1/* $NetBSD: in6.h,v 1.87 2016/02/15 14:59:03 rtr Exp $ */
2/* $KAME: in6.h,v 1.83 2001/03/29 02:55:07 jinmei Exp $ */
3
4/*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33/*
34 * Copyright (c) 1982, 1986, 1990, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)in.h 8.3 (Berkeley) 1/3/94
62 */
63
64#ifndef _NETINET6_IN6_H_
65#define _NETINET6_IN6_H_
66
67#include <sys/featuretest.h>
68
69#ifndef __KAME_NETINET_IN_H_INCLUDED_
70#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
71#endif
72
73#include <sys/socket.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 "NetBSD-current"
82
83/*
84 * Local port number conventions:
85 *
86 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
87 * unless a kernel is compiled with IPNOPRIVPORTS defined.
88 *
89 * When a user does a bind(2) or connect(2) with a port number of zero,
90 * a non-conflicting local port address is chosen.
91 *
92 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
93 * that is settable by sysctl(3); net.inet.ip.anonportmin and
94 * net.inet.ip.anonportmax respectively.
95 *
96 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
97 * default assignment range.
98 *
99 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
100 *
101 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
102 * and exists only for FreeBSD compatibility purposes.
103 *
104 * The value IP_PORTRANGE_LOW changes the range to the "low" are
105 * that is (by convention) restricted to privileged processes.
106 * This convention is based on "vouchsafe" principles only.
107 * It is only secure if you trust the remote host to restrict these ports.
108 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
109 */
110
111#if defined(_NETBSD_SOURCE)
112#define IPV6PORT_RESERVED 1024
113#define IPV6PORT_ANONMIN 49152
114#define IPV6PORT_ANONMAX 65535
115#define IPV6PORT_RESERVEDMIN 600
116#define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
117#endif
118
119/*
120 * IPv6 address
121 */
122struct in6_addr {
123 union {
124 __uint8_t __u6_addr8[16];
125 __uint16_t __u6_addr16[8];
126 uint32_t __u6_addr32[4];
127 } __u6_addr; /* 128-bit IP6 address */
128};
129
130#define s6_addr __u6_addr.__u6_addr8
131#ifdef _KERNEL /* XXX nonstandard */
132#define s6_addr8 __u6_addr.__u6_addr8
133#define s6_addr16 __u6_addr.__u6_addr16
134#define s6_addr32 __u6_addr.__u6_addr32
135#endif
136
137#define INET6_ADDRSTRLEN 46
138
139/*
140 * Socket address for IPv6
141 */
142#if defined(_NETBSD_SOURCE)
143#define SIN6_LEN
144#endif
145struct sockaddr_in6 {
146 uint8_t sin6_len; /* length of this struct(socklen_t)*/
147 sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */
148 in_port_t sin6_port; /* Transport layer port */
149 uint32_t sin6_flowinfo; /* IP6 flow information */
150 struct in6_addr sin6_addr; /* IP6 address */
151 uint32_t sin6_scope_id; /* scope zone index */
152};
153
154/*
155 * Local definition for masks
156 */
157#ifdef _KERNEL /* XXX nonstandard */
158#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
159#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
160 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
161#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
162 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
163#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
164 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
165#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
166 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
167#endif
168
169#ifdef _KERNEL
170extern const struct sockaddr_in6 sa6_any;
171
172extern const struct in6_addr in6mask0;
173extern const struct in6_addr in6mask32;
174extern const struct in6_addr in6mask64;
175extern const struct in6_addr in6mask96;
176extern const struct in6_addr in6mask128;
177#endif /* _KERNEL */
178
179/*
180 * Macros started with IPV6_ADDR is KAME local
181 */
182#ifdef _KERNEL /* XXX nonstandard */
183#if BYTE_ORDER == BIG_ENDIAN
184#define IPV6_ADDR_INT32_ONE 1
185#define IPV6_ADDR_INT32_TWO 2
186#define IPV6_ADDR_INT32_MNL 0xff010000
187#define IPV6_ADDR_INT32_MLL 0xff020000
188#define IPV6_ADDR_INT32_SMP 0x0000ffff
189#define IPV6_ADDR_INT16_ULL 0xfe80
190#define IPV6_ADDR_INT16_USL 0xfec0
191#define IPV6_ADDR_INT16_MLL 0xff02
192#elif BYTE_ORDER == LITTLE_ENDIAN
193#define IPV6_ADDR_INT32_ONE 0x01000000
194#define IPV6_ADDR_INT32_TWO 0x02000000
195#define IPV6_ADDR_INT32_MNL 0x000001ff
196#define IPV6_ADDR_INT32_MLL 0x000002ff
197#define IPV6_ADDR_INT32_SMP 0xffff0000
198#define IPV6_ADDR_INT16_ULL 0x80fe
199#define IPV6_ADDR_INT16_USL 0xc0fe
200#define IPV6_ADDR_INT16_MLL 0x02ff
201#endif
202#endif
203
204/*
205 * Definition of some useful macros to handle IP6 addresses
206 */
207#define IN6ADDR_ANY_INIT \
208 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
209 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
210#define IN6ADDR_LOOPBACK_INIT \
211 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
212 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
213#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
214 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
215 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
216#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
217 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
218 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
219#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
220 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
221 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
222
223extern const struct in6_addr in6addr_any;
224extern const struct in6_addr in6addr_loopback;
225extern const struct in6_addr in6addr_nodelocal_allnodes;
226extern const struct in6_addr in6addr_linklocal_allnodes;
227extern const struct in6_addr in6addr_linklocal_allrouters;
228
229#define IN6_ARE_ADDR_EQUAL(a, b) \
230 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
231
232/*
233 * Unspecified
234 */
235#define IN6_IS_ADDR_UNSPECIFIED(a) \
236 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
237 (a)->__u6_addr.__u6_addr32[1] == 0 && \
238 (a)->__u6_addr.__u6_addr32[2] == 0 && \
239 (a)->__u6_addr.__u6_addr32[3] == 0)
240
241/*
242 * Loopback
243 */
244#define IN6_IS_ADDR_LOOPBACK(a) \
245 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
