1/*
2 * Copyright (c) 2008-2013 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29/*
30 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 *    notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 *    notice, this list of conditions and the following disclaimer in the
40 *    documentation and/or other materials provided with the distribution.
41 * 3. Neither the name of the project nor the names of its contributors
42 *    may be used to endorse or promote products derived from this software
43 *    without specific prior written permission.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 */
57
58/*
59 * Copyright (c) 1982, 1986, 1990, 1993
60 *	The Regents of the University of California.  All rights reserved.
61 *
62 * Redistribution and use in source and binary forms, with or without
63 * modification, are permitted provided that the following conditions
64 * are met:
65 * 1. Redistributions of source code must retain the above copyright
66 *    notice, this list of conditions and the following disclaimer.
67 * 2. Redistributions in binary form must reproduce the above copyright
68 *    notice, this list of conditions and the following disclaimer in the
69 *    documentation and/or other materials provided with the distribution.
70 * 3. All advertising materials mentioning features or use of this software
71 *    must display the following acknowledgement:
72 *	This product includes software developed by the University of
73 *	California, Berkeley and its contributors.
74 * 4. Neither the name of the University nor the names of its contributors
75 *    may be used to endorse or promote products derived from this software
76 *    without specific prior written permission.
77 *
78 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
79 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
80 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
81 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
82 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
83 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
84 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
85 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
86 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
87 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
88 * SUCH DAMAGE.
89 *
90 *	@(#)in.h	8.3 (Berkeley) 1/3/94
91 */
92
93#ifndef __KAME_NETINET_IN_H_INCLUDED_
94#error "do not include netinet6/in6.h directly, include netinet/in.h. " \
95	" see RFC2553"
96#endif
97
98#ifndef _NETINET6_IN6_H_
99#define	_NETINET6_IN6_H_
100#include <sys/appleapiopts.h>
101#include <sys/_types.h>
102
103#include <sys/_types/_sa_family_t.h>
104
105/*
106 * Identification of the network protocol stack
107 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
108 * has the table of implementation/integration differences.
109 */
110#define	__KAME__
111#define	__KAME_VERSION		"2009/apple-darwin"
112
113#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
114/*
115 * Local port number conventions:
116 *
117 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
118 * unless a kernel is compiled with IPNOPRIVPORTS defined.
119 *
120 * When a user does a bind(2) or connect(2) with a port number of zero,
121 * a non-conflicting local port address is chosen.
122 *
123 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
124 * that is settable by sysctl(3); net.inet.ip.anonportmin and
125 * net.inet.ip.anonportmax respectively.
126 *
127 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
128 * default assignment range.
129 *
130 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
131 *
132 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
133 * and exists only for FreeBSD compatibility purposes.
134 *
135 * The value IP_PORTRANGE_LOW changes the range to the "low" are
136 * that is (by convention) restricted to privileged processes.
137 * This convention is based on "vouchsafe" principles only.
138 * It is only secure if you trust the remote host to restrict these ports.
139 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
140 */
141
142#define	IPV6PORT_RESERVED	1024
143#define	IPV6PORT_ANONMIN	49152
144#define	IPV6PORT_ANONMAX	65535
145#define	IPV6PORT_RESERVEDMIN	600
146#define	IPV6PORT_RESERVEDMAX	(IPV6PORT_RESERVED-1)
147#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
148
149/*
150 * IPv6 address
151 */
152struct in6_addr {
153	union {
154		__uint8_t   __u6_addr8[16];
155		__uint16_t  __u6_addr16[8];
156		__uint32_t  __u6_addr32[4];
157	} __u6_addr;			/* 128-bit IP6 address */
158};
159
160#define	s6_addr   __u6_addr.__u6_addr8
161#ifdef KERNEL	/* XXX nonstandard */
162#define	s6_addr8  __u6_addr.__u6_addr8
163#define	s6_addr16 __u6_addr.__u6_addr16
164#define	s6_addr32 __u6_addr.__u6_addr32
165#endif
166
167#define	INET6_ADDRSTRLEN	46
168
169/*
170 * Socket address for IPv6
171 */
172#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
173#define	SIN6_LEN
174#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
