xref: /freebsd/sys/netinet6/in6_var.h (revision ae83180158c4c937f170e31eff311b18c0286a93)
1 /*	$FreeBSD$	*/
2 /*	$KAME: in6_var.h,v 1.56 2001/03/29 05:34:31 itojun 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) 1985, 1986, 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. All advertising materials mentioning features or use of this software
46  *    must display the following acknowledgement:
47  *	This product includes software developed by the University of
48  *	California, Berkeley and its contributors.
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.
52  *
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
57  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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
63  * SUCH DAMAGE.
64  *
65  *	@(#)in_var.h	8.1 (Berkeley) 6/10/93
66  */
67 
68 #ifndef _NETINET6_IN6_VAR_H_
69 #define _NETINET6_IN6_VAR_H_
70 
71 /*
72  * Interface address, Internet version.  One of these structures
73  * is allocated for each interface with an Internet address.
74  * The ifaddr structure contains the protocol-independent part
75  * of the structure and is assumed to be first.
76  */
77 
78 /*
79  * pltime/vltime are just for future reference (required to implements 2
80  * hour rule for hosts).  they should never be modified by nd6_timeout or
81  * anywhere else.
82  *	userland -> kernel: accept pltime/vltime
83  *	kernel -> userland: throw up everything
84  *	in kernel: modify preferred/expire only
85  */
86 struct in6_addrlifetime {
87 	time_t ia6t_expire;	/* valid lifetime expiration time */
88 	time_t ia6t_preferred;	/* preferred lifetime expiration time */
89 	u_int32_t ia6t_vltime;	/* valid lifetime */
90 	u_int32_t ia6t_pltime;	/* prefix lifetime */
91 };
92 
93 struct	in6_ifaddr {
94 	struct	ifaddr ia_ifa;		/* protocol-independent info */
95 #define	ia_ifp		ia_ifa.ifa_ifp
96 #define ia_flags	ia_ifa.ifa_flags
97 	struct	sockaddr_in6 ia_addr;	/* interface address */
98 	struct	sockaddr_in6 ia_net;	/* network number of interface */
99 	struct	sockaddr_in6 ia_dstaddr; /* space for destination addr */
100 	struct	sockaddr_in6 ia_prefixmask; /* prefix mask */
101 	u_int32_t ia_plen;		/* prefix length */
102 	struct	in6_ifaddr *ia_next;	/* next in6 list of IP6 addresses */
103 	int	ia6_flags;
104 
105 	struct in6_addrlifetime ia6_lifetime;
106 	struct ifprefix *ia6_ifpr; /* back pointer to ifprefix */
107 
108 	struct nd_prefix *ia6_ndpr; /* back pointer to the ND prefix
109 				     * (for autoconfigured addresses only)
110 				     */
111 };
112 
113 /*
114  * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
115  */
116 struct in6_ifstat {
117 	u_quad_t ifs6_in_receive;	/* # of total input datagram */
118 	u_quad_t ifs6_in_hdrerr;	/* # of datagrams with invalid hdr */
119 	u_quad_t ifs6_in_toobig;	/* # of datagrams exceeded MTU */
120 	u_quad_t ifs6_in_noroute;	/* # of datagrams with no route */
121 	u_quad_t ifs6_in_addrerr;	/* # of datagrams with invalid dst */
122 	u_quad_t ifs6_in_protounknown;	/* # of datagrams with unknown proto */
123 					/* NOTE: increment on final dst if */
124 	u_quad_t ifs6_in_truncated;	/* # of truncated datagrams */
