FreeBSD kernel IPv6 code
in6.h
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1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $
32 */
33
34/*-
35 * Copyright (c) 1982, 1986, 1990, 1993
36 * The Regents of the University of California. All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 * SUCH DAMAGE.
61 *
62 * @(#)in.h 8.3 (Berkeley) 1/3/94
63 * $FreeBSD$
64 */
65
66#ifndef __KAME_NETINET_IN_H_INCLUDED_
67#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
68#endif
69
70#ifndef _NETINET6_IN6_H_
71#define _NETINET6_IN6_H_
72
73/*
74 * Identification of the network protocol stack
75 * for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
76 * has the table of implementation/integration differences.
77 */
78#define __KAME__
79#define __KAME_VERSION "FreeBSD"
80
81/*
82 * IPv6 port allocation rules should mirror the IPv4 rules and are controlled
83 * by the net.inet.ip.portrange sysctl tree. The following defines exist
84 * for compatibility with userland applications that need them.
85 */
86#if __BSD_VISIBLE
87#define IPV6PORT_RESERVED 1024
88#define IPV6PORT_ANONMIN 49152
89#define IPV6PORT_ANONMAX 65535
90#define IPV6PORT_RESERVEDMIN 600
91#define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
92#endif
93
94/*
95 * IPv6 address
96 */
97struct in6_addr {
98 union {
99 uint8_t __u6_addr8[16];
100 uint16_t __u6_addr16[8];
101 uint32_t __u6_addr32[4];
102 } __u6_addr; /* 128-bit IP6 address */
103};
104
105#define s6_addr __u6_addr.__u6_addr8
106#if defined(_KERNEL) || defined(_STANDALONE) /* XXX nonstandard */
107#define s6_addr8 __u6_addr.__u6_addr8
108#define s6_addr16 __u6_addr.__u6_addr16
109#define s6_addr32 __u6_addr.__u6_addr32
110#endif
111
112#define INET6_ADDRSTRLEN 46
113
114/*
115 * XXX missing POSIX.1-2001 macro IPPROTO_IPV6.
116 */
117
118/*
119 * Socket address for IPv6
120 */
121#if __BSD_VISIBLE
122#define SIN6_LEN
123#endif
124
125struct sockaddr_in6 {
126 uint8_t sin6_len; /* length of this struct */
127 sa_family_t sin6_family; /* AF_INET6 */
128 in_port_t sin6_port; /* Transport layer port # */
129 uint32_t sin6_flowinfo; /* IP6 flow information */
130 struct in6_addr sin6_addr; /* IP6 address */
131 uint32_t sin6_scope_id; /* scope zone index */
132};
133
134/*
135 * Local definition for masks
136 */
137#ifdef _KERNEL /* XXX nonstandard */
138#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
139#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
140 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
141#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
142 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
143#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
144 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
145#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
146 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
147#endif
148
149#ifdef _KERNEL
150extern const struct sockaddr_in6 sa6_any;
151
152extern const struct in6_addr in6mask0;
153extern const struct in6_addr in6mask32;
154extern const struct in6_addr in6mask64;
155extern const struct in6_addr in6mask96;
156extern const struct in6_addr in6mask128;
157#endif /* _KERNEL */
158
159/*
160 * Macros started with IPV6_ADDR is KAME local
161 */
162#ifdef _KERNEL /* XXX nonstandard */
163#if _BYTE_ORDER == _BIG_ENDIAN
164#define IPV6_ADDR_INT32_ONE 1
165#define IPV6_ADDR_INT32_TWO 2
166#define IPV6_ADDR_INT32_MNL 0xff010000
167#define IPV6_ADDR_INT32_MLL 0xff020000
168#define IPV6_ADDR_INT32_SMP 0x0000ffff
169#define IPV6_ADDR_INT16_ULL 0xfe80
170#define IPV6_ADDR_INT16_USL 0xfec0
171#define IPV6_ADDR_INT16_MLL 0xff02
172#elif _BYTE_ORDER == _LITTLE_ENDIAN
173#define IPV6_ADDR_INT32_ONE 0x01000000
174#define IPV6_ADDR_INT32_TWO 0x02000000
175#define IPV6_ADDR_INT32_MNL 0x000001ff
176#define IPV6_ADDR_INT32_MLL 0x000002ff
177#define IPV6_ADDR_INT32_SMP 0xffff0000
178#define IPV6_ADDR_INT16_ULL 0x80fe
179#define IPV6_ADDR_INT16_USL 0xc0fe
