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718e3744 | 1 | /* Router advertisement |
34ccea1e | 2 | * Copyright (C) 2016 Cumulus Networks |
7cee1bb1 | 3 | * Copyright (C) 2005 6WIND <jean-mickael.guerin@6wind.com> |
718e3744 | 4 | * Copyright (C) 1999 Kunihiro Ishiguro |
5 | * | |
6 | * This file is part of GNU Zebra. | |
7 | * | |
8 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * GNU Zebra is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
896014f4 DL |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 21 | */ |
22 | ||
23 | #include <zebra.h> | |
24 | ||
25 | #include "memory.h" | |
4a1ab8e4 | 26 | #include "zebra_memory.h" |
718e3744 | 27 | #include "sockopt.h" |
28 | #include "thread.h" | |
29 | #include "if.h" | |
4a04e5f7 | 30 | #include "stream.h" |
718e3744 | 31 | #include "log.h" |
32 | #include "prefix.h" | |
33 | #include "linklist.h" | |
34 | #include "command.h" | |
edd7c245 | 35 | #include "privs.h" |
cd80d74f | 36 | #include "vrf.h" |
fe533c56 | 37 | #include "ns.h" |
43e52561 | 38 | #include "lib_errors.h" |
718e3744 | 39 | |
40 | #include "zebra/interface.h" | |
41 | #include "zebra/rtadv.h" | |
42 | #include "zebra/debug.h" | |
537d8ea9 | 43 | #include "zebra/rib.h" |
bf094f69 | 44 | #include "zebra/zapi_msg.h" |
fe18ee2d | 45 | #include "zebra/zebra_ns.h" |
7c551956 | 46 | #include "zebra/zebra_vrf.h" |
364fed6b | 47 | #include "zebra/zebra_errors.h" |
a3be9fa1 | 48 | #include "zebra/zebra_router.h" |
718e3744 | 49 | |
edd7c245 | 50 | extern struct zebra_privs_t zserv_privs; |
51 | ||
d62a17ae | 52 | #if defined(HAVE_RTADV) |
718e3744 | 53 | |
fa2b17e3 | 54 | #ifdef OPEN_BSD |
55 | #include <netinet/icmp6.h> | |
56 | #endif | |
57 | ||
718e3744 | 58 | /* If RFC2133 definition is used. */ |
59 | #ifndef IPV6_JOIN_GROUP | |
60 | #define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP | |
61 | #endif | |
62 | #ifndef IPV6_LEAVE_GROUP | |
63 | #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP | |
64 | #endif | |
65 | ||
66 | #define ALLNODE "ff02::1" | |
67 | #define ALLROUTER "ff02::2" | |
68 | ||
110765e3 LS |
69 | DEFINE_MTYPE_STATIC(ZEBRA, RTADV_RDNSS, "Router Advertisement RDNSS") |
70 | DEFINE_MTYPE_STATIC(ZEBRA, RTADV_DNSSL, "Router Advertisement DNSSL") | |
71 | ||
2eb27eec DL |
72 | /* Order is intentional. Matches RFC4191. This array is also used for |
73 | command matching, so only modify with care. */ | |
74 | const char *rtadv_pref_strs[] = {"medium", "high", "INVALID", "low", 0}; | |
75 | ||
d62a17ae | 76 | enum rtadv_event { |
77 | RTADV_START, | |
78 | RTADV_STOP, | |
79 | RTADV_TIMER, | |
80 | RTADV_TIMER_MSEC, | |
81 | RTADV_READ | |
82 | }; | |
718e3744 | 83 | |
d62a17ae | 84 | static void rtadv_event(struct zebra_ns *, enum rtadv_event, int); |
718e3744 | 85 | |
d62a17ae | 86 | static int if_join_all_router(int, struct interface *); |
87 | static int if_leave_all_router(int, struct interface *); | |
6b0655a2 | 88 | |
d62a17ae | 89 | static int rtadv_increment_received(struct zebra_ns *zns, ifindex_t *ifindex) |
911ad1e2 | 90 | { |
d62a17ae | 91 | int ret = -1; |
92 | struct interface *iface; | |
93 | struct zebra_if *zif; | |
94 | ||
95 | iface = if_lookup_by_index_per_ns(zns, *ifindex); | |
96 | if (iface && iface->info) { | |
97 | zif = iface->info; | |
98 | zif->ra_rcvd++; | |
99 | ret = 0; | |
100 | } | |
101 | return ret; | |
795b5abf QY |
102 | } |
103 | ||
d7c0a89a | 104 | static int rtadv_recv_packet(struct zebra_ns *zns, int sock, uint8_t *buf, |
d62a17ae | 105 | int buflen, struct sockaddr_in6 *from, |
106 | ifindex_t *ifindex, int *hoplimit) | |
718e3744 | 107 | { |
d62a17ae | 108 | int ret; |
109 | struct msghdr msg; | |
110 | struct iovec iov; | |
111 | struct cmsghdr *cmsgptr; | |
112 | struct in6_addr dst; | |
113 | ||
114 | char adata[1024]; | |
115 | ||
116 | /* Fill in message and iovec. */ | |
0af35d90 | 117 | memset(&msg, 0, sizeof(msg)); |
d62a17ae | 118 | msg.msg_name = (void *)from; |
119 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
120 | msg.msg_iov = &iov; | |
121 | msg.msg_iovlen = 1; | |
122 | msg.msg_control = (void *)adata; | |
123 | msg.msg_controllen = sizeof adata; | |
124 | iov.iov_base = buf; | |
125 | iov.iov_len = buflen; | |
126 | ||
127 | /* If recvmsg fail return minus value. */ | |
128 | ret = recvmsg(sock, &msg, 0); | |
129 | if (ret < 0) | |
130 | return ret; | |
131 | ||
adf0e7c6 | 132 | for (cmsgptr = CMSG_FIRSTHDR(&msg); cmsgptr != NULL; |
d62a17ae | 133 | cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)) { |
134 | /* I want interface index which this packet comes from. */ | |
135 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
136 | && cmsgptr->cmsg_type == IPV6_PKTINFO) { | |
137 | struct in6_pktinfo *ptr; | |
138 | ||
139 | ptr = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
140 | *ifindex = ptr->ipi6_ifindex; | |
141 | memcpy(&dst, &ptr->ipi6_addr, sizeof(ptr->ipi6_addr)); | |
142 | } | |
143 | ||
144 | /* Incoming packet's hop limit. */ | |
145 | if (cmsgptr->cmsg_level == IPPROTO_IPV6 | |
146 | && cmsgptr->cmsg_type == IPV6_HOPLIMIT) { | |
147 | int *hoptr = (int *)CMSG_DATA(cmsgptr); | |
148 | *hoplimit = *hoptr; | |
149 | } | |
b0b709ab | 150 | } |
795b5abf | 151 | |
d62a17ae | 152 | rtadv_increment_received(zns, ifindex); |
153 | return ret; | |
718e3744 | 154 | } |
155 | ||
156 | #define RTADV_MSG_SIZE 4096 | |
157 | ||
158 | /* Send router advertisement packet. */ | |
d62a17ae | 159 | static void rtadv_send_packet(int sock, struct interface *ifp) |
718e3744 | 160 | { |
d62a17ae | 161 | struct msghdr msg; |
162 | struct iovec iov; | |
163 | struct cmsghdr *cmsgptr; | |
164 | struct in6_pktinfo *pkt; | |
165 | struct sockaddr_in6 addr; | |
166 | static void *adata = NULL; | |
167 | unsigned char buf[RTADV_MSG_SIZE]; | |
168 | struct nd_router_advert *rtadv; | |
169 | int ret; | |
170 | int len = 0; | |
171 | struct zebra_if *zif; | |
172 | struct rtadv_prefix *rprefix; | |
d7c0a89a QY |
173 | uint8_t all_nodes_addr[] = {0xff, 0x02, 0, 0, 0, 0, 0, 0, |
174 | 0, 0, 0, 0, 0, 0, 0, 1}; | |
d62a17ae | 175 | struct listnode *node; |
d7c0a89a | 176 | uint16_t pkt_RouterLifetime; |
d62a17ae | 177 | |
178 | /* | |
179 | * Allocate control message bufffer. This is dynamic because | |
180 | * CMSG_SPACE is not guaranteed not to call a function. Note that | |
181 | * the size will be different on different architectures due to | |
182 | * differing alignment rules. | |
183 | */ | |
184 | if (adata == NULL) { | |
185 | /* XXX Free on shutdown. */ | |
b8aa3767 | 186 | adata = calloc(1, CMSG_SPACE(sizeof(struct in6_pktinfo))); |
d62a17ae | 187 | |
b8aa3767 | 188 | if (adata == NULL) { |
9df414fe | 189 | zlog_debug( |
d62a17ae | 190 | "rtadv_send_packet: can't malloc control data"); |
b8aa3767 DS |
191 | exit(-1); |
192 | } | |
d62a17ae | 193 | } |
194 | ||
195 | /* Logging of packet. */ | |
196 | if (IS_ZEBRA_DEBUG_PACKET) | |
197 | zlog_debug("%s(%u): Tx RA, socket %u", ifp->name, ifp->ifindex, | |
198 | sock); | |
199 | ||
200 | /* Fill in sockaddr_in6. */ | |
201 | memset(&addr, 0, sizeof(struct sockaddr_in6)); | |
202 | addr.sin6_family = AF_INET6; | |
718e3744 | 203 | #ifdef SIN6_LEN |
d62a17ae | 204 | addr.sin6_len = sizeof(struct sockaddr_in6); |
718e3744 | 205 | #endif /* SIN6_LEN */ |
d62a17ae | 206 | addr.sin6_port = htons(IPPROTO_ICMPV6); |
207 | IPV6_ADDR_COPY(&addr.sin6_addr, all_nodes_addr); | |
208 | ||
209 | /* Fetch interface information. */ | |
210 | zif = ifp->info; | |
211 | ||
212 | /* Make router advertisement message. */ | |
213 | rtadv = (struct nd_router_advert *)buf; | |
214 | ||
215 | rtadv->nd_ra_type = ND_ROUTER_ADVERT; | |
216 | rtadv->nd_ra_code = 0; | |
217 | rtadv->nd_ra_cksum = 0; | |
218 | ||
219 | rtadv->nd_ra_curhoplimit = 64; | |
220 | ||
221 | /* RFC4191: Default Router Preference is 0 if Router Lifetime is 0. */ | |
222 | rtadv->nd_ra_flags_reserved = zif->rtadv.AdvDefaultLifetime == 0 | |
223 | ? 0 | |
224 | : zif->rtadv.DefaultPreference; | |
225 | rtadv->nd_ra_flags_reserved <<= 3; | |
226 | ||
227 | if (zif->rtadv.AdvManagedFlag) | |
228 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_MANAGED; | |
229 | if (zif->rtadv.AdvOtherConfigFlag) | |
230 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_OTHER; | |
231 | if (zif->rtadv.AdvHomeAgentFlag) | |
232 | rtadv->nd_ra_flags_reserved |= ND_RA_FLAG_HOME_AGENT; | |
233 | /* Note that according to Neighbor Discovery (RFC 4861 [18]), | |
234 | * AdvDefaultLifetime is by default based on the value of | |
235 | * MaxRtrAdvInterval. AdvDefaultLifetime is used in the Router Lifetime | |
236 | * field of Router Advertisements. Given that this field is expressed | |
237 | * in seconds, a small MaxRtrAdvInterval value can result in a zero | |
238 | * value for this field. To prevent this, routers SHOULD keep | |
239 | * AdvDefaultLifetime in at least one second, even if the use of | |
240 | * MaxRtrAdvInterval would result in a smaller value. -- RFC6275, 7.5 */ | |
241 | pkt_RouterLifetime = | |
242 | zif->rtadv.AdvDefaultLifetime != -1 | |
243 | ? zif->rtadv.AdvDefaultLifetime | |
244 | : MAX(1, 0.003 * zif->rtadv.MaxRtrAdvInterval); | |
245 | rtadv->nd_ra_router_lifetime = htons(pkt_RouterLifetime); | |
246 | rtadv->nd_ra_reachable = htonl(zif->rtadv.AdvReachableTime); | |
247 | rtadv->nd_ra_retransmit = htonl(0); | |
248 | ||
249 | len = sizeof(struct nd_router_advert); | |
250 | ||
251 | /* If both the Home Agent Preference and Home Agent Lifetime are set to | |
252 | * their default values specified above, this option SHOULD NOT be | |
253 | * included in the Router Advertisement messages sent by this home | |
254 | * agent. -- RFC6275, 7.4 */ | |
255 | if (zif->rtadv.AdvHomeAgentFlag | |
256 | && (zif->rtadv.HomeAgentPreference | |
257 | || zif->rtadv.HomeAgentLifetime != -1)) { | |
258 | struct nd_opt_homeagent_info *ndopt_hai = | |
259 | (struct nd_opt_homeagent_info *)(buf + len); | |
260 | ndopt_hai->nd_opt_hai_type = ND_OPT_HA_INFORMATION; | |
261 | ndopt_hai->nd_opt_hai_len = 1; | |
262 | ndopt_hai->nd_opt_hai_reserved = 0; | |
263 | ndopt_hai->nd_opt_hai_preference = | |
264 | htons(zif->rtadv.HomeAgentPreference); | |
265 | /* 16-bit unsigned integer. The lifetime associated with the | |
266 | * home | |
267 | * agent in units of seconds. The default value is the same as | |
268 | * the | |
269 | * Router Lifetime, as specified in the main body of the Router | |
270 | * Advertisement. The maximum value corresponds to 18.2 hours. | |
271 | * A | |
272 | * value of 0 MUST NOT be used. -- RFC6275, 7.5 */ | |
273 | ndopt_hai->nd_opt_hai_lifetime = | |
274 | htons(zif->rtadv.HomeAgentLifetime != -1 | |
275 | ? zif->rtadv.HomeAgentLifetime | |
276 | : MAX(1, pkt_RouterLifetime) /* 0 is OK | |
277 | for RL, | |
278 | but not | |
279 | for HAL*/ | |
9d303b37 | 280 | ); |
