]> The Tcpdump Group git mirrors - tcpdump/blob - icmp6.h
projects / tcpdump / blob


b51c9ed28f4df82540a268372bdc97bcb2a80c08
[tcpdump] / icmp6.h
1 /* @(#) $Header: /tcpdump/master/tcpdump/icmp6.h,v 1.14 2002-12-11 07:13:52 guy Exp $ (LBL) */
2 /* $NetBSD: icmp6.h,v 1.13 2000/08/03 16:30:37 itojun Exp $ */
3 /* $KAME: icmp6.h,v 1.22 2000/08/03 15:25:16 jinmei Exp $ */
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. All advertising materials mentioning features or use of this software
47 * must display the following acknowledgement:
48 * This product includes software developed by the University of
49 * California, Berkeley and its contributors.
50 * 4. Neither the name of the University nor the names of its contributors
51 * may be used to endorse or promote products derived from this software
52 * without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * SUCH DAMAGE.
65 *
66 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
67 */
68
69 #ifndef _NETINET_ICMP6_H_
70 #define _NETINET_ICMP6_H_
71
72 struct icmp6_hdr {
73 u_int8_t icmp6_type; /* type field */
74 u_int8_t icmp6_code; /* code field */
75 u_int16_t icmp6_cksum; /* checksum field */
76 union {
77 u_int32_t icmp6_un_data32[1]; /* type-specific field */
78 u_int16_t icmp6_un_data16[2]; /* type-specific field */
79 u_int8_t icmp6_un_data8[4]; /* type-specific field */
80 } icmp6_dataun;
81 };
82
83 #define icmp6_data32 icmp6_dataun.icmp6_un_data32
84 #define icmp6_data16 icmp6_dataun.icmp6_un_data16
85 #define icmp6_data8 icmp6_dataun.icmp6_un_data8
86 #define icmp6_pptr icmp6_data32[0] /* parameter prob */
87 #define icmp6_mtu icmp6_data32[0] /* packet too big */
88 #define icmp6_id icmp6_data16[0] /* echo request/reply */
89 #define icmp6_seq icmp6_data16[1] /* echo request/reply */
90 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
91
92 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
93 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
94 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
95 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */
96
97 #define ICMP6_ECHO_REQUEST 128 /* echo service */
98 #define ICMP6_ECHO_REPLY 129 /* echo reply */
99 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
100 #define MLD6_LISTENER_QUERY 130 /* multicast listener query */
101 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
102 #define MLD6_LISTENER_REPORT 131 /* multicast listener report */
103 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
104 #define MLD6_LISTENER_DONE 132 /* multicast listener done */
105
106 #define ND_ROUTER_SOLICIT 133 /* router solicitation */
107 #define ND_ROUTER_ADVERT 134 /* router advertisment */
108 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
109 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */
110 #define ND_REDIRECT 137 /* redirect */
111
112 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
113
114 #define ICMP6_WRUREQUEST 139 /* who are you request */
115 #define ICMP6_WRUREPLY 140 /* who are you reply */
116 #define ICMP6_FQDN_QUERY 139 /* FQDN query */
117 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */
118 #define ICMP6_NI_QUERY 139 /* node information request */
119 #define ICMP6_NI_REPLY 140 /* node information reply */
120
121 /* The definitions below are experimental. TBA */
122 #define MLD6_MTRACE_RESP 141 /* mtrace response(to sender) */
123 #define MLD6_MTRACE 142 /* mtrace messages */
124
125 /* Folloing numbers are defined in the mobile-ip draft. */
126 #define ICMP6_HADISCOV_REQUEST 150 /* XXX To be authorized */
127 #define ICMP6_HADISCOV_REPLY 151 /* XXX To be authorized */
128 #define ICMP6_MOBILEPREFIX_SOLICIT 152 /* XXX To be authorized */
