FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6.h
1 /*-
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $
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 * 4. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)in.h 8.3 (Berkeley) 1/3/94
61 * $FreeBSD: releng/6.4/sys/netinet6/in6.h 183529 2008-10-02 00:32:59Z cperciva $
62 */
63
64 #ifndef __KAME_NETINET_IN_H_INCLUDED_
65 #error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
66 #endif
67
68 #ifndef _NETINET6_IN6_H_
69 #define _NETINET6_IN6_H_
70
71 /*
72 * Identification of the network protocol stack
73 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
74 * has the table of implementation/integration differences.
75 */
76 #define __KAME__
77 #define __KAME_VERSION "FreeBSD"
78
79 /*
80 * IPv6 port allocation rules should mirror the IPv4 rules and are controlled
81 * by the the net.inet.ip.portrange sysctl tree. The following defines exist
82 * for compatibility with userland applications that need them.
83 */
84 #if __BSD_VISIBLE
85 #define IPV6PORT_RESERVED 1024
86 #define IPV6PORT_ANONMIN 49152
87 #define IPV6PORT_ANONMAX 65535
88 #define IPV6PORT_RESERVEDMIN 600
89 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
90 #endif
91
92 /*
93 * IPv6 address
94 */
95 struct in6_addr {
96 union {
97 uint8_t __u6_addr8[16];
98 uint16_t __u6_addr16[8];
99 uint32_t __u6_addr32[4];
100 } __u6_addr; /* 128-bit IP6 address */
101 };
102
103 #define s6_addr __u6_addr.__u6_addr8
104 #ifdef _KERNEL /* XXX nonstandard */
105 #define s6_addr8 __u6_addr.__u6_addr8
106 #define s6_addr16 __u6_addr.__u6_addr16
107 #define s6_addr32 __u6_addr.__u6_addr32
108 #endif
109
110 #define INET6_ADDRSTRLEN 46
111
112 /*
113 * XXX missing POSIX.1-2001 macro IPPROTO_IPV6.
114 */
115
116 /*
117 * Socket address for IPv6
118 */
119 #if __BSD_VISIBLE
120 #define SIN6_LEN
121 #endif
122
123 struct sockaddr_in6 {
124 uint8_t sin6_len; /* length of this struct */
125 sa_family_t sin6_family; /* AF_INET6 */
126 in_port_t sin6_port; /* Transport layer port # */
127 uint32_t sin6_flowinfo; /* IP6 flow information */
128 struct in6_addr sin6_addr; /* IP6 address */
129 uint32_t sin6_scope_id; /* scope zone index */
130 };
131
132 /*
133 * Local definition for masks
134 */
135 #ifdef _KERNEL /* XXX nonstandard */
136 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
137 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
138 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
139 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
140 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
141 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
142 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
143 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
144 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
145 #endif
146
147 #ifdef _KERNEL
148 extern const struct sockaddr_in6 sa6_any;
149
150 extern const struct in6_addr in6mask0;
151 extern const struct in6_addr in6mask32;
152 extern const struct in6_addr in6mask64;
153 extern const struct in6_addr in6mask96;
154 extern const struct in6_addr in6mask128;
155 #endif /* _KERNEL */
156
157 /*
158 * Macros started with IPV6_ADDR is KAME local
159 */
160 #ifdef _KERNEL /* XXX nonstandard */
161 #if _BYTE_ORDER == _BIG_ENDIAN
162 #define IPV6_ADDR_INT32_ONE 1
163 #define IPV6_ADDR_INT32_TWO 2
164 #define IPV6_ADDR_INT32_MNL 0xff010000
165 #define IPV6_ADDR_INT32_MLL 0xff020000
166 #define IPV6_ADDR_INT32_SMP 0x0000ffff
167 #define IPV6_ADDR_INT16_ULL 0xfe80
168 #define IPV6_ADDR_INT16_USL 0xfec0
169 #define IPV6_ADDR_INT16_MLL 0xff02
170 #elif _BYTE_ORDER == _LITTLE_ENDIAN
171 #define IPV6_ADDR_INT32_ONE 0x01000000
172 #define IPV6_ADDR_INT32_TWO 0x02000000
173 #define IPV6_ADDR_INT32_MNL 0x000001ff
174 #define IPV6_ADDR_INT32_MLL 0x000002ff
175 #define IPV6_ADDR_INT32_SMP 0xffff0000
176 #define IPV6_ADDR_INT16_ULL 0x80fe
177 #define IPV6_ADDR_INT16_USL 0xc0fe
178 #define IPV6_ADDR_INT16_MLL 0x02ff
179 #endif
180 #endif
181
182 /*
183 * Definition of some useful macros to handle IP6 addresses
184 */
185 #if __BSD_VISIBLE
186 #define IN6ADDR_ANY_INIT \
187 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
188 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
189 #define IN6ADDR_LOOPBACK_INIT \
190 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
191 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
192 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
193 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
194 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
195 #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
196 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
197 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
198 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
199 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
200 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
201 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
202 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
203 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
204 #endif
205
206 extern const struct in6_addr in6addr_any;
207 extern const struct in6_addr in6addr_loopback;
208 #if __BSD_VISIBLE
209 extern const struct in6_addr in6addr_nodelocal_allnodes;
210 extern const struct in6_addr in6addr_linklocal_allnodes;
211 extern const struct in6_addr in6addr_linklocal_allrouters;
212 #endif
213
214 /*
215 * Equality
216 * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
217 * does not supply memcmp(). For userland memcmp() is preferred as it is
218 * in ANSI standard.
