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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 | ||
2eb27eec DL |
65 | /* Order is intentional. Matches RFC4191. This array is also used for |
66 | command matching, so only modify with care. */ | |
67 | const char *rtadv_pref_strs[] = {"medium", "high", "INVALID", "low", 0}; | |
68 | ||
d62a17ae | 69 | enum rtadv_event { |
70 | RTADV_START, | |
71 | RTADV_STOP, | |
72 | RTADV_TIMER, | |
73 | RTADV_TIMER_MSEC, | |
74 | RTADV_READ | |
75 | }; | |
718e3744 | 76 | |
d62a17ae | 77 | static void rtadv_event(struct zebra_ns *, enum rtadv_event, int); |
718e3744 | 78 | |
d62a17ae | 79 | static int if_join_all_router(int, struct interface *); |
80 | static int if_leave_all_router(int, struct interface *); | |
6b0655a2 | 81 | |
d62a17ae | 82 | static int rtadv_increment_received(struct zebra_ns *zns, ifindex_t *ifindex) |
911ad1e2 | 83 | { |
d62a17ae | 84 | int ret = -1; |
85 | struct interface *iface; | |
86 | struct zebra_if *zif; | |
87 | ||
88 | iface = if_lookup_by_index_per_ns(zns, *ifindex); | |
89 | if (iface && iface->info) { | |
90 | zif = iface->info; | |
91 | zif->ra_rcvd++; | |
92 | ret = 0; | |
93 | } | |
94 | return ret; | |
795b5abf QY |
95 | } |
96 | ||
d62a17ae | 97 | static int rtadv_recv_packet(struct zebra_ns *zns, int sock, u_char *buf, |
98 | int buflen, struct sockaddr_in6 *from, | |
99 | ifindex_t *ifindex, int *hoplimit) | |
718e3744 | 100 | { |
d62a17ae | 101 | int ret; |
102 | struct msghdr msg; | |
103 | struct iovec iov; | |
104 | struct cmsghdr *cmsgptr; | |
105 | struct in6_addr dst; | |
106 | ||
107 | char adata[1024]; | |
108 | ||
109 | /* Fill in message and iovec. */ | |
0af35d90 | 110 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 111 | msg.msg_name = (void *)from; |
112 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
113 | msg.msg_iov = &iov; | |
114 | msg.msg_iovlen = 1; | |
115 | msg.msg_control = (void *)adata; | |
116 | msg.msg_controllen = sizeof adata; | |
117 | iov.iov_base = buf; | |
118 | iov.iov_len = buflen; | |
119 | ||
120 | /* If recvmsg fail return minus value. */ | |
121 | ret = recvmsg(sock, &msg, 0); | |
122 | if (ret < 0) | |
123 | return ret; | |
124 | ||
125 | for (cmsgptr = ZCMSG_FIRSTHDR(&msg); cmsgptr != NULL; | |
126 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) { | |
127 | /* I want interface index which this packet comes from. */ | |
128 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
129 | && cmsgptr->cmsg_type == IPV6_PKTINFO) { | |
130 | struct in6_pktinfo *ptr; | |
131 | ||
132 | ptr = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
133 | *ifindex = ptr->ipi6_ifindex; | |
134 | memcpy(&dst, &ptr->ipi6_addr, sizeof(ptr->ipi6_addr)); | |
135 | } | |
136 | ||
137 | /* Incoming packet's hop limit. */ | |
138 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
139 | && cmsgptr->cmsg_type == IPV6_HOPLIMIT) { | |
140 | int *hoptr = (int *)CMSG_DATA(cmsgptr); | |
141 | *hoplimit = *hoptr; | |
142 | } | |
b0b709ab | 143 | } |
795b5abf | 144 | |
d62a17ae | 145 | rtadv_increment_received(zns, ifindex); |
146 | return ret; | |
718e3744 | 147 | } |
148 | ||
149 | #define RTADV_MSG_SIZE 4096 | |
150 | ||
151 | /* Send router advertisement packet. */ | |
d62a17ae | 152 | static void rtadv_send_packet(int sock, struct interface *ifp) |
718e3744 | 153 | { |
d62a17ae | 154 | struct msghdr msg; |
155 | struct iovec iov; | |
156 | struct cmsghdr *cmsgptr; | |
157 | struct in6_pktinfo *pkt; | |
158 | struct sockaddr_in6 addr; | |
159 | static void *adata = NULL; | |
160 | unsigned char buf[RTADV_MSG_SIZE]; | |
161 | struct nd_router_advert *rtadv; | |
162 | int ret; | |
163 | int len = 0; | |
164 | struct zebra_if *zif; | |
165 | struct rtadv_prefix *rprefix; | |
166 | u_char all_nodes_addr[] = {0xff, 0x02, 0, 0, 0, 0, 0, 0, | |
167 | 0, 0, 0, 0, 0, 0, 0, 1}; | |
168 | struct listnode *node; | |
169 | u_int16_t pkt_RouterLifetime; | |
170 | ||
171 | /* | |
172 | * Allocate control message bufffer. This is dynamic because | |
173 | * CMSG_SPACE is not guaranteed not to call a function. Note that | |
174 | * the size will be different on different architectures due to | |
175 | * differing alignment rules. | |
176 | */ | |
177 | if (adata == NULL) { | |
178 | /* XXX Free on shutdown. */ | |
179 | adata = malloc(CMSG_SPACE(sizeof(struct in6_pktinfo))); | |
180 | ||
181 | if (adata == NULL) | |
182 | zlog_err( | |
183 | "rtadv_send_packet: can't malloc control data"); | |
184 | } | |
185 | ||
186 | /* Logging of packet. */ | |
187 | if (IS_ZEBRA_DEBUG_PACKET) | |
188 | zlog_debug("%s(%u): Tx RA, socket %u", ifp->name, ifp->ifindex, | |
189 | sock); | |
190 | ||
191 | /* Fill in sockaddr_in6. */ | |
192 | memset(&addr, 0, sizeof(struct sockaddr_in6)); | |
193 | addr.sin6_family = AF_INET6; | |
718e3744 | 194 | #ifdef SIN6_LEN |
d62a17ae | 195 | addr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 196 | #endif /* SIN6_LEN */ |
d62a17ae | 197 | addr.sin6_port = htons(IPPROTO_ICMPV6); |
198 | IPV6_ADDR_COPY(&addr.sin6_addr, all_nodes_addr); | |
199 | ||
200 | /* Fetch interface information. */ | |
201 | zif = ifp->info; | |
202 | ||
203 | /* Make router advertisement message. */ | |
204 | rtadv = (struct nd_router_advert *)buf; | |
205 | ||
206 | rtadv->nd_ra_type = ND_ROUTER_ADVERT; | |
207 | rtadv->nd_ra_code = 0; | |
208 | rtadv->nd_ra_cksum = 0; | |
209 | ||
210 | rtadv->nd_ra_curhoplimit = 64; | |
211 | ||
212 | /* RFC4191: Default Router Preference is 0 if Router Lifetime is 0. */ | |
213 | rtadv->nd_ra_flags_reserved = zif->rtadv.AdvDefaultLifetime == 0 | |
214 | ? 0 | |
215 | : zif->rtadv.DefaultPreference; | |
216 | rtadv->nd_ra_flags_reserved <<= 3; | |
217 | ||
218 | if (zif->rtadv.AdvManagedFlag) | |
219 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_MANAGED; | |
220 | if (zif->rtadv.AdvOtherConfigFlag) | |
221 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_OTHER; | |
222 | if (zif->rtadv.AdvHomeAgentFlag) | |
223 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_HOME_AGENT; | |
224 | /* Note that according to Neighbor Discovery (RFC 4861 [18]), | |
225 | * AdvDefaultLifetime is by default based on the value of | |
226 | * MaxRtrAdvInterval. AdvDefaultLifetime is used in the Router Lifetime | |
227 | * field of Router Advertisements. Given that this field is expressed | |
228 | * in seconds, a small MaxRtrAdvInterval value can result in a zero | |
229 | * value for this field. To prevent this, routers SHOULD keep | |
230 | * AdvDefaultLifetime in at least one second, even if the use of | |
231 | * MaxRtrAdvInterval would result in a smaller value. -- RFC6275, 7.5 */ | |
232 | pkt_RouterLifetime = | |
233 | zif->rtadv.AdvDefaultLifetime != -1 | |
234 | ? zif->rtadv.AdvDefaultLifetime | |
235 | : MAX(1, 0.003 * zif->rtadv.MaxRtrAdvInterval); | |
236 | rtadv->nd_ra_router_lifetime = htons(pkt_RouterLifetime); | |
237 | rtadv->nd_ra_reachable = htonl(zif->rtadv.AdvReachableTime); | |
238 | rtadv->nd_ra_retransmit = htonl(0); | |
239 | ||
240 | len = sizeof(struct nd_router_advert); | |
241 | ||
242 | /* If both the Home Agent Preference and Home Agent Lifetime are set to | |
243 | * their default values specified above, this option SHOULD NOT be | |
244 | * included in the Router Advertisement messages sent by this home | |
245 | * agent. -- RFC6275, 7.4 */ | |
246 | if (zif->rtadv.AdvHomeAgentFlag | |
247 | && (zif->rtadv.HomeAgentPreference | |
248 | || zif->rtadv.HomeAgentLifetime != -1)) { | |
249 | struct nd_opt_homeagent_info *ndopt_hai = | |
250 | (struct nd_opt_homeagent_info *)(buf + len); | |
251 | ndopt_hai->nd_opt_hai_type = ND_OPT_HA_INFORMATION; | |
252 | ndopt_hai->nd_opt_hai_len = 1; | |
253 | ndopt_hai->nd_opt_hai_reserved = 0; | |
254 | ndopt_hai->nd_opt_hai_preference = | |
255 | htons(zif->rtadv.HomeAgentPreference); | |
256 | /* 16-bit unsigned integer. The lifetime associated with the | |
257 | * home | |
258 | * agent in units of seconds. The default value is the same as | |
259 | * the | |
260 | * Router Lifetime, as specified in the main body of the Router | |
261 | * Advertisement. The maximum value corresponds to 18.2 hours. | |
262 | * A | |
263 | * value of 0 MUST NOT be used. -- RFC6275, 7.5 */ | |
