1 /* $FreeBSD: src/sys/netinet6/in6.h,v 1.7.2.7 2002/08/01 19:38:50 ume Exp $ */
2 /* $KAME: in6.h,v 1.89 2001/05/27 13:28:35 itojun Exp $ */
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
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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.
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
34 * Copyright (c) 1982, 1986, 1990, 1993
35 * The Regents of the University of California. All rights reserved.
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38 * modification, are permitted provided that the following conditions
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
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47 * This product includes software developed by the University of
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49 * 4. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
65 * @(#)in.h 8.3 (Berkeley) 1/3/94
68 #ifndef __KAME_NETINET_IN_H_INCLUDED_
69 #error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
72 #ifndef _NETINET6_IN6_H_
73 #define _NETINET6_IN6_H_
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.
81 #define __KAME_VERSION "20010528/FreeBSD"
83 #ifndef _SOCKLEN_T_DECLARED
84 #define _SOCKLEN_T_DECLARED
85 typedef __socklen_t socklen_t;
89 * Local port number conventions:
91 * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
92 * unless a kernel is compiled with IPNOPRIVPORTS defined.
94 * When a user does a bind(2) or connect(2) with a port number of zero,
95 * a non-conflicting local port address is chosen.
97 * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
98 * that is settable by sysctl(3); net.inet.ip.anonportmin and
99 * net.inet.ip.anonportmax respectively.
101 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
102 * default assignment range.
104 * The value IP_PORTRANGE_DEFAULT causes the default behavior.
106 * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
107 * and exists only for FreeBSD compatibility purposes.
109 * The value IP_PORTRANGE_LOW changes the range to the "low" are
110 * that is (by convention) restricted to privileged processes.
111 * This convention is based on "vouchsafe" principles only.
112 * It is only secure if you trust the remote host to restrict these ports.
113 * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
116 #define IPV6PORT_RESERVED 1024
117 #define IPV6PORT_ANONMIN 49152
118 #define IPV6PORT_ANONMAX 65535
119 #define IPV6PORT_RESERVEDMIN 600
120 #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
125 #ifndef _STRUCT_IN6_ADDR_DECLARED
128 uint8_t __u6_addr8[16];
129 uint16_t __u6_addr16[8];
130 uint32_t __u6_addr32[4];
131 } __u6_addr; /* 128-bit IP6 address */
133 #define _STRUCT_IN6_ADDR_DECLARED
136 #define s6_addr __u6_addr.__u6_addr8
137 #define _s6_addr16 __u6_addr.__u6_addr16 /* internal use */
138 #define _s6_addr32 __u6_addr.__u6_addr32 /* internal use */
139 #if __BSD_VISIBLE /* XXX nonstandard */
140 #define s6_addr8 __u6_addr.__u6_addr8
141 #define s6_addr16 __u6_addr.__u6_addr16
142 #define s6_addr32 __u6_addr.__u6_addr32
145 #define INET6_ADDRSTRLEN 46
148 * Socket address for IPv6
150 #ifndef _XOPEN_SOURCE
153 struct sockaddr_in6 {
154 uint8_t sin6_len; /* length of this struct(sa_family_t)*/
155 sa_family_t sin6_family; /* AF_INET6 */
156 uint16_t sin6_port; /* Transport layer port # (in_port_t)*/
157 uint32_t sin6_flowinfo; /* IP6 flow information */
158 struct in6_addr sin6_addr; /* IP6 address */
159 uint32_t sin6_scope_id; /* scope zone index */
163 * Local definition for masks
165 #ifdef _KERNEL /* XXX nonstandard */
166 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
167 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
168 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
169 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
170 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