180#define IPV6_ADDR_INT16_MLL 0x02ff
181#endif
182#endif
183
184/*
185 * Definition of some useful macros to handle IP6 addresses
186 */
187#if __BSD_VISIBLE
188#define IN6ADDR_ANY_INIT \
189 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
190 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
191#define IN6ADDR_LOOPBACK_INIT \
192 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
193 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
194#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
195 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
196 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
197#define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
198 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
199 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
200#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
201 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
202 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
203#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
204 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
205 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
206#define IN6ADDR_LINKLOCAL_ALLV2ROUTERS_INIT \
207 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
208 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16 }}}
209#endif
210
211extern const struct in6_addr in6addr_any;
212extern const struct in6_addr in6addr_loopback;
213#if __BSD_VISIBLE
214extern const struct in6_addr in6addr_nodelocal_allnodes;
215extern const struct in6_addr in6addr_linklocal_allnodes;
216extern const struct in6_addr in6addr_linklocal_allrouters;
217extern const struct in6_addr in6addr_linklocal_allv2routers;
218#endif
219
220/*
221 * Equality
222 * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
223 * does not supply memcmp(). For userland memcmp() is preferred as it is
224 * in ANSI standard.
225 */
226#ifdef _KERNEL
227#define IN6_ARE_ADDR_EQUAL(a, b) \
228 (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
229#else
230#if __BSD_VISIBLE
231#define IN6_ARE_ADDR_EQUAL(a, b) \
232 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
233#endif
234#endif
235
236/*
237 * Unspecified
238 */
239#define IN6_IS_ADDR_UNSPECIFIED(a) \
240 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
241 (a)->__u6_addr.__u6_addr32[1] == 0 && \
242 (a)->__u6_addr.__u6_addr32[2] == 0 && \
243 (a)->__u6_addr.__u6_addr32[3] == 0)
244
245/*
246 * Loopback
247 */
248#define IN6_IS_ADDR_LOOPBACK(a) \
249 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
250 (a)->__u6_addr.__u6_addr32[1] == 0 && \
251 (a)->__u6_addr.__u6_addr32[2] == 0 && \
252 (a)->__u6_addr.__u6_addr32[3] == ntohl(1))
253
254/*
255 * IPv4 compatible
256 */
257#define IN6_IS_ADDR_V4COMPAT(a) \
258 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
259 (a)->__u6_addr.__u6_addr32[1] == 0 && \
260 (a)->__u6_addr.__u6_addr32[2] == 0 && \
261 (a)->__u6_addr.__u6_addr32[3] != 0 && \
262 (a)->__u6_addr.__u6_addr32[3] != ntohl(1))
263
264/*
265 * Mapped
266 */
267#define IN6_IS_ADDR_V4MAPPED(a) \
268 ((a)->__u6_addr.__u6_addr32[0] == 0 && \
269 (a)->__u6_addr.__u6_addr32[1] == 0 && \
270 (a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff))
271
272/*
273 * KAME Scope Values
274 */
275
276#ifdef _KERNEL /* XXX nonstandard */
277#define IPV6_ADDR_SCOPE_NODELOCAL 0x01
278#define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
279#define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
280#define IPV6_ADDR_SCOPE_SITELOCAL 0x05
281#define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
282#define IPV6_ADDR_SCOPE_GLOBAL 0x0e
283#else
284#define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
285#define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
286#define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
287#define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
