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9bccf70c
A		 1/* $FreeBSD: src/sys/netinet6/in6.h,v 1.7.2.4 2001/07/04 09:45:23 ume Exp $ */
2/* $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $ */
1c79356b
A		 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_
9bccf70c 69#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
1c79356b
A		 70#endif
71
72#ifndef _NETINET6_IN6_H_
73#define _NETINET6_IN6_H_
9bccf70c 74#include <sys/appleapiopts.h>
1c79356b
A		 75
76/*
77 * Identification of the network protocol stack
9bccf70c
A		 78 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
79 * has the table of implementation/integration differences.
1c79356b
A		 80 */
81#define __KAME__
9bccf70c 82#define __KAME_VERSION "20010528/apple-darwin"
1c79356b
A		 83
84/*
85 * Local port number conventions:
86 *
87 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
88 * unless a kernel is compiled with IPNOPRIVPORTS defined.
89 *
90 * When a user does a bind(2) or connect(2) with a port number of zero,
91 * a non-conflicting local port address is chosen.
92 *
9bccf70c 93 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
1c79356b
A		 94 * that is settable by sysctl(3); net.inet.ip.anonportmin and
95 * net.inet.ip.anonportmax respectively.
96 *
97 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
98 * default assignment range.
99 *
100 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
101 *
102 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
103 * and exists only for FreeBSD compatibility purposes.
104 *
105 * The value IP_PORTRANGE_LOW changes the range to the "low" are
106 * that is (by convention) restricted to privileged processes.
107 * This convention is based on "vouchsafe" principles only.
108 * It is only secure if you trust the remote host to restrict these ports.
109 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
110 */
111
112#define IPV6PORT_RESERVED 1024
113#define IPV6PORT_ANONMIN 49152
114#define IPV6PORT_ANONMAX 65535
115#define IPV6PORT_RESERVEDMIN 600
116#define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
117
118/*
119 * IPv6 address
120 */
121struct in6_addr {
122 union {
123 u_int8_t __u6_addr8[16];
124 u_int16_t __u6_addr16[8];
125 u_int32_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 * Socket address for IPv6
140 */
141#if !defined(_XOPEN_SOURCE)
142#define SIN6_LEN
143#endif
144struct sockaddr_in6 {
145 u_int8_t sin6_len; /* length of this struct(sa_family_t)*/
146 u_int8_t sin6_family; /* AF_INET6 (sa_family_t) */
147 u_int16_t sin6_port; /* Transport layer port # (in_port_t)*/
148 u_int32_t sin6_flowinfo; /* IP6 flow information */
149 struct in6_addr sin6_addr; /* IP6 address */
9bccf70c 150 u_int32_t sin6_scope_id; /* scope zone index */
1c79356b
A		 151};
152
153/*
154 * Local definition for masks
155 */
156#ifdef KERNEL /*XXX nonstandard*/
157#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
158#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
159 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
160#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
161 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
162#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
163 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
164#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
165 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
166#endif
167
168#ifdef KERNEL
9bccf70c
A		 169extern const struct sockaddr_in6 sa6_any;
170
1c79356b
A		 171extern const struct in6_addr in6mask0;
172extern const struct in6_addr in6mask32;
173extern const struct in6_addr in6mask64;
174extern const struct in6_addr in6mask96;
175extern const struct in6_addr in6mask128;
176#endif /* KERNEL */
177
178/*
179 * Macros started with IPV6_ADDR is KAME local
180 */
181#ifdef KERNEL /*XXX nonstandard*/
182#if BYTE_ORDER == BIG_ENDIAN
183#define IPV6_ADDR_INT32_ONE 1
184#define IPV6_ADDR_INT32_TWO 2
185#define IPV6_ADDR_INT32_MNL 0xff010000
186#define IPV6_ADDR_INT32_MLL 0xff020000
187#define IPV6_ADDR_INT32_SMP 0x0000ffff
188#define IPV6_ADDR_INT16_ULL 0xfe80
189#define IPV6_ADDR_INT16_USL 0xfec0
190#define IPV6_ADDR_INT16_MLL 0xff02
191#elif BYTE_ORDER == LITTLE_ENDIAN
192#define IPV6_ADDR_INT32_ONE 0x01000000
193#define IPV6_ADDR_INT32_TWO 0x02000000
194#define IPV6_ADDR_INT32_MNL 0x000001ff
195#define IPV6_ADDR_INT32_MLL 0x000002ff
196#define IPV6_ADDR_INT32_SMP 0xffff0000
197#define IPV6_ADDR_INT16_ULL 0x80fe
198#define IPV6_ADDR_INT16_USL 0xc0fe
199#define IPV6_ADDR_INT16_MLL 0x02ff
200#endif
201#endif
202
203/*
204 * Definition of some useful macros to handle IP6 addresses
205 */
206#define IN6ADDR_ANY_INIT \
207 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
208 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
209#define IN6ADDR_LOOPBACK_INIT \
210 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
211 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
212#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
213 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
214 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
215#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
216 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
217 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
218#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
219 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
220 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
221
1c79356b
A		 222extern const struct in6_addr in6addr_any;
223extern const struct in6_addr in6addr_loopback;
224extern const struct in6_addr in6addr_nodelocal_allnodes;
225extern const struct in6_addr in6addr_linklocal_allnodes;
226extern const struct in6_addr in6addr_linklocal_allrouters;
1c79356b
A		 227
228/*
229 * Equality
230 * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
231 * does not supply memcmp(). For userland memcmp() is preferred as it is
232 * in ANSI standard.
