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718e3744 | 1 | /* Router advertisement |
34ccea1e | 2 | * Copyright (C) 2016 Cumulus Networks |
7cee1bb1 | 3 | * Copyright (C) 2005 6WIND <jean-mickael.guerin@6wind.com> |
718e3744 | 4 | * Copyright (C) 1999 Kunihiro Ishiguro |
5 | * | |
6 | * This file is part of GNU Zebra. | |
7 | * | |
8 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * GNU Zebra is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
896014f4 DL |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 21 | */ |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "memory.h" | |
4a1ab8e4 | 26 | #include "zebra_memory.h" |
718e3744 | 27 | #include "sockopt.h" |
28 | #include "thread.h" | |
29 | #include "if.h" | |
4a04e5f7 | 30 | #include "stream.h" |
718e3744 | 31 | #include "log.h" |
32 | #include "prefix.h" | |
33 | #include "linklist.h" | |
34 | #include "command.h" | |
edd7c245 | 35 | #include "privs.h" |
cd80d74f | 36 | #include "vrf.h" |
fe533c56 | 37 | #include "ns.h" |
718e3744 | 38 | |
39 | #include "zebra/interface.h" | |
40 | #include "zebra/rtadv.h" | |
41 | #include "zebra/debug.h" | |
537d8ea9 | 42 | #include "zebra/rib.h" |
4b5e1359 | 43 | #include "zebra/zserv.h" |
fe18ee2d | 44 | #include "zebra/zebra_ns.h" |
7c551956 | 45 | #include "zebra/zebra_vrf.h" |
718e3744 | 46 | |
edd7c245 | 47 | extern struct zebra_privs_t zserv_privs; |
48 | ||
d62a17ae | 49 | #if defined(HAVE_RTADV) |
718e3744 | 50 | |
fa2b17e3 | 51 | #ifdef OPEN_BSD |
52 | #include <netinet/icmp6.h> | |
53 | #endif | |
54 | ||
718e3744 | 55 | /* If RFC2133 definition is used. */ |
56 | #ifndef IPV6_JOIN_GROUP | |
57 | #define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP | |
58 | #endif | |
59 | #ifndef IPV6_LEAVE_GROUP | |
60 | #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP | |
61 | #endif | |
62 | ||
63 | #define ALLNODE "ff02::1" | |
64 | #define ALLROUTER "ff02::2" | |
65 | ||
2eb27eec DL |
66 | /* Order is intentional. Matches RFC4191. This array is also used for |
67 | command matching, so only modify with care. */ | |
68 | const char *rtadv_pref_strs[] = {"medium", "high", "INVALID", "low", 0}; | |
69 | ||
d62a17ae | 70 | enum rtadv_event { |
71 | RTADV_START, | |
72 | RTADV_STOP, | |
73 | RTADV_TIMER, | |
74 | RTADV_TIMER_MSEC, | |
75 | RTADV_READ | |
76 | }; | |
718e3744 | 77 | |
d62a17ae | 78 | static void rtadv_event(struct zebra_ns *, enum rtadv_event, int); |
718e3744 | 79 | |
d62a17ae | 80 | static int if_join_all_router(int, struct interface *); |
81 | static int if_leave_all_router(int, struct interface *); | |
6b0655a2 | 82 | |
d62a17ae | 83 | static int rtadv_increment_received(struct zebra_ns *zns, ifindex_t *ifindex) |
911ad1e2 | 84 | { |
d62a17ae | 85 | int ret = -1; |
86 | struct interface *iface; | |
87 | struct zebra_if *zif; | |
88 | ||
89 | iface = if_lookup_by_index_per_ns(zns, *ifindex); | |
90 | if (iface && iface->info) { | |
91 | zif = iface->info; | |
92 | zif->ra_rcvd++; | |
93 | ret = 0; | |
94 | } | |
95 | return ret; | |
795b5abf QY |
96 | } |
97 | ||
d7c0a89a | 98 | static int rtadv_recv_packet(struct zebra_ns *zns, int sock, uint8_t *buf, |
d62a17ae | 99 | int buflen, struct sockaddr_in6 *from, |
100 | ifindex_t *ifindex, int *hoplimit) | |
718e3744 | 101 | { |
d62a17ae | 102 | int ret; |
103 | struct msghdr msg; | |
104 | struct iovec iov; | |
105 | struct cmsghdr *cmsgptr; | |
106 | struct in6_addr dst; | |
107 | ||
108 | char adata[1024]; | |
109 | ||
110 | /* Fill in message and iovec. */ | |
0af35d90 | 111 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 112 | msg.msg_name = (void *)from; |
113 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
114 | msg.msg_iov = &iov; | |
115 | msg.msg_iovlen = 1; | |
116 | msg.msg_control = (void *)adata; | |
117 | msg.msg_controllen = sizeof adata; | |
118 | iov.iov_base = buf; | |
119 | iov.iov_len = buflen; | |
120 | ||
121 | /* If recvmsg fail return minus value. */ | |
122 | ret = recvmsg(sock, &msg, 0); | |
123 | if (ret < 0) | |
124 | return ret; | |
125 | ||
126 | for (cmsgptr = ZCMSG_FIRSTHDR(&msg); cmsgptr != NULL; | |
127 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) { | |
128 | /* I want interface index which this packet comes from. */ | |
129 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
130 | && cmsgptr->cmsg_type == IPV6_PKTINFO) { | |
131 | struct in6_pktinfo *ptr; | |
132 | ||
133 | ptr = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
134 | *ifindex = ptr->ipi6_ifindex; | |
135 | memcpy(&dst, &ptr->ipi6_addr, sizeof(ptr->ipi6_addr)); | |
136 | } | |
137 | ||
138 | /* Incoming packet's hop limit. */ | |
139 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
140 | && cmsgptr->cmsg_type == IPV6_HOPLIMIT) { | |
141 | int *hoptr = (int *)CMSG_DATA(cmsgptr); | |
142 | *hoplimit = *hoptr; | |
143 | } | |
b0b709ab | 144 | } |
795b5abf | 145 | |
d62a17ae | 146 | rtadv_increment_received(zns, ifindex); |
147 | return ret; | |
718e3744 | 148 | } |
149 | ||
150 | #define RTADV_MSG_SIZE 4096 | |
151 | ||
152 | /* Send router advertisement packet. */ | |
d62a17ae | 153 | static void rtadv_send_packet(int sock, struct interface *ifp) |
718e3744 | 154 | { |
d62a17ae | 155 | struct msghdr msg; |
156 | struct iovec iov; | |
157 | struct cmsghdr *cmsgptr; | |
158 | struct in6_pktinfo *pkt; | |
159 | struct sockaddr_in6 addr; | |
160 | static void *adata = NULL; | |
161 | unsigned char buf[RTADV_MSG_SIZE]; | |
162 | struct nd_router_advert *rtadv; | |
163 | int ret; | |
164 | int len = 0; | |
165 | struct zebra_if *zif; | |
166 | struct rtadv_prefix *rprefix; | |
d7c0a89a QY |
167 | uint8_t all_nodes_addr[] = {0xff, 0x02, 0, 0, 0, 0, 0, 0, |
168 | 0, 0, 0, 0, 0, 0, 0, 1}; | |
d62a17ae | 169 | struct listnode *node; |
d7c0a89a | 170 | uint16_t pkt_RouterLifetime; |
d62a17ae | 171 | |
172 | /* | |
173 | * Allocate control message bufffer. This is dynamic because | |
174 | * CMSG_SPACE is not guaranteed not to call a function. Note that | |
175 | * the size will be different on different architectures due to | |
176 | * differing alignment rules. | |
177 | */ | |
178 | if (adata == NULL) { | |
179 | /* XXX Free on shutdown. */ | |
b8aa3767 | 180 | adata = calloc(1, CMSG_SPACE(sizeof(struct in6_pktinfo))); |
d62a17ae | 181 | |
b8aa3767 | 182 | if (adata == NULL) { |
d62a17ae | 183 | zlog_err( |
184 | "rtadv_send_packet: can't malloc control data"); | |
b8aa3767 DS |
185 | exit(-1); |
186 | } | |
d62a17ae | 187 | } |
188 | ||
189 | /* Logging of packet. */ | |
190 | if (IS_ZEBRA_DEBUG_PACKET) | |
191 | zlog_debug("%s(%u): Tx RA, socket %u", ifp->name, ifp->ifindex, | |
192 | sock); | |
193 | ||
194 | /* Fill in sockaddr_in6. */ | |
195 | memset(&addr, 0, sizeof(struct sockaddr_in6)); | |
196 | addr.sin6_family = AF_INET6; | |
718e3744 | 197 | #ifdef SIN6_LEN |
d62a17ae | 198 | addr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 199 | #endif /* SIN6_LEN */ |
d62a17ae | 200 | addr.sin6_port = htons(IPPROTO_ICMPV6); |
201 | IPV6_ADDR_COPY(&addr.sin6_addr, all_nodes_addr); | |
202 | ||
203 | /* Fetch interface information. */ | |
204 | zif = ifp->info; | |
205 | ||
206 | /* Make router advertisement message. */ | |
207 | rtadv = (struct nd_router_advert *)buf; | |
208 | ||
209 | rtadv->nd_ra_type = ND_ROUTER_ADVERT; | |
210 | rtadv->nd_ra_code = 0; | |
211 | rtadv->nd_ra_cksum = 0; | |
212 | ||
213 | rtadv->nd_ra_curhoplimit = 64; | |
214 | ||
215 | /* RFC4191: Default Router Preference is 0 if Router Lifetime is 0. */ | |
216 | rtadv->nd_ra_flags_reserved = zif->rtadv.AdvDefaultLifetime == 0 | |
217 | ? 0 | |
218 | : zif->rtadv.DefaultPreference; | |
219 | rtadv->nd_ra_flags_reserved <<= 3; | |
220 | ||
221 | if (zif->rtadv.AdvManagedFlag) | |
222 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_MANAGED; | |
223 | if (zif->rtadv.AdvOtherConfigFlag) | |
224 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_OTHER; | |
225 | if (zif->rtadv.AdvHomeAgentFlag) | |
226 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_HOME_AGENT; | |
227 | /* Note that according to Neighbor Discovery (RFC 4861 [18]), | |
228 | * AdvDefaultLifetime is by default based on the value of | |
229 | * MaxRtrAdvInterval. AdvDefaultLifetime is used in the Router Lifetime | |
230 | * field of Router Advertisements. Given that this field is expressed | |
231 | * in seconds, a small MaxRtrAdvInterval value can result in a zero | |
232 | * value for this field. To prevent this, routers SHOULD keep | |
233 | * AdvDefaultLifetime in at least one second, even if the use of | |
234 | * MaxRtrAdvInterval would result in a smaller value. -- RFC6275, 7.5 */ | |
235 | pkt_RouterLifetime = | |
236 | zif->rtadv.AdvDefaultLifetime != -1 | |
237 | ? zif->rtadv.AdvDefaultLifetime | |
238 | : MAX(1, 0.003 * zif->rtadv.MaxRtrAdvInterval); | |
