FreeBSD/Linux Kernel Cross Reference
sys/netinet/icmp6.h
1 /* $NetBSD: icmp6.h,v 1.28 2003/08/07 16:33:07 agc 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 } __attribute__((__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
102 /* RFC2292 decls */
103 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
104 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
105 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
106
107 #ifndef _KERNEL
108 /* the followings are for backward compatibility to old KAME apps. */
109 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY
110 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT
111 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE
112 #endif
113
114 #define ND_ROUTER_SOLICIT 133 /* router solicitation */
115 #define ND_ROUTER_ADVERT 134 /* router advertisment */
116 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
117 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */
118 #define ND_REDIRECT 137 /* redirect */
119
120 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
121
122 #define ICMP6_WRUREQUEST 139 /* who are you request */
123 #define ICMP6_WRUREPLY 140 /* who are you reply */
124 #define ICMP6_FQDN_QUERY 139 /* FQDN query */
125 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */
126 #define ICMP6_NI_QUERY 139 /* node information request */
127 #define ICMP6_NI_REPLY 140 /* node information reply */
128
129 /* The definitions below are experimental. TBA */
130 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */
131 #define MLD_MTRACE 201 /* mtrace messages */
132
133 #ifndef _KERNEL
134 /* the followings are for backward compatibility to old KAME apps. */
135 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP
136 #define MLD6_MTRACE MLD_MTRACE
137 #endif
138
139 #define ICMP6_MAXTYPE 201
140
141 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
142 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
143 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
144 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
145 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
146 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
147
148 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
149 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
150
151 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
152 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
153 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
154
155 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
156
157 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
158 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
159 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
160
161 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
162 #define ICMP6_NI_REFUSED 1 /* node information request is refused */
163 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
164
165 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
166 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
167 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
168
169 /* Used in kernel only */
170 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
171 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
172
173 /*
174 * Multicast Listener Discovery
175 */
176 struct mld_hdr {
177 struct icmp6_hdr mld_icmp6_hdr;
178 struct in6_addr mld_addr; /* multicast address */
179 } __attribute__((__packed__));
180
181 /* definitions to provide backward compatibility to old KAME applications */
182 #ifndef _KERNEL
183 #define mld6_hdr mld_hdr
184 #define mld6_type mld_type
185 #define mld6_code mld_code
186 #define mld6_cksum mld_cksum
187 #define mld6_maxdelay mld_maxdelay
188 #define mld6_reserved mld_reserved
189 #define mld6_addr mld_addr
190 #endif
191
192 /* shortcut macro definitions */
193 #define mld_type mld_icmp6_hdr.icmp6_type
194 #define mld_code mld_icmp6_hdr.icmp6_code
195 #define mld_cksum mld_icmp6_hdr.icmp6_cksum
196 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
197 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
198
199 /*
200 * Neighbor Discovery
201 */
202
203 struct nd_router_solicit { /* router solicitation */
204 struct icmp6_hdr nd_rs_hdr;
205 /* could be followed by options */
206 } __attribute__((__packed__));
207
208 #define nd_rs_type nd_rs_hdr.icmp6_type
209 #define nd_rs_code nd_rs_hdr.icmp6_code
210 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
211 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
212
213 struct nd_router_advert { /* router advertisement */