d62a17ae | 281 | len += sizeof(struct nd_opt_homeagent_info); |
282 | } | |
718e3744 | 283 | |
d62a17ae | 284 | if (zif->rtadv.AdvIntervalOption) { |
285 | struct nd_opt_adv_interval *ndopt_adv = | |
286 | (struct nd_opt_adv_interval *)(buf + len); | |
287 | ndopt_adv->nd_opt_ai_type = ND_OPT_ADV_INTERVAL; | |
288 | ndopt_adv->nd_opt_ai_len = 1; | |
289 | ndopt_adv->nd_opt_ai_reserved = 0; | |
290 | ndopt_adv->nd_opt_ai_interval = | |
291 | htonl(zif->rtadv.MaxRtrAdvInterval); | |
292 | len += sizeof(struct nd_opt_adv_interval); | |
293 | } | |
294 | ||
295 | /* Fill in prefix. */ | |
296 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
297 | struct nd_opt_prefix_info *pinfo; | |
718e3744 | 298 | |
d62a17ae | 299 | pinfo = (struct nd_opt_prefix_info *)(buf + len); |
718e3744 | 300 | |
d62a17ae | 301 | pinfo->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION; |
302 | pinfo->nd_opt_pi_len = 4; | |
303 | pinfo->nd_opt_pi_prefix_len = rprefix->prefix.prefixlen; | |
304 | ||
305 | pinfo->nd_opt_pi_flags_reserved = 0; | |
306 | if (rprefix->AdvOnLinkFlag) | |
307 | pinfo->nd_opt_pi_flags_reserved |= | |
308 | ND_OPT_PI_FLAG_ONLINK; | |
309 | if (rprefix->AdvAutonomousFlag) | |
310 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_AUTO; | |
311 | if (rprefix->AdvRouterAddressFlag) | |
312 | pinfo->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_RADDR; | |
313 | ||
314 | pinfo->nd_opt_pi_valid_time = htonl(rprefix->AdvValidLifetime); | |
315 | pinfo->nd_opt_pi_preferred_time = | |
316 | htonl(rprefix->AdvPreferredLifetime); | |
317 | pinfo->nd_opt_pi_reserved2 = 0; | |
318 | ||
319 | IPV6_ADDR_COPY(&pinfo->nd_opt_pi_prefix, | |
320 | &rprefix->prefix.prefix); | |
321 | ||
322 | #ifdef DEBUG | |
323 | { | |
d7c0a89a | 324 | uint8_t buf[INET6_ADDRSTRLEN]; |
d62a17ae | 325 | |
326 | zlog_debug("DEBUG %s", | |
327 | inet_ntop(AF_INET6, &pinfo->nd_opt_pi_prefix, | |
328 | buf, INET6_ADDRSTRLEN)); | |
329 | } | |
718e3744 | 330 | #endif /* DEBUG */ |
331 | ||
d62a17ae | 332 | len += sizeof(struct nd_opt_prefix_info); |
333 | } | |
334 | ||
335 | /* Hardware address. */ | |
336 | if (ifp->hw_addr_len != 0) { | |
337 | buf[len++] = ND_OPT_SOURCE_LINKADDR; | |
338 | ||
339 | /* Option length should be rounded up to next octet if | |
340 | the link address does not end on an octet boundary. */ | |
341 | buf[len++] = (ifp->hw_addr_len + 9) >> 3; | |
342 | ||
343 | memcpy(buf + len, ifp->hw_addr, ifp->hw_addr_len); | |
344 | len += ifp->hw_addr_len; | |
345 | ||
346 | /* Pad option to end on an octet boundary. */ | |
347 | memset(buf + len, 0, -(ifp->hw_addr_len + 2) & 0x7); | |
348 | len += -(ifp->hw_addr_len + 2) & 0x7; | |
349 | } | |
350 | ||
351 | /* MTU */ | |
352 | if (zif->rtadv.AdvLinkMTU) { | |
353 | struct nd_opt_mtu *opt = (struct nd_opt_mtu *)(buf + len); | |
354 | opt->nd_opt_mtu_type = ND_OPT_MTU; | |
355 | opt->nd_opt_mtu_len = 1; | |
356 | opt->nd_opt_mtu_reserved = 0; | |
357 | opt->nd_opt_mtu_mtu = htonl(zif->rtadv.AdvLinkMTU); | |
358 | len += sizeof(struct nd_opt_mtu); | |
359 | } | |
360 | ||
7eab94f9 LS |
361 | /* |
362 | * There is no limit on the number of configurable recursive DNS | |
363 | * servers or search list entries. We don't want the RA message | |
364 | * to exceed the link's MTU (risking fragmentation) or even | |
365 | * blow the stack buffer allocated for it. | |
366 | */ | |
367 | size_t max_len = MIN(ifp->mtu6 - 40, sizeof(buf)); | |
368 | ||
3eb4fbb0 LS |
369 | /* Recursive DNS servers */ |
370 | struct rtadv_rdnss *rdnss; | |
371 | ||
372 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvRDNSSList, node, rdnss)) { | |
7eab94f9 LS |
373 | size_t opt_len = |
374 | sizeof(struct nd_opt_rdnss) + sizeof(struct in6_addr); | |
375 | ||
376 | if (len + opt_len > max_len) { | |
377 | zlog_warn( | |
378 | "%s(%u): Tx RA: RDNSS option would exceed MTU, omitting it", | |
379 | ifp->name, ifp->ifindex); | |
380 | goto no_more_opts; | |
381 | } | |
3eb4fbb0 LS |
382 | struct nd_opt_rdnss *opt = (struct nd_opt_rdnss *)(buf + len); |
383 | ||
384 | opt->nd_opt_rdnss_type = ND_OPT_RDNSS; | |
7eab94f9 | 385 | opt->nd_opt_rdnss_len = opt_len / 8; |
3eb4fbb0 LS |
386 | opt->nd_opt_rdnss_reserved = 0; |
387 | opt->nd_opt_rdnss_lifetime = htonl( | |
388 | rdnss->lifetime_set | |
389 | ? rdnss->lifetime | |
390 | : MAX(1, 0.003 * zif->rtadv.MaxRtrAdvInterval)); | |
391 | ||
392 | len += sizeof(struct nd_opt_rdnss); | |
7eab94f9 | 393 | |
3eb4fbb0 LS |
394 | IPV6_ADDR_COPY(buf + len, &rdnss->addr); |
395 | len += sizeof(struct in6_addr); | |
396 | } | |
397 | ||
398 | /* DNS search list */ | |
399 | struct rtadv_dnssl *dnssl; | |
400 | ||
401 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvDNSSLList, node, dnssl)) { | |
7eab94f9 LS |
402 | size_t opt_len = sizeof(struct nd_opt_dnssl) |
403 | + ((dnssl->encoded_len + 7) & ~7); | |
404 | ||
405 | if (len + opt_len > max_len) { | |
406 | zlog_warn( | |
407 | "%s(%u): Tx RA: DNSSL option would exceed MTU, omitting it", | |
408 | ifp->name, ifp->ifindex); | |
409 | goto no_more_opts; | |
410 | } | |
3eb4fbb0 LS |
411 | struct nd_opt_dnssl *opt = (struct nd_opt_dnssl *)(buf + len); |
412 | ||
413 | opt->nd_opt_dnssl_type = ND_OPT_DNSSL; | |
7eab94f9 | 414 | opt->nd_opt_dnssl_len = opt_len / 8; |
3eb4fbb0 LS |
415 | opt->nd_opt_dnssl_reserved = 0; |
416 | opt->nd_opt_dnssl_lifetime = htonl( | |
417 | dnssl->lifetime_set | |
418 | ? dnssl->lifetime | |
419 | : MAX(1, 0.003 * zif->rtadv.MaxRtrAdvInterval)); | |
420 | ||
421 | len += sizeof(struct nd_opt_dnssl); | |
422 | ||
3eb4fbb0 LS |
423 | memcpy(buf + len, dnssl->encoded_name, dnssl->encoded_len); |
424 | len += dnssl->encoded_len; | |
425 | ||
426 | /* Zero-pad to 8-octet boundary */ | |
427 | while (len % 8) | |
428 | buf[len++] = '\0'; | |
3eb4fbb0 LS |
429 | } |
430 | ||
7eab94f9 LS |
431 | no_more_opts: |
432 | ||
d62a17ae | 433 | msg.msg_name = (void *)&addr; |
434 | msg.msg_namelen = sizeof(struct sockaddr_in6); | |
435 | msg.msg_iov = &iov; | |
436 | msg.msg_iovlen = 1; | |
437 | msg.msg_control = (void *)adata; | |
438 | msg.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo)); | |
439 | msg.msg_flags = 0; | |
440 | iov.iov_base = buf; | |
441 | iov.iov_len = len; | |
442 | ||
adf0e7c6 | 443 | cmsgptr = CMSG_FIRSTHDR(&msg); |
d62a17ae | 444 | cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo)); |
445 | cmsgptr->cmsg_level = IPPROTO_IPV6; | |
446 | cmsgptr->cmsg_type = IPV6_PKTINFO; | |
447 | ||
448 | pkt = (struct in6_pktinfo *)CMSG_DATA(cmsgptr); | |
449 | memset(&pkt->ipi6_addr, 0, sizeof(struct in6_addr)); | |
450 | pkt->ipi6_ifindex = ifp->ifindex; | |
451 | ||
452 | ret = sendmsg(sock, &msg, 0); | |
453 | if (ret < 0) { | |
450971aa | 454 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
455 | "%s(%u): Tx RA failed, socket %u error %d (%s)", |
456 | ifp->name, ifp->ifindex, sock, errno, | |
457 | safe_strerror(errno)); | |
d62a17ae | 458 | } else |
459 | zif->ra_sent++; | |
718e3744 | 460 | } |
461 | ||
d62a17ae | 462 | static int rtadv_timer(struct thread *thread) |
718e3744 | 463 | { |
d62a17ae | 464 | struct zebra_ns *zns = THREAD_ARG(thread); |
465 | struct vrf *vrf; | |
d62a17ae | 466 | struct interface *ifp; |
467 | struct zebra_if *zif; | |
468 | int period; | |
469 | ||
a3be9fa1 DS |
470 | zrouter.rtadv.ra_timer = NULL; |
471 | if (zrouter.rtadv.adv_msec_if_count == 0) { | |
d62a17ae | 472 | period = 1000; /* 1 s */ |
473 | rtadv_event(zns, RTADV_TIMER, 1 /* 1 s */); | |
474 | } else { | |
475 | period = 10; /* 10 ms */ | |
476 | rtadv_event(zns, RTADV_TIMER_MSEC, 10 /* 10 ms */); | |
477 | } | |
478 | ||
a2addae8 | 479 | RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) |
451fda4f | 480 | FOR_ALL_INTERFACES (vrf, ifp) { |
a2addae8 RW |
481 | if (if_is_loopback(ifp) |
482 | || CHECK_FLAG(ifp->status, | |
483 | ZEBRA_INTERFACE_VRF_LOOPBACK) | |
484 | || !if_is_operative(ifp)) | |
485 | continue; | |
486 | ||
487 | zif = ifp->info; | |
488 | ||
489 | if (zif->rtadv.AdvSendAdvertisements) { | |
490 | if (zif->rtadv.inFastRexmit) { | |
491 | /* We assume we fast rexmit every sec so | |
492 | * no | |
493 | * additional vars */ | |
494 | if (--zif->rtadv.NumFastReXmitsRemain | |
495 | <= 0) | |
496 | zif->rtadv.inFastRexmit = 0; | |
497 | ||
498 | if (IS_ZEBRA_DEBUG_SEND) | |
499 | zlog_debug( | |
500 | "Fast RA Rexmit on interface %s", | |
501 | ifp->name); | |
502 | ||
a3be9fa1 DS |
503 | rtadv_send_packet(zrouter.rtadv.sock, |
504 | ifp); | |
a2addae8 RW |
505 | } else { |
506 | zif->rtadv.AdvIntervalTimer -= period; | |
507 | if (zif->rtadv.AdvIntervalTimer <= 0) { | |
508 | /* FIXME: using | |
509 | MaxRtrAdvInterval each | |
510 | time isn't what section | |
511 | 6.2.4 of RFC4861 tells to do. | |
512 | */ | |
513 | zif->rtadv.AdvIntervalTimer = | |
514 | zif->rtadv | |
515 | .MaxRtrAdvInterval; | |
516 | rtadv_send_packet( | |
a3be9fa1 DS |
517 | zrouter.rtadv.sock, |
518 | ifp); | |
a2addae8 | 519 | } |
d62a17ae | 520 | } |
521 | } | |
522 | } | |
d62a17ae | 523 | |
524 | return 0; | |
718e3744 | 525 | } |
526 | ||
d62a17ae | 527 | static void rtadv_process_solicit(struct interface *ifp) |
718e3744 | 528 | { |
d62a17ae | 529 | struct zebra_vrf *zvrf = vrf_info_lookup(ifp->vrf_id); |
530 | struct zebra_ns *zns = zvrf->zns; | |
718e3744 | 531 | |
d62a17ae | 532 | assert(zns); |
a3be9fa1 | 533 | rtadv_send_packet(zrouter.rtadv.sock, ifp); |
718e3744 | 534 | } |
535 | ||
71974bf5 DS |
536 | /* |
537 | * This function processes optional attributes off of | |
538 | * end of a RA packet received. At this point in | |
539 | * time we only care about this in one situation | |
540 | * which is when a interface does not have a LL | |
541 | * v6 address. We still need to be able to install | |
542 | * the mac address for v4 to v6 resolution | |
543 | */ | |
544 | static void rtadv_process_optional(uint8_t *optional, unsigned int len, | |
545 | struct interface *ifp, | |
546 | struct sockaddr_in6 *addr) | |
547 | { | |
548 | char *mac; | |
549 | ||
550 | while (len > 0) { | |
551 | struct nd_opt_hdr *opt_hdr = (struct nd_opt_hdr *)optional; | |
552 | ||
553 | switch(opt_hdr->nd_opt_type) { | |
554 | case ND_OPT_SOURCE_LINKADDR: | |
555 | mac = (char *)(optional+2); | |
556 | if_nbr_mac_to_ipv4ll_neigh_update(ifp, mac, | |
557 | &addr->sin6_addr, 1); | |
558 | break; | |
559 | default: | |
560 | break; | |
561 | } | |
562 | ||
563 | len -= 8 * opt_hdr->nd_opt_len; | |
564 | optional += 8 * opt_hdr->nd_opt_len; | |
565 | } | |
566 | } | |
567 | ||
d7c0a89a | 568 | static void rtadv_process_advert(uint8_t *msg, unsigned int len, |
d62a17ae | 569 | struct interface *ifp, |
570 | struct sockaddr_in6 *addr) | |
718e3744 | 571 | { |
d62a17ae | 572 | struct nd_router_advert *radvert; |
573 | char addr_str[INET6_ADDRSTRLEN]; | |
574 | struct zebra_if *zif; | |
575 | struct prefix p; | |
718e3744 | 576 | |