175struct sockaddr_in6 {
176	__uint8_t	sin6_len;	/* length of this struct(sa_family_t) */
177	sa_family_t	sin6_family;	/* AF_INET6 (sa_family_t) */
178	in_port_t	sin6_port;	/* Transport layer port # (in_port_t) */
179	__uint32_t	sin6_flowinfo;	/* IP6 flow information */
180	struct in6_addr	sin6_addr;	/* IP6 address */
181	__uint32_t	sin6_scope_id;	/* scope zone index */
182};
183
184#ifdef KERNEL	/* XXX nonstandard */
185/*
186 * Local definition for masks
187 */
188#define	IN6MASK0	{{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
189#define	IN6MASK7	{{{ 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
190			    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
191#define	IN6MASK16	{{{ 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
192			    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
193#define	IN6MASK32	{{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
194			    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
195#define	IN6MASK64	{{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
196			    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
197#define	IN6MASK96	{{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
198			    0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
199#define	IN6MASK128	{{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
200			    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
201#endif
202
203#ifdef KERNEL_PRIVATE
204extern const struct sockaddr_in6 sa6_any;
205
206extern const struct in6_addr in6mask0;
207extern const struct in6_addr in6mask7;
208extern const struct in6_addr in6mask16;
209extern const struct in6_addr in6mask32;
210extern const struct in6_addr in6mask64;
211extern const struct in6_addr in6mask96;
212extern const struct in6_addr in6mask128;
213
214#define	SIN6(s)		((struct sockaddr_in6 *)(void *)s)
215#define	satosin6(sa)	SIN6(sa)
216#define	sin6tosa(sin6)	((struct sockaddr *)(void *)(sin6))
217#define	SIN6IFSCOPE(s)	SIN6(s)
218#endif /* KERNEL_PRIVATE */
219
220#ifdef KERNEL	/* XXX nonstandard */
221/*
222 * Macros started with IPV6_ADDR is KAME local
223 */
224#if BYTE_ORDER == BIG_ENDIAN
225#define	IPV6_ADDR_INT32_ONE	1
226#define	IPV6_ADDR_INT32_TWO	2
227#define	IPV6_ADDR_INT32_MNL	0xff010000
228#define	IPV6_ADDR_INT32_MLL	0xff020000
229#define	IPV6_ADDR_INT32_SMP	0x0000ffff
230#define	IPV6_ADDR_INT16_ULL	0xfe80
231#define	IPV6_ADDR_INT16_USL	0xfec0
232#define	IPV6_ADDR_INT16_MLL	0xff02
233#elif BYTE_ORDER == LITTLE_ENDIAN
234#define	IPV6_ADDR_INT32_ONE	0x01000000
235#define	IPV6_ADDR_INT32_TWO	0x02000000
236#define	IPV6_ADDR_INT32_MNL	0x000001ff
237#define	IPV6_ADDR_INT32_MLL	0x000002ff
238#define	IPV6_ADDR_INT32_SMP	0xffff0000
239#define	IPV6_ADDR_INT16_ULL	0x80fe
240#define	IPV6_ADDR_INT16_USL	0xc0fe
241#define	IPV6_ADDR_INT16_MLL	0x02ff
242#endif
243#endif
244
245/*
246 * Definition of some useful macros to handle IP6 addresses
247 */
248#define	IN6ADDR_ANY_INIT \
249	{{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
250	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
251#define	IN6ADDR_LOOPBACK_INIT \
252	{{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
253	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
254#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
255#define	IN6ADDR_NODELOCAL_ALLNODES_INIT \
256	{{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
257	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
258#define	IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
259	{{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
260	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
261#define	IN6ADDR_LINKLOCAL_ALLNODES_INIT \
262	{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
263	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
264#define	IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
265	{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
266	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
267#define	IN6ADDR_LINKLOCAL_ALLV2ROUTERS_INIT \
268	{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
269	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16 }}}
270#define	IN6ADDR_V4MAPPED_INIT \
271	{{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
272	    0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
273#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
274
275extern const struct in6_addr in6addr_any;
276extern const struct in6_addr in6addr_loopback;
277#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
278extern const struct in6_addr in6addr_nodelocal_allnodes;
279extern const struct in6_addr in6addr_linklocal_allnodes;
280extern const struct in6_addr in6addr_linklocal_allrouters;
281extern const struct in6_addr in6addr_linklocal_allv2routers;
282#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
283
284/*
285 * Equality
286 * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
287 * does not supply memcmp().  For userland memcmp() is preferred as it is
288 * in ANSI standard.
