FreeBSD/Linux Kernel Cross Reference
sys/netinet/icmp6.h
1 /* $FreeBSD: releng/5.4/sys/netinet/icmp6.h 145335 2005-04-20 19:11:07Z cvs2svn $ */
2 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */
3
4 /*-
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 /*-
34 * Copyright (c) 1982, 1986, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 4. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
62 */
63
64 #ifndef _NETINET_ICMP6_H_
65 #define _NETINET_ICMP6_H_
66
67 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr)
68 - sizeof(struct icmp6_hdr) */
69
70 struct icmp6_hdr {
71 u_int8_t icmp6_type; /* type field */
72 u_int8_t icmp6_code; /* code field */
73 u_int16_t icmp6_cksum; /* checksum field */
74 union {
75 u_int32_t icmp6_un_data32[1]; /* type-specific field */
76 u_int16_t icmp6_un_data16[2]; /* type-specific field */
77 u_int8_t icmp6_un_data8[4]; /* type-specific field */
78 } icmp6_dataun;
79 } __packed;
80
81 #define icmp6_data32 icmp6_dataun.icmp6_un_data32
82 #define icmp6_data16 icmp6_dataun.icmp6_un_data16
83 #define icmp6_data8 icmp6_dataun.icmp6_un_data8
84 #define icmp6_pptr icmp6_data32[0] /* parameter prob */
85 #define icmp6_mtu icmp6_data32[0] /* packet too big */
86 #define icmp6_id icmp6_data16[0] /* echo request/reply */
87 #define icmp6_seq icmp6_data16[1] /* echo request/reply */
88 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
89
90 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
91 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
92 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
93 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */
94
95 #define ICMP6_ECHO_REQUEST 128 /* echo service */
96 #define ICMP6_ECHO_REPLY 129 /* echo reply */
97 #define MLD_LISTENER_QUERY 130 /* multicast listener query */
98 #define MLD_LISTENER_REPORT 131 /* multicast listener report */
99 #define MLD_LISTENER_DONE 132 /* multicast listener done */
100
101 /* RFC2292 decls */
102 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
103 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
104 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
105
106 #ifndef _KERNEL
107 /* the followings are for backward compatibility to old KAME apps. */
108 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY
109 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT
110 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE
111 #endif
112
113 #define ND_ROUTER_SOLICIT 133 /* router solicitation */
114 #define ND_ROUTER_ADVERT 134 /* router advertisment */
115 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
116 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */
117 #define ND_REDIRECT 137 /* redirect */
118
119 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
120
121 #define ICMP6_WRUREQUEST 139 /* who are you request */
122 #define ICMP6_WRUREPLY 140 /* who are you reply */
123 #define ICMP6_FQDN_QUERY 139 /* FQDN query */
124 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */
125 #define ICMP6_NI_QUERY 139 /* node information request */
126 #define ICMP6_NI_REPLY 140 /* node information reply */
127
128 /* The definitions below are experimental. TBA */
129 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */
130 #define MLD_MTRACE 201 /* mtrace messages */
131
132 #ifndef _KERNEL
133 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP
134 #define MLD6_MTRACE MLD_MTRACE
135 #endif
136
137 #define ICMP6_MAXTYPE 201
138
139 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
140 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
141 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
142 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
143 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
144 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
145
146 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
147 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
148
