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718e3744 | 1 | /* RIPng daemon |
2 | * Copyright (C) 1998, 1999 Kunihiro Ishiguro | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
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 | |
b3a7e30d DL |
46 | DEFINE_MGROUP(RIPNGD, "ripngd") |
47 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG, "RIPng structure") | |
48 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_VRF_NAME, "RIPng VRF name") | |
49 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_ROUTE, "RIPng route info") | |
50 | ||
d62a17ae | 51 | enum { ripng_all_route, |
52 | ripng_changed_route, | |
718e3744 | 53 | }; |
54 | ||
03a38493 PG |
55 | static void ripng_distribute_update(struct distribute_ctx *ctx, |
56 | struct distribute *dist); | |
57 | ||
718e3744 | 58 | /* Prototypes. */ |
d62a17ae | 59 | void ripng_output_process(struct interface *, struct sockaddr_in6 *, int); |
dde7b15b RW |
60 | static void ripng_instance_enable(struct ripng *ripng, struct vrf *vrf, |
61 | int sock); | |
62 | static void ripng_instance_disable(struct ripng *ripng); | |
d62a17ae | 63 | int ripng_triggered_update(struct thread *); |
4b23867c PG |
64 | static void ripng_if_rmap_update(struct if_rmap_ctx *ctx, |
65 | struct if_rmap *if_rmap); | |
718e3744 | 66 | |
dde7b15b RW |
67 | /* Generate rb-tree of RIPng instances. */ |
68 | static inline int ripng_instance_compare(const struct ripng *a, | |
69 | const struct ripng *b) | |
70 | { | |
71 | return strcmp(a->vrf_name, b->vrf_name); | |
72 | } | |
73 | RB_GENERATE(ripng_instance_head, ripng, entry, ripng_instance_compare) | |
74 | ||
75 | struct ripng_instance_head ripng_instances = RB_INITIALIZER(&ripng_instances); | |
76 | ||
718e3744 | 77 | /* RIPng next hop specification. */ |
d62a17ae | 78 | struct ripng_nexthop { |
79 | enum ripng_nexthop_type { | |
80 | RIPNG_NEXTHOP_UNSPEC, | |
81 | RIPNG_NEXTHOP_ADDRESS | |
82 | } flag; | |
83 | struct in6_addr address; | |
718e3744 | 84 | }; |
718e3744 | 85 | |
49e06d25 | 86 | int ripng_route_rte(struct ripng_info *rinfo) |
a94434b6 | 87 | { |
d62a17ae | 88 | return (rinfo->type == ZEBRA_ROUTE_RIPNG |
89 | && rinfo->sub_type == RIPNG_ROUTE_RTE); | |
a94434b6 | 90 | } |
91 | ||
718e3744 | 92 | /* Allocate new ripng information. */ |
4d762f26 | 93 | struct ripng_info *ripng_info_new(void) |
718e3744 | 94 | { |
d62a17ae | 95 | struct ripng_info *new; |
718e3744 | 96 | |
d62a17ae | 97 | new = XCALLOC(MTYPE_RIPNG_ROUTE, sizeof(struct ripng_info)); |
98 | return new; | |
718e3744 | 99 | } |
100 | ||
101 | /* Free ripng information. */ | |
d62a17ae | 102 | void ripng_info_free(struct ripng_info *rinfo) |
718e3744 | 103 | { |
d62a17ae | 104 | XFREE(MTYPE_RIPNG_ROUTE, rinfo); |
718e3744 | 105 | } |
6b0655a2 | 106 | |
5c84b9a5 RW |
107 | struct ripng *ripng_info_get_instance(const struct ripng_info *rinfo) |
108 | { | |
109 | return agg_get_table_info(agg_get_table(rinfo->rp)); | |
110 | } | |
111 | ||
718e3744 | 112 | /* Create ripng socket. */ |
dde7b15b | 113 | int ripng_make_socket(struct vrf *vrf) |
718e3744 | 114 | { |
d62a17ae | 115 | int ret; |
116 | int sock; | |
117 | struct sockaddr_in6 ripaddr; | |
dde7b15b RW |
118 | const char *vrf_dev = NULL; |
119 | ||
120 | /* Make datagram socket. */ | |
121 | if (vrf->vrf_id != VRF_DEFAULT) | |
122 | vrf_dev = vrf->name; | |
0cf6db21 | 123 | frr_with_privs(&ripngd_privs) { |
dde7b15b RW |
124 | sock = vrf_socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP, |
125 | vrf->vrf_id, vrf_dev); | |
126 | if (sock < 0) { | |
127 | flog_err_sys(EC_LIB_SOCKET, | |
128 | "Cannot create UDP socket: %s", | |
129 | safe_strerror(errno)); | |
130 | return -1; | |
131 | } | |
d62a17ae | 132 | } |
718e3744 | 133 | |
dde7b15b RW |
134 | sockopt_reuseaddr(sock); |
135 | sockopt_reuseport(sock); | |
d62a17ae | 136 | setsockopt_so_recvbuf(sock, 8096); |
137 | ret = setsockopt_ipv6_pktinfo(sock, 1); | |
138 | if (ret < 0) | |
44f12f20 | 139 | goto error; |
6d0732c8 | 140 | #ifdef IPTOS_PREC_INTERNETCONTROL |
d62a17ae | 141 | ret = setsockopt_ipv6_tclass(sock, IPTOS_PREC_INTERNETCONTROL); |
142 | if (ret < 0) | |
44f12f20 | 143 | goto error; |
6d0732c8 | 144 | #endif |
d62a17ae | 145 | ret = setsockopt_ipv6_multicast_hops(sock, 255); |
146 | if (ret < 0) | |
44f12f20 | 147 | goto error; |
d62a17ae | 148 | ret = setsockopt_ipv6_multicast_loop(sock, 0); |
149 | if (ret < 0) | |
44f12f20 | 150 | goto error; |
d62a17ae | 151 | ret = setsockopt_ipv6_hoplimit(sock, 1); |
152 | if (ret < 0) | |
44f12f20 | 153 | goto error; |
d62a17ae | 154 | |
155 | memset(&ripaddr, 0, sizeof(ripaddr)); | |
156 | ripaddr.sin6_family = AF_INET6; | |
718e3744 | 157 | #ifdef SIN6_LEN |
d62a17ae | 158 | ripaddr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 159 | #endif /* SIN6_LEN */ |
d62a17ae | 160 | ripaddr.sin6_port = htons(RIPNG_PORT_DEFAULT); |
718e3744 | 161 | |
0cf6db21 | 162 | frr_with_privs(&ripngd_privs) { |
01b9e3fd DL |
163 | ret = bind(sock, (struct sockaddr *)&ripaddr, sizeof(ripaddr)); |
164 | if (ret < 0) { | |
633fc9b1 DL |
165 | zlog_err("Can't bind ripng socket: %s.", |
166 | safe_strerror(errno)); | |
01b9e3fd DL |
167 | goto error; |
168 | } | |
d62a17ae | 169 | } |
d62a17ae | 170 | return sock; |
44f12f20 RW |
171 | |
172 | error: | |
173 | close(sock); | |
174 | return ret; | |
718e3744 | 175 | } |
176 | ||
177 | /* Send RIPng packet. */ | |
d62a17ae | 178 | int ripng_send_packet(caddr_t buf, int bufsize, struct sockaddr_in6 *to, |
179 | struct interface *ifp) | |
180 | { | |
5c84b9a5 RW |
181 | struct ripng_interface *ri = ifp->info; |
182 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 183 | int ret; |
184 | struct msghdr msg; | |
185 | struct iovec iov; | |
186 | struct cmsghdr *cmsgptr; | |
2ae9e38f | 187 | char adata[256] = {}; |
d62a17ae | 188 | struct in6_pktinfo *pkt; |
189 | struct sockaddr_in6 addr; | |
190 | ||
191 | if (IS_RIPNG_DEBUG_SEND) { | |
192 | if (to) | |
193 | zlog_debug("send to %s", inet6_ntoa(to->sin6_addr)); | |
194 | zlog_debug(" send interface %s", ifp->name); | |
195 | zlog_debug(" send packet size %d", bufsize); | |
196 | } | |
197 | ||
198 | memset(&addr, 0, sizeof(struct sockaddr_in6)); | |
199 | addr.sin6_family = AF_INET6; | |
718e3744 | 200 | #ifdef SIN6_LEN |
d62a17ae | 201 | addr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 202 | #endif /* SIN6_LEN */ |
d62a17ae | 203 | addr.sin6_flowinfo = htonl(RIPNG_PRIORITY_DEFAULT); |
204 | ||
205 | /* When destination is specified. */ | |
206 | if (to != NULL) { | |
207 | addr.sin6_addr = to->sin6_addr; | |
208 | addr.sin6_port = to->sin6_port; | |
209 | } else { | |
210 | inet_pton(AF_INET6, RIPNG_GROUP, &addr.sin6_addr); | |
211 | addr.sin6_port = htons(RIPNG_PORT_DEFAULT); | |
212 | } | |
718e3744 | 213 | |
0af35d90 | 214 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 215 | msg.msg_name = (void *)&addr; |
216 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
217 | msg.msg_iov = &iov; | |
218 | msg.msg_iovlen = 1; | |
219 | msg.msg_control = (void *)adata; | |
220 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
221 | ||
222 | iov.iov_base = buf; | |
223 | iov.iov_len = bufsize; | |
224 | ||
225 | cmsgptr = (struct cmsghdr *)adata; | |
226 | cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
227 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
228 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
229 | ||
230 | pkt = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
231 | memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); | |
232 | pkt->ipi6_ifindex = ifp->ifindex; | |
233 | ||
234 | ret = sendmsg(ripng->sock, &msg, 0); | |
235 | ||
236 | if (ret < 0) { | |
237 | if (to) | |
450971aa | 238 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
239 | "RIPng send fail on %s to %s: %s", |
240 | ifp->name, inet6_ntoa(to->sin6_addr), | |
241 | safe_strerror(errno)); | |
d62a17ae | 242 | else |
1c50c1c0 QY |
243 | flog_err_sys(EC_LIB_SOCKET, "RIPng send fail on %s: %s", |
244 | ifp->name, safe_strerror(errno)); | |
d62a17ae | 245 | } |
718e3744 | 246 | |
d62a17ae | 247 | return ret; |
718e3744 | 248 | } |
249 | ||
250 | /* Receive UDP RIPng packet from socket. */ | |
d7c0a89a | 251 | static int ripng_recv_packet(int sock, uint8_t *buf, int bufsize, |
d62a17ae | 252 | struct sockaddr_in6 *from, ifindex_t *ifindex, |
253 | int *hoplimit) | |
254 | { | |
255 | int ret; | |
256 | struct msghdr msg; | |
257 | struct iovec iov; | |
258 | struct cmsghdr *cmsgptr; | |
259 | struct in6_addr dst = {.s6_addr = {0}}; | |
260 | ||
261 | memset(&dst, 0, sizeof(struct in6_addr)); | |
262 | ||
263 | /* Ancillary data. This store cmsghdr and in6_pktinfo. But at this | |
264 | point I can't determine size of cmsghdr */ | |
265 | char adata[1024]; | |
266 | ||
267 | /* Fill in message and iovec. */ | |
0af35d90 | 268 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 269 | msg.msg_name = (void *)from; |
270 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
271 | msg.msg_iov = &iov; | |
272 | msg.msg_iovlen = 1; | |
273 | msg.msg_control = (void *)adata; | |
0d6f7fd6 | 274 | msg.msg_controllen = sizeof(adata); |
d62a17ae | 275 | iov.iov_base = buf; |
276 | iov.iov_len = bufsize; | |
277 | ||
278 | /* If recvmsg fail return minus value. */ | |
279 | ret = recvmsg(sock, &msg, 0); | |
280 | if (ret < 0) | |
281 | return ret; | |
282 | ||
adf0e7c6 | 283 | for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; |
d62a17ae | 284 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) { |
285 | /* I want interface index which this packet comes from. */ | |
286 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
287 | && cmsgptr->cmsg_type == IPV6_PKTINFO) { | |
288 | struct in6_pktinfo *ptr; | |
289 | ||
290 | ptr = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
291 | *ifindex = ptr->ipi6_ifindex; | |
292 | dst = ptr->ipi6_addr; | |
293 | ||
294 | if (*ifindex == 0) | |
295 | zlog_warn( | |
296 | "Interface index returned by IPV6_PKTINFO is zero"); | |
297 | } | |
298 | ||
299 | /* Incoming packet's multicast hop limit. */ | |
300 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
301 | && cmsgptr->cmsg_type == IPV6_HOPLIMIT) { | |
302 | int *phoplimit = (int *)CMSG_DATA(cmsgptr); | |
303 | *hoplimit = *phoplimit; | |
304 | } | |
5eb9d11b | 305 | } |
718e3744 | 306 | |
d62a17ae | 307 | /* Hoplimit check shold be done when destination address is |
308 | multicast address. */ | |
309 | if (!IN6_IS_ADDR_MULTICAST(&dst)) | |
310 | *hoplimit = -1; | |
718e3744 | 311 | |
d62a17ae | 312 | return ret; |
718e3744 | 313 | } |
314 | ||
315 | /* Dump rip packet */ | |
d62a17ae | 316 | void ripng_packet_dump(struct ripng_packet *packet, int size, |
317 | const char *sndrcv) | |
318 | { | |
319 | caddr_t lim; | |
320 | struct rte *rte; | |
321 | const char *command_str; | |
322 | ||
323 | /* Set command string. */ | |
324 | if (packet->command == RIPNG_REQUEST) | |
325 | command_str = "request"; | |
326 | else if (packet->command == RIPNG_RESPONSE) | |
327 | command_str = "response"; | |
328 | else | |
329 | command_str = "unknown"; | |
330 | ||
331 | /* Dump packet header. */ | |
332 | zlog_debug("%s %s version %d packet size %d", sndrcv, command_str, | |
333 | packet->version, size); | |
334 | ||
335 | /* Dump each routing table entry. */ | |
336 | rte = packet->rte; | |
337 | ||
338 | for (lim = (caddr_t)packet + size; (caddr_t)rte < lim; rte++) { | |
339 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
340 | zlog_debug(" nexthop %s/%d", inet6_ntoa(rte->addr), | |
341 | rte->prefixlen); | |
342 | else | |
343 | zlog_debug(" %s/%d metric %d tag %" ROUTE_TAG_PRI, | |
344 | inet6_ntoa(rte->addr), rte->prefixlen, | |
345 | rte->metric, (route_tag_t)ntohs(rte->tag)); | |
346 | } | |
718e3744 | 347 | } |
348 | ||
349 | /* RIPng next hop address RTE (Route Table Entry). */ | |
d62a17ae | 350 | static void ripng_nexthop_rte(struct rte *rte, struct sockaddr_in6 *from, |
351 | struct ripng_nexthop *nexthop) | |
352 | { | |
353 | char buf[INET6_BUFSIZ]; | |
354 | ||
355 | /* Logging before checking RTE. */ | |
356 | if (IS_RIPNG_DEBUG_RECV) | |
357 | zlog_debug("RIPng nexthop RTE address %s tag %" ROUTE_TAG_PRI | |
358 | " prefixlen %d", | |
359 | inet6_ntoa(rte->addr), (route_tag_t)ntohs(rte->tag), | |
360 | rte->prefixlen); | |
361 | ||
362 | /* RFC2080 2.1.1 Next Hop: | |
363 | The route tag and prefix length in the next hop RTE must be | |
364 | set to zero on sending and ignored on receiption. */ | |
365 | if (ntohs(rte->tag) != 0) | |
366 | zlog_warn( | |
367 | "RIPng nexthop RTE with non zero tag value %" ROUTE_TAG_PRI | |
368 | " from %s", | |
369 | (route_tag_t)ntohs(rte->tag), | |
370 | inet6_ntoa(from->sin6_addr)); | |
371 | ||
372 | if (rte->prefixlen != 0) | |
373 | zlog_warn( | |
374 | "RIPng nexthop RTE with non zero prefixlen value %d from %s", | |
375 | rte->prefixlen, inet6_ntoa(from->sin6_addr)); | |
376 | ||
377 | /* Specifying a value of 0:0:0:0:0:0:0:0 in the prefix field of a | |
378 | next hop RTE indicates that the next hop address should be the | |
379 | originator of the RIPng advertisement. An address specified as a | |
380 | next hop must be a link-local address. */ | |
381 | if (IN6_IS_ADDR_UNSPECIFIED(&rte->addr)) { | |
382 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
383 | memset(&nexthop->address, 0, sizeof(struct in6_addr)); | |
384 | return; | |
385 | } | |
718e3744 | 386 | |
d62a17ae | 387 | if (IN6_IS_ADDR_LINKLOCAL(&rte->addr)) { |
388 | nexthop->flag = RIPNG_NEXTHOP_ADDRESS; | |
389 | IPV6_ADDR_COPY(&nexthop->address, &rte->addr); | |
390 | return; | |
391 | } | |
718e3744 | 392 | |
d62a17ae | 393 | /* The purpose of the next hop RTE is to eliminate packets being |
394 | routed through extra hops in the system. It is particularly useful | |
