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#ifdef _KERNEL	/* 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/* to define items, should talk with KAME guys first, for *BSD compatibility */
515
516#define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
517#define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
518#define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */
519
520/*
521 * Defaults and limits for options
522 */
523#define IPV6_DEFAULT_MULTICAST_HOPS 1	/* normally limit m'casts to 1 hop */
524#define IPV6_DEFAULT_MULTICAST_LOOP 1	/* normally hear sends if a member */
525
526/*
527 * Limit for IPv6 multicast memberships
528 */
529#define	IPV6_MAX_MEMBERSHIPS	4095
530
531/*
532 * Default resource limits for IPv6 multicast source filtering.
533 * These may be modified by sysctl.
534 */
535#define	IPV6_MAX_GROUP_SRC_FILTER	512	/* sources per group */
536#define	IPV6_MAX_SOCK_SRC_FILTER	128	/* sources per socket/group */
537
538/*
539 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
540 */
541struct ipv6_mreq {
542	struct in6_addr	ipv6mr_multiaddr;
543	unsigned int	ipv6mr_interface;
544};
545
546/*
547 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
548 */
549struct in6_pktinfo {
550	struct in6_addr	ipi6_addr;	/* src/dst IPv6 address */
551	unsigned int	ipi6_ifindex;	/* send/recv interface index */
552};
553
554/*
555 * Control structure for IPV6_RECVPATHMTU socket option.
556 */
557struct ip6_mtuinfo {
558	struct sockaddr_in6 ip6m_addr;	/* or sockaddr_storage? */
559	uint32_t ip6m_mtu;
560};
561
562/*
563 * Argument for IPV6_PORTRANGE:
564 * - which range to search when port is unspecified at bind() or connect()
565 */
566#define	IPV6_PORTRANGE_DEFAULT	0	/* default range */
567#define	IPV6_PORTRANGE_HIGH	1	/* "high" - request firewall bypass */
568#define	IPV6_PORTRANGE_LOW	2	/* "low" - vouchsafe security */
569
570#if __BSD_VISIBLE
571/*
572 * Definitions for inet6 sysctl operations.
573 *
574 * Third level is protocol number.
575 * Fourth level is desired variable within that protocol.
576 */
577#define IPV6PROTO_MAXID	(IPPROTO_PIM + 1)	/* don't list to IPV6PROTO_MAX */
578
579/*
580 * Names for IP sysctl objects
581 */
582#define IPV6CTL_FORWARDING	1	/* act as router */
583#define IPV6CTL_SENDREDIRECTS	2	/* may send redirects when forwarding*/
584#define IPV6CTL_DEFHLIM		3	/* default Hop-Limit */
585#ifdef notyet
586#define IPV6CTL_DEFMTU		4	/* default MTU */
587#endif
588#define IPV6CTL_FORWSRCRT	5	/* forward source-routed dgrams */
589#define IPV6CTL_STATS		6	/* stats */
590#define IPV6CTL_MRTSTATS	7	/* multicast forwarding stats */
591#define IPV6CTL_MRTPROTO	8	/* multicast routing protocol */
592#define IPV6CTL_MAXFRAGPACKETS	9	/* max packets reassembly queue */
593#define IPV6CTL_SOURCECHECK	10	/* verify source route and intf */
594#define IPV6CTL_SOURCECHECK_LOGINT 11	/* minimume logging interval */
595#define IPV6CTL_ACCEPT_RTADV	12
596					/* 13; unused; was: IPV6CTL_KEEPFAITH */
597#define IPV6CTL_LOG_INTERVAL	14
598#define IPV6CTL_HDRNESTLIMIT	15
599#define IPV6CTL_DAD_COUNT	16
600#define IPV6CTL_AUTO_FLOWLABEL	17
601#define IPV6CTL_DEFMCASTHLIM	18
602#define IPV6CTL_GIF_HLIM	19	/* default HLIM for gif encap packet */
603#define IPV6CTL_KAME_VERSION	20
604#define IPV6CTL_USE_DEPRECATED	21	/* use deprecated addr (RFC2462 5.5.4) */
605#define IPV6CTL_RR_PRUNE	22	/* walk timer for router renumbering */
606#if 0	/* obsolete */
607#define IPV6CTL_MAPPED_ADDR	23
608#endif
609#define IPV6CTL_V6ONLY		24
610/*	IPV6CTL_RTEXPIRE	25	deprecated */
611/*	IPV6CTL_RTMINEXPIRE	26	deprecated */
612/*	IPV6CTL_RTMAXCACHE	27	deprecated */
613
614#define IPV6CTL_USETEMPADDR	32	/* use temporary addresses (RFC3041) */
615#define IPV6CTL_TEMPPLTIME	33	/* preferred lifetime for tmpaddrs */
616#define IPV6CTL_TEMPVLTIME	34	/* valid lifetime for tmpaddrs */
617#define IPV6CTL_AUTO_LINKLOCAL	35	/* automatic link-local addr assign */
618#define IPV6CTL_RIP6STATS	36	/* raw_ip6 stats */
619#define IPV6CTL_PREFER_TEMPADDR	37	/* prefer temporary addr as src */
620#define IPV6CTL_ADDRCTLPOLICY	38	/* get/set address selection policy */
621#define IPV6CTL_USE_DEFAULTZONE	39	/* use default scope zone */
622
623#define IPV6CTL_MAXFRAGS	41	/* max fragments */
624#if 0
625#define IPV6CTL_IFQ		42	/* ip6intrq node */
626#define IPV6CTL_ISATAPRTR	43	/* isatap router */
627#endif
628#define IPV6CTL_MCAST_PMTU	44	/* enable pMTU discovery for multicast? */
629
630/* New entries should be added here from current IPV6CTL_MAXID value. */
631/* to define items, should talk with KAME guys first, for *BSD compatibility */
632#define IPV6CTL_STEALTH		45
633
634#define	ICMPV6CTL_ND6_ONLINKNSRFC4861	47
635#define	IPV6CTL_NO_RADR		48	/* No defroute from RA */
636#define	IPV6CTL_NORBIT_RAIF	49	/* Disable R-bit in NA on RA
637					 * receiving IF. */
638#define	IPV6CTL_RFC6204W3	50	/* Accept defroute even when forwarding
639					   enabled */
640#define	IPV6CTL_INTRQMAXLEN	51	/* max length of IPv6 netisr queue */
641#define	IPV6CTL_INTRDQMAXLEN	52	/* max length of direct IPv6 netisr
642					 * queue */
643#define	IPV6CTL_MAXFRAGSPERPACKET	53 /* Max fragments per packet */
644#define	IPV6CTL_MAXFRAGBUCKETSIZE	54 /* Max reassembly queues per bucket */
645#define	IPV6CTL_MAXID		55
646#endif /* __BSD_VISIBLE */
647
648/*
649 * Since both netinet/ and netinet6/ call into netipsec/ and netpfil/,
650 * the protocol specific mbuf flags are shared between them.
