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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" |
5920b3eb | 40 | #include "network.h" |
718e3744 | 41 | |
42 | #include "ripngd/ripngd.h" | |
43 | #include "ripngd/ripng_route.h" | |
44 | #include "ripngd/ripng_debug.h" | |
a94434b6 | 45 | #include "ripngd/ripng_nexthop.h" |
718e3744 | 46 | |
b3a7e30d DL |
47 | DEFINE_MGROUP(RIPNGD, "ripngd") |
48 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG, "RIPng structure") | |
49 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_VRF_NAME, "RIPng VRF name") | |
50 | DEFINE_MTYPE_STATIC(RIPNGD, RIPNG_ROUTE, "RIPng route info") | |
51 | ||
d62a17ae | 52 | enum { ripng_all_route, |
53 | ripng_changed_route, | |
718e3744 | 54 | }; |
55 | ||
03a38493 PG |
56 | static void ripng_distribute_update(struct distribute_ctx *ctx, |
57 | struct distribute *dist); | |
58 | ||
718e3744 | 59 | /* Prototypes. */ |
d62a17ae | 60 | void ripng_output_process(struct interface *, struct sockaddr_in6 *, int); |
dde7b15b RW |
61 | static void ripng_instance_enable(struct ripng *ripng, struct vrf *vrf, |
62 | int sock); | |
63 | static void ripng_instance_disable(struct ripng *ripng); | |
d62a17ae | 64 | int ripng_triggered_update(struct thread *); |
4b23867c PG |
65 | static void ripng_if_rmap_update(struct if_rmap_ctx *ctx, |
66 | struct if_rmap *if_rmap); | |
718e3744 | 67 | |
dde7b15b RW |
68 | /* Generate rb-tree of RIPng instances. */ |
69 | static inline int ripng_instance_compare(const struct ripng *a, | |
70 | const struct ripng *b) | |
71 | { | |
72 | return strcmp(a->vrf_name, b->vrf_name); | |
73 | } | |
74 | RB_GENERATE(ripng_instance_head, ripng, entry, ripng_instance_compare) | |
75 | ||
76 | struct ripng_instance_head ripng_instances = RB_INITIALIZER(&ripng_instances); | |
77 | ||
718e3744 | 78 | /* RIPng next hop specification. */ |
d62a17ae | 79 | struct ripng_nexthop { |
80 | enum ripng_nexthop_type { | |
81 | RIPNG_NEXTHOP_UNSPEC, | |
82 | RIPNG_NEXTHOP_ADDRESS | |
83 | } flag; | |
84 | struct in6_addr address; | |
718e3744 | 85 | }; |
718e3744 | 86 | |
49e06d25 | 87 | int ripng_route_rte(struct ripng_info *rinfo) |
a94434b6 | 88 | { |
d62a17ae | 89 | return (rinfo->type == ZEBRA_ROUTE_RIPNG |
90 | && rinfo->sub_type == RIPNG_ROUTE_RTE); | |
a94434b6 | 91 | } |
92 | ||
718e3744 | 93 | /* Allocate new ripng information. */ |
4d762f26 | 94 | struct ripng_info *ripng_info_new(void) |
718e3744 | 95 | { |
d62a17ae | 96 | struct ripng_info *new; |
718e3744 | 97 | |
d62a17ae | 98 | new = XCALLOC(MTYPE_RIPNG_ROUTE, sizeof(struct ripng_info)); |
99 | return new; | |
718e3744 | 100 | } |
101 | ||
102 | /* Free ripng information. */ | |
d62a17ae | 103 | void ripng_info_free(struct ripng_info *rinfo) |
718e3744 | 104 | { |
d62a17ae | 105 | XFREE(MTYPE_RIPNG_ROUTE, rinfo); |
718e3744 | 106 | } |
6b0655a2 | 107 | |
5c84b9a5 RW |
108 | struct ripng *ripng_info_get_instance(const struct ripng_info *rinfo) |
109 | { | |
110 | return agg_get_table_info(agg_get_table(rinfo->rp)); | |
111 | } | |
112 | ||
718e3744 | 113 | /* Create ripng socket. */ |
dde7b15b | 114 | int ripng_make_socket(struct vrf *vrf) |
718e3744 | 115 | { |
d62a17ae | 116 | int ret; |
117 | int sock; | |
118 | struct sockaddr_in6 ripaddr; | |
dde7b15b RW |
119 | const char *vrf_dev = NULL; |
120 | ||
121 | /* Make datagram socket. */ | |
122 | if (vrf->vrf_id != VRF_DEFAULT) | |
123 | vrf_dev = vrf->name; | |
0cf6db21 | 124 | frr_with_privs(&ripngd_privs) { |
dde7b15b RW |
125 | sock = vrf_socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP, |
126 | vrf->vrf_id, vrf_dev); | |
127 | if (sock < 0) { | |
128 | flog_err_sys(EC_LIB_SOCKET, | |
129 | "Cannot create UDP socket: %s", | |
130 | safe_strerror(errno)); | |
131 | return -1; | |
132 | } | |
d62a17ae | 133 | } |
718e3744 | 134 | |
dde7b15b RW |
135 | sockopt_reuseaddr(sock); |
136 | sockopt_reuseport(sock); | |
d62a17ae | 137 | setsockopt_so_recvbuf(sock, 8096); |
138 | ret = setsockopt_ipv6_pktinfo(sock, 1); | |
139 | if (ret < 0) | |
44f12f20 | 140 | goto error; |
6d0732c8 | 141 | #ifdef IPTOS_PREC_INTERNETCONTROL |
d62a17ae | 142 | ret = setsockopt_ipv6_tclass(sock, IPTOS_PREC_INTERNETCONTROL); |
143 | if (ret < 0) | |
44f12f20 | 144 | goto error; |
6d0732c8 | 145 | #endif |
d62a17ae | 146 | ret = setsockopt_ipv6_multicast_hops(sock, 255); |
147 | if (ret < 0) | |
44f12f20 | 148 | goto error; |
d62a17ae | 149 | ret = setsockopt_ipv6_multicast_loop(sock, 0); |
150 | if (ret < 0) | |
44f12f20 | 151 | goto error; |
d62a17ae | 152 | ret = setsockopt_ipv6_hoplimit(sock, 1); |
153 | if (ret < 0) | |
44f12f20 | 154 | goto error; |
d62a17ae | 155 | |
156 | memset(&ripaddr, 0, sizeof(ripaddr)); | |
157 | ripaddr.sin6_family = AF_INET6; | |
718e3744 | 158 | #ifdef SIN6_LEN |
d62a17ae | 159 | ripaddr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 160 | #endif /* SIN6_LEN */ |
d62a17ae | 161 | ripaddr.sin6_port = htons(RIPNG_PORT_DEFAULT); |
718e3744 | 162 | |
0cf6db21 | 163 | frr_with_privs(&ripngd_privs) { |
01b9e3fd DL |
164 | ret = bind(sock, (struct sockaddr *)&ripaddr, sizeof(ripaddr)); |
165 | if (ret < 0) { | |
633fc9b1 DL |
166 | zlog_err("Can't bind ripng socket: %s.", |
167 | safe_strerror(errno)); | |
01b9e3fd DL |
168 | goto error; |
169 | } | |
d62a17ae | 170 | } |
d62a17ae | 171 | return sock; |
44f12f20 RW |
172 | |
173 | error: | |
174 | close(sock); | |
175 | return ret; | |
718e3744 | 176 | } |
177 | ||
178 | /* Send RIPng packet. */ | |
d62a17ae | 179 | int ripng_send_packet(caddr_t buf, int bufsize, struct sockaddr_in6 *to, |
180 | struct interface *ifp) | |
181 | { | |
5c84b9a5 RW |
182 | struct ripng_interface *ri = ifp->info; |
183 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 184 | int ret; |
185 | struct msghdr msg; | |
186 | struct iovec iov; | |
187 | struct cmsghdr *cmsgptr; | |
2ae9e38f | 188 | char adata[256] = {}; |
d62a17ae | 189 | struct in6_pktinfo *pkt; |
190 | struct sockaddr_in6 addr; | |
191 | ||
192 | if (IS_RIPNG_DEBUG_SEND) { | |
193 | if (to) | |
194 | zlog_debug("send to %s", inet6_ntoa(to->sin6_addr)); | |
195 | zlog_debug(" send interface %s", ifp->name); | |
196 | zlog_debug(" send packet size %d", bufsize); | |
197 | } | |
198 | ||
199 | memset(&addr, 0, sizeof(struct sockaddr_in6)); | |
200 | addr.sin6_family = AF_INET6; | |
718e3744 | 201 | #ifdef SIN6_LEN |
d62a17ae | 202 | addr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 203 | #endif /* SIN6_LEN */ |
d62a17ae | 204 | addr.sin6_flowinfo = htonl(RIPNG_PRIORITY_DEFAULT); |
205 | ||
206 | /* When destination is specified. */ | |
207 | if (to != NULL) { | |
208 | addr.sin6_addr = to->sin6_addr; | |
209 | addr.sin6_port = to->sin6_port; | |
210 | } else { | |
211 | inet_pton(AF_INET6, RIPNG_GROUP, &addr.sin6_addr); | |
212 | addr.sin6_port = htons(RIPNG_PORT_DEFAULT); | |
213 | } | |
718e3744 | 214 | |
0af35d90 | 215 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 216 | msg.msg_name = (void *)&addr; |
217 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
218 | msg.msg_iov = &iov; | |
219 | msg.msg_iovlen = 1; | |
220 | msg.msg_control = (void *)adata; | |
221 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
222 | ||
223 | iov.iov_base = buf; | |
224 | iov.iov_len = bufsize; | |
225 | ||
226 | cmsgptr = (struct cmsghdr *)adata; | |
227 | cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
228 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
229 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
230 | ||
231 | pkt = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
232 | memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); | |
233 | pkt->ipi6_ifindex = ifp->ifindex; | |
234 | ||
235 | ret = sendmsg(ripng->sock, &msg, 0); | |
236 | ||
237 | if (ret < 0) { | |
238 | if (to) | |
450971aa | 239 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
240 | "RIPng send fail on %s to %s: %s", |
241 | ifp->name, inet6_ntoa(to->sin6_addr), | |
242 | safe_strerror(errno)); | |
d62a17ae | 243 | else |
1c50c1c0 QY |
244 | flog_err_sys(EC_LIB_SOCKET, "RIPng send fail on %s: %s", |
245 | ifp->name, safe_strerror(errno)); | |
d62a17ae | 246 | } |
718e3744 | 247 | |
d62a17ae | 248 | return ret; |
718e3744 | 249 | } |
250 | ||
251 | /* Receive UDP RIPng packet from socket. */ | |
d7c0a89a | 252 | static int ripng_recv_packet(int sock, uint8_t *buf, int bufsize, |
d62a17ae | 253 | struct sockaddr_in6 *from, ifindex_t *ifindex, |
254 | int *hoplimit) | |
255 | { | |
256 | int ret; | |
257 | struct msghdr msg; | |
258 | struct iovec iov; | |
259 | struct cmsghdr *cmsgptr; | |
260 | struct in6_addr dst = {.s6_addr = {0}}; | |
261 | ||
262 | memset(&dst, 0, sizeof(struct in6_addr)); | |
263 | ||
264 | /* Ancillary data. This store cmsghdr and in6_pktinfo. But at this | |
265 | point I can't determine size of cmsghdr */ | |
266 | char adata[1024]; | |
267 | ||
268 | /* Fill in message and iovec. */ | |
0af35d90 | 269 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 270 | msg.msg_name = (void *)from; |
271 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
272 | msg.msg_iov = &iov; | |
273 | msg.msg_iovlen = 1; | |
274 | msg.msg_control = (void *)adata; | |
0d6f7fd6 | 275 | msg.msg_controllen = sizeof(adata); |
d62a17ae | 276 | iov.iov_base = buf; |
277 | iov.iov_len = bufsize; | |
278 | ||
279 | /* If recvmsg fail return minus value. */ | |
280 | ret = recvmsg(sock, &msg, 0); | |
281 | if (ret < 0) | |
282 | return ret; | |
283 | ||
adf0e7c6 | 284 | for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; |
d62a17ae | 285 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) { |
286 | /* I want interface index which this packet comes from. */ | |
287 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
288 | && cmsgptr->cmsg_type == IPV6_PKTINFO) { | |
289 | struct in6_pktinfo *ptr; | |
290 | ||
291 | ptr = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
292 | *ifindex = ptr->ipi6_ifindex; | |
293 | dst = ptr->ipi6_addr; | |
294 | ||
295 | if (*ifindex == 0) | |
296 | zlog_warn( | |
297 | "Interface index returned by IPV6_PKTINFO is zero"); | |
298 | } | |
299 | ||
300 | /* Incoming packet's multicast hop limit. */ | |
301 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
302 | && cmsgptr->cmsg_type == IPV6_HOPLIMIT) { | |
303 | int *phoplimit = (int *)CMSG_DATA(cmsgptr); | |
304 | *hoplimit = *phoplimit; | |
305 | } | |
5eb9d11b | 306 | } |
718e3744 | 307 | |
d62a17ae | 308 | /* Hoplimit check shold be done when destination address is |
309 | multicast address. */ | |
310 | if (!IN6_IS_ADDR_MULTICAST(&dst)) | |
311 | *hoplimit = -1; | |
718e3744 | 312 | |
d62a17ae | 313 | return ret; |
718e3744 | 314 | } |
315 | ||
316 | /* Dump rip packet */ | |
d62a17ae | 317 | void ripng_packet_dump(struct ripng_packet *packet, int size, |
318 | const char *sndrcv) | |
319 | { | |
320 | caddr_t lim; | |
321 | struct rte *rte; | |
322 | const char *command_str; | |
323 | ||
324 | /* Set command string. */ | |
325 | if (packet->command == RIPNG_REQUEST) | |
326 | command_str = "request"; | |
327 | else if (packet->command == RIPNG_RESPONSE) | |
328 | command_str = "response"; | |
329 | else | |
330 | command_str = "unknown"; | |
331 | ||
332 | /* Dump packet header. */ | |
333 | zlog_debug("%s %s version %d packet size %d", sndrcv, command_str, | |
334 | packet->version, size); | |
335 | ||
336 | /* Dump each routing table entry. */ | |
337 | rte = packet->rte; | |
338 | ||
339 | for (lim = (caddr_t)packet + size; (caddr_t)rte < lim; rte++) { | |
340 | if (rte->metric == RIPNG_METRIC_NEXTHOP) | |
341 | zlog_debug(" nexthop %s/%d", inet6_ntoa(rte->addr), | |
342 | rte->prefixlen); | |
343 | else | |
344 | zlog_debug(" %s/%d metric %d tag %" ROUTE_TAG_PRI, | |
345 | inet6_ntoa(rte->addr), rte->prefixlen, | |
346 | rte->metric, (route_tag_t)ntohs(rte->tag)); | |
347 | } | |
718e3744 | 348 | } |
349 | ||
350 | /* RIPng next hop address RTE (Route Table Entry). */ | |
d62a17ae | 351 | static void ripng_nexthop_rte(struct rte *rte, struct sockaddr_in6 *from, |
352 | struct ripng_nexthop *nexthop) | |
353 | { | |
354 | char buf[INET6_BUFSIZ]; | |
355 | ||
356 | /* Logging before checking RTE. */ | |
357 | if (IS_RIPNG_DEBUG_RECV) | |
358 | zlog_debug("RIPng nexthop RTE address %s tag %" ROUTE_TAG_PRI | |
359 | " prefixlen %d", | |
360 | inet6_ntoa(rte->addr), (route_tag_t)ntohs(rte->tag), | |
361 | rte->prefixlen); | |
362 | ||
363 | /* RFC2080 2.1.1 Next Hop: | |
364 | The route tag and prefix length in the next hop RTE must be | |
365 | set to zero on sending and ignored on receiption. */ | |
366 | if (ntohs(rte->tag) != 0) | |
367 | zlog_warn( | |
368 | "RIPng nexthop RTE with non zero tag value %" ROUTE_TAG_PRI | |
369 | " from %s", | |
370 | (route_tag_t)ntohs(rte->tag), | |
371 | inet6_ntoa(from->sin6_addr)); | |
372 | ||
373 | if (rte->prefixlen != 0) | |
374 | zlog_warn( | |
375 | "RIPng nexthop RTE with non zero prefixlen value %d from %s", | |
376 | rte->prefixlen, inet6_ntoa(from->sin6_addr)); | |
377 | ||
378 | /* Specifying a value of 0:0:0:0:0:0:0:0 in the prefix field of a | |
379 | next hop RTE indicates that the next hop address should be the | |
380 | originator of the RIPng advertisement. An address specified as a | |
381 | next hop must be a link-local address. */ | |
382 | if (IN6_IS_ADDR_UNSPECIFIED(&rte->addr)) { | |
383 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; | |
384 | memset(&nexthop->address, 0, sizeof(struct in6_addr)); | |
385 | return; | |
386 | } | |
718e3744 | 387 | |
d62a17ae | 388 | if (IN6_IS_ADDR_LINKLOCAL(&rte->addr)) { |
389 | nexthop->flag = RIPNG_NEXTHOP_ADDRESS; | |
390 | IPV6_ADDR_COPY(&nexthop->address, &rte->addr); | |
391 | return; | |
392 | } | |