395 | when RIPng is not being run on all of the routers on a network. | |
396 | Note that next hop RTE is "advisory". That is, if the provided | |
397 | information is ignored, a possibly sub-optimal, but absolutely | |
398 | valid, route may be taken. If the received next hop address is not | |
399 | a link-local address, it should be treated as 0:0:0:0:0:0:0:0. */ | |
400 | zlog_warn("RIPng nexthop RTE with non link-local address %s from %s", | |
401 | inet6_ntoa(rte->addr), | |
402 | inet_ntop(AF_INET6, &from->sin6_addr, buf, INET6_BUFSIZ)); | |
718e3744 | 403 | |
d62a17ae | 404 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; |
405 | memset(&nexthop->address, 0, sizeof(struct in6_addr)); | |
718e3744 | 406 | |
d62a17ae | 407 | return; |
718e3744 | 408 | } |
409 | ||
410 | /* If ifp has same link-local address then return 1. */ | |
d62a17ae | 411 | static int ripng_lladdr_check(struct interface *ifp, struct in6_addr *addr) |
718e3744 | 412 | { |
d62a17ae | 413 | struct listnode *node; |
414 | struct connected *connected; | |
415 | struct prefix *p; | |
718e3744 | 416 | |
d62a17ae | 417 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
418 | p = connected->address; | |
718e3744 | 419 | |
d62a17ae | 420 | if (p->family == AF_INET6 |
421 | && IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6) | |
422 | && IN6_ARE_ADDR_EQUAL(&p->u.prefix6, addr)) | |
423 | return 1; | |
424 | } | |
425 | return 0; | |
718e3744 | 426 | } |
427 | ||
428 | /* RIPng route garbage collect timer. */ | |
d62a17ae | 429 | static int ripng_garbage_collect(struct thread *t) |
718e3744 | 430 | { |
d62a17ae | 431 | struct ripng_info *rinfo; |
fe08ba7e | 432 | struct agg_node *rp; |
718e3744 | 433 | |
d62a17ae | 434 | rinfo = THREAD_ARG(t); |
435 | rinfo->t_garbage_collect = NULL; | |
718e3744 | 436 | |
d62a17ae | 437 | /* Off timeout timer. */ |
438 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
718e3744 | 439 | |
d62a17ae | 440 | /* Get route_node pointer. */ |
441 | rp = rinfo->rp; | |
442 | ||
443 | /* Unlock route_node. */ | |
444 | listnode_delete(rp->info, rinfo); | |
445 | if (list_isempty((struct list *)rp->info)) { | |
6a154c88 | 446 | list_delete((struct list **)&rp->info); |
fe08ba7e | 447 | agg_unlock_node(rp); |
d62a17ae | 448 | } |
718e3744 | 449 | |
d62a17ae | 450 | /* Free RIPng routing information. */ |
451 | ripng_info_free(rinfo); | |
718e3744 | 452 | |
d62a17ae | 453 | return 0; |
718e3744 | 454 | } |
455 | ||
5c84b9a5 | 456 | static void ripng_timeout_update(struct ripng *ripng, struct ripng_info *rinfo); |
c880b636 FL |
457 | |
458 | /* Add new route to the ECMP list. | |
fac76f9c FL |
459 | * RETURN: the new entry added in the list, or NULL if it is not the first |
460 | * entry and ECMP is not allowed. | |
c880b636 | 461 | */ |
5c84b9a5 RW |
462 | struct ripng_info *ripng_ecmp_add(struct ripng *ripng, |
463 | struct ripng_info *rinfo_new) | |
718e3744 | 464 | { |
fe08ba7e | 465 | struct agg_node *rp = rinfo_new->rp; |
d62a17ae | 466 | struct ripng_info *rinfo = NULL; |
467 | struct list *list = NULL; | |
718e3744 | 468 | |
d62a17ae | 469 | if (rp->info == NULL) |
470 | rp->info = list_new(); | |
471 | list = (struct list *)rp->info; | |
718e3744 | 472 | |
d62a17ae | 473 | /* If ECMP is not allowed and some entry already exists in the list, |
474 | * do nothing. */ | |
475 | if (listcount(list) && !ripng->ecmp) | |
476 | return NULL; | |
fac76f9c | 477 | |
d62a17ae | 478 | rinfo = ripng_info_new(); |
479 | memcpy(rinfo, rinfo_new, sizeof(struct ripng_info)); | |
480 | listnode_add(list, rinfo); | |
c880b636 | 481 | |
d62a17ae | 482 | if (ripng_route_rte(rinfo)) { |
5c84b9a5 RW |
483 | ripng_timeout_update(ripng, rinfo); |
484 | ripng_zebra_ipv6_add(ripng, rp); | |
d62a17ae | 485 | } |
c880b636 | 486 | |
d62a17ae | 487 | ripng_aggregate_increment(rp, rinfo); |
c880b636 | 488 | |
d62a17ae | 489 | /* Set the route change flag on the first entry. */ |
490 | rinfo = listgetdata(listhead(list)); | |
491 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 492 | |
d62a17ae | 493 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 494 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
c880b636 | 495 | |
d62a17ae | 496 | return rinfo; |
c880b636 FL |
497 | } |
498 | ||
499 | /* Replace the ECMP list with the new route. | |
500 | * RETURN: the new entry added in the list | |
501 | */ | |
5c84b9a5 RW |
502 | struct ripng_info *ripng_ecmp_replace(struct ripng *ripng, |
503 | struct ripng_info *rinfo_new) | |
d62a17ae | 504 | { |
fe08ba7e | 505 | struct agg_node *rp = rinfo_new->rp; |
d62a17ae | 506 | struct list *list = (struct list *)rp->info; |
507 | struct ripng_info *rinfo = NULL, *tmp_rinfo = NULL; | |
508 | struct listnode *node = NULL, *nextnode = NULL; | |
509 | ||
510 | if (list == NULL || listcount(list) == 0) | |
5c84b9a5 | 511 | return ripng_ecmp_add(ripng, rinfo_new); |
d62a17ae | 512 | |
513 | /* Get the first entry */ | |
514 | rinfo = listgetdata(listhead(list)); | |
515 | ||
516 | /* Learnt route replaced by a local one. Delete it from zebra. */ | |
517 | if (ripng_route_rte(rinfo) && !ripng_route_rte(rinfo_new)) | |
518 | if (CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
5c84b9a5 | 519 | ripng_zebra_ipv6_delete(ripng, rp); |
d62a17ae | 520 | |
521 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
522 | ripng_aggregate_decrement_list(rp, list); | |
523 | ||
524 | /* Re-use the first entry, and delete the others. */ | |
525 | for (ALL_LIST_ELEMENTS(list, node, nextnode, tmp_rinfo)) | |
526 | if (tmp_rinfo != rinfo) { | |
527 | RIPNG_TIMER_OFF(tmp_rinfo->t_timeout); | |
528 | RIPNG_TIMER_OFF(tmp_rinfo->t_garbage_collect); | |
529 | list_delete_node(list, node); | |
530 | ripng_info_free(tmp_rinfo); | |
531 | } | |
c880b636 | 532 | |
d62a17ae | 533 | RIPNG_TIMER_OFF(rinfo->t_timeout); |
534 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
535 | memcpy(rinfo, rinfo_new, sizeof(struct ripng_info)); | |
c880b636 | 536 | |
d62a17ae | 537 | if (ripng_route_rte(rinfo)) { |
5c84b9a5 | 538 | ripng_timeout_update(ripng, rinfo); |
d62a17ae | 539 | /* The ADD message implies an update. */ |
5c84b9a5 | 540 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 541 | } |
542 | ||
543 | ripng_aggregate_increment(rp, rinfo); | |
544 | ||
545 | /* Set the route change flag. */ | |
546 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 547 | |
d62a17ae | 548 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 549 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
718e3744 | 550 | |
d62a17ae | 551 | return rinfo; |
c880b636 FL |
552 | } |
553 | ||
554 | /* Delete one route from the ECMP list. | |
555 | * RETURN: | |
556 | * null - the entry is freed, and other entries exist in the list | |
557 | * the entry - the entry is the last one in the list; its metric is set | |
558 | * to INFINITY, and the garbage collector is started for it | |
559 | */ | |
5c84b9a5 RW |
560 | struct ripng_info *ripng_ecmp_delete(struct ripng *ripng, |
561 | struct ripng_info *rinfo) | |
d62a17ae | 562 | { |
fe08ba7e | 563 | struct agg_node *rp = rinfo->rp; |
d62a17ae | 564 | struct list *list = (struct list *)rp->info; |
565 | ||
566 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
567 | ||
568 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
569 | ripng_aggregate_decrement(rp, rinfo); | |
570 | ||
571 | if (listcount(list) > 1) { | |
572 | /* Some other ECMP entries still exist. Just delete this entry. | |
573 | */ | |
574 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
575 | listnode_delete(list, rinfo); | |
576 | if (ripng_route_rte(rinfo) | |
577 | && CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
578 | /* The ADD message implies the update. */ | |
5c84b9a5 | 579 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 580 | ripng_info_free(rinfo); |
581 | rinfo = NULL; | |
582 | } else { | |
583 | assert(rinfo == listgetdata(listhead(list))); | |
584 | ||
585 | /* This is the only entry left in the list. We must keep it in | |
586 | * the list for garbage collection time, with INFINITY metric. | |
587 | */ | |
588 | ||
589 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
590 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, ripng_garbage_collect, | |
591 | ripng->garbage_time); | |
592 | ||
593 | if (ripng_route_rte(rinfo) | |
594 | && CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
5c84b9a5 | 595 | ripng_zebra_ipv6_delete(ripng, rp); |
d62a17ae | 596 | } |
c880b636 | 597 | |
d62a17ae | 598 | /* Set the route change flag on the first entry. */ |
599 | rinfo = listgetdata(listhead(list)); | |
600 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 601 | |
d62a17ae | 602 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 603 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
c880b636 | 604 | |
d62a17ae | 605 | return rinfo; |
c880b636 FL |
606 | } |
607 | ||
608 | /* Timeout RIPng routes. */ | |
d62a17ae | 609 | static int ripng_timeout(struct thread *t) |
c880b636 | 610 | { |
5c84b9a5 RW |
611 | struct ripng_info *rinfo = THREAD_ARG(t); |
612 | struct ripng *ripng = ripng_info_get_instance(rinfo); | |
613 | ||
614 | ripng_ecmp_delete(ripng, rinfo); | |
615 | ||
d62a17ae | 616 | return 0; |
718e3744 | 617 | } |
618 | ||
5c84b9a5 | 619 | static void ripng_timeout_update(struct ripng *ripng, struct ripng_info *rinfo) |
718e3744 | 620 | { |
d62a17ae | 621 | if (rinfo->metric != RIPNG_METRIC_INFINITY) { |
622 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
5c84b9a5 RW |
623 | thread_add_timer(master, ripng_timeout, rinfo, |
624 | ripng->timeout_time, &rinfo->t_timeout); | |
d62a17ae | 625 | } |
718e3744 | 626 | } |
627 | ||
d62a17ae | 628 | static int ripng_filter(int ripng_distribute, struct prefix_ipv6 *p, |
629 | struct ripng_interface *ri) | |
630 | { | |
631 | struct distribute *dist; | |
632 | struct access_list *alist; | |
633 | struct prefix_list *plist; | |
634 | int distribute = ripng_distribute == RIPNG_FILTER_OUT | |
635 | ? DISTRIBUTE_V6_OUT | |
636 | : DISTRIBUTE_V6_IN; | |
637 | const char *inout = ripng_distribute == RIPNG_FILTER_OUT ? "out" : "in"; | |
638 | ||
639 | /* Input distribute-list filtering. */ | |
640 | if (ri->list[ripng_distribute]) { | |
641 | if (access_list_apply(ri->list[ripng_distribute], | |
642 | (struct prefix *)p) | |
643 | == FILTER_DENY) { | |
644 | if (IS_RIPNG_DEBUG_PACKET) | |
645 | zlog_debug("%s/%d filtered by distribute %s", | |
646 | inet6_ntoa(p->prefix), p->prefixlen, | |
647 | inout); | |
648 | return -1; | |
649 | } | |
650 | } | |
651 | if (ri->prefix[ripng_distribute]) { | |
652 | if (prefix_list_apply(ri->prefix[ripng_distribute], | |
653 | (struct prefix *)p) | |
654 | == PREFIX_DENY) { | |
655 | if (IS_RIPNG_DEBUG_PACKET) | |
656 | zlog_debug("%s/%d filtered by prefix-list %s", | |
657 | inet6_ntoa(p->prefix), p->prefixlen, | |
658 | inout); | |
659 | return -1; | |
a94434b6 | 660 | } |
a94434b6 | 661 | } |
a94434b6 | 662 | |
d62a17ae | 663 | /* All interface filter check. */ |
dde7b15b | 664 | dist = distribute_lookup(ri->ripng->distribute_ctx, NULL); |
d62a17ae | 665 | if (dist) { |
666 | if (dist->list[distribute]) { | |
667 | alist = access_list_lookup(AFI_IP6, | |
668 | dist->list[distribute]); | |
669 | ||
670 | if (alist) { | |
671 | if (access_list_apply(alist, (struct prefix *)p) | |
672 | == FILTER_DENY) { | |
673 | if (IS_RIPNG_DEBUG_PACKET) | |
674 | zlog_debug( | |
675 | "%s/%d filtered by distribute %s", | |
676 | inet6_ntoa(p->prefix), | |
677 | p->prefixlen, inout); | |
678 | return -1; | |
679 | } | |
680 | } | |
a94434b6 | 681 | } |
d62a17ae | 682 | if (dist->prefix[distribute]) { |
683 | plist = prefix_list_lookup(AFI_IP6, | |
684 | dist->prefix[distribute]); | |
685 | ||
686 | if (plist) { | |
687 | if (prefix_list_apply(plist, (struct prefix *)p) | |
688 | == PREFIX_DENY) { | |
689 | if (IS_RIPNG_DEBUG_PACKET) | |
690 | zlog_debug( | |
691 | "%s/%d filtered by prefix-list %s", | |
692 | inet6_ntoa(p->prefix), | |
693 | p->prefixlen, inout); | |
694 | return -1; | |
695 | } | |
696 | } | |
a94434b6 | 697 | } |
a94434b6 | 698 | } |
d62a17ae | 699 | return 0; |
a94434b6 | 700 | } |
701 | ||
718e3744 | 702 | /* Process RIPng route according to RFC2080. */ |
d62a17ae | 703 | static void ripng_route_process(struct rte *rte, struct sockaddr_in6 *from, |
704 | struct ripng_nexthop *ripng_nexthop, | |
705 | struct interface *ifp) | |
706 | { | |
707 | int ret; | |
708 | struct prefix_ipv6 p; | |
fe08ba7e | 709 | struct agg_node *rp; |
d62a17ae | 710 | struct ripng_info *rinfo = NULL, newinfo; |
711 | struct ripng_interface *ri; | |
5c84b9a5 | 712 | struct ripng *ripng; |
d62a17ae | 713 | struct in6_addr *nexthop; |
714 | int same = 0; | |
715 | struct list *list = NULL; | |
716 | struct listnode *node = NULL; | |
717 | ||
718 | /* Make prefix structure. */ | |
719 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
720 | p.family = AF_INET6; | |
721 | /* p.prefix = rte->addr; */ | |
722 | IPV6_ADDR_COPY(&p.prefix, &rte->addr); | |
723 | p.prefixlen = rte->prefixlen; | |
724 | ||
725 | /* Make sure mask is applied. */ | |
726 | /* XXX We have to check the prefix is valid or not before call | |
727 | apply_mask_ipv6. */ | |
728 | apply_mask_ipv6(&p); | |
729 | ||
d62a17ae | 730 | ri = ifp->info; |
5c84b9a5 | 731 | ripng = ri->ripng; |
d62a17ae | 732 | |
5c84b9a5 | 733 | /* Apply input filters. */ |
d62a17ae | 734 | ret = ripng_filter(RIPNG_FILTER_IN, &p, ri); |
735 | if (ret < 0) | |
736 | return; | |
737 | ||
738 | memset(&newinfo, 0, sizeof(newinfo)); | |
739 | newinfo.type = ZEBRA_ROUTE_RIPNG; | |
740 | newinfo.sub_type = RIPNG_ROUTE_RTE; | |
741 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
742 | newinfo.nexthop = ripng_nexthop->address; | |