246 (a)->__u6_addr.__u6_addr32[1] == 0 && \
247 (a)->__u6_addr.__u6_addr32[2] == 0 && \
248 (a)->__u6_addr.__u6_addr32[3] == ntohl(1))
249
250/*
251 * IPv4 compatible
252 */
253#define IN6_IS_ADDR_V4COMPAT(a) \
254 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
255 (a)->__u6_addr.__u6_addr32[1] == 0 && \
256 (a)->__u6_addr.__u6_addr32[2] == 0 && \
257 (a)->__u6_addr.__u6_addr32[3] != 0 && \
258 (a)->__u6_addr.__u6_addr32[3] != ntohl(1))
259
260/*
261 * Mapped
262 */
263#define IN6_IS_ADDR_V4MAPPED(a) \
264 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
265 (a)->__u6_addr.__u6_addr32[1] == 0 && \
266 (a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff))
267
268/*
269 * KAME Scope Values
270 */
271
272#ifdef _KERNEL /* XXX nonstandard */
273#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
274#define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
275#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
276#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
277#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
278#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
279#else
280#define __IPV6_ADDR_SCOPE_NODELOCAL 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
355#define IN6_IS_SCOPE_EMBEDDABLE(__a) \
356 (IN6_IS_SCOPE_LINKLOCAL(__a) || IN6_IS_ADDR_MC_INTFACELOCAL(__a))
357
358#define IFA6_IS_DEPRECATED(a) \
359 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
360 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) > \
361 (a)->ia6_lifetime.ia6t_pltime)
362#define IFA6_IS_INVALID(a) \
363 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
364 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) > \
365 (a)->ia6_lifetime.ia6t_vltime)
366#endif
367
368/*
369 * Options for use with [gs]etsockopt at the IPV6 level.
370 * First word of comment is data type; bool is stored in int.
371 */
372/* no hdrincl */
373#if 0
374/* These are deprecated non-standard options which are no longer supported. */
375#define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
376#define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
377#define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
378#define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
379#define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
380#endif
381#define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
382#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
383#define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
384#define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
385#define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
386/* The join and leave membership option numbers need to match with the v4 ones */
387#define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
388#define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
389#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
390#if defined(_NETBSD_SOURCE)
391#define IPV6_PORTALGO 17 /* int; port selection algo (rfc6056) */
392#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
393#endif
394/* RFC2292 options */
395#ifdef _KERNEL
396#define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
397#define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
398#define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
399#define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
400#define IPV6_2292DSTOPTS 23 /* bool; destination option */
401#define IPV6_2292RTHDR 24 /* bool; routing header */
402#define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
403#endif
404#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
405#define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
406
407#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
408#define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
409
410/* new socket options introduced in RFC3542 */
411#define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
412
413#define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
414#define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
415#define IPV6_RECVRTHDR 38 /* bool; recv routing header */
416#define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
417#define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
418#ifdef _KERNEL
419#define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
420#endif
421#define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
422#define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
423#define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
424 4 bytes int; MTU notification (cmsg) */
425
426/* more new socket options introduced in RFC3542 */
427#define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
428#define IPV6_HOPLIMIT 47 /* int; send hop limit */
429#define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
430#define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
431#define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
432#define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
433
434#define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
435#ifdef _KERNEL
436#define IPV6_OTCLASS 58 /* u_int8_t; send traffic class value */
437#endif
438
439#define IPV6_TCLASS 61 /* int; send traffic class value */
440#define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
441#define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary address as
442 * the sorce address */
443/* to define items, should talk with KAME guys first, for *BSD compatibility */
444
445#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
446#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
447#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
448
449/*
450 * Defaults and limits for options
451 */
452#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
453#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
454
455/*
456 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
457 */
458struct ipv6_mreq {
459 struct in6_addr ipv6mr_multiaddr;
460 unsigned int ipv6mr_interface;
461};
462
463/*
464 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
465 */
466struct in6_pktinfo {
467 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
468 unsigned int ipi6_ifindex; /* send/recv interface index */
469};
470
471/*
472 * Control structure for IPV6_RECVPATHMTU socket option.
