Watt-32 tcp/ip  2.2 dev-rel.10
in6.h
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1 
5 /* $FreeBSD: src/sys/netinet6/in6.h,v 1.22 2002/07/25 20:40:09 ume Exp $ */
6 /* $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $ */
7 
8 /*
9  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
10  * All rights reserved.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  * notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  * notice, this list of conditions and the following disclaimer in the
19  * documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the project nor the names of its contributors
21  * may be used to endorse or promote products derived from this software
22  * without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  */
36 
37 /*
38  * Copyright (c) 1982, 1986, 1990, 1993
39  * The Regents of the University of California. All rights reserved.
40  *
41  * Redistribution and use in source and binary forms, with or without
42  * modification, are permitted provided that the following conditions
43  * are met:
44  * 1. Redistributions of source code must retain the above copyright
45  * notice, this list of conditions and the following disclaimer.
46  * 2. Redistributions in binary form must reproduce the above copyright
47  * notice, this list of conditions and the following disclaimer in the
48  * documentation and/or other materials provided with the distribution.
49  * 3. All advertising materials mentioning features or use of this software
50  * must display the following acknowledgement:
51  * This product includes software developed by the University of
52  * California, Berkeley and its contributors.
53  * 4. Neither the name of the University nor the names of its contributors
54  * may be used to endorse or promote products derived from this software
55  * without specific prior written permission.
56  *
57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
60  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
67  * SUCH DAMAGE.
68  *
69  * @(#)in.h 8.3 (Berkeley) 1/3/94
70  */
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 #ifndef __SYS_MBUF_H
84 #include <sys/mbuf.h>
85 #endif
86 
87 /*
88  * Local port number conventions:
89  *
90  * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
91  * unless a kernel is compiled with IPNOPRIVPORTS defined.
92  *
93  * When a user does a bind(2) or connect(2) with a port number of zero,
94  * a non-conflicting local port address is chosen.
95  *
96  * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
97  * that is settable by sysctl(3); net.inet.ip.anonportmin and
98  * net.inet.ip.anonportmax respectively.
99  *
100  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
101  * default assignment range.
102  *
103  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
104  *
105  * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
106  * and exists only for FreeBSD compatibility purposes.
107  *
108  * The value IP_PORTRANGE_LOW changes the range to the "low" are
109  * that is (by convention) restricted to privileged processes.
110  * This convention is based on "vouchsafe" principles only.
111  * It is only secure if you trust the remote host to restrict these ports.
112  * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
113  */
114 #if __BSD_VISIBLE
115 #define IPV6PORT_RESERVED 1024
116 #define IPV6PORT_ANONMIN 49152
117 #define IPV6PORT_ANONMAX 65535
118 #define IPV6PORT_RESERVEDMIN 600
119 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
120 #endif
121 
122 /*
123  * IPv6 address
124  */
125 struct in6_addr {
126  union {
127  uint8_t __u6_addr8[16];
128  uint16_t __u6_addr16[8];
129  uint32_t __u6_addr32[4];
130  } __u6_addr; /* 128-bit IP6 address */
131 };
132 
133 #define s6_addr __u6_addr.__u6_addr8
134 #ifdef _KERNEL /* XXX nonstandard */
135 #define s6_addr8 __u6_addr.__u6_addr8
136 #define s6_addr16 __u6_addr.__u6_addr16
137 #define s6_addr32 __u6_addr.__u6_addr32
138 #endif
139 
140 #define INET6_ADDRSTRLEN 46
141 
142 /*
143  * XXX missing POSIX.1-2001 macro IPPROTO_IPV6.