289 */
290#ifdef KERNEL
291#define	IN6_ARE_ADDR_EQUAL(a, b) \
292	(bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], \
293	sizeof (struct in6_addr)) == 0)
294#else
295#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
296#define	IN6_ARE_ADDR_EQUAL(a, b) \
297	(memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof (struct in6_addr)) \
298	== 0)
299#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
300#endif
301
302#ifdef KERNEL			/* non standard */
303/* see if two addresses are equal in a scope-conscious manner. */
304#define	SA6_ARE_ADDR_EQUAL(a, b) \
305	(((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
306	((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
307	(bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof (struct in6_addr)) == 0))
308#endif
309
310/*
311 * Unspecified
312 */
313#define	IN6_IS_ADDR_UNSPECIFIED(a)	\
314	((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
315	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
316	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
317	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
318
319/*
320 * Loopback
321 */
322#define	IN6_IS_ADDR_LOOPBACK(a)		\
323	((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
324	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
325	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
326	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
327
328/*
329 * IPv4 compatible
330 */
331#define	IN6_IS_ADDR_V4COMPAT(a)		\
332	((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
333	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
334	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
335	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
336	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
337
338/*
339 * Mapped
340 */
341#define	IN6_IS_ADDR_V4MAPPED(a)		      \
342	((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
343	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
344	(*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == \
345	ntohl(0x0000ffff)))
346
347/*
348 * 6to4
349 */
350#define	IN6_IS_ADDR_6TO4(x)	(ntohs((x)->s6_addr16[0]) == 0x2002)
351
352/*
353 * KAME Scope Values
354 */
355
356#ifdef KERNEL	/* XXX nonstandard */
357#define	IPV6_ADDR_SCOPE_NODELOCAL	0x01
358#define	IPV6_ADDR_SCOPE_INTFACELOCAL	0x01
359#define	IPV6_ADDR_SCOPE_LINKLOCAL	0x02
360#define	IPV6_ADDR_SCOPE_SITELOCAL	0x05
361#define	IPV6_ADDR_SCOPE_ORGLOCAL	0x08	/* just used in this file */
362#define	IPV6_ADDR_SCOPE_GLOBAL		0x0e
363#else
364#define	__IPV6_ADDR_SCOPE_NODELOCAL	0x01
365#define	__IPV6_ADDR_SCOPE_INTFACELOCAL	0x01
366#define	__IPV6_ADDR_SCOPE_LINKLOCAL	0x02
367#define	__IPV6_ADDR_SCOPE_SITELOCAL	0x05
368#define	__IPV6_ADDR_SCOPE_ORGLOCAL	0x08	/* just used in this file */
369#define	__IPV6_ADDR_SCOPE_GLOBAL	0x0e
370#endif
371
372/*
373 * Unicast Scope
374 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
375 */
376#define	IN6_IS_ADDR_LINKLOCAL(a)	\
377	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
378#define	IN6_IS_ADDR_SITELOCAL(a)	\
379	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
380
381/*
382 * Multicast
383 */
384#define	IN6_IS_ADDR_MULTICAST(a)	((a)->s6_addr[0] == 0xff)
385
386/*
387 * Unique Local IPv6 Unicast Addresses (per RFC 4193)
388 */
389#define	IN6_IS_ADDR_UNIQUE_LOCAL(a) \
390	(((a)->s6_addr[0] == 0xfc) || ((a)->s6_addr[0] == 0xfd))
391
392#ifdef KERNEL	/* XXX nonstandard */
393#define	IPV6_ADDR_MC_SCOPE(a)		((a)->s6_addr[1] & 0x0f)
394#else
395#define	__IPV6_ADDR_MC_SCOPE(a)		((a)->s6_addr[1] & 0x0f)
396#endif
397
398/*
399 * Multicast Scope
400 */
401#ifdef KERNEL	/* refers nonstandard items */
402#define	IN6_IS_ADDR_MC_NODELOCAL(a)	\
403	(IN6_IS_ADDR_MULTICAST(a) &&	\
404	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
405#define	IN6_IS_ADDR_MC_INTFACELOCAL(a)	\
406	(IN6_IS_ADDR_MULTICAST(a) &&	\
407	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
408#define	IN6_IS_ADDR_MC_LINKLOCAL(a)	\
