Annotation of sys/netinet6/in6.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: in6.h,v 1.44 2007/01/22 06:12:18 miod 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: #define __KAME_VERSION "OpenBSD-current"
78:
79: /*
80: * Local port number conventions:
81: *
82: * Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
83: * unless a kernel is compiled with IPNOPRIVPORTS defined.
84: *
85: * When a user does a bind(2) or connect(2) with a port number of zero,
86: * a non-conflicting local port address is chosen.
87: *
88: * The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
89: * that is settable by sysctl(3); net.inet.ip.anonportmin and
90: * net.inet.ip.anonportmax respectively.
91: *
92: * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
93: * default assignment range.
94: *
95: * The value IP_PORTRANGE_DEFAULT causes the default behavior.
96: *
97: * The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
98: * and exists only for FreeBSD compatibility purposes.
99: *
100: * The value IP_PORTRANGE_LOW changes the range to the "low" are
101: * that is (by convention) restricted to privileged processes.
102: * This convention is based on "vouchsafe" principles only.
103: * It is only secure if you trust the remote host to restrict these ports.
104: * The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
105: */
106:
107: #define IPV6PORT_RESERVED 1024
108: #define IPV6PORT_ANONMIN 49152
109: #define IPV6PORT_ANONMAX 65535
110: #define IPV6PORT_RESERVEDMIN 600
111: #define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
112:
113: /*
114: * IPv6 address
115: */
116: struct in6_addr {
117: union {
118: u_int8_t __u6_addr8[16];
119: u_int16_t __u6_addr16[8];
120: u_int32_t __u6_addr32[4];
121: } __u6_addr; /* 128-bit IP6 address */
122: };
123:
124: #define s6_addr __u6_addr.__u6_addr8
125: #ifdef _KERNEL /* XXX nonstandard */
126: #define s6_addr8 __u6_addr.__u6_addr8
127: #define s6_addr16 __u6_addr.__u6_addr16
128: #define s6_addr32 __u6_addr.__u6_addr32
129: #endif
130:
131: #define INET6_ADDRSTRLEN 46
132:
133: /*
134: * Socket address for IPv6
135: */
136: #if __BSD_VISIBLE
137: #define SIN6_LEN
138: #endif
139: struct sockaddr_in6 {
140: u_int8_t sin6_len; /* length of this struct(sa_family_t)*/
141: sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */
142: in_port_t sin6_port; /* Transport layer port # (in_port_t)*/
143: u_int32_t sin6_flowinfo; /* IP6 flow information */
144: struct in6_addr sin6_addr; /* IP6 address */
145: u_int32_t sin6_scope_id; /* intface scope id */
146: };
147:
148: /*
149: * Local definition for masks
150: */
151: #ifdef _KERNEL /* XXX nonstandard */
152: #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
153: #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
154: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
155: #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
156: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
157: #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
158: 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
159: #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
160: 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
161: #endif
162:
163: #ifdef _KERNEL
164: extern const struct sockaddr_in6 sa6_any;
165:
166: extern const struct in6_addr in6mask0;
167: extern const struct in6_addr in6mask32;
168: extern const struct in6_addr in6mask64;
169: extern const struct in6_addr in6mask96;
170: extern const struct in6_addr in6mask128;
171: #endif /* _KERNEL */
172:
173: /*
174: * Macros started with IPV6_ADDR is KAME local
175: */
176: #ifdef _KERNEL /* XXX nonstandard */
177: #if BYTE_ORDER == BIG_ENDIAN
178: #define IPV6_ADDR_INT32_ONE 1
179: #define IPV6_ADDR_INT32_TWO 2
180: #define IPV6_ADDR_INT32_MNL 0xff010000
181: #define IPV6_ADDR_INT32_MLL 0xff020000
182: #define IPV6_ADDR_INT32_SMP 0x0000ffff
183: #define IPV6_ADDR_INT16_ULL 0xfe80
184: #define IPV6_ADDR_INT16_USL 0xfec0
185: #define IPV6_ADDR_INT16_MLL 0xff02
186: #elif BYTE_ORDER == LITTLE_ENDIAN
187: #define IPV6_ADDR_INT32_ONE 0x01000000
188: #define IPV6_ADDR_INT32_TWO 0x02000000
189: #define IPV6_ADDR_INT32_MNL 0x000001ff
190: #define IPV6_ADDR_INT32_MLL 0x000002ff
191: #define IPV6_ADDR_INT32_SMP 0xffff0000
192: #define IPV6_ADDR_INT16_ULL 0x80fe
