inet6: Limit the # of fragments in addition to the # of fragmented packets
[dragonfly.git] / sys / netinet6 / in6.h
CommitLineData
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1/* $FreeBSD: src/sys/netinet6/in6.h,v 1.7.2.7 2002/08/01 19:38:50 ume Exp $ */
2/* $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $ */
3
4/*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33/*
34 * Copyright (c) 1982, 1986, 1990, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by the University of
48 * California, Berkeley and its contributors.
49 * 4. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 *
65 * @(#)in.h 8.3 (Berkeley) 1/3/94
66 */
67
68#ifndef __KAME_NETINET_IN_H_INCLUDED_
69#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
70#endif
71
72#ifndef _NETINET6_IN6_H_
73#define _NETINET6_IN6_H_
74
75/*
76 * Identification of the network protocol stack
77 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
78 * has the table of implementation/integration differences.
79 */
80#define __KAME__
81#define __KAME_VERSION "20010528/FreeBSD"
82
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83#ifndef _SOCKLEN_T_DECLARED
84#define _SOCKLEN_T_DECLARED
85typedef __socklen_t socklen_t;
86#endif
87
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88/*
89 * Local port number conventions:
90 *
91 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
92 * unless a kernel is compiled with IPNOPRIVPORTS defined.
93 *
94 * When a user does a bind(2) or connect(2) with a port number of zero,
95 * a non-conflicting local port address is chosen.
96 *
97 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
98 * that is settable by sysctl(3); net.inet.ip.anonportmin and
99 * net.inet.ip.anonportmax respectively.
100 *
101 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
102 * default assignment range.
103 *
104 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
105 *
106 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
107 * and exists only for FreeBSD compatibility purposes.
108 *
109 * The value IP_PORTRANGE_LOW changes the range to the "low" are
110 * that is (by convention) restricted to privileged processes.
111 * This convention is based on "vouchsafe" principles only.
112 * It is only secure if you trust the remote host to restrict these ports.
113 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
114 */
115
116#define IPV6PORT_RESERVED 1024
117#define IPV6PORT_ANONMIN 49152
118#define IPV6PORT_ANONMAX 65535
119#define IPV6PORT_RESERVEDMIN 600
120#define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
121
122/*
123 * IPv6 address
124 */
cca780f8 125#ifndef _STRUCT_IN6_ADDR_DECLARED
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126struct in6_addr {
127 union {
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128 uint8_t __u6_addr8[16];
129 uint16_t __u6_addr16[8];
130 uint32_t __u6_addr32[4];
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131 } __u6_addr; /* 128-bit IP6 address */
132};
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133#define _STRUCT_IN6_ADDR_DECLARED
134#endif
984263bc 135
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136#define s6_addr __u6_addr.__u6_addr8
137#define _s6_addr16 __u6_addr.__u6_addr16 /* internal use */
138#define _s6_addr32 __u6_addr.__u6_addr32 /* internal use */
8514520e 139#if __BSD_VISIBLE /* XXX nonstandard */
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140#define s6_addr8 __u6_addr.__u6_addr8
141#define s6_addr16 __u6_addr.__u6_addr16
142#define s6_addr32 __u6_addr.__u6_addr32
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143#endif
144
145#define INET6_ADDRSTRLEN 46
146
147/*
148 * Socket address for IPv6
149 */
150#ifndef _XOPEN_SOURCE
151#define SIN6_LEN
152#endif
153struct sockaddr_in6 {
77db7802 154 uint8_t sin6_len; /* length of this struct(sa_family_t)*/
1fb34cd6 155 sa_family_t sin6_family; /* AF_INET6 */
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156 uint16_t sin6_port; /* Transport layer port # (in_port_t)*/
157 uint32_t sin6_flowinfo; /* IP6 flow information */
984263bc 158 struct in6_addr sin6_addr; /* IP6 address */
77db7802 159 uint32_t sin6_scope_id; /* scope zone index */
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160};
161
162/*
163 * Local definition for masks
164 */
165#ifdef _KERNEL /* XXX nonstandard */
166#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
167#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
168 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
169#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
170 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
171#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
172 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
173#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
174 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
175#endif
176
177#ifdef _KERNEL
178extern const struct sockaddr_in6 sa6_any;
179
180extern const struct in6_addr in6mask0;
181extern const struct in6_addr in6mask32;
182extern const struct in6_addr in6mask64;
183extern const struct in6_addr in6mask96;
184extern const struct in6_addr in6mask128;
185#endif /* _KERNEL */
186
187/*
188 * Macros started with IPV6_ADDR is KAME local
189 */