233 */
234#ifdef KERNEL
235#define IN6_ARE_ADDR_EQUAL(a, b) \
9bccf70c 236 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
1c79356b
A		 237#else
238#define IN6_ARE_ADDR_EQUAL(a, b) \
9bccf70c
A		 239 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
240#endif
241
242#ifdef KERNEL /* non standard */
243/* see if two addresses are equal in a scope-conscious manner. */
244#define SA6_ARE_ADDR_EQUAL(a, b) \
245 (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
246 ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
247 (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
1c79356b
A		 248#endif
249
250/*
251 * Unspecified
252 */
253#define IN6_IS_ADDR_UNSPECIFIED(a) \
9bccf70c
A		 254 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
255 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
256 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
257 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
1c79356b
A		 258
259/*
260 * Loopback
261 */
262#define IN6_IS_ADDR_LOOPBACK(a) \
9bccf70c
A		 263 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
264 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
265 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
266 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
1c79356b
A		 267
268/*
269 * IPv4 compatible
270 */
271#define IN6_IS_ADDR_V4COMPAT(a) \
9bccf70c
A		 272 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
273 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
274 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
275 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
276 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
1c79356b
A		 277
278/*
279 * Mapped
280 */
281#define IN6_IS_ADDR_V4MAPPED(a) \
9bccf70c
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]) == ntohl(0x0000ffff)))
1c79356b
A		 285
286/*
287 * KAME Scope Values
288 */
289
290#ifdef KERNEL /*XXX nonstandard*/
291#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
292#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
293#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
294#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
295#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
296#else
297#define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
298#define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
299#define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
300#define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
301#define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
302#endif
303
304/*
305 * Unicast Scope
306 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
307 */
308#define IN6_IS_ADDR_LINKLOCAL(a) \
309 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
310#define IN6_IS_ADDR_SITELOCAL(a) \
311 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
312
313/*
314 * Multicast
315 */
316#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
317
318#ifdef KERNEL /*XXX nonstandard*/
319#define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
320#else
321#define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
322#endif
323
324/*
325 * Multicast Scope
326 */
327#ifdef KERNEL /*refers nonstandard items */
328#define IN6_IS_ADDR_MC_NODELOCAL(a) \
329 (IN6_IS_ADDR_MULTICAST(a) && \
330 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
331#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
332 (IN6_IS_ADDR_MULTICAST(a) && \
333 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
334#define IN6_IS_ADDR_MC_SITELOCAL(a) \
335 (IN6_IS_ADDR_MULTICAST(a) && \
336 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
337#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
338 (IN6_IS_ADDR_MULTICAST(a) && \
339 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
340#define IN6_IS_ADDR_MC_GLOBAL(a) \
341 (IN6_IS_ADDR_MULTICAST(a) && \
342 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
343#else
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_LINKLOCAL(a) \
348 (IN6_IS_ADDR_MULTICAST(a) && \
349 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
350#define IN6_IS_ADDR_MC_SITELOCAL(a) \
351 (IN6_IS_ADDR_MULTICAST(a) && \
352 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
353#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
354 (IN6_IS_ADDR_MULTICAST(a) && \
355 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
356#define IN6_IS_ADDR_MC_GLOBAL(a) \
357 (IN6_IS_ADDR_MULTICAST(a) && \
358 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
359#endif
360
9bccf70c 361#ifdef KERNEL /*nonstandard*/
1c79356b
A		 362/*
363 * KAME Scope
364 */
1c79356b
A		 365#define IN6_IS_SCOPE_LINKLOCAL(a) \
366 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
367 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
9bccf70c
A		 368
369#define IFA6_IS_DEPRECATED(a) \
370 ((a)->ia6_lifetime.ia6t_preferred != 0 && \
371 (a)->ia6_lifetime.ia6t_preferred < time_second)
372#define IFA6_IS_INVALID(a) \
373 ((a)->ia6_lifetime.ia6t_expire != 0 && \
374 (a)->ia6_lifetime.ia6t_expire < time_second)
375#endif /* _KERNEL */
1c79356b
A		 376
377/*
378 * IP6 route structure
379 */
9bccf70c 380#ifdef __APPLE_API_PRIVATE
1c79356b
A		 381#if !defined(_XOPEN_SOURCE)
382struct route_in6 {
383 struct rtentry *ro_rt;
384 struct sockaddr_in6 ro_dst;
385};
386#endif
9bccf70c 387#endif /* __APPLE_API_PRIVATE */
1c79356b
A		 388
389/*
390 * Options for use with [gs]etsockopt at the IPV6 level.
