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
63#ifndef __KAME_NETINET_IN_H_INCLUDED_
64#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
65#endif
66
67#ifndef _NETINET6_IN6_H_
68#define _NETINET6_IN6_H_
69
70/*
71 * Identification of the network protocol stack
72 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
73 * has the table of implementation/integration differences.
74 */
75#define __KAME__
76#define __KAME_VERSION "FreeBSD"
77
78/*
79 * IPv6 port allocation rules should mirror the IPv4 rules and are controlled
80 * by the net.inet.ip.portrange sysctl tree. The following defines exist
81 * for compatibility with userland applications that need them.
82 */
83#if __BSD_VISIBLE
84#define IPV6PORT_RESERVED 1024
85#define IPV6PORT_ANONMIN 49152
86#define IPV6PORT_ANONMAX 65535
87#define IPV6PORT_RESERVEDMIN 600
88#define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
89#endif
90
91/*
92 * IPv6 address
93 */
94struct in6_addr {
95 union {
96 uint8_t __u6_addr8[16];
97 uint16_t __u6_addr16[8];
98 uint32_t __u6_addr32[4];
99 } __u6_addr; /* 128-bit IP6 address */
100};
101
102#define s6_addr __u6_addr.__u6_addr8
103#if __BSD_VISIBLE
104/*
105 * s6_addr is the only in6_addr element specified in RFCs 2553 and 3493,
106 * also in POSIX 1003.1-2017. The following three definitions were not
107 * exposed to user programs in FreeBSD before 14.1, or in other BSDs,
108 * and are thus less portable than s6_addr.
109 */
110#define s6_addr8 __u6_addr.__u6_addr8
111#define s6_addr16 __u6_addr.__u6_addr16
112#define s6_addr32 __u6_addr.__u6_addr32
113#endif
114
115#define INET6_ADDRSTRLEN 46
116
117/*
118 * XXX missing POSIX.1-2001 macro IPPROTO_IPV6.
119 */
120
121/*
122 * Socket address for IPv6
123 */
124#if __BSD_VISIBLE
125#define SIN6_LEN
126#endif
127
128struct sockaddr_in6 {
129 uint8_t sin6_len; /* length of this struct */
130 sa_family_t sin6_family; /* AF_INET6 */
131 in_port_t sin6_port; /* Transport layer port # */
132 uint32_t sin6_flowinfo; /* IP6 flow information */
133 struct in6_addr sin6_addr; /* IP6 address */
134 uint32_t sin6_scope_id; /* scope zone index */
135};
136
137/*
138 * Local definition for masks
139 */
140#ifdef _KERNEL /* XXX nonstandard */
141#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
142#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
143 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
144#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
145 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
146#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
147 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
148#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
149 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
150#endif
151
152#ifdef _KERNEL
153extern const struct sockaddr_in6 sa6_any;
154
155extern const struct in6_addr in6mask0;
156extern const struct in6_addr in6mask32;
157extern const struct in6_addr in6mask64;
158extern const struct in6_addr in6mask96;
159extern const struct in6_addr in6mask128;
160#endif /* _KERNEL */
161
162/*
163 * Macros started with IPV6_ADDR is KAME local
164 */
165#ifdef _KERNEL /* XXX nonstandard */
166#if _BYTE_ORDER == _BIG_ENDIAN
167#define IPV6_ADDR_INT32_ONE 1
168#define IPV6_ADDR_INT32_TWO 2
169#define IPV6_ADDR_INT32_MNL 0xff010000
170#define IPV6_ADDR_INT32_MLL 0xff020000
171#define IPV6_ADDR_INT32_SMP 0x0000ffff
172#define IPV6_ADDR_INT16_ULL 0xfe80
173#define IPV6_ADDR_INT16_USL 0xfec0
174#define IPV6_ADDR_INT16_MLL 0xff02
175#elif _BYTE_ORDER == _LITTLE_ENDIAN
176#define IPV6_ADDR_INT32_ONE 0x01000000
177#define IPV6_ADDR_INT32_TWO 0x02000000
178#define IPV6_ADDR_INT32_MNL 0x000001ff
179#define IPV6_ADDR_INT32_MLL 0x000002ff
180#define IPV6_ADDR_INT32_SMP 0xffff0000
181#define IPV6_ADDR_INT16_ULL 0x80fe
