in6.h@ 70372

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1	/* $NetBSD: in6.h,v 1.57 2006/10/31 00:29:30 cbiere Exp $ */
2	/* $KAME: in6.h,v 1.83 2001/03/29 02:55:07 jinmei Exp $ */
3
4	/*
5	Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
6	This program and the accompanying materials are licensed and made available under
7	the terms and conditions of the BSD License that accompanies this distribution.
8	The full text of the license may be found at
9	http://opensource.org/licenses/bsd-license.
10
11	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13	*/
14
15	/*
16	* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
17	* All rights reserved.
18	*
19	* Redistribution and use in source and binary forms, with or without
20	* modification, are permitted provided that the following conditions
21	* are met:
22	* 1. Redistributions of source code must retain the above copyright
23	* notice, this list of conditions and the following disclaimer.
24	* 2. Redistributions in binary form must reproduce the above copyright
25	* notice, this list of conditions and the following disclaimer in the
26	* documentation and/or other materials provided with the distribution.
27	* 3. Neither the name of the project nor the names of its contributors
28	* may be used to endorse or promote products derived from this software
29	* without specific prior written permission.
30	*
31	* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
32	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34	* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
35	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
39	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
40	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41	* SUCH DAMAGE.
42	*/
43
44	/*
45	* Copyright (c) 1982, 1986, 1990, 1993
46	* The Regents of the University of California. All rights reserved.
47	*
48	* Redistribution and use in source and binary forms, with or without
49	* modification, are permitted provided that the following conditions
50	* are met:
51	* 1. Redistributions of source code must retain the above copyright
52	* notice, this list of conditions and the following disclaimer.
53	* 2. Redistributions in binary form must reproduce the above copyright
54	* notice, this list of conditions and the following disclaimer in the
55	* documentation and/or other materials provided with the distribution.
56	* 3. Neither the name of the University nor the names of its contributors
57	* may be used to endorse or promote products derived from this software
58	* without specific prior written permission.
59	*
60	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70	* SUCH DAMAGE.
71	*
72	* @(#)in.h 8.3 (Berkeley) 1/3/94
73	*/
74
75	#ifndef _NETINET6_IN6_H_
76	#define _NETINET6_IN6_H_
77
78	#ifndef __KAME_NETINET_IN_H_INCLUDED_
79	#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
80	#endif
81
82	#include <sys/socket.h>
83
84	/*
85	* Identification of the network protocol stack
86	* for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
87	* has the table of implementation/integration differences.
88	*/
89	#define __KAME__
90	#define __KAME_VERSION "NetBSD-current"
91
92	/*
93	* Local port number conventions:
94	*
95	* Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
96	* unless a kernel is compiled with IPNOPRIVPORTS defined.
97	*
98	* When a user does a bind(2) or connect(2) with a port number of zero,
99	* a non-conflicting local port address is chosen.
100	*
101	* The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
102	* that is settable by sysctl(3); net.inet.ip.anonportmin and
103	* net.inet.ip.anonportmax respectively.
104	*
105	* A user may set the IPPROTO_IP option IP_PORTRANGE to change this
106	* default assignment range.
107	*
108	* The value IP_PORTRANGE_DEFAULT causes the default behavior.
109	*
110	* The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
111	* and exists only for FreeBSD compatibility purposes.
112	*
113	* The value IP_PORTRANGE_LOW changes the range to the "low" are
114	* that is (by convention) restricted to privileged processes.
115	* This convention is based on "vouchsafe" principles only.
116	* It is only secure if you trust the remote host to restrict these ports.
