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 * $FreeBSD$
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 #if defined(_KERNEL) || defined(_STANDALONE) /* 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 */
223 #if __BSD_VISIBLE
224 #define IN6_ARE_ADDR_EQUAL(a, b) \
225 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
226 #endif
227
228 /*
229 * Unspecified
230 */
231 #define IN6_IS_ADDR_UNSPECIFIED(a) \
232 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
233 (a)->__u6_addr.__u6_addr32[1] == 0 && \
234 (a)->__u6_addr.__u6_addr32[2] == 0 && \
235 (a)->__u6_addr.__u6_addr32[3] == 0)
236
237 /*
238 * Loopback
239 */
240 #define IN6_IS_ADDR_LOOPBACK(a) \
241 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
242 (a)->__u6_addr.__u6_addr32[1] == 0 && \
243 (a)->__u6_addr.__u6_addr32[2] == 0 && \
244 (a)->__u6_addr.__u6_addr32[3] == ntohl(1))
245
246 /*
247 * IPv4 compatible
248 */
249 #define IN6_IS_ADDR_V4COMPAT(a) \
250 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
251 (a)->__u6_addr.__u6_addr32[1] == 0 && \
252 (a)->__u6_addr.__u6_addr32[2] == 0 && \
253 (a)->__u6_addr.__u6_addr32[3] != 0 && \
254 (a)->__u6_addr.__u6_addr32[3] != ntohl(1))
255
256 /*
257 * Mapped
258 */
259 #define IN6_IS_ADDR_V4MAPPED(a) \
260 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
261 (a)->__u6_addr.__u6_addr32[1] == 0 && \
262 (a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff))
263
264 /*
265 * KAME Scope Values
266 */
267
268 #ifdef _KERNEL /* XXX nonstandard */
269 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
270 #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
271 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
272 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
273 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
274 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
275 #else
276 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
277 #define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
278 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
279 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
280 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
281 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
282 #endif
283
284 /*
285 * Unicast Scope
286 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
287 */
288 #define IN6_IS_ADDR_LINKLOCAL(a) \
289 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
290 #define IN6_IS_ADDR_SITELOCAL(a) \
291 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
292
293 /*
294 * Multicast
295 */
296 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
297
298 #ifdef _KERNEL /* XXX nonstandard */
299 #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
300 #else
301 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
302 #endif
303
304 /*
305 * Multicast Scope
306 */
307 #ifdef _KERNEL /* refers nonstandard items */
308 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
309 (IN6_IS_ADDR_MULTICAST(a) && \
310 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
311 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
312 (IN6_IS_ADDR_MULTICAST(a) && \
313 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
314 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
315 (IN6_IS_ADDR_MULTICAST(a) && \
316 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
317 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
318 (IN6_IS_ADDR_MULTICAST(a) && \
319 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
320 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
321 (IN6_IS_ADDR_MULTICAST(a) && \
322 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
323 #define IN6_IS_ADDR_MC_GLOBAL(a) \
324 (IN6_IS_ADDR_MULTICAST(a) && \
325 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
326 #else
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 #endif
343
344 #ifdef _KERNEL /* nonstandard */
345 /*
346 * KAME Scope
347 */
348 #define IN6_IS_SCOPE_LINKLOCAL(a) \
349 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
350 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
351 #define IN6_IS_SCOPE_EMBED(a) \
352 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
353 (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
354 (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
355
356 #define IFA6_IS_DEPRECATED(a) \
357 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
358 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) > \
359 (a)->ia6_lifetime.ia6t_pltime)
360 #define IFA6_IS_INVALID(a) \
361 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
362 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) > \
363 (a)->ia6_lifetime.ia6t_vltime)
364 #endif /* _KERNEL */
365
366 /*
367 * IP6 route structure
368 */
369 #if __BSD_VISIBLE
370 struct nhop_object;
371 struct route_in6 {
372 struct nhop_object *ro_nh;
373 struct llentry *ro_lle;
374 /*
375 * ro_prepend and ro_plen are only used for bpf to pass in a
376 * preformed header. They are not cacheable.
