]>
Commit | Line | Data |
---|---|---|
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 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
20 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
ac4d0be5 | 21 | * 02111-1307, USA. |
718e3744 | 22 | */ |
23 | ||
24 | #include <zebra.h> | |
25 | ||
26 | #include "memory.h" | |
4a1ab8e4 | 27 | #include "zebra_memory.h" |
718e3744 | 28 | #include "sockopt.h" |
29 | #include "thread.h" | |
30 | #include "if.h" | |
4a04e5f7 | 31 | #include "stream.h" |
718e3744 | 32 | #include "log.h" |
33 | #include "prefix.h" | |
34 | #include "linklist.h" | |
35 | #include "command.h" | |
edd7c245 | 36 | #include "privs.h" |
cd80d74f | 37 | #include "vrf.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 | ||
ac4d0be5 | 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 | ||
ac4d0be5 | 66 | enum rtadv_event { |
67 | RTADV_START, | |
68 | RTADV_STOP, | |
69 | RTADV_TIMER, | |
70 | RTADV_TIMER_MSEC, | |
71 | RTADV_READ | |
72 | }; | |
718e3744 | 73 | |
ac4d0be5 | 74 | static void rtadv_event(struct zebra_ns *, enum rtadv_event, int); |
718e3744 | 75 | |
ac4d0be5 | 76 | static int if_join_all_router(int, struct interface *); |
77 | static int if_leave_all_router(int, struct interface *); | |
6b0655a2 | 78 | |
ac4d0be5 | 79 | static int rtadv_increment_received(struct zebra_ns *zns, ifindex_t *ifindex) |
911ad1e2 | 80 | { |
ac4d0be5 | 81 | int ret = -1; |
82 | struct interface *iface; | |
83 | struct zebra_if *zif; | |
84 | ||
85 | iface = if_lookup_by_index_per_ns(zns, *ifindex); | |
86 | if (iface && iface->info) { | |
87 | zif = iface->info; | |
88 | zif->ra_rcvd++; | |
89 | ret = 0; | |
90 | } | |
91 | return ret; | |
795b5abf QY |
92 | } |
93 | ||
ac4d0be5 | 94 | static int rtadv_recv_packet(struct zebra_ns *zns, int sock, u_char *buf, |
95 | int buflen, struct sockaddr_in6 *from, | |
96 | ifindex_t *ifindex, int *hoplimit) | |
718e3744 | 97 | { |
ac4d0be5 | 98 | int ret; |
99 | struct msghdr msg; | |
100 | struct iovec iov; | |
101 | struct cmsghdr *cmsgptr; | |
102 | struct in6_addr dst; | |
103 | ||
104 | char adata[1024]; | |
105 | ||
106 | /* Fill in message and iovec. */ | |
107 | msg.msg_name = (void *)from; | |
108 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
109 | msg.msg_iov = &iov; | |
110 | msg.msg_iovlen = 1; | |
111 | msg.msg_control = (void *)adata; | |
112 | msg.msg_controllen = sizeof adata; | |
113 | iov.iov_base = buf; | |
114 | iov.iov_len = buflen; | |
115 | ||
116 | /* If recvmsg fail return minus value. */ | |
117 | ret = recvmsg(sock, &msg, 0); | |
118 | if (ret < 0) | |
119 | return ret; | |
120 | ||
121 | for (cmsgptr = ZCMSG_FIRSTHDR(&msg); cmsgptr != NULL; | |
122 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) { | |
123 | /* I want interface index which this packet comes from. */ | |
124 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
125 | && cmsgptr->cmsg_type == IPV6_PKTINFO) { | |
126 | struct in6_pktinfo *ptr; | |
127 | ||
128 | ptr = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
129 | *ifindex = ptr->ipi6_ifindex; | |
130 | memcpy(&dst, &ptr->ipi6_addr, sizeof(ptr->ipi6_addr)); | |
131 | } | |
132 | ||
133 | /* Incoming packet's hop limit. */ | |
134 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
135 | && cmsgptr->cmsg_type == IPV6_HOPLIMIT) { | |
136 | int *hoptr = (int *)CMSG_DATA(cmsgptr); | |
137 | *hoplimit = *hoptr; | |
138 | } | |
b0b709ab | 139 | } |
795b5abf | 140 | |
ac4d0be5 | 141 | rtadv_increment_received(zns, ifindex); |
142 | return ret; | |
718e3744 | 143 | } |
144 | ||
145 | #define RTADV_MSG_SIZE 4096 | |
146 | ||
147 | /* Send router advertisement packet. */ | |
ac4d0be5 | 148 | static void rtadv_send_packet(int sock, struct interface *ifp) |
718e3744 | 149 | { |
ac4d0be5 | 150 | struct msghdr msg; |
151 | struct iovec iov; | |
152 | struct cmsghdr *cmsgptr; | |
153 | struct in6_pktinfo *pkt; | |
154 | struct sockaddr_in6 addr; | |
155 | static void *adata = NULL; | |
156 | unsigned char buf[RTADV_MSG_SIZE]; | |
157 | struct nd_router_advert *rtadv; | |
158 | int ret; | |
159 | int len = 0; | |
160 | struct zebra_if *zif; | |
161 | struct rtadv_prefix *rprefix; | |
162 | u_char all_nodes_addr[] = {0xff, 0x02, 0, 0, 0, 0, 0, 0, | |
163 | 0, 0, 0, 0, 0, 0, 0, 1}; | |
164 | struct listnode *node; | |
165 | u_int16_t pkt_RouterLifetime; | |
166 | ||
167 | /* | |
168 | * Allocate control message bufffer. This is dynamic because | |
169 | * CMSG_SPACE is not guaranteed not to call a function. Note that | |
170 | * the size will be different on different architectures due to | |
171 | * differing alignment rules. | |
172 | */ | |
173 | if (adata == NULL) { | |
174 | /* XXX Free on shutdown. */ | |
175 | adata = malloc(CMSG_SPACE(sizeof(struct in6_pktinfo))); | |
176 | ||
177 | if (adata == NULL) | |
178 | zlog_err( | |
179 | "rtadv_send_packet: can't malloc control data"); | |
180 | } | |
181 | ||
182 | /* Logging of packet. */ | |
183 | if (IS_ZEBRA_DEBUG_PACKET) | |
184 | zlog_debug("%s(%u): Tx RA, socket %u", ifp->name, ifp->ifindex, | |
185 | sock); | |
186 | ||
187 | /* Fill in sockaddr_in6. */ | |
188 | memset(&addr, 0, sizeof(struct sockaddr_in6)); | |
189 | addr.sin6_family = AF_INET6; | |
718e3744 | 190 | #ifdef SIN6_LEN |
ac4d0be5 | 191 | addr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 192 | #endif /* SIN6_LEN */ |
ac4d0be5 | 193 | addr.sin6_port = htons(IPPROTO_ICMPV6); |
194 | IPV6_ADDR_COPY(&addr.sin6_addr, all_nodes_addr); | |
195 | ||
196 | /* Fetch interface information. */ | |
197 | zif = ifp->info; | |
198 | ||
199 | /* Make router advertisement message. */ | |
200 | rtadv = (struct nd_router_advert *)buf; | |
201 | ||
202 | rtadv->nd_ra_type = ND_ROUTER_ADVERT; | |
203 | rtadv->nd_ra_code = 0; | |
204 | rtadv->nd_ra_cksum = 0; | |
205 | ||
206 | rtadv->nd_ra_curhoplimit = 64; | |
207 | ||
208 | /* RFC4191: Default Router Preference is 0 if Router Lifetime is 0. */ | |
209 | rtadv->nd_ra_flags_reserved = zif->rtadv.AdvDefaultLifetime == 0 | |
210 | ? 0 | |
211 | : zif->rtadv.DefaultPreference; | |
212 | rtadv->nd_ra_flags_reserved <<= 3; | |
213 | ||
214 | if (zif->rtadv.AdvManagedFlag) | |
215 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_MANAGED; | |
216 | if (zif->rtadv.AdvOtherConfigFlag) | |
217 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_OTHER; | |
218 | if (zif->rtadv.AdvHomeAgentFlag) | |
219 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_HOME_AGENT; | |
220 | /* Note that according to Neighbor Discovery (RFC 4861 [18]), | |
221 | * AdvDefaultLifetime is by default based on the value of | |
222 | * MaxRtrAdvInterval. AdvDefaultLifetime is used in the Router Lifetime | |
223 | * field of Router Advertisements. Given that this field is expressed | |
224 | * in seconds, a small MaxRtrAdvInterval value can result in a zero | |
225 | * value for this field. To prevent this, routers SHOULD keep | |
226 | * AdvDefaultLifetime in at least one second, even if the use of | |
227 | * MaxRtrAdvInterval would result in a smaller value. -- RFC6275, 7.5 */ | |
228 | pkt_RouterLifetime = | |
229 | zif->rtadv.AdvDefaultLifetime != -1 | |
230 | ? zif->rtadv.AdvDefaultLifetime | |
231 | : MAX(1, 0.003 * zif->rtadv.MaxRtrAdvInterval); | |
232 | rtadv->nd_ra_router_lifetime = htons(pkt_RouterLifetime); | |
233 | rtadv->nd_ra_reachable = htonl(zif->rtadv.AdvReachableTime); | |
234 | rtadv->nd_ra_retransmit = htonl(0); | |
235 | ||
236 | len = sizeof(struct nd_router_advert); | |
237 | ||
238 | /* If both the Home Agent Preference and Home Agent Lifetime are set to | |
239 | * their default values specified above, this option SHOULD NOT be | |
240 | * included in the Router Advertisement messages sent by this home | |
241 | * agent. -- RFC6275, 7.4 */ | |
242 | if (zif->rtadv.AdvHomeAgentFlag | |
243 | && (zif->rtadv.HomeAgentPreference | |
244 | || zif->rtadv.HomeAgentLifetime != -1)) { | |
245 | struct nd_opt_homeagent_info *ndopt_hai = | |
246 | (struct nd_opt_homeagent_info *)(buf + len); | |
247 | ndopt_hai->nd_opt_hai_type = ND_OPT_HA_INFORMATION; | |