117	* The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
118	*/
119
120	#if defined(_NETBSD_SOURCE)
121	#define IPV6PORT_RESERVED 1024
122	#define IPV6PORT_ANONMIN 49152
123	#define IPV6PORT_ANONMAX 65535
124	#define IPV6PORT_RESERVEDMIN 600
125	#define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
126	#endif
127
128	/*
129	* IPv6 address
130	*/
131	struct in6_addr {
132	union {
133	__uint8_t __u6_addr8[16];
134	__uint16_t __u6_addr16[8];
135	uint32_t __u6_addr32[4];
136	} __u6_addr; /* 128-bit IP6 address */
137	};
138
139	#define s6_addr __u6_addr.__u6_addr8
140	#ifdef _KERNEL /* XXX nonstandard */
141	#define s6_addr8 __u6_addr.__u6_addr8
142	#define s6_addr16 __u6_addr.__u6_addr16
143	#define s6_addr32 __u6_addr.__u6_addr32
144	#endif
145
146	#define INET6_ADDRSTRLEN 46
147
148	/*
149	* Socket address for IPv6
150	*/
151	#if defined(_NETBSD_SOURCE)
152	#define SIN6_LEN
153	#endif
154	struct sockaddr_in6 {
155	uint8_t sin6_len; /* length of this struct(socklen_t)*/
156	sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */
157	in_port_t sin6_port; /* Transport layer port */
158	uint32_t sin6_flowinfo; /* IP6 flow information */
159	struct in6_addr sin6_addr; /* IP6 address */
160	uint32_t sin6_scope_id; /* scope zone index */
161	};
162
163	/*
164	* Local definition for masks
165	*/
166	#ifdef _KERNEL /* XXX nonstandard */
167	#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
168	#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
169	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
170	#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
171	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
172	#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
173	0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
174	#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
175	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
176	#endif
177
178	#ifdef _KERNEL
179	extern const struct sockaddr_in6 sa6_any;
180
181	extern const struct in6_addr in6mask0;
182	extern const struct in6_addr in6mask32;
183	extern const struct in6_addr in6mask64;
184	extern const struct in6_addr in6mask96;
185	extern const struct in6_addr in6mask128;
186	#endif /* _KERNEL */
187
188	/*
189	* Macros started with IPV6_ADDR is KAME local
190	*/
191	#ifdef _KERNEL /* XXX nonstandard */
192	#if BYTE_ORDER == BIG_ENDIAN
193	#define IPV6_ADDR_INT32_ONE 1
194	#define IPV6_ADDR_INT32_TWO 2
195	#define IPV6_ADDR_INT32_MNL 0xff010000
196	#define IPV6_ADDR_INT32_MLL 0xff020000
197	#define IPV6_ADDR_INT32_SMP 0x0000ffff
198	#define IPV6_ADDR_INT16_ULL 0xfe80
199	#define IPV6_ADDR_INT16_USL 0xfec0
200	#define IPV6_ADDR_INT16_MLL 0xff02
201	#elif BYTE_ORDER == LITTLE_ENDIAN
202	#define IPV6_ADDR_INT32_ONE 0x01000000
203	#define IPV6_ADDR_INT32_TWO 0x02000000
204	#define IPV6_ADDR_INT32_MNL 0x000001ff
205	#define IPV6_ADDR_INT32_MLL 0x000002ff
206	#define IPV6_ADDR_INT32_SMP 0xffff0000
207	#define IPV6_ADDR_INT16_ULL 0x80fe
208	#define IPV6_ADDR_INT16_USL 0xc0fe
209	#define IPV6_ADDR_INT16_MLL 0x02ff
210	#endif
211	#endif
212
213	/*
214	* Definition of some useful macros to handle IP6 addresses
215	*/
216	#define IN6ADDR_ANY_INIT \
217	{{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
218	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
219	#define IN6ADDR_LOOPBACK_INIT \
220	{{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
221	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
222	#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
223	{{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
224	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
225	#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
226	{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
227	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
228	#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
229	{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
230	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
231
232	extern const struct in6_addr in6addr_any;
233	extern const struct in6_addr in6addr_loopback;
234	extern const struct in6_addr in6addr_nodelocal_allnodes;
235	extern const struct in6_addr in6addr_linklocal_allnodes;
236	extern const struct in6_addr in6addr_linklocal_allrouters;
237
238	/*
239	* Equality
240	* NOTE: Some of kernel programming environment (for example, openbsd/sparc)
241	* does not supply memcmp(). For userland memcmp() is preferred as it is
242	* in ANSI standard.
