1/* $OpenBSD: in6.h,v 1.125 2025/09/16 09:19:16 florian 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 __KAME_NETINET_IN_H_INCLUDED_
65#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
66#endif
67
68#ifndef _NETINET6_IN6_H_
69#define _NETINET6_IN6_H_
70
71/*
72 * Identification of the network protocol stack
73 * for *BSD-current/release: http://www.kame.net/dev/cvsweb2.cgi/kame/COVERAGE
74 * has the table of implementation/integration differences.
75 */
76#define __KAME__
77
78/*
79 * IPv6 address
80 */
81struct in6_addr {
82 union {
83 u_int8_t __u6_addr8[16];
84 u_int16_t __u6_addr16[8];
85 u_int32_t __u6_addr32[4];
86 } __u6_addr; /* 128-bit IP6 address */
87};
88
89#define s6_addr __u6_addr.__u6_addr8
90#ifdef _KERNEL /* XXX nonstandard */
91#define s6_addr8 __u6_addr.__u6_addr8
92#define s6_addr16 __u6_addr.__u6_addr16
93#define s6_addr32 __u6_addr.__u6_addr32
94#endif
95
96#ifndef INET6_ADDRSTRLEN
97#define INET6_ADDRSTRLEN 46
98#endif
99
100/*
101 * Socket address for IPv6
102 */
103#if __BSD_VISIBLE
104#define SIN6_LEN /* Indicates sockaddr_in6 has a sin6_len field */
105#endif /* __BSD_VISIBLE */
106struct sockaddr_in6 {
107 u_int8_t sin6_len; /* length of this struct(sa_family_t)*/
108 sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */
109 in_port_t sin6_port; /* Transport layer port # (in_port_t)*/
110 u_int32_t sin6_flowinfo; /* IP6 flow information */
111 struct in6_addr sin6_addr; /* IP6 address */
112 u_int32_t sin6_scope_id; /* intface scope id */
113};
114
115
116/*
117 * Local definition for masks
118 */
119#ifdef _KERNEL /* XXX nonstandard */
120#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
121#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
122 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
123#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
124 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
125#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
126 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
127#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
128 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
129
130extern const struct sockaddr_in6 sa6_any;
131
132extern const struct in6_addr in6mask0;
133extern const struct in6_addr in6mask32;
134extern const struct in6_addr in6mask64;
135extern const struct in6_addr in6mask96;
136extern const struct in6_addr in6mask128;
137#endif /* _KERNEL */
138
139/* Both kernel and libc define these for use */
140extern const struct in6_addr in6addr_any;
141extern const struct in6_addr in6addr_loopback;
142extern const struct in6_addr in6addr_intfacelocal_allnodes;
143extern const struct in6_addr in6addr_linklocal_allnodes;
144extern const struct in6_addr in6addr_linklocal_allrouters;
145
146#if __BSD_VISIBLE
147/*
148 * Definition of some useful macros to handle IP6 addresses
149 */
150#define IN6ADDR_ANY_INIT \
151 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
152 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
153#define IN6ADDR_LOOPBACK_INIT \
154 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
155 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
156#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
157 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
158 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
159#define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
160 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
161 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
162#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
163 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
164 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
165#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
166 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
167 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
168
169#define IN6_ARE_ADDR_EQUAL(a, b) \
170 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
171
172#endif /* __BSD_VISIBLE */
173
174/*
175 * Macros started with IPV6_ADDR is KAME local
176 */
177#define __IPV6_ADDR_INT32_ONE htonl(1)
178#define __IPV6_ADDR_INT32_TWO htonl(2)
179#define __IPV6_ADDR_INT32_MNL htonl(0xff010000)
180#define __IPV6_ADDR_INT32_MLL htonl(0xff020000)
181#define __IPV6_ADDR_INT32_SMP htonl(0x0000ffff)
182#define __IPV6_ADDR_INT16_ULL htons(0xfe80)
183#define __IPV6_ADDR_INT16_USL htons(0xfec0)
184#define __IPV6_ADDR_INT16_MLL htons(0xff02)
185
186/*
187 * Unspecified
188 */
189#define IN6_IS_ADDR_UNSPECIFIED(a) \
190 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
191 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
192 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