288#define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
289#define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
290#endif
291
292/*
293 * Unicast Scope
294 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
295 */
296#define IN6_IS_ADDR_LINKLOCAL(a) \
297 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
298#define IN6_IS_ADDR_SITELOCAL(a) \
299 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
300
301/*
302 * Multicast
303 */
304#define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
305
306#ifdef _KERNEL /* XXX nonstandard */
307#define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
308#else
309#define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
310#endif
311
312/*
313 * Multicast Scope
314 */
315#ifdef _KERNEL /* refers nonstandard items */
316#define IN6_IS_ADDR_MC_NODELOCAL(a) \
317 (IN6_IS_ADDR_MULTICAST(a) && \
318 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
319#define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
320 (IN6_IS_ADDR_MULTICAST(a) && \
321 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
322#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
323 (IN6_IS_ADDR_MULTICAST(a) && \
324 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
325#define IN6_IS_ADDR_MC_SITELOCAL(a) \
326 (IN6_IS_ADDR_MULTICAST(a) && \
327 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
328#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
329 (IN6_IS_ADDR_MULTICAST(a) && \
330 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
331#define IN6_IS_ADDR_MC_GLOBAL(a) \
332 (IN6_IS_ADDR_MULTICAST(a) && \
333 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
334#else
335#define IN6_IS_ADDR_MC_NODELOCAL(a) \
336 (IN6_IS_ADDR_MULTICAST(a) && \
337 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
338#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
339 (IN6_IS_ADDR_MULTICAST(a) && \
340 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
341#define IN6_IS_ADDR_MC_SITELOCAL(a) \
342 (IN6_IS_ADDR_MULTICAST(a) && \
343 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
344#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
345 (IN6_IS_ADDR_MULTICAST(a) && \
346 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
347#define IN6_IS_ADDR_MC_GLOBAL(a) \
348 (IN6_IS_ADDR_MULTICAST(a) && \
349 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
350#endif
351
352#ifdef _KERNEL /* nonstandard */
353/*
354 * KAME Scope
355 */
356#define IN6_IS_SCOPE_LINKLOCAL(a) \
357 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
358 (IN6_IS_ADDR_MC_LINKLOCAL(a)))
359#define IN6_IS_SCOPE_EMBED(a) \
360 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
361 (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
362 (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
363
364#define IFA6_IS_DEPRECATED(a) \
365 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
366 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) > \
367 (a)->ia6_lifetime.ia6t_pltime)
368#define IFA6_IS_INVALID(a) \
369 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
370 (u_int32_t)((time_uptime - (a)->ia6_updatetime)) > \
371 (a)->ia6_lifetime.ia6t_vltime)
372#endif /* _KERNEL */
373
374/*
375 * IP6 route structure
376 */
377#if __BSD_VISIBLE
378struct nhop_object;
379struct route_in6 {
380 struct nhop_object *ro_nh;
381 struct llentry *ro_lle;
382 /*
383 * ro_prepend and ro_plen are only used for bpf to pass in a
384 * preformed header. They are not cacheable.
385 */
386 char *ro_prepend;
387 uint16_t ro_plen;
388 uint16_t ro_flags;
389 uint16_t ro_mtu; /* saved ro_rt mtu */
390 uint16_t spare;
391 struct sockaddr_in6 ro_dst;
392};
393#endif
394
395#ifdef _KERNEL
396#define MTAG_ABI_IPV6 1444287380 /* IPv6 ABI */
397#define IPV6_TAG_DIRECT 0 /* direct-dispatch IPv6 */
398#endif /* _KERNEL */
399
400/*
401 * Options for use with [gs]etsockopt at the IPV6 level.
402 * First word of comment is data type; bool is stored in int.
