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A		 1/* $KAME: in6.h,v 1.40 2000/03/25 07:23:42 sumikawa Exp $ */
2
3/*
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32/*
33 * Copyright (c) 1982, 1986, 1990, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by the University of
47 * California, Berkeley and its contributors.
48 * 4. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * SUCH DAMAGE.
63 *
64 * @(#)in.h 8.3 (Berkeley) 1/3/94
65 */
66
67#ifndef __KAME_NETINET_IN_H_INCLUDED_
68#error "do not include netinet6/in6.h directly, include netinet/in.h"
69#endif
70
71#ifndef _NETINET6_IN6_H_
72#define _NETINET6_IN6_H_
73
74#if !defined(_XOPEN_SOURCE)
75#include <sys/queue.h>
76#endif
77
78/*
79 * Identification of the network protocol stack
80 */
81#define __KAME__
82#define __KAME_VERSION "STABLE 20000425"
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 *
93 * The default range is IPPORT_ANONMIX to IPPORT_ANONMAX, although
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 */
150 u_int32_t sin6_scope_id; /* intface scope id */
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
169extern const struct in6_addr in6mask0;
170extern const struct in6_addr in6mask32;
171extern const struct in6_addr in6mask64;
172extern const struct in6_addr in6mask96;
173extern const struct in6_addr in6mask128;
174#endif /* KERNEL */
175
176/*
177 * Macros started with IPV6_ADDR is KAME local
178 */
179#ifdef KERNEL /*XXX nonstandard*/
180#if BYTE_ORDER == BIG_ENDIAN
181#define IPV6_ADDR_INT32_ONE 1
182#define IPV6_ADDR_INT32_TWO 2
183#define IPV6_ADDR_INT32_MNL 0xff010000
184#define IPV6_ADDR_INT32_MLL 0xff020000
185#define IPV6_ADDR_INT32_SMP 0x0000ffff
186#define IPV6_ADDR_INT16_ULL 0xfe80
187#define IPV6_ADDR_INT16_USL 0xfec0
188#define IPV6_ADDR_INT16_MLL 0xff02
189#elif BYTE_ORDER == LITTLE_ENDIAN
190#define IPV6_ADDR_INT32_ONE 0x01000000
191#define IPV6_ADDR_INT32_TWO 0x02000000
192#define IPV6_ADDR_INT32_MNL 0x000001ff
193#define IPV6_ADDR_INT32_MLL 0x000002ff
194#define IPV6_ADDR_INT32_SMP 0xffff0000
195#define IPV6_ADDR_INT16_ULL 0x80fe
196#define IPV6_ADDR_INT16_USL 0xc0fe
197#define IPV6_ADDR_INT16_MLL 0x02ff
198#endif
199#endif
200
201/*
202 * Definition of some useful macros to handle IP6 addresses
203 */
204#define IN6ADDR_ANY_INIT \
205 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
206 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
207#define IN6ADDR_LOOPBACK_INIT \
208 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
210#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
211 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
212 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
213#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
214 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
215 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
216#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
217 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
218 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
219
220#ifdef KERNEL
221extern const struct in6_addr in6addr_any;
222extern const struct in6_addr in6addr_loopback;
223extern const struct in6_addr in6addr_nodelocal_allnodes;
224extern const struct in6_addr in6addr_linklocal_allnodes;
225extern const struct in6_addr in6addr_linklocal_allrouters;
226#endif
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) \
236 (bcmp((a), (b), sizeof(struct in6_addr)) == 0)
237#else
238#define IN6_ARE_ADDR_EQUAL(a, b) \
239 (memcmp((a), (b), sizeof(struct in6_addr)) == 0)
240#endif
241
242/*
243 * Unspecified
244 */
245#define IN6_IS_ADDR_UNSPECIFIED(a) \
246 ((*(u_int32_t *)(&(a)->s6_addr[0]) == 0) && \
247 (*(u_int32_t *)(&(a)->s6_addr[4]) == 0) && \
248 (*(u_int32_t *)(&(a)->s6_addr[8]) == 0) && \
249 (*(u_int32_t *)(&(a)->s6_addr[12]) == 0))
250
251/*
252 * Loopback
253 */
254#define IN6_IS_ADDR_LOOPBACK(a) \
255 ((*(u_int32_t *)(&(a)->s6_addr[0]) == 0) && \
256 (*(u_int32_t *)(&(a)->s6_addr[4]) == 0) && \
257 (*(u_int32_t *)(&(a)->s6_addr[8]) == 0) && \