377 */
378 char *ro_prepend;
379 uint16_t ro_plen;
380 uint16_t ro_flags;
381 uint16_t ro_mtu; /* saved ro_rt mtu */
382 uint16_t spare;
383 struct sockaddr_in6 ro_dst;
384 };
385 #endif
386
387 #ifdef _KERNEL
388 #define MTAG_ABI_IPV6 1444287380 /* IPv6 ABI */
389 #define IPV6_TAG_DIRECT 0 /* direct-dispatch IPv6 */
390 #endif /* _KERNEL */
391
392 /*
393 * Options for use with [gs]etsockopt at the IPV6 level.
394 * First word of comment is data type; bool is stored in int.
395 */
396 /* no hdrincl */
397 #if 0 /* the followings are relic in IPv4 and hence are disabled */
398 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
399 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
400 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
401 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
402 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
403 #endif
404 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
405 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
406 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
407 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
408 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
409 #define IPV6_JOIN_GROUP 12 /* ipv6_mreq; join a group membership */
410 #define IPV6_LEAVE_GROUP 13 /* ipv6_mreq; leave a group membership */
411 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
412 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
413 /* RFC2292 options */
414 #ifdef _KERNEL
415 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
416 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
417 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
418 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
419 #define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
420 #define IPV6_2292RTHDR 24 /* bool; routing header */
421 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
422 #endif
423
424 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
425 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
426 #ifndef _KERNEL
427 #define IPV6_BINDV6ONLY IPV6_V6ONLY
428 #endif
429
430 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
431 /* 29; unused; was IPV6_FAITH */
432 #if 1 /* IPV6FIREWALL */
433 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
434 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
435 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
436 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
437 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
438 #endif
439
440 /* new socket options introduced in RFC3542 */
441 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
442
443 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
444 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
445 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */
446 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
447 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
448 #ifdef _KERNEL
449 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
450 #endif
451
452 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
453 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
454
455 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
456 4 bytes int; MTU notification (cmsg) */
457 #if 0 /*obsoleted during 2292bis -> 3542*/
458 #define IPV6_REACHCONF 45 /* no data; ND reachability confirm
459 (cmsg only/not in of RFC3542) */
460 #endif
461
462 /* more new socket options introduced in RFC3542 */
463 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
464 #define IPV6_HOPLIMIT 47 /* int; send hop limit */
465 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
466 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
467 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
468 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
469 #if 0
470 #define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options */
471 /* obsoleted by RFC3542 */
472 #endif
473
474 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
475
476 #define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
477
478 #define IPV6_TCLASS 61 /* int; send traffic class value */
479 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
480
481 #define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
482 * the source address.
483 */
484
485 #define IPV6_BINDANY 64 /* bool: allow bind to any address */
486
487 #define IPV6_BINDMULTI 65 /* bool; allow multibind to same addr/port */
488 #define IPV6_RSS_LISTEN_BUCKET 66 /* int; set RSS listen bucket */
489 #define IPV6_FLOWID 67 /* int; flowid of given socket */
490 #define IPV6_FLOWTYPE 68 /* int; flowtype of given socket */
491 #define IPV6_RSSBUCKETID 69 /* int; RSS bucket ID of given socket */
492 #define IPV6_RECVFLOWID 70 /* bool; receive IP6 flowid/flowtype w/ datagram */
493 #define IPV6_RECVRSSBUCKETID 71 /* bool; receive IP6 RSS bucket id w/ datagram */
494
495 #define IPV6_ORIGDSTADDR 72 /* bool: allow getting dstaddr /port info */
496 #define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR
497
498 /*
499 * The following option is private; do not use it from user applications.
500 * It is deliberately defined to the same value as IP_MSFILTER.
501 */
502 #define IPV6_MSFILTER 74 /* struct __msfilterreq;
503 * set/get multicast source filter list.
504 */
505
506 /* The following option deals with the 802.1Q Ethernet Priority Code Point */
507 #define IPV6_VLAN_PCP 75 /* int; set/get PCP used for packet, */
508 /* -1 use interface default */
509
510 /* to define items, should talk with KAME guys first, for *BSD compatibility */
511
512 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
513 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
514 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
515
516 /*
517 * Defaults and limits for options
518 */
519 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
520 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
521
522 /*
523 * Limit for IPv6 multicast memberships
524 */
525 #define IPV6_MAX_MEMBERSHIPS 4095
526
527 /*
528 * Default resource limits for IPv6 multicast source filtering.
529 * These may be modified by sysctl.
