1 /* $OpenBSD: in6.h,v 1.117 2024/04/21 17:32:11 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 */
81 struct 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 */
106 struct 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
130 extern const struct sockaddr_in6 sa6_any;
131
132 extern const struct in6_addr in6mask0;
133 extern const struct in6_addr in6mask32;
134 extern const struct in6_addr in6mask64;
135 extern const struct in6_addr in6mask96;
136 extern const struct in6_addr in6mask128;
137 #endif /* _KERNEL */
138
139 /* Both kernel and libc define these for use */
140 extern const struct in6_addr in6addr_any;
141 extern const struct in6_addr in6addr_loopback;
142 extern const struct in6_addr in6addr_intfacelocal_allnodes;
143 extern const struct in6_addr in6addr_linklocal_allnodes;
144 extern 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 */
357 struct 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 */
365 struct 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 */
375 struct 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_
392 typedef __socklen_t socklen_t; /* length type for network syscalls */
393 #endif
394
395 #endif /* __BSD_VISIBLE */
396
397 #ifdef _KERNEL
398 extern const u_char inet6ctlerrmap[];
399 extern const struct in6_addr zeroin6_addr;
400
401 struct mbuf;
402 struct sockaddr;
403 struct sockaddr_in6;
404 struct ifaddr;
405 struct in6_ifaddr;
406 struct ifnet;
407 struct rtentry;
408
409 void ipv6_input(struct ifnet *, struct mbuf *);
410 struct mbuf *
411 ipv6_check(struct ifnet *, struct mbuf *);
412
413 int in6_cksum(struct mbuf *, uint8_t, uint32_t, uint32_t);
414 void in6_proto_cksum_out(struct mbuf *, struct ifnet *);
415 int in6_localaddr(struct in6_addr *);
416 int in6_addrscope(struct in6_addr *);
417 struct in6_ifaddr *in6_ifawithscope(struct ifnet *, struct in6_addr *, u_int,
418 struct rtentry *);
419 int in6_mask2len(struct in6_addr *, u_char *);
420 int in6_nam2sin6(const struct mbuf *, struct sockaddr_in6 **);
421 int in6_sa2sin6(struct sockaddr *, struct sockaddr_in6 **);
422
423 struct ip6_pktopts;
424 struct ip6_moptions;
425
426 int in6_embedscope(struct in6_addr *, const struct sockaddr_in6 *,
427 const struct ip6_pktopts *, const struct ip6_moptions *);
428 void in6_recoverscope(struct sockaddr_in6 *, const struct in6_addr *);
429 void 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
437 static inline struct sockaddr_in6 *
satosin6(struct sockaddr * sa)438 satosin6(struct sockaddr *sa)
439 {
440 return ((struct sockaddr_in6 *)(sa));
441 }
442
443 static inline const struct sockaddr_in6 *
satosin6_const(const struct sockaddr * sa)444 satosin6_const(const struct sockaddr *sa)
445 {
446 return ((const struct sockaddr_in6 *)(sa));
447 }
448
449 static inline struct sockaddr *
sin6tosa(struct sockaddr_in6 * sin6)450 sin6tosa(struct sockaddr_in6 *sin6)
451 {
452 return ((struct sockaddr *)(sin6));
453 }
454
455 static inline const struct sockaddr *
sin6tosa_const(const struct sockaddr_in6 * sin6)456 sin6tosa_const(const struct sockaddr_in6 *sin6)
457 {
458 return ((const struct sockaddr *)(sin6));
459 }
460
461 static inline struct in6_ifaddr *