403 */
404/* no hdrincl */
405#if 0 /* the followings are relic in IPv4 and hence are disabled */
406#define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
407#define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
408#define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
409#define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
410#define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
411#endif
412#define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
413#define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
414#define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
415#define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
416#define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
417#define IPV6_JOIN_GROUP 12 /* ipv6_mreq; join a group membership */
418#define IPV6_LEAVE_GROUP 13 /* ipv6_mreq; leave a group membership */
419#define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
420#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
421/* RFC2292 options */
422#ifdef _KERNEL
423#define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
424#define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
425#define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
426#define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
427#define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
428#define IPV6_2292RTHDR 24 /* bool; routing header */
429#define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
430#endif
431
432#define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
433#define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
434#ifndef _KERNEL
435#define IPV6_BINDV6ONLY IPV6_V6ONLY
436#endif
437
438#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
439 /* 29; unused; was IPV6_FAITH */
440#if 1 /* IPV6FIREWALL */
441#define IPV6_FW_ADD 30 /* add a firewall rule to chain */
442#define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
443#define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
444#define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
445#define IPV6_FW_GET 34 /* get entire firewall rule chain */
446#endif
447
448/* new socket options introduced in RFC3542 */
449#define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
450
451#define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
452#define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
453#define IPV6_RECVRTHDR 38 /* bool; recv routing header */
454#define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
455#define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
456#ifdef _KERNEL
457#define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
458#endif
459
460#define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
461#define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
462
463#define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
464 4 bytes int; MTU notification (cmsg) */
465#if 0 /*obsoleted during 2292bis -> 3542*/
466#define IPV6_REACHCONF 45 /* no data; ND reachability confirm
467 (cmsg only/not in of RFC3542) */
468#endif
469
470/* more new socket options introduced in RFC3542 */
471#define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
472#define IPV6_HOPLIMIT 47 /* int; send hop limit */
473#define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
474#define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
475#define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
476#define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
477#if 0
478#define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options */
479 /* obsoleted by RFC3542 */
480#endif
481
482#define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
483
484#define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
485
486#define IPV6_TCLASS 61 /* int; send traffic class value */
487#define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
488
489#define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
490 * the source address.
491 */
492
493#define IPV6_BINDANY 64 /* bool: allow bind to any address */
494
495#define IPV6_BINDMULTI 65 /* bool; allow multibind to same addr/port */
496#define IPV6_RSS_LISTEN_BUCKET 66 /* int; set RSS listen bucket */
497#define IPV6_FLOWID 67 /* int; flowid of given socket */
498#define IPV6_FLOWTYPE 68 /* int; flowtype of given socket */
499#define IPV6_RSSBUCKETID 69 /* int; RSS bucket ID of given socket */
500#define IPV6_RECVFLOWID 70 /* bool; receive IP6 flowid/flowtype w/ datagram */
501#define IPV6_RECVRSSBUCKETID 71 /* bool; receive IP6 RSS bucket id w/ datagram */
502
503#define IPV6_ORIGDSTADDR 72 /* bool: allow getting dstaddr /port info */
504#define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR
505
506/*
507 * The following option is private; do not use it from user applications.
508 * It is deliberately defined to the same value as IP_MSFILTER.
509 */
510#define IPV6_MSFILTER 74 /* struct __msfilterreq;
511 * set/get multicast source filter list.
512 */
513
514/* The following option deals with the 802.1Q Ethernet Priority Code Point */
515#define IPV6_VLAN_PCP 75 /* int; set/get PCP used for packet, */
516 /* -1 use interface default */
517
518/* to define items, should talk with KAME guys first, for *BSD compatibility */
519
520#define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
521#define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
522#define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
523
524/*
525 * Defaults and limits for options
526 */
527#define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
528#define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
529
530/*
531 * Limit for IPv6 multicast memberships
532 */
533#define IPV6_MAX_MEMBERSHIPS 4095
534
535/*
536 * Default resource limits for IPv6 multicast source filtering.
537 * These may be modified by sysctl.
538 */
539#define IPV6_MAX_GROUP_SRC_FILTER 512 /* sources per group */
540#define IPV6_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */
541
542/*
543 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
544 */
545struct ipv6_mreq {
546 struct in6_addr ipv6mr_multiaddr;
547 unsigned int ipv6mr_interface;
548};
549
550/*
551 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
552 */
553struct in6_pktinfo {
554 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
555 unsigned int ipi6_ifindex; /* send/recv interface index */
556};
557
558/*
559 * Control structure for IPV6_RECVPATHMTU socket option.
560 */
561struct ip6_mtuinfo {
562 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
563 uint32_t ip6m_mtu;
564};
565
566/*
567 * Argument for IPV6_PORTRANGE:
568 * - which range to search when port is unspecified at bind() or connect()
569 */
570#define IPV6_PORTRANGE_DEFAULT 0 /* default range */
571#define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
572#define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
573
574#if __BSD_VISIBLE
575/*
576 * Definitions for inet6 sysctl operations.
577 *
578 * Third level is protocol number.
579 * Fourth level is desired variable within that protocol.
