1 | /* $NetBSD: icmp6.h,v 1.47 2013/07/01 12:43:15 christos Exp $ */ |
2 | /* $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 itojun Exp $ */ |
3 | |
4 | |
5 | /* |
6 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
7 | * All rights reserved. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * 1. Redistributions of source code must retain the above copyright |
13 | * notice, this list of conditions and the following disclaimer. |
14 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * notice, this list of conditions and the following disclaimer in the |
16 | * documentation and/or other materials provided with the distribution. |
17 | * 3. Neither the name of the project nor the names of its contributors |
18 | * may be used to endorse or promote products derived from this software |
19 | * without specific prior written permission. |
20 | * |
21 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
31 | * SUCH DAMAGE. |
32 | */ |
33 | |
34 | /* |
35 | * Copyright (c) 1982, 1986, 1993 |
36 | * The Regents of the University of California. All rights reserved. |
37 | * |
38 | * Redistribution and use in source and binary forms, with or without |
39 | * modification, are permitted provided that the following conditions |
40 | * are met: |
41 | * 1. Redistributions of source code must retain the above copyright |
42 | * notice, this list of conditions and the following disclaimer. |
43 | * 2. Redistributions in binary form must reproduce the above copyright |
44 | * notice, this list of conditions and the following disclaimer in the |
45 | * documentation and/or other materials provided with the distribution. |
46 | * 3. Neither the name of the University nor the names of its contributors |
47 | * may be used to endorse or promote products derived from this software |
48 | * without specific prior written permission. |
49 | * |
50 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
51 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
52 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
53 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
54 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
55 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
56 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
57 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
58 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
59 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
60 | * SUCH DAMAGE. |
61 | * |
62 | * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 |
63 | */ |
64 | |
65 | #ifndef _NETINET_ICMP6_H_ |
66 | #define _NETINET_ICMP6_H_ |
67 | |
68 | #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) |
69 | - sizeof(struct icmp6_hdr) */ |
70 | |
71 | struct icmp6_hdr { |
72 | u_int8_t icmp6_type; /* type field */ |
73 | u_int8_t icmp6_code; /* code field */ |
74 | u_int16_t icmp6_cksum; /* checksum field */ |
75 | union { |
76 | u_int32_t icmp6_un_data32[1]; /* type-specific field */ |
77 | u_int16_t icmp6_un_data16[2]; /* type-specific field */ |
78 | u_int8_t icmp6_un_data8[4]; /* type-specific field */ |
79 | } icmp6_dataun; |
80 | } __packed; |
81 | |
82 | #define icmp6_data32 icmp6_dataun.icmp6_un_data32 |
83 | #define icmp6_data16 icmp6_dataun.icmp6_un_data16 |
84 | #define icmp6_data8 icmp6_dataun.icmp6_un_data8 |
85 | #define icmp6_pptr icmp6_data32[0] /* parameter prob */ |
86 | #define icmp6_mtu icmp6_data32[0] /* packet too big */ |
87 | #define icmp6_id icmp6_data16[0] /* echo request/reply */ |
88 | #define icmp6_seq icmp6_data16[1] /* echo request/reply */ |
89 | #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ |
90 | |
91 | #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ |
92 | #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ |
93 | #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ |
94 | #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ |
95 | |
96 | #define ICMP6_ECHO_REQUEST 128 /* echo service */ |
97 | #define ICMP6_ECHO_REPLY 129 /* echo reply */ |
98 | #define MLD_LISTENER_QUERY 130 /* multicast listener query */ |
99 | #define MLD_LISTENER_REPORT 131 /* multicast listener report */ |
100 | #define MLD_LISTENER_DONE 132 /* multicast listener done */ |
101 | #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ |
102 | |
103 | /* RFC2292 decls */ |
104 | #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ |
105 | #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ |
106 | #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ |
107 | |
108 | #ifndef _KERNEL |
109 | /* the followings are for backward compatibility to old KAME apps. */ |
110 | #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY |
111 | #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT |
112 | #define MLD6_LISTENER_DONE MLD_LISTENER_DONE |
113 | #endif |
114 | |
115 | #define ND_ROUTER_SOLICIT 133 /* router solicitation */ |
116 | #define ND_ROUTER_ADVERT 134 /* router advertisement */ |
117 | #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ |
118 | #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ |
119 | #define ND_REDIRECT 137 /* redirect */ |
120 | |
121 | #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ |
122 | |
123 | #define ICMP6_WRUREQUEST 139 /* who are you request */ |
124 | #define ICMP6_WRUREPLY 140 /* who are you reply */ |
125 | #define ICMP6_FQDN_QUERY 139 /* FQDN query */ |
126 | #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ |
127 | #define ICMP6_NI_QUERY 139 /* node information request */ |
128 | #define ICMP6_NI_REPLY 140 /* node information reply */ |
129 | #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ |
130 | |
131 | /* The definitions below are experimental. TBA */ |
132 | #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */ |
133 | #define MLD_MTRACE 201 /* mtrace messages */ |
134 | |
135 | #ifndef _KERNEL |
136 | /* the followings are for backward compatibility to old KAME apps. */ |
137 | #define MLD6_MTRACE_RESP MLD_MTRACE_RESP |
138 | #define MLD6_MTRACE MLD_MTRACE |
139 | #endif |
140 | |
141 | #define ICMP6_MAXTYPE 201 |
142 | |
143 | #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ |
144 | #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ |
145 | #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ |
146 | #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ |
147 | #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ |
148 | #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ |
149 | #define ICMP6_DST_UNREACH_POLICY 5 /* source address failed ingress/egress policy */ |
150 | #define ICMP6_DST_UNREACH_REJROUTE 6 /* reject route to destination */ |
151 | #define ICMP6_DST_UNREACH_SOURCERT 7 /* error in source routing header */ |
152 | |
153 | #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ |
154 | #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ |
155 | |
156 | #define 0 /* erroneous header field */ |
157 | #define 1 /* unrecognized next header */ |
158 | #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ |
159 | |
160 | #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ |
161 | |
162 | #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ |
163 | #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ |
164 | #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ |
165 | |
166 | #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ |
167 | #define ICMP6_NI_REFUSED 1 /* node information request is refused */ |
168 | #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ |
169 | |
170 | #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ |
171 | #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ |
172 | #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ |
173 | |
174 | /* Used in kernel only */ |