243	*/
244	#ifdef _KERNEL
245	#define IN6_ARE_ADDR_EQUAL(a, b) \
246	(bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
247	#else
248	#define IN6_ARE_ADDR_EQUAL(a, b) \
249	(memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
250	#endif
251
252	/*
253	* Unspecified
254	*/
255	#define IN6_IS_ADDR_UNSPECIFIED(a) \
256	(((const uint32_t )(const void *)(&(a)->s6_addr[0]) == 0) && \
257	((const uint32_t )(const void *)(&(a)->s6_addr[4]) == 0) && \
258	((const uint32_t )(const void *)(&(a)->s6_addr[8]) == 0) && \
259	((const uint32_t )(const void *)(&(a)->s6_addr[12]) == 0))
260
261	/*
262	* Loopback
263	*/
264	#define IN6_IS_ADDR_LOOPBACK(a) \
265	(((const uint32_t )(const void *)(&(a)->s6_addr[0]) == 0) && \
266	((const uint32_t )(const void *)(&(a)->s6_addr[4]) == 0) && \
267	((const uint32_t )(const void *)(&(a)->s6_addr[8]) == 0) && \
268	((const uint32_t )(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
269
270	/*
271	* IPv4 compatible
272	*/
273	#define IN6_IS_ADDR_V4COMPAT(a) \
274	(((const uint32_t )(const void *)(&(a)->s6_addr[0]) == 0) && \
275	((const uint32_t )(const void *)(&(a)->s6_addr[4]) == 0) && \
276	((const uint32_t )(const void *)(&(a)->s6_addr[8]) == 0) && \
277	((const uint32_t )(const void *)(&(a)->s6_addr[12]) != 0) && \
278	((const uint32_t )(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
279
280	/*
281	* Mapped
282	*/
283	#define IN6_IS_ADDR_V4MAPPED(a) \
284	(((const uint32_t )(const void *)(&(a)->s6_addr[0]) == 0) && \
285	((const uint32_t )(const void *)(&(a)->s6_addr[4]) == 0) && \
286	((const uint32_t )(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
287
288	/*
289	* KAME Scope Values
290	*/
291
292	#ifdef _KERNEL /* XXX nonstandard */
293	#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
294	#define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
295	#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
296	#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
297	#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
298	#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
299	#else
300	#define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
301	#define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
302	#define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
303	#define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
304	#define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
305	#endif
306
307	/*
308	* Unicast Scope
309	* Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
310	*/
311	#define IN6_IS_ADDR_LINKLOCAL(a) \
312	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
313	#define IN6_IS_ADDR_SITELOCAL(a) \
314	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
315
316	/*
317	* Multicast
318	*/
319	#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
320
321	#ifdef _KERNEL /* XXX nonstandard */
322	#define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
323	#else
324	#define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
325	#endif
326
327	/*
328	* Multicast Scope
329	*/
330	#ifdef _KERNEL /* refers nonstandard items */
331	#define IN6_IS_ADDR_MC_NODELOCAL(a) \
332	(IN6_IS_ADDR_MULTICAST(a) && \
333	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
334	#define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
335	(IN6_IS_ADDR_MULTICAST(a) && \
336	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
337	#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
338	(IN6_IS_ADDR_MULTICAST(a) && \
339	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
340	#define IN6_IS_ADDR_MC_SITELOCAL(a) \
341	(IN6_IS_ADDR_MULTICAST(a) && \
342	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
343	#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
344	(IN6_IS_ADDR_MULTICAST(a) && \
345	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
346	#define IN6_IS_ADDR_MC_GLOBAL(a) \
347	(IN6_IS_ADDR_MULTICAST(a) && \
348	(IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
349	#else
350	#define IN6_IS_ADDR_MC_NODELOCAL(a) \
351	(IN6_IS_ADDR_MULTICAST(a) && \
352	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
353	#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
354	(IN6_IS_ADDR_MULTICAST(a) && \
355	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
356	#define IN6_IS_ADDR_MC_SITELOCAL(a) \
357	(IN6_IS_ADDR_MULTICAST(a) && \
358	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
359	#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
360	(IN6_IS_ADDR_MULTICAST(a) && \
361	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
362	#define IN6_IS_ADDR_MC_GLOBAL(a) \
363	(IN6_IS_ADDR_MULTICAST(a) && \
364	(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
365	#endif
366
367	#ifdef _KERNEL /* nonstandard */
368	/*
369	* KAME Scope
370	*/
371	#define IN6_IS_SCOPE_LINKLOCAL(a) \
372	((IN6_IS_ADDR_LINKLOCAL(a)) \|\| \
373	(IN6_IS_ADDR_MC_LINKLOCAL(a)))
374
375	#define IN6_IS_SCOPE_EMBEDDABLE(__a) \
376	(IN6_IS_SCOPE_LINKLOCAL(__a) \|\| IN6_IS_ADDR_MC_INTFACELOCAL(__a))
