FreeBSD/Linux Kernel Cross Reference
sys/netinet6/in6.h
1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $
32 */
33
34 /*-
35 * Copyright (c) 1982, 1986, 1990, 1993
36 * The Regents of the University of California. All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 * SUCH DAMAGE.
61 *
62 * @(#)in.h 8.3 (Berkeley) 1/3/94
63 * $FreeBSD: releng/12.0/sys/netinet6/in6.h 337783 2018-08-14 17:27:41Z jtl $
64 */
65
66 #ifndef __KAME_NETINET_IN_H_INCLUDED_
67 #error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
68 #endif
69
70 #ifndef _NETINET6_IN6_H_
71 #define _NETINET6_IN6_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 "FreeBSD"
80
81 /*
82 * IPv6 port allocation rules should mirror the IPv4 rules and are controlled
83 * by the net.inet.ip.portrange sysctl tree. The following defines exist
84 * for compatibility with userland applications that need them.
85 */
86 #if __BSD_VISIBLE
87 #define IPV6PORT_RESERVED 1024
88 #define IPV6PORT_ANONMIN 49152
89 #define IPV6PORT_ANONMAX 65535
90 #define IPV6PORT_RESERVEDMIN 600
91 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
92 #endif
93
94 /*
95 * IPv6 address
96 */
97 struct in6_addr {
98 union {
99 uint8_t __u6_addr8[16];
100 uint16_t __u6_addr16[8];
101 uint32_t __u6_addr32[4];
102 } __u6_addr; /* 128-bit IP6 address */
103 };
104
105 #define s6_addr __u6_addr.__u6_addr8
106 #ifdef _KERNEL /* XXX nonstandard */
107 #define s6_addr8 __u6_addr.__u6_addr8
108 #define s6_addr16 __u6_addr.__u6_addr16
109 #define s6_addr32 __u6_addr.__u6_addr32
110 #endif
111
112 #define INET6_ADDRSTRLEN 46
113
114 /*
115 * XXX missing POSIX.1-2001 macro IPPROTO_IPV6.
116 */
117
118 /*
119 * Socket address for IPv6
120 */
121 #if __BSD_VISIBLE
122 #define SIN6_LEN
123 #endif
124
125 struct sockaddr_in6 {
126 uint8_t sin6_len; /* length of this struct */
127 sa_family_t sin6_family; /* AF_INET6 */
128 in_port_t sin6_port; /* Transport layer port # */
129 uint32_t sin6_flowinfo; /* IP6 flow information */
130 struct in6_addr sin6_addr; /* IP6 address */
131 uint32_t sin6_scope_id; /* scope zone index */
132 };
133
134 /*
135 * Local definition for masks
136 */
137 #ifdef _KERNEL /* XXX nonstandard */
138 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
139 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
140 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
141 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
142 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
143 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
144 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
145 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
146 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
147 #endif
148
149 #ifdef _KERNEL
150 extern const struct sockaddr_in6 sa6_any;
151
152 extern const struct in6_addr in6mask0;
153 extern const struct in6_addr in6mask32;
154 extern const struct in6_addr in6mask64;
155 extern const struct in6_addr in6mask96;
156 extern const struct in6_addr in6mask128;
157 #endif /* _KERNEL */
158
159 /*
160 * Macros started with IPV6_ADDR is KAME local
161 */
162 #ifdef _KERNEL /* XXX nonstandard */
163 #if _BYTE_ORDER == _BIG_ENDIAN
164 #define IPV6_ADDR_INT32_ONE 1
165 #define IPV6_ADDR_INT32_TWO 2
166 #define IPV6_ADDR_INT32_MNL 0xff010000
167 #define IPV6_ADDR_INT32_MLL 0xff020000
168 #define IPV6_ADDR_INT32_SMP 0x0000ffff
169 #define IPV6_ADDR_INT16_ULL 0xfe80
170 #define IPV6_ADDR_INT16_USL 0xfec0
171 #define IPV6_ADDR_INT16_MLL 0xff02
172 #elif _BYTE_ORDER == _LITTLE_ENDIAN
173 #define IPV6_ADDR_INT32_ONE 0x01000000
174 #define IPV6_ADDR_INT32_TWO 0x02000000
175 #define IPV6_ADDR_INT32_MNL 0x000001ff
176 #define IPV6_ADDR_INT32_MLL 0x000002ff
177 #define IPV6_ADDR_INT32_SMP 0xffff0000
178 #define IPV6_ADDR_INT16_ULL 0x80fe
179 #define IPV6_ADDR_INT16_USL 0xc0fe
180 #define IPV6_ADDR_INT16_MLL 0x02ff
181 #endif
182 #endif
183
184 /*
