1 /* $OpenBSD: in6_var.h,v 1.78 2022/11/23 07:57:39 kn Exp $ */
2 /* $KAME: in6_var.h,v 1.55 2001/02/16 12:49:45 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. 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_var.h 8.1 (Berkeley) 6/10/93
62 */
63
64 #ifndef _NETINET6_IN6_VAR_H_
65 #define _NETINET6_IN6_VAR_H_
66
67 /*
68 * Interface address, Internet version. One of these structures
69 * is allocated for each interface with an Internet address.
70 * The ifaddr structure contains the protocol-independent part
71 * of the structure and is assumed to be first.
72 */
73
74 /*
75 * pltime/vltime are just for future reference (required to implements 2
76 * hour rule for hosts). they should never be modified by nd6_timeout or
77 * anywhere else.
78 * userland -> kernel: accept pltime/vltime
79 * kernel -> userland: throw up everything
80 * in kernel: modify preferred/expire only
81 */
82 struct in6_addrlifetime {
83 time_t ia6t_expire; /* valid lifetime expiration time */
84 time_t ia6t_preferred; /* preferred lifetime expiration time */
85 u_int32_t ia6t_vltime; /* valid lifetime */
86 u_int32_t ia6t_pltime; /* prefix lifetime */
87 };
88
89 #ifdef _KERNEL
90 struct in6_ifaddr {
91 struct ifaddr ia_ifa; /* protocol-independent info */
92 #define ia_ifp ia_ifa.ifa_ifp
93 #define ia_flags ia_ifa.ifa_flags
94
95 struct sockaddr_in6 ia_addr; /* interface address */
96 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */
97 struct sockaddr_in6 ia_prefixmask; /* prefix mask */
98 TAILQ_ENTRY(in6_ifaddr) ia_list; /* list of IP6 addresses */
99 int ia6_flags;
100
101 struct in6_addrlifetime ia6_lifetime;
102 time_t ia6_updatetime;
103
104 /* multicast addresses joined from the kernel */
105 LIST_HEAD(, in6_multi_mship) ia6_memberships;
106 };
107 #endif /* _KERNEL */
108
109 /*
110 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
111 */
112 struct in6_ifstat {
113 u_int64_t ifs6_in_receive; /* # of total input datagram */
114 u_int64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */
115 u_int64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */
116 u_int64_t ifs6_in_noroute; /* # of datagrams with no route */
117 u_int64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */
118 u_int64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */
119 /* NOTE: increment on final dst if */
120 u_int64_t ifs6_in_truncated; /* # of truncated datagrams */
121 u_int64_t ifs6_in_discard; /* # of discarded datagrams */
122 /* NOTE: fragment timeout is not here */
123 u_int64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */
124 /* NOTE: increment on final dst if */
125 u_int64_t ifs6_out_forward; /* # of datagrams forwarded */
126 /* NOTE: increment on outgoing if */
127 u_int64_t ifs6_out_request; /* # of outgoing datagrams from ULP */
128 /* NOTE: does not include forwards */
129 u_int64_t ifs6_out_discard; /* # of discarded datagrams */
130 u_int64_t ifs6_out_fragok; /* # of datagrams fragmented */
131 u_int64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */
132 u_int64_t ifs6_out_fragcreat; /* # of fragment datagrams */
133 /* NOTE: this is # after fragment */
134 u_int64_t ifs6_reass_reqd; /* # of incoming fragmented packets */
135 /* NOTE: increment on final dst if */
136 u_int64_t ifs6_reass_ok; /* # of reassembled packets */
137 /* NOTE: this is # after reass */
138 /* NOTE: increment on final dst if */
139 u_int64_t ifs6_reass_fail; /* # of reass failures */
140 /* NOTE: may not be packet count */
141 /* NOTE: increment on final dst if */
142 u_int64_t ifs6_in_mcast; /* # of inbound multicast datagrams */
143 u_int64_t ifs6_out_mcast; /* # of outbound multicast datagrams */
144 };
145
146 /*
147 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
148 * XXX: I'm not sure if this file is the right place for this structure...