171 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
172 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
173 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
174 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
178 extern const struct sockaddr_in6 sa6_any;
180 extern const struct in6_addr in6mask0;
181 extern const struct in6_addr in6mask32;
182 extern const struct in6_addr in6mask64;
183 extern const struct in6_addr in6mask96;
184 extern const struct in6_addr in6mask128;
188 * Macros started with IPV6_ADDR is KAME local
190 #if BYTE_ORDER == BIG_ENDIAN
191 #define _IPV6_ADDR_INT16_UL_MASK 0xffc0
192 #define _IPV6_ADDR_INT16_ULL 0xfe80
193 #define _IPV6_ADDR_INT16_USL 0xfec0
195 #define _IPV6_ADDR_INT16_UL_MASK 0xc0ff
196 #define _IPV6_ADDR_INT16_ULL 0x80fe
197 #define _IPV6_ADDR_INT16_USL 0xc0fe
200 #ifdef _KERNEL /* XXX nonstandard */
201 #if BYTE_ORDER == BIG_ENDIAN
202 #define IPV6_ADDR_INT32_ONE 1
203 #define IPV6_ADDR_INT32_TWO 2
204 #define IPV6_ADDR_INT32_MNL 0xff010000
205 #define IPV6_ADDR_INT32_MLL 0xff020000
206 #define IPV6_ADDR_INT32_SMP 0x0000ffff
207 #define IPV6_ADDR_INT16_MLL 0xff02
208 #elif BYTE_ORDER == LITTLE_ENDIAN
209 #define IPV6_ADDR_INT32_ONE 0x01000000
210 #define IPV6_ADDR_INT32_TWO 0x02000000
211 #define IPV6_ADDR_INT32_MNL 0x000001ff
212 #define IPV6_ADDR_INT32_MLL 0x000002ff
213 #define IPV6_ADDR_INT32_SMP 0xffff0000
214 #define IPV6_ADDR_INT16_MLL 0x02ff
216 #define IPV6_ADDR_INT16_ULL _IPV6_ADDR_INT16_ULL
217 #define IPV6_ADDR_INT16_USL _IPV6_ADDR_INT16_USL
221 * Definition of some useful macros to handle IP6 addresses
223 #define IN6ADDR_ANY_INIT \
224 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
225 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
226 #define IN6ADDR_LOOPBACK_INIT \
227 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
228 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
229 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
230 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
231 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
232 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
233 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
234 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
235 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
236 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
237 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
240 extern const struct in6_addr kin6addr_any;
241 extern const struct in6_addr kin6addr_loopback;
242 extern const struct in6_addr kin6addr_nodelocal_allnodes;
243 extern const struct in6_addr kin6addr_linklocal_allnodes;
244 extern const struct in6_addr kin6addr_linklocal_allrouters;
246 extern const struct in6_addr in6addr_any;
247 extern const struct in6_addr in6addr_loopback;
248 extern const struct in6_addr in6addr_nodelocal_allnodes;
249 extern const struct in6_addr in6addr_linklocal_allnodes;
252 #define IN6_ARE_ADDR_EQUAL(a, b) \
253 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
255 #ifdef _KERNEL /* non standard */
256 /* see if two addresses are equal in a scope-conscious manner. */
257 #define SA6_ARE_ADDR_EQUAL(a, b) \
258 (((a)->sin6_scope_id == 0 || (b)->sin6_scope_id == 0 || \
259 (a)->sin6_scope_id == (b)->sin6_scope_id) && \
260 (bcmp(&(a)->sin6_addr, &(b)->sin6_addr, sizeof(struct in6_addr)) == 0))
266 #define IN6_IS_ADDR_UNSPECIFIED(a) \
267 ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 && \
268 (a)->_s6_addr32[2] == 0 && (a)->_s6_addr32[3] == 0)
273 #define IN6_IS_ADDR_LOOPBACK(a) \
274 ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 && \
275 (a)->_s6_addr32[2] == 0 && (a)->_s6_addr32[3] == ntohl(1))
280 #define IN6_IS_ADDR_V4MAPPED(a) \
281 ((a)->_s6_addr32[0] == 0 && (a)->_s6_addr32[1] == 0 && \
282 (a)->_s6_addr32[2] == ntohl(0x0000ffff))
285 * IPv4 compatible. Deprecated by RFC4291.
