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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" |
718e3744 | 37 | |
38 | #include "zebra/interface.h" | |
39 | #include "zebra/rtadv.h" | |
40 | #include "zebra/debug.h" | |
537d8ea9 | 41 | #include "zebra/rib.h" |
4b5e1359 | 42 | #include "zebra/zserv.h" |
fe18ee2d | 43 | #include "zebra/zebra_ns.h" |
7c551956 | 44 | #include "zebra/zebra_vrf.h" |
718e3744 | 45 | |
edd7c245 | 46 | extern struct zebra_privs_t zserv_privs; |
47 | ||
d62a17ae | 48 | #if defined(HAVE_RTADV) |
718e3744 | 49 | |
fa2b17e3 | 50 | #ifdef OPEN_BSD |
51 | #include <netinet/icmp6.h> | |
52 | #endif | |
53 | ||
718e3744 | 54 | /* If RFC2133 definition is used. */ |
55 | #ifndef IPV6_JOIN_GROUP | |
56 | #define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP | |
57 | #endif | |
58 | #ifndef IPV6_LEAVE_GROUP | |
59 | #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP | |
60 | #endif | |
61 | ||
62 | #define ALLNODE "ff02::1" | |
63 | #define ALLROUTER "ff02::2" | |
64 | ||
d62a17ae | 65 | enum rtadv_event { |
66 | RTADV_START, | |
67 | RTADV_STOP, | |
68 | RTADV_TIMER, | |
69 | RTADV_TIMER_MSEC, | |
70 | RTADV_READ | |
71 | }; | |
718e3744 | 72 | |
d62a17ae | 73 | static void rtadv_event(struct zebra_ns *, enum rtadv_event, int); |
718e3744 | 74 | |
d62a17ae | 75 | static int if_join_all_router(int, struct interface *); |
76 | static int if_leave_all_router(int, struct interface *); | |
6b0655a2 | 77 | |
d62a17ae | 78 | static int rtadv_increment_received(struct zebra_ns *zns, ifindex_t *ifindex) |
911ad1e2 | 79 | { |
d62a17ae | 80 | int ret = -1; |
81 | struct interface *iface; | |
82 | struct zebra_if *zif; | |
83 | ||
84 | iface = if_lookup_by_index_per_ns(zns, *ifindex); | |
85 | if (iface && iface->info) { | |
86 | zif = iface->info; | |
87 | zif->ra_rcvd++; | |
88 | ret = 0; | |
89 | } | |
90 | return ret; | |
795b5abf QY |
91 | } |
92 | ||
d62a17ae | 93 | static int rtadv_recv_packet(struct zebra_ns *zns, int sock, u_char *buf, |
94 | int buflen, struct sockaddr_in6 *from, | |
95 | ifindex_t *ifindex, int *hoplimit) | |
718e3744 | 96 | { |
d62a17ae | 97 | int ret; |
98 | struct msghdr msg; | |
99 | struct iovec iov; | |
100 | struct cmsghdr *cmsgptr; | |
101 | struct in6_addr dst; | |
102 | ||
103 | char adata[1024]; | |
104 | ||
105 | /* Fill in message and iovec. */ | |
106 | msg.msg_name = (void *)from; | |
107 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
108 | msg.msg_iov = &iov; | |
109 | msg.msg_iovlen = 1; | |
110 | msg.msg_control = (void *)adata; | |
111 | msg.msg_controllen = sizeof adata; | |
112 | iov.iov_base = buf; | |
113 | iov.iov_len = buflen; | |
114 | ||
115 | /* If recvmsg fail return minus value. */ | |
116 | ret = recvmsg(sock, &msg, 0); | |
117 | if (ret < 0) | |
118 | return ret; | |
119 | ||
120 | for (cmsgptr = ZCMSG_FIRSTHDR(&msg); cmsgptr != NULL; | |
121 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) { | |
122 | /* I want interface index which this packet comes from. */ | |
123 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
124 | && cmsgptr->cmsg_type == IPV6_PKTINFO) { | |
125 | struct in6_pktinfo *ptr; | |
126 | ||
127 | ptr = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
128 | *ifindex = ptr->ipi6_ifindex; | |
129 | memcpy(&dst, &ptr->ipi6_addr, sizeof(ptr->ipi6_addr)); | |
130 | } | |
131 | ||
132 | /* Incoming packet's hop limit. */ | |
133 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
134 | && cmsgptr->cmsg_type == IPV6_HOPLIMIT) { | |
135 | int *hoptr = (int *)CMSG_DATA(cmsgptr); | |
136 | *hoplimit = *hoptr; | |
137 | } | |
b0b709ab | 138 | } |
795b5abf | 139 | |
d62a17ae | 140 | rtadv_increment_received(zns, ifindex); |
141 | return ret; | |
718e3744 | 142 | } |
143 | ||
144 | #define RTADV_MSG_SIZE 4096 | |
145 | ||
146 | /* Send router advertisement packet. */ | |
d62a17ae | 147 | static void rtadv_send_packet(int sock, struct interface *ifp) |
718e3744 | 148 | { |
d62a17ae | 149 | struct msghdr msg; |
150 | struct iovec iov; | |
151 | struct cmsghdr *cmsgptr; | |
152 | struct in6_pktinfo *pkt; | |
153 | struct sockaddr_in6 addr; | |
154 | static void *adata = NULL; | |
155 | unsigned char buf[RTADV_MSG_SIZE]; | |
156 | struct nd_router_advert *rtadv; | |
157 | int ret; | |
158 | int len = 0; | |
159 | struct zebra_if *zif; | |
160 | struct rtadv_prefix *rprefix; | |
161 | u_char all_nodes_addr[] = {0xff, 0x02, 0, 0, 0, 0, 0, 0, | |
162 | 0, 0, 0, 0, 0, 0, 0, 1}; | |
163 | struct listnode *node; | |
164 | u_int16_t pkt_RouterLifetime; | |
165 | ||
166 | /* | |
167 | * Allocate control message bufffer. This is dynamic because | |
168 | * CMSG_SPACE is not guaranteed not to call a function. Note that | |
169 | * the size will be different on different architectures due to | |
170 | * differing alignment rules. | |
171 | */ | |
172 | if (adata == NULL) { | |
173 | /* XXX Free on shutdown. */ | |
174 | adata = malloc(CMSG_SPACE(sizeof(struct in6_pktinfo))); | |
175 | ||
176 | if (adata == NULL) | |
177 | zlog_err( | |
178 | "rtadv_send_packet: can't malloc control data"); | |
179 | } | |
180 | ||
181 | /* Logging of packet. */ | |
182 | if (IS_ZEBRA_DEBUG_PACKET) | |
183 | zlog_debug("%s(%u): Tx RA, socket %u", ifp->name, ifp->ifindex, | |
184 | sock); | |
185 | ||
186 | /* Fill in sockaddr_in6. */ | |
187 | memset(&addr, 0, sizeof(struct sockaddr_in6)); | |
188 | addr.sin6_family = AF_INET6; | |
718e3744 | 189 | #ifdef SIN6_LEN |
d62a17ae | 190 | addr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 191 | #endif /* SIN6_LEN */ |
d62a17ae | 192 | addr.sin6_port = htons(IPPROTO_ICMPV6); |
193 | IPV6_ADDR_COPY(&addr.sin6_addr, all_nodes_addr); | |
194 | ||
195 | /* Fetch interface information. */ | |
196 | zif = ifp->info; | |
197 | ||
198 | /* Make router advertisement message. */ | |
199 | rtadv = (struct nd_router_advert *)buf; | |
200 | ||
201 | rtadv->nd_ra_type = ND_ROUTER_ADVERT; | |
202 | rtadv->nd_ra_code = 0; | |
203 | rtadv->nd_ra_cksum = 0; | |
204 | ||
205 | rtadv->nd_ra_curhoplimit = 64; | |
206 | ||
207 | /* RFC4191: Default Router Preference is 0 if Router Lifetime is 0. */ | |
208 | rtadv->nd_ra_flags_reserved = zif->rtadv.AdvDefaultLifetime == 0 | |
209 | ? 0 | |
210 | : zif->rtadv.DefaultPreference; | |
211 | rtadv->nd_ra_flags_reserved <<= 3; | |
212 | ||
213 | if (zif->rtadv.AdvManagedFlag) | |
214 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_MANAGED; | |
215 | if (zif->rtadv.AdvOtherConfigFlag) | |
216 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_OTHER; | |
217 | if (zif->rtadv.AdvHomeAgentFlag) | |
218 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_HOME_AGENT; | |
219 | /* Note that according to Neighbor Discovery (RFC 4861 [18]), | |
220 | * AdvDefaultLifetime is by default based on the value of | |
221 | * MaxRtrAdvInterval. AdvDefaultLifetime is used in the Router Lifetime | |
222 | * field of Router Advertisements. Given that this field is expressed | |
223 | * in seconds, a small MaxRtrAdvInterval value can result in a zero | |
224 | * value for this field. To prevent this, routers SHOULD keep | |
225 | * AdvDefaultLifetime in at least one second, even if the use of | |
226 | * MaxRtrAdvInterval would result in a smaller value. -- RFC6275, 7.5 */ | |
227 | pkt_RouterLifetime = | |
228 | zif->rtadv.AdvDefaultLifetime != -1 | |
229 | ? zif->rtadv.AdvDefaultLifetime | |
230 | : MAX(1, 0.003 * zif->rtadv.MaxRtrAdvInterval); | |
231 | rtadv->nd_ra_router_lifetime = htons(pkt_RouterLifetime); | |
232 | rtadv->nd_ra_reachable = htonl(zif->rtadv.AdvReachableTime); | |
233 | rtadv->nd_ra_retransmit = htonl(0); | |
234 | ||
235 | len = sizeof(struct nd_router_advert); | |
236 | ||
237 | /* If both the Home Agent Preference and Home Agent Lifetime are set to | |
238 | * their default values specified above, this option SHOULD NOT be | |
239 | * included in the Router Advertisement messages sent by this home | |
240 | * agent. -- RFC6275, 7.4 */ | |