743 | else | |
744 | newinfo.nexthop = from->sin6_addr; | |
745 | newinfo.from = from->sin6_addr; | |
746 | newinfo.ifindex = ifp->ifindex; | |
747 | newinfo.metric = rte->metric; | |
748 | newinfo.metric_out = rte->metric; /* XXX */ | |
749 | newinfo.tag = ntohs(rte->tag); /* XXX */ | |
750 | ||
751 | /* Modify entry. */ | |
752 | if (ri->routemap[RIPNG_FILTER_IN]) { | |
d62a17ae | 753 | ret = route_map_apply(ri->routemap[RIPNG_FILTER_IN], |
754 | (struct prefix *)&p, RMAP_RIPNG, | |
755 | &newinfo); | |
756 | ||
757 | if (ret == RMAP_DENYMATCH) { | |
758 | if (IS_RIPNG_DEBUG_PACKET) | |
759 | zlog_debug( | |
760 | "RIPng %s/%d is filtered by route-map in", | |
761 | inet6_ntoa(p.prefix), p.prefixlen); | |
762 | return; | |
763 | } | |
718e3744 | 764 | |
d62a17ae | 765 | /* Get back the object */ |
766 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) { | |
767 | if (!IPV6_ADDR_SAME(&newinfo.nexthop, | |
768 | &ripng_nexthop->address)) { | |
769 | /* the nexthop get changed by the routemap */ | |
770 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) | |
771 | ripng_nexthop->address = | |
772 | newinfo.nexthop; | |
773 | else | |
774 | ripng_nexthop->address = in6addr_any; | |
775 | } | |
776 | } else { | |
777 | if (!IPV6_ADDR_SAME(&newinfo.nexthop, | |
778 | &from->sin6_addr)) { | |
779 | /* the nexthop get changed by the routemap */ | |
780 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) { | |
781 | ripng_nexthop->flag = | |
782 | RIPNG_NEXTHOP_ADDRESS; | |
783 | ripng_nexthop->address = | |
784 | newinfo.nexthop; | |
785 | } | |
786 | } | |
787 | } | |
788 | rte->tag = htons(newinfo.tag_out); /* XXX */ | |
9d303b37 DL |
789 | rte->metric = |
790 | newinfo.metric_out; /* XXX: the routemap uses the | |
791 | metric_out field */ | |
d62a17ae | 792 | } |
a94434b6 | 793 | |
d62a17ae | 794 | /* Once the entry has been validated, update the metric by |
795 | * adding the cost of the network on wich the message | |
796 | * arrived. If the result is greater than infinity, use infinity | |
797 | * (RFC2453 Sec. 3.9.2) | |
798 | **/ | |
799 | ||
800 | /* Zebra ripngd can handle offset-list in. */ | |
5c84b9a5 | 801 | ret = ripng_offset_list_apply_in(ripng, &p, ifp, &rte->metric); |
d62a17ae | 802 | |
803 | /* If offset-list does not modify the metric use interface's | |
804 | * one. */ | |
805 | if (!ret) | |
806 | rte->metric += ifp->metric ? ifp->metric : 1; | |
807 | ||
808 | if (rte->metric > RIPNG_METRIC_INFINITY) | |
809 | rte->metric = RIPNG_METRIC_INFINITY; | |
810 | ||
811 | /* Set nexthop pointer. */ | |
812 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
813 | nexthop = &ripng_nexthop->address; | |
814 | else | |
815 | nexthop = &from->sin6_addr; | |
816 | ||
817 | /* Lookup RIPng routing table. */ | |
fe08ba7e | 818 | rp = agg_node_get(ripng->table, (struct prefix *)&p); |
d62a17ae | 819 | |
820 | newinfo.rp = rp; | |
821 | newinfo.nexthop = *nexthop; | |
822 | newinfo.metric = rte->metric; | |
823 | newinfo.tag = ntohs(rte->tag); | |
824 | ||
825 | /* Check to see whether there is already RIPng route on the table. */ | |
826 | if ((list = rp->info) != NULL) | |
827 | for (ALL_LIST_ELEMENTS_RO(list, node, rinfo)) { | |
828 | /* Need to compare with redistributed entry or local | |
829 | * entry */ | |
830 | if (!ripng_route_rte(rinfo)) | |
831 | break; | |
832 | ||
833 | if (IPV6_ADDR_SAME(&rinfo->from, &from->sin6_addr) | |
834 | && IPV6_ADDR_SAME(&rinfo->nexthop, nexthop)) | |
835 | break; | |
836 | ||
837 | if (!listnextnode(node)) { | |
838 | /* Not found in the list */ | |
839 | ||
840 | if (rte->metric > rinfo->metric) { | |
841 | /* New route has a greater metric. | |
842 | * Discard it. */ | |
fe08ba7e | 843 | agg_unlock_node(rp); |
d62a17ae | 844 | return; |
845 | } | |
846 | ||
847 | if (rte->metric < rinfo->metric) | |
848 | /* New route has a smaller metric. | |
849 | * Replace the ECMP list | |
850 | * with the new one in below. */ | |
851 | break; | |
852 | ||
853 | /* Metrics are same. Unless ECMP is disabled, | |
854 | * keep "rinfo" null and | |
855 | * the new route is added in the ECMP list in | |
856 | * below. */ | |
857 | if (!ripng->ecmp) | |
858 | break; | |
859 | } | |
860 | } | |
718e3744 | 861 | |
d62a17ae | 862 | if (rinfo) { |
863 | /* Redistributed route check. */ | |
864 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
865 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 866 | agg_unlock_node(rp); |
d62a17ae | 867 | return; |
868 | } | |
a94434b6 | 869 | |
d62a17ae | 870 | /* Local static route. */ |
871 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
872 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) | |
873 | || (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) | |
874 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 875 | agg_unlock_node(rp); |
d62a17ae | 876 | return; |
877 | } | |
878 | } | |
a94434b6 | 879 | |
d62a17ae | 880 | if (!rinfo) { |
881 | /* Now, check to see whether there is already an explicit route | |
882 | for the destination prefix. If there is no such route, add | |
883 | this route to the routing table, unless the metric is | |
884 | infinity (there is no point in adding a route which | |
885 | unusable). */ | |
886 | if (rte->metric != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 887 | ripng_ecmp_add(ripng, &newinfo); |
3e7a9652 | 888 | else |
fe08ba7e | 889 | agg_unlock_node(rp); |
d62a17ae | 890 | } else { |
891 | /* If there is an existing route, compare the next hop address | |
892 | to the address of the router from which the datagram came. | |
893 | If this datagram is from the same router as the existing | |
894 | route, reinitialize the timeout. */ | |
895 | same = (IN6_ARE_ADDR_EQUAL(&rinfo->from, &from->sin6_addr) | |
896 | && (rinfo->ifindex == ifp->ifindex)); | |
897 | ||
898 | /* | |
899 | * RFC 2080 - Section 2.4.2: | |
900 | * "If the new metric is the same as the old one, examine the | |
901 | * timeout | |
902 | * for the existing route. If it is at least halfway to the | |
903 | * expiration | |
904 | * point, switch to the new route. This heuristic is optional, | |
905 | * but | |
906 | * highly recommended". | |
907 | */ | |
908 | if (!ripng->ecmp && !same && rinfo->metric == rte->metric | |
909 | && rinfo->t_timeout | |
910 | && (thread_timer_remain_second(rinfo->t_timeout) | |
911 | < (ripng->timeout_time / 2))) { | |
5c84b9a5 | 912 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 913 | } |
914 | /* Next, compare the metrics. If the datagram is from the same | |
915 | router as the existing route, and the new metric is different | |
916 | than the old one; or, if the new metric is lower than the old | |
917 | one; do the following actions: */ | |
918 | else if ((same && rinfo->metric != rte->metric) | |
919 | || rte->metric < rinfo->metric) { | |
920 | if (listcount(list) == 1) { | |
921 | if (newinfo.metric != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 922 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 923 | else |
5c84b9a5 | 924 | ripng_ecmp_delete(ripng, rinfo); |
d62a17ae | 925 | } else { |
926 | if (newinfo.metric < rinfo->metric) | |
5c84b9a5 | 927 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 928 | else /* newinfo.metric > rinfo->metric */ |
5c84b9a5 | 929 | ripng_ecmp_delete(ripng, rinfo); |
d62a17ae | 930 | } |
931 | } else /* same & no change */ | |
5c84b9a5 | 932 | ripng_timeout_update(ripng, rinfo); |
d62a17ae | 933 | |
934 | /* Unlock tempolary lock of the route. */ | |
fe08ba7e | 935 | agg_unlock_node(rp); |
d62a17ae | 936 | } |
718e3744 | 937 | } |
938 | ||
d62a17ae | 939 | /* Add redistributed route to RIPng table. */ |
5c84b9a5 RW |
940 | void ripng_redistribute_add(struct ripng *ripng, int type, int sub_type, |
941 | struct prefix_ipv6 *p, ifindex_t ifindex, | |
942 | struct in6_addr *nexthop, route_tag_t tag) | |
d62a17ae | 943 | { |
fe08ba7e | 944 | struct agg_node *rp; |
d62a17ae | 945 | struct ripng_info *rinfo = NULL, newinfo; |
946 | struct list *list = NULL; | |
947 | ||
948 | /* Redistribute route */ | |
949 | if (IN6_IS_ADDR_LINKLOCAL(&p->prefix)) | |
950 | return; | |
951 | if (IN6_IS_ADDR_LOOPBACK(&p->prefix)) | |
952 | return; | |
953 | ||
fe08ba7e | 954 | rp = agg_node_get(ripng->table, (struct prefix *)p); |
d62a17ae | 955 | |
956 | memset(&newinfo, 0, sizeof(struct ripng_info)); | |
957 | newinfo.type = type; | |
958 | newinfo.sub_type = sub_type; | |
959 | newinfo.ifindex = ifindex; | |
960 | newinfo.metric = 1; | |
961 | if (tag <= UINT16_MAX) /* RIPng only supports 16 bit tags */ | |
962 | newinfo.tag = tag; | |
963 | newinfo.rp = rp; | |
964 | if (nexthop && IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
965 | newinfo.nexthop = *nexthop; | |
966 | ||
967 | if ((list = rp->info) != NULL && listcount(list) != 0) { | |
968 | rinfo = listgetdata(listhead(list)); | |
969 | ||
970 | if (rinfo->type == ZEBRA_ROUTE_CONNECT | |
971 | && rinfo->sub_type == RIPNG_ROUTE_INTERFACE | |
972 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 973 | agg_unlock_node(rp); |
d62a17ae | 974 | return; |
975 | } | |
976 | ||
977 | /* Manually configured RIPng route check. | |
978 | * They have the precedence on all the other entries. | |
979 | **/ | |
980 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
981 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) | |
982 | || (rinfo->sub_type == RIPNG_ROUTE_DEFAULT))) { | |
983 | if (type != ZEBRA_ROUTE_RIPNG | |
984 | || ((sub_type != RIPNG_ROUTE_STATIC) | |
985 | && (sub_type != RIPNG_ROUTE_DEFAULT))) { | |
fe08ba7e | 986 | agg_unlock_node(rp); |
d62a17ae | 987 | return; |
988 | } | |
989 | } | |
718e3744 | 990 | |
5c84b9a5 | 991 | ripng_ecmp_replace(ripng, &newinfo); |
fe08ba7e | 992 | agg_unlock_node(rp); |
d62a17ae | 993 | } else |
5c84b9a5 | 994 | ripng_ecmp_add(ripng, &newinfo); |
d62a17ae | 995 | |
996 | if (IS_RIPNG_DEBUG_EVENT) { | |
997 | if (!nexthop) | |
998 | zlog_debug( | |
999 | "Redistribute new prefix %s/%d on the interface %s", | |
1000 | inet6_ntoa(p->prefix), p->prefixlen, | |
dde7b15b | 1001 | ifindex2ifname(ifindex, ripng->vrf->vrf_id)); |
d62a17ae | 1002 | else |
1003 | zlog_debug( | |
1004 | "Redistribute new prefix %s/%d with nexthop %s on the interface %s", | |
1005 | inet6_ntoa(p->prefix), p->prefixlen, | |
1006 | inet6_ntoa(*nexthop), | |
dde7b15b | 1007 | ifindex2ifname(ifindex, ripng->vrf->vrf_id)); |
d62a17ae | 1008 | } |
718e3744 | 1009 | |
5c84b9a5 | 1010 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1011 | } |
718e3744 | 1012 | |
d62a17ae | 1013 | /* Delete redistributed route to RIPng table. */ |
5c84b9a5 RW |
1014 | void ripng_redistribute_delete(struct ripng *ripng, int type, int sub_type, |
1015 | struct prefix_ipv6 *p, ifindex_t ifindex) | |
d62a17ae | 1016 | { |
fe08ba7e | 1017 | struct agg_node *rp; |
d62a17ae | 1018 | struct ripng_info *rinfo; |
1019 | ||
1020 | if (IN6_IS_ADDR_LINKLOCAL(&p->prefix)) | |
1021 | return; | |
1022 | if (IN6_IS_ADDR_LOOPBACK(&p->prefix)) | |
1023 | return; | |
1024 | ||
fe08ba7e | 1025 | rp = agg_node_lookup(ripng->table, (struct prefix *)p); |
d62a17ae | 1026 | |
1027 | if (rp) { | |
1028 | struct list *list = rp->info; | |
1029 | ||
1030 | if (list != NULL && listcount(list) != 0) { | |
1031 | rinfo = listgetdata(listhead(list)); | |
1032 | if (rinfo != NULL && rinfo->type == type | |
1033 | && rinfo->sub_type == sub_type | |
1034 | && rinfo->ifindex == ifindex) { | |
1035 | /* Perform poisoned reverse. */ | |
1036 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1037 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, | |
1038 | ripng_garbage_collect, | |
1039 | ripng->garbage_time); | |
1040 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
1041 | ||
1042 | /* Aggregate count decrement. */ | |
1043 | ripng_aggregate_decrement(rp, rinfo); | |
1044 | ||
1045 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1046 | ||
1047 | if (IS_RIPNG_DEBUG_EVENT) | |
1048 | zlog_debug( | |
1049 | "Poisone %s/%d on the interface %s with an " | |
1050 | "infinity metric [delete]", | |
1051 | inet6_ntoa(p->prefix), | |
1052 | p->prefixlen, | |
dde7b15b RW |
1053 | ifindex2ifname( |
1054 | ifindex, | |
1055 | ripng->vrf->vrf_id)); | |
d62a17ae | 1056 | |
5c84b9a5 | 1057 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1058 | } |
1059 | } | |
fe08ba7e | 1060 | agg_unlock_node(rp); |
d62a17ae | 1061 | } |
718e3744 | 1062 | } |
1063 | ||
1064 | /* Withdraw redistributed route. */ | |
5c84b9a5 | 1065 | void ripng_redistribute_withdraw(struct ripng *ripng, int type) |
d62a17ae | 1066 | { |
fe08ba7e | 1067 | struct agg_node *rp; |
d62a17ae | 1068 | struct ripng_info *rinfo = NULL; |
1069 | struct list *list = NULL; | |
1070 | ||
fe08ba7e | 1071 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 1072 | if ((list = rp->info) != NULL) { |
1073 | rinfo = listgetdata(listhead(list)); | |
1074 | if ((rinfo->type == type) | |
1075 | && (rinfo->sub_type != RIPNG_ROUTE_INTERFACE)) { | |
1076 | /* Perform poisoned reverse. */ | |
1077 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1078 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, | |
1079 | ripng_garbage_collect, | |
1080 | ripng->garbage_time); | |
1081 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
1082 | ||
1083 | /* Aggregate count decrement. */ | |
1084 | ripng_aggregate_decrement(rp, rinfo); | |
1085 | ||
1086 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1087 | ||
1088 | if (IS_RIPNG_DEBUG_EVENT) { | |
1089 | struct prefix_ipv6 *p = | |
26a3ffd6 DS |
1090 | (struct prefix_ipv6 *) |
1091 | agg_node_get_prefix(rp); | |
d62a17ae | 1092 | |
1093 | zlog_debug( | |
1094 | "Poisone %s/%d on the interface %s [withdraw]", | |
1095 | inet6_ntoa(p->prefix), | |
1096 | p->prefixlen, | |
