1 | /* |
2 | * Copyright (c) 2000-2018 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ |
29 | |
30 | /* |
31 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
32 | * All rights reserved. |
33 | * |
34 | * Redistribution and use in source and binary forms, with or without |
35 | * modification, are permitted provided that the following conditions |
36 | * are met: |
37 | * 1. Redistributions of source code must retain the above copyright |
38 | * notice, this list of conditions and the following disclaimer. |
39 | * 2. Redistributions in binary form must reproduce the above copyright |
40 | * notice, this list of conditions and the following disclaimer in the |
41 | * documentation and/or other materials provided with the distribution. |
42 | * 3. Neither the name of the project nor the names of its contributors |
43 | * may be used to endorse or promote products derived from this software |
44 | * without specific prior written permission. |
45 | * |
46 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
47 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
48 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
49 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
50 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
51 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
52 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
53 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
54 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
55 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
56 | * SUCH DAMAGE. |
57 | */ |
58 | |
59 | /* |
60 | * Copyright (c) 1982, 1986, 1993 |
61 | * The Regents of the University of California. All rights reserved. |
62 | * |
63 | * Redistribution and use in source and binary forms, with or without |
64 | * modification, are permitted provided that the following conditions |
65 | * are met: |
66 | * 1. Redistributions of source code must retain the above copyright |
67 | * notice, this list of conditions and the following disclaimer. |
68 | * 2. Redistributions in binary form must reproduce the above copyright |
69 | * notice, this list of conditions and the following disclaimer in the |
70 | * documentation and/or other materials provided with the distribution. |
71 | * 3. All advertising materials mentioning features or use of this software |
72 | * must display the following acknowledgement: |
73 | * This product includes software developed by the University of |
74 | * California, Berkeley and its contributors. |
75 | * 4. Neither the name of the University nor the names of its contributors |
76 | * may be used to endorse or promote products derived from this software |
77 | * without specific prior written permission. |
78 | * |
79 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
80 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
81 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
82 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
83 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
84 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
85 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
86 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
87 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
88 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
89 | * SUCH DAMAGE. |
90 | * |
91 | * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 |
92 | */ |
93 | |
94 | #ifndef _NETINET_ICMP6_H_ |
95 | #define _NETINET_ICMP6_H_ |
96 | #include <sys/appleapiopts.h> |
97 | |
98 | #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) |
99 | - sizeof(struct icmp6_hdr) */ |
100 | |
101 | struct icmp6_hdr { |
102 | u_int8_t icmp6_type; /* type field */ |
103 | u_int8_t icmp6_code; /* code field */ |
104 | u_int16_t icmp6_cksum; /* checksum field */ |
105 | union { |
106 | u_int32_t icmp6_un_data32[1]; /* type-specific field */ |
107 | u_int16_t icmp6_un_data16[2]; /* type-specific field */ |
108 | u_int8_t icmp6_un_data8[4]; /* type-specific field */ |
109 | } icmp6_dataun; |
110 | } __attribute__((__packed__)); |
111 | |