409	(IN6_IS_ADDR_MULTICAST(a) &&	\
410	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
411#define	IN6_IS_ADDR_MC_SITELOCAL(a)	\
412	(IN6_IS_ADDR_MULTICAST(a) && 	\
413	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
414#define	IN6_IS_ADDR_MC_ORGLOCAL(a)	\
415	(IN6_IS_ADDR_MULTICAST(a) &&	\
416	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
417#define	IN6_IS_ADDR_MC_GLOBAL(a)	\
418	(IN6_IS_ADDR_MULTICAST(a) &&	\
419	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
420#else
421#define	IN6_IS_ADDR_MC_NODELOCAL(a)	\
422	(IN6_IS_ADDR_MULTICAST(a) &&	\
423	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
424#define	IN6_IS_ADDR_MC_LINKLOCAL(a)	\
425	(IN6_IS_ADDR_MULTICAST(a) &&	\
426	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
427#define	IN6_IS_ADDR_MC_SITELOCAL(a)	\
428	(IN6_IS_ADDR_MULTICAST(a) && 	\
429	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
430#define	IN6_IS_ADDR_MC_ORGLOCAL(a)	\
431	(IN6_IS_ADDR_MULTICAST(a) &&	\
432	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
433#define	IN6_IS_ADDR_MC_GLOBAL(a)	\
434	(IN6_IS_ADDR_MULTICAST(a) &&	\
435	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
436#endif
437
438#ifdef KERNEL	/* nonstandard */
439/*
440 * KAME Scope
441 */
442#define	IN6_IS_SCOPE_LINKLOCAL(a)	\
443	((IN6_IS_ADDR_LINKLOCAL(a)) ||	\
444	(IN6_IS_ADDR_MC_LINKLOCAL(a)))
445
446#define	IN6_IS_SCOPE_EMBED(a)			\
447	((IN6_IS_ADDR_LINKLOCAL(a)) ||		\
448	(IN6_IS_ADDR_MC_LINKLOCAL(a)) ||	\
449	(IN6_IS_ADDR_MC_INTFACELOCAL(a)))
450
451#define	IFA6_IS_DEPRECATED(a, t) \
452	((a)->ia6_lifetime.ia6ti_preferred != 0 && \
453	(a)->ia6_lifetime.ia6ti_preferred < (t))
454#define	IFA6_IS_INVALID(a, t) \
455	((a)->ia6_lifetime.ia6ti_expire != 0 && \
456	(a)->ia6_lifetime.ia6ti_expire < (t))
457#endif /* KERNEL */
458
459#ifdef PRIVATE
460struct route_in6_old {
461	void		*ro_rt;
462	uint32_t	ro_flags;
463	struct sockaddr_in6 ro_dst;
464};
465#endif /* PRIVATE */
466
467#ifdef BSD_KERNEL_PRIVATE
468/*
469 * IP6 route structure
470 *
471 * A route consists of a destination address and a reference
472 * to a routing entry.  These are often held by protocols
473 * in their control blocks, e.g. inpcb.
474 */
475struct route_in6 {
476	/*
477	 * N.B: struct route_in6 must begin with ro_{rt,srcia,flags}
478	 * because the code does some casts of a 'struct route_in6 *'
479	 * to a 'struct route *'.
480	 */
481	struct rtentry	*ro_rt;
482	struct ifaddr	*ro_srcia;
483	uint32_t	ro_flags;	/* route flags */
484	struct sockaddr_in6 ro_dst;
485};
486#endif /* BSD_KERNEL_PRIVATE */
487
488/*
489 * Options for use with [gs]etsockopt at the IPV6 level.
490 * First word of comment is data type; bool is stored in int.
491 */
492/* no hdrincl */
493#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
494/*
495 * RFC 3542 define the following socket options in a manner incompatible
496 * with RFC 2292:
497 *   IPV6_PKTINFO
498 *   IPV6_HOPLIMIT
499 *   IPV6_NEXTHOP
500 *   IPV6_HOPOPTS
501 *   IPV6_DSTOPTS
502 *   IPV6_RTHDR
503 *
504 * To use the new IPv6 Sockets options introduced by RFC 3542
505 * the constant __APPLE_USE_RFC_3542 must be defined before
506 * including <netinet/in.h>
507 *
508 * To use the old IPv6 Sockets options from RFC 2292
509 * the constant __APPLE_USE_RFC_2292 must be defined before
510 * including <netinet/in.h>
511 *
512 * Note that eventually RFC 3542 is going to be the
513 * default and RFC 2292 will be obsolete.
514 */
515#ifdef BSD_KERNEL_PRIVATE
516#define	__APPLE_USE_RFC_3542 1
517#endif /* BSD_KERNEL_PRIVATE */
518
519#if defined(__APPLE_USE_RFC_3542) && defined(__APPLE_USE_RFC_2292)
520#error "__APPLE_USE_RFC_3542 and __APPLE_USE_RFC_2292 cannot be both defined"
521#endif
522
523#if 0 /* the followings are relic in IPv4 and hence are disabled */
524#define	IPV6_OPTIONS		1  /* buf/ip6_opts; set/get IP6 options */
525#define	IPV6_RECVOPTS		5  /* bool; receive all IP6 opts w/dgram */