149 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
150 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
151 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
152
153 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
154
155 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
156 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
157 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
158
159 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
160 #define ICMP6_NI_REFUSED 1 /* node information request is refused */
161 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
162
163 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
164 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
165 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
166
167 /* Used in kernel only */
168 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
169 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
170
171 /*
172 * Multicast Listener Discovery
173 */
174 struct mld_hdr {
175 struct icmp6_hdr mld_icmp6_hdr;
176 struct in6_addr mld_addr; /* multicast address */
177 } __packed;
178
179 /* definitions to provide backward compatibility to old KAME applications */
180 #ifndef _KERNEL
181 #define mld6_hdr mld_hdr
182 #define mld6_type mld_type
183 #define mld6_code mld_code
184 #define mld6_cksum mld_cksum
185 #define mld6_maxdelay mld_maxdelay
186 #define mld6_reserved mld_reserved
187 #define mld6_addr mld_addr
188 #endif
189
190 /* shortcut macro definitions */
191 #define mld_type mld_icmp6_hdr.icmp6_type
192 #define mld_code mld_icmp6_hdr.icmp6_code
193 #define mld_cksum mld_icmp6_hdr.icmp6_cksum
194 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
195 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
196
197 /*
198 * Neighbor Discovery
199 */
200
201 struct nd_router_solicit { /* router solicitation */
202 struct icmp6_hdr nd_rs_hdr;
203 /* could be followed by options */
204 } __packed;
205
206 #define nd_rs_type nd_rs_hdr.icmp6_type
207 #define nd_rs_code nd_rs_hdr.icmp6_code
208 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
209 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
210
211 struct nd_router_advert { /* router advertisement */
212 struct icmp6_hdr nd_ra_hdr;
213 u_int32_t nd_ra_reachable; /* reachable time */
214 u_int32_t nd_ra_retransmit; /* retransmit timer */
215 /* could be followed by options */
216 } __packed;
217
218 #define nd_ra_type nd_ra_hdr.icmp6_type
219 #define nd_ra_code nd_ra_hdr.icmp6_code
220 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
221 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
222 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
223 #define ND_RA_FLAG_MANAGED 0x80
224 #define ND_RA_FLAG_OTHER 0x40
225 #define ND_RA_FLAG_HA 0x20
226
227 /*
228 * Router preference values based on draft-draves-ipngwg-router-selection-01.
229 * These are non-standard definitions.
230 */
231 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
232
233 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
234 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
235 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
236 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
237
238 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
239
240 struct nd_neighbor_solicit { /* neighbor solicitation */
241 struct icmp6_hdr nd_ns_hdr;
242 struct in6_addr nd_ns_target; /*target address */
243 /* could be followed by options */
244 } __packed;
245
246 #define nd_ns_type nd_ns_hdr.icmp6_type
247 #define nd_ns_code nd_ns_hdr.icmp6_code
248 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
249 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
250
251 struct nd_neighbor_advert { /* neighbor advertisement */
252 struct icmp6_hdr nd_na_hdr;
253 struct in6_addr nd_na_target; /* target address */
254 /* could be followed by options */
255 } __packed;
256
257 #define nd_na_type nd_na_hdr.icmp6_type