580 */
581#define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
582
583/*
584 * Names for IP sysctl objects
585 */
586#define IPV6CTL_FORWARDING 1 /* act as router */
587#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
588#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
589#ifdef notyet
590#define IPV6CTL_DEFMTU 4 /* default MTU */
591#endif
592#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
593#define IPV6CTL_STATS 6 /* stats */
594#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
595#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
596#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
597#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
598#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
599#define IPV6CTL_ACCEPT_RTADV 12
600 /* 13; unused; was: IPV6CTL_KEEPFAITH */
601#define IPV6CTL_LOG_INTERVAL 14
602#define IPV6CTL_HDRNESTLIMIT 15
603#define IPV6CTL_DAD_COUNT 16
604#define IPV6CTL_AUTO_FLOWLABEL 17
605#define IPV6CTL_DEFMCASTHLIM 18
606#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
607#define IPV6CTL_KAME_VERSION 20
608#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
609#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
610#if 0 /* obsolete */
611#define IPV6CTL_MAPPED_ADDR 23
612#endif
613#define IPV6CTL_V6ONLY 24
614/* IPV6CTL_RTEXPIRE 25 deprecated */
615/* IPV6CTL_RTMINEXPIRE 26 deprecated */
616/* IPV6CTL_RTMAXCACHE 27 deprecated */
617
618#define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
619#define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
620#define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
621#define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
622#define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
623#define IPV6CTL_PREFER_TEMPADDR 37 /* prefer temporary addr as src */
624#define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
625#define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */
626
627#define IPV6CTL_MAXFRAGS 41 /* max fragments */
628#if 0
629#define IPV6CTL_IFQ 42 /* ip6intrq node */
630#define IPV6CTL_ISATAPRTR 43 /* isatap router */
631#endif
632#define IPV6CTL_MCAST_PMTU 44 /* enable pMTU discovery for multicast? */
633
634/* New entries should be added here from current IPV6CTL_MAXID value. */
635/* to define items, should talk with KAME guys first, for *BSD compatibility */
636#define IPV6CTL_STEALTH 45
637
638#define ICMPV6CTL_ND6_ONLINKNSRFC4861 47
639#define IPV6CTL_NO_RADR 48 /* No defroute from RA */
640#define IPV6CTL_NORBIT_RAIF 49 /* Disable R-bit in NA on RA
641 * receiving IF. */
642#define IPV6CTL_RFC6204W3 50 /* Accept defroute even when forwarding
643 enabled */
644#define IPV6CTL_INTRQMAXLEN 51 /* max length of IPv6 netisr queue */
645#define IPV6CTL_INTRDQMAXLEN 52 /* max length of direct IPv6 netisr
646 * queue */
647#define IPV6CTL_MAXFRAGSPERPACKET 53 /* Max fragments per packet */
648#define IPV6CTL_MAXFRAGBUCKETSIZE 54 /* Max reassembly queues per bucket */
649#define IPV6CTL_MAXID 55
650#endif /* __BSD_VISIBLE */
651
652/*
653 * Since both netinet/ and netinet6/ call into netipsec/ and netpfil/,
654 * the protocol specific mbuf flags are shared between them.
