FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6.h
1 /* $FreeBSD: src/sys/netinet6/in6.h,v 1.35.2.3.2.1 2007/04/26 23:41:27 cperciva Exp $ */
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 * 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 * @(#)in.h 8.3 (Berkeley) 1/3/94
62 */
63
64 #ifndef __KAME_NETINET_IN_H_INCLUDED_
65 #error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
66 #endif
67
68 #ifndef _NETINET6_IN6_H_
69 #define _NETINET6_IN6_H_
70
71 /*
72 * Identification of the network protocol stack
73 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
74 * has the table of implementation/integration differences.
75 */
76 #define __KAME__
77 #define __KAME_VERSION "20010528/FreeBSD"
78
79 /*
80 * Local port number conventions:
81 *
82 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
83 * unless a kernel is compiled with IPNOPRIVPORTS defined.
84 *
85 * When a user does a bind(2) or connect(2) with a port number of zero,
86 * a non-conflicting local port address is chosen.
87 *
88 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
89 * that is settable by sysctl(3); net.inet.ip.anonportmin and
90 * net.inet.ip.anonportmax respectively.
91 *
92 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
93 * default assignment range.
94 *
95 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
96 *
97 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
98 * and exists only for FreeBSD compatibility purposes.
99 *
100 * The value IP_PORTRANGE_LOW changes the range to the "low" are
101 * that is (by convention) restricted to privileged processes.
102 * This convention is based on "vouchsafe" principles only.
103 * It is only secure if you trust the remote host to restrict these ports.
104 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
105 */
106 #if __BSD_VISIBLE
107 #define IPV6PORT_RESERVED 1024
108 #define IPV6PORT_ANONMIN 49152
109 #define IPV6PORT_ANONMAX 65535
110 #define IPV6PORT_RESERVEDMIN 600
111 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
112 #endif
113
114 /*
115 * IPv6 address
116 */
117 struct in6_addr {
118 union {
119 uint8_t __u6_addr8[16];
120 uint16_t __u6_addr16[8];
121 uint32_t __u6_addr32[4];
122 } __u6_addr; /* 128-bit IP6 address */
123 };
124
125 #define s6_addr __u6_addr.__u6_addr8
126 #ifdef _KERNEL /* XXX nonstandard */
127 #define s6_addr8 __u6_addr.__u6_addr8
128 #define s6_addr16 __u6_addr.__u6_addr16
129 #define s6_addr32 __u6_addr.__u6_addr32
130 #endif
131
132 #define INET6_ADDRSTRLEN 46
133
134 /*
135 * XXX missing POSIX.1-2001 macro IPPROTO_IPV6.
136 */
137
138 /*
139 * Socket address for IPv6
140 */
141 #if __BSD_VISIBLE
142 #define SIN6_LEN
143 #endif
144
145 struct sockaddr_in6 {
146 uint8_t sin6_len; /* length of this struct */
147 sa_family_t sin6_family; /* AF_INET6 */
148 in_port_t sin6_port; /* Transport layer port # */
149 uint32_t sin6_flowinfo; /* IP6 flow information */
150 struct in6_addr sin6_addr; /* IP6 address */
151 uint32_t sin6_scope_id; /* scope zone index */
152 };
153
154 /*
155 * Local definition for masks
156 */
157 #ifdef _KERNEL /* XXX nonstandard */
158 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
159 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
160 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
161 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
162 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
163 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
164 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
165 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
166 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
167 #endif
168
169 #ifdef _KERNEL
170 extern const struct sockaddr_in6 sa6_any;
171
172 extern const struct in6_addr in6mask0;
173 extern const struct in6_addr in6mask32;
174 extern const struct in6_addr in6mask64;
175 extern const struct in6_addr in6mask96;
176 extern const struct in6_addr in6mask128;
177 #endif /* _KERNEL */
178
179 /*
180 * Macros started with IPV6_ADDR is KAME local
181 */
182 #ifdef _KERNEL /* XXX nonstandard */
183 #if _BYTE_ORDER == _BIG_ENDIAN
184 #define IPV6_ADDR_INT32_ONE 1
185 #define IPV6_ADDR_INT32_TWO 2
186 #define IPV6_ADDR_INT32_MNL 0xff010000
187 #define IPV6_ADDR_INT32_MLL 0xff020000
188 #define IPV6_ADDR_INT32_SMP 0x0000ffff
189 #define IPV6_ADDR_INT16_ULL 0xfe80
190 #define IPV6_ADDR_INT16_USL 0xfec0
191 #define IPV6_ADDR_INT16_MLL 0xff02
192 #elif _BYTE_ORDER == _LITTLE_ENDIAN
193 #define IPV6_ADDR_INT32_ONE 0x01000000
194 #define IPV6_ADDR_INT32_TWO 0x02000000
195 #define IPV6_ADDR_INT32_MNL 0x000001ff
196 #define IPV6_ADDR_INT32_MLL 0x000002ff
197 #define IPV6_ADDR_INT32_SMP 0xffff0000
198 #define IPV6_ADDR_INT16_ULL 0x80fe
199 #define IPV6_ADDR_INT16_USL 0xc0fe
200 #define IPV6_ADDR_INT16_MLL 0x02ff
201 #endif
202 #endif
203
204 /*
205 * Definition of some useful macros to handle IP6 addresses
206 */
207 #if __BSD_VISIBLE
208 #define IN6ADDR_ANY_INIT \
209 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
210 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
211 #define IN6ADDR_LOOPBACK_INIT \
212 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
213 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
214 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
215 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
216 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
217 #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
218 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
219 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
220 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
221 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
222 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
223 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
224 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
225 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
226 #endif
227
228 extern const struct in6_addr in6addr_any;
229 extern const struct in6_addr in6addr_loopback;
230 #if __BSD_VISIBLE
