | zlog_debug("RIPng nexthop RTE address %s tag %" ROUTE_TAG_PRI | |
354 | " prefixlen %d", | |
355 | inet6_ntoa(rte->addr), (route_tag_t)ntohs(rte->tag), | |
356 | rte->prefixlen); | |
357 | ||
358 | /* RFC2080 2.1.1 Next Hop: | |
359 | The route tag and prefix length in the next hop RTE must be | |
360 | set to zero on sending and ignored on receiption. */ | |
361 | if (ntohs(rte->tag) != 0) | |
362 | zlog_warn( | |
363 | "RIPng nexthop RTE with non zero tag value %" ROUTE_TAG_PRI | |
364 | " from %s", | |
365 | (route_tag_t)ntohs(rte->tag), | |
366 | inet6_ntoa(from->sin6_addr)); | |
367 | ||
368 | if (rte->prefixlen != 0) | |
369 | zlog_warn( | |
370 | "RIPng nexthop RTE with non zero prefixlen value %d from %s", | |
371 | rte->prefixlen, inet6_ntoa(from->sin6_addr)); | |
372 | ||
373 | /* Specifying a value of 0:0:0:0:0:0:0:0 in the prefix field of a | |
374 | next hop RTE indicates that the next hop address should be the | |
375 | originator of the RIPng advertisement. An address specified as a | |
376 | next hop must be a link-local address. */ | |
377 | if (IN6_IS_ADDR_UNSPECIFIED(&rte->addr)) { | |
378 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
379 | memset(&nexthop->address, 0, sizeof(struct in6_addr)); | |
380 | return; | |
381 | } | |
718e3744 | 382 | |
d62a17ae | 383 | if (IN6_IS_ADDR_LINKLOCAL(&rte->addr)) { |
384 | nexthop->flag = RIPNG_NEXTHOP_ADDRESS; | |
385 | IPV6_ADDR_COPY(&nexthop->address, &rte->addr); | |
386 | return; | |
387 | } | |
718e3744 | 388 | |
d62a17ae | 389 | /* The purpose of the next hop RTE is to eliminate packets being |
390 | routed through extra hops in the system. It is particularly useful | |
391 | when RIPng is not being run on all of the routers on a network. | |
392 | Note that next hop RTE is "advisory". That is, if the provided | |
393 | information is ignored, a possibly sub-optimal, but absolutely | |
394 | valid, route may be taken. If the received next hop address is not | |
395 | a link-local address, it should be treated as 0:0:0:0:0:0:0:0. */ | |
396 | zlog_warn("RIPng nexthop RTE with non link-local address %s from %s", | |
397 | inet6_ntoa(rte->addr), | |
398 | inet_ntop(AF_INET6, &from->sin6_addr, buf, INET6_BUFSIZ)); | |
718e3744 | 399 | |
d62a17ae | 400 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; |
401 | memset(&nexthop->address, 0, sizeof(struct in6_addr)); | |
718e3744 | 402 | |
d62a17ae | 403 | return; |
718e3744 | 404 | } |
405 | ||
406 | /* If ifp has same link-local address then return 1. */ | |
d62a17ae | 407 | static int ripng_lladdr_check(struct interface *ifp, struct in6_addr *addr) |
718e3744 | 408 | { |
d62a17ae | 409 | struct listnode *node; |
410 | struct connected *connected; | |
411 | struct prefix *p; | |
718e3744 | 412 | |
d62a17ae | 413 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
414 | p = connected->address; | |
718e3744 | 415 | |
d62a17ae | 416 | if (p->family == AF_INET6 |
417 | && IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6) | |
418 | && IN6_ARE_ADDR_EQUAL(&p->u.prefix6, addr)) | |
419 | return 1; | |
420 | } | |
421 | return 0; | |
718e3744 | 422 | } |
423 | ||
424 | /* RIPng route garbage collect timer. */ | |
d62a17ae | 425 | static int ripng_garbage_collect(struct thread *t) |
718e3744 | 426 | { |
d62a17ae | 427 | struct ripng_info *rinfo; |
fe08ba7e | 428 | struct agg_node *rp; |
718e3744 | 429 | |
d62a17ae | 430 | rinfo = THREAD_ARG(t); |
431 | rinfo->t_garbage_collect = NULL; | |
718e3744 | 432 | |
d62a17ae | 433 | /* Off timeout timer. */ |
434 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
718e3744 | 435 | |
d62a17ae | 436 | /* Get route_node pointer. */ |
437 | rp = rinfo->rp; | |
438 | ||
439 | /* Unlock route_node. */ | |
440 | listnode_delete(rp->info, rinfo); | |
441 | if (list_isempty((struct list *)rp->info)) { | |
6a154c88 | 442 | list_delete((struct list **)&rp->info); |
fe08ba7e | 443 | agg_unlock_node(rp); |
d62a17ae | 444 | } |
718e3744 | 445 | |
d62a17ae | 446 | /* Free RIPng routing information. */ |
447 | ripng_info_free(rinfo); | |
718e3744 | 448 | |
d62a17ae | 449 | return 0; |
718e3744 | 450 | } |
451 | ||
5c84b9a5 | 452 | static void ripng_timeout_update(struct ripng *ripng, struct ripng_info *rinfo); |
c880b636 FL |
453 | |
454 | /* Add new route to the ECMP list. | |
fac76f9c FL |
455 | * RETURN: the new entry added in the list, or NULL if it is not the first |
456 | * entry and ECMP is not allowed. | |
c880b636 | 457 | */ |
5c84b9a5 RW |
458 | struct ripng_info *ripng_ecmp_add(struct ripng *ripng, |
459 | struct ripng_info *rinfo_new) | |
718e3744 | 460 | { |
fe08ba7e | 461 | struct agg_node *rp = rinfo_new->rp; |
d62a17ae | 462 | struct ripng_info *rinfo = NULL; |
463 | struct list *list = NULL; | |
718e3744 | 464 | |
d62a17ae | 465 | if (rp->info == NULL) |
466 | rp->info = list_new(); | |
467 | list = (struct list *)rp->info; | |
718e3744 | 468 | |
d62a17ae | 469 | /* If ECMP is not allowed and some entry already exists in the list, |
470 | * do nothing. */ | |
471 | if (listcount(list) && !ripng->ecmp) | |
472 | return NULL; | |
fac76f9c | 473 | |
d62a17ae | 474 | rinfo = ripng_info_new(); |
475 | memcpy(rinfo, rinfo_new, sizeof(struct ripng_info)); | |
476 | listnode_add(list, rinfo); | |
c880b636 | 477 | |
d62a17ae | 478 | if (ripng_route_rte(rinfo)) { |
5c84b9a5 RW |
479 | ripng_timeout_update(ripng, rinfo); |
480 | ripng_zebra_ipv6_add(ripng, rp); | |
d62a17ae | 481 | } |
c880b636 | 482 | |
d62a17ae | 483 | ripng_aggregate_increment(rp, rinfo); |
c880b636 | 484 | |
d62a17ae | 485 | /* Set the route change flag on the first entry. */ |
486 | rinfo = listgetdata(listhead(list)); | |
487 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 488 | |
d62a17ae | 489 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 490 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
c880b636 | 491 | |
d62a17ae | 492 | return rinfo; |
c880b636 FL |
493 | } |
494 | ||
495 | /* Replace the ECMP list with the new route. | |
496 | * RETURN: the new entry added in the list | |
497 | */ | |
5c84b9a5 RW |
498 | struct ripng_info *ripng_ecmp_replace(struct ripng *ripng, |
499 | struct ripng_info *rinfo_new) | |
d62a17ae | 500 | { |
fe08ba7e | 501 | struct agg_node *rp = rinfo_new->rp; |
d62a17ae | 502 | struct list *list = (struct list *)rp->info; |
503 | struct ripng_info *rinfo = NULL, *tmp_rinfo = NULL; | |
504 | struct listnode *node = NULL, *nextnode = NULL; | |
505 | ||
506 | if (list == NULL || listcount(list) == 0) | |
5c84b9a5 | 507 | return ripng_ecmp_add(ripng, rinfo_new); |
d62a17ae | 508 | |
509 | /* Get the first entry */ | |
510 | rinfo = listgetdata(listhead(list)); | |
511 | ||
512 | /* Learnt route replaced by a local one. Delete it from zebra. */ | |
513 | if (ripng_route_rte(rinfo) && !ripng_route_rte(rinfo_new)) | |
514 | if (CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
5c84b9a5 | 515 | ripng_zebra_ipv6_delete(ripng, rp); |
d62a17ae | 516 | |
517 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
518 | ripng_aggregate_decrement_list(rp, list); | |
519 | ||
520 | /* Re-use the first entry, and delete the others. */ | |
521 | for (ALL_LIST_ELEMENTS(list, node, nextnode, tmp_rinfo)) | |
522 | if (tmp_rinfo != rinfo) { | |
523 | RIPNG_TIMER_OFF(tmp_rinfo->t_timeout); | |
524 | RIPNG_TIMER_OFF(tmp_rinfo->t_garbage_collect); | |
525 | list_delete_node(list, node); | |
526 | ripng_info_free(tmp_rinfo); | |
527 | } | |
c880b636 | 528 | |
d62a17ae | 529 | RIPNG_TIMER_OFF(rinfo->t_timeout); |
530 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
531 | memcpy(rinfo, rinfo_new, sizeof(struct ripng_info)); | |
c880b636 | 532 | |
d62a17ae | 533 | if (ripng_route_rte(rinfo)) { |
5c84b9a5 | 534 | ripng_timeout_update(ripng, rinfo); |
d62a17ae | 535 | /* The ADD message implies an update. */ |
5c84b9a5 | 536 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 537 | } |
538 | ||
539 | ripng_aggregate_increment(rp, rinfo); | |
540 | ||
541 | /* Set the route change flag. */ | |
542 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 543 | |
d62a17ae | 544 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 545 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
718e3744 | 546 | |
d62a17ae | 547 | return rinfo; |
c880b636 FL |
548 | } |
549 | ||
550 | /* Delete one route from the ECMP list. | |
551 | * RETURN: | |
552 | * null - the entry is freed, and other entries exist in the list | |
553 | * the entry - the entry is the last one in the list; its metric is set | |
554 | * to INFINITY, and the garbage collector is started for it | |
555 | */ | |
5c84b9a5 RW |
556 | struct ripng_info *ripng_ecmp_delete(struct ripng *ripng, |
557 | struct ripng_info *rinfo) | |
d62a17ae | 558 | { |
fe08ba7e | 559 | struct agg_node *rp = rinfo->rp; |
d62a17ae | 560 | struct list *list = (struct list *)rp->info; |
561 | ||
562 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
563 | ||
564 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
565 | ripng_aggregate_decrement(rp, rinfo); | |
566 | ||
567 | if (listcount(list) > 1) { | |
568 | /* Some other ECMP entries still exist. Just delete this entry. | |
569 | */ | |
570 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
571 | listnode_delete(list, rinfo); | |
572 | if (ripng_route_rte(rinfo) | |
573 | && CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
574 | /* The ADD message implies the update. */ | |
5c84b9a5 | 575 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 576 | ripng_info_free(rinfo); |
577 | rinfo = NULL; | |
578 | } else { | |
579 | assert(rinfo == listgetdata(listhead(list))); | |
580 | ||
581 | /* This is the only entry left in the list. We must keep it in | |
582 | * the list for garbage collection time, with INFINITY metric. | |
583 | */ | |
584 | ||
585 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
586 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, ripng_garbage_collect, | |
587 | ripng->garbage_time); | |
588 | ||
589 | if (ripng_route_rte(rinfo) | |
590 | && CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
5c84b9a5 | 591 | ripng_zebra_ipv6_delete(ripng, rp); |
d62a17ae | 592 | } |
c880b636 | 593 | |
d62a17ae | 594 | /* Set the route change flag on the first entry. */ |
595 | rinfo = listgetdata(listhead(list)); | |
596 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 597 | |
d62a17ae | 598 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 599 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
c880b636 | 600 | |
d62a17ae | 601 | return rinfo; |
c880b636 FL |
602 | } |
603 | ||
604 | /* Timeout RIPng routes. */ | |
d62a17ae | 605 | static int ripng_timeout(struct thread *t) |
c880b636 | 606 | { |
5c84b9a5 RW |
607 | struct ripng_info *rinfo = THREAD_ARG(t); |
608 | struct ripng *ripng = ripng_info_get_instance(rinfo); | |
609 | ||
610 | ripng_ecmp_delete(ripng, rinfo); | |
611 | ||
d62a17ae | 612 | return 0; |
718e3744 | 613 | } |
614 | ||
5c84b9a5 | 615 | static void ripng_timeout_update(struct ripng *ripng, struct ripng_info *rinfo) |
718e3744 | 616 | { |
d62a17ae | 617 | if (rinfo->metric != RIPNG_METRIC_INFINITY) { |
618 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
5c84b9a5 RW |
619 | thread_add_timer(master, ripng_timeout, rinfo, |
620 | ripng->timeout_time, &rinfo->t_timeout); | |
d62a17ae | 621 | } |
718e3744 | 622 | } |
623 | ||
d62a17ae | 624 | static int ripng_filter(int ripng_distribute, struct prefix_ipv6 *p, |
625 | struct ripng_interface *ri) | |
626 | { | |
627 | struct distribute *dist; | |
628 | struct access_list *alist; | |
629 | struct prefix_list *plist; | |
630 | int distribute = ripng_distribute == RIPNG_FILTER_OUT | |
631 | ? DISTRIBUTE_V6_OUT | |
632 | : DISTRIBUTE_V6_IN; | |
633 | const char *inout = ripng_distribute == RIPNG_FILTER_OUT ? "out" : "in"; | |
634 | ||
635 | /* Input distribute-list filtering. */ | |
636 | if (ri->list[ripng_distribute]) { | |
637 | if (access_list_apply(ri->list[ripng_distribute], | |
638 | (struct prefix *)p) | |
639 | == FILTER_DENY) { | |
640 | if (IS_RIPNG_DEBUG_PACKET) | |