185 * Definition of some useful macros to handle IP6 addresses
186 */
187 #if __BSD_VISIBLE
188 #define IN6ADDR_ANY_INIT \
189 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
190 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
191 #define IN6ADDR_LOOPBACK_INIT \
192 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
193 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
194 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
195 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
196 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
197 #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
198 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
199 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
200 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
201 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
202 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
203 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
204 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
206 #define IN6ADDR_LINKLOCAL_ALLV2ROUTERS_INIT \
207 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
208 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16 }}}
209 #endif
210
211 extern const struct in6_addr in6addr_any;
212 extern const struct in6_addr in6addr_loopback;
213 #if __BSD_VISIBLE
214 extern const struct in6_addr in6addr_nodelocal_allnodes;
215 extern const struct in6_addr in6addr_linklocal_allnodes;
216 extern const struct in6_addr in6addr_linklocal_allrouters;
217 extern const struct in6_addr in6addr_linklocal_allv2routers;
218 #endif
219
220 /*
221 * Equality
222 * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
223 * does not supply memcmp(). For userland memcmp() is preferred as it is
224 * in ANSI standard.
225 */
226 #ifdef _KERNEL
227 #define IN6_ARE_ADDR_EQUAL(a, b) \
228 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
229 #else
230 #if __BSD_VISIBLE
231 #define IN6_ARE_ADDR_EQUAL(a, b) \
232 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
233 #endif
234 #endif
235
236 /*
237 * Unspecified
238 */
239 #define IN6_IS_ADDR_UNSPECIFIED(a) \
240 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
241 (a)->__u6_addr.__u6_addr32[1] == 0 && \
242 (a)->__u6_addr.__u6_addr32[2] == 0 && \
243 (a)->__u6_addr.__u6_addr32[3] == 0)
244
245 /*
246 * Loopback
247 */
248 #define IN6_IS_ADDR_LOOPBACK(a) \
249 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
250 (a)->__u6_addr.__u6_addr32[1] == 0 && \
251 (a)->__u6_addr.__u6_addr32[2] == 0 && \
252 (a)->__u6_addr.__u6_addr32[3] == ntohl(1))
253
254 /*
255 * IPv4 compatible
256 */
257 #define IN6_IS_ADDR_V4COMPAT(a) \
258 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
259 (a)->__u6_addr.__u6_addr32[1] == 0 && \
260 (a)->__u6_addr.__u6_addr32[2] == 0 && \
261 (a)->__u6_addr.__u6_addr32[3] != 0 && \
262 (a)->__u6_addr.__u6_addr32[3] != ntohl(1))
263
264 /*
265 * Mapped
266 */
267 #define IN6_IS_ADDR_V4MAPPED(a) \
268 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
269 (a)->__u6_addr.__u6_addr32[1] == 0 && \
270 (a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff))
271
272 /*
273 * KAME Scope Values
274 */
275
276 #ifdef _KERNEL /* XXX nonstandard */
277 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
278 #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
279 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
280 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
281 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
282 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
283 #else
284 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
285 #define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
286 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
287 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
288 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
289 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