129 #define ICMP6_MOBILEPREFIX_ADVERT 153 /* XXX To be authorized */
130
131 #define ICMP6_MAXTYPE 153
132
133 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
134 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
135 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
136 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
137 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
138 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
139
140 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
141 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
142
143 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
144 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
145 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
146
147 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
148
149 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
150 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
151 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
152
153 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
154 #define ICMP6_NI_REFUSED 1 /* node information request is refused */
155 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
156
157 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
158 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
159 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
160
161 /* Used in kernel only */
162 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
163 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
164
165 /*
166 * Multicast Listener Discovery
167 */
168 struct mld6_hdr {
169 struct icmp6_hdr mld6_hdr;
170 struct in6_addr mld6_addr; /* multicast address */
171 };
172
173 #define mld6_type mld6_hdr.icmp6_type
174 #define mld6_code mld6_hdr.icmp6_code
175 #define mld6_cksum mld6_hdr.icmp6_cksum
176 #define mld6_maxdelay mld6_hdr.icmp6_data16[0]
177 #define mld6_reserved mld6_hdr.icmp6_data16[1]
178
179 /*
180 * Neighbor Discovery
181 */
182
183 struct nd_router_solicit { /* router solicitation */
184 struct icmp6_hdr nd_rs_hdr;
185 /* could be followed by options */
186 };
187
188 #define nd_rs_type nd_rs_hdr.icmp6_type
189 #define nd_rs_code nd_rs_hdr.icmp6_code
190 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
191 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
192
193 struct nd_router_advert { /* router advertisement */
194 struct icmp6_hdr nd_ra_hdr;
195 u_int32_t nd_ra_reachable; /* reachable time */
196 u_int32_t nd_ra_retransmit; /* retransmit timer */
197 /* could be followed by options */
198 };
199
200 #define nd_ra_type nd_ra_hdr.icmp6_type
201 #define nd_ra_code nd_ra_hdr.icmp6_code
202 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
203 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
204 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
205 #define ND_RA_FLAG_MANAGED 0x80
206 #define ND_RA_FLAG_OTHER 0x40
207 #define ND_RA_FLAG_HOME_AGENT 0x20
208
209 /*
210 * Router preference values based on draft-draves-ipngwg-router-selection-01.
211 * These are non-standard definitions.
212 */
213 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
214
215 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
216 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
217 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
218 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
219
220 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
221
222 struct nd_neighbor_solicit { /* neighbor solicitation */
223 struct icmp6_hdr nd_ns_hdr;
224 struct in6_addr nd_ns_target; /*target address */
225 /* could be followed by options */
226 };
227