526#define	IPV6_RECVRETOPTS	6  /* bool; receive IP6 opts for response */
527#define	IPV6_RECVDSTADDR	7  /* bool; receive IP6 dst addr w/dgram */
528#define	IPV6_RETOPTS		8  /* ip6_opts; set/get IP6 options */
529#endif /* 0 */
530#define	IPV6_SOCKOPT_RESERVED1	3  /* reserved for future use */
531#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
532#define	IPV6_UNICAST_HOPS	4  /* int; IP6 hops */
533#define	IPV6_MULTICAST_IF	9  /* __uint8_t; set/get IP6 multicast i/f  */
534#define	IPV6_MULTICAST_HOPS	10 /* __uint8_t; set/get IP6 multicast hops */
535#define	IPV6_MULTICAST_LOOP	11 /* __uint8_t; set/get IP6 mcast loopback */
536#define	IPV6_JOIN_GROUP		12 /* ip6_mreq; join a group membership */
537#define	IPV6_LEAVE_GROUP	13 /* ip6_mreq; leave a group membership */
538
539#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
540#define	IPV6_PORTRANGE		14 /* int; range to choose for unspec port */
541#define	ICMP6_FILTER		18 /* icmp6_filter; icmp6 filter */
542#define	IPV6_2292PKTINFO	19 /* bool; send/recv if, src/dst addr */
543#define	IPV6_2292HOPLIMIT	20 /* bool; hop limit */
544#define	IPV6_2292NEXTHOP	21 /* bool; next hop addr */
545#define	IPV6_2292HOPOPTS	22 /* bool; hop-by-hop option */
546#define	IPV6_2292DSTOPTS	23 /* bool; destinaion option */
547#define	IPV6_2292RTHDR		24 /* ip6_rthdr: routing header */
548
549/* buf/cmsghdr; set/get IPv6 options [obsoleted by RFC3542] */
550#define	IPV6_2292PKTOPTIONS	25
551
552#ifdef __APPLE_USE_RFC_2292
553#define	IPV6_PKTINFO	IPV6_2292PKTINFO
554#define	IPV6_HOPLIMIT	IPV6_2292HOPLIMIT
555#define	IPV6_NEXTHOP	IPV6_2292NEXTHOP
556#define	IPV6_HOPOPTS	IPV6_2292HOPOPTS
557#define	IPV6_DSTOPTS	IPV6_2292DSTOPTS
558#define	IPV6_RTHDR	IPV6_2292RTHDR
559#define	IPV6_PKTOPTIONS	IPV6_2292PKTOPTIONS
560#endif /* __APPLE_USE_RFC_2292 */
561
562#define	IPV6_CHECKSUM		26 /* int; checksum offset for raw socket */
563#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
564#define	IPV6_V6ONLY		27 /* bool; only bind INET6 at wildcard bind */
565#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
566#ifndef KERNEL
567#define	IPV6_BINDV6ONLY		IPV6_V6ONLY
568#endif /* KERNEL */
569
570
571#if 1 /* IPSEC */
572#define	IPV6_IPSEC_POLICY	28 /* struct; get/set security policy */
573#endif /* 1 */
574#define	IPV6_FAITH		29 /* deprecated */
575
576#if 1 /* IPV6FIREWALL */
577#define	IPV6_FW_ADD		30 /* add a firewall rule to chain */
578#define	IPV6_FW_DEL		31 /* delete a firewall rule from chain */
579#define	IPV6_FW_FLUSH		32 /* flush firewall rule chain */
580#define	IPV6_FW_ZERO		33 /* clear single/all firewall counter(s) */
581#define	IPV6_FW_GET		34 /* get entire firewall rule chain */
582#endif /* 1 */
583
584/*
585 * APPLE: NOTE the value of those 2 options is kept unchanged from
586 *   previous version of darwin/OS X for binary compatibility reasons
587 *   and differ from FreeBSD (values 57 and 61). See below.
588 */
589#define	IPV6_RECVTCLASS		35 /* bool; recv traffic class values */
590#define	IPV6_TCLASS		36 /* int; send traffic class value */
591
592#ifdef __APPLE_USE_RFC_3542
593/* new socket options introduced in RFC3542 */
594/*
595 * ip6_dest; send dst option before rthdr
596 * APPLE: Value purposely different than FreeBSD (35) to avoid
597 * collision with definition of IPV6_RECVTCLASS in previous
598 * darwin implementations
599 */
600#define	IPV6_RTHDRDSTOPTS	57
601
602/*
603 * bool; recv if, dst addr
604 * APPLE: Value purposely different than FreeBSD(36) to avoid
605 * collision with definition of IPV6_TCLASS in previous
606 * darwin implementations
607 */
608#define	IPV6_RECVPKTINFO	61
609
610#define	IPV6_RECVHOPLIMIT	37 /* bool; recv hop limit */
611#define	IPV6_RECVRTHDR		38 /* bool; recv routing header */
612#define	IPV6_RECVHOPOPTS	39 /* bool; recv hop-by-hop option */
613#define	IPV6_RECVDSTOPTS	40 /* bool; recv dst option after rthdr */
614#ifdef KERNEL
615#define	IPV6_RECVRTHDRDSTOPTS	41 /* bool; recv dst option before rthdr */
616#endif
