FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6.h
1 /* $FreeBSD: releng/5.2/sys/netinet6/in6.h 122128 2003-11-05 17:19:31Z ume $ */
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_INTFACELOCAL_ALLNODES_INIT \
222 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
223 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
224 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
225 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
226 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
227 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
228 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
229 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
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_INTFACELOCAL 0x01
307 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
308 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
309 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
310 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
311 #else
312 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
313 #define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
314 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
315 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
316 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
317 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
318 #endif
319
320 /*
321 * Unicast Scope
322 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
323 */
324 #define IN6_IS_ADDR_LINKLOCAL(a) \
325 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
326 #define IN6_IS_ADDR_SITELOCAL(a) \
327 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
328
329 /*
330 * Multicast
331 */
332 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
333
334 #ifdef _KERNEL /* XXX nonstandard */
335 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
336 #else
337 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
338 #endif
339
340 /*
341 * Multicast Scope
342 */
343 #ifdef _KERNEL /* refers nonstandard items */
344 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
345 (IN6_IS_ADDR_MULTICAST(a) && \
346 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
347 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
348 (IN6_IS_ADDR_MULTICAST(a) && \
349 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
350 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
351 (IN6_IS_ADDR_MULTICAST(a) && \
352 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
353 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
354 (IN6_IS_ADDR_MULTICAST(a) && \
355 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
356 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
357 (IN6_IS_ADDR_MULTICAST(a) && \
358 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
359 #define IN6_IS_ADDR_MC_GLOBAL(a) \
360 (IN6_IS_ADDR_MULTICAST(a) && \
361 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
362 #else
363 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
364 (IN6_IS_ADDR_MULTICAST(a) && \
365 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
366 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
367 (IN6_IS_ADDR_MULTICAST(a) && \
368 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
369 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
370 (IN6_IS_ADDR_MULTICAST(a) && \
371 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
372 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
373 (IN6_IS_ADDR_MULTICAST(a) && \
374 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
375 #define IN6_IS_ADDR_MC_GLOBAL(a) \
376 (IN6_IS_ADDR_MULTICAST(a) && \
377 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
378 #endif
379
380 #ifdef _KERNEL /* nonstandard */
381 /*
382 * KAME Scope
383 */
384 #define IN6_IS_SCOPE_LINKLOCAL(a) \
385 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
386 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
387
388 #define IFA6_IS_DEPRECATED(a) \
389 ((a)->ia6_lifetime.ia6t_preferred != 0 && \
390 (a)->ia6_lifetime.ia6t_preferred < time_second)
391 #define IFA6_IS_INVALID(a) \
392 ((a)->ia6_lifetime.ia6t_expire != 0 && \
393 (a)->ia6_lifetime.ia6t_expire < time_second)
394 #endif /* _KERNEL */
395
396 /*
397 * IP6 route structure
398 */
399 #if __BSD_VISIBLE
400 struct route_in6 {
401 struct rtentry *ro_rt;
402 struct sockaddr_in6 ro_dst;
403 };
404 #endif
405
406 /*
407 * Options for use with [gs]etsockopt at the IPV6 level.
408 * First word of comment is data type; bool is stored in int.
409 */
410 /* no hdrincl */
411 #if 0 /* the followings are relic in IPv4 and hence are disabled */
412 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
413 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
414 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
415 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
416 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
417 #endif
418 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
419 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
420 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
421 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
422 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
423 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
424 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
425 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
426 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
427 /* RFC2292 options */
428 #ifdef _KERNEL
429 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
430 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
431 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
432 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
433 #define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
434 #define IPV6_2292RTHDR 24 /* bool; routing header */
435 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
436 #endif
437
438 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
439 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
440 #ifndef _KERNEL
441 #define IPV6_BINDV6ONLY IPV6_V6ONLY
442 #endif
443
444 #if 1 /* IPSEC */
445 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
446 #endif
447 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
448
449 #if 1 /* IPV6FIREWALL */
450 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
451 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
452 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
453 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
454 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
455 #endif
456
457 /* new socket options introduced in RFC2292bis */
458 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
459
460 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
461 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
462 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */
463 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
464 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
465 #ifdef _KERNEL
466 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
467 #endif
468
469 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
470 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
471
472 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
473 4 bytes int; MTU notification (cmsg) */
474 #if 0 /*obsoleted during 2292bis -> 3542*/
475 #define IPV6_REACHCONF 45 /* no data; ND reachability confirm
476 (cmsg only/not in of RFC3542) */
477 #endif
478
479 /* more new socket options introduced in RFC2292bis */
480 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
481 #define IPV6_HOPLIMIT 47 /* int; send hop limit */
482 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
483 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
484 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
485 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
486 #if 0
487 #define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options */
488 /* obsoleted by 2292bis */
489 #endif
490
491 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
492
493 #define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
494
495 #define IPV6_TCLASS 61 /* int; send traffic class value */
496 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
497
498 #define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
499 * the source address.
500 */
501
502 /* to define items, should talk with KAME guys first, for *BSD compatibility */
503
504 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
505 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
506 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
507
508 /*
509 * Defaults and limits for options
510 */
511 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
512 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
513
514 /*
515 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
516 */
517 struct ipv6_mreq {
518 struct in6_addr ipv6mr_multiaddr;
519 unsigned int ipv6mr_interface;
520 };
521
522 /*
523 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
524 */
525 struct in6_pktinfo {
526 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
527 unsigned int ipi6_ifindex; /* send/recv interface index */
528 };
529
530 /*
531 * Control structure for IPV6_RECVPATHMTU socket option.