248 | ndopt_hai->nd_opt_hai_len = 1; | |
249 | ndopt_hai->nd_opt_hai_reserved = 0; | |
250 | ndopt_hai->nd_opt_hai_preference = | |
251 | htons(zif->rtadv.HomeAgentPreference); | |
252 | /* 16-bit unsigned integer. The lifetime associated with the | |
253 | * home | |
254 | * agent in units of seconds. The default value is the same as | |
255 | * the | |
256 | * Router Lifetime, as specified in the main body of the Router | |
257 | * Advertisement. The maximum value corresponds to 18.2 hours. | |
258 | * A | |
259 | * value of 0 MUST NOT be used. -- RFC6275, 7.5 */ | |
260 | ndopt_hai->nd_opt_hai_lifetime = | |
261 | htons(zif->rtadv.HomeAgentLifetime != -1 | |
262 | ? zif->rtadv.HomeAgentLifetime | |
263 | : MAX(1, pkt_RouterLifetime) /* 0 is OK | |
264 | for RL, | |
265 | but not | |
266 | for HAL*/ | |
267 | ); | |
268 | len += sizeof(struct nd_opt_homeagent_info); | |
269 | } | |
718e3744 | 270 | |
ac4d0be5 | 271 | if (zif->rtadv.AdvIntervalOption) { |
272 | struct nd_opt_adv_interval *ndopt_adv = | |
273 | (struct nd_opt_adv_interval *)(buf + len); | |
274 | ndopt_adv->nd_opt_ai_type = ND_OPT_ADV_INTERVAL; | |
275 | ndopt_adv->nd_opt_ai_len = 1; | |
276 | ndopt_adv->nd_opt_ai_reserved = 0; | |
277 | ndopt_adv->nd_opt_ai_interval = | |
278 | htonl(zif->rtadv.MaxRtrAdvInterval); | |
279 | len += sizeof(struct nd_opt_adv_interval); | |
280 | } | |
281 | ||
282 | /* Fill in prefix. */ | |
283 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
284 | struct nd_opt_prefix_info *pinfo; | |
718e3744 | 285 | |
ac4d0be5 | 286 | pinfo = (struct nd_opt_prefix_info *)(buf + len); |
718e3744 | 287 | |
ac4d0be5 | 288 | pinfo->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION; |
289 | pinfo->nd_opt_pi_len = 4; | |
290 | pinfo->nd_opt_pi_prefix_len = rprefix->prefix.prefixlen; | |
291 | ||
292 | pinfo->nd_opt_pi_flags_reserved = 0; | |
293 | if (rprefix->AdvOnLinkFlag) | |
294 | pinfo->nd_opt_pi_flags_reserved |= | |
295 | ND_OPT_PI_FLAG_ONLINK; | |
296 | if (rprefix->AdvAutonomousFlag) | |
297 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_AUTO; | |
298 | if (rprefix->AdvRouterAddressFlag) | |
299 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_RADDR; | |
300 | ||
301 | pinfo->nd_opt_pi_valid_time = htonl(rprefix->AdvValidLifetime); | |
302 | pinfo->nd_opt_pi_preferred_time = | |
303 | htonl(rprefix->AdvPreferredLifetime); | |
304 | pinfo->nd_opt_pi_reserved2 = 0; | |
305 | ||
306 | IPV6_ADDR_COPY(&pinfo->nd_opt_pi_prefix, | |
307 | &rprefix->prefix.prefix); | |
308 | ||
309 | #ifdef DEBUG | |
310 | { | |
311 | u_char buf[INET6_ADDRSTRLEN]; | |
312 | ||
313 | zlog_debug("DEBUG %s", | |
314 | inet_ntop(AF_INET6, &pinfo->nd_opt_pi_prefix, | |
315 | buf, INET6_ADDRSTRLEN)); | |
316 | } | |
718e3744 | 317 | #endif /* DEBUG */ |
318 | ||
ac4d0be5 | 319 | len += sizeof(struct nd_opt_prefix_info); |
320 | } | |
321 | ||
322 | /* Hardware address. */ | |
323 | if (ifp->hw_addr_len != 0) { | |
324 | buf[len++] = ND_OPT_SOURCE_LINKADDR; | |
325 | ||
326 | /* Option length should be rounded up to next octet if | |
327 | the link address does not end on an octet boundary. */ | |
328 | buf[len++] = (ifp->hw_addr_len + 9) >> 3; | |
329 | ||
330 | memcpy(buf + len, ifp->hw_addr, ifp->hw_addr_len); | |
331 | len += ifp->hw_addr_len; | |
332 | ||
333 | /* Pad option to end on an octet boundary. */ | |
334 | memset(buf + len, 0, -(ifp->hw_addr_len + 2) & 0x7); | |
335 | len += -(ifp->hw_addr_len + 2) & 0x7; | |
336 | } | |
337 | ||
338 | /* MTU */ | |
339 | if (zif->rtadv.AdvLinkMTU) { | |
340 | struct nd_opt_mtu *opt = (struct nd_opt_mtu *)(buf + len); | |
341 | opt->nd_opt_mtu_type = ND_OPT_MTU; | |
342 | opt->nd_opt_mtu_len = 1; | |
343 | opt->nd_opt_mtu_reserved = 0; | |
344 | opt->nd_opt_mtu_mtu = htonl(zif->rtadv.AdvLinkMTU); | |
345 | len += sizeof(struct nd_opt_mtu); | |
346 | } | |
347 | ||
348 | msg.msg_name = (void *)&addr; | |
349 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
350 | msg.msg_iov = &iov; | |
351 | msg.msg_iovlen = 1; | |
352 | msg.msg_control = (void *)adata; | |
353 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
354 | msg.msg_flags = 0; | |
355 | iov.iov_base = buf; | |
356 | iov.iov_len = len; | |
357 | ||
358 | cmsgptr = ZCMSG_FIRSTHDR(&msg); | |
359 | cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
360 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
361 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
362 | ||
363 | pkt = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
364 | memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); | |
365 | pkt->ipi6_ifindex = ifp->ifindex; | |
366 | ||
367 | ret = sendmsg(sock, &msg, 0); | |
368 | if (ret < 0) { | |
369 | zlog_err("%s(%u): Tx RA failed, socket %u error %d (%s)", | |
370 | ifp->name, ifp->ifindex, sock, errno, | |
371 | safe_strerror(errno)); | |
372 | } else | |
373 | zif->ra_sent++; | |
718e3744 | 374 | } |
375 | ||
ac4d0be5 | 376 | static int rtadv_timer(struct thread *thread) |
718e3744 | 377 | { |
ac4d0be5 | 378 | struct zebra_ns *zns = THREAD_ARG(thread); |
379 | struct vrf *vrf; | |
380 | struct listnode *node, *nnode; | |
381 | struct interface *ifp; | |
382 | struct zebra_if *zif; | |
383 | int period; | |
384 | ||
385 | zns->rtadv.ra_timer = NULL; | |
386 | if (zns->rtadv.adv_msec_if_count == 0) { | |
387 | period = 1000; /* 1 s */ | |
388 | rtadv_event(zns, RTADV_TIMER, 1 /* 1 s */); | |
389 | } else { | |
390 | period = 10; /* 10 ms */ | |
391 | rtadv_event(zns, RTADV_TIMER_MSEC, 10 /* 10 ms */); | |
392 | } | |
393 | ||
394 | RB_FOREACH(vrf, vrf_id_head, &vrfs_by_id) | |
395 | for (ALL_LIST_ELEMENTS(vrf->iflist, node, nnode, ifp)) { | |
396 | if (if_is_loopback(ifp) | |
397 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK) | |
398 | || !if_is_operative(ifp)) | |
399 | continue; | |
400 | ||
401 | zif = ifp->info; | |
402 | ||
403 | if (zif->rtadv.AdvSendAdvertisements) { | |
404 | if (zif->rtadv.inFastRexmit) { | |
405 | /* We assume we fast rexmit every sec so no | |
406 | * additional vars */ | |
407 | if (--zif->rtadv.NumFastReXmitsRemain <= 0) | |
408 | zif->rtadv.inFastRexmit = 0; | |
409 | ||
410 | if (IS_ZEBRA_DEBUG_SEND) | |
411 | zlog_debug( | |
412 | "Fast RA Rexmit on interface %s", | |
413 | ifp->name); | |
414 | ||
415 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
416 | } else { | |
417 | zif->rtadv.AdvIntervalTimer -= period; | |
418 | if (zif->rtadv.AdvIntervalTimer <= 0) { | |
419 | /* FIXME: using MaxRtrAdvInterval each | |
420 | time isn't what section | |
421 | 6.2.4 of RFC4861 tells to do. */ | |
422 | zif->rtadv.AdvIntervalTimer = | |
423 | zif->rtadv.MaxRtrAdvInterval; | |
424 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
425 | } | |
426 | } | |
427 | } | |
428 | } | |
429 | ||
430 | return 0; | |
718e3744 | 431 | } |
432 | ||
ac4d0be5 | 433 | static void rtadv_process_solicit(struct interface *ifp) |
718e3744 | 434 | { |
ac4d0be5 | 435 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); |
436 | struct zebra_ns *zns = zvrf->zns; | |
718e3744 | 437 | |
ac4d0be5 | 438 | assert(zns); |
439 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
718e3744 | 440 | } |
441 | ||
ac4d0be5 | 442 | static void rtadv_process_advert(u_char *msg, unsigned int len, |
443 | struct interface *ifp, | |
444 | struct sockaddr_in6 *addr) | |
718e3744 | 445 | { |
ac4d0be5 | 446 | struct nd_router_advert *radvert; |
447 | char addr_str[INET6_ADDRSTRLEN]; | |
448 | struct zebra_if *zif; | |
449 | struct prefix p; | |
718e3744 | 450 | |
ac4d0be5 | 451 | zif = ifp->info; |
a80beece | 452 | |
ac4d0be5 | 453 | inet_ntop(AF_INET6, &addr->sin6_addr, addr_str, INET6_ADDRSTRLEN); |
454 | ||
455 | if (len < sizeof(struct nd_router_advert)) { | |
456 | zlog_warn("%s(%u): Rx RA with invalid length %d from %s", | |
457 | ifp->name, ifp->ifindex, len, addr_str); | |
458 | return; | |
459 | } | |
460 | if (!IN6_IS_ADDR_LINKLOCAL(&addr->sin6_addr)) { | |
461 | zlog_warn( | |
462 | "%s(%u): Rx RA with non-linklocal source address from %s", | |