718e3744 | 393 | |
d62a17ae | 394 | /* The purpose of the next hop RTE is to eliminate packets being |
395 | routed through extra hops in the system. It is particularly useful | |
396 | when RIPng is not being run on all of the routers on a network. | |
397 | Note that next hop RTE is "advisory". That is, if the provided | |
398 | information is ignored, a possibly sub-optimal, but absolutely | |
399 | valid, route may be taken. If the received next hop address is not | |
400 | a link-local address, it should be treated as 0:0:0:0:0:0:0:0. */ | |
401 | zlog_warn("RIPng nexthop RTE with non link-local address %s from %s", | |
402 | inet6_ntoa(rte->addr), | |
403 | inet_ntop(AF_INET6, &from->sin6_addr, buf, INET6_BUFSIZ)); | |
718e3744 | 404 | |
d62a17ae | 405 | nexthop->flag = RIPNG_NEXTHOP_UNSPEC; |
406 | memset(&nexthop->address, 0, sizeof(struct in6_addr)); | |
718e3744 | 407 | |
d62a17ae | 408 | return; |
718e3744 | 409 | } |
410 | ||
411 | /* If ifp has same link-local address then return 1. */ | |
d62a17ae | 412 | static int ripng_lladdr_check(struct interface *ifp, struct in6_addr *addr) |
718e3744 | 413 | { |
d62a17ae | 414 | struct listnode *node; |
415 | struct connected *connected; | |
416 | struct prefix *p; | |
718e3744 | 417 | |
d62a17ae | 418 | for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) { |
419 | p = connected->address; | |
718e3744 | 420 | |
d62a17ae | 421 | if (p->family == AF_INET6 |
422 | && IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6) | |
423 | && IN6_ARE_ADDR_EQUAL(&p->u.prefix6, addr)) | |
424 | return 1; | |
425 | } | |
426 | return 0; | |
718e3744 | 427 | } |
428 | ||
429 | /* RIPng route garbage collect timer. */ | |
d62a17ae | 430 | static int ripng_garbage_collect(struct thread *t) |
718e3744 | 431 | { |
d62a17ae | 432 | struct ripng_info *rinfo; |
fe08ba7e | 433 | struct agg_node *rp; |
718e3744 | 434 | |
d62a17ae | 435 | rinfo = THREAD_ARG(t); |
436 | rinfo->t_garbage_collect = NULL; | |
718e3744 | 437 | |
d62a17ae | 438 | /* Off timeout timer. */ |
439 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
718e3744 | 440 | |
d62a17ae | 441 | /* Get route_node pointer. */ |
442 | rp = rinfo->rp; | |
443 | ||
444 | /* Unlock route_node. */ | |
445 | listnode_delete(rp->info, rinfo); | |
446 | if (list_isempty((struct list *)rp->info)) { | |
6a154c88 | 447 | list_delete((struct list **)&rp->info); |
fe08ba7e | 448 | agg_unlock_node(rp); |
d62a17ae | 449 | } |
718e3744 | 450 | |
d62a17ae | 451 | /* Free RIPng routing information. */ |
452 | ripng_info_free(rinfo); | |
718e3744 | 453 | |
d62a17ae | 454 | return 0; |
718e3744 | 455 | } |
456 | ||
5c84b9a5 | 457 | static void ripng_timeout_update(struct ripng *ripng, struct ripng_info *rinfo); |
c880b636 FL |
458 | |
459 | /* Add new route to the ECMP list. | |
fac76f9c FL |
460 | * RETURN: the new entry added in the list, or NULL if it is not the first |
461 | * entry and ECMP is not allowed. | |
c880b636 | 462 | */ |
5c84b9a5 RW |
463 | struct ripng_info *ripng_ecmp_add(struct ripng *ripng, |
464 | struct ripng_info *rinfo_new) | |
718e3744 | 465 | { |
fe08ba7e | 466 | struct agg_node *rp = rinfo_new->rp; |
d62a17ae | 467 | struct ripng_info *rinfo = NULL; |
468 | struct list *list = NULL; | |
718e3744 | 469 | |
d62a17ae | 470 | if (rp->info == NULL) |
471 | rp->info = list_new(); | |
472 | list = (struct list *)rp->info; | |
718e3744 | 473 | |
d62a17ae | 474 | /* If ECMP is not allowed and some entry already exists in the list, |
475 | * do nothing. */ | |
476 | if (listcount(list) && !ripng->ecmp) | |
477 | return NULL; | |
fac76f9c | 478 | |
d62a17ae | 479 | rinfo = ripng_info_new(); |
480 | memcpy(rinfo, rinfo_new, sizeof(struct ripng_info)); | |
481 | listnode_add(list, rinfo); | |
c880b636 | 482 | |
d62a17ae | 483 | if (ripng_route_rte(rinfo)) { |
5c84b9a5 RW |
484 | ripng_timeout_update(ripng, rinfo); |
485 | ripng_zebra_ipv6_add(ripng, rp); | |
d62a17ae | 486 | } |
c880b636 | 487 | |
d62a17ae | 488 | ripng_aggregate_increment(rp, rinfo); |
c880b636 | 489 | |
d62a17ae | 490 | /* Set the route change flag on the first entry. */ |
491 | rinfo = listgetdata(listhead(list)); | |
492 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 493 | |
d62a17ae | 494 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 495 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
c880b636 | 496 | |
d62a17ae | 497 | return rinfo; |
c880b636 FL |
498 | } |
499 | ||
500 | /* Replace the ECMP list with the new route. | |
501 | * RETURN: the new entry added in the list | |
502 | */ | |
5c84b9a5 RW |
503 | struct ripng_info *ripng_ecmp_replace(struct ripng *ripng, |
504 | struct ripng_info *rinfo_new) | |
d62a17ae | 505 | { |
fe08ba7e | 506 | struct agg_node *rp = rinfo_new->rp; |
d62a17ae | 507 | struct list *list = (struct list *)rp->info; |
508 | struct ripng_info *rinfo = NULL, *tmp_rinfo = NULL; | |
509 | struct listnode *node = NULL, *nextnode = NULL; | |
510 | ||
511 | if (list == NULL || listcount(list) == 0) | |
5c84b9a5 | 512 | return ripng_ecmp_add(ripng, rinfo_new); |
d62a17ae | 513 | |
514 | /* Get the first entry */ | |
515 | rinfo = listgetdata(listhead(list)); | |
516 | ||
517 | /* Learnt route replaced by a local one. Delete it from zebra. */ | |
518 | if (ripng_route_rte(rinfo) && !ripng_route_rte(rinfo_new)) | |
519 | if (CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
5c84b9a5 | 520 | ripng_zebra_ipv6_delete(ripng, rp); |
d62a17ae | 521 | |
522 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
523 | ripng_aggregate_decrement_list(rp, list); | |
524 | ||
525 | /* Re-use the first entry, and delete the others. */ | |
526 | for (ALL_LIST_ELEMENTS(list, node, nextnode, tmp_rinfo)) | |
527 | if (tmp_rinfo != rinfo) { | |
528 | RIPNG_TIMER_OFF(tmp_rinfo->t_timeout); | |
529 | RIPNG_TIMER_OFF(tmp_rinfo->t_garbage_collect); | |
530 | list_delete_node(list, node); | |
531 | ripng_info_free(tmp_rinfo); | |
532 | } | |
c880b636 | 533 | |
d62a17ae | 534 | RIPNG_TIMER_OFF(rinfo->t_timeout); |
535 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
536 | memcpy(rinfo, rinfo_new, sizeof(struct ripng_info)); | |
c880b636 | 537 | |
d62a17ae | 538 | if (ripng_route_rte(rinfo)) { |
5c84b9a5 | 539 | ripng_timeout_update(ripng, rinfo); |
d62a17ae | 540 | /* The ADD message implies an update. */ |
5c84b9a5 | 541 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 542 | } |
543 | ||
544 | ripng_aggregate_increment(rp, rinfo); | |
545 | ||
546 | /* Set the route change flag. */ | |
547 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 548 | |
d62a17ae | 549 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 550 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
718e3744 | 551 | |
d62a17ae | 552 | return rinfo; |
c880b636 FL |
553 | } |
554 | ||
555 | /* Delete one route from the ECMP list. | |
556 | * RETURN: | |
557 | * null - the entry is freed, and other entries exist in the list | |
558 | * the entry - the entry is the last one in the list; its metric is set | |
559 | * to INFINITY, and the garbage collector is started for it | |
560 | */ | |
5c84b9a5 RW |
561 | struct ripng_info *ripng_ecmp_delete(struct ripng *ripng, |
562 | struct ripng_info *rinfo) | |
d62a17ae | 563 | { |
fe08ba7e | 564 | struct agg_node *rp = rinfo->rp; |
d62a17ae | 565 | struct list *list = (struct list *)rp->info; |
566 | ||
567 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
568 | ||
569 | if (rinfo->metric != RIPNG_METRIC_INFINITY) | |
570 | ripng_aggregate_decrement(rp, rinfo); | |
571 | ||
572 | if (listcount(list) > 1) { | |
573 | /* Some other ECMP entries still exist. Just delete this entry. | |
574 | */ | |
575 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
576 | listnode_delete(list, rinfo); | |
577 | if (ripng_route_rte(rinfo) | |
578 | && CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
579 | /* The ADD message implies the update. */ | |
5c84b9a5 | 580 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 581 | ripng_info_free(rinfo); |
582 | rinfo = NULL; | |
583 | } else { | |
584 | assert(rinfo == listgetdata(listhead(list))); | |
585 | ||
586 | /* This is the only entry left in the list. We must keep it in | |
587 | * the list for garbage collection time, with INFINITY metric. | |
588 | */ | |
589 | ||
590 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
591 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, ripng_garbage_collect, | |
592 | ripng->garbage_time); | |
593 | ||
594 | if (ripng_route_rte(rinfo) | |
595 | && CHECK_FLAG(rinfo->flags, RIPNG_RTF_FIB)) | |
5c84b9a5 | 596 | ripng_zebra_ipv6_delete(ripng, rp); |
d62a17ae | 597 | } |
c880b636 | 598 | |
d62a17ae | 599 | /* Set the route change flag on the first entry. */ |
600 | rinfo = listgetdata(listhead(list)); | |
601 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
c880b636 | 602 | |
d62a17ae | 603 | /* Signal the output process to trigger an update. */ |
5c84b9a5 | 604 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
c880b636 | 605 | |
d62a17ae | 606 | return rinfo; |
c880b636 FL |
607 | } |
608 | ||
609 | /* Timeout RIPng routes. */ | |
d62a17ae | 610 | static int ripng_timeout(struct thread *t) |
c880b636 | 611 | { |
5c84b9a5 RW |
612 | struct ripng_info *rinfo = THREAD_ARG(t); |
613 | struct ripng *ripng = ripng_info_get_instance(rinfo); | |
614 | ||
615 | ripng_ecmp_delete(ripng, rinfo); | |
616 | ||
d62a17ae | 617 | return 0; |
718e3744 | 618 | } |
619 | ||
5c84b9a5 | 620 | static void ripng_timeout_update(struct ripng *ripng, struct ripng_info *rinfo) |
718e3744 | 621 | { |
d62a17ae | 622 | if (rinfo->metric != RIPNG_METRIC_INFINITY) { |
623 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
5c84b9a5 RW |
624 | thread_add_timer(master, ripng_timeout, rinfo, |
625 | ripng->timeout_time, &rinfo->t_timeout); | |
d62a17ae | 626 | } |
718e3744 | 627 | } |
628 | ||
d62a17ae | 629 | static int ripng_filter(int ripng_distribute, struct prefix_ipv6 *p, |
630 | struct ripng_interface *ri) | |
631 | { | |
632 | struct distribute *dist; | |
633 | struct access_list *alist; | |
634 | struct prefix_list *plist; | |
635 | int distribute = ripng_distribute == RIPNG_FILTER_OUT | |
636 | ? DISTRIBUTE_V6_OUT | |
637 | : DISTRIBUTE_V6_IN; | |
638 | const char *inout = ripng_distribute == RIPNG_FILTER_OUT ? "out" : "in"; | |
639 | ||
640 | /* Input distribute-list filtering. */ | |
641 | if (ri->list[ripng_distribute]) { | |
642 | if (access_list_apply(ri->list[ripng_distribute], | |
643 | (struct prefix *)p) | |
644 | == FILTER_DENY) { | |
645 | if (IS_RIPNG_DEBUG_PACKET) | |
e0259674 | 646 | zlog_debug("%pFX filtered by distribute %s", p, |
d62a17ae | 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) | |
e0259674 | 656 | zlog_debug("%pFX filtered by prefix-list %s", p, |
d62a17ae | 657 | inout); |
658 | return -1; | |
a94434b6 | 659 | } |
a94434b6 | 660 | } |
a94434b6 | 661 | |
d62a17ae | 662 | /* All interface filter check. */ |
dde7b15b | 663 | dist = distribute_lookup(ri->ripng->distribute_ctx, NULL); |
d62a17ae | 664 | if (dist) { |
665 | if (dist->list[distribute]) { | |
666 | alist = access_list_lookup(AFI_IP6, | |
667 | dist->list[distribute]); | |
668 | ||
669 | if (alist) { | |
670 | if (access_list_apply(alist, (struct prefix *)p) | |
671 | == FILTER_DENY) { | |
672 | if (IS_RIPNG_DEBUG_PACKET) | |
673 | zlog_debug( | |
e0259674 DS |
674 | "%pFX filtered by distribute %s", |
675 | p, inout); | |
d62a17ae | 676 | return -1; |
677 | } | |
678 | } | |
a94434b6 | 679 | } |
d62a17ae | 680 | if (dist->prefix[distribute]) { |
681 | plist = prefix_list_lookup(AFI_IP6, | |
682 | dist->prefix[distribute]); | |
683 | ||
684 | if (plist) { | |
685 | if (prefix_list_apply(plist, (struct prefix *)p) | |
686 | == PREFIX_DENY) { | |
687 | if (IS_RIPNG_DEBUG_PACKET) | |
688 | zlog_debug( | |
e0259674 DS |
689 | "%pFX filtered by prefix-list %s", |
690 | p, inout); | |
d62a17ae | 691 | return -1; |
692 | } | |
693 | } | |
a94434b6 | 694 | } |
a94434b6 | 695 | } |
d62a17ae | 696 | return 0; |
a94434b6 | 697 | } |
698 | ||
718e3744 | 699 | /* Process RIPng route according to RFC2080. */ |
d62a17ae | 700 | static void ripng_route_process(struct rte *rte, struct sockaddr_in6 *from, |
701 | struct ripng_nexthop *ripng_nexthop, | |
702 | struct interface *ifp) | |
703 | { | |
704 | int ret; | |
705 | struct prefix_ipv6 p; | |
fe08ba7e | 706 | struct agg_node *rp; |
d62a17ae | 707 | struct ripng_info *rinfo = NULL, newinfo; |
708 | struct ripng_interface *ri; | |
5c84b9a5 | 709 | struct ripng *ripng; |
d62a17ae | 710 | struct in6_addr *nexthop; |
711 | int same = 0; | |
712 | struct list *list = NULL; | |
713 | struct listnode *node = NULL; | |
714 | ||
715 | /* Make prefix structure. */ | |
716 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
717 | p.family = AF_INET6; | |
718 | /* p.prefix = rte->addr; */ | |
719 | IPV6_ADDR_COPY(&p.prefix, &rte->addr); | |
720 | p.prefixlen = rte->prefixlen; | |
721 | ||
722 | /* Make sure mask is applied. */ | |
723 | /* XXX We have to check the prefix is valid or not before call | |
724 | apply_mask_ipv6. */ | |
725 | apply_mask_ipv6(&p); | |
726 | ||
d62a17ae | 727 | ri = ifp->info; |
5c84b9a5 | 728 | ripng = ri->ripng; |
d62a17ae | 729 | |
5c84b9a5 | 730 | /* Apply input filters. */ |
d62a17ae | 731 | ret = ripng_filter(RIPNG_FILTER_IN, &p, ri); |
732 | if (ret < 0) | |
733 | return; | |
734 | ||
735 | memset(&newinfo, 0, sizeof(newinfo)); | |
736 | newinfo.type = ZEBRA_ROUTE_RIPNG; | |
737 | newinfo.sub_type = RIPNG_ROUTE_RTE; | |
738 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
739 | newinfo.nexthop = ripng_nexthop->address; | |
740 | else | |
741 | newinfo.nexthop = from->sin6_addr; | |
742 | newinfo.from = from->sin6_addr; | |
