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