175 | #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ |
176 | #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ |
177 | |
178 | /* |
179 | * Multicast Listener Discovery |
180 | */ |
181 | struct mld_hdr { |
182 | struct icmp6_hdr mld_icmp6_hdr; |
183 | struct in6_addr mld_addr; /* multicast address */ |
184 | } __packed; |
185 | |
186 | /* definitions to provide backward compatibility to old KAME applications */ |
187 | #ifndef _KERNEL |
188 | #define mld6_hdr mld_hdr |
189 | #define mld6_type mld_type |
190 | #define mld6_code mld_code |
191 | #define mld6_cksum mld_cksum |
192 | #define mld6_maxdelay mld_maxdelay |
193 | #define mld6_reserved mld_reserved |
194 | #define mld6_addr mld_addr |
195 | #endif |
196 | |
197 | /* shortcut macro definitions */ |
198 | #define mld_type mld_icmp6_hdr.icmp6_type |
199 | #define mld_code mld_icmp6_hdr.icmp6_code |
200 | #define mld_cksum mld_icmp6_hdr.icmp6_cksum |
201 | #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] |
202 | #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] |
203 | |
204 | #define MLD_MINLEN 24 |
205 | |
206 | /* |
207 | * Neighbor Discovery |
208 | */ |
209 | |
210 | struct nd_router_solicit { /* router solicitation */ |
211 | struct icmp6_hdr nd_rs_hdr; |
212 | /* could be followed by options */ |
213 | } __packed; |
214 | |
215 | #define nd_rs_type nd_rs_hdr.icmp6_type |
216 | #define nd_rs_code nd_rs_hdr.icmp6_code |
217 | #define nd_rs_cksum nd_rs_hdr.icmp6_cksum |
218 | #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] |
219 | |
220 | struct nd_router_advert { /* router advertisement */ |
221 | struct icmp6_hdr nd_ra_hdr; |
222 | u_int32_t nd_ra_reachable; /* reachable time */ |
223 | u_int32_t nd_ra_retransmit; /* retransmit timer */ |
224 | /* could be followed by options */ |
225 | } __packed; |
226 | |
227 | #define nd_ra_type nd_ra_hdr.icmp6_type |
228 | #define nd_ra_code nd_ra_hdr.icmp6_code |
229 | #define nd_ra_cksum nd_ra_hdr.icmp6_cksum |
230 | #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] |
231 | #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] |
232 | #define ND_RA_FLAG_MANAGED 0x80 |
233 | #define ND_RA_FLAG_OTHER 0x40 |
234 | #define ND_RA_FLAG_HOME_AGENT 0x20 |
235 | |
236 | /* |
237 | * Router preference values based on RFC4191. |
238 | */ |
239 | #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ |
240 | |
241 | #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ |
242 | #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ |
243 | #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ |
244 | #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ |
245 | |
246 | #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] |
247 | |
248 | struct nd_neighbor_solicit { /* neighbor solicitation */ |
249 | struct icmp6_hdr nd_ns_hdr; |
250 | struct in6_addr nd_ns_target; /*target address */ |
251 | /* could be followed by options */ |
252 | } __packed; |
253 | |
254 | #define nd_ns_type nd_ns_hdr.icmp6_type |
255 | #define nd_ns_code nd_ns_hdr.icmp6_code |
256 | #define nd_ns_cksum nd_ns_hdr.icmp6_cksum |
257 | #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] |
258 | |
259 | struct nd_neighbor_advert { /* neighbor advertisement */ |
260 | struct icmp6_hdr nd_na_hdr; |
261 | struct in6_addr nd_na_target; /* target address */ |
262 | /* could be followed by options */ |
263 | } __packed; |
264 | |
265 | #define nd_na_type nd_na_hdr.icmp6_type |
266 | #define nd_na_code nd_na_hdr.icmp6_code |
267 | #define nd_na_cksum nd_na_hdr.icmp6_cksum |
268 | #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] |
269 | #if BYTE_ORDER == BIG_ENDIAN |
270 | #define ND_NA_FLAG_ROUTER 0x80000000 |
271 | #define ND_NA_FLAG_SOLICITED 0x40000000 |
272 | #define ND_NA_FLAG_OVERRIDE 0x20000000 |
273 | #else |
274 | #if BYTE_ORDER == LITTLE_ENDIAN |
275 | #define ND_NA_FLAG_ROUTER 0x80 |
276 | #define ND_NA_FLAG_SOLICITED 0x40 |