264 | ndopt_hai->nd_opt_hai_lifetime = | |
265 | htons(zif->rtadv.HomeAgentLifetime != -1 | |
266 | ? zif->rtadv.HomeAgentLifetime | |
267 | : MAX(1, pkt_RouterLifetime) /* 0 is OK | |
268 | for RL, | |
269 | but not | |
270 | for HAL*/ | |
9d303b37 | 271 | ); |
d62a17ae | 272 | len += sizeof(struct nd_opt_homeagent_info); |
273 | } | |
718e3744 | 274 | |
d62a17ae | 275 | if (zif->rtadv.AdvIntervalOption) { |
276 | struct nd_opt_adv_interval *ndopt_adv = | |
277 | (struct nd_opt_adv_interval *)(buf + len); | |
278 | ndopt_adv->nd_opt_ai_type = ND_OPT_ADV_INTERVAL; | |
279 | ndopt_adv->nd_opt_ai_len = 1; | |
280 | ndopt_adv->nd_opt_ai_reserved = 0; | |
281 | ndopt_adv->nd_opt_ai_interval = | |
282 | htonl(zif->rtadv.MaxRtrAdvInterval); | |
283 | len += sizeof(struct nd_opt_adv_interval); | |
284 | } | |
285 | ||
286 | /* Fill in prefix. */ | |
287 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
288 | struct nd_opt_prefix_info *pinfo; | |
718e3744 | 289 | |
d62a17ae | 290 | pinfo = (struct nd_opt_prefix_info *)(buf + len); |
718e3744 | 291 | |
d62a17ae | 292 | pinfo->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION; |
293 | pinfo->nd_opt_pi_len = 4; | |
294 | pinfo->nd_opt_pi_prefix_len = rprefix->prefix.prefixlen; | |
295 | ||
296 | pinfo->nd_opt_pi_flags_reserved = 0; | |
297 | if (rprefix->AdvOnLinkFlag) | |
298 | pinfo->nd_opt_pi_flags_reserved |= | |
299 | ND_OPT_PI_FLAG_ONLINK; | |
300 | if (rprefix->AdvAutonomousFlag) | |
301 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_AUTO; | |
302 | if (rprefix->AdvRouterAddressFlag) | |
303 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_RADDR; | |
304 | ||
305 | pinfo->nd_opt_pi_valid_time = htonl(rprefix->AdvValidLifetime); | |
306 | pinfo->nd_opt_pi_preferred_time = | |
307 | htonl(rprefix->AdvPreferredLifetime); | |
308 | pinfo->nd_opt_pi_reserved2 = 0; | |
309 | ||
310 | IPV6_ADDR_COPY(&pinfo->nd_opt_pi_prefix, | |
311 | &rprefix->prefix.prefix); | |
312 | ||
313 | #ifdef DEBUG | |
314 | { | |
315 | u_char buf[INET6_ADDRSTRLEN]; | |
316 | ||
317 | zlog_debug("DEBUG %s", | |
318 | inet_ntop(AF_INET6, &pinfo->nd_opt_pi_prefix, | |
319 | buf, INET6_ADDRSTRLEN)); | |
320 | } | |
718e3744 | 321 | #endif /* DEBUG */ |
322 | ||
d62a17ae | 323 | len += sizeof(struct nd_opt_prefix_info); |
324 | } | |
325 | ||
326 | /* Hardware address. */ | |
327 | if (ifp->hw_addr_len != 0) { | |
328 | buf[len++] = ND_OPT_SOURCE_LINKADDR; | |
329 | ||
330 | /* Option length should be rounded up to next octet if | |
331 | the link address does not end on an octet boundary. */ | |
332 | buf[len++] = (ifp->hw_addr_len + 9) >> 3; | |
333 | ||
334 | memcpy(buf + len, ifp->hw_addr, ifp->hw_addr_len); | |
335 | len += ifp->hw_addr_len; | |
336 | ||
337 | /* Pad option to end on an octet boundary. */ | |
338 | memset(buf + len, 0, -(ifp->hw_addr_len + 2) & 0x7); | |
339 | len += -(ifp->hw_addr_len + 2) & 0x7; | |
340 | } | |
341 | ||
342 | /* MTU */ | |
343 | if (zif->rtadv.AdvLinkMTU) { | |
344 | struct nd_opt_mtu *opt = (struct nd_opt_mtu *)(buf + len); | |
345 | opt->nd_opt_mtu_type = ND_OPT_MTU; | |
346 | opt->nd_opt_mtu_len = 1; | |
347 | opt->nd_opt_mtu_reserved = 0; | |
348 | opt->nd_opt_mtu_mtu = htonl(zif->rtadv.AdvLinkMTU); | |
349 | len += sizeof(struct nd_opt_mtu); | |
350 | } | |
351 | ||
352 | msg.msg_name = (void *)&addr; | |
353 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
354 | msg.msg_iov = &iov; | |
355 | msg.msg_iovlen = 1; | |
356 | msg.msg_control = (void *)adata; | |
357 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
358 | msg.msg_flags = 0; | |
359 | iov.iov_base = buf; | |
360 | iov.iov_len = len; | |
361 | ||
362 | cmsgptr = ZCMSG_FIRSTHDR(&msg); | |
363 | cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); | |
364 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
365 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
366 | ||
367 | pkt = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
368 | memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); | |
369 | pkt->ipi6_ifindex = ifp->ifindex; | |
370 | ||
371 | ret = sendmsg(sock, &msg, 0); | |
372 | if (ret < 0) { | |
373 | zlog_err("%s(%u): Tx RA failed, socket %u error %d (%s)", | |
374 | ifp->name, ifp->ifindex, sock, errno, | |
375 | safe_strerror(errno)); | |
376 | } else | |
377 | zif->ra_sent++; | |
718e3744 | 378 | } |
379 | ||
d62a17ae | 380 | static int rtadv_timer(struct thread *thread) |
718e3744 | 381 | { |
d62a17ae | 382 | struct zebra_ns *zns = THREAD_ARG(thread); |
383 | struct vrf *vrf; | |
384 | struct listnode *node, *nnode; | |
385 | struct interface *ifp; | |
386 | struct zebra_if *zif; | |
387 | int period; | |
388 | ||
389 | zns->rtadv.ra_timer = NULL; | |
390 | if (zns->rtadv.adv_msec_if_count == 0) { | |
391 | period = 1000; /* 1 s */ | |
392 | rtadv_event(zns, RTADV_TIMER, 1 /* 1 s */); | |
393 | } else { | |
394 | period = 10; /* 10 ms */ | |
395 | rtadv_event(zns, RTADV_TIMER_MSEC, 10 /* 10 ms */); | |
396 | } | |
397 | ||
398 | RB_FOREACH(vrf, vrf_id_head, &vrfs_by_id) | |
399 | for (ALL_LIST_ELEMENTS(vrf->iflist, node, nnode, ifp)) { | |
400 | if (if_is_loopback(ifp) | |
401 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK) | |
402 | || !if_is_operative(ifp)) | |
403 | continue; | |
404 | ||
405 | zif = ifp->info; | |
406 | ||
407 | if (zif->rtadv.AdvSendAdvertisements) { | |
408 | if (zif->rtadv.inFastRexmit) { | |
409 | /* We assume we fast rexmit every sec so no | |
410 | * additional vars */ | |
411 | if (--zif->rtadv.NumFastReXmitsRemain <= 0) | |
412 | zif->rtadv.inFastRexmit = 0; | |
413 | ||
414 | if (IS_ZEBRA_DEBUG_SEND) | |
415 | zlog_debug( | |
416 | "Fast RA Rexmit on interface %s", | |
417 | ifp->name); | |
418 | ||
419 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
420 | } else { | |
421 | zif->rtadv.AdvIntervalTimer -= period; | |
422 | if (zif->rtadv.AdvIntervalTimer <= 0) { | |
423 | /* FIXME: using MaxRtrAdvInterval each | |
424 | time isn't what section | |
425 | 6.2.4 of RFC4861 tells to do. */ | |
426 | zif->rtadv.AdvIntervalTimer = | |
427 | zif->rtadv.MaxRtrAdvInterval; | |
428 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
429 | } | |
430 | } | |
431 | } | |
432 | } | |
433 | ||
434 | return 0; | |
718e3744 | 435 | } |
436 | ||
d62a17ae | 437 | static void rtadv_process_solicit(struct interface *ifp) |
718e3744 | 438 | { |
d62a17ae | 439 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); |
440 | struct zebra_ns *zns = zvrf->zns; | |
718e3744 | 441 | |
d62a17ae | 442 | assert(zns); |
443 | rtadv_send_packet(zns->rtadv.sock, ifp); | |
718e3744 | 444 | } |
445 | ||
d62a17ae | 446 | static void rtadv_process_advert(u_char *msg, unsigned int len, |
447 | struct interface *ifp, | |
448 | struct sockaddr_in6 *addr) | |
718e3744 | 449 | { |
d62a17ae | 450 | struct nd_router_advert *radvert; |
451 | char addr_str[INET6_ADDRSTRLEN]; | |
452 | struct zebra_if *zif; | |
453 | struct prefix p; | |
718e3744 | 454 | |
d62a17ae | 455 | zif = ifp->info; |
a80beece | 456 | |
d62a17ae | 457 | inet_ntop(AF_INET6, &addr->sin6_addr, addr_str, INET6_ADDRSTRLEN); |
458 | ||
459 | if (len < sizeof(struct nd_router_advert)) { | |
460 | zlog_warn("%s(%u): Rx RA with invalid length %d from %s", | |
461 | ifp->name, ifp->ifindex, len, addr_str); | |
462 | return; | |
463 | } | |
464 | if (!IN6_IS_ADDR_LINKLOCAL(&addr->sin6_addr)) { | |
465 | zlog_warn( | |
466 | "%s(%u): Rx RA with non-linklocal source address from %s", | |
467 | ifp->name, ifp->ifindex, addr_str); | |
468 | return; | |
469 | } | |
470 | ||
471 | radvert = (struct nd_router_advert *)msg; | |
472 | ||
473 | if ((radvert->nd_ra_curhoplimit && zif->rtadv.AdvCurHopLimit) | |
474 | && (radvert->nd_ra_curhoplimit != zif->rtadv.AdvCurHopLimit)) { | |
475 | zlog_warn( | |
476 | "%s(%u): Rx RA - our AdvCurHopLimit doesn't agree with %s", | |
477 | ifp->name, ifp->ifindex, addr_str); | |
478 | } | |
479 | ||
480 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED) | |
481 | && !zif->rtadv.AdvManagedFlag) { | |
482 | zlog_warn( | |
483 | "%s(%u): Rx RA - our AdvManagedFlag doesn't agree with %s", | |
484 | ifp->name, ifp->ifindex, addr_str); | |
485 | } | |
486 | ||