193 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
194
195/*
196 * Loopback
197 */
198#define IN6_IS_ADDR_LOOPBACK(a) \
199 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
200 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
201 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
202 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == __IPV6_ADDR_INT32_ONE))
203
204/*
205 * IPv4 compatible
206 */
207#define IN6_IS_ADDR_V4COMPAT(a) \
208 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
209 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
210 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
211 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
212 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != __IPV6_ADDR_INT32_ONE))
213
214/*
215 * Mapped
216 */
217#define IN6_IS_ADDR_V4MAPPED(a) \
218 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
219 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
220 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == __IPV6_ADDR_INT32_SMP))
221
222/*
223 * Unicast Scope
224 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
225 */
226#define IN6_IS_ADDR_LINKLOCAL(a) \
227 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
228#define IN6_IS_ADDR_SITELOCAL(a) \
229 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
230
231/*
232 * Multicast
233 */
234#define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
235#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
236
237#define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
238#define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
239#define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
240#define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
241#define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
242#define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
243
244#define IN6_IS_ADDR_MC_NODELOCAL(a) \
245 (IN6_IS_ADDR_MULTICAST(a) && \
246 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
247#define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
248 (IN6_IS_ADDR_MULTICAST(a) && \
249 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_INTFACELOCAL))
250#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
251 (IN6_IS_ADDR_MULTICAST(a) && \
252 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
253#define IN6_IS_ADDR_MC_SITELOCAL(a) \
254 (IN6_IS_ADDR_MULTICAST(a) && \
255 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
256#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
257 (IN6_IS_ADDR_MULTICAST(a) && \
258 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
259#define IN6_IS_ADDR_MC_GLOBAL(a) \
260 (IN6_IS_ADDR_MULTICAST(a) && \
261 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
262
263#ifdef _KERNEL
264#define IN6_IS_SCOPE_LINKLOCAL(a) \
265 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
266 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
267#define IN6_IS_SCOPE_EMBED(a) \
268 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
269 (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
270 (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
271
272#define IFA6_IS_DEPRECATED(a) \
273 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
274 (u_int32_t)((getuptime() - (a)->ia6_updatetime)) > \
275 (a)->ia6_lifetime.ia6t_pltime)
276#define IFA6_IS_INVALID(a) \
277 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
278 (u_int32_t)((getuptime() - (a)->ia6_updatetime)) > \
279 (a)->ia6_lifetime.ia6t_vltime)
280
281#endif /* _KERNEL */
282
283/*
284 * Options for use with [gs]etsockopt at the IPV6 level.
285 * First word of comment is data type; bool is stored in int.
286 */
287#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
288#define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
289#define IPV6_MULTICAST_HOPS 10 /* u_int; set/get IP6 multicast hops */
290#define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
291#define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
292#define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
293#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
294#if __BSD_VISIBLE
295#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
296#endif
297
298#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
299#define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
300
301/* new socket options introduced in RFC3542 */
302#define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
303
304#define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
305#define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
306#define IPV6_RECVRTHDR 38 /* bool; recv routing header */