377
378	#define IFA6_IS_DEPRECATED(a) \
379	((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
380	(u_int32_t)((time_second - (a)->ia6_updatetime)) > \
381	(a)->ia6_lifetime.ia6t_pltime)
382	#define IFA6_IS_INVALID(a) \
383	((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
384	(u_int32_t)((time_second - (a)->ia6_updatetime)) > \
385	(a)->ia6_lifetime.ia6t_vltime)
386	#endif
387
388	/*
389	* IP6 route structure
390	*/
391	#if defined(_NETBSD_SOURCE)
392	struct route_in6 {
393	struct rtentry *ro_rt;
394	struct sockaddr_in6 ro_dst;
395	};
396	#endif
397
398	/*
399	* Options for use with [gs]etsockopt at the IPV6 level.
400	* First word of comment is data type; bool is stored in int.
401	*/
402	/* no hdrincl */
403	#if 0
404	/* These are deprecated non-standard options which are no longer supported. */
405	#define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
406	#define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
407	#define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
408	#define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
409	#define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
410	#endif
411	#define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
412	#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
413	#define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
414	#define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
415	#define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
416	#define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
417	#define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
418	#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
419	#if defined(_NETBSD_SOURCE)
420	#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
421	#endif
422	/* RFC2292 options */
423	#ifdef _KERNEL
424	#define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
425	#define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
426	#define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
427	#define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
428	#define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
429	#define IPV6_2292RTHDR 24 /* bool; routing header */
430	#define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
431	#endif
432	#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
433	#define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
434
435	#if 1 /* IPSEC */
436	#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
437	#endif
438	#define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
439
440	/* new socket options introduced in RFC3542 */
441	#define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
442
443	#define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
444	#define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
445	#define IPV6_RECVRTHDR 38 /* bool; recv routing header */
446	#define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
447	#define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
448	#ifdef _KERNEL
449	#define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
450	#endif
451	#define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
452	#define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
453	#define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
454	4 bytes int; MTU notification (cmsg) */
455
456	/* more new socket options introduced in RFC3542 */
457	#define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
458	#define IPV6_HOPLIMIT 47 /* int; send hop limit */
459	#define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
460	#define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
461	#define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
462	#define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
463
464	#define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
465	#ifdef _KERNEL
466	#define IPV6_OTCLASS 58 /* u_int8_t; send traffic class value */
467	#endif
468
469	#define IPV6_TCLASS 61 /* int; send traffic class value */
470	#define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
471	/* to define items, should talk with KAME guys first, for BSD compatibility /
472
473	#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
474	#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
475	#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
476
477	/*
478	* Defaults and limits for options
479	*/
480	#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
481	#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
482
483	/*
484	* Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
485	*/
486	struct ipv6_mreq {
487	struct in6_addr ipv6mr_multiaddr;
488	unsigned int ipv6mr_interface;
489	};
490
491	/*
492	* IPV6_PKTINFO: Packet information(RFC2292 sec 5)
493	*/
494	struct in6_pktinfo {
495	struct in6_addr ipi6_addr; /* src/dst IPv6 address */
496	unsigned int ipi6_ifindex; /* send/recv interface index */
497	};
498
499	/*
500	* Control structure for IPV6_RECVPATHMTU socket option.