241 | if (zif->rtadv.AdvHomeAgentFlag | |
242 | && (zif->rtadv.HomeAgentPreference | |
243 | || zif->rtadv.HomeAgentLifetime != -1)) { | |
244 | struct nd_opt_homeagent_info *ndopt_hai = | |
245 | (struct nd_opt_homeagent_info *)(buf + len); | |
246 | ndopt_hai->nd_opt_hai_type = ND_OPT_HA_INFORMATION; | |
247 | ndopt_hai->nd_opt_hai_len = 1; | |
248 | ndopt_hai->nd_opt_hai_reserved = 0; | |
249 | ndopt_hai->nd_opt_hai_preference = | |
250 | htons(zif->rtadv.HomeAgentPreference); | |
251 | /* 16-bit unsigned integer. The lifetime associated with the | |
252 | * home | |
253 | * agent in units of seconds. The default value is the same as | |
254 | * the | |
255 | * Router Lifetime, as specified in the main body of the Router | |
256 | * Advertisement. The maximum value corresponds to 18.2 hours. | |
257 | * A | |
258 | * value of 0 MUST NOT be used. -- RFC6275, 7.5 */ | |
259 | ndopt_hai->nd_opt_hai_lifetime = | |
260 | htons(zif->rtadv.HomeAgentLifetime != -1 | |
261 | ? zif->rtadv.HomeAgentLifetime | |
262 | : MAX(1, pkt_RouterLifetime) /* 0 is OK | |
263 | for RL, | |
264 | but not | |
265 | for HAL*/ | |
266 | ); | |
267 | len += sizeof(struct nd_opt_homeagent_info); | |
268 | } | |
718e3744 | 269 | |
d62a17ae | 270 | if (zif->rtadv.AdvIntervalOption) { |
271 | struct nd_opt_adv_interval *ndopt_adv = | |
272 | (struct nd_opt_adv_interval *)(buf + len); | |
273 | ndopt_adv->nd_opt_ai_type = ND_OPT_ADV_INTERVAL; | |
274 | ndopt_adv->nd_opt_ai_len = 1; | |
275 | ndopt_adv->nd_opt_ai_reserved = 0; | |
276 | ndopt_adv->nd_opt_ai_interval = | |
277 | htonl(zif->rtadv.MaxRtrAdvInterval); | |
278 | len += sizeof(struct nd_opt_adv_interval); | |
279 | } | |
280 | ||
281 | /* Fill in prefix. */ | |
282 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
283 | struct nd_opt_prefix_info *pinfo; | |
718e3744 | 284 | |
d62a17ae | 285 | pinfo = (struct nd_opt_prefix_info *)(buf + len); |
718e3744 | 286 | |
d62a17ae | 287 | pinfo->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION; |
288 | pinfo->nd_opt_pi_len = 4; | |
289 | pinfo->nd_opt_pi_prefix_len = rprefix->prefix.prefixlen; | |
290 | ||
291 | pinfo->nd_opt_pi_flags_reserved = 0; | |
292 | if (rprefix->AdvOnLinkFlag) | |
293 | pinfo->nd_opt_pi_flags_reserved |= | |
294 | ND_OPT_PI_FLAG_ONLINK; | |
295 | if (rprefix->AdvAutonomousFlag) | |
296 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_AUTO; | |
297 | if (rprefix->AdvRouterAddressFlag) | |
298 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_RADDR; | |
299 | ||
300 | pinfo->nd_opt_pi_valid_time = htonl(rprefix->AdvValidLifetime); | |
301 | pinfo->nd_opt_pi_preferred_time = | |
302 | htonl(rprefix->AdvPreferredLifetime); | |
303 | pinfo->nd_opt_pi_reserved2 = 0; | |
304 | ||
305 | IPV6_ADDR_COPY(&pinfo->nd_opt_pi_prefix, | |
306 | &rprefix->prefix.prefix); | |
307 | ||
308 | #ifdef DEBUG | |
309 | { | |
310 | u_char buf[INET6_ADDRSTRLEN]; | |
311 | ||
312 | zlog_debug("DEBUG %s", | |
313 | inet_ntop(AF_INET6, &pinfo->nd_opt_pi_prefix, | |
314 | buf, INET6_ADDRSTRLEN)); | |
315 | } | |
718e3744 | 316 | #endif /* DEBUG */ |
317 | ||
d62a17ae | 318 | len += sizeof(struct nd_opt_prefix_info); |
319 | } | |
320 | ||
321 | /* Hardware address. */ | |
322 | if (ifp->hw_addr_len != 0) { | |
323 | buf[len++] = ND_OPT_SOURCE_LINKADDR; | |
324 | ||
325 | /* Option length should be rounded up to next octet if | |
326 | the link address does not end on an octet boundary. */ | |
327 | buf[len++] = (ifp->hw_addr_len + 9) >> 3; | |
328 | ||
329 | memcpy(buf + len, ifp->hw_addr, ifp->hw_addr_len); | |
330 | len += ifp->hw_addr_len; | |
331 | ||
332 | /* Pad option to end on an octet boundary. */ | |
333 | memset(buf + len, 0, -(ifp->hw_addr_len + 2) & 0x7); | |
334 | len += -(ifp->hw_addr_len + 2) & 0x7; | |
335 | } | |
336 | ||
337 | /* MTU */ | |
338 | if (zif->rtadv.AdvLinkMTU) { | |
339 | struct nd_opt_mtu *opt = (struct nd_opt_mtu *)(buf + len); | |
340 | opt->nd_opt_mtu_type = ND_OPT_MTU; | |
341 | opt->nd_opt_mtu_len = 1; | |
342 | opt->nd_opt_mtu_reserved = 0; | |
343 | opt->nd_opt_mtu_mtu = htonl(zif->rtadv.AdvLinkMTU); | |
344 | len += sizeof(struct nd_opt_mtu); | |
345 | } | |
346 | ||
347 | msg.msg_name = (void *)&addr; | |
348 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
349 | msg.msg_iov = &iov; | |
350 | msg.msg_iovlen = 1; | |
351 | msg.msg_control = (void *)adata; | |
352 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
353 | msg.msg_flags = 0; | |
354 | iov.iov_base = buf; | |
355 | iov.iov_len = len; | |
356 | ||
357 | cmsgptr = ZCMSG_FIRSTHDR(&msg); | |
358 | cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
359 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
360 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
361 | ||
362 | pkt = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
363 | memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); | |
364 | pkt->ipi6_ifindex = ifp->ifindex; | |
365 | ||
366 | ret = sendmsg(sock, &msg, 0); | |
367 | if (ret < 0) { | |
368 | zlog_err("%s(%u): Tx RA failed, socket %u error %d (%s)", | |
369 | ifp->name, ifp->ifindex, sock, errno, | |
370 | safe_strerror(errno)); | |
371 | } else | |
372 | zif->ra_sent++; | |
718e3744 | 373 | } |
374 | ||
d62a17ae | 375 | static int rtadv_timer(struct thread *thread) |
718e3744 | 376 | { |
d62a17ae | 377 | struct zebra_ns *zns = THREAD_ARG(thread); |
378 | struct vrf *vrf; | |
379 | struct listnode *node, *nnode; | |
380 | struct interface *ifp; | |
381 | struct zebra_if *zif; | |
382 | int period; | |
383 | ||
384 | zns->rtadv.ra_timer = NULL; | |
385 | if (zns->rtadv.adv_msec_if_count == 0) { | |
386 | period = 1000; /* 1 s */ | |
387 | rtadv_event(zns, RTADV_TIMER, 1 /* 1 s */); | |
388 | } else { | |
389 | period = 10; /* 10 ms */ | |
390 | rtadv_event(zns, RTADV_TIMER_MSEC, 10 /* 10 ms */); | |
391 | } | |
392 | ||
393 | RB_FOREACH(vrf, vrf_id_head, &vrfs_by_id) | |
394 | for (ALL_LIST_ELEMENTS(vrf->iflist, node, nnode, ifp)) { | |
395 | if (if_is_loopback(ifp) | |
396 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK) | |
397 | || !if_is_operative(ifp)) | |
398 | continue; | |
399 | ||
400 | zif = ifp->info; | |
401 | ||
402 | if (zif->rtadv.AdvSendAdvertisements) { | |
403 | if (zif->rtadv.inFastRexmit) { | |
404 | /* We assume we fast rexmit every sec so no | |
405 | * additional vars */ | |
406 | if (--zif->rtadv.NumFastReXmitsRemain <= 0) | |
407 | zif->rtadv.inFastRexmit = 0; | |
408 | ||
409 | if (IS_ZEBRA_DEBUG_SEND) | |
410 | zlog_debug( | |
411 | "Fast RA Rexmit on interface %s", | |
412 | ifp->name); | |
413 | ||
414 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
415 | } else { | |
416 | zif->rtadv.AdvIntervalTimer -= period; | |
417 | if (zif->rtadv.AdvIntervalTimer <= 0) { | |
418 | /* FIXME: using MaxRtrAdvInterval each | |
419 | time isn't what section | |
420 | 6.2.4 of RFC4861 tells to do. */ | |
421 | zif->rtadv.AdvIntervalTimer = | |
422 | zif->rtadv.MaxRtrAdvInterval; | |
423 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
424 | } | |
425 | } | |
426 | } | |
427 | } | |
428 | ||
429 | return 0; | |
718e3744 | 430 | } |
431 | ||
d62a17ae | 432 | static void rtadv_process_solicit(struct interface *ifp) |
718e3744 | 433 | { |
d62a17ae | 434 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); |
435 | struct zebra_ns *zns = zvrf->zns; | |
718e3744 | 436 | |
d62a17ae | 437 | assert(zns); |
438 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
718e3744 | 439 | } |
440 | ||
d62a17ae | 441 | static void rtadv_process_advert(u_char *msg, unsigned int len, |
442 | struct interface *ifp, | |
443 | struct sockaddr_in6 *addr) | |
718e3744 | 444 | { |
d62a17ae | 445 | struct nd_router_advert *radvert; |
446 | char addr_str[INET6_ADDRSTRLEN]; | |
447 | struct zebra_if *zif; | |
448 | struct prefix p; | |
718e3744 | 449 | |
d62a17ae | 450 | zif = ifp->info; |
a80beece | 451 | |
d62a17ae | 452 | inet_ntop(AF_INET6, &addr->sin6_addr, addr_str, INET6_ADDRSTRLEN); |
453 | ||