307#define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
308#define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
309
310#define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
311#define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
312
313#define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
314 4 bytes int; MTU notification (cmsg) */
315
316/* More new socket options introduced in RFC3542 */
317#define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
318#define IPV6_HOPLIMIT 47 /* int; send hop limit */
319#define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
320#define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
321#define IPV6_DSTOPTS 50 /* ip6_dest; send dst option before rthdr */
322#define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
323
324#define IPV6_AUTH_LEVEL 53 /* int; authentication used */
325#define IPV6_ESP_TRANS_LEVEL 54 /* int; transport encryption */
326#define IPV6_ESP_NETWORK_LEVEL 55 /* int; full-packet encryption */
327#if __BSD_VISIBLE
328#define IPSEC6_OUTSA 56 /* set the outbound SA for a socket */
329#endif
330#define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
331
332#define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
333#define IPV6_IPCOMP_LEVEL 60 /* int; compression */
334
335#define IPV6_TCLASS 61 /* int; send traffic class value */
336#define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
337#define IPV6_PIPEX 63 /* bool; using PIPEX */
338
339#define IPV6_RECVDSTPORT 64 /* bool; receive IP dst port w/dgram */
340#define IPV6_MINHOPCOUNT 65 /* int; minimum recv hop limit */
341
342#define IPV6_RTABLE 0x1021 /* int; routing table, see SO_RTABLE */
343
344/* to define items, should talk with KAME guys first, for *BSD compatibility */
345#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor */
346#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
347
348/*
349 * Defaults and limits for options
350 */
351#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
352#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
353
354/*
355 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
356 */
357struct ipv6_mreq {
358 struct in6_addr ipv6mr_multiaddr;
359 unsigned int ipv6mr_interface;
360};
361
362/*
363 * IPV6_PKTINFO: Packet information(RFC3542 sec 6)
364 */
365struct in6_pktinfo {
366 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
367 unsigned int ipi6_ifindex; /* send/recv interface index */
368};
369
370/*
371 * Control structure for IPV6_RECVPATHMTU socket option.
372 * XXX Not allowed here by POSIX, but required by RFC 3542, so go
373 * XXX with the code on the pavement.
374 */
375struct ip6_mtuinfo {
376 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
377 u_int32_t ip6m_mtu;
378};
379
380/*
381 * Argument for IPV6_PORTRANGE:
382 * - which range to search when port is unspecified at bind() or connect()
383 */
384#define IPV6_PORTRANGE_DEFAULT 0 /* default range */
385#define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
386#define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
387
388#ifdef __BSD_VISIBLE
389
390#ifndef _SOCKLEN_T_DEFINED_
391#define _SOCKLEN_T_DEFINED_
392typedef __socklen_t socklen_t; /* length type for network syscalls */
393#endif
394
395#endif /* __BSD_VISIBLE */
396
397#ifdef _KERNEL
398extern const u_char inet6ctlerrmap[];
399extern const struct in6_addr zeroin6_addr;
400
401struct mbuf;
402struct sockaddr;
403struct sockaddr_in6;
404struct ifaddr;
405struct in6_ifaddr;
406struct ifnet;
407struct rtentry;
408struct netstack;
409
410void ipv6_input(struct ifnet *, struct mbuf *, struct netstack *);
411struct mbuf *
412 ipv6_check(struct ifnet *, struct mbuf *);
413
414int in6_cksum(struct mbuf *, uint8_t, uint32_t, uint32_t);
415void in6_proto_cksum_out(struct mbuf *, struct ifnet *);
416int in6_addrscope(const struct in6_addr *);
417struct in6_ifaddr *in6_ifawithscope(struct ifnet *, const struct in6_addr *,
418 u_int, struct rtentry *);
419int in6_mask2len(struct in6_addr *, u_char *);
420int in6_nam2sin6(const struct mbuf *, struct sockaddr_in6 **);
421int in6_sa2sin6(struct sockaddr *, struct sockaddr_in6 **);
422
423struct ip6_pktopts;
424struct ip6_moptions;
425
426int in6_embedscope(struct in6_addr *, const struct sockaddr_in6 *,
427 const struct ip6_pktopts *, const struct ip6_moptions *);
428void in6_recoverscope(struct sockaddr_in6 *, const struct in6_addr *);
429void in6_clearscope(struct in6_addr *);
430
431/*
432 * Convert between address family specific and general structs.
433 * Inline functions check the source type and are stricter than
434 * casts or defines.