501	*/
502	struct ip6_mtuinfo {
503	struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
504	uint32_t ip6m_mtu;
505	};
506
507	/*
508	* Argument for IPV6_PORTRANGE:
509	* - which range to search when port is unspecified at bind() or connect()
510	*/
511	#define IPV6_PORTRANGE_DEFAULT 0 /* default range */
512	#define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
513	#define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
514
515	#if defined(_NETBSD_SOURCE)
516	/*
517	* Definitions for inet6 sysctl operations.
518	*
519	* Third level is protocol number.
520	* Fourth level is desired variable within that protocol.
521	*/
522	#define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
523
524	#define CTL_IPV6PROTO_NAMES { \
525	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
526	{ 0, 0 }, \
527	{ "tcp6", CTLTYPE_NODE }, \
528	{ 0, 0 }, \
529	{ 0, 0 }, \
530	{ 0, 0 }, \
531	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
532	{ 0, 0 }, \
533	{ 0, 0 }, \
534	{ "udp6", CTLTYPE_NODE }, \
535	{ 0, 0 }, \
536	{ 0, 0 }, \
537	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
538	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
539	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
540	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
541	{ 0, 0 }, \
542	{ "ip6", CTLTYPE_NODE }, \
543	{ 0, 0 }, \
544	{ 0, 0 }, \
545	{ 0, 0 }, \
546	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
547	{ 0, 0 }, \
548	{ "ipsec6", CTLTYPE_NODE }, \
549	{ 0, 0 }, \
550	{ 0, 0 }, \
551	{ 0, 0 }, \
552	{ 0, 0 }, \
553	{ 0, 0 }, \
554	{ 0, 0 }, \
555	{ "icmp6", CTLTYPE_NODE }, \
556	{ 0, 0 }, \
557	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
558	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
559	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
560	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
561	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
562	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
563	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
564	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
565	{ 0, 0 }, \
566	{ 0, 0 }, \
567	{ 0, 0 }, \
568	{ "pim6", CTLTYPE_NODE }, \
569	}
570
571	/*
572	* Names for IP sysctl objects
573	*/
574	#define IPV6CTL_FORWARDING 1 /* act as router */
575	#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
576	#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
577	#ifdef notyet
578	#define IPV6CTL_DEFMTU 4 /* default MTU */
579	#endif
580	#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
581	#define IPV6CTL_STATS 6 /* stats */
582	#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
583	#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
584	#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
585	#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
586	#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
587	#define IPV6CTL_ACCEPT_RTADV 12
588	#define IPV6CTL_KEEPFAITH 13