743 | newinfo.ifindex = ifp->ifindex; | |
744 | newinfo.metric = rte->metric; | |
745 | newinfo.metric_out = rte->metric; /* XXX */ | |
746 | newinfo.tag = ntohs(rte->tag); /* XXX */ | |
747 | ||
748 | /* Modify entry. */ | |
749 | if (ri->routemap[RIPNG_FILTER_IN]) { | |
d62a17ae | 750 | ret = route_map_apply(ri->routemap[RIPNG_FILTER_IN], |
751 | (struct prefix *)&p, RMAP_RIPNG, | |
752 | &newinfo); | |
753 | ||
754 | if (ret == RMAP_DENYMATCH) { | |
755 | if (IS_RIPNG_DEBUG_PACKET) | |
756 | zlog_debug( | |
757 | "RIPng %s/%d is filtered by route-map in", | |
758 | inet6_ntoa(p.prefix), p.prefixlen); | |
759 | return; | |
760 | } | |
718e3744 | 761 | |
d62a17ae | 762 | /* Get back the object */ |
763 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) { | |
764 | if (!IPV6_ADDR_SAME(&newinfo.nexthop, | |
765 | &ripng_nexthop->address)) { | |
766 | /* the nexthop get changed by the routemap */ | |
767 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) | |
768 | ripng_nexthop->address = | |
769 | newinfo.nexthop; | |
770 | else | |
771 | ripng_nexthop->address = in6addr_any; | |
772 | } | |
773 | } else { | |
774 | if (!IPV6_ADDR_SAME(&newinfo.nexthop, | |
775 | &from->sin6_addr)) { | |
776 | /* the nexthop get changed by the routemap */ | |
777 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop)) { | |
778 | ripng_nexthop->flag = | |
779 | RIPNG_NEXTHOP_ADDRESS; | |
780 | ripng_nexthop->address = | |
781 | newinfo.nexthop; | |
782 | } | |
783 | } | |
784 | } | |
785 | rte->tag = htons(newinfo.tag_out); /* XXX */ | |
9d303b37 DL |
786 | rte->metric = |
787 | newinfo.metric_out; /* XXX: the routemap uses the | |
788 | metric_out field */ | |
d62a17ae | 789 | } |
a94434b6 | 790 | |
d62a17ae | 791 | /* Once the entry has been validated, update the metric by |
792 | * adding the cost of the network on wich the message | |
793 | * arrived. If the result is greater than infinity, use infinity | |
794 | * (RFC2453 Sec. 3.9.2) | |
795 | **/ | |
796 | ||
797 | /* Zebra ripngd can handle offset-list in. */ | |
5c84b9a5 | 798 | ret = ripng_offset_list_apply_in(ripng, &p, ifp, &rte->metric); |
d62a17ae | 799 | |
800 | /* If offset-list does not modify the metric use interface's | |
801 | * one. */ | |
802 | if (!ret) | |
803 | rte->metric += ifp->metric ? ifp->metric : 1; | |
804 | ||
805 | if (rte->metric > RIPNG_METRIC_INFINITY) | |
806 | rte->metric = RIPNG_METRIC_INFINITY; | |
807 | ||
808 | /* Set nexthop pointer. */ | |
809 | if (ripng_nexthop->flag == RIPNG_NEXTHOP_ADDRESS) | |
810 | nexthop = &ripng_nexthop->address; | |
811 | else | |
812 | nexthop = &from->sin6_addr; | |
813 | ||
814 | /* Lookup RIPng routing table. */ | |
fe08ba7e | 815 | rp = agg_node_get(ripng->table, (struct prefix *)&p); |
d62a17ae | 816 | |
817 | newinfo.rp = rp; | |
818 | newinfo.nexthop = *nexthop; | |
819 | newinfo.metric = rte->metric; | |
820 | newinfo.tag = ntohs(rte->tag); | |
821 | ||
822 | /* Check to see whether there is already RIPng route on the table. */ | |
823 | if ((list = rp->info) != NULL) | |
824 | for (ALL_LIST_ELEMENTS_RO(list, node, rinfo)) { | |
825 | /* Need to compare with redistributed entry or local | |
826 | * entry */ | |
827 | if (!ripng_route_rte(rinfo)) | |
828 | break; | |
829 | ||
830 | if (IPV6_ADDR_SAME(&rinfo->from, &from->sin6_addr) | |
831 | && IPV6_ADDR_SAME(&rinfo->nexthop, nexthop)) | |
832 | break; | |
833 | ||
834 | if (!listnextnode(node)) { | |
835 | /* Not found in the list */ | |
836 | ||
837 | if (rte->metric > rinfo->metric) { | |
838 | /* New route has a greater metric. | |
839 | * Discard it. */ | |
fe08ba7e | 840 | agg_unlock_node(rp); |
d62a17ae | 841 | return; |
842 | } | |
843 | ||
844 | if (rte->metric < rinfo->metric) | |
845 | /* New route has a smaller metric. | |
846 | * Replace the ECMP list | |
847 | * with the new one in below. */ | |
848 | break; | |
849 | ||
850 | /* Metrics are same. Unless ECMP is disabled, | |
851 | * keep "rinfo" null and | |
852 | * the new route is added in the ECMP list in | |
853 | * below. */ | |
854 | if (!ripng->ecmp) | |
855 | break; | |
856 | } | |
857 | } | |
718e3744 | 858 | |
d62a17ae | 859 | if (rinfo) { |
860 | /* Redistributed route check. */ | |
861 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
862 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 863 | agg_unlock_node(rp); |
d62a17ae | 864 | return; |
865 | } | |
a94434b6 | 866 | |
d62a17ae | 867 | /* Local static route. */ |
868 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
869 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) | |
870 | || (rinfo->sub_type == RIPNG_ROUTE_DEFAULT)) | |
871 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 872 | agg_unlock_node(rp); |
d62a17ae | 873 | return; |
874 | } | |
875 | } | |
a94434b6 | 876 | |
d62a17ae | 877 | if (!rinfo) { |
878 | /* Now, check to see whether there is already an explicit route | |
879 | for the destination prefix. If there is no such route, add | |
880 | this route to the routing table, unless the metric is | |
881 | infinity (there is no point in adding a route which | |
882 | unusable). */ | |
883 | if (rte->metric != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 884 | ripng_ecmp_add(ripng, &newinfo); |
3e7a9652 | 885 | else |
fe08ba7e | 886 | agg_unlock_node(rp); |
d62a17ae | 887 | } else { |
888 | /* If there is an existing route, compare the next hop address | |
889 | to the address of the router from which the datagram came. | |
890 | If this datagram is from the same router as the existing | |
891 | route, reinitialize the timeout. */ | |
892 | same = (IN6_ARE_ADDR_EQUAL(&rinfo->from, &from->sin6_addr) | |
893 | && (rinfo->ifindex == ifp->ifindex)); | |
894 | ||
895 | /* | |
896 | * RFC 2080 - Section 2.4.2: | |
897 | * "If the new metric is the same as the old one, examine the | |
898 | * timeout | |
899 | * for the existing route. If it is at least halfway to the | |
900 | * expiration | |
901 | * point, switch to the new route. This heuristic is optional, | |
902 | * but | |
903 | * highly recommended". | |
904 | */ | |
905 | if (!ripng->ecmp && !same && rinfo->metric == rte->metric | |
906 | && rinfo->t_timeout | |
907 | && (thread_timer_remain_second(rinfo->t_timeout) | |
908 | < (ripng->timeout_time / 2))) { | |
5c84b9a5 | 909 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 910 | } |
911 | /* Next, compare the metrics. If the datagram is from the same | |
912 | router as the existing route, and the new metric is different | |
913 | than the old one; or, if the new metric is lower than the old | |
914 | one; do the following actions: */ | |
915 | else if ((same && rinfo->metric != rte->metric) | |
916 | || rte->metric < rinfo->metric) { | |
917 | if (listcount(list) == 1) { | |
918 | if (newinfo.metric != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 919 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 920 | else |
5c84b9a5 | 921 | ripng_ecmp_delete(ripng, rinfo); |
d62a17ae | 922 | } else { |
923 | if (newinfo.metric < rinfo->metric) | |
5c84b9a5 | 924 | ripng_ecmp_replace(ripng, &newinfo); |
d62a17ae | 925 | else /* newinfo.metric > rinfo->metric */ |
5c84b9a5 | 926 | ripng_ecmp_delete(ripng, rinfo); |
d62a17ae | 927 | } |
928 | } else /* same & no change */ | |
5c84b9a5 | 929 | ripng_timeout_update(ripng, rinfo); |
d62a17ae | 930 | |
931 | /* Unlock tempolary lock of the route. */ | |
fe08ba7e | 932 | agg_unlock_node(rp); |
d62a17ae | 933 | } |
718e3744 | 934 | } |
935 | ||
d62a17ae | 936 | /* Add redistributed route to RIPng table. */ |
5c84b9a5 RW |
937 | void ripng_redistribute_add(struct ripng *ripng, int type, int sub_type, |
938 | struct prefix_ipv6 *p, ifindex_t ifindex, | |
939 | struct in6_addr *nexthop, route_tag_t tag) | |
d62a17ae | 940 | { |
fe08ba7e | 941 | struct agg_node *rp; |
d62a17ae | 942 | struct ripng_info *rinfo = NULL, newinfo; |
943 | struct list *list = NULL; | |
944 | ||
945 | /* Redistribute route */ | |
946 | if (IN6_IS_ADDR_LINKLOCAL(&p->prefix)) | |
947 | return; | |
948 | if (IN6_IS_ADDR_LOOPBACK(&p->prefix)) | |
949 | return; | |
950 | ||
fe08ba7e | 951 | rp = agg_node_get(ripng->table, (struct prefix *)p); |
d62a17ae | 952 | |
953 | memset(&newinfo, 0, sizeof(struct ripng_info)); | |
954 | newinfo.type = type; | |
955 | newinfo.sub_type = sub_type; | |
956 | newinfo.ifindex = ifindex; | |
957 | newinfo.metric = 1; | |
958 | if (tag <= UINT16_MAX) /* RIPng only supports 16 bit tags */ | |
959 | newinfo.tag = tag; | |
960 | newinfo.rp = rp; | |
961 | if (nexthop && IN6_IS_ADDR_LINKLOCAL(nexthop)) | |
962 | newinfo.nexthop = *nexthop; | |
963 | ||
964 | if ((list = rp->info) != NULL && listcount(list) != 0) { | |
965 | rinfo = listgetdata(listhead(list)); | |
966 | ||
967 | if (rinfo->type == ZEBRA_ROUTE_CONNECT | |
968 | && rinfo->sub_type == RIPNG_ROUTE_INTERFACE | |
969 | && rinfo->metric != RIPNG_METRIC_INFINITY) { | |
fe08ba7e | 970 | agg_unlock_node(rp); |
d62a17ae | 971 | return; |
972 | } | |
973 | ||
974 | /* Manually configured RIPng route check. | |
975 | * They have the precedence on all the other entries. | |
976 | **/ | |
977 | if (rinfo->type == ZEBRA_ROUTE_RIPNG | |
978 | && ((rinfo->sub_type == RIPNG_ROUTE_STATIC) | |
979 | || (rinfo->sub_type == RIPNG_ROUTE_DEFAULT))) { | |
980 | if (type != ZEBRA_ROUTE_RIPNG | |
981 | || ((sub_type != RIPNG_ROUTE_STATIC) | |
982 | && (sub_type != RIPNG_ROUTE_DEFAULT))) { | |
fe08ba7e | 983 | agg_unlock_node(rp); |
d62a17ae | 984 | return; |
985 | } | |
986 | } | |
718e3744 | 987 | |
5c84b9a5 | 988 | ripng_ecmp_replace(ripng, &newinfo); |
fe08ba7e | 989 | agg_unlock_node(rp); |
d62a17ae | 990 | } else |
5c84b9a5 | 991 | ripng_ecmp_add(ripng, &newinfo); |
d62a17ae | 992 | |
993 | if (IS_RIPNG_DEBUG_EVENT) { | |
994 | if (!nexthop) | |
995 | zlog_debug( | |
e0259674 DS |
996 | "Redistribute new prefix %pFX on the interface %s", |
997 | p, ifindex2ifname(ifindex, ripng->vrf->vrf_id)); | |
d62a17ae | 998 | else |
999 | zlog_debug( | |
e0259674 DS |
1000 | "Redistribute new prefix %pFX with nexthop %s on the interface %s", |
1001 | p, inet6_ntoa(*nexthop), | |
dde7b15b | 1002 | ifindex2ifname(ifindex, ripng->vrf->vrf_id)); |
d62a17ae | 1003 | } |
718e3744 | 1004 | |
5c84b9a5 | 1005 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1006 | } |
718e3744 | 1007 | |
d62a17ae | 1008 | /* Delete redistributed route to RIPng table. */ |
5c84b9a5 RW |
1009 | void ripng_redistribute_delete(struct ripng *ripng, int type, int sub_type, |
1010 | struct prefix_ipv6 *p, ifindex_t ifindex) | |
d62a17ae | 1011 | { |
fe08ba7e | 1012 | struct agg_node *rp; |
d62a17ae | 1013 | struct ripng_info *rinfo; |
1014 | ||
1015 | if (IN6_IS_ADDR_LINKLOCAL(&p->prefix)) | |
1016 | return; | |
1017 | if (IN6_IS_ADDR_LOOPBACK(&p->prefix)) | |
1018 | return; | |
1019 | ||
fe08ba7e | 1020 | rp = agg_node_lookup(ripng->table, (struct prefix *)p); |
d62a17ae | 1021 | |
1022 | if (rp) { | |
1023 | struct list *list = rp->info; | |
1024 | ||
1025 | if (list != NULL && listcount(list) != 0) { | |
1026 | rinfo = listgetdata(listhead(list)); | |
1027 | if (rinfo != NULL && rinfo->type == type | |
1028 | && rinfo->sub_type == sub_type | |
1029 | && rinfo->ifindex == ifindex) { | |
1030 | /* Perform poisoned reverse. */ | |
1031 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1032 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, | |
1033 | ripng_garbage_collect, | |
1034 | ripng->garbage_time); | |
1035 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
1036 | ||
1037 | /* Aggregate count decrement. */ | |
1038 | ripng_aggregate_decrement(rp, rinfo); | |
1039 | ||
1040 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1041 | ||
1042 | if (IS_RIPNG_DEBUG_EVENT) | |
1043 | zlog_debug( | |
e0259674 DS |
1044 | "Poisone %pFX on the interface %s with an infinity metric [delete]", |
1045 | p, | |
dde7b15b RW |
1046 | ifindex2ifname( |
1047 | ifindex, | |
1048 | ripng->vrf->vrf_id)); | |
d62a17ae | 1049 | |
5c84b9a5 | 1050 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1051 | } |
1052 | } | |
fe08ba7e | 1053 | agg_unlock_node(rp); |
d62a17ae | 1054 | } |
718e3744 | 1055 | } |
1056 | ||
1057 | /* Withdraw redistributed route. */ | |
5c84b9a5 | 1058 | void ripng_redistribute_withdraw(struct ripng *ripng, int type) |
d62a17ae | 1059 | { |
fe08ba7e | 1060 | struct agg_node *rp; |
d62a17ae | 1061 | struct ripng_info *rinfo = NULL; |
1062 | struct list *list = NULL; | |
1063 | ||
fe08ba7e | 1064 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 1065 | if ((list = rp->info) != NULL) { |
1066 | rinfo = listgetdata(listhead(list)); | |
1067 | if ((rinfo->type == type) | |
1068 | && (rinfo->sub_type != RIPNG_ROUTE_INTERFACE)) { | |
1069 | /* Perform poisoned reverse. */ | |
1070 | rinfo->metric = RIPNG_METRIC_INFINITY; | |
1071 | RIPNG_TIMER_ON(rinfo->t_garbage_collect, | |
1072 | ripng_garbage_collect, | |
1073 | ripng->garbage_time); | |
1074 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
1075 | ||
1076 | /* Aggregate count decrement. */ | |
1077 | ripng_aggregate_decrement(rp, rinfo); | |
1078 | ||
1079 | rinfo->flags |= RIPNG_RTF_CHANGED; | |
1080 | ||
1081 | if (IS_RIPNG_DEBUG_EVENT) { | |
1082 | struct prefix_ipv6 *p = | |
26a3ffd6 DS |
1083 | (struct prefix_ipv6 *) |
1084 | agg_node_get_prefix(rp); | |
d62a17ae | 1085 | |
1086 | zlog_debug( | |
e0259674 DS |
1087 | "Poisone %pFX on the interface %s [withdraw]", |
1088 | p, | |
dde7b15b RW |
1089 | ifindex2ifname( |
1090 | rinfo->ifindex, | |
1091 | ripng->vrf->vrf_id)); | |
d62a17ae | 1092 | } |
1093 | ||
5c84b9a5 | 1094 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 1095 | } |
1096 | } | |
1097 | } | |
718e3744 | 1098 | |