239 | rtadv->nd_ra_router_lifetime = htons(pkt_RouterLifetime); | |
240 | rtadv->nd_ra_reachable = htonl(zif->rtadv.AdvReachableTime); | |
241 | rtadv->nd_ra_retransmit = htonl(0); | |
242 | ||
243 | len = sizeof(struct nd_router_advert); | |
244 | ||
245 | /* If both the Home Agent Preference and Home Agent Lifetime are set to | |
246 | * their default values specified above, this option SHOULD NOT be | |
247 | * included in the Router Advertisement messages sent by this home | |
248 | * agent. -- RFC6275, 7.4 */ | |
249 | if (zif->rtadv.AdvHomeAgentFlag | |
250 | && (zif->rtadv.HomeAgentPreference | |
251 | || zif->rtadv.HomeAgentLifetime != -1)) { | |
252 | struct nd_opt_homeagent_info *ndopt_hai = | |
253 | (struct nd_opt_homeagent_info *)(buf + len); | |
254 | ndopt_hai->nd_opt_hai_type = ND_OPT_HA_INFORMATION; | |
255 | ndopt_hai->nd_opt_hai_len = 1; | |
256 | ndopt_hai->nd_opt_hai_reserved = 0; | |
257 | ndopt_hai->nd_opt_hai_preference = | |
258 | htons(zif->rtadv.HomeAgentPreference); | |
259 | /* 16-bit unsigned integer. The lifetime associated with the | |
260 | * home | |
261 | * agent in units of seconds. The default value is the same as | |
262 | * the | |
263 | * Router Lifetime, as specified in the main body of the Router | |
264 | * Advertisement. The maximum value corresponds to 18.2 hours. | |
265 | * A | |
266 | * value of 0 MUST NOT be used. -- RFC6275, 7.5 */ | |
267 | ndopt_hai->nd_opt_hai_lifetime = | |
268 | htons(zif->rtadv.HomeAgentLifetime != -1 | |
269 | ? zif->rtadv.HomeAgentLifetime | |
270 | : MAX(1, pkt_RouterLifetime) /* 0 is OK | |
271 | for RL, | |
272 | but not | |
273 | for HAL*/ | |
9d303b37 | 274 | ); |
d62a17ae | 275 | len += sizeof(struct nd_opt_homeagent_info); |
276 | } | |
718e3744 | 277 | |
d62a17ae | 278 | if (zif->rtadv.AdvIntervalOption) { |
279 | struct nd_opt_adv_interval *ndopt_adv = | |
280 | (struct nd_opt_adv_interval *)(buf + len); | |
281 | ndopt_adv->nd_opt_ai_type = ND_OPT_ADV_INTERVAL; | |
282 | ndopt_adv->nd_opt_ai_len = 1; | |
283 | ndopt_adv->nd_opt_ai_reserved = 0; | |
284 | ndopt_adv->nd_opt_ai_interval = | |
285 | htonl(zif->rtadv.MaxRtrAdvInterval); | |
286 | len += sizeof(struct nd_opt_adv_interval); | |
287 | } | |
288 | ||
289 | /* Fill in prefix. */ | |
290 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
291 | struct nd_opt_prefix_info *pinfo; | |
718e3744 | 292 | |
d62a17ae | 293 | pinfo = (struct nd_opt_prefix_info *)(buf + len); |
718e3744 | 294 | |
d62a17ae | 295 | pinfo->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION; |
296 | pinfo->nd_opt_pi_len = 4; | |
297 | pinfo->nd_opt_pi_prefix_len = rprefix->prefix.prefixlen; | |
298 | ||
299 | pinfo->nd_opt_pi_flags_reserved = 0; | |
300 | if (rprefix->AdvOnLinkFlag) | |
301 | pinfo->nd_opt_pi_flags_reserved |= | |
302 | ND_OPT_PI_FLAG_ONLINK; | |
303 | if (rprefix->AdvAutonomousFlag) | |
304 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_AUTO; | |
305 | if (rprefix->AdvRouterAddressFlag) | |
306 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_RADDR; | |
307 | ||
308 | pinfo->nd_opt_pi_valid_time = htonl(rprefix->AdvValidLifetime); | |
309 | pinfo->nd_opt_pi_preferred_time = | |
310 | htonl(rprefix->AdvPreferredLifetime); | |
311 | pinfo->nd_opt_pi_reserved2 = 0; | |
312 | ||
313 | IPV6_ADDR_COPY(&pinfo->nd_opt_pi_prefix, | |
314 | &rprefix->prefix.prefix); | |
315 | ||
316 | #ifdef DEBUG | |
317 | { | |
d7c0a89a | 318 | uint8_t buf[INET6_ADDRSTRLEN]; |
d62a17ae | 319 | |
320 | zlog_debug("DEBUG %s", | |
321 | inet_ntop(AF_INET6, &pinfo->nd_opt_pi_prefix, | |
322 | buf, INET6_ADDRSTRLEN)); | |
323 | } | |
718e3744 | 324 | #endif /* DEBUG */ |
325 | ||
d62a17ae | 326 | len += sizeof(struct nd_opt_prefix_info); |
327 | } | |
328 | ||
329 | /* Hardware address. */ | |
330 | if (ifp->hw_addr_len != 0) { | |
331 | buf[len++] = ND_OPT_SOURCE_LINKADDR; | |
332 | ||
333 | /* Option length should be rounded up to next octet if | |
334 | the link address does not end on an octet boundary. */ | |
335 | buf[len++] = (ifp->hw_addr_len + 9) >> 3; | |
336 | ||
337 | memcpy(buf + len, ifp->hw_addr, ifp->hw_addr_len); | |
338 | len += ifp->hw_addr_len; | |
339 | ||
340 | /* Pad option to end on an octet boundary. */ | |
341 | memset(buf + len, 0, -(ifp->hw_addr_len + 2) & 0x7); | |
342 | len += -(ifp->hw_addr_len + 2) & 0x7; | |
343 | } | |
344 | ||
345 | /* MTU */ | |
346 | if (zif->rtadv.AdvLinkMTU) { | |
347 | struct nd_opt_mtu *opt = (struct nd_opt_mtu *)(buf + len); | |
348 | opt->nd_opt_mtu_type = ND_OPT_MTU; | |
349 | opt->nd_opt_mtu_len = 1; | |
350 | opt->nd_opt_mtu_reserved = 0; | |
351 | opt->nd_opt_mtu_mtu = htonl(zif->rtadv.AdvLinkMTU); | |
352 | len += sizeof(struct nd_opt_mtu); | |
353 | } | |
354 | ||
355 | msg.msg_name = (void *)&addr; | |
356 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
357 | msg.msg_iov = &iov; | |
358 | msg.msg_iovlen = 1; | |
359 | msg.msg_control = (void *)adata; | |
360 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
361 | msg.msg_flags = 0; | |
362 | iov.iov_base = buf; | |
363 | iov.iov_len = len; | |
364 | ||
365 | cmsgptr = ZCMSG_FIRSTHDR(&msg); | |
366 | cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
367 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
368 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
369 | ||
370 | pkt = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
371 | memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); | |
372 | pkt->ipi6_ifindex = ifp->ifindex; | |
373 | ||
374 | ret = sendmsg(sock, &msg, 0); | |
375 | if (ret < 0) { | |
376 | zlog_err("%s(%u): Tx RA failed, socket %u error %d (%s)", | |
377 | ifp->name, ifp->ifindex, sock, errno, | |
378 | safe_strerror(errno)); | |
379 | } else | |
380 | zif->ra_sent++; | |
718e3744 | 381 | } |
382 | ||
d62a17ae | 383 | static int rtadv_timer(struct thread *thread) |
718e3744 | 384 | { |
d62a17ae | 385 | struct zebra_ns *zns = THREAD_ARG(thread); |
386 | struct vrf *vrf; | |
d62a17ae | 387 | struct interface *ifp; |
388 | struct zebra_if *zif; | |
389 | int period; | |
390 | ||
391 | zns->rtadv.ra_timer = NULL; | |
392 | if (zns->rtadv.adv_msec_if_count == 0) { | |
393 | period = 1000; /* 1 s */ | |
394 | rtadv_event(zns, RTADV_TIMER, 1 /* 1 s */); | |
395 | } else { | |
396 | period = 10; /* 10 ms */ | |
397 | rtadv_event(zns, RTADV_TIMER_MSEC, 10 /* 10 ms */); | |
398 | } | |
399 | ||
a2addae8 | 400 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) |
451fda4f | 401 | FOR_ALL_INTERFACES (vrf, ifp) { |
a2addae8 RW |
402 | if (if_is_loopback(ifp) |
403 | || CHECK_FLAG(ifp->status, | |
404 | ZEBRA_INTERFACE_VRF_LOOPBACK) | |
405 | || !if_is_operative(ifp)) | |
406 | continue; | |
407 | ||
408 | zif = ifp->info; | |
409 | ||
410 | if (zif->rtadv.AdvSendAdvertisements) { | |
411 | if (zif->rtadv.inFastRexmit) { | |
412 | /* We assume we fast rexmit every sec so | |
413 | * no | |
414 | * additional vars */ | |
415 | if (--zif->rtadv.NumFastReXmitsRemain | |
416 | <= 0) | |
417 | zif->rtadv.inFastRexmit = 0; | |
418 | ||
419 | if (IS_ZEBRA_DEBUG_SEND) | |
420 | zlog_debug( | |
421 | "Fast RA Rexmit on interface %s", | |
422 | ifp->name); | |
423 | ||
d62a17ae | 424 | rtadv_send_packet(zns->rtadv.sock, ifp); |
a2addae8 RW |
425 | } else { |
426 | zif->rtadv.AdvIntervalTimer -= period; | |
427 | if (zif->rtadv.AdvIntervalTimer <= 0) { | |
428 | /* FIXME: using | |
429 | MaxRtrAdvInterval each | |
430 | time isn't what section | |
431 | 6.2.4 of RFC4861 tells to do. | |
432 | */ | |
433 | zif->rtadv.AdvIntervalTimer = | |
434 | zif->rtadv | |
435 | .MaxRtrAdvInterval; | |
436 | rtadv_send_packet( | |
437 | zns->rtadv.sock, ifp); | |
438 | } | |
d62a17ae | 439 | } |
440 | } | |
441 | } | |
d62a17ae | 442 | |
443 | return 0; | |
718e3744 | 444 | } |
445 | ||
d62a17ae | 446 | static void rtadv_process_solicit(struct interface *ifp) |
718e3744 | 447 | { |
d62a17ae | 448 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); |
449 | struct zebra_ns *zns = zvrf->zns; | |
718e3744 | 450 | |
d62a17ae | 451 | assert(zns); |
452 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
718e3744 | 453 | } |
454 | ||
d7c0a89a | 455 | static void rtadv_process_advert(uint8_t *msg, unsigned int len, |
d62a17ae | 456 | struct interface *ifp, |
457 | struct sockaddr_in6 *addr) | |
718e3744 | 458 | { |
d62a17ae | 459 | struct nd_router_advert *radvert; |
460 | char addr_str[INET6_ADDRSTRLEN]; | |
461 | struct zebra_if *zif; | |
462 | struct prefix p; | |
718e3744 | 463 | |
d62a17ae | 464 | zif = ifp->info; |
a80beece | 465 | |
d62a17ae | 466 | inet_ntop(AF_INET6, &addr->sin6_addr, addr_str, INET6_ADDRSTRLEN); |
467 | ||
468 | if (len < sizeof(struct nd_router_advert)) { | |
469 | zlog_warn("%s(%u): Rx RA with invalid length %d from %s", | |
