Annotation of sys/netinet/icmp6.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: icmp6.h,v 1.32 2006/07/06 02:56:58 brad Exp $ */
2: /* $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 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: * 3. 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 advertisement */
115: #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
116: #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
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 response(to sender) */
130: #define MLD_MTRACE 201 /* mtrace messages */
131:
132: #ifndef _KERNEL
133: /* the followings are for backward compatibility to old KAME apps. */
134: #define MLD6_MTRACE_RESP MLD_MTRACE_RESP
135: #define MLD6_MTRACE MLD_MTRACE
136: #endif
137:
138: #define ICMP6_MAXTYPE 201
139:
140: #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
141: #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
142: #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
143: #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
144: #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
145: #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
146:
147: #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
148: #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
149:
150: #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
151: #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
152: #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
153:
154: #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
155:
156: #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
157: #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
158: #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
159:
160: #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
161: #define ICMP6_NI_REFUSED 1 /* node information request is refused */
162: #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
163:
164: #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
165: #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
166: #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
167:
168: /* Used in kernel only */
169: #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
170: #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
171:
172: /*
173: * Multicast Listener Discovery
174: */
175: struct mld_hdr {
176: struct icmp6_hdr mld_icmp6_hdr;
177: struct in6_addr mld_addr; /* multicast address */
178: } __packed;
179:
180: /* definitions to provide backward compatibility to old KAME applications */
181: #ifndef _KERNEL
182: #define mld6_hdr mld_hdr
183: #define mld6_type mld_type
184: #define mld6_code mld_code
185: #define mld6_cksum mld_cksum
186: #define mld6_maxdelay mld_maxdelay
187: #define mld6_reserved mld_reserved
188: #define mld6_addr mld_addr
189: #endif
190:
191: /* shortcut macro definitions */
192: #define mld_type mld_icmp6_hdr.icmp6_type
193: #define mld_code mld_icmp6_hdr.icmp6_code
194: #define mld_cksum mld_icmp6_hdr.icmp6_cksum
195: #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
196: #define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
197:
198: /*
199: * Neighbor Discovery
200: */
201:
202: struct nd_router_solicit { /* router solicitation */
203: struct icmp6_hdr nd_rs_hdr;
204: /* could be followed by options */
205: } __packed;
206:
207: #define nd_rs_type nd_rs_hdr.icmp6_type
208: #define nd_rs_code nd_rs_hdr.icmp6_code
209: #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
210: #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
211:
212: struct nd_router_advert { /* router advertisement */
213: struct icmp6_hdr nd_ra_hdr;
214: u_int32_t nd_ra_reachable; /* reachable time */
215: u_int32_t nd_ra_retransmit; /* retransmit timer */
216: /* could be followed by options */
217: } __packed;
218:
219: #define nd_ra_type nd_ra_hdr.icmp6_type
220: #define nd_ra_code nd_ra_hdr.icmp6_code
221: #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
222: #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
223: #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
224: #define ND_RA_FLAG_MANAGED 0x80
225: #define ND_RA_FLAG_OTHER 0x40
226: #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
227:
228: struct nd_neighbor_solicit { /* neighbor solicitation */
229: struct icmp6_hdr nd_ns_hdr;
230: struct in6_addr nd_ns_target; /*target address */
231: /* could be followed by options */
232: } __packed;
233:
234: #define nd_ns_type nd_ns_hdr.icmp6_type
235: #define nd_ns_code nd_ns_hdr.icmp6_code
236: #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
237: #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
238:
239: struct nd_neighbor_advert { /* neighbor advertisement */
240: struct icmp6_hdr nd_na_hdr;
241: struct in6_addr nd_na_target; /* target address */
242: /* could be followed by options */
243: } __packed;
244:
245: #define nd_na_type nd_na_hdr.icmp6_type
246: #define nd_na_code nd_na_hdr.icmp6_code
247: #define nd_na_cksum nd_na_hdr.icmp6_cksum
248: #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
249: #if _BYTE_ORDER == _BIG_ENDIAN
250: #define ND_NA_FLAG_ROUTER 0x80000000
251: #define ND_NA_FLAG_SOLICITED 0x40000000
252: #define ND_NA_FLAG_OVERRIDE 0x20000000
253: #else
254: #if _BYTE_ORDER == _LITTLE_ENDIAN
255: #define ND_NA_FLAG_ROUTER 0x80
256: #define ND_NA_FLAG_SOLICITED 0x40
257: #define ND_NA_FLAG_OVERRIDE 0x20
258: #endif
259: #endif
260:
261: struct nd_redirect { /* redirect */
262: struct icmp6_hdr nd_rd_hdr;
263: struct in6_addr nd_rd_target; /* target address */
264: struct in6_addr nd_rd_dst; /* destination address */
265: /* could be followed by options */
266: } __packed;
267:
268: #define nd_rd_type nd_rd_hdr.icmp6_type
269: #define nd_rd_code nd_rd_hdr.icmp6_code
270: #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
271: #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
272:
273: struct nd_opt_hdr { /* Neighbor discovery option header */
274: u_int8_t nd_opt_type;
275: u_int8_t nd_opt_len;
276: /* followed by option specific data*/
277: } __packed;
278:
279: #define ND_OPT_SOURCE_LINKADDR 1
280: #define ND_OPT_TARGET_LINKADDR 2
281: #define ND_OPT_PREFIX_INFORMATION 3
282: #define ND_OPT_REDIRECTED_HEADER 4
283: #define ND_OPT_MTU 5
284:
285: struct nd_opt_prefix_info { /* prefix information */
286: u_int8_t nd_opt_pi_type;
287: u_int8_t nd_opt_pi_len;
288: u_int8_t nd_opt_pi_prefix_len;
289: u_int8_t nd_opt_pi_flags_reserved;
290: u_int32_t nd_opt_pi_valid_time;
291: u_int32_t nd_opt_pi_preferred_time;
292: u_int32_t nd_opt_pi_reserved2;
293: struct in6_addr nd_opt_pi_prefix;
294: } __packed;
295:
296: #define ND_OPT_PI_FLAG_ONLINK 0x80
297: #define ND_OPT_PI_FLAG_AUTO 0x40
298:
299: struct nd_opt_rd_hdr { /* redirected header */
300: u_int8_t nd_opt_rh_type;
301: u_int8_t nd_opt_rh_len;
302: u_int16_t nd_opt_rh_reserved1;
303: u_int32_t nd_opt_rh_reserved2;
304: /* followed by IP header and data */
305: } __packed;
306:
307: struct nd_opt_mtu { /* MTU option */
308: u_int8_t nd_opt_mtu_type;
309: u_int8_t nd_opt_mtu_len;
310: u_int16_t nd_opt_mtu_reserved;
311: u_int32_t nd_opt_mtu_mtu;
312: } __packed;
313:
314: /*
315: * icmp6 namelookup
316: */
317:
318: struct icmp6_namelookup {
319: struct icmp6_hdr icmp6_nl_hdr;
320: u_int8_t icmp6_nl_nonce[8];
321: int32_t icmp6_nl_ttl;
322: #if 0
323: u_int8_t icmp6_nl_len;
324: u_int8_t icmp6_nl_name[3];
325: #endif
326: /* could be followed by options */
327: } __packed;
328:
329: /*
330: * icmp6 node information
331: */
332: struct icmp6_nodeinfo {
333: struct icmp6_hdr icmp6_ni_hdr;
334: u_int8_t icmp6_ni_nonce[8];
335: /* could be followed by reply data */
336: } __packed;