d62a17ae | 1099 | /* RIP routing information. */ |
1100 | static void ripng_response_process(struct ripng_packet *packet, int size, | |
1101 | struct sockaddr_in6 *from, | |
1102 | struct interface *ifp, int hoplimit) | |
1103 | { | |
5c84b9a5 RW |
1104 | struct ripng_interface *ri = ifp->info; |
1105 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 1106 | caddr_t lim; |
1107 | struct rte *rte; | |
1108 | struct ripng_nexthop nexthop; | |
1109 | ||
1110 | /* RFC2080 2.4.2 Response Messages: | |
1111 | The Response must be ignored if it is not from the RIPng port. */ | |
1112 | if (ntohs(from->sin6_port) != RIPNG_PORT_DEFAULT) { | |
1113 | zlog_warn("RIPng packet comes from non RIPng port %d from %s", | |
1114 | ntohs(from->sin6_port), inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1115 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1116 | return; |
1117 | } | |
718e3744 | 1118 | |
d62a17ae | 1119 | /* The datagram's IPv6 source address should be checked to see |
1120 | whether the datagram is from a valid neighbor; the source of the | |
1121 | datagram must be a link-local address. */ | |
1122 | if (!IN6_IS_ADDR_LINKLOCAL(&from->sin6_addr)) { | |
1123 | zlog_warn("RIPng packet comes from non link local address %s", | |
1124 | inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1125 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1126 | return; |
1127 | } | |
a94434b6 | 1128 | |
d62a17ae | 1129 | /* It is also worth checking to see whether the response is from one |
1130 | of the router's own addresses. Interfaces on broadcast networks | |
1131 | may receive copies of their own multicasts immediately. If a | |
1132 | router processes its own output as new input, confusion is likely, | |
1133 | and such datagrams must be ignored. */ | |
1134 | if (ripng_lladdr_check(ifp, &from->sin6_addr)) { | |
1135 | zlog_warn( | |
1136 | "RIPng packet comes from my own link local address %s", | |
1137 | inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1138 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1139 | return; |
1140 | } | |
a94434b6 | 1141 | |
d62a17ae | 1142 | /* As an additional check, periodic advertisements must have their |
1143 | hop counts set to 255, and inbound, multicast packets sent from the | |
1144 | RIPng port (i.e. periodic advertisement or triggered update | |
1145 | packets) must be examined to ensure that the hop count is 255. */ | |
1146 | if (hoplimit >= 0 && hoplimit != 255) { | |
1147 | zlog_warn( | |
1148 | "RIPng packet comes with non 255 hop count %d from %s", | |
1149 | hoplimit, inet6_ntoa(from->sin6_addr)); | |
5c84b9a5 | 1150 | ripng_peer_bad_packet(ripng, from); |
d62a17ae | 1151 | return; |
1152 | } | |
718e3744 | 1153 | |
d62a17ae | 1154 | /* Update RIPng peer. */ |
5c84b9a5 | 1155 | ripng_peer_update(ripng, from, packet->version); |
a94434b6 | 1156 | |
d62a17ae | 1157 | /* Reset nexthop. */ |
1158 | memset(&nexthop, 0, sizeof(struct ripng_nexthop)); | |
1159 | nexthop.flag = RIPNG_NEXTHOP_UNSPEC; | |
718e3744 | 1160 | |
d62a17ae | 1161 | /* Set RTE pointer. */ |
1162 | rte = packet->rte; | |
718e3744 | 1163 | |
d62a17ae | 1164 | for (lim = ((caddr_t)packet) + size; (caddr_t)rte < lim; rte++) { |
1165 | /* First of all, we have to check this RTE is next hop RTE or | |
1166 | not. Next hop RTE is completely different with normal RTE so | |
1167 | we need special treatment. */ | |
1168 | if (rte->metric == RIPNG_METRIC_NEXTHOP) { | |
1169 | ripng_nexthop_rte(rte, from, &nexthop); | |
1170 | continue; | |
1171 | } | |
718e3744 | 1172 | |
d62a17ae | 1173 | /* RTE information validation. */ |
1174 | ||
1175 | /* - is the destination prefix valid (e.g., not a multicast | |
1176 | prefix and not a link-local address) A link-local address | |
1177 | should never be present in an RTE. */ | |
1178 | if (IN6_IS_ADDR_MULTICAST(&rte->addr)) { | |
1179 | zlog_warn( | |
1180 | "Destination prefix is a multicast address %s/%d [%d]", | |
1181 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1182 | rte->metric); | |
5c84b9a5 | 1183 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1184 | continue; |
1185 | } | |
1186 | if (IN6_IS_ADDR_LINKLOCAL(&rte->addr)) { | |
1187 | zlog_warn( | |
1188 | "Destination prefix is a link-local 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_LOOPBACK(&rte->addr)) { | |
1195 | zlog_warn( | |
1196 | "Destination prefix is a loopback 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 | } | |
718e3744 | 1202 | |
d62a17ae | 1203 | /* - is the prefix length valid (i.e., between 0 and 128, |
1204 | inclusive) */ | |
1205 | if (rte->prefixlen > 128) { | |
1206 | zlog_warn("Invalid prefix length %s/%d from %s%%%s", | |
1207 | inet6_ntoa(rte->addr), rte->prefixlen, | |
1208 | inet6_ntoa(from->sin6_addr), ifp->name); | |
5c84b9a5 | 1209 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1210 | continue; |
1211 | } | |
718e3744 | 1212 | |
d62a17ae | 1213 | /* - is the metric valid (i.e., between 1 and 16, inclusive) */ |
1214 | if (!(rte->metric >= 1 && rte->metric <= 16)) { | |
1215 | zlog_warn("Invalid metric %d from %s%%%s", rte->metric, | |
1216 | inet6_ntoa(from->sin6_addr), ifp->name); | |
5c84b9a5 | 1217 | ripng_peer_bad_route(ripng, from); |
d62a17ae | 1218 | continue; |
1219 | } | |
718e3744 | 1220 | |
d62a17ae | 1221 | /* Vincent: XXX Should we compute the direclty reachable nexthop |
1222 | * for our RIPng network ? | |
1223 | **/ | |
718e3744 | 1224 | |
d62a17ae | 1225 | /* Routing table updates. */ |
1226 | ripng_route_process(rte, from, &nexthop, ifp); | |
1227 | } | |
718e3744 | 1228 | } |
1229 | ||
1230 | /* Response to request message. */ | |
d62a17ae | 1231 | static void ripng_request_process(struct ripng_packet *packet, int size, |
1232 | struct sockaddr_in6 *from, | |
1233 | struct interface *ifp) | |
1234 | { | |
5c84b9a5 | 1235 | struct ripng *ripng; |
d62a17ae | 1236 | caddr_t lim; |
1237 | struct rte *rte; | |
1238 | struct prefix_ipv6 p; | |
fe08ba7e | 1239 | struct agg_node *rp; |
d62a17ae | 1240 | struct ripng_info *rinfo; |
1241 | struct ripng_interface *ri; | |
1242 | ||
1243 | /* Does not reponse to the requests on the loopback interfaces */ | |
1244 | if (if_is_loopback(ifp)) | |
1245 | return; | |
1246 | ||
1247 | /* Check RIPng process is enabled on this interface. */ | |
1248 | ri = ifp->info; | |
1249 | if (!ri->running) | |
1250 | return; | |
5c84b9a5 | 1251 | ripng = ri->ripng; |
d62a17ae | 1252 | |
1253 | /* When passive interface is specified, suppress responses */ | |
1254 | if (ri->passive) | |
1255 | return; | |
1256 | ||
1257 | /* RIPng peer update. */ | |
5c84b9a5 | 1258 | ripng_peer_update(ripng, from, packet->version); |
d62a17ae | 1259 | |
1260 | lim = ((caddr_t)packet) + size; | |
1261 | rte = packet->rte; | |
1262 | ||
1263 | /* The Request is processed entry by entry. If there are no | |
1264 | entries, no response is given. */ | |
1265 | if (lim == (caddr_t)rte) | |
1266 | return; | |
1267 | ||
1268 | /* There is one special case. If there is exactly one entry in the | |
1269 | request, and it has a destination prefix of zero, a prefix length | |
1270 | of zero, and a metric of infinity (i.e., 16), then this is a | |
1271 | request to send the entire routing table. In that case, a call | |
1272 | is made to the output process to send the routing table to the | |
1273 | requesting address/port. */ | |
1274 | if (lim == ((caddr_t)(rte + 1)) && IN6_IS_ADDR_UNSPECIFIED(&rte->addr) | |
1275 | && rte->prefixlen == 0 && rte->metric == RIPNG_METRIC_INFINITY) { | |
1276 | /* All route with split horizon */ | |
1277 | ripng_output_process(ifp, from, ripng_all_route); | |
1278 | } else { | |
1279 | /* Except for this special case, processing is quite simple. | |
1280 | Examine the list of RTEs in the Request one by one. For each | |
1281 | entry, look up the destination in the router's routing | |
1282 | database and, if there is a route, put that route's metric in | |
1283 | the metric field of the RTE. If there is no explicit route | |
1284 | to the specified destination, put infinity in the metric | |
1285 | field. Once all the entries have been filled in, change the | |
1286 | command from Request to Response and send the datagram back | |
1287 | to the requestor. */ | |
1288 | memset(&p, 0, sizeof(struct prefix_ipv6)); | |
1289 | p.family = AF_INET6; | |
1290 | ||
1291 | for (; ((caddr_t)rte) < lim; rte++) { | |
1292 | p.prefix = rte->addr; | |
1293 | p.prefixlen = rte->prefixlen; | |
1294 | apply_mask_ipv6(&p); | |
1295 | ||
fe08ba7e | 1296 | rp = agg_node_lookup(ripng->table, (struct prefix *)&p); |
d62a17ae | 1297 | |
1298 | if (rp) { | |
1299 | rinfo = listgetdata( | |
1300 | listhead((struct list *)rp->info)); | |
1301 | rte->metric = rinfo->metric; | |
fe08ba7e | 1302 | agg_unlock_node(rp); |
d62a17ae | 1303 | } else |
1304 | rte->metric = RIPNG_METRIC_INFINITY; | |
1305 | } | |
1306 | packet->command = RIPNG_RESPONSE; | |
1307 | ||
1308 | ripng_send_packet((caddr_t)packet, size, from, ifp); | |
1309 | } | |
718e3744 | 1310 | } |
1311 | ||
1312 | /* First entry point of reading RIPng packet. */ | |
d62a17ae | 1313 | static int ripng_read(struct thread *thread) |
1314 | { | |
5c84b9a5 | 1315 | struct ripng *ripng = THREAD_ARG(thread); |
d62a17ae | 1316 | int len; |
1317 | int sock; | |
1318 | struct sockaddr_in6 from; | |
1319 | struct ripng_packet *packet; | |
1320 | ifindex_t ifindex = 0; | |
1321 | struct interface *ifp; | |
1322 | int hoplimit = -1; | |
1323 | ||
1324 | /* Check ripng is active and alive. */ | |
1325 | assert(ripng != NULL); | |
1326 | assert(ripng->sock >= 0); | |
1327 | ||
1328 | /* Fetch thread data and set read pointer to empty for event | |
1329 | managing. `sock' sould be same as ripng->sock. */ | |
1330 | sock = THREAD_FD(thread); | |
1331 | ripng->t_read = NULL; | |
1332 | ||
1333 | /* Add myself to the next event. */ | |
5c84b9a5 | 1334 | ripng_event(ripng, RIPNG_READ, sock); |
d62a17ae | 1335 | |
1336 | /* Read RIPng packet. */ | |
1337 | len = ripng_recv_packet(sock, STREAM_DATA(ripng->ibuf), | |
1338 | STREAM_SIZE(ripng->ibuf), &from, &ifindex, | |
1339 | &hoplimit); | |
1340 | if (len < 0) { | |
dde7b15b RW |
1341 | zlog_warn("RIPng recvfrom failed (VRF %s): %s.", |
1342 | ripng->vrf_name, safe_strerror(errno)); | |
d62a17ae | 1343 | return len; |
1344 | } | |
718e3744 | 1345 | |
d62a17ae | 1346 | /* Check RTE boundary. RTE size (Packet length - RIPng header size |
1347 | (4)) must be multiple size of one RTE size (20). */ | |
1348 | if (((len - 4) % 20) != 0) { | |
dde7b15b RW |
1349 | zlog_warn("RIPng invalid packet size %d from %s (VRF %s)", len, |
1350 | inet6_ntoa(from.sin6_addr), ripng->vrf_name); | |
5c84b9a5 | 1351 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1352 | return 0; |
1353 | } | |
718e3744 | 1354 | |
d62a17ae | 1355 | packet = (struct ripng_packet *)STREAM_DATA(ripng->ibuf); |
dde7b15b | 1356 | ifp = if_lookup_by_index(ifindex, ripng->vrf->vrf_id); |
718e3744 | 1357 | |
d62a17ae | 1358 | /* RIPng packet received. */ |
1359 | if (IS_RIPNG_DEBUG_EVENT) | |
dde7b15b RW |
1360 | zlog_debug( |
1361 | "RIPng packet received from %s port %d on %s (VRF %s)", | |
1362 | inet6_ntoa(from.sin6_addr), ntohs(from.sin6_port), | |
1363 | ifp ? ifp->name : "unknown", ripng->vrf_name); | |
718e3744 | 1364 | |
d62a17ae | 1365 | /* Logging before packet checking. */ |
1366 | if (IS_RIPNG_DEBUG_RECV) | |
1367 | ripng_packet_dump(packet, len, "RECV"); | |
718e3744 | 1368 | |
d62a17ae | 1369 | /* Packet comes from unknown interface. */ |
1370 | if (ifp == NULL) { | |
dde7b15b RW |
1371 | zlog_warn( |
1372 | "RIPng packet comes from unknown interface %d (VRF %s)", | |
1373 | ifindex, ripng->vrf_name); | |
d62a17ae | 1374 | return 0; |
1375 | } | |
718e3744 | 1376 | |
d62a17ae | 1377 | /* Packet version mismatch checking. */ |
1378 | if (packet->version != ripng->version) { | |
1379 | zlog_warn( | |
dde7b15b RW |
1380 | "RIPng packet version %d doesn't fit to my version %d (VRF %s)", |
1381 | packet->version, ripng->version, ripng->vrf_name); | |
5c84b9a5 | 1382 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1383 | return 0; |
1384 | } | |
718e3744 | 1385 | |
d62a17ae | 1386 | /* Process RIPng packet. */ |
1387 | switch (packet->command) { | |
1388 | case RIPNG_REQUEST: | |
1389 | ripng_request_process(packet, len, &from, ifp); | |
1390 | break; | |
1391 | case RIPNG_RESPONSE: | |
1392 | ripng_response_process(packet, len, &from, ifp, hoplimit); | |
1393 | break; | |
1394 | default: | |
dde7b15b RW |
1395 | zlog_warn("Invalid RIPng command %d (VRF %s)", packet->command, |
1396 | ripng->vrf_name); | |
5c84b9a5 | 1397 | ripng_peer_bad_packet(ripng, &from); |
d62a17ae | 1398 | break; |
1399 | } | |
1400 | return 0; | |
718e3744 | 1401 | } |
1402 | ||
1403 | /* Walk down the RIPng routing table then clear changed flag. */ | |
5c84b9a5 | 1404 | static void ripng_clear_changed_flag(struct ripng *ripng) |
718e3744 | 1405 | { |
fe08ba7e | 1406 | struct agg_node *rp; |
d62a17ae | 1407 | struct ripng_info *rinfo = NULL; |
1408 | struct list *list = NULL; | |
1409 | struct listnode *listnode = NULL; | |
718e3744 | 1410 | |
fe08ba7e | 1411 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 1412 | if ((list = rp->info) != NULL) |
1413 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
1414 | UNSET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
1415 | /* This flag can be set only on the first entry. | |
1416 | */ | |
1417 | break; | |
1418 | } | |
718e3744 | 1419 | } |
1420 | ||
1421 | /* Regular update of RIPng route. Send all routing formation to RIPng | |
1422 | enabled interface. */ | |
d62a17ae | 1423 | static int ripng_update(struct thread *t) |
718e3744 | 1424 | { |