617
618#define	IPV6_USE_MIN_MTU	42 /* bool; send packets at the minimum MTU */
619#define	IPV6_RECVPATHMTU	43 /* bool; notify an according MTU */
620
621/*
622 * mtuinfo; get the current path MTU (sopt), 4 bytes int;
623 * MTU notification (cmsg)
624 */
625#define	IPV6_PATHMTU		44
626
627#if 0 /* obsoleted during 2292bis -> 3542 */
628/* no data; ND reachability confirm (cmsg only/not in of RFC3542) */
629#define	IPV6_REACHCONF		45
630#endif
631/* more new socket options introduced in RFC3542 */
632#define	IPV6_3542PKTINFO	46 /* in6_pktinfo; send if, src addr */
633#define	IPV6_3542HOPLIMIT	47 /* int; send hop limit */
634#define	IPV6_3542NEXTHOP	48 /* sockaddr; next hop addr */
635#define	IPV6_3542HOPOPTS	49 /* ip6_hbh; send hop-by-hop option */
636#define	IPV6_3542DSTOPTS	50 /* ip6_dest; send dst option befor rthdr */
637#define	IPV6_3542RTHDR		51 /* ip6_rthdr; send routing header */
638
639#define	IPV6_PKTINFO	IPV6_3542PKTINFO
640#define	IPV6_HOPLIMIT	IPV6_3542HOPLIMIT
641#define	IPV6_NEXTHOP	IPV6_3542NEXTHOP
642#define	IPV6_HOPOPTS	IPV6_3542HOPOPTS
643#define	IPV6_DSTOPTS	IPV6_3542DSTOPTS
644#define	IPV6_RTHDR	IPV6_3542RTHDR
645
646#define	IPV6_AUTOFLOWLABEL	59 /* bool; attach flowlabel automagically */
647
648#define	IPV6_DONTFRAG		62 /* bool; disable IPv6 fragmentation */
649
650/* int; prefer temporary addresses as the source address. */
651#define	IPV6_PREFER_TEMPADDR	63
652
653/*
654 * The following option is private; do not use it from user applications.
655 * It is deliberately defined to the same value as IP_MSFILTER.
656 */
657#define	IPV6_MSFILTER		74 /* struct __msfilterreq; */
658#endif /* __APPLE_USE_RFC_3542 */
659
660#define	IPV6_BOUND_IF		125 /* int; set/get bound interface */
661
662#ifdef PRIVATE
663#define	IPV6_NO_IFT_CELLULAR	6969 /* for internal use only */
664#define	IPV6_OUT_IF		9696 /* for internal use only */
665#endif /* PRIVATE */
666
667/* to define items, should talk with KAME guys first, for *BSD compatibility */
668
669#define	IPV6_RTHDR_LOOSE	0 /* this hop need not be a neighbor. */
670#define	IPV6_RTHDR_STRICT	1 /* this hop must be a neighbor. */
671#define	IPV6_RTHDR_TYPE_0	0 /* IPv6 routing header type 0 */
672
673/*
674 * Defaults and limits for options
675 */
676#define	IPV6_DEFAULT_MULTICAST_HOPS 1	/* normally limit m'casts to 1 hop  */
677#define	IPV6_DEFAULT_MULTICAST_LOOP 1	/* normally hear sends if a member  */
678
679/*
680 * The im6o_membership vector for each socket is now dynamically allocated at
681 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized
682 * according to a power-of-two increment.
683 */
684#define	IPV6_MIN_MEMBERSHIPS	31
685#define	IPV6_MAX_MEMBERSHIPS	4095
686
687/*
688 * Default resource limits for IPv6 multicast source filtering.
689 * These may be modified by sysctl.
690 */
691#define	IPV6_MAX_GROUP_SRC_FILTER	512	/* sources per group */
692#define	IPV6_MAX_SOCK_SRC_FILTER	128	/* sources per socket/group */
693
694/*
695 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
696 */
697struct ipv6_mreq {
698	struct in6_addr	ipv6mr_multiaddr;
699	unsigned int	ipv6mr_interface;
700};
701
702/*
703 * IPV6_2292PKTINFO: Packet information(RFC2292 sec 5)
704 */
705struct in6_pktinfo {
706	struct in6_addr	ipi6_addr;	/* src/dst IPv6 address */
707	unsigned int	ipi6_ifindex;	/* send/recv interface index */
708};
709
710/*
711 * Control structure for IPV6_RECVPATHMTU socket option.
712 */
713struct ip6_mtuinfo {
714	struct sockaddr_in6 ip6m_addr;	/* or sockaddr_storage? */
715	uint32_t ip6m_mtu;
716};
717
718/*
719 * Argument for IPV6_PORTRANGE:
720 * - which range to search when port is unspecified at bind() or connect()
721 */
722#define	IPV6_PORTRANGE_DEFAULT	0	/* default range */
723#define	IPV6_PORTRANGE_HIGH	1	/* "high" - request firewall bypass */
724#define	IPV6_PORTRANGE_LOW	2	/* "low" - vouchsafe security */
725
726/*
727 * Definitions for inet6 sysctl operations.
728 *
729 * Third level is protocol number.