337:
338: #define ni_type icmp6_ni_hdr.icmp6_type
339: #define ni_code icmp6_ni_hdr.icmp6_code
340: #define ni_cksum icmp6_ni_hdr.icmp6_cksum
341: #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
342: #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
343:
344: #define NI_QTYPE_NOOP 0 /* NOOP */
345: #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
346: #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
347: #define NI_QTYPE_DNSNAME 2 /* DNS Name */
348: #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
349: #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
350:
351: #if _BYTE_ORDER == _BIG_ENDIAN
352: #define NI_SUPTYPE_FLAG_COMPRESS 0x1
353: #define NI_FQDN_FLAG_VALIDTTL 0x1
354: #elif _BYTE_ORDER == _LITTLE_ENDIAN
355: #define NI_SUPTYPE_FLAG_COMPRESS 0x0100
356: #define NI_FQDN_FLAG_VALIDTTL 0x0100
357: #endif
358:
359: #ifdef NAME_LOOKUPS_04
360: #if _BYTE_ORDER == _BIG_ENDIAN
361: #define NI_NODEADDR_FLAG_LINKLOCAL 0x1
362: #define NI_NODEADDR_FLAG_SITELOCAL 0x2
363: #define NI_NODEADDR_FLAG_GLOBAL 0x4
364: #define NI_NODEADDR_FLAG_ALL 0x8
365: #define NI_NODEADDR_FLAG_TRUNCATE 0x10
366: #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
367: #elif _BYTE_ORDER == _LITTLE_ENDIAN
368: #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
369: #define NI_NODEADDR_FLAG_SITELOCAL 0x0200
370: #define NI_NODEADDR_FLAG_GLOBAL 0x0400
371: #define NI_NODEADDR_FLAG_ALL 0x0800
372: #define NI_NODEADDR_FLAG_TRUNCATE 0x1000
373: #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
374: #endif
375: #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
376: #if _BYTE_ORDER == _BIG_ENDIAN
377: #define NI_NODEADDR_FLAG_TRUNCATE 0x1
378: #define NI_NODEADDR_FLAG_ALL 0x2
379: #define NI_NODEADDR_FLAG_COMPAT 0x4
380: #define NI_NODEADDR_FLAG_LINKLOCAL 0x8
381: #define NI_NODEADDR_FLAG_SITELOCAL 0x10
382: #define NI_NODEADDR_FLAG_GLOBAL 0x20
383: #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
384: #elif _BYTE_ORDER == _LITTLE_ENDIAN
385: #define NI_NODEADDR_FLAG_TRUNCATE 0x0100
386: #define NI_NODEADDR_FLAG_ALL 0x0200
387: #define NI_NODEADDR_FLAG_COMPAT 0x0400
388: #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
389: #define NI_NODEADDR_FLAG_SITELOCAL 0x1000
390: #define NI_NODEADDR_FLAG_GLOBAL 0x2000
391: #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
392: #endif
393: #endif
394:
395: struct ni_reply_fqdn {
396: u_int32_t ni_fqdn_ttl; /* TTL */
397: u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
398: u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
399: } __packed;
400:
401: /*
402: * Router Renumbering. as router-renum-08.txt
403: */
404: struct icmp6_router_renum { /* router renumbering header */
405: struct icmp6_hdr rr_hdr;
406: u_int8_t rr_segnum;
407: u_int8_t rr_flags;
408: u_int16_t rr_maxdelay;
409: u_int32_t rr_reserved;
410: } __packed;
411:
412: #define ICMP6_RR_FLAGS_TEST 0x80
413: #define ICMP6_RR_FLAGS_REQRESULT 0x40
414: #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
415: #define ICMP6_RR_FLAGS_SPECSITE 0x10
416: #define ICMP6_RR_FLAGS_PREVDONE 0x08
417:
418: #define rr_type rr_hdr.icmp6_type
419: #define rr_code rr_hdr.icmp6_code
420: #define rr_cksum rr_hdr.icmp6_cksum
421: #define rr_seqnum rr_hdr.icmp6_data32[0]
422:
423: struct rr_pco_match { /* match prefix part */
424: u_int8_t rpm_code;
425: u_int8_t rpm_len;
426: u_int8_t rpm_ordinal;
427: u_int8_t rpm_matchlen;
428: u_int8_t rpm_minlen;
429: u_int8_t rpm_maxlen;
430: u_int16_t rpm_reserved;
431: struct in6_addr rpm_prefix;
432: } __packed;
433:
434: #define RPM_PCO_ADD 1
435: #define RPM_PCO_CHANGE 2
436: #define RPM_PCO_SETGLOBAL 3
437: #define RPM_PCO_MAX 4
438:
439: struct rr_pco_use { /* use prefix part */
440: u_int8_t rpu_uselen;
441: u_int8_t rpu_keeplen;
442: u_int8_t rpu_ramask;
443: u_int8_t rpu_raflags;