258 (*(u_int32_t *)(&(a)->s6_addr[12]) == ntohl(1)))
259
260/*
261 * IPv4 compatible
262 */
263#define IN6_IS_ADDR_V4COMPAT(a) \
264 ((*(u_int32_t *)(&(a)->s6_addr[0]) == 0) && \
265 (*(u_int32_t *)(&(a)->s6_addr[4]) == 0) && \
266 (*(u_int32_t *)(&(a)->s6_addr[8]) == 0) && \
267 (*(u_int32_t *)(&(a)->s6_addr[12]) != 0) && \
268 (*(u_int32_t *)(&(a)->s6_addr[12]) != ntohl(1)))
269
270/*
271 * Mapped
272 */
273#define IN6_IS_ADDR_V4MAPPED(a) \
274 ((*(u_int32_t *)(&(a)->s6_addr[0]) == 0) && \
275 (*(u_int32_t *)(&(a)->s6_addr[4]) == 0) && \
276 (*(u_int32_t *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
277
278/*
279 * KAME Scope Values
280 */
281
282#ifdef KERNEL /*XXX nonstandard*/
283#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
284#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
285#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
286#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
287#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
288#else
289#define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
290#define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
291#define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
292#define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
293#define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
294#endif
295
296/*
297 * Unicast Scope
298 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
299 */
300#define IN6_IS_ADDR_LINKLOCAL(a) \
301 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
302#define IN6_IS_ADDR_SITELOCAL(a) \
303 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
304
305/*
306 * Multicast
307 */
308#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
309
310#ifdef KERNEL /*XXX nonstandard*/
311#define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
312#else
313#define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
314#endif
315
316/*
317 * Multicast Scope
318 */
319#ifdef KERNEL /*refers nonstandard items */
320#define IN6_IS_ADDR_MC_NODELOCAL(a) \
321 (IN6_IS_ADDR_MULTICAST(a) && \
322 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
323#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
324 (IN6_IS_ADDR_MULTICAST(a) && \
325 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
326#define IN6_IS_ADDR_MC_SITELOCAL(a) \
327 (IN6_IS_ADDR_MULTICAST(a) && \
328 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
329#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
330 (IN6_IS_ADDR_MULTICAST(a) && \
331 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
332#define IN6_IS_ADDR_MC_GLOBAL(a) \
333 (IN6_IS_ADDR_MULTICAST(a) && \
334 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
335#else
336#define IN6_IS_ADDR_MC_NODELOCAL(a) \
337 (IN6_IS_ADDR_MULTICAST(a) && \
338 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
339#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
340 (IN6_IS_ADDR_MULTICAST(a) && \
341 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
342#define IN6_IS_ADDR_MC_SITELOCAL(a) \
343 (IN6_IS_ADDR_MULTICAST(a) && \
344 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
345#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
346 (IN6_IS_ADDR_MULTICAST(a) && \
347 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
348#define IN6_IS_ADDR_MC_GLOBAL(a) \
349 (IN6_IS_ADDR_MULTICAST(a) && \
350 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
351#endif
352
353/*
354 * Wildcard Socket
355 */
356#if 0 /*pre-RFC2553*/
357#define IN6_IS_ADDR_ANY(a) IN6_IS_ADDR_UNSPECIFIED(a)
358#endif
359
360/*
361 * KAME Scope
362 */
363#ifdef KERNEL /*nonstandard*/
364#define IN6_IS_SCOPE_LINKLOCAL(a) \
365 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
366 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
367#endif
368
369/*
370 * IP6 route structure
371 */
372#if !defined(_XOPEN_SOURCE)
373struct route_in6 {
374 struct rtentry *ro_rt;
375 struct sockaddr_in6 ro_dst;
376};
377#endif
378
379/*
380 * Options for use with [gs]etsockopt at the IPV6 level.