231 extern const struct in6_addr in6addr_nodelocal_allnodes;
232 extern const struct in6_addr in6addr_linklocal_allnodes;
233 extern const struct in6_addr in6addr_linklocal_allrouters;
234 #endif
235
236 /*
237 * Equality
238 * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
239 * does not supply memcmp(). For userland memcmp() is preferred as it is
240 * in ANSI standard.
241 */
242 #ifdef _KERNEL
243 #define IN6_ARE_ADDR_EQUAL(a, b) \
244 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
245 #else
246 #if __BSD_VISIBLE
247 #define IN6_ARE_ADDR_EQUAL(a, b) \
248 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
249 #endif
250 #endif
251
252 #ifdef _KERNEL /* non standard */
253 /* see if two addresses are equal in a scope-conscious manner. */
254 #define SA6_ARE_ADDR_EQUAL(a, b) \
255 (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
256 ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
257 (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
258 #endif
259
260 /*
261 * Unspecified
262 */
263 #define IN6_IS_ADDR_UNSPECIFIED(a) \
264 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
265 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
266 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
267 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
268
269 /*
270 * Loopback
271 */
272 #define IN6_IS_ADDR_LOOPBACK(a) \
273 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
274 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
275 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
276 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
277
278 /*
279 * IPv4 compatible
280 */
281 #define IN6_IS_ADDR_V4COMPAT(a) \
282 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
283 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
284 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
285 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
286 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
287
288 /*
289 * Mapped
290 */
291 #define IN6_IS_ADDR_V4MAPPED(a) \
292 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
293 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
294 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
295
296 /*
297 * KAME Scope Values
298 */
299
300 #ifdef _KERNEL /* XXX nonstandard */
301 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
302 #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
303 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
304 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
305 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
306 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
307 #else
308 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
309 #define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
310 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
311 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
312 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
313 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
314 #endif
315
316 /*
317 * Unicast Scope
318 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
319 */
320 #define IN6_IS_ADDR_LINKLOCAL(a) \
321 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
322 #define IN6_IS_ADDR_SITELOCAL(a) \
323 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
324
325 /*
326 * Multicast
327 */
328 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
329
330 #ifdef _KERNEL /* XXX nonstandard */
331 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
332 #else
333 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
334 #endif
335
336 /*
337 * Multicast Scope
338 */
339 #ifdef _KERNEL /* refers nonstandard items */
340 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
341 (IN6_IS_ADDR_MULTICAST(a) && \
342 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
343 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
344 (IN6_IS_ADDR_MULTICAST(a) && \
345 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
346 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
347 (IN6_IS_ADDR_MULTICAST(a) && \
348 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
349 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
350 (IN6_IS_ADDR_MULTICAST(a) && \
351 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
352 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
353 (IN6_IS_ADDR_MULTICAST(a) && \
354 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
355 #define IN6_IS_ADDR_MC_GLOBAL(a) \
356 (IN6_IS_ADDR_MULTICAST(a) && \
357 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
358 #else
359 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
360 (IN6_IS_ADDR_MULTICAST(a) && \
361 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
362 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
363 (IN6_IS_ADDR_MULTICAST(a) && \
364 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
365 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
366 (IN6_IS_ADDR_MULTICAST(a) && \
367 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
368 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
369 (IN6_IS_ADDR_MULTICAST(a) && \
370 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
371 #define IN6_IS_ADDR_MC_GLOBAL(a) \
372 (IN6_IS_ADDR_MULTICAST(a) && \
373 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
374 #endif
375
376 #ifdef _KERNEL /* nonstandard */
377 /*
378 * KAME Scope
379 */
380 #define IN6_IS_SCOPE_LINKLOCAL(a) \
381 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
382 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
383
384 #define IFA6_IS_DEPRECATED(a) \
385 ((a)->ia6_lifetime.ia6t_preferred != 0 && \
386 (a)->ia6_lifetime.ia6t_preferred < time_second)
387 #define IFA6_IS_INVALID(a) \
388 ((a)->ia6_lifetime.ia6t_expire != 0 && \
389 (a)->ia6_lifetime.ia6t_expire < time_second)
390 #endif /* _KERNEL */
391
392 /*
393 * IP6 route structure
394 */
395 #if __BSD_VISIBLE
396 struct route_in6 {
397 struct rtentry *ro_rt;
398 struct sockaddr_in6 ro_dst;
399 };
400 #endif
401
402 /*
403 * Options for use with [gs]etsockopt at the IPV6 level.