287 #define IN6_IS_ADDR_V4COMPAT(a) \
288 ((a)->_s6_addr32[0] == 0 && \
289 (a)->_s6_addr32[1] == 0 && \
290 (a)->_s6_addr32[2] == 0 && \
291 (a)->_s6_addr32[3] != 0 && (a)->_s6_addr32[3] != ntohl(1))
297 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
298 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
299 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
300 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
301 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
303 #ifdef _KERNEL /* XXX nonstandard */
304 #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
305 #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
306 #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
307 #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
308 #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
309 #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
314 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
316 #define IN6_IS_ADDR_LINKLOCAL(a) \
317 (((a)->_s6_addr16[0] & _IPV6_ADDR_INT16_UL_MASK) == _IPV6_ADDR_INT16_ULL)
318 #define IN6_IS_ADDR_SITELOCAL(a) \
319 (((a)->_s6_addr16[0] & _IPV6_ADDR_INT16_UL_MASK) == _IPV6_ADDR_INT16_USL)
324 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
325 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
326 #ifdef _KERNEL /* XXX nonstandard */
327 #define IPV6_ADDR_MC_SCOPE(a) __IPV6_ADDR_MC_SCOPE(a)
333 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
334 (IN6_IS_ADDR_MULTICAST(a) && \
335 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
337 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
338 (IN6_IS_ADDR_MULTICAST(a) && \
339 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
341 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
342 (IN6_IS_ADDR_MULTICAST(a) && \
343 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
345 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
346 (IN6_IS_ADDR_MULTICAST(a) && \
347 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
349 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
350 (IN6_IS_ADDR_MULTICAST(a) && \
351 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
353 #define IN6_IS_ADDR_MC_GLOBAL(a) \
354 (IN6_IS_ADDR_MULTICAST(a) && \
355 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
357 #ifdef _KERNEL /* nonstandard */
361 #define IN6_IS_SCOPE_LINKLOCAL(a) \
362 (IN6_IS_ADDR_LINKLOCAL(a) || IN6_IS_ADDR_MC_LINKLOCAL(a))
363 #define IN6_IS_SCOPE_EMBED(a) \
364 ((IN6_IS_ADDR_LINKLOCAL(a)) || \
365 (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
366 (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
369 #define IFA6_IS_DEPRECATED(a) \
370 ((a)->ia6_lifetime.ia6t_preferred != 0 && \
371 (a)->ia6_lifetime.ia6t_preferred < time_uptime)
373 #define IFA6_IS_INVALID(a) \
374 ((a)->ia6_lifetime.ia6t_expire != 0 && \
375 (a)->ia6_lifetime.ia6t_expire < time_uptime)
379 * IP6 route structure
381 #ifndef _XOPEN_SOURCE
383 struct rtentry *ro_rt;
384 struct sockaddr_in6 ro_dst;
389 * Options for use with [gs]etsockopt at the IPV6 level.
390 * First word of comment is data type; bool is stored in int.
393 #if 0 /* the followings are relic in IPv4 and hence are disabled */
394 #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
395 #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
396 #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
397 #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
398 #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
400 #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
401 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
402 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */
403 #define IPV6_MULTICAST_HOPS 10 /* int; set/get IP6 multicast hops */
404 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */
405 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
406 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
407 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
408 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
409 /* RFC2292 options */
411 #define IPV6_2292PKTINFO 19 /* bool; send/recv if, src/dst addr */
412 #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
413 #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
414 #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
415 #define IPV6_2292DSTOPTS 23 /* bool; destinaion option */
416 #define IPV6_2292RTHDR 24 /* bool; routing header */
417 #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
420 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
421 #define IPV6_V6ONLY 27 /* bool; only bind INET6 at wildcard bind */
423 #define IPV6_BINDV6ONLY IPV6_V6ONLY
427 #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
429 #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
431 #if 1 /* IPV6FIREWALL */
432 #define IPV6_FW_ADD 30 /* add a firewall rule to chain */
433 #define IPV6_FW_DEL 31 /* delete a firewall rule from chain */
434 #define IPV6_FW_FLUSH 32 /* flush firewall rule chain */
435 #define IPV6_FW_ZERO 33 /* clear single/all firewall counter(s) */
436 #define IPV6_FW_GET 34 /* get entire firewall rule chain */
440 * new socket options introduced in RFC3542
442 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
443 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */
444 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */
445 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */
446 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */
447 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */
449 #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
451 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
452 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
454 /* mtuinfo; get the current path MTU (sopt),
455 * 4 bytes int; MTU notification (cmsg)
457 #define IPV6_PATHMTU 44
458 #if 0 /*obsoleted during 2292bis -> 3542*/
459 #define IPV6_REACHCONF 45 /* no data; ND reachability confirm
460 (cmsg only/not in of RFC3542) */
462 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
463 #define IPV6_HOPLIMIT 47 /* int; send hop limit */
464 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
465 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
466 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
467 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
468 #define IPV6_PKTOPTIONS 52 /* buf/cmsghdr; set/get IPv6 options, this is obsoleted by RFC3542 */
470 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
472 #define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
474 #define IPV6_TCLASS 61 /* int; send traffic class value */
475 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
477 #define IPV6_PREFER_TEMPADDR 63 /* int; prefer temporary addresses as
478 * the source address.