149 */
150 struct icmp6_ifstat {
151 /*
152 * Input statistics
153 */
154 /* ipv6IfIcmpInMsgs, total # of input messages */
155 u_int64_t ifs6_in_msg;
156 /* ipv6IfIcmpInErrors, # of input error messages */
157 u_int64_t ifs6_in_error;
158 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
159 u_int64_t ifs6_in_dstunreach;
160 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
161 u_int64_t ifs6_in_adminprohib;
162 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
163 u_int64_t ifs6_in_timeexceed;
164 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
165 u_int64_t ifs6_in_paramprob;
166 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
167 u_int64_t ifs6_in_pkttoobig;
168 /* ipv6IfIcmpInEchos, # of input echo requests */
169 u_int64_t ifs6_in_echo;
170 /* ipv6IfIcmpInEchoReplies, # of input echo replies */
171 u_int64_t ifs6_in_echoreply;
172 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
173 u_int64_t ifs6_in_routersolicit;
174 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
175 u_int64_t ifs6_in_routeradvert;
176 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
177 u_int64_t ifs6_in_neighborsolicit;
178 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
179 u_int64_t ifs6_in_neighboradvert;
180 /* ipv6IfIcmpInRedirects, # of input redirects */
181 u_int64_t ifs6_in_redirect;
182 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
183 u_int64_t ifs6_in_mldquery;
184 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
185 u_int64_t ifs6_in_mldreport;
186 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
187 u_int64_t ifs6_in_mlddone;
188
189 /*
190 * Output statistics. We should solve unresolved routing problem...
191 */
192 /* ipv6IfIcmpOutMsgs, total # of output messages */
193 u_int64_t ifs6_out_msg;
194 /* ipv6IfIcmpOutErrors, # of output error messages */
195 u_int64_t ifs6_out_error;
196 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
197 u_int64_t ifs6_out_dstunreach;
198 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
199 u_int64_t ifs6_out_adminprohib;
200 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
201 u_int64_t ifs6_out_timeexceed;
202 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
203 u_int64_t ifs6_out_paramprob;
204 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
205 u_int64_t ifs6_out_pkttoobig;
206 /* ipv6IfIcmpOutEchos, # of output echo requests */
207 u_int64_t ifs6_out_echo;
208 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
209 u_int64_t ifs6_out_echoreply;
210 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
211 u_int64_t ifs6_out_routersolicit;
212 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
213 u_int64_t ifs6_out_routeradvert;
214 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
215 u_int64_t ifs6_out_neighborsolicit;
216 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
217 u_int64_t ifs6_out_neighboradvert;
218 /* ipv6IfIcmpOutRedirects, # of output redirects */
219 u_int64_t ifs6_out_redirect;
220 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
221 u_int64_t ifs6_out_mldquery;
222 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
223 u_int64_t ifs6_out_mldreport;
224 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
225 u_int64_t ifs6_out_mlddone;
226 };
227
228 struct in6_ifreq {
229 char ifr_name[IFNAMSIZ];
230 union {
231 struct sockaddr_in6 ifru_addr;
232 struct sockaddr_in6 ifru_dstaddr;
233 short ifru_flags;
234 int ifru_flags6;
235 int ifru_metric;
236 caddr_t ifru_data;
237 struct in6_addrlifetime ifru_lifetime;
238 struct in6_ifstat ifru_stat;
239 struct icmp6_ifstat ifru_icmp6stat;
240 } ifr_ifru;
241 };
242
243 struct in6_aliasreq {
244 char ifra_name[IFNAMSIZ];
245 union {
246 struct sockaddr_in6 ifrau_addr;
247 int ifrau_align;
248 } ifra_ifrau;
249 #ifndef ifra_addr
250 #define ifra_addr ifra_ifrau.ifrau_addr
251 #endif
252 struct sockaddr_in6 ifra_dstaddr;
253 struct sockaddr_in6 ifra_prefixmask;
254 int ifra_flags;
255 struct in6_addrlifetime ifra_lifetime;
256 };
257
258 /*
259 * Given a pointer to an in6_ifaddr (ifaddr),
260 * return a pointer to the addr as a sockaddr_in6
261 */
262 #define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr))
263 #define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr))
264 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
265 #define IA6_SIN6(ia) (&((ia)->ia_addr))
266 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
267 #define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
268 #define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
269
270 #define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq)
271 #define SIOCAIFADDR_IN6 _IOW('i', 26, struct in6_aliasreq)
272
273 #define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq)
274 #define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq)
275
276 #define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq)
277
278 #define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq)
279 #define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo)
280
281 #define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq)
282
283 #define SIOCGETSGCNT_IN6 _IOWR('u', 106, struct sioc_sg_req6)
284 #define SIOCGETMIFCNT_IN6 _IOWR('u', 107, struct sioc_mif_req6)
285
286 #define IN6_IFF_ANYCAST 0x01 /* anycast address */
287 #define IN6_IFF_TENTATIVE 0x02 /* tentative address */
288 #define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */
289 #define IN6_IFF_DETACHED 0x08 /* may be detached from the link */
290 #define IN6_IFF_DEPRECATED 0x10 /* deprecated address */
291 #define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */
292 #define IN6_IFF_TEMPORARY 0x80 /* RFC 4941 temporary address */
293
294 #ifdef _KERNEL
295 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \
296 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
297 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
298 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
299 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
300
301 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
302 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
303
304 /*
305 * Multi-cast membership entry. One for each group/ifp that a PCB
306 * belongs to.