641 | zlog_debug("%s/%d filtered by distribute %s", | |
642 | inet6_ntoa(p->prefix), p->prefixlen, | |
643 | inout); | |
644 | return -1; | |
645 | } | |
646 | } | |
647 | if (ri->prefix[ripng_distribute]) { | |
648 | if (prefix_list_apply(ri->prefix[ripng_distribute], | |
649 | (struct prefix *)p) | |
650 | == PREFIX_DENY) { | |
651 | if (IS_RIPNG_DEBUG_PACKET) | |
652 | zlog_debug("%s/%d filtered by prefix-list %s", | |
653 | inet6_ntoa(p->prefix), p->prefixlen, | |
654 | inout); | |
655 | return -1; | |
a94434b6 | 656 | } |
a94434b6 | 657 | } |
a94434b6 | 658 | |
d62a17ae | 659 | /* All interface filter check. */ |
dde7b15b | 660 | dist = distribute_lookup(ri->ripng->distribute_ctx, NULL); |
d62a17ae | 661 | if (dist) { |
662 | if (dist->list[distribute]) { | |
663 | alist = access_list_lookup(AFI_IP6, | |
664 | dist->list[distribute]); | |
665 | ||
666 | if (alist) { | |
667 | if (access_list_apply(alist, (struct prefix *)p) | |
668 | == FILTER_DENY) { | |
669 | if (IS_RIPNG_DEBUG_PACKET) | |
670 | zlog_debug( | |
671 | "%s/%d filtered by distribute %s", | |
672 | inet6_ntoa(p->prefix), | |
673 | p->prefixlen, inout); | |
674 | return -1; | |
675 | } | |
676 | } | |
a94434b6 | 677 | } |
d62a17ae | 678 | if (dist->prefix[distribute]) { |
679 | plist = prefix_list_lookup(AFI_IP6, | |
680 | dist->prefix[distribute]); | |
681 | ||
682 | if (plist) { | |
683 | if (prefix_list_apply(plist, (struct prefix *)p) | |
684 | == PREFIX_DENY) { | |
685 | if (IS_RIPNG_DEBUG_PACKET) | |
686 | zlog_debug( | |
687 | "%s/%d filtered by prefix-list %s", | |
688 | inet6_ntoa(p->prefix), | |
689 | p->prefixlen, inout); | |
690 | return -1; | |
691 | } | |
692 | } | |
a94434b6 | 693 | } |
a94434b6 | 694 | } |
d62a17ae | 695 | return 0; |
a94434b6 | 696 | } |
697 | ||
718e3744 | 698 | /* Process RIPng route according to RFC2080. */ |
d62a17ae | 699 | static void ripng_route_process(struct rte *rte, struct sockaddr_in6 *from, |
700 | struct ripng_nexthop *ripng_nexthop, | |
701 | struct interface *ifp) | |
702 | { | |
703 | int ret; | |
704 | struct prefix_ipv6 p; | |
fe08ba7e | 705 | struct agg_node *rp; |
d62a17ae | 706 | struct ripng_info *rinfo = NULL, newinfo; |
707 | struct ripng_interface *ri; | |
5c84b9a5 | 708 | struct ripng *ripng; |
d62a17ae | 709 | struct in6_addr *nexthop; |
710 | int same = 0; | |
711 | struct list *list = NULL; | |
712 | struct listnode *node = NULL; | |
713 | ||
714 | /* Make prefix structure. */ | |
715 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
716 | p.family = AF_INET6; | |
717 | /* p.prefix = rte->addr; */ | |
718 | IPV6_ADDR_COPY(&p.prefix, &rte->addr); | |
719 | p.prefixlen = rte->prefixlen; | |
720 | ||
721 | /* Make sure mask is applied. */ | |
722 | /* XXX We have to check the prefix is valid or not before call | |
723 | apply_mask_ipv6. */ | |
724 | apply_mask_ipv6(&p); | |
725 | ||
d62a17ae | 726 | ri = ifp->info; |
5c84b9a5 | 727 | ripng = ri->ripng; |
d62a17ae | 728 | |
5c84b9a5 | 729 | /* Apply input filters. */ |
d62a17ae | 730 | ret = ripng_filter(RIPNG_FILTER_IN, &p, ri); |
731 | if (ret < 0) | |
732 | return; | |
733 | ||
734 | memset(&newinfo, 0, sizeof(newinfo)); | |
735 | newinfo.type = ZEBRA_ROUTE_RIPNG; | |
736 | newinfo.sub_type = RIPNG_ROUTE_RTE; | |
737 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
738 | newinfo.nexthop = ripng_nexthop->address; | |
739 | else | |
740 | newinfo.nexthop = from->sin6_addr; | |
741 | newinfo.from = from->sin6_addr; | |
742 | newinfo.ifindex = ifp->ifindex; | |
743 | newinfo.metric = rte->metric; | |
744 | newinfo.metric_out = rte->metric; /* XXX */ | |
745 | newinfo.tag = ntohs(rte->tag); /* XXX */ | |
746 | ||
747 | /* Modify entry. */ | |
748 | if (ri->routemap[RIPNG_FILTER_IN]) { | |
d62a17ae | 749 | ret = route_map_apply(ri->routemap[RIPNG_FILTER_IN], |
750 | (struct prefix *)&p, RMAP_RIPNG, | |
751 | &newinfo); | |
752 | ||
753 | if (ret == RMAP_DENYMATCH) { | |
754 | if (IS_RIPNG_DEBUG_PACKET) | |
755 | zlog_debug( | |
756 | "RIPng %s/%d is filtered by route-map in", | |
757 | inet6_ntoa(p.prefix), p.prefixlen); | |
758 | return; | |
759 | } | |
718e3744 | 760 | |
d62a17ae | 761 | /* Get back the object */ |
762 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) { | |
763 | if (!IPV6_ADDR_SAME(&newinfo.nexthop, | |
764 | &ripng_nexthop->address)) { | |
765 | /* the nexthop get changed by the routemap */ | |
766 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) | |
767 | ripng_nexthop->address = | |
768 | newinfo.nexthop; | |
769 | else | |
770 | ripng_nexthop->address = in6addr_any; | |
771 | } | |
772 | } else { | |
773 | if (!IPV6_ADDR_SAME(&newinfo.nexthop, | |
774 | &from->sin6_addr)) { | |
775 | /* the nexthop get changed by the routemap */ | |
776 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) { | |
777 | ripng_nexthop->flag = | |
778 | RIPNG_NEXTHOP_ADDRESS; | |
779 | ripng_nexthop->address = | |
780 | newinfo.nexthop; | |
781 | } | |
782 | } | |
783 | } | |
784 | rte->tag = htons(newinfo.tag_out); /* XXX */ | |
9d303b37 DL |
785 | rte->metric = |
786 | newinfo.metric_out; /* XXX: the routemap uses the | |
787 | metric_out field */ | |
d62a17ae | 788 | } |
a94434b6 | 789 | |
d62a17ae | 790 | /* Once the entry has been validated, update the metric by |
791 | * adding the cost of the network on wich the message | |
792 | * arrived. If the result is greater than infinity, use infinity | |
793 | * (RFC2453 Sec. 3.9.2) | |
794 | **/ | |
795 | ||
796 | /* Zebra ripngd can handle offset-list in. */ | |
5c84b9a5 | 797 | ret = ripng_offset_list_apply_in(ripng, &p, ifp, &rte->metric); |
d62a17ae | 798 | |
799 | /* If offset-list does not modify the metric use interface's | |
800 | * one. */ | |
801 | if (!ret) | |
802 | rte->metric += ifp->metric ? ifp->metric : 1; | |
803 | ||
804 | if (rte->metric > RIPNG_METRIC_INFINITY) | |
805 | rte->metric = RIPNG_METRIC_INFINITY; | |
806 | ||
807 | /* Set nexthop pointer. */ | |
808 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
809 | nexthop = &ripng_nexthop->address; | |
810 | else | |
811 | nexthop = &from->sin6_addr; | |
812 | ||
813 | /* Lookup RIPng routing table. */ | |
fe08ba7e | 814 | rp = agg_node_get(ripng->table, (struct prefix *)&p); |
d62a17ae | 815 | |
816 | newinfo.rp = rp; | |
817 | newinfo.nexthop = *nexthop; | |
818 | newinfo.metric = rte->metric; | |
819 | newinfo.tag = ntohs(rte->tag); | |
820 | ||
821 | /* Check to see whether there is already RIPng route on the table. */ | |
822 | if ((list = rp->info) != NULL) | |
823 | for (ALL_LIST_ELEMENTS_RO(list, node, rinfo)) { | |
824 | /* Need to compare with redistributed entry or local | |
825 | * entry */ | |
826 | if (!ripng_route_rte(rinfo)) | |
827 | break; | |
828 | ||
829 | if (IPV6_ADDR_SAME(&rinfo->from, &from->sin6_addr) | |
830 | && IPV6_ADDR_SAME(&rinfo->nexthop, nexthop)) | |
831 | break; | |
832 | ||
833 | if (!listnextnode(node)) { | |
834 | /* Not found in the list */ | |
835 | ||
836 | if (rte->metric > rinfo->metric) { | |
837 | /* New route has a greater metric. | |
838 | * Discard it. */ | |
fe08ba7e | 839 | agg_unlock_node(rp); |
d62a17ae | 840 | return; |
841 | } | |
842 | ||
843 | if (rte->metric < rinfo->metric) | |
844 | /* New route has a smaller metric. | |
845 | * Replace the ECMP list | |
846 | * with the new one in below. */ | |
847 | break; | |
848 | ||
849 | /* Metrics are same. Unless ECMP is disabled, | |
850 | * keep "rinfo" null and | |
851 | * the new route is added in the ECMP list in | |
852 | * below. */ | |
853 | if (!ripng->ecmp) | |
854 | break; | |
855 | } | |
856 | } | |
718e3744 | 857 | |
d62a17ae | 858 | if (rinfo) { |
859 | /* Redistributed route check. */ | |
860 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
861 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 862 | agg_unlock_node(rp); |
d62a17ae | 863 | return; |
864 | } | |
a94434b6 | 865 | |
d62a17ae | 866 | /* Local static route. */ |
867 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
868 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) | |
869 | || (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) | |
870 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 871 | agg_unlock_node(rp); |
d62a17ae | 872 | return; |
873 | } | |
874 | } | |
a94434b6 | 875 | |
d62a17ae | 876 | if (!rinfo) { |
877 | /* Now, check to see whether there is already an explicit route | |
878 | for the destination prefix. If there is no such route, add | |
879 | this route to the routing table, unless the metric is | |
880 | infinity (there is no point in adding a route which | |
881 | unusable). */ | |
882 | if (rte->metric != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 883 | ripng_ecmp_add(ripng, &newinfo); |
3e7a9652 | 884 | else |
fe08ba7e | 885 | agg_unlock_node(rp); |
d62a17ae | 886 | } else { |
887 | /* If there is an existing route, compare the next hop address | |
888 | to the address of the router from which the datagram came. | |
889 | If this datagram is from the same router as the existing | |
890 | route, reinitialize the timeout. */ | |
891 | same = (IN6_ARE_ADDR_EQUAL(&rinfo->from, &from->sin6_addr) | |
892 | && (rinfo->ifindex == ifp->ifindex)); | |
893 | ||
894 | /* | |
895 | * RFC 2080 - Section 2.4.2: | |
896 | * "If the new metric is the same as the old one, examine the | |
897 | * timeout | |
898 | * for the existing route. If it is at least halfway to the | |
899 | * expiration | |
900 | * point, switch to the new route. This heuristic is optional, | |
901 | * but | |
902 | * highly recommended". | |
903 | */ | |
904 | if (!ripng->ecmp && !same && rinfo->metric == rte->metric | |
905 | && rinfo->t_timeout | |
906 | && (thread_timer_remain_second(rinfo->t_timeout) | |
907 | < (ripng->timeout_time / 2))) { | |
5c84b9a5 | 908 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 909 | } |
910 | /* Next, compare the metrics. If the datagram is from the same | |
911 | router as the existing route, and the new metric is different | |
912 | than the old one; or, if the new metric is lower than the old | |
913 | one; do the following actions: */ | |
914 | else if ((same && rinfo->metric != rte->metric) | |
915 | || rte->metric < rinfo->metric) { | |
916 | if (listcount(list) == 1) { | |
917 | if (newinfo.metric != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 918 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 919 | else |
5c84b9a5 | 920 | ripng_ecmp_delete(ripng, rinfo); |
d62a17ae | 921 | } else { |
922 | if (newinfo.metric < rinfo->metric) | |
5c84b9a5 | 923 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 924 | else /* newinfo.metric > rinfo->metric */ |
5c84b9a5 | 925 | ripng_ecmp_delete(ripng, rinfo); |
d62a17ae | 926 | } |
927 | } else /* same & no change */ | |
5c84b9a5 | 928 | ripng_timeout_update(ripng, rinfo); |
d62a17ae | 929 | |
930 | /* Unlock tempolary lock of the route. */ | |
fe08ba7e | 931 | agg_unlock_node(rp); |
d62a17ae | 932 | } |
718e3744 | 933 | } |
934 | ||
d62a17ae | 935 | /* Add redistributed route to RIPng table. */ |
5c84b9a5 RW |
936 | void ripng_redistribute_add(struct ripng *ripng, int type, int sub_type, |
937 | struct prefix_ipv6 *p, ifindex_t ifindex, | |
938 | struct in6_addr *nexthop, route_tag_t tag) | |
d62a17ae | 939 | { |
fe08ba7e | 940 | struct agg_node *rp; |
d62a17ae | 941 | struct ripng_info *rinfo = NULL, newinfo; |
942 | struct list *list = NULL; | |
943 | ||
944 | /* Redistribute route */ | |
945 | if (IN6_IS_ADDR_LINKLOCAL(&p->prefix)) | |
946 | return; | |
947 | if (IN6_IS_ADDR_LOOPBACK(&p->prefix)) | |
948 | return; | |
949 | ||
fe08ba7e | 950 | rp = agg_node_get(ripng->table, (struct prefix *)p); |
d62a17ae | 951 | |
952 | memset(&newinfo, 0, sizeof(struct ripng_info)); | |
953 | newinfo.type = type; | |
954 | newinfo.sub_type = sub_type; | |
955 | newinfo.ifindex = ifindex; | |
956 | newinfo.metric = 1; | |
957 | if (tag <= UINT16_MAX) /* RIPng only supports 16 bit tags */ | |
958 | newinfo.tag = tag; | |
959 | newinfo.rp = rp; | |
960 | if (nexthop && IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