481 * The following option is private; do not use it from user applications.
482 * It is deliberately defined to the same value as IP_MSFILTER.
484 #define IPV6_MSFILTER 74 /* struct __msfilterreq;
485 * set/get multicast source filter list.
487 /* to define items, should talk with KAME guys first, for *BSD compatibility */
489 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
490 #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
491 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
494 * Defaults and limits for options
496 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
497 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
500 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
503 struct in6_addr ipv6mr_multiaddr;
504 unsigned int ipv6mr_interface;
508 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
511 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
512 unsigned int ipi6_ifindex; /* send/recv interface index */
516 * New Control structure for IPV6_RECVPATHMTU socket option introduced in RFC3542.
519 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
524 * Argument for IPV6_PORTRANGE:
525 * - which range to search when port is unspecified at bind() or connect()
527 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
528 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
529 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
531 #ifndef _XOPEN_SOURCE
533 * Definitions for inet6 sysctl operations.
535 * Third level is protocol number.
536 * Fourth level is desired variable within that protocol.
538 #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
540 #define CTL_IPV6PROTO_NAMES { \
541 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
543 { "tcp6", CTLTYPE_NODE }, \
547 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
550 { "udp6", CTLTYPE_NODE }, \
553 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
554 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
555 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
556 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
558 { "ip6", CTLTYPE_NODE }, \
562 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
564 { "ipsec6", CTLTYPE_NODE }, \
571 { "icmp6", CTLTYPE_NODE }, \
573 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
574 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
575 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
576 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
577 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
578 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
579 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
580 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
584 { "pim6", CTLTYPE_NODE }, \
588 * Names for IP sysctl objects
590 #define IPV6CTL_FORWARDING 1 /* act as router */
591 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
592 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
594 #define IPV6CTL_DEFMTU 4 /* default MTU */
596 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
597 #define IPV6CTL_STATS 6 /* stats */
598 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
599 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
600 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
601 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
602 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
603 #define IPV6CTL_ACCEPT_RTADV 12
604 #define IPV6CTL_KEEPFAITH 13
605 #define IPV6CTL_LOG_INTERVAL 14
606 #define IPV6CTL_HDRNESTLIMIT 15
607 #define IPV6CTL_DAD_COUNT 16
608 #define IPV6CTL_AUTO_FLOWLABEL 17
609 #define IPV6CTL_DEFMCASTHLIM 18
610 #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
611 #define IPV6CTL_KAME_VERSION 20