444: u_int32_t rpu_vltime;
445: u_int32_t rpu_pltime;
446: u_int32_t rpu_flags;
447: struct in6_addr rpu_prefix;
448: } __packed;
449: #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
450: #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
451:
452: #if _BYTE_ORDER == _BIG_ENDIAN
453: #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
454: #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
455: #elif _BYTE_ORDER == _LITTLE_ENDIAN
456: #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
457: #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
458: #endif
459:
460: struct rr_result { /* router renumbering result message */
461: u_int16_t rrr_flags;
462: u_int8_t rrr_ordinal;
463: u_int8_t rrr_matchedlen;
464: u_int32_t rrr_ifid;
465: struct in6_addr rrr_prefix;
466: } __packed;
467: #if _BYTE_ORDER == _BIG_ENDIAN
468: #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
469: #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
470: #elif _BYTE_ORDER == _LITTLE_ENDIAN
471: #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
472: #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
473: #endif
474:
475: /*
476: * icmp6 filter structures.
477: */
478:
479: struct icmp6_filter {
480: u_int32_t icmp6_filt[8];
481: };
482:
483: #ifdef _KERNEL
484: #define ICMP6_FILTER_SETPASSALL(filterp) \
485: do { \
486: int i; u_char *p; \
487: p = (u_char *)filterp; \
488: for (i = 0; i < sizeof(struct icmp6_filter); i++) \
489: p[i] = 0xff; \
490: } while (0)
491: #define ICMP6_FILTER_SETBLOCKALL(filterp) \
492: bzero(filterp, sizeof(struct icmp6_filter))
493: #else /* _KERNEL */
494: #define ICMP6_FILTER_SETPASSALL(filterp) \
495: memset(filterp, 0xff, sizeof(struct icmp6_filter))
496: #define ICMP6_FILTER_SETBLOCKALL(filterp) \
497: memset(filterp, 0x00, sizeof(struct icmp6_filter))
498: #endif /* _KERNEL */
499:
500: #define ICMP6_FILTER_SETPASS(type, filterp) \
501: (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
502: #define ICMP6_FILTER_SETBLOCK(type, filterp) \
503: (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
504: #define ICMP6_FILTER_WILLPASS(type, filterp) \
505: ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
506: #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
507: ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
508:
509: /*
510: * Variables related to this implementation
511: * of the internet control message protocol version 6.
512: */
513: struct icmp6errstat {
514: u_int64_t icp6errs_dst_unreach_noroute;
515: u_int64_t icp6errs_dst_unreach_admin;
516: u_int64_t icp6errs_dst_unreach_beyondscope;
517: u_int64_t icp6errs_dst_unreach_addr;
518: u_int64_t icp6errs_dst_unreach_noport;
519: u_int64_t icp6errs_packet_too_big;
520: u_int64_t icp6errs_time_exceed_transit;
521: u_int64_t icp6errs_time_exceed_reassembly;
522: u_int64_t icp6errs_paramprob_header;
523: u_int64_t icp6errs_paramprob_nextheader;
524: u_int64_t icp6errs_paramprob_option;
525: u_int64_t icp6errs_redirect; /* we regard redirect as an error here */
526: u_int64_t icp6errs_unknown;
527: };
528:
529: struct icmp6stat {
530: /* statistics related to icmp6 packets generated */
531: u_int64_t icp6s_error; /* # of calls to icmp6_error */
532: u_int64_t icp6s_canterror; /* no error because old was icmp */
533: u_int64_t icp6s_toofreq; /* no error because rate limitation */
534: u_int64_t icp6s_outhist[256];
535: /* statistics related to input message processed */
536: u_int64_t icp6s_badcode; /* icmp6_code out of range */
537: u_int64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
538: u_int64_t icp6s_checksum; /* bad checksum */
539: u_int64_t icp6s_badlen; /* calculated bound mismatch */
540: /*
541: * number of responses: this member is inherited from netinet code, but
542: * for netinet6 code, it is already available in icp6s_outhist[].