182#define IPV6_ADDR_INT16_USL 0xc0fe
183#define IPV6_ADDR_INT16_MLL 0x02ff
184#endif
185#endif
186
187/*
188 * Definition of some useful macros to handle IP6 addresses
189 */
190#if __BSD_VISIBLE
191#define IN6ADDR_ANY_INIT \
192 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
193 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
194#define IN6ADDR_LOOPBACK_INIT \
195 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
196 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
197#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
198 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
199 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
200#define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
201 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
202 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
203#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
204 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
206#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
207 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
208 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
209#define IN6ADDR_LINKLOCAL_ALLV2ROUTERS_INIT \
210 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
211 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16 }}}
212#endif
213
214extern const struct in6_addr in6addr_any;
215extern const struct in6_addr in6addr_loopback;
216#if __BSD_VISIBLE
217extern const struct in6_addr in6addr_nodelocal_allnodes;
218extern const struct in6_addr in6addr_linklocal_allnodes;
219extern const struct in6_addr in6addr_linklocal_allrouters;
220extern const struct in6_addr in6addr_linklocal_allv2routers;
221#endif
222
223/*
224 * Equality
225 */
226#if __BSD_VISIBLE
227#define IN6_ARE_ADDR_EQUAL(a, b) \
228 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
229#endif
230
231/*
232 * Unspecified
233 */
234#define IN6_IS_ADDR_UNSPECIFIED(a) \
235 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
236 (a)->__u6_addr.__u6_addr32[1] == 0 && \
237 (a)->__u6_addr.__u6_addr32[2] == 0 && \
238 (a)->__u6_addr.__u6_addr32[3] == 0)
239
240/*
241 * Loopback
242 */
243#define IN6_IS_ADDR_LOOPBACK(a) \
244 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
245 (a)->__u6_addr.__u6_addr32[1] == 0 && \
246 (a)->__u6_addr.__u6_addr32[2] == 0 && \
247 (a)->__u6_addr.__u6_addr32[3] == ntohl(1))
248
249/*
250 * IPv4 compatible
251 */
252#define IN6_IS_ADDR_V4COMPAT(a) \
253 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
254 (a)->__u6_addr.__u6_addr32[1] == 0 && \
255 (a)->__u6_addr.__u6_addr32[2] == 0 && \
256 (a)->__u6_addr.__u6_addr32[3] != 0 && \
257 (a)->__u6_addr.__u6_addr32[3] != ntohl(1))
258
259/*
260 * Mapped
261 */
262#define IN6_IS_ADDR_V4MAPPED(a) \
263 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
264 (a)->__u6_addr.__u6_addr32[1] == 0 && \
265 (a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff))
266
267/*
268 * KAME Scope Values
269 */
270
271#ifdef _KERNEL /* XXX nonstandard */
272#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
273#define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
274#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
275#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
276#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
277#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
278#else
279#define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
280#define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
281#define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
282#define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
283#define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
284#define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
285#endif
286
287/*
288 * Unicast Scope