463 | ifp->name, ifp->ifindex, addr_str); | |
464 | return; | |
465 | } | |
466 | ||
467 | radvert = (struct nd_router_advert *)msg; | |
468 | ||
469 | if ((radvert->nd_ra_curhoplimit && zif->rtadv.AdvCurHopLimit) | |
470 | && (radvert->nd_ra_curhoplimit != zif->rtadv.AdvCurHopLimit)) { | |
471 | zlog_warn( | |
472 | "%s(%u): Rx RA - our AdvCurHopLimit doesn't agree with %s", | |
473 | ifp->name, ifp->ifindex, addr_str); | |
474 | } | |
475 | ||
476 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED) | |
477 | && !zif->rtadv.AdvManagedFlag) { | |
478 | zlog_warn( | |
479 | "%s(%u): Rx RA - our AdvManagedFlag doesn't agree with %s", | |
480 | ifp->name, ifp->ifindex, addr_str); | |
481 | } | |
482 | ||
483 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_OTHER) | |
484 | && !zif->rtadv.AdvOtherConfigFlag) { | |
485 | zlog_warn( | |
486 | "%s(%u): Rx RA - our AdvOtherConfigFlag doesn't agree with %s", | |
487 | ifp->name, ifp->ifindex, addr_str); | |
488 | } | |
489 | ||
490 | if ((radvert->nd_ra_reachable && zif->rtadv.AdvReachableTime) | |
491 | && (ntohl(radvert->nd_ra_reachable) | |
492 | != zif->rtadv.AdvReachableTime)) { | |
493 | zlog_warn( | |
494 | "%s(%u): Rx RA - our AdvReachableTime doesn't agree with %s", | |
495 | ifp->name, ifp->ifindex, addr_str); | |
496 | } | |
497 | ||
498 | if ((radvert->nd_ra_retransmit && zif->rtadv.AdvRetransTimer) | |
499 | && (ntohl(radvert->nd_ra_retransmit) | |
500 | != (unsigned int)zif->rtadv.AdvRetransTimer)) { | |
501 | zlog_warn( | |
502 | "%s(%u): Rx RA - our AdvRetransTimer doesn't agree with %s", | |
503 | ifp->name, ifp->ifindex, addr_str); | |
504 | } | |
505 | ||
506 | /* Create entry for neighbor if not known. */ | |
507 | p.family = AF_INET6; | |
508 | IPV6_ADDR_COPY(&p.u.prefix, &addr->sin6_addr); | |
509 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
510 | ||
511 | if (!nbr_connected_check(ifp, &p)) | |
512 | nbr_connected_add_ipv6(ifp, &addr->sin6_addr); | |
718e3744 | 513 | } |
514 | ||
ac4d0be5 | 515 | |
516 | static void rtadv_process_packet(u_char *buf, unsigned int len, | |
517 | ifindex_t ifindex, int hoplimit, | |
518 | struct sockaddr_in6 *from, | |
519 | struct zebra_ns *zns) | |
718e3744 | 520 | { |
ac4d0be5 | 521 | struct icmp6_hdr *icmph; |
522 | struct interface *ifp; | |
523 | struct zebra_if *zif; | |
524 | char addr_str[INET6_ADDRSTRLEN]; | |
525 | ||
526 | inet_ntop(AF_INET6, &from->sin6_addr, addr_str, INET6_ADDRSTRLEN); | |
527 | ||
528 | /* Interface search. */ | |
529 | ifp = if_lookup_by_index_per_ns(zns, ifindex); | |
530 | if (ifp == NULL) { | |
531 | zlog_warn("RA/RS received on unknown IF %u from %s", ifindex, | |
532 | addr_str); | |
533 | return; | |
534 | } | |
535 | ||
536 | if (IS_ZEBRA_DEBUG_PACKET) | |
537 | zlog_debug("%s(%u): Rx RA/RS len %d from %s", ifp->name, | |
538 | ifp->ifindex, len, addr_str); | |
539 | ||
540 | if (if_is_loopback(ifp) | |
541 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) | |
542 | return; | |
718e3744 | 543 | |
ac4d0be5 | 544 | /* Check interface configuration. */ |
545 | zif = ifp->info; | |
546 | if (!zif->rtadv.AdvSendAdvertisements) | |
547 | return; | |
718e3744 | 548 | |
ac4d0be5 | 549 | /* ICMP message length check. */ |
550 | if (len < sizeof(struct icmp6_hdr)) { | |
551 | zlog_warn("%s(%u): Rx RA with Invalid ICMPV6 packet length %d", | |
552 | ifp->name, ifp->ifindex, len); | |
553 | return; | |
554 | } | |
555 | ||
556 | icmph = (struct icmp6_hdr *)buf; | |
718e3744 | 557 | |
ac4d0be5 | 558 | /* ICMP message type check. */ |
559 | if (icmph->icmp6_type != ND_ROUTER_SOLICIT | |
560 | && icmph->icmp6_type != ND_ROUTER_ADVERT) { | |
561 | zlog_warn("%s(%u): Rx RA - Unwanted ICMPV6 message type %d", | |
562 | ifp->name, ifp->ifindex, icmph->icmp6_type); | |
563 | return; | |
564 | } | |
718e3744 | 565 | |
ac4d0be5 | 566 | /* Hoplimit check. */ |
567 | if (hoplimit >= 0 && hoplimit != 255) { | |
568 | zlog_warn("%s(%u): Rx RA - Invalid hoplimit %d", ifp->name, | |
569 | ifp->ifindex, hoplimit); | |
570 | return; | |
571 | } | |
718e3744 | 572 | |
ac4d0be5 | 573 | /* Check ICMP message type. */ |
574 | if (icmph->icmp6_type == ND_ROUTER_SOLICIT) | |
575 | rtadv_process_solicit(ifp); | |
576 | else if (icmph->icmp6_type == ND_ROUTER_ADVERT) | |
577 | rtadv_process_advert(buf, len, ifp, from); | |
718e3744 | 578 | |
ac4d0be5 | 579 | return; |
718e3744 | 580 | } |
581 | ||
ac4d0be5 | 582 | static int rtadv_read(struct thread *thread) |
718e3744 | 583 | { |
ac4d0be5 | 584 | int sock; |
585 | int len; | |
586 | u_char buf[RTADV_MSG_SIZE]; | |
587 | struct sockaddr_in6 from; | |
588 | ifindex_t ifindex = 0; | |
589 | int hoplimit = -1; | |
590 | struct zebra_ns *zns = THREAD_ARG(thread); | |
591 | ||
592 | sock = THREAD_FD(thread); | |
593 | zns->rtadv.ra_read = NULL; | |
594 | ||
595 | /* Register myself. */ | |
596 | rtadv_event(zns, RTADV_READ, sock); | |
597 | ||
598 | len = rtadv_recv_packet(zns, sock, buf, sizeof(buf), &from, &ifindex, | |
599 | &hoplimit); | |
600 | ||
601 | if (len < 0) { | |
602 | zlog_warn("RA/RS recv failed, socket %u error %s", sock, | |
603 | safe_strerror(errno)); | |
604 | return len; | |
605 | } | |
606 | ||
607 | rtadv_process_packet(buf, (unsigned)len, ifindex, hoplimit, &from, zns); | |
608 | ||
609 | return 0; | |
718e3744 | 610 | } |
6b0655a2 | 611 | |
ac4d0be5 | 612 | static int rtadv_make_socket(void) |
718e3744 | 613 | { |
ac4d0be5 | 614 | int sock; |
615 | int ret = 0; | |
616 | struct icmp6_filter filter; | |
617 | ||
618 | if (zserv_privs.change(ZPRIVS_RAISE)) | |
619 | zlog_err("rtadv_make_socket: could not raise privs, %s", | |
620 | safe_strerror(errno)); | |
621 | ||
622 | sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); | |
623 | ||
624 | if (zserv_privs.change(ZPRIVS_LOWER)) | |
625 | zlog_err("rtadv_make_socket: could not lower privs, %s", | |
626 | safe_strerror(errno)); | |
627 | ||
628 | if (sock < 0) { | |
629 | close(sock); | |
630 | return -1; | |
631 | } | |
632 | ||
633 | ret = setsockopt_ipv6_pktinfo(sock, 1); | |
634 | if (ret < 0) { | |
635 | close(sock); | |
636 | return ret; | |
637 | } | |
638 | ret = setsockopt_ipv6_multicast_loop(sock, 0); | |
639 | if (ret < 0) { | |
640 | close(sock); | |
641 | return ret; | |
642 | } | |
643 | ret = setsockopt_ipv6_unicast_hops(sock, 255); | |
644 | if (ret < 0) { | |
645 | close(sock); | |
646 | return ret; | |
647 | } | |
648 | ret = setsockopt_ipv6_multicast_hops(sock, 255); | |
649 | if (ret < 0) { | |
650 | close(sock); | |
651 | return ret; | |
652 | } | |
653 | ret = setsockopt_ipv6_hoplimit(sock, 1); | |
654 | if (ret < 0) { | |
655 | close(sock); | |
656 | return ret; | |
657 | } | |
658 | ||
659 | ICMP6_FILTER_SETBLOCKALL(&filter); | |
660 | ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter); | |
661 | ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter); | |
662 | ||
663 | ret = setsockopt(sock, IPPROTO_ICMPV6, ICMP6_FILTER, &filter, | |
664 | sizeof(struct icmp6_filter)); | |
665 | if (ret < 0) { | |
666 | zlog_info("ICMP6_FILTER set fail: %s", safe_strerror(errno)); | |
667 | return ret; | |
668 | } | |
669 | ||
670 | return sock; | |
718e3744 | 671 | } |
672 | ||
ac4d0be5 | 673 | static struct rtadv_prefix *rtadv_prefix_new(void) |
718e3744 | 674 | { |
ac4d0be5 | 675 | return XCALLOC(MTYPE_RTADV_PREFIX, sizeof(struct rtadv_prefix)); |
718e3744 | 676 | } |
677 | ||
ac4d0be5 | 678 | static void rtadv_prefix_free(struct rtadv_prefix *rtadv_prefix) |
718e3744 | 679 | { |
ac4d0be5 | 680 | XFREE(MTYPE_RTADV_PREFIX, rtadv_prefix); |
681 | } | |
718e3744 | 682 | |
ac4d0be5 | 683 | static struct rtadv_prefix *rtadv_prefix_lookup(struct list *rplist, |
684 | struct prefix_ipv6 *p) | |
685 | { | |
686 | struct listnode *node; | |
687 | struct rtadv_prefix *rprefix; | |
688 | ||
689 | for (ALL_LIST_ELEMENTS_RO(rplist, node, rprefix)) | |
690 | if (prefix_same((struct prefix *)&rprefix->prefix, | |
691 | (struct prefix *)p)) | |
692 | return rprefix; | |
693 | return NULL; | |
718e3744 | 694 | } |
695 | ||
ac4d0be5 | 696 | static struct rtadv_prefix *rtadv_prefix_get(struct list *rplist, |