470 | ifp->name, ifp->ifindex, len, addr_str); | |
471 | return; | |
472 | } | |
473 | if (!IN6_IS_ADDR_LINKLOCAL(&addr->sin6_addr)) { | |
474 | zlog_warn( | |
475 | "%s(%u): Rx RA with non-linklocal source address from %s", | |
476 | ifp->name, ifp->ifindex, addr_str); | |
477 | return; | |
478 | } | |
479 | ||
480 | radvert = (struct nd_router_advert *)msg; | |
481 | ||
482 | if ((radvert->nd_ra_curhoplimit && zif->rtadv.AdvCurHopLimit) | |
483 | && (radvert->nd_ra_curhoplimit != zif->rtadv.AdvCurHopLimit)) { | |
484 | zlog_warn( | |
485 | "%s(%u): Rx RA - our AdvCurHopLimit doesn't agree with %s", | |
486 | ifp->name, ifp->ifindex, addr_str); | |
487 | } | |
488 | ||
489 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED) | |
490 | && !zif->rtadv.AdvManagedFlag) { | |
491 | zlog_warn( | |
492 | "%s(%u): Rx RA - our AdvManagedFlag doesn't agree with %s", | |
493 | ifp->name, ifp->ifindex, addr_str); | |
494 | } | |
495 | ||
496 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_OTHER) | |
497 | && !zif->rtadv.AdvOtherConfigFlag) { | |
498 | zlog_warn( | |
499 | "%s(%u): Rx RA - our AdvOtherConfigFlag doesn't agree with %s", | |
500 | ifp->name, ifp->ifindex, addr_str); | |
501 | } | |
502 | ||
503 | if ((radvert->nd_ra_reachable && zif->rtadv.AdvReachableTime) | |
504 | && (ntohl(radvert->nd_ra_reachable) | |
505 | != zif->rtadv.AdvReachableTime)) { | |
506 | zlog_warn( | |
507 | "%s(%u): Rx RA - our AdvReachableTime doesn't agree with %s", | |
508 | ifp->name, ifp->ifindex, addr_str); | |
509 | } | |
510 | ||
511 | if ((radvert->nd_ra_retransmit && zif->rtadv.AdvRetransTimer) | |
512 | && (ntohl(radvert->nd_ra_retransmit) | |
513 | != (unsigned int)zif->rtadv.AdvRetransTimer)) { | |
514 | zlog_warn( | |
515 | "%s(%u): Rx RA - our AdvRetransTimer doesn't agree with %s", | |
516 | ifp->name, ifp->ifindex, addr_str); | |
517 | } | |
518 | ||
519 | /* Create entry for neighbor if not known. */ | |
520 | p.family = AF_INET6; | |
521 | IPV6_ADDR_COPY(&p.u.prefix, &addr->sin6_addr); | |
522 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
523 | ||
524 | if (!nbr_connected_check(ifp, &p)) | |
525 | nbr_connected_add_ipv6(ifp, &addr->sin6_addr); | |
718e3744 | 526 | } |
527 | ||
d62a17ae | 528 | |
d7c0a89a | 529 | static void rtadv_process_packet(uint8_t *buf, unsigned int len, |
d62a17ae | 530 | ifindex_t ifindex, int hoplimit, |
531 | struct sockaddr_in6 *from, | |
532 | struct zebra_ns *zns) | |
718e3744 | 533 | { |
d62a17ae | 534 | struct icmp6_hdr *icmph; |
535 | struct interface *ifp; | |
536 | struct zebra_if *zif; | |
537 | char addr_str[INET6_ADDRSTRLEN]; | |
538 | ||
539 | inet_ntop(AF_INET6, &from->sin6_addr, addr_str, INET6_ADDRSTRLEN); | |
540 | ||
541 | /* Interface search. */ | |
542 | ifp = if_lookup_by_index_per_ns(zns, ifindex); | |
543 | if (ifp == NULL) { | |
544 | zlog_warn("RA/RS received on unknown IF %u from %s", ifindex, | |
545 | addr_str); | |
546 | return; | |
547 | } | |
548 | ||
549 | if (IS_ZEBRA_DEBUG_PACKET) | |
550 | zlog_debug("%s(%u): Rx RA/RS len %d from %s", ifp->name, | |
551 | ifp->ifindex, len, addr_str); | |
552 | ||
553 | if (if_is_loopback(ifp) | |
554 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) | |
555 | return; | |
718e3744 | 556 | |
d62a17ae | 557 | /* Check interface configuration. */ |
558 | zif = ifp->info; | |
559 | if (!zif->rtadv.AdvSendAdvertisements) | |
560 | return; | |
718e3744 | 561 | |
d62a17ae | 562 | /* ICMP message length check. */ |
563 | if (len < sizeof(struct icmp6_hdr)) { | |
564 | zlog_warn("%s(%u): Rx RA with Invalid ICMPV6 packet length %d", | |
565 | ifp->name, ifp->ifindex, len); | |
566 | return; | |
567 | } | |
568 | ||
569 | icmph = (struct icmp6_hdr *)buf; | |
718e3744 | 570 | |
d62a17ae | 571 | /* ICMP message type check. */ |
572 | if (icmph->icmp6_type != ND_ROUTER_SOLICIT | |
573 | && icmph->icmp6_type != ND_ROUTER_ADVERT) { | |
574 | zlog_warn("%s(%u): Rx RA - Unwanted ICMPV6 message type %d", | |
575 | ifp->name, ifp->ifindex, icmph->icmp6_type); | |
576 | return; | |
577 | } | |
718e3744 | 578 | |
d62a17ae | 579 | /* Hoplimit check. */ |
580 | if (hoplimit >= 0 && hoplimit != 255) { | |
581 | zlog_warn("%s(%u): Rx RA - Invalid hoplimit %d", ifp->name, | |
582 | ifp->ifindex, hoplimit); | |
583 | return; | |
584 | } | |
718e3744 | 585 | |
d62a17ae | 586 | /* Check ICMP message type. */ |
587 | if (icmph->icmp6_type == ND_ROUTER_SOLICIT) | |
588 | rtadv_process_solicit(ifp); | |
589 | else if (icmph->icmp6_type == ND_ROUTER_ADVERT) | |
590 | rtadv_process_advert(buf, len, ifp, from); | |
718e3744 | 591 | |
d62a17ae | 592 | return; |
718e3744 | 593 | } |
594 | ||
d62a17ae | 595 | static int rtadv_read(struct thread *thread) |
718e3744 | 596 | { |
d62a17ae | 597 | int sock; |
598 | int len; | |
d7c0a89a | 599 | uint8_t buf[RTADV_MSG_SIZE]; |
d62a17ae | 600 | struct sockaddr_in6 from; |
601 | ifindex_t ifindex = 0; | |
602 | int hoplimit = -1; | |
603 | struct zebra_ns *zns = THREAD_ARG(thread); | |
604 | ||
605 | sock = THREAD_FD(thread); | |
606 | zns->rtadv.ra_read = NULL; | |
607 | ||
608 | /* Register myself. */ | |
609 | rtadv_event(zns, RTADV_READ, sock); | |
610 | ||
611 | len = rtadv_recv_packet(zns, sock, buf, sizeof(buf), &from, &ifindex, | |
612 | &hoplimit); | |
613 | ||
614 | if (len < 0) { | |
615 | zlog_warn("RA/RS recv failed, socket %u error %s", sock, | |
616 | safe_strerror(errno)); | |
617 | return len; | |
618 | } | |
619 | ||
620 | rtadv_process_packet(buf, (unsigned)len, ifindex, hoplimit, &from, zns); | |
621 | ||
622 | return 0; | |
718e3744 | 623 | } |
6b0655a2 | 624 | |
fe533c56 | 625 | static int rtadv_make_socket(ns_id_t ns_id) |
718e3744 | 626 | { |
d62a17ae | 627 | int sock; |
628 | int ret = 0; | |
629 | struct icmp6_filter filter; | |
630 | ||
631 | if (zserv_privs.change(ZPRIVS_RAISE)) | |
632 | zlog_err("rtadv_make_socket: could not raise privs, %s", | |
633 | safe_strerror(errno)); | |
634 | ||
fe533c56 | 635 | sock = ns_socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6, ns_id); |
d62a17ae | 636 | |
637 | if (zserv_privs.change(ZPRIVS_LOWER)) | |
638 | zlog_err("rtadv_make_socket: could not lower privs, %s", | |
639 | safe_strerror(errno)); | |
640 | ||
641 | if (sock < 0) { | |
d62a17ae | 642 | return -1; |
643 | } | |
644 | ||
645 | ret = setsockopt_ipv6_pktinfo(sock, 1); | |
646 | if (ret < 0) { | |
647 | close(sock); | |
648 | return ret; | |
649 | } | |
650 | ret = setsockopt_ipv6_multicast_loop(sock, 0); | |
651 | if (ret < 0) { | |
652 | close(sock); | |
653 | return ret; | |
654 | } | |
655 | ret = setsockopt_ipv6_unicast_hops(sock, 255); | |
656 | if (ret < 0) { | |
657 | close(sock); | |
658 | return ret; | |
659 | } | |
660 | ret = setsockopt_ipv6_multicast_hops(sock, 255); | |
661 | if (ret < 0) { | |
662 | close(sock); | |
663 | return ret; | |
664 | } | |
665 | ret = setsockopt_ipv6_hoplimit(sock, 1); | |
666 | if (ret < 0) { | |
667 | close(sock); | |
668 | return ret; | |
669 | } | |
670 | ||
671 | ICMP6_FILTER_SETBLOCKALL(&filter); | |
672 | ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter); | |
673 | ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter); | |
674 | ||
675 | ret = setsockopt(sock, IPPROTO_ICMPV6, ICMP6_FILTER, &filter, | |
676 | sizeof(struct icmp6_filter)); | |
677 | if (ret < 0) { | |
678 | zlog_info("ICMP6_FILTER set fail: %s", safe_strerror(errno)); | |
44f12f20 | 679 | close(sock); |
d62a17ae | 680 | return ret; |
681 | } | |
682 | ||
683 | return sock; | |
718e3744 | 684 | } |
685 | ||
d62a17ae | 686 | static struct rtadv_prefix *rtadv_prefix_new(void) |
718e3744 | 687 | { |
d62a17ae | 688 | return XCALLOC(MTYPE_RTADV_PREFIX, sizeof(struct rtadv_prefix)); |
718e3744 | 689 | } |
690 | ||
d62a17ae | 691 | static void rtadv_prefix_free(struct rtadv_prefix *rtadv_prefix) |
718e3744 | 692 | { |
d62a17ae | 693 | XFREE(MTYPE_RTADV_PREFIX, rtadv_prefix); |
694 | } | |
718e3744 | 695 | |
d62a17ae | 696 | static struct rtadv_prefix *rtadv_prefix_lookup(struct list *rplist, |
697 | struct prefix_ipv6 *p) | |
698 | { | |
699 | struct listnode *node; | |
700 | struct rtadv_prefix *rprefix; | |
701 | ||
702 | for (ALL_LIST_ELEMENTS_RO(rplist, node, rprefix)) | |
703 | if (prefix_same((struct prefix *)&rprefix->prefix, | |
704 | (struct prefix *)p)) | |
705 | return rprefix; | |
706 | return NULL; | |
718e3744 | 707 | } |
708 | ||
d62a17ae | 709 | static struct rtadv_prefix *rtadv_prefix_get(struct list *rplist, |
710 | struct prefix_ipv6 *p) | |
718e3744 | 711 | { |
d62a17ae | 712 | struct rtadv_prefix *rprefix; |
713 | ||
714 | rprefix = rtadv_prefix_lookup(rplist, p); | |
715 | if (rprefix) | |
716 | return rprefix; | |
718e3744 | 717 | |
d62a17ae | 718 | rprefix = rtadv_prefix_new(); |