290 #endif
291
292 /*
293 * Unicast Scope
294 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
295 */
296 #define IN6_IS_ADDR_LINKLOCAL(a) \
297 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
298 #define IN6_IS_ADDR_SITELOCAL(a) \
299 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
300
301 /*
302 * Multicast
303 */
304 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
305
306 #ifdef _KERNEL /* XXX nonstandard */
307 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
308 #else
309 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
310 #endif
311
312 /*
313 * Multicast Scope
314 */
315 #ifdef _KERNEL /* refers nonstandard items */
316 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
317 (IN6_IS_ADDR_MULTICAST(a) && \
318 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
319 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
320 (IN6_IS_ADDR_MULTICAST(a) && \
321 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
322 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
323 (IN6_IS_ADDR_MULTICAST(a) && \
324 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
325 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
326 (IN6_IS_ADDR_MULTICAST(a) && \
327 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
328 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
329 (IN6_IS_ADDR_MULTICAST(a) && \
330 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
331 #define IN6_IS_ADDR_MC_GLOBAL(a) \
332 (IN6_IS_ADDR_MULTICAST(a) && \
333 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
334 #else
335 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
336 (IN6_IS_ADDR_MULTICAST(a) && \
337 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
338 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
339 (IN6_IS_ADDR_MULTICAST(a) && \
340 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
341 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
342 (IN6_IS_ADDR_MULTICAST(a) && \
343 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
344 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
345 (IN6_IS_ADDR_MULTICAST(a) && \
346 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
347 #define IN6_IS_ADDR_MC_GLOBAL(a) \
348 (IN6_IS_ADDR_MULTICAST(a) && \
349 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
350 #endif
351
352 #ifdef _KERNEL /* nonstandard */
353 /*
354 * KAME Scope
355 */
356 #define IN6_IS_SCOPE_LINKLOCAL(a) \
357 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
358 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
359 #define IN6_IS_SCOPE_EMBED(a) \
360 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
361 (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
362 (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
363
364 #define IFA6_IS_DEPRECATED(a) \
365 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
366 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) > \
367 (a)->ia6_lifetime.ia6t_pltime)
368 #define IFA6_IS_INVALID(a) \
369 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
370 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) > \
371 (a)->ia6_lifetime.ia6t_vltime)
372 #endif /* _KERNEL */
373
374 /*
375 * IP6 route structure
376 */
377 #if __BSD_VISIBLE
378 struct route_in6 {
379 struct rtentry *ro_rt;
380 struct llentry *ro_lle;
381 /*
382 * ro_prepend and ro_plen are only used for bpf to pass in a
383 * preformed header. They are not cacheable.
384 */
385 char *ro_prepend;
386 uint16_t ro_plen;
387 uint16_t ro_flags;
388 uint16_t ro_mtu; /* saved ro_rt mtu */
389 uint16_t spare;
390 struct sockaddr_in6 ro_dst;
391 };
392 #endif
393
394 #ifdef _KERNEL
395 #define MTAG_ABI_IPV6 1444287380 /* IPv6 ABI */
396 #define IPV6_TAG_DIRECT 0 /* direct-dispatch IPv6 */
397 #endif /* _KERNEL */
398
399 /*
400 * Options for use with [gs]etsockopt at the IPV6 level.
401 * First word of comment is data type; bool is stored in int.