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190#if BYTE_ORDER == BIG_ENDIAN
191#define _IPV6_ADDR_INT16_UL_MASK 0xffc0
192#define _IPV6_ADDR_INT16_ULL 0xfe80
193#define _IPV6_ADDR_INT16_USL 0xfec0
194#else
195#define _IPV6_ADDR_INT16_UL_MASK 0xc0ff
196#define _IPV6_ADDR_INT16_ULL 0x80fe
197#define _IPV6_ADDR_INT16_USL 0xc0fe
198#endif
199
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200#ifdef _KERNEL /* XXX nonstandard */
201#if BYTE_ORDER == BIG_ENDIAN
202#define IPV6_ADDR_INT32_ONE 1
203#define IPV6_ADDR_INT32_TWO 2
204#define IPV6_ADDR_INT32_MNL 0xff010000
205#define IPV6_ADDR_INT32_MLL 0xff020000
206#define IPV6_ADDR_INT32_SMP 0x0000ffff
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207#define IPV6_ADDR_INT16_MLL 0xff02
208#elif BYTE_ORDER == LITTLE_ENDIAN
209#define IPV6_ADDR_INT32_ONE 0x01000000
210#define IPV6_ADDR_INT32_TWO 0x02000000
211#define IPV6_ADDR_INT32_MNL 0x000001ff
212#define IPV6_ADDR_INT32_MLL 0x000002ff
213#define IPV6_ADDR_INT32_SMP 0xffff0000
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214#define IPV6_ADDR_INT16_MLL 0x02ff
215#endif
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216#define IPV6_ADDR_INT16_ULL _IPV6_ADDR_INT16_ULL
217#define IPV6_ADDR_INT16_USL _IPV6_ADDR_INT16_USL
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218#endif
219
220/*
221 * Definition of some useful macros to handle IP6 addresses
222 */
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223#define IN6ADDR_ANY_INIT \
224 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
984263bc 225 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
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226#define IN6ADDR_LOOPBACK_INIT \
227 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
984263bc 228 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
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229#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
230 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
984263bc 231 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
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232#define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
233 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
234 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
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235#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
236 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
984263bc 237 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
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238#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
239 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
984263bc 240 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
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241#define IN6ADDR_LINKLOCAL_ALLMDNS_INIT \
242 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
243 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfb }}}
984263bc 244
15cc6e06 245#ifdef _KERNEL
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246extern const struct in6_addr kin6addr_any;
247extern const struct in6_addr kin6addr_loopback;
248extern const struct in6_addr kin6addr_nodelocal_allnodes;
249extern const struct in6_addr kin6addr_linklocal_allnodes;
250extern const struct in6_addr kin6addr_linklocal_allrouters;
15cc6e06 251#else
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252extern const struct in6_addr in6addr_any;
253extern const struct in6_addr in6addr_loopback;
254extern const struct in6_addr in6addr_nodelocal_allnodes;
255extern const struct in6_addr in6addr_linklocal_allnodes;
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256#endif
257
77db7802 258#define IN6_ARE_ADDR_EQUAL(a, b) \
984263bc 259 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
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260
261#ifdef _KERNEL /* non standard */
262/* see if two addresses are equal in a scope-conscious manner. */
263#define SA6_ARE_ADDR_EQUAL(a, b) \
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264 (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
265 (a)->sin6_scope_id == (b)->sin6_scope_id) && \
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266 (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
267#endif
268
269/*
270 * Unspecified
271 */
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272#define IN6_IS_ADDR_UNSPECIFIED(a) \
273 ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 && \
274 (a)->_s6_addr32[2] == 0 && (a)->_s6_addr32[3] == 0)
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275
276/*
277 * Loopback
278 */
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279#define IN6_IS_ADDR_LOOPBACK(a) \
280 ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 && \
281 (a)->_s6_addr32[2] == 0 && (a)->_s6_addr32[3] == ntohl(1))
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282
283/*
77db7802 284 * Mapped
984263bc 285 */
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286#define IN6_IS_ADDR_V4MAPPED(a) \
287 ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 && \
288 (a)->_s6_addr32[2] == ntohl(0x0000ffff))
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289
290/*
77db7802 291 * IPv4 compatible. Deprecated by RFC4291.