473 */
474struct ip6_mtuinfo {
475 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
476 uint32_t ip6m_mtu;
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#if defined(_NETBSD_SOURCE)
488/*
489 * Definitions for inet6 sysctl operations.
490 *
491 * Third level is protocol number.
492 * Fourth level is desired variable within that protocol.
493 */
494#define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
495
496#define CTL_IPV6PROTO_NAMES { \
497 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
498 { 0, 0 }, \
499 { "tcp6", CTLTYPE_NODE }, \
500 { 0, 0 }, \
501 { 0, 0 }, \
502 { 0, 0 }, \
503 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
504 { 0, 0 }, \
505 { 0, 0 }, \
506 { "udp6", CTLTYPE_NODE }, \
507 { 0, 0 }, \
508 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
513 { 0, 0 }, \
514 { "ip6", CTLTYPE_NODE }, \
515 { 0, 0 }, \
516 { 0, 0 }, \
517 { 0, 0 }, \
518 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
519 { 0, 0 }, \
520 { "ipsec6", CTLTYPE_NODE }, \
521 { 0, 0 }, \
522 { 0, 0 }, \
523 { 0, 0 }, \
524 { 0, 0 }, \
525 { 0, 0 }, \
526 { 0, 0 }, \
527 { "icmp6", CTLTYPE_NODE }, \
528 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
537 { 0, 0 }, \
538 { 0, 0 }, \
539 { 0, 0 }, \
540 { "pim6", CTLTYPE_NODE }, \
541}
542
543/*
544 * Names for IP sysctl objects
545 */
546#define IPV6CTL_FORWARDING 1 /* act as router */
547#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
548#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
549#ifdef notyet
550#define IPV6CTL_DEFMTU 4 /* default MTU */
551#endif
552#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
553#define IPV6CTL_STATS 6 /* stats */
554#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
555#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
556#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
557#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
558#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
559#define IPV6CTL_ACCEPT_RTADV 12
560#define IPV6CTL_KEEPFAITH 13
561#define IPV6CTL_LOG_INTERVAL 14
562#define IPV6CTL_HDRNESTLIMIT 15
563#define IPV6CTL_DAD_COUNT 16
564#define IPV6CTL_AUTO_FLOWLABEL 17
565#define IPV6CTL_DEFMCASTHLIM 18
566#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
567#define IPV6CTL_KAME_VERSION 20
568#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
569#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
570/* 23: reserved */
571#define IPV6CTL_V6ONLY 24
572/* 25 to 27: reserved */
573#define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */
574#define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */
575#define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */
576#define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */
577/* 32 to 34: reserved */
578#define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
579/* 36 to 37: reserved */
580#define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
581#define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */
582/* 40: reserved */
583#define IPV6CTL_MAXFRAGS 41 /* max fragments */
584#define IPV6CTL_IFQ 42 /* IPv6 packet input queue */
585#define IPV6CTL_RTADV_MAXROUTES 43 /* maximum number of routes */
586 /* via router advertisement */
587#define IPV6CTL_RTADV_NUMROUTES 44 /* current number of routes */
588 /* via router advertisement */
589/* New entries should be added here from current IPV6CTL_MAXID value. */
590/* to define items, should talk with KAME guys first, for *BSD compatibility */
591#define IPV6CTL_MAXID 45
592
593#define IPV6CTL_NAMES { \
594 { 0, 0 }, \
595 { "forwarding", CTLTYPE_INT }, \
596 { "redirect", CTLTYPE_INT }, \
597 { "hlim", CTLTYPE_INT }, \
598 { "mtu", CTLTYPE_INT }, \
599 { "forwsrcrt", CTLTYPE_INT }, \
600 { "stats", CTLTYPE_STRUCT }, \