307 */
308 struct in6_multi_mship {
309 struct in6_multi *i6mm_maddr; /* Multicast address pointer */
310 LIST_ENTRY(in6_multi_mship) i6mm_chain; /* multicast options chain */
311 };
312
313 struct in6_multi {
314 struct ifmaddr in6m_ifma; /* Protocol-independent info */
315 #define in6m_refcnt in6m_ifma.ifma_refcnt
316 #define in6m_ifidx in6m_ifma.ifma_ifidx
317
318 struct sockaddr_in6 in6m_sin; /* IPv6 multicast address */
319 #define in6m_addr in6m_sin.sin6_addr
320
321 u_int in6m_state; /* state of membership */
322 u_int in6m_timer; /* MLD6 membership report timer */
323 };
324
325 static __inline struct in6_multi *
326 ifmatoin6m(struct ifmaddr *ifma)
327 {
328 return ((struct in6_multi *)(ifma));
329 }
330
331 /*
332 * Macros for looking up the in6_multi record for a given IP6 multicast
333 * address on a given interface. If no matching record is found, "in6m"
334 * returns NULL.
335 */
336 #define IN6_LOOKUP_MULTI(addr, ifp, in6m) \
337 /* struct in6_addr addr; */ \
338 /* struct ifnet *ifp; */ \
339 /* struct in6_multi *in6m; */ \
340 do { \
341 struct ifmaddr *ifma; \
342 \
343 (in6m) = NULL; \
344 TAILQ_FOREACH(ifma, &(ifp)->if_maddrlist, ifma_list) \
345 if (ifma->ifma_addr->sa_family == AF_INET6 && \
346 IN6_ARE_ADDR_EQUAL(&ifmatoin6m(ifma)->in6m_addr, \
347 &(addr))) { \
348 (in6m) = ifmatoin6m(ifma); \
349 break; \
350 } \
351 } while (/* CONSTCOND */ 0)
352
353 struct in6_multi *in6_addmulti(struct in6_addr *, struct ifnet *, int *);
354 void in6_delmulti(struct in6_multi *);
355 int in6_hasmulti(struct in6_addr *, struct ifnet *);
356 struct in6_multi_mship *in6_joingroup(struct ifnet *, struct in6_addr *, int *);
357 void in6_leavegroup(struct in6_multi_mship *);
358 int in6_control(struct socket *, u_long, caddr_t, struct ifnet *);
359 int in6_ioctl(u_long, caddr_t, struct ifnet *, int);
360 int in6_update_ifa(struct ifnet *, struct in6_aliasreq *,
361 struct in6_ifaddr *);
362 void in6_purgeaddr(struct ifaddr *);
363 int in6if_do_dad(struct ifnet *);
364 void *in6_domifattach(struct ifnet *);
365 void in6_domifdetach(struct ifnet *, void *);
366 struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int);
367 struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, struct in6_addr *);
368 int in6_addr2scopeid(unsigned int, struct in6_addr *);
369 int in6_matchlen(struct in6_addr *, struct in6_addr *);
370 void in6_prefixlen2mask(struct in6_addr *, int);
371 void in6_purgeprefix(struct ifnet *);
372 #endif /* _KERNEL */
373
374 #endif /* _NETINET6_IN6_VAR_H_ */
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