487 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_OTHER) | |
488 | && !zif->rtadv.AdvOtherConfigFlag) { | |
489 | zlog_warn( | |
490 | "%s(%u): Rx RA - our AdvOtherConfigFlag doesn't agree with %s", | |
491 | ifp->name, ifp->ifindex, addr_str); | |
492 | } | |
493 | ||
494 | if ((radvert->nd_ra_reachable && zif->rtadv.AdvReachableTime) | |
495 | && (ntohl(radvert->nd_ra_reachable) | |
496 | != zif->rtadv.AdvReachableTime)) { | |
497 | zlog_warn( | |
498 | "%s(%u): Rx RA - our AdvReachableTime doesn't agree with %s", | |
499 | ifp->name, ifp->ifindex, addr_str); | |
500 | } | |
501 | ||
502 | if ((radvert->nd_ra_retransmit && zif->rtadv.AdvRetransTimer) | |
503 | && (ntohl(radvert->nd_ra_retransmit) | |
504 | != (unsigned int)zif->rtadv.AdvRetransTimer)) { | |
505 | zlog_warn( | |
506 | "%s(%u): Rx RA - our AdvRetransTimer doesn't agree with %s", | |
507 | ifp->name, ifp->ifindex, addr_str); | |
508 | } | |
509 | ||
510 | /* Create entry for neighbor if not known. */ | |
511 | p.family = AF_INET6; | |
512 | IPV6_ADDR_COPY(&p.u.prefix, &addr->sin6_addr); | |
513 | p.prefixlen = IPV6_MAX_PREFIXLEN; | |
514 | ||
515 | if (!nbr_connected_check(ifp, &p)) | |
516 | nbr_connected_add_ipv6(ifp, &addr->sin6_addr); | |
718e3744 | 517 | } |
518 | ||
d62a17ae | 519 | |
520 | static void rtadv_process_packet(u_char *buf, unsigned int len, | |
521 | ifindex_t ifindex, int hoplimit, | |
522 | struct sockaddr_in6 *from, | |
523 | struct zebra_ns *zns) | |
718e3744 | 524 | { |
d62a17ae | 525 | struct icmp6_hdr *icmph; |
526 | struct interface *ifp; | |
527 | struct zebra_if *zif; | |
528 | char addr_str[INET6_ADDRSTRLEN]; | |
529 | ||
530 | inet_ntop(AF_INET6, &from->sin6_addr, addr_str, INET6_ADDRSTRLEN); | |
531 | ||
532 | /* Interface search. */ | |
533 | ifp = if_lookup_by_index_per_ns(zns, ifindex); | |
534 | if (ifp == NULL) { | |
535 | zlog_warn("RA/RS received on unknown IF %u from %s", ifindex, | |
536 | addr_str); | |
537 | return; | |
538 | } | |
539 | ||
540 | if (IS_ZEBRA_DEBUG_PACKET) | |
541 | zlog_debug("%s(%u): Rx RA/RS len %d from %s", ifp->name, | |
542 | ifp->ifindex, len, addr_str); | |
543 | ||
544 | if (if_is_loopback(ifp) | |
545 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) | |
546 | return; | |
718e3744 | 547 | |
d62a17ae | 548 | /* Check interface configuration. */ |
549 | zif = ifp->info; | |
550 | if (!zif->rtadv.AdvSendAdvertisements) | |
551 | return; | |
718e3744 | 552 | |
d62a17ae | 553 | /* ICMP message length check. */ |
554 | if (len < sizeof(struct icmp6_hdr)) { | |
555 | zlog_warn("%s(%u): Rx RA with Invalid ICMPV6 packet length %d", | |
556 | ifp->name, ifp->ifindex, len); | |
557 | return; | |
558 | } | |
559 | ||
560 | icmph = (struct icmp6_hdr *)buf; | |
718e3744 | 561 | |
d62a17ae | 562 | /* ICMP message type check. */ |
563 | if (icmph->icmp6_type != ND_ROUTER_SOLICIT | |
564 | && icmph->icmp6_type != ND_ROUTER_ADVERT) { | |
565 | zlog_warn("%s(%u): Rx RA - Unwanted ICMPV6 message type %d", | |
566 | ifp->name, ifp->ifindex, icmph->icmp6_type); | |
567 | return; | |
568 | } | |
718e3744 | 569 | |
d62a17ae | 570 | /* Hoplimit check. */ |
571 | if (hoplimit >= 0 && hoplimit != 255) { | |
572 | zlog_warn("%s(%u): Rx RA - Invalid hoplimit %d", ifp->name, | |
573 | ifp->ifindex, hoplimit); | |
574 | return; | |
575 | } | |
718e3744 | 576 | |
d62a17ae | 577 | /* Check ICMP message type. */ |
578 | if (icmph->icmp6_type == ND_ROUTER_SOLICIT) | |
579 | rtadv_process_solicit(ifp); | |
580 | else if (icmph->icmp6_type == ND_ROUTER_ADVERT) | |
581 | rtadv_process_advert(buf, len, ifp, from); | |
718e3744 | 582 | |
d62a17ae | 583 | return; |
718e3744 | 584 | } |
585 | ||
d62a17ae | 586 | static int rtadv_read(struct thread *thread) |
718e3744 | 587 | { |
d62a17ae | 588 | int sock; |
589 | int len; | |
590 | u_char buf[RTADV_MSG_SIZE]; | |
591 | struct sockaddr_in6 from; | |
592 | ifindex_t ifindex = 0; | |
593 | int hoplimit = -1; | |
594 | struct zebra_ns *zns = THREAD_ARG(thread); | |
595 | ||
596 | sock = THREAD_FD(thread); | |
597 | zns->rtadv.ra_read = NULL; | |
598 | ||
599 | /* Register myself. */ | |
600 | rtadv_event(zns, RTADV_READ, sock); | |
601 | ||
602 | len = rtadv_recv_packet(zns, sock, buf, sizeof(buf), &from, &ifindex, | |
603 | &hoplimit); | |
604 | ||
605 | if (len < 0) { | |
606 | zlog_warn("RA/RS recv failed, socket %u error %s", sock, | |
607 | safe_strerror(errno)); | |
608 | return len; | |
609 | } | |
610 | ||
611 | rtadv_process_packet(buf, (unsigned)len, ifindex, hoplimit, &from, zns); | |
612 | ||
613 | return 0; | |
718e3744 | 614 | } |
6b0655a2 | 615 | |
d62a17ae | 616 | static int rtadv_make_socket(void) |
718e3744 | 617 | { |
d62a17ae | 618 | int sock; |
619 | int ret = 0; | |
620 | struct icmp6_filter filter; | |
621 | ||
622 | if (zserv_privs.change(ZPRIVS_RAISE)) | |
623 | zlog_err("rtadv_make_socket: could not raise privs, %s", | |
624 | safe_strerror(errno)); | |
625 | ||
626 | sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); | |
627 | ||
628 | if (zserv_privs.change(ZPRIVS_LOWER)) | |
629 | zlog_err("rtadv_make_socket: could not lower privs, %s", | |
630 | safe_strerror(errno)); | |
631 | ||
632 | if (sock < 0) { | |
d62a17ae | 633 | return -1; |
634 | } | |
635 | ||
636 | ret = setsockopt_ipv6_pktinfo(sock, 1); | |
637 | if (ret < 0) { | |
638 | close(sock); | |
639 | return ret; | |
640 | } | |
641 | ret = setsockopt_ipv6_multicast_loop(sock, 0); | |
642 | if (ret < 0) { | |
643 | close(sock); | |
644 | return ret; | |
645 | } | |
646 | ret = setsockopt_ipv6_unicast_hops(sock, 255); | |
647 | if (ret < 0) { | |
648 | close(sock); | |
649 | return ret; | |
650 | } | |
651 | ret = setsockopt_ipv6_multicast_hops(sock, 255); | |
652 | if (ret < 0) { | |
653 | close(sock); | |
654 | return ret; | |
655 | } | |
656 | ret = setsockopt_ipv6_hoplimit(sock, 1); | |
657 | if (ret < 0) { | |
658 | close(sock); | |
659 | return ret; | |
660 | } | |
661 | ||
662 | ICMP6_FILTER_SETBLOCKALL(&filter); | |
663 | ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter); | |
664 | ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter); | |
665 | ||
666 | ret = setsockopt(sock, IPPROTO_ICMPV6, ICMP6_FILTER, &filter, | |
667 | sizeof(struct icmp6_filter)); | |
668 | if (ret < 0) { | |
669 | zlog_info("ICMP6_FILTER set fail: %s", safe_strerror(errno)); | |
670 | return ret; | |
671 | } | |
672 | ||
673 | return sock; | |
718e3744 | 674 | } |
675 | ||
d62a17ae | 676 | static struct rtadv_prefix *rtadv_prefix_new(void) |
718e3744 | 677 | { |
d62a17ae | 678 | return XCALLOC(MTYPE_RTADV_PREFIX, sizeof(struct rtadv_prefix)); |
718e3744 | 679 | } |
680 | ||
d62a17ae | 681 | static void rtadv_prefix_free(struct rtadv_prefix *rtadv_prefix) |
718e3744 | 682 | { |
d62a17ae | 683 | XFREE(MTYPE_RTADV_PREFIX, rtadv_prefix); |
684 | } | |
718e3744 | 685 | |
d62a17ae | 686 | static struct rtadv_prefix *rtadv_prefix_lookup(struct list *rplist, |
687 | struct prefix_ipv6 *p) | |
688 | { | |
689 | struct listnode *node; | |
690 | struct rtadv_prefix *rprefix; | |
691 | ||
692 | for (ALL_LIST_ELEMENTS_RO(rplist, node, rprefix)) | |
693 | if (prefix_same((struct prefix *)&rprefix->prefix, | |
694 | (struct prefix *)p)) | |
695 | return rprefix; | |
696 | return NULL; | |
718e3744 | 697 | } |
698 | ||
d62a17ae | 699 | static struct rtadv_prefix *rtadv_prefix_get(struct list *rplist, |
700 | struct prefix_ipv6 *p) | |
718e3744 | 701 | { |
d62a17ae | 702 | struct rtadv_prefix *rprefix; |
703 | ||
704 | rprefix = rtadv_prefix_lookup(rplist, p); | |
705 | if (rprefix) | |
706 | return rprefix; | |
718e3744 | 707 | |
d62a17ae | 708 | rprefix = rtadv_prefix_new(); |
709 | memcpy(&rprefix->prefix, p, sizeof(struct prefix_ipv6)); | |
710 | listnode_add(rplist, rprefix); | |
718e3744 | 711 | |
d62a17ae | 712 | return rprefix; |
718e3744 | 713 | } |
714 | ||
d62a17ae | 715 | static void rtadv_prefix_set(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 716 | { |
d62a17ae | 717 | struct rtadv_prefix *rprefix; |
718 | ||
719 | rprefix = rtadv_prefix_get(zif->rtadv.AdvPrefixList, &rp->prefix); | |
720 | ||
721 | /* Set parameters. */ | |
722 | rprefix->AdvValidLifetime = rp->AdvValidLifetime; | |
723 | rprefix->AdvPreferredLifetime = rp->AdvPreferredLifetime; | |