125 	u_quad_t ifs6_in_discard;	/* # of discarded datagrams */
126 					/* NOTE: fragment timeout is not here */
127 	u_quad_t ifs6_in_deliver;	/* # of datagrams delivered to ULP */
128 					/* NOTE: increment on final dst if */
129 	u_quad_t ifs6_out_forward;	/* # of datagrams forwarded */
130 					/* NOTE: increment on outgoing if */
131 	u_quad_t ifs6_out_request;	/* # of outgoing datagrams from ULP */
132 					/* NOTE: does not include forwrads */
133 	u_quad_t ifs6_out_discard;	/* # of discarded datagrams */
134 	u_quad_t ifs6_out_fragok;	/* # of datagrams fragmented */
135 	u_quad_t ifs6_out_fragfail;	/* # of datagrams failed on fragment */
136 	u_quad_t ifs6_out_fragcreat;	/* # of fragment datagrams */
137 					/* NOTE: this is # after fragment */
138 	u_quad_t ifs6_reass_reqd;	/* # of incoming fragmented packets */
139 					/* NOTE: increment on final dst if */
140 	u_quad_t ifs6_reass_ok;		/* # of reassembled packets */
141 					/* NOTE: this is # after reass */
142 					/* NOTE: increment on final dst if */
143 	u_quad_t ifs6_reass_fail;	/* # of reass failures */
144 					/* NOTE: may not be packet count */
145 					/* NOTE: increment on final dst if */
146 	u_quad_t ifs6_in_mcast;		/* # of inbound multicast datagrams */
147 	u_quad_t ifs6_out_mcast;	/* # of outbound multicast datagrams */
148 };
149 
150 /*
151  * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
152  * XXX: I'm not sure if this file is the right place for this structure...
153  */
154 struct icmp6_ifstat {
155 	/*
156 	 * Input statistics
157 	 */
158 	/* ipv6IfIcmpInMsgs, total # of input messages */
159 	u_quad_t ifs6_in_msg;
160 	/* ipv6IfIcmpInErrors, # of input error messages */
161 	u_quad_t ifs6_in_error;
162 	/* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
163 	u_quad_t ifs6_in_dstunreach;
164 	/* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
165 	u_quad_t ifs6_in_adminprohib;
166 	/* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
167 	u_quad_t ifs6_in_timeexceed;
168 	/* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
169 	u_quad_t ifs6_in_paramprob;
170 	/* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
171 	u_quad_t ifs6_in_pkttoobig;
172 	/* ipv6IfIcmpInEchos, # of input echo requests */
173 	u_quad_t ifs6_in_echo;
174 	/* ipv6IfIcmpInEchoReplies, # of input echo replies */
175 	u_quad_t ifs6_in_echoreply;
176 	/* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
177 	u_quad_t ifs6_in_routersolicit;
178 	/* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
179 	u_quad_t ifs6_in_routeradvert;
180 	/* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
181 	u_quad_t ifs6_in_neighborsolicit;
182 	/* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
183 	u_quad_t ifs6_in_neighboradvert;
184 	/* ipv6IfIcmpInRedirects, # of input redirects */
185 	u_quad_t ifs6_in_redirect;
186 	/* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
187 	u_quad_t ifs6_in_mldquery;
188 	/* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
189 	u_quad_t ifs6_in_mldreport;
190 	/* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
191 	u_quad_t ifs6_in_mlddone;
192 
193 	/*
194 	 * Output statistics. We should solve unresolved routing problem...