530 */
531 #define IPV6_MAX_GROUP_SRC_FILTER 512 /* sources per group */
532 #define IPV6_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */
533
534 /*
535 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
536 */
537 struct ipv6_mreq {
538 struct in6_addr ipv6mr_multiaddr;
539 unsigned int ipv6mr_interface;
540 };
541
542 /*
543 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
544 */
545 struct in6_pktinfo {
546 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
547 unsigned int ipi6_ifindex; /* send/recv interface index */
548 };
549
550 /*
551 * Control structure for IPV6_RECVPATHMTU socket option.
552 */
553 struct ip6_mtuinfo {
554 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
555 uint32_t ip6m_mtu;
556 };
557
558 /*
559 * Argument for IPV6_PORTRANGE:
560 * - which range to search when port is unspecified at bind() or connect()
561 */
562 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
563 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
564 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
565
566 #if __BSD_VISIBLE
567 /*
568 * Definitions for inet6 sysctl operations.
569 *
570 * Third level is protocol number.
571 * Fourth level is desired variable within that protocol.
572 */
573 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
574
575 /*
576 * Names for IP sysctl objects
577 */
578 #define IPV6CTL_FORWARDING 1 /* act as router */
579 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
580 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
581 #ifdef notyet
582 #define IPV6CTL_DEFMTU 4 /* default MTU */
583 #endif
584 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
585 #define IPV6CTL_STATS 6 /* stats */
586 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
587 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
588 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
589 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
590 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
591 #define IPV6CTL_ACCEPT_RTADV 12
592 /* 13; unused; was: IPV6CTL_KEEPFAITH */
593 #define IPV6CTL_LOG_INTERVAL 14
594 #define IPV6CTL_HDRNESTLIMIT 15
595 #define IPV6CTL_DAD_COUNT 16
596 #define IPV6CTL_AUTO_FLOWLABEL 17
597 #define IPV6CTL_DEFMCASTHLIM 18
598 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
599 #define IPV6CTL_KAME_VERSION 20
600 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
601 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
602 #if 0 /* obsolete */
603 #define IPV6CTL_MAPPED_ADDR 23
604 #endif
605 #define IPV6CTL_V6ONLY 24
606 /* IPV6CTL_RTEXPIRE 25 deprecated */
607 /* IPV6CTL_RTMINEXPIRE 26 deprecated */
608 /* IPV6CTL_RTMAXCACHE 27 deprecated */
609
610 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
611 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
612 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
613 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
614 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
615 #define IPV6CTL_PREFER_TEMPADDR 37 /* prefer temporary addr as src */
616 #define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
617 #define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */
618
619 #define IPV6CTL_MAXFRAGS 41 /* max fragments */
620 #if 0
621 #define IPV6CTL_IFQ 42 /* ip6intrq node */
622 #define IPV6CTL_ISATAPRTR 43 /* isatap router */
623 #endif
624 #define IPV6CTL_MCAST_PMTU 44 /* enable pMTU discovery for multicast? */
625
626 /* New entries should be added here from current IPV6CTL_MAXID value. */
627 /* to define items, should talk with KAME guys first, for *BSD compatibility */
628 #define IPV6CTL_STEALTH 45
629
630 #define ICMPV6CTL_ND6_ONLINKNSRFC4861 47
631 #define IPV6CTL_NO_RADR 48 /* No defroute from RA */
632 #define IPV6CTL_NORBIT_RAIF 49 /* Disable R-bit in NA on RA
633 * receiving IF. */
634 #define IPV6CTL_RFC6204W3 50 /* Accept defroute even when forwarding
635 enabled */
636 #define IPV6CTL_INTRQMAXLEN 51 /* max length of IPv6 netisr queue */
637 #define IPV6CTL_INTRDQMAXLEN 52 /* max length of direct IPv6 netisr
638 * queue */
639 #define IPV6CTL_MAXFRAGSPERPACKET 53 /* Max fragments per packet */
640 #define IPV6CTL_MAXFRAGBUCKETSIZE 54 /* Max reassembly queues per bucket */
641 #define IPV6CTL_MAXID 55
642 #endif /* __BSD_VISIBLE */
643
644 /*
645 * Since both netinet/ and netinet6/ call into netipsec/ and netpfil/,
646 * the protocol specific mbuf flags are shared between them.