719 | memcpy(&rprefix->prefix, p, sizeof(struct prefix_ipv6)); | |
720 | listnode_add(rplist, rprefix); | |
718e3744 | 721 | |
d62a17ae | 722 | return rprefix; |
718e3744 | 723 | } |
724 | ||
d62a17ae | 725 | static void rtadv_prefix_set(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 726 | { |
d62a17ae | 727 | struct rtadv_prefix *rprefix; |
728 | ||
729 | rprefix = rtadv_prefix_get(zif->rtadv.AdvPrefixList, &rp->prefix); | |
730 | ||
731 | /* Set parameters. */ | |
732 | rprefix->AdvValidLifetime = rp->AdvValidLifetime; | |
733 | rprefix->AdvPreferredLifetime = rp->AdvPreferredLifetime; | |
734 | rprefix->AdvOnLinkFlag = rp->AdvOnLinkFlag; | |
735 | rprefix->AdvAutonomousFlag = rp->AdvAutonomousFlag; | |
736 | rprefix->AdvRouterAddressFlag = rp->AdvRouterAddressFlag; | |
718e3744 | 737 | } |
738 | ||
d62a17ae | 739 | static int rtadv_prefix_reset(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 740 | { |
d62a17ae | 741 | struct rtadv_prefix *rprefix; |
742 | ||
743 | rprefix = rtadv_prefix_lookup(zif->rtadv.AdvPrefixList, &rp->prefix); | |
744 | if (rprefix != NULL) { | |
745 | listnode_delete(zif->rtadv.AdvPrefixList, (void *)rprefix); | |
746 | rtadv_prefix_free(rprefix); | |
747 | return 1; | |
748 | } else | |
749 | return 0; | |
718e3744 | 750 | } |
751 | ||
d62a17ae | 752 | static void ipv6_nd_suppress_ra_set(struct interface *ifp, |
753 | ipv6_nd_suppress_ra_status status) | |
b6120505 | 754 | { |
d62a17ae | 755 | struct zebra_if *zif; |
756 | struct zebra_vrf *zvrf; | |
757 | struct zebra_ns *zns; | |
758 | ||
759 | zif = ifp->info; | |
760 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
761 | zns = zvrf->zns; | |
762 | ||
763 | if (status == RA_SUPPRESS) { | |
764 | /* RA is currently enabled */ | |
765 | if (zif->rtadv.AdvSendAdvertisements) { | |
766 | zif->rtadv.AdvSendAdvertisements = 0; | |
767 | zif->rtadv.AdvIntervalTimer = 0; | |
768 | zns->rtadv.adv_if_count--; | |
769 | ||
770 | if_leave_all_router(zns->rtadv.sock, ifp); | |
771 | ||
772 | if (zns->rtadv.adv_if_count == 0) | |
773 | rtadv_event(zns, RTADV_STOP, 0); | |
774 | } | |
775 | } else { | |
776 | if (!zif->rtadv.AdvSendAdvertisements) { | |
777 | zif->rtadv.AdvSendAdvertisements = 1; | |
778 | zif->rtadv.AdvIntervalTimer = 0; | |
779 | zns->rtadv.adv_if_count++; | |
780 | ||
781 | if (zif->rtadv.MaxRtrAdvInterval >= 1000) { | |
782 | /* Enable Fast RA only when RA interval is in | |
783 | * secs */ | |
784 | zif->rtadv.inFastRexmit = 1; | |
785 | zif->rtadv.NumFastReXmitsRemain = | |
786 | RTADV_NUM_FAST_REXMITS; | |
787 | } | |
788 | ||
789 | if_join_all_router(zns->rtadv.sock, ifp); | |
790 | ||
791 | if (zns->rtadv.adv_if_count == 1) | |
792 | rtadv_event(zns, RTADV_START, zns->rtadv.sock); | |
793 | } | |
794 | } | |
b6120505 DW |
795 | } |
796 | ||
4a04e5f7 | 797 | /* |
798 | * Handle client (BGP) message to enable or disable IPv6 RA on an interface. | |
799 | * Note that while the client could request RA on an interface on which the | |
800 | * operator has not enabled RA, RA won't be disabled upon client request | |
5c81b96a | 801 | * if the operator has explicitly enabled RA. The enable request can also |
802 | * specify a RA interval (in seconds). | |
4a04e5f7 | 803 | */ |
1002497a | 804 | static void zebra_interface_radv_set(ZAPI_HANDLER_ARGS, int enable) |
4a04e5f7 | 805 | { |
d62a17ae | 806 | struct stream *s; |
ec93aa12 | 807 | ifindex_t ifindex; |
d62a17ae | 808 | struct interface *ifp; |
809 | struct zebra_if *zif; | |
810 | int ra_interval; | |
811 | ||
1002497a | 812 | s = msg; |
d62a17ae | 813 | |
814 | /* Get interface index and RA interval. */ | |
ec93aa12 DS |
815 | STREAM_GETL(s, ifindex); |
816 | STREAM_GETL(s, ra_interval); | |
d62a17ae | 817 | |
818 | if (IS_ZEBRA_DEBUG_EVENT) | |
819 | zlog_debug("%u: IF %u RA %s from client %s, interval %ds", | |
1002497a QY |
820 | zvrf_id(zvrf), ifindex, |
821 | enable ? "enable" : "disable", | |
d62a17ae | 822 | zebra_route_string(client->proto), ra_interval); |
823 | ||
824 | /* Locate interface and check VRF match. */ | |
825 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex); | |
826 | if (!ifp) { | |
827 | zlog_warn("%u: IF %u RA %s client %s - interface unknown", | |
1002497a | 828 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", |
d62a17ae | 829 | zebra_route_string(client->proto)); |
830 | return; | |
831 | } | |
832 | if (ifp->vrf_id != zvrf_id(zvrf)) { | |
833 | zlog_warn("%u: IF %u RA %s client %s - VRF mismatch, IF VRF %u", | |
1002497a | 834 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", |
d62a17ae | 835 | zebra_route_string(client->proto), ifp->vrf_id); |
836 | return; | |
837 | } | |
838 | ||
839 | zif = ifp->info; | |
1002497a | 840 | if (enable) { |
3ea48364 | 841 | SET_FLAG(zif->rtadv.ra_configured, BGP_RA_CONFIGURED); |
d62a17ae | 842 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); |
843 | if (ra_interval | |
996c9314 LB |
844 | && (ra_interval * 1000) < zif->rtadv.MaxRtrAdvInterval |
845 | && !CHECK_FLAG(zif->rtadv.ra_configured, | |
846 | VTY_RA_INTERVAL_CONFIGURED)) | |
d62a17ae | 847 | zif->rtadv.MaxRtrAdvInterval = ra_interval * 1000; |
848 | } else { | |
3ea48364 DS |
849 | UNSET_FLAG(zif->rtadv.ra_configured, BGP_RA_CONFIGURED); |
850 | if (!CHECK_FLAG(zif->rtadv.ra_configured, | |
851 | VTY_RA_INTERVAL_CONFIGURED)) | |
d62a17ae | 852 | zif->rtadv.MaxRtrAdvInterval = |
853 | RTADV_MAX_RTR_ADV_INTERVAL; | |
3ea48364 | 854 | if (!CHECK_FLAG(zif->rtadv.ra_configured, VTY_RA_CONFIGURED)) |
d62a17ae | 855 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); |
d62a17ae | 856 | } |
ec93aa12 DS |
857 | stream_failure: |
858 | return; | |
4a04e5f7 | 859 | } |
860 | ||
89f4e507 QY |
861 | void zebra_interface_radv_disable(ZAPI_HANDLER_ARGS) |
862 | { | |
1002497a | 863 | zebra_interface_radv_set(client, hdr, msg, zvrf, 0); |
89f4e507 | 864 | } |
89f4e507 QY |
865 | void zebra_interface_radv_enable(ZAPI_HANDLER_ARGS) |
866 | { | |
1002497a | 867 | zebra_interface_radv_set(client, hdr, msg, zvrf, 1); |
89f4e507 QY |
868 | } |
869 | ||
718e3744 | 870 | DEFUN (ipv6_nd_suppress_ra, |
871 | ipv6_nd_suppress_ra_cmd, | |
872 | "ipv6 nd suppress-ra", | |
3e31cded | 873 | "Interface IPv6 config commands\n" |
718e3744 | 874 | "Neighbor discovery\n" |
875 | "Suppress Router Advertisement\n") | |
876 | { | |
d62a17ae | 877 | VTY_DECLVAR_CONTEXT(interface, ifp); |
878 | struct zebra_if *zif = ifp->info; | |
879 | ||
880 | if (if_is_loopback(ifp) | |
881 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
882 | vty_out(vty, | |
883 | "Cannot configure IPv6 Router Advertisements on this interface\n"); | |
884 | return CMD_WARNING_CONFIG_FAILED; | |
885 | } | |
886 | ||
3ea48364 DS |
887 | if (!CHECK_FLAG(zif->rtadv.ra_configured, BGP_RA_CONFIGURED)) |
888 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); | |
889 | ||
890 | UNSET_FLAG(zif->rtadv.ra_configured, VTY_RA_CONFIGURED); | |
d62a17ae | 891 | return CMD_SUCCESS; |
718e3744 | 892 | } |
893 | ||
718e3744 | 894 | DEFUN (no_ipv6_nd_suppress_ra, |
895 | no_ipv6_nd_suppress_ra_cmd, | |
896 | "no ipv6 nd suppress-ra", | |
897 | NO_STR | |
3e31cded | 898 | "Interface IPv6 config commands\n" |
718e3744 | 899 | "Neighbor discovery\n" |
900 | "Suppress Router Advertisement\n") | |
901 | { | |
d62a17ae | 902 | VTY_DECLVAR_CONTEXT(interface, ifp); |
903 | struct zebra_if *zif = ifp->info; | |
904 | ||
905 | if (if_is_loopback(ifp) | |
906 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
907 | vty_out(vty, | |
908 | "Cannot configure IPv6 Router Advertisements on this interface\n"); | |
909 | return CMD_WARNING_CONFIG_FAILED; | |
910 | } | |
911 | ||
912 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); | |
3ea48364 | 913 | SET_FLAG(zif->rtadv.ra_configured, VTY_RA_CONFIGURED); |
d62a17ae | 914 | return CMD_SUCCESS; |
718e3744 | 915 | } |
916 | ||
7cee1bb1 | 917 | DEFUN (ipv6_nd_ra_interval_msec, |
918 | ipv6_nd_ra_interval_msec_cmd, | |
6147e2c6 | 919 | "ipv6 nd ra-interval msec (70-1800000)", |
7cee1bb1 | 920 | "Interface IPv6 config commands\n" |
921 | "Neighbor discovery\n" | |
922 | "Router Advertisement interval\n" | |
3a2d747c | 923 | "Router Advertisement interval in milliseconds\n" |
7cee1bb1 | 924 | "Router Advertisement interval in milliseconds\n") |
925 | { | |
d62a17ae | 926 | int idx_number = 4; |
927 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
928 | unsigned interval; | |
929 | struct zebra_if *zif = ifp->info; | |
930 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); | |
931 | struct zebra_ns *zns; | |
932 | ||
933 | zns = zvrf->zns; | |
934 | interval = strtoul(argv[idx_number]->arg, NULL, 10); | |
935 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
936 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime * 1000)) { | |
937 | vty_out(vty, | |