289 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
290 */
291#define IN6_IS_ADDR_LINKLOCAL(a) \
292 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
293#define IN6_IS_ADDR_SITELOCAL(a) \
294 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
295
296/*
297 * Multicast
298 */
299#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
300
301#ifdef _KERNEL /* XXX nonstandard */
302#define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
303#else
304#define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
305#endif
306
307/*
308 * Multicast Scope
309 */
310#ifdef _KERNEL /* refers nonstandard items */
311#define IN6_IS_ADDR_MC_NODELOCAL(a) \
312 (IN6_IS_ADDR_MULTICAST(a) && \
313 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
314#define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
315 (IN6_IS_ADDR_MULTICAST(a) && \
316 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
317#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
318 (IN6_IS_ADDR_MULTICAST(a) && \
319 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
320#define IN6_IS_ADDR_MC_SITELOCAL(a) \
321 (IN6_IS_ADDR_MULTICAST(a) && \
322 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
323#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
324 (IN6_IS_ADDR_MULTICAST(a) && \
325 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
326#define IN6_IS_ADDR_MC_GLOBAL(a) \
327 (IN6_IS_ADDR_MULTICAST(a) && \
328 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
329#else
330#define IN6_IS_ADDR_MC_NODELOCAL(a) \
331 (IN6_IS_ADDR_MULTICAST(a) && \
332 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
333#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
334 (IN6_IS_ADDR_MULTICAST(a) && \
335 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
336#define IN6_IS_ADDR_MC_SITELOCAL(a) \
337 (IN6_IS_ADDR_MULTICAST(a) && \
338 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
339#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
340 (IN6_IS_ADDR_MULTICAST(a) && \
341 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
342#define IN6_IS_ADDR_MC_GLOBAL(a) \
343 (IN6_IS_ADDR_MULTICAST(a) && \
344 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
345#endif
346
347#ifdef _KERNEL /* nonstandard */
348/*
349 * KAME Scope
350 */
351#define IN6_IS_SCOPE_LINKLOCAL(a) \
352 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
353 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
354#define IN6_IS_SCOPE_EMBED(a) \
355 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
356 (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
357 (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
358
359#define IFA6_IS_DEPRECATED(a) \
360 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
361 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) >= \
362 (a)->ia6_lifetime.ia6t_pltime)
363#define IFA6_IS_INVALID(a) \
364 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
365 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) >= \
366 (a)->ia6_lifetime.ia6t_vltime)
367#endif /* _KERNEL */
368
369/*
370 * IP6 route structure
371 */
372#if __BSD_VISIBLE
373struct nhop_object;
374struct route_in6 {
375 struct nhop_object *ro_nh;
376 struct llentry *ro_lle;
377 /*
378 * ro_prepend and ro_plen are only used for bpf to pass in a
379 * preformed header. They are not cacheable.
380 */
381 char *ro_prepend;
382 uint16_t ro_plen;
383 uint16_t ro_flags;
384 uint16_t ro_mtu; /* saved ro_rt mtu */
385 uint16_t spare;
386 struct sockaddr_in6 ro_dst;
387};
388#endif
389
390#ifdef _KERNEL
391#define MTAG_ABI_IPV6 1444287380 /* IPv6 ABI */
392#define IPV6_TAG_DIRECT 0 /* direct-dispatch IPv6 */
393#endif /* _KERNEL */
394
395/*
396 * Options for use with [gs]etsockopt at the IPV6 level.
397 * First word of comment is data type; bool is stored in int.