144  */
145 
146 /*
147  * Socket address for IPv6
148  */
149 #if __BSD_VISIBLE
150 #define SIN6_LEN
151 #endif
152 
153 struct sockaddr_in6 {
154  uint8_t sin6_len; /* length of this struct */
155  sa_family_t sin6_family; /* AF_INET6 */
156  in_port_t sin6_port; /* Transport layer port # */
157  uint32_t sin6_flowinfo; /* IP6 flow information */
158  struct in6_addr sin6_addr; /* IP6 address */
159  uint32_t sin6_scope_id; /* scope zone index */
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
178 extern const struct sockaddr_in6 sa6_any;
179 
180 extern const struct in6_addr in6mask0;
181 extern const struct in6_addr in6mask32;
182 extern const struct in6_addr in6mask64;
183 extern const struct in6_addr in6mask96;
184 extern const struct in6_addr in6mask128;
185 #endif /* _KERNEL */
186 
187 /*
188  * Macros started with IPV6_ADDR is KAME local
189  */
190 #ifdef _KERNEL /* XXX nonstandard */
191 #if _BYTE_ORDER == _BIG_ENDIAN
192 #define IPV6_ADDR_INT32_ONE 1
193 #define IPV6_ADDR_INT32_TWO 2
194 #define IPV6_ADDR_INT32_MNL 0xff010000
195 #define IPV6_ADDR_INT32_MLL 0xff020000
196 #define IPV6_ADDR_INT32_SMP 0x0000ffff
197 #define IPV6_ADDR_INT16_ULL 0xfe80
198 #define IPV6_ADDR_INT16_USL 0xfec0
199 #define IPV6_ADDR_INT16_MLL 0xff02
200 #elif _BYTE_ORDER == _LITTLE_ENDIAN
201 #define IPV6_ADDR_INT32_ONE 0x01000000
202 #define IPV6_ADDR_INT32_TWO 0x02000000
203 #define IPV6_ADDR_INT32_MNL 0x000001ff
204 #define IPV6_ADDR_INT32_MLL 0x000002ff
205 #define IPV6_ADDR_INT32_SMP 0xffff0000
206 #define IPV6_ADDR_INT16_ULL 0x80fe
207 #define IPV6_ADDR_INT16_USL 0xc0fe
208 #define IPV6_ADDR_INT16_MLL 0x02ff
209 #endif
210 #endif
211 
212 /*
213  * Definition of some useful macros to handle IP6 addresses
214  */
215 #if __BSD_VISIBLE
216 #define IN6ADDR_ANY_INIT \
217  {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
218  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
219 #define IN6ADDR_LOOPBACK_INIT \
220  {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
221  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
222 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
223  {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
224  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
225 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
226  {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
227  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
228 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
229  {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
230  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
231 #endif
232 
233 extern const struct in6_addr in6addr_any;
234 extern const struct in6_addr in6addr_loopback;
235 #if __BSD_VISIBLE
236 extern const struct in6_addr in6addr_nodelocal_allnodes;
237 extern const struct in6_addr in6addr_linklocal_allnodes;
238 extern const struct in6_addr in6addr_linklocal_allrouters;
239 #endif
240 
241 /*
242  * Equality
243  * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
244  * does not supply memcmp(). For userland memcmp() is preferred as it is
245  * in ANSI standard.