601 { 0, 0 }, \
602 { "mrtproto", CTLTYPE_INT }, \
603 { "maxfragpackets", CTLTYPE_INT }, \
604 { "sourcecheck", CTLTYPE_INT }, \
605 { "sourcecheck_logint", CTLTYPE_INT }, \
606 { "accept_rtadv", CTLTYPE_INT }, \
607 { "keepfaith", CTLTYPE_INT }, \
608 { "log_interval", CTLTYPE_INT }, \
609 { "hdrnestlimit", CTLTYPE_INT }, \
610 { "dad_count", CTLTYPE_INT }, \
611 { "auto_flowlabel", CTLTYPE_INT }, \
612 { "defmcasthlim", CTLTYPE_INT }, \
613 { "gifhlim", CTLTYPE_INT }, \
614 { "kame_version", CTLTYPE_STRING }, \
615 { "use_deprecated", CTLTYPE_INT }, \
616 { "rr_prune", CTLTYPE_INT }, \
617 { 0, 0 }, \
618 { "v6only", CTLTYPE_INT }, \
619 { 0, 0 }, \
620 { 0, 0 }, \
621 { 0, 0 }, \
622 { "anonportmin", CTLTYPE_INT }, \
623 { "anonportmax", CTLTYPE_INT }, \
624 { "lowportmin", CTLTYPE_INT }, \
625 { "lowportmax", CTLTYPE_INT }, \
626 { 0, 0 }, \
627 { 0, 0 }, \
628 { 0, 0 }, \
629 { 0, 0 }, \
630 { 0, 0 }, \
631 { 0, 0 }, \
632 { 0, 0 }, \
633 { 0, 0 }, \
634 { 0, 0 }, \
635 { "maxfrags", CTLTYPE_INT }, \
636 { "ifq", CTLTYPE_NODE }, \
637 { "rtadv_maxroutes", CTLTYPE_INT }, \
638 { "rtadv_numroutes", CTLTYPE_INT }, \
639}
640
641#endif /* _NETBSD_SOURCE */
642
643#ifdef _KERNEL
644struct cmsghdr;
645
646/*
647 * in6_cksum_phdr:
648 *
649 * Compute significant parts of the IPv6 checksum pseudo-header
650 * for use in a delayed TCP/UDP checksum calculation.
651 *
652 * Args:
653 *
654 * src Source IPv6 address
655 * dst Destination IPv6 address
656 * len htonl(proto-hdr-len)
657 * nxt htonl(next-proto-number)
658 *
659 * NOTE: We expect the src and dst addresses to be 16-bit
660 * aligned!
661 */
662static __inline u_int16_t __unused
663in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst,
664 u_int32_t len, u_int32_t nxt)
665{
666 u_int32_t sum = 0;
667 const u_int16_t *w;
668
669 /*LINTED*/
670 w = (const u_int16_t *) src;
671 sum += w[0];
672 if (!IN6_IS_SCOPE_LINKLOCAL(src))
673 sum += w[1];
674 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
675 sum += w[6]; sum += w[7];
676
677 /*LINTED*/
678 w = (const u_int16_t *) dst;
679 sum += w[0];
680 if (!IN6_IS_SCOPE_LINKLOCAL(dst))
681 sum += w[1];
682 sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
683 sum += w[6]; sum += w[7];
684
685 sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/);
686
687 sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/);
688
689 sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/);
690
691 if (sum > 0xffff)
692 sum -= 0xffff;
693
694 return (sum);
695}
696
697struct mbuf;
698struct ifnet;
699int sockaddr_in6_cmp(const struct sockaddr *, const struct sockaddr *);
700struct sockaddr *sockaddr_in6_externalize(struct sockaddr *, socklen_t,
701 const struct sockaddr *);
702int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t);
703void in6_delayed_cksum(struct mbuf *);
704int in6_localaddr(const struct in6_addr *);
705int in6_addrscope(const struct in6_addr *);
706struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
707extern void in6_if_link_up(struct ifnet *);
708extern void in6_if_link_down(struct ifnet *);
709extern void in6_if_link_state_change(struct ifnet *, int);
710extern void in6_if_up(struct ifnet *);
711extern void in6_if_down(struct ifnet *);
712extern void addrsel_policy_init(void);
713extern u_char ip6_protox[];
714
715#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
716#define satocsin6(sa) ((const struct sockaddr_in6 *)(sa))
717#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
718#define sin6tocsa(sin6) ((const struct sockaddr *)(sin6))
719#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
720
721static inline void
722sockaddr_in6_init1(struct sockaddr_in6 *sin6, const struct in6_addr *addr,
723 in_port_t port, uint32_t flowinfo, uint32_t scope_id)