112 | #define icmp6_data32 icmp6_dataun.icmp6_un_data32 |
113 | #define icmp6_data16 icmp6_dataun.icmp6_un_data16 |
114 | #define icmp6_data8 icmp6_dataun.icmp6_un_data8 |
115 | #define icmp6_pptr icmp6_data32[0] /* parameter prob */ |
116 | #define icmp6_mtu icmp6_data32[0] /* packet too big */ |
117 | #define icmp6_id icmp6_data16[0] /* echo request/reply */ |
118 | #define icmp6_seq icmp6_data16[1] /* echo request/reply */ |
119 | #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ |
120 | |
121 | #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ |
122 | #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ |
123 | #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ |
124 | #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ |
125 | |
126 | #define ICMP6_ECHO_REQUEST 128 /* echo service */ |
127 | #define ICMP6_ECHO_REPLY 129 /* echo reply */ |
128 | #define MLD_LISTENER_QUERY 130 /* multicast listener query */ |
129 | #define MLD_LISTENER_REPORT 131 /* multicast listener report */ |
130 | #define MLD_LISTENER_DONE 132 /* multicast listener done */ |
131 | #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */ |
132 | |
133 | /* RFC2292 decls */ |
134 | #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ |
135 | #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ |
136 | #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ |
137 | |
138 | #ifndef KERNEL |
139 | /* the followings are for backward compatibility to old KAME apps. */ |
140 | #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY |
141 | #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT |
142 | #define MLD6_LISTENER_DONE MLD_LISTENER_DONE |
143 | #endif |
144 | |
145 | #define ND_ROUTER_SOLICIT 133 /* router solicitation */ |
146 | #define ND_ROUTER_ADVERT 134 /* router advertisement */ |
147 | #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ |
148 | #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */ |
149 | #define ND_REDIRECT 137 /* redirect */ |
150 | |
151 | #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ |
152 | |
153 | #define ICMP6_WRUREQUEST 139 /* who are you request */ |
154 | #define ICMP6_WRUREPLY 140 /* who are you reply */ |
155 | #define ICMP6_FQDN_QUERY 139 /* FQDN query */ |
156 | #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ |
157 | #define ICMP6_NI_QUERY 139 /* node information request */ |
158 | #define ICMP6_NI_REPLY 140 /* node information reply */ |
159 | #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */ |
160 | |
161 | /* The definitions below are experimental. TBA */ |
162 | #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ |
163 | #define MLD_MTRACE 201 /* mtrace messages */ |
164 | |
165 | #ifndef KERNEL |
166 | #define MLD6_MTRACE_RESP MLD_MTRACE_RESP |
167 | #define MLD6_MTRACE MLD_MTRACE |
168 | #endif |
169 | |
170 | #define ICMP6_MAXTYPE 201 |
171 | |
172 | #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ |
173 | #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ |
174 | #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ |
175 | #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ |
176 | #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ |
177 | #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ |
178 | |
179 | #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ |
180 | #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ |
181 | |
182 | #define 0 /* erroneous header field */ |
183 | #define 1 /* unrecognized next header */ |
184 | #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ |
185 | |
186 | #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ |
187 | |
188 | #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ |
189 | #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ |
190 | #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ |
191 | |
192 | #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ |
193 | #define ICMP6_NI_REFUSED 1 /* node information request is refused */ |
194 | #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ |
195 | |
196 | #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ |
197 | #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ |
198 | #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ |
199 | |
200 | /* Used in kernel only */ |
201 | #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ |
202 | #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ |
203 | |
204 | /* |
205 | * Multicast Listener Discovery |
206 | */ |
207 | struct mld_hdr { |
208 | struct icmp6_hdr mld_icmp6_hdr; |
209 | struct in6_addr mld_addr; /* multicast address */ |
210 | } __attribute__((__packed__)); |
211 | |
212 | /* definitions to provide backward compatibility to old KAME applications */ |
213 | #ifndef KERNEL |
214 | #define mld6_hdr mld_hdr |
215 | #define mld6_type mld_type |
216 | #define mld6_code mld_code |
217 | #define mld6_cksum mld_cksum |
218 | #define mld6_maxdelay mld_maxdelay |
219 | #define mld6_reserved mld_reserved |
220 | #define mld6_addr mld_addr |
221 | #endif |
222 | |
223 | /* shortcut macro definitions */ |
224 | #define mld_type mld_icmp6_hdr.icmp6_type |
225 | #define mld_code mld_icmp6_hdr.icmp6_code |
226 | #define mld_cksum mld_icmp6_hdr.icmp6_cksum |
227 | #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] |
228 | #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] |
229 | #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0] |
230 | #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1] |
231 | |
232 | |
233 | #define ICMP6_ERRORTYPE(type) \ |
234 | ((type) == ICMP6_DST_UNREACH || (type) == ICMP6_PACKET_TOO_BIG || \ |
235 | (type) == ICMP6_TIME_EXCEEDED || (type) == ICMP6_PARAM_PROB) |
236 | /* |
237 | * Neighbor Discovery |
238 | */ |
239 | |
240 | struct nd_router_solicit { /* router solicitation */ |
241 | struct icmp6_hdr nd_rs_hdr; |
242 | /* could be followed by options */ |
243 | }__attribute__((__packed__)); |
244 | |
245 | #define nd_rs_type nd_rs_hdr.icmp6_type |
246 | #define nd_rs_code nd_rs_hdr.icmp6_code |
247 | #define nd_rs_cksum nd_rs_hdr.icmp6_cksum |
248 | #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] |
249 | |
250 | struct nd_router_advert { /* router advertisement */ |
251 | struct icmp6_hdr nd_ra_hdr; |
252 | u_int32_t nd_ra_reachable; /* reachable time */ |
253 | u_int32_t nd_ra_retransmit; /* retransmit timer */ |
254 | /* could be followed by options */ |
255 | } __attribute__((__packed__)); |
256 | |
257 | #define nd_ra_type nd_ra_hdr.icmp6_type |
258 | #define nd_ra_code nd_ra_hdr.icmp6_code |
259 | #define nd_ra_cksum nd_ra_hdr.icmp6_cksum |
260 | #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] |
261 | #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] |
262 | #define ND_RA_FLAG_MANAGED 0x80 |
263 | #define ND_RA_FLAG_OTHER 0x40 |
264 | #define ND_RA_FLAG_HA 0x20 |
265 | |
266 | /* |
267 | * Router preference values based on draft-draves-ipngwg-router-selection-01. |
268 | * These are non-standard definitions. |
269 | */ |
270 | #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ |
271 | |
272 | #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ |
273 | #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ |
274 | #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ |
275 | #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ |
276 | |
277 | #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] |
278 | |
279 | struct nd_neighbor_solicit { /* neighbor solicitation */ |
280 | struct icmp6_hdr nd_ns_hdr; |
281 | struct in6_addr nd_ns_target; /*target address */ |
282 | /* could be followed by options */ |
283 | }__attribute__((__packed__)); |
284 | |
285 | #define nd_ns_type nd_ns_hdr.icmp6_type |
286 | #define nd_ns_code nd_ns_hdr.icmp6_code |
287 | #define nd_ns_cksum nd_ns_hdr.icmp6_cksum |
288 | #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] |
289 | |
290 | struct nd_neighbor_advert { /* neighbor advertisement */ |
291 | struct icmp6_hdr nd_na_hdr; |
292 | struct in6_addr nd_na_target; /* target address */ |
293 | /* could be followed by options */ |
294 | }__attribute__((__packed__)); |
295 | |
296 | #define nd_na_type nd_na_hdr.icmp6_type |
297 | #define nd_na_code nd_na_hdr.icmp6_code |