961 | newinfo.nexthop = *nexthop; | |
962 | ||
963 | if ((list = rp->info) != NULL && listcount(list) != 0) { | |
964 | rinfo = listgetdata(listhead(list)); | |
965 | ||
966 | if (rinfo->type == ZEBRA_ROUTE_CONNECT | |
967 | && rinfo->sub_type == RIPNG_ROUTE_INTERFACE | |
968 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 969 | agg_unlock_node(rp); |
d62a17ae | 970 | return; |
971 | } | |
972 | ||
973 | /* Manually configured RIPng route check. | |
974 | * They have the precedence on all the other entries. | |
975 | **/ | |
976 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
977 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) | |
978 | || (rinfo->sub_type == RIPNG_ROUTE_DEFAULT))) { | |
979 | if (type != ZEBRA_ROUTE_RIPNG | |
980 | || ((sub_type != RIPNG_ROUTE_STATIC) | |
981 | && (sub_type != RIPNG_ROUTE_DEFAULT))) { | |
fe08ba7e | 982 | agg_unlock_node(rp); |
d62a17ae | 983 | return; |
984 | } | |
985 | } | |
718e3744 | 986 | |
5c84b9a5 | 987 | ripng_ecmp_replace(ripng, &newinfo); |
fe08ba7e | 988 | agg_unlock_node(rp); |
d62a17ae | 989 | } else |
5c84b9a5 | 990 | ripng_ecmp_add(ripng, &newinfo); |
d62a17ae | 991 | |
992 | if (IS_RIPNG_DEBUG_EVENT) { | |
993 | if (!nexthop) | |
994 | zlog_debug( | |
995 | "Redistribute new prefix %s/%d on the interface %s", | |
996 | inet6_ntoa(p->prefix), p->prefixlen, | |
dde7b15b | 997 | ifindex2ifname(ifindex, ripng->vrf->vrf_id)); |
d62a17ae | 998 | else |
999 | zlog_debug( | |
1000 | "Redistribute new prefix %s/%d with nexthop %s on the interface %s", | |
1001 | inet6_ntoa(p->prefix), p->prefixlen, | |
1002 | inet6_ntoa(*nexthop), | |
dde7b15b | 1003 | ifindex2ifname(ifindex, ripng->vrf->vrf_id)); |
d62a17ae | 1004 | } |
718e3744 | 1005 | |
5c84b9a5 | 1006 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1007 | } |
718e3744 | 1008 | |
d62a17ae | 1009 | /* Delete redistributed route to RIPng table. */ |
5c84b9a5 RW |
1010 | void ripng_redistribute_delete(struct ripng *ripng, int type, int sub_type, |
1011 | struct prefix_ipv6 *p, ifindex_t ifindex) | |
d62a17ae | 1012 | { |
fe08ba7e | 1013 | struct agg_node *rp; |
d62a17ae | 1014 | struct ripng_info *rinfo; |
1015 | ||
1016 | if (IN6_IS_ADDR_LINKLOCAL(&p->prefix)) | |
1017 | return; | |
1018 | if (IN6_IS_ADDR_LOOPBACK(&p->prefix)) | |
1019 | return; | |
1020 | ||
fe08ba7e | 1021 | rp = agg_node_lookup(ripng->table, (struct prefix *)p); |
d62a17ae | 1022 | |
1023 | if (rp) { | |
1024 | struct list *list = rp->info; | |
1025 | ||
1026 | if (list != NULL && listcount(list) != 0) { | |
1027 | rinfo = listgetdata(listhead(list)); | |
1028 | if (rinfo != NULL && rinfo->type == type | |
1029 | && rinfo->sub_type == sub_type | |
1030 | && rinfo->ifindex == ifindex) { | |
1031 | /* Perform poisoned reverse. */ | |
1032 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1033 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, | |
1034 | ripng_garbage_collect, | |
1035 | ripng->garbage_time); | |
1036 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
1037 | ||
1038 | /* Aggregate count decrement. */ | |
1039 | ripng_aggregate_decrement(rp, rinfo); | |
1040 | ||
1041 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1042 | ||
1043 | if (IS_RIPNG_DEBUG_EVENT) | |
1044 | zlog_debug( | |
1045 | "Poisone %s/%d on the interface %s with an " | |
1046 | "infinity metric [delete]", | |
1047 | inet6_ntoa(p->prefix), | |
1048 | p->prefixlen, | |
dde7b15b RW |
1049 | ifindex2ifname( |
1050 | ifindex, | |
1051 | ripng->vrf->vrf_id)); | |
d62a17ae | 1052 | |
5c84b9a5 | 1053 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1054 | } |
1055 | } | |
fe08ba7e | 1056 | agg_unlock_node(rp); |
d62a17ae | 1057 | } |
718e3744 | 1058 | } |
1059 | ||
1060 | /* Withdraw redistributed route. */ | |
5c84b9a5 | 1061 | void ripng_redistribute_withdraw(struct ripng *ripng, int type) |
d62a17ae | 1062 | { |
fe08ba7e | 1063 | struct agg_node *rp; |
d62a17ae | 1064 | struct ripng_info *rinfo = NULL; |
1065 | struct list *list = NULL; | |
1066 | ||
fe08ba7e | 1067 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 1068 | if ((list = rp->info) != NULL) { |
1069 | rinfo = listgetdata(listhead(list)); | |
1070 | if ((rinfo->type == type) | |
1071 | && (rinfo->sub_type != RIPNG_ROUTE_INTERFACE)) { | |
1072 | /* Perform poisoned reverse. */ | |
1073 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1074 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, | |
1075 | ripng_garbage_collect, | |
1076 | ripng->garbage_time); | |
1077 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
1078 | ||
1079 | /* Aggregate count decrement. */ | |
1080 | ripng_aggregate_decrement(rp, rinfo); | |
1081 | ||
1082 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1083 | ||
1084 | if (IS_RIPNG_DEBUG_EVENT) { | |
1085 | struct prefix_ipv6 *p = | |
1086 | (struct prefix_ipv6 *)&rp->p; | |
1087 | ||
1088 | zlog_debug( | |
1089 | "Poisone %s/%d on the interface %s [withdraw]", | |
1090 | inet6_ntoa(p->prefix), | |
1091 | p->prefixlen, | |
dde7b15b RW |
1092 | ifindex2ifname( |
1093 | rinfo->ifindex, | |
1094 | ripng->vrf->vrf_id)); | |
d62a17ae | 1095 | } |
1096 | ||
5c84b9a5 | 1097 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1098 | } |
1099 | } | |
1100 | } | |
718e3744 | 1101 | |
d62a17ae | 1102 | /* RIP routing information. */ |
1103 | static void ripng_response_process(struct ripng_packet *packet, int size, | |
1104 | struct sockaddr_in6 *from, | |
1105 | struct interface *ifp, int hoplimit) | |
1106 | { | |
5c84b9a5 RW |
1107 | struct ripng_interface *ri = ifp->info; |
1108 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 1109 | caddr_t lim; |
1110 | struct rte *rte; | |
1111 | struct ripng_nexthop nexthop; | |
1112 | ||
1113 | /* RFC2080 2.4.2 Response Messages: | |
1114 | The Response must be ignored if it is not from the RIPng port. */ | |
1115 | if (ntohs(from->sin6_port) != RIPNG_PORT_DEFAULT) { | |
1116 | zlog_warn("RIPng packet comes from non RIPng port %d from %s", | |
1117 | ntohs(from->sin6_port), inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1118 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1119 | return; |
1120 | } | |
718e3744 | 1121 | |
d62a17ae | 1122 | /* The datagram's IPv6 source address should be checked to see |
1123 | whether the datagram is from a valid neighbor; the source of the | |
1124 | datagram must be a link-local address. */ | |
1125 | if (!IN6_IS_ADDR_LINKLOCAL(&from->sin6_addr)) { | |
1126 | zlog_warn("RIPng packet comes from non link local address %s", | |
1127 | inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1128 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1129 | return; |
1130 | } | |
a94434b6 | 1131 | |
d62a17ae | 1132 | /* It is also worth checking to see whether the response is from one |
1133 | of the router's own addresses. Interfaces on broadcast networks | |
1134 | may receive copies of their own multicasts immediately. If a | |
1135 | router processes its own output as new input, confusion is likely, | |
1136 | and such datagrams must be ignored. */ | |
1137 | if (ripng_lladdr_check(ifp, &from->sin6_addr)) { | |
1138 | zlog_warn( | |
1139 | "RIPng packet comes from my own link local address %s", | |
1140 | inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1141 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1142 | return; |
1143 | } | |
a94434b6 | 1144 | |
d62a17ae | 1145 | /* As an additional check, periodic advertisements must have their |
1146 | hop counts set to 255, and inbound, multicast packets sent from the | |
1147 | RIPng port (i.e. periodic advertisement or triggered update | |
1148 | packets) must be examined to ensure that the hop count is 255. */ | |
1149 | if (hoplimit >= 0 && hoplimit != 255) { | |
1150 | zlog_warn( | |
1151 | "RIPng packet comes with non 255 hop count %d from %s", | |
1152 | hoplimit, inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1153 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1154 | return; |
1155 | } | |
718e3744 | 1156 | |
d62a17ae | 1157 | /* Update RIPng peer. */ |
5c84b9a5 | 1158 | ripng_peer_update(ripng, from, packet->version); |
a94434b6 | 1159 | |
d62a17ae | 1160 | /* Reset nexthop. */ |
1161 | memset(&nexthop, 0, sizeof(struct ripng_nexthop)); | |
1162 | nexthop.flag = RIPNG_NEXTHOP_UNSPEC; | |
718e3744 | 1163 | |
d62a17ae | 1164 | /* Set RTE pointer. */ |
1165 | rte = packet->rte; | |
718e3744 | 1166 | |
d62a17ae | 1167 | for (lim = ((caddr_t)packet) + size; (caddr_t)rte < lim; rte++) { |
1168 | /* First of all, we have to check this RTE is next hop RTE or | |
1169 | not. Next hop RTE is completely different with normal RTE so | |
1170 | we need special treatment. */ | |
1171 | if (rte->metric == RIPNG_METRIC_NEXTHOP) { | |
1172 | ripng_nexthop_rte(rte, from, &nexthop); | |
1173 | continue; | |
1174 | } | |
718e3744 | 1175 | |
d62a17ae | 1176 | /* RTE information validation. */ |
1177 | ||
1178 | /* - is the destination prefix valid (e.g., not a multicast | |
1179 | prefix and not a link-local address) A link-local address | |
1180 | should never be present in an RTE. */ | |
1181 | if (IN6_IS_ADDR_MULTICAST(&rte->addr)) { | |
1182 | zlog_warn( | |
1183 | "Destination prefix is a multicast address %s/%d [%d]", | |
1184 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1185 | rte->metric); | |
5c84b9a5 | 1186 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1187 | continue; |
1188 | } | |
1189 | if (IN6_IS_ADDR_LINKLOCAL(&rte->addr)) { | |
1190 | zlog_warn( | |
1191 | "Destination prefix is a link-local address %s/%d [%d]", | |
1192 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1193 | rte->metric); | |
5c84b9a5 | 1194 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1195 | continue; |
1196 | } | |
1197 | if (IN6_IS_ADDR_LOOPBACK(&rte->addr)) { | |
1198 | zlog_warn( | |
1199 | "Destination prefix is a loopback address %s/%d [%d]", | |
1200 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1201 | rte->metric); | |
5c84b9a5 | 1202 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1203 | continue; |
1204 | } | |
718e3744 | 1205 | |
d62a17ae | 1206 | /* - is the prefix length valid (i.e., between 0 and 128, |
1207 | inclusive) */ | |
1208 | if (rte->prefixlen > 128) { | |
1209 | zlog_warn("Invalid prefix length %s/%d from %s%%%s", | |
1210 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1211 | inet6_ntoa(from->sin6_addr), ifp->name); | |
5c84b9a5 | 1212 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1213 | continue; |
1214 | } | |
718e3744 | 1215 | |
d62a17ae | 1216 | /* - is the metric valid (i.e., between 1 and 16, inclusive) */ |
1217 | if (!(rte->metric >= 1 && rte->metric <= 16)) { | |
1218 | zlog_warn("Invalid metric %d from %s%%%s", rte->metric, | |
1219 | inet6_ntoa(from->sin6_addr), ifp->name); | |
5c84b9a5 | 1220 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1221 | continue; |
1222 | } | |
718e3744 | 1223 | |
d62a17ae | 1224 | /* Vincent: XXX Should we compute the direclty reachable nexthop |
1225 | * for our RIPng network ? | |
1226 | **/ | |
718e3744 | 1227 | |
d62a17ae | 1228 | /* Routing table updates. */ |
1229 | ripng_route_process(rte, from, &nexthop, ifp); | |
1230 | } | |
718e3744 | 1231 | } |
1232 | ||
1233 | /* Response to request message. */ | |
d62a17ae | 1234 | static void ripng_request_process(struct ripng_packet *packet, int size, |
1235 | struct sockaddr_in6 *from, | |
1236 | struct interface *ifp) | |
1237 | { | |
5c84b9a5 | 1238 | struct ripng *ripng; |
d62a17ae | 1239 | caddr_t lim; |
1240 | struct rte *rte; | |
1241 | struct prefix_ipv6 p; | |
fe08ba7e | 1242 | struct agg_node *rp; |
d62a17ae | 1243 | struct ripng_info *rinfo; |
1244 | struct ripng_interface *ri; | |
1245 | ||
1246 | /* Does not reponse to the requests on the loopback interfaces */ | |
1247 | if (if_is_loopback(ifp)) | |
1248 | return; | |
1249 | ||
1250 | /* Check RIPng process is enabled on this interface. */ | |
1251 | ri = ifp->info; | |
1252 | if (!ri->running) | |
1253 | return; | |
5c84b9a5 | 1254 | ripng = ri->ripng; |
d62a17ae | 1255 | |