391 * First word of comment is data type; bool is stored in int.
392 */
393/* no hdrincl */
394#if 0 /* the followings are relic in IPv4 and hence are disabled */
395#define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
396#define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
397#define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
398#define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
399#define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
400#endif
401#define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
402#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
403#define IPV6_MULTICAST_IF 9 /* u_char; set/get IP6 multicast i/f */
404#define IPV6_MULTICAST_HOPS 10 /* u_char; set/get IP6 multicast hops */
405#define IPV6_MULTICAST_LOOP 11 /* u_char; set/get IP6 multicast loopback */
406#define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
407#define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
408#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
409#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
9bccf70c
A		 410/* RFC2292 options */
411#define IPV6_PKTINFO 19 /* bool; send/recv if, src/dst addr */
412#define IPV6_HOPLIMIT 20 /* bool; hop limit */
413#define IPV6_NEXTHOP 21 /* bool; next hop addr */
414#define IPV6_HOPOPTS 22 /* bool; hop-by-hop option */
415#define IPV6_DSTOPTS 23 /* bool; destination option */
416#define IPV6_RTHDR 24 /* bool; routing header */
1c79356b 417#define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
9bccf70c 418
1c79356b 419#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
9bccf70c
A		 420#define IPV6_V6ONLY 27 /* bool; only bind INET6 at wildcard bind */
421#ifndef _KERNEL
422#define IPV6_BINDV6ONLY IPV6_V6ONLY
423#endif
1c79356b
A		 424
425#if 1 /*IPSEC*/
426#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
427#endif
428#define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
429
430#if 1 /*IPV6FIREWALL*/
431#define IPV6_FW_ADD 30 /* add a firewall rule to chain */
432#define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
433#define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
434#define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
435#define IPV6_FW_GET 34 /* get entire firewall rule chain */
436#endif
437
9bccf70c 438/* to define items, should talk with KAME guys first, for *BSD compatibility */
1c79356b
A		 439
440#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
441#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
442#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
443
444/*
445 * Defaults and limits for options
446 */
447#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
448#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
449
450/*
451 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
452 */
453struct ipv6_mreq {
454 struct in6_addr ipv6mr_multiaddr;
9bccf70c 455 unsigned int ipv6mr_interface;
1c79356b
A		 456};
457
458/*
459 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
460 */
461struct in6_pktinfo {
9bccf70c
A		 462 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
463 unsigned int ipi6_ifindex; /* send/recv interface index */
1c79356b
A		 464};
465
466/*
467 * Argument for IPV6_PORTRANGE:
468 * - which range to search when port is unspecified at bind() or connect()
469 */
470#define IPV6_PORTRANGE_DEFAULT 0 /* default range */
471#define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
472#define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
473
474#if !defined(_XOPEN_SOURCE)
475/*
476 * Definitions for inet6 sysctl operations.
477 *
478 * Third level is protocol number.
479 * Fourth level is desired variable within that protocol.