5c84b9a5 | 1425 | struct ripng *ripng = THREAD_ARG(t); |
d62a17ae | 1426 | struct interface *ifp; |
1427 | struct ripng_interface *ri; | |
718e3744 | 1428 | |
d62a17ae | 1429 | /* Clear update timer thread. */ |
1430 | ripng->t_update = NULL; | |
718e3744 | 1431 | |
d62a17ae | 1432 | /* Logging update event. */ |
1433 | if (IS_RIPNG_DEBUG_EVENT) | |
1434 | zlog_debug("RIPng update timer expired!"); | |
718e3744 | 1435 | |
d62a17ae | 1436 | /* Supply routes to each interface. */ |
dde7b15b | 1437 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 1438 | ri = ifp->info; |
718e3744 | 1439 | |
d62a17ae | 1440 | if (if_is_loopback(ifp) || !if_is_up(ifp)) |
1441 | continue; | |
718e3744 | 1442 | |
d62a17ae | 1443 | if (!ri->running) |
1444 | continue; | |
718e3744 | 1445 | |
d62a17ae | 1446 | /* When passive interface is specified, suppress announce to the |
1447 | interface. */ | |
1448 | if (ri->passive) | |
1449 | continue; | |
718e3744 | 1450 | |
1e20238a | 1451 | #ifdef RIPNG_ADVANCED |
d62a17ae | 1452 | if (ri->ri_send == RIPNG_SEND_OFF) { |
1453 | if (IS_RIPNG_DEBUG_EVENT) | |
1454 | zlog_debug( | |
1455 | "[Event] RIPng send to if %d is suppressed by config", | |
1456 | ifp->ifindex); | |
1457 | continue; | |
1458 | } | |
718e3744 | 1459 | #endif /* RIPNG_ADVANCED */ |
1460 | ||
d62a17ae | 1461 | ripng_output_process(ifp, NULL, ripng_all_route); |
1462 | } | |
718e3744 | 1463 | |
d62a17ae | 1464 | /* Triggered updates may be suppressed if a regular update is due by |
1465 | the time the triggered update would be sent. */ | |
b3d6bc6e | 1466 | thread_cancel(&ripng->t_triggered_interval); |
d62a17ae | 1467 | ripng->trigger = 0; |
718e3744 | 1468 | |
d62a17ae | 1469 | /* Reset flush event. */ |
5c84b9a5 | 1470 | ripng_event(ripng, RIPNG_UPDATE_EVENT, 0); |
718e3744 | 1471 | |
d62a17ae | 1472 | return 0; |
718e3744 | 1473 | } |
1474 | ||
1475 | /* Triggered update interval timer. */ | |
d62a17ae | 1476 | static int ripng_triggered_interval(struct thread *t) |
718e3744 | 1477 | { |
5c84b9a5 RW |
1478 | struct ripng *ripng = THREAD_ARG(t); |
1479 | ||
d62a17ae | 1480 | ripng->t_triggered_interval = NULL; |
718e3744 | 1481 | |
d62a17ae | 1482 | if (ripng->trigger) { |
1483 | ripng->trigger = 0; | |
1484 | ripng_triggered_update(t); | |
1485 | } | |
1486 | return 0; | |
1487 | } | |
718e3744 | 1488 | |
1489 | /* Execute triggered update. */ | |
d62a17ae | 1490 | int ripng_triggered_update(struct thread *t) |
718e3744 | 1491 | { |
5c84b9a5 | 1492 | struct ripng *ripng = THREAD_ARG(t); |
d62a17ae | 1493 | struct interface *ifp; |
1494 | struct ripng_interface *ri; | |
1495 | int interval; | |
718e3744 | 1496 | |
d62a17ae | 1497 | ripng->t_triggered_update = NULL; |
718e3744 | 1498 | |
d62a17ae | 1499 | /* Cancel interval timer. */ |
b3d6bc6e | 1500 | thread_cancel(&ripng->t_triggered_interval); |
d62a17ae | 1501 | ripng->trigger = 0; |
718e3744 | 1502 | |
d62a17ae | 1503 | /* Logging triggered update. */ |
1504 | if (IS_RIPNG_DEBUG_EVENT) | |
1505 | zlog_debug("RIPng triggered update!"); | |
718e3744 | 1506 | |
d62a17ae | 1507 | /* Split Horizon processing is done when generating triggered |
1508 | updates as well as normal updates (see section 2.6). */ | |
dde7b15b | 1509 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 1510 | ri = ifp->info; |
718e3744 | 1511 | |
d62a17ae | 1512 | if (if_is_loopback(ifp) || !if_is_up(ifp)) |
1513 | continue; | |
718e3744 | 1514 | |
d62a17ae | 1515 | if (!ri->running) |
1516 | continue; | |
718e3744 | 1517 | |
d62a17ae | 1518 | /* When passive interface is specified, suppress announce to the |
1519 | interface. */ | |
1520 | if (ri->passive) | |
1521 | continue; | |
718e3744 | 1522 | |
d62a17ae | 1523 | ripng_output_process(ifp, NULL, ripng_changed_route); |
1524 | } | |
718e3744 | 1525 | |
d62a17ae | 1526 | /* Once all of the triggered updates have been generated, the route |
1527 | change flags should be cleared. */ | |
5c84b9a5 | 1528 | ripng_clear_changed_flag(ripng); |
718e3744 | 1529 | |
d62a17ae | 1530 | /* After a triggered update is sent, a timer should be set for a |
1531 | random interval between 1 and 5 seconds. If other changes that | |
1532 | would trigger updates occur before the timer expires, a single | |
1533 | update is triggered when the timer expires. */ | |
5920b3eb | 1534 | interval = (frr_weak_random() % 5) + 1; |
718e3744 | 1535 | |
d62a17ae | 1536 | ripng->t_triggered_interval = NULL; |
5c84b9a5 | 1537 | thread_add_timer(master, ripng_triggered_interval, ripng, interval, |
d62a17ae | 1538 | &ripng->t_triggered_interval); |
718e3744 | 1539 | |
d62a17ae | 1540 | return 0; |
718e3744 | 1541 | } |
1542 | ||
1543 | /* Write routing table entry to the stream and return next index of | |
1544 | the routing table entry in the stream. */ | |
d62a17ae | 1545 | int ripng_write_rte(int num, struct stream *s, struct prefix_ipv6 *p, |
d7c0a89a | 1546 | struct in6_addr *nexthop, uint16_t tag, uint8_t metric) |
d62a17ae | 1547 | { |
1548 | /* RIPng packet header. */ | |
1549 | if (num == 0) { | |
1550 | stream_putc(s, RIPNG_RESPONSE); | |
1551 | stream_putc(s, RIPNG_V1); | |
1552 | stream_putw(s, 0); | |
1553 | } | |
718e3744 | 1554 | |
d62a17ae | 1555 | /* Write routing table entry. */ |
b575a12c A |
1556 | if (!nexthop) { |
1557 | assert(p); | |
d7c0a89a | 1558 | stream_write(s, (uint8_t *)&p->prefix, sizeof(struct in6_addr)); |
b575a12c | 1559 | } else |
d7c0a89a | 1560 | stream_write(s, (uint8_t *)nexthop, sizeof(struct in6_addr)); |
d62a17ae | 1561 | stream_putw(s, tag); |
1562 | if (p) | |
1563 | stream_putc(s, p->prefixlen); | |
1564 | else | |
1565 | stream_putc(s, 0); | |
1566 | stream_putc(s, metric); | |
718e3744 | 1567 | |
d62a17ae | 1568 | return ++num; |
718e3744 | 1569 | } |
1570 | ||
1571 | /* Send RESPONSE message to specified destination. */ | |
d62a17ae | 1572 | void ripng_output_process(struct interface *ifp, struct sockaddr_in6 *to, |
1573 | int route_type) | |
1574 | { | |
5c84b9a5 | 1575 | struct ripng *ripng; |
d62a17ae | 1576 | int ret; |
fe08ba7e | 1577 | struct agg_node *rp; |
d62a17ae | 1578 | struct ripng_info *rinfo; |
1579 | struct ripng_interface *ri; | |
1580 | struct ripng_aggregate *aggregate; | |
1581 | struct prefix_ipv6 *p; | |
1582 | struct list *ripng_rte_list; | |
1583 | struct list *list = NULL; | |
1584 | struct listnode *listnode = NULL; | |
1585 | ||
1586 | if (IS_RIPNG_DEBUG_EVENT) { | |
1587 | if (to) | |
1588 | zlog_debug("RIPng update routes to neighbor %s", | |
1589 | inet6_ntoa(to->sin6_addr)); | |
1590 | else | |
1591 | zlog_debug("RIPng update routes on interface %s", | |
1592 | ifp->name); | |
1593 | } | |
a94434b6 | 1594 | |
5c84b9a5 | 1595 | /* Get RIPng interface and instance. */ |
d62a17ae | 1596 | ri = ifp->info; |
5c84b9a5 | 1597 | ripng = ri->ripng; |
d62a17ae | 1598 | |
1599 | ripng_rte_list = ripng_rte_new(); | |
1600 | ||
fe08ba7e | 1601 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { |
d62a17ae | 1602 | if ((list = rp->info) != NULL |
1603 | && (rinfo = listgetdata(listhead(list))) != NULL | |
1604 | && rinfo->suppress == 0) { | |
1605 | /* If no route-map are applied, the RTE will be these | |
1606 | * following | |
0437e105 | 1607 | * information. |
d62a17ae | 1608 | */ |
26a3ffd6 | 1609 | p = (struct prefix_ipv6 *)agg_node_get_prefix(rp); |
d62a17ae | 1610 | rinfo->metric_out = rinfo->metric; |
1611 | rinfo->tag_out = rinfo->tag; | |
1612 | memset(&rinfo->nexthop_out, 0, | |
1613 | sizeof(rinfo->nexthop_out)); | |
1614 | /* In order to avoid some local loops, | |
1615 | * if the RIPng route has a nexthop via this interface, | |
1616 | * keep the nexthop, | |
1617 | * otherwise set it to 0. The nexthop should not be | |
1618 | * propagated | |
1619 | * beyond the local broadcast/multicast area in order | |
1620 | * to avoid an IGP multi-level recursive look-up. | |
1621 | */ | |
1622 | if (rinfo->ifindex == ifp->ifindex) | |
1623 | rinfo->nexthop_out = rinfo->nexthop; | |
1624 | ||
1625 | /* Apply output filters. */ | |
1626 | ret = ripng_filter(RIPNG_FILTER_OUT, p, ri); | |
1627 | if (ret < 0) | |
1628 | continue; | |
1629 | ||
1630 | /* Changed route only output. */ | |
1631 | if (route_type == ripng_changed_route | |
1632 | && (!(rinfo->flags & RIPNG_RTF_CHANGED))) | |
1633 | continue; | |
1634 | ||
1635 | /* Split horizon. */ | |
1636 | if (ri->split_horizon == RIPNG_SPLIT_HORIZON) { | |
1637 | /* We perform split horizon for RIPng routes. */ | |
1638 | int suppress = 0; | |
1639 | struct ripng_info *tmp_rinfo = NULL; | |
1640 | ||
1641 | for (ALL_LIST_ELEMENTS_RO(list, listnode, | |
1642 | tmp_rinfo)) | |
1643 | if (tmp_rinfo->type == ZEBRA_ROUTE_RIPNG | |
1644 | && tmp_rinfo->ifindex | |
1645 | == ifp->ifindex) { | |
1646 | suppress = 1; | |
1647 | break; | |
1648 | } | |
1649 | if (suppress) | |
1650 | continue; | |
1651 | } | |
1652 | ||
1653 | /* Preparation for route-map. */ | |
1654 | rinfo->metric_set = 0; | |
1655 | /* nexthop_out, | |
1656 | * metric_out | |
1657 | * and tag_out are already initialized. | |
1658 | */ | |
1659 | ||
1660 | /* Interface route-map */ | |
1661 | if (ri->routemap[RIPNG_FILTER_OUT]) { | |
d62a17ae | 1662 | ret = route_map_apply( |
1663 | ri->routemap[RIPNG_FILTER_OUT], | |
1664 | (struct prefix *)p, RMAP_RIPNG, rinfo); | |
1665 | ||
1666 | if (ret == RMAP_DENYMATCH) { | |
1667 | if (IS_RIPNG_DEBUG_PACKET) | |
1668 | zlog_debug( | |
e0259674 DS |
1669 | "RIPng %pFX is filtered by route-map out", |
1670 | p); | |
d62a17ae | 1671 | continue; |
1672 | } | |
1673 | } | |
1674 | ||
1675 | /* Redistribute route-map. */ | |
f9120f71 RW |
1676 | if (ripng->redist[rinfo->type].route_map.name) { |
1677 | ret = route_map_apply(ripng->redist[rinfo->type] | |
1678 | .route_map.map, | |
1679 | (struct prefix *)p, | |
1680 | RMAP_RIPNG, rinfo); | |
d62a17ae | 1681 | |
1682 | if (ret == RMAP_DENYMATCH) { | |
1683 | if (IS_RIPNG_DEBUG_PACKET) | |
1684 | zlog_debug( | |
e0259674 DS |
1685 | "RIPng %pFX is filtered by route-map", |
1686 | p); | |
d62a17ae | 1687 | continue; |
1688 | } | |
1689 | } | |
1690 | ||
1691 | /* When the route-map does not set metric. */ | |
1692 | if (!rinfo->metric_set) { | |
1693 | /* If the redistribute metric is set. */ | |
f9120f71 | 1694 | if (ripng->redist[rinfo->type].metric_config |
d62a17ae | 1695 | && rinfo->metric != RIPNG_METRIC_INFINITY) { |
1696 | rinfo->metric_out = | |
f9120f71 | 1697 | ripng->redist[rinfo->type] |
d62a17ae | 1698 | .metric; |
1699 | } else { | |
1700 | /* If the route is not connected or | |
1701 | localy generated | |
1702 | one, use default-metric value */ | |
1703 | if (rinfo->type != ZEBRA_ROUTE_RIPNG | |
1704 | && rinfo->type | |
1705 | != ZEBRA_ROUTE_CONNECT | |
1706 | && rinfo->metric | |
1707 | != RIPNG_METRIC_INFINITY) | |
1708 | rinfo->metric_out = | |
1709 | ripng->default_metric; | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | /* Apply offset-list */ | |
1714 | if (rinfo->metric_out != RIPNG_METRIC_INFINITY) | |
5c84b9a5 | 1715 | ripng_offset_list_apply_out(ripng, p, ifp, |
d62a17ae | 1716 | &rinfo->metric_out); |
1717 | ||
1718 | if (rinfo->metric_out > RIPNG_METRIC_INFINITY) | |
1719 | rinfo->metric_out = RIPNG_METRIC_INFINITY; | |
1720 | ||
1721 | /* Perform split-horizon with poisoned reverse | |
1722 | * for RIPng routes. | |
1723 | **/ | |
1724 | if (ri->split_horizon | |
1725 | == RIPNG_SPLIT_HORIZON_POISONED_REVERSE) { | |
1726 | struct ripng_info *tmp_rinfo = NULL; | |
1727 | ||
1728 | for (ALL_LIST_ELEMENTS_RO(list, listnode, | |
1729 | tmp_rinfo)) | |
1730 | if ((tmp_rinfo->type | |
1731 | == ZEBRA_ROUTE_RIPNG) | |
1732 | && tmp_rinfo->ifindex | |
1733 | == ifp->ifindex) | |
1734 | rinfo->metric_out = | |
1735 | RIPNG_METRIC_INFINITY; | |
1736 | } | |
1737 | ||
1738 | /* Add RTE to the list */ | |
1739 | ripng_rte_add(ripng_rte_list, p, rinfo, NULL); | |
718e3744 | 1740 | } |
a94434b6 | 1741 | |
d62a17ae | 1742 | /* Process the aggregated RTE entry */ |
1743 | if ((aggregate = rp->aggregate) != NULL && aggregate->count > 0 | |
1744 | && aggregate->suppress == 0) { | |
1745 | /* If no route-map are applied, the RTE will be these | |
1746 | * following | |
0437e105 | 1747 | * information. |
d62a17ae | 1748 | */ |
26a3ffd6 | 1749 | p = (struct prefix_ipv6 *)agg_node_get_prefix(rp); |
d62a17ae | 1750 | aggregate->metric_set = 0; |
1751 | aggregate->metric_out = aggregate->metric; | |
1752 | aggregate->tag_out = aggregate->tag; | |
1753 | memset(&aggregate->nexthop_out, 0, | |
1754 | sizeof(aggregate->nexthop_out)); | |
1755 | ||
1756 | /* Apply output filters.*/ | |
1757 | ret = ripng_filter(RIPNG_FILTER_OUT, p, ri); | |
1758 | if (ret < 0) | |
1759 | continue; | |
1760 | ||
1761 | /* Interface route-map */ | |
1762 | if (ri->routemap[RIPNG_FILTER_OUT]) { | |
d62a17ae | 1763 | struct ripng_info newinfo; |
1764 | ||
1765 | /* let's cast the aggregate structure to | |
1766 | * ripng_info */ | |
1767 | memset(&newinfo, 0, sizeof(struct ripng_info)); | |
1768 | /* the nexthop is :: */ | |
1769 | newinfo.metric = aggregate->metric; | |
1770 | newinfo.metric_out = aggregate->metric_out; | |
1771 | newinfo.tag = aggregate->tag; | |
1772 | newinfo.tag_out = aggregate->tag_out; | |
1773 | ||
1774 | ret = route_map_apply( | |
1775 | ri->routemap[RIPNG_FILTER_OUT], | |
1776 | (struct prefix *)p, RMAP_RIPNG, | |
1777 | &newinfo); | |
1778 | ||
1779 | if (ret == RMAP_DENYMATCH) { | |
1780 | if (IS_RIPNG_DEBUG_PACKET) | |
1781 | zlog_debug( | |
e0259674 DS |
1782 | "RIPng %pFX is filtered by route-map out", |
1783 | p); | |
d62a17ae | 1784 | continue; |
1785 | } | |
1786 | ||
1787 | aggregate->metric_out = newinfo.metric_out; | |
1788 | aggregate->tag_out = newinfo.tag_out; | |
1789 | if (IN6_IS_ADDR_LINKLOCAL(&newinfo.nexthop_out)) | |