298 | #define nd_na_cksum nd_na_hdr.icmp6_cksum |
299 | #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] |
300 | #if BYTE_ORDER == BIG_ENDIAN |
301 | #define ND_NA_FLAG_ROUTER 0x80000000 |
302 | #define ND_NA_FLAG_SOLICITED 0x40000000 |
303 | #define ND_NA_FLAG_OVERRIDE 0x20000000 |
304 | #else |
305 | #if BYTE_ORDER == LITTLE_ENDIAN |
306 | #define ND_NA_FLAG_ROUTER 0x80 |
307 | #define ND_NA_FLAG_SOLICITED 0x40 |
308 | #define ND_NA_FLAG_OVERRIDE 0x20 |
309 | #endif |
310 | #endif |
311 | |
312 | struct nd_redirect { /* redirect */ |
313 | struct icmp6_hdr nd_rd_hdr; |
314 | struct in6_addr nd_rd_target; /* target address */ |
315 | struct in6_addr nd_rd_dst; /* destination address */ |
316 | /* could be followed by options */ |
317 | }__attribute__((__packed__)); |
318 | |
319 | #define nd_rd_type nd_rd_hdr.icmp6_type |
320 | #define nd_rd_code nd_rd_hdr.icmp6_code |
321 | #define nd_rd_cksum nd_rd_hdr.icmp6_cksum |
322 | #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] |
323 | |
324 | struct nd_opt_hdr { /* Neighbor discovery option header */ |
325 | u_int8_t nd_opt_type; |
326 | u_int8_t nd_opt_len; |
327 | /* followed by option specific data*/ |
328 | }__attribute__((__packed__)); |
329 | |
330 | #define ND_OPT_SOURCE_LINKADDR 1 |
331 | #define ND_OPT_TARGET_LINKADDR 2 |
332 | #define ND_OPT_PREFIX_INFORMATION 3 |
333 | #define 4 |
334 | #define ND_OPT_MTU 5 |
335 | #define ND_OPT_NONCE 14 /* RFC 3971 */ |
336 | #define ND_OPT_RDNSS 25 /* RFC 6106 */ |
337 | #define ND_OPT_DNSSL 31 /* RFC 6106 */ |
338 | |
339 | #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ |
340 | |
341 | struct nd_opt_prefix_info { /* prefix information */ |
342 | u_int8_t nd_opt_pi_type; |
343 | u_int8_t nd_opt_pi_len; |
344 | u_int8_t nd_opt_pi_prefix_len; |
345 | u_int8_t nd_opt_pi_flags_reserved; |
346 | u_int32_t nd_opt_pi_valid_time; |
347 | u_int32_t nd_opt_pi_preferred_time; |
348 | u_int32_t nd_opt_pi_reserved2; |
349 | struct in6_addr nd_opt_pi_prefix; |
350 | }__attribute__((__packed__)); |
351 | |
352 | #define ND_OPT_PI_FLAG_ONLINK 0x80 |
353 | #define ND_OPT_PI_FLAG_AUTO 0x40 |
354 | |
355 | #define ND_OPT_NONCE_LEN ((1 * 8) - 2) |
356 | #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0 |
357 | #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8." |
358 | #endif |
359 | |
360 | struct nd_opt_nonce { /* nonce option */ |
361 | u_int8_t nd_opt_nonce_type; |
362 | u_int8_t nd_opt_nonce_len; |
363 | u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN]; |
364 | } __attribute__((__packed__)); |
365 | |
366 | struct nd_opt_rd_hdr { /* redirected header */ |
367 | u_int8_t nd_opt_rh_type; |
368 | u_int8_t nd_opt_rh_len; |
369 | u_int16_t nd_opt_rh_reserved1; |
370 | u_int32_t nd_opt_rh_reserved2; |
371 | /* followed by IP header and data */ |
372 | } __attribute__((__packed__)); |
373 | |
374 | struct nd_opt_mtu { /* MTU option */ |
375 | u_int8_t nd_opt_mtu_type; |
376 | u_int8_t nd_opt_mtu_len; |
377 | u_int16_t nd_opt_mtu_reserved; |
378 | u_int32_t nd_opt_mtu_mtu; |
379 | }__attribute__((__packed__)); |
380 | |
381 | struct nd_opt_route_info { /* route info */ |
382 | u_int8_t nd_opt_rti_type; |
383 | u_int8_t nd_opt_rti_len; |
384 | u_int8_t nd_opt_rti_prefixlen; |
385 | u_int8_t nd_opt_rti_flags; |
386 | u_int32_t nd_opt_rti_lifetime; |
387 | /* prefix follows */ |
388 | }__attribute__((__packed__)); |
389 | |
390 | struct nd_opt_rdnss { /* recursive domain name system servers */ |
391 | u_int8_t nd_opt_rdnss_type; |
392 | u_int8_t nd_opt_rdnss_len; |
393 | u_int16_t nd_opt_rdnss_reserved; |
394 | u_int32_t nd_opt_rdnss_lifetime; |
395 | struct in6_addr nd_opt_rdnss_addr[1]; |
396 | } __attribute__((__packed__)); |
397 | |
398 | struct nd_opt_dnssl { /* domain name search list */ |
399 | u_int8_t nd_opt_dnssl_type; |
400 | u_int8_t nd_opt_dnssl_len; |
401 | u_int16_t nd_opt_dnssl_reserved; |
402 | u_int32_t nd_opt_dnssl_lifetime; |
403 | u_int8_t nd_opt_dnssl_domains[8]; |
404 | } __attribute__((__packed__)); |
405 | |
406 | /* |
407 | * icmp6 namelookup |
408 | */ |
409 | |