984263bc 292 */
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293#define IN6_IS_ADDR_V4COMPAT(a) \
294 ((a)->_s6_addr32[0] == 0 && \
295 (a)->_s6_addr32[1] == 0 && \
296 (a)->_s6_addr32[2] == 0 && \
297 (a)->_s6_addr32[3] != 0 && (a)->_s6_addr32[3] != ntohl(1))
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298
299/*
300 * KAME Scope Values
301 */
302
984263bc 303#define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
cb3deea5 304#define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
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305#define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
306#define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
307#define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
308#define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
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309
310#ifdef _KERNEL /* XXX nonstandard */
311#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
70224baa 312#define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
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313#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
314#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
315#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
316#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
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317#endif
318
319/*
320 * Unicast Scope
321 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
322 */
77db7802 323#define IN6_IS_ADDR_LINKLOCAL(a) \
ea60b7ba 324 (((a)->_s6_addr16[0] & _IPV6_ADDR_INT16_UL_MASK) == _IPV6_ADDR_INT16_ULL)
77db7802 325#define IN6_IS_ADDR_SITELOCAL(a) \
ea60b7ba 326 (((a)->_s6_addr16[0] & _IPV6_ADDR_INT16_UL_MASK) == _IPV6_ADDR_INT16_USL)
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327
328/*
329 * Multicast
330 */
331#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
984263bc 332#define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
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333#ifdef _KERNEL /* XXX nonstandard */
334#define IPV6_ADDR_MC_SCOPE(a) __IPV6_ADDR_MC_SCOPE(a)
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335#endif
336
337/*
338 * Multicast Scope
339 */
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340#define IN6_IS_ADDR_MC_NODELOCAL(a) \
341 (IN6_IS_ADDR_MULTICAST(a) && \
984263bc 342 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
77db7802 343
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344#define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
345 (IN6_IS_ADDR_MULTICAST(a) && \
346 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
347
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348#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
349 (IN6_IS_ADDR_MULTICAST(a) && \
984263bc 350 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
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351
352#define IN6_IS_ADDR_MC_SITELOCAL(a) \
353 (IN6_IS_ADDR_MULTICAST(a) && \
984263bc 354 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
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355
356#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
357 (IN6_IS_ADDR_MULTICAST(a) && \
984263bc 358 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
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359
360#define IN6_IS_ADDR_MC_GLOBAL(a) \
361 (IN6_IS_ADDR_MULTICAST(a) && \
984263bc 362 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
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363
364#ifdef _KERNEL /* nonstandard */
365/*
366 * KAME Scope
367 */
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368#define IN6_IS_SCOPE_LINKLOCAL(a) \
369 (IN6_IS_ADDR_LINKLOCAL(a) || IN6_IS_ADDR_MC_LINKLOCAL(a))
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370#define IN6_IS_SCOPE_EMBED(a) \
371 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
372 (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
373 (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
374
984263bc 375
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376#define IFA6_IS_DEPRECATED(a) \
377 ((a)->ia6_lifetime.ia6t_preferred != 0 && \
cec73927 378 (a)->ia6_lifetime.ia6t_preferred < time_uptime)
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379
380#define IFA6_IS_INVALID(a) \
381 ((a)->ia6_lifetime.ia6t_expire != 0 && \
cec73927 382 (a)->ia6_lifetime.ia6t_expire < time_uptime)
77db7802 383#endif
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384
385/*
386 * IP6 route structure
387 */
388#ifndef _XOPEN_SOURCE
389struct route_in6 {
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390 struct rtentry *ro_rt;
391 struct sockaddr_in6 ro_dst;
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392};
393#endif
394
395/*
396 * Options for use with [gs]etsockopt at the IPV6 level.
397 * First word of comment is data type; bool is stored in int.