1790 | aggregate->nexthop_out = | |
1791 | newinfo.nexthop_out; | |
1792 | } | |
1793 | ||
1794 | /* There is no redistribute routemap for the aggregated | |
1795 | * RTE */ | |
1796 | ||
1797 | /* Changed route only output. */ | |
1798 | /* XXX, vincent, in order to increase time convergence, | |
1799 | * it should be announced if a child has changed. | |
1800 | */ | |
1801 | if (route_type == ripng_changed_route) | |
1802 | continue; | |
1803 | ||
1804 | /* Apply offset-list */ | |
1805 | if (aggregate->metric_out != RIPNG_METRIC_INFINITY) | |
1806 | ripng_offset_list_apply_out( | |
5c84b9a5 | 1807 | ripng, p, ifp, &aggregate->metric_out); |
d62a17ae | 1808 | |
1809 | if (aggregate->metric_out > RIPNG_METRIC_INFINITY) | |
1810 | aggregate->metric_out = RIPNG_METRIC_INFINITY; | |
1811 | ||
1812 | /* Add RTE to the list */ | |
1813 | ripng_rte_add(ripng_rte_list, p, NULL, aggregate); | |
1814 | } | |
718e3744 | 1815 | } |
1816 | ||
d62a17ae | 1817 | /* Flush the list */ |
1818 | ripng_rte_send(ripng_rte_list, ifp, to); | |
1819 | ripng_rte_free(ripng_rte_list); | |
718e3744 | 1820 | } |
1821 | ||
5c84b9a5 RW |
1822 | struct ripng *ripng_lookup_by_vrf_id(vrf_id_t vrf_id) |
1823 | { | |
1824 | struct vrf *vrf; | |
1825 | ||
1826 | vrf = vrf_lookup_by_id(vrf_id); | |
1827 | if (!vrf) | |
1828 | return NULL; | |
1829 | ||
1830 | return vrf->info; | |
1831 | } | |
1832 | ||
dde7b15b RW |
1833 | struct ripng *ripng_lookup_by_vrf_name(const char *vrf_name) |
1834 | { | |
1835 | struct ripng ripng; | |
1836 | ||
1837 | ripng.vrf_name = (char *)vrf_name; | |
1838 | ||
1839 | return RB_FIND(ripng_instance_head, &ripng_instances, &ripng); | |
1840 | } | |
1841 | ||
718e3744 | 1842 | /* Create new RIPng instance and set it to global variable. */ |
dde7b15b | 1843 | struct ripng *ripng_create(const char *vrf_name, struct vrf *vrf, int socket) |
718e3744 | 1844 | { |
5c84b9a5 | 1845 | struct ripng *ripng; |
718e3744 | 1846 | |
d62a17ae | 1847 | /* Allocaste RIPng instance. */ |
1848 | ripng = XCALLOC(MTYPE_RIPNG, sizeof(struct ripng)); | |
dde7b15b | 1849 | ripng->vrf_name = XSTRDUP(MTYPE_RIPNG_VRF_NAME, vrf_name); |
718e3744 | 1850 | |
d62a17ae | 1851 | /* Default version and timer values. */ |
1852 | ripng->version = RIPNG_V1; | |
9a12e9e5 RW |
1853 | ripng->update_time = yang_get_default_uint32( |
1854 | "%s/timers/update-interval", RIPNG_INSTANCE); | |
1855 | ripng->timeout_time = yang_get_default_uint32( | |
1856 | "%s/timers/holddown-interval", RIPNG_INSTANCE); | |
1857 | ripng->garbage_time = yang_get_default_uint32( | |
1858 | "%s/timers/flush-interval", RIPNG_INSTANCE); | |
1859 | ripng->default_metric = | |
1860 | yang_get_default_uint8("%s/default-metric", RIPNG_INSTANCE); | |
1861 | ripng->ecmp = yang_get_default_bool("%s/allow-ecmp", RIPNG_INSTANCE); | |
d62a17ae | 1862 | |
1863 | /* Make buffer. */ | |
1864 | ripng->ibuf = stream_new(RIPNG_MAX_PACKET_SIZE * 5); | |
1865 | ripng->obuf = stream_new(RIPNG_MAX_PACKET_SIZE); | |
1866 | ||
b0ba762f | 1867 | /* Initialize RIPng data structures. */ |
fe08ba7e | 1868 | ripng->table = agg_table_init(); |
5c84b9a5 | 1869 | agg_set_table_info(ripng->table, ripng); |
ecece94c RW |
1870 | ripng->peer_list = list_new(); |
1871 | ripng->peer_list->cmp = (int (*)(void *, void *))ripng_peer_list_cmp; | |
56bf1cb2 | 1872 | ripng->peer_list->del = ripng_peer_list_del; |
b0ba762f | 1873 | ripng->enable_if = vector_init(1); |
29b94d58 | 1874 | ripng->enable_network = agg_table_init(); |
0c32404f | 1875 | ripng->passive_interface = vector_init(1); |
26c6be93 RW |
1876 | ripng->offset_list_master = list_new(); |
1877 | ripng->offset_list_master->cmp = | |
1878 | (int (*)(void *, void *))offset_list_cmp; | |
1879 | ripng->offset_list_master->del = | |
6c4c3561 | 1880 | (void (*)(void *))ripng_offset_list_free; |
dde7b15b | 1881 | ripng->distribute_ctx = distribute_list_ctx_create(vrf); |
03a38493 PG |
1882 | distribute_list_add_hook(ripng->distribute_ctx, |
1883 | ripng_distribute_update); | |
1884 | distribute_list_delete_hook(ripng->distribute_ctx, | |
1885 | ripng_distribute_update); | |
718e3744 | 1886 | |
4b23867c | 1887 | /* if rmap install. */ |
8f88441d | 1888 | ripng->if_rmap_ctx = if_rmap_ctx_create(vrf_name); |
4b23867c PG |
1889 | if_rmap_hook_add(ripng->if_rmap_ctx, ripng_if_rmap_update); |
1890 | if_rmap_hook_delete(ripng->if_rmap_ctx, ripng_if_rmap_update); | |
5c84b9a5 | 1891 | |
dde7b15b RW |
1892 | /* Enable the routing instance if possible. */ |
1893 | if (vrf && vrf_is_enabled(vrf)) | |
1894 | ripng_instance_enable(ripng, vrf, socket); | |
1895 | else { | |
1896 | ripng->vrf = NULL; | |
1897 | ripng->sock = -1; | |
5c84b9a5 RW |
1898 | } |
1899 | ||
dde7b15b RW |
1900 | RB_INSERT(ripng_instance_head, &ripng_instances, ripng); |
1901 | ||
5c84b9a5 | 1902 | return ripng; |
718e3744 | 1903 | } |
1904 | ||
a94434b6 | 1905 | /* Send RIPng request to the interface. */ |
d62a17ae | 1906 | int ripng_request(struct interface *ifp) |
718e3744 | 1907 | { |
d62a17ae | 1908 | struct rte *rte; |
1909 | struct ripng_packet ripng_packet; | |
718e3744 | 1910 | |
d62a17ae | 1911 | /* In default ripd doesn't send RIP_REQUEST to the loopback interface. |
1912 | */ | |
1913 | if (if_is_loopback(ifp)) | |
1914 | return 0; | |
a94434b6 | 1915 | |
d62a17ae | 1916 | /* If interface is down, don't send RIP packet. */ |
1917 | if (!if_is_up(ifp)) | |
1918 | return 0; | |
a94434b6 | 1919 | |
d62a17ae | 1920 | if (IS_RIPNG_DEBUG_EVENT) |
1921 | zlog_debug("RIPng send request to %s", ifp->name); | |
718e3744 | 1922 | |
d62a17ae | 1923 | memset(&ripng_packet, 0, sizeof(ripng_packet)); |
1924 | ripng_packet.command = RIPNG_REQUEST; | |
1925 | ripng_packet.version = RIPNG_V1; | |
1926 | rte = ripng_packet.rte; | |
1927 | rte->metric = RIPNG_METRIC_INFINITY; | |
718e3744 | 1928 | |
d62a17ae | 1929 | return ripng_send_packet((caddr_t)&ripng_packet, sizeof(ripng_packet), |
1930 | NULL, ifp); | |
718e3744 | 1931 | } |
1932 | ||
6b0655a2 | 1933 | |
d62a17ae | 1934 | static int ripng_update_jitter(int time) |
718e3744 | 1935 | { |
5920b3eb | 1936 | return ((frr_weak_random() % (time + 1)) - (time / 2)); |
718e3744 | 1937 | } |
1938 | ||
5c84b9a5 | 1939 | void ripng_event(struct ripng *ripng, enum ripng_event event, int sock) |
718e3744 | 1940 | { |
d62a17ae | 1941 | int jitter = 0; |
718e3744 | 1942 | |
d62a17ae | 1943 | switch (event) { |
1944 | case RIPNG_READ: | |
5c84b9a5 RW |
1945 | thread_add_read(master, ripng_read, ripng, sock, |
1946 | &ripng->t_read); | |
d62a17ae | 1947 | break; |
1948 | case RIPNG_UPDATE_EVENT: | |
b3d6bc6e MS |
1949 | thread_cancel(&ripng->t_update); |
1950 | ||
d62a17ae | 1951 | /* Update timer jitter. */ |
1952 | jitter = ripng_update_jitter(ripng->update_time); | |
1953 | ||
1954 | ripng->t_update = NULL; | |
5c84b9a5 | 1955 | thread_add_timer(master, ripng_update, ripng, |
d62a17ae | 1956 | sock ? 2 : ripng->update_time + jitter, |
1957 | &ripng->t_update); | |
1958 | break; | |
1959 | case RIPNG_TRIGGERED_UPDATE: | |
1960 | if (ripng->t_triggered_interval) | |
1961 | ripng->trigger = 1; | |
1962 | else | |
5c84b9a5 | 1963 | thread_add_event(master, ripng_triggered_update, ripng, |
d62a17ae | 1964 | 0, &ripng->t_triggered_update); |
1965 | break; | |
1966 | default: | |
1967 | break; | |
1968 | } | |
718e3744 | 1969 | } |
6b0655a2 | 1970 | |
718e3744 | 1971 | |
718e3744 | 1972 | /* Print out routes update time. */ |
d62a17ae | 1973 | static void ripng_vty_out_uptime(struct vty *vty, struct ripng_info *rinfo) |
718e3744 | 1974 | { |
d62a17ae | 1975 | time_t clock; |
a2700b50 | 1976 | struct tm tm; |
718e3744 | 1977 | #define TIME_BUF 25 |
d62a17ae | 1978 | char timebuf[TIME_BUF]; |
1979 | struct thread *thread; | |
1980 | ||
1981 | if ((thread = rinfo->t_timeout) != NULL) { | |
1982 | clock = thread_timer_remain_second(thread); | |
a2700b50 MS |
1983 | gmtime_r(&clock, &tm); |
1984 | strftime(timebuf, TIME_BUF, "%M:%S", &tm); | |
d62a17ae | 1985 | vty_out(vty, "%5s", timebuf); |
1986 | } else if ((thread = rinfo->t_garbage_collect) != NULL) { | |
1987 | clock = thread_timer_remain_second(thread); | |
a2700b50 MS |
1988 | gmtime_r(&clock, &tm); |
1989 | strftime(timebuf, TIME_BUF, "%M:%S", &tm); | |
d62a17ae | 1990 | vty_out(vty, "%5s", timebuf); |
1991 | } | |
718e3744 | 1992 | } |
1993 | ||
d62a17ae | 1994 | static char *ripng_route_subtype_print(struct ripng_info *rinfo) |
1995 | { | |
1996 | static char str[3]; | |
1997 | memset(str, 0, 3); | |
1998 | ||
1999 | if (rinfo->suppress) | |
9736ba9e | 2000 | strlcat(str, "S", sizeof(str)); |
d62a17ae | 2001 | |
2002 | switch (rinfo->sub_type) { | |
2003 | case RIPNG_ROUTE_RTE: | |
9736ba9e | 2004 | strlcat(str, "n", sizeof(str)); |
d62a17ae | 2005 | break; |
2006 | case RIPNG_ROUTE_STATIC: | |
9736ba9e | 2007 | strlcat(str, "s", sizeof(str)); |
d62a17ae | 2008 | break; |
2009 | case RIPNG_ROUTE_DEFAULT: | |
9736ba9e | 2010 | strlcat(str, "d", sizeof(str)); |
d62a17ae | 2011 | break; |
2012 | case RIPNG_ROUTE_REDISTRIBUTE: | |
9736ba9e | 2013 | strlcat(str, "r", sizeof(str)); |
d62a17ae | 2014 | break; |
2015 | case RIPNG_ROUTE_INTERFACE: | |
9736ba9e | 2016 | strlcat(str, "i", sizeof(str)); |
d62a17ae | 2017 | break; |
2018 | default: | |
9736ba9e | 2019 | strlcat(str, "?", sizeof(str)); |
d62a17ae | 2020 | break; |
2021 | } | |
a94434b6 | 2022 | |
d62a17ae | 2023 | return str; |
a94434b6 | 2024 | } |
2025 | ||
718e3744 | 2026 | DEFUN (show_ipv6_ripng, |
2027 | show_ipv6_ripng_cmd, | |
dde7b15b | 2028 | "show ipv6 ripng [vrf NAME]", |
718e3744 | 2029 | SHOW_STR |
8d0f15fd | 2030 | IPV6_STR |
dde7b15b RW |
2031 | "Show RIPng routes\n" |
2032 | VRF_CMD_HELP_STR) | |
718e3744 | 2033 | { |
5c84b9a5 | 2034 | struct ripng *ripng; |
fe08ba7e | 2035 | struct agg_node *rp; |
d62a17ae | 2036 | struct ripng_info *rinfo; |
2037 | struct ripng_aggregate *aggregate; | |
d62a17ae | 2038 | struct list *list = NULL; |
2039 | struct listnode *listnode = NULL; | |
2040 | int len; | |
dde7b15b RW |
2041 | const char *vrf_name; |
2042 | int idx = 0; | |
d62a17ae | 2043 | |
dde7b15b RW |
2044 | if (argv_find(argv, argc, "vrf", &idx)) |
2045 | vrf_name = argv[idx + 1]->arg; | |
2046 | else | |
2047 | vrf_name = VRF_DEFAULT_NAME; | |
2048 | ||
2049 | ripng = ripng_lookup_by_vrf_name(vrf_name); | |
2050 | if (!ripng) { | |
2051 | vty_out(vty, "%% RIPng instance not found\n"); | |
2052 | return CMD_SUCCESS; | |
2053 | } | |
2054 | if (!ripng->enabled) { | |
2055 | vty_out(vty, "%% RIPng instance is disabled\n"); | |
d62a17ae | 2056 | return CMD_SUCCESS; |
dde7b15b | 2057 | } |
d62a17ae | 2058 | |
2059 | /* Header of display. */ | |
2060 | vty_out(vty, | |
2061 | "Codes: R - RIPng, C - connected, S - Static, O - OSPF, B - BGP\n" | |
2062 | "Sub-codes:\n" | |
2063 | " (n) - normal, (s) - static, (d) - default, (r) - redistribute,\n" | |
2064 | " (i) - interface, (a/S) - aggregated/Suppressed\n\n" | |
2065 | " Network Next Hop Via Metric Tag Time\n"); | |
2066 | ||
fe08ba7e | 2067 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { |
d62a17ae | 2068 | if ((aggregate = rp->aggregate) != NULL) { |
718e3744 | 2069 | #ifdef DEBUG |
26a3ffd6 DS |
2070 | vty_out(vty, "R(a) %d/%d %pRN ", aggregate->count, |
2071 | aggregate->suppress, rp); | |
718e3744 | 2072 | #else |
26a3ffd6 | 2073 | vty_out(vty, "R(a) %pRN ", rp); |
718e3744 | 2074 | #endif /* DEBUG */ |
d62a17ae | 2075 | vty_out(vty, "\n"); |
2076 | vty_out(vty, "%*s", 18, " "); | |
718e3744 | 2077 | |
d62a17ae | 2078 | vty_out(vty, "%*s", 28, " "); |
2079 | vty_out(vty, "self %2d %3" ROUTE_TAG_PRI "\n", | |
2080 | aggregate->metric, (route_tag_t)aggregate->tag); | |
2081 | } | |
718e3744 | 2082 | |
d62a17ae | 2083 | if ((list = rp->info) != NULL) |
2084 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
718e3744 | 2085 | #ifdef DEBUG |
26a3ffd6 | 2086 | vty_out(vty, "%c(%s) 0/%d %pRN ", |
d62a17ae | 2087 | zebra_route_char(rinfo->type), |
2088 | ripng_route_subtype_print(rinfo), | |
26a3ffd6 | 2089 | rinfo->suppress, rp); |
718e3744 | 2090 | #else |
26a3ffd6 | 2091 | vty_out(vty, "%c(%s) %pRN ", |
d62a17ae | 2092 | zebra_route_char(rinfo->type), |
26a3ffd6 | 2093 | ripng_route_subtype_print(rinfo), rp); |
718e3744 | 2094 | #endif /* DEBUG */ |
d62a17ae | 2095 | vty_out(vty, "\n"); |
2096 | vty_out(vty, "%*s", 18, " "); | |
2097 | len = vty_out(vty, "%s", | |
2098 | inet6_ntoa(rinfo->nexthop)); | |
2099 | ||
2100 | len = 28 - len; | |
2101 | if (len > 0) | |
51f7fe84 | 2102 | vty_out(vty, "%*s", len, " "); |
d62a17ae | 2103 | |
2104 | /* from */ | |
2105 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) | |
2106 | && (rinfo->sub_type == RIPNG_ROUTE_RTE)) { | |
2107 | len = vty_out( | |
2108 | vty, "%s", | |
dde7b15b RW |
2109 | ifindex2ifname( |
2110 | rinfo->ifindex, | |
2111 | ripng->vrf->vrf_id)); | |
d62a17ae | 2112 | } else if (rinfo->metric |
2113 | == RIPNG_METRIC_INFINITY) { | |
2114 | len = vty_out(vty, "kill"); | |
2115 | } else | |
2116 | len = vty_out(vty, "self"); | |
2117 | ||
2118 | len = 9 - len; | |
2119 | if (len > 0) | |
2120 | vty_out(vty, "%*s", len, " "); | |
2121 | ||
2122 | vty_out(vty, " %2d %3" ROUTE_TAG_PRI " ", | |
2123 | rinfo->metric, (route_tag_t)rinfo->tag); | |
2124 | ||
2125 | /* time */ | |
2126 | if ((rinfo->type == ZEBRA_ROUTE_RIPNG) | |
2127 | && (rinfo->sub_type == RIPNG_ROUTE_RTE)) { | |
2128 | /* RTE from remote RIP routers */ | |
2129 | ripng_vty_out_uptime(vty, rinfo); | |
2130 | } else if (rinfo->metric | |
2131 | == RIPNG_METRIC_INFINITY) { | |
2132 | /* poisonous reversed routes (gc) */ | |
2133 | ripng_vty_out_uptime(vty, rinfo); | |
2134 | } | |
2135 | ||
2136 | vty_out(vty, "\n"); | |
2137 | } | |
718e3744 | 2138 | } |
718e3744 | 2139 | |
d62a17ae | 2140 | return CMD_SUCCESS; |
718e3744 | 2141 | } |
