FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6.h
1 /* $FreeBSD: releng/5.1/sys/netinet6/in6.h 114259 2003-04-29 22:03:46Z mdodd $ */
2 /* $KAME: in6.h,v 1.89 2001/05/27 13:28:35 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, 1990, 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. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by the University of
48 * California, Berkeley and its contributors.
49 * 4. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 *
65 * @(#)in.h 8.3 (Berkeley) 1/3/94
66 */
67
68 #ifndef __KAME_NETINET_IN_H_INCLUDED_
69 #error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
70 #endif
71
72 #ifndef _NETINET6_IN6_H_
73 #define _NETINET6_IN6_H_
74
75 /*
76 * Identification of the network protocol stack
77 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
78 * has the table of implementation/integration differences.
79 */
80 #define __KAME__
81 #define __KAME_VERSION "20010528/FreeBSD"
82
83 /*
84 * Local port number conventions:
85 *
86 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
87 * unless a kernel is compiled with IPNOPRIVPORTS defined.
88 *
89 * When a user does a bind(2) or connect(2) with a port number of zero,
90 * a non-conflicting local port address is chosen.
91 *
92 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
93 * that is settable by sysctl(3); net.inet.ip.anonportmin and
94 * net.inet.ip.anonportmax respectively.
95 *
96 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
97 * default assignment range.
98 *
99 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
100 *
101 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
102 * and exists only for FreeBSD compatibility purposes.
103 *
104 * The value IP_PORTRANGE_LOW changes the range to the "low" are
105 * that is (by convention) restricted to privileged processes.
106 * This convention is based on "vouchsafe" principles only.
107 * It is only secure if you trust the remote host to restrict these ports.
108 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
109 */
110 #if __BSD_VISIBLE
111 #define IPV6PORT_RESERVED 1024
112 #define IPV6PORT_ANONMIN 49152
113 #define IPV6PORT_ANONMAX 65535
114 #define IPV6PORT_RESERVEDMIN 600
115 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
116 #endif
117
118 /*
119 * IPv6 address
120 */
121 struct in6_addr {
122 union {
123 uint8_t __u6_addr8[16];
124 uint16_t __u6_addr16[8];
125 uint32_t __u6_addr32[4];
126 } __u6_addr; /* 128-bit IP6 address */
127 };
128
129 #define s6_addr __u6_addr.__u6_addr8
130 #ifdef _KERNEL /* XXX nonstandard */
131 #define s6_addr8 __u6_addr.__u6_addr8
132 #define s6_addr16 __u6_addr.__u6_addr16
133 #define s6_addr32 __u6_addr.__u6_addr32
134 #endif
135
136 #define INET6_ADDRSTRLEN 46
137
138 /*
139 * XXX missing POSIX.1-2001 macro IPPROTO_IPV6.
140 */
141
142 /*
143 * Socket address for IPv6
144 */
145 #if __BSD_VISIBLE
146 #define SIN6_LEN
147 #endif
148
149 struct sockaddr_in6 {
150 uint8_t sin6_len; /* length of this struct */
151 sa_family_t sin6_family; /* AF_INET6 */
152 in_port_t sin6_port; /* Transport layer port # */
153 uint32_t sin6_flowinfo; /* IP6 flow information */
154 struct in6_addr sin6_addr; /* IP6 address */
155 uint32_t sin6_scope_id; /* scope zone index */
156 };
157
158 /*
159 * Local definition for masks
160 */
161 #ifdef _KERNEL /* XXX nonstandard */
162 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
163 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
164 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
165 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
166 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
167 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
168 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
169 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
170 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
171 #endif
172
173 #ifdef _KERNEL
174 extern const struct sockaddr_in6 sa6_any;
175
176 extern const struct in6_addr in6mask0;
177 extern const struct in6_addr in6mask32;
178 extern const struct in6_addr in6mask64;
179 extern const struct in6_addr in6mask96;
180 extern const struct in6_addr in6mask128;
181 #endif /* _KERNEL */
182
183 /*
184 * Macros started with IPV6_ADDR is KAME local
185 */
186 #ifdef _KERNEL /* XXX nonstandard */
187 #if _BYTE_ORDER == _BIG_ENDIAN
188 #define IPV6_ADDR_INT32_ONE 1
189 #define IPV6_ADDR_INT32_TWO 2
190 #define IPV6_ADDR_INT32_MNL 0xff010000
191 #define IPV6_ADDR_INT32_MLL 0xff020000
192 #define IPV6_ADDR_INT32_SMP 0x0000ffff
193 #define IPV6_ADDR_INT16_ULL 0xfe80
194 #define IPV6_ADDR_INT16_USL 0xfec0
195 #define IPV6_ADDR_INT16_MLL 0xff02
196 #elif _BYTE_ORDER == _LITTLE_ENDIAN
197 #define IPV6_ADDR_INT32_ONE 0x01000000
198 #define IPV6_ADDR_INT32_TWO 0x02000000
199 #define IPV6_ADDR_INT32_MNL 0x000001ff
200 #define IPV6_ADDR_INT32_MLL 0x000002ff
201 #define IPV6_ADDR_INT32_SMP 0xffff0000
202 #define IPV6_ADDR_INT16_ULL 0x80fe
203 #define IPV6_ADDR_INT16_USL 0xc0fe
204 #define IPV6_ADDR_INT16_MLL 0x02ff
205 #endif
206 #endif
207
208 /*
209 * Definition of some useful macros to handle IP6 addresses
210 */
211 #if __BSD_VISIBLE
212 #define IN6ADDR_ANY_INIT \