454 | if (len < sizeof(struct nd_router_advert)) { | |
455 | zlog_warn("%s(%u): Rx RA with invalid length %d from %s", | |
456 | ifp->name, ifp->ifindex, len, addr_str); | |
457 | return; | |
458 | } | |
459 | if (!IN6_IS_ADDR_LINKLOCAL(&addr->sin6_addr)) { | |
460 | zlog_warn( | |
461 | "%s(%u): Rx RA with non-linklocal source address from %s", | |
462 | ifp->name, ifp->ifindex, addr_str); | |
463 | return; | |
464 | } | |
465 | ||
466 | radvert = (struct nd_router_advert *)msg; | |
467 | ||
468 | if ((radvert->nd_ra_curhoplimit && zif->rtadv.AdvCurHopLimit) | |
469 | && (radvert->nd_ra_curhoplimit != zif->rtadv.AdvCurHopLimit)) { | |
470 | zlog_warn( | |
471 | "%s(%u): Rx RA - our AdvCurHopLimit doesn't agree with %s", | |
472 | ifp->name, ifp->ifindex, addr_str); | |
473 | } | |
474 | ||
475 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED) | |
476 | && !zif->rtadv.AdvManagedFlag) { | |
477 | zlog_warn( | |
478 | "%s(%u): Rx RA - our AdvManagedFlag doesn't agree with %s", | |
479 | ifp->name, ifp->ifindex, addr_str); | |
480 | } | |
481 | ||
482 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_OTHER) | |
483 | && !zif->rtadv.AdvOtherConfigFlag) { | |
484 | zlog_warn( | |
485 | "%s(%u): Rx RA - our AdvOtherConfigFlag doesn't agree with %s", | |
486 | ifp->name, ifp->ifindex, addr_str); | |
487 | } | |
488 | ||
489 | if ((radvert->nd_ra_reachable && zif->rtadv.AdvReachableTime) | |
490 | && (ntohl(radvert->nd_ra_reachable) | |
491 | != zif->rtadv.AdvReachableTime)) { | |
492 | zlog_warn( | |
493 | "%s(%u): Rx RA - our AdvReachableTime doesn't agree with %s", | |
494 | ifp->name, ifp->ifindex, addr_str); | |
495 | } | |
496 | ||
497 | if ((radvert->nd_ra_retransmit && zif->rtadv.AdvRetransTimer) | |
498 | && (ntohl(radvert->nd_ra_retransmit) | |
499 | != (unsigned int)zif->rtadv.AdvRetransTimer)) { | |
500 | zlog_warn( | |
501 | "%s(%u): Rx RA - our AdvRetransTimer doesn't agree with %s", | |
502 | ifp->name, ifp->ifindex, addr_str); | |
503 | } | |
504 | ||
505 | /* Create entry for neighbor if not known. */ | |
506 | p.family = AF_INET6; | |
507 | IPV6_ADDR_COPY(&p.u.prefix, &addr->sin6_addr); | |
508 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
509 | ||
510 | if (!nbr_connected_check(ifp, &p)) | |
511 | nbr_connected_add_ipv6(ifp, &addr->sin6_addr); | |
718e3744 | 512 | } |
513 | ||
d62a17ae | 514 | |
515 | static void rtadv_process_packet(u_char *buf, unsigned int len, | |
516 | ifindex_t ifindex, int hoplimit, | |
517 | struct sockaddr_in6 *from, | |
518 | struct zebra_ns *zns) | |
718e3744 | 519 | { |
d62a17ae | 520 | struct icmp6_hdr *icmph; |
521 | struct interface *ifp; | |
522 | struct zebra_if *zif; | |
523 | char addr_str[INET6_ADDRSTRLEN]; | |
524 | ||
525 | inet_ntop(AF_INET6, &from->sin6_addr, addr_str, INET6_ADDRSTRLEN); | |
526 | ||
527 | /* Interface search. */ | |
528 | ifp = if_lookup_by_index_per_ns(zns, ifindex); | |
529 | if (ifp == NULL) { | |
530 | zlog_warn("RA/RS received on unknown IF %u from %s", ifindex, | |
531 | addr_str); | |
532 | return; | |
533 | } | |
534 | ||
535 | if (IS_ZEBRA_DEBUG_PACKET) | |
536 | zlog_debug("%s(%u): Rx RA/RS len %d from %s", ifp->name, | |
537 | ifp->ifindex, len, addr_str); | |
538 | ||
539 | if (if_is_loopback(ifp) | |
540 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) | |
541 | return; | |
718e3744 | 542 | |
d62a17ae | 543 | /* Check interface configuration. */ |
544 | zif = ifp->info; | |
545 | if (!zif->rtadv.AdvSendAdvertisements) | |
546 | return; | |
718e3744 | 547 | |
d62a17ae | 548 | /* ICMP message length check. */ |
549 | if (len < sizeof(struct icmp6_hdr)) { | |
550 | zlog_warn("%s(%u): Rx RA with Invalid ICMPV6 packet length %d", | |
551 | ifp->name, ifp->ifindex, len); | |
552 | return; | |
553 | } | |
554 | ||
555 | icmph = (struct icmp6_hdr *)buf; | |
718e3744 | 556 | |
d62a17ae | 557 | /* ICMP message type check. */ |
558 | if (icmph->icmp6_type != ND_ROUTER_SOLICIT | |
559 | && icmph->icmp6_type != ND_ROUTER_ADVERT) { | |
560 | zlog_warn("%s(%u): Rx RA - Unwanted ICMPV6 message type %d", | |
561 | ifp->name, ifp->ifindex, icmph->icmp6_type); | |
562 | return; | |
563 | } | |
718e3744 | 564 | |
d62a17ae | 565 | /* Hoplimit check. */ |
566 | if (hoplimit >= 0 && hoplimit != 255) { | |
567 | zlog_warn("%s(%u): Rx RA - Invalid hoplimit %d", ifp->name, | |
568 | ifp->ifindex, hoplimit); | |
569 | return; | |
570 | } | |
718e3744 | 571 | |
d62a17ae | 572 | /* Check ICMP message type. */ |
573 | if (icmph->icmp6_type == ND_ROUTER_SOLICIT) | |
574 | rtadv_process_solicit(ifp); | |
575 | else if (icmph->icmp6_type == ND_ROUTER_ADVERT) | |
576 | rtadv_process_advert(buf, len, ifp, from); | |
718e3744 | 577 | |
d62a17ae | 578 | return; |
718e3744 | 579 | } |
580 | ||
d62a17ae | 581 | static int rtadv_read(struct thread *thread) |
718e3744 | 582 | { |
d62a17ae | 583 | int sock; |
584 | int len; | |
585 | u_char buf[RTADV_MSG_SIZE]; | |
586 | struct sockaddr_in6 from; | |
587 | ifindex_t ifindex = 0; | |
588 | int hoplimit = -1; | |
589 | struct zebra_ns *zns = THREAD_ARG(thread); | |
590 | ||
591 | sock = THREAD_FD(thread); | |
592 | zns->rtadv.ra_read = NULL; | |
593 | ||
594 | /* Register myself. */ | |
595 | rtadv_event(zns, RTADV_READ, sock); | |
596 | ||
597 | len = rtadv_recv_packet(zns, sock, buf, sizeof(buf), &from, &ifindex, | |
598 | &hoplimit); | |
599 | ||
600 | if (len < 0) { | |
601 | zlog_warn("RA/RS recv failed, socket %u error %s", sock, | |
602 | safe_strerror(errno)); | |
603 | return len; | |
604 | } | |
605 | ||
606 | rtadv_process_packet(buf, (unsigned)len, ifindex, hoplimit, &from, zns); | |
607 | ||
608 | return 0; | |
718e3744 | 609 | } |
6b0655a2 | 610 | |
d62a17ae | 611 | static int rtadv_make_socket(void) |
718e3744 | 612 | { |
d62a17ae | 613 | int sock; |
614 | int ret = 0; | |
615 | struct icmp6_filter filter; | |
616 | ||
617 | if (zserv_privs.change(ZPRIVS_RAISE)) | |
618 | zlog_err("rtadv_make_socket: could not raise privs, %s", | |
619 | safe_strerror(errno)); | |
620 | ||
621 | sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); | |
622 | ||
623 | if (zserv_privs.change(ZPRIVS_LOWER)) | |
624 | zlog_err("rtadv_make_socket: could not lower privs, %s", | |
625 | safe_strerror(errno)); | |
626 | ||
627 | if (sock < 0) { | |
628 | close(sock); | |
629 | return -1; | |
630 | } | |
631 | ||
632 | ret = setsockopt_ipv6_pktinfo(sock, 1); | |
633 | if (ret < 0) { | |
634 | close(sock); | |
635 | return ret; | |
636 | } | |
637 | ret = setsockopt_ipv6_multicast_loop(sock, 0); | |
638 | if (ret < 0) { | |
639 | close(sock); | |
640 | return ret; | |
641 | } | |
642 | ret = setsockopt_ipv6_unicast_hops(sock, 255); | |
643 | if (ret < 0) { | |
644 | close(sock); | |
645 | return ret; | |
646 | } | |
647 | ret = setsockopt_ipv6_multicast_hops(sock, 255); | |
648 | if (ret < 0) { | |
649 | close(sock); | |
650 | return ret; | |
651 | } | |
652 | ret = setsockopt_ipv6_hoplimit(sock, 1); | |
653 | if (ret < 0) { | |
654 | close(sock); | |
655 | return ret; | |
656 | } | |
657 | ||
658 | ICMP6_FILTER_SETBLOCKALL(&filter); | |
659 | ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter); | |
660 | ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter); | |
661 | ||
662 | ret = setsockopt(sock, IPPROTO_ICMPV6, ICMP6_FILTER, &filter, | |
663 | sizeof(struct icmp6_filter)); | |
664 | if (ret < 0) { | |
665 | zlog_info("ICMP6_FILTER set fail: %s", safe_strerror(errno)); | |
666 | return ret; | |
667 | } | |
668 | ||
669 | return sock; | |
718e3744 | 670 | } |
671 | ||
d62a17ae | 672 | static struct rtadv_prefix *rtadv_prefix_new(void) |
718e3744 | 673 | { |
d62a17ae | 674 | return XCALLOC(MTYPE_RTADV_PREFIX, sizeof(struct rtadv_prefix)); |
718e3744 | 675 | } |
676 | ||
d62a17ae | 677 | static void rtadv_prefix_free(struct rtadv_prefix *rtadv_prefix) |
718e3744 | 678 | { |
d62a17ae | 679 | XFREE(MTYPE_RTADV_PREFIX, rtadv_prefix); |
680 | } | |
718e3744 | 681 | |
d62a17ae | 682 | static struct rtadv_prefix *rtadv_prefix_lookup(struct list *rplist, |