589	#define IPV6CTL_LOG_INTERVAL 14
590	#define IPV6CTL_HDRNESTLIMIT 15
591	#define IPV6CTL_DAD_COUNT 16
592	#define IPV6CTL_AUTO_FLOWLABEL 17
593	#define IPV6CTL_DEFMCASTHLIM 18
594	#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
595	#define IPV6CTL_KAME_VERSION 20
596	#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
597	#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
598	/* 23: reserved */
599	#define IPV6CTL_V6ONLY 24
600	/* 25 to 27: reserved */
601	#define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */
602	#define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */
603	#define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */
604	#define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */
605	/* 32 to 38: reserved */
606	#define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */
607	/* 40: reserved */
608	#define IPV6CTL_MAXFRAGS 41 /* max fragments */
609	#define IPV6CTL_IFQ 42 /* ip6intrq node */
610	/* New entries should be added here from current IPV6CTL_MAXID value. */
611	/* to define items, should talk with KAME guys first, for BSD compatibility /
612	#define IPV6CTL_MAXID 43
613
614	#define IPV6CTL_NAMES { \
615	{ 0, 0 }, \
616	{ "forwarding", CTLTYPE_INT }, \
617	{ "redirect", CTLTYPE_INT }, \
618	{ "hlim", CTLTYPE_INT }, \
619	{ "mtu", CTLTYPE_INT }, \
620	{ "forwsrcrt", CTLTYPE_INT }, \
621	{ "stats", CTLTYPE_STRUCT }, \
622	{ 0, 0 }, \
623	{ "mrtproto", CTLTYPE_INT }, \
624	{ "maxfragpackets", CTLTYPE_INT }, \
625	{ "sourcecheck", CTLTYPE_INT }, \
626	{ "sourcecheck_logint", CTLTYPE_INT }, \
627	{ "accept_rtadv", CTLTYPE_INT }, \
628	{ "keepfaith", CTLTYPE_INT }, \
629	{ "log_interval", CTLTYPE_INT }, \
630	{ "hdrnestlimit", CTLTYPE_INT }, \
631	{ "dad_count", CTLTYPE_INT }, \
632	{ "auto_flowlabel", CTLTYPE_INT }, \
633	{ "defmcasthlim", CTLTYPE_INT }, \
634	{ "gifhlim", CTLTYPE_INT }, \
635	{ "kame_version", CTLTYPE_STRING }, \
636	{ "use_deprecated", CTLTYPE_INT }, \
637	{ "rr_prune", CTLTYPE_INT }, \
638	{ 0, 0 }, \
639	{ "v6only", CTLTYPE_INT }, \
640	{ 0, 0 }, \
641	{ 0, 0 }, \
642	{ 0, 0 }, \
643	{ "anonportmin", CTLTYPE_INT }, \
644	{ "anonportmax", CTLTYPE_INT }, \
645	{ "lowportmin", CTLTYPE_INT }, \
646	{ "lowportmax", CTLTYPE_INT }, \
647	{ 0, 0 }, \
648	{ 0, 0 }, \
649	{ 0, 0 }, \
650	{ 0, 0 }, \
651	{ 0, 0 }, \
652	{ 0, 0 }, \
653	{ 0, 0 }, \
654	{ 0, 0 }, \
655	{ 0, 0 }, \
656	{ "maxfrags", CTLTYPE_INT }, \
657	{ "ifq", CTLTYPE_NODE }, \
658	}
659
660	#endif /* _NETBSD_SOURCE */
661
662	#ifdef _KERNEL
663	struct cmsghdr;
664
665	/*
666	* in6_cksum_phdr:
667	*
668	* Compute significant parts of the IPv6 checksum pseudo-header
669	* for use in a delayed TCP/UDP checksum calculation.
670	*
671	* Args:
672	*
673	* src Source IPv6 address
674	* dst Destination IPv6 address
675	* len htonl(proto-hdr-len)
676	* nxt htonl(next-proto-number)
677	*
678	* NOTE: We expect the src and dst addresses to be 16-bit
679	* aligned!