655 */
656#define M_FASTFWD_OURS M_PROTO1 /* changed dst to local */
657#define M_IP6_NEXTHOP M_PROTO2 /* explicit ip nexthop */
658#define M_IP_NEXTHOP M_PROTO2 /* explicit ip nexthop */
659#define M_SKIP_FIREWALL M_PROTO3 /* skip firewall processing */
660#define M_AUTHIPHDR M_PROTO4
661#define M_DECRYPTED M_PROTO5
662#define M_LOOP M_PROTO6
663#define M_AUTHIPDGM M_PROTO7
664#define M_RTALERT_MLD M_PROTO8
665#define M_FRAGMENTED M_PROTO9 /* contained fragment header */
666
667#ifdef _KERNEL
668struct cmsghdr;
669struct ip6_hdr;
670
671int in6_cksum_pseudo(struct ip6_hdr *, uint32_t, uint8_t, uint16_t);
672int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t);
673int in6_cksum_partial(struct mbuf *, u_int8_t, u_int32_t, u_int32_t,
674 u_int32_t);
675int in6_localaddr(struct in6_addr *);
676int in6_localip(struct in6_addr *);
677bool in6_localip_fib(struct in6_addr *, uint16_t);
678int in6_ifhasaddr(struct ifnet *, struct in6_addr *);
679int in6_addrscope(const struct in6_addr *);
680char *ip6_sprintf(char *, const struct in6_addr *);
681struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
682extern void in6_if_up(struct ifnet *);
683struct sockaddr;
684extern u_char ip6_protox[];
685
686void in6_sin6_2_sin(struct sockaddr_in *sin,
687 struct sockaddr_in6 *sin6);
688void in6_sin_2_v4mapsin6(struct sockaddr_in *sin,
689 struct sockaddr_in6 *sin6);
690void in6_sin6_2_sin_in_sock(struct sockaddr *nam);
691void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam);
692extern void addrsel_policy_init(void);
693
694#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
695#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
696#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
697
698#endif /* _KERNEL */
699
700#ifndef _SIZE_T_DECLARED
701typedef __size_t size_t;
702#define _SIZE_T_DECLARED
703#endif
704
705#ifndef _SOCKLEN_T_DECLARED
706typedef __socklen_t socklen_t;
707#define _SOCKLEN_T_DECLARED
708#endif
709
710#if __BSD_VISIBLE
711
712__BEGIN_DECLS
713struct cmsghdr;
714
715extern int inet6_option_space(int);
716extern int inet6_option_init(void *, struct cmsghdr **, int);
717extern int inet6_option_append(struct cmsghdr *, const uint8_t *,
718 int, int);
719extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
720extern int inet6_option_next(const struct cmsghdr *, uint8_t **);
721extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int);
722
723extern size_t inet6_rthdr_space(int, int);
724extern struct cmsghdr *inet6_rthdr_init(void *, int);
725extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
726 unsigned int);
727extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
728#if 0 /* not implemented yet */
729extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
730#endif
731extern int inet6_rthdr_segments(const struct cmsghdr *);
732extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
733extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
734
735extern int inet6_opt_init(void *, socklen_t);
736extern int inet6_opt_append(void *, socklen_t, int, uint8_t, socklen_t,
737 uint8_t, void **);
738extern int inet6_opt_finish(void *, socklen_t, int);
739extern int inet6_opt_set_val(void *, int, void *, socklen_t);
740
741extern int inet6_opt_next(void *, socklen_t, int, uint8_t *, socklen_t *,
742 void **);
743extern int inet6_opt_find(void *, socklen_t, int, uint8_t, socklen_t *,
744 void **);
745extern int inet6_opt_get_val(void *, int, void *, socklen_t);
746extern socklen_t inet6_rth_space(int, int);
747extern void *inet6_rth_init(void *, socklen_t, int, int);
748extern int inet6_rth_add(void *, const struct in6_addr *);
749extern int inet6_rth_reverse(const void *, void *);
750extern int inet6_rth_segments(const void *);
751extern struct in6_addr *inet6_rth_getaddr(const void *, int);
752__END_DECLS
753
754#endif /* __BSD_VISIBLE */
755
756#endif /* !_NETINET6_IN6_H_ */
in6addr_linklocal_allrouters
