FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6.h
1 /* $FreeBSD$ */
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
83 /*
84 * Local port number conventions:
85 *
86 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
87 * unless a kernel is compiled with IPNOPRIVPORTS defined.
88 *
89 * When a user does a bind(2) or connect(2) with a port number of zero,
90 * a non-conflicting local port address is chosen.
91 *
92 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
93 * that is settable by sysctl(3); net.inet.ip.anonportmin and
94 * net.inet.ip.anonportmax respectively.
95 *
96 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
97 * default assignment range.
98 *
99 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
100 *
101 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
102 * and exists only for FreeBSD compatibility purposes.
103 *
104 * The value IP_PORTRANGE_LOW changes the range to the "low" are
105 * that is (by convention) restricted to privileged processes.
106 * This convention is based on "vouchsafe" principles only.
107 * It is only secure if you trust the remote host to restrict these ports.
108 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
109 */
110
111 #define IPV6PORT_RESERVED 1024
112 #define IPV6PORT_ANONMIN 49152
113 #define IPV6PORT_ANONMAX 65535
114 #define IPV6PORT_RESERVEDMIN 600
115 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
116
117 /*
118 * IPv6 address
119 */
120 struct in6_addr {
121 union {
122 u_int8_t __u6_addr8[16];
123 u_int16_t __u6_addr16[8];
124 u_int32_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 #ifndef _XOPEN_SOURCE
141 #define SIN6_LEN
142 #endif
143 struct sockaddr_in6 {
144 u_int8_t sin6_len; /* length of this struct(sa_family_t)*/
145 u_int8_t sin6_family; /* AF_INET6 (sa_family_t) */
146 u_int16_t sin6_port; /* Transport layer port # (in_port_t)*/
147 u_int32_t sin6_flowinfo; /* IP6 flow information */
148 struct in6_addr sin6_addr; /* IP6 address */
149 u_int32_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 #ifdef _KERNEL /* non standard */
242 /* see if two addresses are equal in a scope-conscious manner. */
243 #define SA6_ARE_ADDR_EQUAL(a, b) \
244 (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
245 ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
246 (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
247 #endif
248
249 /*
250 * Unspecified
251 */
252 #define IN6_IS_ADDR_UNSPECIFIED(a) \
253 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
254 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
255 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
256 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
257
258 /*
259 * Loopback
260 */
261 #define IN6_IS_ADDR_LOOPBACK(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]) == 0) && \
265 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
266
267 /*
268 * IPv4 compatible
269 */
270 #define IN6_IS_ADDR_V4COMPAT(a) \
271 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
272 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
273 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
274 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
275 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
276
277 /*
278 * Mapped
279 */
280 #define IN6_IS_ADDR_V4MAPPED(a) \
281 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
282 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
283 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
284
285 /*
286 * KAME Scope Values
287 */
288
289 #ifdef _KERNEL /* XXX nonstandard */
290 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
291 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
292 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
293 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
294 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
295 #else
296 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
297 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
298 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
299 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
300 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
301 #endif
302
303 /*
304 * Unicast Scope
305 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
306 */
307 #define IN6_IS_ADDR_LINKLOCAL(a) \
308 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
309 #define IN6_IS_ADDR_SITELOCAL(a) \
310 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
311
312 /*
313 * Multicast
314 */
315 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
316
317 #ifdef _KERNEL /* XXX nonstandard */
318 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
319 #else
320 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
321 #endif
322
323 /*
324 * Multicast Scope
325 */
326 #ifdef _KERNEL /* refers nonstandard items */
327 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
328 (IN6_IS_ADDR_MULTICAST(a) && \
329 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
330 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
331 (IN6_IS_ADDR_MULTICAST(a) && \
332 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
333 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
334 (IN6_IS_ADDR_MULTICAST(a) && \
335 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
336 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
337 (IN6_IS_ADDR_MULTICAST(a) && \
338 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
339 #define IN6_IS_ADDR_MC_GLOBAL(a) \
340 (IN6_IS_ADDR_MULTICAST(a) && \
341 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
342 #else
343 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
344 (IN6_IS_ADDR_MULTICAST(a) && \
345 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
346 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
347 (IN6_IS_ADDR_MULTICAST(a) && \
348 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
349 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
350 (IN6_IS_ADDR_MULTICAST(a) && \
351 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
352 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
353 (IN6_IS_ADDR_MULTICAST(a) && \
354 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
355 #define IN6_IS_ADDR_MC_GLOBAL(a) \
356 (IN6_IS_ADDR_MULTICAST(a) && \
357 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
358 #endif
359
360 #ifdef _KERNEL /* nonstandard */
361 /*
362 * KAME Scope
363 */
364 #define IN6_IS_SCOPE_LINKLOCAL(a) \
365 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
366 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
367
368 #define IFA6_IS_DEPRECATED(a) \
369 ((a)->ia6_lifetime.ia6t_preferred != 0 && \
370 (a)->ia6_lifetime.ia6t_preferred < time_second)
371 #define IFA6_IS_INVALID(a) \
372 ((a)->ia6_lifetime.ia6t_expire != 0 && \
373 (a)->ia6_lifetime.ia6t_expire < time_second)
374 #endif /* _KERNEL */
375
376 /*
377 * IP6 route structure
378 */
379 #ifndef _XOPEN_SOURCE
380 struct route_in6 {
381 struct rtentry *ro_rt;
382 struct sockaddr_in6 ro_dst;
383 };
384 #endif
385
386 /*
387 * Options for use with [gs]etsockopt at the IPV6 level.