697 | struct prefix_ipv6 *p) | |
718e3744 | 698 | { |
ac4d0be5 | 699 | struct rtadv_prefix *rprefix; |
700 | ||
701 | rprefix = rtadv_prefix_lookup(rplist, p); | |
702 | if (rprefix) | |
703 | return rprefix; | |
718e3744 | 704 | |
ac4d0be5 | 705 | rprefix = rtadv_prefix_new(); |
706 | memcpy(&rprefix->prefix, p, sizeof(struct prefix_ipv6)); | |
707 | listnode_add(rplist, rprefix); | |
718e3744 | 708 | |
ac4d0be5 | 709 | return rprefix; |
718e3744 | 710 | } |
711 | ||
ac4d0be5 | 712 | static void rtadv_prefix_set(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 713 | { |
ac4d0be5 | 714 | struct rtadv_prefix *rprefix; |
715 | ||
716 | rprefix = rtadv_prefix_get(zif->rtadv.AdvPrefixList, &rp->prefix); | |
717 | ||
718 | /* Set parameters. */ | |
719 | rprefix->AdvValidLifetime = rp->AdvValidLifetime; | |
720 | rprefix->AdvPreferredLifetime = rp->AdvPreferredLifetime; | |
721 | rprefix->AdvOnLinkFlag = rp->AdvOnLinkFlag; | |
722 | rprefix->AdvAutonomousFlag = rp->AdvAutonomousFlag; | |
723 | rprefix->AdvRouterAddressFlag = rp->AdvRouterAddressFlag; | |
718e3744 | 724 | } |
725 | ||
ac4d0be5 | 726 | static int rtadv_prefix_reset(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 727 | { |
ac4d0be5 | 728 | struct rtadv_prefix *rprefix; |
729 | ||
730 | rprefix = rtadv_prefix_lookup(zif->rtadv.AdvPrefixList, &rp->prefix); | |
731 | if (rprefix != NULL) { | |
732 | listnode_delete(zif->rtadv.AdvPrefixList, (void *)rprefix); | |
733 | rtadv_prefix_free(rprefix); | |
734 | return 1; | |
735 | } else | |
736 | return 0; | |
718e3744 | 737 | } |
738 | ||
ac4d0be5 | 739 | static void ipv6_nd_suppress_ra_set(struct interface *ifp, |
740 | ipv6_nd_suppress_ra_status status) | |
b6120505 | 741 | { |
ac4d0be5 | 742 | struct zebra_if *zif; |
743 | struct zebra_vrf *zvrf; | |
744 | struct zebra_ns *zns; | |
745 | ||
746 | zif = ifp->info; | |
747 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
748 | zns = zvrf->zns; | |
749 | ||
750 | if (status == RA_SUPPRESS) { | |
751 | /* RA is currently enabled */ | |
752 | if (zif->rtadv.AdvSendAdvertisements) { | |
753 | zif->rtadv.AdvSendAdvertisements = 0; | |
754 | zif->rtadv.AdvIntervalTimer = 0; | |
755 | zns->rtadv.adv_if_count--; | |
756 | ||
757 | if_leave_all_router(zns->rtadv.sock, ifp); | |
758 | ||
759 | if (zns->rtadv.adv_if_count == 0) | |
760 | rtadv_event(zns, RTADV_STOP, 0); | |
761 | } | |
762 | } else { | |
763 | if (!zif->rtadv.AdvSendAdvertisements) { | |
764 | zif->rtadv.AdvSendAdvertisements = 1; | |
765 | zif->rtadv.AdvIntervalTimer = 0; | |
766 | zns->rtadv.adv_if_count++; | |
767 | ||
768 | if (zif->rtadv.MaxRtrAdvInterval >= 1000) { | |
769 | /* Enable Fast RA only when RA interval is in | |
770 | * secs */ | |
771 | zif->rtadv.inFastRexmit = 1; | |
772 | zif->rtadv.NumFastReXmitsRemain = | |
773 | RTADV_NUM_FAST_REXMITS; | |
774 | } | |
775 | ||
776 | if_join_all_router(zns->rtadv.sock, ifp); | |
777 | ||
778 | if (zns->rtadv.adv_if_count == 1) | |
779 | rtadv_event(zns, RTADV_START, zns->rtadv.sock); | |
780 | } | |
781 | } | |
b6120505 DW |
782 | } |
783 | ||
4a04e5f7 | 784 | /* |
785 | * Handle client (BGP) message to enable or disable IPv6 RA on an interface. | |
786 | * Note that while the client could request RA on an interface on which the | |
787 | * operator has not enabled RA, RA won't be disabled upon client request | |
5c81b96a | 788 | * if the operator has explicitly enabled RA. The enable request can also |
789 | * specify a RA interval (in seconds). | |
4a04e5f7 | 790 | */ |
ac4d0be5 | 791 | void zebra_interface_radv_set(struct zserv *client, int sock, u_short length, |
792 | struct zebra_vrf *zvrf, int enable) | |
4a04e5f7 | 793 | { |
ac4d0be5 | 794 | struct stream *s; |
795 | unsigned int ifindex; | |
796 | struct interface *ifp; | |
797 | struct zebra_if *zif; | |
798 | int ra_interval; | |
799 | ||
800 | s = client->ibuf; | |
801 | ||
802 | /* Get interface index and RA interval. */ | |
803 | ifindex = stream_getl(s); | |
804 | ra_interval = stream_getl(s); | |
805 | ||
806 | if (IS_ZEBRA_DEBUG_EVENT) | |
807 | zlog_debug("%u: IF %u RA %s from client %s, interval %ds", | |
808 | zvrf_id(zvrf), ifindex, | |
809 | enable ? "enable" : "disable", | |
810 | zebra_route_string(client->proto), ra_interval); | |
811 | ||
812 | /* Locate interface and check VRF match. */ | |
813 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex); | |
814 | if (!ifp) { | |
815 | zlog_warn("%u: IF %u RA %s client %s - interface unknown", | |
816 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", | |
817 | zebra_route_string(client->proto)); | |
818 | return; | |
819 | } | |
820 | if (ifp->vrf_id != zvrf_id(zvrf)) { | |
821 | zlog_warn("%u: IF %u RA %s client %s - VRF mismatch, IF VRF %u", | |
822 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", | |
823 | zebra_route_string(client->proto), ifp->vrf_id); | |
824 | return; | |
825 | } | |
826 | ||
827 | zif = ifp->info; | |
828 | if (enable) { | |
829 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); | |
830 | if (ra_interval | |
831 | && (ra_interval * 1000) < zif->rtadv.MaxRtrAdvInterval) | |
832 | zif->rtadv.MaxRtrAdvInterval = ra_interval * 1000; | |
833 | } else { | |
834 | if (!zif->rtadv.configured) { | |
835 | zif->rtadv.MaxRtrAdvInterval = | |
836 | RTADV_MAX_RTR_ADV_INTERVAL; | |
837 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); | |
838 | } | |
839 | } | |
4a04e5f7 | 840 | } |
841 | ||
718e3744 | 842 | DEFUN (ipv6_nd_suppress_ra, |
843 | ipv6_nd_suppress_ra_cmd, | |
844 | "ipv6 nd suppress-ra", | |
3e31cded | 845 | "Interface IPv6 config commands\n" |
718e3744 | 846 | "Neighbor discovery\n" |
847 | "Suppress Router Advertisement\n") | |
848 | { | |
ac4d0be5 | 849 | VTY_DECLVAR_CONTEXT(interface, ifp); |
850 | struct zebra_if *zif = ifp->info; | |
851 | ||
852 | if (if_is_loopback(ifp) | |
853 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
854 | vty_out(vty, | |
855 | "Cannot configure IPv6 Router Advertisements on this interface%s", | |
856 | VTY_NEWLINE); | |
857 | return CMD_WARNING; | |
858 | } | |
859 | ||
860 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); | |
861 | zif->rtadv.configured = 0; | |
862 | return CMD_SUCCESS; | |
718e3744 | 863 | } |
864 | ||
718e3744 | 865 | DEFUN (no_ipv6_nd_suppress_ra, |
866 | no_ipv6_nd_suppress_ra_cmd, | |
867 | "no ipv6 nd suppress-ra", | |
868 | NO_STR | |
3e31cded | 869 | "Interface IPv6 config commands\n" |
718e3744 | 870 | "Neighbor discovery\n" |
871 | "Suppress Router Advertisement\n") | |
872 | { | |
ac4d0be5 | 873 | VTY_DECLVAR_CONTEXT(interface, ifp); |
874 | struct zebra_if *zif = ifp->info; | |
875 | ||
876 | if (if_is_loopback(ifp) | |
877 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
878 | vty_out(vty, | |
879 | "Cannot configure IPv6 Router Advertisements on this interface%s", | |
880 | VTY_NEWLINE); | |
881 | return CMD_WARNING; | |
882 | } | |
883 | ||
884 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); | |
885 | zif->rtadv.configured = 1; | |
886 | return CMD_SUCCESS; | |
718e3744 | 887 | } |
888 | ||
7cee1bb1 | 889 | DEFUN (ipv6_nd_ra_interval_msec, |
890 | ipv6_nd_ra_interval_msec_cmd, | |
6147e2c6 | 891 | "ipv6 nd ra-interval msec (70-1800000)", |
7cee1bb1 | 892 | "Interface IPv6 config commands\n" |
893 | "Neighbor discovery\n" | |
894 | "Router Advertisement interval\n" | |
3a2d747c | 895 | "Router Advertisement interval in milliseconds\n" |
7cee1bb1 | 896 | "Router Advertisement interval in milliseconds\n") |
897 | { | |
ac4d0be5 | 898 | int idx_number = 4; |
899 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
900 | unsigned interval; | |
901 | struct zebra_if *zif = ifp->info; | |
902 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); | |
903 | struct zebra_ns *zns; | |
904 | ||
905 | zns = zvrf->zns; | |
906 | VTY_GET_INTEGER_RANGE("router advertisement interval", interval, | |
907 | argv[idx_number]->arg, 70, 1800000); | |
908 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