724 | rprefix->AdvOnLinkFlag = rp->AdvOnLinkFlag; | |
725 | rprefix->AdvAutonomousFlag = rp->AdvAutonomousFlag; | |
726 | rprefix->AdvRouterAddressFlag = rp->AdvRouterAddressFlag; | |
718e3744 | 727 | } |
728 | ||
d62a17ae | 729 | static int rtadv_prefix_reset(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 730 | { |
d62a17ae | 731 | struct rtadv_prefix *rprefix; |
732 | ||
733 | rprefix = rtadv_prefix_lookup(zif->rtadv.AdvPrefixList, &rp->prefix); | |
734 | if (rprefix != NULL) { | |
735 | listnode_delete(zif->rtadv.AdvPrefixList, (void *)rprefix); | |
736 | rtadv_prefix_free(rprefix); | |
737 | return 1; | |
738 | } else | |
739 | return 0; | |
718e3744 | 740 | } |
741 | ||
d62a17ae | 742 | static void ipv6_nd_suppress_ra_set(struct interface *ifp, |
743 | ipv6_nd_suppress_ra_status status) | |
b6120505 | 744 | { |
d62a17ae | 745 | struct zebra_if *zif; |
746 | struct zebra_vrf *zvrf; | |
747 | struct zebra_ns *zns; | |
748 | ||
749 | zif = ifp->info; | |
750 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
751 | zns = zvrf->zns; | |
752 | ||
753 | if (status == RA_SUPPRESS) { | |
754 | /* RA is currently enabled */ | |
755 | if (zif->rtadv.AdvSendAdvertisements) { | |
756 | zif->rtadv.AdvSendAdvertisements = 0; | |
757 | zif->rtadv.AdvIntervalTimer = 0; | |
758 | zns->rtadv.adv_if_count--; | |
759 | ||
760 | if_leave_all_router(zns->rtadv.sock, ifp); | |
761 | ||
762 | if (zns->rtadv.adv_if_count == 0) | |
763 | rtadv_event(zns, RTADV_STOP, 0); | |
764 | } | |
765 | } else { | |
766 | if (!zif->rtadv.AdvSendAdvertisements) { | |
767 | zif->rtadv.AdvSendAdvertisements = 1; | |
768 | zif->rtadv.AdvIntervalTimer = 0; | |
769 | zns->rtadv.adv_if_count++; | |
770 | ||
771 | if (zif->rtadv.MaxRtrAdvInterval >= 1000) { | |
772 | /* Enable Fast RA only when RA interval is in | |
773 | * secs */ | |
774 | zif->rtadv.inFastRexmit = 1; | |
775 | zif->rtadv.NumFastReXmitsRemain = | |
776 | RTADV_NUM_FAST_REXMITS; | |
777 | } | |
778 | ||
779 | if_join_all_router(zns->rtadv.sock, ifp); | |
780 | ||
781 | if (zns->rtadv.adv_if_count == 1) | |
782 | rtadv_event(zns, RTADV_START, zns->rtadv.sock); | |
783 | } | |
784 | } | |
b6120505 DW |
785 | } |
786 | ||
4a04e5f7 | 787 | /* |
788 | * Handle client (BGP) message to enable or disable IPv6 RA on an interface. | |
789 | * Note that while the client could request RA on an interface on which the | |
790 | * operator has not enabled RA, RA won't be disabled upon client request | |
5c81b96a | 791 | * if the operator has explicitly enabled RA. The enable request can also |
792 | * specify a RA interval (in seconds). | |
4a04e5f7 | 793 | */ |
d62a17ae | 794 | void zebra_interface_radv_set(struct zserv *client, int sock, u_short length, |
795 | struct zebra_vrf *zvrf, int enable) | |
4a04e5f7 | 796 | { |
d62a17ae | 797 | struct stream *s; |
798 | unsigned int ifindex; | |
799 | struct interface *ifp; | |
800 | struct zebra_if *zif; | |
801 | int ra_interval; | |
802 | ||
803 | s = client->ibuf; | |
804 | ||
805 | /* Get interface index and RA interval. */ | |
806 | ifindex = stream_getl(s); | |
807 | ra_interval = stream_getl(s); | |
808 | ||
809 | if (IS_ZEBRA_DEBUG_EVENT) | |
810 | zlog_debug("%u: IF %u RA %s from client %s, interval %ds", | |
811 | zvrf_id(zvrf), ifindex, | |
812 | enable ? "enable" : "disable", | |
813 | zebra_route_string(client->proto), ra_interval); | |
814 | ||
815 | /* Locate interface and check VRF match. */ | |
816 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex); | |
817 | if (!ifp) { | |
818 | zlog_warn("%u: IF %u RA %s client %s - interface unknown", | |
819 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", | |
820 | zebra_route_string(client->proto)); | |
821 | return; | |
822 | } | |
823 | if (ifp->vrf_id != zvrf_id(zvrf)) { | |
824 | zlog_warn("%u: IF %u RA %s client %s - VRF mismatch, IF VRF %u", | |
825 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", | |
826 | zebra_route_string(client->proto), ifp->vrf_id); | |
827 | return; | |
828 | } | |
829 | ||
830 | zif = ifp->info; | |
831 | if (enable) { | |
832 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); | |
833 | if (ra_interval | |
834 | && (ra_interval * 1000) < zif->rtadv.MaxRtrAdvInterval) | |
835 | zif->rtadv.MaxRtrAdvInterval = ra_interval * 1000; | |
836 | } else { | |
837 | if (!zif->rtadv.configured) { | |
838 | zif->rtadv.MaxRtrAdvInterval = | |
839 | RTADV_MAX_RTR_ADV_INTERVAL; | |
840 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); | |
841 | } | |
842 | } | |
4a04e5f7 | 843 | } |
844 | ||
718e3744 | 845 | DEFUN (ipv6_nd_suppress_ra, |
846 | ipv6_nd_suppress_ra_cmd, | |
847 | "ipv6 nd suppress-ra", | |
3e31cded | 848 | "Interface IPv6 config commands\n" |
718e3744 | 849 | "Neighbor discovery\n" |
850 | "Suppress Router Advertisement\n") | |
851 | { | |
d62a17ae | 852 | VTY_DECLVAR_CONTEXT(interface, ifp); |
853 | struct zebra_if *zif = ifp->info; | |
854 | ||
855 | if (if_is_loopback(ifp) | |
856 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
857 | vty_out(vty, | |
858 | "Cannot configure IPv6 Router Advertisements on this interface\n"); | |
859 | return CMD_WARNING_CONFIG_FAILED; | |
860 | } | |
861 | ||
862 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); | |
863 | zif->rtadv.configured = 0; | |
864 | return CMD_SUCCESS; | |
718e3744 | 865 | } |
866 | ||
718e3744 | 867 | DEFUN (no_ipv6_nd_suppress_ra, |
868 | no_ipv6_nd_suppress_ra_cmd, | |
869 | "no ipv6 nd suppress-ra", | |
870 | NO_STR | |
3e31cded | 871 | "Interface IPv6 config commands\n" |
718e3744 | 872 | "Neighbor discovery\n" |
873 | "Suppress Router Advertisement\n") | |
874 | { | |
d62a17ae | 875 | VTY_DECLVAR_CONTEXT(interface, ifp); |
876 | struct zebra_if *zif = ifp->info; | |
877 | ||
878 | if (if_is_loopback(ifp) | |
879 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
880 | vty_out(vty, | |
881 | "Cannot configure IPv6 Router Advertisements on this interface\n"); | |
882 | return CMD_WARNING_CONFIG_FAILED; | |
883 | } | |
884 | ||
885 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); | |
886 | zif->rtadv.configured = 1; | |
887 | return CMD_SUCCESS; | |
718e3744 | 888 | } |
889 | ||
7cee1bb1 | 890 | DEFUN (ipv6_nd_ra_interval_msec, |
891 | ipv6_nd_ra_interval_msec_cmd, | |
6147e2c6 | 892 | "ipv6 nd ra-interval msec (70-1800000)", |
7cee1bb1 | 893 | "Interface IPv6 config commands\n" |
894 | "Neighbor discovery\n" | |
895 | "Router Advertisement interval\n" | |
3a2d747c | 896 | "Router Advertisement interval in milliseconds\n" |
7cee1bb1 | 897 | "Router Advertisement interval in milliseconds\n") |
898 | { | |
d62a17ae | 899 | int idx_number = 4; |
900 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
901 | unsigned interval; | |
902 | struct zebra_if *zif = ifp->info; | |
903 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); | |
904 | struct zebra_ns *zns; | |
905 | ||
906 | zns = zvrf->zns; | |
907 | interval = strtoul(argv[idx_number]->arg, NULL, 10); | |
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!\n"); | |
912 | return CMD_WARNING_CONFIG_FAILED; | |
913 | } | |
914 | ||
915 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
916 | zns->rtadv.adv_msec_if_count--; | |
917 | ||
918 | if (interval % 1000) | |
919 | zns->rtadv.adv_msec_if_count++; | |
920 | ||
921 | zif->rtadv.MaxRtrAdvInterval = interval; | |
922 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
923 | zif->rtadv.AdvIntervalTimer = 0; | |
924 | ||
925 | return CMD_SUCCESS; | |
7cee1bb1 | 926 | } |
927 | ||
718e3744 | 928 | DEFUN (ipv6_nd_ra_interval, |
929 | ipv6_nd_ra_interval_cmd, | |
6147e2c6 | 930 | "ipv6 nd ra-interval (1-1800)", |
3e31cded | 931 | "Interface IPv6 config commands\n" |
718e3744 | 932 | "Neighbor discovery\n" |
933 | "Router Advertisement interval\n" | |
934 | "Router Advertisement interval in seconds\n") | |
935 | { | |
d62a17ae | 936 | int idx_number = 3; |
937 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
938 | unsigned interval; | |
939 | struct zebra_if *zif = ifp->info; | |
940 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); | |
941 | struct zebra_ns *zns; | |
942 | ||
943 | zns = zvrf->zns; | |
944 | interval = strtoul(argv[idx_number]->arg, NULL, 10); | |