381 * First word of comment is data type; bool is stored in int.
382 */
383/* no hdrincl */
384#if 0 /* the followings are relic in IPv4 and hence are disabled */
385#define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
386#define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
387#define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
388#define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
389#define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
390#endif
391#define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
392#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
393#define IPV6_MULTICAST_IF 9 /* u_char; set/get IP6 multicast i/f */
394#define IPV6_MULTICAST_HOPS 10 /* u_char; set/get IP6 multicast hops */
395#define IPV6_MULTICAST_LOOP 11 /* u_char; set/get IP6 multicast loopback */
396#define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
397#define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
398#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
399#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
400#define IPV6_PKTINFO 19 /* in6_pktinfo; send if, src addr */
401#define IPV6_HOPLIMIT 20 /* int; send hop limit */
402#define IPV6_NEXTHOP 21 /* sockaddr; next hop addr */
403#define IPV6_HOPOPTS 22 /* ip6_hbh; send hop-by-hop option */
404#define IPV6_DSTOPTS 23 /* ip6_dest; send dst option befor rthdr */
405#define IPV6_RTHDR 24 /* ip6_rthdr; send routing header */
406#define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
407 /* obsoleted by 2292bis */
408#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
409#define IPV6_BINDV6ONLY 27 /* bool; only bind INET6 at null bind */
410
411#if 1 /*IPSEC*/
412#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
413#endif
414#define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
415
416#if 1 /*IPV6FIREWALL*/
417#define IPV6_FW_ADD 30 /* add a firewall rule to chain */
418#define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
419#define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
420#define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
421#define IPV6_FW_GET 34 /* get entire firewall rule chain */
422#endif
423
424/* new socket options introduced in RFC2292bis */
425#define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
426
427#define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
428#define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
429#define IPV6_RECVRTHDR 38 /* bool; recv routing header */
430#define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
431#define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
432#define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
433
434#define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
435#define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
436
437/* the followings are used as cmsg type only */
438#define IPV6_PATHMTU 44 /* 4 bytes int; MTU notification */
439#define IPV6_REACHCONF 45 /* no data; ND reachability confirm */
440
441#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
442#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
443#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
444
445/*
446 * Defaults and limits for options
447 */
448#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
449#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
450
451/*
452 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
453 */
454struct ipv6_mreq {
455 struct in6_addr ipv6mr_multiaddr;
456 u_int ipv6mr_interface;
457};
458
459/*
460 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
461 */
462struct in6_pktinfo {
463 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
464 u_int ipi6_ifindex; /* send/recv interface index */
465};
466
467/*
468 * Argument for IPV6_PORTRANGE:
469 * - which range to search when port is unspecified at bind() or connect()
470 */
471#define IPV6_PORTRANGE_DEFAULT 0 /* default range */
472#define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
473#define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
474
475#if !defined(_XOPEN_SOURCE)
476/*
477 * Definitions for inet6 sysctl operations.
478 *
479 * Third level is protocol number.
480 * Fourth level is desired variable within that protocol.