435 */
436
437static inline struct sockaddr_in6 *
438satosin6(struct sockaddr *sa)
439{
440 return ((struct sockaddr_in6 *)(sa));
441}
442
443static inline const struct sockaddr_in6 *
444satosin6_const(const struct sockaddr *sa)
445{
446 return ((const struct sockaddr_in6 *)(sa));
447}
448
449static inline struct sockaddr *
450sin6tosa(struct sockaddr_in6 *sin6)
451{
452 return ((struct sockaddr *)(sin6));
453}
454
455static inline const struct sockaddr *
456sin6tosa_const(const struct sockaddr_in6 *sin6)
457{
458 return ((const struct sockaddr *)(sin6));
459}
460
461static inline struct in6_ifaddr *
462ifatoia6(struct ifaddr *ifa)
463{
464 return ((struct in6_ifaddr *)(ifa));
465}
466
467#endif /* _KERNEL */
468
469#if __BSD_VISIBLE
470/*
471 * Definitions for inet6 sysctl operations.
472 *
473 * Third level is protocol number.
474 * Fourth level is desired variable within that protocol.
475 */
476#define IPV6PROTO_MAXID (IPPROTO_DIVERT + 1) /* don't list to IPV6PROTO_MAX */
477
478#define CTL_IPV6PROTO_NAMES { \
479 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
480 { 0, 0 }, \
481 { "tcp6", CTLTYPE_NODE }, \
482 { 0, 0 }, \
483 { 0, 0 }, \
484 { 0, 0 }, \
485 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
486 { 0, 0 }, \
487 { 0, 0 }, \
488 { "udp6", CTLTYPE_NODE }, \
489 { 0, 0 }, \
490 { 0, 0 }, \
491 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
492 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
493 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
494 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
495 { 0, 0 }, \
496 { "ip6", CTLTYPE_NODE }, \
497 { 0, 0 }, \
498 { 0, 0 }, \
499 { 0, 0 }, \
500 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
501 { 0, 0 }, \
502 { "ipsec6", CTLTYPE_NODE }, \
503 { 0, 0 }, \
504 { 0, 0 }, \
505 { 0, 0 }, \
506 { 0, 0 }, \
507 { 0, 0 }, \
508 { 0, 0 }, \
509 { "icmp6", CTLTYPE_NODE }, \
510 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
514 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
515 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
516 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
517 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
518 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
519 { 0, 0 }, \
520 { 0, 0 }, \
521 { 0, 0 }, \
522 { 0, 0 }, \
523 { 0, 0 }, \
524 { 0, 0 }, \
525 { 0, 0 }, \
526 { 0, 0 }, \
527 { 0, 0 }, \
528 { 0, 0 }, \
529/*110*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
530 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
531/*120*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
532 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
533/*130*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
534 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
535/*140*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
536 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
537/*150*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
538 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
539/*160*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
540 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
541/*170*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
542 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
543/*180*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
544 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
545/*190*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
546 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
547/*200*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
548 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
549/*210*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
550 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
551/*220*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
552 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
553/*230*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
554 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
555/*240*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