1256 | /* When passive interface is specified, suppress responses */ | |
1257 | if (ri->passive) | |
1258 | return; | |
1259 | ||
1260 | /* RIPng peer update. */ | |
5c84b9a5 | 1261 | ripng_peer_update(ripng, from, packet->version); |
d62a17ae | 1262 | |
1263 | lim = ((caddr_t)packet) + size; | |
1264 | rte = packet->rte; | |
1265 | ||
1266 | /* The Request is processed entry by entry. If there are no | |
1267 | entries, no response is given. */ | |
1268 | if (lim == (caddr_t)rte) | |
1269 | return; | |
1270 | ||
1271 | /* There is one special case. If there is exactly one entry in the | |
1272 | request, and it has a destination prefix of zero, a prefix length | |
1273 | of zero, and a metric of infinity (i.e., 16), then this is a | |
1274 | request to send the entire routing table. In that case, a call | |
1275 | is made to the output process to send the routing table to the | |
1276 | requesting address/port. */ | |
1277 | if (lim == ((caddr_t)(rte + 1)) && IN6_IS_ADDR_UNSPECIFIED(&rte->addr) | |
1278 | && rte->prefixlen == 0 && rte->metric == RIPNG_METRIC_INFINITY) { | |
1279 | /* All route with split horizon */ | |
1280 | ripng_output_process(ifp, from, ripng_all_route); | |
1281 | } else { | |
1282 | /* Except for this special case, processing is quite simple. | |
1283 | Examine the list of RTEs in the Request one by one. For each | |
1284 | entry, look up the destination in the router's routing | |
1285 | database and, if there is a route, put that route's metric in | |
1286 | the metric field of the RTE. If there is no explicit route | |
1287 | to the specified destination, put infinity in the metric | |
1288 | field. Once all the entries have been filled in, change the | |
1289 | command from Request to Response and send the datagram back | |
1290 | to the requestor. */ | |
1291 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
1292 | p.family = AF_INET6; | |
1293 | ||
1294 | for (; ((caddr_t)rte) < lim; rte++) { | |
1295 | p.prefix = rte->addr; | |
1296 | p.prefixlen = rte->prefixlen; | |
1297 | apply_mask_ipv6(&p); | |
1298 | ||
fe08ba7e | 1299 | rp = agg_node_lookup(ripng->table, (struct prefix *)&p); |
d62a17ae | 1300 | |
1301 | if (rp) { | |
1302 | rinfo = listgetdata( | |
1303 | listhead((struct list *)rp->info)); | |
1304 | rte->metric = rinfo->metric; | |
fe08ba7e | 1305 | agg_unlock_node(rp); |
d62a17ae | 1306 | } else |
1307 | rte->metric = RIPNG_METRIC_INFINITY; | |
1308 | } | |
1309 | packet->command = RIPNG_RESPONSE; | |
1310 | ||
1311 | ripng_send_packet((caddr_t)packet, size, from, ifp); | |
1312 | } | |
718e3744 | 1313 | } |
1314 | ||
1315 | /* First entry point of reading RIPng packet. */ | |
d62a17ae | 1316 | static int ripng_read(struct thread *thread) |
1317 | { | |
5c84b9a5 | 1318 | struct ripng *ripng = THREAD_ARG(thread); |
d62a17ae | 1319 | int len; |
1320 | int sock; | |
1321 | struct sockaddr_in6 from; | |
1322 | struct ripng_packet *packet; | |
1323 | ifindex_t ifindex = 0; | |
1324 | struct interface *ifp; | |
1325 | int hoplimit = -1; | |
1326 | ||
1327 | /* Check ripng is active and alive. */ | |
1328 | assert(ripng != NULL); | |
1329 | assert(ripng->sock >= 0); | |
1330 | ||
1331 | /* Fetch thread data and set read pointer to empty for event | |
1332 | managing. `sock' sould be same as ripng->sock. */ | |
1333 | sock = THREAD_FD(thread); | |
1334 | ripng->t_read = NULL; | |
1335 | ||
1336 | /* Add myself to the next event. */ | |
5c84b9a5 | 1337 | ripng_event(ripng, RIPNG_READ, sock); |
d62a17ae | 1338 | |
1339 | /* Read RIPng packet. */ | |
1340 | len = ripng_recv_packet(sock, STREAM_DATA(ripng->ibuf), | |
1341 | STREAM_SIZE(ripng->ibuf), &from, &ifindex, | |
1342 | &hoplimit); | |
1343 | if (len < 0) { | |
dde7b15b RW |
1344 | zlog_warn("RIPng recvfrom failed (VRF %s): %s.", |
1345 | ripng->vrf_name, safe_strerror(errno)); | |
d62a17ae | 1346 | return len; |
1347 | } | |
718e3744 | 1348 | |
d62a17ae | 1349 | /* Check RTE boundary. RTE size (Packet length - RIPng header size |
1350 | (4)) must be multiple size of one RTE size (20). */ | |
1351 | if (((len - 4) % 20) != 0) { | |
dde7b15b RW |
1352 | zlog_warn("RIPng invalid packet size %d from %s (VRF %s)", len, |
1353 | inet6_ntoa(from.sin6_addr), ripng->vrf_name); | |
5c84b9a5 | 1354 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1355 | return 0; |
1356 | } | |
718e3744 | 1357 | |
d62a17ae | 1358 | packet = (struct ripng_packet *)STREAM_DATA(ripng->ibuf); |
dde7b15b | 1359 | ifp = if_lookup_by_index(ifindex, ripng->vrf->vrf_id); |
718e3744 | 1360 | |
d62a17ae | 1361 | /* RIPng packet received. */ |
1362 | if (IS_RIPNG_DEBUG_EVENT) | |
dde7b15b RW |
1363 | zlog_debug( |
1364 | "RIPng packet received from %s port %d on %s (VRF %s)", | |
1365 | inet6_ntoa(from.sin6_addr), ntohs(from.sin6_port), | |
1366 | ifp ? ifp->name : "unknown", ripng->vrf_name); | |
718e3744 | 1367 | |
d62a17ae | 1368 | /* Logging before packet checking. */ |
1369 | if (IS_RIPNG_DEBUG_RECV) | |
1370 | ripng_packet_dump(packet, len, "RECV"); | |
718e3744 | 1371 | |
d62a17ae | 1372 | /* Packet comes from unknown interface. */ |
1373 | if (ifp == NULL) { | |
dde7b15b RW |
1374 | zlog_warn( |
1375 | "RIPng packet comes from unknown interface %d (VRF %s)", | |
1376 | ifindex, ripng->vrf_name); | |
d62a17ae | 1377 | return 0; |
1378 | } | |
718e3744 | 1379 | |
d62a17ae | 1380 | /* Packet version mismatch checking. */ |
1381 | if (packet->version != ripng->version) { | |
1382 | zlog_warn( | |
dde7b15b RW |
1383 | "RIPng packet version %d doesn't fit to my version %d (VRF %s)", |
1384 | packet->version, ripng->version, ripng->vrf_name); | |
5c84b9a5 | 1385 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1386 | return 0; |
1387 | } | |
718e3744 | 1388 | |
d62a17ae | 1389 | /* Process RIPng packet. */ |
1390 | switch (packet->command) { | |
1391 | case RIPNG_REQUEST: | |
1392 | ripng_request_process(packet, len, &from, ifp); | |
1393 | break; | |
1394 | case RIPNG_RESPONSE: | |
1395 | ripng_response_process(packet, len, &from, ifp, hoplimit); | |
1396 | break; | |
1397 | default: | |
dde7b15b RW |
1398 | zlog_warn("Invalid RIPng command %d (VRF %s)", packet->command, |
1399 | ripng->vrf_name); | |
5c84b9a5 | 1400 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1401 | break; |
1402 | } | |
1403 | return 0; | |
718e3744 | 1404 | } |
1405 | ||
1406 | /* Walk down the RIPng routing table then clear changed flag. */ | |
5c84b9a5 | 1407 | static void ripng_clear_changed_flag(struct ripng *ripng) |
718e3744 | 1408 | { |
fe08ba7e | 1409 | struct agg_node *rp; |
d62a17ae | 1410 | struct ripng_info *rinfo = NULL; |
1411 | struct list *list = NULL; | |
1412 | struct listnode *listnode = NULL; | |
718e3744 | 1413 | |
fe08ba7e | 1414 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 1415 | if ((list = rp->info) != NULL) |
1416 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
1417 | UNSET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
1418 | /* This flag can be set only on the first entry. | |
1419 | */ | |
1420 | break; | |
1421 | } | |
718e3744 | 1422 | } |
1423 | ||
1424 | /* Regular update of RIPng route. Send all routing formation to RIPng | |
1425 | enabled interface. */ | |
d62a17ae | 1426 | static int ripng_update(struct thread *t) |
718e3744 | 1427 | { |
5c84b9a5 | 1428 | struct ripng *ripng = THREAD_ARG(t); |
d62a17ae | 1429 | struct interface *ifp; |
1430 | struct ripng_interface *ri; | |
718e3744 | 1431 | |
d62a17ae | 1432 | /* Clear update timer thread. */ |
1433 | ripng->t_update = NULL; | |
718e3744 | 1434 | |
d62a17ae | 1435 | /* Logging update event. */ |
1436 | if (IS_RIPNG_DEBUG_EVENT) | |
1437 | zlog_debug("RIPng update timer expired!"); | |
718e3744 | 1438 | |
d62a17ae | 1439 | /* Supply routes to each interface. */ |
dde7b15b | 1440 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 1441 | ri = ifp->info; |
718e3744 | 1442 | |
d62a17ae | 1443 | if (if_is_loopback(ifp) || !if_is_up(ifp)) |
1444 | continue; | |
718e3744 | 1445 | |
d62a17ae | 1446 | if (!ri->running) |
1447 | continue; | |
718e3744 | 1448 | |
d62a17ae | 1449 | /* When passive interface is specified, suppress announce to the |
1450 | interface. */ | |
1451 | if (ri->passive) | |
1452 | continue; | |
718e3744 | 1453 | |
1454 | #if RIPNG_ADVANCED | |
d62a17ae | 1455 | if (ri->ri_send == RIPNG_SEND_OFF) { |
1456 | if (IS_RIPNG_DEBUG_EVENT) | |
1457 | zlog_debug( | |
1458 | "[Event] RIPng send to if %d is suppressed by config", | |
1459 | ifp->ifindex); | |
1460 | continue; | |
1461 | } | |
718e3744 | 1462 | #endif /* RIPNG_ADVANCED */ |
1463 | ||
d62a17ae | 1464 | ripng_output_process(ifp, NULL, ripng_all_route); |
1465 | } | |
718e3744 | 1466 | |
d62a17ae | 1467 | /* Triggered updates may be suppressed if a regular update is due by |
1468 | the time the triggered update would be sent. */ | |
1469 | if (ripng->t_triggered_interval) { | |
1470 | thread_cancel(ripng->t_triggered_interval); | |
1471 | ripng->t_triggered_interval = NULL; | |
1472 | } | |
1473 | ripng->trigger = 0; | |
718e3744 | 1474 | |
d62a17ae | 1475 | /* Reset flush event. */ |
5c84b9a5 | 1476 | ripng_event(ripng, RIPNG_UPDATE_EVENT, 0); |
718e3744 | 1477 | |
d62a17ae | 1478 | return 0; |
718e3744 | 1479 | } |
1480 | ||
1481 | /* Triggered update interval timer. */ | |
d62a17ae | 1482 | static int ripng_triggered_interval(struct thread *t) |
718e3744 | 1483 | { |
5c84b9a5 RW |
1484 | struct ripng *ripng = THREAD_ARG(t); |
1485 | ||
d62a17ae | 1486 | ripng->t_triggered_interval = NULL; |
718e3744 | 1487 | |
d62a17ae | 1488 | if (ripng->trigger) { |
1489 | ripng->trigger = 0; | |
1490 | ripng_triggered_update(t); | |
1491 | } | |
1492 | return 0; | |
1493 | } | |
718e3744 | 1494 | |
1495 | /* Execute triggered update. */ | |
d62a17ae | 1496 | int ripng_triggered_update(struct thread *t) |
718e3744 | 1497 | { |
5c84b9a5 | 1498 | struct ripng *ripng = THREAD_ARG(t); |
d62a17ae | 1499 | struct interface *ifp; |
1500 | struct ripng_interface *ri; | |
1501 | int interval; | |
718e3744 | 1502 | |
d62a17ae | 1503 | ripng->t_triggered_update = NULL; |
718e3744 | 1504 | |
d62a17ae | 1505 | /* Cancel interval timer. */ |
1506 | if (ripng->t_triggered_interval) { | |
1507 | thread_cancel(ripng->t_triggered_interval); | |
1508 | ripng->t_triggered_interval = NULL; | |
1509 | } | |
1510 | ripng->trigger = 0; | |
718e3744 | 1511 | |
d62a17ae | 1512 | /* Logging triggered update. */ |
1513 | if (IS_RIPNG_DEBUG_EVENT) | |
1514 | zlog_debug("RIPng triggered update!"); | |
718e3744 | 1515 | |
d62a17ae | 1516 | /* Split Horizon processing is done when generating triggered |
1517 | updates as well as normal updates (see section 2.6). */ | |
dde7b15b | 1518 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 1519 | ri = ifp->info; |
718e3744 | 1520 | |
d62a17ae | 1521 | if (if_is_loopback(ifp) || !if_is_up(ifp)) |
1522 | continue; | |
718e3744 | 1523 | |
d62a17ae | 1524 | if (!ri->running) |
1525 | continue; | |
718e3744 | 1526 | |
d62a17ae | 1527 | /* When passive interface is specified, suppress announce to the |
1528 | interface. */ | |
1529 | if (ri->passive) | |
1530 | continue; | |
718e3744 | 1531 | |
d62a17ae | 1532 | ripng_output_process(ifp, NULL, ripng_changed_route); |
1533 | } | |
718e3744 | 1534 | |
d62a17ae | 1535 | /* Once all of the triggered updates have been generated, the route |
1536 | change flags should be cleared. */ | |
5c84b9a5 | 1537 | ripng_clear_changed_flag(ripng); |
718e3744 | 1538 | |
d62a17ae | 1539 | /* After a triggered update is sent, a timer should be set for a |
1540 | random interval between 1 and 5 seconds. If other changes that | |
1541 | would trigger updates occur before the timer expires, a single | |
1542 | update is triggered when the timer expires. */ | |
1543 | interval = (random() % 5) + 1; | |
718e3744 | 1544 | |
d62a17ae | 1545 | ripng->t_triggered_interval = NULL; |
5c84b9a5 | 1546 | thread_add_timer(master, ripng_triggered_interval, ripng, interval, |
d62a17ae | 1547 | &ripng->t_triggered_interval); |
718e3744 | 1548 | |
d62a17ae | 1549 | return 0; |
718e3744 | 1550 | } |
1551 | ||