213 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
214 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
215 #define IN6ADDR_LOOPBACK_INIT \
216 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
217 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
218 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
219 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
220 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
221 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
222 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
223 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
224 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
225 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
226 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
227 #define IN6ADDR_LINKLOCAL_ALLMDNS_INIT \
228 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
229 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfb }}}
230 #endif
231
232 extern const struct in6_addr in6addr_any;
233 extern const struct in6_addr in6addr_loopback;
234 #if __BSD_VISIBLE
235 extern const struct in6_addr in6addr_nodelocal_allnodes;
236 extern const struct in6_addr in6addr_linklocal_allnodes;
237 extern const struct in6_addr in6addr_linklocal_allrouters;
238 #endif
239
240 /*
241 * Equality
242 * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
243 * does not supply memcmp(). For userland memcmp() is preferred as it is
244 * in ANSI standard.
245 */
246 #ifdef _KERNEL
247 #define IN6_ARE_ADDR_EQUAL(a, b) \
248 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
249 #else
250 #if __BSD_VISIBLE
251 #define IN6_ARE_ADDR_EQUAL(a, b) \
252 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
253 #endif
254 #endif
255
256 #ifdef _KERNEL /* non standard */
257 /* see if two addresses are equal in a scope-conscious manner. */
258 #define SA6_ARE_ADDR_EQUAL(a, b) \
259 (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
260 ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
261 (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
262 #endif
263
264 /*
265 * Unspecified
266 */
267 #define IN6_IS_ADDR_UNSPECIFIED(a) \
268 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
269 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
270 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
271 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
272
273 /*
274 * Loopback
275 */
276 #define IN6_IS_ADDR_LOOPBACK(a) \
277 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
278 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
279 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
280 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
281
282 /*
283 * IPv4 compatible
284 */
285 #define IN6_IS_ADDR_V4COMPAT(a) \
286 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
287 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
288 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
289 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
290 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
291
292 /*
293 * Mapped
294 */
295 #define IN6_IS_ADDR_V4MAPPED(a) \
296 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
297 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
298 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
299
300 /*
301 * KAME Scope Values
302 */
303
304 #ifdef _KERNEL /* XXX nonstandard */
305 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
306 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
307 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
308 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
309 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
310 #else
311 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
312 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
313 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
314 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
315 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
316 #endif
317
318 /*
319 * Unicast Scope
320 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
321 */
322 #define IN6_IS_ADDR_LINKLOCAL(a) \
323 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
324 #define IN6_IS_ADDR_SITELOCAL(a) \
325 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
326
327 /*
328 * Multicast
329 */
330 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
331
332 #ifdef _KERNEL /* XXX nonstandard */
333 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
334 #else
335 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
336 #endif
337
338 /*
339 * Multicast Scope
340 */
341 #ifdef _KERNEL /* refers nonstandard items */
342 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
343 (IN6_IS_ADDR_MULTICAST(a) && \
344 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
345 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
346 (IN6_IS_ADDR_MULTICAST(a) && \
347 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
348 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
349 (IN6_IS_ADDR_MULTICAST(a) && \
350 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
351 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