556 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
557/*250*/ { 0, 0 }, \
558 { 0, 0 }, \
559 { 0, 0 }, \
560 { 0, 0 }, \
561 { 0, 0 }, \
562 { 0, 0 }, \
563 { 0, 0 }, \
564 { 0, 0 }, \
565 { "divert", CTLTYPE_NODE }, \
566}
567
568/*
569 * Names for IP sysctl objects
570 */
571#define IPV6CTL_FORWARDING 1 /* act as router */
572#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
573#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
574#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
575#define IPV6CTL_STATS 6 /* stats */
576#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
577#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
578#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
579#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
580#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimum logging interval */
581#define IPV6CTL_ACCEPT_RTADV 12
582#define IPV6CTL_LOG_INTERVAL 14
583#define IPV6CTL_HDRNESTLIMIT 15
584#define IPV6CTL_DAD_COUNT 16
585#define IPV6CTL_AUTO_FLOWLABEL 17
586#define IPV6CTL_DEFMCASTHLIM 18
587/* 24 to 40: reserved */
588#define IPV6CTL_MAXFRAGS 41 /* max fragments */
589#define IPV6CTL_MFORWARDING 42
590#define IPV6CTL_MULTIPATH 43
591#define IPV6CTL_MCAST_PMTU 44 /* path MTU discovery for multicast */
592#define IPV6CTL_NEIGHBORGCTHRESH 45
593#define IPV6CTL_MAXDYNROUTES 48
594#define IPV6CTL_DAD_PENDING 49
595#define IPV6CTL_MTUDISCTIMEOUT 50
596#define IPV6CTL_IFQUEUE 51
597#define IPV6CTL_MRTMIF 52
598#define IPV6CTL_MRTMFC 53
599#define IPV6CTL_MAXID 54
600
601/* New entries should be added here from current IPV6CTL_MAXID value. */
602/* to define items, should talk with KAME guys first, for *BSD compatibility */
603
604#define IPV6CTL_NAMES { \
605 { 0, 0 }, \
606 { "forwarding", CTLTYPE_INT }, \
607 { "redirect", CTLTYPE_INT }, \
608 { "hlim", CTLTYPE_INT }, \
609 { 0, 0 }, \
610 { "forwsrcrt", CTLTYPE_INT }, \
611 { 0, 0 }, \
612 { 0, 0 }, \
613 { "mrtproto", CTLTYPE_INT }, \
614 { "maxfragpackets", CTLTYPE_INT }, \
615 { "sourcecheck", CTLTYPE_INT }, \
616 { "sourcecheck_logint", CTLTYPE_INT }, \
617 { 0, 0 }, \
618 { 0, 0 }, \
619 { 0, 0 }, \
620 { "hdrnestlimit", CTLTYPE_INT }, \
621 { "dad_count", CTLTYPE_INT }, \
622 { 0, 0 }, \
623 { "defmcasthlim", CTLTYPE_INT }, \
624 { 0, 0 }, \
625 { 0, 0 }, \
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 { 0, 0 }, \
636 { 0, 0 }, \
637 { 0, 0 }, \
638 { 0, 0 }, \
639 { 0, 0 }, \
640 { 0, 0 }, \
641 { 0, 0 }, \
642 { 0, 0 }, \
643 { 0, 0 }, \
644 { 0, 0 }, \
645 { 0, 0 }, \
646 { "maxfrags", CTLTYPE_INT }, \
647 { "mforwarding", CTLTYPE_INT }, \
648 { "multipath", CTLTYPE_INT }, \
649 { "multicast_mtudisc", CTLTYPE_INT }, \
650 { "neighborgcthresh", CTLTYPE_INT }, \
651 { 0, 0 }, \
652 { 0, 0 }, \
653 { "maxdynroutes", CTLTYPE_INT }, \
654 { "dad_pending", CTLTYPE_INT }, \
655 { "mtudisctimeout", CTLTYPE_INT }, \
656 { "ifq", CTLTYPE_NODE }, \
657 { "mrtmif", CTLTYPE_STRUCT }, \
658 { "mrtmfc", CTLTYPE_STRUCT }, \
659}
660
661__BEGIN_DECLS
662struct cmsghdr;
663
664extern int inet6_opt_init(void *, socklen_t);
665extern int inet6_opt_append(void *, socklen_t, int, u_int8_t,
666 socklen_t, u_int8_t, void **);
667extern int inet6_opt_finish(void *, socklen_t, int);
668extern int inet6_opt_set_val(void *, int, void *, socklen_t);
669
670extern int inet6_opt_next(void *, socklen_t, int, u_int8_t *,
671 socklen_t *, void **);
672extern int inet6_opt_find(void *, socklen_t, int, u_int8_t,
673 socklen_t *, void **);
674extern int inet6_opt_get_val(void *, int, void *, socklen_t);
675
676extern socklen_t inet6_rth_space(int, int);
677extern void *inet6_rth_init(void *, socklen_t, int, int);
678extern int inet6_rth_add(void *, const struct in6_addr *);
679extern int inet6_rth_reverse(const void *, void *);
680extern int inet6_rth_segments(const void *);
681extern struct in6_addr *inet6_rth_getaddr(const void *, int);
682__END_DECLS
683#endif /* __BSD_VISIBLE */
684
685#endif /* !_NETINET6_IN6_H_ */