410 | struct icmp6_namelookup { |
411 | struct icmp6_hdr icmp6_nl_hdr; |
412 | u_int8_t icmp6_nl_nonce[8]; |
413 | int32_t icmp6_nl_ttl; |
414 | #if 0 |
415 | u_int8_t icmp6_nl_len; |
416 | u_int8_t icmp6_nl_name[3]; |
417 | #endif |
418 | /* could be followed by options */ |
419 | }__attribute__((__packed__)); |
420 | |
421 | /* |
422 | * icmp6 node information |
423 | */ |
424 | struct icmp6_nodeinfo { |
425 | struct icmp6_hdr icmp6_ni_hdr; |
426 | u_int8_t icmp6_ni_nonce[8]; |
427 | /* could be followed by reply data */ |
428 | }__attribute__((__packed__)); |
429 | |
430 | #define ni_type icmp6_ni_hdr.icmp6_type |
431 | #define ni_code icmp6_ni_hdr.icmp6_code |
432 | #define ni_cksum icmp6_ni_hdr.icmp6_cksum |
433 | #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] |
434 | #define ni_flags icmp6_ni_hdr.icmp6_data16[1] |
435 | |
436 | #define NI_QTYPE_NOOP 0 /* NOOP */ |
437 | #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ |
438 | #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ |
439 | #define NI_QTYPE_DNSNAME 2 /* DNS Name */ |
440 | #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ |
441 | #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ |
442 | |
443 | #if BYTE_ORDER == BIG_ENDIAN |
444 | #define NI_SUPTYPE_FLAG_COMPRESS 0x1 |
445 | #define NI_FQDN_FLAG_VALIDTTL 0x1 |
446 | #elif BYTE_ORDER == LITTLE_ENDIAN |
447 | #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 |
448 | #define NI_FQDN_FLAG_VALIDTTL 0x0100 |
449 | #endif |
450 | |
451 | #ifdef NAME_LOOKUPS_04 |
452 | #if BYTE_ORDER == BIG_ENDIAN |
453 | #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 |
454 | #define NI_NODEADDR_FLAG_SITELOCAL 0x2 |
455 | #define NI_NODEADDR_FLAG_GLOBAL 0x4 |
456 | #define NI_NODEADDR_FLAG_ALL 0x8 |
457 | #define NI_NODEADDR_FLAG_TRUNCATE 0x10 |
458 | #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ |
459 | #elif BYTE_ORDER == LITTLE_ENDIAN |
460 | #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 |
461 | #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 |
462 | #define NI_NODEADDR_FLAG_GLOBAL 0x0400 |
463 | #define NI_NODEADDR_FLAG_ALL 0x0800 |
464 | #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 |
465 | #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ |
466 | #endif |
467 | #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ |
468 | #if BYTE_ORDER == BIG_ENDIAN |
469 | #define NI_NODEADDR_FLAG_TRUNCATE 0x1 |
470 | #define NI_NODEADDR_FLAG_ALL 0x2 |
471 | #define NI_NODEADDR_FLAG_COMPAT 0x4 |
472 | #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 |
473 | #define NI_NODEADDR_FLAG_SITELOCAL 0x10 |
474 | #define NI_NODEADDR_FLAG_GLOBAL 0x20 |
475 | #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ |
476 | #elif BYTE_ORDER == LITTLE_ENDIAN |
477 | #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 |
478 | #define NI_NODEADDR_FLAG_ALL 0x0200 |
479 | #define NI_NODEADDR_FLAG_COMPAT 0x0400 |
480 | #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 |
481 | #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 |
482 | #define NI_NODEADDR_FLAG_GLOBAL 0x2000 |
483 | #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ |
484 | #endif |
485 | #endif |
486 | |
487 | struct ni_reply_fqdn { |
488 | u_int32_t ni_fqdn_ttl; /* TTL */ |
489 | u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ |
490 | u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ |
491 | }__attribute__((__packed__)); |
492 | |
493 | /* |
494 | * Router Renumbering. as router-renum-08.txt |
495 | */ |
496 | struct icmp6_router_renum { /* router renumbering header */ |
497 | struct icmp6_hdr rr_hdr; |
498 | u_int8_t rr_segnum; |
499 | u_int8_t rr_flags; |
500 | u_int16_t rr_maxdelay; |
501 | u_int32_t rr_reserved; |
502 | } __attribute__((__packed__)); |
503 | |
504 | #define ICMP6_RR_FLAGS_TEST 0x80 |
505 | #define ICMP6_RR_FLAGS_REQRESULT 0x40 |
506 | #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 |
507 | #define ICMP6_RR_FLAGS_SPECSITE 0x10 |
508 | #define ICMP6_RR_FLAGS_PREVDONE 0x08 |
509 | |
510 | #define rr_type rr_hdr.icmp6_type |
511 | #define rr_code rr_hdr.icmp6_code |