1552 | /* Write routing table entry to the stream and return next index of | |
1553 | the routing table entry in the stream. */ | |
d62a17ae | 1554 | int ripng_write_rte(int num, struct stream *s, struct prefix_ipv6 *p, |
d7c0a89a | 1555 | struct in6_addr *nexthop, uint16_t tag, uint8_t metric) |
d62a17ae | 1556 | { |
1557 | /* RIPng packet header. */ | |
1558 | if (num == 0) { | |
1559 | stream_putc(s, RIPNG_RESPONSE); | |
1560 | stream_putc(s, RIPNG_V1); | |
1561 | stream_putw(s, 0); | |
1562 | } | |
718e3744 | 1563 | |
d62a17ae | 1564 | /* Write routing table entry. */ |
b575a12c A |
1565 | if (!nexthop) { |
1566 | assert(p); | |
d7c0a89a | 1567 | stream_write(s, (uint8_t *)&p->prefix, sizeof(struct in6_addr)); |
b575a12c | 1568 | } else |
d7c0a89a | 1569 | stream_write(s, (uint8_t *)nexthop, sizeof(struct in6_addr)); |
d62a17ae | 1570 | stream_putw(s, tag); |
1571 | if (p) | |
1572 | stream_putc(s, p->prefixlen); | |
1573 | else | |
1574 | stream_putc(s, 0); | |
1575 | stream_putc(s, metric); | |
718e3744 | 1576 | |
d62a17ae | 1577 | return ++num; |
718e3744 | 1578 | } |
1579 | ||
1580 | /* Send RESPONSE message to specified destination. */ | |
d62a17ae | 1581 | void ripng_output_process(struct interface *ifp, struct sockaddr_in6 *to, |
1582 | int route_type) | |
1583 | { | |
5c84b9a5 | 1584 | struct ripng *ripng; |
d62a17ae | 1585 | int ret; |
fe08ba7e | 1586 | struct agg_node *rp; |
d62a17ae | 1587 | struct ripng_info *rinfo; |
1588 | struct ripng_interface *ri; | |
1589 | struct ripng_aggregate *aggregate; | |
1590 | struct prefix_ipv6 *p; | |
1591 | struct list *ripng_rte_list; | |
1592 | struct list *list = NULL; | |
1593 | struct listnode *listnode = NULL; | |
1594 | ||
1595 | if (IS_RIPNG_DEBUG_EVENT) { | |
1596 | if (to) | |
1597 | zlog_debug("RIPng update routes to neighbor %s", | |
1598 | inet6_ntoa(to->sin6_addr)); | |
1599 | else | |
1600 | zlog_debug("RIPng update routes on interface %s", | |
1601 | ifp->name); | |
1602 | } | |
a94434b6 | 1603 | |
5c84b9a5 | 1604 | /* Get RIPng interface and instance. */ |
d62a17ae | 1605 | ri = ifp->info; |
5c84b9a5 | 1606 | ripng = ri->ripng; |
d62a17ae | 1607 | |
1608 | ripng_rte_list = ripng_rte_new(); | |
1609 | ||
fe08ba7e | 1610 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { |
d62a17ae | 1611 | if ((list = rp->info) != NULL |
1612 | && (rinfo = listgetdata(listhead(list))) != NULL | |
1613 | && rinfo->suppress == 0) { | |
1614 | /* If no route-map are applied, the RTE will be these | |
1615 | * following | |
0437e105 | 1616 | * information. |
d62a17ae | 1617 | */ |
1618 | p = (struct prefix_ipv6 *)&rp->p; | |
1619 | rinfo->metric_out = rinfo->metric; | |
1620 | rinfo->tag_out = rinfo->tag; | |
1621 | memset(&rinfo->nexthop_out, 0, | |
1622 | sizeof(rinfo->nexthop_out)); | |
1623 | /* In order to avoid some local loops, | |
1624 | * if the RIPng route has a nexthop via this interface, | |
1625 | * keep the nexthop, | |
1626 | * otherwise set it to 0. The nexthop should not be | |
1627 | * propagated | |
1628 | * beyond the local broadcast/multicast area in order | |
1629 | * to avoid an IGP multi-level recursive look-up. | |
1630 | */ | |
1631 | if (rinfo->ifindex == ifp->ifindex) | |
1632 | rinfo->nexthop_out = rinfo->nexthop; | |
1633 | ||
1634 | /* Apply output filters. */ | |
1635 | ret = ripng_filter(RIPNG_FILTER_OUT, p, ri); | |
1636 | if (ret < 0) | |
1637 | continue; | |
1638 | ||
1639 | /* Changed route only output. */ | |
1640 | if (route_type == ripng_changed_route | |
1641 | && (!(rinfo->flags & RIPNG_RTF_CHANGED))) | |
1642 | continue; | |
1643 | ||
1644 | /* Split horizon. */ | |
1645 | if (ri->split_horizon == RIPNG_SPLIT_HORIZON) { | |
1646 | /* We perform split horizon for RIPng routes. */ | |
1647 | int suppress = 0; | |
1648 | struct ripng_info *tmp_rinfo = NULL; | |
1649 | ||
1650 | for (ALL_LIST_ELEMENTS_RO(list, listnode, | |
1651 | tmp_rinfo)) | |
1652 | if (tmp_rinfo->type == ZEBRA_ROUTE_RIPNG | |
1653 | && tmp_rinfo->ifindex | |
1654 | == ifp->ifindex) { | |
1655 | suppress = 1; | |
1656 | break; | |
1657 | } | |
1658 | if (suppress) | |
1659 | continue; | |
1660 | } | |
1661 | ||
1662 | /* Preparation for route-map. */ | |
1663 | rinfo->metric_set = 0; | |
1664 | /* nexthop_out, | |
1665 | * metric_out | |
1666 | * and tag_out are already initialized. | |
1667 | */ | |
1668 | ||
1669 | /* Interface route-map */ | |
1670 | if (ri->routemap[RIPNG_FILTER_OUT]) { | |
d62a17ae | 1671 | ret = route_map_apply( |
1672 | ri->routemap[RIPNG_FILTER_OUT], | |
1673 | (struct prefix *)p, RMAP_RIPNG, rinfo); | |
1674 | ||
1675 | if (ret == RMAP_DENYMATCH) { | |
1676 | if (IS_RIPNG_DEBUG_PACKET) | |
1677 | zlog_debug( | |
1678 | "RIPng %s/%d is filtered by route-map out", | |
1679 | inet6_ntoa(p->prefix), | |
1680 | p->prefixlen); | |
1681 | continue; | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | /* Redistribute route-map. */ | |
f9120f71 RW |
1686 | if (ripng->redist[rinfo->type].route_map.name) { |
1687 | ret = route_map_apply(ripng->redist[rinfo->type] | |
1688 | .route_map.map, | |
1689 | (struct prefix *)p, | |
1690 | RMAP_RIPNG, rinfo); | |
d62a17ae | 1691 | |
1692 | if (ret == RMAP_DENYMATCH) { | |
1693 | if (IS_RIPNG_DEBUG_PACKET) | |
1694 | zlog_debug( | |
1695 | "RIPng %s/%d is filtered by route-map", | |
1696 | inet6_ntoa(p->prefix), | |
1697 | p->prefixlen); | |
1698 | continue; | |
1699 | } | |
1700 | } | |
1701 | ||
1702 | /* When the route-map does not set metric. */ | |
1703 | if (!rinfo->metric_set) { | |
1704 | /* If the redistribute metric is set. */ | |
f9120f71 | 1705 | if (ripng->redist[rinfo->type].metric_config |
d62a17ae | 1706 | && rinfo->metric != RIPNG_METRIC_INFINITY) { |
1707 | rinfo->metric_out = | |
f9120f71 | 1708 | ripng->redist[rinfo->type] |
d62a17ae | 1709 | .metric; |
1710 | } else { | |
1711 | /* If the route is not connected or | |
1712 | localy generated | |
1713 | one, use default-metric value */ | |
1714 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
1715 | && rinfo->type | |
1716 | != ZEBRA_ROUTE_CONNECT | |
1717 | && rinfo->metric | |
1718 | != RIPNG_METRIC_INFINITY) | |
1719 | rinfo->metric_out = | |
1720 | ripng->default_metric; | |
1721 | } | |
1722 | } | |
1723 | ||
1724 | /* Apply offset-list */ | |
1725 | if (rinfo->metric_out != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 1726 | ripng_offset_list_apply_out(ripng, p, ifp, |
d62a17ae | 1727 | &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 | |
1736 | == RIPNG_SPLIT_HORIZON_POISONED_REVERSE) { | |
1737 | struct ripng_info *tmp_rinfo = NULL; | |
1738 | ||
1739 | for (ALL_LIST_ELEMENTS_RO(list, listnode, | |
1740 | tmp_rinfo)) | |
1741 | if ((tmp_rinfo->type | |
1742 | == ZEBRA_ROUTE_RIPNG) | |
1743 | && tmp_rinfo->ifindex | |
1744 | == ifp->ifindex) | |
1745 | rinfo->metric_out = | |
1746 | RIPNG_METRIC_INFINITY; | |
1747 | } | |
1748 | ||
1749 | /* Add RTE to the list */ | |
1750 | ripng_rte_add(ripng_rte_list, p, rinfo, NULL); | |
718e3744 | 1751 | } |
a94434b6 | 1752 | |
d62a17ae | 1753 | /* Process the aggregated RTE entry */ |
1754 | if ((aggregate = rp->aggregate) != NULL && aggregate->count > 0 | |
1755 | && aggregate->suppress == 0) { | |
1756 | /* If no route-map are applied, the RTE will be these | |
1757 | * following | |
0437e105 | 1758 | * information. |
d62a17ae | 1759 | */ |
1760 | p = (struct prefix_ipv6 *)&rp->p; | |
1761 | aggregate->metric_set = 0; | |
1762 | aggregate->metric_out = aggregate->metric; | |
1763 | aggregate->tag_out = aggregate->tag; | |
1764 | memset(&aggregate->nexthop_out, 0, | |
1765 | sizeof(aggregate->nexthop_out)); | |
1766 | ||
1767 | /* Apply output filters.*/ | |
1768 | ret = ripng_filter(RIPNG_FILTER_OUT, p, ri); | |
1769 | if (ret < 0) | |
1770 | continue; | |
1771 | ||
1772 | /* Interface route-map */ | |
1773 | if (ri->routemap[RIPNG_FILTER_OUT]) { | |
d62a17ae | 1774 | struct ripng_info newinfo; |
1775 | ||
1776 | /* let's cast the aggregate structure to | |
1777 | * ripng_info */ | |
1778 | memset(&newinfo, 0, sizeof(struct ripng_info)); | |
1779 | /* the nexthop is :: */ | |
1780 | newinfo.metric = aggregate->metric; | |
1781 | newinfo.metric_out = aggregate->metric_out; | |
1782 | newinfo.tag = aggregate->tag; | |
1783 | newinfo.tag_out = aggregate->tag_out; | |
1784 | ||
1785 | ret = route_map_apply( | |
1786 | ri->routemap[RIPNG_FILTER_OUT], | |
1787 | (struct prefix *)p, RMAP_RIPNG, | |
1788 | &newinfo); | |
1789 | ||
1790 | if (ret == RMAP_DENYMATCH) { | |
1791 | if (IS_RIPNG_DEBUG_PACKET) | |
1792 | zlog_debug( | |
1793 | "RIPng %s/%d is filtered by route-map out", | |
1794 | inet6_ntoa(p->prefix), | |
1795 | p->prefixlen); | |
1796 | continue; | |
1797 | } | |
1798 | ||
1799 | aggregate->metric_out = newinfo.metric_out; | |
1800 | aggregate->tag_out = newinfo.tag_out; | |
1801 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop_out)) | |
1802 | aggregate->nexthop_out = | |
1803 | newinfo.nexthop_out; | |
1804 | } | |
1805 | ||
1806 | /* There is no redistribute routemap for the aggregated | |
1807 | * RTE */ | |
1808 | ||
1809 | /* Changed route only output. */ | |
1810 | /* XXX, vincent, in order to increase time convergence, | |
1811 | * it should be announced if a child has changed. | |
1812 | */ | |
1813 | if (route_type == ripng_changed_route) | |
1814 | continue; | |
1815 | ||
1816 | /* Apply offset-list */ | |
1817 | if (aggregate->metric_out != RIPNG_METRIC_INFINITY) | |
1818 | ripng_offset_list_apply_out( | |
5c84b9a5 | 1819 | ripng, p, ifp, &aggregate->metric_out); |
d62a17ae | 1820 | |
1821 | if (aggregate->metric_out > RIPNG_METRIC_INFINITY) | |
1822 | aggregate->metric_out = RIPNG_METRIC_INFINITY; | |
1823 | ||
1824 | /* Add RTE to the list */ | |
1825 | ripng_rte_add(ripng_rte_list, p, NULL, aggregate); | |
1826 | } | |
718e3744 | 1827 | } |
1828 | ||
d62a17ae | 1829 | /* Flush the list */ |
1830 | ripng_rte_send(ripng_rte_list, ifp, to); | |
1831 | ripng_rte_free(ripng_rte_list); | |
718e3744 | 1832 | } |
1833 | ||
5c84b9a5 RW |
1834 | struct ripng *ripng_lookup_by_vrf_id(vrf_id_t vrf_id) |
1835 | { | |
1836 | struct vrf *vrf; | |
1837 | ||
1838 | vrf = vrf_lookup_by_id(vrf_id); | |
1839 | if (!vrf) | |
1840 | return NULL; | |
1841 | ||
1842 | return vrf->info; | |
1843 | } | |
1844 | ||
dde7b15b RW |
1845 | struct ripng *ripng_lookup_by_vrf_name(const char *vrf_name) |
1846 | { | |
1847 | struct ripng ripng; | |
1848 | ||
1849 | ripng.vrf_name = (char *)vrf_name; | |
1850 | ||
1851 | return RB_FIND(ripng_instance_head, &ripng_instances, &ripng); | |
1852 | } | |
1853 | ||
718e3744 | 1854 | /* Create new RIPng instance and set it to global variable. */ |
dde7b15b | 1855 | struct ripng *ripng_create(const char *vrf_name, struct vrf *vrf, int socket) |
718e3744 | 1856 | { |
5c84b9a5 | 1857 | struct ripng *ripng; |
718e3744 | 1858 | |
d62a17ae | 1859 | /* Allocaste RIPng instance. */ |
1860 | ripng = XCALLOC(MTYPE_RIPNG, sizeof(struct ripng)); | |
dde7b15b | 1861 | ripng->vrf_name = XSTRDUP(MTYPE_RIPNG_VRF_NAME, vrf_name); |
718e3744 | 1862 | |
d62a17ae | 1863 | /* Default version and timer values. */ |
1864 | ripng->version = RIPNG_V1; | |
9a12e9e5 RW |
1865 | ripng->update_time = yang_get_default_uint32( |
1866 | "%s/timers/update-interval", RIPNG_INSTANCE); | |
1867 | ripng->timeout_time = yang_get_default_uint32( | |
1868 | "%s/timers/holddown-interval", RIPNG_INSTANCE); | |
1869 | ripng->garbage_time = yang_get_default_uint32( | |
1870 | "%s/timers/flush-interval", RIPNG_INSTANCE); | |
1871 | ripng->default_metric = | |
1872 | yang_get_default_uint8("%s/default-metric", RIPNG_INSTANCE); | |
1873 | ripng->ecmp = yang_get_default_bool("%s/allow-ecmp", RIPNG_INSTANCE); | |
d62a17ae | 1874 | |
1875 | /* Make buffer. */ | |
1876 | ripng->ibuf = stream_new(RIPNG_MAX_PACKET_SIZE * 5); | |
1877 | ripng->obuf = stream_new(RIPNG_MAX_PACKET_SIZE); | |
1878 | ||
b0ba762f | 1879 | /* Initialize RIPng data structures. */ |
fe08ba7e | 1880 | ripng->table = agg_table_init(); |
5c84b9a5 | 1881 | agg_set_table_info(ripng->table, ripng); |
ecece94c RW |
1882 | ripng->peer_list = list_new(); |