195 	 */
196 	/* ipv6IfIcmpOutMsgs, total # of output messages */
197 	u_quad_t ifs6_out_msg;
198 	/* ipv6IfIcmpOutErrors, # of output error messages */
199 	u_quad_t ifs6_out_error;
200 	/* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
201 	u_quad_t ifs6_out_dstunreach;
202 	/* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
203 	u_quad_t ifs6_out_adminprohib;
204 	/* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
205 	u_quad_t ifs6_out_timeexceed;
206 	/* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
207 	u_quad_t ifs6_out_paramprob;
208 	/* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
209 	u_quad_t ifs6_out_pkttoobig;
210 	/* ipv6IfIcmpOutEchos, # of output echo requests */
211 	u_quad_t ifs6_out_echo;
212 	/* ipv6IfIcmpOutEchoReplies, # of output echo replies */
213 	u_quad_t ifs6_out_echoreply;
214 	/* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
215 	u_quad_t ifs6_out_routersolicit;
216 	/* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
217 	u_quad_t ifs6_out_routeradvert;
218 	/* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
219 	u_quad_t ifs6_out_neighborsolicit;
220 	/* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
221 	u_quad_t ifs6_out_neighboradvert;
222 	/* ipv6IfIcmpOutRedirects, # of output redirects */
223 	u_quad_t ifs6_out_redirect;
224 	/* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
225 	u_quad_t ifs6_out_mldquery;
226 	/* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
227 	u_quad_t ifs6_out_mldreport;
228 	/* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
229 	u_quad_t ifs6_out_mlddone;
230 };
231 
232 struct	in6_ifreq {
233 	char	ifr_name[IFNAMSIZ];
234 	union {
235 		struct	sockaddr_in6 ifru_addr;
236 		struct	sockaddr_in6 ifru_dstaddr;
237 		short	ifru_flags;
238 		int	ifru_flags6;
239 		int	ifru_metric;
240 		caddr_t	ifru_data;
241 		struct in6_addrlifetime ifru_lifetime;
242 		struct in6_ifstat ifru_stat;
243 		struct icmp6_ifstat ifru_icmp6stat;
244 		u_int32_t ifru_scope_id[16];
245 	} ifr_ifru;
246 };
247 
248 struct	in6_aliasreq {
249 	char	ifra_name[IFNAMSIZ];
250 	struct	sockaddr_in6 ifra_addr;
251 	struct	sockaddr_in6 ifra_dstaddr;
252 	struct	sockaddr_in6 ifra_prefixmask;
253 	int	ifra_flags;
254 	struct in6_addrlifetime ifra_lifetime;
255 };
256 
257 /* prefix type macro */
258 #define IN6_PREFIX_ND	1
259 #define IN6_PREFIX_RR	2
260 
261 /*
262  * prefix related flags passed between kernel(NDP related part) and
263  * user land command(ifconfig) and daemon(rtadvd).
264  */
265 struct in6_prflags {
266 	struct prf_ra {
267 		u_char onlink : 1;
268 		u_char autonomous : 1;
269 		u_char reserved : 6;
270 	} prf_ra;
271 	u_char prf_reserved1;
272 	u_short prf_reserved2;
273 	/* want to put this on 4byte offset */
274 	struct prf_rr {
275 		u_char decrvalid : 1;
276 		u_char decrprefd : 1;
277 		u_char reserved : 6;
278 	} prf_rr;
279 	u_char prf_reserved3;
280 	u_short prf_reserved4;
281 };
282 
283 struct  in6_prefixreq {
284 	char	ipr_name[IFNAMSIZ];
285 	u_char	ipr_origin;
286 	u_char	ipr_plen;
287 	u_int32_t ipr_vltime;
288 	u_int32_t ipr_pltime;