2142 | ||
a94434b6 | 2143 | DEFUN (show_ipv6_ripng_status, |
2144 | show_ipv6_ripng_status_cmd, | |
dde7b15b | 2145 | "show ipv6 ripng [vrf NAME] status", |
a94434b6 | 2146 | SHOW_STR |
8d0f15fd | 2147 | IPV6_STR |
a94434b6 | 2148 | "Show RIPng routes\n" |
dde7b15b | 2149 | VRF_CMD_HELP_STR |
a94434b6 | 2150 | "IPv6 routing protocol process parameters and statistics\n") |
2151 | { | |
5c84b9a5 | 2152 | struct ripng *ripng; |
d62a17ae | 2153 | struct interface *ifp; |
dde7b15b RW |
2154 | const char *vrf_name; |
2155 | int idx = 0; | |
a94434b6 | 2156 | |
dde7b15b RW |
2157 | if (argv_find(argv, argc, "vrf", &idx)) |
2158 | vrf_name = argv[idx + 1]->arg; | |
2159 | else | |
2160 | vrf_name = VRF_DEFAULT_NAME; | |
2161 | ||
2162 | ripng = ripng_lookup_by_vrf_name(vrf_name); | |
2163 | if (!ripng) { | |
2164 | vty_out(vty, "%% RIPng instance not found\n"); | |
2165 | return CMD_SUCCESS; | |
2166 | } | |
2167 | if (!ripng->enabled) { | |
2168 | vty_out(vty, "%% RIPng instance is disabled\n"); | |
d62a17ae | 2169 | return CMD_SUCCESS; |
dde7b15b | 2170 | } |
a94434b6 | 2171 | |
d62a17ae | 2172 | vty_out(vty, "Routing Protocol is \"RIPng\"\n"); |
f8981ec5 | 2173 | vty_out(vty, " Sending updates every %u seconds with +/-50%%,", |
d62a17ae | 2174 | ripng->update_time); |
2175 | vty_out(vty, " next due in %lu seconds\n", | |
2176 | thread_timer_remain_second(ripng->t_update)); | |
f8981ec5 RW |
2177 | vty_out(vty, " Timeout after %u seconds,", ripng->timeout_time); |
2178 | vty_out(vty, " garbage collect after %u seconds\n", | |
d62a17ae | 2179 | ripng->garbage_time); |
a94434b6 | 2180 | |
d62a17ae | 2181 | /* Filtering status show. */ |
03a38493 | 2182 | config_show_distribute(vty, ripng->distribute_ctx); |
a94434b6 | 2183 | |
d62a17ae | 2184 | /* Default metric information. */ |
2185 | vty_out(vty, " Default redistribution metric is %d\n", | |
2186 | ripng->default_metric); | |
a94434b6 | 2187 | |
d62a17ae | 2188 | /* Redistribute information. */ |
2189 | vty_out(vty, " Redistributing:"); | |
5c84b9a5 | 2190 | ripng_redistribute_write(vty, ripng); |
d62a17ae | 2191 | vty_out(vty, "\n"); |
a94434b6 | 2192 | |
d62a17ae | 2193 | vty_out(vty, " Default version control: send version %d,", |
2194 | ripng->version); | |
2195 | vty_out(vty, " receive version %d \n", ripng->version); | |
a94434b6 | 2196 | |
d62a17ae | 2197 | vty_out(vty, " Interface Send Recv\n"); |
a94434b6 | 2198 | |
dde7b15b | 2199 | FOR_ALL_INTERFACES (ripng->vrf, ifp) { |
d62a17ae | 2200 | struct ripng_interface *ri; |
2201 | ||
2202 | ri = ifp->info; | |
a94434b6 | 2203 | |
d62a17ae | 2204 | if (ri->enable_network || ri->enable_interface) { |
a94434b6 | 2205 | |
d62a17ae | 2206 | vty_out(vty, " %-17s%-3d %-3d\n", ifp->name, |
2207 | ripng->version, ripng->version); | |
2208 | } | |
a94434b6 | 2209 | } |
a94434b6 | 2210 | |
d62a17ae | 2211 | vty_out(vty, " Routing for Networks:\n"); |
5c84b9a5 | 2212 | ripng_network_write(vty, ripng); |
a94434b6 | 2213 | |
d62a17ae | 2214 | vty_out(vty, " Routing Information Sources:\n"); |
2215 | vty_out(vty, | |
2216 | " Gateway BadPackets BadRoutes Distance Last Update\n"); | |
5c84b9a5 | 2217 | ripng_peer_display(vty, ripng); |
a94434b6 | 2218 | |
d62a17ae | 2219 | return CMD_SUCCESS; |
a94434b6 | 2220 | } |
2221 | ||
718e3744 | 2222 | #if 0 |
2223 | /* RIPng update timer setup. */ | |
2224 | DEFUN (ripng_update_timer, | |
2225 | ripng_update_timer_cmd, | |
2226 | "update-timer SECOND", | |
2227 | "Set RIPng update timer in seconds\n" | |
2228 | "Seconds\n") | |
2229 | { | |
2230 | unsigned long update; | |
2231 | char *endptr = NULL; | |
2232 | ||
2233 | update = strtoul (argv[0], &endptr, 10); | |
2234 | if (update == ULONG_MAX || *endptr != '\0') | |
2235 | { | |
26a429fe | 2236 | vty_out (vty, "update timer value error\n"); |
f1a05de9 | 2237 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2238 | } |
2239 | ||
2240 | ripng->update_time = update; | |
2241 | ||
2242 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2243 | return CMD_SUCCESS; | |
2244 | } | |
2245 | ||
2246 | DEFUN (no_ripng_update_timer, | |
2247 | no_ripng_update_timer_cmd, | |
2248 | "no update-timer SECOND", | |
2249 | NO_STR | |
2250 | "Unset RIPng update timer in seconds\n" | |
2251 | "Seconds\n") | |
2252 | { | |
2253 | ripng->update_time = RIPNG_UPDATE_TIMER_DEFAULT; | |
2254 | ripng_event (RIPNG_UPDATE_EVENT, 0); | |
2255 | return CMD_SUCCESS; | |
2256 | } | |
2257 | ||
2258 | /* RIPng timeout timer setup. */ | |
2259 | DEFUN (ripng_timeout_timer, | |
2260 | ripng_timeout_timer_cmd, | |
2261 | "timeout-timer SECOND", | |
2262 | "Set RIPng timeout timer in seconds\n" | |
2263 | "Seconds\n") | |
2264 | { | |
2265 | unsigned long timeout; | |
2266 | char *endptr = NULL; | |
2267 | ||
2268 | timeout = strtoul (argv[0], &endptr, 10); | |
2269 | if (timeout == ULONG_MAX || *endptr != '\0') | |
2270 | { | |
26a429fe | 2271 | vty_out (vty, "timeout timer value error\n"); |
f1a05de9 | 2272 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2273 | } |
2274 | ||
2275 | ripng->timeout_time = timeout; | |
2276 | ||
2277 | return CMD_SUCCESS; | |
2278 | } | |
2279 | ||
2280 | DEFUN (no_ripng_timeout_timer, | |
2281 | no_ripng_timeout_timer_cmd, | |
2282 | "no timeout-timer SECOND", | |
2283 | NO_STR | |
2284 | "Unset RIPng timeout timer in seconds\n" | |
2285 | "Seconds\n") | |
2286 | { | |
2287 | ripng->timeout_time = RIPNG_TIMEOUT_TIMER_DEFAULT; | |
2288 | return CMD_SUCCESS; | |
2289 | } | |
2290 | ||
2291 | /* RIPng garbage timer setup. */ | |
2292 | DEFUN (ripng_garbage_timer, | |
2293 | ripng_garbage_timer_cmd, | |
2294 | "garbage-timer SECOND", | |
2295 | "Set RIPng garbage timer in seconds\n" | |
2296 | "Seconds\n") | |
2297 | { | |
2298 | unsigned long garbage; | |
2299 | char *endptr = NULL; | |
2300 | ||
2301 | garbage = strtoul (argv[0], &endptr, 10); | |
2302 | if (garbage == ULONG_MAX || *endptr != '\0') | |
2303 | { | |
26a429fe | 2304 | vty_out (vty, "garbage timer value error\n"); |
f1a05de9 | 2305 | return CMD_WARNING_CONFIG_FAILED; |
718e3744 | 2306 | } |
2307 | ||
2308 | ripng->garbage_time = garbage; | |
2309 | ||
2310 | return CMD_SUCCESS; | |
2311 | } | |
2312 | ||
2313 | DEFUN (no_ripng_garbage_timer, | |
2314 | no_ripng_garbage_timer_cmd, | |
2315 | "no garbage-timer SECOND", | |
2316 | NO_STR | |
2317 | "Unset RIPng garbage timer in seconds\n" | |
2318 | "Seconds\n") | |
2319 | { | |
2320 | ripng->garbage_time = RIPNG_GARBAGE_TIMER_DEFAULT; | |
2321 | return CMD_SUCCESS; | |
2322 | } | |
2323 | #endif /* 0 */ | |
2324 | ||
d7d73ffc | 2325 | #if 0 |
dd4f9f99 DW |
2326 | DEFUN (show_ipv6_protocols, |
2327 | show_ipv6_protocols_cmd, | |
718e3744 | 2328 | "show ipv6 protocols", |
2329 | SHOW_STR | |
8d0f15fd | 2330 | IPV6_STR |
d911a12a | 2331 | "Routing protocol information\n") |
718e3744 | 2332 | { |
2333 | if (! ripng) | |
2334 | return CMD_SUCCESS; | |
2335 | ||
26a429fe | 2336 | vty_out (vty, "Routing Protocol is \"ripng\"\n"); |
c258527b | 2337 | |
55f70b67 DL |
2338 | vty_out (vty, "Sending updates every %ld seconds, next due in %d seconds\n", |
2339 | ripng->update_time, 0); | |
718e3744 | 2340 | |
55f70b67 | 2341 | vty_out (vty, "Timerout after %ld seconds, garbage correct %ld\n", |
718e3744 | 2342 | ripng->timeout_time, |
55f70b67 | 2343 | ripng->garbage_time); |
718e3744 | 2344 | |
2345 | vty_out (vty, "Outgoing update filter list for all interfaces is not set"); | |
2346 | vty_out (vty, "Incoming update filter list for all interfaces is not set"); | |
2347 | ||
2348 | return CMD_SUCCESS; | |
2349 | } | |
d7d73ffc | 2350 | #endif |
718e3744 | 2351 | |
fac76f9c | 2352 | /* Update ECMP routes to zebra when ECMP is disabled. */ |
5c84b9a5 | 2353 | void ripng_ecmp_disable(struct ripng *ripng) |
d62a17ae | 2354 | { |
fe08ba7e | 2355 | struct agg_node *rp; |
d62a17ae | 2356 | struct ripng_info *rinfo, *tmp_rinfo; |
2357 | struct list *list; | |
2358 | struct listnode *node, *nextnode; | |
2359 | ||
2360 | if (!ripng) | |
2361 | return; | |
2362 | ||
fe08ba7e | 2363 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) |
d62a17ae | 2364 | if ((list = rp->info) != NULL && listcount(list) > 1) { |
2365 | rinfo = listgetdata(listhead(list)); | |
2366 | if (!ripng_route_rte(rinfo)) | |
2367 | continue; | |
2368 | ||
2369 | /* Drop all other entries, except the first one. */ | |
2370 | for (ALL_LIST_ELEMENTS(list, node, nextnode, tmp_rinfo)) | |
2371 | if (tmp_rinfo != rinfo) { | |
2372 | RIPNG_TIMER_OFF(tmp_rinfo->t_timeout); | |
2373 | RIPNG_TIMER_OFF( | |
2374 | tmp_rinfo->t_garbage_collect); | |
2375 | list_delete_node(list, node); | |
2376 | ripng_info_free(tmp_rinfo); | |
2377 | } | |
2378 | ||
2379 | /* Update zebra. */ | |
5c84b9a5 | 2380 | ripng_zebra_ipv6_add(ripng, rp); |
d62a17ae | 2381 | |
2382 | /* Set the route change flag. */ | |
2383 | SET_FLAG(rinfo->flags, RIPNG_RTF_CHANGED); | |
2384 | ||
2385 | /* Signal the output process to trigger an update. */ | |
5c84b9a5 | 2386 | ripng_event(ripng, RIPNG_TRIGGERED_UPDATE, 0); |
d62a17ae | 2387 | } |
fac76f9c FL |
2388 | } |
2389 | ||
718e3744 | 2390 | /* RIPng configuration write function. */ |
d62a17ae | 2391 | static int ripng_config_write(struct vty *vty) |
2392 | { | |
dde7b15b | 2393 | struct ripng *ripng; |
d62a17ae | 2394 | int write = 0; |
d62a17ae | 2395 | |
dde7b15b RW |
2396 | RB_FOREACH(ripng, ripng_instance_head, &ripng_instances) { |
2397 | char xpath[XPATH_MAXLEN]; | |
2398 | struct lyd_node *dnode; | |
2399 | ||
2400 | snprintf(xpath, sizeof(xpath), | |
2401 | "/frr-ripngd:ripngd/instance[vrf='%s']", | |
2402 | ripng->vrf_name); | |
2403 | ||
2404 | dnode = yang_dnode_get(running_config->dnode, xpath); | |
2405 | assert(dnode); | |
d62a17ae | 2406 | |
5c84b9a5 | 2407 | nb_cli_show_dnode_cmds(vty, dnode, false); |
718e3744 | 2408 | |
dde7b15b | 2409 | config_write_distribute(vty, ripng->distribute_ctx); |
4b23867c | 2410 | config_write_if_rmap(vty, ripng->if_rmap_ctx); |
718e3744 | 2411 | |
9a12e9e5 | 2412 | write = 1; |
d62a17ae | 2413 | } |
9a12e9e5 | 2414 | |
d62a17ae | 2415 | return write; |
718e3744 | 2416 | } |
2417 | ||
612c2c15 | 2418 | static int ripng_config_write(struct vty *vty); |
718e3744 | 2419 | /* RIPng node structure. */ |
d62a17ae | 2420 | static struct cmd_node cmd_ripng_node = { |
f4b8291f | 2421 | .name = "ripng", |
62b346ee | 2422 | .node = RIPNG_NODE, |
24389580 | 2423 | .parent_node = CONFIG_NODE, |
62b346ee | 2424 | .prompt = "%s(config-router)# ", |
612c2c15 | 2425 | .config_write = ripng_config_write, |
718e3744 | 2426 | }; |
2427 | ||
03a38493 PG |
2428 | static void ripng_distribute_update(struct distribute_ctx *ctx, |
2429 | struct distribute *dist) | |
d62a17ae | 2430 | { |
2431 | struct interface *ifp; | |
2432 | struct ripng_interface *ri; | |
2433 | struct access_list *alist; | |
2434 | struct prefix_list *plist; | |
2435 | ||
dde7b15b | 2436 | if (!ctx->vrf || !dist->ifname) |
d62a17ae | 2437 | return; |
2438 | ||
a36898e7 | 2439 | ifp = if_lookup_by_name(dist->ifname, ctx->vrf->vrf_id); |
d62a17ae | 2440 | if (ifp == NULL) |
2441 | return; | |
2442 | ||
2443 | ri = ifp->info; | |
2444 | ||
2445 | if (dist->list[DISTRIBUTE_V6_IN]) { | |
2446 | alist = access_list_lookup(AFI_IP6, | |
2447 | dist->list[DISTRIBUTE_V6_IN]); | |
2448 | if (alist) | |
2449 | ri->list[RIPNG_FILTER_IN] = alist; | |
2450 | else | |
2451 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2452 | } else | |
2453 | ri->list[RIPNG_FILTER_IN] = NULL; | |
2454 | ||
2455 | if (dist->list[DISTRIBUTE_V6_OUT]) { | |
2456 | alist = access_list_lookup(AFI_IP6, | |
2457 | dist->list[DISTRIBUTE_V6_OUT]); | |
2458 | if (alist) | |
2459 | ri->list[RIPNG_FILTER_OUT] = alist; | |
2460 | else | |
2461 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2462 | } else | |
2463 | ri->list[RIPNG_FILTER_OUT] = NULL; | |
2464 | ||
2465 | if (dist->prefix[DISTRIBUTE_V6_IN]) { | |
2466 | plist = prefix_list_lookup(AFI_IP6, | |
2467 | dist->prefix[DISTRIBUTE_V6_IN]); | |
2468 | if (plist) | |
2469 | ri->prefix[RIPNG_FILTER_IN] = plist; | |
2470 | else | |
2471 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2472 | } else | |
2473 | ri->prefix[RIPNG_FILTER_IN] = NULL; | |
2474 | ||
2475 | if (dist->prefix[DISTRIBUTE_V6_OUT]) { | |
2476 | plist = prefix_list_lookup(AFI_IP6, | |
2477 | dist->prefix[DISTRIBUTE_V6_OUT]); | |
2478 | if (plist) | |
2479 | ri->prefix[RIPNG_FILTER_OUT] = plist; | |
2480 | else | |
2481 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2482 | } else | |
2483 | ri->prefix[RIPNG_FILTER_OUT] = NULL; | |
2484 | } | |
2485 | ||
2486 | void ripng_distribute_update_interface(struct interface *ifp) | |
2487 | { | |
dde7b15b RW |
2488 | struct ripng_interface *ri = ifp->info; |
2489 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 2490 | struct distribute *dist; |
2491 | ||
03a38493 PG |
2492 | if (!ripng) |
2493 | return; | |
2494 | dist = distribute_lookup(ripng->distribute_ctx, ifp->name); | |
d62a17ae | 2495 | if (dist) |
03a38493 | 2496 | ripng_distribute_update(ripng->distribute_ctx, dist); |
718e3744 | 2497 | } |
2498 | ||
2499 | /* Update all interface's distribute list. */ | |
d62a17ae | 2500 | static void ripng_distribute_update_all(struct prefix_list *notused) |
718e3744 | 2501 | { |
f4e14fdb | 2502 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
d62a17ae | 2503 | struct interface *ifp; |
718e3744 | 2504 | |
451fda4f | 2505 | FOR_ALL_INTERFACES (vrf, ifp) |
d62a17ae | 2506 | ripng_distribute_update_interface(ifp); |
718e3744 | 2507 | } |
c9e52be3 | 2508 | |
d62a17ae | 2509 | static void ripng_distribute_update_all_wrapper(struct access_list *notused) |
c9e52be3 | 2510 | { |
d62a17ae | 2511 | ripng_distribute_update_all(NULL); |
c9e52be3 | 2512 | } |