d62a17ae | 577 | zif = ifp->info; |
a80beece | 578 | |
d62a17ae | 579 | inet_ntop(AF_INET6, &addr->sin6_addr, addr_str, INET6_ADDRSTRLEN); |
580 | ||
581 | if (len < sizeof(struct nd_router_advert)) { | |
71974bf5 DS |
582 | if (IS_ZEBRA_DEBUG_PACKET) |
583 | zlog_debug("%s(%u): Rx RA with invalid length %d from %s", | |
584 | ifp->name, ifp->ifindex, len, addr_str); | |
d62a17ae | 585 | return; |
586 | } | |
71974bf5 | 587 | |
d62a17ae | 588 | if (!IN6_IS_ADDR_LINKLOCAL(&addr->sin6_addr)) { |
71974bf5 DS |
589 | rtadv_process_optional(msg + sizeof(struct nd_router_advert), |
590 | len - sizeof(struct nd_router_advert), | |
591 | ifp, addr); | |
592 | if (IS_ZEBRA_DEBUG_PACKET) | |
593 | zlog_debug("%s(%u): Rx RA with non-linklocal source address from %s", | |
594 | ifp->name, ifp->ifindex, addr_str); | |
d62a17ae | 595 | return; |
596 | } | |
597 | ||
598 | radvert = (struct nd_router_advert *)msg; | |
599 | ||
600 | if ((radvert->nd_ra_curhoplimit && zif->rtadv.AdvCurHopLimit) | |
601 | && (radvert->nd_ra_curhoplimit != zif->rtadv.AdvCurHopLimit)) { | |
9df414fe | 602 | flog_warn( |
e914ccbe | 603 | EC_ZEBRA_RA_PARAM_MISMATCH, |
d62a17ae | 604 | "%s(%u): Rx RA - our AdvCurHopLimit doesn't agree with %s", |
605 | ifp->name, ifp->ifindex, addr_str); | |
606 | } | |
607 | ||
608 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED) | |
609 | && !zif->rtadv.AdvManagedFlag) { | |
9df414fe | 610 | flog_warn( |
e914ccbe | 611 | EC_ZEBRA_RA_PARAM_MISMATCH, |
d62a17ae | 612 | "%s(%u): Rx RA - our AdvManagedFlag doesn't agree with %s", |
613 | ifp->name, ifp->ifindex, addr_str); | |
614 | } | |
615 | ||
616 | if ((radvert->nd_ra_flags_reserved & ND_RA_FLAG_OTHER) | |
617 | && !zif->rtadv.AdvOtherConfigFlag) { | |
9df414fe | 618 | flog_warn( |
e914ccbe | 619 | EC_ZEBRA_RA_PARAM_MISMATCH, |
d62a17ae | 620 | "%s(%u): Rx RA - our AdvOtherConfigFlag doesn't agree with %s", |
621 | ifp->name, ifp->ifindex, addr_str); | |
622 | } | |
623 | ||
624 | if ((radvert->nd_ra_reachable && zif->rtadv.AdvReachableTime) | |
625 | && (ntohl(radvert->nd_ra_reachable) | |
626 | != zif->rtadv.AdvReachableTime)) { | |
9df414fe | 627 | flog_warn( |
e914ccbe | 628 | EC_ZEBRA_RA_PARAM_MISMATCH, |
d62a17ae | 629 | "%s(%u): Rx RA - our AdvReachableTime doesn't agree with %s", |
630 | ifp->name, ifp->ifindex, addr_str); | |
631 | } | |
632 | ||
633 | if ((radvert->nd_ra_retransmit && zif->rtadv.AdvRetransTimer) | |
634 | && (ntohl(radvert->nd_ra_retransmit) | |
635 | != (unsigned int)zif->rtadv.AdvRetransTimer)) { | |
9df414fe | 636 | flog_warn( |
e914ccbe | 637 | EC_ZEBRA_RA_PARAM_MISMATCH, |
d62a17ae | 638 | "%s(%u): Rx RA - our AdvRetransTimer doesn't agree with %s", |
639 | ifp->name, ifp->ifindex, addr_str); | |
640 | } | |
641 | ||
642 | /* Create entry for neighbor if not known. */ | |
643 | p.family = AF_INET6; | |
a85297a7 | 644 | IPV6_ADDR_COPY(&p.u.prefix6, &addr->sin6_addr); |
d62a17ae | 645 | p.prefixlen = IPV6_MAX_PREFIXLEN; |
646 | ||
647 | if (!nbr_connected_check(ifp, &p)) | |
648 | nbr_connected_add_ipv6(ifp, &addr->sin6_addr); | |
718e3744 | 649 | } |
650 | ||
d62a17ae | 651 | |
d7c0a89a | 652 | static void rtadv_process_packet(uint8_t *buf, unsigned int len, |
d62a17ae | 653 | ifindex_t ifindex, int hoplimit, |
654 | struct sockaddr_in6 *from, | |
655 | struct zebra_ns *zns) | |
718e3744 | 656 | { |
d62a17ae | 657 | struct icmp6_hdr *icmph; |
658 | struct interface *ifp; | |
659 | struct zebra_if *zif; | |
660 | char addr_str[INET6_ADDRSTRLEN]; | |
661 | ||
662 | inet_ntop(AF_INET6, &from->sin6_addr, addr_str, INET6_ADDRSTRLEN); | |
663 | ||
664 | /* Interface search. */ | |
665 | ifp = if_lookup_by_index_per_ns(zns, ifindex); | |
666 | if (ifp == NULL) { | |
e914ccbe | 667 | flog_warn(EC_ZEBRA_UNKNOWN_INTERFACE, |
9df414fe | 668 | "RA/RS received on unknown IF %u from %s", ifindex, |
d62a17ae | 669 | addr_str); |
670 | return; | |
671 | } | |
672 | ||
673 | if (IS_ZEBRA_DEBUG_PACKET) | |
674 | zlog_debug("%s(%u): Rx RA/RS len %d from %s", ifp->name, | |
675 | ifp->ifindex, len, addr_str); | |
676 | ||
677 | if (if_is_loopback(ifp) | |
678 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) | |
679 | return; | |
718e3744 | 680 | |
d62a17ae | 681 | /* Check interface configuration. */ |
682 | zif = ifp->info; | |
683 | if (!zif->rtadv.AdvSendAdvertisements) | |
684 | return; | |
718e3744 | 685 | |
d62a17ae | 686 | /* ICMP message length check. */ |
687 | if (len < sizeof(struct icmp6_hdr)) { | |
9df414fe QY |
688 | zlog_debug("%s(%u): Rx RA with Invalid ICMPV6 packet length %d", |
689 | ifp->name, ifp->ifindex, len); | |
d62a17ae | 690 | return; |
691 | } | |
692 | ||
693 | icmph = (struct icmp6_hdr *)buf; | |
718e3744 | 694 | |
d62a17ae | 695 | /* ICMP message type check. */ |
696 | if (icmph->icmp6_type != ND_ROUTER_SOLICIT | |
697 | && icmph->icmp6_type != ND_ROUTER_ADVERT) { | |
9df414fe QY |
698 | zlog_debug("%s(%u): Rx RA - Unwanted ICMPV6 message type %d", |
699 | ifp->name, ifp->ifindex, icmph->icmp6_type); | |
d62a17ae | 700 | return; |
701 | } | |
718e3744 | 702 | |
d62a17ae | 703 | /* Hoplimit check. */ |
704 | if (hoplimit >= 0 && hoplimit != 255) { | |
9df414fe QY |
705 | zlog_debug("%s(%u): Rx RA - Invalid hoplimit %d", ifp->name, |
706 | ifp->ifindex, hoplimit); | |
d62a17ae | 707 | return; |
708 | } | |
718e3744 | 709 | |
d62a17ae | 710 | /* Check ICMP message type. */ |
711 | if (icmph->icmp6_type == ND_ROUTER_SOLICIT) | |
712 | rtadv_process_solicit(ifp); | |
713 | else if (icmph->icmp6_type == ND_ROUTER_ADVERT) | |
714 | rtadv_process_advert(buf, len, ifp, from); | |
718e3744 | 715 | |
d62a17ae | 716 | return; |
718e3744 | 717 | } |
718 | ||
d62a17ae | 719 | static int rtadv_read(struct thread *thread) |
718e3744 | 720 | { |
d62a17ae | 721 | int sock; |
722 | int len; | |
d7c0a89a | 723 | uint8_t buf[RTADV_MSG_SIZE]; |
d62a17ae | 724 | struct sockaddr_in6 from; |
725 | ifindex_t ifindex = 0; | |
726 | int hoplimit = -1; | |
727 | struct zebra_ns *zns = THREAD_ARG(thread); | |
728 | ||
729 | sock = THREAD_FD(thread); | |
a3be9fa1 | 730 | zrouter.rtadv.ra_read = NULL; |
d62a17ae | 731 | |
732 | /* Register myself. */ | |
733 | rtadv_event(zns, RTADV_READ, sock); | |
734 | ||
735 | len = rtadv_recv_packet(zns, sock, buf, sizeof(buf), &from, &ifindex, | |
736 | &hoplimit); | |
737 | ||
738 | if (len < 0) { | |
450971aa | 739 | flog_err_sys(EC_LIB_SOCKET, |
9df414fe QY |
740 | "RA/RS recv failed, socket %u error %s", sock, |
741 | safe_strerror(errno)); | |
d62a17ae | 742 | return len; |
743 | } | |
744 | ||
745 | rtadv_process_packet(buf, (unsigned)len, ifindex, hoplimit, &from, zns); | |
746 | ||
747 | return 0; | |
718e3744 | 748 | } |
6b0655a2 | 749 | |
fe533c56 | 750 | static int rtadv_make_socket(ns_id_t ns_id) |
718e3744 | 751 | { |
8d2dcc85 | 752 | int sock = -1; |
d62a17ae | 753 | int ret = 0; |
754 | struct icmp6_filter filter; | |
755 | ||
01b9e3fd | 756 | frr_elevate_privs(&zserv_privs) { |
d62a17ae | 757 | |
01b9e3fd | 758 | sock = ns_socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6, ns_id); |
d62a17ae | 759 | |
01b9e3fd | 760 | } |
d62a17ae | 761 | |
762 | if (sock < 0) { | |
d62a17ae | 763 | return -1; |
764 | } | |
765 | ||
766 | ret = setsockopt_ipv6_pktinfo(sock, 1); | |
767 | if (ret < 0) { | |
768 | close(sock); | |
769 | return ret; | |
770 | } | |
771 | ret = setsockopt_ipv6_multicast_loop(sock, 0); | |
772 | if (ret < 0) { | |
773 | close(sock); | |
774 | return ret; | |
775 | } | |
776 | ret = setsockopt_ipv6_unicast_hops(sock, 255); | |
777 | if (ret < 0) { | |
778 | close(sock); | |
779 | return ret; | |
780 | } | |
781 | ret = setsockopt_ipv6_multicast_hops(sock, 255); | |
782 | if (ret < 0) { | |
783 | close(sock); | |
784 | return ret; | |
785 | } | |
786 | ret = setsockopt_ipv6_hoplimit(sock, 1); | |
787 | if (ret < 0) { | |
788 | close(sock); | |
789 | return ret; | |
790 | } | |
791 | ||
792 | ICMP6_FILTER_SETBLOCKALL(&filter); | |
793 | ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &filter); | |
794 | ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter); | |
795 | ||
796 | ret = setsockopt(sock, IPPROTO_ICMPV6, ICMP6_FILTER, &filter, | |
797 | sizeof(struct icmp6_filter)); | |
798 | if (ret < 0) { | |
799 | zlog_info("ICMP6_FILTER set fail: %s", safe_strerror(errno)); | |
44f12f20 | 800 | close(sock); |
d62a17ae | 801 | return ret; |
802 | } | |
803 | ||
804 | return sock; | |
718e3744 | 805 | } |
806 | ||
d62a17ae | 807 | static struct rtadv_prefix *rtadv_prefix_new(void) |
718e3744 | 808 | { |
d62a17ae | 809 | return XCALLOC(MTYPE_RTADV_PREFIX, sizeof(struct rtadv_prefix)); |
718e3744 | 810 | } |
811 | ||
d62a17ae | 812 | static void rtadv_prefix_free(struct rtadv_prefix *rtadv_prefix) |
718e3744 | 813 | { |
d62a17ae | 814 | XFREE(MTYPE_RTADV_PREFIX, rtadv_prefix); |
815 | } | |
718e3744 | 816 | |
d62a17ae | 817 | static struct rtadv_prefix *rtadv_prefix_lookup(struct list *rplist, |
818 | struct prefix_ipv6 *p) | |
819 | { | |
820 | struct listnode *node; | |
821 | struct rtadv_prefix *rprefix; | |
822 | ||
823 | for (ALL_LIST_ELEMENTS_RO(rplist, node, rprefix)) | |
824 | if (prefix_same((struct prefix *)&rprefix->prefix, | |
825 | (struct prefix *)p)) | |
826 | return rprefix; | |
827 | return NULL; | |
718e3744 | 828 | } |
829 | ||
d62a17ae | 830 | static struct rtadv_prefix *rtadv_prefix_get(struct list *rplist, |
831 | struct prefix_ipv6 *p) | |
718e3744 | 832 | { |
d62a17ae | 833 | struct rtadv_prefix *rprefix; |
834 | ||
835 | rprefix = rtadv_prefix_lookup(rplist, p); | |
836 | if (rprefix) | |
837 | return rprefix; | |
718e3744 | 838 | |
d62a17ae | 839 | rprefix = rtadv_prefix_new(); |
840 | memcpy(&rprefix->prefix, p, sizeof(struct prefix_ipv6)); | |
841 | listnode_add(rplist, rprefix); | |
718e3744 | 842 | |
d62a17ae | 843 | return rprefix; |
718e3744 | 844 | } |
845 | ||
d62a17ae | 846 | static void rtadv_prefix_set(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 847 | { |
d62a17ae | 848 | struct rtadv_prefix *rprefix; |
849 | ||
850 | rprefix = rtadv_prefix_get(zif->rtadv.AdvPrefixList, &rp->prefix); | |
851 | ||
852 | /* Set parameters. */ | |
853 | rprefix->AdvValidLifetime = rp->AdvValidLifetime; | |
854 | rprefix->AdvPreferredLifetime = rp->AdvPreferredLifetime; | |
855 | rprefix->AdvOnLinkFlag = rp->AdvOnLinkFlag; | |
856 | rprefix->AdvAutonomousFlag = rp->AdvAutonomousFlag; | |
857 | rprefix->AdvRouterAddressFlag = rp->AdvRouterAddressFlag; | |
718e3744 | 858 | } |
859 | ||
d62a17ae | 860 | static int rtadv_prefix_reset(struct zebra_if *zif, struct rtadv_prefix *rp) |
718e3744 | 861 | { |
d62a17ae | 862 | struct rtadv_prefix *rprefix; |
863 | ||
864 | rprefix = rtadv_prefix_lookup(zif->rtadv.AdvPrefixList, &rp->prefix); | |
865 | if (rprefix != NULL) { | |
866 | listnode_delete(zif->rtadv.AdvPrefixList, (void *)rprefix); | |
867 | rtadv_prefix_free(rprefix); | |