651 */
652#define	M_FASTFWD_OURS		M_PROTO1	/* changed dst to local */
653#define	M_IP6_NEXTHOP		M_PROTO2	/* explicit ip nexthop */
654#define	M_IP_NEXTHOP		M_PROTO2	/* explicit ip nexthop */
655#define	M_SKIP_FIREWALL		M_PROTO3	/* skip firewall processing */
656#define	M_AUTHIPHDR		M_PROTO4
657#define	M_DECRYPTED		M_PROTO5
658#define	M_LOOP			M_PROTO6
659#define	M_AUTHIPDGM		M_PROTO7
660#define	M_RTALERT_MLD		M_PROTO8
661#define	M_FRAGMENTED		M_PROTO9	/* contained fragment header */
662
663#ifdef _KERNEL
664struct cmsghdr;
665struct ip6_hdr;
666
667int	in6_cksum_pseudo(struct ip6_hdr *, uint32_t, uint8_t, uint16_t);
668int	in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t);
669int	in6_cksum_partial(struct mbuf *, u_int8_t, u_int32_t, u_int32_t,
670			  u_int32_t);
671int	in6_localaddr(struct in6_addr *);
672int	in6_localip(struct in6_addr *);
673int	in6_ifhasaddr(struct ifnet *, struct in6_addr *);
674int	in6_addrscope(const struct in6_addr *);
675char	*ip6_sprintf(char *, const struct in6_addr *);
676struct	in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
677extern void in6_if_up(struct ifnet *);
678struct sockaddr;
679extern	u_char	ip6_protox[];
680
681void	in6_sin6_2_sin(struct sockaddr_in *sin,
682			    struct sockaddr_in6 *sin6);
683void	in6_sin_2_v4mapsin6(struct sockaddr_in *sin,
684				 struct sockaddr_in6 *sin6);
685void	in6_sin6_2_sin_in_sock(struct sockaddr *nam);
686void	in6_sin_2_v4mapsin6_in_sock(struct sockaddr **nam);
687extern void addrsel_policy_init(void);
688
689#define	satosin6(sa)	((struct sockaddr_in6 *)(sa))
690#define	sin6tosa(sin6)	((struct sockaddr *)(sin6))
691#define	ifatoia6(ifa)	((struct in6_ifaddr *)(ifa))
692
693#endif /* _KERNEL */
694
695#ifndef _SIZE_T_DECLARED
696typedef	__size_t	size_t;
697#define	_SIZE_T_DECLARED
698#endif
699
700#ifndef _SOCKLEN_T_DECLARED
701typedef	__socklen_t	socklen_t;
702#define	_SOCKLEN_T_DECLARED
703#endif
704
705#if __BSD_VISIBLE
706
707__BEGIN_DECLS
708struct cmsghdr;
709
710extern int inet6_option_space(int);
711extern int inet6_option_init(void *, struct cmsghdr **, int);
712extern int inet6_option_append(struct cmsghdr *, const uint8_t *,
713	int, int);
714extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
715extern int inet6_option_next(const struct cmsghdr *, uint8_t **);
716extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int);
717
718extern size_t inet6_rthdr_space(int, int);
719extern struct cmsghdr *inet6_rthdr_init(void *, int);
720extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
721	unsigned int);
722extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
723#if 0 /* not implemented yet */
724extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
725#endif
726extern int inet6_rthdr_segments(const struct cmsghdr *);
727extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
728extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
729
730extern int inet6_opt_init(void *, socklen_t);
731extern int inet6_opt_append(void *, socklen_t, int, uint8_t, socklen_t,
732	uint8_t, void **);
733extern int inet6_opt_finish(void *, socklen_t, int);
734extern int inet6_opt_set_val(void *, int, void *, socklen_t);
735
736extern int inet6_opt_next(void *, socklen_t, int, uint8_t *, socklen_t *,
737	void **);
738extern int inet6_opt_find(void *, socklen_t, int, uint8_t, socklen_t *,
739	void **);
740extern int inet6_opt_get_val(void *, int, void *, socklen_t);
741extern socklen_t inet6_rth_space(int, int);
742extern void *inet6_rth_init(void *, socklen_t, int, int);
743extern int inet6_rth_add(void *, const struct in6_addr *);
744extern int inet6_rth_reverse(const void *, void *);
745extern int inet6_rth_segments(const void *);
746extern struct in6_addr *inet6_rth_getaddr(const void *, int);
747__END_DECLS
748
749#endif /* __BSD_VISIBLE */
750
751#endif /* !_NETINET6_IN6_H_ */
752