352 (IN6_IS_ADDR_MULTICAST(a) && \
353 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
354 #define IN6_IS_ADDR_MC_GLOBAL(a) \
355 (IN6_IS_ADDR_MULTICAST(a) && \
356 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
357 #else
358 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
359 (IN6_IS_ADDR_MULTICAST(a) && \
360 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
361 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
362 (IN6_IS_ADDR_MULTICAST(a) && \
363 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
364 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
365 (IN6_IS_ADDR_MULTICAST(a) && \
366 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
367 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
368 (IN6_IS_ADDR_MULTICAST(a) && \
369 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
370 #define IN6_IS_ADDR_MC_GLOBAL(a) \
371 (IN6_IS_ADDR_MULTICAST(a) && \
372 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
373 #endif
374
375 #ifdef _KERNEL /* nonstandard */
376 /*
377 * KAME Scope
378 */
379 #define IN6_IS_SCOPE_LINKLOCAL(a) \
380 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
381 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
382
383 #define IFA6_IS_DEPRECATED(a) \
384 ((a)->ia6_lifetime.ia6t_preferred != 0 && \
385 (a)->ia6_lifetime.ia6t_preferred < time_second)
386 #define IFA6_IS_INVALID(a) \
387 ((a)->ia6_lifetime.ia6t_expire != 0 && \
388 (a)->ia6_lifetime.ia6t_expire < time_second)
389 #endif /* _KERNEL */
390
391 /*
392 * IP6 route structure
393 */
394 #if __BSD_VISIBLE
395 struct route_in6 {
396 struct rtentry *ro_rt;
397 struct sockaddr_in6 ro_dst;
398 };
399 #endif
400
401 /*
402 * Options for use with [gs]etsockopt at the IPV6 level.
403 * First word of comment is data type; bool is stored in int.
404 */
405 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
406 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
407 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
408 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
409 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
410 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
411 #define IPV6_V6ONLY 27 /* bool; only bind INET6 at wildcard bind */
412
413 #if __BSD_VISIBLE
414 /* no hdrincl */
415 #if 0 /* the followings are relic in IPv4 and hence are disabled */
416 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
417 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
418 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
419 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
420 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
421 #endif
422 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
423 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
424 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
425 /* RFC2292 options */
426 #define IPV6_PKTINFO 19 /* bool; send/recv if, src/dst addr */
427 #define IPV6_HOPLIMIT 20 /* bool; hop limit */
428 #define IPV6_NEXTHOP 21 /* bool; next hop addr */
429 #define IPV6_HOPOPTS 22 /* bool; hop-by-hop option */
430 #define IPV6_DSTOPTS 23 /* bool; destination option */
431 #define IPV6_RTHDR 24 /* bool; routing header */
432 #define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
433
434 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
435 #ifndef _KERNEL
436 #define IPV6_BINDV6ONLY IPV6_V6ONLY
437 #endif
438
439 #if 1 /* IPSEC */
440 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
441 #endif
442 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
443
444 #if 1 /* IPV6FIREWALL */
445 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
446 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
447 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
448 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
449 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
450 #endif
451
452 /* to define items, should talk with KAME guys first, for *BSD compatibility */
453
454 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
455 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
456 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
457
458 /*
459 * Defaults and limits for options
460 */
461 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
462 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
463
464 /*
465 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
466 */
467 struct ipv6_mreq {
468 struct in6_addr ipv6mr_multiaddr;
469 unsigned int ipv6mr_interface;
470 };
471
472 /*
473 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
474 */
475 struct in6_pktinfo {
476 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
477 unsigned int ipi6_ifindex; /* send/recv interface index */
478 };
479
480 /*
481 * Argument for IPV6_PORTRANGE:
482 * - which range to search when port is unspecified at bind() or connect()
483 */
484 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
485 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
486 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
487
488 /*
489 * Definitions for inet6 sysctl operations.
490 *
491 * Third level is protocol number.
492 * Fourth level is desired variable within that protocol.