868 | return 1; | |
869 | } else | |
870 | return 0; | |
718e3744 | 871 | } |
872 | ||
d62a17ae | 873 | static void ipv6_nd_suppress_ra_set(struct interface *ifp, |
874 | ipv6_nd_suppress_ra_status status) | |
b6120505 | 875 | { |
d62a17ae | 876 | struct zebra_if *zif; |
877 | struct zebra_vrf *zvrf; | |
878 | struct zebra_ns *zns; | |
879 | ||
880 | zif = ifp->info; | |
881 | zvrf = vrf_info_lookup(ifp->vrf_id); | |
882 | zns = zvrf->zns; | |
883 | ||
884 | if (status == RA_SUPPRESS) { | |
885 | /* RA is currently enabled */ | |
886 | if (zif->rtadv.AdvSendAdvertisements) { | |
887 | zif->rtadv.AdvSendAdvertisements = 0; | |
888 | zif->rtadv.AdvIntervalTimer = 0; | |
a3be9fa1 | 889 | zrouter.rtadv.adv_if_count--; |
d62a17ae | 890 | |
a3be9fa1 | 891 | if_leave_all_router(zrouter.rtadv.sock, ifp); |
d62a17ae | 892 | |
a3be9fa1 | 893 | if (zrouter.rtadv.adv_if_count == 0) |
d62a17ae | 894 | rtadv_event(zns, RTADV_STOP, 0); |
895 | } | |
896 | } else { | |
897 | if (!zif->rtadv.AdvSendAdvertisements) { | |
898 | zif->rtadv.AdvSendAdvertisements = 1; | |
899 | zif->rtadv.AdvIntervalTimer = 0; | |
a3be9fa1 | 900 | zrouter.rtadv.adv_if_count++; |
d62a17ae | 901 | |
902 | if (zif->rtadv.MaxRtrAdvInterval >= 1000) { | |
903 | /* Enable Fast RA only when RA interval is in | |
904 | * secs */ | |
905 | zif->rtadv.inFastRexmit = 1; | |
906 | zif->rtadv.NumFastReXmitsRemain = | |
907 | RTADV_NUM_FAST_REXMITS; | |
908 | } | |
909 | ||
a3be9fa1 | 910 | if_join_all_router(zrouter.rtadv.sock, ifp); |
d62a17ae | 911 | |
a3be9fa1 DS |
912 | if (zrouter.rtadv.adv_if_count == 1) |
913 | rtadv_event(zns, RTADV_START, | |
914 | zrouter.rtadv.sock); | |
d62a17ae | 915 | } |
916 | } | |
b6120505 DW |
917 | } |
918 | ||
4a04e5f7 | 919 | /* |
920 | * Handle client (BGP) message to enable or disable IPv6 RA on an interface. | |
921 | * Note that while the client could request RA on an interface on which the | |
922 | * operator has not enabled RA, RA won't be disabled upon client request | |
5c81b96a | 923 | * if the operator has explicitly enabled RA. The enable request can also |
924 | * specify a RA interval (in seconds). | |
4a04e5f7 | 925 | */ |
1002497a | 926 | static void zebra_interface_radv_set(ZAPI_HANDLER_ARGS, int enable) |
4a04e5f7 | 927 | { |
d62a17ae | 928 | struct stream *s; |
ec93aa12 | 929 | ifindex_t ifindex; |
d62a17ae | 930 | struct interface *ifp; |
931 | struct zebra_if *zif; | |
932 | int ra_interval; | |
933 | ||
1002497a | 934 | s = msg; |
d62a17ae | 935 | |
936 | /* Get interface index and RA interval. */ | |
ec93aa12 DS |
937 | STREAM_GETL(s, ifindex); |
938 | STREAM_GETL(s, ra_interval); | |
d62a17ae | 939 | |
940 | if (IS_ZEBRA_DEBUG_EVENT) | |
941 | zlog_debug("%u: IF %u RA %s from client %s, interval %ds", | |
1002497a QY |
942 | zvrf_id(zvrf), ifindex, |
943 | enable ? "enable" : "disable", | |
d62a17ae | 944 | zebra_route_string(client->proto), ra_interval); |
945 | ||
946 | /* Locate interface and check VRF match. */ | |
947 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(NS_DEFAULT), ifindex); | |
948 | if (!ifp) { | |
e914ccbe | 949 | flog_warn(EC_ZEBRA_UNKNOWN_INTERFACE, |
9df414fe | 950 | "%u: IF %u RA %s client %s - interface unknown", |
1002497a | 951 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", |
d62a17ae | 952 | zebra_route_string(client->proto)); |
953 | return; | |
954 | } | |
955 | if (ifp->vrf_id != zvrf_id(zvrf)) { | |
9df414fe QY |
956 | zlog_debug( |
957 | "%u: IF %u RA %s client %s - VRF mismatch, IF VRF %u", | |
958 | zvrf_id(zvrf), ifindex, enable ? "enable" : "disable", | |
959 | zebra_route_string(client->proto), ifp->vrf_id); | |
d62a17ae | 960 | return; |
961 | } | |
962 | ||
963 | zif = ifp->info; | |
1002497a | 964 | if (enable) { |
3ea48364 | 965 | SET_FLAG(zif->rtadv.ra_configured, BGP_RA_CONFIGURED); |
d62a17ae | 966 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); |
967 | if (ra_interval | |
996c9314 LB |
968 | && (ra_interval * 1000) < zif->rtadv.MaxRtrAdvInterval |
969 | && !CHECK_FLAG(zif->rtadv.ra_configured, | |
970 | VTY_RA_INTERVAL_CONFIGURED)) | |
d62a17ae | 971 | zif->rtadv.MaxRtrAdvInterval = ra_interval * 1000; |
972 | } else { | |
3ea48364 DS |
973 | UNSET_FLAG(zif->rtadv.ra_configured, BGP_RA_CONFIGURED); |
974 | if (!CHECK_FLAG(zif->rtadv.ra_configured, | |
975 | VTY_RA_INTERVAL_CONFIGURED)) | |
d62a17ae | 976 | zif->rtadv.MaxRtrAdvInterval = |
977 | RTADV_MAX_RTR_ADV_INTERVAL; | |
3ea48364 | 978 | if (!CHECK_FLAG(zif->rtadv.ra_configured, VTY_RA_CONFIGURED)) |
d62a17ae | 979 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); |
d62a17ae | 980 | } |
ec93aa12 DS |
981 | stream_failure: |
982 | return; | |
4a04e5f7 | 983 | } |
984 | ||
89f4e507 QY |
985 | void zebra_interface_radv_disable(ZAPI_HANDLER_ARGS) |
986 | { | |
1002497a | 987 | zebra_interface_radv_set(client, hdr, msg, zvrf, 0); |
89f4e507 | 988 | } |
89f4e507 QY |
989 | void zebra_interface_radv_enable(ZAPI_HANDLER_ARGS) |
990 | { | |
1002497a | 991 | zebra_interface_radv_set(client, hdr, msg, zvrf, 1); |
89f4e507 QY |
992 | } |
993 | ||
718e3744 | 994 | DEFUN (ipv6_nd_suppress_ra, |
995 | ipv6_nd_suppress_ra_cmd, | |
996 | "ipv6 nd suppress-ra", | |
3e31cded | 997 | "Interface IPv6 config commands\n" |
718e3744 | 998 | "Neighbor discovery\n" |
999 | "Suppress Router Advertisement\n") | |
1000 | { | |
d62a17ae | 1001 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1002 | struct zebra_if *zif = ifp->info; | |
1003 | ||
1004 | if (if_is_loopback(ifp) | |
1005 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
1006 | vty_out(vty, | |
1007 | "Cannot configure IPv6 Router Advertisements on this interface\n"); | |
1008 | return CMD_WARNING_CONFIG_FAILED; | |
1009 | } | |
1010 | ||
3ea48364 DS |
1011 | if (!CHECK_FLAG(zif->rtadv.ra_configured, BGP_RA_CONFIGURED)) |
1012 | ipv6_nd_suppress_ra_set(ifp, RA_SUPPRESS); | |
1013 | ||
1014 | UNSET_FLAG(zif->rtadv.ra_configured, VTY_RA_CONFIGURED); | |
d62a17ae | 1015 | return CMD_SUCCESS; |
718e3744 | 1016 | } |
1017 | ||
718e3744 | 1018 | DEFUN (no_ipv6_nd_suppress_ra, |
1019 | no_ipv6_nd_suppress_ra_cmd, | |
1020 | "no ipv6 nd suppress-ra", | |
1021 | NO_STR | |
3e31cded | 1022 | "Interface IPv6 config commands\n" |
718e3744 | 1023 | "Neighbor discovery\n" |
1024 | "Suppress Router Advertisement\n") | |
1025 | { | |
d62a17ae | 1026 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1027 | struct zebra_if *zif = ifp->info; | |
1028 | ||
1029 | if (if_is_loopback(ifp) | |
1030 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK)) { | |
1031 | vty_out(vty, | |
1032 | "Cannot configure IPv6 Router Advertisements on this interface\n"); | |
1033 | return CMD_WARNING_CONFIG_FAILED; | |
1034 | } | |
1035 | ||
1036 | ipv6_nd_suppress_ra_set(ifp, RA_ENABLE); | |
3ea48364 | 1037 | SET_FLAG(zif->rtadv.ra_configured, VTY_RA_CONFIGURED); |
d62a17ae | 1038 | return CMD_SUCCESS; |
718e3744 | 1039 | } |
1040 | ||
7cee1bb1 | 1041 | DEFUN (ipv6_nd_ra_interval_msec, |
1042 | ipv6_nd_ra_interval_msec_cmd, | |
6147e2c6 | 1043 | "ipv6 nd ra-interval msec (70-1800000)", |
7cee1bb1 | 1044 | "Interface IPv6 config commands\n" |
1045 | "Neighbor discovery\n" | |
1046 | "Router Advertisement interval\n" | |
3a2d747c | 1047 | "Router Advertisement interval in milliseconds\n" |
7cee1bb1 | 1048 | "Router Advertisement interval in milliseconds\n") |
1049 | { | |
d62a17ae | 1050 | int idx_number = 4; |
1051 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1052 | unsigned interval; | |
1053 | struct zebra_if *zif = ifp->info; | |
d62a17ae | 1054 | |
d62a17ae | 1055 | interval = strtoul(argv[idx_number]->arg, NULL, 10); |
1056 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
1057 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime * 1000)) { | |
1058 | vty_out(vty, | |
1059 | "This ra-interval would conflict with configured ra-lifetime!\n"); | |
1060 | return CMD_WARNING_CONFIG_FAILED; | |
1061 | } | |
1062 | ||
1063 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
a3be9fa1 | 1064 | zrouter.rtadv.adv_msec_if_count--; |
d62a17ae | 1065 | |
1066 | if (interval % 1000) | |
a3be9fa1 | 1067 | zrouter.rtadv.adv_msec_if_count++; |
d62a17ae | 1068 | |
3ea48364 | 1069 | SET_FLAG(zif->rtadv.ra_configured, VTY_RA_INTERVAL_CONFIGURED); |
d62a17ae | 1070 | zif->rtadv.MaxRtrAdvInterval = interval; |
1071 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
1072 | zif->rtadv.AdvIntervalTimer = 0; | |
1073 | ||
1074 | return CMD_SUCCESS; | |
7cee1bb1 | 1075 | } |
1076 | ||
718e3744 | 1077 | DEFUN (ipv6_nd_ra_interval, |
1078 | ipv6_nd_ra_interval_cmd, | |
6147e2c6 | 1079 | "ipv6 nd ra-interval (1-1800)", |
3e31cded | 1080 | "Interface IPv6 config commands\n" |
718e3744 | 1081 | "Neighbor discovery\n" |
1082 | "Router Advertisement interval\n" | |
1083 | "Router Advertisement interval in seconds\n") | |
1084 | { | |
d62a17ae | 1085 | int idx_number = 3; |
1086 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1087 | unsigned interval; | |
1088 | struct zebra_if *zif = ifp->info; | |
d62a17ae | 1089 | |
d62a17ae | 1090 | interval = strtoul(argv[idx_number]->arg, NULL, 10); |
1091 | if ((zif->rtadv.AdvDefaultLifetime != -1 | |
1092 | && interval > (unsigned)zif->rtadv.AdvDefaultLifetime)) { | |
1093 | vty_out(vty, | |
1094 | "This ra-interval would conflict with configured ra-lifetime!\n"); | |
1095 | return CMD_WARNING_CONFIG_FAILED; | |
1096 | } | |
1097 | ||
1098 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
a3be9fa1 | 1099 | zrouter.rtadv.adv_msec_if_count--; |
d62a17ae | 1100 | |
1101 | /* convert to milliseconds */ | |
1102 | interval = interval * 1000; | |
1103 | ||
3ea48364 | 1104 | SET_FLAG(zif->rtadv.ra_configured, VTY_RA_INTERVAL_CONFIGURED); |
d62a17ae | 1105 | zif->rtadv.MaxRtrAdvInterval = interval; |
1106 | zif->rtadv.MinRtrAdvInterval = 0.33 * interval; | |
1107 | zif->rtadv.AdvIntervalTimer = 0; | |
1108 | ||
1109 | return CMD_SUCCESS; | |
718e3744 | 1110 | } |
1111 | ||
1112 | DEFUN (no_ipv6_nd_ra_interval, | |
1113 | no_ipv6_nd_ra_interval_cmd, | |
34ccea1e | 1114 | "no ipv6 nd ra-interval [<(1-1800)|msec (1-1800000)>]", |
718e3744 | 1115 | NO_STR |
3e31cded | 1116 | "Interface IPv6 config commands\n" |
718e3744 | 1117 | "Neighbor discovery\n" |
34ccea1e QY |
1118 | "Router Advertisement interval\n" |
1119 | "Router Advertisement interval in seconds\n" | |
1120 | "Specify millisecond router advertisement interval\n" | |
1121 | "Router Advertisement interval in milliseconds\n") | |
718e3744 | 1122 | { |
d62a17ae | 1123 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1124 | struct zebra_if *zif = ifp->info; | |
d62a17ae | 1125 | |
1126 | if (zif->rtadv.MaxRtrAdvInterval % 1000) | |
a3be9fa1 | 1127 | zrouter.rtadv.adv_msec_if_count--; |
d62a17ae | 1128 | |
3ea48364 DS |
1129 | UNSET_FLAG(zif->rtadv.ra_configured, VTY_RA_INTERVAL_CONFIGURED); |
1130 | ||