724{
725 sin6->sin6_port = port;
726 sin6->sin6_flowinfo = flowinfo;
727 sin6->sin6_addr = *addr;
728 sin6->sin6_scope_id = scope_id;
729}
730
731static inline void
732sockaddr_in6_init(struct sockaddr_in6 *sin6, const struct in6_addr *addr,
733 in_port_t port, uint32_t flowinfo, uint32_t scope_id)
734{
735 sin6->sin6_family = AF_INET6;
736 sin6->sin6_len = sizeof(*sin6);
737 sockaddr_in6_init1(sin6, addr, port, flowinfo, scope_id);
738}
739
740static inline struct sockaddr *
741sockaddr_in6_alloc(const struct in6_addr *addr, in_port_t port,
742 uint32_t flowinfo, uint32_t scope_id, int flags)
743{
744 struct sockaddr *sa;
745
746 if ((sa = sockaddr_alloc(AF_INET6, sizeof(struct sockaddr_in6),
747 flags)) == NULL)
748 return NULL;
749
750 sockaddr_in6_init1(satosin6(sa), addr, port, flowinfo, scope_id);
751
752 return sa;
753}
754#endif /* _KERNEL */
755
756#if defined(_NETBSD_SOURCE)
757
758#include <machine/ansi.h>
759
760#ifdef _BSD_SIZE_T_
761typedef _BSD_SIZE_T_ size_t;
762#define _SIZE_T
763#undef _BSD_SIZE_T_
764#endif
765
766#include <sys/cdefs.h>
767
768__BEGIN_DECLS
769struct cmsghdr;
770
771void in6_in_2_v4mapin6(const struct in_addr *, struct in6_addr *);
772void in6_sin6_2_sin(struct sockaddr_in *, struct sockaddr_in6 *);
773void in6_sin_2_v4mapsin6(const struct sockaddr_in *, struct sockaddr_in6 *);
774void in6_sin6_2_sin_in_sock(struct sockaddr *);
775void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **);
776
777#define INET6_IS_ADDR_LINKLOCAL 1
778#define INET6_IS_ADDR_MC_LINKLOCAL 2
779#define INET6_IS_ADDR_SITELOCAL 4
780void inet6_getscopeid(struct sockaddr_in6 *, int);
781void inet6_putscopeid(struct sockaddr_in6 *, int);
782
783extern int inet6_option_space(int);
784extern int inet6_option_init(void *, struct cmsghdr **, int);
785extern int inet6_option_append(struct cmsghdr *, const uint8_t *,
786 int, int);
787extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
788extern int inet6_option_next(const struct cmsghdr *, uint8_t **);
789extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int);
790
791extern size_t inet6_rthdr_space(int, int);
792extern struct cmsghdr *inet6_rthdr_init(void *, int);
793extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
794 unsigned int);
795extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
796#if 0 /* not implemented yet */
797extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
798#endif
799extern int inet6_rthdr_segments(const struct cmsghdr *);
800extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
801extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
802
803extern int inet6_opt_init(void *, socklen_t);
804extern int inet6_opt_append(void *, socklen_t, int, uint8_t,
805 socklen_t, uint8_t, void **);
806extern int inet6_opt_finish(void *, socklen_t, int);
807extern int inet6_opt_set_val(void *, int, void *, socklen_t);
808
809extern int inet6_opt_next(void *, socklen_t, int, uint8_t *,
810 socklen_t *, void **);
811extern int inet6_opt_find(void *, socklen_t, int, uint8_t,
812 socklen_t *, void **);
813extern int inet6_opt_get_val(void *, int, void *, socklen_t);
814extern socklen_t inet6_rth_space(int, int);
815extern void *inet6_rth_init(void *, socklen_t, int, int);
816extern int inet6_rth_add(void *, const struct in6_addr *);
817extern int inet6_rth_reverse(const void *, void *);
818extern int inet6_rth_segments(const void *);
819extern struct in6_addr *inet6_rth_getaddr(const void *, int);
820__END_DECLS
821#endif /* _NETBSD_SOURCE */
822
823#if defined(_KERNEL) || defined(_TEST)
824int in6_print(char *, size_t, const struct in6_addr *);
825#define IN6_PRINT(b, a) (in6_print((b), sizeof(b), (a)), (b))
826int sin6_print(char *, size_t, const void *);
827#endif
828
829#endif /* !_NETINET6_IN6_H_ */
830