683 | struct prefix_ipv6 *p) | |
684 | { | |
685 | struct listnode *node; | |
686 | struct rtadv_prefix *rprefix; | |
687 | ||
688 | for (ALL_LIST_ELEMENTS_RO(rplist, node, rprefix)) | |
689 | if (prefix_same((struct prefix *)&rprefix->prefix, | |
690 | (struct prefix *)p)) | |
691 | return rprefix; | |
692 | return NULL; | |
718e3744 | 693 | } |
694 | ||
d62a17ae | 695 | static struct rtadv_prefix *rtadv_prefix_get(struct list *rplist, |
696 | struct prefix_ipv6 *p) | |
718e3744 | 697 | { |
d62a17ae | 698 | struct rtadv_prefix *rprefix; |
699 | ||
700 | rprefix = rtadv_prefix_lookup(rplist, p); | |
701 | if (rprefix) | |
702 | return rprefix; | |
718e3744 | 703 | |
d62a17ae | 704 | rprefix = rtadv_prefix_new(); |
705 | memcpy(&rprefix->prefix, p, sizeof(struct prefix_ipv6)); | |
706 | listnode_add(rplist, rprefix); | |
718e3744 | 707 | |
d62a17ae | 708 | return rprefix; |
718e3744 | 709 | } |
710 | ||
d62a17ae | 711 | static void rtadv_prefix_set(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 712 | { |
d62a17ae | 713 | struct rtadv_prefix *rprefix; |
714 | ||
715 | rprefix = rtadv_prefix_get(zif->rtadv.AdvPrefixList, &rp->prefix); | |
716 | ||
717 | /* Set parameters. */ | |
718 | rprefix->AdvValidLifetime = rp->AdvValidLifetime; | |
719 | rprefix->AdvPreferredLifetime = rp->AdvPreferredLifetime; | |
720 | rprefix->AdvOnLinkFlag = rp->AdvOnLinkFlag; | |
721 | rprefix->AdvAutonomousFlag = rp->AdvAutonomousFlag; | |
722 | rprefix->AdvRouterAddressFlag = rp->AdvRouterAddressFlag; | |
718e3744 | 723 | } |
724 | ||
d62a17ae | 725 | static int rtadv_prefix_reset(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 726 | { |
d62a17ae | 727 | struct rtadv_prefix *rprefix; |
728 | ||
729 | rprefix = rtadv_prefix_lookup(zif->rtadv.AdvPrefixList, &rp->prefix); | |
730 | if (rprefix != NULL) { | |
731 | listnode_delete(zif->rtadv.AdvPrefixList, (void *)rprefix); | |
732 | rtadv_prefix_free(rprefix); | |
733 | return 1; | |
734 | } else | |
735 | return 0; | |
718e3744 | 736 | } |
737 | ||
d62a17ae | 738 | static void ipv6_nd_suppress_ra_set(struct interface *ifp, |
739 | ipv6_nd_suppress_ra_status status) | |
b6120505 | 740 | { |
d62a17ae | 741 | struct zebra_if *zif; |
742 | struct zebra_vrf *zvrf; | |
743 | struct zebra_ns *zns; | |
744 | ||
745 | zif = ifp->info; | |
746 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
747 | zns = zvrf->zns; | |
748 | ||
749 | if (status == RA_SUPPRESS) { | |
750 | /* RA is currently enabled */ | |
751 | if (zif->rtadv.AdvSendAdvertisements) { | |
752 | zif->rtadv.AdvSendAdvertisements = 0; | |
753 | zif->rtadv.AdvIntervalTimer = 0; | |
754 | zns->rtadv.adv_if_count--; | |
755 | ||
756 | if_leave_all_router(zns->rtadv.sock, ifp); | |
757 | ||
758 | if (zns->rtadv.adv_if_count == 0) | |
759 | rtadv_event(zns, RTADV_STOP, 0); | |
760 | } | |
761 | } else { | |
762 | if (!zif->rtadv.AdvSendAdvertisements) { | |
763 | zif->rtadv.AdvSendAdvertisements = 1; | |
764 | zif->rtadv.AdvIntervalTimer = 0; | |
765 | zns->rtadv.adv_if_count++; | |
766 | ||
767 | if (zif->rtadv.MaxRtrAdvInterval >= 1000) { | |
768 | /* Enable Fast RA only when RA interval is in | |
769 | * secs */ | |
770 | zif->rtadv.inFastRexmit = 1; | |
771 | zif->rtadv.NumFastReXmitsRemain = | |
772 | RTADV_NUM_FAST_REXMITS; | |
773 | } | |
774 | ||
775 | if_join_all_router(zns->rtadv.sock, ifp); | |
776 | ||
777 | if (zns->rtadv.adv_if_count == 1) | |
778 | rtadv_event(zns, RTADV_START, zns->rtadv.sock); | |
779 | } | |
780 | } | |
b6120505 DW |
781 | } |
782 | ||
4a04e5f7 | 783 | /* |
784 | * Handle client (BGP) message to enable or disable IPv6 RA on an interface. | |
785 | * Note that while the client could request RA on an interface on which the | |
786 | * operator has not enabled RA, RA won't be disabled upon client request | |
5c81b96a | 787 | * if the operator has explicitly enabled RA. The enable request can also |
788 | * specify a RA interval (in seconds). | |
4a04e5f7 | 789 | */ |
d62a17ae | 790 | void zebra_interface_radv_set(struct zserv *client, int sock, u_short length, |
791 | struct zebra_vrf *zvrf, int enable) | |
4a04e5f7 | 792 | { |
d62a17ae | 793 | struct stream *s; |
794 | unsigned int ifindex; | |
795 | struct interface *ifp; | |
796 | struct zebra_if *zif; | |
797 | int ra_interval; | |
798 | ||
799 | s = client->ibuf; | |
800 | ||
801 | /* Get interface index and RA interval. */ | |
802 | ifindex = stream_getl(s); | |
803 | ra_interval = stream_getl(s); | |
804 | ||
805 | if (IS_ZEBRA_DEBUG_EVENT) | |
806 | zlog_debug("%u: IF %u RA %s from client %s, interval %ds", | |
807 | zvrf_id(zvrf), ifindex, | |
808 | enable ? "enable" : "disable", | |
809 | zebra_route_string(client->proto), ra_interval); | |
810 | ||
811 | /* Locate interface and check VRF match. */ | |
812 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex); | |
813 | if (!ifp) { | |
814 | zlog_warn("%u: IF %u RA %s client %s - interface unknown", | |
815 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", | |
816 | zebra_route_string(client->proto)); | |
817 | return; | |
818 | } | |
819 | if (ifp->vrf_id != zvrf_id(zvrf)) { | |
820 | zlog_warn("%u: IF %u RA %s client %s - VRF mismatch, IF VRF %u", | |
821 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", | |
822 | zebra_route_string(client->proto), ifp->vrf_id); | |
823 | return; | |
824 | } | |
825 | ||
826 | zif = ifp->info; | |
827 | if (enable) { | |
828 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); | |
829 | if (ra_interval | |
830 | && (ra_interval * 1000) < zif->rtadv.MaxRtrAdvInterval) | |
831 | zif->rtadv.MaxRtrAdvInterval = ra_interval * 1000; | |
832 | } else { | |
833 | if (!zif->rtadv.configured) { | |
834 | zif->rtadv.MaxRtrAdvInterval = | |
835 | RTADV_MAX_RTR_ADV_INTERVAL; | |
836 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); | |
837 | } | |
838 | } | |
4a04e5f7 | 839 | } |
840 | ||
718e3744 | 841 | DEFUN (ipv6_nd_suppress_ra, |
842 | ipv6_nd_suppress_ra_cmd, | |
843 | "ipv6 nd suppress-ra", | |
3e31cded | 844 | "Interface IPv6 config commands\n" |
718e3744 | 845 | "Neighbor discovery\n" |
846 | "Suppress Router Advertisement\n") | |
847 | { | |
d62a17ae | 848 | VTY_DECLVAR_CONTEXT(interface, ifp); |
849 | struct zebra_if *zif = ifp->info; | |
850 | ||
851 | if (if_is_loopback(ifp) | |
852 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
853 | vty_out(vty, | |
854 | "Cannot configure IPv6 Router Advertisements on this interface\n"); | |
855 | return CMD_WARNING_CONFIG_FAILED; | |
856 | } | |
857 | ||
858 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); | |
859 | zif->rtadv.configured = 0; | |
860 | return CMD_SUCCESS; | |
718e3744 | 861 | } |
862 | ||
718e3744 | 863 | DEFUN (no_ipv6_nd_suppress_ra, |
864 | no_ipv6_nd_suppress_ra_cmd, | |
865 | "no ipv6 nd suppress-ra", | |
866 | NO_STR | |
3e31cded | 867 | "Interface IPv6 config commands\n" |
718e3744 | 868 | "Neighbor discovery\n" |
869 | "Suppress Router Advertisement\n") | |
870 | { | |
d62a17ae | 871 | VTY_DECLVAR_CONTEXT(interface, ifp); |
872 | struct zebra_if *zif = ifp->info; | |
873 | ||
874 | if (if_is_loopback(ifp) | |
875 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
876 | vty_out(vty, | |
877 | "Cannot configure IPv6 Router Advertisements on this interface\n"); | |
878 | return CMD_WARNING_CONFIG_FAILED; | |
879 | } | |
880 | ||
881 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); | |
882 | zif->rtadv.configured = 1; | |
883 | return CMD_SUCCESS; | |
718e3744 | 884 | } |
885 | ||
7cee1bb1 | 886 | DEFUN (ipv6_nd_ra_interval_msec, |
887 | ipv6_nd_ra_interval_msec_cmd, | |
6147e2c6 | 888 | "ipv6 nd ra-interval msec (70-1800000)", |
7cee1bb1 | 889 | "Interface IPv6 config commands\n" |
890 | "Neighbor discovery\n" | |
891 | "Router Advertisement interval\n" | |
3a2d747c | 892 | "Router Advertisement interval in milliseconds\n" |
7cee1bb1 | 893 | "Router Advertisement interval in milliseconds\n") |
894 | { | |
d62a17ae | 895 | int idx_number = 4; |