214 struct icmp6_hdr nd_ra_hdr;
215 u_int32_t nd_ra_reachable; /* reachable time */
216 u_int32_t nd_ra_retransmit; /* retransmit timer */
217 /* could be followed by options */
218 } __attribute__((__packed__));
219
220 #define nd_ra_type nd_ra_hdr.icmp6_type
221 #define nd_ra_code nd_ra_hdr.icmp6_code
222 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
223 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
224 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
225 #define ND_RA_FLAG_MANAGED 0x80
226 #define ND_RA_FLAG_OTHER 0x40
227 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
228
229 struct nd_neighbor_solicit { /* neighbor solicitation */
230 struct icmp6_hdr nd_ns_hdr;
231 struct in6_addr nd_ns_target; /*target address */
232 /* could be followed by options */
233 } __attribute__((__packed__));
234
235 #define nd_ns_type nd_ns_hdr.icmp6_type
236 #define nd_ns_code nd_ns_hdr.icmp6_code
237 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
238 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
239
240 struct nd_neighbor_advert { /* neighbor advertisement */
241 struct icmp6_hdr nd_na_hdr;
242 struct in6_addr nd_na_target; /* target address */
243 /* could be followed by options */
244 } __attribute__((__packed__));
245
246 #define nd_na_type nd_na_hdr.icmp6_type
247 #define nd_na_code nd_na_hdr.icmp6_code
248 #define nd_na_cksum nd_na_hdr.icmp6_cksum
249 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
250 #if BYTE_ORDER == BIG_ENDIAN
251 #define ND_NA_FLAG_ROUTER 0x80000000
252 #define ND_NA_FLAG_SOLICITED 0x40000000
253 #define ND_NA_FLAG_OVERRIDE 0x20000000
254 #else
255 #if BYTE_ORDER == LITTLE_ENDIAN
256 #define ND_NA_FLAG_ROUTER 0x80
257 #define ND_NA_FLAG_SOLICITED 0x40
258 #define ND_NA_FLAG_OVERRIDE 0x20
259 #endif
260 #endif
261
262 struct nd_redirect { /* redirect */
263 struct icmp6_hdr nd_rd_hdr;
264 struct in6_addr nd_rd_target; /* target address */
265 struct in6_addr nd_rd_dst; /* destination address */
266 /* could be followed by options */
267 } __attribute__((__packed__));
268
269 #define nd_rd_type nd_rd_hdr.icmp6_type
270 #define nd_rd_code nd_rd_hdr.icmp6_code
271 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
272 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
273
274 struct nd_opt_hdr { /* Neighbor discovery option header */
275 u_int8_t nd_opt_type;
276 u_int8_t nd_opt_len;
277 /* followed by option specific data*/
278 } __attribute__((__packed__));
279
280 #define ND_OPT_SOURCE_LINKADDR 1
281 #define ND_OPT_TARGET_LINKADDR 2
282 #define ND_OPT_PREFIX_INFORMATION 3
283 #define ND_OPT_REDIRECTED_HEADER 4
284 #define ND_OPT_MTU 5
285
286 struct nd_opt_prefix_info { /* prefix information */
287 u_int8_t nd_opt_pi_type;
288 u_int8_t nd_opt_pi_len;
289 u_int8_t nd_opt_pi_prefix_len;
290 u_int8_t nd_opt_pi_flags_reserved;
291 u_int32_t nd_opt_pi_valid_time;
292 u_int32_t nd_opt_pi_preferred_time;
293 u_int32_t nd_opt_pi_reserved2;
294 struct in6_addr nd_opt_pi_prefix;
295 } __attribute__((__packed__));
296
297 #define ND_OPT_PI_FLAG_ONLINK 0x80
298 #define ND_OPT_PI_FLAG_AUTO 0x40
299
300 struct nd_opt_rd_hdr { /* redirected header */
301 u_int8_t nd_opt_rh_type;
302 u_int8_t nd_opt_rh_len;
303 u_int16_t nd_opt_rh_reserved1;
304 u_int32_t nd_opt_rh_reserved2;
305 /* followed by IP header and data */
306 } __attribute__((__packed__));
307
308 struct nd_opt_mtu { /* MTU option */
309 u_int8_t nd_opt_mtu_type;
310 u_int8_t nd_opt_mtu_len;
311 u_int16_t nd_opt_mtu_reserved;
312 u_int32_t nd_opt_mtu_mtu;
313 } __attribute__((__packed__));
314
315 /*
316 * icmp6 namelookup
317 */
318
319 struct icmp6_namelookup {
320 struct icmp6_hdr icmp6_nl_hdr;
321 u_int8_t icmp6_nl_nonce[8];
322 int32_t icmp6_nl_ttl;
323 #if 0
324 u_int8_t icmp6_nl_len;
325 u_int8_t icmp6_nl_name[3];
326 #endif
327 /* could be followed by options */
328 } __attribute__((__packed__));
329
330 /*
331 * icmp6 node information
332 */
333 struct icmp6_nodeinfo {
334 struct icmp6_hdr icmp6_ni_hdr;
335 u_int8_t icmp6_ni_nonce[8];
336 /* could be followed by reply data */
337 } __attribute__((__packed__));
338
339 #define ni_type icmp6_ni_hdr.icmp6_type
340 #define ni_code icmp6_ni_hdr.icmp6_code
341 #define ni_cksum icmp6_ni_hdr.icmp6_cksum
342 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
343 #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
344
345 #define NI_QTYPE_NOOP 0 /* NOOP */
346 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
347 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
348 #define NI_QTYPE_DNSNAME 2 /* DNS Name */