481 */
482#define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
483
484#define CTL_IPV6PROTO_NAMES { \
485 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
486 { 0, 0 }, \
487 { "tcp6", CTLTYPE_NODE }, \
488 { 0, 0 }, \
489 { 0, 0 }, \
490 { 0, 0 }, \
491 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
492 { 0, 0 }, \
493 { 0, 0 }, \
494 { "udp6", CTLTYPE_NODE }, \
495 { 0, 0 }, \
496 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
501 { 0, 0 }, \
502 { "ip6", CTLTYPE_NODE }, \
503 { 0, 0 }, \
504 { 0, 0 }, \
505 { 0, 0 }, \
506 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
507 { 0, 0 }, \
508 { "ipsec6", CTLTYPE_NODE }, \
509 { 0, 0 }, \
510 { 0, 0 }, \
511 { 0, 0 }, \
512 { 0, 0 }, \
513 { 0, 0 }, \
514 { 0, 0 }, \
515 { "icmp6", CTLTYPE_NODE }, \
516 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
525 { 0, 0 }, \
526 { 0, 0 }, \
527 { 0, 0 }, \
528 { "pim6", CTLTYPE_NODE }, \
529}
530
531/*
532 * Names for IP sysctl objects
533 */
534#define IPV6CTL_FORWARDING 1 /* act as router */
535#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
536#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
537#ifdef notyet
538#define IPV6CTL_DEFMTU 4 /* default MTU */
539#endif
540#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
541#define IPV6CTL_STATS 6 /* stats */
542#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
543#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
544#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
545#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
546#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
547#define IPV6CTL_ACCEPT_RTADV 12
548#define IPV6CTL_KEEPFAITH 13
549#define IPV6CTL_LOG_INTERVAL 14
550#define IPV6CTL_HDRNESTLIMIT 15
551#define IPV6CTL_DAD_COUNT 16
552#define IPV6CTL_AUTO_FLOWLABEL 17
553#define IPV6CTL_DEFMCASTHLIM 18
554#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
555#define IPV6CTL_KAME_VERSION 20
556#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
557#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
558#if MAPPED_ADDR_ENABLED
559#define IPV6CTL_MAPPED_ADDR 23
560#endif /* MAPPED_ADDR_ENABLED */
561/* New entries should be added here from current IPV6CTL_MAXID value. */
562#define IPV6CTL_MAXID 24
563
564#if MAPPED_ADDR_ENABLED
565#define IPV6CTL_NAMES_MAPPED_ADDR "mapped_addr"
566#define IPV6CTL_TYPE_MAPPED_ADDR CTLTYPE_INT
567#define IPV6CTL_VARS_MAPPED_ADDR &ip6_mapped_addr_on
568#else /* MAPPED_ADDR_ENABLED */
569#define IPV6CTL_NAMES_MAPPED_ADDR 0
570#define IPV6CTL_TYPE_MAPPED_ADDR 0
571#define IPV6CTL_VARS_MAPPED_ADDR 0
572#endif /* MAPPED_ADDR_ENABLED */
573
574#if IPV6CTL_BINDV6ONLY
575#define IPV6CTL_NAMES_BINDV6ONLY "bindv6only"
576#define IPV6CTL_TYPE_BINDV6ONLY CTLTYPE_INT
577#define IPV6CTL_VARS_BINDV6ONLY &ip6_bindv6only
578#else
579#define IPV6CTL_NAMES_BINDV6ONLY 0
580#define IPV6CTL_TYPE_BINDV6ONLY 0
581#define IPV6CTL_VARS_BINDV6ONLY 0
582#endif
583
584#define IPV6CTL_NAMES { \
585 { 0, 0 }, \
586 { "forwarding", CTLTYPE_INT }, \
587 { "redirect", CTLTYPE_INT }, \
588 { "hlim", CTLTYPE_INT }, \
589 { "mtu", CTLTYPE_INT }, \
590 { "forwsrcrt", CTLTYPE_INT }, \
591 { 0, 0 }, \
592 { 0, 0 }, \
593 { "mrtproto", CTLTYPE_INT }, \
594 { "maxfragpackets", CTLTYPE_INT }, \
595 { "sourcecheck", CTLTYPE_INT }, \
596 { "sourcecheck_logint", CTLTYPE_INT }, \
597 { "accept_rtadv", CTLTYPE_INT }, \
598 { "keepfaith", CTLTYPE_INT }, \
599 { "log_interval", CTLTYPE_INT }, \
600 { "hdrnestlimit", CTLTYPE_INT }, \
601 { "dad_count", CTLTYPE_INT }, \
602 { "auto_flowlabel", CTLTYPE_INT }, \
603 { "defmcasthlim", CTLTYPE_INT }, \
604 { "gifhlim", CTLTYPE_INT }, \
605 { "kame_version", CTLTYPE_STRING }, \
606 { "use_deprecated", CTLTYPE_INT }, \
607 { "rr_prune", CTLTYPE_INT }, \