945 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
946 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime)) { | |
947 | vty_out(vty, | |
948 | "This ra-interval would conflict with configured ra-lifetime!\n"); | |
949 | return CMD_WARNING_CONFIG_FAILED; | |
950 | } | |
951 | ||
952 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
953 | zns->rtadv.adv_msec_if_count--; | |
954 | ||
955 | /* convert to milliseconds */ | |
956 | interval = interval * 1000; | |
957 | ||
958 | zif->rtadv.MaxRtrAdvInterval = interval; | |
959 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
960 | zif->rtadv.AdvIntervalTimer = 0; | |
961 | ||
962 | return CMD_SUCCESS; | |
718e3744 | 963 | } |
964 | ||
965 | DEFUN (no_ipv6_nd_ra_interval, | |
966 | no_ipv6_nd_ra_interval_cmd, | |
34ccea1e | 967 | "no ipv6 nd ra-interval [<(1-1800)|msec (1-1800000)>]", |
718e3744 | 968 | NO_STR |
3e31cded | 969 | "Interface IPv6 config commands\n" |
718e3744 | 970 | "Neighbor discovery\n" |
34ccea1e QY |
971 | "Router Advertisement interval\n" |
972 | "Router Advertisement interval in seconds\n" | |
973 | "Specify millisecond router advertisement interval\n" | |
974 | "Router Advertisement interval in milliseconds\n") | |
718e3744 | 975 | { |
d62a17ae | 976 | VTY_DECLVAR_CONTEXT(interface, ifp); |
977 | struct zebra_if *zif = ifp->info; | |
978 | struct zebra_vrf *zvrf; | |
979 | struct zebra_ns *zns; | |
980 | ||
981 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
982 | zns = zvrf->zns; | |
983 | ||
984 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
985 | zns->rtadv.adv_msec_if_count--; | |
986 | ||
987 | zif->rtadv.MaxRtrAdvInterval = RTADV_MAX_RTR_ADV_INTERVAL; | |
988 | zif->rtadv.MinRtrAdvInterval = RTADV_MIN_RTR_ADV_INTERVAL; | |
989 | zif->rtadv.AdvIntervalTimer = zif->rtadv.MaxRtrAdvInterval; | |
990 | ||
991 | return CMD_SUCCESS; | |
718e3744 | 992 | } |
993 | ||
994 | DEFUN (ipv6_nd_ra_lifetime, | |
995 | ipv6_nd_ra_lifetime_cmd, | |
6147e2c6 | 996 | "ipv6 nd ra-lifetime (0-9000)", |
3e31cded | 997 | "Interface IPv6 config commands\n" |
718e3744 | 998 | "Neighbor discovery\n" |
999 | "Router lifetime\n" | |
4afa50b3 | 1000 | "Router lifetime in seconds (0 stands for a non-default gw)\n") |
718e3744 | 1001 | { |
d62a17ae | 1002 | int idx_number = 3; |
1003 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1004 | struct zebra_if *zif = ifp->info; | |
1005 | int lifetime; | |
1006 | ||
1007 | lifetime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1008 | ||
1009 | /* The value to be placed in the Router Lifetime field | |
1010 | * of Router Advertisements sent from the interface, | |
1011 | * in seconds. MUST be either zero or between | |
1012 | * MaxRtrAdvInterval and 9000 seconds. -- RFC4861, 6.2.1 */ | |
1013 | if ((lifetime != 0 && lifetime * 1000 < zif->rtadv.MaxRtrAdvInterval)) { | |
1014 | vty_out(vty, | |
1015 | "This ra-lifetime would conflict with configured ra-interval\n"); | |
1016 | return CMD_WARNING_CONFIG_FAILED; | |
1017 | } | |
1018 | ||
1019 | zif->rtadv.AdvDefaultLifetime = lifetime; | |
1020 | ||
1021 | return CMD_SUCCESS; | |
718e3744 | 1022 | } |
1023 | ||
1024 | DEFUN (no_ipv6_nd_ra_lifetime, | |
1025 | no_ipv6_nd_ra_lifetime_cmd, | |
34ccea1e | 1026 | "no ipv6 nd ra-lifetime [(0-9000)]", |
718e3744 | 1027 | NO_STR |
3e31cded | 1028 | "Interface IPv6 config commands\n" |
718e3744 | 1029 | "Neighbor discovery\n" |
34ccea1e QY |
1030 | "Router lifetime\n" |
1031 | "Router lifetime in seconds (0 stands for a non-default gw)\n") | |
718e3744 | 1032 | { |
d62a17ae | 1033 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1034 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1035 | |
d62a17ae | 1036 | zif->rtadv.AdvDefaultLifetime = -1; |
718e3744 | 1037 | |
d62a17ae | 1038 | return CMD_SUCCESS; |
718e3744 | 1039 | } |
1040 | ||
1041 | DEFUN (ipv6_nd_reachable_time, | |
1042 | ipv6_nd_reachable_time_cmd, | |
6147e2c6 | 1043 | "ipv6 nd reachable-time (1-3600000)", |
3e31cded | 1044 | "Interface IPv6 config commands\n" |
718e3744 | 1045 | "Neighbor discovery\n" |
1046 | "Reachable time\n" | |
1047 | "Reachable time in milliseconds\n") | |
1048 | { | |
d62a17ae | 1049 | int idx_number = 3; |
1050 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1051 | struct zebra_if *zif = ifp->info; | |
1052 | zif->rtadv.AdvReachableTime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1053 | return CMD_SUCCESS; | |
718e3744 | 1054 | } |
1055 | ||
1056 | DEFUN (no_ipv6_nd_reachable_time, | |
1057 | no_ipv6_nd_reachable_time_cmd, | |
34ccea1e | 1058 | "no ipv6 nd reachable-time [(1-3600000)]", |
718e3744 | 1059 | NO_STR |
3e31cded | 1060 | "Interface IPv6 config commands\n" |
718e3744 | 1061 | "Neighbor discovery\n" |
34ccea1e QY |
1062 | "Reachable time\n" |
1063 | "Reachable time in milliseconds\n") | |
718e3744 | 1064 | { |
d62a17ae | 1065 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1066 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1067 | |
d62a17ae | 1068 | zif->rtadv.AdvReachableTime = 0; |
718e3744 | 1069 | |
d62a17ae | 1070 | return CMD_SUCCESS; |
718e3744 | 1071 | } |
1072 | ||
7cee1bb1 | 1073 | DEFUN (ipv6_nd_homeagent_preference, |
1074 | ipv6_nd_homeagent_preference_cmd, | |
6147e2c6 | 1075 | "ipv6 nd home-agent-preference (0-65535)", |
7cee1bb1 | 1076 | "Interface IPv6 config commands\n" |
1077 | "Neighbor discovery\n" | |
1078 | "Home Agent preference\n" | |
4afa50b3 | 1079 | "preference value (default is 0, least preferred)\n") |
7cee1bb1 | 1080 | { |
d62a17ae | 1081 | int idx_number = 3; |
1082 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1083 | struct zebra_if *zif = ifp->info; | |
1084 | zif->rtadv.HomeAgentPreference = | |
1085 | strtoul(argv[idx_number]->arg, NULL, 10); | |
1086 | return CMD_SUCCESS; | |
7cee1bb1 | 1087 | } |
1088 | ||
1089 | DEFUN (no_ipv6_nd_homeagent_preference, | |
1090 | no_ipv6_nd_homeagent_preference_cmd, | |
34ccea1e | 1091 | "no ipv6 nd home-agent-preference [(0-65535)]", |
7cee1bb1 | 1092 | NO_STR |
1093 | "Interface IPv6 config commands\n" | |
1094 | "Neighbor discovery\n" | |
34ccea1e QY |
1095 | "Home Agent preference\n" |
1096 | "preference value (default is 0, least preferred)\n") | |
7cee1bb1 | 1097 | { |
d62a17ae | 1098 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1099 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1100 | |
d62a17ae | 1101 | zif->rtadv.HomeAgentPreference = 0; |
7cee1bb1 | 1102 | |
d62a17ae | 1103 | return CMD_SUCCESS; |
7cee1bb1 | 1104 | } |
1105 | ||
1106 | DEFUN (ipv6_nd_homeagent_lifetime, | |
1107 | ipv6_nd_homeagent_lifetime_cmd, | |
6147e2c6 | 1108 | "ipv6 nd home-agent-lifetime (0-65520)", |
7cee1bb1 | 1109 | "Interface IPv6 config commands\n" |
1110 | "Neighbor discovery\n" | |
1111 | "Home Agent lifetime\n" | |
4afa50b3 | 1112 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") |
7cee1bb1 | 1113 | { |
d62a17ae | 1114 | int idx_number = 3; |
1115 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1116 | struct zebra_if *zif = ifp->info; | |
1117 | zif->rtadv.HomeAgentLifetime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1118 | return CMD_SUCCESS; | |
7cee1bb1 | 1119 | } |
1120 | ||
1121 | DEFUN (no_ipv6_nd_homeagent_lifetime, | |
1122 | no_ipv6_nd_homeagent_lifetime_cmd, | |
34ccea1e | 1123 | "no ipv6 nd home-agent-lifetime [(0-65520)]", |
7cee1bb1 | 1124 | NO_STR |
1125 | "Interface IPv6 config commands\n" | |
1126 | "Neighbor discovery\n" | |
34ccea1e QY |
1127 | "Home Agent lifetime\n" |
1128 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") | |
7cee1bb1 | 1129 | { |
d62a17ae | 1130 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1131 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1132 | |
d62a17ae | 1133 | zif->rtadv.HomeAgentLifetime = -1; |
7cee1bb1 | 1134 | |
d62a17ae | 1135 | return CMD_SUCCESS; |
7cee1bb1 | 1136 | } |
1137 | ||
718e3744 | 1138 | DEFUN (ipv6_nd_managed_config_flag, |
1139 | ipv6_nd_managed_config_flag_cmd, | |
1140 | "ipv6 nd managed-config-flag", | |
3e31cded | 1141 | "Interface IPv6 config commands\n" |
718e3744 | 1142 | "Neighbor discovery\n" |
1143 | "Managed address configuration flag\n") | |
1144 | { | |