dde7b15b RW |
1097 | ifindex2ifname( |
1098 | rinfo->ifindex, | |
1099 | ripng->vrf->vrf_id)); | |
d62a17ae | 1100 | } |
1101 | ||
5c84b9a5 | 1102 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1103 | } |
1104 | } | |
1105 | } | |
718e3744 | 1106 | |
d62a17ae | 1107 | /* RIP routing information. */ |
1108 | static void ripng_response_process(struct ripng_packet *packet, int size, | |
1109 | struct sockaddr_in6 *from, | |
1110 | struct interface *ifp, int hoplimit) | |
1111 | { | |
5c84b9a5 RW |
1112 | struct ripng_interface *ri = ifp->info; |
1113 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 1114 | caddr_t lim; |
1115 | struct rte *rte; | |
1116 | struct ripng_nexthop nexthop; | |
1117 | ||
1118 | /* RFC2080 2.4.2 Response Messages: | |
1119 | The Response must be ignored if it is not from the RIPng port. */ | |
1120 | if (ntohs(from->sin6_port) != RIPNG_PORT_DEFAULT) { | |
1121 | zlog_warn("RIPng packet comes from non RIPng port %d from %s", | |
1122 | ntohs(from->sin6_port), inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1123 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1124 | return; |
1125 | } | |
718e3744 | 1126 | |
d62a17ae | 1127 | /* The datagram's IPv6 source address should be checked to see |
1128 | whether the datagram is from a valid neighbor; the source of the | |
1129 | datagram must be a link-local address. */ | |
1130 | if (!IN6_IS_ADDR_LINKLOCAL(&from->sin6_addr)) { | |
1131 | zlog_warn("RIPng packet comes from non link local address %s", | |
1132 | inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1133 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1134 | return; |
1135 | } | |
a94434b6 | 1136 | |
d62a17ae | 1137 | /* It is also worth checking to see whether the response is from one |
1138 | of the router's own addresses. Interfaces on broadcast networks | |
1139 | may receive copies of their own multicasts immediately. If a | |
1140 | router processes its own output as new input, confusion is likely, | |
1141 | and such datagrams must be ignored. */ | |
1142 | if (ripng_lladdr_check(ifp, &from->sin6_addr)) { | |
1143 | zlog_warn( | |
1144 | "RIPng packet comes from my own link local address %s", | |
1145 | inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1146 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1147 | return; |
1148 | } | |
a94434b6 | 1149 | |
d62a17ae | 1150 | /* As an additional check, periodic advertisements must have their |
1151 | hop counts set to 255, and inbound, multicast packets sent from the | |
1152 | RIPng port (i.e. periodic advertisement or triggered update | |
1153 | packets) must be examined to ensure that the hop count is 255. */ | |
1154 | if (hoplimit >= 0 && hoplimit != 255) { | |
1155 | zlog_warn( | |
1156 | "RIPng packet comes with non 255 hop count %d from %s", | |
1157 | hoplimit, inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1158 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1159 | return; |
1160 | } | |
718e3744 | 1161 | |
d62a17ae | 1162 | /* Update RIPng peer. */ |
5c84b9a5 | 1163 | ripng_peer_update(ripng, from, packet->version); |
a94434b6 | 1164 | |
d62a17ae | 1165 | /* Reset nexthop. */ |
1166 | memset(&nexthop, 0, sizeof(struct ripng_nexthop)); | |
1167 | nexthop.flag = RIPNG_NEXTHOP_UNSPEC; | |
718e3744 | 1168 | |
d62a17ae | 1169 | /* Set RTE pointer. */ |
1170 | rte = packet->rte; | |
718e3744 | 1171 | |
d62a17ae | 1172 | for (lim = ((caddr_t)packet) + size; (caddr_t)rte < lim; rte++) { |
1173 | /* First of all, we have to check this RTE is next hop RTE or | |
1174 | not. Next hop RTE is completely different with normal RTE so | |
1175 | we need special treatment. */ | |
1176 | if (rte->metric == RIPNG_METRIC_NEXTHOP) { | |
1177 | ripng_nexthop_rte(rte, from, &nexthop); | |
1178 | continue; | |
1179 | } | |
718e3744 | 1180 | |
d62a17ae | 1181 | /* RTE information validation. */ |
1182 | ||
1183 | /* - is the destination prefix valid (e.g., not a multicast | |
1184 | prefix and not a link-local address) A link-local address | |
1185 | should never be present in an RTE. */ | |
1186 | if (IN6_IS_ADDR_MULTICAST(&rte->addr)) { | |
1187 | zlog_warn( | |
1188 | "Destination prefix is a multicast address %s/%d [%d]", | |
1189 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1190 | rte->metric); | |
5c84b9a5 | 1191 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1192 | continue; |
1193 | } | |
1194 | if (IN6_IS_ADDR_LINKLOCAL(&rte->addr)) { | |
1195 | zlog_warn( | |
1196 | "Destination prefix is a link-local address %s/%d [%d]", | |
1197 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1198 | rte->metric); | |
5c84b9a5 | 1199 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1200 | continue; |
1201 | } | |
1202 | if (IN6_IS_ADDR_LOOPBACK(&rte->addr)) { | |
1203 | zlog_warn( | |
1204 | "Destination prefix is a loopback address %s/%d [%d]", | |
1205 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1206 | rte->metric); | |
5c84b9a5 | 1207 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1208 | continue; |
1209 | } | |
718e3744 | 1210 | |
d62a17ae | 1211 | /* - is the prefix length valid (i.e., between 0 and 128, |
1212 | inclusive) */ | |
1213 | if (rte->prefixlen > 128) { | |
1214 | zlog_warn("Invalid prefix length %s/%d from %s%%%s", | |
1215 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1216 | inet6_ntoa(from->sin6_addr), ifp->name); | |
5c84b9a5 | 1217 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1218 | continue; |
1219 | } | |
718e3744 | 1220 | |
d62a17ae | 1221 | /* - is the metric valid (i.e., between 1 and 16, inclusive) */ |
1222 | if (!(rte->metric >= 1 && rte->metric <= 16)) { | |
1223 | zlog_warn("Invalid metric %d from %s%%%s", rte->metric, | |
1224 | inet6_ntoa(from->sin6_addr), ifp->name); | |
5c84b9a5 | 1225 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1226 | continue; |
1227 | } | |
718e3744 | 1228 | |
d62a17ae | 1229 | /* Vincent: XXX Should we compute the direclty reachable nexthop |
1230 | * for our RIPng network ? | |
1231 | **/ | |
718e3744 | 1232 | |
d62a17ae | 1233 | /* Routing table updates. */ |
1234 | ripng_route_process(rte, from, &nexthop, ifp); | |
1235 | } | |
718e3744 | 1236 | } |
1237 | ||
1238 | /* Response to request message. */ | |
d62a17ae | 1239 | static void ripng_request_process(struct ripng_packet *packet, int size, |
1240 | struct sockaddr_in6 *from, | |
1241 | struct interface *ifp) | |
1242 | { | |
5c84b9a5 | 1243 | struct ripng *ripng; |
d62a17ae | 1244 | caddr_t lim; |
1245 | struct rte *rte; | |
1246 | struct prefix_ipv6 p; | |
fe08ba7e | 1247 | struct agg_node *rp; |
d62a17ae | 1248 | struct ripng_info *rinfo; |
1249 | struct ripng_interface *ri; | |
1250 | ||
1251 | /* Does not reponse to the requests on the loopback interfaces */ | |
1252 | if (if_is_loopback(ifp)) | |
1253 | return; | |
1254 | ||
1255 | /* Check RIPng process is enabled on this interface. */ | |
1256 | ri = ifp->info; | |
1257 | if (!ri->running) | |
1258 | return; | |
5c84b9a5 | 1259 | ripng = ri->ripng; |
d62a17ae | 1260 | |
1261 | /* When passive interface is specified, suppress responses */ | |
1262 | if (ri->passive) | |
1263 | return; | |
1264 | ||
1265 | /* RIPng peer update. */ | |
5c84b9a5 | 1266 | ripng_peer_update(ripng, from, packet->version); |
d62a17ae | 1267 | |
1268 | lim = ((caddr_t)packet) + size; | |
1269 | rte = packet->rte; | |
1270 | ||
1271 | /* The Request is processed entry by entry. If there are no | |
1272 | entries, no response is given. */ | |
1273 | if (lim == (caddr_t)rte) | |
1274 | return; | |
1275 | ||
1276 | /* There is one special case. If there is exactly one entry in the | |
1277 | request, and it has a destination prefix of zero, a prefix length | |
1278 | of zero, and a metric of infinity (i.e., 16), then this is a | |
1279 | request to send the entire routing table. In that case, a call | |
1280 | is made to the output process to send the routing table to the | |
1281 | requesting address/port. */ | |
1282 | if (lim == ((caddr_t)(rte + 1)) && IN6_IS_ADDR_UNSPECIFIED(&rte->addr) | |
1283 | && rte->prefixlen == 0 && rte->metric == RIPNG_METRIC_INFINITY) { | |
1284 | /* All route with split horizon */ | |
1285 | ripng_output_process(ifp, from, ripng_all_route); | |
1286 | } else { | |
1287 | /* Except for this special case, processing is quite simple. | |
1288 | Examine the list of RTEs in the Request one by one. For each | |
1289 | entry, look up the destination in the router's routing | |
1290 | database and, if there is a route, put that route's metric in | |
1291 | the metric field of the RTE. If there is no explicit route | |
1292 | to the specified destination, put infinity in the metric | |
1293 | field. Once all the entries have been filled in, change the | |
1294 | command from Request to Response and send the datagram back | |
1295 | to the requestor. */ | |
1296 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
1297 | p.family = AF_INET6; | |
1298 | ||
1299 | for (; ((caddr_t)rte) < lim; rte++) { | |
1300 | p.prefix = rte->addr; | |
1301 | p.prefixlen = rte->prefixlen; | |
1302 | apply_mask_ipv6(&p); | |
1303 | ||
fe08ba7e | 1304 | rp = agg_node_lookup(ripng->table, (struct prefix *)&p); |
d62a17ae | 1305 | |
1306 | if (rp) { | |
1307 | rinfo = listgetdata( | |
1308 | listhead((struct list *)rp->info)); | |
1309 | rte->metric = rinfo->metric; | |
fe08ba7e | 1310 | agg_unlock_node(rp); |
d62a17ae | 1311 | } else |
1312 | rte->metric = RIPNG_METRIC_INFINITY; | |
1313 | } | |
1314 | packet->command = RIPNG_RESPONSE; | |
1315 | ||
1316 | ripng_send_packet((caddr_t)packet, size, from, ifp); | |
1317 | } | |
718e3744 | 1318 | } |
1319 | ||
1320 | /* First entry point of reading RIPng packet. */ | |
d62a17ae | 1321 | static int ripng_read(struct thread *thread) |
1322 | { | |
5c84b9a5 | 1323 | struct ripng *ripng = THREAD_ARG(thread); |
d62a17ae | 1324 | int len; |
1325 | int sock; | |
1326 | struct sockaddr_in6 from; | |
1327 | struct ripng_packet *packet; | |
1328 | ifindex_t ifindex = 0; | |
1329 | struct interface *ifp; | |
1330 | int hoplimit = -1; | |
1331 | ||
1332 | /* Check ripng is active and alive. */ | |
1333 | assert(ripng != NULL); | |
1334 | assert(ripng->sock >= 0); | |
1335 | ||
1336 | /* Fetch thread data and set read pointer to empty for event | |
1337 | managing. `sock' sould be same as ripng->sock. */ | |
1338 | sock = THREAD_FD(thread); | |
1339 | ripng->t_read = NULL; | |
1340 | ||
1341 | /* Add myself to the next event. */ | |
5c84b9a5 | 1342 | ripng_event(ripng, RIPNG_READ, sock); |
d62a17ae | 1343 | |
1344 | /* Read RIPng packet. */ | |
1345 | len = ripng_recv_packet(sock, STREAM_DATA(ripng->ibuf), | |
1346 | STREAM_SIZE(ripng->ibuf), &from, &ifindex, | |
1347 | &hoplimit); | |
1348 | if (len < 0) { | |
dde7b15b RW |
1349 | zlog_warn("RIPng recvfrom failed (VRF %s): %s.", |
1350 | ripng->vrf_name, safe_strerror(errno)); | |
d62a17ae | 1351 | return len; |
1352 | } | |
718e3744 | 1353 | |
d62a17ae | 1354 | /* Check RTE boundary. RTE size (Packet length - RIPng header size |
1355 | (4)) must be multiple size of one RTE size (20). */ | |
1356 | if (((len - 4) % 20) != 0) { | |
dde7b15b RW |
1357 | zlog_warn("RIPng invalid packet size %d from %s (VRF %s)", len, |
1358 | inet6_ntoa(from.sin6_addr), ripng->vrf_name); | |
5c84b9a5 | 1359 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1360 | return 0; |
1361 | } | |
718e3744 | 1362 | |
d62a17ae | 1363 | packet = (struct ripng_packet *)STREAM_DATA(ripng->ibuf); |
dde7b15b | 1364 | ifp = if_lookup_by_index(ifindex, ripng->vrf->vrf_id); |
718e3744 | 1365 | |
d62a17ae | 1366 | /* RIPng packet received. */ |
1367 | if (IS_RIPNG_DEBUG_EVENT) | |
dde7b15b RW |
1368 | zlog_debug( |
1369 | "RIPng packet received from %s port %d on %s (VRF %s)", | |
1370 | inet6_ntoa(from.sin6_addr), ntohs(from.sin6_port), | |
1371 | ifp ? ifp->name : "unknown", ripng->vrf_name); | |
718e3744 | 1372 | |
d62a17ae | 1373 | /* Logging before packet checking. */ |
1374 | if (IS_RIPNG_DEBUG_RECV) | |
1375 | ripng_packet_dump(packet, len, "RECV"); | |
718e3744 | 1376 | |
d62a17ae | 1377 | /* Packet comes from unknown interface. */ |
1378 | if (ifp == NULL) { | |
dde7b15b RW |
1379 | zlog_warn( |
1380 | "RIPng packet comes from unknown interface %d (VRF %s)", | |
1381 | ifindex, ripng->vrf_name); | |
d62a17ae | 1382 | return 0; |
1383 | } | |
718e3744 | 1384 | |
d62a17ae | 1385 | /* Packet version mismatch checking. */ |
1386 | if (packet->version != ripng->version) { | |
1387 | zlog_warn( | |
dde7b15b RW |
1388 | "RIPng packet version %d doesn't fit to my version %d (VRF %s)", |
1389 | packet->version, ripng->version, ripng->vrf_name); | |
5c84b9a5 | 1390 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1391 | return 0; |
1392 | } | |
718e3744 | 1393 | |
d62a17ae | 1394 | /* Process RIPng packet. */ |
1395 | switch (packet->command) { | |
1396 | case RIPNG_REQUEST: | |
1397 | ripng_request_process(packet, len, &from, ifp); | |
1398 | break; | |
1399 | case RIPNG_RESPONSE: | |
1400 | ripng_response_process(packet, len, &from, ifp, hoplimit); | |
1401 | break; | |
1402 | default: | |
dde7b15b RW |
1403 | zlog_warn("Invalid RIPng command %d (VRF %s)", packet->command, |
1404 | ripng->vrf_name); | |
5c84b9a5 | 1405 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1406 | break; |
1407 | } | |
1408 | return 0; | |
718e3744 | 1409 | } |
1410 | ||
1411 | /* Walk down the RIPng routing table then clear changed flag. */ | |
5c84b9a5 | 1412 | static void ripng_clear_changed_flag(struct ripng *ripng) |
718e3744 | 1413 | { |
fe08ba7e | 1414 | struct agg_node *rp; |
d62a17ae | 1415 | struct ripng_info *rinfo = NULL; |
1416 | struct list *list = NULL; | |
1417 | struct listnode *listnode = NULL; | |
718e3744 | 1418 | |