398 */
399/* no hdrincl */
400#if 0 /* the followings are relic in IPv4 and hence are disabled */
401#define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
402#define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
403#define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
404#define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
405#define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
406#endif
407#define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
408#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
409#define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
410#define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
411#define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
412#define IPV6_JOIN_GROUP 12 /* ipv6_mreq; join a group membership */
413#define IPV6_LEAVE_GROUP 13 /* ipv6_mreq; leave a group membership */
414#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
415#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
416/* RFC2292 options */
417#ifdef _KERNEL
418#define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
419#define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
420#define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
421#define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
422#define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
423#define IPV6_2292RTHDR 24 /* bool; routing header */
424#define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
425#endif
426
427#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
428#define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
429#ifndef _KERNEL
430#define IPV6_BINDV6ONLY IPV6_V6ONLY
431#endif
432
433#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
434 /* 29; unused; was IPV6_FAITH */
435#if 1 /* IPV6FIREWALL */
436#define IPV6_FW_ADD 30 /* add a firewall rule to chain */
437#define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
438#define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
439#define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
440#define IPV6_FW_GET 34 /* get entire firewall rule chain */
441#endif
442
443/* new socket options introduced in RFC3542 */
444#define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
445
446#define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
447#define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
448#define IPV6_RECVRTHDR 38 /* bool; recv routing header */
449#define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
450#define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
451#ifdef _KERNEL
452#define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
453#endif
454
455#define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
456#define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
457
458#define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
459 4 bytes int; MTU notification (cmsg) */
460#if 0 /*obsoleted during 2292bis -> 3542*/
461#define IPV6_REACHCONF 45 /* no data; ND reachability confirm
462 (cmsg only/not in of RFC3542) */
463#endif
464
465/* more new socket options introduced in RFC3542 */
466#define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
467#define IPV6_HOPLIMIT 47 /* int; send hop limit */
468#define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
469#define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
470#define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
471#define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
472#if 0
473#define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options */
474 /* obsoleted by RFC3542 */
475#endif
476
477#define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
478
479#define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
480
481#define IPV6_TCLASS 61 /* int; send traffic class value */
482#define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
483
484#define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
485 * the source address.
486 */
487
488#define IPV6_BINDANY 64 /* bool: allow bind to any address */
489 /* unused; was IPV6_BIND_MULTI */
490 /* unused; was IPV6_RSS_LISTEN_BUCKET */
491#define IPV6_FLOWID 67 /* int; flowid of given socket */
492#define IPV6_FLOWTYPE 68 /* int; flowtype of given socket */
493#define IPV6_RSSBUCKETID 69 /* int; RSS bucket ID of given socket */
494#define IPV6_RECVFLOWID 70 /* bool; receive IP6 flowid/flowtype w/ datagram */
495#define IPV6_RECVRSSBUCKETID 71 /* bool; receive IP6 RSS bucket id w/ datagram */
496
497#define IPV6_ORIGDSTADDR 72 /* bool: allow getting dstaddr /port info */
498#define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR
499
500/*
501 * The following option is private; do not use it from user applications.
502 * It is deliberately defined to the same value as IP_MSFILTER.
503 */
504#define IPV6_MSFILTER 74 /* struct __msfilterreq;
505 * set/get multicast source filter list.
506 */
507
508/* The following option deals with the 802.1Q Ethernet Priority Code Point */
509#define IPV6_VLAN_PCP 75 /* int; set/get PCP used for packet, */
510 /* -1 use interface default */
511
512/* to define items, should talk with KAME guys first, for *BSD compatibility */
513
514#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
515#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
516#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
517
518/*
519 * Defaults and limits for options
520 */
521#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
522#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
523
524/*
525 * Limit for IPv6 multicast memberships
526 */
527#define IPV6_MAX_MEMBERSHIPS 4095
528
529/*
530 * Default resource limits for IPv6 multicast source filtering.
531 * These may be modified by sysctl.
532 */
533#define IPV6_MAX_GROUP_SRC_FILTER 512 /* sources per group */
534#define IPV6_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */
535
536/*
537 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
538 */
539struct ipv6_mreq {
540 struct in6_addr ipv6mr_multiaddr;
541 unsigned int ipv6mr_interface;
542};
543
544/*
545 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
546 */
547struct in6_pktinfo {
548 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
549 unsigned int ipi6_ifindex; /* send/recv interface index */
550};
551
552/*
553 * Control structure for IPV6_RECVPATHMTU socket option.
554 */
555struct ip6_mtuinfo {
556 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
557 uint32_t ip6m_mtu;
558};
559
560/*
561 * Argument for IPV6_PORTRANGE:
562 * - which range to search when port is unspecified at bind() or connect()
563 */
564#define IPV6_PORTRANGE_DEFAULT 0 /* default range */
565#define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
566#define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
567
568#if __BSD_VISIBLE
569/*
570 * Definitions for inet6 sysctl operations.