909 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime * 1000)) { | |
910 | vty_out(vty, | |
911 | "This ra-interval would conflict with configured ra-lifetime!%s", | |
912 | VTY_NEWLINE); | |
913 | return CMD_WARNING; | |
914 | } | |
915 | ||
916 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
917 | zns->rtadv.adv_msec_if_count--; | |
918 | ||
919 | if (interval % 1000) | |
920 | zns->rtadv.adv_msec_if_count++; | |
921 | ||
922 | zif->rtadv.MaxRtrAdvInterval = interval; | |
923 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
924 | zif->rtadv.AdvIntervalTimer = 0; | |
925 | ||
926 | return CMD_SUCCESS; | |
7cee1bb1 | 927 | } |
928 | ||
718e3744 | 929 | DEFUN (ipv6_nd_ra_interval, |
930 | ipv6_nd_ra_interval_cmd, | |
6147e2c6 | 931 | "ipv6 nd ra-interval (1-1800)", |
3e31cded | 932 | "Interface IPv6 config commands\n" |
718e3744 | 933 | "Neighbor discovery\n" |
934 | "Router Advertisement interval\n" | |
935 | "Router Advertisement interval in seconds\n") | |
936 | { | |
ac4d0be5 | 937 | int idx_number = 3; |
938 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
939 | unsigned interval; | |
940 | struct zebra_if *zif = ifp->info; | |
941 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); | |
942 | struct zebra_ns *zns; | |
943 | ||
944 | zns = zvrf->zns; | |
945 | VTY_GET_INTEGER_RANGE("router advertisement interval", interval, | |
946 | argv[idx_number]->arg, 1, 1800); | |
947 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
948 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime)) { | |
949 | vty_out(vty, | |
950 | "This ra-interval would conflict with configured ra-lifetime!%s", | |
951 | VTY_NEWLINE); | |
952 | return CMD_WARNING; | |
953 | } | |
954 | ||
955 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
956 | zns->rtadv.adv_msec_if_count--; | |
957 | ||
958 | /* convert to milliseconds */ | |
959 | interval = interval * 1000; | |
960 | ||
961 | zif->rtadv.MaxRtrAdvInterval = interval; | |
962 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
963 | zif->rtadv.AdvIntervalTimer = 0; | |
964 | ||
965 | return CMD_SUCCESS; | |
718e3744 | 966 | } |
967 | ||
968 | DEFUN (no_ipv6_nd_ra_interval, | |
969 | no_ipv6_nd_ra_interval_cmd, | |
34ccea1e | 970 | "no ipv6 nd ra-interval [<(1-1800)|msec (1-1800000)>]", |
718e3744 | 971 | NO_STR |
3e31cded | 972 | "Interface IPv6 config commands\n" |
718e3744 | 973 | "Neighbor discovery\n" |
34ccea1e QY |
974 | "Router Advertisement interval\n" |
975 | "Router Advertisement interval in seconds\n" | |
976 | "Specify millisecond router advertisement interval\n" | |
977 | "Router Advertisement interval in milliseconds\n") | |
718e3744 | 978 | { |
ac4d0be5 | 979 | VTY_DECLVAR_CONTEXT(interface, ifp); |
980 | struct zebra_if *zif = ifp->info; | |
981 | struct zebra_vrf *zvrf; | |
982 | struct zebra_ns *zns; | |
983 | ||
984 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
985 | zns = zvrf->zns; | |
986 | ||
987 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
988 | zns->rtadv.adv_msec_if_count--; | |
989 | ||
990 | zif->rtadv.MaxRtrAdvInterval = RTADV_MAX_RTR_ADV_INTERVAL; | |
991 | zif->rtadv.MinRtrAdvInterval = RTADV_MIN_RTR_ADV_INTERVAL; | |
992 | zif->rtadv.AdvIntervalTimer = zif->rtadv.MaxRtrAdvInterval; | |
993 | ||
994 | return CMD_SUCCESS; | |
718e3744 | 995 | } |
996 | ||
997 | DEFUN (ipv6_nd_ra_lifetime, | |
998 | ipv6_nd_ra_lifetime_cmd, | |
6147e2c6 | 999 | "ipv6 nd ra-lifetime (0-9000)", |
3e31cded | 1000 | "Interface IPv6 config commands\n" |
718e3744 | 1001 | "Neighbor discovery\n" |
1002 | "Router lifetime\n" | |
4afa50b3 | 1003 | "Router lifetime in seconds (0 stands for a non-default gw)\n") |
718e3744 | 1004 | { |
ac4d0be5 | 1005 | int idx_number = 3; |
1006 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1007 | struct zebra_if *zif = ifp->info; | |
1008 | int lifetime; | |
1009 | ||
1010 | VTY_GET_INTEGER_RANGE("router lifetime", lifetime, | |
1011 | argv[idx_number]->arg, 0, 9000); | |
1012 | ||
1013 | /* The value to be placed in the Router Lifetime field | |
1014 | * of Router Advertisements sent from the interface, | |
1015 | * in seconds. MUST be either zero or between | |
1016 | * MaxRtrAdvInterval and 9000 seconds. -- RFC4861, 6.2.1 */ | |
1017 | if ((lifetime != 0 && lifetime * 1000 < zif->rtadv.MaxRtrAdvInterval)) { | |
1018 | vty_out(vty, | |
1019 | "This ra-lifetime would conflict with configured ra-interval%s", | |
1020 | VTY_NEWLINE); | |
1021 | return CMD_WARNING; | |
1022 | } | |
1023 | ||
1024 | zif->rtadv.AdvDefaultLifetime = lifetime; | |
1025 | ||
1026 | return CMD_SUCCESS; | |
718e3744 | 1027 | } |
1028 | ||
1029 | DEFUN (no_ipv6_nd_ra_lifetime, | |
1030 | no_ipv6_nd_ra_lifetime_cmd, | |
34ccea1e | 1031 | "no ipv6 nd ra-lifetime [(0-9000)]", |
718e3744 | 1032 | NO_STR |
3e31cded | 1033 | "Interface IPv6 config commands\n" |
718e3744 | 1034 | "Neighbor discovery\n" |
34ccea1e QY |
1035 | "Router lifetime\n" |
1036 | "Router lifetime in seconds (0 stands for a non-default gw)\n") | |
718e3744 | 1037 | { |
ac4d0be5 | 1038 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1039 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1040 | |
ac4d0be5 | 1041 | zif->rtadv.AdvDefaultLifetime = -1; |
718e3744 | 1042 | |
ac4d0be5 | 1043 | return CMD_SUCCESS; |
718e3744 | 1044 | } |
1045 | ||
1046 | DEFUN (ipv6_nd_reachable_time, | |
1047 | ipv6_nd_reachable_time_cmd, | |
6147e2c6 | 1048 | "ipv6 nd reachable-time (1-3600000)", |
3e31cded | 1049 | "Interface IPv6 config commands\n" |
718e3744 | 1050 | "Neighbor discovery\n" |
1051 | "Reachable time\n" | |
1052 | "Reachable time in milliseconds\n") | |
1053 | { | |
ac4d0be5 | 1054 | int idx_number = 3; |
1055 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1056 | struct zebra_if *zif = ifp->info; | |
1057 | VTY_GET_INTEGER_RANGE("reachable time", zif->rtadv.AdvReachableTime, | |
1058 | argv[idx_number]->arg, 1, | |
1059 | RTADV_MAX_REACHABLE_TIME); | |
1060 | return CMD_SUCCESS; | |
718e3744 | 1061 | } |
1062 | ||
1063 | DEFUN (no_ipv6_nd_reachable_time, | |
1064 | no_ipv6_nd_reachable_time_cmd, | |
34ccea1e | 1065 | "no ipv6 nd reachable-time [(1-3600000)]", |
718e3744 | 1066 | NO_STR |
3e31cded | 1067 | "Interface IPv6 config commands\n" |
718e3744 | 1068 | "Neighbor discovery\n" |
34ccea1e QY |
1069 | "Reachable time\n" |
1070 | "Reachable time in milliseconds\n") | |
718e3744 | 1071 | { |
ac4d0be5 | 1072 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1073 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1074 | |
ac4d0be5 | 1075 | zif->rtadv.AdvReachableTime = 0; |
718e3744 | 1076 | |
ac4d0be5 | 1077 | return CMD_SUCCESS; |
718e3744 | 1078 | } |
1079 | ||
7cee1bb1 | 1080 | DEFUN (ipv6_nd_homeagent_preference, |
1081 | ipv6_nd_homeagent_preference_cmd, | |
6147e2c6 | 1082 | "ipv6 nd home-agent-preference (0-65535)", |
7cee1bb1 | 1083 | "Interface IPv6 config commands\n" |
1084 | "Neighbor discovery\n" | |
1085 | "Home Agent preference\n" | |
4afa50b3 | 1086 | "preference value (default is 0, least preferred)\n") |
7cee1bb1 | 1087 | { |
ac4d0be5 | 1088 | int idx_number = 3; |
1089 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1090 | struct zebra_if *zif = ifp->info; | |
1091 | VTY_GET_INTEGER_RANGE("home agent preference", | |
1092 | zif->rtadv.HomeAgentPreference, | |
1093 | argv[idx_number]->arg, 0, 65535); | |
1094 | return CMD_SUCCESS; | |
7cee1bb1 | 1095 | } |
1096 | ||
1097 | DEFUN (no_ipv6_nd_homeagent_preference, | |
1098 | no_ipv6_nd_homeagent_preference_cmd, | |
34ccea1e | 1099 | "no ipv6 nd home-agent-preference [(0-65535)]", |
7cee1bb1 | 1100 | NO_STR |
1101 | "Interface IPv6 config commands\n" | |
1102 | "Neighbor discovery\n" | |
34ccea1e QY |
1103 | "Home Agent preference\n" |
1104 | "preference value (default is 0, least preferred)\n") | |
7cee1bb1 | 1105 | { |
ac4d0be5 | 1106 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1107 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1108 | |
ac4d0be5 | 1109 | zif->rtadv.HomeAgentPreference = 0; |
7cee1bb1 | 1110 | |
ac4d0be5 | 1111 | return CMD_SUCCESS; |
7cee1bb1 | 1112 | } |