349 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
350 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
351
352 #if BYTE_ORDER == BIG_ENDIAN
353 #define NI_SUPTYPE_FLAG_COMPRESS 0x1
354 #define NI_FQDN_FLAG_VALIDTTL 0x1
355 #elif BYTE_ORDER == LITTLE_ENDIAN
356 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100
357 #define NI_FQDN_FLAG_VALIDTTL 0x0100
358 #endif
359
360 #ifdef NAME_LOOKUPS_04
361 #if BYTE_ORDER == BIG_ENDIAN
362 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1
363 #define NI_NODEADDR_FLAG_SITELOCAL 0x2
364 #define NI_NODEADDR_FLAG_GLOBAL 0x4
365 #define NI_NODEADDR_FLAG_ALL 0x8
366 #define NI_NODEADDR_FLAG_TRUNCATE 0x10
367 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
368 #elif BYTE_ORDER == LITTLE_ENDIAN
369 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
370 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200
371 #define NI_NODEADDR_FLAG_GLOBAL 0x0400
372 #define NI_NODEADDR_FLAG_ALL 0x0800
373 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000
374 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
375 #endif
376 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
377 #if BYTE_ORDER == BIG_ENDIAN
378 #define NI_NODEADDR_FLAG_TRUNCATE 0x1
379 #define NI_NODEADDR_FLAG_ALL 0x2
380 #define NI_NODEADDR_FLAG_COMPAT 0x4
381 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8
382 #define NI_NODEADDR_FLAG_SITELOCAL 0x10
383 #define NI_NODEADDR_FLAG_GLOBAL 0x20
384 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
385 #elif BYTE_ORDER == LITTLE_ENDIAN
386 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100
387 #define NI_NODEADDR_FLAG_ALL 0x0200
388 #define NI_NODEADDR_FLAG_COMPAT 0x0400
389 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
390 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000
391 #define NI_NODEADDR_FLAG_GLOBAL 0x2000
392 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
393 #endif
394 #endif
395
396 struct ni_reply_fqdn {
397 u_int32_t ni_fqdn_ttl; /* TTL */
398 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
399 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
400 } __attribute__((__packed__));
401
402 /*
403 * Router Renumbering. as router-renum-08.txt
404 */
405 struct icmp6_router_renum { /* router renumbering header */
406 struct icmp6_hdr rr_hdr;
407 u_int8_t rr_segnum;
408 u_int8_t rr_flags;
409 u_int16_t rr_maxdelay;
410 u_int32_t rr_reserved;
411 } __attribute__((__packed__));
412
413 #define ICMP6_RR_FLAGS_TEST 0x80
414 #define ICMP6_RR_FLAGS_REQRESULT 0x40
415 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
416 #define ICMP6_RR_FLAGS_SPECSITE 0x10
417 #define ICMP6_RR_FLAGS_PREVDONE 0x08
418
419 #define rr_type rr_hdr.icmp6_type
420 #define rr_code rr_hdr.icmp6_code
421 #define rr_cksum rr_hdr.icmp6_cksum
422 #define rr_seqnum rr_hdr.icmp6_data32[0]
423
424 struct rr_pco_match { /* match prefix part */
425 u_int8_t rpm_code;
426 u_int8_t rpm_len;
427 u_int8_t rpm_ordinal;
428 u_int8_t rpm_matchlen;
429 u_int8_t rpm_minlen;
430 u_int8_t rpm_maxlen;
431 u_int16_t rpm_reserved;
432 struct in6_addr rpm_prefix;
433 } __attribute__((__packed__));
434
435 #define RPM_PCO_ADD 1
436 #define RPM_PCO_CHANGE 2
437 #define RPM_PCO_SETGLOBAL 3
438 #define RPM_PCO_MAX 4
439
440 struct rr_pco_use { /* use prefix part */
441 u_int8_t rpu_uselen;
442 u_int8_t rpu_keeplen;
443 u_int8_t rpu_ramask;
444 u_int8_t rpu_raflags;
445 u_int32_t rpu_vltime;
446 u_int32_t rpu_pltime;
447 u_int32_t rpu_flags;
448 struct in6_addr rpu_prefix;
449 } __attribute__((__packed__));
450 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
451 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
452
453 #if BYTE_ORDER == BIG_ENDIAN
454 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
455 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
456 #elif BYTE_ORDER == LITTLE_ENDIAN
457 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
458 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
459 #endif
460
461 struct rr_result { /* router renumbering result message */
462 u_int16_t rrr_flags;
463 u_int8_t rrr_ordinal;
464 u_int8_t rrr_matchedlen;
465 u_int32_t rrr_ifid;
466 struct in6_addr rrr_prefix;
467 } __attribute__((__packed__));
468 #if BYTE_ORDER == BIG_ENDIAN
469 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
470 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
471 #elif BYTE_ORDER == LITTLE_ENDIAN
472 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
473 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
474 #endif
475
476 /*
477 * icmp6 filter structures.