fe08ba7e | 1419 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 1420 | if ((list = rp->info) != NULL) |
1421 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
1422 | UNSET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
1423 | /* This flag can be set only on the first entry. | |
1424 | */ | |
1425 | break; | |
1426 | } | |
718e3744 | 1427 | } |
1428 | ||
1429 | /* Regular update of RIPng route. Send all routing formation to RIPng | |
1430 | enabled interface. */ | |
d62a17ae | 1431 | static int ripng_update(struct thread *t) |
718e3744 | 1432 | { |
5c84b9a5 | 1433 | struct ripng *ripng = THREAD_ARG(t); |
d62a17ae | 1434 | struct interface *ifp; |
1435 | struct ripng_interface *ri; | |
718e3744 | 1436 | |
d62a17ae | 1437 | /* Clear update timer thread. */ |
1438 | ripng->t_update = NULL; | |
718e3744 | 1439 | |
d62a17ae | 1440 | /* Logging update event. */ |
1441 | if (IS_RIPNG_DEBUG_EVENT) | |
1442 | zlog_debug("RIPng update timer expired!"); | |
718e3744 | 1443 | |
d62a17ae | 1444 | /* Supply routes to each interface. */ |
dde7b15b | 1445 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 1446 | ri = ifp->info; |
718e3744 | 1447 | |
d62a17ae | 1448 | if (if_is_loopback(ifp) || !if_is_up(ifp)) |
1449 | continue; | |
718e3744 | 1450 | |
d62a17ae | 1451 | if (!ri->running) |
1452 | continue; | |
718e3744 | 1453 | |
d62a17ae | 1454 | /* When passive interface is specified, suppress announce to the |
1455 | interface. */ | |
1456 | if (ri->passive) | |
1457 | continue; | |
718e3744 | 1458 | |
1e20238a | 1459 | #ifdef RIPNG_ADVANCED |
d62a17ae | 1460 | if (ri->ri_send == RIPNG_SEND_OFF) { |
1461 | if (IS_RIPNG_DEBUG_EVENT) | |
1462 | zlog_debug( | |
1463 | "[Event] RIPng send to if %d is suppressed by config", | |
1464 | ifp->ifindex); | |
1465 | continue; | |
1466 | } | |
718e3744 | 1467 | #endif /* RIPNG_ADVANCED */ |
1468 | ||
d62a17ae | 1469 | ripng_output_process(ifp, NULL, ripng_all_route); |
1470 | } | |
718e3744 | 1471 | |
d62a17ae | 1472 | /* Triggered updates may be suppressed if a regular update is due by |
1473 | the time the triggered update would be sent. */ | |
1474 | if (ripng->t_triggered_interval) { | |
1475 | thread_cancel(ripng->t_triggered_interval); | |
1476 | ripng->t_triggered_interval = NULL; | |
1477 | } | |
1478 | ripng->trigger = 0; | |
718e3744 | 1479 | |
d62a17ae | 1480 | /* Reset flush event. */ |
5c84b9a5 | 1481 | ripng_event(ripng, RIPNG_UPDATE_EVENT, 0); |
718e3744 | 1482 | |
d62a17ae | 1483 | return 0; |
718e3744 | 1484 | } |
1485 | ||
1486 | /* Triggered update interval timer. */ | |
d62a17ae | 1487 | static int ripng_triggered_interval(struct thread *t) |
718e3744 | 1488 | { |
5c84b9a5 RW |
1489 | struct ripng *ripng = THREAD_ARG(t); |
1490 | ||
d62a17ae | 1491 | ripng->t_triggered_interval = NULL; |
718e3744 | 1492 | |
d62a17ae | 1493 | if (ripng->trigger) { |
1494 | ripng->trigger = 0; | |
1495 | ripng_triggered_update(t); | |
1496 | } | |
1497 | return 0; | |
1498 | } | |
718e3744 | 1499 | |
1500 | /* Execute triggered update. */ | |
d62a17ae | 1501 | int ripng_triggered_update(struct thread *t) |
718e3744 | 1502 | { |
5c84b9a5 | 1503 | struct ripng *ripng = THREAD_ARG(t); |
d62a17ae | 1504 | struct interface *ifp; |
1505 | struct ripng_interface *ri; | |
1506 | int interval; | |
718e3744 | 1507 | |
d62a17ae | 1508 | ripng->t_triggered_update = NULL; |
718e3744 | 1509 | |
d62a17ae | 1510 | /* Cancel interval timer. */ |
1511 | if (ripng->t_triggered_interval) { | |
1512 | thread_cancel(ripng->t_triggered_interval); | |
1513 | ripng->t_triggered_interval = NULL; | |
1514 | } | |
1515 | ripng->trigger = 0; | |
718e3744 | 1516 | |
d62a17ae | 1517 | /* Logging triggered update. */ |
1518 | if (IS_RIPNG_DEBUG_EVENT) | |
1519 | zlog_debug("RIPng triggered update!"); | |
718e3744 | 1520 | |
d62a17ae | 1521 | /* Split Horizon processing is done when generating triggered |
1522 | updates as well as normal updates (see section 2.6). */ | |
dde7b15b | 1523 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 1524 | ri = ifp->info; |
718e3744 | 1525 | |
d62a17ae | 1526 | if (if_is_loopback(ifp) || !if_is_up(ifp)) |
1527 | continue; | |
718e3744 | 1528 | |
d62a17ae | 1529 | if (!ri->running) |
1530 | continue; | |
718e3744 | 1531 | |
d62a17ae | 1532 | /* When passive interface is specified, suppress announce to the |
1533 | interface. */ | |
1534 | if (ri->passive) | |
1535 | continue; | |
718e3744 | 1536 | |
d62a17ae | 1537 | ripng_output_process(ifp, NULL, ripng_changed_route); |
1538 | } | |
718e3744 | 1539 | |
d62a17ae | 1540 | /* Once all of the triggered updates have been generated, the route |
1541 | change flags should be cleared. */ | |
5c84b9a5 | 1542 | ripng_clear_changed_flag(ripng); |
718e3744 | 1543 | |
d62a17ae | 1544 | /* After a triggered update is sent, a timer should be set for a |
1545 | random interval between 1 and 5 seconds. If other changes that | |
1546 | would trigger updates occur before the timer expires, a single | |
1547 | update is triggered when the timer expires. */ | |
1548 | interval = (random() % 5) + 1; | |
718e3744 | 1549 | |
d62a17ae | 1550 | ripng->t_triggered_interval = NULL; |
5c84b9a5 | 1551 | thread_add_timer(master, ripng_triggered_interval, ripng, interval, |
d62a17ae | 1552 | &ripng->t_triggered_interval); |
718e3744 | 1553 | |
d62a17ae | 1554 | return 0; |
718e3744 | 1555 | } |
1556 | ||
1557 | /* Write routing table entry to the stream and return next index of | |
1558 | the routing table entry in the stream. */ | |
d62a17ae | 1559 | int ripng_write_rte(int num, struct stream *s, struct prefix_ipv6 *p, |
d7c0a89a | 1560 | struct in6_addr *nexthop, uint16_t tag, uint8_t metric) |
d62a17ae | 1561 | { |
1562 | /* RIPng packet header. */ | |
1563 | if (num == 0) { | |
1564 | stream_putc(s, RIPNG_RESPONSE); | |
1565 | stream_putc(s, RIPNG_V1); | |
1566 | stream_putw(s, 0); | |
1567 | } | |
718e3744 | 1568 | |
d62a17ae | 1569 | /* Write routing table entry. */ |
b575a12c A |
1570 | if (!nexthop) { |
1571 | assert(p); | |
d7c0a89a | 1572 | stream_write(s, (uint8_t *)&p->prefix, sizeof(struct in6_addr)); |
b575a12c | 1573 | } else |
d7c0a89a | 1574 | stream_write(s, (uint8_t *)nexthop, sizeof(struct in6_addr)); |
d62a17ae | 1575 | stream_putw(s, tag); |
1576 | if (p) | |
1577 | stream_putc(s, p->prefixlen); | |
1578 | else | |
1579 | stream_putc(s, 0); | |
1580 | stream_putc(s, metric); | |
718e3744 | 1581 | |
d62a17ae | 1582 | return ++num; |
718e3744 | 1583 | } |
1584 | ||
1585 | /* Send RESPONSE message to specified destination. */ | |
d62a17ae | 1586 | void ripng_output_process(struct interface *ifp, struct sockaddr_in6 *to, |
1587 | int route_type) | |
1588 | { | |
5c84b9a5 | 1589 | struct ripng *ripng; |
d62a17ae | 1590 | int ret; |
fe08ba7e | 1591 | struct agg_node *rp; |
d62a17ae | 1592 | struct ripng_info *rinfo; |
1593 | struct ripng_interface *ri; | |
1594 | struct ripng_aggregate *aggregate; | |
1595 | struct prefix_ipv6 *p; | |
1596 | struct list *ripng_rte_list; | |
1597 | struct list *list = NULL; | |
1598 | struct listnode *listnode = NULL; | |
1599 | ||
1600 | if (IS_RIPNG_DEBUG_EVENT) { | |
1601 | if (to) | |
1602 | zlog_debug("RIPng update routes to neighbor %s", | |
1603 | inet6_ntoa(to->sin6_addr)); | |
1604 | else | |
1605 | zlog_debug("RIPng update routes on interface %s", | |
1606 | ifp->name); | |
1607 | } | |
a94434b6 | 1608 | |
5c84b9a5 | 1609 | /* Get RIPng interface and instance. */ |
d62a17ae | 1610 | ri = ifp->info; |
5c84b9a5 | 1611 | ripng = ri->ripng; |
d62a17ae | 1612 | |
1613 | ripng_rte_list = ripng_rte_new(); | |
1614 | ||
fe08ba7e | 1615 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { |
d62a17ae | 1616 | if ((list = rp->info) != NULL |
1617 | && (rinfo = listgetdata(listhead(list))) != NULL | |
1618 | && rinfo->suppress == 0) { | |
1619 | /* If no route-map are applied, the RTE will be these | |
1620 | * following | |
0437e105 | 1621 | * information. |
d62a17ae | 1622 | */ |
26a3ffd6 | 1623 | p = (struct prefix_ipv6 *)agg_node_get_prefix(rp); |
d62a17ae | 1624 | rinfo->metric_out = rinfo->metric; |
1625 | rinfo->tag_out = rinfo->tag; | |
1626 | memset(&rinfo->nexthop_out, 0, | |
1627 | sizeof(rinfo->nexthop_out)); | |
1628 | /* In order to avoid some local loops, | |
1629 | * if the RIPng route has a nexthop via this interface, | |
1630 | * keep the nexthop, | |
1631 | * otherwise set it to 0. The nexthop should not be | |
1632 | * propagated | |
1633 | * beyond the local broadcast/multicast area in order | |
1634 | * to avoid an IGP multi-level recursive look-up. | |
1635 | */ | |
1636 | if (rinfo->ifindex == ifp->ifindex) | |
1637 | rinfo->nexthop_out = rinfo->nexthop; | |
1638 | ||
1639 | /* Apply output filters. */ | |
1640 | ret = ripng_filter(RIPNG_FILTER_OUT, p, ri); | |
1641 | if (ret < 0) | |
1642 | continue; | |
1643 | ||
1644 | /* Changed route only output. */ | |
1645 | if (route_type == ripng_changed_route | |
1646 | && (!(rinfo->flags & RIPNG_RTF_CHANGED))) | |
1647 | continue; | |
1648 | ||
1649 | /* Split horizon. */ | |
1650 | if (ri->split_horizon == RIPNG_SPLIT_HORIZON) { | |
1651 | /* We perform split horizon for RIPng routes. */ | |
1652 | int suppress = 0; | |
1653 | struct ripng_info *tmp_rinfo = NULL; | |
1654 | ||
1655 | for (ALL_LIST_ELEMENTS_RO(list, listnode, | |
1656 | tmp_rinfo)) | |
1657 | if (tmp_rinfo->type == ZEBRA_ROUTE_RIPNG | |
1658 | && tmp_rinfo->ifindex | |
1659 | == ifp->ifindex) { | |
1660 | suppress = 1; | |
1661 | break; | |
1662 | } | |
1663 | if (suppress) | |
1664 | continue; | |
1665 | } | |
1666 | ||
1667 | /* Preparation for route-map. */ | |
1668 | rinfo->metric_set = 0; | |
1669 | /* nexthop_out, | |
1670 | * metric_out | |
1671 | * and tag_out are already initialized. | |
1672 | */ | |
1673 | ||
1674 | /* Interface route-map */ | |
1675 | if (ri->routemap[RIPNG_FILTER_OUT]) { | |
d62a17ae | 1676 | ret = route_map_apply( |
1677 | ri->routemap[RIPNG_FILTER_OUT], | |
1678 | (struct prefix *)p, RMAP_RIPNG, rinfo); | |
1679 | ||
1680 | if (ret == RMAP_DENYMATCH) { | |
1681 | if (IS_RIPNG_DEBUG_PACKET) | |
1682 | zlog_debug( | |
1683 | "RIPng %s/%d is filtered by route-map out", | |
1684 | inet6_ntoa(p->prefix), | |
1685 | p->prefixlen); | |
1686 | continue; | |
1687 | } | |
1688 | } | |
1689 | ||
1690 | /* Redistribute route-map. */ | |
f9120f71 RW |
1691 | if (ripng->redist[rinfo->type].route_map.name) { |
1692 | ret = route_map_apply(ripng->redist[rinfo->type] | |
1693 | .route_map.map, | |
1694 | (struct prefix *)p, | |
1695 | RMAP_RIPNG, rinfo); | |
d62a17ae | 1696 | |
1697 | if (ret == RMAP_DENYMATCH) { | |
1698 | if (IS_RIPNG_DEBUG_PACKET) | |
1699 | zlog_debug( | |
1700 | "RIPng %s/%d is filtered by route-map", | |
1701 | inet6_ntoa(p->prefix), | |
1702 | p->prefixlen); | |
1703 | continue; | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | /* When the route-map does not set metric. */ | |
1708 | if (!rinfo->metric_set) { | |
1709 | /* If the redistribute metric is set. */ | |
f9120f71 | 1710 | if (ripng->redist[rinfo->type].metric_config |
d62a17ae | 1711 | && rinfo->metric != RIPNG_METRIC_INFINITY) { |
1712 | rinfo->metric_out = | |
f9120f71 | 1713 | ripng->redist[rinfo->type] |
d62a17ae | 1714 | .metric; |
1715 | } else { | |
1716 | /* If the route is not connected or | |
1717 | localy generated | |
1718 | one, use default-metric value */ | |
1719 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
1720 | && rinfo->type | |
1721 | != ZEBRA_ROUTE_CONNECT | |
1722 | && rinfo->metric | |
1723 | != RIPNG_METRIC_INFINITY) | |
1724 | rinfo->metric_out = | |
1725 | ripng->default_metric; | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | /* Apply offset-list */ | |
1730 | if (rinfo->metric_out != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 1731 | ripng_offset_list_apply_out(ripng, p, ifp, |
d62a17ae | 1732 | &rinfo->metric_out); |
1733 | ||
1734 | if (rinfo->metric_out > RIPNG_METRIC_INFINITY) | |
1735 | rinfo->metric_out = RIPNG_METRIC_INFINITY; | |
1736 | ||
1737 | /* Perform split-horizon with poisoned reverse | |
1738 | * for RIPng routes. | |
1739 | **/ | |
1740 | if (ri->split_horizon | |
1741 | == RIPNG_SPLIT_HORIZON_POISONED_REVERSE) { | |
1742 | struct ripng_info *tmp_rinfo = NULL; | |
1743 | ||
1744 | for (ALL_LIST_ELEMENTS_RO(list, listnode, | |
1745 | tmp_rinfo)) | |
1746 | if ((tmp_rinfo->type | |
1747 | == ZEBRA_ROUTE_RIPNG) | |
1748 | && tmp_rinfo->ifindex | |
1749 | == ifp->ifindex) | |
1750 | rinfo->metric_out = | |
1751 | RIPNG_METRIC_INFINITY; | |
1752 | } | |
1753 | ||
1754 | /* Add RTE to the list */ | |
1755 | ripng_rte_add(ripng_rte_list, p, rinfo, NULL); | |
718e3744 | 1756 | } |
a94434b6 | 1757 | |
d62a17ae | 1758 | /* Process the aggregated RTE entry */ |
1759 | if ((aggregate = rp->aggregate) != NULL && aggregate->count > 0 | |
1760 | && aggregate->suppress == 0) { | |
1761 | /* If no route-map are applied, the RTE will be these | |
1762 | * following | |
0437e105 | 1763 | * information. |
d62a17ae | 1764 | */ |
26a3ffd6 | 1765 | p = (struct prefix_ipv6 *)agg_node_get_prefix(rp); |
d62a17ae | 1766 | aggregate->metric_set = 0; |
1767 | aggregate->metric_out = aggregate->metric; | |
1768 | aggregate->tag_out = aggregate->tag; | |
1769 | memset(&aggregate->nexthop_out, 0, | |
1770 | sizeof(aggregate->nexthop_out)); | |
1771 | ||
1772 | /* Apply output filters.*/ | |
1773 | ret = ripng_filter(RIPNG_FILTER_OUT, p, ri); | |
1774 | if (ret < 0) | |
1775 | continue; | |
1776 | ||
1777 | /* Interface route-map */ | |
1778 | if (ri->routemap[RIPNG_FILTER_OUT]) { | |
d62a17ae | 1779 | struct ripng_info newinfo; |
1780 | ||
1781 | /* let's cast the aggregate structure to | |
1782 | * ripng_info */ | |
1783 | memset(&newinfo, 0, sizeof(struct ripng_info)); | |
1784 | /* the nexthop is :: */ | |