const struct in6_addr in6addr_linklocal_allrouters
Definition: in6.c:138
in6addr_nodelocal_allnodes
const struct in6_addr in6addr_nodelocal_allnodes
Definition: in6.c:134
in6addr_linklocal_allv2routers
const struct in6_addr in6addr_linklocal_allv2routers
Definition: in6.c:140
in6addr_linklocal_allnodes
const struct in6_addr in6addr_linklocal_allnodes
Definition: in6.c:136
in6mask96
const struct in6_addr in6mask96
Definition: in6.c:146
in6_ifawithifp
struct in6_ifaddr * in6_ifawithifp(struct ifnet *, struct in6_addr *)
Definition: in6.c:1902
size_t
__size_t size_t
Definition: in6.h:696
in6mask128
const struct in6_addr in6mask128
Definition: in6.c:147
in6_cksum_pseudo
int in6_cksum_pseudo(struct ip6_hdr *, uint32_t, uint8_t, uint16_t)
Definition: in6_cksum.c:132
in6_ifhasaddr
int in6_ifhasaddr(struct ifnet *, struct in6_addr *)
Definition: in6.c:1781
in6mask32
const struct in6_addr in6mask32
Definition: in6.c:144
ip6_sprintf
char * ip6_sprintf(char *, const struct in6_addr *)
Definition: in6.c:1637
in6_sin_2_v4mapsin6
void in6_sin_2_v4mapsin6(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
Definition: in6.c:2576
in6_addrscope
int in6_addrscope(const struct in6_addr *)
Definition: scope6.c:235
in6addr_loopback
const struct in6_addr in6addr_loopback
Definition: in6.c:133
in6_if_up
void in6_if_up(struct ifnet *)
Definition: in6.c:1984
in6_sin6_2_sin
void in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
Definition: in6.c:2564
in6_sin_2_v4mapsin6_in_sock
void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam)
Definition: in6.c:2606
in6_cksum_partial
int in6_cksum_partial(struct mbuf *, u_int8_t, u_int32_t, u_int32_t, u_int32_t)
Definition: in6_cksum.c:153
in6mask0
const struct in6_addr in6mask0
Definition: in6.c:143
ip6_protox
u_char ip6_protox[]
Definition: ip6_input.c:129
in6mask64
const struct in6_addr in6mask64
Definition: in6.c:145
in6_localip
int in6_localip(struct in6_addr *)
Definition: in6.c:1740
socklen_t
__socklen_t socklen_t
Definition: in6.h:701
in6_localip_fib
bool in6_localip_fib(struct in6_addr *, uint16_t)
Definition: in6.c:1760
in6_cksum
int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t)
Definition: in6_cksum.c:364
in6_sin6_2_sin_in_sock
void in6_sin6_2_sin_in_sock(struct sockaddr *nam)
Definition: in6.c:2590
addrsel_policy_init
void addrsel_policy_init(void)
Definition: in6_src.c:924
sa6_any
const struct sockaddr_in6 sa6_any
Definition: in6.c:149
in6_localaddr
int in6_localaddr(struct in6_addr *)
Definition: in6.c:1714
in6addr_any
const struct in6_addr in6addr_any
Definition: in6.c:132
sin6
static struct sockaddr_in6 sin6
Definition: ip6_mroute.c:672
in6_addr
Definition: in6.h:97
in6_addr::__u6_addr
union in6_addr::@0 __u6_addr
in6_addr::__u6_addr32
uint32_t __u6_addr32[4]
Definition: in6.h:101
in6_addr::__u6_addr16
uint16_t __u6_addr16[8]
Definition: in6.h:100
in6_addr::__u6_addr8
uint8_t __u6_addr8[16]
Definition: in6.h:99
in6_ifaddr
Definition: in6_var.h:121
in6_pktinfo
Definition: in6.h:548
in6_pktinfo::ipi6_addr
struct in6_addr ipi6_addr
Definition: in6.h:549
in6_pktinfo::ipi6_ifindex
unsigned int ipi6_ifindex
Definition: in6.h:550
ip6_mtuinfo
Definition: in6.h:556
ip6_mtuinfo::ip6m_addr
struct sockaddr_in6 ip6m_addr
Definition: in6.h:557
ip6_mtuinfo::ip6m_mtu
uint32_t ip6m_mtu
Definition: in6.h:558
ipv6_mreq
Definition: in6.h:540
ipv6_mreq::ipv6mr_multiaddr
struct in6_addr ipv6mr_multiaddr
Definition: in6.h:541
ipv6_mreq::ipv6mr_interface
unsigned int ipv6mr_interface
Definition: in6.h:542
sockaddr_in6
Definition: in6.h:125
sockaddr_in6::sin6_len
uint8_t sin6_len
Definition: in6.h:126
sockaddr_in6::sin6_port
in_port_t sin6_port
Definition: in6.h:128
sockaddr_in6::sin6_addr
struct in6_addr sin6_addr
Definition: in6.h:130
sockaddr_in6::sin6_flowinfo
uint32_t sin6_flowinfo
Definition: in6.h:129
sockaddr_in6::sin6_scope_id
uint32_t sin6_scope_id
Definition: in6.h:131
sockaddr_in6::sin6_family
sa_family_t sin6_family
Definition: in6.h:127