289 	struct in6_prflags ipr_flags;
290 	struct	sockaddr_in6 ipr_prefix;
291 };
292 
293 #define PR_ORIG_RA	0
294 #define PR_ORIG_RR	1
295 #define PR_ORIG_STATIC	2
296 #define PR_ORIG_KERNEL	3
297 
298 #define ipr_raf_onlink		ipr_flags.prf_ra.onlink
299 #define ipr_raf_auto		ipr_flags.prf_ra.autonomous
300 
301 #define ipr_statef_onlink	ipr_flags.prf_state.onlink
302 
303 #define ipr_rrf_decrvalid	ipr_flags.prf_rr.decrvalid
304 #define ipr_rrf_decrprefd	ipr_flags.prf_rr.decrprefd
305 
306 struct	in6_rrenumreq {
307 	char	irr_name[IFNAMSIZ];
308 	u_char	irr_origin;
309 	u_char	irr_m_len;	/* match len for matchprefix */
310 	u_char	irr_m_minlen;	/* minlen for matching prefix */
311 	u_char	irr_m_maxlen;	/* maxlen for matching prefix */
312 	u_char	irr_u_uselen;	/* uselen for adding prefix */
313 	u_char	irr_u_keeplen;	/* keeplen from matching prefix */
314 	struct irr_raflagmask {
315 		u_char onlink : 1;
316 		u_char autonomous : 1;
317 		u_char reserved : 6;
318 	} irr_raflagmask;
319 	u_int32_t irr_vltime;
320 	u_int32_t irr_pltime;
321 	struct in6_prflags irr_flags;
322 	struct	sockaddr_in6 irr_matchprefix;
323 	struct	sockaddr_in6 irr_useprefix;
324 };
325 
326 #define irr_raf_mask_onlink	irr_raflagmask.onlink
327 #define irr_raf_mask_auto	irr_raflagmask.autonomous
328 #define irr_raf_mask_reserved	irr_raflagmask.reserved
329 
330 #define irr_raf_onlink		irr_flags.prf_ra.onlink
331 #define irr_raf_auto		irr_flags.prf_ra.autonomous
332 
333 #define irr_statef_onlink	irr_flags.prf_state.onlink
334 
335 #define irr_rrf			irr_flags.prf_rr
336 #define irr_rrf_decrvalid	irr_flags.prf_rr.decrvalid
337 #define irr_rrf_decrprefd	irr_flags.prf_rr.decrprefd
338 
339 /*
340  * Given a pointer to an in6_ifaddr (ifaddr),
341  * return a pointer to the addr as a sockaddr_in6
342  */
343 #define IA6_IN6(ia)	(&((ia)->ia_addr.sin6_addr))
344 #define IA6_DSTIN6(ia)	(&((ia)->ia_dstaddr.sin6_addr))
345 #define IA6_MASKIN6(ia)	(&((ia)->ia_prefixmask.sin6_addr))
346 #define IA6_SIN6(ia)	(&((ia)->ia_addr))
347 #define IA6_DSTSIN6(ia)	(&((ia)->ia_dstaddr))
348 #define IFA_IN6(x)	(&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
349 #define IFA_DSTIN6(x)	(&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
350 
351 #define IFPR_IN6(x)	(&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
352 
353 #ifdef _KERNEL
354 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m)	(	\
355 	(((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
356 	(((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
357 	(((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
358 	(((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
359 #endif
360 
361 #define SIOCSIFADDR_IN6		 _IOW('i', 12, struct in6_ifreq)
362 #define SIOCGIFADDR_IN6		_IOWR('i', 33, struct in6_ifreq)
363 
364 #ifdef _KERNEL
365 /*
366  * SIOCSxxx ioctls should be unused (see comments in in6.c), but
367  * we do not shift numbers for binary compatibility.
368  */
369 #define SIOCSIFDSTADDR_IN6	 _IOW('i', 14, struct in6_ifreq)
370 #define SIOCSIFNETMASK_IN6	 _IOW('i', 22, struct in6_ifreq)
371 #endif
372 