543: */
544: u_int64_t icp6s_reflect;
545: u_int64_t icp6s_inhist[256];
546: u_int64_t icp6s_nd_toomanyopt; /* too many ND options */
547: struct icmp6errstat icp6s_outerrhist;
548: #define icp6s_odst_unreach_noroute \
549: icp6s_outerrhist.icp6errs_dst_unreach_noroute
550: #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
551: #define icp6s_odst_unreach_beyondscope \
552: icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
553: #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
554: #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
555: #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
556: #define icp6s_otime_exceed_transit \
557: icp6s_outerrhist.icp6errs_time_exceed_transit
558: #define icp6s_otime_exceed_reassembly \
559: icp6s_outerrhist.icp6errs_time_exceed_reassembly
560: #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
561: #define icp6s_oparamprob_nextheader \
562: icp6s_outerrhist.icp6errs_paramprob_nextheader
563: #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
564: #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
565: #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
566: u_int64_t icp6s_pmtuchg; /* path MTU changes */
567: u_int64_t icp6s_nd_badopt; /* bad ND options */
568: u_int64_t icp6s_badns; /* bad neighbor solicitation */
569: u_int64_t icp6s_badna; /* bad neighbor advertisement */
570: u_int64_t icp6s_badrs; /* bad router advertisement */
571: u_int64_t icp6s_badra; /* bad router advertisement */
572: u_int64_t icp6s_badredirect; /* bad redirect message */
573: };
574:
575: /*
576: * Names for ICMP sysctl objects
577: */
578: #define ICMPV6CTL_STATS 1
579: #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
580: #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
581: #if 0 /*obsoleted*/
582: #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
583: #endif
584: #define ICMPV6CTL_ND6_PRUNE 6
585: #define ICMPV6CTL_ND6_DELAY 8
586: #define ICMPV6CTL_ND6_UMAXTRIES 9
587: #define ICMPV6CTL_ND6_MMAXTRIES 10
588: #define ICMPV6CTL_ND6_USELOOPBACK 11
589: /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
590: #define ICMPV6CTL_NODEINFO 13
591: #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
592: #define ICMPV6CTL_ND6_MAXNUDHINT 15
593: #define ICMPV6CTL_MTUDISC_HIWAT 16
594: #define ICMPV6CTL_MTUDISC_LOWAT 17
595: #define ICMPV6CTL_ND6_DEBUG 18
596: #define ICMPV6CTL_ND6_DRLIST 19
597: #define ICMPV6CTL_ND6_PRLIST 20
598: #define ICMPV6CTL_MAXID 21
599:
600: #define ICMPV6CTL_NAMES { \
601: { 0, 0 }, \
602: { 0, 0 }, \
603: { "rediraccept", CTLTYPE_INT }, \
604: { "redirtimeout", CTLTYPE_INT }, \
605: { 0, 0 }, \
606: { 0, 0 }, \
607: { "nd6_prune", CTLTYPE_INT }, \
608: { 0, 0 }, \
609: { "nd6_delay", CTLTYPE_INT }, \
610: { "nd6_umaxtries", CTLTYPE_INT }, \
611: { "nd6_mmaxtries", CTLTYPE_INT }, \
612: { "nd6_useloopback", CTLTYPE_INT }, \
613: { 0, 0 }, \
614: { "nodeinfo", CTLTYPE_INT }, \
615: { "errppslimit", CTLTYPE_INT }, \
616: { "nd6_maxnudhint", CTLTYPE_INT }, \
617: { "mtudisc_hiwat", CTLTYPE_INT }, \
618: { "mtudisc_lowat", CTLTYPE_INT }, \
619: { "nd6_debug", CTLTYPE_INT }, \
620: { 0, 0 }, \
621: { 0, 0 }, \
622: }
623:
624: #define ICMPV6CTL_VARS { \
625: NULL, \
626: NULL, \
627: &icmp6_rediraccept, \
628: &icmp6_redirtimeout, \
629: NULL, \
630: NULL, \