1131 | if (CHECK_FLAG(zif->rtadv.ra_configured, BGP_RA_CONFIGURED)) | |
1132 | zif->rtadv.MaxRtrAdvInterval = 10000; | |
1133 | else | |
1134 | zif->rtadv.MaxRtrAdvInterval = RTADV_MAX_RTR_ADV_INTERVAL; | |
1135 | ||
d62a17ae | 1136 | zif->rtadv.AdvIntervalTimer = zif->rtadv.MaxRtrAdvInterval; |
3ea48364 | 1137 | zif->rtadv.MinRtrAdvInterval = RTADV_MIN_RTR_ADV_INTERVAL; |
d62a17ae | 1138 | |
1139 | return CMD_SUCCESS; | |
718e3744 | 1140 | } |
1141 | ||
1142 | DEFUN (ipv6_nd_ra_lifetime, | |
1143 | ipv6_nd_ra_lifetime_cmd, | |
6147e2c6 | 1144 | "ipv6 nd ra-lifetime (0-9000)", |
3e31cded | 1145 | "Interface IPv6 config commands\n" |
718e3744 | 1146 | "Neighbor discovery\n" |
1147 | "Router lifetime\n" | |
4afa50b3 | 1148 | "Router lifetime in seconds (0 stands for a non-default gw)\n") |
718e3744 | 1149 | { |
d62a17ae | 1150 | int idx_number = 3; |
1151 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1152 | struct zebra_if *zif = ifp->info; | |
1153 | int lifetime; | |
1154 | ||
1155 | lifetime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1156 | ||
1157 | /* The value to be placed in the Router Lifetime field | |
1158 | * of Router Advertisements sent from the interface, | |
1159 | * in seconds. MUST be either zero or between | |
1160 | * MaxRtrAdvInterval and 9000 seconds. -- RFC4861, 6.2.1 */ | |
1161 | if ((lifetime != 0 && lifetime * 1000 < zif->rtadv.MaxRtrAdvInterval)) { | |
1162 | vty_out(vty, | |
1163 | "This ra-lifetime would conflict with configured ra-interval\n"); | |
1164 | return CMD_WARNING_CONFIG_FAILED; | |
1165 | } | |
1166 | ||
1167 | zif->rtadv.AdvDefaultLifetime = lifetime; | |
1168 | ||
1169 | return CMD_SUCCESS; | |
718e3744 | 1170 | } |
1171 | ||
1172 | DEFUN (no_ipv6_nd_ra_lifetime, | |
1173 | no_ipv6_nd_ra_lifetime_cmd, | |
34ccea1e | 1174 | "no ipv6 nd ra-lifetime [(0-9000)]", |
718e3744 | 1175 | NO_STR |
3e31cded | 1176 | "Interface IPv6 config commands\n" |
718e3744 | 1177 | "Neighbor discovery\n" |
34ccea1e QY |
1178 | "Router lifetime\n" |
1179 | "Router lifetime in seconds (0 stands for a non-default gw)\n") | |
718e3744 | 1180 | { |
d62a17ae | 1181 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1182 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1183 | |
d62a17ae | 1184 | zif->rtadv.AdvDefaultLifetime = -1; |
718e3744 | 1185 | |
d62a17ae | 1186 | return CMD_SUCCESS; |
718e3744 | 1187 | } |
1188 | ||
1189 | DEFUN (ipv6_nd_reachable_time, | |
1190 | ipv6_nd_reachable_time_cmd, | |
6147e2c6 | 1191 | "ipv6 nd reachable-time (1-3600000)", |
3e31cded | 1192 | "Interface IPv6 config commands\n" |
718e3744 | 1193 | "Neighbor discovery\n" |
1194 | "Reachable time\n" | |
1195 | "Reachable time in milliseconds\n") | |
1196 | { | |
d62a17ae | 1197 | int idx_number = 3; |
1198 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1199 | struct zebra_if *zif = ifp->info; | |
1200 | zif->rtadv.AdvReachableTime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1201 | return CMD_SUCCESS; | |
718e3744 | 1202 | } |
1203 | ||
1204 | DEFUN (no_ipv6_nd_reachable_time, | |
1205 | no_ipv6_nd_reachable_time_cmd, | |
34ccea1e | 1206 | "no ipv6 nd reachable-time [(1-3600000)]", |
718e3744 | 1207 | NO_STR |
3e31cded | 1208 | "Interface IPv6 config commands\n" |
718e3744 | 1209 | "Neighbor discovery\n" |
34ccea1e QY |
1210 | "Reachable time\n" |
1211 | "Reachable time in milliseconds\n") | |
718e3744 | 1212 | { |
d62a17ae | 1213 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1214 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1215 | |
d62a17ae | 1216 | zif->rtadv.AdvReachableTime = 0; |
718e3744 | 1217 | |
d62a17ae | 1218 | return CMD_SUCCESS; |
718e3744 | 1219 | } |
1220 | ||
7cee1bb1 | 1221 | DEFUN (ipv6_nd_homeagent_preference, |
1222 | ipv6_nd_homeagent_preference_cmd, | |
6147e2c6 | 1223 | "ipv6 nd home-agent-preference (0-65535)", |
7cee1bb1 | 1224 | "Interface IPv6 config commands\n" |
1225 | "Neighbor discovery\n" | |
1226 | "Home Agent preference\n" | |
4afa50b3 | 1227 | "preference value (default is 0, least preferred)\n") |
7cee1bb1 | 1228 | { |
d62a17ae | 1229 | int idx_number = 3; |
1230 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1231 | struct zebra_if *zif = ifp->info; | |
1232 | zif->rtadv.HomeAgentPreference = | |
1233 | strtoul(argv[idx_number]->arg, NULL, 10); | |
1234 | return CMD_SUCCESS; | |
7cee1bb1 | 1235 | } |
1236 | ||
1237 | DEFUN (no_ipv6_nd_homeagent_preference, | |
1238 | no_ipv6_nd_homeagent_preference_cmd, | |
34ccea1e | 1239 | "no ipv6 nd home-agent-preference [(0-65535)]", |
7cee1bb1 | 1240 | NO_STR |
1241 | "Interface IPv6 config commands\n" | |
1242 | "Neighbor discovery\n" | |
34ccea1e QY |
1243 | "Home Agent preference\n" |
1244 | "preference value (default is 0, least preferred)\n") | |
7cee1bb1 | 1245 | { |
d62a17ae | 1246 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1247 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1248 | |
d62a17ae | 1249 | zif->rtadv.HomeAgentPreference = 0; |
7cee1bb1 | 1250 | |
d62a17ae | 1251 | return CMD_SUCCESS; |
7cee1bb1 | 1252 | } |
1253 | ||
1254 | DEFUN (ipv6_nd_homeagent_lifetime, | |
1255 | ipv6_nd_homeagent_lifetime_cmd, | |
6147e2c6 | 1256 | "ipv6 nd home-agent-lifetime (0-65520)", |
7cee1bb1 | 1257 | "Interface IPv6 config commands\n" |
1258 | "Neighbor discovery\n" | |
1259 | "Home Agent lifetime\n" | |
4afa50b3 | 1260 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") |
7cee1bb1 | 1261 | { |
d62a17ae | 1262 | int idx_number = 3; |
1263 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1264 | struct zebra_if *zif = ifp->info; | |
1265 | zif->rtadv.HomeAgentLifetime = strtoul(argv[idx_number]->arg, NULL, 10); | |
1266 | return CMD_SUCCESS; | |
7cee1bb1 | 1267 | } |
1268 | ||
1269 | DEFUN (no_ipv6_nd_homeagent_lifetime, | |
1270 | no_ipv6_nd_homeagent_lifetime_cmd, | |
34ccea1e | 1271 | "no ipv6 nd home-agent-lifetime [(0-65520)]", |
7cee1bb1 | 1272 | NO_STR |
1273 | "Interface IPv6 config commands\n" | |
1274 | "Neighbor discovery\n" | |
34ccea1e QY |
1275 | "Home Agent lifetime\n" |
1276 | "Home Agent lifetime in seconds (0 to track ra-lifetime)\n") | |
7cee1bb1 | 1277 | { |
d62a17ae | 1278 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1279 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1280 | |
d62a17ae | 1281 | zif->rtadv.HomeAgentLifetime = -1; |
7cee1bb1 | 1282 | |
d62a17ae | 1283 | return CMD_SUCCESS; |
7cee1bb1 | 1284 | } |
1285 | ||
718e3744 | 1286 | DEFUN (ipv6_nd_managed_config_flag, |
1287 | ipv6_nd_managed_config_flag_cmd, | |
1288 | "ipv6 nd managed-config-flag", | |
3e31cded | 1289 | "Interface IPv6 config commands\n" |
718e3744 | 1290 | "Neighbor discovery\n" |
1291 | "Managed address configuration flag\n") | |
1292 | { | |
d62a17ae | 1293 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1294 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1295 | |
d62a17ae | 1296 | zif->rtadv.AdvManagedFlag = 1; |
718e3744 | 1297 | |
d62a17ae | 1298 | return CMD_SUCCESS; |
718e3744 | 1299 | } |
1300 | ||
1301 | DEFUN (no_ipv6_nd_managed_config_flag, | |
1302 | no_ipv6_nd_managed_config_flag_cmd, | |
1303 | "no ipv6 nd managed-config-flag", | |
1304 | NO_STR | |
3e31cded | 1305 | "Interface IPv6 config commands\n" |
718e3744 | 1306 | "Neighbor discovery\n" |
1307 | "Managed address configuration flag\n") | |
1308 | { | |
d62a17ae | 1309 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1310 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1311 | |
d62a17ae | 1312 | zif->rtadv.AdvManagedFlag = 0; |
718e3744 | 1313 | |
d62a17ae | 1314 | return CMD_SUCCESS; |
718e3744 | 1315 | } |
1316 | ||
7cee1bb1 | 1317 | DEFUN (ipv6_nd_homeagent_config_flag, |
1318 | ipv6_nd_homeagent_config_flag_cmd, | |
1319 | "ipv6 nd home-agent-config-flag", | |
1320 | "Interface IPv6 config commands\n" | |
1321 | "Neighbor discovery\n" | |
1322 | "Home Agent configuration flag\n") | |
1323 | { | |
d62a17ae | 1324 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1325 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1326 | |
d62a17ae | 1327 | zif->rtadv.AdvHomeAgentFlag = 1; |
7cee1bb1 | 1328 | |
d62a17ae | 1329 | return CMD_SUCCESS; |
7cee1bb1 | 1330 | } |
1331 | ||
1332 | DEFUN (no_ipv6_nd_homeagent_config_flag, | |
1333 | no_ipv6_nd_homeagent_config_flag_cmd, | |
1334 | "no ipv6 nd home-agent-config-flag", | |
1335 | NO_STR | |
1336 | "Interface IPv6 config commands\n" | |
1337 | "Neighbor discovery\n" | |
1338 | "Home Agent configuration flag\n") | |
1339 | { | |
d62a17ae | 1340 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1341 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1342 | |
d62a17ae | 1343 | zif->rtadv.AdvHomeAgentFlag = 0; |
7cee1bb1 | 1344 | |
d62a17ae | 1345 | return CMD_SUCCESS; |
7cee1bb1 | 1346 | } |
1347 | ||
1348 | DEFUN (ipv6_nd_adv_interval_config_option, | |
1349 | ipv6_nd_adv_interval_config_option_cmd, | |
1350 | "ipv6 nd adv-interval-option", | |
1351 | "Interface IPv6 config commands\n" | |
1352 | "Neighbor discovery\n" | |
1353 | "Advertisement Interval Option\n") | |
1354 | { | |
d62a17ae | 1355 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1356 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1357 | |
d62a17ae | 1358 | zif->rtadv.AdvIntervalOption = 1; |
7cee1bb1 | 1359 | |
d62a17ae | 1360 | return CMD_SUCCESS; |
7cee1bb1 | 1361 | } |
1362 | ||
1363 | DEFUN (no_ipv6_nd_adv_interval_config_option, | |
1364 | no_ipv6_nd_adv_interval_config_option_cmd, | |
1365 | "no ipv6 nd adv-interval-option", | |
1366 | NO_STR | |
1367 | "Interface IPv6 config commands\n" | |
1368 | "Neighbor discovery\n" | |
1369 | "Advertisement Interval Option\n") | |
1370 | { | |
d62a17ae | 1371 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1372 | struct zebra_if *zif = ifp->info; | |
7cee1bb1 | 1373 | |
d62a17ae | 1374 | zif->rtadv.AdvIntervalOption = 0; |
7cee1bb1 | 1375 | |
d62a17ae | 1376 | return CMD_SUCCESS; |
7cee1bb1 | 1377 | } |
1378 | ||
718e3744 | 1379 | DEFUN (ipv6_nd_other_config_flag, |
1380 | ipv6_nd_other_config_flag_cmd, | |
1381 | "ipv6 nd other-config-flag", | |
3e31cded | 1382 | "Interface IPv6 config commands\n" |
718e3744 | 1383 | "Neighbor discovery\n" |
1384 | "Other statefull configuration flag\n") | |
1385 | { | |
d62a17ae | 1386 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1387 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1388 | |
d62a17ae | 1389 | zif->rtadv.AdvOtherConfigFlag = 1; |
718e3744 | 1390 | |
d62a17ae | 1391 | return CMD_SUCCESS; |
718e3744 | 1392 | } |
1393 | ||
1394 | DEFUN (no_ipv6_nd_other_config_flag, | |
1395 | no_ipv6_nd_other_config_flag_cmd, | |
1396 | "no ipv6 nd other-config-flag", | |
1397 | NO_STR | |
3e31cded | 1398 | "Interface IPv6 config commands\n" |
718e3744 | 1399 | "Neighbor discovery\n" |
1400 | "Other statefull configuration flag\n") | |
1401 | { | |