938 | "This ra-interval would conflict with configured ra-lifetime!\n"); | |
939 | return CMD_WARNING_CONFIG_FAILED; | |
940 | } | |
941 | ||
942 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
943 | zns->rtadv.adv_msec_if_count--; | |
944 | ||
945 | if (interval % 1000) | |
946 | zns->rtadv.adv_msec_if_count++; | |
947 | ||
3ea48364 | 948 | SET_FLAG(zif->rtadv.ra_configured, VTY_RA_INTERVAL_CONFIGURED); |
d62a17ae | 949 | zif->rtadv.MaxRtrAdvInterval = interval; |
950 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
951 | zif->rtadv.AdvIntervalTimer = 0; | |
952 | ||
953 | return CMD_SUCCESS; | |
7cee1bb1 | 954 | } |
955 | ||
718e3744 | 956 | DEFUN (ipv6_nd_ra_interval, |
957 | ipv6_nd_ra_interval_cmd, | |
6147e2c6 | 958 | "ipv6 nd ra-interval (1-1800)", |
3e31cded | 959 | "Interface IPv6 config commands\n" |
718e3744 | 960 | "Neighbor discovery\n" |
961 | "Router Advertisement interval\n" | |
962 | "Router Advertisement interval in seconds\n") | |
963 | { | |
d62a17ae | 964 | int idx_number = 3; |
965 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
966 | unsigned interval; | |
967 | struct zebra_if *zif = ifp->info; | |
968 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); | |
969 | struct zebra_ns *zns; | |
970 | ||
971 | zns = zvrf->zns; | |
972 | interval = strtoul(argv[idx_number]->arg, NULL, 10); | |
973 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
974 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime)) { | |
975 | vty_out(vty, | |
976 | "This ra-interval would conflict with configured ra-lifetime!\n"); | |
977 | return CMD_WARNING_CONFIG_FAILED; | |
978 | } | |
979 | ||
980 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
981 | zns->rtadv.adv_msec_if_count--; | |
982 | ||
983 | /* convert to milliseconds */ | |
984 | interval = interval * 1000; | |
985 | ||
3ea48364 | 986 | SET_FLAG(zif->rtadv.ra_configured, VTY_RA_INTERVAL_CONFIGURED); |
d62a17ae | 987 | zif->rtadv.MaxRtrAdvInterval = interval; |
988 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
989 | zif->rtadv.AdvIntervalTimer = 0; | |
990 | ||
991 | return CMD_SUCCESS; | |
718e3744 | 992 | } |
993 | ||
994 | DEFUN (no_ipv6_nd_ra_interval, | |
995 | no_ipv6_nd_ra_interval_cmd, | |
34ccea1e | 996 | "no ipv6 nd ra-interval [<(1-1800)|msec (1-1800000)>]", |
718e3744 | 997 | NO_STR |
3e31cded | 998 | "Interface IPv6 config commands\n" |
718e3744 | 999 | "Neighbor discovery\n" |
34ccea1e QY |
1000 | "Router Advertisement interval\n" |
1001 | "Router Advertisement interval in seconds\n" | |
1002 | "Specify millisecond router advertisement interval\n" | |
1003 | "Router Advertisement interval in milliseconds\n") | |
718e3744 | 1004 | { |
d62a17ae | 1005 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1006 | struct zebra_if *zif = ifp->info; | |
1007 | struct zebra_vrf *zvrf; | |
1008 | struct zebra_ns *zns; | |
1009 | ||
1010 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
1011 | zns = zvrf->zns; | |
1012 | ||
1013 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
1014 | zns->rtadv.adv_msec_if_count--; | |
1015 | ||
3ea48364 DS |
1016 | UNSET_FLAG(zif->rtadv.ra_configured, VTY_RA_INTERVAL_CONFIGURED); |
1017 | ||
1018 | if (CHECK_FLAG(zif->rtadv.ra_configured, BGP_RA_CONFIGURED)) | |
1019 | zif->rtadv.MaxRtrAdvInterval = 10000; | |
1020 | else | |
1021 | zif->rtadv.MaxRtrAdvInterval = RTADV_MAX_RTR_ADV_INTERVAL; | |
1022 | ||
d62a17ae | 1023 | zif->rtadv.AdvIntervalTimer = zif->rtadv.MaxRtrAdvInterval; |
3ea48364 | 1024 | zif->rtadv.MinRtrAdvInterval = RTADV_MIN_RTR_ADV_INTERVAL; |
d62a17ae | 1025 | |
1026 | return CMD_SUCCESS; | |
718e3744 | 1027 | } |
1028 | ||
1029 | DEFUN (ipv6_nd_ra_lifetime, | |
1030 | ipv6_nd_ra_lifetime_cmd, | |
6147e2c6 | 1031 | "ipv6 nd ra-lifetime (0-9000)", |
3e31cded | 1032 | "Interface IPv6 config commands\n" |
718e3744 | 1033 | "Neighbor discovery\n" |
1034 | "Router lifetime\n" | |
4afa50b3 | 1035 | "Router lifetime in seconds (0 stands for a non-default gw)\n") |
718e3744 | 1036 | { |
d62a17ae | 1037 | int idx_number = 3; |
1038 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1039 | struct zebra_if *zif = ifp->info; | |
1040 | int lifetime; | |
1041 | ||
1042 | lifetime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1043 | ||
1044 | /* The value to be placed in the Router Lifetime field | |
1045 | * of Router Advertisements sent from the interface, | |
1046 | * in seconds. MUST be either zero or between | |
1047 | * MaxRtrAdvInterval and 9000 seconds. -- RFC4861, 6.2.1 */ | |
1048 | if ((lifetime != 0 && lifetime * 1000 < zif->rtadv.MaxRtrAdvInterval)) { | |
1049 | vty_out(vty, | |
1050 | "This ra-lifetime would conflict with configured ra-interval\n"); | |
1051 | return CMD_WARNING_CONFIG_FAILED; | |
1052 | } | |
1053 | ||
1054 | zif->rtadv.AdvDefaultLifetime = lifetime; | |
1055 | ||
1056 | return CMD_SUCCESS; | |
718e3744 | 1057 | } |
1058 | ||
1059 | DEFUN (no_ipv6_nd_ra_lifetime, | |
1060 | no_ipv6_nd_ra_lifetime_cmd, | |
34ccea1e | 1061 | "no ipv6 nd ra-lifetime [(0-9000)]", |
718e3744 | 1062 | NO_STR |
3e31cded | 1063 | "Interface IPv6 config commands\n" |
718e3744 | 1064 | "Neighbor discovery\n" |
34ccea1e QY |
1065 | "Router lifetime\n" |
1066 | "Router lifetime in seconds (0 stands for a non-default gw)\n") | |
718e3744 | 1067 | { |
d62a17ae | 1068 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1069 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1070 | |
d62a17ae | 1071 | zif->rtadv.AdvDefaultLifetime = -1; |
718e3744 | 1072 | |
d62a17ae | 1073 | return CMD_SUCCESS; |
718e3744 | 1074 | } |
1075 | ||
1076 | DEFUN (ipv6_nd_reachable_time, | |
1077 | ipv6_nd_reachable_time_cmd, | |
6147e2c6 | 1078 | "ipv6 nd reachable-time (1-3600000)", |
3e31cded | 1079 | "Interface IPv6 config commands\n" |
718e3744 | 1080 | "Neighbor discovery\n" |
1081 | "Reachable time\n" | |
1082 | "Reachable time in milliseconds\n") | |
1083 | { | |
d62a17ae | 1084 | int idx_number = 3; |
1085 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1086 | struct zebra_if *zif = ifp->info; | |
1087 | zif->rtadv.AdvReachableTime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1088 | return CMD_SUCCESS; | |
718e3744 | 1089 | } |
1090 | ||
1091 | DEFUN (no_ipv6_nd_reachable_time, | |
1092 | no_ipv6_nd_reachable_time_cmd, | |
34ccea1e | 1093 | "no ipv6 nd reachable-time [(1-3600000)]", |
718e3744 | 1094 | NO_STR |
3e31cded | 1095 | "Interface IPv6 config commands\n" |
718e3744 | 1096 | "Neighbor discovery\n" |
34ccea1e QY |
1097 | "Reachable time\n" |
1098 | "Reachable time in milliseconds\n") | |
718e3744 | 1099 | { |
d62a17ae | 1100 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1101 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1102 | |
d62a17ae | 1103 | zif->rtadv.AdvReachableTime = 0; |
718e3744 | 1104 | |
d62a17ae | 1105 | return CMD_SUCCESS; |
718e3744 | 1106 | } |
1107 | ||
7cee1bb1 | 1108 | DEFUN (ipv6_nd_homeagent_preference, |
1109 | ipv6_nd_homeagent_preference_cmd, | |
6147e2c6 | 1110 | "ipv6 nd home-agent-preference (0-65535)", |
7cee1bb1 | 1111 | "Interface IPv6 config commands\n" |
1112 | "Neighbor discovery\n" | |
1113 | "Home Agent preference\n" | |
4afa50b3 | 1114 | "preference value (default is 0, least preferred)\n") |
7cee1bb1 | 1115 | { |
d62a17ae | 1116 | int idx_number = 3; |
1117 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1118 | struct zebra_if *zif = ifp->info; | |
1119 | zif->rtadv.HomeAgentPreference = | |
1120 | strtoul(argv[idx_number]->arg, NULL, 10); | |
1121 | return CMD_SUCCESS; | |
7cee1bb1 | 1122 | } |
1123 | ||
1124 | DEFUN (no_ipv6_nd_homeagent_preference, | |
1125 | no_ipv6_nd_homeagent_preference_cmd, | |
34ccea1e | 1126 | "no ipv6 nd home-agent-preference [(0-65535)]", |
7cee1bb1 | 1127 | NO_STR |
1128 | "Interface IPv6 config commands\n" | |
1129 | "Neighbor discovery\n" | |
34ccea1e QY |
1130 | "Home Agent preference\n" |
1131 | "preference value (default is 0, least preferred)\n") | |
7cee1bb1 | 1132 | { |
d62a17ae | 1133 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1134 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1135 | |
d62a17ae | 1136 | zif->rtadv.HomeAgentPreference = 0; |
7cee1bb1 | 1137 | |
d62a17ae | 1138 | return CMD_SUCCESS; |
7cee1bb1 | 1139 | } |
1140 | ||
1141 | DEFUN (ipv6_nd_homeagent_lifetime, | |
1142 | ipv6_nd_homeagent_lifetime_cmd, | |
6147e2c6 | 1143 | "ipv6 nd home-agent-lifetime (0-65520)", |
7cee1bb1 | 1144 | "Interface IPv6 config commands\n" |
1145 | "Neighbor discovery\n" | |
1146 | "Home Agent lifetime\n" | |
4afa50b3 | 1147 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") |
7cee1bb1 | 1148 | { |
d62a17ae | 1149 | int idx_number = 3; |
1150 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1151 | struct zebra_if *zif = ifp->info; | |