258 #define nd_na_code nd_na_hdr.icmp6_code
259 #define nd_na_cksum nd_na_hdr.icmp6_cksum
260 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
261 #if BYTE_ORDER == BIG_ENDIAN
262 #define ND_NA_FLAG_ROUTER 0x80000000
263 #define ND_NA_FLAG_SOLICITED 0x40000000
264 #define ND_NA_FLAG_OVERRIDE 0x20000000
265 #else
266 #if BYTE_ORDER == LITTLE_ENDIAN
267 #define ND_NA_FLAG_ROUTER 0x80
268 #define ND_NA_FLAG_SOLICITED 0x40
269 #define ND_NA_FLAG_OVERRIDE 0x20
270 #endif
271 #endif
272
273 struct nd_redirect { /* redirect */
274 struct icmp6_hdr nd_rd_hdr;
275 struct in6_addr nd_rd_target; /* target address */
276 struct in6_addr nd_rd_dst; /* destination address */
277 /* could be followed by options */
278 } __packed;
279
280 #define nd_rd_type nd_rd_hdr.icmp6_type
281 #define nd_rd_code nd_rd_hdr.icmp6_code
282 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
283 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
284
285 struct nd_opt_hdr { /* Neighbor discovery option header */
286 u_int8_t nd_opt_type;
287 u_int8_t nd_opt_len;
288 /* followed by option specific data*/
289 } __packed;
290
291 #define ND_OPT_SOURCE_LINKADDR 1
292 #define ND_OPT_TARGET_LINKADDR 2
293 #define ND_OPT_PREFIX_INFORMATION 3
294 #define ND_OPT_REDIRECTED_HEADER 4
295 #define ND_OPT_MTU 5
296
297 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
298
299 struct nd_opt_prefix_info { /* prefix information */
300 u_int8_t nd_opt_pi_type;
301 u_int8_t nd_opt_pi_len;
302 u_int8_t nd_opt_pi_prefix_len;
303 u_int8_t nd_opt_pi_flags_reserved;
304 u_int32_t nd_opt_pi_valid_time;
305 u_int32_t nd_opt_pi_preferred_time;
306 u_int32_t nd_opt_pi_reserved2;
307 struct in6_addr nd_opt_pi_prefix;
308 } __packed;
309
310 #define ND_OPT_PI_FLAG_ONLINK 0x80
311 #define ND_OPT_PI_FLAG_AUTO 0x40
312
313 struct nd_opt_rd_hdr { /* redirected header */
314 u_int8_t nd_opt_rh_type;
315 u_int8_t nd_opt_rh_len;
316 u_int16_t nd_opt_rh_reserved1;
317 u_int32_t nd_opt_rh_reserved2;
318 /* followed by IP header and data */
319 } __packed;
320
321 struct nd_opt_mtu { /* MTU option */
322 u_int8_t nd_opt_mtu_type;
323 u_int8_t nd_opt_mtu_len;
324 u_int16_t nd_opt_mtu_reserved;
325 u_int32_t nd_opt_mtu_mtu;
326 } __packed;
327
328 struct nd_opt_route_info { /* route info */
329 u_int8_t nd_opt_rti_type;
330 u_int8_t nd_opt_rti_len;
331 u_int8_t nd_opt_rti_prefixlen;
332 u_int8_t nd_opt_rti_flags;
333 u_int32_t nd_opt_rti_lifetime;
334 /* prefix follows */
335 } __packed;
336
337 /*
338 * icmp6 namelookup
339 */
340
341 struct icmp6_namelookup {
342 struct icmp6_hdr icmp6_nl_hdr;
343 u_int8_t icmp6_nl_nonce[8];
344 int32_t icmp6_nl_ttl;
345 #if 0
346 u_int8_t icmp6_nl_len;
347 u_int8_t icmp6_nl_name[3];
348 #endif
349 /* could be followed by options */
350 } __packed;
351
352 /*
353 * icmp6 node information
354 */
355 struct icmp6_nodeinfo {
356 struct icmp6_hdr icmp6_ni_hdr;
357 u_int8_t icmp6_ni_nonce[8];
358 /* could be followed by reply data */
359 } __packed;
360
361 #define ni_type icmp6_ni_hdr.icmp6_type
362 #define ni_code icmp6_ni_hdr.icmp6_code
363 #define ni_cksum icmp6_ni_hdr.icmp6_cksum
364 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
365 #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
366
367 #define NI_QTYPE_NOOP 0 /* NOOP */
368 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
369 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
370 #define NI_QTYPE_DNSNAME 2 /* DNS Name */
371 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
372 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
373
374 #if BYTE_ORDER == BIG_ENDIAN
375 #define NI_SUPTYPE_FLAG_COMPRESS 0x1
376 #define NI_FQDN_FLAG_VALIDTTL 0x1
377 #elif BYTE_ORDER == LITTLE_ENDIAN
378 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100
379 #define NI_FQDN_FLAG_VALIDTTL 0x0100
380 #endif
381
382 #ifdef NAME_LOOKUPS_04
383 #if BYTE_ORDER == BIG_ENDIAN
384 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1
385 #define NI_NODEADDR_FLAG_SITELOCAL 0x2