1883 | ripng->peer_list->cmp = (int (*)(void *, void *))ripng_peer_list_cmp; | |
56bf1cb2 | 1884 | ripng->peer_list->del = ripng_peer_list_del; |
b0ba762f | 1885 | ripng->enable_if = vector_init(1); |
29b94d58 | 1886 | ripng->enable_network = agg_table_init(); |
0c32404f | 1887 | ripng->passive_interface = vector_init(1); |
26c6be93 RW |
1888 | ripng->offset_list_master = list_new(); |
1889 | ripng->offset_list_master->cmp = | |
1890 | (int (*)(void *, void *))offset_list_cmp; | |
1891 | ripng->offset_list_master->del = | |
6c4c3561 | 1892 | (void (*)(void *))ripng_offset_list_free; |
dde7b15b | 1893 | ripng->distribute_ctx = distribute_list_ctx_create(vrf); |
03a38493 PG |
1894 | distribute_list_add_hook(ripng->distribute_ctx, |
1895 | ripng_distribute_update); | |
1896 | distribute_list_delete_hook(ripng->distribute_ctx, | |
1897 | ripng_distribute_update); | |
718e3744 | 1898 | |
4b23867c | 1899 | /* if rmap install. */ |
8f88441d | 1900 | ripng->if_rmap_ctx = if_rmap_ctx_create(vrf_name); |
4b23867c PG |
1901 | if_rmap_hook_add(ripng->if_rmap_ctx, ripng_if_rmap_update); |
1902 | if_rmap_hook_delete(ripng->if_rmap_ctx, ripng_if_rmap_update); | |
5c84b9a5 | 1903 | |
dde7b15b RW |
1904 | /* Enable the routing instance if possible. */ |
1905 | if (vrf && vrf_is_enabled(vrf)) | |
1906 | ripng_instance_enable(ripng, vrf, socket); | |
1907 | else { | |
1908 | ripng->vrf = NULL; | |
1909 | ripng->sock = -1; | |
5c84b9a5 RW |
1910 | } |
1911 | ||
dde7b15b RW |
1912 | RB_INSERT(ripng_instance_head, &ripng_instances, ripng); |
1913 | ||
5c84b9a5 | 1914 | return ripng; |
718e3744 | 1915 | } |
1916 | ||
a94434b6 | 1917 | /* Send RIPng request to the interface. */ |
d62a17ae | 1918 | int ripng_request(struct interface *ifp) |
718e3744 | 1919 | { |
d62a17ae | 1920 | struct rte *rte; |
1921 | struct ripng_packet ripng_packet; | |
718e3744 | 1922 | |
d62a17ae | 1923 | /* In default ripd doesn't send RIP_REQUEST to the loopback interface. |
1924 | */ | |
1925 | if (if_is_loopback(ifp)) | |
1926 | return 0; | |
a94434b6 | 1927 | |
d62a17ae | 1928 | /* If interface is down, don't send RIP packet. */ |
1929 | if (!if_is_up(ifp)) | |
1930 | return 0; | |
a94434b6 | 1931 | |
d62a17ae | 1932 | if (IS_RIPNG_DEBUG_EVENT) |
1933 | zlog_debug("RIPng send request to %s", ifp->name); | |
718e3744 | 1934 | |
d62a17ae | 1935 | memset(&ripng_packet, 0, sizeof(ripng_packet)); |
1936 | ripng_packet.command = RIPNG_REQUEST; | |
1937 | ripng_packet.version = RIPNG_V1; | |
1938 | rte = ripng_packet.rte; | |
1939 | rte->metric = RIPNG_METRIC_INFINITY; | |
718e3744 | 1940 | |
d62a17ae | 1941 | return ripng_send_packet((caddr_t)&ripng_packet, sizeof(ripng_packet), |
1942 | NULL, ifp); | |
718e3744 | 1943 | } |
1944 | ||
6b0655a2 | 1945 | |
d62a17ae | 1946 | static int ripng_update_jitter(int time) |
718e3744 | 1947 | { |
d62a17ae | 1948 | return ((random() % (time + 1)) - (time / 2)); |
718e3744 | 1949 | } |
1950 | ||
5c84b9a5 | 1951 | void ripng_event(struct ripng *ripng, enum ripng_event event, int sock) |
718e3744 | 1952 | { |
d62a17ae | 1953 | int jitter = 0; |
718e3744 | 1954 | |
d62a17ae | 1955 | switch (event) { |
1956 | case RIPNG_READ: | |
5c84b9a5 RW |
1957 | thread_add_read(master, ripng_read, ripng, sock, |
1958 | &ripng->t_read); | |
d62a17ae | 1959 | break; |
1960 | case RIPNG_UPDATE_EVENT: | |
1961 | if (ripng->t_update) { | |
1962 | thread_cancel(ripng->t_update); | |
1963 | ripng->t_update = NULL; | |
1964 | } | |
1965 | /* Update timer jitter. */ | |
1966 | jitter = ripng_update_jitter(ripng->update_time); | |
1967 | ||
1968 | ripng->t_update = NULL; | |
5c84b9a5 | 1969 | thread_add_timer(master, ripng_update, ripng, |
d62a17ae | 1970 | sock ? 2 : ripng->update_time + jitter, |
1971 | &ripng->t_update); | |
1972 | break; | |
1973 | case RIPNG_TRIGGERED_UPDATE: | |
1974 | if (ripng->t_triggered_interval) | |
1975 | ripng->trigger = 1; | |
1976 | else | |
5c84b9a5 | 1977 | thread_add_event(master, ripng_triggered_update, ripng, |
d62a17ae | 1978 | 0, &ripng->t_triggered_update); |
1979 | break; | |
1980 | default: | |
1981 | break; | |
1982 | } | |
718e3744 | 1983 | } |
6b0655a2 | 1984 | |
718e3744 | 1985 | |
718e3744 | 1986 | /* Print out routes update time. */ |
d62a17ae | 1987 | static void ripng_vty_out_uptime(struct vty *vty, struct ripng_info *rinfo) |
718e3744 | 1988 | { |
d62a17ae | 1989 | time_t clock; |
1990 | struct tm *tm; | |
718e3744 | 1991 | #define TIME_BUF 25 |
d62a17ae | 1992 | char timebuf[TIME_BUF]; |
1993 | struct thread *thread; | |
1994 | ||
1995 | if ((thread = rinfo->t_timeout) != NULL) { | |
1996 | clock = thread_timer_remain_second(thread); | |
1997 | tm = gmtime(&clock); | |
1998 | strftime(timebuf, TIME_BUF, "%M:%S", tm); | |
1999 | vty_out(vty, "%5s", timebuf); | |
2000 | } else if ((thread = rinfo->t_garbage_collect) != NULL) { | |
2001 | clock = thread_timer_remain_second(thread); | |
2002 | tm = gmtime(&clock); | |
2003 | strftime(timebuf, TIME_BUF, "%M:%S", tm); | |
2004 | vty_out(vty, "%5s", timebuf); | |
2005 | } | |
718e3744 | 2006 | } |
2007 | ||
d62a17ae | 2008 | static char *ripng_route_subtype_print(struct ripng_info *rinfo) |
2009 | { | |
2010 | static char str[3]; | |
2011 | memset(str, 0, 3); | |
2012 | ||
2013 | if (rinfo->suppress) | |
2014 | strcat(str, "S"); | |
2015 | ||
2016 | switch (rinfo->sub_type) { | |
2017 | case RIPNG_ROUTE_RTE: | |
2018 | strcat(str, "n"); | |
2019 | break; | |
2020 | case RIPNG_ROUTE_STATIC: | |
2021 | strcat(str, "s"); | |
2022 | break; | |
2023 | case RIPNG_ROUTE_DEFAULT: | |
2024 | strcat(str, "d"); | |
2025 | break; | |
2026 | case RIPNG_ROUTE_REDISTRIBUTE: | |
2027 | strcat(str, "r"); | |
2028 | break; | |
2029 | case RIPNG_ROUTE_INTERFACE: | |
2030 | strcat(str, "i"); | |
2031 | break; | |
2032 | default: | |
2033 | strcat(str, "?"); | |
2034 | break; | |
2035 | } | |
a94434b6 | 2036 | |
d62a17ae | 2037 | return str; |
a94434b6 | 2038 | } |
2039 | ||
718e3744 | 2040 | DEFUN (show_ipv6_ripng, |
2041 | show_ipv6_ripng_cmd, | |
dde7b15b | 2042 | "show ipv6 ripng [vrf NAME]", |
718e3744 | 2043 | SHOW_STR |
8d0f15fd | 2044 | IPV6_STR |
dde7b15b RW |
2045 | "Show RIPng routes\n" |
2046 | VRF_CMD_HELP_STR) | |
718e3744 | 2047 | { |
5c84b9a5 | 2048 | struct ripng *ripng; |
fe08ba7e | 2049 | struct agg_node *rp; |
d62a17ae | 2050 | struct ripng_info *rinfo; |
2051 | struct ripng_aggregate *aggregate; | |
2052 | struct prefix_ipv6 *p; | |
2053 | struct list *list = NULL; | |
2054 | struct listnode *listnode = NULL; | |
2055 | int len; | |
dde7b15b RW |
2056 | const char *vrf_name; |
2057 | int idx = 0; | |
d62a17ae | 2058 | |
dde7b15b RW |
2059 | if (argv_find(argv, argc, "vrf", &idx)) |
2060 | vrf_name = argv[idx + 1]->arg; | |
2061 | else | |
2062 | vrf_name = VRF_DEFAULT_NAME; | |
2063 | ||
2064 | ripng = ripng_lookup_by_vrf_name(vrf_name); | |
2065 | if (!ripng) { | |
2066 | vty_out(vty, "%% RIPng instance not found\n"); | |
2067 | return CMD_SUCCESS; | |
2068 | } | |
2069 | if (!ripng->enabled) { | |
2070 | vty_out(vty, "%% RIPng instance is disabled\n"); | |
d62a17ae | 2071 | return CMD_SUCCESS; |
dde7b15b | 2072 | } |
d62a17ae | 2073 | |
2074 | /* Header of display. */ | |
2075 | vty_out(vty, | |
2076 | "Codes: R - RIPng, C - connected, S - Static, O - OSPF, B - BGP\n" | |
2077 | "Sub-codes:\n" | |
2078 | " (n) - normal, (s) - static, (d) - default, (r) - redistribute,\n" | |
2079 | " (i) - interface, (a/S) - aggregated/Suppressed\n\n" | |
2080 | " Network Next Hop Via Metric Tag Time\n"); | |
2081 | ||
fe08ba7e | 2082 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { |
d62a17ae | 2083 | if ((aggregate = rp->aggregate) != NULL) { |
2084 | p = (struct prefix_ipv6 *)&rp->p; | |
718e3744 | 2085 | |
2086 | #ifdef DEBUG | |
d62a17ae | 2087 | vty_out(vty, "R(a) %d/%d %s/%d ", aggregate->count, |
2088 | aggregate->suppress, inet6_ntoa(p->prefix), | |
2089 | p->prefixlen); | |
718e3744 | 2090 | #else |
d62a17ae | 2091 | vty_out(vty, "R(a) %s/%d ", inet6_ntoa(p->prefix), |
2092 | p->prefixlen); | |
718e3744 | 2093 | #endif /* DEBUG */ |
d62a17ae | 2094 | vty_out(vty, "\n"); |
2095 | vty_out(vty, "%*s", 18, " "); | |
718e3744 | 2096 | |
d62a17ae | 2097 | vty_out(vty, "%*s", 28, " "); |
2098 | vty_out(vty, "self %2d %3" ROUTE_TAG_PRI "\n", | |
2099 | aggregate->metric, (route_tag_t)aggregate->tag); | |
2100 | } | |
718e3744 | 2101 | |
d62a17ae | 2102 | if ((list = rp->info) != NULL) |
2103 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
2104 | p = (struct prefix_ipv6 *)&rp->p; | |
718e3744 | 2105 | |
2106 | #ifdef DEBUG | |
d62a17ae | 2107 | vty_out(vty, "%c(%s) 0/%d %s/%d ", |
2108 | zebra_route_char(rinfo->type), | |
2109 | ripng_route_subtype_print(rinfo), | |
2110 | rinfo->suppress, inet6_ntoa(p->prefix), | |
2111 | p->prefixlen); | |
718e3744 | 2112 | #else |
d62a17ae | 2113 | vty_out(vty, "%c(%s) %s/%d ", |
2114 | zebra_route_char(rinfo->type), | |
2115 | ripng_route_subtype_print(rinfo), | |
2116 | inet6_ntoa(p->prefix), p->prefixlen); | |
718e3744 | 2117 | #endif /* DEBUG */ |
d62a17ae | 2118 | vty_out(vty, "\n"); |
2119 | vty_out(vty, "%*s", 18, " "); | |
2120 | len = vty_out(vty, "%s", | |
2121 | inet6_ntoa(rinfo->nexthop)); | |
2122 | ||
2123 | len = 28 - len; | |
2124 | if (len > 0) | |
51f7fe84 | 2125 | vty_out(vty, "%*s", len, " "); |
d62a17ae | 2126 | |
2127 | /* from */ | |
2128 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) | |
2129 | && (rinfo->sub_type == RIPNG_ROUTE_RTE)) { | |
2130 | len = vty_out( | |
2131 | vty, "%s", | |
dde7b15b RW |
2132 | ifindex2ifname( |
2133 | rinfo->ifindex, | |
2134 | ripng->vrf->vrf_id)); | |
d62a17ae | 2135 | } else if (rinfo->metric |
2136 | == RIPNG_METRIC_INFINITY) { | |
2137 | len = vty_out(vty, "kill"); | |
2138 | } else | |
2139 | len = vty_out(vty, "self"); | |
2140 | ||
2141 | len = 9 - len; | |
2142 | if (len > 0) | |
2143 | vty_out(vty, "%*s", len, " "); | |
2144 | ||
2145 | vty_out(vty, " %2d %3" ROUTE_TAG_PRI " ", | |
2146 | rinfo->metric, (route_tag_t)rinfo->tag); | |
2147 | ||
2148 | /* time */ | |
2149 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) | |
2150 | && (rinfo->sub_type == RIPNG_ROUTE_RTE)) { | |
2151 | /* RTE from remote RIP routers */ | |
2152 | ripng_vty_out_uptime(vty, rinfo); | |
2153 | } else if (rinfo->metric | |
2154 | == RIPNG_METRIC_INFINITY) { | |
2155 | /* poisonous reversed routes (gc) */ | |
2156 | ripng_vty_out_uptime(vty, rinfo); | |
2157 | } | |
2158 | ||
2159 | vty_out(vty, "\n"); | |
2160 | } | |
718e3744 | 2161 | } |
718e3744 | 2162 | |
d62a17ae | 2163 | return CMD_SUCCESS; |
718e3744 | 2164 | } |
2165 | ||
a94434b6 | 2166 | DEFUN (show_ipv6_ripng_status, |
2167 | show_ipv6_ripng_status_cmd, | |
dde7b15b | 2168 | "show ipv6 ripng [vrf NAME] status", |
a94434b6 | 2169 | SHOW_STR |
8d0f15fd | 2170 | IPV6_STR |
a94434b6 | 2171 | "Show RIPng routes\n" |
dde7b15b | 2172 | VRF_CMD_HELP_STR |
a94434b6 | 2173 | "IPv6 routing protocol process parameters and statistics\n") |
2174 | { | |
5c84b9a5 | 2175 | struct ripng *ripng; |
d62a17ae | 2176 | struct interface *ifp; |
dde7b15b RW |
2177 | const char *vrf_name; |
2178 | int idx = 0; | |
a94434b6 | 2179 | |
dde7b15b RW |
2180 | if (argv_find(argv, argc, "vrf", &idx)) |
2181 | vrf_name = argv[idx + 1]->arg; | |
2182 | else | |
2183 | vrf_name = VRF_DEFAULT_NAME; | |
2184 | ||
2185 | ripng = ripng_lookup_by_vrf_name(vrf_name); | |
2186 | if (!ripng) { | |
2187 | vty_out(vty, "%% RIPng instance not found\n"); | |
2188 | return CMD_SUCCESS; | |
2189 | } | |
2190 | if (!ripng->enabled) { | |
2191 | vty_out(vty, "%% RIPng instance is disabled\n"); | |
d62a17ae | 2192 | return CMD_SUCCESS; |
dde7b15b | 2193 | } |
a94434b6 | 2194 | |
d62a17ae | 2195 | vty_out(vty, "Routing Protocol is \"RIPng\"\n"); |
f8981ec5 | 2196 | vty_out(vty, " Sending updates every %u seconds with +/-50%%,", |
d62a17ae | 2197 | ripng->update_time); |
2198 | vty_out(vty, " next due in %lu seconds\n", | |
2199 | thread_timer_remain_second(ripng->t_update)); | |
f8981ec5 RW |
2200 | vty_out(vty, " Timeout after %u seconds,", ripng->timeout_time); |