532 */
533 struct ip6_mtuinfo {
534 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
535 uint32_t ip6m_mtu;
536 };
537
538 /*
539 * Argument for IPV6_PORTRANGE:
540 * - which range to search when port is unspecified at bind() or connect()
541 */
542 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
543 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
544 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
545
546 #if __BSD_VISIBLE
547 /*
548 * Definitions for inet6 sysctl operations.
549 *
550 * Third level is protocol number.
551 * Fourth level is desired variable within that protocol.
552 */
553 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
554
555 /*
556 * Names for IP sysctl objects
557 */
558 #define IPV6CTL_FORWARDING 1 /* act as router */
559 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
560 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
561 #ifdef notyet
562 #define IPV6CTL_DEFMTU 4 /* default MTU */
563 #endif
564 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
565 #define IPV6CTL_STATS 6 /* stats */
566 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
567 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
568 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
569 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
570 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
571 #define IPV6CTL_ACCEPT_RTADV 12
572 #define IPV6CTL_KEEPFAITH 13
573 #define IPV6CTL_LOG_INTERVAL 14
574 #define IPV6CTL_HDRNESTLIMIT 15
575 #define IPV6CTL_DAD_COUNT 16
576 #define IPV6CTL_AUTO_FLOWLABEL 17
577 #define IPV6CTL_DEFMCASTHLIM 18
578 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
579 #define IPV6CTL_KAME_VERSION 20
580 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
581 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
582 #if 0 /* obsolete */
583 #define IPV6CTL_MAPPED_ADDR 23
584 #endif
585 #define IPV6CTL_V6ONLY 24
586 #define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
587 #define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
588 #define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
589
590 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
591 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
592 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
593 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
594 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
595 #define IPV6CTL_PREFER_TEMPADDR 37 /* prefer temporary addr as src */
596 #define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
597
598 #define IPV6CTL_MAXFRAGS 41 /* max fragments */
599
600 /* New entries should be added here from current IPV6CTL_MAXID value. */
601 /* to define items, should talk with KAME guys first, for *BSD compatibility */
602 #define IPV6CTL_MAXID 42
603 #endif /* __BSD_VISIBLE */
604
605 /*
606 * Redefinition of mbuf flags
607 */
608 #define M_AUTHIPHDR M_PROTO2
609 #define M_DECRYPTED M_PROTO3
610 #define M_LOOP M_PROTO4
611 #define M_AUTHIPDGM M_PROTO5
612
613 #ifdef _KERNEL
614 struct cmsghdr;
615
616 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
617 int in6_localaddr __P((struct in6_addr *));
618 int in6_addrscope __P((struct in6_addr *));
619 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
620 extern void in6_if_up __P((struct ifnet *));
621 struct sockaddr;
622 extern u_char ip6_protox[];
623
624 void in6_sin6_2_sin __P((struct sockaddr_in *sin,
625 struct sockaddr_in6 *sin6));
626 void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
627 struct sockaddr_in6 *sin6));
628 void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
629 void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
630 extern void addrsel_policy_init __P((void));
631
632 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
633 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
634 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
635
636 extern int (*faithprefix_p)(struct in6_addr *);
637 #endif /* _KERNEL */
638
639 #ifndef _SIZE_T_DECLARED
640 typedef __size_t size_t;
641 #define _SIZE_T_DECLARED
642 #endif
643
644 #ifndef _SOCKLEN_T_DECLARED
645 typedef __socklen_t socklen_t;
646 #define _SOCKLEN_T_DECLARED
647 #endif
648
649 #if __BSD_VISIBLE
650
651 __BEGIN_DECLS
652 struct cmsghdr;
653
654 extern int inet6_option_space __P((int));
655 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
656 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *,
657 int, int));
658 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
659 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **));
660 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int));
661
662 extern size_t inet6_rthdr_space __P((int, int));
663 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
664 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
665 unsigned int));
666 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
667 #if 0 /* not implemented yet */
668 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
669 #endif
670 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
671 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
672 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
673
674 extern int inet6_opt_init __P((void *, socklen_t));
675 extern int inet6_opt_append __P((void *, socklen_t, int, uint8_t, socklen_t,
676 uint8_t, void **));
677 extern int inet6_opt_finish __P((void *, socklen_t, int));
678 extern int inet6_opt_set_val __P((void *, int, void *, socklen_t));
679
680 extern int inet6_opt_next __P((void *, socklen_t, int, uint8_t *, socklen_t *,
681 void **));
682 extern int inet6_opt_find __P((void *, socklen_t, int, uint8_t, socklen_t *,
683 void **));
684 extern int inet6_opt_get_val __P((void *, int, void *, socklen_t));
685 extern socklen_t inet6_rth_space __P((int, int));
686 extern void *inet6_rth_init __P((void *, socklen_t, int, int));
687 extern int inet6_rth_add __P((void *, const struct in6_addr *));
688 extern int inet6_rth_reverse __P((const void *, void *));
689 extern int inet6_rth_segments __P((const void *));
690 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
691 __END_DECLS
692
693 #endif /* __BSD_VISIBLE */
694
695 #endif /* !_NETINET6_IN6_H_ */
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