386 #define NI_NODEADDR_FLAG_GLOBAL 0x4
387 #define NI_NODEADDR_FLAG_ALL 0x8
388 #define NI_NODEADDR_FLAG_TRUNCATE 0x10
389 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
390 #elif BYTE_ORDER == LITTLE_ENDIAN
391 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
392 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200
393 #define NI_NODEADDR_FLAG_GLOBAL 0x0400
394 #define NI_NODEADDR_FLAG_ALL 0x0800
395 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000
396 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
397 #endif
398 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
399 #if BYTE_ORDER == BIG_ENDIAN
400 #define NI_NODEADDR_FLAG_TRUNCATE 0x1
401 #define NI_NODEADDR_FLAG_ALL 0x2
402 #define NI_NODEADDR_FLAG_COMPAT 0x4
403 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8
404 #define NI_NODEADDR_FLAG_SITELOCAL 0x10
405 #define NI_NODEADDR_FLAG_GLOBAL 0x20
406 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
407 #elif BYTE_ORDER == LITTLE_ENDIAN
408 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100
409 #define NI_NODEADDR_FLAG_ALL 0x0200
410 #define NI_NODEADDR_FLAG_COMPAT 0x0400
411 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
412 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000
413 #define NI_NODEADDR_FLAG_GLOBAL 0x2000
414 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
415 #endif
416 #endif
417
418 struct ni_reply_fqdn {
419 u_int32_t ni_fqdn_ttl; /* TTL */
420 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
421 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
422 } __packed;
423
424 /*
425 * Router Renumbering. as router-renum-08.txt
426 */
427 struct icmp6_router_renum { /* router renumbering header */
428 struct icmp6_hdr rr_hdr;
429 u_int8_t rr_segnum;
430 u_int8_t rr_flags;
431 u_int16_t rr_maxdelay;
432 u_int32_t rr_reserved;
433 } __packed;
434
435 #define ICMP6_RR_FLAGS_TEST 0x80
436 #define ICMP6_RR_FLAGS_REQRESULT 0x40
437 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
438 #define ICMP6_RR_FLAGS_SPECSITE 0x10
439 #define ICMP6_RR_FLAGS_PREVDONE 0x08
440
441 #define rr_type rr_hdr.icmp6_type
442 #define rr_code rr_hdr.icmp6_code
443 #define rr_cksum rr_hdr.icmp6_cksum
444 #define rr_seqnum rr_hdr.icmp6_data32[0]
445
446 struct rr_pco_match { /* match prefix part */
447 u_int8_t rpm_code;
448 u_int8_t rpm_len;
449 u_int8_t rpm_ordinal;
450 u_int8_t rpm_matchlen;
451 u_int8_t rpm_minlen;
452 u_int8_t rpm_maxlen;
453 u_int16_t rpm_reserved;
454 struct in6_addr rpm_prefix;
455 } __packed;
456
457 #define RPM_PCO_ADD 1
458 #define RPM_PCO_CHANGE 2
459 #define RPM_PCO_SETGLOBAL 3
460 #define RPM_PCO_MAX 4
461
462 struct rr_pco_use { /* use prefix part */
463 u_int8_t rpu_uselen;
464 u_int8_t rpu_keeplen;
465 u_int8_t rpu_ramask;
466 u_int8_t rpu_raflags;
467 u_int32_t rpu_vltime;
468 u_int32_t rpu_pltime;
469 u_int32_t rpu_flags;
470 struct in6_addr rpu_prefix;
471 } __packed;
472 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
473 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
474
475 #if BYTE_ORDER == BIG_ENDIAN
476 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
477 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
478 #elif BYTE_ORDER == LITTLE_ENDIAN
479 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
480 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
481 #endif
482
483 struct rr_result { /* router renumbering result message */
484 u_int16_t rrr_flags;
485 u_int8_t rrr_ordinal;
486 u_int8_t rrr_matchedlen;
487 u_int32_t rrr_ifid;
488 struct in6_addr rrr_prefix;
489 } __packed;
490 #if BYTE_ORDER == BIG_ENDIAN
491 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
492 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
493 #elif BYTE_ORDER == LITTLE_ENDIAN
494 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
495 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
496 #endif
497
498 /*
499 * icmp6 filter structures.