228 #define nd_ns_type nd_ns_hdr.icmp6_type
229 #define nd_ns_code nd_ns_hdr.icmp6_code
230 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
231 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
232
233 struct nd_neighbor_advert { /* neighbor advertisement */
234 struct icmp6_hdr nd_na_hdr;
235 struct in6_addr nd_na_target; /* target address */
236 /* could be followed by options */
237 };
238
239 #define nd_na_type nd_na_hdr.icmp6_type
240 #define nd_na_code nd_na_hdr.icmp6_code
241 #define nd_na_cksum nd_na_hdr.icmp6_cksum
242 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
243 /* netowkr endian */
244 #define ND_NA_FLAG_ROUTER ((u_int32_t)htonl(0x80000000))
245 #define ND_NA_FLAG_SOLICITED ((u_int32_t)htonl(0x40000000))
246 #define ND_NA_FLAG_OVERRIDE ((u_int32_t)htonl(0x20000000))
247
248 struct nd_redirect { /* redirect */
249 struct icmp6_hdr nd_rd_hdr;
250 struct in6_addr nd_rd_target; /* target address */
251 struct in6_addr nd_rd_dst; /* destination address */
252 /* could be followed by options */
253 };
254
255 #define nd_rd_type nd_rd_hdr.icmp6_type
256 #define nd_rd_code nd_rd_hdr.icmp6_code
257 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
258 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
259
260 struct nd_opt_hdr { /* Neighbor discovery option header */
261 u_int8_t nd_opt_type;
262 u_int8_t nd_opt_len;
263 /* followed by option specific data*/
264 };
265
266 #define ND_OPT_SOURCE_LINKADDR 1
267 #define ND_OPT_TARGET_LINKADDR 2
268 #define ND_OPT_PREFIX_INFORMATION 3
269 #define ND_OPT_REDIRECTED_HEADER 4
270 #define ND_OPT_MTU 5
271 #define ND_OPT_ADVINTERVAL 7
272 #define ND_OPT_HOMEAGENT_INFO 8
273 #define ND_OPT_ROUTE_INFO 9 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
274
275
276 struct nd_opt_prefix_info { /* prefix information */
277 u_int8_t nd_opt_pi_type;
278 u_int8_t nd_opt_pi_len;
279 u_int8_t nd_opt_pi_prefix_len;
280 u_int8_t nd_opt_pi_flags_reserved;
281 u_int32_t nd_opt_pi_valid_time;
282 u_int32_t nd_opt_pi_preferred_time;
283 u_int32_t nd_opt_pi_reserved2;
284 struct in6_addr nd_opt_pi_prefix;
285 };
286
287 #define ND_OPT_PI_FLAG_ONLINK 0x80
288 #define ND_OPT_PI_FLAG_AUTO 0x40
289 #define ND_OPT_PI_FLAG_ROUTER 0x20 /*2292bis*/
290
291 struct nd_opt_rd_hdr { /* redirected header */
292 u_int8_t nd_opt_rh_type;
293 u_int8_t nd_opt_rh_len;
294 u_int16_t nd_opt_rh_reserved1;
295 u_int32_t nd_opt_rh_reserved2;
296 /* followed by IP header and data */
297 };
298
299 struct nd_opt_mtu { /* MTU option */
300 u_int8_t nd_opt_mtu_type;
301 u_int8_t nd_opt_mtu_len;
302 u_int16_t nd_opt_mtu_reserved;
303 u_int32_t nd_opt_mtu_mtu;
304 };
305
306 struct nd_opt_advinterval { /* Advertisement interval option */
307 u_int8_t nd_opt_adv_type;
308 u_int8_t nd_opt_adv_len;
309 u_int16_t nd_opt_adv_reserved;
310 u_int32_t nd_opt_adv_interval;
311 };
312
313 struct nd_opt_homeagent_info { /* Home Agent info */
314 u_int8_t nd_opt_hai_type;
315 u_int8_t nd_opt_hai_len;
316 u_int16_t nd_opt_hai_reserved;
317 int16_t nd_opt_hai_preference;
318 u_int16_t nd_opt_hai_lifetime;
319 };
320
321 struct nd_opt_route_info { /* route info */
322 u_int8_t nd_opt_rti_type;
323 u_int8_t nd_opt_rti_len;
324 u_int8_t nd_opt_rti_prefixlen;
325 u_int8_t nd_opt_rti_flags;
326 u_int32_t nd_opt_rti_lifetime;
327 /* prefix follows */
328 };
329
330 /*
331 * icmp6 namelookup
332 */
333
334 struct icmp6_namelookup {
335 struct icmp6_hdr icmp6_nl_hdr;
336 u_int8_t icmp6_nl_nonce[8];
337 int32_t icmp6_nl_ttl;
338 #if 0
339 u_int8_t icmp6_nl_len;
340 u_int8_t icmp6_nl_name[3];
341 #endif
342 /* could be followed by options */
343 };
344
345 /*
346 * icmp6 node information