193: #define IPV6_ADDR_INT16_USL 0xc0fe
194: #define IPV6_ADDR_INT16_MLL 0x02ff
195: #endif
196: #endif
197:
198: /*
199: * Definition of some useful macros to handle IP6 addresses
200: */
201: #if __BSD_VISIBLE
202: #define IN6ADDR_ANY_INIT \
203: {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
204: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
205: #define IN6ADDR_LOOPBACK_INIT \
206: {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
207: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
208: #define IN6ADDR_NODELOCAL_ALLNODES_INIT \
209: {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
210: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
211: #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \
212: {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
213: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
214: #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
215: {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
216: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
217: #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
218: {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
219: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
220: #endif
221:
222: extern const struct in6_addr in6addr_any;
223: extern const struct in6_addr in6addr_loopback;
224: #if __BSD_VISIBLE
225: extern const struct in6_addr in6addr_intfacelocal_allnodes;
226: extern const struct in6_addr in6addr_linklocal_allnodes;
227: extern const struct in6_addr in6addr_linklocal_allrouters;
228: #endif
229:
230: /*
231: * Equality
232: * NOTE: Some of kernel programming environment (for example, openbsd/sparc)
233: * does not supply memcmp(). For userland memcmp() is preferred as it is
234: * in ANSI standard.
235: */
236: #ifdef _KERNEL
237: #define IN6_ARE_ADDR_EQUAL(a, b) \
238: (bcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
239: #else
240: #if __BSD_VISIBLE
241: #define IN6_ARE_ADDR_EQUAL(a, b) \
242: (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
243: #endif
244: #endif
245:
246: /*
247: * Unspecified
248: */
249: #define IN6_IS_ADDR_UNSPECIFIED(a) \
250: ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
251: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
252: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
253: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
254:
255: /*
256: * Loopback
257: */
258: #define IN6_IS_ADDR_LOOPBACK(a) \
259: ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
260: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
261: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
262: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
263:
264: /*
265: * IPv4 compatible
266: */
267: #define IN6_IS_ADDR_V4COMPAT(a) \
268: ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
269: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
270: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
271: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \
272: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
273:
274: /*
275: * Mapped
276: */
277: #define IN6_IS_ADDR_V4MAPPED(a) \
278: ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
279: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
280: (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
281:
282: /*
283: * KAME Scope Values
284: */
285:
286: #ifdef _KERNEL /* XXX nonstandard */
287: #define IPV6_ADDR_SCOPE_NODELOCAL 0x01
288: #define IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
289: #define IPV6_ADDR_SCOPE_LINKLOCAL 0x02
290: #define IPV6_ADDR_SCOPE_SITELOCAL 0x05
291: #define IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
292: #define IPV6_ADDR_SCOPE_GLOBAL 0x0e
293: #else
294: #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01
295: #define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01
296: #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02
297: #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05
298: #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */
299: #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e
300: #endif
301:
302: /*
303: * Unicast Scope
304: * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
305: */
306: #define IN6_IS_ADDR_LINKLOCAL(a) \
307: (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