500 */
501
502 struct icmp6_filter {
503 u_int32_t icmp6_filt[8];
504 };
505
506 #ifdef _KERNEL
507 #define ICMP6_FILTER_SETPASSALL(filterp) \
508 do { \
509 int i; u_char *p; \
510 p = (u_char *)filterp; \
511 for (i = 0; i < sizeof(struct icmp6_filter); i++) \
512 p[i] = 0xff; \
513 } while (/*CONSTCOND*/ 0)
514 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
515 bzero(filterp, sizeof(struct icmp6_filter))
516 #else /* _KERNEL */
517 #define ICMP6_FILTER_SETPASSALL(filterp) \
518 memset(filterp, 0xff, sizeof(struct icmp6_filter))
519 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
520 memset(filterp, 0x00, sizeof(struct icmp6_filter))
521 #endif /* _KERNEL */
522
523 #define ICMP6_FILTER_SETPASS(type, filterp) \
524 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
525 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
526 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
527 #define ICMP6_FILTER_WILLPASS(type, filterp) \
528 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
529 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
530 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
531
532 /*
533 * Variables related to this implementation
534 * of the internet control message protocol version 6.
535 */
536 struct icmp6errstat {
537 u_quad_t icp6errs_dst_unreach_noroute;
538 u_quad_t icp6errs_dst_unreach_admin;
539 u_quad_t icp6errs_dst_unreach_beyondscope;
540 u_quad_t icp6errs_dst_unreach_addr;
541 u_quad_t icp6errs_dst_unreach_noport;
542 u_quad_t icp6errs_packet_too_big;
543 u_quad_t icp6errs_time_exceed_transit;
544 u_quad_t icp6errs_time_exceed_reassembly;
545 u_quad_t icp6errs_paramprob_header;
546 u_quad_t icp6errs_paramprob_nextheader;
547 u_quad_t icp6errs_paramprob_option;
548 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
549 u_quad_t icp6errs_unknown;
550 };
551
552 struct icmp6stat {
553 /* statistics related to icmp6 packets generated */
554 u_quad_t icp6s_error; /* # of calls to icmp6_error */
555 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */
556 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */
557 u_quad_t icp6s_outhist[256];
558 /* statistics related to input message processed */
559 u_quad_t icp6s_badcode; /* icmp6_code out of range */
560 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
561 u_quad_t icp6s_checksum; /* bad checksum */
562 u_quad_t icp6s_badlen; /* calculated bound mismatch */
563 /*
564 * number of responses: this member is inherited from netinet code, but
565 * for netinet6 code, it is already available in icp6s_outhist[].
566 */
567 u_quad_t icp6s_reflect;
568 u_quad_t icp6s_inhist[256];
569 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */
570 struct icmp6errstat icp6s_outerrhist;
571 #define icp6s_odst_unreach_noroute \
572 icp6s_outerrhist.icp6errs_dst_unreach_noroute
573 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
574 #define icp6s_odst_unreach_beyondscope \
575 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
576 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
577 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
578 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
579 #define icp6s_otime_exceed_transit \
580 icp6s_outerrhist.icp6errs_time_exceed_transit
581 #define icp6s_otime_exceed_reassembly \
582 icp6s_outerrhist.icp6errs_time_exceed_reassembly
583 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
584 #define icp6s_oparamprob_nextheader \
585 icp6s_outerrhist.icp6errs_paramprob_nextheader
586 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
587 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
588 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
589 u_quad_t icp6s_pmtuchg; /* path MTU changes */
590 u_quad_t icp6s_nd_badopt; /* bad ND options */
591 u_quad_t icp6s_badns; /* bad neighbor solicitation */
592 u_quad_t icp6s_badna; /* bad neighbor advertisement */
593 u_quad_t icp6s_badrs; /* bad router advertisement */