347 */
348 struct icmp6_nodeinfo {
349 struct icmp6_hdr icmp6_ni_hdr;
350 u_int8_t icmp6_ni_nonce[8];
351 /* could be followed by reply data */
352 };
353
354 #define ni_type icmp6_ni_hdr.icmp6_type
355 #define ni_code icmp6_ni_hdr.icmp6_code
356 #define ni_cksum icmp6_ni_hdr.icmp6_cksum
357 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
358 #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
359
360 #define NI_QTYPE_NOOP 0 /* NOOP */
361 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
362 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
363 #define NI_QTYPE_DNSNAME 2 /* DNS Name */
364 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
365 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
366
367 /* network endian */
368 #define NI_SUPTYPE_FLAG_COMPRESS ((u_int16_t)htons(0x1))
369 #define NI_FQDN_FLAG_VALIDTTL ((u_int16_t)htons(0x1))
370
371 /* network endian */
372 #define NI_NODEADDR_FLAG_TRUNCATE ((u_int16_t)htons(0x1))
373 #define NI_NODEADDR_FLAG_ALL ((u_int16_t)htons(0x2))
374 #define NI_NODEADDR_FLAG_COMPAT ((u_int16_t)htons(0x4))
375 #define NI_NODEADDR_FLAG_LINKLOCAL ((u_int16_t)htons(0x8))
376 #define NI_NODEADDR_FLAG_SITELOCAL ((u_int16_t)htons(0x10))
377 #define NI_NODEADDR_FLAG_GLOBAL ((u_int16_t)htons(0x20))
378 #define NI_NODEADDR_FLAG_ANYCAST ((u_int16_t)htons(0x40)) /* just experimental. not in spec */
379
380 struct ni_reply_fqdn {
381 u_int32_t ni_fqdn_ttl; /* TTL */
382 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
383 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
384 };
385
386 /*
387 * Router Renumbering. as router-renum-08.txt
388 */
389 struct icmp6_router_renum { /* router renumbering header */
390 struct icmp6_hdr rr_hdr;
391 u_int8_t rr_segnum;
392 u_int8_t rr_flags;
393 u_int16_t rr_maxdelay;
394 u_int32_t rr_reserved;
395 };
396 #define ICMP6_RR_FLAGS_TEST 0x80
397 #define ICMP6_RR_FLAGS_REQRESULT 0x40
398 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
399 #define ICMP6_RR_FLAGS_SPECSITE 0x10
400 #define ICMP6_RR_FLAGS_PREVDONE 0x08
401
402 #define rr_type rr_hdr.icmp6_type
403 #define rr_code rr_hdr.icmp6_code
404 #define rr_cksum rr_hdr.icmp6_cksum
405 #define rr_seqnum rr_hdr.icmp6_data32[0]
406
407 struct rr_pco_match { /* match prefix part */
408 u_int8_t rpm_code;
409 u_int8_t rpm_len;
410 u_int8_t rpm_ordinal;
411 u_int8_t rpm_matchlen;
412 u_int8_t rpm_minlen;
413 u_int8_t rpm_maxlen;
414 u_int16_t rpm_reserved;
415 struct in6_addr rpm_prefix;
416 };
417
418 #define RPM_PCO_ADD 1
419 #define RPM_PCO_CHANGE 2
420 #define RPM_PCO_SETGLOBAL 3
421 #define RPM_PCO_MAX 4
422
423 struct rr_pco_use { /* use prefix part */
424 u_int8_t rpu_uselen;
425 u_int8_t rpu_keeplen;
426 u_int8_t rpu_ramask;
427 u_int8_t rpu_raflags;
428 u_int32_t rpu_vltime;
429 u_int32_t rpu_pltime;
430 u_int32_t rpu_flags;
431 struct in6_addr rpu_prefix;
432 };
433 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
434 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
435
436 /* network endian */
437 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME ((u_int32_t)htonl(0x80000000))
438 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME ((u_int32_t)htonl(0x40000000))
439
440 struct rr_result { /* router renumbering result message */
441 u_int16_t rrr_flags;
442 u_int8_t rrr_ordinal;
443 u_int8_t rrr_matchedlen;
444 u_int32_t rrr_ifid;
445 struct in6_addr rrr_prefix;
446 };
447 /* network endian */
448 #define ICMP6_RR_RESULT_FLAGS_OOB ((u_int16_t)htons(0x0002))
449 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN ((u_int16_t)htons(0x0001))
450
451 #endif /* not _NETINET_ICMP6_H_ */
[mirror] the TCPdump network dissector