308: #define IN6_IS_ADDR_SITELOCAL(a) \
309: (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
310:
311: /*
312: * Multicast
313: */
314: #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff)
315:
316: #ifdef _KERNEL /* XXX nonstandard */
317: #define IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
318: #else
319: #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f)
320: #endif
321:
322: /*
323: * Multicast Scope
324: */
325: #ifdef _KERNEL /* refers nonstandard items */
326: #define IN6_IS_ADDR_MC_NODELOCAL(a) \
327: (IN6_IS_ADDR_MULTICAST(a) && \
328: (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
329: #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
330: (IN6_IS_ADDR_MULTICAST(a) && \
331: (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
332: #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
333: (IN6_IS_ADDR_MULTICAST(a) && \
334: (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
335: #define IN6_IS_ADDR_MC_SITELOCAL(a) \
336: (IN6_IS_ADDR_MULTICAST(a) && \
337: (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
338: #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
339: (IN6_IS_ADDR_MULTICAST(a) && \
340: (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
341: #define IN6_IS_ADDR_MC_GLOBAL(a) \
342: (IN6_IS_ADDR_MULTICAST(a) && \
343: (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
344: #else
345: #define IN6_IS_ADDR_MC_NODELOCAL(a) \
346: (IN6_IS_ADDR_MULTICAST(a) && \
347: (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
348: #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \
349: (IN6_IS_ADDR_MULTICAST(a) && \
350: (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_INTFACELOCAL))
351: #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
352: (IN6_IS_ADDR_MULTICAST(a) && \
353: (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
354: #define IN6_IS_ADDR_MC_SITELOCAL(a) \
355: (IN6_IS_ADDR_MULTICAST(a) && \
356: (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
357: #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
358: (IN6_IS_ADDR_MULTICAST(a) && \
359: (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
360: #define IN6_IS_ADDR_MC_GLOBAL(a) \
361: (IN6_IS_ADDR_MULTICAST(a) && \
362: (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
363: #endif
364:
365: #ifdef _KERNEL /* nonstandard */
366: /*
367: * KAME Scope
368: */
369: #define IN6_IS_SCOPE_LINKLOCAL(a) \
370: ((IN6_IS_ADDR_LINKLOCAL(a)) || \
371: (IN6_IS_ADDR_MC_LINKLOCAL(a)))
372: #define IN6_IS_SCOPE_EMBED(a) \
373: ((IN6_IS_ADDR_LINKLOCAL(a)) || \
374: (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \
375: (IN6_IS_ADDR_MC_INTFACELOCAL(a)))
376:
377: #define IFA6_IS_DEPRECATED(a) \
378: ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
379: (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
380: (a)->ia6_lifetime.ia6t_pltime)
381: #define IFA6_IS_INVALID(a) \
382: ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
383: (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
384: (a)->ia6_lifetime.ia6t_vltime)
385: #endif
386:
387: /*
388: * IP6 route structure
389: */
390: #if __BSD_VISIBLE
391: struct route_in6 {
392: struct rtentry *ro_rt;
393: struct sockaddr_in6 ro_dst;
394: };
395: #endif
396:
397: /*
398: * Options for use with [gs]etsockopt at the IPV6 level.
399: * First word of comment is data type; bool is stored in int.
400: */
401: #define IPV6_OPTIONS 1 /* buf/ip6_opts; set/get IP6 options */
402: /* no hdrincl */
403: #define IPV6_SOCKOPT_RESERVED1 3 /* reserved for future use */
404: #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */
405: #if 0 /* the followings are relic in IPv4 and hence are disabled */
406: #define IPV6_RECVOPTS 5 /* bool; receive all IP6 opts w/dgram */
407: #define IPV6_RECVRETOPTS 6 /* bool; receive IP6 opts for response */
408: #define IPV6_RECVDSTADDR 7 /* bool; receive IP6 dst addr w/dgram */
409: #define IPV6_RETOPTS 8 /* ip6_opts; set/get IP6 options */
410: #endif
411: #define IPV6_MULTICAST_IF 9 /* u_char; set/get IP6 multicast i/f */
412: #define IPV6_MULTICAST_HOPS 10 /* u_char; set/get IP6 multicast hops */
413: #define IPV6_MULTICAST_LOOP 11 /* u_char; set/get IP6 multicast loopback */
414: #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */
415: #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */
416: #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */
417: #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
418:
419: /* RFC2292 options */
420: #ifdef _KERNEL
421: #define IPV6_2292PKTINFO 19 /* bool; send/rcv if, src/dst addr */
422: #define IPV6_2292HOPLIMIT 20 /* bool; hop limit */
423: #define IPV6_2292NEXTHOP 21 /* bool; next hop addr */
424: #define IPV6_2292HOPOPTS 22 /* bool; hop-by-hop option */
425: #define IPV6_2292DSTOPTS 23 /* bool; destination option */
426: #define IPV6_2292RTHDR 24 /* bool; routing header */
427: #define IPV6_2292PKTOPTIONS 25 /* buf/cmsghdr; set/get IPv6 options */
428: #endif
429:
430: #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */
431: #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */
432:
433: #if 0 /*KAME IPSEC*/
434: #define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
435: #endif
436: #define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
437:
438: /* 30-34: reserved */
439:
440: /* new socket options introduced in RFC3542 */
441: #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */
442:
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 */
448: #ifdef _KERNEL
449: #define IPV6_RECVRTHDRDSTOPTS 41 /* bool; recv dst option before rthdr */
450: #endif
451:
452: #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */
453: #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */
454:
455: #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt),
456: 4 bytes int; MTU notification (cmsg) */
457:
458: /* 45: reserved */
459:
460: /* more new socket options introduced in RFC3542 */
461: #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */
462: #define IPV6_HOPLIMIT 47 /* int; send hop limit */
463: #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */
464: #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */
465: #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option befor rthdr */
466: #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */
467:
468: /* 52: reserved */
469: #define IPV6_AUTH_LEVEL 53 /* int; authentication used */
470: #define IPV6_ESP_TRANS_LEVEL 54 /* int; transport encryption */
471: #define IPV6_ESP_NETWORK_LEVEL 55 /* int; full-packet encryption */
472: #define IPSEC6_OUTSA 56 /* set the outbound SA for a socket */
473: #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */
474: /* 58: reserved */
475: #define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */
476: #define IPV6_IPCOMP_LEVEL 60 /* int; compression */
477:
478: #define IPV6_TCLASS 61 /* int; send traffic class value */
479: #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */
480:
481: /* to define items, should talk with KAME guys first, for *BSD compatibility */
482:
483: #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor. XXX old spec */
484: #define IPV6_RTHDR_STRICT 1 /* this hop must be a neighbor. XXX old spec */
485: #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */
486:
487: /*
488: * Defaults and limits for options
489: */
490: #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */
491: #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
492:
493: /*
494: * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
495: */
496: struct ipv6_mreq {
497: struct in6_addr ipv6mr_multiaddr;
498: unsigned int ipv6mr_interface;
499: };
500:
501: /*
502: * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
503: */
504: struct in6_pktinfo {
505: struct in6_addr ipi6_addr; /* src/dst IPv6 address */
506: unsigned int ipi6_ifindex; /* send/recv interface index */
507: };
508:
509: /*
510: * Control structure for IPV6_RECVPATHMTU socket option.
511: */
512: struct ip6_mtuinfo {
513: struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
514: u_int32_t ip6m_mtu;
515: };
516:
517: /*
518: * Argument for IPV6_PORTRANGE:
519: * - which range to search when port is unspecified at bind() or connect()
520: */
521: #define IPV6_PORTRANGE_DEFAULT 0 /* default range */
522: #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */
523: #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */
524:
525: #if __BSD_VISIBLE
526: /*
527: * Definitions for inet6 sysctl operations.
528: *
529: * Third level is protocol number.
530: * Fourth level is desired variable within that protocol.