1785 | newinfo.metric = aggregate->metric; | |
1786 | newinfo.metric_out = aggregate->metric_out; | |
1787 | newinfo.tag = aggregate->tag; | |
1788 | newinfo.tag_out = aggregate->tag_out; | |
1789 | ||
1790 | ret = route_map_apply( | |
1791 | ri->routemap[RIPNG_FILTER_OUT], | |
1792 | (struct prefix *)p, RMAP_RIPNG, | |
1793 | &newinfo); | |
1794 | ||
1795 | if (ret == RMAP_DENYMATCH) { | |
1796 | if (IS_RIPNG_DEBUG_PACKET) | |
1797 | zlog_debug( | |
1798 | "RIPng %s/%d is filtered by route-map out", | |
1799 | inet6_ntoa(p->prefix), | |
1800 | p->prefixlen); | |
1801 | continue; | |
1802 | } | |
1803 | ||
1804 | aggregate->metric_out = newinfo.metric_out; | |
1805 | aggregate->tag_out = newinfo.tag_out; | |
1806 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop_out)) | |
1807 | aggregate->nexthop_out = | |
1808 | newinfo.nexthop_out; | |
1809 | } | |
1810 | ||
1811 | /* There is no redistribute routemap for the aggregated | |
1812 | * RTE */ | |
1813 | ||
1814 | /* Changed route only output. */ | |
1815 | /* XXX, vincent, in order to increase time convergence, | |
1816 | * it should be announced if a child has changed. | |
1817 | */ | |
1818 | if (route_type == ripng_changed_route) | |
1819 | continue; | |
1820 | ||
1821 | /* Apply offset-list */ | |
1822 | if (aggregate->metric_out != RIPNG_METRIC_INFINITY) | |
1823 | ripng_offset_list_apply_out( | |
5c84b9a5 | 1824 | ripng, p, ifp, &aggregate->metric_out); |
d62a17ae | 1825 | |
1826 | if (aggregate->metric_out > RIPNG_METRIC_INFINITY) | |
1827 | aggregate->metric_out = RIPNG_METRIC_INFINITY; | |
1828 | ||
1829 | /* Add RTE to the list */ | |
1830 | ripng_rte_add(ripng_rte_list, p, NULL, aggregate); | |
1831 | } | |
718e3744 | 1832 | } |
1833 | ||
d62a17ae | 1834 | /* Flush the list */ |
1835 | ripng_rte_send(ripng_rte_list, ifp, to); | |
1836 | ripng_rte_free(ripng_rte_list); | |
718e3744 | 1837 | } |
1838 | ||
5c84b9a5 RW |
1839 | struct ripng *ripng_lookup_by_vrf_id(vrf_id_t vrf_id) |
1840 | { | |
1841 | struct vrf *vrf; | |
1842 | ||
1843 | vrf = vrf_lookup_by_id(vrf_id); | |
1844 | if (!vrf) | |
1845 | return NULL; | |
1846 | ||
1847 | return vrf->info; | |
1848 | } | |
1849 | ||
dde7b15b RW |
1850 | struct ripng *ripng_lookup_by_vrf_name(const char *vrf_name) |
1851 | { | |
1852 | struct ripng ripng; | |
1853 | ||
1854 | ripng.vrf_name = (char *)vrf_name; | |
1855 | ||
1856 | return RB_FIND(ripng_instance_head, &ripng_instances, &ripng); | |
1857 | } | |
1858 | ||
718e3744 | 1859 | /* Create new RIPng instance and set it to global variable. */ |
dde7b15b | 1860 | struct ripng *ripng_create(const char *vrf_name, struct vrf *vrf, int socket) |
718e3744 | 1861 | { |
5c84b9a5 | 1862 | struct ripng *ripng; |
718e3744 | 1863 | |
d62a17ae | 1864 | /* Allocaste RIPng instance. */ |
1865 | ripng = XCALLOC(MTYPE_RIPNG, sizeof(struct ripng)); | |
dde7b15b | 1866 | ripng->vrf_name = XSTRDUP(MTYPE_RIPNG_VRF_NAME, vrf_name); |
718e3744 | 1867 | |
d62a17ae | 1868 | /* Default version and timer values. */ |
1869 | ripng->version = RIPNG_V1; | |
9a12e9e5 RW |
1870 | ripng->update_time = yang_get_default_uint32( |
1871 | "%s/timers/update-interval", RIPNG_INSTANCE); | |
1872 | ripng->timeout_time = yang_get_default_uint32( | |
1873 | "%s/timers/holddown-interval", RIPNG_INSTANCE); | |
1874 | ripng->garbage_time = yang_get_default_uint32( | |
1875 | "%s/timers/flush-interval", RIPNG_INSTANCE); | |
1876 | ripng->default_metric = | |
1877 | yang_get_default_uint8("%s/default-metric", RIPNG_INSTANCE); | |
1878 | ripng->ecmp = yang_get_default_bool("%s/allow-ecmp", RIPNG_INSTANCE); | |
d62a17ae | 1879 | |
1880 | /* Make buffer. */ | |
1881 | ripng->ibuf = stream_new(RIPNG_MAX_PACKET_SIZE * 5); | |
1882 | ripng->obuf = stream_new(RIPNG_MAX_PACKET_SIZE); | |
1883 | ||
b0ba762f | 1884 | /* Initialize RIPng data structures. */ |
fe08ba7e | 1885 | ripng->table = agg_table_init(); |
5c84b9a5 | 1886 | agg_set_table_info(ripng->table, ripng); |
ecece94c RW |
1887 | ripng->peer_list = list_new(); |
1888 | ripng->peer_list->cmp = (int (*)(void *, void *))ripng_peer_list_cmp; | |
56bf1cb2 | 1889 | ripng->peer_list->del = ripng_peer_list_del; |
b0ba762f | 1890 | ripng->enable_if = vector_init(1); |
29b94d58 | 1891 | ripng->enable_network = agg_table_init(); |
0c32404f | 1892 | ripng->passive_interface = vector_init(1); |
26c6be93 RW |
1893 | ripng->offset_list_master = list_new(); |
1894 | ripng->offset_list_master->cmp = | |
1895 | (int (*)(void *, void *))offset_list_cmp; | |
1896 | ripng->offset_list_master->del = | |
6c4c3561 | 1897 | (void (*)(void *))ripng_offset_list_free; |
dde7b15b | 1898 | ripng->distribute_ctx = distribute_list_ctx_create(vrf); |
03a38493 PG |
1899 | distribute_list_add_hook(ripng->distribute_ctx, |
1900 | ripng_distribute_update); | |
1901 | distribute_list_delete_hook(ripng->distribute_ctx, | |
1902 | ripng_distribute_update); | |
718e3744 | 1903 | |
4b23867c | 1904 | /* if rmap install. */ |
8f88441d | 1905 | ripng->if_rmap_ctx = if_rmap_ctx_create(vrf_name); |
4b23867c PG |
1906 | if_rmap_hook_add(ripng->if_rmap_ctx, ripng_if_rmap_update); |
1907 | if_rmap_hook_delete(ripng->if_rmap_ctx, ripng_if_rmap_update); | |
5c84b9a5 | 1908 | |
dde7b15b RW |
1909 | /* Enable the routing instance if possible. */ |
1910 | if (vrf && vrf_is_enabled(vrf)) | |
1911 | ripng_instance_enable(ripng, vrf, socket); | |
1912 | else { | |
1913 | ripng->vrf = NULL; | |
1914 | ripng->sock = -1; | |
5c84b9a5 RW |
1915 | } |
1916 | ||
dde7b15b RW |
1917 | RB_INSERT(ripng_instance_head, &ripng_instances, ripng); |
1918 | ||
5c84b9a5 | 1919 | return ripng; |
718e3744 | 1920 | } |
1921 | ||
a94434b6 | 1922 | /* Send RIPng request to the interface. */ |
d62a17ae | 1923 | int ripng_request(struct interface *ifp) |
718e3744 | 1924 | { |
d62a17ae | 1925 | struct rte *rte; |
1926 | struct ripng_packet ripng_packet; | |
718e3744 | 1927 | |
d62a17ae | 1928 | /* In default ripd doesn't send RIP_REQUEST to the loopback interface. |
1929 | */ | |
1930 | if (if_is_loopback(ifp)) | |
1931 | return 0; | |
a94434b6 | 1932 | |
d62a17ae | 1933 | /* If interface is down, don't send RIP packet. */ |
1934 | if (!if_is_up(ifp)) | |
1935 | return 0; | |
a94434b6 | 1936 | |
d62a17ae | 1937 | if (IS_RIPNG_DEBUG_EVENT) |
1938 | zlog_debug("RIPng send request to %s", ifp->name); | |
718e3744 | 1939 | |
d62a17ae | 1940 | memset(&ripng_packet, 0, sizeof(ripng_packet)); |
1941 | ripng_packet.command = RIPNG_REQUEST; | |
1942 | ripng_packet.version = RIPNG_V1; | |
1943 | rte = ripng_packet.rte; | |
1944 | rte->metric = RIPNG_METRIC_INFINITY; | |
718e3744 | 1945 | |
d62a17ae | 1946 | return ripng_send_packet((caddr_t)&ripng_packet, sizeof(ripng_packet), |
1947 | NULL, ifp); | |
718e3744 | 1948 | } |
1949 | ||
6b0655a2 | 1950 | |
d62a17ae | 1951 | static int ripng_update_jitter(int time) |
718e3744 | 1952 | { |
d62a17ae | 1953 | return ((random() % (time + 1)) - (time / 2)); |
718e3744 | 1954 | } |
1955 | ||
5c84b9a5 | 1956 | void ripng_event(struct ripng *ripng, enum ripng_event event, int sock) |
718e3744 | 1957 | { |
d62a17ae | 1958 | int jitter = 0; |
718e3744 | 1959 | |
d62a17ae | 1960 | switch (event) { |
1961 | case RIPNG_READ: | |
5c84b9a5 RW |
1962 | thread_add_read(master, ripng_read, ripng, sock, |
1963 | &ripng->t_read); | |
d62a17ae | 1964 | break; |
1965 | case RIPNG_UPDATE_EVENT: | |
1966 | if (ripng->t_update) { | |
1967 | thread_cancel(ripng->t_update); | |
1968 | ripng->t_update = NULL; | |
1969 | } | |
1970 | /* Update timer jitter. */ | |
1971 | jitter = ripng_update_jitter(ripng->update_time); | |
1972 | ||
1973 | ripng->t_update = NULL; | |
5c84b9a5 | 1974 | thread_add_timer(master, ripng_update, ripng, |
d62a17ae | 1975 | sock ? 2 : ripng->update_time + jitter, |
1976 | &ripng->t_update); | |
1977 | break; | |
1978 | case RIPNG_TRIGGERED_UPDATE: | |
1979 | if (ripng->t_triggered_interval) | |
1980 | ripng->trigger = 1; | |
1981 | else | |
5c84b9a5 | 1982 | thread_add_event(master, ripng_triggered_update, ripng, |
d62a17ae | 1983 | 0, &ripng->t_triggered_update); |
1984 | break; | |
1985 | default: | |
1986 | break; | |
1987 | } | |
718e3744 | 1988 | } |
6b0655a2 | 1989 | |
718e3744 | 1990 | |
718e3744 | 1991 | /* Print out routes update time. */ |
d62a17ae | 1992 | static void ripng_vty_out_uptime(struct vty *vty, struct ripng_info *rinfo) |
718e3744 | 1993 | { |
d62a17ae | 1994 | time_t clock; |
a2700b50 | 1995 | struct tm tm; |
718e3744 | 1996 | #define TIME_BUF 25 |
d62a17ae | 1997 | char timebuf[TIME_BUF]; |
1998 | struct thread *thread; | |
1999 | ||
2000 | if ((thread = rinfo->t_timeout) != NULL) { | |
2001 | clock = thread_timer_remain_second(thread); | |
a2700b50 MS |
2002 | gmtime_r(&clock, &tm); |
2003 | strftime(timebuf, TIME_BUF, "%M:%S", &tm); | |
d62a17ae | 2004 | vty_out(vty, "%5s", timebuf); |
2005 | } else if ((thread = rinfo->t_garbage_collect) != NULL) { | |
2006 | clock = thread_timer_remain_second(thread); | |
a2700b50 MS |
2007 | gmtime_r(&clock, &tm); |
2008 | strftime(timebuf, TIME_BUF, "%M:%S", &tm); | |
d62a17ae | 2009 | vty_out(vty, "%5s", timebuf); |
2010 | } | |
718e3744 | 2011 | } |
2012 | ||
d62a17ae | 2013 | static char *ripng_route_subtype_print(struct ripng_info *rinfo) |
2014 | { | |
2015 | static char str[3]; | |
2016 | memset(str, 0, 3); | |
2017 | ||
2018 | if (rinfo->suppress) | |
9736ba9e | 2019 | strlcat(str, "S", sizeof(str)); |
d62a17ae | 2020 | |
2021 | switch (rinfo->sub_type) { | |
2022 | case RIPNG_ROUTE_RTE: | |
9736ba9e | 2023 | strlcat(str, "n", sizeof(str)); |
d62a17ae | 2024 | break; |
2025 | case RIPNG_ROUTE_STATIC: | |
9736ba9e | 2026 | strlcat(str, "s", sizeof(str)); |
d62a17ae | 2027 | break; |
2028 | case RIPNG_ROUTE_DEFAULT: | |
9736ba9e | 2029 | strlcat(str, "d", sizeof(str)); |
d62a17ae | 2030 | break; |
2031 | case RIPNG_ROUTE_REDISTRIBUTE: | |
9736ba9e | 2032 | strlcat(str, "r", sizeof(str)); |
d62a17ae | 2033 | break; |
2034 | case RIPNG_ROUTE_INTERFACE: | |
9736ba9e | 2035 | strlcat(str, "i", sizeof(str)); |
d62a17ae | 2036 | break; |
2037 | default: | |
9736ba9e | 2038 | strlcat(str, "?", sizeof(str)); |
d62a17ae | 2039 | break; |
2040 | } | |
a94434b6 | 2041 | |
d62a17ae | 2042 | return str; |
a94434b6 | 2043 | } |
2044 | ||
718e3744 | 2045 | DEFUN (show_ipv6_ripng, |
2046 | show_ipv6_ripng_cmd, | |
dde7b15b | 2047 | "show ipv6 ripng [vrf NAME]", |
718e3744 | 2048 | SHOW_STR |
8d0f15fd | 2049 | IPV6_STR |
dde7b15b RW |
2050 | "Show RIPng routes\n" |
2051 | VRF_CMD_HELP_STR) | |
718e3744 | 2052 | { |
5c84b9a5 | 2053 | struct ripng *ripng; |
fe08ba7e | 2054 | struct agg_node *rp; |
d62a17ae | 2055 | struct ripng_info *rinfo; |
2056 | struct ripng_aggregate *aggregate; | |
d62a17ae | 2057 | struct list *list = NULL; |
2058 | struct listnode *listnode = NULL; | |
2059 | int len; | |
dde7b15b RW |
2060 | const char *vrf_name; |
2061 | int idx = 0; | |
d62a17ae | 2062 | |
dde7b15b RW |
2063 | if (argv_find(argv, argc, "vrf", &idx)) |
2064 | vrf_name = argv[idx + 1]->arg; | |
2065 | else | |
2066 | vrf_name = VRF_DEFAULT_NAME; | |
2067 | ||
2068 | ripng = ripng_lookup_by_vrf_name(vrf_name); | |
2069 | if (!ripng) { | |
2070 | vty_out(vty, "%% RIPng instance not found\n"); | |
2071 | return CMD_SUCCESS; | |
2072 | } | |
2073 | if (!ripng->enabled) { | |
2074 | vty_out(vty, "%% RIPng instance is disabled\n"); | |
d62a17ae | 2075 | return CMD_SUCCESS; |
dde7b15b | 2076 | } |
d62a17ae | 2077 | |
2078 | /* Header of display. */ | |
2079 | vty_out(vty, | |
2080 | "Codes: R - RIPng, C - connected, S - Static, O - OSPF, B - BGP\n" | |
2081 | "Sub-codes:\n" | |
2082 | " (n) - normal, (s) - static, (d) - default, (r) - redistribute,\n" | |
2083 | " (i) - interface, (a/S) - aggregated/Suppressed\n\n" | |
2084 | " Network Next Hop Via Metric Tag Time\n"); | |
2085 | ||
fe08ba7e | 2086 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { |
d62a17ae | 2087 | if ((aggregate = rp->aggregate) != NULL) { |
718e3744 | 2088 | #ifdef DEBUG |
26a3ffd6 DS |
2089 | vty_out(vty, "R(a) %d/%d %pRN ", aggregate->count, |
2090 | aggregate->suppress, rp); | |
718e3744 | 2091 | #else |
26a3ffd6 | 2092 | vty_out(vty, "R(a) %pRN ", rp); |
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)) { | |
718e3744 | 2104 | #ifdef DEBUG |
26a3ffd6 | 2105 | vty_out(vty, "%c(%s) 0/%d %pRN ", |
d62a17ae | 2106 | zebra_route_char(rinfo->type), |
2107 | ripng_route_subtype_print(rinfo), | |
26a3ffd6 | 2108 | rinfo->suppress, rp); |
718e3744 | 2109 | #else |
26a3ffd6 | 2110 | vty_out(vty, "%c(%s) %pRN ", |
d62a17ae | 2111 | zebra_route_char(rinfo->type), |
26a3ffd6 | 2112 | ripng_route_subtype_print(rinfo), rp); |
718e3744 | 2113 | #endif /* DEBUG */ |
d62a17ae | 2114 | vty_out(vty, "\n"); |
2115 | vty_out(vty, "%*s", 18, " "); | |
2116 | len = vty_out(vty, "%s", | |
2117 | inet6_ntoa(rinfo->nexthop)); | |
2118 | ||
2119 | len = 28 - len; | |
2120 | if (len > 0) | |
51f7fe84 | 2121 | vty_out(vty, "%*s", len, " "); |
d62a17ae | 2122 | |
2123 | /* from */ | |
2124 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) | |
2125 | && (rinfo->sub_type == RIPNG_ROUTE_RTE)) { | |
2126 | len = vty_out( | |
2127 | vty, "%s", | |
dde7b15b RW |
2128 | ifindex2ifname( |
2129 | rinfo->ifindex, | |
2130 | ripng->vrf->vrf_id)); | |
d62a17ae | 2131 | } else if (rinfo->metric |
2132 | == RIPNG_METRIC_INFINITY) { | |
2133 | len = vty_out(vty, "kill"); | |
2134 | } else | |
2135 | len = vty_out(vty, "self"); | |
2136 | ||
2137 | len = 9 - len; | |
2138 | if (len > 0) | |
2139 | vty_out(vty, "%*s", len, " "); | |
2140 | ||
2141 | vty_out(vty, " %2d %3" ROUTE_TAG_PRI " ", | |
2142 | rinfo->metric, (route_tag_t)rinfo->tag); | |
2143 | ||
2144 | /* time */ | |
2145 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) | |
2146 | && (rinfo->sub_type == RIPNG_ROUTE_RTE)) { | |