219 */
220 #ifdef _KERNEL
221 #define IN6_ARE_ADDR_EQUAL(a, b) \
222 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
223 #else
224 #if __BSD_VISIBLE
225 #define IN6_ARE_ADDR_EQUAL(a, b) \
226 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
227 #endif
228 #endif
229
230 /*
231 * Unspecified
232 */
233 #define IN6_IS_ADDR_UNSPECIFIED(a) \
234 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
235 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
236 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
237 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
238
239 /*
240 * Loopback
241 */
242 #define IN6_IS_ADDR_LOOPBACK(a) \
243 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
244 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
245 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
246 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
247
248 /*
249 * IPv4 compatible
250 */
251 #define IN6_IS_ADDR_V4COMPAT(a) \
252 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
253 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
254 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
255 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
256 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
257
258 /*
259 * Mapped
260 */
261 #define IN6_IS_ADDR_V4MAPPED(a) \
262 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
263 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
264 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
265
266 /*
267 * KAME Scope Values
268 */
269
270 #ifdef _KERNEL /* XXX nonstandard */
271 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
272 #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
273 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
274 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
275 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
276 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
277 #else
278 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
279 #define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
280 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
281 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
282 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
283 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
284 #endif
285
286 /*
287 * Unicast Scope
288 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
289 */
290 #define IN6_IS_ADDR_LINKLOCAL(a) \
291 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
292 #define IN6_IS_ADDR_SITELOCAL(a) \
293 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
294
295 /*
296 * Multicast
297 */
298 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
299
300 #ifdef _KERNEL /* XXX nonstandard */
301 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
302 #else
303 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
304 #endif
305
306 /*
307 * Multicast Scope
308 */
309 #ifdef _KERNEL /* refers nonstandard items */
310 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
311 (IN6_IS_ADDR_MULTICAST(a) && \
312 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
313 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
314 (IN6_IS_ADDR_MULTICAST(a) && \
315 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
316 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
317 (IN6_IS_ADDR_MULTICAST(a) && \
318 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
319 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
320 (IN6_IS_ADDR_MULTICAST(a) && \
321 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
322 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
323 (IN6_IS_ADDR_MULTICAST(a) && \
324 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
325 #define IN6_IS_ADDR_MC_GLOBAL(a) \
326 (IN6_IS_ADDR_MULTICAST(a) && \
327 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
328 #else
329 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
330 (IN6_IS_ADDR_MULTICAST(a) && \
331 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
332 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
333 (IN6_IS_ADDR_MULTICAST(a) && \
334 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
335 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
336 (IN6_IS_ADDR_MULTICAST(a) && \
337 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
338 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
339 (IN6_IS_ADDR_MULTICAST(a) && \
340 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
341 #define IN6_IS_ADDR_MC_GLOBAL(a) \
342 (IN6_IS_ADDR_MULTICAST(a) && \
343 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
344 #endif
345
346 #ifdef _KERNEL /* nonstandard */
347 /*
348 * KAME Scope
349 */
350 #define IN6_IS_SCOPE_LINKLOCAL(a) \
351 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
352 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
353
354 #define IFA6_IS_DEPRECATED(a) \
355 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
356 (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
357 (a)->ia6_lifetime.ia6t_pltime)
358 #define IFA6_IS_INVALID(a) \
359 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
360 (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
361 (a)->ia6_lifetime.ia6t_vltime)
362 #endif /* _KERNEL */
363
364 /*
365 * IP6 route structure
366 */
367 #if __BSD_VISIBLE
368 struct route_in6 {
369 struct rtentry *ro_rt;
370 struct sockaddr_in6 ro_dst;
371 };
372 #endif
373
374 /*
375 * Options for use with [gs]etsockopt at the IPV6 level.