402 */
403 /* no hdrincl */
404 #if 0 /* the followings are relic in IPv4 and hence are disabled */
405 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
406 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
407 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
408 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
409 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
410 #endif
411 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
412 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
413 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
414 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
415 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
416 #define IPV6_JOIN_GROUP 12 /* ipv6_mreq; join a group membership */
417 #define IPV6_LEAVE_GROUP 13 /* ipv6_mreq; leave a group membership */
418 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
419 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
420 /* RFC2292 options */
421 #ifdef _KERNEL
422 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
423 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
424 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
425 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
426 #define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
427 #define IPV6_2292RTHDR 24 /* bool; routing header */
428 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
429 #endif
430
431 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
432 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
433 #ifndef _KERNEL
434 #define IPV6_BINDV6ONLY IPV6_V6ONLY
435 #endif
436
437 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
438 /* 29; unused; was IPV6_FAITH */
439 #if 1 /* IPV6FIREWALL */
440 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
441 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
442 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
443 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
444 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
445 #endif
446
447 /* new socket options introduced in RFC3542 */
448 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
449
450 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
451 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
452 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */
453 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
454 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
455 #ifdef _KERNEL
456 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
457 #endif
458
459 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
460 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
461
462 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
463 4 bytes int; MTU notification (cmsg) */
464 #if 0 /*obsoleted during 2292bis -> 3542*/
465 #define IPV6_REACHCONF 45 /* no data; ND reachability confirm
466 (cmsg only/not in of RFC3542) */
467 #endif
468
469 /* more new socket options introduced in RFC3542 */
470 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
471 #define IPV6_HOPLIMIT 47 /* int; send hop limit */
472 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
473 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
474 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
475 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
476 #if 0
477 #define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options */
478 /* obsoleted by RFC3542 */
479 #endif
480
481 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
482
483 #define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
484
485 #define IPV6_TCLASS 61 /* int; send traffic class value */
486 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
487
488 #define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
489 * the source address.
490 */
491
492 #define IPV6_BINDANY 64 /* bool: allow bind to any address */
493
494 #define IPV6_BINDMULTI 65 /* bool; allow multibind to same addr/port */
495 #define IPV6_RSS_LISTEN_BUCKET 66 /* int; set RSS listen bucket */
496 #define IPV6_FLOWID 67 /* int; flowid of given socket */
497 #define IPV6_FLOWTYPE 68 /* int; flowtype of given socket */
498 #define IPV6_RSSBUCKETID 69 /* int; RSS bucket ID of given socket */
499 #define IPV6_RECVFLOWID 70 /* bool; receive IP6 flowid/flowtype w/ datagram */
500 #define IPV6_RECVRSSBUCKETID 71 /* bool; receive IP6 RSS bucket id w/ datagram */
501
502 #define IPV6_ORIGDSTADDR 72 /* bool: allow getting dstaddr /port info */
503 #define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR
504
505 /*
506 * The following option is private; do not use it from user applications.
507 * It is deliberately defined to the same value as IP_MSFILTER.
508 */
509 #define IPV6_MSFILTER 74 /* struct __msfilterreq;
510 * set/get multicast source filter list.
511 */
512
513 /* to define items, should talk with KAME guys first, for *BSD compatibility */
514
515 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
516 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
517 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
518
519 /*
520 * Defaults and limits for options
521 */
522 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
523 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
524
525 /*
526 * The im6o_membership vector for each socket is now dynamically allocated at
527 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized
528 * according to a power-of-two increment.
529 */
530 #define IPV6_MIN_MEMBERSHIPS 31
531 #define IPV6_MAX_MEMBERSHIPS 4095
532
533 /*
534 * Default resource limits for IPv6 multicast source filtering.
535 * These may be modified by sysctl.
536 */
537 #define IPV6_MAX_GROUP_SRC_FILTER 512 /* sources per group */
538 #define IPV6_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */
539
540 /*
541 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
542 */
543 struct ipv6_mreq {
544 struct in6_addr ipv6mr_multiaddr;
545 unsigned int ipv6mr_interface;
546 };
547
548 /*
549 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
550 */
551 struct in6_pktinfo {
552 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
553 unsigned int ipi6_ifindex; /* send/recv interface index */
554 };
555
556 /*
557 * Control structure for IPV6_RECVPATHMTU socket option.
558 */
559 struct ip6_mtuinfo {
560 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
561 uint32_t ip6m_mtu;
562 };
563
564 /*
565 * Argument for IPV6_PORTRANGE:
566 * - which range to search when port is unspecified at bind() or connect()
567 */
568 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
569 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
570 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
571
572 #if __BSD_VISIBLE
573 /*
574 * Definitions for inet6 sysctl operations.