512 | #define rr_cksum rr_hdr.icmp6_cksum |
513 | #define rr_seqnum rr_hdr.icmp6_data32[0] |
514 | |
515 | struct rr_pco_match { /* match prefix part */ |
516 | u_int8_t rpm_code; |
517 | u_int8_t rpm_len; |
518 | u_int8_t rpm_ordinal; |
519 | u_int8_t rpm_matchlen; |
520 | u_int8_t rpm_minlen; |
521 | u_int8_t rpm_maxlen; |
522 | u_int16_t rpm_reserved; |
523 | struct in6_addr rpm_prefix; |
524 | } __attribute__((__packed__)); |
525 | |
526 | #define RPM_PCO_ADD 1 |
527 | #define RPM_PCO_CHANGE 2 |
528 | #define RPM_PCO_SETGLOBAL 3 |
529 | #define RPM_PCO_MAX 4 |
530 | |
531 | struct rr_pco_use { /* use prefix part */ |
532 | u_int8_t rpu_uselen; |
533 | u_int8_t rpu_keeplen; |
534 | u_int8_t rpu_ramask; |
535 | u_int8_t rpu_raflags; |
536 | u_int32_t rpu_vltime; |
537 | u_int32_t rpu_pltime; |
538 | u_int32_t rpu_flags; |
539 | struct in6_addr rpu_prefix; |
540 | } __attribute__((__packed__)); |
541 | #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 |
542 | #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 |
543 | |
544 | #if BYTE_ORDER == BIG_ENDIAN |
545 | #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 |
546 | #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 |
547 | #elif BYTE_ORDER == LITTLE_ENDIAN |
548 | #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 |
549 | #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 |
550 | #endif |
551 | |
552 | struct rr_result { /* router renumbering result message */ |
553 | u_int16_t rrr_flags; |
554 | u_int8_t rrr_ordinal; |
555 | u_int8_t rrr_matchedlen; |
556 | u_int32_t rrr_ifid; |
557 | struct in6_addr rrr_prefix; |
558 | } __attribute__((__packed__)); |
559 | #if BYTE_ORDER == BIG_ENDIAN |
560 | #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 |
561 | #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 |
562 | #elif BYTE_ORDER == LITTLE_ENDIAN |
563 | #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 |
564 | #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 |
565 | #endif |
566 | |
567 | /* |
568 | * icmp6 filter structures. |
569 | */ |
570 | |
571 | struct icmp6_filter { |
572 | u_int32_t icmp6_filt[8]; |
573 | }; |
574 | |
575 | #ifdef KERNEL |
576 | #define ICMP6_FILTER_SETPASSALL(filterp) \ |
577 | do { \ |
578 | int i; u_char *ptr; \ |
579 | ptr = (u_char *)filterp; \ |
580 | for (i = 0; i < sizeof(struct icmp6_filter); i++) \ |
581 | ptr[i] = 0xff; \ |
582 | } while (0) |
583 | #define ICMP6_FILTER_SETBLOCKALL(filterp) \ |
584 | bzero(filterp, sizeof(struct icmp6_filter)) |
585 | #else /* KERNEL */ |
586 | #define ICMP6_FILTER_SETPASSALL(filterp) \ |
587 | memset(filterp, 0xff, sizeof(struct icmp6_filter)) |
588 | #define ICMP6_FILTER_SETBLOCKALL(filterp) \ |
589 | memset(filterp, 0x00, sizeof(struct icmp6_filter)) |
590 | #endif /* KERNEL */ |
591 | |
592 | #define ICMP6_FILTER_SETPASS(type, filterp) \ |
593 | (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) |
594 | #define ICMP6_FILTER_SETBLOCK(type, filterp) \ |
595 | (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) |
596 | #define ICMP6_FILTER_WILLPASS(type, filterp) \ |
597 | ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) |
598 | #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ |
599 | ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) |
600 | |
601 | /* |
602 | * Variables related to this implementation |
603 | * of the internet control message protocol version 6. |
604 | */ |
605 | struct icmp6errstat { |
606 | u_quad_t icp6errs_dst_unreach_noroute; |
607 | u_quad_t icp6errs_dst_unreach_admin; |
608 | u_quad_t icp6errs_dst_unreach_beyondscope; |
609 | u_quad_t icp6errs_dst_unreach_addr; |
610 | u_quad_t icp6errs_dst_unreach_noport; |
611 | u_quad_t icp6errs_packet_too_big; |
612 | u_quad_t icp6errs_time_exceed_transit; |
613 | u_quad_t icp6errs_time_exceed_reassembly; |
614 | u_quad_t ; |
615 | u_quad_t ; |
616 | u_quad_t icp6errs_paramprob_option; |
617 | u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ |
618 | u_quad_t icp6errs_unknown; |
619 | }; |
620 | |
621 | struct icmp6stat { |
622 | /* statistics related to icmp6 packets generated */ |