373 #define SIOCGIFDSTADDR_IN6	_IOWR('i', 34, struct in6_ifreq)
374 #define SIOCGIFNETMASK_IN6	_IOWR('i', 37, struct in6_ifreq)
375 
376 #define SIOCDIFADDR_IN6		 _IOW('i', 25, struct in6_ifreq)
377 #define SIOCAIFADDR_IN6		 _IOW('i', 26, struct in6_aliasreq)
378 
379 #define SIOCSIFPHYADDR_IN6       _IOW('i', 70, struct in6_aliasreq)
380 #define	SIOCGIFPSRCADDR_IN6	_IOWR('i', 71, struct in6_ifreq)
381 #define	SIOCGIFPDSTADDR_IN6	_IOWR('i', 72, struct in6_ifreq)
382 
383 #define SIOCGIFAFLAG_IN6	_IOWR('i', 73, struct in6_ifreq)
384 
385 #define SIOCGDRLST_IN6		_IOWR('i', 74, struct in6_drlist)
386 #define SIOCGPRLST_IN6		_IOWR('i', 75, struct in6_prlist)
387 #ifdef _KERNEL
388 #define OSIOCGIFINFO_IN6	_IOWR('i', 76, struct in6_ondireq)
389 #endif
390 #define SIOCGIFINFO_IN6		_IOWR('i', 108, struct in6_ndireq)
391 #define SIOCSNDFLUSH_IN6	_IOWR('i', 77, struct in6_ifreq)
392 #define SIOCGNBRINFO_IN6	_IOWR('i', 78, struct in6_nbrinfo)
393 #define SIOCSPFXFLUSH_IN6	_IOWR('i', 79, struct in6_ifreq)
394 #define SIOCSRTRFLUSH_IN6	_IOWR('i', 80, struct in6_ifreq)
395 
396 #define SIOCGIFALIFETIME_IN6	_IOWR('i', 81, struct in6_ifreq)
397 #define SIOCSIFALIFETIME_IN6	_IOWR('i', 82, struct in6_ifreq)
398 #define SIOCGIFSTAT_IN6		_IOWR('i', 83, struct in6_ifreq)
399 #define SIOCGIFSTAT_ICMP6	_IOWR('i', 84, struct in6_ifreq)
400 
401 #define SIOCSDEFIFACE_IN6	_IOWR('i', 85, struct in6_ndifreq)
402 #define SIOCGDEFIFACE_IN6	_IOWR('i', 86, struct in6_ndifreq)
403 
404 #define SIOCSIFINFO_FLAGS	_IOWR('i', 87, struct in6_ndireq) /* XXX */
405 
406 #define SIOCSSCOPE6		_IOW('i', 88, struct in6_ifreq)
407 #define SIOCGSCOPE6		_IOWR('i', 89, struct in6_ifreq)
408 #define SIOCGSCOPE6DEF		_IOWR('i', 90, struct in6_ifreq)
409 
410 #define SIOCSIFPREFIX_IN6	_IOW('i', 100, struct in6_prefixreq) /* set */
411 #define SIOCGIFPREFIX_IN6	_IOWR('i', 101, struct in6_prefixreq) /* get */
412 #define SIOCDIFPREFIX_IN6	_IOW('i', 102, struct in6_prefixreq) /* del */
413 #define SIOCAIFPREFIX_IN6	_IOW('i', 103, struct in6_rrenumreq) /* add */
414 #define SIOCCIFPREFIX_IN6	_IOW('i', 104, \
415 				     struct in6_rrenumreq) /* change */
416 #define SIOCSGIFPREFIX_IN6	_IOW('i', 105, \
417 				     struct in6_rrenumreq) /* set global */
418 
419 #define SIOCGETSGCNT_IN6	_IOWR('u', 106, \
420 				      struct sioc_sg_req6) /* get s,g pkt cnt */
421 #define SIOCGETMIFCNT_IN6	_IOWR('u', 107, \
422 				      struct sioc_mif_req6) /* get pkt cnt per if */
423 
424 #define IN6_IFF_ANYCAST		0x01	/* anycast address */
425 #define IN6_IFF_TENTATIVE	0x02	/* tentative address */
426 #define IN6_IFF_DUPLICATED	0x04	/* DAD detected duplicate */
427 #define IN6_IFF_DETACHED	0x08	/* may be detached from the link */
428 #define IN6_IFF_DEPRECATED	0x10	/* deprecated address */
429 #define IN6_IFF_NODAD		0x20	/* don't perform DAD on this address
430 					 * (used only at first SIOC* call)
431 					 */
432 #define IN6_IFF_AUTOCONF	0x40	/* autoconfigurable address. */
433 #define IN6_IFF_TEMPORARY	0x80	/* temporary (anonymous) address. */
434 #define IN6_IFF_NOPFX		0x8000	/* skip kernel prefix management.
435 					 * XXX: this should be temporary.