571 *
572 * Third level is protocol number.
573 * Fourth level is desired variable within that protocol.
574 */
575#define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
576
577/*
578 * Names for IP sysctl objects
579 */
580#define IPV6CTL_FORWARDING 1 /* act as router */
581#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
582#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
583#ifdef notyet
584#define IPV6CTL_DEFMTU 4 /* default MTU */
585#endif
586#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
587#define IPV6CTL_STATS 6 /* stats */
588#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
589#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
590#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
591#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
592#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
593#define IPV6CTL_ACCEPT_RTADV 12
594 /* 13; unused; was: IPV6CTL_KEEPFAITH */
595#define IPV6CTL_LOG_INTERVAL 14
596#define IPV6CTL_HDRNESTLIMIT 15
597#define IPV6CTL_DAD_COUNT 16
598#define IPV6CTL_AUTO_FLOWLABEL 17
599#define IPV6CTL_DEFMCASTHLIM 18
600#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
601#define IPV6CTL_KAME_VERSION 20
602#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
603#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
604#if 0 /* obsolete */
605#define IPV6CTL_MAPPED_ADDR 23
606#endif
607#define IPV6CTL_V6ONLY 24
608/* IPV6CTL_RTEXPIRE 25 deprecated */
609/* IPV6CTL_RTMINEXPIRE 26 deprecated */
610/* IPV6CTL_RTMAXCACHE 27 deprecated */
611
612#define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
613#define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
614#define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
615#define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
616#define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
617#define IPV6CTL_PREFER_TEMPADDR 37 /* prefer temporary addr as src */
618#define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
619#define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */
620
621#define IPV6CTL_MAXFRAGS 41 /* max fragments */
622#if 0
623#define IPV6CTL_IFQ 42 /* ip6intrq node */
624#define IPV6CTL_ISATAPRTR 43 /* isatap router */
625#endif
626#define IPV6CTL_MCAST_PMTU 44 /* enable pMTU discovery for multicast? */
627
628/* New entries should be added here from current IPV6CTL_MAXID value. */
629/* to define items, should talk with KAME guys first, for *BSD compatibility */
630#define IPV6CTL_STEALTH 45
631
632#define ICMPV6CTL_ND6_ONLINKNSRFC4861 47
633#define IPV6CTL_NO_RADR 48 /* No defroute from RA */
634#define IPV6CTL_NORBIT_RAIF 49 /* Disable R-bit in NA on RA
635 * receiving IF. */
636#define IPV6CTL_RFC6204W3 50 /* Accept defroute even when forwarding
637 enabled */
638#define IPV6CTL_INTRQMAXLEN 51 /* max length of IPv6 netisr queue */
639#define IPV6CTL_INTRDQMAXLEN 52 /* max length of direct IPv6 netisr
640 * queue */
641#define IPV6CTL_MAXFRAGSPERPACKET 53 /* Max fragments per packet */
642#define IPV6CTL_MAXFRAGBUCKETSIZE 54 /* Max reassembly queues per bucket */
643#define IPV6CTL_MAXID 55
644#endif /* __BSD_VISIBLE */
645
646/*
647 * Since both netinet/ and netinet6/ call into netipsec/ and netpfil/,
648 * the protocol specific mbuf flags are shared between them.