631: &nd6_prune, \
632: NULL, \
633: &nd6_delay, \
634: &nd6_umaxtries, \
635: &nd6_mmaxtries, \
636: &nd6_useloopback, \
637: NULL, \
638: &icmp6_nodeinfo, \
639: &icmp6errppslim, \
640: &nd6_maxnudhint, \
641: &icmp6_mtudisc_hiwat, \
642: &icmp6_mtudisc_lowat, \
643: &nd6_debug, \
644: NULL, \
645: NULL, \
646: }
647:
648: #define RTF_PROBEMTU RTF_PROTO1
649:
650: #ifdef _KERNEL
651: # ifdef __STDC__
652: struct rtentry;
653: struct rttimer;
654: struct in6_multi;
655: # endif
656: void icmp6_init(void);
657: void icmp6_paramerror(struct mbuf *, int);
658: void icmp6_error(struct mbuf *, int, int, int);
659: int icmp6_input(struct mbuf **, int *, int);
660: void icmp6_fasttimo(void);
661: void icmp6_reflect(struct mbuf *, size_t);
662: void icmp6_prepare(struct mbuf *);
663: void icmp6_redirect_input(struct mbuf *, int);
664: void icmp6_redirect_output(struct mbuf *, struct rtentry *);
665: int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
666:
667: struct ip6ctlparam;
668: void icmp6_mtudisc_update(struct ip6ctlparam *, int);
669: void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *));
670:
671: /* XXX: is this the right place for these macros? */
672: #define icmp6_ifstat_inc(ifp, tag) \
673: do { \
674: if (ifp) \
675: ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
676: } while (0)
677:
678: #define icmp6_ifoutstat_inc(ifp, type, code) \
679: do { \
680: icmp6_ifstat_inc(ifp, ifs6_out_msg); \
681: switch(type) { \
682: case ICMP6_DST_UNREACH: \
683: icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
684: if (code == ICMP6_DST_UNREACH_ADMIN) \
685: icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
686: break; \
687: case ICMP6_PACKET_TOO_BIG: \
688: icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
689: break; \
690: case ICMP6_TIME_EXCEEDED: \
691: icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
692: break; \
693: case ICMP6_PARAM_PROB: \
694: icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
695: break; \
696: case ICMP6_ECHO_REQUEST: \
697: icmp6_ifstat_inc(ifp, ifs6_out_echo); \
698: break; \
699: case ICMP6_ECHO_REPLY: \
700: icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
701: break; \
702: case MLD_LISTENER_QUERY: \
703: icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
704: break; \
705: case MLD_LISTENER_REPORT: \
706: icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
707: break; \
708: case MLD_LISTENER_DONE: \
709: icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
710: break; \
711: case ND_ROUTER_SOLICIT: \
712: icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
713: break; \
714: case ND_ROUTER_ADVERT: \
715: icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
716: break; \
717: case ND_NEIGHBOR_SOLICIT: \
718: icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
719: break; \
720: case ND_NEIGHBOR_ADVERT: \
721: icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
722: break; \
723: case ND_REDIRECT: \
724: icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
725: break; \
726: } \
727: } while (0)
728:
729: extern int icmp6_rediraccept; /* accept/process redirects */
730: extern int icmp6_redirtimeout; /* cache time for redirect routes */
731: #endif /* _KERNEL */
732: #endif /* _NETINET_ICMP6_H_ */
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