246  */
247 #ifdef _KERNEL
248 #define IN6_ARE_ADDR_EQUAL(a, b) \
249  (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
250 #else
251 #if __BSD_VISIBLE
252 #define IN6_ARE_ADDR_EQUAL(a, b) \
253  (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
254 #endif
255 #endif
256 
257 #ifdef _KERNEL /* non standard */
258 /* see if two addresses are equal in a scope-conscious manner. */
259 #define SA6_ARE_ADDR_EQUAL(a, b) \
260  (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
261  ((a)->sin6_scope_id == (b)->sin6_scope_id)) && \
262  (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
263 #endif
264 
265 /*
266  * Unspecified
267  */
268 #define IN6_IS_ADDR_UNSPECIFIED(a) \
269  ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
270  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
271  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
272  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
273 
274 /*
275  * Loopback
276  */
277 #define IN6_IS_ADDR_LOOPBACK(a) \
278  ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
279  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
280  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
281  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
282 
283 /*
284  * IPv4 compatible
285  */
286 #define IN6_IS_ADDR_V4COMPAT(a) \
287  ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
288  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
289  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
290  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
291  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
292 
293 /*
294  * Mapped
295  */
296 #define IN6_IS_ADDR_V4MAPPED(a) \
297  ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
298  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
299  (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
300 
301 /*
302  * KAME Scope Values
303  */
304 
305 #ifdef _KERNEL /* XXX nonstandard */
306 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
307 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
308 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
309 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
310 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
311 #else
312 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
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
317 #endif
318 
319 /*
320  * Unicast Scope
321  * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
322  */
323 #define IN6_IS_ADDR_LINKLOCAL(a) \
324  (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
325 #define IN6_IS_ADDR_SITELOCAL(a) \
326  (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
327 
328 /*
329  * Multicast
330  */
331 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
332 
333 #ifdef _KERNEL /* XXX nonstandard */
334 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
335 #else
336 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
337 #endif
338 
339 /*
340  * Multicast Scope
341  */
342 #ifdef _KERNEL /* refers nonstandard items */
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 #else
359 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
360  (IN6_IS_ADDR_MULTICAST(a) && \
361  (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
362 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
363  (IN6_IS_ADDR_MULTICAST(a) && \
364  (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
365 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
366  (IN6_IS_ADDR_MULTICAST(a) && \
367  (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
368 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
369  (IN6_IS_ADDR_MULTICAST(a) && \
370  (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
371 #define IN6_IS_ADDR_MC_GLOBAL(a) \
372  (IN6_IS_ADDR_MULTICAST(a) && \
373  (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
374 #endif
375 
376 #ifdef _KERNEL /* nonstandard */
377 /*
378  * KAME Scope
379  */
380 #define IN6_IS_SCOPE_LINKLOCAL(a) \
381  ((IN6_IS_ADDR_LINKLOCAL(a)) || \
382  (IN6_IS_ADDR_MC_LINKLOCAL(a)))
383 
384 #define IFA6_IS_DEPRECATED(a) \
385  ((a)->ia6_lifetime.ia6t_preferred != 0 && \
386  (a)->ia6_lifetime.ia6t_preferred < time_second)
387 #define IFA6_IS_INVALID(a) \
388  ((a)->ia6_lifetime.ia6t_expire != 0 && \
389  (a)->ia6_lifetime.ia6t_expire < time_second)
390 #endif /* _KERNEL */
391 
392 /*
393  * IP6 route structure
394  */
395 struct route_in6 {
396  struct rtentry *ro_rt;
397  struct sockaddr_in6 ro_dst;
398 };
399 
400 /*
401  * Options for use with [gs]etsockopt at the IPV6 level.
402  * First word of comment is data type; bool is stored in int.
403  */
404 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
405 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
406 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
407 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
408 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
409 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
410 #define IPV6_V6ONLY 27 /* bool; only bind INET6 at wildcard bind */
411 
412 #if __BSD_VISIBLE
413 /* no hdrincl */
414 #if 0 /* the followings are relic in IPv4 and hence are disabled */
415 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
416 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
417 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
418 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
419 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
420 #endif
421 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
422 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
423 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
424 /* RFC2292 options */
425 #define IPV6_PKTINFO 19 /* bool; send/recv if, src/dst addr */
426 #define IPV6_HOPLIMIT 20 /* bool; hop limit */
427 #define IPV6_NEXTHOP 21 /* bool; next hop addr */
428 #define IPV6_HOPOPTS 22 /* bool; hop-by-hop option */
429 #define IPV6_DSTOPTS 23 /* bool; destination option */
430 #define IPV6_RTHDR 24 /* bool; routing header */
431 #define IPV6_PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
432 
433 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
434 #ifndef _KERNEL
435 #define IPV6_BINDV6ONLY IPV6_V6ONLY
436 #endif
437 
438 #if 1 /* IPSEC */
439 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
440 #endif
441 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
442 
443 #if 1 /* IPV6FIREWALL */
444 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
445 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
446 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
447 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
448 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
449 #endif
450 
451 /* to define items, should talk with KAME guys first, for *BSD compatibility */
452 
453 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
454 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
455 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
456 
457 /*
458  * Defaults and limits for options
459  */
460 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
461 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
462 
463 /*
464  * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
465  */
466 struct ipv6_mreq {
467  struct in6_addr ipv6mr_multiaddr;
468  unsigned int ipv6mr_interface;
469 };
470 
471 /*
472  * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
473  */
474 struct in6_pktinfo {
475  struct in6_addr ipi6_addr; /* src/dst IPv6 address */
476  unsigned int ipi6_ifindex; /* send/recv interface index */
477 };
478 
479 /*
480  * Argument for IPV6_PORTRANGE:
481  * - which range to search when port is unspecified at bind() or connect()
482  */
483 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
484 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
485 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
486 
487 /*
488  * Definitions for inet6 sysctl operations.