623 | u_quad_t icp6s_error; /* # of calls to icmp6_error */ |
624 | u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ |
625 | u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ |
626 | u_quad_t icp6s_outhist[256]; |
627 | /* statistics related to input message processed */ |
628 | u_quad_t icp6s_badcode; /* icmp6_code out of range */ |
629 | u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ |
630 | u_quad_t icp6s_checksum; /* bad checksum */ |
631 | u_quad_t icp6s_badlen; /* calculated bound mismatch */ |
632 | u_quad_t icp6s_reflect; /* number of responses */ |
633 | u_quad_t icp6s_inhist[256]; |
634 | u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ |
635 | struct icmp6errstat icp6s_outerrhist; |
636 | #define icp6s_odst_unreach_noroute \ |
637 | icp6s_outerrhist.icp6errs_dst_unreach_noroute |
638 | #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin |
639 | #define icp6s_odst_unreach_beyondscope \ |
640 | icp6s_outerrhist.icp6errs_dst_unreach_beyondscope |
641 | #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr |
642 | #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport |
643 | #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big |
644 | #define icp6s_otime_exceed_transit \ |
645 | icp6s_outerrhist.icp6errs_time_exceed_transit |
646 | #define icp6s_otime_exceed_reassembly \ |
647 | icp6s_outerrhist.icp6errs_time_exceed_reassembly |
648 | #define icp6s_outerrhist.icp6errs_paramprob_header |
649 | #define \ |
650 | icp6s_outerrhist.icp6errs_paramprob_nextheader |
651 | #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option |
652 | #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect |
653 | #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown |
654 | u_quad_t icp6s_pmtuchg; /* path MTU changes */ |
655 | u_quad_t icp6s_nd_badopt; /* bad ND options */ |
656 | u_quad_t icp6s_badns; /* bad neighbor solicitation */ |
657 | u_quad_t icp6s_badna; /* bad neighbor advertisement */ |
658 | u_quad_t icp6s_badrs; /* bad router advertisement */ |
659 | u_quad_t icp6s_badra; /* bad router advertisement */ |
660 | u_quad_t icp6s_badredirect; /* bad redirect message */ |
661 | u_quad_t icp6s_rfc6980_drop; /* NDP packet dropped based on RFC 6980 */ |
662 | }; |
663 | |
664 | /* |
665 | * Names for ICMP sysctl objects |
666 | */ |
667 | #define ICMPV6CTL_STATS 1 |
668 | #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ |
669 | #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ |
670 | #if 0 /*obsoleted*/ |
671 | #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ |
672 | #endif |
673 | #define ICMPV6CTL_ND6_PRUNE 6 |
674 | #define ICMPV6CTL_ND6_DELAY 8 |
675 | #define ICMPV6CTL_ND6_UMAXTRIES 9 |
676 | #define ICMPV6CTL_ND6_MMAXTRIES 10 |
677 | #define ICMPV6CTL_ND6_USELOOPBACK 11 |
678 | /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ |
679 | #define ICMPV6CTL_NODEINFO 13 |
680 | #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ |
681 | #define ICMPV6CTL_ND6_MAXNUDHINT 15 |
682 | #define ICMPV6CTL_MTUDISC_HIWAT 16 |
683 | #define ICMPV6CTL_MTUDISC_LOWAT 17 |
684 | #define ICMPV6CTL_ND6_DEBUG 18 |
685 | #define ICMPV6CTL_ND6_DRLIST 19 |
686 | #define ICMPV6CTL_ND6_PRLIST 20 |
687 | #define ICMPV6CTL_MLD_MAXSRCFILTER 21 |
688 | #define ICMPV6CTL_MLD_SOMAXSRC 22 |
689 | #define ICMPV6CTL_MLD_VERSION 23 |
690 | #define ICMPV6CTL_ND6_MAXQLEN 24 |
691 | #define ICMPV6CTL_ND6_ACCEPT_6TO4 25 |
692 | #define ICMPV6CTL_ND6_OPTIMISTIC_DAD 26 /* RFC 4429 */ |
693 | #define ICMPV6CTL_MAXID 27 |
694 | |
695 | #ifdef BSD_KERNEL_PRIVATE |
696 | #define ICMPV6CTL_NAMES { \ |
697 | { 0, 0 }, \ |
698 | { 0, 0 }, \ |
699 | { "rediraccept", CTLTYPE_INT }, \ |
700 | { "redirtimeout", CTLTYPE_INT }, \ |
701 | { 0, 0 }, \ |
702 | { 0, 0 }, \ |
703 | { "nd6_prune", CTLTYPE_INT }, \ |
704 | { 0, 0 }, \ |
705 | { "nd6_delay", CTLTYPE_INT }, \ |
706 | { "nd6_umaxtries", CTLTYPE_INT }, \ |
707 | { "nd6_mmaxtries", CTLTYPE_INT }, \ |
708 | { "nd6_useloopback", CTLTYPE_INT }, \ |
709 | { 0, 0 }, \ |
710 | { "nodeinfo", CTLTYPE_INT }, \ |
711 | { "errppslimit", CTLTYPE_INT }, \ |