896 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
897 | unsigned interval; | |
898 | struct zebra_if *zif = ifp->info; | |
899 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); | |
900 | struct zebra_ns *zns; | |
901 | ||
902 | zns = zvrf->zns; | |
903 | interval = strtoul(argv[idx_number]->arg, NULL, 10); | |
904 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
905 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime * 1000)) { | |
906 | vty_out(vty, | |
907 | "This ra-interval would conflict with configured ra-lifetime!\n"); | |
908 | return CMD_WARNING_CONFIG_FAILED; | |
909 | } | |
910 | ||
911 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
912 | zns->rtadv.adv_msec_if_count--; | |
913 | ||
914 | if (interval % 1000) | |
915 | zns->rtadv.adv_msec_if_count++; | |
916 | ||
917 | zif->rtadv.MaxRtrAdvInterval = interval; | |
918 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
919 | zif->rtadv.AdvIntervalTimer = 0; | |
920 | ||
921 | return CMD_SUCCESS; | |
7cee1bb1 | 922 | } |
923 | ||
718e3744 | 924 | DEFUN (ipv6_nd_ra_interval, |
925 | ipv6_nd_ra_interval_cmd, | |
6147e2c6 | 926 | "ipv6 nd ra-interval (1-1800)", |
3e31cded | 927 | "Interface IPv6 config commands\n" |
718e3744 | 928 | "Neighbor discovery\n" |
929 | "Router Advertisement interval\n" | |
930 | "Router Advertisement interval in seconds\n") | |
931 | { | |
d62a17ae | 932 | int idx_number = 3; |
933 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
934 | unsigned interval; | |
935 | struct zebra_if *zif = ifp->info; | |
936 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); | |
937 | struct zebra_ns *zns; | |
938 | ||
939 | zns = zvrf->zns; | |
940 | interval = strtoul(argv[idx_number]->arg, NULL, 10); | |
941 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
942 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime)) { | |
943 | vty_out(vty, | |
944 | "This ra-interval would conflict with configured ra-lifetime!\n"); | |
945 | return CMD_WARNING_CONFIG_FAILED; | |
946 | } | |
947 | ||
948 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
949 | zns->rtadv.adv_msec_if_count--; | |
950 | ||
951 | /* convert to milliseconds */ | |
952 | interval = interval * 1000; | |
953 | ||
954 | zif->rtadv.MaxRtrAdvInterval = interval; | |
955 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
956 | zif->rtadv.AdvIntervalTimer = 0; | |
957 | ||
958 | return CMD_SUCCESS; | |
718e3744 | 959 | } |
960 | ||
961 | DEFUN (no_ipv6_nd_ra_interval, | |
962 | no_ipv6_nd_ra_interval_cmd, | |
34ccea1e | 963 | "no ipv6 nd ra-interval [<(1-1800)|msec (1-1800000)>]", |
718e3744 | 964 | NO_STR |
3e31cded | 965 | "Interface IPv6 config commands\n" |
718e3744 | 966 | "Neighbor discovery\n" |
34ccea1e QY |
967 | "Router Advertisement interval\n" |
968 | "Router Advertisement interval in seconds\n" | |
969 | "Specify millisecond router advertisement interval\n" | |
970 | "Router Advertisement interval in milliseconds\n") | |
718e3744 | 971 | { |
d62a17ae | 972 | VTY_DECLVAR_CONTEXT(interface, ifp); |
973 | struct zebra_if *zif = ifp->info; | |
974 | struct zebra_vrf *zvrf; | |
975 | struct zebra_ns *zns; | |
976 | ||
977 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
978 | zns = zvrf->zns; | |
979 | ||
980 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
981 | zns->rtadv.adv_msec_if_count--; | |
982 | ||
983 | zif->rtadv.MaxRtrAdvInterval = RTADV_MAX_RTR_ADV_INTERVAL; | |
984 | zif->rtadv.MinRtrAdvInterval = RTADV_MIN_RTR_ADV_INTERVAL; | |
985 | zif->rtadv.AdvIntervalTimer = zif->rtadv.MaxRtrAdvInterval; | |
986 | ||
987 | return CMD_SUCCESS; | |
718e3744 | 988 | } |
989 | ||
990 | DEFUN (ipv6_nd_ra_lifetime, | |
991 | ipv6_nd_ra_lifetime_cmd, | |
6147e2c6 | 992 | "ipv6 nd ra-lifetime (0-9000)", |
3e31cded | 993 | "Interface IPv6 config commands\n" |
718e3744 | 994 | "Neighbor discovery\n" |
995 | "Router lifetime\n" | |
4afa50b3 | 996 | "Router lifetime in seconds (0 stands for a non-default gw)\n") |
718e3744 | 997 | { |
d62a17ae | 998 | int idx_number = 3; |
999 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1000 | struct zebra_if *zif = ifp->info; | |
1001 | int lifetime; | |
1002 | ||
1003 | lifetime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1004 | ||
1005 | /* The value to be placed in the Router Lifetime field | |
1006 | * of Router Advertisements sent from the interface, | |
1007 | * in seconds. MUST be either zero or between | |
1008 | * MaxRtrAdvInterval and 9000 seconds. -- RFC4861, 6.2.1 */ | |
1009 | if ((lifetime != 0 && lifetime * 1000 < zif->rtadv.MaxRtrAdvInterval)) { | |
1010 | vty_out(vty, | |
1011 | "This ra-lifetime would conflict with configured ra-interval\n"); | |
1012 | return CMD_WARNING_CONFIG_FAILED; | |
1013 | } | |
1014 | ||
1015 | zif->rtadv.AdvDefaultLifetime = lifetime; | |
1016 | ||
1017 | return CMD_SUCCESS; | |
718e3744 | 1018 | } |
1019 | ||
1020 | DEFUN (no_ipv6_nd_ra_lifetime, | |
1021 | no_ipv6_nd_ra_lifetime_cmd, | |
34ccea1e | 1022 | "no ipv6 nd ra-lifetime [(0-9000)]", |
718e3744 | 1023 | NO_STR |
3e31cded | 1024 | "Interface IPv6 config commands\n" |
718e3744 | 1025 | "Neighbor discovery\n" |
34ccea1e QY |
1026 | "Router lifetime\n" |
1027 | "Router lifetime in seconds (0 stands for a non-default gw)\n") | |
718e3744 | 1028 | { |
d62a17ae | 1029 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1030 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1031 | |
d62a17ae | 1032 | zif->rtadv.AdvDefaultLifetime = -1; |
718e3744 | 1033 | |
d62a17ae | 1034 | return CMD_SUCCESS; |
718e3744 | 1035 | } |
1036 | ||
1037 | DEFUN (ipv6_nd_reachable_time, | |
1038 | ipv6_nd_reachable_time_cmd, | |
6147e2c6 | 1039 | "ipv6 nd reachable-time (1-3600000)", |
3e31cded | 1040 | "Interface IPv6 config commands\n" |
718e3744 | 1041 | "Neighbor discovery\n" |
1042 | "Reachable time\n" | |
1043 | "Reachable time in milliseconds\n") | |
1044 | { | |
d62a17ae | 1045 | int idx_number = 3; |
1046 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1047 | struct zebra_if *zif = ifp->info; | |
1048 | zif->rtadv.AdvReachableTime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1049 | return CMD_SUCCESS; | |
718e3744 | 1050 | } |
1051 | ||
1052 | DEFUN (no_ipv6_nd_reachable_time, | |
1053 | no_ipv6_nd_reachable_time_cmd, | |
34ccea1e | 1054 | "no ipv6 nd reachable-time [(1-3600000)]", |
718e3744 | 1055 | NO_STR |
3e31cded | 1056 | "Interface IPv6 config commands\n" |
718e3744 | 1057 | "Neighbor discovery\n" |
34ccea1e QY |
1058 | "Reachable time\n" |
1059 | "Reachable time in milliseconds\n") | |
718e3744 | 1060 | { |
d62a17ae | 1061 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1062 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1063 | |
d62a17ae | 1064 | zif->rtadv.AdvReachableTime = 0; |
718e3744 | 1065 | |
d62a17ae | 1066 | return CMD_SUCCESS; |
718e3744 | 1067 | } |
1068 | ||
7cee1bb1 | 1069 | DEFUN (ipv6_nd_homeagent_preference, |
1070 | ipv6_nd_homeagent_preference_cmd, | |
6147e2c6 | 1071 | "ipv6 nd home-agent-preference (0-65535)", |
7cee1bb1 | 1072 | "Interface IPv6 config commands\n" |
1073 | "Neighbor discovery\n" | |
1074 | "Home Agent preference\n" | |
4afa50b3 | 1075 | "preference value (default is 0, least preferred)\n") |
7cee1bb1 | 1076 | { |
d62a17ae | 1077 | int idx_number = 3; |
1078 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1079 | struct zebra_if *zif = ifp->info; | |
1080 | zif->rtadv.HomeAgentPreference = | |
1081 | strtoul(argv[idx_number]->arg, NULL, 10); | |
1082 | return CMD_SUCCESS; | |
7cee1bb1 | 1083 | } |
1084 | ||
1085 | DEFUN (no_ipv6_nd_homeagent_preference, | |
1086 | no_ipv6_nd_homeagent_preference_cmd, | |
34ccea1e | 1087 | "no ipv6 nd home-agent-preference [(0-65535)]", |
7cee1bb1 | 1088 | NO_STR |
1089 | "Interface IPv6 config commands\n" | |
1090 | "Neighbor discovery\n" | |
34ccea1e QY |
1091 | "Home Agent preference\n" |
1092 | "preference value (default is 0, least preferred)\n") | |
7cee1bb1 | 1093 | { |