730 * Fourth level is desired variable within that protocol.
731 */
732#define	IPV6PROTO_MAXID	(IPPROTO_PIM + 1)  /* don't list to IPV6PROTO_MAX */
733
734/*
735 * Names for IP sysctl objects
736 */
737#define	IPV6CTL_FORWARDING	1	/* act as router */
738#define	IPV6CTL_SENDREDIRECTS	2	/* may send redirects when forwarding */
739#define	IPV6CTL_DEFHLIM		3	/* default Hop-Limit */
740#ifdef notyet
741#define	IPV6CTL_DEFMTU		4	/* default MTU */
742#endif
743#define	IPV6CTL_FORWSRCRT	5	/* forward source-routed dgrams */
744#define	IPV6CTL_STATS		6	/* stats */
745#define	IPV6CTL_MRTSTATS	7	/* multicast forwarding stats */
746#define	IPV6CTL_MRTPROTO	8	/* multicast routing protocol */
747#define	IPV6CTL_MAXFRAGPACKETS	9	/* max packets reassembly queue */
748#define	IPV6CTL_SOURCECHECK	10	/* verify source route and intf */
749#define	IPV6CTL_SOURCECHECK_LOGINT 11	/* minimume logging interval */
750#define	IPV6CTL_ACCEPT_RTADV	12
751#define	IPV6CTL_KEEPFAITH	13	/* deprecated */
752#define	IPV6CTL_LOG_INTERVAL	14
753#define	IPV6CTL_HDRNESTLIMIT	15
754#define	IPV6CTL_DAD_COUNT	16
755#define	IPV6CTL_AUTO_FLOWLABEL	17
756#define	IPV6CTL_DEFMCASTHLIM	18
757#define	IPV6CTL_GIF_HLIM	19	/* default HLIM for gif encap packet */
758#define	IPV6CTL_KAME_VERSION	20
759#define	IPV6CTL_USE_DEPRECATED	21	/* use deprec addr (RFC2462 5.5.4) */
760#define	IPV6CTL_RR_PRUNE	22	/* walk timer for router renumbering */
761#if 0	/* obsolete */
762#define	IPV6CTL_MAPPED_ADDR	23
763#endif
764#define	IPV6CTL_V6ONLY		24
765#define	IPV6CTL_RTEXPIRE	25	/* cloned route expiration time */
766#define	IPV6CTL_RTMINEXPIRE	26	/* min value for expiration time */
767#define	IPV6CTL_RTMAXCACHE	27	/* trigger level for dynamic expire */
768
769#define	IPV6CTL_USETEMPADDR	32	/* use temporary addresses [RFC 4941] */
770#define	IPV6CTL_TEMPPLTIME	33	/* preferred lifetime for tmpaddrs */
771#define	IPV6CTL_TEMPVLTIME	34	/* valid lifetime for tmpaddrs */
772#define	IPV6CTL_AUTO_LINKLOCAL	35	/* automatic link-local addr assign */
773#define	IPV6CTL_RIP6STATS	36	/* raw_ip6 stats */
774#define	IPV6CTL_PREFER_TEMPADDR	37	/* prefer temporary addr as src */
775#define	IPV6CTL_ADDRCTLPOLICY	38	/* get/set address selection policy */
776#define	IPV6CTL_USE_DEFAULTZONE	39	/* use default scope zone */
777
778#define	IPV6CTL_MAXFRAGS	41	/* max fragments */
779#define	IPV6CTL_MCAST_PMTU	44	/* enable pMTU discovery for mcast? */
780
781#define	IPV6CTL_NEIGHBORGCTHRESH 46
782#define	IPV6CTL_MAXIFPREFIXES	47
783#define	IPV6CTL_MAXIFDEFROUTERS 48
784#define	IPV6CTL_MAXDYNROUTES	49
785#define	ICMPV6CTL_ND6_ONLINKNSRFC4861	50
786
787/* New entries should be added here from current IPV6CTL_MAXID value. */
788/* to define items, should talk with KAME guys first, for *BSD compatibility */
789#define	IPV6CTL_MAXID		51
790
791#ifdef BSD_KERNEL_PRIVATE
792#define	CTL_IPV6PROTO_NAMES { \
793	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
794	{ 0, 0 }, \
795	{ "tcp6", CTLTYPE_NODE }, \
796	{ 0, 0 }, \
797	{ 0, 0 }, \
798	{ 0, 0 }, \
799	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
800	{ 0, 0 }, \
801	{ 0, 0 }, \
802	{ "udp6", CTLTYPE_NODE }, \
803	{ 0, 0 }, \
804	{ 0, 0 }, \
805	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
806	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
807	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
808	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
809	{ 0, 0 }, \
810	{ "ip6", CTLTYPE_NODE }, \
811	{ 0, 0 }, \
812	{ 0, 0 }, \
813	{ 0, 0 }, \
814	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
815	{ 0, 0 }, \
816	{ "ipsec6", CTLTYPE_NODE }, \
817	{ 0, 0 }, \
818	{ 0, 0 }, \
819	{ 0, 0 }, \
820	{ 0, 0 }, \
821	{ 0, 0 }, \
822	{ 0, 0 }, \
823	{ "icmp6", CTLTYPE_NODE }, \
824	{ 0, 0 }, \
825	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
826	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
827	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
828	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