277 | #define ND_NA_FLAG_OVERRIDE 0x20 |
278 | #endif |
279 | #endif |
280 | |
281 | struct nd_redirect { /* redirect */ |
282 | struct icmp6_hdr nd_rd_hdr; |
283 | struct in6_addr nd_rd_target; /* target address */ |
284 | struct in6_addr nd_rd_dst; /* destination address */ |
285 | /* could be followed by options */ |
286 | } __packed; |
287 | |
288 | #define nd_rd_type nd_rd_hdr.icmp6_type |
289 | #define nd_rd_code nd_rd_hdr.icmp6_code |
290 | #define nd_rd_cksum nd_rd_hdr.icmp6_cksum |
291 | #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] |
292 | |
293 | struct nd_opt_hdr { /* Neighbor discovery option header */ |
294 | u_int8_t nd_opt_type; |
295 | u_int8_t nd_opt_len; |
296 | /* followed by option specific data*/ |
297 | } __packed; |
298 | |
299 | #define ND_OPT_SOURCE_LINKADDR 1 |
300 | #define ND_OPT_TARGET_LINKADDR 2 |
301 | #define ND_OPT_PREFIX_INFORMATION 3 |
302 | #define 4 |
303 | #define ND_OPT_MTU 5 |
304 | #define ND_OPT_ADVINTERVAL 7 |
305 | #define ND_OPT_HOMEAGENT_INFO 8 |
306 | #define ND_OPT_SOURCE_ADDRLIST 9 |
307 | #define ND_OPT_TARGET_ADDRLIST 10 |
308 | #define ND_OPT_MAP 23 /* RFC 5380 */ |
309 | #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */ |
310 | #define ND_OPT_RDNSS 25 /* RFC 6016 */ |
311 | #define ND_OPT_DNSSL 31 /* RFC 6016 */ |
312 | |
313 | struct nd_opt_route_info { /* route info */ |
314 | u_int8_t nd_opt_rti_type; |
315 | u_int8_t nd_opt_rti_len; |
316 | u_int8_t nd_opt_rti_prefixlen; |
317 | u_int8_t nd_opt_rti_flags; |
318 | u_int32_t nd_opt_rti_lifetime; |
319 | /* prefix follows */ |
320 | }; |
321 | |
322 | struct nd_opt_prefix_info { /* prefix information */ |
323 | u_int8_t nd_opt_pi_type; |
324 | u_int8_t nd_opt_pi_len; |
325 | u_int8_t nd_opt_pi_prefix_len; |
326 | u_int8_t nd_opt_pi_flags_reserved; |
327 | u_int32_t nd_opt_pi_valid_time; |
328 | u_int32_t nd_opt_pi_preferred_time; |
329 | u_int32_t nd_opt_pi_reserved2; |
330 | struct in6_addr nd_opt_pi_prefix; |
331 | } __packed; |
332 | |
333 | #define ND_OPT_PI_FLAG_ONLINK 0x80 |
334 | #define ND_OPT_PI_FLAG_AUTO 0x40 |
335 | |
336 | struct nd_opt_rd_hdr { /* redirected header */ |
337 | u_int8_t nd_opt_rh_type; |
338 | u_int8_t nd_opt_rh_len; |
339 | u_int16_t nd_opt_rh_reserved1; |
340 | u_int32_t nd_opt_rh_reserved2; |
341 | /* followed by IP header and data */ |
342 | } __packed; |
343 | |
344 | struct nd_opt_mtu { /* MTU option */ |
345 | u_int8_t nd_opt_mtu_type; |
346 | u_int8_t nd_opt_mtu_len; |
347 | u_int16_t nd_opt_mtu_reserved; |
348 | u_int32_t nd_opt_mtu_mtu; |
349 | } __packed; |
350 | |
351 | struct nd_opt_rdnss { /* RDNSS option RFC 6106 */ |
352 | u_int8_t nd_opt_rdnss_type; |
353 | u_int8_t nd_opt_rdnss_len; |
354 | u_int16_t nd_opt_rdnss_reserved; |
355 | u_int32_t nd_opt_rdnss_lifetime; |
356 | /* followed by list of IP prefixes */ |
357 | } __packed; |
358 | |
359 | struct nd_opt_dnssl { /* DNSSL option RFC 6106 */ |
360 | u_int8_t nd_opt_dnssl_type; |
361 | u_int8_t nd_opt_dnssl_len; |
362 | u_int16_t nd_opt_dnssl_reserved; |
363 | u_int32_t nd_opt_dnssl_lifetime; |
364 | /* followed by list of IP prefixes */ |
365 | } __packed; |
366 | |
367 | /* |
368 | * icmp6 namelookup |
369 | */ |
370 | |
371 | struct icmp6_namelookup { |
372 | struct icmp6_hdr icmp6_nl_hdr; |
373 | u_int8_t icmp6_nl_nonce[8]; |
374 | int32_t icmp6_nl_ttl; |
375 | #if 0 |
376 | u_int8_t icmp6_nl_len; |
377 | u_int8_t icmp6_nl_name[3]; |
378 | #endif |
379 | /* could be followed by options */ |
380 | } __packed; |
381 | |
382 | /* |
383 | * icmp6 node information |
384 | */ |
385 | struct icmp6_nodeinfo { |
386 | struct icmp6_hdr icmp6_ni_hdr; |
387 | u_int8_t icmp6_ni_nonce[8]; |
388 | /* could be followed by reply data */ |
389 | } __packed; |
390 | |
391 | #define ni_type icmp6_ni_hdr.icmp6_type |
392 | #define ni_code icmp6_ni_hdr.icmp6_code |
393 | #define ni_cksum icmp6_ni_hdr.icmp6_cksum |