575 *
576 * Third level is protocol number.
577 * Fourth level is desired variable within that protocol.
578 */
579 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
580
581 /*
582 * Names for IP sysctl objects
583 */
584 #define IPV6CTL_FORWARDING 1 /* act as router */
585 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
586 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
587 #ifdef notyet
588 #define IPV6CTL_DEFMTU 4 /* default MTU */
589 #endif
590 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
591 #define IPV6CTL_STATS 6 /* stats */
592 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
593 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
594 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
595 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
596 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
597 #define IPV6CTL_ACCEPT_RTADV 12
598 /* 13; unused; was: IPV6CTL_KEEPFAITH */
599 #define IPV6CTL_LOG_INTERVAL 14
600 #define IPV6CTL_HDRNESTLIMIT 15
601 #define IPV6CTL_DAD_COUNT 16
602 #define IPV6CTL_AUTO_FLOWLABEL 17
603 #define IPV6CTL_DEFMCASTHLIM 18
604 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
605 #define IPV6CTL_KAME_VERSION 20
606 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
607 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
608 #if 0 /* obsolete */
609 #define IPV6CTL_MAPPED_ADDR 23
610 #endif
611 #define IPV6CTL_V6ONLY 24
612 /* IPV6CTL_RTEXPIRE 25 deprecated */
613 /* IPV6CTL_RTMINEXPIRE 26 deprecated */
614 /* IPV6CTL_RTMAXCACHE 27 deprecated */
615
616 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
617 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
618 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
619 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
620 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
621 #define IPV6CTL_PREFER_TEMPADDR 37 /* prefer temporary addr as src */
622 #define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
623 #define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */
624
625 #define IPV6CTL_MAXFRAGS 41 /* max fragments */
626 #if 0
627 #define IPV6CTL_IFQ 42 /* ip6intrq node */
628 #define IPV6CTL_ISATAPRTR 43 /* isatap router */
629 #endif
630 #define IPV6CTL_MCAST_PMTU 44 /* enable pMTU discovery for multicast? */
631
632 /* New entries should be added here from current IPV6CTL_MAXID value. */
633 /* to define items, should talk with KAME guys first, for *BSD compatibility */
634 #define IPV6CTL_STEALTH 45
635
636 #define ICMPV6CTL_ND6_ONLINKNSRFC4861 47
637 #define IPV6CTL_NO_RADR 48 /* No defroute from RA */
638 #define IPV6CTL_NORBIT_RAIF 49 /* Disable R-bit in NA on RA
639 * receiving IF. */
640 #define IPV6CTL_RFC6204W3 50 /* Accept defroute even when forwarding
641 enabled */
642 #define IPV6CTL_INTRQMAXLEN 51 /* max length of IPv6 netisr queue */
643 #define IPV6CTL_INTRDQMAXLEN 52 /* max length of direct IPv6 netisr
644 * queue */
645 #define IPV6CTL_MAXFRAGSPERPACKET 53 /* Max fragments per packet */
646 #define IPV6CTL_MAXFRAGBUCKETSIZE 54 /* Max reassembly queues per bucket */
647 #define IPV6CTL_MAXID 55
648 #endif /* __BSD_VISIBLE */
649
650 /*
651 * Since both netinet/ and netinet6/ call into netipsec/ and netpfil/,
652 * the protocol specific mbuf flags are shared between them.