531: */
532: #define IPV6PROTO_MAXID (IPPROTO_PIM + 1) /* don't list to IPV6PROTO_MAX */
533:
534: #define CTL_IPV6PROTO_NAMES { \
535: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
536: { 0, 0 }, \
537: { "tcp6", CTLTYPE_NODE }, \
538: { 0, 0 }, \
539: { 0, 0 }, \
540: { 0, 0 }, \
541: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
542: { 0, 0 }, \
543: { 0, 0 }, \
544: { "udp6", CTLTYPE_NODE }, \
545: { 0, 0 }, \
546: { 0, 0 }, \
547: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
548: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
549: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
550: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
551: { 0, 0 }, \
552: { "ip6", CTLTYPE_NODE }, \
553: { 0, 0 }, \
554: { 0, 0 }, \
555: { 0, 0 }, \
556: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
557: { 0, 0 }, \
558: { "ipsec6", CTLTYPE_NODE }, \
559: { 0, 0 }, \
560: { 0, 0 }, \
561: { 0, 0 }, \
562: { 0, 0 }, \
563: { 0, 0 }, \
564: { 0, 0 }, \
565: { "icmp6", CTLTYPE_NODE }, \
566: { 0, 0 }, \
567: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
568: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
569: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
570: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
571: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
572: { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
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 }, \
576: { 0, 0 }, \
577: { 0, 0 }, \
578: { "pim6", CTLTYPE_NODE }, \
579: }
580:
581: /*
582: * Names for IP sysctl objects
583: */
584: #define IPV6CTL_FORWARDING 1 /* act as router */
585: #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
586: #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
587: #ifdef notyet
588: #define IPV6CTL_DEFMTU 4 /* default MTU */
589: #endif
590: #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
591: #define IPV6CTL_STATS 6 /* stats */
592: #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
593: #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
594: #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
595: #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
596: #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
597: #define IPV6CTL_ACCEPT_RTADV 12
598: #define IPV6CTL_KEEPFAITH 13
599: #define IPV6CTL_LOG_INTERVAL 14
600: #define IPV6CTL_HDRNESTLIMIT 15
601: #define IPV6CTL_DAD_COUNT 16
602: #define IPV6CTL_AUTO_FLOWLABEL 17
603: #define IPV6CTL_DEFMCASTHLIM 18
604: #ifdef notdef /* obsolete */
605: #define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
606: #endif
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: /*#define IPV6CTL_MAPPED_ADDR 23 not for openbsd */
611: #define IPV6CTL_V6ONLY 24
612: /* 25 to 40: resrved */
613: #define IPV6CTL_MAXFRAGS 41 /* max fragments */
614: #define IPV6CTL_MFORWARDING 42
615: #define IPV6CTL_MULTIPATH 43
616: #define IPV6CTL_MCAST_PMTU 44 /* path MTU discovery for multicast */
617: #define IPV6CTL_MAXID 45
618: /* New entries should be added here from current IPV6CTL_MAXID value. */
619: /* to define items, should talk with KAME guys first, for *BSD compatibility */
620:
621: #define IPV6CTL_NAMES { \
622: { 0, 0 }, \
623: { "forwarding", CTLTYPE_INT }, \
624: { "redirect", CTLTYPE_INT }, \
625: { "hlim", CTLTYPE_INT }, \
626: { "mtu", CTLTYPE_INT }, \
627: { "forwsrcrt", CTLTYPE_INT }, \
628: { 0, 0 }, \
629: { 0, 0 }, \
630: { "mrtproto", CTLTYPE_INT }, \
631: { "maxfragpackets", CTLTYPE_INT }, \
632: { "sourcecheck", CTLTYPE_INT }, \
633: { "sourcecheck_logint", CTLTYPE_INT }, \
634: { "accept_rtadv", CTLTYPE_INT }, \
635: { "keepfaith", CTLTYPE_INT }, \
636: { "log_interval", CTLTYPE_INT }, \
637: { "hdrnestlimit", CTLTYPE_INT }, \
638: { "dad_count", CTLTYPE_INT }, \
639: { "auto_flowlabel", CTLTYPE_INT }, \
640: { "defmcasthlim", CTLTYPE_INT }, \
641: { 0, 0 }, \
642: { "kame_version", CTLTYPE_STRING }, \
643: { "use_deprecated", CTLTYPE_INT }, \
644: { "rr_prune", CTLTYPE_INT }, \