394 | #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] |
395 | #define ni_flags icmp6_ni_hdr.icmp6_data16[1] |
396 | |
397 | #define NI_QTYPE_NOOP 0 /* NOOP */ |
398 | #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ |
399 | #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ |
400 | #define NI_QTYPE_DNSNAME 2 /* DNS Name */ |
401 | #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ |
402 | #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ |
403 | |
404 | #if BYTE_ORDER == BIG_ENDIAN |
405 | #define NI_SUPTYPE_FLAG_COMPRESS 0x1 |
406 | #define NI_FQDN_FLAG_VALIDTTL 0x1 |
407 | #elif BYTE_ORDER == LITTLE_ENDIAN |
408 | #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 |
409 | #define NI_FQDN_FLAG_VALIDTTL 0x0100 |
410 | #endif |
411 | |
412 | #ifdef NAME_LOOKUPS_04 |
413 | #if BYTE_ORDER == BIG_ENDIAN |
414 | #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 |
415 | #define NI_NODEADDR_FLAG_SITELOCAL 0x2 |
416 | #define NI_NODEADDR_FLAG_GLOBAL 0x4 |
417 | #define NI_NODEADDR_FLAG_ALL 0x8 |
418 | #define NI_NODEADDR_FLAG_TRUNCATE 0x10 |
419 | #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ |
420 | #elif BYTE_ORDER == LITTLE_ENDIAN |
421 | #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 |
422 | #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 |
423 | #define NI_NODEADDR_FLAG_GLOBAL 0x0400 |
424 | #define NI_NODEADDR_FLAG_ALL 0x0800 |
425 | #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 |
426 | #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ |
427 | #endif |
428 | #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ |
429 | #if BYTE_ORDER == BIG_ENDIAN |
430 | #define NI_NODEADDR_FLAG_TRUNCATE 0x1 |
431 | #define NI_NODEADDR_FLAG_ALL 0x2 |
432 | #define NI_NODEADDR_FLAG_COMPAT 0x4 |
433 | #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 |
434 | #define NI_NODEADDR_FLAG_SITELOCAL 0x10 |
435 | #define NI_NODEADDR_FLAG_GLOBAL 0x20 |
436 | #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ |
437 | #elif BYTE_ORDER == LITTLE_ENDIAN |
438 | #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 |
439 | #define NI_NODEADDR_FLAG_ALL 0x0200 |
440 | #define NI_NODEADDR_FLAG_COMPAT 0x0400 |
441 | #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 |
442 | #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 |
443 | #define NI_NODEADDR_FLAG_GLOBAL 0x2000 |
444 | #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ |
445 | #endif |
446 | #endif |
447 | |
448 | struct ni_reply_fqdn { |
449 | u_int32_t ni_fqdn_ttl; /* TTL */ |
450 | u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ |
451 | u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ |
452 | } __packed; |
453 | |
454 | /* |
455 | * Router Renumbering. as router-renum-08.txt |
456 | */ |
457 | struct icmp6_router_renum { /* router renumbering header */ |
458 | struct icmp6_hdr rr_hdr; |
459 | u_int8_t rr_segnum; |
460 | u_int8_t rr_flags; |
461 | u_int16_t rr_maxdelay; |
462 | u_int32_t rr_reserved; |
463 | } __packed; |
464 | |
465 | #define ICMP6_RR_FLAGS_TEST 0x80 |
466 | #define ICMP6_RR_FLAGS_REQRESULT 0x40 |
467 | #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 |
468 | #define ICMP6_RR_FLAGS_SPECSITE 0x10 |
469 | #define ICMP6_RR_FLAGS_PREVDONE 0x08 |
470 | |
471 | #define rr_type rr_hdr.icmp6_type |
472 | #define rr_code rr_hdr.icmp6_code |
473 | #define rr_cksum rr_hdr.icmp6_cksum |
474 | #define rr_seqnum rr_hdr.icmp6_data32[0] |
475 | |
476 | struct rr_pco_match { /* match prefix part */ |
477 | u_int8_t rpm_code; |
478 | u_int8_t rpm_len; |
479 | u_int8_t rpm_ordinal; |
480 | u_int8_t rpm_matchlen; |
481 | u_int8_t rpm_minlen; |
482 | u_int8_t rpm_maxlen; |
483 | u_int16_t rpm_reserved; |
484 | struct in6_addr rpm_prefix; |
485 | } __packed; |
486 | |
487 | #define RPM_PCO_ADD 1 |
488 | #define RPM_PCO_CHANGE 2 |
489 | #define RPM_PCO_SETGLOBAL 3 |