493 */
494 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
495
496 #define CTL_IPV6PROTO_NAMES { \
497 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
498 { 0, 0 }, \
499 { "tcp6", CTLTYPE_NODE }, \
500 { 0, 0 }, \
501 { 0, 0 }, \
502 { 0, 0 }, \
503 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
504 { 0, 0 }, \
505 { 0, 0 }, \
506 { "udp6", CTLTYPE_NODE }, \
507 { 0, 0 }, \
508 { 0, 0 }, \
509 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
510 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
511 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
512 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
513 { 0, 0 }, \
514 { "ip6", CTLTYPE_NODE }, \
515 { 0, 0 }, \
516 { 0, 0 }, \
517 { 0, 0 }, \
518 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
519 { 0, 0 }, \
520 { "ipsec6", CTLTYPE_NODE }, \
521 { 0, 0 }, \
522 { 0, 0 }, \
523 { 0, 0 }, \
524 { 0, 0 }, \
525 { 0, 0 }, \
526 { 0, 0 }, \
527 { "icmp6", CTLTYPE_NODE }, \
528 { 0, 0 }, \
529 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
530 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
531 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
532 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
533 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
534 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
535 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
536 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
537 { 0, 0 }, \
538 { 0, 0 }, \
539 { 0, 0 }, \
540 { "pim6", CTLTYPE_NODE }, \
541 }
542
543 /*
544 * Names for IP sysctl objects
545 */
546 #define IPV6CTL_FORWARDING 1 /* act as router */
547 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
548 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
549 #ifdef notyet
550 #define IPV6CTL_DEFMTU 4 /* default MTU */
551 #endif
552 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
553 #define IPV6CTL_STATS 6 /* stats */
554 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
555 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
556 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
557 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
558 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
559 #define IPV6CTL_ACCEPT_RTADV 12
560 #define IPV6CTL_KEEPFAITH 13
561 #define IPV6CTL_LOG_INTERVAL 14
562 #define IPV6CTL_HDRNESTLIMIT 15
563 #define IPV6CTL_DAD_COUNT 16
564 #define IPV6CTL_AUTO_FLOWLABEL 17
565 #define IPV6CTL_DEFMCASTHLIM 18
566 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
567 #define IPV6CTL_KAME_VERSION 20
568 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
569 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
570 #if 0 /* obsolete */
571 #define IPV6CTL_MAPPED_ADDR 23
572 #endif
573 #define IPV6CTL_V6ONLY 24
574 #define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
575 #define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
576 #define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
577
578 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
579 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
580 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
581 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
582 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
583
584 /* New entries should be added here from current IPV6CTL_MAXID value. */
585 /* to define items, should talk with KAME guys first, for *BSD compatibility */
586 #define IPV6CTL_MAXID 37
587
588 /*
589 * Redefinition of mbuf flags
590 */
591 #define M_AUTHIPHDR M_PROTO2
592 #define M_DECRYPTED M_PROTO3
593 #define M_LOOP M_PROTO4
594 #define M_AUTHIPDGM M_PROTO5
595
596 #ifdef _KERNEL
597 struct cmsghdr;
598
599 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
600 int in6_localaddr __P((struct in6_addr *));
601 int in6_addrscope __P((struct in6_addr *));
602 struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *));
603 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
604 extern void in6_if_up __P((struct ifnet *));
605 struct sockaddr;
606 extern u_char ip6_protox[];
607
608 void in6_sin6_2_sin __P((struct sockaddr_in *sin,
609 struct sockaddr_in6 *sin6));
610 void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
611 struct sockaddr_in6 *sin6));
612 void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
613 void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
614
615 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
616 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
617 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
618
619 extern int (*faithprefix_p)(struct in6_addr *);
620 #endif /* _KERNEL */
621
622 #ifndef _SIZE_T_DECLARED
623 typedef __size_t size_t;
624 #define _SIZE_T_DECLARED
625 #endif
626
627 __BEGIN_DECLS
628 struct cmsghdr;
629
630 extern int inet6_option_space __P((int));
631 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
632 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *,
633 int, int));
634 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
635 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **));
636 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int));
637
638 extern size_t inet6_rthdr_space __P((int, int));
639 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
640 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
641 unsigned int));
642 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
643 #if 0 /* not implemented yet */
644 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
645 #endif
646 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
647 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
648 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
649
650 extern int inet6_opt_init __P((void *, size_t));
651 extern int inet6_opt_append __P((void *, size_t, int, uint8_t,
652 size_t, uint8_t, void **));
653 extern int inet6_opt_finish __P((void *, size_t, int));
654 extern int inet6_opt_set_val __P((void *, size_t, void *, int));
655
656 extern int inet6_opt_next __P((void *, size_t, int, uint8_t *,
657 size_t *, void **));
658 extern int inet6_opt_find __P((void *, size_t, int, uint8_t,
659 size_t *, void **));
660 extern int inet6_opt_get_val __P((void *, size_t, void *, int));
661 extern size_t inet6_rth_space __P((int, int));
662 extern void *inet6_rth_init __P((void *, int, int, int));
663 extern int inet6_rth_add __P((void *, const struct in6_addr *));
664 extern int inet6_rth_reverse __P((const void *, void *));
665 extern int inet6_rth_segments __P((const void *));
666 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
667 __END_DECLS
668
669 #endif /* __BSD_VISIBLE */
670
671 #endif /* !_NETINET6_IN6_H_ */
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