388 * First word of comment is data type; bool is stored in int.
389 */
390 /* no hdrincl */
391 #if 0 /* the followings are relic in IPv4 and hence are disabled */
392 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
393 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
394 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
395 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
396 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
397 #endif
398 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
399 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
400 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
401 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
402 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
403 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
404 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
405 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
406 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
407 /* RFC2292 options */
408 #define IPV6_PKTINFO 19 /* bool; send/recv if, src/dst addr */
409 #define IPV6_HOPLIMIT 20 /* bool; hop limit */
410 #define IPV6_NEXTHOP 21 /* bool; next hop addr */
411 #define IPV6_HOPOPTS 22 /* bool; hop-by-hop option */
412 #define IPV6_DSTOPTS 23 /* bool; destination option */
413 #define IPV6_RTHDR 24 /* bool; routing header */
414 #define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
415
416 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
417 #define IPV6_V6ONLY 27 /* bool; only bind INET6 at wildcard bind */
418 #ifndef _KERNEL
419 #define IPV6_BINDV6ONLY IPV6_V6ONLY
420 #endif
421
422 #if 1 /* IPSEC */
423 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
424 #endif
425 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
426
427 #if 1 /* IPV6FIREWALL */
428 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
429 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
430 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
431 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
432 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
433 #endif
434
435 /* to define items, should talk with KAME guys first, for *BSD compatibility */
436
437 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
438 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
439 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
440
441 /*
442 * Defaults and limits for options
443 */
444 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
445 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
446
447 /*
448 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
449 */
450 struct ipv6_mreq {
451 struct in6_addr ipv6mr_multiaddr;
452 unsigned int ipv6mr_interface;
453 };
454
455 /*
456 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
457 */
458 struct in6_pktinfo {
459 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
460 unsigned int ipi6_ifindex; /* send/recv interface index */
461 };
462
463 /*
464 * Argument for IPV6_PORTRANGE:
465 * - which range to search when port is unspecified at bind() or connect()
466 */
467 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
468 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
469 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
470
471 #ifndef _XOPEN_SOURCE
472 /*
473 * Definitions for inet6 sysctl operations.
474 *
475 * Third level is protocol number.
476 * Fourth level is desired variable within that protocol.