649 */
650#define M_FASTFWD_OURS M_PROTO1 /* changed dst to local */
651#define M_IP6_NEXTHOP M_PROTO2 /* explicit ip nexthop */
652#define M_IP_NEXTHOP M_PROTO2 /* explicit ip nexthop */
653#define M_SKIP_FIREWALL M_PROTO3 /* skip firewall processing */
654#define M_AUTHIPHDR M_PROTO4
655#define M_DECRYPTED M_PROTO5
656#define M_LOOP M_PROTO6
657#define M_AUTHIPDGM M_PROTO7
658#define M_RTALERT_MLD M_PROTO8
659#define M_FRAGMENTED M_PROTO9 /* contained fragment header */
660
661#ifdef _KERNEL
662struct cmsghdr;
663struct ip6_hdr;
664
665int in6_cksum(struct mbuf *, uint8_t, uint32_t, uint32_t);
666int in6_cksum_partial(struct mbuf *, uint8_t, uint32_t, uint32_t, uint32_t);
667int in6_cksum_partial_l2(struct mbuf *m, uint8_t nxt, uint32_t off_l3,
668 uint32_t off_l4, uint32_t len, uint32_t cov);
669int in6_cksum_pseudo(struct ip6_hdr *, uint32_t, uint8_t, uint16_t);
670
671int in6_localaddr(struct in6_addr *);
672int in6_localip(struct in6_addr *);
673bool in6_localip_fib(struct in6_addr *, uint16_t);
674int in6_ifhasaddr(struct ifnet *, struct in6_addr *);
675int in6_addrscope(const struct in6_addr *);
676char *ip6_sprintf(char *, const struct in6_addr *);
677struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
678extern void in6_if_up(struct ifnet *);
679struct sockaddr;
680
681void in6_sin6_2_sin(struct sockaddr_in *sin,
682 const struct sockaddr_in6 *sin6);
683void in6_sin_2_v4mapsin6(const struct sockaddr_in *sin,
684 struct sockaddr_in6 *sin6);
685void in6_sin6_2_sin_in_sock(struct sockaddr *nam);
686extern void addrsel_policy_init(void);
687
688#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
689#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
690#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
691
692#endif /* _KERNEL */
693
694#ifndef _SIZE_T_DECLARED
695typedef __size_t size_t;
696#define _SIZE_T_DECLARED
697#endif
698
699#ifndef _SOCKLEN_T_DECLARED
700typedef __socklen_t socklen_t;
701#define _SOCKLEN_T_DECLARED
702#endif
703
704#if __BSD_VISIBLE
705
706__BEGIN_DECLS
707struct cmsghdr;
708
709extern int inet6_option_space(int);
710extern int inet6_option_init(void *, struct cmsghdr **, int);
711extern int inet6_option_append(struct cmsghdr *, const uint8_t *,
712 int, int);
713extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
714extern int inet6_option_next(const struct cmsghdr *, uint8_t **);
715extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int);
716
717extern size_t inet6_rthdr_space(int, int);
718extern struct cmsghdr *inet6_rthdr_init(void *, int);
719extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
720 unsigned int);
721extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
722#if 0 /* not implemented yet */
723extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
724#endif
725extern int inet6_rthdr_segments(const struct cmsghdr *);
726extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
727extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
728
729extern int inet6_opt_init(void *, socklen_t);
730extern int inet6_opt_append(void *, socklen_t, int, uint8_t, socklen_t,
731 uint8_t, void **);
732extern int inet6_opt_finish(void *, socklen_t, int);
733extern int inet6_opt_set_val(void *, int, void *, socklen_t);
734
735extern int inet6_opt_next(void *, socklen_t, int, uint8_t *, socklen_t *,
736 void **);
737extern int inet6_opt_find(void *, socklen_t, int, uint8_t, socklen_t *,
738 void **);
739extern int inet6_opt_get_val(void *, int, void *, socklen_t);
740extern socklen_t inet6_rth_space(int, int);
741extern void *inet6_rth_init(void *, socklen_t, int, int);
742extern int inet6_rth_add(void *, const struct in6_addr *);
743extern int inet6_rth_reverse(const void *, void *);
744extern int inet6_rth_segments(const void *);
745extern struct in6_addr *inet6_rth_getaddr(const void *, int);
746__END_DECLS
747
748#endif /* __BSD_VISIBLE */
749
750#endif /* !_NETINET6_IN6_H_ */