712 | { "nd6_maxnudhint", CTLTYPE_INT }, \ |
713 | { "mtudisc_hiwat", CTLTYPE_INT }, \ |
714 | { "mtudisc_lowat", CTLTYPE_INT }, \ |
715 | { "nd6_debug", CTLTYPE_INT }, \ |
716 | { 0, 0 }, \ |
717 | { 0, 0 }, \ |
718 | { 0, 0 }, \ |
719 | { 0, 0 }, \ |
720 | { 0, 0 }, \ |
721 | { 0, 0 }, \ |
722 | { "nd6_accept_6to4", CTLTYPE_INT }, \ |
723 | { "nd6_optimistic_dad", CTLTYPE_INT }, \ |
724 | } |
725 | |
726 | # ifdef __STDC__ |
727 | struct rtentry; |
728 | struct rttimer; |
729 | struct in6_multi; |
730 | # endif |
731 | struct ip6protosw; |
732 | void icmp6_init(struct ip6protosw *, struct domain *); |
733 | void icmp6_paramerror(struct mbuf *, int); |
734 | |
735 | void icmp6_error_flag(struct mbuf *, int, int, int, int); |
736 | #define ICMP6_ERROR_RST_MRCVIF 0x1 |
737 | |
738 | void icmp6_error(struct mbuf *, int, int, int); |
739 | void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *); |
740 | int icmp6_input(struct mbuf **, int *, int); |
741 | void icmp6_reflect(struct mbuf *, size_t); |
742 | void icmp6_prepare(struct mbuf *); |
743 | void icmp6_redirect_input(struct mbuf *, int); |
744 | void icmp6_redirect_output(struct mbuf *, struct rtentry *); |
745 | |
746 | struct ip6ctlparam; |
747 | void icmp6_mtudisc_update(struct ip6ctlparam *, int); |
748 | |
749 | extern lck_rw_t icmp6_ifs_rwlock; |
750 | /* XXX: is this the right place for these macros? */ |
751 | /* N.B.: if_inet6data is never freed once set, so we don't need to lock */ |
752 | #define icmp6_ifstat_inc(_ifp, _tag) do { \ |
753 | if (_ifp != NULL && IN6_IFEXTRA(_ifp) != NULL) { \ |
754 | IN6_IFEXTRA(_ifp)->icmp6_ifstat._tag++; \ |
755 | } \ |
756 | } while (0) |
757 | |
758 | #define icmp6_ifoutstat_inc(ifp, type, code) do { \ |
759 | icmp6_ifstat_inc(ifp, ifs6_out_msg); \ |
760 | if (type < ICMP6_INFOMSG_MASK) \ |
761 | icmp6_ifstat_inc(ifp, ifs6_out_error); \ |
762 | switch (type) { \ |
763 | case ICMP6_DST_UNREACH: \ |
764 | icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ |
765 | if (code == ICMP6_DST_UNREACH_ADMIN) \ |
766 | icmp6_ifstat_inc(ifp, ifs6_out_adminprohib);\ |
767 | break; \ |
768 | case ICMP6_PACKET_TOO_BIG: \ |
769 | icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ |
770 | break; \ |
771 | case ICMP6_TIME_EXCEEDED: \ |
772 | icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ |
773 | break; \ |
774 | case ICMP6_PARAM_PROB: \ |
775 | icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ |
776 | break; \ |
777 | case ICMP6_ECHO_REQUEST: \ |
778 | icmp6_ifstat_inc(ifp, ifs6_out_echo); \ |
779 | break; \ |
780 | case ICMP6_ECHO_REPLY: \ |
781 | icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ |
782 | break; \ |
783 | case MLD_LISTENER_QUERY: \ |
784 | icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ |
785 | break; \ |
786 | case MLD_LISTENER_REPORT: \ |
787 | icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ |
788 | break; \ |
789 | case MLD_LISTENER_DONE: \ |
790 | icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ |
791 | break; \ |
792 | case ND_ROUTER_SOLICIT: \ |
793 | icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ |
794 | break; \ |
795 | case ND_ROUTER_ADVERT: \ |
796 | icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ |
797 | break; \ |
798 | case ND_NEIGHBOR_SOLICIT: \ |
799 | icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit);\ |
800 | break; \ |
801 | case ND_NEIGHBOR_ADVERT: \ |
802 | icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ |
803 | break; \ |
804 | case ND_REDIRECT: \ |
805 | icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ |
806 | break; \ |
807 | } \ |
808 | } while (0) |
809 | |
810 | extern int icmp6_rediraccept; /* accept/process redirects */ |
811 | extern int icmp6_redirtimeout; /* cache time for redirect routes */ |
812 | |
813 | #define ICMP6_NODEINFO_FQDNOK 0x1 |
814 | #define ICMP6_NODEINFO_NODEADDROK 0x2 |
815 | #define ICMP6_NODEINFO_TMPADDROK 0x4 |
816 | #define ICMP6_NODEINFO_GLOBALOK 0x8 |
817 | |
818 | #endif /* BSD_KERNEL_PRIVATE */ |
819 | |
820 | #endif /* !_NETINET_ICMP6_H_ */ |
821 | |