398 */
399/* no hdrincl */
400#if 0 /* the followings are relic in IPv4 and hence are disabled */
401#define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
402#define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
403#define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
404#define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
405#define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
406#endif
407#define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
408#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
409#define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
410#define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
411#define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
412#define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
413#define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
414#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
415#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
416/* RFC2292 options */
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417#ifdef _KERNEL
418#define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
419#define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
420#define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
421#define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
422#define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
423#define IPV6_2292RTHDR 24 /* bool; routing header */
424#define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
425#endif
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426
427#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
428#define IPV6_V6ONLY 27 /* bool; only bind INET6 at wildcard bind */
429#ifndef _KERNEL
430#define IPV6_BINDV6ONLY IPV6_V6ONLY
431#endif
432
433#if 1 /* IPSEC */
434#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
435#endif
436#define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
437
438#if 1 /* IPV6FIREWALL */
439#define IPV6_FW_ADD 30 /* add a firewall rule to chain */
440#define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
441#define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
442#define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
443#define IPV6_FW_GET 34 /* get entire firewall rule chain */
444#endif
445
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446/*
447 * new socket options introduced in RFC3542
448 */
449#define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
450#define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
451#define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
452#define IPV6_RECVRTHDR 38 /* bool; recv routing header */
453#define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
454#define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
455#ifdef _KERNEL
456#define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
457#endif
458#define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
459#define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
460
461/* mtuinfo; get the current path MTU (sopt),
462 * 4 bytes int; MTU notification (cmsg)
463 */
464#define IPV6_PATHMTU 44
465#if 0 /*obsoleted during 2292bis -> 3542*/
466#define IPV6_REACHCONF 45 /* no data; ND reachability confirm
467 (cmsg only/not in of RFC3542) */
468#endif
469#define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
470#define IPV6_HOPLIMIT 47 /* int; send hop limit */
471#define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
472#define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
473#define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
474#define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
475#define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options, this is obsoleted by RFC3542 */
476
477#define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
478
479#define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
480
481#define IPV6_TCLASS 61 /* int; send traffic class value */
482#define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
483
484#define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
485 * the source address.
486 */
487/*
488 * The following option is private; do not use it from user applications.
489 * It is deliberately defined to the same value as IP_MSFILTER.
490 */
491#define IPV6_MSFILTER 74 /* struct __msfilterreq;
492 * set/get multicast source filter list.
493 */
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494/* to define items, should talk with KAME guys first, for *BSD compatibility */
495
496#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
497#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
fa690d60 498#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
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499
500/*
501 * Defaults and limits for options
502 */
503#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
504#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
505
506/*
507 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
508 */
509struct ipv6_mreq {
510 struct in6_addr ipv6mr_multiaddr;
511 unsigned int ipv6mr_interface;
512};
513
514/*
515 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
516 */
517struct in6_pktinfo {
518 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
519 unsigned int ipi6_ifindex; /* send/recv interface index */
520};
521
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522/*
523 * New Control structure for IPV6_RECVPATHMTU socket option introduced in RFC3542.
524 */
525struct ip6_mtuinfo {
526 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
527 uint32_t ip6m_mtu;
528};
529
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530/*
531 * Argument for IPV6_PORTRANGE:
532 * - which range to search when port is unspecified at bind() or connect()
533 */
534#define IPV6_PORTRANGE_DEFAULT 0 /* default range */
535#define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
536#define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
537
538#ifndef _XOPEN_SOURCE
539/*
540 * Definitions for inet6 sysctl operations.
541 *
542 * Third level is protocol number.
543 * Fourth level is desired variable within that protocol.