6b0655a2 | 2513 | |
a94434b6 | 2514 | /* delete all the added ripng routes. */ |
5c84b9a5 | 2515 | void ripng_clean(struct ripng *ripng) |
d62a17ae | 2516 | { |
eb6b3885 IR |
2517 | ripng_interface_clean(ripng); |
2518 | ||
dde7b15b RW |
2519 | if (ripng->enabled) |
2520 | ripng_instance_disable(ripng); | |
a9caf6e9 RW |
2521 | |
2522 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) | |
f9120f71 RW |
2523 | if (ripng->redist[i].route_map.name) |
2524 | free(ripng->redist[i].route_map.name); | |
a94434b6 | 2525 | |
a9caf6e9 | 2526 | agg_table_finish(ripng->table); |
56bf1cb2 | 2527 | list_delete(&ripng->peer_list); |
a9caf6e9 | 2528 | distribute_list_delete(&ripng->distribute_ctx); |
8f88441d | 2529 | if_rmap_ctx_delete(ripng->if_rmap_ctx); |
0581e54d | 2530 | |
a9caf6e9 RW |
2531 | stream_free(ripng->ibuf); |
2532 | stream_free(ripng->obuf); | |
a94434b6 | 2533 | |
5c84b9a5 RW |
2534 | ripng_clean_network(ripng); |
2535 | ripng_passive_interface_clean(ripng); | |
b0ba762f | 2536 | vector_free(ripng->enable_if); |
29b94d58 | 2537 | agg_table_finish(ripng->enable_network); |
0c32404f | 2538 | vector_free(ripng->passive_interface); |
26c6be93 | 2539 | list_delete(&ripng->offset_list_master); |
5c84b9a5 | 2540 | |
dde7b15b RW |
2541 | RB_REMOVE(ripng_instance_head, &ripng_instances, ripng); |
2542 | XFREE(MTYPE_RIPNG_VRF_NAME, ripng->vrf_name); | |
a9caf6e9 | 2543 | XFREE(MTYPE_RIPNG, ripng); |
a94434b6 | 2544 | } |
2545 | ||
4b23867c PG |
2546 | static void ripng_if_rmap_update(struct if_rmap_ctx *ctx, |
2547 | struct if_rmap *if_rmap) | |
718e3744 | 2548 | { |
aec0d756 | 2549 | struct interface *ifp = NULL; |
d62a17ae | 2550 | struct ripng_interface *ri; |
2551 | struct route_map *rmap; | |
aec0d756 | 2552 | struct vrf *vrf = NULL; |
718e3744 | 2553 | |
aec0d756 PG |
2554 | if (ctx->name) |
2555 | vrf = vrf_lookup_by_name(ctx->name); | |
2556 | if (vrf) | |
a36898e7 | 2557 | ifp = if_lookup_by_name(if_rmap->ifname, vrf->vrf_id); |
d62a17ae | 2558 | if (ifp == NULL) |
2559 | return; | |
718e3744 | 2560 | |
d62a17ae | 2561 | ri = ifp->info; |
718e3744 | 2562 | |
d62a17ae | 2563 | if (if_rmap->routemap[IF_RMAP_IN]) { |
2564 | rmap = route_map_lookup_by_name(if_rmap->routemap[IF_RMAP_IN]); | |
2565 | if (rmap) | |
2566 | ri->routemap[IF_RMAP_IN] = rmap; | |
2567 | else | |
2568 | ri->routemap[IF_RMAP_IN] = NULL; | |
2569 | } else | |
2570 | ri->routemap[RIPNG_FILTER_IN] = NULL; | |
718e3744 | 2571 | |
d62a17ae | 2572 | if (if_rmap->routemap[IF_RMAP_OUT]) { |
2573 | rmap = route_map_lookup_by_name(if_rmap->routemap[IF_RMAP_OUT]); | |
2574 | if (rmap) | |
2575 | ri->routemap[IF_RMAP_OUT] = rmap; | |
2576 | else | |
2577 | ri->routemap[IF_RMAP_OUT] = NULL; | |
2578 | } else | |
2579 | ri->routemap[RIPNG_FILTER_OUT] = NULL; | |
718e3744 | 2580 | } |
2581 | ||
d62a17ae | 2582 | void ripng_if_rmap_update_interface(struct interface *ifp) |
718e3744 | 2583 | { |
8f88441d RW |
2584 | struct ripng_interface *ri = ifp->info; |
2585 | struct ripng *ripng = ri->ripng; | |
d62a17ae | 2586 | struct if_rmap *if_rmap; |
4b23867c | 2587 | struct if_rmap_ctx *ctx; |
718e3744 | 2588 | |
4b23867c PG |
2589 | if (!ripng) |
2590 | return; | |
2591 | ctx = ripng->if_rmap_ctx; | |
2592 | if (!ctx) | |
2593 | return; | |
2594 | if_rmap = if_rmap_lookup(ctx, ifp->name); | |
d62a17ae | 2595 | if (if_rmap) |
4b23867c | 2596 | ripng_if_rmap_update(ctx, if_rmap); |
718e3744 | 2597 | } |
2598 | ||
5c84b9a5 | 2599 | static void ripng_routemap_update_redistribute(struct ripng *ripng) |
718e3744 | 2600 | { |
5c84b9a5 | 2601 | for (int i = 0; i < ZEBRA_ROUTE_MAX; i++) { |
8f88441d | 2602 | if (ripng->redist[i].route_map.name) { |
f9120f71 RW |
2603 | ripng->redist[i].route_map.map = |
2604 | route_map_lookup_by_name( | |
2605 | ripng->redist[i].route_map.name); | |
8f88441d RW |
2606 | route_map_counter_increment( |
2607 | ripng->redist[i].route_map.map); | |
d62a17ae | 2608 | } |
718e3744 | 2609 | } |
718e3744 | 2610 | } |
2611 | ||
d62a17ae | 2612 | static void ripng_routemap_update(const char *unused) |
718e3744 | 2613 | { |
f4e14fdb | 2614 | struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT); |
5c84b9a5 | 2615 | struct ripng *ripng; |
d62a17ae | 2616 | struct interface *ifp; |
718e3744 | 2617 | |
451fda4f | 2618 | FOR_ALL_INTERFACES (vrf, ifp) |
d62a17ae | 2619 | ripng_if_rmap_update_interface(ifp); |
718e3744 | 2620 | |
5c84b9a5 RW |
2621 | ripng = vrf->info; |
2622 | if (ripng) | |
2623 | ripng_routemap_update_redistribute(ripng); | |
718e3744 | 2624 | } |
2625 | ||
dde7b15b RW |
2626 | /* Link RIPng instance to VRF. */ |
2627 | static void ripng_vrf_link(struct ripng *ripng, struct vrf *vrf) | |
2628 | { | |
2629 | struct interface *ifp; | |
2630 | ||
2631 | ripng->vrf = vrf; | |
2632 | ripng->distribute_ctx->vrf = vrf; | |
2633 | vrf->info = ripng; | |
2634 | ||
2635 | FOR_ALL_INTERFACES (vrf, ifp) | |
2636 | ripng_interface_sync(ifp); | |
2637 | } | |
2638 | ||
2639 | /* Unlink RIPng instance from VRF. */ | |
2640 | static void ripng_vrf_unlink(struct ripng *ripng, struct vrf *vrf) | |
2641 | { | |
2642 | struct interface *ifp; | |
2643 | ||
2644 | ripng->vrf = NULL; | |
2645 | ripng->distribute_ctx->vrf = NULL; | |
2646 | vrf->info = NULL; | |
2647 | ||
2648 | FOR_ALL_INTERFACES (vrf, ifp) | |
2649 | ripng_interface_sync(ifp); | |
2650 | } | |
2651 | ||
2652 | static void ripng_instance_enable(struct ripng *ripng, struct vrf *vrf, | |
2653 | int sock) | |
2654 | { | |
2655 | ripng->sock = sock; | |
2656 | ||
2657 | ripng_vrf_link(ripng, vrf); | |
2658 | ripng->enabled = true; | |
2659 | ||
f9120f71 RW |
2660 | /* Resend all redistribute requests. */ |
2661 | ripng_redistribute_enable(ripng); | |
2662 | ||
dde7b15b RW |
2663 | /* Create read and timer thread. */ |
2664 | ripng_event(ripng, RIPNG_READ, ripng->sock); | |
2665 | ripng_event(ripng, RIPNG_UPDATE_EVENT, 1); | |
2666 | ||
2667 | ripng_zebra_vrf_register(vrf); | |
2668 | } | |
2669 | ||
2670 | static void ripng_instance_disable(struct ripng *ripng) | |
2671 | { | |
2672 | struct vrf *vrf = ripng->vrf; | |
2673 | struct agg_node *rp; | |
2674 | ||
2675 | /* Clear RIPng routes */ | |
2676 | for (rp = agg_route_top(ripng->table); rp; rp = agg_route_next(rp)) { | |
2677 | struct ripng_aggregate *aggregate; | |
2678 | struct list *list; | |
2679 | ||
2680 | if ((list = rp->info) != NULL) { | |
2681 | struct ripng_info *rinfo; | |
2682 | struct listnode *listnode; | |
2683 | ||
2684 | rinfo = listgetdata(listhead(list)); | |
2685 | if (ripng_route_rte(rinfo)) | |
2686 | ripng_zebra_ipv6_delete(ripng, rp); | |
2687 | ||
2688 | for (ALL_LIST_ELEMENTS_RO(list, listnode, rinfo)) { | |
2689 | RIPNG_TIMER_OFF(rinfo->t_timeout); | |
2690 | RIPNG_TIMER_OFF(rinfo->t_garbage_collect); | |
2691 | ripng_info_free(rinfo); | |
2692 | } | |
2693 | list_delete(&list); | |
2694 | rp->info = NULL; | |
2695 | agg_unlock_node(rp); | |
2696 | } | |
2697 | ||
2698 | if ((aggregate = rp->aggregate) != NULL) { | |
2699 | ripng_aggregate_free(aggregate); | |
2700 | rp->aggregate = NULL; | |
2701 | agg_unlock_node(rp); | |
2702 | } | |
2703 | } | |
2704 | ||
f9120f71 RW |
2705 | /* Flush all redistribute requests. */ |
2706 | ripng_redistribute_disable(ripng); | |
2707 | ||
dde7b15b RW |
2708 | /* Cancel the RIPng timers */ |
2709 | RIPNG_TIMER_OFF(ripng->t_update); | |
2710 | RIPNG_TIMER_OFF(ripng->t_triggered_update); | |
2711 | RIPNG_TIMER_OFF(ripng->t_triggered_interval); | |
2712 | ||
2713 | /* Cancel the read thread */ | |
b3d6bc6e | 2714 | thread_cancel(&ripng->t_read); |
dde7b15b RW |
2715 | |
2716 | /* Close the RIPng socket */ | |
2717 | if (ripng->sock >= 0) { | |
2718 | close(ripng->sock); | |
2719 | ripng->sock = -1; | |
2720 | } | |
2721 | ||
2722 | /* Clear existing peers. */ | |
2723 | list_delete_all_node(ripng->peer_list); | |
2724 | ||
2725 | ripng_zebra_vrf_deregister(vrf); | |
2726 | ||
2727 | ripng_vrf_unlink(ripng, vrf); | |
2728 | ripng->enabled = false; | |
2729 | } | |
2730 | ||
2731 | static int ripng_vrf_new(struct vrf *vrf) | |
2732 | { | |
2733 | if (IS_RIPNG_DEBUG_EVENT) | |
2734 | zlog_debug("%s: VRF created: %s(%u)", __func__, vrf->name, | |
2735 | vrf->vrf_id); | |
2736 | ||
2737 | return 0; | |
2738 | } | |
2739 | ||
2740 | static int ripng_vrf_delete(struct vrf *vrf) | |
2741 | { | |
2742 | if (IS_RIPNG_DEBUG_EVENT) | |
2743 | zlog_debug("%s: VRF deleted: %s(%u)", __func__, vrf->name, | |
2744 | vrf->vrf_id); | |
2745 | ||
2746 | return 0; | |
2747 | } | |
2748 | ||
2749 | static int ripng_vrf_enable(struct vrf *vrf) | |
2750 | { | |
2751 | struct ripng *ripng; | |
2752 | int socket; | |
2753 | ||
2754 | ripng = ripng_lookup_by_vrf_name(vrf->name); | |
be2bad2e PG |
2755 | if (!ripng) { |
2756 | char *old_vrf_name = NULL; | |
2757 | ||
2758 | ripng = (struct ripng *)vrf->info; | |
2759 | if (!ripng) | |
2760 | return 0; | |
2761 | /* update vrf name */ | |
2762 | if (ripng->vrf_name) | |
2763 | old_vrf_name = ripng->vrf_name; | |
2764 | ripng->vrf_name = XSTRDUP(MTYPE_RIPNG_VRF_NAME, vrf->name); | |
2765 | /* | |
2766 | * HACK: Change the RIPng VRF in the running configuration directly, | |
2767 | * bypassing the northbound layer. This is necessary to avoid deleting | |
2768 | * the RIPng and readding it in the new VRF, which would have | |
2769 | * several implications. | |
2770 | */ | |
2771 | if (yang_module_find("frr-ripngd") && old_vrf_name) { | |
2772 | struct lyd_node *ripng_dnode; | |
3704ff56 IR |
2773 | char oldpath[XPATH_MAXLEN]; |
2774 | char newpath[XPATH_MAXLEN]; | |
be2bad2e | 2775 | |
8685be73 RW |
2776 | ripng_dnode = yang_dnode_get( |
2777 | running_config->dnode, | |
2778 | "/frr-ripngd:ripngd/instance[vrf='%s']/vrf", | |
2779 | old_vrf_name); | |
2780 | if (ripng_dnode) { | |
3704ff56 IR |
2781 | yang_dnode_get_path(ripng_dnode->parent, oldpath, |
2782 | sizeof(oldpath)); | |
8685be73 | 2783 | yang_dnode_change_leaf(ripng_dnode, vrf->name); |
3704ff56 IR |
2784 | yang_dnode_get_path(ripng_dnode->parent, newpath, |
2785 | sizeof(newpath)); | |
2786 | nb_running_move_tree(oldpath, newpath); | |
8685be73 | 2787 | running_config->version++; |
be2bad2e | 2788 | } |
be2bad2e | 2789 | } |
e1b36e13 | 2790 | XFREE(MTYPE_RIPNG_VRF_NAME, old_vrf_name); |
be2bad2e PG |
2791 | } |
2792 | ||
2793 | if (ripng->enabled) | |
dde7b15b RW |
2794 | return 0; |
2795 | ||
2796 | if (IS_RIPNG_DEBUG_EVENT) | |
2797 | zlog_debug("%s: VRF %s(%u) enabled", __func__, vrf->name, | |
2798 | vrf->vrf_id); | |
2799 | ||
2800 | /* Activate the VRF RIPng instance. */ | |
be2bad2e PG |
2801 | socket = ripng_make_socket(vrf); |
2802 | if (socket < 0) | |
2803 | return -1; | |
dde7b15b | 2804 | |
be2bad2e | 2805 | ripng_instance_enable(ripng, vrf, socket); |
dde7b15b RW |
2806 | |
2807 | return 0; | |
2808 | } | |
2809 | ||
2810 | static int ripng_vrf_disable(struct vrf *vrf) | |
2811 | { | |
2812 | struct ripng *ripng; | |
2813 | ||
2814 | ripng = ripng_lookup_by_vrf_name(vrf->name); | |
2815 | if (!ripng || !ripng->enabled) | |
2816 | return 0; | |
2817 | ||
2818 | if (IS_RIPNG_DEBUG_EVENT) | |
2819 | zlog_debug("%s: VRF %s(%u) disabled", __func__, vrf->name, | |
2820 | vrf->vrf_id); | |
2821 | ||
2822 | /* Deactivate the VRF RIPng instance. */ | |
2823 | if (ripng->enabled) | |
2824 | ripng_instance_disable(ripng); | |
2825 | ||
2826 | return 0; | |
2827 | } | |
2828 | ||
2829 | void ripng_vrf_init(void) | |
2830 | { | |
2831 | vrf_init(ripng_vrf_new, ripng_vrf_enable, ripng_vrf_disable, | |
66bc1c49 | 2832 | ripng_vrf_delete, ripng_vrf_enable); |
dde7b15b RW |
2833 | } |
2834 | ||
2835 | void ripng_vrf_terminate(void) | |
2836 | { | |
2837 | vrf_terminate(); | |
2838 | } | |
2839 | ||
718e3744 | 2840 | /* Initialize ripng structure and set commands. */ |
4d762f26 | 2841 | void ripng_init(void) |
718e3744 | 2842 | { |
d62a17ae | 2843 | /* Install RIPNG_NODE. */ |
612c2c15 | 2844 | install_node(&cmd_ripng_node); |
718e3744 | 2845 | |
d62a17ae | 2846 | /* Install ripng commands. */ |
2847 | install_element(VIEW_NODE, &show_ipv6_ripng_cmd); | |
2848 | install_element(VIEW_NODE, &show_ipv6_ripng_status_cmd); | |
718e3744 | 2849 | |
d62a17ae | 2850 | install_default(RIPNG_NODE); |
718e3744 | 2851 | |
718e3744 | 2852 | #if 0 |
ee9216cf | 2853 | install_element (VIEW_NODE, &show_ipv6_protocols_cmd); |
718e3744 | 2854 | install_element (RIPNG_NODE, &ripng_update_timer_cmd); |
2855 | install_element (RIPNG_NODE, &no_ripng_update_timer_cmd); | |
2856 | install_element (RIPNG_NODE, &ripng_timeout_timer_cmd); | |
2857 | install_element (RIPNG_NODE, &no_ripng_timeout_timer_cmd); | |
2858 | install_element (RIPNG_NODE, &ripng_garbage_timer_cmd); | |
2859 | install_element (RIPNG_NODE, &no_ripng_garbage_timer_cmd); | |
2860 | #endif /* 0 */ | |
2861 | ||
d62a17ae | 2862 | ripng_if_init(); |
2863 | ripng_debug_init(); | |
718e3744 | 2864 | |
d62a17ae | 2865 | /* Access list install. */ |
2866 | access_list_init(); | |
2867 | access_list_add_hook(ripng_distribute_update_all_wrapper); | |
2868 | access_list_delete_hook(ripng_distribute_update_all_wrapper); | |
718e3744 | 2869 | |
d62a17ae | 2870 | /* Prefix list initialize.*/ |
2871 | prefix_list_init(); | |
2872 | prefix_list_add_hook(ripng_distribute_update_all); | |
2873 | prefix_list_delete_hook(ripng_distribute_update_all); | |
718e3744 | 2874 | |
d62a17ae | 2875 | /* Distribute list install. */ |
2876 | distribute_list_init(RIPNG_NODE); | |
718e3744 | 2877 | |
d62a17ae | 2878 | /* Route-map for interface. */ |
2879 | ripng_route_map_init(); | |
a94434b6 | 2880 | |
d62a17ae | 2881 | route_map_add_hook(ripng_routemap_update); |
2882 | route_map_delete_hook(ripng_routemap_update); | |
718e3744 | 2883 | |
d62a17ae | 2884 | if_rmap_init(RIPNG_NODE); |
718e3744 | 2885 | } |