1113 | ||
1114 | DEFUN (ipv6_nd_homeagent_lifetime, | |
1115 | ipv6_nd_homeagent_lifetime_cmd, | |
6147e2c6 | 1116 | "ipv6 nd home-agent-lifetime (0-65520)", |
7cee1bb1 | 1117 | "Interface IPv6 config commands\n" |
1118 | "Neighbor discovery\n" | |
1119 | "Home Agent lifetime\n" | |
4afa50b3 | 1120 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") |
7cee1bb1 | 1121 | { |
ac4d0be5 | 1122 | int idx_number = 3; |
1123 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1124 | struct zebra_if *zif = ifp->info; | |
1125 | VTY_GET_INTEGER_RANGE("home agent lifetime", | |
1126 | zif->rtadv.HomeAgentLifetime, | |
1127 | argv[idx_number]->arg, 0, RTADV_MAX_HALIFETIME); | |
1128 | return CMD_SUCCESS; | |
7cee1bb1 | 1129 | } |
1130 | ||
1131 | DEFUN (no_ipv6_nd_homeagent_lifetime, | |
1132 | no_ipv6_nd_homeagent_lifetime_cmd, | |
34ccea1e | 1133 | "no ipv6 nd home-agent-lifetime [(0-65520)]", |
7cee1bb1 | 1134 | NO_STR |
1135 | "Interface IPv6 config commands\n" | |
1136 | "Neighbor discovery\n" | |
34ccea1e QY |
1137 | "Home Agent lifetime\n" |
1138 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") | |
7cee1bb1 | 1139 | { |
ac4d0be5 | 1140 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1141 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1142 | |
ac4d0be5 | 1143 | zif->rtadv.HomeAgentLifetime = -1; |
7cee1bb1 | 1144 | |
ac4d0be5 | 1145 | return CMD_SUCCESS; |
7cee1bb1 | 1146 | } |
1147 | ||
718e3744 | 1148 | DEFUN (ipv6_nd_managed_config_flag, |
1149 | ipv6_nd_managed_config_flag_cmd, | |
1150 | "ipv6 nd managed-config-flag", | |
3e31cded | 1151 | "Interface IPv6 config commands\n" |
718e3744 | 1152 | "Neighbor discovery\n" |
1153 | "Managed address configuration flag\n") | |
1154 | { | |
ac4d0be5 | 1155 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1156 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1157 | |
ac4d0be5 | 1158 | zif->rtadv.AdvManagedFlag = 1; |
718e3744 | 1159 | |
ac4d0be5 | 1160 | return CMD_SUCCESS; |
718e3744 | 1161 | } |
1162 | ||
1163 | DEFUN (no_ipv6_nd_managed_config_flag, | |
1164 | no_ipv6_nd_managed_config_flag_cmd, | |
1165 | "no ipv6 nd managed-config-flag", | |
1166 | NO_STR | |
3e31cded | 1167 | "Interface IPv6 config commands\n" |
718e3744 | 1168 | "Neighbor discovery\n" |
1169 | "Managed address configuration flag\n") | |
1170 | { | |
ac4d0be5 | 1171 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1172 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1173 | |
ac4d0be5 | 1174 | zif->rtadv.AdvManagedFlag = 0; |
718e3744 | 1175 | |
ac4d0be5 | 1176 | return CMD_SUCCESS; |
718e3744 | 1177 | } |
1178 | ||
7cee1bb1 | 1179 | DEFUN (ipv6_nd_homeagent_config_flag, |
1180 | ipv6_nd_homeagent_config_flag_cmd, | |
1181 | "ipv6 nd home-agent-config-flag", | |
1182 | "Interface IPv6 config commands\n" | |
1183 | "Neighbor discovery\n" | |
1184 | "Home Agent configuration flag\n") | |
1185 | { | |
ac4d0be5 | 1186 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1187 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1188 | |
ac4d0be5 | 1189 | zif->rtadv.AdvHomeAgentFlag = 1; |
7cee1bb1 | 1190 | |
ac4d0be5 | 1191 | return CMD_SUCCESS; |
7cee1bb1 | 1192 | } |
1193 | ||
1194 | DEFUN (no_ipv6_nd_homeagent_config_flag, | |
1195 | no_ipv6_nd_homeagent_config_flag_cmd, | |
1196 | "no ipv6 nd home-agent-config-flag", | |
1197 | NO_STR | |
1198 | "Interface IPv6 config commands\n" | |
1199 | "Neighbor discovery\n" | |
1200 | "Home Agent configuration flag\n") | |
1201 | { | |
ac4d0be5 | 1202 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1203 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1204 | |
ac4d0be5 | 1205 | zif->rtadv.AdvHomeAgentFlag = 0; |
7cee1bb1 | 1206 | |
ac4d0be5 | 1207 | return CMD_SUCCESS; |
7cee1bb1 | 1208 | } |
1209 | ||
1210 | DEFUN (ipv6_nd_adv_interval_config_option, | |
1211 | ipv6_nd_adv_interval_config_option_cmd, | |
1212 | "ipv6 nd adv-interval-option", | |
1213 | "Interface IPv6 config commands\n" | |
1214 | "Neighbor discovery\n" | |
1215 | "Advertisement Interval Option\n") | |
1216 | { | |
ac4d0be5 | 1217 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1218 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1219 | |
ac4d0be5 | 1220 | zif->rtadv.AdvIntervalOption = 1; |
7cee1bb1 | 1221 | |
ac4d0be5 | 1222 | return CMD_SUCCESS; |
7cee1bb1 | 1223 | } |
1224 | ||
1225 | DEFUN (no_ipv6_nd_adv_interval_config_option, | |
1226 | no_ipv6_nd_adv_interval_config_option_cmd, | |
1227 | "no ipv6 nd adv-interval-option", | |
1228 | NO_STR | |
1229 | "Interface IPv6 config commands\n" | |
1230 | "Neighbor discovery\n" | |
1231 | "Advertisement Interval Option\n") | |
1232 | { | |
ac4d0be5 | 1233 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1234 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1235 | |
ac4d0be5 | 1236 | zif->rtadv.AdvIntervalOption = 0; |
7cee1bb1 | 1237 | |
ac4d0be5 | 1238 | return CMD_SUCCESS; |
7cee1bb1 | 1239 | } |
1240 | ||
718e3744 | 1241 | DEFUN (ipv6_nd_other_config_flag, |
1242 | ipv6_nd_other_config_flag_cmd, | |
1243 | "ipv6 nd other-config-flag", | |
3e31cded | 1244 | "Interface IPv6 config commands\n" |
718e3744 | 1245 | "Neighbor discovery\n" |
1246 | "Other statefull configuration flag\n") | |
1247 | { | |
ac4d0be5 | 1248 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1249 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1250 | |
ac4d0be5 | 1251 | zif->rtadv.AdvOtherConfigFlag = 1; |
718e3744 | 1252 | |
ac4d0be5 | 1253 | return CMD_SUCCESS; |
718e3744 | 1254 | } |
1255 | ||
1256 | DEFUN (no_ipv6_nd_other_config_flag, | |
1257 | no_ipv6_nd_other_config_flag_cmd, | |
1258 | "no ipv6 nd other-config-flag", | |
1259 | NO_STR | |
3e31cded | 1260 | "Interface IPv6 config commands\n" |
718e3744 | 1261 | "Neighbor discovery\n" |
1262 | "Other statefull configuration flag\n") | |
1263 | { | |
ac4d0be5 | 1264 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1265 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1266 | |
ac4d0be5 | 1267 | zif->rtadv.AdvOtherConfigFlag = 0; |
718e3744 | 1268 | |
ac4d0be5 | 1269 | return CMD_SUCCESS; |
718e3744 | 1270 | } |
1271 | ||
3e31cded | 1272 | DEFUN (ipv6_nd_prefix, |
1273 | ipv6_nd_prefix_cmd, | |
34ccea1e | 1274 | "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 | 1275 | "Interface IPv6 config commands\n" |
718e3744 | 1276 | "Neighbor discovery\n" |
1277 | "Prefix information\n" | |
1278 | "IPv6 prefix\n" | |
1279 | "Valid lifetime in seconds\n" | |
3e31cded | 1280 | "Infinite valid lifetime\n" |
718e3744 | 1281 | "Preferred lifetime in seconds\n" |
3e31cded | 1282 | "Infinite preferred lifetime\n" |
34ccea1e | 1283 | "Set Router Address flag\n" |
3e31cded | 1284 | "Do not use prefix for onlink determination\n" |
7cee1bb1 | 1285 | "Do not use prefix for autoconfiguration\n" |
34ccea1e QY |
1286 | "Do not use prefix for autoconfiguration\n" |
1287 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1288 | { |
ac4d0be5 | 1289 | /* prelude */ |
1290 | char *prefix = argv[3]->arg; | |
1291 | int lifetimes = (argc > 4) && (argv[4]->type == RANGE_TKN | |
1292 | || strmatch(argv[4]->text, "infinite")); | |
1293 | int routeropts = lifetimes ? argc > 6 : argc > 4; | |
1294 | ||
1295 | int idx_routeropts = routeropts ? (lifetimes ? 6 : 4) : 0; | |
1296 | ||
1297 | char *lifetime = NULL, *preflifetime = NULL; | |
1298 | int routeraddr = 0, offlink = 0, noautoconf = 0; | |
1299 | if (lifetimes) { | |
1300 | lifetime = argv[4]->type == RANGE_TKN ? argv[4]->arg | |
1301 | : argv[4]->text; | |
1302 | preflifetime = argv[5]->type == RANGE_TKN ? argv[5]->arg | |
1303 | : argv[5]->text; | |
1304 | } | |
1305 | if (routeropts) { | |
1306 | routeraddr = | |
1307 | strmatch(argv[idx_routeropts]->text, "router-address"); | |
1308 | if (!routeraddr) { | |
1309 | offlink = (argc > idx_routeropts + 1 | |
1310 | || strmatch(argv[idx_routeropts]->text, | |
1311 | "off-link")); | |
1312 | noautoconf = (argc > idx_routeropts + 1 | |
1313 | || strmatch(argv[idx_routeropts]->text, | |
1314 | "no-autoconfig")); | |
1315 | } | |
1316 | } | |
1317 | ||