d62a17ae | 1094 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1095 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1096 | |
d62a17ae | 1097 | zif->rtadv.HomeAgentPreference = 0; |
7cee1bb1 | 1098 | |
d62a17ae | 1099 | return CMD_SUCCESS; |
7cee1bb1 | 1100 | } |
1101 | ||
1102 | DEFUN (ipv6_nd_homeagent_lifetime, | |
1103 | ipv6_nd_homeagent_lifetime_cmd, | |
6147e2c6 | 1104 | "ipv6 nd home-agent-lifetime (0-65520)", |
7cee1bb1 | 1105 | "Interface IPv6 config commands\n" |
1106 | "Neighbor discovery\n" | |
1107 | "Home Agent lifetime\n" | |
4afa50b3 | 1108 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") |
7cee1bb1 | 1109 | { |
d62a17ae | 1110 | int idx_number = 3; |
1111 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1112 | struct zebra_if *zif = ifp->info; | |
1113 | zif->rtadv.HomeAgentLifetime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1114 | return CMD_SUCCESS; | |
7cee1bb1 | 1115 | } |
1116 | ||
1117 | DEFUN (no_ipv6_nd_homeagent_lifetime, | |
1118 | no_ipv6_nd_homeagent_lifetime_cmd, | |
34ccea1e | 1119 | "no ipv6 nd home-agent-lifetime [(0-65520)]", |
7cee1bb1 | 1120 | NO_STR |
1121 | "Interface IPv6 config commands\n" | |
1122 | "Neighbor discovery\n" | |
34ccea1e QY |
1123 | "Home Agent lifetime\n" |
1124 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") | |
7cee1bb1 | 1125 | { |
d62a17ae | 1126 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1127 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1128 | |
d62a17ae | 1129 | zif->rtadv.HomeAgentLifetime = -1; |
7cee1bb1 | 1130 | |
d62a17ae | 1131 | return CMD_SUCCESS; |
7cee1bb1 | 1132 | } |
1133 | ||
718e3744 | 1134 | DEFUN (ipv6_nd_managed_config_flag, |
1135 | ipv6_nd_managed_config_flag_cmd, | |
1136 | "ipv6 nd managed-config-flag", | |
3e31cded | 1137 | "Interface IPv6 config commands\n" |
718e3744 | 1138 | "Neighbor discovery\n" |
1139 | "Managed address configuration flag\n") | |
1140 | { | |
d62a17ae | 1141 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1142 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1143 | |
d62a17ae | 1144 | zif->rtadv.AdvManagedFlag = 1; |
718e3744 | 1145 | |
d62a17ae | 1146 | return CMD_SUCCESS; |
718e3744 | 1147 | } |
1148 | ||
1149 | DEFUN (no_ipv6_nd_managed_config_flag, | |
1150 | no_ipv6_nd_managed_config_flag_cmd, | |
1151 | "no ipv6 nd managed-config-flag", | |
1152 | NO_STR | |
3e31cded | 1153 | "Interface IPv6 config commands\n" |
718e3744 | 1154 | "Neighbor discovery\n" |
1155 | "Managed address configuration flag\n") | |
1156 | { | |
d62a17ae | 1157 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1158 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1159 | |
d62a17ae | 1160 | zif->rtadv.AdvManagedFlag = 0; |
718e3744 | 1161 | |
d62a17ae | 1162 | return CMD_SUCCESS; |
718e3744 | 1163 | } |
1164 | ||
7cee1bb1 | 1165 | DEFUN (ipv6_nd_homeagent_config_flag, |
1166 | ipv6_nd_homeagent_config_flag_cmd, | |
1167 | "ipv6 nd home-agent-config-flag", | |
1168 | "Interface IPv6 config commands\n" | |
1169 | "Neighbor discovery\n" | |
1170 | "Home Agent configuration flag\n") | |
1171 | { | |
d62a17ae | 1172 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1173 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1174 | |
d62a17ae | 1175 | zif->rtadv.AdvHomeAgentFlag = 1; |
7cee1bb1 | 1176 | |
d62a17ae | 1177 | return CMD_SUCCESS; |
7cee1bb1 | 1178 | } |
1179 | ||
1180 | DEFUN (no_ipv6_nd_homeagent_config_flag, | |
1181 | no_ipv6_nd_homeagent_config_flag_cmd, | |
1182 | "no ipv6 nd home-agent-config-flag", | |
1183 | NO_STR | |
1184 | "Interface IPv6 config commands\n" | |
1185 | "Neighbor discovery\n" | |
1186 | "Home Agent configuration flag\n") | |
1187 | { | |
d62a17ae | 1188 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1189 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1190 | |
d62a17ae | 1191 | zif->rtadv.AdvHomeAgentFlag = 0; |
7cee1bb1 | 1192 | |
d62a17ae | 1193 | return CMD_SUCCESS; |
7cee1bb1 | 1194 | } |
1195 | ||
1196 | DEFUN (ipv6_nd_adv_interval_config_option, | |
1197 | ipv6_nd_adv_interval_config_option_cmd, | |
1198 | "ipv6 nd adv-interval-option", | |
1199 | "Interface IPv6 config commands\n" | |
1200 | "Neighbor discovery\n" | |
1201 | "Advertisement Interval Option\n") | |
1202 | { | |
d62a17ae | 1203 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1204 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1205 | |
d62a17ae | 1206 | zif->rtadv.AdvIntervalOption = 1; |
7cee1bb1 | 1207 | |
d62a17ae | 1208 | return CMD_SUCCESS; |
7cee1bb1 | 1209 | } |
1210 | ||
1211 | DEFUN (no_ipv6_nd_adv_interval_config_option, | |
1212 | no_ipv6_nd_adv_interval_config_option_cmd, | |
1213 | "no ipv6 nd adv-interval-option", | |
1214 | NO_STR | |
1215 | "Interface IPv6 config commands\n" | |
1216 | "Neighbor discovery\n" | |
1217 | "Advertisement Interval Option\n") | |
1218 | { | |
d62a17ae | 1219 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1220 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1221 | |
d62a17ae | 1222 | zif->rtadv.AdvIntervalOption = 0; |
7cee1bb1 | 1223 | |
d62a17ae | 1224 | return CMD_SUCCESS; |
7cee1bb1 | 1225 | } |
1226 | ||
718e3744 | 1227 | DEFUN (ipv6_nd_other_config_flag, |
1228 | ipv6_nd_other_config_flag_cmd, | |
1229 | "ipv6 nd other-config-flag", | |
3e31cded | 1230 | "Interface IPv6 config commands\n" |
718e3744 | 1231 | "Neighbor discovery\n" |
1232 | "Other statefull configuration flag\n") | |
1233 | { | |
d62a17ae | 1234 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1235 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1236 | |
d62a17ae | 1237 | zif->rtadv.AdvOtherConfigFlag = 1; |
718e3744 | 1238 | |
d62a17ae | 1239 | return CMD_SUCCESS; |
718e3744 | 1240 | } |
1241 | ||
1242 | DEFUN (no_ipv6_nd_other_config_flag, | |
1243 | no_ipv6_nd_other_config_flag_cmd, | |
1244 | "no ipv6 nd other-config-flag", | |
1245 | NO_STR | |
3e31cded | 1246 | "Interface IPv6 config commands\n" |
718e3744 | 1247 | "Neighbor discovery\n" |
1248 | "Other statefull configuration flag\n") | |
1249 | { | |
d62a17ae | 1250 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1251 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1252 | |
d62a17ae | 1253 | zif->rtadv.AdvOtherConfigFlag = 0; |
718e3744 | 1254 | |
d62a17ae | 1255 | return CMD_SUCCESS; |
718e3744 | 1256 | } |
1257 | ||
3e31cded | 1258 | DEFUN (ipv6_nd_prefix, |
1259 | ipv6_nd_prefix_cmd, | |
34ccea1e | 1260 | "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 | 1261 | "Interface IPv6 config commands\n" |
718e3744 | 1262 | "Neighbor discovery\n" |
1263 | "Prefix information\n" | |
1264 | "IPv6 prefix\n" | |
1265 | "Valid lifetime in seconds\n" | |
3e31cded | 1266 | "Infinite valid lifetime\n" |
718e3744 | 1267 | "Preferred lifetime in seconds\n" |
3e31cded | 1268 | "Infinite preferred lifetime\n" |
34ccea1e | 1269 | "Set Router Address flag\n" |
3e31cded | 1270 | "Do not use prefix for onlink determination\n" |
7cee1bb1 | 1271 | "Do not use prefix for autoconfiguration\n" |
34ccea1e QY |
1272 | "Do not use prefix for autoconfiguration\n" |
1273 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1274 | { |
d62a17ae | 1275 | /* prelude */ |
1276 | char *prefix = argv[3]->arg; | |
1277 | int lifetimes = (argc > 4) && (argv[4]->type == RANGE_TKN | |
1278 | || strmatch(argv[4]->text, "infinite")); | |
1279 | int routeropts = lifetimes ? argc > 6 : argc > 4; | |
1280 | ||
1281 | int idx_routeropts = routeropts ? (lifetimes ? 6 : 4) : 0; | |
1282 | ||
1283 | char *lifetime = NULL, *preflifetime = NULL; | |
1284 | int routeraddr = 0, offlink = 0, noautoconf = 0; | |
1285 | if (lifetimes) { | |
1286 | lifetime = argv[4]->type == RANGE_TKN ? argv[4]->arg | |
1287 | : argv[4]->text; | |
1288 | preflifetime = argv[5]->type == RANGE_TKN ? argv[5]->arg | |
1289 | : argv[5]->text; | |
1290 | } | |
1291 | if (routeropts) { | |
1292 | routeraddr = | |
1293 | strmatch(argv[idx_routeropts]->text, "router-address"); | |
1294 | if (!routeraddr) { | |
1295 | offlink = (argc > idx_routeropts + 1 | |