829	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
830	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
831	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
832	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
833	{ 0, 0 }, \
834	{ 0, 0 }, \
835	{ 0, 0 }, \
836	{ 0, 0 }, \
837}
838/*
839 * Redefinition of mbuf flags
840 */
841#define	M_AUTHIPHDR	M_PROTO2
842#define	M_DECRYPTED	M_PROTO3
843#define	M_AUTHIPDGM	M_PROTO5
844
845struct cmsghdr;
846struct mbuf;
847struct ifnet;
848struct in6_aliasreq;
849
850extern uint16_t in6_pseudo(const struct in6_addr *, const struct in6_addr *,
851    uint32_t);
852extern u_int16_t inet6_cksum(struct mbuf *, uint32_t, uint32_t, uint32_t);
853
854#define	in6_cksum(_m, _n, _o, _l)		\
855	inet6_cksum(_m, _n, _o, _l)
856
857extern int in6_addrscope(struct in6_addr *);
858extern struct in6_ifaddr *in6_ifawithscope(struct ifnet *, struct in6_addr *);
859extern struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
860
861struct sockaddr;
862
863extern void in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6);
864extern void in6_sin_2_v4mapsin6(struct sockaddr_in *sin,
865    struct sockaddr_in6 *sin6);
866extern void in6_sin6_2_sin_in_sock(struct sockaddr *nam);
867extern int in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam);
868
869extern uint32_t in6_finalize_cksum(struct mbuf *, uint32_t, int32_t,
870    int32_t, uint32_t);
871
872#define	in6_delayed_cksum(_m)			\
873	((void) in6_finalize_cksum(_m, 0, 0, -1, CSUM_DELAY_IPV6_DATA))
874#define	in6_delayed_cksum_offset(_m, _o, _s, _p)	\
875	((void) in6_finalize_cksum(_m, _o, _s, _p, CSUM_DELAY_IPV6_DATA))
876#endif /* BSD_KERNEL_PRIVATE */
877
878#ifdef KERNEL_PRIVATE
879/* exporte for ApplicationFirewall */
880extern int in6_localaddr(struct in6_addr *);
881extern int in6addr_local(struct in6_addr *);
882#endif /* KERNEL_PRIVATE */
883
884#ifndef KERNEL
885__BEGIN_DECLS
886struct cmsghdr;
887
888extern int inet6_option_space(int);
889extern int inet6_option_init(void *, struct cmsghdr **, int);
890extern int inet6_option_append(struct cmsghdr *, const __uint8_t *, int, int);
891extern __uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
892extern int inet6_option_next(const struct cmsghdr *, __uint8_t **);
893extern int inet6_option_find(const struct cmsghdr *, __uint8_t **, int);
894
895extern size_t inet6_rthdr_space(int, int);
896extern struct cmsghdr *inet6_rthdr_init(void *, int);
897extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
898    unsigned int);
899extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
900#if 0 /* not implemented yet */
901extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
902#endif
903extern int inet6_rthdr_segments(const struct cmsghdr *);
904extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
905extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
906
907extern int inet6_opt_init(void *, socklen_t);
908extern int inet6_opt_append(void *, socklen_t, int, __uint8_t, socklen_t,
909    __uint8_t, void **);
910extern int inet6_opt_finish(void *, socklen_t, int);
911extern int inet6_opt_set_val(void *, int, void *, socklen_t);
912
913extern int inet6_opt_next(void *, socklen_t, int, __uint8_t *, socklen_t *,
914    void **);
915extern int inet6_opt_find(void *, socklen_t, int, __uint8_t, socklen_t *,
916    void **);
917extern int inet6_opt_get_val(void *, int, void *, socklen_t);
918extern socklen_t inet6_rth_space(int, int);
919extern void *inet6_rth_init(void *, socklen_t, int, int);
920extern int inet6_rth_add(void *, const struct in6_addr *);
921extern int inet6_rth_reverse(const void *, void *);
922extern int inet6_rth_segments(const void *);
923extern struct in6_addr *inet6_rth_getaddr(const void *, int);
924extern void addrsel_policy_init(void);
925__END_DECLS
926#endif /* !KERNEL */
927#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */
928#endif /* !_NETINET6_IN6_H_ */
929