2201 | vty_out(vty, " garbage collect after %u seconds\n", | |
d62a17ae | 2202 | ripng->garbage_time); |
a94434b6 | 2203 | |
d62a17ae | 2204 | /* Filtering status show. */ |
03a38493 | 2205 | config_show_distribute(vty, ripng->distribute_ctx); |
a94434b6 | 2206 | |
d62a17ae | 2207 | /* Default metric information. */ |
2208 | vty_out(vty, " Default redistribution metric is %d\n", | |
2209 | ripng->default_metric); | |
a94434b6 | 2210 | |
d62a17ae | 2211 | /* Redistribute information. */ |
2212 | vty_out(vty, " Redistributing:"); | |
5c84b9a5 | 2213 | ripng_redistribute_write(vty, ripng); |
d62a17ae | 2214 | vty_out(vty, "\n"); |
a94434b6 | 2215 | |
d62a17ae | 2216 | vty_out(vty, " Default version control: send version %d,", |
2217 | ripng->version); | |
2218 | vty_out(vty, " receive version %d \n", ripng->version); | |
a94434b6 | 2219 | |
d62a17ae | 2220 | vty_out(vty, " Interface Send Recv\n"); |
a94434b6 | 2221 | |
dde7b15b | 2222 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 2223 | struct ripng_interface *ri; |
2224 | ||
2225 | ri = ifp->info; | |
a94434b6 | 2226 | |
d62a17ae | 2227 | if (ri->enable_network || ri->enable_interface) { |
a94434b6 | 2228 | |
d62a17ae | 2229 | vty_out(vty, " %-17s%-3d %-3d\n", ifp->name, |
2230 | ripng->version, ripng->version); | |
2231 | } | |
a94434b6 | 2232 | } |
a94434b6 | 2233 | |
d62a17ae | 2234 | vty_out(vty, " Routing for Networks:\n"); |
5c84b9a5 | 2235 | ripng_network_write(vty, ripng); |
a94434b6 | 2236 | |
d62a17ae | 2237 | vty_out(vty, " Routing Information Sources:\n"); |
2238 | vty_out(vty, | |
2239 | " Gateway BadPackets BadRoutes Distance Last Update\n"); | |
5c84b9a5 | 2240 | ripng_peer_display(vty, ripng); |
a94434b6 | 2241 | |
d62a17ae | 2242 | return CMD_SUCCESS; |
a94434b6 | 2243 | } |
2244 | ||
718e3744 | 2245 | #if 0 |
2246 | /* RIPng update timer setup. */ | |
2247 | DEFUN (ripng_update_timer, | |
2248 | ripng_update_timer_cmd, | |
2249 | "update-timer SECOND", | |
2250 | "Set RIPng update timer in seconds\n" | |
2251 | "Seconds\n") | |
2252 | { | |
2253 | unsigned long update; | |
2254 | char *endptr = NULL; | |
2255 | ||
2256 | update = strtoul (argv[0], &endptr, 10); | |
2257 | if (update == ULONG_MAX || *endptr != '\0') | |
2258 | { | |
26a429fe | 2259 | vty_out (vty, "update timer value error\n"); |
f1a05de9 | 2260 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2261 | } |
2262 | ||
2263 | ripng->update_time = update; | |
2264 | ||
2265 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2266 | return CMD_SUCCESS; | |
2267 | } | |
2268 | ||
2269 | DEFUN (no_ripng_update_timer, | |
2270 | no_ripng_update_timer_cmd, | |
2271 | "no update-timer SECOND", | |
2272 | NO_STR | |
2273 | "Unset RIPng update timer in seconds\n" | |
2274 | "Seconds\n") | |
2275 | { | |
2276 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2277 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2278 | return CMD_SUCCESS; | |
2279 | } | |
2280 | ||
2281 | /* RIPng timeout timer setup. */ | |
2282 | DEFUN (ripng_timeout_timer, | |
2283 | ripng_timeout_timer_cmd, | |
2284 | "timeout-timer SECOND", | |
2285 | "Set RIPng timeout timer in seconds\n" | |
2286 | "Seconds\n") | |
2287 | { | |
2288 | unsigned long timeout; | |
2289 | char *endptr = NULL; | |
2290 | ||
2291 | timeout = strtoul (argv[0], &endptr, 10); | |
2292 | if (timeout == ULONG_MAX || *endptr != '\0') | |
2293 | { | |
26a429fe | 2294 | vty_out (vty, "timeout timer value error\n"); |
f1a05de9 | 2295 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2296 | } |
2297 | ||
2298 | ripng->timeout_time = timeout; | |
2299 | ||
2300 | return CMD_SUCCESS; | |
2301 | } | |
2302 | ||
2303 | DEFUN (no_ripng_timeout_timer, | |
2304 | no_ripng_timeout_timer_cmd, | |
2305 | "no timeout-timer SECOND", | |
2306 | NO_STR | |
2307 | "Unset RIPng timeout timer in seconds\n" | |
2308 | "Seconds\n") | |
2309 | { | |
2310 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2311 | return CMD_SUCCESS; | |
2312 | } | |
2313 | ||
2314 | /* RIPng garbage timer setup. */ | |
2315 | DEFUN (ripng_garbage_timer, | |
2316 | ripng_garbage_timer_cmd, | |
2317 | "garbage-timer SECOND", | |
2318 | "Set RIPng garbage timer in seconds\n" | |
2319 | "Seconds\n") | |
2320 | { | |
2321 | unsigned long garbage; | |
2322 | char *endptr = NULL; | |
2323 | ||
2324 | garbage = strtoul (argv[0], &endptr, 10); | |
2325 | if (garbage == ULONG_MAX || *endptr != '\0') | |
2326 | { | |
26a429fe | 2327 | vty_out (vty, "garbage timer value error\n"); |
f1a05de9 | 2328 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2329 | } |
2330 | ||
2331 | ripng->garbage_time = garbage; | |
2332 | ||
2333 | return CMD_SUCCESS; | |
2334 | } | |
2335 | ||
2336 | DEFUN (no_ripng_garbage_timer, | |
2337 | no_ripng_garbage_timer_cmd, | |
2338 | "no garbage-timer SECOND", | |
2339 | NO_STR | |
2340 | "Unset RIPng garbage timer in seconds\n" | |
2341 | "Seconds\n") | |
2342 | { | |
2343 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2344 | return CMD_SUCCESS; | |
2345 | } | |
2346 | #endif /* 0 */ | |
2347 | ||
d7d73ffc | 2348 | #if 0 |
dd4f9f99 DW |
2349 | DEFUN (show_ipv6_protocols, |
2350 | show_ipv6_protocols_cmd, | |
718e3744 | 2351 | "show ipv6 protocols", |
2352 | SHOW_STR | |
8d0f15fd | 2353 | IPV6_STR |
d911a12a | 2354 | "Routing protocol information\n") |
718e3744 | 2355 | { |
2356 | if (! ripng) | |
2357 | return CMD_SUCCESS; | |
2358 | ||
26a429fe | 2359 | vty_out (vty, "Routing Protocol is \"ripng\"\n"); |
718e3744 | 2360 | |
55f70b67 DL |
2361 | vty_out (vty, "Sending updates every %ld seconds, next due in %d seconds\n", |
2362 | ripng->update_time, 0); | |
718e3744 | 2363 | |
55f70b67 | 2364 | vty_out (vty, "Timerout after %ld seconds, garbage correct %ld\n", |
718e3744 | 2365 | ripng->timeout_time, |
55f70b67 | 2366 | ripng->garbage_time); |
718e3744 | 2367 | |
2368 | vty_out (vty, "Outgoing update filter list for all interfaces is not set"); | |
2369 | vty_out (vty, "Incoming update filter list for all interfaces is not set"); | |
2370 | ||
2371 | return CMD_SUCCESS; | |
2372 | } | |
d7d73ffc | 2373 | #endif |
718e3744 | 2374 | |
fac76f9c | 2375 | /* Update ECMP routes to zebra when ECMP is disabled. */ |
5c84b9a5 | 2376 | void ripng_ecmp_disable(struct ripng *ripng) |
d62a17ae | 2377 | { |
fe08ba7e | 2378 | struct agg_node *rp; |
d62a17ae | 2379 | struct ripng_info *rinfo, *tmp_rinfo; |
2380 | struct list *list; | |
2381 | struct listnode *node, *nextnode; | |
2382 | ||
2383 | if (!ripng) | |
2384 | return; | |
2385 | ||
fe08ba7e | 2386 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 2387 | if ((list = rp->info) != NULL && listcount(list) > 1) { |
2388 | rinfo = listgetdata(listhead(list)); | |
2389 | if (!ripng_route_rte(rinfo)) | |
2390 | continue; | |
2391 | ||
2392 | /* Drop all other entries, except the first one. */ | |
2393 | for (ALL_LIST_ELEMENTS(list, node, nextnode, tmp_rinfo)) | |
2394 | if (tmp_rinfo != rinfo) { | |
2395 | RIPNG_TIMER_OFF(tmp_rinfo->t_timeout); | |
2396 | RIPNG_TIMER_OFF( | |
2397 | tmp_rinfo->t_garbage_collect); | |
2398 | list_delete_node(list, node); | |
2399 | ripng_info_free(tmp_rinfo); | |
2400 | } | |
2401 | ||
2402 | /* Update zebra. */ | |
5c84b9a5 | 2403 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 2404 | |
2405 | /* Set the route change flag. */ | |
2406 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
2407 | ||
2408 | /* Signal the output process to trigger an update. */ | |
5c84b9a5 | 2409 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 2410 | } |
fac76f9c FL |
2411 | } |
2412 | ||
718e3744 | 2413 | /* RIPng configuration write function. */ |
d62a17ae | 2414 | static int ripng_config_write(struct vty *vty) |
2415 | { | |
dde7b15b | 2416 | struct ripng *ripng; |
d62a17ae | 2417 | int write = 0; |
d62a17ae | 2418 | |
dde7b15b RW |
2419 | RB_FOREACH(ripng, ripng_instance_head, &ripng_instances) { |
2420 | char xpath[XPATH_MAXLEN]; | |
2421 | struct lyd_node *dnode; | |
2422 | ||
2423 | snprintf(xpath, sizeof(xpath), | |
2424 | "/frr-ripngd:ripngd/instance[vrf='%s']", | |
2425 | ripng->vrf_name); | |
2426 | ||
2427 | dnode = yang_dnode_get(running_config->dnode, xpath); | |
2428 | assert(dnode); | |
d62a17ae | 2429 | |
5c84b9a5 | 2430 | nb_cli_show_dnode_cmds(vty, dnode, false); |
718e3744 | 2431 | |
dde7b15b | 2432 | config_write_distribute(vty, ripng->distribute_ctx); |
4b23867c | 2433 | config_write_if_rmap(vty, ripng->if_rmap_ctx); |
718e3744 | 2434 | |
9a12e9e5 | 2435 | write = 1; |
d62a17ae | 2436 | } |
9a12e9e5 | 2437 | |
d62a17ae | 2438 | return write; |
718e3744 | 2439 | } |
2440 | ||
2441 | /* RIPng node structure. */ | |
d62a17ae | 2442 | static struct cmd_node cmd_ripng_node = { |
9d303b37 | 2443 | RIPNG_NODE, "%s(config-router)# ", 1, |
718e3744 | 2444 | }; |
2445 | ||
03a38493 PG |
2446 | static void ripng_distribute_update(struct distribute_ctx *ctx, |
2447 | struct distribute *dist) | |
d62a17ae | 2448 | { |
2449 | struct interface *ifp; | |
2450 | struct ripng_interface *ri; | |
2451 | struct access_list *alist; | |
2452 | struct prefix_list *plist; | |
2453 | ||
dde7b15b | 2454 | if (!ctx->vrf || !dist->ifname) |
d62a17ae | 2455 | return; |
2456 | ||
dde7b15b | 2457 | ifp = if_lookup_by_name(dist->ifname, ctx->vrf->vrf_id); |
d62a17ae | 2458 | if (ifp == NULL) |
2459 | return; | |
2460 | ||
2461 | ri = ifp->info; | |
2462 | ||
2463 | if (dist->list[DISTRIBUTE_V6_IN]) { | |
2464 | alist = access_list_lookup(AFI_IP6, | |
2465 | dist->list[DISTRIBUTE_V6_IN]); | |
2466 | if (alist) | |
2467 | ri->list[RIPNG_FILTER_IN] = alist; | |
2468 | else | |
2469 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2470 | } else | |
2471 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2472 | ||
2473 | if (dist->list[DISTRIBUTE_V6_OUT]) { | |
2474 | alist = access_list_lookup(AFI_IP6, | |
2475 | dist->list[DISTRIBUTE_V6_OUT]); | |
2476 | if (alist) | |
2477 | ri->list[RIPNG_FILTER_OUT] = alist; | |
2478 | else | |
2479 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2480 | } else | |
2481 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2482 | ||
2483 | if (dist->prefix[DISTRIBUTE_V6_IN]) { | |
2484 | plist = prefix_list_lookup(AFI_IP6, | |
2485 | dist->prefix[DISTRIBUTE_V6_IN]); | |
2486 | if (plist) | |
2487 | ri->prefix[RIPNG_FILTER_IN] = plist; | |
2488 | else | |
2489 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2490 | } else | |
2491 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2492 | ||
2493 | if (dist->prefix[DISTRIBUTE_V6_OUT]) { | |
2494 | plist = prefix_list_lookup(AFI_IP6, | |
2495 | dist->prefix[DISTRIBUTE_V6_OUT]); | |
2496 | if (plist) | |
2497 | ri->prefix[RIPNG_FILTER_OUT] = plist; | |
2498 | else | |
2499 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2500 | } else | |
2501 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2502 | } | |
2503 | ||
2504 | void ripng_distribute_update_interface(struct interface *ifp) | |
2505 | { | |
dde7b15b RW |
2506 | struct ripng_interface *ri = ifp->info; |
2507 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 2508 | struct distribute *dist; |
2509 | ||
03a38493 PG |
2510 | if (!ripng) |
2511 | return; | |
2512 | dist = distribute_lookup(ripng->distribute_ctx, ifp->name); | |
d62a17ae | 2513 | if (dist) |
03a38493 | 2514 | ripng_distribute_update(ripng->distribute_ctx, dist); |
718e3744 | 2515 | } |
2516 | ||
2517 | /* Update all interface's distribute list. */ | |
d62a17ae | 2518 | static void ripng_distribute_update_all(struct prefix_list *notused) |
718e3744 | 2519 | { |
f4e14fdb | 2520 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 2521 | struct interface *ifp; |
718e3744 | 2522 | |
451fda4f | 2523 | FOR_ALL_INTERFACES (vrf, ifp) |
d62a17ae | 2524 | ripng_distribute_update_interface(ifp); |
718e3744 | 2525 | } |
c9e52be3 | 2526 | |
d62a17ae | 2527 | static void ripng_distribute_update_all_wrapper(struct access_list *notused) |
c9e52be3 | 2528 | { |
d62a17ae | 2529 | ripng_distribute_update_all(NULL); |
c9e52be3 | 2530 | } |
6b0655a2 | 2531 | |
a94434b6 | 2532 | /* delete all the added ripng routes. */ |