477 */
478 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
479
480 #define CTL_IPV6PROTO_NAMES { \
481 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
482 { 0, 0 }, \
483 { "tcp6", CTLTYPE_NODE }, \
484 { 0, 0 }, \
485 { 0, 0 }, \
486 { 0, 0 }, \
487 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
488 { 0, 0 }, \
489 { 0, 0 }, \
490 { "udp6", CTLTYPE_NODE }, \
491 { 0, 0 }, \
492 { 0, 0 }, \
493 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
494 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
495 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
496 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
497 { 0, 0 }, \
498 { "ip6", CTLTYPE_NODE }, \
499 { 0, 0 }, \
500 { 0, 0 }, \
501 { 0, 0 }, \
502 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
503 { 0, 0 }, \
504 { "ipsec6", CTLTYPE_NODE }, \
505 { 0, 0 }, \
506 { 0, 0 }, \
507 { 0, 0 }, \
508 { 0, 0 }, \
509 { 0, 0 }, \
510 { 0, 0 }, \
511 { "icmp6", CTLTYPE_NODE }, \
512 { 0, 0 }, \
513 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
514 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
515 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
516 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
517 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
518 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
519 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
520 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
521 { 0, 0 }, \
522 { 0, 0 }, \
523 { 0, 0 }, \
524 { "pim6", CTLTYPE_NODE }, \
525 }
526
527 /*
528 * Names for IP sysctl objects
529 */
530 #define IPV6CTL_FORWARDING 1 /* act as router */
531 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
532 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
533 #ifdef notyet
534 #define IPV6CTL_DEFMTU 4 /* default MTU */
535 #endif
536 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
537 #define IPV6CTL_STATS 6 /* stats */
538 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
539 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
540 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
541 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
542 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
543 #define IPV6CTL_ACCEPT_RTADV 12
544 #define IPV6CTL_KEEPFAITH 13
545 #define IPV6CTL_LOG_INTERVAL 14
546 #define IPV6CTL_HDRNESTLIMIT 15
547 #define IPV6CTL_DAD_COUNT 16
548 #define IPV6CTL_AUTO_FLOWLABEL 17
549 #define IPV6CTL_DEFMCASTHLIM 18
550 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
551 #define IPV6CTL_KAME_VERSION 20
552 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
553 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
554 #if 0 /* obsolete */
555 #define IPV6CTL_MAPPED_ADDR 23
556 #endif
557 #define IPV6CTL_V6ONLY 24
558 #define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
559 #define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
560 #define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
561
562 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
563 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
564 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
565 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
566 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
567
568 /* New entries should be added here from current IPV6CTL_MAXID value. */
569 /* to define items, should talk with KAME guys first, for *BSD compatibility */
570 #define IPV6CTL_MAXID 37
571
572 #endif /* !_XOPEN_SOURCE */
573
574 /*
575 * Redefinition of mbuf flags
576 */
577 #define M_AUTHIPHDR M_PROTO2
578 #define M_DECRYPTED M_PROTO3
579 #define M_LOOP M_PROTO4
580 #define M_AUTHIPDGM M_PROTO5
581
582 #ifdef _KERNEL
583 struct cmsghdr;
584
585 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
586 int in6_localaddr __P((struct in6_addr *));
587 int in6_addrscope __P((struct in6_addr *));
588 struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *));
589 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
590 extern void in6_if_up __P((struct ifnet *));
591 struct sockaddr;
592
593 void in6_sin6_2_sin __P((struct sockaddr_in *sin,
594 struct sockaddr_in6 *sin6));
595 void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
596 struct sockaddr_in6 *sin6));
597 void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
598 void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
599
600 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
601 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
602 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
603
604 extern int (*faithprefix_p)(struct in6_addr *);
605 #endif /* _KERNEL */
606
607 __BEGIN_DECLS
608 struct cmsghdr;
609
610 extern int inet6_option_space __P((int));
611 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
612 extern int inet6_option_append __P((struct cmsghdr *, const u_int8_t *,
613 int, int));
614 extern u_int8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
615 extern int inet6_option_next __P((const struct cmsghdr *, u_int8_t **));
616 extern int inet6_option_find __P((const struct cmsghdr *, u_int8_t **, int));
617
618 extern size_t inet6_rthdr_space __P((int, int));
619 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
620 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
621 unsigned int));
622 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
623 #if 0 /* not implemented yet */
624 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
625 #endif
626 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
627 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
628 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
629
630 extern int inet6_opt_init __P((void *, size_t));
631 extern int inet6_opt_append __P((void *, size_t, int, u_int8_t,
632 size_t, u_int8_t, void **));
633 extern int inet6_opt_finish __P((void *, size_t, int));
634 extern int inet6_opt_set_val __P((void *, size_t, void *, int));
635
636 extern int inet6_opt_next __P((void *, size_t, int, u_int8_t *,
637 size_t *, void **));
638 extern int inet6_opt_find __P((void *, size_t, int, u_int8_t,
639 size_t *, void **));
640 extern int inet6_opt_get_val __P((void *, size_t, void *, int));
641 extern size_t inet6_rth_space __P((int, int));
642 extern void *inet6_rth_init __P((void *, int, int, int));
643 extern int inet6_rth_add __P((void *, const struct in6_addr *));
644 extern int inet6_rth_reverse __P((const void *, void *));
645 extern int inet6_rth_segments __P((const void *));
646 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
647 __END_DECLS
648
649 #endif /* !_NETINET6_IN6_H_ */
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