645: { 0, 0 }, \
646: { "v6only", CTLTYPE_INT }, \
647: { 0, 0 }, \
648: { 0, 0 }, \
649: { 0, 0 }, \
650: { 0, 0 }, \
651: { 0, 0 }, \
652: { 0, 0 }, \
653: { 0, 0 }, \
654: { 0, 0 }, \
655: { 0, 0 }, \
656: { 0, 0 }, \
657: { 0, 0 }, \
658: { 0, 0 }, \
659: { 0, 0 }, \
660: { 0, 0 }, \
661: { 0, 0 }, \
662: { 0, 0 }, \
663: { "maxfrags", CTLTYPE_INT }, \
664: { "mforwarding", CTLTYPE_INT }, \
665: { "multipath", CTLTYPE_INT }, \
666: { "multicast_mtudisc", CTLTYPE_INT }, \
667: }
668:
669: #define IPV6CTL_VARS { \
670: NULL, \
671: &ip6_forwarding, \
672: &ip6_sendredirects, \
673: &ip6_defhlim, \
674: NULL, \
675: NULL, \
676: NULL, \
677: NULL, \
678: NULL, \
679: &ip6_maxfragpackets, \
680: NULL, \
681: NULL, \
682: &ip6_accept_rtadv, \
683: &ip6_keepfaith, \
684: &ip6_log_interval, \
685: &ip6_hdrnestlimit, \
686: &ip6_dad_count, \
687: &ip6_auto_flowlabel, \
688: &ip6_defmcasthlim, \
689: NULL, \
690: NULL, \
691: &ip6_use_deprecated, \
692: &ip6_rr_prune, \
693: NULL, \
694: NULL, \
695: NULL, \
696: NULL, \
697: NULL, \
698: NULL, \
699: NULL, \
700: NULL, \
701: NULL, \
702: NULL, \
703: NULL, \
704: NULL, \
705: NULL, \
706: NULL, \
707: NULL, \
708: NULL, \
709: NULL, \
710: NULL, \
711: &ip6_maxfrags, \
712: &ip6_mforwarding, \
713: &ip6_multipath, \
714: &ip6_mcast_pmtu, \
715: }
716:
717: #endif /* __BSD_VISIBLE */
718:
719: #ifdef _KERNEL
720: struct cmsghdr;
721:
722: int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t);
723: int in6_localaddr(struct in6_addr *);
724: int in6_addrscope(struct in6_addr *);
725: struct in6_ifaddr *in6_ifawithscope(struct ifnet *, struct in6_addr *);
726: struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
727: extern void in6_if_up(struct ifnet *);
728:
729: #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
730: #define sin6tosa(sin6) ((struct sockaddr *)(sin6))
731: #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
732: #endif /* _KERNEL */
733:
734: __BEGIN_DECLS
735: struct cmsghdr;
736:
737: extern int inet6_option_space(int);
738: extern int inet6_option_init(void *, struct cmsghdr **, int);
739: extern int inet6_option_append(struct cmsghdr *, const u_int8_t *,
740: int, int);
741: extern u_int8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
742: extern int inet6_option_next(const struct cmsghdr *, u_int8_t **);
743: extern int inet6_option_find(const struct cmsghdr *, u_int8_t **, int);
744:
745: extern size_t inet6_rthdr_space(int, int);
746: extern struct cmsghdr *inet6_rthdr_init(void *, int);
747: extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
748: unsigned int);
749: extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
750: #if 0 /* not implemented yet */
751: extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
752: #endif
753: extern int inet6_rthdr_segments(const struct cmsghdr *);
754: extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
755: extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
756:
757: extern int inet6_opt_init(void *, socklen_t);
758: extern int inet6_opt_append(void *, socklen_t, int, u_int8_t,
759: socklen_t, u_int8_t, void **);
760: extern int inet6_opt_finish(void *, socklen_t, int);
761: extern int inet6_opt_set_val(void *, int, void *, socklen_t);
762:
763: extern int inet6_opt_next(void *, socklen_t, int, u_int8_t *,
764: socklen_t *, void **);
765: extern int inet6_opt_find(void *, socklen_t, int, u_int8_t,
766: socklen_t *, void **);
767: extern int inet6_opt_get_val(void *, int, void *, socklen_t);
768:
769: extern socklen_t inet6_rth_space(int, int);
770: extern void *inet6_rth_init(void *, socklen_t, int, int);
771: extern int inet6_rth_add(void *, const struct in6_addr *);
772: extern int inet6_rth_reverse(const void *, void *);
773: extern int inet6_rth_segments(const void *);
774: extern struct in6_addr *inet6_rth_getaddr(const void *, int);
775: __END_DECLS
776:
777: #endif /* !_NETINET6_IN6_H_ */
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