1152 | zif->rtadv.HomeAgentLifetime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1153 | return CMD_SUCCESS; | |
7cee1bb1 | 1154 | } |
1155 | ||
1156 | DEFUN (no_ipv6_nd_homeagent_lifetime, | |
1157 | no_ipv6_nd_homeagent_lifetime_cmd, | |
34ccea1e | 1158 | "no ipv6 nd home-agent-lifetime [(0-65520)]", |
7cee1bb1 | 1159 | NO_STR |
1160 | "Interface IPv6 config commands\n" | |
1161 | "Neighbor discovery\n" | |
34ccea1e QY |
1162 | "Home Agent lifetime\n" |
1163 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") | |
7cee1bb1 | 1164 | { |
d62a17ae | 1165 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1166 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1167 | |
d62a17ae | 1168 | zif->rtadv.HomeAgentLifetime = -1; |
7cee1bb1 | 1169 | |
d62a17ae | 1170 | return CMD_SUCCESS; |
7cee1bb1 | 1171 | } |
1172 | ||
718e3744 | 1173 | DEFUN (ipv6_nd_managed_config_flag, |
1174 | ipv6_nd_managed_config_flag_cmd, | |
1175 | "ipv6 nd managed-config-flag", | |
3e31cded | 1176 | "Interface IPv6 config commands\n" |
718e3744 | 1177 | "Neighbor discovery\n" |
1178 | "Managed address configuration flag\n") | |
1179 | { | |
d62a17ae | 1180 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1181 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1182 | |
d62a17ae | 1183 | zif->rtadv.AdvManagedFlag = 1; |
718e3744 | 1184 | |
d62a17ae | 1185 | return CMD_SUCCESS; |
718e3744 | 1186 | } |
1187 | ||
1188 | DEFUN (no_ipv6_nd_managed_config_flag, | |
1189 | no_ipv6_nd_managed_config_flag_cmd, | |
1190 | "no ipv6 nd managed-config-flag", | |
1191 | NO_STR | |
3e31cded | 1192 | "Interface IPv6 config commands\n" |
718e3744 | 1193 | "Neighbor discovery\n" |
1194 | "Managed address configuration flag\n") | |
1195 | { | |
d62a17ae | 1196 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1197 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1198 | |
d62a17ae | 1199 | zif->rtadv.AdvManagedFlag = 0; |
718e3744 | 1200 | |
d62a17ae | 1201 | return CMD_SUCCESS; |
718e3744 | 1202 | } |
1203 | ||
7cee1bb1 | 1204 | DEFUN (ipv6_nd_homeagent_config_flag, |
1205 | ipv6_nd_homeagent_config_flag_cmd, | |
1206 | "ipv6 nd home-agent-config-flag", | |
1207 | "Interface IPv6 config commands\n" | |
1208 | "Neighbor discovery\n" | |
1209 | "Home Agent configuration flag\n") | |
1210 | { | |
d62a17ae | 1211 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1212 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1213 | |
d62a17ae | 1214 | zif->rtadv.AdvHomeAgentFlag = 1; |
7cee1bb1 | 1215 | |
d62a17ae | 1216 | return CMD_SUCCESS; |
7cee1bb1 | 1217 | } |
1218 | ||
1219 | DEFUN (no_ipv6_nd_homeagent_config_flag, | |
1220 | no_ipv6_nd_homeagent_config_flag_cmd, | |
1221 | "no ipv6 nd home-agent-config-flag", | |
1222 | NO_STR | |
1223 | "Interface IPv6 config commands\n" | |
1224 | "Neighbor discovery\n" | |
1225 | "Home Agent configuration flag\n") | |
1226 | { | |
d62a17ae | 1227 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1228 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1229 | |
d62a17ae | 1230 | zif->rtadv.AdvHomeAgentFlag = 0; |
7cee1bb1 | 1231 | |
d62a17ae | 1232 | return CMD_SUCCESS; |
7cee1bb1 | 1233 | } |
1234 | ||
1235 | DEFUN (ipv6_nd_adv_interval_config_option, | |
1236 | ipv6_nd_adv_interval_config_option_cmd, | |
1237 | "ipv6 nd adv-interval-option", | |
1238 | "Interface IPv6 config commands\n" | |
1239 | "Neighbor discovery\n" | |
1240 | "Advertisement Interval Option\n") | |
1241 | { | |
d62a17ae | 1242 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1243 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1244 | |
d62a17ae | 1245 | zif->rtadv.AdvIntervalOption = 1; |
7cee1bb1 | 1246 | |
d62a17ae | 1247 | return CMD_SUCCESS; |
7cee1bb1 | 1248 | } |
1249 | ||
1250 | DEFUN (no_ipv6_nd_adv_interval_config_option, | |
1251 | no_ipv6_nd_adv_interval_config_option_cmd, | |
1252 | "no ipv6 nd adv-interval-option", | |
1253 | NO_STR | |
1254 | "Interface IPv6 config commands\n" | |
1255 | "Neighbor discovery\n" | |
1256 | "Advertisement Interval Option\n") | |
1257 | { | |
d62a17ae | 1258 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1259 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1260 | |
d62a17ae | 1261 | zif->rtadv.AdvIntervalOption = 0; |
7cee1bb1 | 1262 | |
d62a17ae | 1263 | return CMD_SUCCESS; |
7cee1bb1 | 1264 | } |
1265 | ||
718e3744 | 1266 | DEFUN (ipv6_nd_other_config_flag, |
1267 | ipv6_nd_other_config_flag_cmd, | |
1268 | "ipv6 nd other-config-flag", | |
3e31cded | 1269 | "Interface IPv6 config commands\n" |
718e3744 | 1270 | "Neighbor discovery\n" |
1271 | "Other statefull configuration flag\n") | |
1272 | { | |
d62a17ae | 1273 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1274 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1275 | |
d62a17ae | 1276 | zif->rtadv.AdvOtherConfigFlag = 1; |
718e3744 | 1277 | |
d62a17ae | 1278 | return CMD_SUCCESS; |
718e3744 | 1279 | } |
1280 | ||
1281 | DEFUN (no_ipv6_nd_other_config_flag, | |
1282 | no_ipv6_nd_other_config_flag_cmd, | |
1283 | "no ipv6 nd other-config-flag", | |
1284 | NO_STR | |
3e31cded | 1285 | "Interface IPv6 config commands\n" |
718e3744 | 1286 | "Neighbor discovery\n" |
1287 | "Other statefull configuration flag\n") | |
1288 | { | |
d62a17ae | 1289 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1290 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1291 | |
d62a17ae | 1292 | zif->rtadv.AdvOtherConfigFlag = 0; |
718e3744 | 1293 | |
d62a17ae | 1294 | return CMD_SUCCESS; |
718e3744 | 1295 | } |
1296 | ||
3e31cded | 1297 | DEFUN (ipv6_nd_prefix, |
1298 | ipv6_nd_prefix_cmd, | |
34ccea1e | 1299 | "ipv6 nd prefix X:X::X:X/M [<(0-4294967295)|infinite> <(0-4294967295)|infinite>] [<router-address|off-link [no-autoconfig]|no-autoconfig [off-link]>]", |
3e31cded | 1300 | "Interface IPv6 config commands\n" |
718e3744 | 1301 | "Neighbor discovery\n" |
1302 | "Prefix information\n" | |
1303 | "IPv6 prefix\n" | |
1304 | "Valid lifetime in seconds\n" | |
3e31cded | 1305 | "Infinite valid lifetime\n" |
718e3744 | 1306 | "Preferred lifetime in seconds\n" |
3e31cded | 1307 | "Infinite preferred lifetime\n" |
34ccea1e | 1308 | "Set Router Address flag\n" |
3e31cded | 1309 | "Do not use prefix for onlink determination\n" |
7cee1bb1 | 1310 | "Do not use prefix for autoconfiguration\n" |
34ccea1e QY |
1311 | "Do not use prefix for autoconfiguration\n" |
1312 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1313 | { |
d62a17ae | 1314 | /* prelude */ |
1315 | char *prefix = argv[3]->arg; | |
9d303b37 DL |
1316 | int lifetimes = (argc > 4) && (argv[4]->type == RANGE_TKN |
1317 | || strmatch(argv[4]->text, "infinite")); | |
d62a17ae | 1318 | int routeropts = lifetimes ? argc > 6 : argc > 4; |
1319 | ||
1320 | int idx_routeropts = routeropts ? (lifetimes ? 6 : 4) : 0; | |
1321 | ||
1322 | char *lifetime = NULL, *preflifetime = NULL; | |
1323 | int routeraddr = 0, offlink = 0, noautoconf = 0; | |
1324 | if (lifetimes) { | |
1325 | lifetime = argv[4]->type == RANGE_TKN ? argv[4]->arg | |
1326 | : argv[4]->text; | |
1327 | preflifetime = argv[5]->type == RANGE_TKN ? argv[5]->arg | |
1328 | : argv[5]->text; | |
1329 | } | |
1330 | if (routeropts) { | |
1331 | routeraddr = | |
1332 | strmatch(argv[idx_routeropts]->text, "router-address"); | |
1333 | if (!routeraddr) { | |
1334 | offlink = (argc > idx_routeropts + 1 | |
1335 | || strmatch(argv[idx_routeropts]->text, | |
1336 | "off-link")); | |
1337 | noautoconf = (argc > idx_routeropts + 1 | |
1338 | || strmatch(argv[idx_routeropts]->text, | |
1339 | "no-autoconfig")); | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | /* business */ | |
1344 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1345 | struct zebra_if *zebra_if = ifp->info; | |
1346 | int ret; | |
1347 | struct rtadv_prefix rp; | |
1348 | ||
1349 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1350 | if (!ret) { | |
1351 | vty_out(vty, "Malformed IPv6 prefix\n"); | |
1352 | return CMD_WARNING_CONFIG_FAILED; | |
1353 | } | |
1354 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1355 | rp.AdvOnLinkFlag = !offlink; | |
1356 | rp.AdvAutonomousFlag = !noautoconf; | |
1357 | rp.AdvRouterAddressFlag = routeraddr; | |
1358 | rp.AdvValidLifetime = RTADV_VALID_LIFETIME; | |
1359 | rp.AdvPreferredLifetime = RTADV_PREFERRED_LIFETIME; | |
1360 | ||
1361 | if (lifetimes) { | |
1362 | rp.AdvValidLifetime = strmatch(lifetime, "infinite") | |
1363 | ? UINT32_MAX | |
1364 | : strtoll(lifetime, NULL, 10); | |
1365 | rp.AdvPreferredLifetime = | |
1366 | strmatch(preflifetime, "infinite") | |
1367 | ? UINT32_MAX | |
1368 | : strtoll(preflifetime, NULL, 10); | |
1369 | if (rp.AdvPreferredLifetime > rp.AdvValidLifetime) { | |
1370 | vty_out(vty, "Invalid preferred lifetime\n"); | |