d62a17ae | 1402 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1403 | struct zebra_if *zif = ifp->info; | |
718e3744 | 1404 | |
d62a17ae | 1405 | zif->rtadv.AdvOtherConfigFlag = 0; |
718e3744 | 1406 | |
d62a17ae | 1407 | return CMD_SUCCESS; |
718e3744 | 1408 | } |
1409 | ||
3e31cded | 1410 | DEFUN (ipv6_nd_prefix, |
1411 | ipv6_nd_prefix_cmd, | |
34ccea1e | 1412 | "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 | 1413 | "Interface IPv6 config commands\n" |
718e3744 | 1414 | "Neighbor discovery\n" |
1415 | "Prefix information\n" | |
1416 | "IPv6 prefix\n" | |
1417 | "Valid lifetime in seconds\n" | |
3e31cded | 1418 | "Infinite valid lifetime\n" |
718e3744 | 1419 | "Preferred lifetime in seconds\n" |
3e31cded | 1420 | "Infinite preferred lifetime\n" |
34ccea1e | 1421 | "Set Router Address flag\n" |
3e31cded | 1422 | "Do not use prefix for onlink determination\n" |
7cee1bb1 | 1423 | "Do not use prefix for autoconfiguration\n" |
34ccea1e QY |
1424 | "Do not use prefix for autoconfiguration\n" |
1425 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1426 | { |
d62a17ae | 1427 | /* prelude */ |
1428 | char *prefix = argv[3]->arg; | |
9d303b37 DL |
1429 | int lifetimes = (argc > 4) && (argv[4]->type == RANGE_TKN |
1430 | || strmatch(argv[4]->text, "infinite")); | |
d62a17ae | 1431 | int routeropts = lifetimes ? argc > 6 : argc > 4; |
1432 | ||
1433 | int idx_routeropts = routeropts ? (lifetimes ? 6 : 4) : 0; | |
1434 | ||
1435 | char *lifetime = NULL, *preflifetime = NULL; | |
1436 | int routeraddr = 0, offlink = 0, noautoconf = 0; | |
1437 | if (lifetimes) { | |
1438 | lifetime = argv[4]->type == RANGE_TKN ? argv[4]->arg | |
1439 | : argv[4]->text; | |
1440 | preflifetime = argv[5]->type == RANGE_TKN ? argv[5]->arg | |
1441 | : argv[5]->text; | |
1442 | } | |
1443 | if (routeropts) { | |
1444 | routeraddr = | |
1445 | strmatch(argv[idx_routeropts]->text, "router-address"); | |
1446 | if (!routeraddr) { | |
1447 | offlink = (argc > idx_routeropts + 1 | |
1448 | || strmatch(argv[idx_routeropts]->text, | |
1449 | "off-link")); | |
1450 | noautoconf = (argc > idx_routeropts + 1 | |
1451 | || strmatch(argv[idx_routeropts]->text, | |
1452 | "no-autoconfig")); | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | /* business */ | |
1457 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1458 | struct zebra_if *zebra_if = ifp->info; | |
1459 | int ret; | |
1460 | struct rtadv_prefix rp; | |
1461 | ||
1462 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1463 | if (!ret) { | |
1464 | vty_out(vty, "Malformed IPv6 prefix\n"); | |
1465 | return CMD_WARNING_CONFIG_FAILED; | |
1466 | } | |
1467 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1468 | rp.AdvOnLinkFlag = !offlink; | |
1469 | rp.AdvAutonomousFlag = !noautoconf; | |
1470 | rp.AdvRouterAddressFlag = routeraddr; | |
1471 | rp.AdvValidLifetime = RTADV_VALID_LIFETIME; | |
1472 | rp.AdvPreferredLifetime = RTADV_PREFERRED_LIFETIME; | |
1473 | ||
1474 | if (lifetimes) { | |
1475 | rp.AdvValidLifetime = strmatch(lifetime, "infinite") | |
1476 | ? UINT32_MAX | |
1477 | : strtoll(lifetime, NULL, 10); | |
1478 | rp.AdvPreferredLifetime = | |
1479 | strmatch(preflifetime, "infinite") | |
1480 | ? UINT32_MAX | |
1481 | : strtoll(preflifetime, NULL, 10); | |
1482 | if (rp.AdvPreferredLifetime > rp.AdvValidLifetime) { | |
1483 | vty_out(vty, "Invalid preferred lifetime\n"); | |
1484 | return CMD_WARNING_CONFIG_FAILED; | |
1485 | } | |
1486 | } | |
1487 | ||
1488 | rtadv_prefix_set(zebra_if, &rp); | |
1489 | ||
1490 | return CMD_SUCCESS; | |
718e3744 | 1491 | } |
1492 | ||
3e31cded | 1493 | DEFUN (no_ipv6_nd_prefix, |
1494 | no_ipv6_nd_prefix_cmd, | |
34ccea1e QY |
1495 | "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]>]", |
1496 | NO_STR | |
3e31cded | 1497 | "Interface IPv6 config commands\n" |
718e3744 | 1498 | "Neighbor discovery\n" |
1499 | "Prefix information\n" | |
34ccea1e QY |
1500 | "IPv6 prefix\n" |
1501 | "Valid lifetime in seconds\n" | |
1502 | "Infinite valid lifetime\n" | |
1503 | "Preferred lifetime in seconds\n" | |
1504 | "Infinite preferred lifetime\n" | |
1505 | "Set Router Address flag\n" | |
1506 | "Do not use prefix for onlink determination\n" | |
1507 | "Do not use prefix for autoconfiguration\n" | |
1508 | "Do not use prefix for autoconfiguration\n" | |
1509 | "Do not use prefix for onlink determination\n") | |
718e3744 | 1510 | { |
d62a17ae | 1511 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1512 | struct zebra_if *zebra_if = ifp->info; | |
1513 | int ret; | |
1514 | struct rtadv_prefix rp; | |
1515 | char *prefix = argv[4]->arg; | |
1516 | ||
1517 | ret = str2prefix_ipv6(prefix, &rp.prefix); | |
1518 | if (!ret) { | |
1519 | vty_out(vty, "Malformed IPv6 prefix\n"); | |
1520 | return CMD_WARNING_CONFIG_FAILED; | |
1521 | } | |
1522 | apply_mask_ipv6(&rp.prefix); /* RFC4861 4.6.2 */ | |
1523 | ||
1524 | ret = rtadv_prefix_reset(zebra_if, &rp); | |
1525 | if (!ret) { | |
1526 | vty_out(vty, "Non-existant IPv6 prefix\n"); | |
1527 | return CMD_WARNING_CONFIG_FAILED; | |
1528 | } | |
1529 | ||
1530 | return CMD_SUCCESS; | |
718e3744 | 1531 | } |
b60668d0 CC |
1532 | |
1533 | DEFUN (ipv6_nd_router_preference, | |
1534 | ipv6_nd_router_preference_cmd, | |
6147e2c6 | 1535 | "ipv6 nd router-preference <high|medium|low>", |
b60668d0 CC |
1536 | "Interface IPv6 config commands\n" |
1537 | "Neighbor discovery\n" | |
1538 | "Default router preference\n" | |
1539 | "High default router preference\n" | |
58f1b7cc DS |
1540 | "Medium default router preference (default)\n" |
1541 | "Low default router preference\n") | |
b60668d0 | 1542 | { |
d62a17ae | 1543 | int idx_high_medium_low = 3; |
1544 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1545 | struct zebra_if *zif = ifp->info; | |
1546 | int i = 0; | |
1547 | ||
1548 | while (0 != rtadv_pref_strs[i]) { | |
1549 | if (strncmp(argv[idx_high_medium_low]->arg, rtadv_pref_strs[i], | |
1550 | 1) | |
1551 | == 0) { | |
1552 | zif->rtadv.DefaultPreference = i; | |
1553 | return CMD_SUCCESS; | |
1554 | } | |
1555 | i++; | |
b60668d0 | 1556 | } |
b60668d0 | 1557 | |
d62a17ae | 1558 | return CMD_ERR_NO_MATCH; |
b60668d0 CC |
1559 | } |
1560 | ||
1561 | DEFUN (no_ipv6_nd_router_preference, | |
1562 | no_ipv6_nd_router_preference_cmd, | |
34ccea1e | 1563 | "no ipv6 nd router-preference [<high|medium|low>]", |
b60668d0 CC |
1564 | NO_STR |
1565 | "Interface IPv6 config commands\n" | |
1566 | "Neighbor discovery\n" | |
34ccea1e QY |
1567 | "Default router preference\n" |
1568 | "High default router preference\n" | |
1569 | "Medium default router preference (default)\n" | |
1570 | "Low default router preference\n") | |
b60668d0 | 1571 | { |
d62a17ae | 1572 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1573 | struct zebra_if *zif = ifp->info; | |
b60668d0 | 1574 | |
d62a17ae | 1575 | zif->rtadv.DefaultPreference = |
1576 | RTADV_PREF_MEDIUM; /* Default per RFC4191. */ | |
b60668d0 | 1577 | |
d62a17ae | 1578 | return CMD_SUCCESS; |
b60668d0 CC |
1579 | } |
1580 | ||
6ae93c05 DO |
1581 | DEFUN (ipv6_nd_mtu, |
1582 | ipv6_nd_mtu_cmd, | |
6147e2c6 | 1583 | "ipv6 nd mtu (1-65535)", |
6ae93c05 DO |
1584 | "Interface IPv6 config commands\n" |
1585 | "Neighbor discovery\n" | |
1586 | "Advertised MTU\n" | |
1587 | "MTU in bytes\n") | |
1588 | { | |
d62a17ae | 1589 | int idx_number = 3; |
1590 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1591 | struct zebra_if *zif = ifp->info; | |
1592 | zif->rtadv.AdvLinkMTU = strtoul(argv[idx_number]->arg, NULL, 10); | |
1593 | return CMD_SUCCESS; | |
6ae93c05 DO |
1594 | } |
1595 | ||
1596 | DEFUN (no_ipv6_nd_mtu, | |
1597 | no_ipv6_nd_mtu_cmd, | |
34ccea1e | 1598 | "no ipv6 nd mtu [(1-65535)]", |
6ae93c05 DO |
1599 | NO_STR |
1600 | "Interface IPv6 config commands\n" | |
1601 | "Neighbor discovery\n" | |
34ccea1e QY |
1602 | "Advertised MTU\n" |
1603 | "MTU in bytes\n") | |
6ae93c05 | 1604 | { |
d62a17ae | 1605 | VTY_DECLVAR_CONTEXT(interface, ifp); |
1606 | struct zebra_if *zif = ifp->info; | |
1607 | zif->rtadv.AdvLinkMTU = 0; | |
1608 | return CMD_SUCCESS; | |
6ae93c05 DO |
1609 | } |
1610 | ||
3eb4fbb0 LS |
1611 | static struct rtadv_rdnss *rtadv_rdnss_new(void) |
1612 | { | |
1613 | return XCALLOC(MTYPE_RTADV_RDNSS, sizeof(struct rtadv_rdnss)); | |
1614 | } | |
1615 | ||
1616 | static void rtadv_rdnss_free(struct rtadv_rdnss *rdnss) | |
1617 | { | |
1618 | XFREE(MTYPE_RTADV_RDNSS, rdnss); | |
1619 | } | |
1620 | ||
1621 | static struct rtadv_rdnss *rtadv_rdnss_lookup(struct list *list, | |
1622 | struct rtadv_rdnss *rdnss) | |
1623 | { | |
1624 | struct listnode *node; | |
1625 | struct rtadv_rdnss *p; | |
1626 | ||
1627 | for (ALL_LIST_ELEMENTS_RO(list, node, p)) | |
1628 | if (IPV6_ADDR_SAME(&p->addr, &rdnss->addr)) | |
1629 | return p; | |
1630 | return NULL; | |
1631 | } | |
1632 | ||
1633 | static struct rtadv_rdnss *rtadv_rdnss_get(struct list *list, | |
1634 | struct rtadv_rdnss *rdnss) | |
1635 | { | |
1636 | struct rtadv_rdnss *p; | |
1637 | ||
1638 | p = rtadv_rdnss_lookup(list, rdnss); | |
1639 | if (p) | |
1640 | return p; | |
1641 | ||
1642 | p = rtadv_rdnss_new(); | |
1643 | memcpy(p, rdnss, sizeof(struct rtadv_rdnss)); | |
1644 | listnode_add(list, p); | |
1645 | ||
1646 | return p; | |
1647 | } | |
1648 | ||
1649 | static void rtadv_rdnss_set(struct zebra_if *zif, struct rtadv_rdnss *rdnss) | |
1650 | { | |
1651 | struct rtadv_rdnss *p; | |
1652 | ||
1653 | p = rtadv_rdnss_get(zif->rtadv.AdvRDNSSList, rdnss); | |
1654 | p->lifetime = rdnss->lifetime; | |
1655 | p->lifetime_set = rdnss->lifetime_set; | |
1656 | } | |
1657 | ||
1658 | static int rtadv_rdnss_reset(struct zebra_if *zif, struct rtadv_rdnss *rdnss) | |
1659 | { | |
1660 | struct rtadv_rdnss *p; | |
1661 | ||
1662 | p = rtadv_rdnss_lookup(zif->rtadv.AdvRDNSSList, rdnss); | |
1663 | if (p) { | |
1664 | listnode_delete(zif->rtadv.AdvRDNSSList, p); | |
1665 | rtadv_rdnss_free(p); | |
1666 | return 1; | |
1667 | } | |
1668 | ||
1669 | return 0; | |
1670 | } | |
1671 | ||
1672 | static struct rtadv_dnssl *rtadv_dnssl_new(void) | |
1673 | { | |
1674 | return XCALLOC(MTYPE_RTADV_DNSSL, sizeof(struct rtadv_dnssl)); | |
1675 | } | |
1676 | ||
1677 | static void rtadv_dnssl_free(struct rtadv_dnssl *dnssl) | |
1678 | { | |
1679 | XFREE(MTYPE_RTADV_DNSSL, dnssl); | |
1680 | } | |
1681 | ||
1682 | static struct rtadv_dnssl *rtadv_dnssl_lookup(struct list *list, | |
1683 | struct rtadv_dnssl *dnssl) | |
1684 | { | |
1685 | struct listnode *node; | |
1686 | struct rtadv_dnssl *p; | |
1687 | ||
1688 | for (ALL_LIST_ELEMENTS_RO(list, node, p)) | |
1689 | if (!strcasecmp(p->name, dnssl->name)) | |
1690 | return p; | |
1691 | return NULL; | |
1692 | } | |
1693 | ||
1694 | static struct rtadv_dnssl *rtadv_dnssl_get(struct list *list, | |
1695 | struct rtadv_dnssl *dnssl) | |
1696 | { | |
1697 | struct rtadv_dnssl *p; | |
1698 | ||