478 */
479
480 struct icmp6_filter {
481 u_int32_t icmp6_filt[8];
482 };
483
484 #ifdef _KERNEL
485 #define ICMP6_FILTER_SETPASSALL(filterp) \
486 do { \
487 int i; u_char *p; \
488 p = (u_char *)filterp; \
489 for (i = 0; i < sizeof(struct icmp6_filter); i++) \
490 p[i] = 0xff; \
491 } while (/*CONSTCOND*/ 0)
492 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
493 bzero(filterp, sizeof(struct icmp6_filter))
494 #else /* _KERNEL */
495 #define ICMP6_FILTER_SETPASSALL(filterp) \
496 memset(filterp, 0xff, sizeof(struct icmp6_filter))
497 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
498 memset(filterp, 0x00, sizeof(struct icmp6_filter))
499 #endif /* _KERNEL */
500
501 #define ICMP6_FILTER_SETPASS(type, filterp) \
502 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
503 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
504 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
505 #define ICMP6_FILTER_WILLPASS(type, filterp) \
506 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
507 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
508 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
509
510 /*
511 * Variables related to this implementation
512 * of the internet control message protocol version 6.
513 */
514 struct icmp6errstat {
515 u_quad_t icp6errs_dst_unreach_noroute;
516 u_quad_t icp6errs_dst_unreach_admin;
517 u_quad_t icp6errs_dst_unreach_beyondscope;
518 u_quad_t icp6errs_dst_unreach_addr;
519 u_quad_t icp6errs_dst_unreach_noport;
520 u_quad_t icp6errs_packet_too_big;
521 u_quad_t icp6errs_time_exceed_transit;
522 u_quad_t icp6errs_time_exceed_reassembly;
523 u_quad_t icp6errs_paramprob_header;
524 u_quad_t icp6errs_paramprob_nextheader;
525 u_quad_t icp6errs_paramprob_option;
526 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
527 u_quad_t icp6errs_unknown;
528 };
529
530 struct icmp6stat {
531 /* statistics related to icmp6 packets generated */
532 u_quad_t icp6s_error; /* # of calls to icmp6_error */
533 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */
534 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */
535 u_quad_t icp6s_outhist[256];
536 /* statistics related to input message processed */
537 u_quad_t icp6s_badcode; /* icmp6_code out of range */
538 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
539 u_quad_t icp6s_checksum; /* bad checksum */
540 u_quad_t icp6s_badlen; /* calculated bound mismatch */
541 /*
542 * number of responses: this member is inherited from netinet code, but
543 * for netinet6 code, it is already available in icp6s_outhist[].
544 */
545 u_quad_t icp6s_reflect;
546 u_quad_t icp6s_inhist[256];
547 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */
548 struct icmp6errstat icp6s_outerrhist;
549 #define icp6s_odst_unreach_noroute \
550 icp6s_outerrhist.icp6errs_dst_unreach_noroute
551 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
552 #define icp6s_odst_unreach_beyondscope \
553 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
554 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
555 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
556 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
557 #define icp6s_otime_exceed_transit \
558 icp6s_outerrhist.icp6errs_time_exceed_transit
559 #define icp6s_otime_exceed_reassembly \
560 icp6s_outerrhist.icp6errs_time_exceed_reassembly
561 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
562 #define icp6s_oparamprob_nextheader \
563 icp6s_outerrhist.icp6errs_paramprob_nextheader
564 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
565 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
566 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
567 u_quad_t icp6s_pmtuchg; /* path MTU changes */
568 u_quad_t icp6s_nd_badopt; /* bad ND options */
569 u_quad_t icp6s_badns; /* bad neighbor solicitation */
570 u_quad_t icp6s_badna; /* bad neighbor advertisement */
571 u_quad_t icp6s_badrs; /* bad router advertisement */
572 u_quad_t icp6s_badra; /* bad router advertisement */
573 u_quad_t icp6s_badredirect; /* bad redirect message */
574 };
575
576 /*
577 * Names for ICMP sysctl objects
578 */
579 #define ICMPV6CTL_STATS 1
580 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
581 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
582 #if 0 /*obsoleted*/