2147 | /* RTE from remote RIP routers */ | |
2148 | ripng_vty_out_uptime(vty, rinfo); | |
2149 | } else if (rinfo->metric | |
2150 | == RIPNG_METRIC_INFINITY) { | |
2151 | /* poisonous reversed routes (gc) */ | |
2152 | ripng_vty_out_uptime(vty, rinfo); | |
2153 | } | |
2154 | ||
2155 | vty_out(vty, "\n"); | |
2156 | } | |
718e3744 | 2157 | } |
718e3744 | 2158 | |
d62a17ae | 2159 | return CMD_SUCCESS; |
718e3744 | 2160 | } |
2161 | ||
a94434b6 | 2162 | DEFUN (show_ipv6_ripng_status, |
2163 | show_ipv6_ripng_status_cmd, | |
dde7b15b | 2164 | "show ipv6 ripng [vrf NAME] status", |
a94434b6 | 2165 | SHOW_STR |
8d0f15fd | 2166 | IPV6_STR |
a94434b6 | 2167 | "Show RIPng routes\n" |
dde7b15b | 2168 | VRF_CMD_HELP_STR |
a94434b6 | 2169 | "IPv6 routing protocol process parameters and statistics\n") |
2170 | { | |
5c84b9a5 | 2171 | struct ripng *ripng; |
d62a17ae | 2172 | struct interface *ifp; |
dde7b15b RW |
2173 | const char *vrf_name; |
2174 | int idx = 0; | |
a94434b6 | 2175 | |
dde7b15b RW |
2176 | if (argv_find(argv, argc, "vrf", &idx)) |
2177 | vrf_name = argv[idx + 1]->arg; | |
2178 | else | |
2179 | vrf_name = VRF_DEFAULT_NAME; | |
2180 | ||
2181 | ripng = ripng_lookup_by_vrf_name(vrf_name); | |
2182 | if (!ripng) { | |
2183 | vty_out(vty, "%% RIPng instance not found\n"); | |
2184 | return CMD_SUCCESS; | |
2185 | } | |
2186 | if (!ripng->enabled) { | |
2187 | vty_out(vty, "%% RIPng instance is disabled\n"); | |
d62a17ae | 2188 | return CMD_SUCCESS; |
dde7b15b | 2189 | } |
a94434b6 | 2190 | |
d62a17ae | 2191 | vty_out(vty, "Routing Protocol is \"RIPng\"\n"); |
f8981ec5 | 2192 | vty_out(vty, " Sending updates every %u seconds with +/-50%%,", |
d62a17ae | 2193 | ripng->update_time); |
2194 | vty_out(vty, " next due in %lu seconds\n", | |
2195 | thread_timer_remain_second(ripng->t_update)); | |
f8981ec5 RW |
2196 | vty_out(vty, " Timeout after %u seconds,", ripng->timeout_time); |
2197 | vty_out(vty, " garbage collect after %u seconds\n", | |
d62a17ae | 2198 | ripng->garbage_time); |
a94434b6 | 2199 | |
d62a17ae | 2200 | /* Filtering status show. */ |
03a38493 | 2201 | config_show_distribute(vty, ripng->distribute_ctx); |
a94434b6 | 2202 | |
d62a17ae | 2203 | /* Default metric information. */ |
2204 | vty_out(vty, " Default redistribution metric is %d\n", | |
2205 | ripng->default_metric); | |
a94434b6 | 2206 | |
d62a17ae | 2207 | /* Redistribute information. */ |
2208 | vty_out(vty, " Redistributing:"); | |
5c84b9a5 | 2209 | ripng_redistribute_write(vty, ripng); |
d62a17ae | 2210 | vty_out(vty, "\n"); |
a94434b6 | 2211 | |
d62a17ae | 2212 | vty_out(vty, " Default version control: send version %d,", |
2213 | ripng->version); | |
2214 | vty_out(vty, " receive version %d \n", ripng->version); | |
a94434b6 | 2215 | |
d62a17ae | 2216 | vty_out(vty, " Interface Send Recv\n"); |
a94434b6 | 2217 | |
dde7b15b | 2218 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 2219 | struct ripng_interface *ri; |
2220 | ||
2221 | ri = ifp->info; | |
a94434b6 | 2222 | |
d62a17ae | 2223 | if (ri->enable_network || ri->enable_interface) { |
a94434b6 | 2224 | |
d62a17ae | 2225 | vty_out(vty, " %-17s%-3d %-3d\n", ifp->name, |
2226 | ripng->version, ripng->version); | |
2227 | } | |
a94434b6 | 2228 | } |
a94434b6 | 2229 | |
d62a17ae | 2230 | vty_out(vty, " Routing for Networks:\n"); |
5c84b9a5 | 2231 | ripng_network_write(vty, ripng); |
a94434b6 | 2232 | |
d62a17ae | 2233 | vty_out(vty, " Routing Information Sources:\n"); |
2234 | vty_out(vty, | |
2235 | " Gateway BadPackets BadRoutes Distance Last Update\n"); | |
5c84b9a5 | 2236 | ripng_peer_display(vty, ripng); |
a94434b6 | 2237 | |
d62a17ae | 2238 | return CMD_SUCCESS; |
a94434b6 | 2239 | } |
2240 | ||
718e3744 | 2241 | #if 0 |
2242 | /* RIPng update timer setup. */ | |
2243 | DEFUN (ripng_update_timer, | |
2244 | ripng_update_timer_cmd, | |
2245 | "update-timer SECOND", | |
2246 | "Set RIPng update timer in seconds\n" | |
2247 | "Seconds\n") | |
2248 | { | |
2249 | unsigned long update; | |
2250 | char *endptr = NULL; | |
2251 | ||
2252 | update = strtoul (argv[0], &endptr, 10); | |
2253 | if (update == ULONG_MAX || *endptr != '\0') | |
2254 | { | |
26a429fe | 2255 | vty_out (vty, "update timer value error\n"); |
f1a05de9 | 2256 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2257 | } |
2258 | ||
2259 | ripng->update_time = update; | |
2260 | ||
2261 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2262 | return CMD_SUCCESS; | |
2263 | } | |
2264 | ||
2265 | DEFUN (no_ripng_update_timer, | |
2266 | no_ripng_update_timer_cmd, | |
2267 | "no update-timer SECOND", | |
2268 | NO_STR | |
2269 | "Unset RIPng update timer in seconds\n" | |
2270 | "Seconds\n") | |
2271 | { | |
2272 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2273 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2274 | return CMD_SUCCESS; | |
2275 | } | |
2276 | ||
2277 | /* RIPng timeout timer setup. */ | |
2278 | DEFUN (ripng_timeout_timer, | |
2279 | ripng_timeout_timer_cmd, | |
2280 | "timeout-timer SECOND", | |
2281 | "Set RIPng timeout timer in seconds\n" | |
2282 | "Seconds\n") | |
2283 | { | |
2284 | unsigned long timeout; | |
2285 | char *endptr = NULL; | |
2286 | ||
2287 | timeout = strtoul (argv[0], &endptr, 10); | |
2288 | if (timeout == ULONG_MAX || *endptr != '\0') | |
2289 | { | |
26a429fe | 2290 | vty_out (vty, "timeout timer value error\n"); |
f1a05de9 | 2291 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2292 | } |
2293 | ||
2294 | ripng->timeout_time = timeout; | |
2295 | ||
2296 | return CMD_SUCCESS; | |
2297 | } | |
2298 | ||
2299 | DEFUN (no_ripng_timeout_timer, | |
2300 | no_ripng_timeout_timer_cmd, | |
2301 | "no timeout-timer SECOND", | |
2302 | NO_STR | |
2303 | "Unset RIPng timeout timer in seconds\n" | |
2304 | "Seconds\n") | |
2305 | { | |
2306 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2307 | return CMD_SUCCESS; | |
2308 | } | |
2309 | ||
2310 | /* RIPng garbage timer setup. */ | |
2311 | DEFUN (ripng_garbage_timer, | |
2312 | ripng_garbage_timer_cmd, | |
2313 | "garbage-timer SECOND", | |
2314 | "Set RIPng garbage timer in seconds\n" | |
2315 | "Seconds\n") | |
2316 | { | |
2317 | unsigned long garbage; | |
2318 | char *endptr = NULL; | |
2319 | ||
2320 | garbage = strtoul (argv[0], &endptr, 10); | |
2321 | if (garbage == ULONG_MAX || *endptr != '\0') | |
2322 | { | |
26a429fe | 2323 | vty_out (vty, "garbage timer value error\n"); |
f1a05de9 | 2324 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2325 | } |
2326 | ||
2327 | ripng->garbage_time = garbage; | |
2328 | ||
2329 | return CMD_SUCCESS; | |
2330 | } | |
2331 | ||
2332 | DEFUN (no_ripng_garbage_timer, | |
2333 | no_ripng_garbage_timer_cmd, | |
2334 | "no garbage-timer SECOND", | |
2335 | NO_STR | |
2336 | "Unset RIPng garbage timer in seconds\n" | |
2337 | "Seconds\n") | |
2338 | { | |
2339 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2340 | return CMD_SUCCESS; | |
2341 | } | |
2342 | #endif /* 0 */ | |
2343 | ||
d7d73ffc | 2344 | #if 0 |
dd4f9f99 DW |
2345 | DEFUN (show_ipv6_protocols, |
2346 | show_ipv6_protocols_cmd, | |
718e3744 | 2347 | "show ipv6 protocols", |
2348 | SHOW_STR | |
8d0f15fd | 2349 | IPV6_STR |
d911a12a | 2350 | "Routing protocol information\n") |
718e3744 | 2351 | { |
2352 | if (! ripng) | |
2353 | return CMD_SUCCESS; | |
2354 | ||
26a429fe | 2355 | vty_out (vty, "Routing Protocol is \"ripng\"\n"); |
c258527b | 2356 | |
55f70b67 DL |
2357 | vty_out (vty, "Sending updates every %ld seconds, next due in %d seconds\n", |
2358 | ripng->update_time, 0); | |
718e3744 | 2359 | |
55f70b67 | 2360 | vty_out (vty, "Timerout after %ld seconds, garbage correct %ld\n", |
718e3744 | 2361 | ripng->timeout_time, |
55f70b67 | 2362 | ripng->garbage_time); |
718e3744 | 2363 | |
2364 | vty_out (vty, "Outgoing update filter list for all interfaces is not set"); | |
2365 | vty_out (vty, "Incoming update filter list for all interfaces is not set"); | |
2366 | ||
2367 | return CMD_SUCCESS; | |
2368 | } | |
d7d73ffc | 2369 | #endif |
718e3744 | 2370 | |
fac76f9c | 2371 | /* Update ECMP routes to zebra when ECMP is disabled. */ |
5c84b9a5 | 2372 | void ripng_ecmp_disable(struct ripng *ripng) |
d62a17ae | 2373 | { |
fe08ba7e | 2374 | struct agg_node *rp; |
d62a17ae | 2375 | struct ripng_info *rinfo, *tmp_rinfo; |
2376 | struct list *list; | |
2377 | struct listnode *node, *nextnode; | |
2378 | ||
2379 | if (!ripng) | |
2380 | return; | |
2381 | ||
fe08ba7e | 2382 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 2383 | if ((list = rp->info) != NULL && listcount(list) > 1) { |
2384 | rinfo = listgetdata(listhead(list)); | |
2385 | if (!ripng_route_rte(rinfo)) | |
2386 | continue; | |
2387 | ||
2388 | /* Drop all other entries, except the first one. */ | |
2389 | for (ALL_LIST_ELEMENTS(list, node, nextnode, tmp_rinfo)) | |
2390 | if (tmp_rinfo != rinfo) { | |
2391 | RIPNG_TIMER_OFF(tmp_rinfo->t_timeout); | |
2392 | RIPNG_TIMER_OFF( | |
2393 | tmp_rinfo->t_garbage_collect); | |
2394 | list_delete_node(list, node); | |
2395 | ripng_info_free(tmp_rinfo); | |
2396 | } | |
2397 | ||
2398 | /* Update zebra. */ | |
5c84b9a5 | 2399 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 2400 | |
2401 | /* Set the route change flag. */ | |
2402 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
2403 | ||
2404 | /* Signal the output process to trigger an update. */ | |
5c84b9a5 | 2405 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 2406 | } |
fac76f9c FL |
2407 | } |
2408 | ||
718e3744 | 2409 | /* RIPng configuration write function. */ |
d62a17ae | 2410 | static int ripng_config_write(struct vty *vty) |
2411 | { | |
dde7b15b | 2412 | struct ripng *ripng; |
d62a17ae | 2413 | int write = 0; |
d62a17ae | 2414 | |
dde7b15b RW |
2415 | RB_FOREACH(ripng, ripng_instance_head, &ripng_instances) { |
2416 | char xpath[XPATH_MAXLEN]; | |
2417 | struct lyd_node *dnode; | |
2418 | ||
2419 | snprintf(xpath, sizeof(xpath), | |
2420 | "/frr-ripngd:ripngd/instance[vrf='%s']", | |
2421 | ripng->vrf_name); | |
2422 | ||
2423 | dnode = yang_dnode_get(running_config->dnode, xpath); | |
2424 | assert(dnode); | |
d62a17ae | 2425 | |
5c84b9a5 | 2426 | nb_cli_show_dnode_cmds(vty, dnode, false); |
718e3744 | 2427 | |
dde7b15b | 2428 | config_write_distribute(vty, ripng->distribute_ctx); |
4b23867c | 2429 | config_write_if_rmap(vty, ripng->if_rmap_ctx); |
718e3744 | 2430 | |
9a12e9e5 | 2431 | write = 1; |
d62a17ae | 2432 | } |
9a12e9e5 | 2433 | |
d62a17ae | 2434 | return write; |
718e3744 | 2435 | } |
2436 | ||
612c2c15 | 2437 | static int ripng_config_write(struct vty *vty); |
718e3744 | 2438 | /* RIPng node structure. */ |
d62a17ae | 2439 | static struct cmd_node cmd_ripng_node = { |
f4b8291f | 2440 | .name = "ripng", |
62b346ee | 2441 | .node = RIPNG_NODE, |
24389580 | 2442 | .parent_node = CONFIG_NODE, |
62b346ee | 2443 | .prompt = "%s(config-router)# ", |
612c2c15 | 2444 | .config_write = ripng_config_write, |
718e3744 | 2445 | }; |
2446 | ||
03a38493 PG |
2447 | static void ripng_distribute_update(struct distribute_ctx *ctx, |
2448 | struct distribute *dist) | |
d62a17ae | 2449 | { |
2450 | struct interface *ifp; | |
2451 | struct ripng_interface *ri; | |
2452 | struct access_list *alist; | |
2453 | struct prefix_list *plist; | |
2454 | ||
dde7b15b | 2455 | if (!ctx->vrf || !dist->ifname) |
d62a17ae | 2456 | return; |
2457 | ||
a36898e7 | 2458 | ifp = if_lookup_by_name(dist->ifname, ctx->vrf->vrf_id); |
d62a17ae | 2459 | if (ifp == NULL) |
2460 | return; | |
2461 | ||
2462 | ri = ifp->info; | |
2463 | ||
2464 | if (dist->list[DISTRIBUTE_V6_IN]) { | |
2465 | alist = access_list_lookup(AFI_IP6, | |
2466 | dist->list[DISTRIBUTE_V6_IN]); | |
2467 | if (alist) | |
2468 | ri->list[RIPNG_FILTER_IN] = alist; | |
2469 | else | |
2470 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2471 | } else | |
2472 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2473 | ||
2474 | if (dist->list[DISTRIBUTE_V6_OUT]) { | |
2475 | alist = access_list_lookup(AFI_IP6, | |
2476 | dist->list[DISTRIBUTE_V6_OUT]); | |
2477 | if (alist) | |
2478 | ri->list[RIPNG_FILTER_OUT] = alist; | |
2479 | else | |
2480 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2481 | } else | |
2482 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2483 | ||
2484 | if (dist->prefix[DISTRIBUTE_V6_IN]) { | |
2485 | plist = prefix_list_lookup(AFI_IP6, | |
2486 | dist->prefix[DISTRIBUTE_V6_IN]); | |
2487 | if (plist) | |
2488 | ri->prefix[RIPNG_FILTER_IN] = plist; | |
2489 | else | |
2490 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2491 | } else | |
2492 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2493 | ||
2494 | if (dist->prefix[DISTRIBUTE_V6_OUT]) { | |
2495 | plist = prefix_list_lookup(AFI_IP6, | |
2496 | dist->prefix[DISTRIBUTE_V6_OUT]); | |
2497 | if (plist) | |
2498 | ri->prefix[RIPNG_FILTER_OUT] = plist; | |
2499 | else | |
2500 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2501 | } else | |
2502 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2503 | } | |
2504 | ||
2505 | void ripng_distribute_update_interface(struct interface *ifp) | |
2506 | { | |
dde7b15b RW |
2507 | struct ripng_interface *ri = ifp->info; |
2508 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 2509 | struct distribute *dist; |
2510 | ||
03a38493 PG |
2511 | if (!ripng) |
2512 | return; | |
2513 | dist = distribute_lookup(ripng->distribute_ctx, ifp->name); | |
d62a17ae | 2514 | if (dist) |
03a38493 | 2515 | ripng_distribute_update(ripng->distribute_ctx, dist); |
718e3744 | 2516 | } |
2517 | ||
2518 | /* Update all interface's distribute list. */ | |
d62a17ae | 2519 | static void ripng_distribute_update_all(struct prefix_list *notused) |
718e3744 | 2520 | { |
f4e14fdb | 2521 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 2522 | struct interface *ifp; |