1296 | || strmatch(argv[idx_routeropts]->text, | |
1297 | "off-link")); | |
1298 | noautoconf = (argc > idx_routeropts + 1 | |
1299 | || strmatch(argv[idx_routeropts]->text, | |
1300 | "no-autoconfig")); | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | /* business */ | |
1305 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1306 | struct zebra_if *zebra_if = ifp->info; | |
1307 | int ret; | |
1308 | struct rtadv_prefix rp; | |
1309 | ||
1310 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1311 | if (!ret) { | |
1312 | vty_out(vty, "Malformed IPv6 prefix\n"); | |
1313 | return CMD_WARNING_CONFIG_FAILED; | |
1314 | } | |
1315 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1316 | rp.AdvOnLinkFlag = !offlink; | |
1317 | rp.AdvAutonomousFlag = !noautoconf; | |
1318 | rp.AdvRouterAddressFlag = routeraddr; | |
1319 | rp.AdvValidLifetime = RTADV_VALID_LIFETIME; | |
1320 | rp.AdvPreferredLifetime = RTADV_PREFERRED_LIFETIME; | |
1321 | ||
1322 | if (lifetimes) { | |
1323 | rp.AdvValidLifetime = strmatch(lifetime, "infinite") | |
1324 | ? UINT32_MAX | |
1325 | : strtoll(lifetime, NULL, 10); | |
1326 | rp.AdvPreferredLifetime = | |
1327 | strmatch(preflifetime, "infinite") | |
1328 | ? UINT32_MAX | |
1329 | : strtoll(preflifetime, NULL, 10); | |
1330 | if (rp.AdvPreferredLifetime > rp.AdvValidLifetime) { | |
1331 | vty_out(vty, "Invalid preferred lifetime\n"); | |
1332 | return CMD_WARNING_CONFIG_FAILED; | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | rtadv_prefix_set(zebra_if, &rp); | |
1337 | ||
1338 | return CMD_SUCCESS; | |
718e3744 | 1339 | } |
1340 | ||
3e31cded | 1341 | DEFUN (no_ipv6_nd_prefix, |
1342 | no_ipv6_nd_prefix_cmd, | |
34ccea1e QY |
1343 | "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]>]", |
1344 | NO_STR | |
3e31cded | 1345 | "Interface IPv6 config commands\n" |
718e3744 | 1346 | "Neighbor discovery\n" |
1347 | "Prefix information\n" | |
34ccea1e QY |
1348 | "IPv6 prefix\n" |
1349 | "Valid lifetime in seconds\n" | |
1350 | "Infinite valid lifetime\n" | |
1351 | "Preferred lifetime in seconds\n" | |
1352 | "Infinite preferred lifetime\n" | |
1353 | "Set Router Address flag\n" | |
1354 | "Do not use prefix for onlink determination\n" | |
1355 | "Do not use prefix for autoconfiguration\n" | |
1356 | "Do not use prefix for autoconfiguration\n" | |
1357 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1358 | { |
d62a17ae | 1359 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1360 | struct zebra_if *zebra_if = ifp->info; | |
1361 | int ret; | |
1362 | struct rtadv_prefix rp; | |
1363 | char *prefix = argv[4]->arg; | |
1364 | ||
1365 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1366 | if (!ret) { | |
1367 | vty_out(vty, "Malformed IPv6 prefix\n"); | |
1368 | return CMD_WARNING_CONFIG_FAILED; | |
1369 | } | |
1370 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1371 | ||
1372 | ret = rtadv_prefix_reset(zebra_if, &rp); | |
1373 | if (!ret) { | |
1374 | vty_out(vty, "Non-existant IPv6 prefix\n"); | |
1375 | return CMD_WARNING_CONFIG_FAILED; | |
1376 | } | |
1377 | ||
1378 | return CMD_SUCCESS; | |
718e3744 | 1379 | } |
b60668d0 CC |
1380 | |
1381 | DEFUN (ipv6_nd_router_preference, | |
1382 | ipv6_nd_router_preference_cmd, | |
6147e2c6 | 1383 | "ipv6 nd router-preference <high|medium|low>", |
b60668d0 CC |
1384 | "Interface IPv6 config commands\n" |
1385 | "Neighbor discovery\n" | |
1386 | "Default router preference\n" | |
1387 | "High default router preference\n" | |
58f1b7cc DS |
1388 | "Medium default router preference (default)\n" |
1389 | "Low default router preference\n") | |
b60668d0 | 1390 | { |
d62a17ae | 1391 | int idx_high_medium_low = 3; |
1392 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1393 | struct zebra_if *zif = ifp->info; | |
1394 | int i = 0; | |
1395 | ||
1396 | while (0 != rtadv_pref_strs[i]) { | |
1397 | if (strncmp(argv[idx_high_medium_low]->arg, rtadv_pref_strs[i], | |
1398 | 1) | |
1399 | == 0) { | |
1400 | zif->rtadv.DefaultPreference = i; | |
1401 | return CMD_SUCCESS; | |
1402 | } | |
1403 | i++; | |
b60668d0 | 1404 | } |
b60668d0 | 1405 | |
d62a17ae | 1406 | return CMD_ERR_NO_MATCH; |
b60668d0 CC |
1407 | } |
1408 | ||
1409 | DEFUN (no_ipv6_nd_router_preference, | |
1410 | no_ipv6_nd_router_preference_cmd, | |
34ccea1e | 1411 | "no ipv6 nd router-preference [<high|medium|low>]", |
b60668d0 CC |
1412 | NO_STR |
1413 | "Interface IPv6 config commands\n" | |
1414 | "Neighbor discovery\n" | |
34ccea1e QY |
1415 | "Default router preference\n" |
1416 | "High default router preference\n" | |
1417 | "Medium default router preference (default)\n" | |
1418 | "Low default router preference\n") | |
b60668d0 | 1419 | { |
d62a17ae | 1420 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1421 | struct zebra_if *zif = ifp->info; | |
b60668d0 | 1422 | |
d62a17ae | 1423 | zif->rtadv.DefaultPreference = |
1424 | RTADV_PREF_MEDIUM; /* Default per RFC4191. */ | |
b60668d0 | 1425 | |
d62a17ae | 1426 | return CMD_SUCCESS; |
b60668d0 CC |
1427 | } |
1428 | ||
6ae93c05 DO |
1429 | DEFUN (ipv6_nd_mtu, |
1430 | ipv6_nd_mtu_cmd, | |
6147e2c6 | 1431 | "ipv6 nd mtu (1-65535)", |
6ae93c05 DO |
1432 | "Interface IPv6 config commands\n" |
1433 | "Neighbor discovery\n" | |
1434 | "Advertised MTU\n" | |
1435 | "MTU in bytes\n") | |
1436 | { | |
d62a17ae | 1437 | int idx_number = 3; |
1438 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1439 | struct zebra_if *zif = ifp->info; | |
1440 | zif->rtadv.AdvLinkMTU = strtoul(argv[idx_number]->arg, NULL, 10); | |
1441 | return CMD_SUCCESS; | |
6ae93c05 DO |
1442 | } |
1443 | ||
1444 | DEFUN (no_ipv6_nd_mtu, | |
1445 | no_ipv6_nd_mtu_cmd, | |
34ccea1e | 1446 | "no ipv6 nd mtu [(1-65535)]", |
6ae93c05 DO |
1447 | NO_STR |
1448 | "Interface IPv6 config commands\n" | |
1449 | "Neighbor discovery\n" | |
34ccea1e QY |
1450 | "Advertised MTU\n" |
1451 | "MTU in bytes\n") | |
6ae93c05 | 1452 | { |
d62a17ae | 1453 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1454 | struct zebra_if *zif = ifp->info; | |
1455 | zif->rtadv.AdvLinkMTU = 0; | |
1456 | return CMD_SUCCESS; | |
6ae93c05 DO |
1457 | } |
1458 | ||
6ae93c05 | 1459 | |
718e3744 | 1460 | /* Write configuration about router advertisement. */ |
d62a17ae | 1461 | void rtadv_config_write(struct vty *vty, struct interface *ifp) |
718e3744 | 1462 | { |
d62a17ae | 1463 | struct zebra_if *zif; |
1464 | struct listnode *node; | |
1465 | struct rtadv_prefix *rprefix; | |
1466 | char buf[PREFIX_STRLEN]; | |
1467 | int interval; | |
1468 | ||
1469 | zif = ifp->info; | |
1470 | ||
1471 | if (!(if_is_loopback(ifp) | |
1472 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK))) { | |
1473 | if (zif->rtadv.AdvSendAdvertisements) | |
1474 | vty_out(vty, " no ipv6 nd suppress-ra\n"); | |
1475 | } | |
1476 | ||
1477 | interval = zif->rtadv.MaxRtrAdvInterval; | |
1478 | if (interval % 1000) | |
1479 | vty_out(vty, " ipv6 nd ra-interval msec %d\n", interval); | |
1480 | else if (interval != RTADV_MAX_RTR_ADV_INTERVAL) | |
1481 | vty_out(vty, " ipv6 nd ra-interval %d\n", interval / 1000); | |
1482 | ||
1483 | if (zif->rtadv.AdvIntervalOption) | |
1484 | vty_out(vty, " ipv6 nd adv-interval-option\n"); | |
1485 | ||
1486 | if (zif->rtadv.AdvDefaultLifetime != -1) | |
1487 | vty_out(vty, " ipv6 nd ra-lifetime %d\n", | |
1488 | zif->rtadv.AdvDefaultLifetime); | |
1489 | ||
1490 | if (zif->rtadv.HomeAgentPreference) | |
1491 | vty_out(vty, " ipv6 nd home-agent-preference %u\n", | |
1492 | zif->rtadv.HomeAgentPreference); | |
1493 | ||
1494 | if (zif->rtadv.HomeAgentLifetime != -1) | |
1495 | vty_out(vty, " ipv6 nd home-agent-lifetime %u\n", | |
1496 | zif->rtadv.HomeAgentLifetime); | |
1497 | ||
1498 | if (zif->rtadv.AdvHomeAgentFlag) | |
1499 | vty_out(vty, " ipv6 nd home-agent-config-flag\n"); | |
1500 | ||
1501 | if (zif->rtadv.AdvReachableTime) | |
1502 | vty_out(vty, " ipv6 nd reachable-time %d\n", | |
1503 | zif->rtadv.AdvReachableTime); | |
1504 | ||
1505 | if (zif->rtadv.AdvManagedFlag) | |