1699 | p = rtadv_dnssl_lookup(list, dnssl); | |
1700 | if (p) | |
1701 | return p; | |
1702 | ||
1703 | p = rtadv_dnssl_new(); | |
1704 | memcpy(p, dnssl, sizeof(struct rtadv_dnssl)); | |
1705 | listnode_add(list, p); | |
1706 | ||
1707 | return p; | |
1708 | } | |
1709 | ||
1710 | static void rtadv_dnssl_set(struct zebra_if *zif, struct rtadv_dnssl *dnssl) | |
1711 | { | |
1712 | struct rtadv_dnssl *p; | |
1713 | ||
1714 | p = rtadv_dnssl_get(zif->rtadv.AdvDNSSLList, dnssl); | |
1715 | memcpy(p, dnssl, sizeof(struct rtadv_dnssl)); | |
1716 | } | |
1717 | ||
1718 | static int rtadv_dnssl_reset(struct zebra_if *zif, struct rtadv_dnssl *dnssl) | |
1719 | { | |
1720 | struct rtadv_dnssl *p; | |
1721 | ||
1722 | p = rtadv_dnssl_lookup(zif->rtadv.AdvDNSSLList, dnssl); | |
1723 | if (p) { | |
1724 | listnode_delete(zif->rtadv.AdvDNSSLList, p); | |
1725 | rtadv_dnssl_free(p); | |
1726 | return 1; | |
1727 | } | |
1728 | ||
1729 | return 0; | |
1730 | } | |
1731 | ||
1732 | /* | |
1733 | * Convert dotted domain name (with or without trailing root zone dot) to | |
1734 | * sequence of length-prefixed labels, as described in [RFC1035 3.1]. Write up | |
1735 | * to strlen(in) + 2 octets to out. | |
1736 | * | |
1737 | * Returns the number of octets written to out or -1 if in does not constitute | |
1738 | * a valid domain name. | |
1739 | */ | |
1740 | static int rtadv_dnssl_encode(uint8_t *out, const char *in) | |
1741 | { | |
1742 | const char *label_start, *label_end; | |
1743 | size_t outp; | |
1744 | ||
1745 | outp = 0; | |
1746 | label_start = in; | |
1747 | ||
1748 | while (*label_start) { | |
1749 | size_t label_len; | |
1750 | ||
1751 | label_end = strchr(label_start, '.'); | |
1752 | if (label_end == NULL) | |
1753 | label_end = label_start + strlen(label_start); | |
1754 | ||
1755 | label_len = label_end - label_start; | |
1756 | if (label_len >= 64) | |
1757 | return -1; /* labels must be 63 octets or less */ | |
1758 | ||
1759 | out[outp++] = (uint8_t)label_len; | |
1760 | memcpy(out + outp, label_start, label_len); | |
1761 | outp += label_len; | |
1762 | label_start += label_len; | |
1763 | if (*label_start == '.') | |
1764 | label_start++; | |
1765 | } | |
1766 | ||
1767 | out[outp++] = '\0'; | |
1768 | return outp; | |
1769 | } | |
1770 | ||
1771 | DEFUN(ipv6_nd_rdnss, | |
1772 | ipv6_nd_rdnss_cmd, | |
1773 | "ipv6 nd rdnss X:X::X:X [<(0-4294967295)|infinite>]", | |
1774 | "Interface IPv6 config commands\n" | |
1775 | "Neighbor discovery\n" | |
1776 | "Recursive DNS server information\n" | |
1777 | "IPv6 address\n" | |
1778 | "Valid lifetime in seconds\n" | |
1779 | "Infinite valid lifetime\n") | |
1780 | { | |
1781 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1782 | struct zebra_if *zif = ifp->info; | |
1783 | struct rtadv_rdnss rdnss = {0}; | |
1784 | ||
1785 | if (inet_pton(AF_INET6, argv[3]->arg, &rdnss.addr) != 1) { | |
1786 | vty_out(vty, "Malformed IPv6 address\n"); | |
1787 | return CMD_WARNING_CONFIG_FAILED; | |
1788 | } | |
1789 | if (argc > 4) { | |
1790 | char *lifetime = argv[4]->type == RANGE_TKN ? argv[4]->arg | |
1791 | : argv[4]->text; | |
1792 | rdnss.lifetime = strmatch(lifetime, "infinite") | |
1793 | ? UINT32_MAX | |
1794 | : strtoll(lifetime, NULL, 10); | |
1795 | rdnss.lifetime_set = 1; | |
1796 | } | |
1797 | ||
1798 | rtadv_rdnss_set(zif, &rdnss); | |
1799 | ||
1800 | return CMD_SUCCESS; | |
1801 | } | |
1802 | ||
1803 | DEFUN(no_ipv6_nd_rdnss, | |
1804 | no_ipv6_nd_rdnss_cmd, | |
1805 | "no ipv6 nd rdnss X:X::X:X [<(0-4294967295)|infinite>]", | |
1806 | NO_STR | |
1807 | "Interface IPv6 config commands\n" | |
1808 | "Neighbor discovery\n" | |
1809 | "Recursive DNS server information\n" | |
1810 | "IPv6 address\n" | |
1811 | "Valid lifetime in seconds\n" | |
1812 | "Infinite valid lifetime\n") | |
1813 | { | |
1814 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1815 | struct zebra_if *zif = ifp->info; | |
1816 | struct rtadv_rdnss rdnss = {0}; | |
1817 | ||
1818 | if (inet_pton(AF_INET6, argv[4]->arg, &rdnss.addr) != 1) { | |
1819 | vty_out(vty, "Malformed IPv6 address\n"); | |
1820 | return CMD_WARNING_CONFIG_FAILED; | |
1821 | } | |
1822 | if (rtadv_rdnss_reset(zif, &rdnss) != 1) { | |
1823 | vty_out(vty, "Non-existant RDNSS address\n"); | |
1824 | return CMD_WARNING_CONFIG_FAILED; | |
1825 | } | |
1826 | ||
1827 | return CMD_SUCCESS; | |
1828 | } | |
1829 | ||
1830 | DEFUN(ipv6_nd_dnssl, | |
1831 | ipv6_nd_dnssl_cmd, | |
1832 | "ipv6 nd dnssl SUFFIX [<(0-4294967295)|infinite>]", | |
1833 | "Interface IPv6 config commands\n" | |
1834 | "Neighbor discovery\n" | |
1835 | "DNS search list information\n" | |
1836 | "Domain name suffix\n" | |
1837 | "Valid lifetime in seconds\n" | |
1838 | "Infinite valid lifetime\n") | |
1839 | { | |
1840 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1841 | struct zebra_if *zif = ifp->info; | |
1842 | struct rtadv_dnssl dnssl = {0}; | |
1843 | size_t len; | |
1844 | int ret; | |
1845 | ||
1846 | len = strlcpy(dnssl.name, argv[3]->arg, sizeof(dnssl.name)); | |
1847 | if (len == 0 || len >= sizeof(dnssl.name)) { | |
1848 | vty_out(vty, "Malformed DNS search domain\n"); | |
1849 | return CMD_WARNING_CONFIG_FAILED; | |
1850 | } | |
1851 | if (dnssl.name[len - 1] == '.') { | |
1852 | /* | |
1853 | * Allow, but don't require, a trailing dot signifying the root | |
1854 | * zone. Canonicalize by cutting it off if present. | |
1855 | */ | |
1856 | dnssl.name[len - 1] = '\0'; | |
1857 | len--; | |
1858 | } | |
1859 | if (argc > 4) { | |
1860 | char *lifetime = argv[4]->type == RANGE_TKN ? argv[4]->arg | |
1861 | : argv[4]->text; | |
1862 | dnssl.lifetime = strmatch(lifetime, "infinite") | |
1863 | ? UINT32_MAX | |
1864 | : strtoll(lifetime, NULL, 10); | |
1865 | dnssl.lifetime_set = 1; | |
1866 | } | |
1867 | ||
1868 | ret = rtadv_dnssl_encode(dnssl.encoded_name, dnssl.name); | |
1869 | if (ret < 0) { | |
1870 | vty_out(vty, "Malformed DNS search domain\n"); | |
1871 | return CMD_WARNING_CONFIG_FAILED; | |
1872 | } | |
1873 | dnssl.encoded_len = ret; | |
1874 | rtadv_dnssl_set(zif, &dnssl); | |
1875 | ||
1876 | return CMD_SUCCESS; | |
1877 | } | |
1878 | ||
1879 | DEFUN(no_ipv6_nd_dnssl, | |
1880 | no_ipv6_nd_dnssl_cmd, | |
1881 | "no ipv6 nd dnssl SUFFIX [<(0-4294967295)|infinite>]", | |
1882 | NO_STR | |
1883 | "Interface IPv6 config commands\n" | |
1884 | "Neighbor discovery\n" | |
1885 | "DNS search list information\n" | |
1886 | "Domain name suffix\n" | |
1887 | "Valid lifetime in seconds\n" | |
1888 | "Infinite valid lifetime\n") | |
1889 | { | |
1890 | VTY_DECLVAR_CONTEXT(interface, ifp); | |
1891 | struct zebra_if *zif = ifp->info; | |
1892 | struct rtadv_dnssl dnssl = {0}; | |
1893 | size_t len; | |
1894 | ||
1895 | len = strlcpy(dnssl.name, argv[4]->arg, sizeof(dnssl.name)); | |
1896 | if (len == 0 || len >= sizeof(dnssl.name)) { | |
1897 | vty_out(vty, "Malformed DNS search domain\n"); | |
1898 | return CMD_WARNING_CONFIG_FAILED; | |
1899 | } | |
1900 | if (dnssl.name[len - 1] == '.') { | |
1901 | dnssl.name[len - 1] = '\0'; | |
1902 | len--; | |
1903 | } | |
1904 | if (rtadv_dnssl_reset(zif, &dnssl) != 1) { | |
1905 | vty_out(vty, "Non-existant DNS search domain\n"); | |
1906 | return CMD_WARNING_CONFIG_FAILED; | |
1907 | } | |
1908 | ||
1909 | return CMD_SUCCESS; | |
1910 | } | |
1911 | ||
1912 | ||
2eb27eec DL |
1913 | /* Dump interface ND information to vty. */ |
1914 | static int nd_dump_vty(struct vty *vty, struct interface *ifp) | |
1915 | { | |
1916 | struct zebra_if *zif; | |
1917 | struct rtadvconf *rtadv; | |
1918 | int interval; | |
1919 | ||
1920 | zif = (struct zebra_if *)ifp->info; | |
1921 | rtadv = &zif->rtadv; | |
1922 | ||
1923 | if (rtadv->AdvSendAdvertisements) { | |
1924 | vty_out(vty, | |
1925 | " ND advertised reachable time is %d milliseconds\n", | |
1926 | rtadv->AdvReachableTime); | |
1927 | vty_out(vty, | |
1928 | " ND advertised retransmit interval is %d milliseconds\n", | |
1929 | rtadv->AdvRetransTimer); | |
1930 | vty_out(vty, " ND router advertisements sent: %d rcvd: %d\n", | |
1931 | zif->ra_sent, zif->ra_rcvd); | |
1932 | interval = rtadv->MaxRtrAdvInterval; | |
1933 | if (interval % 1000) | |
1934 | vty_out(vty, | |
1935 | " ND router advertisements are sent every " | |
1936 | "%d milliseconds\n", | |
1937 | interval); | |
1938 | else | |
1939 | vty_out(vty, | |
1940 | " ND router advertisements are sent every " | |
1941 | "%d seconds\n", | |
1942 | interval / 1000); | |
1943 | if (rtadv->AdvDefaultLifetime != -1) | |
1944 | vty_out(vty, | |
1945 | " ND router advertisements live for %d seconds\n", | |
1946 | rtadv->AdvDefaultLifetime); | |
1947 | else | |
1948 | vty_out(vty, | |
1949 | " ND router advertisements lifetime tracks ra-interval\n"); | |
1950 | vty_out(vty, | |
1951 | " ND router advertisement default router preference is " | |
1952 | "%s\n", | |
1953 | rtadv_pref_strs[rtadv->DefaultPreference]); | |
1954 | if (rtadv->AdvManagedFlag) | |
1955 | vty_out(vty, | |
1956 | " Hosts use DHCP to obtain routable addresses.\n"); | |
1957 | else | |
1958 | vty_out(vty, | |
1959 | " Hosts use stateless autoconfig for addresses.\n"); | |
1960 | if (rtadv->AdvHomeAgentFlag) { | |
1961 | vty_out(vty, | |
1962 | " ND router advertisements with Home Agent flag bit set.\n"); | |
1963 | if (rtadv->HomeAgentLifetime != -1) | |
1964 | vty_out(vty, | |
1965 | " Home Agent lifetime is %u seconds\n", | |
1966 | rtadv->HomeAgentLifetime); | |
1967 | else | |
1968 | vty_out(vty, | |
1969 | " Home Agent lifetime tracks ra-lifetime\n"); | |
1970 | vty_out(vty, " Home Agent preference is %u\n", | |
1971 | rtadv->HomeAgentPreference); | |
1972 | } | |
1973 | if (rtadv->AdvIntervalOption) | |
1974 | vty_out(vty, | |
1975 | " ND router advertisements with Adv. Interval option.\n"); | |
1976 | } | |
1977 | return 0; | |
1978 | } | |
1979 | ||
6ae93c05 | 1980 | |
718e3744 | 1981 | /* Write configuration about router advertisement. */ |
2eb27eec | 1982 | static int rtadv_config_write(struct vty *vty, struct interface *ifp) |
718e3744 | 1983 | { |
d62a17ae | 1984 | struct zebra_if *zif; |
1985 | struct listnode *node; | |
1986 | struct rtadv_prefix *rprefix; | |
3eb4fbb0 LS |
1987 | struct rtadv_rdnss *rdnss; |
1988 | struct rtadv_dnssl *dnssl; | |
d62a17ae | 1989 | char buf[PREFIX_STRLEN]; |
1990 | int interval; | |
1991 | ||
1992 | zif = ifp->info; | |
1993 | ||
1994 | if (!(if_is_loopback(ifp) | |
1995 | || CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK))) { | |
3ea48364 DS |
1996 | if (zif->rtadv.AdvSendAdvertisements |
1997 | && CHECK_FLAG(zif->rtadv.ra_configured, VTY_RA_CONFIGURED)) | |
d62a17ae | 1998 | vty_out(vty, " no ipv6 nd suppress-ra\n"); |
1999 | } | |
2000 | ||
2001 | interval = zif->rtadv.MaxRtrAdvInterval; | |
3ea48364 DS |
2002 | if (CHECK_FLAG(zif->rtadv.ra_configured, VTY_RA_INTERVAL_CONFIGURED)) { |