376 * First word of comment is data type; bool is stored in int.
377 */
378 /* no hdrincl */
379 #if 0 /* the followings are relic in IPv4 and hence are disabled */
380 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
381 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
382 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
383 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
384 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
385 #endif
386 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
387 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
388 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
389 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
390 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
391 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
392 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
393 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
394 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
395 /* RFC2292 options */
396 #ifdef _KERNEL
397 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
398 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
399 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
400 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
401 #define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
402 #define IPV6_2292RTHDR 24 /* bool; routing header */
403 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
404 #endif
405
406 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
407 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
408 #ifndef _KERNEL
409 #define IPV6_BINDV6ONLY IPV6_V6ONLY
410 #endif
411
412 #if 1 /* IPSEC */
413 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
414 #endif
415 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
416
417 #if 1 /* IPV6FIREWALL */
418 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
419 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
420 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
421 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
422 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
423 #endif
424
425 /* new socket options introduced in RFC3542 */
426 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
427
428 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
429 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
430 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */
431 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
432 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
433 #ifdef _KERNEL
434 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
435 #endif
436
437 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
438 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
439
440 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
441 4 bytes int; MTU notification (cmsg) */
442 #if 0 /*obsoleted during 2292bis -> 3542*/
443 #define IPV6_REACHCONF 45 /* no data; ND reachability confirm
444 (cmsg only/not in of RFC3542) */
445 #endif
446
447 /* more new socket options introduced in RFC3542 */
448 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
449 #define IPV6_HOPLIMIT 47 /* int; send hop limit */
450 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
451 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
452 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
453 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
454 #if 0
455 #define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options */
456 /* obsoleted by RFC3542 */
457 #endif
458
459 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
460
461 #define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
462
463 #define IPV6_TCLASS 61 /* int; send traffic class value */
464 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
465
466 #define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
467 * the source address.
468 */
469
470 /* to define items, should talk with KAME guys first, for *BSD compatibility */
471
472 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
473 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
474 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
475
476 /*
477 * Defaults and limits for options
478 */
479 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
480 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
481
482 /*
483 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
484 */
485 struct ipv6_mreq {
486 struct in6_addr ipv6mr_multiaddr;
487 unsigned int ipv6mr_interface;
488 };
489
490 /*
491 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
492 */
493 struct in6_pktinfo {
494 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
495 unsigned int ipi6_ifindex; /* send/recv interface index */
496 };
497
498 /*
499 * Control structure for IPV6_RECVPATHMTU socket option.
500 */
501 struct ip6_mtuinfo {
502 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
503 uint32_t ip6m_mtu;
504 };
505
506 /*
507 * Argument for IPV6_PORTRANGE:
508 * - which range to search when port is unspecified at bind() or connect()
509 */
510 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
511 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
512 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
513
514 #if __BSD_VISIBLE
515 /*
516 * Definitions for inet6 sysctl operations.
517 *
518 * Third level is protocol number.
519 * Fourth level is desired variable within that protocol.