718e3744 | 2523 | |
451fda4f | 2524 | FOR_ALL_INTERFACES (vrf, ifp) |
d62a17ae | 2525 | ripng_distribute_update_interface(ifp); |
718e3744 | 2526 | } |
c9e52be3 | 2527 | |
d62a17ae | 2528 | static void ripng_distribute_update_all_wrapper(struct access_list *notused) |
c9e52be3 | 2529 | { |
d62a17ae | 2530 | ripng_distribute_update_all(NULL); |
c9e52be3 | 2531 | } |
6b0655a2 | 2532 | |
a94434b6 | 2533 | /* delete all the added ripng routes. */ |
5c84b9a5 | 2534 | void ripng_clean(struct ripng *ripng) |
d62a17ae | 2535 | { |
dde7b15b RW |
2536 | if (ripng->enabled) |
2537 | ripng_instance_disable(ripng); | |
a9caf6e9 RW |
2538 | |
2539 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
f9120f71 RW |
2540 | if (ripng->redist[i].route_map.name) |
2541 | free(ripng->redist[i].route_map.name); | |
a94434b6 | 2542 | |
a9caf6e9 | 2543 | agg_table_finish(ripng->table); |
56bf1cb2 | 2544 | list_delete(&ripng->peer_list); |
a9caf6e9 | 2545 | distribute_list_delete(&ripng->distribute_ctx); |
8f88441d | 2546 | if_rmap_ctx_delete(ripng->if_rmap_ctx); |
0581e54d | 2547 | |
a9caf6e9 RW |
2548 | stream_free(ripng->ibuf); |
2549 | stream_free(ripng->obuf); | |
a94434b6 | 2550 | |
5c84b9a5 RW |
2551 | ripng_clean_network(ripng); |
2552 | ripng_passive_interface_clean(ripng); | |
b0ba762f | 2553 | vector_free(ripng->enable_if); |
29b94d58 | 2554 | agg_table_finish(ripng->enable_network); |
0c32404f | 2555 | vector_free(ripng->passive_interface); |
26c6be93 | 2556 | list_delete(&ripng->offset_list_master); |
5c84b9a5 | 2557 | ripng_interface_clean(ripng); |
5c84b9a5 | 2558 | |
dde7b15b RW |
2559 | RB_REMOVE(ripng_instance_head, &ripng_instances, ripng); |
2560 | XFREE(MTYPE_RIPNG_VRF_NAME, ripng->vrf_name); | |
a9caf6e9 | 2561 | XFREE(MTYPE_RIPNG, ripng); |
a94434b6 | 2562 | } |
2563 | ||
4b23867c PG |
2564 | static void ripng_if_rmap_update(struct if_rmap_ctx *ctx, |
2565 | struct if_rmap *if_rmap) | |
718e3744 | 2566 | { |
aec0d756 | 2567 | struct interface *ifp = NULL; |
d62a17ae | 2568 | struct ripng_interface *ri; |
2569 | struct route_map *rmap; | |
aec0d756 | 2570 | struct vrf *vrf = NULL; |
718e3744 | 2571 | |
aec0d756 PG |
2572 | if (ctx->name) |
2573 | vrf = vrf_lookup_by_name(ctx->name); | |
2574 | if (vrf) | |
a36898e7 | 2575 | ifp = if_lookup_by_name(if_rmap->ifname, vrf->vrf_id); |
d62a17ae | 2576 | if (ifp == NULL) |
2577 | return; | |
718e3744 | 2578 | |
d62a17ae | 2579 | ri = ifp->info; |
718e3744 | 2580 | |
d62a17ae | 2581 | if (if_rmap->routemap[IF_RMAP_IN]) { |
2582 | rmap = route_map_lookup_by_name(if_rmap->routemap[IF_RMAP_IN]); | |
2583 | if (rmap) | |
2584 | ri->routemap[IF_RMAP_IN] = rmap; | |
2585 | else | |
2586 | ri->routemap[IF_RMAP_IN] = NULL; | |
2587 | } else | |
2588 | ri->routemap[RIPNG_FILTER_IN] = NULL; | |
718e3744 | 2589 | |
d62a17ae | 2590 | if (if_rmap->routemap[IF_RMAP_OUT]) { |
2591 | rmap = route_map_lookup_by_name(if_rmap->routemap[IF_RMAP_OUT]); | |
2592 | if (rmap) | |
2593 | ri->routemap[IF_RMAP_OUT] = rmap; | |
2594 | else | |
2595 | ri->routemap[IF_RMAP_OUT] = NULL; | |
2596 | } else | |
2597 | ri->routemap[RIPNG_FILTER_OUT] = NULL; | |
718e3744 | 2598 | } |
2599 | ||
d62a17ae | 2600 | void ripng_if_rmap_update_interface(struct interface *ifp) |
718e3744 | 2601 | { |
8f88441d RW |
2602 | struct ripng_interface *ri = ifp->info; |
2603 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 2604 | struct if_rmap *if_rmap; |
4b23867c | 2605 | struct if_rmap_ctx *ctx; |
718e3744 | 2606 | |
4b23867c PG |
2607 | if (!ripng) |
2608 | return; | |
2609 | ctx = ripng->if_rmap_ctx; | |
2610 | if (!ctx) | |
2611 | return; | |
2612 | if_rmap = if_rmap_lookup(ctx, ifp->name); | |
d62a17ae | 2613 | if (if_rmap) |
4b23867c | 2614 | ripng_if_rmap_update(ctx, if_rmap); |
718e3744 | 2615 | } |
2616 | ||
5c84b9a5 | 2617 | static void ripng_routemap_update_redistribute(struct ripng *ripng) |
718e3744 | 2618 | { |
5c84b9a5 | 2619 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) { |
8f88441d | 2620 | if (ripng->redist[i].route_map.name) { |
f9120f71 RW |
2621 | ripng->redist[i].route_map.map = |
2622 | route_map_lookup_by_name( | |
2623 | ripng->redist[i].route_map.name); | |
8f88441d RW |
2624 | route_map_counter_increment( |
2625 | ripng->redist[i].route_map.map); | |
d62a17ae | 2626 | } |
718e3744 | 2627 | } |
718e3744 | 2628 | } |
2629 | ||
d62a17ae | 2630 | static void ripng_routemap_update(const char *unused) |
718e3744 | 2631 | { |
f4e14fdb | 2632 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
5c84b9a5 | 2633 | struct ripng *ripng; |
d62a17ae | 2634 | struct interface *ifp; |
718e3744 | 2635 | |
451fda4f | 2636 | FOR_ALL_INTERFACES (vrf, ifp) |
d62a17ae | 2637 | ripng_if_rmap_update_interface(ifp); |
718e3744 | 2638 | |
5c84b9a5 RW |
2639 | ripng = vrf->info; |
2640 | if (ripng) | |
2641 | ripng_routemap_update_redistribute(ripng); | |
718e3744 | 2642 | } |
2643 | ||
dde7b15b RW |
2644 | /* Link RIPng instance to VRF. */ |
2645 | static void ripng_vrf_link(struct ripng *ripng, struct vrf *vrf) | |
2646 | { | |
2647 | struct interface *ifp; | |
2648 | ||
2649 | ripng->vrf = vrf; | |
2650 | ripng->distribute_ctx->vrf = vrf; | |
2651 | vrf->info = ripng; | |
2652 | ||
2653 | FOR_ALL_INTERFACES (vrf, ifp) | |
2654 | ripng_interface_sync(ifp); | |
2655 | } | |
2656 | ||
2657 | /* Unlink RIPng instance from VRF. */ | |
2658 | static void ripng_vrf_unlink(struct ripng *ripng, struct vrf *vrf) | |
2659 | { | |
2660 | struct interface *ifp; | |
2661 | ||
2662 | ripng->vrf = NULL; | |
2663 | ripng->distribute_ctx->vrf = NULL; | |
2664 | vrf->info = NULL; | |
2665 | ||
2666 | FOR_ALL_INTERFACES (vrf, ifp) | |
2667 | ripng_interface_sync(ifp); | |
2668 | } | |
2669 | ||
2670 | static void ripng_instance_enable(struct ripng *ripng, struct vrf *vrf, | |
2671 | int sock) | |
2672 | { | |
2673 | ripng->sock = sock; | |
2674 | ||
2675 | ripng_vrf_link(ripng, vrf); | |
2676 | ripng->enabled = true; | |
2677 | ||
f9120f71 RW |
2678 | /* Resend all redistribute requests. */ |
2679 | ripng_redistribute_enable(ripng); | |
2680 | ||
dde7b15b RW |
2681 | /* Create read and timer thread. */ |
2682 | ripng_event(ripng, RIPNG_READ, ripng->sock); | |
2683 | ripng_event(ripng, RIPNG_UPDATE_EVENT, 1); | |
2684 | ||
2685 | ripng_zebra_vrf_register(vrf); | |
2686 | } | |
2687 | ||
2688 | static void ripng_instance_disable(struct ripng *ripng) | |
2689 | { | |
2690 | struct vrf *vrf = ripng->vrf; | |
2691 | struct agg_node *rp; | |
2692 | ||
2693 | /* Clear RIPng routes */ | |
2694 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { | |
2695 | struct ripng_aggregate *aggregate; | |
2696 | struct list *list; | |
2697 | ||
2698 | if ((list = rp->info) != NULL) { | |
2699 | struct ripng_info *rinfo; | |
2700 | struct listnode *listnode; | |
2701 | ||
2702 | rinfo = listgetdata(listhead(list)); | |
2703 | if (ripng_route_rte(rinfo)) | |
2704 | ripng_zebra_ipv6_delete(ripng, rp); | |
2705 | ||
2706 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
2707 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
2708 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
2709 | ripng_info_free(rinfo); | |
2710 | } | |
2711 | list_delete(&list); | |
2712 | rp->info = NULL; | |
2713 | agg_unlock_node(rp); | |
2714 | } | |
2715 | ||
2716 | if ((aggregate = rp->aggregate) != NULL) { | |
2717 | ripng_aggregate_free(aggregate); | |
2718 | rp->aggregate = NULL; | |
2719 | agg_unlock_node(rp); | |
2720 | } | |
2721 | } | |
2722 | ||
f9120f71 RW |
2723 | /* Flush all redistribute requests. */ |
2724 | ripng_redistribute_disable(ripng); | |
2725 | ||
dde7b15b RW |
2726 | /* Cancel the RIPng timers */ |
2727 | RIPNG_TIMER_OFF(ripng->t_update); | |
2728 | RIPNG_TIMER_OFF(ripng->t_triggered_update); | |
2729 | RIPNG_TIMER_OFF(ripng->t_triggered_interval); | |
2730 | ||
2731 | /* Cancel the read thread */ | |
2732 | if (ripng->t_read) { | |
2733 | thread_cancel(ripng->t_read); | |
2734 | ripng->t_read = NULL; | |
2735 | } | |
2736 | ||
2737 | /* Close the RIPng socket */ | |
2738 | if (ripng->sock >= 0) { | |
2739 | close(ripng->sock); | |
2740 | ripng->sock = -1; | |
2741 | } | |
2742 | ||
2743 | /* Clear existing peers. */ | |
2744 | list_delete_all_node(ripng->peer_list); | |
2745 | ||
2746 | ripng_zebra_vrf_deregister(vrf); | |
2747 | ||
2748 | ripng_vrf_unlink(ripng, vrf); | |
2749 | ripng->enabled = false; | |
2750 | } | |
2751 | ||
2752 | static int ripng_vrf_new(struct vrf *vrf) | |
2753 | { | |
2754 | if (IS_RIPNG_DEBUG_EVENT) | |
2755 | zlog_debug("%s: VRF created: %s(%u)", __func__, vrf->name, | |
2756 | vrf->vrf_id); | |
2757 | ||
2758 | return 0; | |
2759 | } | |
2760 | ||
2761 | static int ripng_vrf_delete(struct vrf *vrf) | |
2762 | { | |
2763 | if (IS_RIPNG_DEBUG_EVENT) | |
2764 | zlog_debug("%s: VRF deleted: %s(%u)", __func__, vrf->name, | |
2765 | vrf->vrf_id); | |
2766 | ||
2767 | return 0; | |
2768 | } | |
2769 | ||
2770 | static int ripng_vrf_enable(struct vrf *vrf) | |
2771 | { | |
2772 | struct ripng *ripng; | |
2773 | int socket; | |
2774 | ||
2775 | ripng = ripng_lookup_by_vrf_name(vrf->name); | |
be2bad2e PG |
2776 | if (!ripng) { |
2777 | char *old_vrf_name = NULL; | |
2778 | ||
2779 | ripng = (struct ripng *)vrf->info; | |
2780 | if (!ripng) | |
2781 | return 0; | |
2782 | /* update vrf name */ | |
2783 | if (ripng->vrf_name) | |
2784 | old_vrf_name = ripng->vrf_name; | |
2785 | ripng->vrf_name = XSTRDUP(MTYPE_RIPNG_VRF_NAME, vrf->name); | |
2786 | /* | |
2787 | * HACK: Change the RIPng VRF in the running configuration directly, | |
2788 | * bypassing the northbound layer. This is necessary to avoid deleting | |
2789 | * the RIPng and readding it in the new VRF, which would have | |
2790 | * several implications. | |
2791 | */ | |
2792 | if (yang_module_find("frr-ripngd") && old_vrf_name) { | |
2793 | struct lyd_node *ripng_dnode; | |
2794 | ||
8685be73 RW |
2795 | ripng_dnode = yang_dnode_get( |
2796 | running_config->dnode, | |
2797 | "/frr-ripngd:ripngd/instance[vrf='%s']/vrf", | |
2798 | old_vrf_name); | |
2799 | if (ripng_dnode) { | |
2800 | yang_dnode_change_leaf(ripng_dnode, vrf->name); | |
2801 | running_config->version++; | |
be2bad2e | 2802 | } |
be2bad2e | 2803 | } |
e1b36e13 | 2804 | XFREE(MTYPE_RIPNG_VRF_NAME, old_vrf_name); |
be2bad2e PG |
2805 | } |
2806 | ||
2807 | if (ripng->enabled) | |
dde7b15b RW |
2808 | return 0; |
2809 | ||
2810 | if (IS_RIPNG_DEBUG_EVENT) | |
2811 | zlog_debug("%s: VRF %s(%u) enabled", __func__, vrf->name, | |
2812 | vrf->vrf_id); | |
2813 | ||
2814 | /* Activate the VRF RIPng instance. */ | |
be2bad2e PG |
2815 | socket = ripng_make_socket(vrf); |
2816 | if (socket < 0) | |
2817 | return -1; | |
dde7b15b | 2818 | |
be2bad2e | 2819 | ripng_instance_enable(ripng, vrf, socket); |
dde7b15b RW |
2820 | |
2821 | return 0; | |
2822 | } | |
2823 | ||
2824 | static int ripng_vrf_disable(struct vrf *vrf) | |
2825 | { | |
2826 | struct ripng *ripng; | |
2827 | ||
2828 | ripng = ripng_lookup_by_vrf_name(vrf->name); | |
2829 | if (!ripng || !ripng->enabled) | |
2830 | return 0; | |
2831 | ||
2832 | if (IS_RIPNG_DEBUG_EVENT) | |
2833 | zlog_debug("%s: VRF %s(%u) disabled", __func__, vrf->name, | |
2834 | vrf->vrf_id); | |
2835 | ||
2836 | /* Deactivate the VRF RIPng instance. */ | |
2837 | if (ripng->enabled) | |
2838 | ripng_instance_disable(ripng); | |
2839 | ||
2840 | return 0; | |
2841 | } | |
2842 | ||
2843 | void ripng_vrf_init(void) | |
2844 | { | |
2845 | vrf_init(ripng_vrf_new, ripng_vrf_enable, ripng_vrf_disable, | |
66bc1c49 | 2846 | ripng_vrf_delete, ripng_vrf_enable); |
dde7b15b RW |
2847 | } |
2848 | ||
2849 | void ripng_vrf_terminate(void) | |
2850 | { | |
2851 | vrf_terminate(); | |
2852 | } | |
2853 | ||
718e3744 | 2854 | /* Initialize ripng structure and set commands. */ |
4d762f26 | 2855 | void ripng_init(void) |
718e3744 | 2856 | { |
d62a17ae | 2857 | /* Install RIPNG_NODE. */ |
612c2c15 | 2858 | install_node(&cmd_ripng_node); |
718e3744 | 2859 | |
d62a17ae | 2860 | /* Install ripng commands. */ |
2861 | install_element(VIEW_NODE, &show_ipv6_ripng_cmd); | |
2862 | install_element(VIEW_NODE, &show_ipv6_ripng_status_cmd); | |
718e3744 | 2863 | |
d62a17ae | 2864 | install_default(RIPNG_NODE); |
718e3744 | 2865 | |
718e3744 | 2866 | #if 0 |
ee9216cf | 2867 | install_element (VIEW_NODE, &show_ipv6_protocols_cmd); |
718e3744 | 2868 | install_element (RIPNG_NODE, &ripng_update_timer_cmd); |
2869 | install_element (RIPNG_NODE, &no_ripng_update_timer_cmd); | |
2870 | install_element (RIPNG_NODE, &ripng_timeout_timer_cmd); | |
2871 | install_element (RIPNG_NODE, &no_ripng_timeout_timer_cmd); | |
2872 | install_element (RIPNG_NODE, &ripng_garbage_timer_cmd); | |
2873 | install_element (RIPNG_NODE, &no_ripng_garbage_timer_cmd); | |
2874 | #endif /* 0 */ | |
2875 | ||
d62a17ae | 2876 | ripng_if_init(); |
2877 | ripng_debug_init(); | |
718e3744 | 2878 | |
d62a17ae | 2879 | /* Access list install. */ |
2880 | access_list_init(); | |
2881 | access_list_add_hook(ripng_distribute_update_all_wrapper); | |
2882 | access_list_delete_hook(ripng_distribute_update_all_wrapper); | |
718e3744 | 2883 | |
d62a17ae | 2884 | /* Prefix list initialize.*/ |
2885 | prefix_list_init(); | |
2886 | prefix_list_add_hook(ripng_distribute_update_all); | |
2887 | prefix_list_delete_hook(ripng_distribute_update_all); | |
718e3744 | 2888 | |
d62a17ae | 2889 | /* Distribute list install. */ |
2890 | distribute_list_init(RIPNG_NODE); | |
718e3744 | 2891 | |
d62a17ae | 2892 | /* Route-map for interface. */ |
2893 | ripng_route_map_init(); | |
a94434b6 | 2894 | |
d62a17ae | 2895 | route_map_add_hook(ripng_routemap_update); |
2896 | route_map_delete_hook(ripng_routemap_update); | |
718e3744 | 2897 | |
d62a17ae | 2898 | if_rmap_init(RIPNG_NODE); |
718e3744 | 2899 | } |