d62a17ae | 1145 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1146 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1147 | |
d62a17ae | 1148 | zif->rtadv.AdvManagedFlag = 1; |
718e3744 | 1149 | |
d62a17ae | 1150 | return CMD_SUCCESS; |
718e3744 | 1151 | } |
1152 | ||
1153 | DEFUN (no_ipv6_nd_managed_config_flag, | |
1154 | no_ipv6_nd_managed_config_flag_cmd, | |
1155 | "no ipv6 nd managed-config-flag", | |
1156 | NO_STR | |
3e31cded | 1157 | "Interface IPv6 config commands\n" |
718e3744 | 1158 | "Neighbor discovery\n" |
1159 | "Managed address configuration flag\n") | |
1160 | { | |
d62a17ae | 1161 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1162 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1163 | |
d62a17ae | 1164 | zif->rtadv.AdvManagedFlag = 0; |
718e3744 | 1165 | |
d62a17ae | 1166 | return CMD_SUCCESS; |
718e3744 | 1167 | } |
1168 | ||
7cee1bb1 | 1169 | DEFUN (ipv6_nd_homeagent_config_flag, |
1170 | ipv6_nd_homeagent_config_flag_cmd, | |
1171 | "ipv6 nd home-agent-config-flag", | |
1172 | "Interface IPv6 config commands\n" | |
1173 | "Neighbor discovery\n" | |
1174 | "Home Agent configuration flag\n") | |
1175 | { | |
d62a17ae | 1176 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1177 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1178 | |
d62a17ae | 1179 | zif->rtadv.AdvHomeAgentFlag = 1; |
7cee1bb1 | 1180 | |
d62a17ae | 1181 | return CMD_SUCCESS; |
7cee1bb1 | 1182 | } |
1183 | ||
1184 | DEFUN (no_ipv6_nd_homeagent_config_flag, | |
1185 | no_ipv6_nd_homeagent_config_flag_cmd, | |
1186 | "no ipv6 nd home-agent-config-flag", | |
1187 | NO_STR | |
1188 | "Interface IPv6 config commands\n" | |
1189 | "Neighbor discovery\n" | |
1190 | "Home Agent configuration flag\n") | |
1191 | { | |
d62a17ae | 1192 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1193 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1194 | |
d62a17ae | 1195 | zif->rtadv.AdvHomeAgentFlag = 0; |
7cee1bb1 | 1196 | |
d62a17ae | 1197 | return CMD_SUCCESS; |
7cee1bb1 | 1198 | } |
1199 | ||
1200 | DEFUN (ipv6_nd_adv_interval_config_option, | |
1201 | ipv6_nd_adv_interval_config_option_cmd, | |
1202 | "ipv6 nd adv-interval-option", | |
1203 | "Interface IPv6 config commands\n" | |
1204 | "Neighbor discovery\n" | |
1205 | "Advertisement Interval Option\n") | |
1206 | { | |
d62a17ae | 1207 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1208 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1209 | |
d62a17ae | 1210 | zif->rtadv.AdvIntervalOption = 1; |
7cee1bb1 | 1211 | |
d62a17ae | 1212 | return CMD_SUCCESS; |
7cee1bb1 | 1213 | } |
1214 | ||
1215 | DEFUN (no_ipv6_nd_adv_interval_config_option, | |
1216 | no_ipv6_nd_adv_interval_config_option_cmd, | |
1217 | "no ipv6 nd adv-interval-option", | |
1218 | NO_STR | |
1219 | "Interface IPv6 config commands\n" | |
1220 | "Neighbor discovery\n" | |
1221 | "Advertisement Interval Option\n") | |
1222 | { | |
d62a17ae | 1223 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1224 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1225 | |
d62a17ae | 1226 | zif->rtadv.AdvIntervalOption = 0; |
7cee1bb1 | 1227 | |
d62a17ae | 1228 | return CMD_SUCCESS; |
7cee1bb1 | 1229 | } |
1230 | ||
718e3744 | 1231 | DEFUN (ipv6_nd_other_config_flag, |
1232 | ipv6_nd_other_config_flag_cmd, | |
1233 | "ipv6 nd other-config-flag", | |
3e31cded | 1234 | "Interface IPv6 config commands\n" |
718e3744 | 1235 | "Neighbor discovery\n" |
1236 | "Other statefull configuration flag\n") | |
1237 | { | |
d62a17ae | 1238 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1239 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1240 | |
d62a17ae | 1241 | zif->rtadv.AdvOtherConfigFlag = 1; |
718e3744 | 1242 | |
d62a17ae | 1243 | return CMD_SUCCESS; |
718e3744 | 1244 | } |
1245 | ||
1246 | DEFUN (no_ipv6_nd_other_config_flag, | |
1247 | no_ipv6_nd_other_config_flag_cmd, | |
1248 | "no ipv6 nd other-config-flag", | |
1249 | NO_STR | |
3e31cded | 1250 | "Interface IPv6 config commands\n" |
718e3744 | 1251 | "Neighbor discovery\n" |
1252 | "Other statefull configuration flag\n") | |
1253 | { | |
d62a17ae | 1254 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1255 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1256 | |
d62a17ae | 1257 | zif->rtadv.AdvOtherConfigFlag = 0; |
718e3744 | 1258 | |
d62a17ae | 1259 | return CMD_SUCCESS; |
718e3744 | 1260 | } |
1261 | ||
3e31cded | 1262 | DEFUN (ipv6_nd_prefix, |
1263 | ipv6_nd_prefix_cmd, | |
34ccea1e | 1264 | "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 | 1265 | "Interface IPv6 config commands\n" |
718e3744 | 1266 | "Neighbor discovery\n" |
1267 | "Prefix information\n" | |
1268 | "IPv6 prefix\n" | |
1269 | "Valid lifetime in seconds\n" | |
3e31cded | 1270 | "Infinite valid lifetime\n" |
718e3744 | 1271 | "Preferred lifetime in seconds\n" |
3e31cded | 1272 | "Infinite preferred lifetime\n" |
34ccea1e | 1273 | "Set Router Address flag\n" |
3e31cded | 1274 | "Do not use prefix for onlink determination\n" |
7cee1bb1 | 1275 | "Do not use prefix for autoconfiguration\n" |
34ccea1e QY |
1276 | "Do not use prefix for autoconfiguration\n" |
1277 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1278 | { |
d62a17ae | 1279 | /* prelude */ |
1280 | char *prefix = argv[3]->arg; | |
9d303b37 DL |
1281 | int lifetimes = (argc > 4) && (argv[4]->type == RANGE_TKN |
1282 | || strmatch(argv[4]->text, "infinite")); | |
d62a17ae | 1283 | int routeropts = lifetimes ? argc > 6 : argc > 4; |
1284 | ||
1285 | int idx_routeropts = routeropts ? (lifetimes ? 6 : 4) : 0; | |
1286 | ||
1287 | char *lifetime = NULL, *preflifetime = NULL; | |
1288 | int routeraddr = 0, offlink = 0, noautoconf = 0; | |
1289 | if (lifetimes) { | |
1290 | lifetime = argv[4]->type == RANGE_TKN ? argv[4]->arg | |
1291 | : argv[4]->text; | |
1292 | preflifetime = argv[5]->type == RANGE_TKN ? argv[5]->arg | |
1293 | : argv[5]->text; | |
1294 | } | |
1295 | if (routeropts) { | |
1296 | routeraddr = | |
1297 | strmatch(argv[idx_routeropts]->text, "router-address"); | |
1298 | if (!routeraddr) { | |
1299 | offlink = (argc > idx_routeropts + 1 | |
1300 | || strmatch(argv[idx_routeropts]->text, | |
1301 | "off-link")); | |
1302 | noautoconf = (argc > idx_routeropts + 1 | |
1303 | || strmatch(argv[idx_routeropts]->text, | |
1304 | "no-autoconfig")); | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | /* business */ | |
1309 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1310 | struct zebra_if *zebra_if = ifp->info; | |
1311 | int ret; | |
1312 | struct rtadv_prefix rp; | |
1313 | ||
1314 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1315 | if (!ret) { | |
1316 | vty_out(vty, "Malformed IPv6 prefix\n"); | |
1317 | return CMD_WARNING_CONFIG_FAILED; | |
1318 | } | |
1319 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1320 | rp.AdvOnLinkFlag = !offlink; | |
1321 | rp.AdvAutonomousFlag = !noautoconf; | |
1322 | rp.AdvRouterAddressFlag = routeraddr; | |
1323 | rp.AdvValidLifetime = RTADV_VALID_LIFETIME; | |
1324 | rp.AdvPreferredLifetime = RTADV_PREFERRED_LIFETIME; | |
1325 | ||
1326 | if (lifetimes) { | |
1327 | rp.AdvValidLifetime = strmatch(lifetime, "infinite") | |
1328 | ? UINT32_MAX | |
1329 | : strtoll(lifetime, NULL, 10); | |
1330 | rp.AdvPreferredLifetime = | |
1331 | strmatch(preflifetime, "infinite") | |
1332 | ? UINT32_MAX | |
1333 | : strtoll(preflifetime, NULL, 10); | |
1334 | if (rp.AdvPreferredLifetime > rp.AdvValidLifetime) { | |
1335 | vty_out(vty, "Invalid preferred lifetime\n"); | |
1336 | return CMD_WARNING_CONFIG_FAILED; | |
1337 | } | |
1338 | } | |
1339 | ||
1340 | rtadv_prefix_set(zebra_if, &rp); | |
1341 | ||
1342 | return CMD_SUCCESS; | |
718e3744 | 1343 | } |
1344 | ||
3e31cded | 1345 | DEFUN (no_ipv6_nd_prefix, |
1346 | no_ipv6_nd_prefix_cmd, | |
34ccea1e QY |
1347 | "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]>]", |
1348 | NO_STR | |
3e31cded | 1349 | "Interface IPv6 config commands\n" |
718e3744 | 1350 | "Neighbor discovery\n" |
1351 | "Prefix information\n" | |
34ccea1e QY |
1352 | "IPv6 prefix\n" |
1353 | "Valid lifetime in seconds\n" | |
1354 | "Infinite valid lifetime\n" | |
1355 | "Preferred lifetime in seconds\n" | |
1356 | "Infinite preferred lifetime\n" | |
1357 | "Set Router Address flag\n" | |
1358 | "Do not use prefix for onlink determination\n" | |