436 					 */
437 
438 /* do not input/output */
439 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
440 
441 #ifdef _KERNEL
442 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
443 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
444 #endif
445 
446 #ifdef _KERNEL
447 extern struct in6_ifaddr *in6_ifaddr;
448 
449 extern struct in6_ifstat **in6_ifstat;
450 extern size_t in6_ifstatmax;
451 extern struct icmp6stat icmp6stat;
452 extern struct icmp6_ifstat **icmp6_ifstat;
453 extern size_t icmp6_ifstatmax;
454 #define in6_ifstat_inc(ifp, tag) \
455 do {								\
456 	if ((ifp) && (ifp)->if_index <= if_index		\
457 	 && (ifp)->if_index < in6_ifstatmax			\
458 	 && in6_ifstat && in6_ifstat[(ifp)->if_index]) {	\
459 		in6_ifstat[(ifp)->if_index]->tag++;		\
460 	}							\
461 } while (0)
462 
463 extern struct ifqueue ip6intrq;		/* IP6 packet input queue */
464 extern struct in6_addr zeroin6_addr;
465 extern u_char inet6ctlerrmap[];
466 extern unsigned long in6_maxmtu;
467 #ifdef MALLOC_DECLARE
468 MALLOC_DECLARE(M_IPMADDR);
469 #endif
470 
471 /*
472  * Macro for finding the internet address structure (in6_ifaddr) corresponding
473  * to a given interface (ifnet structure).
474  */
475 
476 #define IFP_TO_IA6(ifp, ia)				\
477 /* struct ifnet *ifp; */				\
478 /* struct in6_ifaddr *ia; */				\
479 do {									\
480 	struct ifaddr *ifa;						\
481 	for (ifa = (ifp)->if_addrlist.tqh_first; ifa; ifa = ifa->ifa_list.tqe_next) {	\
482 		if (!ifa->ifa_addr)					\
483 			continue;					\
484 		if (ifa->ifa_addr->sa_family == AF_INET6)		\
485 			break;						\
486 	}								\
487 	(ia) = (struct in6_ifaddr *)ifa;				\
488 } while (0)
489 
490 #endif /* _KERNEL */
491 
492 /*
493  * Multi-cast membership entry.  One for each group/ifp that a PCB
494  * belongs to.
495  */
496 struct in6_multi_mship {
497 	struct	in6_multi *i6mm_maddr;	/* Multicast address pointer */
498 	LIST_ENTRY(in6_multi_mship) i6mm_chain;  /* multicast options chain */
499 };
500 
501 struct	in6_multi {
502 	LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
503 	struct	in6_addr in6m_addr;	/* IP6 multicast address */
504 	struct	ifnet *in6m_ifp;	/* back pointer to ifnet */
505 	struct	ifmultiaddr *in6m_ifma;	/* back pointer to ifmultiaddr */
506 	u_int	in6m_refcount;		/* # membership claims by sockets */
507 	u_int	in6m_state;		/* state of the membership */
508 	u_int	in6m_timer;		/* MLD6 listener report timer */
509 };
510 
511 #ifdef _KERNEL
512 extern LIST_HEAD(in6_multihead, in6_multi) in6_multihead;
513 
514 /*
515  * Structure used by macros below to remember position when stepping through
516  * all of the in6_multi records.
517  */
518 struct	in6_multistep {
519 	struct	in6_ifaddr *i_ia;
520 	struct	in6_multi *i_in6m;
521 };
522 
523 /*
524  * Macros for looking up the in6_multi record for a given IP6 multicast
525  * address on a given interface. If no matching record is found, "in6m"
526  * returns NLL.