1318 | /* business */ | |
1319 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1320 | struct zebra_if *zebra_if = ifp->info; | |
1321 | int ret; | |
1322 | struct rtadv_prefix rp; | |
1323 | ||
1324 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1325 | if (!ret) { | |
1326 | vty_out(vty, "Malformed IPv6 prefix%s", VTY_NEWLINE); | |
1327 | return CMD_WARNING; | |
1328 | } | |
1329 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1330 | rp.AdvOnLinkFlag = !offlink; | |
1331 | rp.AdvAutonomousFlag = !noautoconf; | |
1332 | rp.AdvRouterAddressFlag = routeraddr; | |
1333 | rp.AdvValidLifetime = RTADV_VALID_LIFETIME; | |
1334 | rp.AdvPreferredLifetime = RTADV_PREFERRED_LIFETIME; | |
1335 | ||
1336 | if (lifetimes) { | |
1337 | rp.AdvValidLifetime = strmatch(lifetime, "infinite") | |
1338 | ? UINT32_MAX | |
1339 | : strtoll(lifetime, NULL, 10); | |
1340 | rp.AdvPreferredLifetime = | |
1341 | strmatch(preflifetime, "infinite") | |
1342 | ? UINT32_MAX | |
1343 | : strtoll(preflifetime, NULL, 10); | |
1344 | if (rp.AdvPreferredLifetime > rp.AdvValidLifetime) { | |
1345 | vty_out(vty, "Invalid preferred lifetime%s", | |
1346 | VTY_NEWLINE); | |
1347 | return CMD_WARNING; | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | rtadv_prefix_set(zebra_if, &rp); | |
1352 | ||
1353 | return CMD_SUCCESS; | |
718e3744 | 1354 | } |
1355 | ||
3e31cded | 1356 | DEFUN (no_ipv6_nd_prefix, |
1357 | no_ipv6_nd_prefix_cmd, | |
34ccea1e QY |
1358 | "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]>]", |
1359 | NO_STR | |
3e31cded | 1360 | "Interface IPv6 config commands\n" |
718e3744 | 1361 | "Neighbor discovery\n" |
1362 | "Prefix information\n" | |
34ccea1e QY |
1363 | "IPv6 prefix\n" |
1364 | "Valid lifetime in seconds\n" | |
1365 | "Infinite valid lifetime\n" | |
1366 | "Preferred lifetime in seconds\n" | |
1367 | "Infinite preferred lifetime\n" | |
1368 | "Set Router Address flag\n" | |
1369 | "Do not use prefix for onlink determination\n" | |
1370 | "Do not use prefix for autoconfiguration\n" | |
1371 | "Do not use prefix for autoconfiguration\n" | |
1372 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1373 | { |
ac4d0be5 | 1374 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1375 | struct zebra_if *zebra_if = ifp->info; | |
1376 | int ret; | |
1377 | struct rtadv_prefix rp; | |
1378 | char *prefix = argv[4]->arg; | |
1379 | ||
1380 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1381 | if (!ret) { | |
1382 | vty_out(vty, "Malformed IPv6 prefix%s", VTY_NEWLINE); | |
1383 | return CMD_WARNING; | |
1384 | } | |
1385 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1386 | ||
1387 | ret = rtadv_prefix_reset(zebra_if, &rp); | |
1388 | if (!ret) { | |
1389 | vty_out(vty, "Non-existant IPv6 prefix%s", VTY_NEWLINE); | |
1390 | return CMD_WARNING; | |
1391 | } | |
1392 | ||
1393 | return CMD_SUCCESS; | |
718e3744 | 1394 | } |
b60668d0 CC |
1395 | |
1396 | DEFUN (ipv6_nd_router_preference, | |
1397 | ipv6_nd_router_preference_cmd, | |
6147e2c6 | 1398 | "ipv6 nd router-preference <high|medium|low>", |
b60668d0 CC |
1399 | "Interface IPv6 config commands\n" |
1400 | "Neighbor discovery\n" | |
1401 | "Default router preference\n" | |
1402 | "High default router preference\n" | |
1403 | "Low default router preference\n" | |
1404 | "Medium default router preference (default)\n") | |
1405 | { | |
ac4d0be5 | 1406 | int idx_high_medium_low = 3; |
1407 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1408 | struct zebra_if *zif = ifp->info; | |
1409 | int i = 0; | |
1410 | ||
1411 | while (0 != rtadv_pref_strs[i]) { | |
1412 | if (strncmp(argv[idx_high_medium_low]->arg, rtadv_pref_strs[i], | |
1413 | 1) | |
1414 | == 0) { | |
1415 | zif->rtadv.DefaultPreference = i; | |
1416 | return CMD_SUCCESS; | |
1417 | } | |
1418 | i++; | |
b60668d0 | 1419 | } |
b60668d0 | 1420 | |
ac4d0be5 | 1421 | return CMD_ERR_NO_MATCH; |
b60668d0 CC |
1422 | } |
1423 | ||
1424 | DEFUN (no_ipv6_nd_router_preference, | |
1425 | no_ipv6_nd_router_preference_cmd, | |
34ccea1e | 1426 | "no ipv6 nd router-preference [<high|medium|low>]", |
b60668d0 CC |
1427 | NO_STR |
1428 | "Interface IPv6 config commands\n" | |
1429 | "Neighbor discovery\n" | |
34ccea1e QY |
1430 | "Default router preference\n" |
1431 | "High default router preference\n" | |
1432 | "Medium default router preference (default)\n" | |
1433 | "Low default router preference\n") | |
b60668d0 | 1434 | { |
ac4d0be5 | 1435 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1436 | struct zebra_if *zif = ifp->info; | |
b60668d0 | 1437 | |
ac4d0be5 | 1438 | zif->rtadv.DefaultPreference = |
1439 | RTADV_PREF_MEDIUM; /* Default per RFC4191. */ | |
b60668d0 | 1440 | |
ac4d0be5 | 1441 | return CMD_SUCCESS; |
b60668d0 CC |
1442 | } |
1443 | ||
6ae93c05 DO |
1444 | DEFUN (ipv6_nd_mtu, |
1445 | ipv6_nd_mtu_cmd, | |
6147e2c6 | 1446 | "ipv6 nd mtu (1-65535)", |
6ae93c05 DO |
1447 | "Interface IPv6 config commands\n" |
1448 | "Neighbor discovery\n" | |
1449 | "Advertised MTU\n" | |
1450 | "MTU in bytes\n") | |
1451 | { | |
ac4d0be5 | 1452 | int idx_number = 3; |
1453 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1454 | struct zebra_if *zif = ifp->info; | |
1455 | VTY_GET_INTEGER_RANGE("MTU", zif->rtadv.AdvLinkMTU, | |
1456 | argv[idx_number]->arg, 1, 65535); | |
1457 | return CMD_SUCCESS; | |
6ae93c05 DO |
1458 | } |
1459 | ||
1460 | DEFUN (no_ipv6_nd_mtu, | |
1461 | no_ipv6_nd_mtu_cmd, | |
34ccea1e | 1462 | "no ipv6 nd mtu [(1-65535)]", |
6ae93c05 DO |
1463 | NO_STR |
1464 | "Interface IPv6 config commands\n" | |
1465 | "Neighbor discovery\n" | |
34ccea1e QY |
1466 | "Advertised MTU\n" |
1467 | "MTU in bytes\n") | |
6ae93c05 | 1468 | { |
ac4d0be5 | 1469 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1470 | struct zebra_if *zif = ifp->info; | |
1471 | zif->rtadv.AdvLinkMTU = 0; | |
1472 | return CMD_SUCCESS; | |
6ae93c05 DO |
1473 | } |
1474 | ||
6ae93c05 | 1475 | |
718e3744 | 1476 | /* Write configuration about router advertisement. */ |
ac4d0be5 | 1477 | void rtadv_config_write(struct vty *vty, struct interface *ifp) |
718e3744 | 1478 | { |
ac4d0be5 | 1479 | struct zebra_if *zif; |
1480 | struct listnode *node; | |
1481 | struct rtadv_prefix *rprefix; | |
1482 | char buf[PREFIX_STRLEN]; | |
1483 | int interval; | |
1484 | ||
1485 | zif = ifp->info; | |
1486 | ||
1487 | if (!(if_is_loopback(ifp) | |
1488 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK))) { | |
1489 | if (zif->rtadv.AdvSendAdvertisements) | |
1490 | vty_out(vty, " no ipv6 nd suppress-ra%s", VTY_NEWLINE); | |
1491 | } | |
1492 | ||
1493 | interval = zif->rtadv.MaxRtrAdvInterval; | |
1494 | if (interval % 1000) | |
1495 | vty_out(vty, " ipv6 nd ra-interval msec %d%s", interval, | |
1496 | VTY_NEWLINE); | |
1497 | else if (interval != RTADV_MAX_RTR_ADV_INTERVAL) | |
1498 | vty_out(vty, " ipv6 nd ra-interval %d%s", interval / 1000, | |
1499 | VTY_NEWLINE); | |
1500 | ||
1501 | if (zif->rtadv.AdvIntervalOption) | |
1502 | vty_out(vty, " ipv6 nd adv-interval-option%s", VTY_NEWLINE); | |
1503 | ||
1504 | if (zif->rtadv.AdvDefaultLifetime != -1) | |
1505 | vty_out(vty, " ipv6 nd ra-lifetime %d%s", | |
1506 | zif->rtadv.AdvDefaultLifetime, VTY_NEWLINE); | |
1507 | ||
1508 | if (zif->rtadv.HomeAgentPreference) | |
1509 | vty_out(vty, " ipv6 nd home-agent-preference %u%s", | |
1510 | zif->rtadv.HomeAgentPreference, VTY_NEWLINE); | |
1511 | ||
1512 | if (zif->rtadv.HomeAgentLifetime != -1) | |
1513 | vty_out(vty, " ipv6 nd home-agent-lifetime %u%s", | |
1514 | zif->rtadv.HomeAgentLifetime, VTY_NEWLINE); | |
1515 | ||
1516 | if (zif->rtadv.AdvHomeAgentFlag) | |
1517 | vty_out(vty, " ipv6 nd home-agent-config-flag%s", VTY_NEWLINE); | |
1518 | ||
1519 | if (zif->rtadv.AdvReachableTime) | |
1520 | vty_out(vty, " ipv6 nd reachable-time %d%s", | |
1521 | zif->rtadv.AdvReachableTime, VTY_NEWLINE); | |
1522 | ||
1523 | if (zif->rtadv.AdvManagedFlag) | |
1524 | vty_out(vty, " ipv6 nd managed-config-flag%s", VTY_NEWLINE); | |
1525 | ||
1526 | if (zif->rtadv.AdvOtherConfigFlag) | |