490 | #define RPM_PCO_MAX 4 |
491 | |
492 | struct rr_pco_use { /* use prefix part */ |
493 | u_int8_t rpu_uselen; |
494 | u_int8_t rpu_keeplen; |
495 | u_int8_t rpu_ramask; |
496 | u_int8_t rpu_raflags; |
497 | u_int32_t rpu_vltime; |
498 | u_int32_t rpu_pltime; |
499 | u_int32_t rpu_flags; |
500 | struct in6_addr rpu_prefix; |
501 | } __packed; |
502 | #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 |
503 | #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 |
504 | |
505 | #if BYTE_ORDER == BIG_ENDIAN |
506 | #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 |
507 | #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 |
508 | #elif BYTE_ORDER == LITTLE_ENDIAN |
509 | #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 |
510 | #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 |
511 | #endif |
512 | |
513 | struct rr_result { /* router renumbering result message */ |
514 | u_int16_t rrr_flags; |
515 | u_int8_t rrr_ordinal; |
516 | u_int8_t rrr_matchedlen; |
517 | u_int32_t rrr_ifid; |
518 | struct in6_addr rrr_prefix; |
519 | } __packed; |
520 | #if BYTE_ORDER == BIG_ENDIAN |
521 | #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 |
522 | #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 |
523 | #elif BYTE_ORDER == LITTLE_ENDIAN |
524 | #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 |
525 | #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 |
526 | #endif |
527 | |
528 | /* |
529 | * icmp6 filter structures. |
530 | */ |
531 | |
532 | struct icmp6_filter { |
533 | u_int32_t icmp6_filt[8]; |
534 | }; |
535 | |
536 | #define ICMP6_FILTER_SETPASSALL(filterp) \ |
537 | (void)memset(filterp, 0xff, sizeof(struct icmp6_filter)) |
538 | #define ICMP6_FILTER_SETBLOCKALL(filterp) \ |
539 | (void)memset(filterp, 0x00, sizeof(struct icmp6_filter)) |
540 | #define ICMP6_FILTER_SETPASS(type, filterp) \ |
541 | (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) |
542 | #define ICMP6_FILTER_SETBLOCK(type, filterp) \ |
543 | (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) |
544 | #define ICMP6_FILTER_WILLPASS(type, filterp) \ |
545 | ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) |
546 | #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ |
547 | ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) |
548 | |
549 | /* |
550 | * Variables related to this implementation |
551 | * of the internet control message protocol version 6. |
552 | */ |
553 | |
554 | /* |
555 | * IPv6 ICMP statistics. |
556 | * Each counter is an unsigned 64-bit value. |
557 | */ |
558 | #define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */ |
559 | #define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */ |
560 | #define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */ |
561 | #define ICMP6_STAT_OUTHIST 3 /* # of output messages */ |
562 | /* space for 256 counters */ |
563 | #define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */ |
564 | #define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */ |
565 | #define ICMP6_STAT_CHECKSUM 261 /* bad checksum */ |
566 | #define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */ |
567 | /* |
568 | * number of responses; this member is inherited from the netinet code, |
569 | * but for netinet6 code, it is already available in outhist[]. |
570 | */ |
571 | #define ICMP6_STAT_REFLECT 263 |
572 | #define ICMP6_STAT_INHIST 264 /* # of input messages */ |
573 | /* space for 256 counters */ |
574 | #define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */ |
575 | #define ICMP6_STAT_OUTERRHIST 521 |
576 | /* space for 13 counters */ |
577 | #define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */ |
578 | #define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */ |
579 | #define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */ |
580 | #define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */ |
581 | #define ICMP6_STAT_BADRS 538 /* bad router solicitiation */ |
582 | #define ICMP6_STAT_BADRA 539 /* bad router advertisement */ |
583 | #define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */ |
584 | #define ICMP6_STAT_DROPPED_RAROUTE 541 /* discarded routes from router advertisement */ |
585 | |
586 | #define ICMP6_NSTATS 542 |
587 | |
588 | #define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0 |
589 | #define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1 |
590 | #define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2 |
591 | #define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3 |
592 | #define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4 |
593 | #define ICMP6_ERRSTAT_PACKET_TOO_BIG 5 |
594 | #define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6 |
595 | #define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7 |
596 | #define 8 |
597 | #define 9 |
598 | #define ICMP6_ERRSTAT_PARAMPROB_OPTION 10 |
599 | #define ICMP6_ERRSTAT_REDIRECT 11 |
600 | #define ICMP6_ERRSTAT_UNKNOWN 12 |
601 | |
602 | /* |
603 | * Names for ICMP sysctl objects |
604 | */ |
605 | #define ICMPV6CTL_STATS 1 |
606 | #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ |
607 | #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ |
608 | #if 0 /*obsoleted*/ |
609 | #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ |
610 | #endif |
611 | #define ICMPV6CTL_ND6_PRUNE 6 |
612 | #define ICMPV6CTL_ND6_DELAY 8 |
613 | #define ICMPV6CTL_ND6_UMAXTRIES 9 |
614 | #define ICMPV6CTL_ND6_MMAXTRIES 10 |
615 | #define ICMPV6CTL_ND6_USELOOPBACK 11 |
616 | /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ |
617 | #define ICMPV6CTL_NODEINFO 13 |
618 | #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ |
619 | #define ICMPV6CTL_ND6_MAXNUDHINT 15 |
620 | #define ICMPV6CTL_MTUDISC_HIWAT 16 |
621 | #define ICMPV6CTL_MTUDISC_LOWAT 17 |
622 | #define ICMPV6CTL_ND6_DEBUG 18 |
623 | #define ICMPV6CTL_ND6_DRLIST 19 |
624 | #define ICMPV6CTL_ND6_PRLIST 20 |
625 | #define ICMPV6CTL_ND6_MAXQLEN 24 |
626 | #define ICMPV6CTL_MAXID 25 |
627 | |
628 | #define ICMPV6CTL_NAMES { \ |
629 | { 0, 0 }, \ |
630 | { 0, 0 }, \ |
631 | { "rediraccept", CTLTYPE_INT }, \ |
632 | { "redirtimeout", CTLTYPE_INT }, \ |
633 | { 0, 0 }, \ |
634 | { 0, 0 }, \ |
635 | { "nd6_prune", CTLTYPE_INT }, \ |
636 | { 0, 0 }, \ |
637 | { "nd6_delay", CTLTYPE_INT }, \ |
638 | { "nd6_umaxtries", CTLTYPE_INT }, \ |
639 | { "nd6_mmaxtries", CTLTYPE_INT }, \ |
640 | { "nd6_useloopback", CTLTYPE_INT }, \ |
641 | { 0, 0 }, \ |
642 | { "nodeinfo", CTLTYPE_INT }, \ |
643 | { "errppslimit", CTLTYPE_INT }, \ |
644 | { "nd6_maxnudhint", CTLTYPE_INT }, \ |
645 | { "mtudisc_hiwat", CTLTYPE_INT }, \ |
646 | { "mtudisc_lowat", CTLTYPE_INT }, \ |
647 | { "nd6_debug", CTLTYPE_INT }, \ |
648 | { 0, 0 }, \ |
649 | { 0, 0 }, \ |
650 | { 0, 0 }, \ |
651 | { 0, 0 }, \ |
652 | { 0, 0 }, \ |
653 | { "nd6_maxqueuelen", CTLTYPE_INT }, \ |
654 | } |
655 | |
656 | #ifdef _KERNEL |
657 | struct rtentry; |
658 | struct rttimer; |
659 | struct in6_multi; |
660 | |
661 | void icmp6_init(void); |
662 | void icmp6_paramerror(struct mbuf *, int); |
663 | void icmp6_error(struct mbuf *, int, int, int); |
664 | void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); |
665 | int icmp6_input(struct mbuf **, int *, int); |
666 | void icmp6_fasttimo(void); |
667 | void icmp6_reflect(struct mbuf *, size_t); |
668 | void icmp6_prepare(struct mbuf *); |
669 | void icmp6_redirect_input(struct mbuf *, int); |
670 | void icmp6_redirect_output(struct mbuf *, struct rtentry *); |
671 | int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t); |
672 | |
673 | void icmp6_statinc(u_int); |
674 | |
675 | struct ip6ctlparam; |
676 | void icmp6_mtudisc_update(struct ip6ctlparam *, int); |
677 | void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *)); |