1359 | "Do not use prefix for autoconfiguration\n" | |
1360 | "Do not use prefix for autoconfiguration\n" | |
1361 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1362 | { |
d62a17ae | 1363 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1364 | struct zebra_if *zebra_if = ifp->info; | |
1365 | int ret; | |
1366 | struct rtadv_prefix rp; | |
1367 | char *prefix = argv[4]->arg; | |
1368 | ||
1369 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1370 | if (!ret) { | |
1371 | vty_out(vty, "Malformed IPv6 prefix\n"); | |
1372 | return CMD_WARNING_CONFIG_FAILED; | |
1373 | } | |
1374 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1375 | ||
1376 | ret = rtadv_prefix_reset(zebra_if, &rp); | |
1377 | if (!ret) { | |
1378 | vty_out(vty, "Non-existant IPv6 prefix\n"); | |
1379 | return CMD_WARNING_CONFIG_FAILED; | |
1380 | } | |
1381 | ||
1382 | return CMD_SUCCESS; | |
718e3744 | 1383 | } |
b60668d0 CC |
1384 | |
1385 | DEFUN (ipv6_nd_router_preference, | |
1386 | ipv6_nd_router_preference_cmd, | |
6147e2c6 | 1387 | "ipv6 nd router-preference <high|medium|low>", |
b60668d0 CC |
1388 | "Interface IPv6 config commands\n" |
1389 | "Neighbor discovery\n" | |
1390 | "Default router preference\n" | |
1391 | "High default router preference\n" | |
58f1b7cc DS |
1392 | "Medium default router preference (default)\n" |
1393 | "Low default router preference\n") | |
b60668d0 | 1394 | { |
d62a17ae | 1395 | int idx_high_medium_low = 3; |
1396 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1397 | struct zebra_if *zif = ifp->info; | |
1398 | int i = 0; | |
1399 | ||
1400 | while (0 != rtadv_pref_strs[i]) { | |
1401 | if (strncmp(argv[idx_high_medium_low]->arg, rtadv_pref_strs[i], | |
1402 | 1) | |
1403 | == 0) { | |
1404 | zif->rtadv.DefaultPreference = i; | |
1405 | return CMD_SUCCESS; | |
1406 | } | |
1407 | i++; | |
b60668d0 | 1408 | } |
b60668d0 | 1409 | |
d62a17ae | 1410 | return CMD_ERR_NO_MATCH; |
b60668d0 CC |
1411 | } |
1412 | ||
1413 | DEFUN (no_ipv6_nd_router_preference, | |
1414 | no_ipv6_nd_router_preference_cmd, | |
34ccea1e | 1415 | "no ipv6 nd router-preference [<high|medium|low>]", |
b60668d0 CC |
1416 | NO_STR |
1417 | "Interface IPv6 config commands\n" | |
1418 | "Neighbor discovery\n" | |
34ccea1e QY |
1419 | "Default router preference\n" |
1420 | "High default router preference\n" | |
1421 | "Medium default router preference (default)\n" | |
1422 | "Low default router preference\n") | |
b60668d0 | 1423 | { |
d62a17ae | 1424 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1425 | struct zebra_if *zif = ifp->info; | |
b60668d0 | 1426 | |
d62a17ae | 1427 | zif->rtadv.DefaultPreference = |
1428 | RTADV_PREF_MEDIUM; /* Default per RFC4191. */ | |
b60668d0 | 1429 | |
d62a17ae | 1430 | return CMD_SUCCESS; |
b60668d0 CC |
1431 | } |
1432 | ||
6ae93c05 DO |
1433 | DEFUN (ipv6_nd_mtu, |
1434 | ipv6_nd_mtu_cmd, | |
6147e2c6 | 1435 | "ipv6 nd mtu (1-65535)", |
6ae93c05 DO |
1436 | "Interface IPv6 config commands\n" |
1437 | "Neighbor discovery\n" | |
1438 | "Advertised MTU\n" | |
1439 | "MTU in bytes\n") | |
1440 | { | |
d62a17ae | 1441 | int idx_number = 3; |
1442 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1443 | struct zebra_if *zif = ifp->info; | |
1444 | zif->rtadv.AdvLinkMTU = strtoul(argv[idx_number]->arg, NULL, 10); | |
1445 | return CMD_SUCCESS; | |
6ae93c05 DO |
1446 | } |
1447 | ||
1448 | DEFUN (no_ipv6_nd_mtu, | |
1449 | no_ipv6_nd_mtu_cmd, | |
34ccea1e | 1450 | "no ipv6 nd mtu [(1-65535)]", |
6ae93c05 DO |
1451 | NO_STR |
1452 | "Interface IPv6 config commands\n" | |
1453 | "Neighbor discovery\n" | |
34ccea1e QY |
1454 | "Advertised MTU\n" |
1455 | "MTU in bytes\n") | |
6ae93c05 | 1456 | { |
d62a17ae | 1457 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1458 | struct zebra_if *zif = ifp->info; | |
1459 | zif->rtadv.AdvLinkMTU = 0; | |
1460 | return CMD_SUCCESS; | |
6ae93c05 DO |
1461 | } |
1462 | ||
2eb27eec DL |
1463 | /* Dump interface ND information to vty. */ |
1464 | static int nd_dump_vty(struct vty *vty, struct interface *ifp) | |
1465 | { | |
1466 | struct zebra_if *zif; | |
1467 | struct rtadvconf *rtadv; | |
1468 | int interval; | |
1469 | ||
1470 | zif = (struct zebra_if *)ifp->info; | |
1471 | rtadv = &zif->rtadv; | |
1472 | ||
1473 | if (rtadv->AdvSendAdvertisements) { | |
1474 | vty_out(vty, | |
1475 | " ND advertised reachable time is %d milliseconds\n", | |
1476 | rtadv->AdvReachableTime); | |
1477 | vty_out(vty, | |
1478 | " ND advertised retransmit interval is %d milliseconds\n", | |
1479 | rtadv->AdvRetransTimer); | |
1480 | vty_out(vty, " ND router advertisements sent: %d rcvd: %d\n", | |
1481 | zif->ra_sent, zif->ra_rcvd); | |
1482 | interval = rtadv->MaxRtrAdvInterval; | |
1483 | if (interval % 1000) | |
1484 | vty_out(vty, | |
1485 | " ND router advertisements are sent every " | |
1486 | "%d milliseconds\n", | |
1487 | interval); | |
1488 | else | |
1489 | vty_out(vty, | |
1490 | " ND router advertisements are sent every " | |
1491 | "%d seconds\n", | |
1492 | interval / 1000); | |
1493 | if (rtadv->AdvDefaultLifetime != -1) | |
1494 | vty_out(vty, | |
1495 | " ND router advertisements live for %d seconds\n", | |
1496 | rtadv->AdvDefaultLifetime); | |
1497 | else | |
1498 | vty_out(vty, | |
1499 | " ND router advertisements lifetime tracks ra-interval\n"); | |
1500 | vty_out(vty, | |
1501 | " ND router advertisement default router preference is " | |
1502 | "%s\n", | |
1503 | rtadv_pref_strs[rtadv->DefaultPreference]); | |
1504 | if (rtadv->AdvManagedFlag) | |
1505 | vty_out(vty, | |
1506 | " Hosts use DHCP to obtain routable addresses.\n"); | |
1507 | else | |
1508 | vty_out(vty, | |
1509 | " Hosts use stateless autoconfig for addresses.\n"); | |
1510 | if (rtadv->AdvHomeAgentFlag) { | |
1511 | vty_out(vty, | |
1512 | " ND router advertisements with Home Agent flag bit set.\n"); | |
1513 | if (rtadv->HomeAgentLifetime != -1) | |
1514 | vty_out(vty, | |
1515 | " Home Agent lifetime is %u seconds\n", | |
1516 | rtadv->HomeAgentLifetime); | |
1517 | else | |
1518 | vty_out(vty, | |
1519 | " Home Agent lifetime tracks ra-lifetime\n"); | |
1520 | vty_out(vty, " Home Agent preference is %u\n", | |
1521 | rtadv->HomeAgentPreference); | |
1522 | } | |
1523 | if (rtadv->AdvIntervalOption) | |
1524 | vty_out(vty, | |
1525 | " ND router advertisements with Adv. Interval option.\n"); | |
1526 | } | |
1527 | return 0; | |
1528 | } | |
1529 | ||
6ae93c05 | 1530 | |
718e3744 | 1531 | /* Write configuration about router advertisement. */ |
2eb27eec | 1532 | static int rtadv_config_write(struct vty *vty, struct interface *ifp) |
718e3744 | 1533 | { |
d62a17ae | 1534 | struct zebra_if *zif; |
1535 | struct listnode *node; | |
1536 | struct rtadv_prefix *rprefix; | |
1537 | char buf[PREFIX_STRLEN]; | |
1538 | int interval; | |
1539 | ||
1540 | zif = ifp->info; | |
1541 | ||
1542 | if (!(if_is_loopback(ifp) | |
1543 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK))) { | |
1544 | if (zif->rtadv.AdvSendAdvertisements) | |
1545 | vty_out(vty, " no ipv6 nd suppress-ra\n"); | |
1546 | } | |
1547 | ||
1548 | interval = zif->rtadv.MaxRtrAdvInterval; | |
1549 | if (interval % 1000) | |
1550 | vty_out(vty, " ipv6 nd ra-interval msec %d\n", interval); | |
1551 | else if (interval != RTADV_MAX_RTR_ADV_INTERVAL) | |
1552 | vty_out(vty, " ipv6 nd ra-interval %d\n", interval / 1000); | |
1553 | ||
1554 | if (zif->rtadv.AdvIntervalOption) | |
1555 | vty_out(vty, " ipv6 nd adv-interval-option\n"); | |
1556 | ||
1557 | if (zif->rtadv.AdvDefaultLifetime != -1) | |
1558 | vty_out(vty, " ipv6 nd ra-lifetime %d\n", | |
1559 | zif->rtadv.AdvDefaultLifetime); | |
1560 | ||
1561 | if (zif->rtadv.HomeAgentPreference) | |
1562 | vty_out(vty, " ipv6 nd home-agent-preference %u\n", | |
1563 | zif->rtadv.HomeAgentPreference); | |
1564 | ||
1565 | if (zif->rtadv.HomeAgentLifetime != -1) | |
1566 | vty_out(vty, " ipv6 nd home-agent-lifetime %u\n", | |
1567 | zif->rtadv.HomeAgentLifetime); | |
1568 | ||
1569 | if (zif->rtadv.AdvHomeAgentFlag) | |
1570 | vty_out(vty, " ipv6 nd home-agent-config-flag\n"); | |
1571 | ||
1572 | if (zif->rtadv.AdvReachableTime) | |
1573 | vty_out(vty, " ipv6 nd reachable-time %d\n", | |