544 */
545#define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
546
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547/*
548 * Names for IP sysctl objects
549 */
550#define IPV6CTL_FORWARDING 1 /* act as router */
551#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
552#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
553#ifdef notyet
554#define IPV6CTL_DEFMTU 4 /* default MTU */
555#endif
556#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
557#define IPV6CTL_STATS 6 /* stats */
558#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
559#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
560#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
561#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
562#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
563#define IPV6CTL_ACCEPT_RTADV 12
564#define IPV6CTL_KEEPFAITH 13
565#define IPV6CTL_LOG_INTERVAL 14
566#define IPV6CTL_HDRNESTLIMIT 15
567#define IPV6CTL_DAD_COUNT 16
568#define IPV6CTL_AUTO_FLOWLABEL 17
569#define IPV6CTL_DEFMCASTHLIM 18
570#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
571#define IPV6CTL_KAME_VERSION 20
572#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
573#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
574#if 0 /* obsolete */
575#define IPV6CTL_MAPPED_ADDR 23
984263bc 576#define IPV6CTL_V6ONLY 24
2fd1df03 577#endif
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578#define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
579#define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
580#define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
581
582#define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
583#define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
584#define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
585#define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
586#define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
587
02809d29 588#define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
74ceb998 589#define IPV6CTL_MINHLIM 39 /* minimum Hop-Limit */
02809d29 590
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591#define IPV6CTL_MAXFRAGS 41 /* max fragments */
592
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593/* New entries should be added here from current IPV6CTL_MAXID value. */
594/* to define items, should talk with KAME guys first, for *BSD compatibility */
984263bc 595
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596#define ICMPV6CTL_ND6_ONLINKNSRFC4861 47
597#define IPV6CTL_MAXID 48
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598#endif /* !_XOPEN_SOURCE */
599
600/*
601 * Redefinition of mbuf flags
602 */
603#define M_AUTHIPHDR M_PROTO2
604#define M_DECRYPTED M_PROTO3
605#define M_LOOP M_PROTO4
606#define M_AUTHIPDGM M_PROTO5
607
608#ifdef _KERNEL
1bd40720 609
1bd40720 610struct ifnet;
77db7802 611struct mbuf;
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612struct sockaddr;
613struct sockaddr_in;
614struct sockaddr_in6;
984263bc 615
77db7802 616int in6_cksum (struct mbuf *, uint8_t, uint32_t, uint32_t);
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617int in6_localaddr (struct in6_addr *);
618int in6_addrscope (struct in6_addr *);
cfd79120 619struct in6_ifaddr *in6_ifawithscope (struct ifnet *, struct in6_addr *, struct ucred *);
56d702cc 620struct in6_ifaddr *in6_ifawithifp (struct ifnet *, struct in6_addr *);
77db7802 621void in6_if_up (struct ifnet *);
984263bc 622
02809d29 623void addrsel_policy_init (void);
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624
625#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
626#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
627#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
628
77db7802 629extern int (*faithprefix_p)(struct in6_addr *);
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630#endif /* _KERNEL */
631
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632#include <sys/cdefs.h> /* for __BEGIN_DECLS and __END_DECLS */
633
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634__BEGIN_DECLS
635struct cmsghdr;
636
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637uint8_t *inet6_option_alloc (struct cmsghdr *, int, int, int);
638int inet6_option_append (struct cmsghdr *, const uint8_t *, int, int);
639int inet6_option_find (const struct cmsghdr *, uint8_t **, int);
640int inet6_option_init (void *, struct cmsghdr **, int);
641int inet6_option_next (const struct cmsghdr *, uint8_t **);
642int inet6_option_space (int);
643
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644int inet6_opt_append (void *, socklen_t, int, uint8_t, socklen_t, uint8_t, void **);
645int inet6_opt_find (void *, socklen_t, int, uint8_t, socklen_t *, void **);
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646int inet6_opt_finish (void *, socklen_t, int);
647int inet6_opt_get_val (void *, int, void *, socklen_t);
648int inet6_opt_init (void *, socklen_t);
649int inet6_opt_next (void *, socklen_t, int, uint8_t *, socklen_t *, void **);
650int inet6_opt_set_val (void *, int, void *, socklen_t);
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651
652int inet6_rth_add (void *, const struct in6_addr *);
653struct in6_addr *inet6_rth_getaddr (const void *, int);
23ac31f2 654void *inet6_rth_init (void *, socklen_t, int, int);
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655int inet6_rth_reverse (const void *, void *);
656int inet6_rth_segments (const void *);
23ac31f2 657socklen_t inet6_rth_space (int, int);
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658
659int inet6_rthdr_add (struct cmsghdr *, const struct in6_addr *,
660 unsigned int);
661struct in6_addr *inet6_rthdr_getaddr (struct cmsghdr *, int);
662int inet6_rthdr_getflags (const struct cmsghdr *, int);
663struct cmsghdr *inet6_rthdr_init (void *, int);
664int inet6_rthdr_lasthop (struct cmsghdr *, unsigned int);
665#if 0 /* not implemented yet */
666int inet6_rthdr_reverse (const struct cmsghdr *, struct cmsghdr *);
984263bc 667#endif
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668int inet6_rthdr_segments (const struct cmsghdr *);
669size_t inet6_rthdr_space (int, int);
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670__END_DECLS
671
672#endif /* !_NETINET6_IN6_H_ */