647 */
648 #define M_FASTFWD_OURS M_PROTO1 /* changed dst to local */
649 #define M_IP6_NEXTHOP M_PROTO2 /* explicit ip nexthop */
650 #define M_IP_NEXTHOP M_PROTO2 /* explicit ip nexthop */
651 #define M_SKIP_FIREWALL M_PROTO3 /* skip firewall processing */
652 #define M_AUTHIPHDR M_PROTO4
653 #define M_DECRYPTED M_PROTO5
654 #define M_LOOP M_PROTO6
655 #define M_AUTHIPDGM M_PROTO7
656 #define M_RTALERT_MLD M_PROTO8
657 #define M_FRAGMENTED M_PROTO9 /* contained fragment header */
658
659 #ifdef _KERNEL
660 struct cmsghdr;
661 struct ip6_hdr;
662
663 int in6_cksum_pseudo(struct ip6_hdr *, uint32_t, uint8_t, uint16_t);
664 int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t);
665 int in6_cksum_partial(struct mbuf *, u_int8_t, u_int32_t, u_int32_t,
666 u_int32_t);
667 int in6_localaddr(struct in6_addr *);
668 int in6_localip(struct in6_addr *);
669 int in6_ifhasaddr(struct ifnet *, struct in6_addr *);
670 int in6_addrscope(const struct in6_addr *);
671 char *ip6_sprintf(char *, const struct in6_addr *);
672 struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
673 extern void in6_if_up(struct ifnet *);
674 struct sockaddr;
675 extern u_char ip6_protox[];
676
677 void in6_sin6_2_sin(struct sockaddr_in *sin,
678 struct sockaddr_in6 *sin6);
679 void in6_sin_2_v4mapsin6(struct sockaddr_in *sin,
680 struct sockaddr_in6 *sin6);
681 void in6_sin6_2_sin_in_sock(struct sockaddr *nam);
682 void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam);
683 extern void addrsel_policy_init(void);
684
685 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
686 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
687 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
688
689 #endif /* _KERNEL */
690
691 #ifndef _SIZE_T_DECLARED
692 typedef __size_t size_t;
693 #define _SIZE_T_DECLARED
694 #endif
695
696 #ifndef _SOCKLEN_T_DECLARED
697 typedef __socklen_t socklen_t;
698 #define _SOCKLEN_T_DECLARED
699 #endif
700
701 #if __BSD_VISIBLE
702
703 __BEGIN_DECLS
704 struct cmsghdr;
705
706 extern int inet6_option_space(int);
707 extern int inet6_option_init(void *, struct cmsghdr **, int);
708 extern int inet6_option_append(struct cmsghdr *, const uint8_t *,
709 int, int);
710 extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
711 extern int inet6_option_next(const struct cmsghdr *, uint8_t **);
712 extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int);
713
714 extern size_t inet6_rthdr_space(int, int);
715 extern struct cmsghdr *inet6_rthdr_init(void *, int);
716 extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
717 unsigned int);
718 extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
719 #if 0 /* not implemented yet */
720 extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
721 #endif
722 extern int inet6_rthdr_segments(const struct cmsghdr *);
723 extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
724 extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
725
726 extern int inet6_opt_init(void *, socklen_t);
727 extern int inet6_opt_append(void *, socklen_t, int, uint8_t, socklen_t,
728 uint8_t, void **);
729 extern int inet6_opt_finish(void *, socklen_t, int);
730 extern int inet6_opt_set_val(void *, int, void *, socklen_t);
731
732 extern int inet6_opt_next(void *, socklen_t, int, uint8_t *, socklen_t *,
733 void **);
734 extern int inet6_opt_find(void *, socklen_t, int, uint8_t, socklen_t *,
735 void **);
736 extern int inet6_opt_get_val(void *, int, void *, socklen_t);
737 extern socklen_t inet6_rth_space(int, int);
738 extern void *inet6_rth_init(void *, socklen_t, int, int);
739 extern int inet6_rth_add(void *, const struct in6_addr *);
740 extern int inet6_rth_reverse(const void *, void *);
741 extern int inet6_rth_segments(const void *);
742 extern struct in6_addr *inet6_rth_getaddr(const void *, int);
743 __END_DECLS
744
745 #endif /* __BSD_VISIBLE */
746
747 #endif /* !_NETINET6_IN6_H_ */
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