1574 | zif->rtadv.AdvReachableTime); | |
1575 | ||
1576 | if (zif->rtadv.AdvManagedFlag) | |
1577 | vty_out(vty, " ipv6 nd managed-config-flag\n"); | |
1578 | ||
1579 | if (zif->rtadv.AdvOtherConfigFlag) | |
1580 | vty_out(vty, " ipv6 nd other-config-flag\n"); | |
1581 | ||
1582 | if (zif->rtadv.DefaultPreference != RTADV_PREF_MEDIUM) | |
1583 | vty_out(vty, " ipv6 nd router-preference %s\n", | |
1584 | rtadv_pref_strs[zif->rtadv.DefaultPreference]); | |
1585 | ||
1586 | if (zif->rtadv.AdvLinkMTU) | |
1587 | vty_out(vty, " ipv6 nd mtu %d\n", zif->rtadv.AdvLinkMTU); | |
1588 | ||
1589 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
1590 | vty_out(vty, " ipv6 nd prefix %s", | |
1591 | prefix2str(&rprefix->prefix, buf, sizeof(buf))); | |
1592 | if ((rprefix->AdvValidLifetime != RTADV_VALID_LIFETIME) | |
1593 | || (rprefix->AdvPreferredLifetime | |
1594 | != RTADV_PREFERRED_LIFETIME)) { | |
1595 | if (rprefix->AdvValidLifetime == UINT32_MAX) | |
1596 | vty_out(vty, " infinite"); | |
1597 | else | |
1598 | vty_out(vty, " %u", rprefix->AdvValidLifetime); | |
1599 | if (rprefix->AdvPreferredLifetime == UINT32_MAX) | |
1600 | vty_out(vty, " infinite"); | |
1601 | else | |
1602 | vty_out(vty, " %u", | |
1603 | rprefix->AdvPreferredLifetime); | |
1604 | } | |
1605 | if (!rprefix->AdvOnLinkFlag) | |
1606 | vty_out(vty, " off-link"); | |
1607 | if (!rprefix->AdvAutonomousFlag) | |
1608 | vty_out(vty, " no-autoconfig"); | |
1609 | if (rprefix->AdvRouterAddressFlag) | |
1610 | vty_out(vty, " router-address"); | |
1611 | vty_out(vty, "\n"); | |
3e31cded | 1612 | } |
2eb27eec | 1613 | return 0; |
718e3744 | 1614 | } |
1615 | ||
718e3744 | 1616 | |
d62a17ae | 1617 | static void rtadv_event(struct zebra_ns *zns, enum rtadv_event event, int val) |
718e3744 | 1618 | { |
d62a17ae | 1619 | struct rtadv *rtadv = &zns->rtadv; |
1620 | ||
1621 | switch (event) { | |
1622 | case RTADV_START: | |
1623 | thread_add_read(zebrad.master, rtadv_read, zns, val, | |
1624 | &rtadv->ra_read); | |
1625 | thread_add_event(zebrad.master, rtadv_timer, zns, 0, | |
1626 | &rtadv->ra_timer); | |
1627 | break; | |
1628 | case RTADV_STOP: | |
1629 | if (rtadv->ra_timer) { | |
1630 | thread_cancel(rtadv->ra_timer); | |
1631 | rtadv->ra_timer = NULL; | |
1632 | } | |
1633 | if (rtadv->ra_read) { | |
1634 | thread_cancel(rtadv->ra_read); | |
1635 | rtadv->ra_read = NULL; | |
1636 | } | |
1637 | break; | |
1638 | case RTADV_TIMER: | |
1639 | thread_add_timer(zebrad.master, rtadv_timer, zns, val, | |
1640 | &rtadv->ra_timer); | |
1641 | break; | |
1642 | case RTADV_TIMER_MSEC: | |
1643 | thread_add_timer_msec(zebrad.master, rtadv_timer, zns, val, | |
1644 | &rtadv->ra_timer); | |
1645 | break; | |
1646 | case RTADV_READ: | |
1647 | thread_add_read(zebrad.master, rtadv_read, zns, val, | |
1648 | &rtadv->ra_read); | |
1649 | break; | |
1650 | default: | |
1651 | break; | |
718e3744 | 1652 | } |
d62a17ae | 1653 | return; |
718e3744 | 1654 | } |
1655 | ||
d62a17ae | 1656 | void rtadv_init(struct zebra_ns *zns) |
718e3744 | 1657 | { |
d62a17ae | 1658 | zns->rtadv.sock = rtadv_make_socket(); |
cd80d74f | 1659 | } |
718e3744 | 1660 | |
d62a17ae | 1661 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 1662 | { |
d62a17ae | 1663 | rtadv_event(zns, RTADV_STOP, 0); |
1664 | if (zns->rtadv.sock >= 0) { | |
1665 | close(zns->rtadv.sock); | |
1666 | zns->rtadv.sock = -1; | |
1667 | } | |
1668 | ||
1669 | zns->rtadv.adv_if_count = 0; | |
1670 | zns->rtadv.adv_msec_if_count = 0; | |
cd80d74f | 1671 | } |
718e3744 | 1672 | |
d62a17ae | 1673 | void rtadv_cmd_init(void) |
cd80d74f | 1674 | { |
2eb27eec DL |
1675 | hook_register(zebra_if_extra_info, nd_dump_vty); |
1676 | hook_register(zebra_if_config_wr, rtadv_config_write); | |
1677 | ||
d62a17ae | 1678 | install_element(INTERFACE_NODE, &ipv6_nd_suppress_ra_cmd); |
1679 | install_element(INTERFACE_NODE, &no_ipv6_nd_suppress_ra_cmd); | |
1680 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_cmd); | |
1681 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_msec_cmd); | |
1682 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_interval_cmd); | |
1683 | install_element(INTERFACE_NODE, &ipv6_nd_ra_lifetime_cmd); | |
1684 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_lifetime_cmd); | |
1685 | install_element(INTERFACE_NODE, &ipv6_nd_reachable_time_cmd); | |
1686 | install_element(INTERFACE_NODE, &no_ipv6_nd_reachable_time_cmd); | |
1687 | install_element(INTERFACE_NODE, &ipv6_nd_managed_config_flag_cmd); | |
1688 | install_element(INTERFACE_NODE, &no_ipv6_nd_managed_config_flag_cmd); | |
1689 | install_element(INTERFACE_NODE, &ipv6_nd_other_config_flag_cmd); | |
1690 | install_element(INTERFACE_NODE, &no_ipv6_nd_other_config_flag_cmd); | |
1691 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_config_flag_cmd); | |
1692 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_config_flag_cmd); | |
1693 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_preference_cmd); | |
1694 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_preference_cmd); | |
1695 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_lifetime_cmd); | |
1696 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_lifetime_cmd); | |
1697 | install_element(INTERFACE_NODE, | |
1698 | &ipv6_nd_adv_interval_config_option_cmd); | |
1699 | install_element(INTERFACE_NODE, | |
1700 | &no_ipv6_nd_adv_interval_config_option_cmd); | |
1701 | install_element(INTERFACE_NODE, &ipv6_nd_prefix_cmd); | |
1702 | install_element(INTERFACE_NODE, &no_ipv6_nd_prefix_cmd); | |
1703 | install_element(INTERFACE_NODE, &ipv6_nd_router_preference_cmd); | |
1704 | install_element(INTERFACE_NODE, &no_ipv6_nd_router_preference_cmd); | |
1705 | install_element(INTERFACE_NODE, &ipv6_nd_mtu_cmd); | |
1706 | install_element(INTERFACE_NODE, &no_ipv6_nd_mtu_cmd); | |
718e3744 | 1707 | } |
1708 | ||
d62a17ae | 1709 | static int if_join_all_router(int sock, struct interface *ifp) |
718e3744 | 1710 | { |
d62a17ae | 1711 | int ret; |
718e3744 | 1712 | |
d62a17ae | 1713 | struct ipv6_mreq mreq; |
718e3744 | 1714 | |
d62a17ae | 1715 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
1716 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
1717 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 1718 | |
d62a17ae | 1719 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char *)&mreq, |
1720 | sizeof mreq); | |
1721 | if (ret < 0) | |
1722 | zlog_warn("%s(%u): Failed to join group, socket %u error %s", | |
1723 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 1724 | |
d62a17ae | 1725 | if (IS_ZEBRA_DEBUG_EVENT) |
1726 | zlog_debug( | |
1727 | "%s(%u): Join All-Routers multicast group, socket %u", | |
1728 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 1729 | |
d62a17ae | 1730 | return 0; |
718e3744 | 1731 | } |
1732 | ||
d62a17ae | 1733 | static int if_leave_all_router(int sock, struct interface *ifp) |
718e3744 | 1734 | { |
d62a17ae | 1735 | int ret; |
718e3744 | 1736 | |
d62a17ae | 1737 | struct ipv6_mreq mreq; |
718e3744 | 1738 | |
d62a17ae | 1739 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
1740 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
1741 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 1742 | |
d62a17ae | 1743 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_LEAVE_GROUP, (char *)&mreq, |
1744 | sizeof mreq); | |
1745 | if (ret < 0) | |
1746 | zlog_warn("%s(%u): Failed to leave group, socket %u error %s", | |
1747 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 1748 | |
d62a17ae | 1749 | if (IS_ZEBRA_DEBUG_EVENT) |
1750 | zlog_debug( | |
1751 | "%s(%u): Leave All-Routers multicast group, socket %u", | |
1752 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 1753 | |
d62a17ae | 1754 | return 0; |
718e3744 | 1755 | } |
1756 | ||
1757 | #else | |
d62a17ae | 1758 | void rtadv_init(struct zebra_ns *zns) |
cd80d74f | 1759 | { |
d62a17ae | 1760 | /* Empty.*/; |
cd80d74f | 1761 | } |
d62a17ae | 1762 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 1763 | { |
d62a17ae | 1764 | /* Empty.*/; |
cd80d74f | 1765 | } |
d62a17ae | 1766 | void rtadv_cmd_init(void) |
718e3744 | 1767 | { |
d62a17ae | 1768 | /* Empty.*/; |
718e3744 | 1769 | } |
56c1f7d8 | 1770 | #endif /* HAVE_RTADV */ |