489  *
490  * Third level is protocol number.
491  * Fourth level is desired variable within that protocol.
492  */
493 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
494 
495 #define CTL_IPV6PROTO_NAMES { \
496  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
497  { 0, 0 }, \
498  { "tcp6", 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  { 0, 0 }, \
505  { "udp6", CTLTYPE_NODE }, \
506  { 0, 0 }, \
507  { 0, 0 }, \
508  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
509  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
510  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
511  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
512  { 0, 0 }, \
513  { "ip6", CTLTYPE_NODE }, \
514  { 0, 0 }, \
515  { 0, 0 }, \
516  { 0, 0 }, \
517  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
518  { 0, 0 }, \
519  { "ipsec6", CTLTYPE_NODE }, \
520  { 0, 0 }, \
521  { 0, 0 }, \
522  { 0, 0 }, \
523  { 0, 0 }, \
524  { 0, 0 }, \
525  { 0, 0 }, \
526  { "icmp6", CTLTYPE_NODE }, \
527  { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
531  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
532  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
533  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
534  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
535  { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
536  { 0, 0 }, \
537  { 0, 0 }, \
538  { 0, 0 }, \
539  { "pim6", CTLTYPE_NODE }, \
540 }
541 
542 /*
543  * Names for IP sysctl objects
544  */
545 #define IPV6CTL_FORWARDING 1 /* act as router */
546 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
547 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
548 #ifdef notyet
549 #define IPV6CTL_DEFMTU 4 /* default MTU */
550 #endif
551 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
552 #define IPV6CTL_STATS 6 /* stats */
553 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
554 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
555 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
556 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
557 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
558 #define IPV6CTL_ACCEPT_RTADV 12
559 #define IPV6CTL_KEEPFAITH 13
560 #define IPV6CTL_LOG_INTERVAL 14
561 #define IPV6CTL_HDRNESTLIMIT 15
562 #define IPV6CTL_DAD_COUNT 16
563 #define IPV6CTL_AUTO_FLOWLABEL 17
564 #define IPV6CTL_DEFMCASTHLIM 18
565 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
566 #define IPV6CTL_KAME_VERSION 20
567 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
568 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
569 #if 0 /* obsolete */
570 #define IPV6CTL_MAPPED_ADDR 23
571 #endif
572 #define IPV6CTL_V6ONLY 24
573 #define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
574 #define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
575 #define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
576 
577 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
578 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
579 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
580 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
581 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
582 
583 /* New entries should be added here from current IPV6CTL_MAXID value. */
584 /* to define items, should talk with KAME guys first, for *BSD compatibility */
585 #define IPV6CTL_MAXID 37
586 
587 /*
588  * Redefinition of mbuf flags
589  */
590 #define M_AUTHIPHDR M_PROTO2