1506 | vty_out(vty, " ipv6 nd managed-config-flag\n"); | |
1507 | ||
1508 | if (zif->rtadv.AdvOtherConfigFlag) | |
1509 | vty_out(vty, " ipv6 nd other-config-flag\n"); | |
1510 | ||
1511 | if (zif->rtadv.DefaultPreference != RTADV_PREF_MEDIUM) | |
1512 | vty_out(vty, " ipv6 nd router-preference %s\n", | |
1513 | rtadv_pref_strs[zif->rtadv.DefaultPreference]); | |
1514 | ||
1515 | if (zif->rtadv.AdvLinkMTU) | |
1516 | vty_out(vty, " ipv6 nd mtu %d\n", zif->rtadv.AdvLinkMTU); | |
1517 | ||
1518 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
1519 | vty_out(vty, " ipv6 nd prefix %s", | |
1520 | prefix2str(&rprefix->prefix, buf, sizeof(buf))); | |
1521 | if ((rprefix->AdvValidLifetime != RTADV_VALID_LIFETIME) | |
1522 | || (rprefix->AdvPreferredLifetime | |
1523 | != RTADV_PREFERRED_LIFETIME)) { | |
1524 | if (rprefix->AdvValidLifetime == UINT32_MAX) | |
1525 | vty_out(vty, " infinite"); | |
1526 | else | |
1527 | vty_out(vty, " %u", rprefix->AdvValidLifetime); | |
1528 | if (rprefix->AdvPreferredLifetime == UINT32_MAX) | |
1529 | vty_out(vty, " infinite"); | |
1530 | else | |
1531 | vty_out(vty, " %u", | |
1532 | rprefix->AdvPreferredLifetime); | |
1533 | } | |
1534 | if (!rprefix->AdvOnLinkFlag) | |
1535 | vty_out(vty, " off-link"); | |
1536 | if (!rprefix->AdvAutonomousFlag) | |
1537 | vty_out(vty, " no-autoconfig"); | |
1538 | if (rprefix->AdvRouterAddressFlag) | |
1539 | vty_out(vty, " router-address"); | |
1540 | vty_out(vty, "\n"); | |
3e31cded | 1541 | } |
718e3744 | 1542 | } |
1543 | ||
718e3744 | 1544 | |
d62a17ae | 1545 | static void rtadv_event(struct zebra_ns *zns, enum rtadv_event event, int val) |
718e3744 | 1546 | { |
d62a17ae | 1547 | struct rtadv *rtadv = &zns->rtadv; |
1548 | ||
1549 | switch (event) { | |
1550 | case RTADV_START: | |
1551 | thread_add_read(zebrad.master, rtadv_read, zns, val, | |
1552 | &rtadv->ra_read); | |
1553 | thread_add_event(zebrad.master, rtadv_timer, zns, 0, | |
1554 | &rtadv->ra_timer); | |
1555 | break; | |
1556 | case RTADV_STOP: | |
1557 | if (rtadv->ra_timer) { | |
1558 | thread_cancel(rtadv->ra_timer); | |
1559 | rtadv->ra_timer = NULL; | |
1560 | } | |
1561 | if (rtadv->ra_read) { | |
1562 | thread_cancel(rtadv->ra_read); | |
1563 | rtadv->ra_read = NULL; | |
1564 | } | |
1565 | break; | |
1566 | case RTADV_TIMER: | |
1567 | thread_add_timer(zebrad.master, rtadv_timer, zns, val, | |
1568 | &rtadv->ra_timer); | |
1569 | break; | |
1570 | case RTADV_TIMER_MSEC: | |
1571 | thread_add_timer_msec(zebrad.master, rtadv_timer, zns, val, | |
1572 | &rtadv->ra_timer); | |
1573 | break; | |
1574 | case RTADV_READ: | |
1575 | thread_add_read(zebrad.master, rtadv_read, zns, val, | |
1576 | &rtadv->ra_read); | |
1577 | break; | |
1578 | default: | |
1579 | break; | |
718e3744 | 1580 | } |
d62a17ae | 1581 | return; |
718e3744 | 1582 | } |
1583 | ||
d62a17ae | 1584 | void rtadv_init(struct zebra_ns *zns) |
718e3744 | 1585 | { |
d62a17ae | 1586 | zns->rtadv.sock = rtadv_make_socket(); |
cd80d74f | 1587 | } |
718e3744 | 1588 | |
d62a17ae | 1589 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 1590 | { |
d62a17ae | 1591 | rtadv_event(zns, RTADV_STOP, 0); |
1592 | if (zns->rtadv.sock >= 0) { | |
1593 | close(zns->rtadv.sock); | |
1594 | zns->rtadv.sock = -1; | |
1595 | } | |
1596 | ||
1597 | zns->rtadv.adv_if_count = 0; | |
1598 | zns->rtadv.adv_msec_if_count = 0; | |
cd80d74f | 1599 | } |
718e3744 | 1600 | |
d62a17ae | 1601 | void rtadv_cmd_init(void) |
cd80d74f | 1602 | { |
d62a17ae | 1603 | install_element(INTERFACE_NODE, &ipv6_nd_suppress_ra_cmd); |
1604 | install_element(INTERFACE_NODE, &no_ipv6_nd_suppress_ra_cmd); | |
1605 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_cmd); | |
1606 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_msec_cmd); | |
1607 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_interval_cmd); | |
1608 | install_element(INTERFACE_NODE, &ipv6_nd_ra_lifetime_cmd); | |
1609 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_lifetime_cmd); | |
1610 | install_element(INTERFACE_NODE, &ipv6_nd_reachable_time_cmd); | |
1611 | install_element(INTERFACE_NODE, &no_ipv6_nd_reachable_time_cmd); | |
1612 | install_element(INTERFACE_NODE, &ipv6_nd_managed_config_flag_cmd); | |
1613 | install_element(INTERFACE_NODE, &no_ipv6_nd_managed_config_flag_cmd); | |
1614 | install_element(INTERFACE_NODE, &ipv6_nd_other_config_flag_cmd); | |
1615 | install_element(INTERFACE_NODE, &no_ipv6_nd_other_config_flag_cmd); | |
1616 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_config_flag_cmd); | |
1617 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_config_flag_cmd); | |
1618 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_preference_cmd); | |
1619 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_preference_cmd); | |
1620 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_lifetime_cmd); | |
1621 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_lifetime_cmd); | |
1622 | install_element(INTERFACE_NODE, | |
1623 | &ipv6_nd_adv_interval_config_option_cmd); | |
1624 | install_element(INTERFACE_NODE, | |
1625 | &no_ipv6_nd_adv_interval_config_option_cmd); | |
1626 | install_element(INTERFACE_NODE, &ipv6_nd_prefix_cmd); | |
1627 | install_element(INTERFACE_NODE, &no_ipv6_nd_prefix_cmd); | |
1628 | install_element(INTERFACE_NODE, &ipv6_nd_router_preference_cmd); | |
1629 | install_element(INTERFACE_NODE, &no_ipv6_nd_router_preference_cmd); | |
1630 | install_element(INTERFACE_NODE, &ipv6_nd_mtu_cmd); | |
1631 | install_element(INTERFACE_NODE, &no_ipv6_nd_mtu_cmd); | |
718e3744 | 1632 | } |
1633 | ||
d62a17ae | 1634 | static int if_join_all_router(int sock, struct interface *ifp) |
718e3744 | 1635 | { |
d62a17ae | 1636 | int ret; |
718e3744 | 1637 | |
d62a17ae | 1638 | struct ipv6_mreq mreq; |
718e3744 | 1639 | |
d62a17ae | 1640 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
1641 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
1642 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 1643 | |
d62a17ae | 1644 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char *)&mreq, |
1645 | sizeof mreq); | |
1646 | if (ret < 0) | |
1647 | zlog_warn("%s(%u): Failed to join group, socket %u error %s", | |
1648 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 1649 | |
d62a17ae | 1650 | if (IS_ZEBRA_DEBUG_EVENT) |
1651 | zlog_debug( | |
1652 | "%s(%u): Join All-Routers multicast group, socket %u", | |
1653 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 1654 | |
d62a17ae | 1655 | return 0; |
718e3744 | 1656 | } |
1657 | ||
d62a17ae | 1658 | static int if_leave_all_router(int sock, struct interface *ifp) |
718e3744 | 1659 | { |
d62a17ae | 1660 | int ret; |
718e3744 | 1661 | |
d62a17ae | 1662 | struct ipv6_mreq mreq; |
718e3744 | 1663 | |
d62a17ae | 1664 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
1665 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
1666 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 1667 | |
d62a17ae | 1668 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_LEAVE_GROUP, (char *)&mreq, |
1669 | sizeof mreq); | |
1670 | if (ret < 0) | |
1671 | zlog_warn("%s(%u): Failed to leave group, socket %u error %s", | |
1672 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 1673 | |
d62a17ae | 1674 | if (IS_ZEBRA_DEBUG_EVENT) |
1675 | zlog_debug( | |
1676 | "%s(%u): Leave All-Routers multicast group, socket %u", | |
1677 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 1678 | |
d62a17ae | 1679 | return 0; |
718e3744 | 1680 | } |
1681 | ||
1682 | #else | |
d62a17ae | 1683 | void rtadv_init(struct zebra_ns *zns) |
cd80d74f | 1684 | { |
d62a17ae | 1685 | /* Empty.*/; |
cd80d74f | 1686 | } |
d62a17ae | 1687 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 1688 | { |
d62a17ae | 1689 | /* Empty.*/; |
cd80d74f | 1690 | } |
d62a17ae | 1691 | void rtadv_cmd_init(void) |
718e3744 | 1692 | { |
d62a17ae | 1693 | /* Empty.*/; |
718e3744 | 1694 | } |
56c1f7d8 | 1695 | #endif /* HAVE_RTADV */ |