527  */
528 
529 #define IN6_LOOKUP_MULTI(addr, ifp, in6m)			\
530 /* struct in6_addr addr; */					\
531 /* struct ifnet *ifp; */					\
532 /* struct in6_multi *in6m; */					\
533 do { \
534 	struct ifmultiaddr *ifma; \
535 	TAILQ_FOREACH(ifma, &(ifp)->if_multiaddrs, ifma_link) { \
536 		if (ifma->ifma_addr->sa_family == AF_INET6 \
537 		    && IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)ifma->ifma_addr)->sin6_addr, \
538 					  &(addr))) \
539 			break; \
540 	} \
541 	(in6m) = (struct in6_multi *)(ifma ? ifma->ifma_protospec : 0); \
542 } while(0)
543 
544 /*
545  * Macro to step through all of the in6_multi records, one at a time.
546  * The current position is remembered in "step", which the caller must
547  * provide.  IN6_FIRST_MULTI(), below, must be called to initialize "step"
548  * and get the first record.  Both macros return a NULL "in6m" when there
549  * are no remaining records.
550  */
551 #define IN6_NEXT_MULTI(step, in6m)					\
552 /* struct in6_multistep step; */					\
553 /* struct in6_multi *in6m; */						\
554 do { \
555 	if (((in6m) = (step).i_in6m) != NULL) \
556 		(step).i_in6m = (step).i_in6m->in6m_entry.le_next; \
557 } while(0)
558 
559 #define IN6_FIRST_MULTI(step, in6m)		\
560 /* struct in6_multistep step; */		\
561 /* struct in6_multi *in6m */			\
562 do { \
563 	(step).i_in6m = in6_multihead.lh_first; \
564 		IN6_NEXT_MULTI((step), (in6m)); \
565 } while(0)
566 
567 struct	in6_multi *in6_addmulti __P((struct in6_addr *, struct ifnet *,
568 				     int *));
569 void	in6_delmulti __P((struct in6_multi *));
570 extern int in6_ifindex2scopeid __P((int));
571 extern int in6_mask2len __P((struct in6_addr *, u_char *));
572 extern void in6_len2mask __P((struct in6_addr *, int));
573 int	in6_control __P((struct socket *,
574 			 u_long, caddr_t, struct ifnet *, struct thread *));
575 int	in6_update_ifa __P((struct ifnet *, struct in6_aliasreq *,
576 			    struct in6_ifaddr *));
577 void	in6_purgeaddr __P((struct ifaddr *));
578 int	in6if_do_dad __P((struct ifnet *));
579 void	in6_purgeif __P((struct ifnet *));
580 void	in6_savemkludge __P((struct in6_ifaddr *));
581 void	in6_setmaxmtu   __P((void));
582 void	in6_restoremkludge __P((struct in6_ifaddr *, struct ifnet *));
583 void	in6_purgemkludge __P((struct ifnet *));
584 struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *, int));
585 struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *,
586 					     struct in6_addr *));
587 char	*ip6_sprintf __P((const struct in6_addr *));
588 int	in6_addr2scopeid __P((struct ifnet *, struct in6_addr *));
589 int	in6_matchlen __P((struct in6_addr *, struct in6_addr *));
590 int	in6_are_prefix_equal __P((struct in6_addr *p1, struct in6_addr *p2,
591 				  int len));
592 void	in6_prefixlen2mask __P((struct in6_addr *maskp, int len));
593 int	in6_prefix_ioctl __P((struct socket *so, u_long cmd, caddr_t data,
594 			      struct ifnet *ifp));
595 int	in6_prefix_add_ifid __P((int iilen, struct in6_ifaddr *ia));
596 void	in6_prefix_remove_ifid __P((int iilen, struct in6_ifaddr *ia));
597 void	in6_purgeprefix __P((struct ifnet *));
598 
599 int	in6_is_addr_deprecated __P((struct sockaddr_in6 *));
600 struct inpcb;
601 int in6_embedscope __P((struct in6_addr *, const struct sockaddr_in6 *,
602 	struct inpcb *, struct ifnet **));
603 int in6_recoverscope __P((struct sockaddr_in6 *, const struct in6_addr *,
604 	struct ifnet *));
605 void in6_clearscope __P((struct in6_addr *));
606 #endif /* _KERNEL */
607 
608 #endif /* _NETINET6_IN6_VAR_H_ */
609