1371 | return CMD_WARNING_CONFIG_FAILED; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | rtadv_prefix_set(zebra_if, &rp); | |
1376 | ||
1377 | return CMD_SUCCESS; | |
718e3744 | 1378 | } |
1379 | ||
3e31cded | 1380 | DEFUN (no_ipv6_nd_prefix, |
1381 | no_ipv6_nd_prefix_cmd, | |
34ccea1e QY |
1382 | "no ipv6 nd prefix X:X::X:X/M [<(0-4294967295)|infinite> <(0-4294967295)|infinite>] [<router-address|off-link [no-autoconfig]|no-autoconfig [off-link]>]", |
1383 | NO_STR | |
3e31cded | 1384 | "Interface IPv6 config commands\n" |
718e3744 | 1385 | "Neighbor discovery\n" |
1386 | "Prefix information\n" | |
34ccea1e QY |
1387 | "IPv6 prefix\n" |
1388 | "Valid lifetime in seconds\n" | |
1389 | "Infinite valid lifetime\n" | |
1390 | "Preferred lifetime in seconds\n" | |
1391 | "Infinite preferred lifetime\n" | |
1392 | "Set Router Address flag\n" | |
1393 | "Do not use prefix for onlink determination\n" | |
1394 | "Do not use prefix for autoconfiguration\n" | |
1395 | "Do not use prefix for autoconfiguration\n" | |
1396 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1397 | { |
d62a17ae | 1398 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1399 | struct zebra_if *zebra_if = ifp->info; | |
1400 | int ret; | |
1401 | struct rtadv_prefix rp; | |
1402 | char *prefix = argv[4]->arg; | |
1403 | ||
1404 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1405 | if (!ret) { | |
1406 | vty_out(vty, "Malformed IPv6 prefix\n"); | |
1407 | return CMD_WARNING_CONFIG_FAILED; | |
1408 | } | |
1409 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1410 | ||
1411 | ret = rtadv_prefix_reset(zebra_if, &rp); | |
1412 | if (!ret) { | |
1413 | vty_out(vty, "Non-existant IPv6 prefix\n"); | |
1414 | return CMD_WARNING_CONFIG_FAILED; | |
1415 | } | |
1416 | ||
1417 | return CMD_SUCCESS; | |
718e3744 | 1418 | } |
b60668d0 CC |
1419 | |
1420 | DEFUN (ipv6_nd_router_preference, | |
1421 | ipv6_nd_router_preference_cmd, | |
6147e2c6 | 1422 | "ipv6 nd router-preference <high|medium|low>", |
b60668d0 CC |
1423 | "Interface IPv6 config commands\n" |
1424 | "Neighbor discovery\n" | |
1425 | "Default router preference\n" | |
1426 | "High default router preference\n" | |
58f1b7cc DS |
1427 | "Medium default router preference (default)\n" |
1428 | "Low default router preference\n") | |
b60668d0 | 1429 | { |
d62a17ae | 1430 | int idx_high_medium_low = 3; |
1431 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1432 | struct zebra_if *zif = ifp->info; | |
1433 | int i = 0; | |
1434 | ||
1435 | while (0 != rtadv_pref_strs[i]) { | |
1436 | if (strncmp(argv[idx_high_medium_low]->arg, rtadv_pref_strs[i], | |
1437 | 1) | |
1438 | == 0) { | |
1439 | zif->rtadv.DefaultPreference = i; | |
1440 | return CMD_SUCCESS; | |
1441 | } | |
1442 | i++; | |
b60668d0 | 1443 | } |
b60668d0 | 1444 | |
d62a17ae | 1445 | return CMD_ERR_NO_MATCH; |
b60668d0 CC |
1446 | } |
1447 | ||
1448 | DEFUN (no_ipv6_nd_router_preference, | |
1449 | no_ipv6_nd_router_preference_cmd, | |
34ccea1e | 1450 | "no ipv6 nd router-preference [<high|medium|low>]", |
b60668d0 CC |
1451 | NO_STR |
1452 | "Interface IPv6 config commands\n" | |
1453 | "Neighbor discovery\n" | |
34ccea1e QY |
1454 | "Default router preference\n" |
1455 | "High default router preference\n" | |
1456 | "Medium default router preference (default)\n" | |
1457 | "Low default router preference\n") | |
b60668d0 | 1458 | { |
d62a17ae | 1459 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1460 | struct zebra_if *zif = ifp->info; | |
b60668d0 | 1461 | |
d62a17ae | 1462 | zif->rtadv.DefaultPreference = |
1463 | RTADV_PREF_MEDIUM; /* Default per RFC4191. */ | |
b60668d0 | 1464 | |
d62a17ae | 1465 | return CMD_SUCCESS; |
b60668d0 CC |
1466 | } |
1467 | ||
6ae93c05 DO |
1468 | DEFUN (ipv6_nd_mtu, |
1469 | ipv6_nd_mtu_cmd, | |
6147e2c6 | 1470 | "ipv6 nd mtu (1-65535)", |
6ae93c05 DO |
1471 | "Interface IPv6 config commands\n" |
1472 | "Neighbor discovery\n" | |
1473 | "Advertised MTU\n" | |
1474 | "MTU in bytes\n") | |
1475 | { | |
d62a17ae | 1476 | int idx_number = 3; |
1477 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1478 | struct zebra_if *zif = ifp->info; | |
1479 | zif->rtadv.AdvLinkMTU = strtoul(argv[idx_number]->arg, NULL, 10); | |
1480 | return CMD_SUCCESS; | |
6ae93c05 DO |
1481 | } |
1482 | ||
1483 | DEFUN (no_ipv6_nd_mtu, | |
1484 | no_ipv6_nd_mtu_cmd, | |
34ccea1e | 1485 | "no ipv6 nd mtu [(1-65535)]", |
6ae93c05 DO |
1486 | NO_STR |
1487 | "Interface IPv6 config commands\n" | |
1488 | "Neighbor discovery\n" | |
34ccea1e QY |
1489 | "Advertised MTU\n" |
1490 | "MTU in bytes\n") | |
6ae93c05 | 1491 | { |
d62a17ae | 1492 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1493 | struct zebra_if *zif = ifp->info; | |
1494 | zif->rtadv.AdvLinkMTU = 0; | |
1495 | return CMD_SUCCESS; | |
6ae93c05 DO |
1496 | } |
1497 | ||
2eb27eec DL |
1498 | /* Dump interface ND information to vty. */ |
1499 | static int nd_dump_vty(struct vty *vty, struct interface *ifp) | |
1500 | { | |
1501 | struct zebra_if *zif; | |
1502 | struct rtadvconf *rtadv; | |
1503 | int interval; | |
1504 | ||
1505 | zif = (struct zebra_if *)ifp->info; | |
1506 | rtadv = &zif->rtadv; | |
1507 | ||
1508 | if (rtadv->AdvSendAdvertisements) { | |
1509 | vty_out(vty, | |
1510 | " ND advertised reachable time is %d milliseconds\n", | |
1511 | rtadv->AdvReachableTime); | |
1512 | vty_out(vty, | |
1513 | " ND advertised retransmit interval is %d milliseconds\n", | |
1514 | rtadv->AdvRetransTimer); | |
1515 | vty_out(vty, " ND router advertisements sent: %d rcvd: %d\n", | |
1516 | zif->ra_sent, zif->ra_rcvd); | |
1517 | interval = rtadv->MaxRtrAdvInterval; | |
1518 | if (interval % 1000) | |
1519 | vty_out(vty, | |
1520 | " ND router advertisements are sent every " | |
1521 | "%d milliseconds\n", | |
1522 | interval); | |
1523 | else | |
1524 | vty_out(vty, | |
1525 | " ND router advertisements are sent every " | |
1526 | "%d seconds\n", | |
1527 | interval / 1000); | |
1528 | if (rtadv->AdvDefaultLifetime != -1) | |
1529 | vty_out(vty, | |
1530 | " ND router advertisements live for %d seconds\n", | |
1531 | rtadv->AdvDefaultLifetime); | |
1532 | else | |
1533 | vty_out(vty, | |
1534 | " ND router advertisements lifetime tracks ra-interval\n"); | |
1535 | vty_out(vty, | |
1536 | " ND router advertisement default router preference is " | |
1537 | "%s\n", | |
1538 | rtadv_pref_strs[rtadv->DefaultPreference]); | |
1539 | if (rtadv->AdvManagedFlag) | |
1540 | vty_out(vty, | |
1541 | " Hosts use DHCP to obtain routable addresses.\n"); | |
1542 | else | |
1543 | vty_out(vty, | |
1544 | " Hosts use stateless autoconfig for addresses.\n"); | |
1545 | if (rtadv->AdvHomeAgentFlag) { | |
1546 | vty_out(vty, | |
1547 | " ND router advertisements with Home Agent flag bit set.\n"); | |
1548 | if (rtadv->HomeAgentLifetime != -1) | |
1549 | vty_out(vty, | |
1550 | " Home Agent lifetime is %u seconds\n", | |
1551 | rtadv->HomeAgentLifetime); | |
1552 | else | |
1553 | vty_out(vty, | |
1554 | " Home Agent lifetime tracks ra-lifetime\n"); | |
1555 | vty_out(vty, " Home Agent preference is %u\n", | |
1556 | rtadv->HomeAgentPreference); | |
1557 | } | |
1558 | if (rtadv->AdvIntervalOption) | |
1559 | vty_out(vty, | |
1560 | " ND router advertisements with Adv. Interval option.\n"); | |
1561 | } | |
1562 | return 0; | |
1563 | } | |
1564 | ||
6ae93c05 | 1565 | |
718e3744 | 1566 | /* Write configuration about router advertisement. */ |
2eb27eec | 1567 | static int rtadv_config_write(struct vty *vty, struct interface *ifp) |
718e3744 | 1568 | { |
d62a17ae | 1569 | struct zebra_if *zif; |
1570 | struct listnode *node; | |
1571 | struct rtadv_prefix *rprefix; | |
1572 | char buf[PREFIX_STRLEN]; | |
1573 | int interval; | |
1574 | ||
1575 | zif = ifp->info; | |
1576 | ||
1577 | if (!(if_is_loopback(ifp) | |
1578 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK))) { | |
3ea48364 DS |
1579 | if (zif->rtadv.AdvSendAdvertisements |
1580 | && CHECK_FLAG(zif->rtadv.ra_configured, VTY_RA_CONFIGURED)) | |
d62a17ae | 1581 | vty_out(vty, " no ipv6 nd suppress-ra\n"); |
1582 | } | |
1583 | ||
1584 | interval = zif->rtadv.MaxRtrAdvInterval; | |
3ea48364 DS |
1585 | if (CHECK_FLAG(zif->rtadv.ra_configured, VTY_RA_INTERVAL_CONFIGURED)) { |
1586 | if (interval % 1000) | |
1587 | vty_out(vty, " ipv6 nd ra-interval msec %d\n", | |
1588 | interval); | |
1589 | else if (interval != RTADV_MAX_RTR_ADV_INTERVAL) | |
1590 | vty_out(vty, " ipv6 nd ra-interval %d\n", | |
1591 | interval / 1000); | |
1592 | } | |
d62a17ae | 1593 | |
1594 | if (zif->rtadv.AdvIntervalOption) | |
1595 | vty_out(vty, " ipv6 nd adv-interval-option\n"); | |
1596 | ||
1597 | if (zif->rtadv.AdvDefaultLifetime != -1) | |
1598 | vty_out(vty, " ipv6 nd ra-lifetime %d\n", | |
1599 | zif->rtadv.AdvDefaultLifetime); | |
1600 | ||