594 u_quad_t icp6s_badra; /* bad router advertisement */
595 u_quad_t icp6s_badredirect; /* bad redirect message */
596 };
597
598 /*
599 * Names for ICMP sysctl objects
600 */
601 #define ICMPV6CTL_STATS 1
602 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
603 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
604 #if 0 /*obsoleted*/
605 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
606 #endif
607 #define ICMPV6CTL_ND6_PRUNE 6
608 #define ICMPV6CTL_ND6_DELAY 8
609 #define ICMPV6CTL_ND6_UMAXTRIES 9
610 #define ICMPV6CTL_ND6_MMAXTRIES 10
611 #define ICMPV6CTL_ND6_USELOOPBACK 11
612 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
613 #define ICMPV6CTL_NODEINFO 13
614 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
615 #define ICMPV6CTL_ND6_MAXNUDHINT 15
616 #define ICMPV6CTL_MTUDISC_HIWAT 16
617 #define ICMPV6CTL_MTUDISC_LOWAT 17
618 #define ICMPV6CTL_ND6_DEBUG 18
619 #define ICMPV6CTL_ND6_DRLIST 19
620 #define ICMPV6CTL_ND6_PRLIST 20
621 #define ICMPV6CTL_MAXID 21
622
623 #define RTF_PROBEMTU RTF_PROTO1
624
625 #ifdef _KERNEL
626 # ifdef __STDC__
627 struct rtentry;
628 struct rttimer;
629 struct in6_multi;
630 # endif
631 void icmp6_init(void);
632 void icmp6_paramerror(struct mbuf *, int);
633 void icmp6_error(struct mbuf *, int, int, int);
634 int icmp6_input(struct mbuf **, int *, int);
635 void icmp6_fasttimo(void);
636 void icmp6_reflect(struct mbuf *, size_t);
637 void icmp6_prepare(struct mbuf *);
638 void icmp6_redirect_input(struct mbuf *, int);
639 void icmp6_redirect_output(struct mbuf *, struct rtentry *);
640
641 struct ip6ctlparam;
642 void icmp6_mtudisc_update(struct ip6ctlparam *, int);
643
644 /* XXX: is this the right place for these macros? */
645 #define icmp6_ifstat_inc(ifp, tag) \
646 do { \
647 if (ifp) \
648 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
649 } while (/*CONSTCOND*/ 0)
650
651 #define icmp6_ifoutstat_inc(ifp, type, code) \
652 do { \
653 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
654 if (type < ICMP6_INFOMSG_MASK) \
655 icmp6_ifstat_inc(ifp, ifs6_out_error); \
656 switch (type) { \
657 case ICMP6_DST_UNREACH: \
658 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
659 if (code == ICMP6_DST_UNREACH_ADMIN) \
660 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
661 break; \
662 case ICMP6_PACKET_TOO_BIG: \
663 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
664 break; \
665 case ICMP6_TIME_EXCEEDED: \
666 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
667 break; \
668 case ICMP6_PARAM_PROB: \
669 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
670 break; \
671 case ICMP6_ECHO_REQUEST: \
672 icmp6_ifstat_inc(ifp, ifs6_out_echo); \
673 break; \
674 case ICMP6_ECHO_REPLY: \
675 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
676 break; \
677 case MLD_LISTENER_QUERY: \
678 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
679 break; \
680 case MLD_LISTENER_REPORT: \
681 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
682 break; \
683 case MLD_LISTENER_DONE: \
684 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
685 break; \
686 case ND_ROUTER_SOLICIT: \
687 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
688 break; \
689 case ND_ROUTER_ADVERT: \
690 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
691 break; \
692 case ND_NEIGHBOR_SOLICIT: \
693 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
694 break; \
695 case ND_NEIGHBOR_ADVERT: \
696 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
697 break; \
698 case ND_REDIRECT: \
699 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
700 break; \
701 } \
702 } while (/*CONSTCOND*/ 0)
703
704 extern int icmp6_rediraccept; /* accept/process redirects */
705 extern int icmp6_redirtimeout; /* cache time for redirect routes */
706 #endif /* _KERNEL */
707
708 #endif /* not _NETINET_ICMP6_H_ */
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