404 * First word of comment is data type; bool is stored in int.
405 */
406 /* no hdrincl */
407 #if 0 /* the followings are relic in IPv4 and hence are disabled */
408 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
409 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
410 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
411 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
412 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
413 #endif
414 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
415 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
416 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
417 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
418 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
419 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
420 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
421 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
422 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
423 /* RFC2292 options */
424 #ifdef _KERNEL
425 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
426 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
427 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
428 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
429 #define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
430 #define IPV6_2292RTHDR 24 /* bool; routing header */
431 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
432 #endif
433
434 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
435 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
436 #ifndef _KERNEL
437 #define IPV6_BINDV6ONLY IPV6_V6ONLY
438 #endif
439
440 #if 1 /* IPSEC */
441 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
442 #endif
443 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
444
445 #if 1 /* IPV6FIREWALL */
446 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
447 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
448 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
449 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
450 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
451 #endif
452
453 /* new socket options introduced in RFC3542 */
454 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
455
456 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
457 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
458 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */
459 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
460 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
461 #ifdef _KERNEL
462 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
463 #endif
464
465 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
466 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
467
468 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
469 4 bytes int; MTU notification (cmsg) */
470 #if 0 /*obsoleted during 2292bis -> 3542*/
471 #define IPV6_REACHCONF 45 /* no data; ND reachability confirm
472 (cmsg only/not in of RFC3542) */
473 #endif
474
475 /* more new socket options introduced in RFC3542 */
476 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
477 #define IPV6_HOPLIMIT 47 /* int; send hop limit */
478 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
479 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
480 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
481 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
482 #if 0
483 #define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options */
484 /* obsoleted by RFC3542 */
485 #endif
486
487 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
488
489 #define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
490
491 #define IPV6_TCLASS 61 /* int; send traffic class value */
492 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
493
494 #define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
495 * the source address.
496 */
497
498 /* to define items, should talk with KAME guys first, for *BSD compatibility */
499
500 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
501 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
502 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
503
504 /*
505 * Defaults and limits for options
506 */
507 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
508 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
509
510 /*
511 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
512 */
513 struct ipv6_mreq {
514 struct in6_addr ipv6mr_multiaddr;
515 unsigned int ipv6mr_interface;
516 };
517
518 /*
519 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
520 */
521 struct in6_pktinfo {
522 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
523 unsigned int ipi6_ifindex; /* send/recv interface index */
524 };
525
526 /*
527 * Control structure for IPV6_RECVPATHMTU socket option.
528 */
529 struct ip6_mtuinfo {
530 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
531 uint32_t ip6m_mtu;
532 };
533
534 /*
535 * Argument for IPV6_PORTRANGE:
536 * - which range to search when port is unspecified at bind() or connect()
537 */
538 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
539 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
540 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
541
542 #if __BSD_VISIBLE
543 /*
544 * Definitions for inet6 sysctl operations.
545 *
546 * Third level is protocol number.
547 * Fourth level is desired variable within that protocol.