612 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
613 #define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
615 #define IPV6CTL_MAPPED_ADDR 23
616 #define IPV6CTL_V6ONLY 24
618 #define IPV6CTL_RTEXPIRE 25 /* cloned route expiration time */
619 #define IPV6CTL_RTMINEXPIRE 26 /* min value for expiration time */
620 #define IPV6CTL_RTMAXCACHE 27 /* trigger level for dynamic expire */
622 #define IPV6CTL_USETEMPADDR 32 /* use temporary addresses (RFC3041) */
623 #define IPV6CTL_TEMPPLTIME 33 /* preferred lifetime for tmpaddrs */
624 #define IPV6CTL_TEMPVLTIME 34 /* valid lifetime for tmpaddrs */
625 #define IPV6CTL_AUTO_LINKLOCAL 35 /* automatic link-local addr assign */
626 #define IPV6CTL_RIP6STATS 36 /* raw_ip6 stats */
628 #define IPV6CTL_ADDRCTLPOLICY 38 /* get/set address selection policy */
629 #define IPV6CTL_MINHLIM 39 /* minimum Hop-Limit */
631 /* New entries should be added here from current IPV6CTL_MAXID value. */
632 /* to define items, should talk with KAME guys first, for *BSD compatibility */
634 #define ICMPV6CTL_ND6_ONLINKNSRFC4861 47
635 #define IPV6CTL_MAXID 48
636 #endif /* !_XOPEN_SOURCE */
639 * Redefinition of mbuf flags
641 #define M_AUTHIPHDR M_PROTO2
642 #define M_DECRYPTED M_PROTO3
643 #define M_LOOP M_PROTO4
644 #define M_AUTHIPDGM M_PROTO5
654 int in6_cksum (struct mbuf *, uint8_t, uint32_t, uint32_t);
655 int in6_localaddr (struct in6_addr *);
656 int in6_addrscope (struct in6_addr *);
657 struct in6_ifaddr *in6_ifawithscope (struct ifnet *, struct in6_addr *, struct ucred *);
658 struct in6_ifaddr *in6_ifawithifp (struct ifnet *, struct in6_addr *);
659 void in6_if_up (struct ifnet *);
661 void addrsel_policy_init (void);
663 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
664 #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
665 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
667 extern int (*faithprefix_p)(struct in6_addr *);
670 #include <sys/cdefs.h> /* for __BEGIN_DECLS and __END_DECLS */
675 uint8_t *inet6_option_alloc (struct cmsghdr *, int, int, int);
676 int inet6_option_append (struct cmsghdr *, const uint8_t *, int, int);
677 int inet6_option_find (const struct cmsghdr *, uint8_t **, int);
678 int inet6_option_init (void *, struct cmsghdr **, int);
679 int inet6_option_next (const struct cmsghdr *, uint8_t **);
680 int inet6_option_space (int);
682 int inet6_opt_append (void *, socklen_t, int, uint8_t, socklen_t, uint8_t, void **);
683 int inet6_opt_find (void *, socklen_t, int, uint8_t, socklen_t *, void **);
684 int inet6_opt_finish (void *, socklen_t, int);
685 int inet6_opt_get_val (void *, int, void *, socklen_t);
686 int inet6_opt_init (void *, socklen_t);
687 int inet6_opt_next (void *, socklen_t, int, uint8_t *, socklen_t *, void **);
688 int inet6_opt_set_val (void *, int, void *, socklen_t);
690 int inet6_rth_add (void *, const struct in6_addr *);
691 struct in6_addr *inet6_rth_getaddr (const void *, int);
692 void *inet6_rth_init (void *, socklen_t, int, int);
693 int inet6_rth_reverse (const void *, void *);
694 int inet6_rth_segments (const void *);
695 socklen_t inet6_rth_space (int, int);
697 int inet6_rthdr_add (struct cmsghdr *, const struct in6_addr *,
699 struct in6_addr *inet6_rthdr_getaddr (struct cmsghdr *, int);
700 int inet6_rthdr_getflags (const struct cmsghdr *, int);
701 struct cmsghdr *inet6_rthdr_init (void *, int);
702 int inet6_rthdr_lasthop (struct cmsghdr *, unsigned int);
703 #if 0 /* not implemented yet */
704 int inet6_rthdr_reverse (const struct cmsghdr *, struct cmsghdr *);
706 int inet6_rthdr_segments (const struct cmsghdr *);
707 size_t inet6_rthdr_space (int, int);
710 #endif /* !_NETINET6_IN6_H_ */