678 | |
679 | /* XXX: is this the right place for these macros? */ |
680 | #define icmp6_ifstat_inc(ifp, tag) \ |
681 | do { \ |
682 | if (ifp) \ |
683 | ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ |
684 | } while (/*CONSTCOND*/ 0) |
685 | |
686 | #define icmp6_ifoutstat_inc(ifp, type, code) \ |
687 | do { \ |
688 | icmp6_ifstat_inc(ifp, ifs6_out_msg); \ |
689 | switch(type) { \ |
690 | case ICMP6_DST_UNREACH: \ |
691 | icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ |
692 | if (code == ICMP6_DST_UNREACH_ADMIN) \ |
693 | icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ |
694 | break; \ |
695 | case ICMP6_PACKET_TOO_BIG: \ |
696 | icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ |
697 | break; \ |
698 | case ICMP6_TIME_EXCEEDED: \ |
699 | icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ |
700 | break; \ |
701 | case ICMP6_PARAM_PROB: \ |
702 | icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ |
703 | break; \ |
704 | case ICMP6_ECHO_REQUEST: \ |
705 | icmp6_ifstat_inc(ifp, ifs6_out_echo); \ |
706 | break; \ |
707 | case ICMP6_ECHO_REPLY: \ |
708 | icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ |
709 | break; \ |
710 | case MLD_LISTENER_QUERY: \ |
711 | icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ |
712 | break; \ |
713 | case MLD_LISTENER_REPORT: \ |
714 | icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ |
715 | break; \ |
716 | case MLD_LISTENER_DONE: \ |
717 | icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ |
718 | break; \ |
719 | case ND_ROUTER_SOLICIT: \ |
720 | icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ |
721 | break; \ |
722 | case ND_ROUTER_ADVERT: \ |
723 | icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ |
724 | break; \ |
725 | case ND_NEIGHBOR_SOLICIT: \ |
726 | icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ |
727 | break; \ |
728 | case ND_NEIGHBOR_ADVERT: \ |
729 | icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ |
730 | break; \ |
731 | case ND_REDIRECT: \ |
732 | icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ |
733 | break; \ |
734 | } \ |
735 | } while (/*CONSTCOND*/ 0) |
736 | |
737 | extern int icmp6_rediraccept; /* accept/process redirects */ |
738 | extern int icmp6_redirtimeout; /* cache time for redirect routes */ |
739 | #endif /* _KERNEL */ |
740 | |
741 | #ifdef ICMP6_STRINGS |
742 | /* Info: http://www.iana.org/assignments/icmpv6-parameters */ |
743 | |
744 | static const char * const icmp6_type_err[] = { |
745 | "reserved0" , "unreach" , "packet_too_big" , "timxceed" , "paramprob" , |
746 | NULL |
747 | }; |
748 | |
749 | static const char * const icmp6_type_info[] = { |
750 | "echo" , "echoreply" , |
751 | "mcastlistenq" , "mcastlistenrep" , "mcastlistendone" , |
752 | "rtsol" , "rtadv" , "neighsol" , "neighadv" , "redirect" , |
753 | "routerrenum" , "nodeinfoq" , "nodeinfor" , "invneighsol" , "invneighrep" , |
754 | "mcastlistenrep2" , "haad_req" , "haad_rep" , |
755 | "mobile_psol" , "mobile_padv" , "cga_sol" , "cga_adv" , |
756 | "experimental150" , "mcast_rtadv" , "mcast_rtsol" , "mcast_rtterm" , |
757 | "fmipv6_msg" , "rpl_control" , NULL |
758 | }; |
759 | |
760 | static const char * const icmp6_code_none[] = { "none" , NULL }; |
761 | |
762 | static const char * const icmp6_code_unreach[] = { |
763 | "noroute" , "admin" , "beyondscope" , "addr" , "port" , |
764 | "srcaddr_policy" , "reject_route" , "source_route_err" , NULL |
765 | }; |
766 | |
767 | static const char * const icmp6_code_timxceed[] = { |
768 | "intrans" , "reass" , NULL |
769 | }; |
770 | |
771 | static const char * const icmp6_code_paramprob[] = { |
772 | "hdr_field" , "nxthdr_type" , "option" , NULL |
773 | }; |
774 | |
775 | /* not all informational icmps that have codes have a names array */ |
776 | #endif |
777 | |
778 | #endif /* !_NETINET_ICMP6_H_ */ |
779 | |