548 */
549 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
550
551 /*
552 * Names for IP sysctl objects
553 */
554 #define IPV6CTL_FORWARDING 1 /* act as router */
555 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
556 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
557 #ifdef notyet
558 #define IPV6CTL_DEFMTU 4 /* default MTU */
559 #endif
560 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
561 #define IPV6CTL_STATS 6 /* stats */
562 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
563 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
564 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
565 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
566 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
567 #define IPV6CTL_ACCEPT_RTADV 12
568 #define IPV6CTL_KEEPFAITH 13
569 #define IPV6CTL_LOG_INTERVAL 14
570 #define IPV6CTL_HDRNESTLIMIT 15
571 #define IPV6CTL_DAD_COUNT 16
572 #define IPV6CTL_AUTO_FLOWLABEL 17
573 #define IPV6CTL_DEFMCASTHLIM 18
574 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
575 #define IPV6CTL_KAME_VERSION 20
576 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
577 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
578 #if 0 /* obsolete */
579 #define IPV6CTL_MAPPED_ADDR 23
580 #endif
581 #define IPV6CTL_V6ONLY 24
582 #define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
583 #define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
584 #define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
585
586 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
587 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
588 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
589 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
590 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
591 #define IPV6CTL_PREFER_TEMPADDR 37 /* prefer temporary addr as src */
592 #define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
593
594 #define IPV6CTL_MAXFRAGS 41 /* max fragments */
595
596 /* New entries should be added here from current IPV6CTL_MAXID value. */
597 /* to define items, should talk with KAME guys first, for *BSD compatibility */
598 /* 42-44 is already used in KAME */
599 #define IPV6CTL_STEALTH 45
600 #define IPV6CTL_RTHDR0_ALLOWED 46
601 #define IPV6CTL_MAXID 47
602 #endif /* __BSD_VISIBLE */
603
604 /*
605 * Redefinition of mbuf flags
606 */
607 #define M_AUTHIPHDR M_PROTO2
608 #define M_DECRYPTED M_PROTO3
609 #define M_LOOP M_PROTO4
610 #define M_AUTHIPDGM M_PROTO5
611
612 #ifdef _KERNEL
613 struct cmsghdr;
614
615 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
616 int in6_localaddr __P((struct in6_addr *));
617 int in6_addrscope __P((struct in6_addr *));
618 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
619 extern void in6_if_up __P((struct ifnet *));
620 struct sockaddr;
621 extern u_char ip6_protox[];
622
623 void in6_sin6_2_sin __P((struct sockaddr_in *sin,
624 struct sockaddr_in6 *sin6));
625 void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
626 struct sockaddr_in6 *sin6));
627 void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
628 void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
629 extern void addrsel_policy_init __P((void));
630
631 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
632 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
633 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
634
635 extern int (*faithprefix_p)(struct in6_addr *);
636 #endif /* _KERNEL */
637
638 #ifndef _SIZE_T_DECLARED
639 typedef __size_t size_t;
640 #define _SIZE_T_DECLARED
641 #endif
642
643 #ifndef _SOCKLEN_T_DECLARED
644 typedef __socklen_t socklen_t;
645 #define _SOCKLEN_T_DECLARED
646 #endif
647
648 #if __BSD_VISIBLE
649
650 __BEGIN_DECLS
651 struct cmsghdr;
652
653 extern int inet6_option_space __P((int));
654 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
655 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *,
656 int, int));
657 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
658 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **));
659 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int));
660
661 extern size_t inet6_rthdr_space __P((int, int));
662 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
663 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
664 unsigned int));
665 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
666 #if 0 /* not implemented yet */
667 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
668 #endif
669 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
670 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
671 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
672
673 extern int inet6_opt_init __P((void *, socklen_t));
674 extern int inet6_opt_append __P((void *, socklen_t, int, uint8_t, socklen_t,
675 uint8_t, void **));
676 extern int inet6_opt_finish __P((void *, socklen_t, int));
677 extern int inet6_opt_set_val __P((void *, int, void *, socklen_t));
678
679 extern int inet6_opt_next __P((void *, socklen_t, int, uint8_t *, socklen_t *,
680 void **));
681 extern int inet6_opt_find __P((void *, socklen_t, int, uint8_t, socklen_t *,
682 void **));
683 extern int inet6_opt_get_val __P((void *, int, void *, socklen_t));
684 extern socklen_t inet6_rth_space __P((int, int));
685 extern void *inet6_rth_init __P((void *, socklen_t, int, int));
686 extern int inet6_rth_add __P((void *, const struct in6_addr *));
687 extern int inet6_rth_reverse __P((const void *, void *));
688 extern int inet6_rth_segments __P((const void *));
689 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
690 __END_DECLS
691
692 #endif /* __BSD_VISIBLE */
693
694 #endif /* !_NETINET6_IN6_H_ */
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