1601 | if (zif->rtadv.HomeAgentPreference) | |
1602 | vty_out(vty, " ipv6 nd home-agent-preference %u\n", | |
1603 | zif->rtadv.HomeAgentPreference); | |
1604 | ||
1605 | if (zif->rtadv.HomeAgentLifetime != -1) | |
1606 | vty_out(vty, " ipv6 nd home-agent-lifetime %u\n", | |
1607 | zif->rtadv.HomeAgentLifetime); | |
1608 | ||
1609 | if (zif->rtadv.AdvHomeAgentFlag) | |
1610 | vty_out(vty, " ipv6 nd home-agent-config-flag\n"); | |
1611 | ||
1612 | if (zif->rtadv.AdvReachableTime) | |
1613 | vty_out(vty, " ipv6 nd reachable-time %d\n", | |
1614 | zif->rtadv.AdvReachableTime); | |
1615 | ||
1616 | if (zif->rtadv.AdvManagedFlag) | |
1617 | vty_out(vty, " ipv6 nd managed-config-flag\n"); | |
1618 | ||
1619 | if (zif->rtadv.AdvOtherConfigFlag) | |
1620 | vty_out(vty, " ipv6 nd other-config-flag\n"); | |
1621 | ||
1622 | if (zif->rtadv.DefaultPreference != RTADV_PREF_MEDIUM) | |
1623 | vty_out(vty, " ipv6 nd router-preference %s\n", | |
1624 | rtadv_pref_strs[zif->rtadv.DefaultPreference]); | |
1625 | ||
1626 | if (zif->rtadv.AdvLinkMTU) | |
1627 | vty_out(vty, " ipv6 nd mtu %d\n", zif->rtadv.AdvLinkMTU); | |
1628 | ||
1629 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
1630 | vty_out(vty, " ipv6 nd prefix %s", | |
1631 | prefix2str(&rprefix->prefix, buf, sizeof(buf))); | |
1632 | if ((rprefix->AdvValidLifetime != RTADV_VALID_LIFETIME) | |
1633 | || (rprefix->AdvPreferredLifetime | |
1634 | != RTADV_PREFERRED_LIFETIME)) { | |
1635 | if (rprefix->AdvValidLifetime == UINT32_MAX) | |
1636 | vty_out(vty, " infinite"); | |
1637 | else | |
1638 | vty_out(vty, " %u", rprefix->AdvValidLifetime); | |
1639 | if (rprefix->AdvPreferredLifetime == UINT32_MAX) | |
1640 | vty_out(vty, " infinite"); | |
1641 | else | |
1642 | vty_out(vty, " %u", | |
1643 | rprefix->AdvPreferredLifetime); | |
1644 | } | |
1645 | if (!rprefix->AdvOnLinkFlag) | |
1646 | vty_out(vty, " off-link"); | |
1647 | if (!rprefix->AdvAutonomousFlag) | |
1648 | vty_out(vty, " no-autoconfig"); | |
1649 | if (rprefix->AdvRouterAddressFlag) | |
1650 | vty_out(vty, " router-address"); | |
1651 | vty_out(vty, "\n"); | |
3e31cded | 1652 | } |
2eb27eec | 1653 | return 0; |
718e3744 | 1654 | } |
1655 | ||
718e3744 | 1656 | |
d62a17ae | 1657 | static void rtadv_event(struct zebra_ns *zns, enum rtadv_event event, int val) |
718e3744 | 1658 | { |
d62a17ae | 1659 | struct rtadv *rtadv = &zns->rtadv; |
1660 | ||
1661 | switch (event) { | |
1662 | case RTADV_START: | |
1663 | thread_add_read(zebrad.master, rtadv_read, zns, val, | |
1664 | &rtadv->ra_read); | |
1665 | thread_add_event(zebrad.master, rtadv_timer, zns, 0, | |
1666 | &rtadv->ra_timer); | |
1667 | break; | |
1668 | case RTADV_STOP: | |
1669 | if (rtadv->ra_timer) { | |
1670 | thread_cancel(rtadv->ra_timer); | |
1671 | rtadv->ra_timer = NULL; | |
1672 | } | |
1673 | if (rtadv->ra_read) { | |
1674 | thread_cancel(rtadv->ra_read); | |
1675 | rtadv->ra_read = NULL; | |
1676 | } | |
1677 | break; | |
1678 | case RTADV_TIMER: | |
1679 | thread_add_timer(zebrad.master, rtadv_timer, zns, val, | |
1680 | &rtadv->ra_timer); | |
1681 | break; | |
1682 | case RTADV_TIMER_MSEC: | |
1683 | thread_add_timer_msec(zebrad.master, rtadv_timer, zns, val, | |
1684 | &rtadv->ra_timer); | |
1685 | break; | |
1686 | case RTADV_READ: | |
1687 | thread_add_read(zebrad.master, rtadv_read, zns, val, | |
1688 | &rtadv->ra_read); | |
1689 | break; | |
1690 | default: | |
1691 | break; | |
718e3744 | 1692 | } |
d62a17ae | 1693 | return; |
718e3744 | 1694 | } |
1695 | ||
d62a17ae | 1696 | void rtadv_init(struct zebra_ns *zns) |
718e3744 | 1697 | { |
fe533c56 | 1698 | zns->rtadv.sock = rtadv_make_socket(zns->ns_id); |
cd80d74f | 1699 | } |
718e3744 | 1700 | |
d62a17ae | 1701 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 1702 | { |
d62a17ae | 1703 | rtadv_event(zns, RTADV_STOP, 0); |
1704 | if (zns->rtadv.sock >= 0) { | |
1705 | close(zns->rtadv.sock); | |
1706 | zns->rtadv.sock = -1; | |
1707 | } | |
1708 | ||
1709 | zns->rtadv.adv_if_count = 0; | |
1710 | zns->rtadv.adv_msec_if_count = 0; | |
cd80d74f | 1711 | } |
718e3744 | 1712 | |
d62a17ae | 1713 | void rtadv_cmd_init(void) |
cd80d74f | 1714 | { |
2eb27eec DL |
1715 | hook_register(zebra_if_extra_info, nd_dump_vty); |
1716 | hook_register(zebra_if_config_wr, rtadv_config_write); | |
1717 | ||
d62a17ae | 1718 | install_element(INTERFACE_NODE, &ipv6_nd_suppress_ra_cmd); |
1719 | install_element(INTERFACE_NODE, &no_ipv6_nd_suppress_ra_cmd); | |
1720 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_cmd); | |
1721 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_msec_cmd); | |
1722 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_interval_cmd); | |
1723 | install_element(INTERFACE_NODE, &ipv6_nd_ra_lifetime_cmd); | |
1724 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_lifetime_cmd); | |
1725 | install_element(INTERFACE_NODE, &ipv6_nd_reachable_time_cmd); | |
1726 | install_element(INTERFACE_NODE, &no_ipv6_nd_reachable_time_cmd); | |
1727 | install_element(INTERFACE_NODE, &ipv6_nd_managed_config_flag_cmd); | |
1728 | install_element(INTERFACE_NODE, &no_ipv6_nd_managed_config_flag_cmd); | |
1729 | install_element(INTERFACE_NODE, &ipv6_nd_other_config_flag_cmd); | |
1730 | install_element(INTERFACE_NODE, &no_ipv6_nd_other_config_flag_cmd); | |
1731 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_config_flag_cmd); | |
1732 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_config_flag_cmd); | |
1733 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_preference_cmd); | |
1734 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_preference_cmd); | |
1735 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_lifetime_cmd); | |
1736 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_lifetime_cmd); | |
1737 | install_element(INTERFACE_NODE, | |
1738 | &ipv6_nd_adv_interval_config_option_cmd); | |
1739 | install_element(INTERFACE_NODE, | |
1740 | &no_ipv6_nd_adv_interval_config_option_cmd); | |
1741 | install_element(INTERFACE_NODE, &ipv6_nd_prefix_cmd); | |
1742 | install_element(INTERFACE_NODE, &no_ipv6_nd_prefix_cmd); | |
1743 | install_element(INTERFACE_NODE, &ipv6_nd_router_preference_cmd); | |
1744 | install_element(INTERFACE_NODE, &no_ipv6_nd_router_preference_cmd); | |
1745 | install_element(INTERFACE_NODE, &ipv6_nd_mtu_cmd); | |
1746 | install_element(INTERFACE_NODE, &no_ipv6_nd_mtu_cmd); | |
718e3744 | 1747 | } |
1748 | ||
d62a17ae | 1749 | static int if_join_all_router(int sock, struct interface *ifp) |
718e3744 | 1750 | { |
d62a17ae | 1751 | int ret; |
718e3744 | 1752 | |
d62a17ae | 1753 | struct ipv6_mreq mreq; |
718e3744 | 1754 | |
d62a17ae | 1755 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
1756 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
1757 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 1758 | |
d62a17ae | 1759 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char *)&mreq, |
1760 | sizeof mreq); | |
1761 | if (ret < 0) | |
1762 | zlog_warn("%s(%u): Failed to join group, socket %u error %s", | |
1763 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 1764 | |
d62a17ae | 1765 | if (IS_ZEBRA_DEBUG_EVENT) |
1766 | zlog_debug( | |
1767 | "%s(%u): Join All-Routers multicast group, socket %u", | |
1768 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 1769 | |
d62a17ae | 1770 | return 0; |
718e3744 | 1771 | } |
1772 | ||
d62a17ae | 1773 | static int if_leave_all_router(int sock, struct interface *ifp) |
718e3744 | 1774 | { |
d62a17ae | 1775 | int ret; |
718e3744 | 1776 | |
d62a17ae | 1777 | struct ipv6_mreq mreq; |
718e3744 | 1778 | |
d62a17ae | 1779 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
1780 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
1781 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 1782 | |
d62a17ae | 1783 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_LEAVE_GROUP, (char *)&mreq, |
1784 | sizeof mreq); | |
1785 | if (ret < 0) | |
1786 | zlog_warn("%s(%u): Failed to leave group, socket %u error %s", | |
1787 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 1788 | |
d62a17ae | 1789 | if (IS_ZEBRA_DEBUG_EVENT) |
1790 | zlog_debug( | |
1791 | "%s(%u): Leave All-Routers multicast group, socket %u", | |
1792 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 1793 | |
d62a17ae | 1794 | return 0; |
718e3744 | 1795 | } |
1796 | ||
1797 | #else | |
d62a17ae | 1798 | void rtadv_init(struct zebra_ns *zns) |
cd80d74f | 1799 | { |
d62a17ae | 1800 | /* Empty.*/; |
cd80d74f | 1801 | } |
d62a17ae | 1802 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 1803 | { |
d62a17ae | 1804 | /* Empty.*/; |
cd80d74f | 1805 | } |
d62a17ae | 1806 | void rtadv_cmd_init(void) |
718e3744 | 1807 | { |
d62a17ae | 1808 | /* Empty.*/; |
718e3744 | 1809 | } |
56c1f7d8 | 1810 | #endif /* HAVE_RTADV */ |