608 { IPV6CTL_NAMES_MAPPED_ADDR, IPV6CTL_TYPE_MAPPED_ADDR }, \
609 { IPV6CTL_NAMES_BINDV6ONLY, IPV6CTL_TYPE_BINDV6ONLY }, \
610}
611
612#ifdef __bsdi__
613#define IPV6CTL_VARS { \
614 0, \
615 &ip6_forwarding, \
616 &ip6_sendredirects, \
617 &ip6_defhlim, \
618 0, \
619 &ip6_forward_srcrt, \
620 0, \
621 0, \
622 0, \
623 &ip6_maxfragpackets, \
624 &ip6_sourcecheck, \
625 &ip6_sourcecheck_interval, \
626 &ip6_accept_rtadv, \
627 &ip6_keepfaith, \
628 &ip6_log_interval, \
629 &ip6_hdrnestlimit, \
630 &ip6_dad_count, \
631 &ip6_auto_flowlabel, \
632 &ip6_defmcasthlim, \
633 &ip6_gif_hlim, \
634 0, \
635 &ip6_use_deprecated, \
636 &ip6_rr_prune, \
637 IPV6CTL_VARS_MAPPED_ADDR, \
638 IPV6CTL_VARS_BINDV6ONLY, \
639}
640#endif
641#endif /* !_XOPEN_SOURCE */
642
643#ifdef KERNEL
644struct cmsghdr;
645
646int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
647int in6_localaddr __P((struct in6_addr *));
648int in6_addrscope __P((struct in6_addr *));
649struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *));
650struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
651extern void in6_if_up __P((struct ifnet *));
652#if MAPPED_ADDR_ENABLED
653struct sockaddr;
654
655void in6_sin6_2_sin __P((struct sockaddr_in *sin,
656 struct sockaddr_in6 *sin6));
657void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
658 struct sockaddr_in6 *sin6));
659void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
660void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
661#endif /* MAPPED_ADDR_ENABLED */
662
663#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
664#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
665#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
666#endif /* KERNEL */
667
668__BEGIN_DECLS
669struct cmsghdr;
670
671extern int inet6_option_space __P((int));
672extern int inet6_option_init __P((void *, struct cmsghdr **, int));
673extern int inet6_option_append __P((struct cmsghdr *, const u_int8_t *,
674 int, int));
675extern u_int8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
676extern int inet6_option_next __P((const struct cmsghdr *, u_int8_t **));
677extern int inet6_option_find __P((const struct cmsghdr *, u_int8_t **, int));
678
679extern size_t inet6_rthdr_space __P((int, int));
680extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
681extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
682 unsigned int));
683extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
684#if 0 /* not implemented yet */
685extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
686#endif
687extern int inet6_rthdr_segments __P((const struct cmsghdr *));
688extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
689extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
690
691extern int inet6_opt_init __P((void *, size_t));
692extern int inet6_opt_append __P((void *, size_t, int, u_int8_t,
693 size_t, u_int8_t, void **));
694extern int inet6_opt_finish __P((void *, size_t, int));
695extern int inet6_opt_set_val __P((void *, size_t, void *, int));
696
697extern int inet6_opt_next __P((void *, size_t, int, u_int8_t *,
698 size_t *, void **));
699extern int inet6_opt_find __P((void *, size_t, int, u_int8_t,
700 size_t *, void **));
701extern int inet6_opt_get_val __P((void *, size_t, void *, int));
702extern size_t inet6_rth_space __P((int, int));
703extern void *inet6_rth_init __P((void *, int, int, int));
704extern int inet6_rth_add __P((void *, const struct in6_addr *));
705extern int inet6_rth_reverse __P((const void *, void *));
706extern int inet6_rth_segments __P((const void *));
707extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
708__END_DECLS
709
710#endif /* !_NETINET6_IN6_H_ */
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