520 */
521 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
522
523 /*
524 * Names for IP sysctl objects
525 */
526 #define IPV6CTL_FORWARDING 1 /* act as router */
527 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
528 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
529 #ifdef notyet
530 #define IPV6CTL_DEFMTU 4 /* default MTU */
531 #endif
532 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
533 #define IPV6CTL_STATS 6 /* stats */
534 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
535 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
536 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
537 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
538 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
539 #define IPV6CTL_ACCEPT_RTADV 12
540 #define IPV6CTL_KEEPFAITH 13
541 #define IPV6CTL_LOG_INTERVAL 14
542 #define IPV6CTL_HDRNESTLIMIT 15
543 #define IPV6CTL_DAD_COUNT 16
544 #define IPV6CTL_AUTO_FLOWLABEL 17
545 #define IPV6CTL_DEFMCASTHLIM 18
546 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
547 #define IPV6CTL_KAME_VERSION 20
548 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
549 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
550 #if 0 /* obsolete */
551 #define IPV6CTL_MAPPED_ADDR 23
552 #endif
553 #define IPV6CTL_V6ONLY 24
554 #define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
555 #define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
556 #define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
557
558 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
559 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
560 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
561 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
562 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
563 #define IPV6CTL_PREFER_TEMPADDR 37 /* prefer temporary addr as src */
564 #define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
565 #define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */
566
567 #define IPV6CTL_MAXFRAGS 41 /* max fragments */
568 #if 0
569 #define IPV6CTL_IFQ 42 /* ip6intrq node */
570 #define IPV6CTL_ISATAPRTR 43 /* isatap router */
571 #endif
572 #define IPV6CTL_MCAST_PMTU 44 /* enable pMTU discovery for multicast? */
573
574 /* New entries should be added here from current IPV6CTL_MAXID value. */
575 /* to define items, should talk with KAME guys first, for *BSD compatibility */
576 #define IPV6CTL_STEALTH 45
577 #define IPV6CTL_RTHDR0_ALLOWED 46
578 #define ICMPV6CTL_ND6_ONLINKNSRFC4861 47
579 #define IPV6CTL_MAXID 48
580 #endif /* __BSD_VISIBLE */
581
582 /*
583 * Redefinition of mbuf flags
584 */
585 #define M_AUTHIPHDR M_PROTO2
586 #define M_DECRYPTED M_PROTO3
587 #define M_LOOP M_PROTO4
588 #define M_AUTHIPDGM M_PROTO5
589
590 #ifdef _KERNEL
591 struct cmsghdr;
592
593 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
594 int in6_localaddr __P((struct in6_addr *));
595 int in6_addrscope __P((struct in6_addr *));
596 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
597 extern void in6_if_up __P((struct ifnet *));
598 struct sockaddr;
599 extern u_char ip6_protox[];
600
601 void in6_sin6_2_sin __P((struct sockaddr_in *sin,
602 struct sockaddr_in6 *sin6));
603 void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
604 struct sockaddr_in6 *sin6));
605 void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
606 void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
607 extern void addrsel_policy_init __P((void));
608
609 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
610 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
611 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
612
613 extern int (*faithprefix_p)(struct in6_addr *);
614 #endif /* _KERNEL */
615
616 #ifndef _SIZE_T_DECLARED
617 typedef __size_t size_t;
618 #define _SIZE_T_DECLARED
619 #endif
620
621 #ifndef _SOCKLEN_T_DECLARED
622 typedef __socklen_t socklen_t;
623 #define _SOCKLEN_T_DECLARED
624 #endif
625
626 #if __BSD_VISIBLE
627
628 __BEGIN_DECLS
629 struct cmsghdr;
630
631 extern int inet6_option_space __P((int));
632 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
633 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *,
634 int, int));
635 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
636 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **));
637 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int));
638
639 extern size_t inet6_rthdr_space __P((int, int));
640 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
641 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
642 unsigned int));
643 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
644 #if 0 /* not implemented yet */
645 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
646 #endif
647 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
648 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
649 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
650
651 extern int inet6_opt_init __P((void *, socklen_t));
652 extern int inet6_opt_append __P((void *, socklen_t, int, uint8_t, socklen_t,
653 uint8_t, void **));
654 extern int inet6_opt_finish __P((void *, socklen_t, int));
655 extern int inet6_opt_set_val __P((void *, int, void *, socklen_t));
656
657 extern int inet6_opt_next __P((void *, socklen_t, int, uint8_t *, socklen_t *,
658 void **));
659 extern int inet6_opt_find __P((void *, socklen_t, int, uint8_t, socklen_t *,
660 void **));
661 extern int inet6_opt_get_val __P((void *, int, void *, socklen_t));
662 extern socklen_t inet6_rth_space __P((int, int));
663 extern void *inet6_rth_init __P((void *, socklen_t, int, int));
664 extern int inet6_rth_add __P((void *, const struct in6_addr *));
665 extern int inet6_rth_reverse __P((const void *, void *));
666 extern int inet6_rth_segments __P((const void *));
667 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
668 __END_DECLS
669
670 #endif /* __BSD_VISIBLE */
671
672 #endif /* !_NETINET6_IN6_H_ */
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