583 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
584 #endif
585 #define ICMPV6CTL_ND6_PRUNE 6
586 #define ICMPV6CTL_ND6_DELAY 8
587 #define ICMPV6CTL_ND6_UMAXTRIES 9
588 #define ICMPV6CTL_ND6_MMAXTRIES 10
589 #define ICMPV6CTL_ND6_USELOOPBACK 11
590 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
591 #define ICMPV6CTL_NODEINFO 13
592 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
593 #define ICMPV6CTL_ND6_MAXNUDHINT 15
594 #define ICMPV6CTL_MTUDISC_HIWAT 16
595 #define ICMPV6CTL_MTUDISC_LOWAT 17
596 #define ICMPV6CTL_ND6_DEBUG 18
597 #define ICMPV6CTL_ND6_DRLIST 19
598 #define ICMPV6CTL_ND6_PRLIST 20
599 #define ICMPV6CTL_MAXID 21
600
601 #define ICMPV6CTL_NAMES { \
602 { 0, 0 }, \
603 { 0, 0 }, \
604 { "rediraccept", CTLTYPE_INT }, \
605 { "redirtimeout", CTLTYPE_INT }, \
606 { 0, 0 }, \
607 { 0, 0 }, \
608 { "nd6_prune", CTLTYPE_INT }, \
609 { 0, 0 }, \
610 { "nd6_delay", CTLTYPE_INT }, \
611 { "nd6_umaxtries", CTLTYPE_INT }, \
612 { "nd6_mmaxtries", CTLTYPE_INT }, \
613 { "nd6_useloopback", CTLTYPE_INT }, \
614 { 0, 0 }, \
615 { "nodeinfo", CTLTYPE_INT }, \
616 { "errppslimit", CTLTYPE_INT }, \
617 { "nd6_maxnudhint", CTLTYPE_INT }, \
618 { "mtudisc_hiwat", CTLTYPE_INT }, \
619 { "mtudisc_lowat", CTLTYPE_INT }, \
620 { "nd6_debug", CTLTYPE_INT }, \
621 { 0, 0 }, \
622 { 0, 0 }, \
623 }
624
625 #define RTF_PROBEMTU RTF_PROTO1
626
627 #ifdef _KERNEL
628 # ifdef __STDC__
629 struct rtentry;
630 struct rttimer;
631 struct in6_multi;
632 # endif
633 void icmp6_init __P((void));
634 void icmp6_paramerror __P((struct mbuf *, int));
635 void icmp6_error __P((struct mbuf *, int, int, int));
636 int icmp6_input __P((struct mbuf **, int *, int));
637 void icmp6_fasttimo __P((void));
638 void icmp6_reflect __P((struct mbuf *, size_t));
639 void icmp6_prepare __P((struct mbuf *));
640 void icmp6_redirect_input __P((struct mbuf *, int));
641 void icmp6_redirect_output __P((struct mbuf *, struct rtentry *));
642 int icmp6_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
643
644 struct ip6ctlparam;
645 void icmp6_mtudisc_update __P((struct ip6ctlparam *, int));
646 void icmp6_mtudisc_callback_register __P((void (*)(struct in6_addr *)));
647
648 /* XXX: is this the right place for these macros? */
649 #define icmp6_ifstat_inc(ifp, tag) \
650 do { \
651 if (ifp) \
652 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
653 } while (/*CONSTCOND*/ 0)
654
655 #define icmp6_ifoutstat_inc(ifp, type, code) \
656 do { \
657 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
658 switch(type) { \
659 case ICMP6_DST_UNREACH: \
660 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
661 if (code == ICMP6_DST_UNREACH_ADMIN) \
662 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
663 break; \
664 case ICMP6_PACKET_TOO_BIG: \
665 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
666 break; \
667 case ICMP6_TIME_EXCEEDED: \
668 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
669 break; \
670 case ICMP6_PARAM_PROB: \
671 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
672 break; \
673 case ICMP6_ECHO_REQUEST: \
674 icmp6_ifstat_inc(ifp, ifs6_out_echo); \
675 break; \
676 case ICMP6_ECHO_REPLY: \
677 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
678 break; \
679 case MLD_LISTENER_QUERY: \
680 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
681 break; \
682 case MLD_LISTENER_REPORT: \
683 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
684 break; \
685 case MLD_LISTENER_DONE: \
686 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
687 break; \
688 case ND_ROUTER_SOLICIT: \
689 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
690 break; \
691 case ND_ROUTER_ADVERT: \
692 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
693 break; \
694 case ND_NEIGHBOR_SOLICIT: \
695 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
696 break; \
697 case ND_NEIGHBOR_ADVERT: \
698 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
699 break; \
700 case ND_REDIRECT: \
701 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
702 break; \
703 } \
704 } while (/*CONSTCOND*/ 0)
705
706 extern int icmp6_rediraccept; /* accept/process redirects */
707 extern int icmp6_redirtimeout; /* cache time for redirect routes */
708 #endif /* _KERNEL */
709
710 #endif /* not _NETINET_ICMP6_H_ */
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