5c84b9a5 | 2533 | void ripng_clean(struct ripng *ripng) |
d62a17ae | 2534 | { |
dde7b15b RW |
2535 | if (ripng->enabled) |
2536 | ripng_instance_disable(ripng); | |
a9caf6e9 RW |
2537 | |
2538 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
f9120f71 RW |
2539 | if (ripng->redist[i].route_map.name) |
2540 | free(ripng->redist[i].route_map.name); | |
a94434b6 | 2541 | |
a9caf6e9 | 2542 | agg_table_finish(ripng->table); |
56bf1cb2 | 2543 | list_delete(&ripng->peer_list); |
a9caf6e9 | 2544 | distribute_list_delete(&ripng->distribute_ctx); |
8f88441d | 2545 | if_rmap_ctx_delete(ripng->if_rmap_ctx); |
0581e54d | 2546 | |
a9caf6e9 RW |
2547 | stream_free(ripng->ibuf); |
2548 | stream_free(ripng->obuf); | |
a94434b6 | 2549 | |
5c84b9a5 RW |
2550 | ripng_clean_network(ripng); |
2551 | ripng_passive_interface_clean(ripng); | |
b0ba762f | 2552 | vector_free(ripng->enable_if); |
29b94d58 | 2553 | agg_table_finish(ripng->enable_network); |
0c32404f | 2554 | vector_free(ripng->passive_interface); |
26c6be93 | 2555 | list_delete(&ripng->offset_list_master); |
5c84b9a5 | 2556 | ripng_interface_clean(ripng); |
5c84b9a5 | 2557 | |
dde7b15b RW |
2558 | RB_REMOVE(ripng_instance_head, &ripng_instances, ripng); |
2559 | XFREE(MTYPE_RIPNG_VRF_NAME, ripng->vrf_name); | |
a9caf6e9 | 2560 | XFREE(MTYPE_RIPNG, ripng); |
a94434b6 | 2561 | } |
2562 | ||
4b23867c PG |
2563 | static void ripng_if_rmap_update(struct if_rmap_ctx *ctx, |
2564 | struct if_rmap *if_rmap) | |
718e3744 | 2565 | { |
aec0d756 | 2566 | struct interface *ifp = NULL; |
d62a17ae | 2567 | struct ripng_interface *ri; |
2568 | struct route_map *rmap; | |
aec0d756 | 2569 | struct vrf *vrf = NULL; |
718e3744 | 2570 | |
aec0d756 PG |
2571 | if (ctx->name) |
2572 | vrf = vrf_lookup_by_name(ctx->name); | |
2573 | if (vrf) | |
2574 | ifp = if_lookup_by_name(if_rmap->ifname, vrf->vrf_id); | |
d62a17ae | 2575 | if (ifp == NULL) |
2576 | return; | |
718e3744 | 2577 | |
d62a17ae | 2578 | ri = ifp->info; |
718e3744 | 2579 | |
d62a17ae | 2580 | if (if_rmap->routemap[IF_RMAP_IN]) { |
2581 | rmap = route_map_lookup_by_name(if_rmap->routemap[IF_RMAP_IN]); | |
2582 | if (rmap) | |
2583 | ri->routemap[IF_RMAP_IN] = rmap; | |
2584 | else | |
2585 | ri->routemap[IF_RMAP_IN] = NULL; | |
2586 | } else | |
2587 | ri->routemap[RIPNG_FILTER_IN] = NULL; | |
718e3744 | 2588 | |
d62a17ae | 2589 | if (if_rmap->routemap[IF_RMAP_OUT]) { |
2590 | rmap = route_map_lookup_by_name(if_rmap->routemap[IF_RMAP_OUT]); | |
2591 | if (rmap) | |
2592 | ri->routemap[IF_RMAP_OUT] = rmap; | |
2593 | else | |
2594 | ri->routemap[IF_RMAP_OUT] = NULL; | |
2595 | } else | |
2596 | ri->routemap[RIPNG_FILTER_OUT] = NULL; | |
718e3744 | 2597 | } |
2598 | ||
d62a17ae | 2599 | void ripng_if_rmap_update_interface(struct interface *ifp) |
718e3744 | 2600 | { |
8f88441d RW |
2601 | struct ripng_interface *ri = ifp->info; |
2602 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 2603 | struct if_rmap *if_rmap; |
4b23867c | 2604 | struct if_rmap_ctx *ctx; |
718e3744 | 2605 | |
4b23867c PG |
2606 | if (!ripng) |
2607 | return; | |
2608 | ctx = ripng->if_rmap_ctx; | |
2609 | if (!ctx) | |
2610 | return; | |
2611 | if_rmap = if_rmap_lookup(ctx, ifp->name); | |
d62a17ae | 2612 | if (if_rmap) |
4b23867c | 2613 | ripng_if_rmap_update(ctx, if_rmap); |
718e3744 | 2614 | } |
2615 | ||
5c84b9a5 | 2616 | static void ripng_routemap_update_redistribute(struct ripng *ripng) |
718e3744 | 2617 | { |
5c84b9a5 | 2618 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) { |
8f88441d | 2619 | if (ripng->redist[i].route_map.name) { |
f9120f71 RW |
2620 | ripng->redist[i].route_map.map = |
2621 | route_map_lookup_by_name( | |
2622 | ripng->redist[i].route_map.name); | |
8f88441d RW |
2623 | route_map_counter_increment( |
2624 | ripng->redist[i].route_map.map); | |
d62a17ae | 2625 | } |
718e3744 | 2626 | } |
718e3744 | 2627 | } |
2628 | ||
d62a17ae | 2629 | static void ripng_routemap_update(const char *unused) |
718e3744 | 2630 | { |
f4e14fdb | 2631 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
5c84b9a5 | 2632 | struct ripng *ripng; |
d62a17ae | 2633 | struct interface *ifp; |
718e3744 | 2634 | |
451fda4f | 2635 | FOR_ALL_INTERFACES (vrf, ifp) |
d62a17ae | 2636 | ripng_if_rmap_update_interface(ifp); |
718e3744 | 2637 | |
5c84b9a5 RW |
2638 | ripng = vrf->info; |
2639 | if (ripng) | |
2640 | ripng_routemap_update_redistribute(ripng); | |
718e3744 | 2641 | } |
2642 | ||
dde7b15b RW |
2643 | /* Link RIPng instance to VRF. */ |
2644 | static void ripng_vrf_link(struct ripng *ripng, struct vrf *vrf) | |
2645 | { | |
2646 | struct interface *ifp; | |
2647 | ||
2648 | ripng->vrf = vrf; | |
2649 | ripng->distribute_ctx->vrf = vrf; | |
2650 | vrf->info = ripng; | |
2651 | ||
2652 | FOR_ALL_INTERFACES (vrf, ifp) | |
2653 | ripng_interface_sync(ifp); | |
2654 | } | |
2655 | ||
2656 | /* Unlink RIPng instance from VRF. */ | |
2657 | static void ripng_vrf_unlink(struct ripng *ripng, struct vrf *vrf) | |
2658 | { | |
2659 | struct interface *ifp; | |
2660 | ||
2661 | ripng->vrf = NULL; | |
2662 | ripng->distribute_ctx->vrf = NULL; | |
2663 | vrf->info = NULL; | |
2664 | ||
2665 | FOR_ALL_INTERFACES (vrf, ifp) | |
2666 | ripng_interface_sync(ifp); | |
2667 | } | |
2668 | ||
2669 | static void ripng_instance_enable(struct ripng *ripng, struct vrf *vrf, | |
2670 | int sock) | |
2671 | { | |
2672 | ripng->sock = sock; | |
2673 | ||
2674 | ripng_vrf_link(ripng, vrf); | |
2675 | ripng->enabled = true; | |
2676 | ||
f9120f71 RW |
2677 | /* Resend all redistribute requests. */ |
2678 | ripng_redistribute_enable(ripng); | |
2679 | ||
dde7b15b RW |
2680 | /* Create read and timer thread. */ |
2681 | ripng_event(ripng, RIPNG_READ, ripng->sock); | |
2682 | ripng_event(ripng, RIPNG_UPDATE_EVENT, 1); | |
2683 | ||
2684 | ripng_zebra_vrf_register(vrf); | |
2685 | } | |
2686 | ||
2687 | static void ripng_instance_disable(struct ripng *ripng) | |
2688 | { | |
2689 | struct vrf *vrf = ripng->vrf; | |
2690 | struct agg_node *rp; | |
2691 | ||
2692 | /* Clear RIPng routes */ | |
2693 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { | |
2694 | struct ripng_aggregate *aggregate; | |
2695 | struct list *list; | |
2696 | ||
2697 | if ((list = rp->info) != NULL) { | |
2698 | struct ripng_info *rinfo; | |
2699 | struct listnode *listnode; | |
2700 | ||
2701 | rinfo = listgetdata(listhead(list)); | |
2702 | if (ripng_route_rte(rinfo)) | |
2703 | ripng_zebra_ipv6_delete(ripng, rp); | |
2704 | ||
2705 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
2706 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
2707 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
2708 | ripng_info_free(rinfo); | |
2709 | } | |
2710 | list_delete(&list); | |
2711 | rp->info = NULL; | |
2712 | agg_unlock_node(rp); | |
2713 | } | |
2714 | ||
2715 | if ((aggregate = rp->aggregate) != NULL) { | |
2716 | ripng_aggregate_free(aggregate); | |
2717 | rp->aggregate = NULL; | |
2718 | agg_unlock_node(rp); | |
2719 | } | |
2720 | } | |
2721 | ||
f9120f71 RW |
2722 | /* Flush all redistribute requests. */ |
2723 | ripng_redistribute_disable(ripng); | |
2724 | ||
dde7b15b RW |
2725 | /* Cancel the RIPng timers */ |
2726 | RIPNG_TIMER_OFF(ripng->t_update); | |
2727 | RIPNG_TIMER_OFF(ripng->t_triggered_update); | |
2728 | RIPNG_TIMER_OFF(ripng->t_triggered_interval); | |
2729 | ||
2730 | /* Cancel the read thread */ | |
2731 | if (ripng->t_read) { | |
2732 | thread_cancel(ripng->t_read); | |
2733 | ripng->t_read = NULL; | |
2734 | } | |
2735 | ||
2736 | /* Close the RIPng socket */ | |
2737 | if (ripng->sock >= 0) { | |
2738 | close(ripng->sock); | |
2739 | ripng->sock = -1; | |
2740 | } | |
2741 | ||
2742 | /* Clear existing peers. */ | |
2743 | list_delete_all_node(ripng->peer_list); | |
2744 | ||
2745 | ripng_zebra_vrf_deregister(vrf); | |
2746 | ||
2747 | ripng_vrf_unlink(ripng, vrf); | |
2748 | ripng->enabled = false; | |
2749 | } | |
2750 | ||
2751 | static int ripng_vrf_new(struct vrf *vrf) | |
2752 | { | |
2753 | if (IS_RIPNG_DEBUG_EVENT) | |
2754 | zlog_debug("%s: VRF created: %s(%u)", __func__, vrf->name, | |
2755 | vrf->vrf_id); | |
2756 | ||
2757 | return 0; | |
2758 | } | |
2759 | ||
2760 | static int ripng_vrf_delete(struct vrf *vrf) | |
2761 | { | |
2762 | if (IS_RIPNG_DEBUG_EVENT) | |
2763 | zlog_debug("%s: VRF deleted: %s(%u)", __func__, vrf->name, | |
2764 | vrf->vrf_id); | |
2765 | ||
2766 | return 0; | |
2767 | } | |
2768 | ||
2769 | static int ripng_vrf_enable(struct vrf *vrf) | |
2770 | { | |
2771 | struct ripng *ripng; | |
2772 | int socket; | |
2773 | ||
2774 | ripng = ripng_lookup_by_vrf_name(vrf->name); | |
2775 | if (!ripng || ripng->enabled) | |
2776 | return 0; | |
2777 | ||
2778 | if (IS_RIPNG_DEBUG_EVENT) | |
2779 | zlog_debug("%s: VRF %s(%u) enabled", __func__, vrf->name, | |
2780 | vrf->vrf_id); | |
2781 | ||
2782 | /* Activate the VRF RIPng instance. */ | |
2783 | if (!ripng->enabled) { | |
2784 | socket = ripng_make_socket(vrf); | |
2785 | if (socket < 0) | |
2786 | return -1; | |
2787 | ||
2788 | ripng_instance_enable(ripng, vrf, socket); | |
2789 | } | |
2790 | ||
2791 | return 0; | |
2792 | } | |
2793 | ||
2794 | static int ripng_vrf_disable(struct vrf *vrf) | |
2795 | { | |
2796 | struct ripng *ripng; | |
2797 | ||
2798 | ripng = ripng_lookup_by_vrf_name(vrf->name); | |
2799 | if (!ripng || !ripng->enabled) | |
2800 | return 0; | |
2801 | ||
2802 | if (IS_RIPNG_DEBUG_EVENT) | |
2803 | zlog_debug("%s: VRF %s(%u) disabled", __func__, vrf->name, | |
2804 | vrf->vrf_id); | |
2805 | ||
2806 | /* Deactivate the VRF RIPng instance. */ | |
2807 | if (ripng->enabled) | |
2808 | ripng_instance_disable(ripng); | |
2809 | ||
2810 | return 0; | |
2811 | } | |
2812 | ||
2813 | void ripng_vrf_init(void) | |
2814 | { | |
2815 | vrf_init(ripng_vrf_new, ripng_vrf_enable, ripng_vrf_disable, | |
2816 | ripng_vrf_delete, NULL); | |
2817 | } | |
2818 | ||
2819 | void ripng_vrf_terminate(void) | |
2820 | { | |
2821 | vrf_terminate(); | |
2822 | } | |
2823 | ||
718e3744 | 2824 | /* Initialize ripng structure and set commands. */ |
4d762f26 | 2825 | void ripng_init(void) |
718e3744 | 2826 | { |
d62a17ae | 2827 | /* Install RIPNG_NODE. */ |
2828 | install_node(&cmd_ripng_node, ripng_config_write); | |
718e3744 | 2829 | |
d62a17ae | 2830 | /* Install ripng commands. */ |
2831 | install_element(VIEW_NODE, &show_ipv6_ripng_cmd); | |
2832 | install_element(VIEW_NODE, &show_ipv6_ripng_status_cmd); | |
718e3744 | 2833 | |
d62a17ae | 2834 | install_default(RIPNG_NODE); |
718e3744 | 2835 | |
718e3744 | 2836 | #if 0 |
ee9216cf | 2837 | install_element (VIEW_NODE, &show_ipv6_protocols_cmd); |
718e3744 | 2838 | install_element (RIPNG_NODE, &ripng_update_timer_cmd); |
2839 | install_element (RIPNG_NODE, &no_ripng_update_timer_cmd); | |
2840 | install_element (RIPNG_NODE, &ripng_timeout_timer_cmd); | |
2841 | install_element (RIPNG_NODE, &no_ripng_timeout_timer_cmd); | |
2842 | install_element (RIPNG_NODE, &ripng_garbage_timer_cmd); | |
2843 | install_element (RIPNG_NODE, &no_ripng_garbage_timer_cmd); | |
2844 | #endif /* 0 */ | |
2845 | ||
d62a17ae | 2846 | ripng_if_init(); |
2847 | ripng_debug_init(); | |
718e3744 | 2848 | |
d62a17ae | 2849 | /* Access list install. */ |
2850 | access_list_init(); | |
2851 | access_list_add_hook(ripng_distribute_update_all_wrapper); | |
2852 | access_list_delete_hook(ripng_distribute_update_all_wrapper); | |
718e3744 | 2853 | |
d62a17ae | 2854 | /* Prefix list initialize.*/ |
2855 | prefix_list_init(); | |
2856 | prefix_list_add_hook(ripng_distribute_update_all); | |
2857 | prefix_list_delete_hook(ripng_distribute_update_all); | |
718e3744 | 2858 | |
d62a17ae | 2859 | /* Distribute list install. */ |
2860 | distribute_list_init(RIPNG_NODE); | |
718e3744 | 2861 | |
d62a17ae | 2862 | /* Route-map for interface. */ |
2863 | ripng_route_map_init(); | |
a94434b6 | 2864 | |
d62a17ae | 2865 | route_map_add_hook(ripng_routemap_update); |
2866 | route_map_delete_hook(ripng_routemap_update); | |
718e3744 | 2867 | |
d62a17ae | 2868 | if_rmap_init(RIPNG_NODE); |
718e3744 | 2869 | } |