480 */
481#define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
482
483#define CTL_IPV6PROTO_NAMES { \
484 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
485 { 0, 0 }, \
486 { "tcp6", CTLTYPE_NODE }, \
487 { 0, 0 }, \
488 { 0, 0 }, \
489 { 0, 0 }, \
490 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
491 { 0, 0 }, \
492 { 0, 0 }, \
493 { "udp6", CTLTYPE_NODE }, \
494 { 0, 0 }, \
495 { 0, 0 }, \
496 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
497 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
498 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
499 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
500 { 0, 0 }, \
501 { "ip6", CTLTYPE_NODE }, \
502 { 0, 0 }, \
503 { 0, 0 }, \
504 { 0, 0 }, \
505 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
506 { 0, 0 }, \
507 { "ipsec6", CTLTYPE_NODE }, \
508 { 0, 0 }, \
509 { 0, 0 }, \
510 { 0, 0 }, \
511 { 0, 0 }, \
512 { 0, 0 }, \
513 { 0, 0 }, \
514 { "icmp6", CTLTYPE_NODE }, \
515 { 0, 0 }, \
516 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
517 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
518 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
519 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
520 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
521 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
522 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
523 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
524 { 0, 0 }, \
525 { 0, 0 }, \
526 { 0, 0 }, \
527 { "pim6", CTLTYPE_NODE }, \
528}
529
530/*
531 * Names for IP sysctl objects
532 */
533#define IPV6CTL_FORWARDING 1 /* act as router */
534#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
535#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
536#ifdef notyet
537#define IPV6CTL_DEFMTU 4 /* default MTU */
538#endif
539#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
540#define IPV6CTL_STATS 6 /* stats */
541#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
542#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
543#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
544#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
545#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
546#define IPV6CTL_ACCEPT_RTADV 12
547#define IPV6CTL_KEEPFAITH 13
548#define IPV6CTL_LOG_INTERVAL 14
549#define IPV6CTL_HDRNESTLIMIT 15
550#define IPV6CTL_DAD_COUNT 16
551#define IPV6CTL_AUTO_FLOWLABEL 17
552#define IPV6CTL_DEFMCASTHLIM 18
553#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
554#define IPV6CTL_KAME_VERSION 20
555#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
556#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
9bccf70c 557#if 0 /*obsolete*/
1c79356b 558#define IPV6CTL_MAPPED_ADDR 23
1c79356b 559#endif
9bccf70c
A		 560#define IPV6CTL_V6ONLY 24
561#define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
562#define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
563#define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
1c79356b 564
9bccf70c
A		 565#define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
566#define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
567#define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
568#define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
569#define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
570
571/* New entries should be added here from current IPV6CTL_MAXID value. */
572/* to define items, should talk with KAME guys first, for *BSD compatibility */
573#define IPV6CTL_MAXID 37
1c79356b 574
1c79356b
A		 575#endif /* !_XOPEN_SOURCE */
576
9bccf70c
A		 577/*
578 * Redefinition of mbuf flags
579 */
580#define M_AUTHIPHDR M_PROTO2
581#define M_DECRYPTED M_PROTO3
582#define M_LOOP M_PROTO4
583#define M_AUTHIPDGM M_PROTO5
584
1c79356b 585#ifdef KERNEL
9bccf70c 586#ifdef __APPLE_API_PRIVATE
1c79356b 587struct cmsghdr;
9bccf70c
A		 588struct mbuf;
589struct ifnet;
1c79356b
A		 590
591int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
592int in6_localaddr __P((struct in6_addr *));
593int in6_addrscope __P((struct in6_addr *));
594struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *));
595struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
596extern void in6_if_up __P((struct ifnet *));
1c79356b
A		 597struct sockaddr;
598
599void in6_sin6_2_sin __P((struct sockaddr_in *sin,
600 struct sockaddr_in6 *sin6));
601void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
602 struct sockaddr_in6 *sin6));
603void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
604void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
1c79356b
A		 605
606#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
607#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
608#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
9bccf70c 609#endif /* __APPLE_API_PRIVATE */
1c79356b
A		 610#endif /* KERNEL */
611
612__BEGIN_DECLS
613struct cmsghdr;
614
615extern int inet6_option_space __P((int));
616extern int inet6_option_init __P((void *, struct cmsghdr **, int));
617extern int inet6_option_append __P((struct cmsghdr *, const u_int8_t *,
618 int, int));
619extern u_int8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
620extern int inet6_option_next __P((const struct cmsghdr *, u_int8_t **));
621extern int inet6_option_find __P((const struct cmsghdr *, u_int8_t **, int));
622
623extern size_t inet6_rthdr_space __P((int, int));
624extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
625extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
626 unsigned int));
627extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
628#if 0 /* not implemented yet */
629extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
630#endif
631extern int inet6_rthdr_segments __P((const struct cmsghdr *));
632extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
633extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
634
635extern int inet6_opt_init __P((void *, size_t));
636extern int inet6_opt_append __P((void *, size_t, int, u_int8_t,
637 size_t, u_int8_t, void **));
638extern int inet6_opt_finish __P((void *, size_t, int));
639extern int inet6_opt_set_val __P((void *, size_t, void *, int));
640
641extern int inet6_opt_next __P((void *, size_t, int, u_int8_t *,
642 size_t *, void **));
643extern int inet6_opt_find __P((void *, size_t, int, u_int8_t,
644 size_t *, void **));
645extern int inet6_opt_get_val __P((void *, size_t, void *, int));
646extern size_t inet6_rth_space __P((int, int));
647extern void *inet6_rth_init __P((void *, int, int, int));
648extern int inet6_rth_add __P((void *, const struct in6_addr *));
649extern int inet6_rth_reverse __P((const void *, void *));
650extern int inet6_rth_segments __P((const void *));
651extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
652__END_DECLS
653
654#endif /* !_NETINET6_IN6_H_ */
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