653 */
654 #define M_FASTFWD_OURS M_PROTO1 /* changed dst to local */
655 #define M_IP6_NEXTHOP M_PROTO2 /* explicit ip nexthop */
656 #define M_IP_NEXTHOP M_PROTO2 /* explicit ip nexthop */
657 #define M_SKIP_FIREWALL M_PROTO3 /* skip firewall processing */
658 #define M_AUTHIPHDR M_PROTO4
659 #define M_DECRYPTED M_PROTO5
660 #define M_LOOP M_PROTO6
661 #define M_AUTHIPDGM M_PROTO7
662 #define M_RTALERT_MLD M_PROTO8
663 #define M_FRAGMENTED M_PROTO9 /* contained fragment header */
664
665 #ifdef _KERNEL
666 struct cmsghdr;
667 struct ip6_hdr;
668
669 int in6_cksum_pseudo(struct ip6_hdr *, uint32_t, uint8_t, uint16_t);
670 int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t);
671 int in6_cksum_partial(struct mbuf *, u_int8_t, u_int32_t, u_int32_t,
672 u_int32_t);
673 int in6_localaddr(struct in6_addr *);
674 int in6_localip(struct in6_addr *);
675 int in6_ifhasaddr(struct ifnet *, struct in6_addr *);
676 int in6_addrscope(const struct in6_addr *);
677 char *ip6_sprintf(char *, const struct in6_addr *);
678 struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
679 extern void in6_if_up(struct ifnet *);
680 struct sockaddr;
681 extern u_char ip6_protox[];
682
683 void in6_sin6_2_sin(struct sockaddr_in *sin,
684 struct sockaddr_in6 *sin6);
685 void in6_sin_2_v4mapsin6(struct sockaddr_in *sin,
686 struct sockaddr_in6 *sin6);
687 void in6_sin6_2_sin_in_sock(struct sockaddr *nam);
688 void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam);
689 extern void addrsel_policy_init(void);
690
691 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
692 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
693 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
694
695 #endif /* _KERNEL */
696
697 #ifndef _SIZE_T_DECLARED
698 typedef __size_t size_t;
699 #define _SIZE_T_DECLARED
700 #endif
701
702 #ifndef _SOCKLEN_T_DECLARED
703 typedef __socklen_t socklen_t;
704 #define _SOCKLEN_T_DECLARED
705 #endif
706
707 #if __BSD_VISIBLE
708
709 __BEGIN_DECLS
710 struct cmsghdr;
711
712 extern int inet6_option_space(int);
713 extern int inet6_option_init(void *, struct cmsghdr **, int);
714 extern int inet6_option_append(struct cmsghdr *, const uint8_t *,
715 int, int);
716 extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
717 extern int inet6_option_next(const struct cmsghdr *, uint8_t **);
718 extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int);
719
720 extern size_t inet6_rthdr_space(int, int);
721 extern struct cmsghdr *inet6_rthdr_init(void *, int);
722 extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
723 unsigned int);
724 extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
725 #if 0 /* not implemented yet */
726 extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
727 #endif
728 extern int inet6_rthdr_segments(const struct cmsghdr *);
729 extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
730 extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
731
732 extern int inet6_opt_init(void *, socklen_t);
733 extern int inet6_opt_append(void *, socklen_t, int, uint8_t, socklen_t,
734 uint8_t, void **);
735 extern int inet6_opt_finish(void *, socklen_t, int);
736 extern int inet6_opt_set_val(void *, int, void *, socklen_t);
737
738 extern int inet6_opt_next(void *, socklen_t, int, uint8_t *, socklen_t *,
739 void **);
740 extern int inet6_opt_find(void *, socklen_t, int, uint8_t, socklen_t *,
741 void **);
742 extern int inet6_opt_get_val(void *, int, void *, socklen_t);
743 extern socklen_t inet6_rth_space(int, int);
744 extern void *inet6_rth_init(void *, socklen_t, int, int);
745 extern int inet6_rth_add(void *, const struct in6_addr *);
746 extern int inet6_rth_reverse(const void *, void *);
747 extern int inet6_rth_segments(const void *);
748 extern struct in6_addr *inet6_rth_getaddr(const void *, int);
749 __END_DECLS
750
751 #endif /* __BSD_VISIBLE */
752
753 #endif /* !_NETINET6_IN6_H_ */
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