680	*/
681	static __inline u_int16_t __attribute__((__unused__))
682	in6_cksum_phdr(const struct in6_addr src, const struct in6_addr dst,
683	u_int32_t len, u_int32_t nxt)
684	{
685	u_int32_t sum = 0;
686	const u_int16_t *w;
687
688	/LINTED/
689	w = (const u_int16_t *) src;
690	sum += w[0];
691	if (!IN6_IS_SCOPE_LINKLOCAL(src))
692	sum += w[1];
693	sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
694	sum += w[6]; sum += w[7];
695
696	/LINTED/
697	w = (const u_int16_t *) dst;
698	sum += w[0];
699	if (!IN6_IS_SCOPE_LINKLOCAL(dst))
700	sum += w[1];
701	sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
702	sum += w[6]; sum += w[7];
703
704	sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /& 0xffff/);
705
706	sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /& 0xffff/);
707
708	sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /& 0xffff/);
709
710	if (sum > 0xffff)
711	sum -= 0xffff;
712
713	return (sum);
714	}
715
716	struct mbuf;
717	struct ifnet;
718	int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
719	void in6_delayed_cksum __P((struct mbuf *));
720	int in6_localaddr __P((struct in6_addr *));
721	int in6_addrscope __P((struct in6_addr *));
722	struct in6_ifaddr in6_ifawithifp __P((struct ifnet , struct in6_addr *));
723	extern void in6_if_up __P((struct ifnet *));
724	#ifndef __FreeBSD__
725	extern int in6_src_sysctl __P((void , size_t , void *, size_t));
726	#endif
727	extern void addrsel_policy_init __P((void));
728	extern u_char ip6_protox[];
729
730	#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
731	#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
732	#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
733	#endif /* _KERNEL */
734
735	#if defined(_NETBSD_SOURCE)
736
737	#include <machine/ansi.h>
738
739	#ifdef _EFI_SIZE_T_
740	typedef _EFI_SIZE_T_ size_t;
741	#define _SIZE_T
742	#undef _EFI_SIZE_T_
743	#undef _BSD_SIZE_T_
744	#endif
745
746	#include <sys/EfiCdefs.h>
747
748	__BEGIN_DECLS
749	struct cmsghdr;
750
751	extern int inet6_option_space (int);
752	extern int inet6_option_init (void , struct cmsghdr *, int);
753	extern int inet6_option_append (struct cmsghdr , const uint8_t ,
754	int, int);
755	extern uint8_t inet6_option_alloc (struct cmsghdr , int, int, int);
756	extern int inet6_option_next (const struct cmsghdr , uint8_t *);
757	extern int inet6_option_find (const struct cmsghdr , uint8_t *, int);
758
759	extern size_t inet6_rthdr_space (int, int);
760	extern struct cmsghdr inet6_rthdr_init (void , int);
761	extern int inet6_rthdr_add (struct cmsghdr , const struct in6_addr ,
762	unsigned int);
763	extern int inet6_rthdr_lasthop (struct cmsghdr *, unsigned int);
764	#if 0 /* not implemented yet */
765	extern int inet6_rthdr_reverse (const struct cmsghdr , struct cmsghdr );
766	#endif
767	extern int inet6_rthdr_segments (const struct cmsghdr *);
768	extern struct in6_addr inet6_rthdr_getaddr (struct cmsghdr , int);
769	extern int inet6_rthdr_getflags (const struct cmsghdr *, int);
770
771	extern int inet6_opt_init (void *, socklen_t);
772	extern int inet6_opt_append (void *, socklen_t, int, uint8_t,
773	socklen_t, uint8_t, void **);
774	extern int inet6_opt_finish (void *, socklen_t, int);
775	extern int inet6_opt_set_val (void , int, void , socklen_t);
776
777	extern int inet6_opt_next (void , socklen_t, int, uint8_t ,
778	socklen_t , void *);
779	extern int inet6_opt_find (void *, socklen_t, int, uint8_t,
780	socklen_t , void *);
781	extern int inet6_opt_get_val (void , int, void , socklen_t);
782	extern socklen_t inet6_rth_space (int, int);
783	extern void inet6_rth_init (void , socklen_t, int, int);
784	extern int inet6_rth_add (void , const struct in6_addr );
785	extern int inet6_rth_reverse (const void , void );
786	extern int inet6_rth_segments (const void *);
787	extern struct in6_addr inet6_rth_getaddr (const void , int);
788	__END_DECLS
789	#endif /* _NETBSD_SOURCE */
790
791	#endif /* !_NETINET6_IN6_H_ */

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