1527 | vty_out(vty, " ipv6 nd other-config-flag%s", VTY_NEWLINE); | |
1528 | ||
1529 | if (zif->rtadv.DefaultPreference != RTADV_PREF_MEDIUM) | |
1530 | vty_out(vty, " ipv6 nd router-preference %s%s", | |
1531 | rtadv_pref_strs[zif->rtadv.DefaultPreference], | |
1532 | VTY_NEWLINE); | |
1533 | ||
1534 | if (zif->rtadv.AdvLinkMTU) | |
1535 | vty_out(vty, " ipv6 nd mtu %d%s", zif->rtadv.AdvLinkMTU, | |
1536 | VTY_NEWLINE); | |
1537 | ||
1538 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
1539 | vty_out(vty, " ipv6 nd prefix %s", | |
1540 | prefix2str(&rprefix->prefix, buf, sizeof(buf))); | |
1541 | if ((rprefix->AdvValidLifetime != RTADV_VALID_LIFETIME) | |
1542 | || (rprefix->AdvPreferredLifetime | |
1543 | != RTADV_PREFERRED_LIFETIME)) { | |
1544 | if (rprefix->AdvValidLifetime == UINT32_MAX) | |
1545 | vty_out(vty, " infinite"); | |
1546 | else | |
1547 | vty_out(vty, " %u", rprefix->AdvValidLifetime); | |
1548 | if (rprefix->AdvPreferredLifetime == UINT32_MAX) | |
1549 | vty_out(vty, " infinite"); | |
1550 | else | |
1551 | vty_out(vty, " %u", | |
1552 | rprefix->AdvPreferredLifetime); | |
1553 | } | |
1554 | if (!rprefix->AdvOnLinkFlag) | |
1555 | vty_out(vty, " off-link"); | |
1556 | if (!rprefix->AdvAutonomousFlag) | |
1557 | vty_out(vty, " no-autoconfig"); | |
1558 | if (rprefix->AdvRouterAddressFlag) | |
1559 | vty_out(vty, " router-address"); | |
1560 | vty_out(vty, "%s", VTY_NEWLINE); | |
3e31cded | 1561 | } |
718e3744 | 1562 | } |
1563 | ||
718e3744 | 1564 | |
ac4d0be5 | 1565 | static void rtadv_event(struct zebra_ns *zns, enum rtadv_event event, int val) |
718e3744 | 1566 | { |
ac4d0be5 | 1567 | struct rtadv *rtadv = &zns->rtadv; |
1568 | ||
1569 | switch (event) { | |
1570 | case RTADV_START: | |
1571 | if (!rtadv->ra_read) | |
1572 | rtadv->ra_read = thread_add_read(zebrad.master, | |
1573 | rtadv_read, zns, val); | |
1574 | if (!rtadv->ra_timer) | |
1575 | rtadv->ra_timer = thread_add_event(zebrad.master, | |
1576 | rtadv_timer, zns, 0); | |
1577 | break; | |
1578 | case RTADV_STOP: | |
1579 | if (rtadv->ra_timer) { | |
1580 | thread_cancel(rtadv->ra_timer); | |
1581 | rtadv->ra_timer = NULL; | |
1582 | } | |
1583 | if (rtadv->ra_read) { | |
1584 | thread_cancel(rtadv->ra_read); | |
1585 | rtadv->ra_read = NULL; | |
1586 | } | |
1587 | break; | |
1588 | case RTADV_TIMER: | |
1589 | if (!rtadv->ra_timer) | |
1590 | rtadv->ra_timer = thread_add_timer( | |
1591 | zebrad.master, rtadv_timer, zns, val); | |
1592 | break; | |
1593 | case RTADV_TIMER_MSEC: | |
1594 | if (!rtadv->ra_timer) | |
1595 | rtadv->ra_timer = thread_add_timer_msec( | |
1596 | zebrad.master, rtadv_timer, zns, val); | |
1597 | break; | |
1598 | case RTADV_READ: | |
1599 | if (!rtadv->ra_read) | |
1600 | rtadv->ra_read = thread_add_read(zebrad.master, | |
1601 | rtadv_read, zns, val); | |
1602 | break; | |
1603 | default: | |
1604 | break; | |
718e3744 | 1605 | } |
ac4d0be5 | 1606 | return; |
718e3744 | 1607 | } |
1608 | ||
ac4d0be5 | 1609 | void rtadv_init(struct zebra_ns *zns) |
718e3744 | 1610 | { |
ac4d0be5 | 1611 | zns->rtadv.sock = rtadv_make_socket(); |
cd80d74f | 1612 | } |
718e3744 | 1613 | |
ac4d0be5 | 1614 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 1615 | { |
ac4d0be5 | 1616 | rtadv_event(zns, RTADV_STOP, 0); |
1617 | if (zns->rtadv.sock >= 0) { | |
1618 | close(zns->rtadv.sock); | |
1619 | zns->rtadv.sock = -1; | |
1620 | } | |
1621 | ||
1622 | zns->rtadv.adv_if_count = 0; | |
1623 | zns->rtadv.adv_msec_if_count = 0; | |
cd80d74f | 1624 | } |
718e3744 | 1625 | |
ac4d0be5 | 1626 | void rtadv_cmd_init(void) |
cd80d74f | 1627 | { |
ac4d0be5 | 1628 | install_element(INTERFACE_NODE, &ipv6_nd_suppress_ra_cmd); |
1629 | install_element(INTERFACE_NODE, &no_ipv6_nd_suppress_ra_cmd); | |
1630 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_cmd); | |
1631 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_msec_cmd); | |
1632 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_interval_cmd); | |
1633 | install_element(INTERFACE_NODE, &ipv6_nd_ra_lifetime_cmd); | |
1634 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_lifetime_cmd); | |
1635 | install_element(INTERFACE_NODE, &ipv6_nd_reachable_time_cmd); | |
1636 | install_element(INTERFACE_NODE, &no_ipv6_nd_reachable_time_cmd); | |
1637 | install_element(INTERFACE_NODE, &ipv6_nd_managed_config_flag_cmd); | |
1638 | install_element(INTERFACE_NODE, &no_ipv6_nd_managed_config_flag_cmd); | |
1639 | install_element(INTERFACE_NODE, &ipv6_nd_other_config_flag_cmd); | |
1640 | install_element(INTERFACE_NODE, &no_ipv6_nd_other_config_flag_cmd); | |
1641 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_config_flag_cmd); | |
1642 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_config_flag_cmd); | |
1643 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_preference_cmd); | |
1644 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_preference_cmd); | |
1645 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_lifetime_cmd); | |
1646 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_lifetime_cmd); | |
1647 | install_element(INTERFACE_NODE, | |
1648 | &ipv6_nd_adv_interval_config_option_cmd); | |
1649 | install_element(INTERFACE_NODE, | |
1650 | &no_ipv6_nd_adv_interval_config_option_cmd); | |
1651 | install_element(INTERFACE_NODE, &ipv6_nd_prefix_cmd); | |
1652 | install_element(INTERFACE_NODE, &no_ipv6_nd_prefix_cmd); | |
1653 | install_element(INTERFACE_NODE, &ipv6_nd_router_preference_cmd); | |
1654 | install_element(INTERFACE_NODE, &no_ipv6_nd_router_preference_cmd); | |
1655 | install_element(INTERFACE_NODE, &ipv6_nd_mtu_cmd); | |
1656 | install_element(INTERFACE_NODE, &no_ipv6_nd_mtu_cmd); | |
718e3744 | 1657 | } |
1658 | ||
ac4d0be5 | 1659 | static int if_join_all_router(int sock, struct interface *ifp) |
718e3744 | 1660 | { |
ac4d0be5 | 1661 | int ret; |
718e3744 | 1662 | |
ac4d0be5 | 1663 | struct ipv6_mreq mreq; |
718e3744 | 1664 | |
ac4d0be5 | 1665 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
1666 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
1667 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 1668 | |
ac4d0be5 | 1669 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char *)&mreq, |
1670 | sizeof mreq); | |
1671 | if (ret < 0) | |
1672 | zlog_warn("%s(%u): Failed to join group, socket %u error %s", | |
1673 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 1674 | |
ac4d0be5 | 1675 | if (IS_ZEBRA_DEBUG_EVENT) |
1676 | zlog_debug( | |
1677 | "%s(%u): Join All-Routers multicast group, socket %u", | |
1678 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 1679 | |
ac4d0be5 | 1680 | return 0; |
718e3744 | 1681 | } |
1682 | ||
ac4d0be5 | 1683 | static int if_leave_all_router(int sock, struct interface *ifp) |
718e3744 | 1684 | { |
ac4d0be5 | 1685 | int ret; |
718e3744 | 1686 | |
ac4d0be5 | 1687 | struct ipv6_mreq mreq; |
718e3744 | 1688 | |
ac4d0be5 | 1689 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
1690 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
1691 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 1692 | |
ac4d0be5 | 1693 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_LEAVE_GROUP, (char *)&mreq, |
1694 | sizeof mreq); | |
1695 | if (ret < 0) | |
1696 | zlog_warn("%s(%u): Failed to leave group, socket %u error %s", | |
1697 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 1698 | |
ac4d0be5 | 1699 | if (IS_ZEBRA_DEBUG_EVENT) |
1700 | zlog_debug( | |
1701 | "%s(%u): Leave All-Routers multicast group, socket %u", | |
1702 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 1703 | |
ac4d0be5 | 1704 | return 0; |
718e3744 | 1705 | } |
1706 | ||
1707 | #else | |
ac4d0be5 | 1708 | void rtadv_init(struct zebra_ns *zns) |
cd80d74f | 1709 | { |
ac4d0be5 | 1710 | /* Empty.*/; |
cd80d74f | 1711 | } |
ac4d0be5 | 1712 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 1713 | { |
ac4d0be5 | 1714 | /* Empty.*/; |
cd80d74f | 1715 | } |
ac4d0be5 | 1716 | void rtadv_cmd_init(void) |
718e3744 | 1717 | { |
ac4d0be5 | 1718 | /* Empty.*/; |
718e3744 | 1719 | } |
56c1f7d8 | 1720 | #endif /* HAVE_RTADV */ |