ifatoia6(struct ifaddr * ifa)462 ifatoia6(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 /* minimume 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 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
588 /* 24 to 40: reserved */
589 #define IPV6CTL_MAXFRAGS 41 /* max fragments */
590 #define IPV6CTL_MFORWARDING 42
591 #define IPV6CTL_MULTIPATH 43
592 #define IPV6CTL_MCAST_PMTU 44 /* path MTU discovery for multicast */
593 #define IPV6CTL_NEIGHBORGCTHRESH 45
594 #define IPV6CTL_MAXDYNROUTES 48
595 #define IPV6CTL_DAD_PENDING 49
596 #define IPV6CTL_MTUDISCTIMEOUT 50
597 #define IPV6CTL_IFQUEUE 51
598 #define IPV6CTL_MRTMIF 52
599 #define IPV6CTL_MRTMFC 53
600 #define IPV6CTL_SOIIKEY 54
601 #define IPV6CTL_MAXID 55
602
603 /* New entries should be added here from current IPV6CTL_MAXID value. */
604 /* to define items, should talk with KAME guys first, for *BSD compatibility */
605
606 #define IPV6CTL_NAMES { \
607 { 0, 0 }, \
608 { "forwarding", CTLTYPE_INT }, \
609 { "redirect", CTLTYPE_INT }, \
610 { "hlim", CTLTYPE_INT }, \
611 { 0, 0 }, \
612 { "forwsrcrt", CTLTYPE_INT }, \
613 { 0, 0 }, \
614 { 0, 0 }, \
615 { "mrtproto", CTLTYPE_INT }, \
616 { "maxfragpackets", CTLTYPE_INT }, \
617 { "sourcecheck", CTLTYPE_INT }, \
618 { "sourcecheck_logint", CTLTYPE_INT }, \
619 { 0, 0 }, \
620 { 0, 0 }, \
621 { "log_interval", CTLTYPE_INT }, \
622 { "hdrnestlimit", CTLTYPE_INT }, \
623 { "dad_count", CTLTYPE_INT }, \
624 { "auto_flowlabel", CTLTYPE_INT }, \
625 { "defmcasthlim", CTLTYPE_INT }, \
626 { 0, 0 }, \
627 { 0, 0 }, \
628 { "use_deprecated", CTLTYPE_INT }, \
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 { 0, 0 }, \
647 { 0, 0 }, \
648 { "maxfrags", CTLTYPE_INT }, \
649 { "mforwarding", CTLTYPE_INT }, \
650 { "multipath", CTLTYPE_INT }, \
651 { "multicast_mtudisc", CTLTYPE_INT }, \
652 { "neighborgcthresh", CTLTYPE_INT }, \
653 { 0, 0 }, \
654 { 0, 0 }, \
655 { "maxdynroutes", CTLTYPE_INT }, \
656 { "dad_pending", CTLTYPE_INT }, \
657 { "mtudisctimeout", CTLTYPE_INT }, \
658 { "ifq", CTLTYPE_NODE }, \
659 { "mrtmif", CTLTYPE_STRUCT }, \
660 { "mrtmfc", CTLTYPE_STRUCT }, \
661 { "soiikey", CTLTYPE_STRING }, /* binary string */ \
662 }
663
664 __BEGIN_DECLS
665 struct cmsghdr;
666
667 extern int inet6_opt_init(void *, socklen_t);
668 extern int inet6_opt_append(void *, socklen_t, int, u_int8_t,
669 socklen_t, u_int8_t, void **);
670 extern int inet6_opt_finish(void *, socklen_t, int);
671 extern int inet6_opt_set_val(void *, int, void *, socklen_t);
672
673 extern int inet6_opt_next(void *, socklen_t, int, u_int8_t *,
674 socklen_t *, void **);
675 extern int inet6_opt_find(void *, socklen_t, int, u_int8_t,
676 socklen_t *, void **);
677 extern int inet6_opt_get_val(void *, int, void *, socklen_t);
678
679 extern socklen_t inet6_rth_space(int, int);
680 extern void *inet6_rth_init(void *, socklen_t, int, int);
681 extern int inet6_rth_add(void *, const struct in6_addr *);
682 extern int inet6_rth_reverse(const void *, void *);
683 extern int inet6_rth_segments(const void *);
684 extern struct in6_addr *inet6_rth_getaddr(const void *, int);
685 __END_DECLS
686 #endif /* __BSD_VISIBLE */
687
688 #endif /* !_NETINET6_IN6_H_ */
689