591 #define M_DECRYPTED M_PROTO3
592 #define M_LOOP M_PROTO4
593 #define M_AUTHIPDGM M_PROTO5
594 
595 #ifdef _KERNEL
596 struct cmsghdr;
597 
598 int in6_cksum __P((struct mbuf *, u_int8_t, u_int32_t, u_int32_t));
599 int in6_localaddr __P((struct in6_addr *));
600 int in6_addrscope __P((struct in6_addr *));
601 struct in6_ifaddr *in6_ifawithscope __P((struct ifnet *, struct in6_addr *));
602 struct in6_ifaddr *in6_ifawithifp __P((struct ifnet *, struct in6_addr *));
603 extern void in6_if_up __P((struct ifnet *));
604 struct sockaddr;
605 extern u_char ip6_protox[];
606 
607 void in6_sin6_2_sin __P((struct sockaddr_in *sin,
608  struct sockaddr_in6 *sin6));
609 void in6_sin_2_v4mapsin6 __P((struct sockaddr_in *sin,
610  struct sockaddr_in6 *sin6));
611 void in6_sin6_2_sin_in_sock __P((struct sockaddr *nam));
612 void in6_sin_2_v4mapsin6_in_sock __P((struct sockaddr **nam));
613 
614 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
615 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
616 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
617 
618 extern int (*faithprefix_p)(struct in6_addr *);
619 #endif /* _KERNEL */
620 
621 #ifdef _BSD_SIZE_T_
622 typedef _BSD_SIZE_T_ size_t;
623 #undef _BSD_SIZE_T_
624 #endif
625 
626 __BEGIN_DECLS
627 struct cmsghdr;
628 
629 extern int inet6_option_space __P((int));
630 extern int inet6_option_init __P((void *, struct cmsghdr **, int));
631 extern int inet6_option_append __P((struct cmsghdr *, const uint8_t *,
632  int, int));
633 extern uint8_t *inet6_option_alloc __P((struct cmsghdr *, int, int, int));
634 extern int inet6_option_next __P((const struct cmsghdr *, uint8_t **));
635 extern int inet6_option_find __P((const struct cmsghdr *, uint8_t **, int));
636 
637 extern size_t inet6_rthdr_space __P((int, int));
638 extern struct cmsghdr *inet6_rthdr_init __P((void *, int));
639 extern int inet6_rthdr_add __P((struct cmsghdr *, const struct in6_addr *,
640  unsigned int));
641 extern int inet6_rthdr_lasthop __P((struct cmsghdr *, unsigned int));
642 #if 0 /* not implemented yet */
643 extern int inet6_rthdr_reverse __P((const struct cmsghdr *, struct cmsghdr *));
644 #endif
645 extern int inet6_rthdr_segments __P((const struct cmsghdr *));
646 extern struct in6_addr *inet6_rthdr_getaddr __P((struct cmsghdr *, int));
647 extern int inet6_rthdr_getflags __P((const struct cmsghdr *, int));
648 
649 extern int inet6_opt_init __P((void *, size_t));
650 extern int inet6_opt_append __P((void *, size_t, int, uint8_t,
651  size_t, uint8_t, void **));
652 extern int inet6_opt_finish __P((void *, size_t, int));
653 extern int inet6_opt_set_val __P((void *, size_t, void *, int));
654 
655 extern int inet6_opt_next __P((void *, size_t, int, uint8_t *,
656  size_t *, void **));
657 extern int inet6_opt_find __P((void *, size_t, int, uint8_t,
658  size_t *, void **));
659 extern int inet6_opt_get_val __P((void *, size_t, void *, int));
660 extern size_t inet6_rth_space __P((int, int));
661 extern void *inet6_rth_init __P((void *, int, int, int));
662 extern int inet6_rth_add __P((void *, const struct in6_addr *));
663 extern int inet6_rth_reverse __P((const void *, void *));
664 extern int inet6_rth_segments __P((const void *));
665 extern struct in6_addr *inet6_rth_getaddr __P((const void *, int));
666 __END_DECLS
667 
668 #endif /* __BSD_VISIBLE */
669 
670 #endif /* !_NETINET6_IN6_H_ */
Definition: in.h:153
Definition: if.h:130
Definition: mbuf.h:6
Definition: in.h:255
Definition: in6.h:395
Definition: route.h:98