2003 | if (interval % 1000) | |
2004 | vty_out(vty, " ipv6 nd ra-interval msec %d\n", | |
2005 | interval); | |
2006 | else if (interval != RTADV_MAX_RTR_ADV_INTERVAL) | |
2007 | vty_out(vty, " ipv6 nd ra-interval %d\n", | |
2008 | interval / 1000); | |
2009 | } | |
d62a17ae | 2010 | |
2011 | if (zif->rtadv.AdvIntervalOption) | |
2012 | vty_out(vty, " ipv6 nd adv-interval-option\n"); | |
2013 | ||
2014 | if (zif->rtadv.AdvDefaultLifetime != -1) | |
2015 | vty_out(vty, " ipv6 nd ra-lifetime %d\n", | |
2016 | zif->rtadv.AdvDefaultLifetime); | |
2017 | ||
2018 | if (zif->rtadv.HomeAgentPreference) | |
2019 | vty_out(vty, " ipv6 nd home-agent-preference %u\n", | |
2020 | zif->rtadv.HomeAgentPreference); | |
2021 | ||
2022 | if (zif->rtadv.HomeAgentLifetime != -1) | |
2023 | vty_out(vty, " ipv6 nd home-agent-lifetime %u\n", | |
2024 | zif->rtadv.HomeAgentLifetime); | |
2025 | ||
2026 | if (zif->rtadv.AdvHomeAgentFlag) | |
2027 | vty_out(vty, " ipv6 nd home-agent-config-flag\n"); | |
2028 | ||
2029 | if (zif->rtadv.AdvReachableTime) | |
2030 | vty_out(vty, " ipv6 nd reachable-time %d\n", | |
2031 | zif->rtadv.AdvReachableTime); | |
2032 | ||
2033 | if (zif->rtadv.AdvManagedFlag) | |
2034 | vty_out(vty, " ipv6 nd managed-config-flag\n"); | |
2035 | ||
2036 | if (zif->rtadv.AdvOtherConfigFlag) | |
2037 | vty_out(vty, " ipv6 nd other-config-flag\n"); | |
2038 | ||
2039 | if (zif->rtadv.DefaultPreference != RTADV_PREF_MEDIUM) | |
2040 | vty_out(vty, " ipv6 nd router-preference %s\n", | |
2041 | rtadv_pref_strs[zif->rtadv.DefaultPreference]); | |
2042 | ||
2043 | if (zif->rtadv.AdvLinkMTU) | |
2044 | vty_out(vty, " ipv6 nd mtu %d\n", zif->rtadv.AdvLinkMTU); | |
2045 | ||
2046 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) { | |
2047 | vty_out(vty, " ipv6 nd prefix %s", | |
2048 | prefix2str(&rprefix->prefix, buf, sizeof(buf))); | |
2049 | if ((rprefix->AdvValidLifetime != RTADV_VALID_LIFETIME) | |
2050 | || (rprefix->AdvPreferredLifetime | |
2051 | != RTADV_PREFERRED_LIFETIME)) { | |
2052 | if (rprefix->AdvValidLifetime == UINT32_MAX) | |
2053 | vty_out(vty, " infinite"); | |
2054 | else | |
2055 | vty_out(vty, " %u", rprefix->AdvValidLifetime); | |
2056 | if (rprefix->AdvPreferredLifetime == UINT32_MAX) | |
2057 | vty_out(vty, " infinite"); | |
2058 | else | |
2059 | vty_out(vty, " %u", | |
2060 | rprefix->AdvPreferredLifetime); | |
2061 | } | |
2062 | if (!rprefix->AdvOnLinkFlag) | |
2063 | vty_out(vty, " off-link"); | |
2064 | if (!rprefix->AdvAutonomousFlag) | |
2065 | vty_out(vty, " no-autoconfig"); | |
2066 | if (rprefix->AdvRouterAddressFlag) | |
2067 | vty_out(vty, " router-address"); | |
2068 | vty_out(vty, "\n"); | |
3e31cded | 2069 | } |
3eb4fbb0 LS |
2070 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvRDNSSList, node, rdnss)) { |
2071 | char buf[INET6_ADDRSTRLEN]; | |
2072 | ||
2073 | vty_out(vty, " ipv6 nd rdnss %s", | |
2074 | inet_ntop(AF_INET6, &rdnss->addr, buf, sizeof(buf))); | |
2075 | if (rdnss->lifetime_set) { | |
2076 | if (rdnss->lifetime == UINT32_MAX) | |
2077 | vty_out(vty, " infinite"); | |
2078 | else | |
2079 | vty_out(vty, " %u", rdnss->lifetime); | |
2080 | } | |
2081 | vty_out(vty, "\n"); | |
2082 | } | |
2083 | for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvDNSSLList, node, dnssl)) { | |
2084 | vty_out(vty, " ipv6 nd dnssl %s", dnssl->name); | |
2085 | if (dnssl->lifetime_set) { | |
2086 | if (dnssl->lifetime == UINT32_MAX) | |
2087 | vty_out(vty, " infinite"); | |
2088 | else | |
2089 | vty_out(vty, " %u", dnssl->lifetime); | |
2090 | } | |
2091 | vty_out(vty, "\n"); | |
2092 | } | |
2eb27eec | 2093 | return 0; |
718e3744 | 2094 | } |
2095 | ||
718e3744 | 2096 | |
d62a17ae | 2097 | static void rtadv_event(struct zebra_ns *zns, enum rtadv_event event, int val) |
718e3744 | 2098 | { |
a3be9fa1 | 2099 | struct rtadv *rtadv = &zrouter.rtadv; |
d62a17ae | 2100 | |
2101 | switch (event) { | |
2102 | case RTADV_START: | |
3801e764 | 2103 | thread_add_read(zrouter.master, rtadv_read, zns, val, |
d62a17ae | 2104 | &rtadv->ra_read); |
3801e764 | 2105 | thread_add_event(zrouter.master, rtadv_timer, zns, 0, |
d62a17ae | 2106 | &rtadv->ra_timer); |
2107 | break; | |
2108 | case RTADV_STOP: | |
2109 | if (rtadv->ra_timer) { | |
2110 | thread_cancel(rtadv->ra_timer); | |
2111 | rtadv->ra_timer = NULL; | |
2112 | } | |
2113 | if (rtadv->ra_read) { | |
2114 | thread_cancel(rtadv->ra_read); | |
2115 | rtadv->ra_read = NULL; | |
2116 | } | |
2117 | break; | |
2118 | case RTADV_TIMER: | |
3801e764 | 2119 | thread_add_timer(zrouter.master, rtadv_timer, zns, val, |
d62a17ae | 2120 | &rtadv->ra_timer); |
2121 | break; | |
2122 | case RTADV_TIMER_MSEC: | |
3801e764 | 2123 | thread_add_timer_msec(zrouter.master, rtadv_timer, zns, val, |
d62a17ae | 2124 | &rtadv->ra_timer); |
2125 | break; | |
2126 | case RTADV_READ: | |
3801e764 | 2127 | thread_add_read(zrouter.master, rtadv_read, zns, val, |
d62a17ae | 2128 | &rtadv->ra_read); |
2129 | break; | |
2130 | default: | |
2131 | break; | |
718e3744 | 2132 | } |
d62a17ae | 2133 | return; |
718e3744 | 2134 | } |
2135 | ||
d62a17ae | 2136 | void rtadv_init(struct zebra_ns *zns) |
718e3744 | 2137 | { |
a3be9fa1 | 2138 | zrouter.rtadv.sock = rtadv_make_socket(zns->ns_id); |
cd80d74f | 2139 | } |
718e3744 | 2140 | |
d62a17ae | 2141 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 2142 | { |
d62a17ae | 2143 | rtadv_event(zns, RTADV_STOP, 0); |
a3be9fa1 DS |
2144 | if (zrouter.rtadv.sock >= 0) { |
2145 | close(zrouter.rtadv.sock); | |
2146 | zrouter.rtadv.sock = -1; | |
d62a17ae | 2147 | } |
2148 | ||
a3be9fa1 DS |
2149 | zrouter.rtadv.adv_if_count = 0; |
2150 | zrouter.rtadv.adv_msec_if_count = 0; | |
cd80d74f | 2151 | } |
718e3744 | 2152 | |
d62a17ae | 2153 | void rtadv_cmd_init(void) |
cd80d74f | 2154 | { |
2eb27eec DL |
2155 | hook_register(zebra_if_extra_info, nd_dump_vty); |
2156 | hook_register(zebra_if_config_wr, rtadv_config_write); | |
2157 | ||
d62a17ae | 2158 | install_element(INTERFACE_NODE, &ipv6_nd_suppress_ra_cmd); |
2159 | install_element(INTERFACE_NODE, &no_ipv6_nd_suppress_ra_cmd); | |
2160 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_cmd); | |
2161 | install_element(INTERFACE_NODE, &ipv6_nd_ra_interval_msec_cmd); | |
2162 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_interval_cmd); | |
2163 | install_element(INTERFACE_NODE, &ipv6_nd_ra_lifetime_cmd); | |
2164 | install_element(INTERFACE_NODE, &no_ipv6_nd_ra_lifetime_cmd); | |
2165 | install_element(INTERFACE_NODE, &ipv6_nd_reachable_time_cmd); | |
2166 | install_element(INTERFACE_NODE, &no_ipv6_nd_reachable_time_cmd); | |
2167 | install_element(INTERFACE_NODE, &ipv6_nd_managed_config_flag_cmd); | |
2168 | install_element(INTERFACE_NODE, &no_ipv6_nd_managed_config_flag_cmd); | |
2169 | install_element(INTERFACE_NODE, &ipv6_nd_other_config_flag_cmd); | |
2170 | install_element(INTERFACE_NODE, &no_ipv6_nd_other_config_flag_cmd); | |
2171 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_config_flag_cmd); | |
2172 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_config_flag_cmd); | |
2173 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_preference_cmd); | |
2174 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_preference_cmd); | |
2175 | install_element(INTERFACE_NODE, &ipv6_nd_homeagent_lifetime_cmd); | |
2176 | install_element(INTERFACE_NODE, &no_ipv6_nd_homeagent_lifetime_cmd); | |
2177 | install_element(INTERFACE_NODE, | |
2178 | &ipv6_nd_adv_interval_config_option_cmd); | |
2179 | install_element(INTERFACE_NODE, | |
2180 | &no_ipv6_nd_adv_interval_config_option_cmd); | |
2181 | install_element(INTERFACE_NODE, &ipv6_nd_prefix_cmd); | |
2182 | install_element(INTERFACE_NODE, &no_ipv6_nd_prefix_cmd); | |
2183 | install_element(INTERFACE_NODE, &ipv6_nd_router_preference_cmd); | |
2184 | install_element(INTERFACE_NODE, &no_ipv6_nd_router_preference_cmd); | |
2185 | install_element(INTERFACE_NODE, &ipv6_nd_mtu_cmd); | |
2186 | install_element(INTERFACE_NODE, &no_ipv6_nd_mtu_cmd); | |
3eb4fbb0 LS |
2187 | install_element(INTERFACE_NODE, &ipv6_nd_rdnss_cmd); |
2188 | install_element(INTERFACE_NODE, &no_ipv6_nd_rdnss_cmd); | |
2189 | install_element(INTERFACE_NODE, &ipv6_nd_dnssl_cmd); | |
2190 | install_element(INTERFACE_NODE, &no_ipv6_nd_dnssl_cmd); | |
718e3744 | 2191 | } |
2192 | ||
d62a17ae | 2193 | static int if_join_all_router(int sock, struct interface *ifp) |
718e3744 | 2194 | { |
d62a17ae | 2195 | int ret; |
718e3744 | 2196 | |
d62a17ae | 2197 | struct ipv6_mreq mreq; |
718e3744 | 2198 | |
d62a17ae | 2199 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
2200 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
2201 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 2202 | |
d62a17ae | 2203 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char *)&mreq, |
2204 | sizeof mreq); | |
2205 | if (ret < 0) | |
450971aa | 2206 | flog_err_sys(EC_LIB_SOCKET, |
9df414fe QY |
2207 | "%s(%u): Failed to join group, socket %u error %s", |
2208 | ifp->name, ifp->ifindex, sock, | |
2209 | safe_strerror(errno)); | |
718e3744 | 2210 | |
d62a17ae | 2211 | if (IS_ZEBRA_DEBUG_EVENT) |
2212 | zlog_debug( | |
2213 | "%s(%u): Join All-Routers multicast group, socket %u", | |
2214 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 2215 | |
d62a17ae | 2216 | return 0; |
718e3744 | 2217 | } |
2218 | ||
d62a17ae | 2219 | static int if_leave_all_router(int sock, struct interface *ifp) |
718e3744 | 2220 | { |
d62a17ae | 2221 | int ret; |
718e3744 | 2222 | |
d62a17ae | 2223 | struct ipv6_mreq mreq; |
718e3744 | 2224 | |
d62a17ae | 2225 | memset(&mreq, 0, sizeof(struct ipv6_mreq)); |
2226 | inet_pton(AF_INET6, ALLROUTER, &mreq.ipv6mr_multiaddr); | |
2227 | mreq.ipv6mr_interface = ifp->ifindex; | |
718e3744 | 2228 | |
d62a17ae | 2229 | ret = setsockopt(sock, IPPROTO_IPV6, IPV6_LEAVE_GROUP, (char *)&mreq, |
2230 | sizeof mreq); | |
2231 | if (ret < 0) | |
9df414fe | 2232 | flog_err_sys( |
450971aa | 2233 | EC_LIB_SOCKET, |
9df414fe QY |
2234 | "%s(%u): Failed to leave group, socket %u error %s", |
2235 | ifp->name, ifp->ifindex, sock, safe_strerror(errno)); | |
718e3744 | 2236 | |
d62a17ae | 2237 | if (IS_ZEBRA_DEBUG_EVENT) |
2238 | zlog_debug( | |
2239 | "%s(%u): Leave All-Routers multicast group, socket %u", | |
2240 | ifp->name, ifp->ifindex, sock); | |
718e3744 | 2241 | |
d62a17ae | 2242 | return 0; |
718e3744 | 2243 | } |
2244 | ||
2245 | #else | |
d62a17ae | 2246 | void rtadv_init(struct zebra_ns *zns) |
cd80d74f | 2247 | { |
d62a17ae | 2248 | /* Empty.*/; |
cd80d74f | 2249 | } |
d62a17ae | 2250 | void rtadv_terminate(struct zebra_ns *zns) |
cd80d74f | 2251 | { |
d62a17ae | 2252 | /* Empty.*/; |
cd80d74f | 2253 | } |
d62a17ae | 2254 | void rtadv_cmd_init(void) |
718e3744 | 2255 | { |
d62a17ae | 2256 | /* Empty.*/; |
718e3744 | 2257 | } |
56c1f7d8 | 2258 | #endif /* HAVE_RTADV */ |