1 /* $OpenBSD: in6.h,v 1.119 2024/09/01 03:09:00 jsg 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 78 /* 79 * IPv6 address 80 */ 81 struct in6_addr { 82 union { 83 u_int8_t __u6_addr8[16]; 84 u_int16_t __u6_addr16[8]; 85 u_int32_t __u6_addr32[4]; 86 } __u6_addr; /* 128-bit IP6 address */ 87 }; 88 89 #define s6_addr __u6_addr.__u6_addr8 90 #ifdef _KERNEL /* XXX nonstandard */ 91 #define s6_addr8 __u6_addr.__u6_addr8 92 #define s6_addr16 __u6_addr.__u6_addr16 93 #define s6_addr32 __u6_addr.__u6_addr32 94 #endif 95 96 #ifndef INET6_ADDRSTRLEN 97 #define INET6_ADDRSTRLEN 46 98 #endif 99 100 /* 101 * Socket address for IPv6 102 */ 103 #if __BSD_VISIBLE 104 #define SIN6_LEN /* Indicates sockaddr_in6 has a sin6_len field */ 105 #endif /* __BSD_VISIBLE */ 106 struct sockaddr_in6 { 107 u_int8_t sin6_len; /* length of this struct(sa_family_t)*/ 108 sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */ 109 in_port_t sin6_port; /* Transport layer port # (in_port_t)*/ 110 u_int32_t sin6_flowinfo; /* IP6 flow information */ 111 struct in6_addr sin6_addr; /* IP6 address */ 112 u_int32_t sin6_scope_id; /* intface scope id */ 113 }; 114 115 116 /* 117 * Local definition for masks 118 */ 119 #ifdef _KERNEL /* XXX nonstandard */ 120 #define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}} 121 #define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \ 122 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 123 #define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 124 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 125 #define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 126 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}} 127 #define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \ 128 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}} 129 130 extern const struct sockaddr_in6 sa6_any; 131 132 extern const struct in6_addr in6mask0; 133 extern const struct in6_addr in6mask32; 134 extern const struct in6_addr in6mask64; 135 extern const struct in6_addr in6mask96; 136 extern const struct in6_addr in6mask128; 137 #endif /* _KERNEL */ 138 139 /* Both kernel and libc define these for use */ 140 extern const struct in6_addr in6addr_any; 141 extern const struct in6_addr in6addr_loopback; 142 extern const struct in6_addr in6addr_intfacelocal_allnodes; 143 extern const struct in6_addr in6addr_linklocal_allnodes; 144 extern const struct in6_addr in6addr_linklocal_allrouters; 145 146 #if __BSD_VISIBLE 147 /* 148 * Definition of some useful macros to handle IP6 addresses 149 */ 150 #define IN6ADDR_ANY_INIT \ 151 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 152 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}} 153 #define IN6ADDR_LOOPBACK_INIT \ 154 {{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 155 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 156 #define IN6ADDR_NODELOCAL_ALLNODES_INIT \ 157 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 158 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 159 #define IN6ADDR_INTFACELOCAL_ALLNODES_INIT \ 160 {{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 161 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 162 #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \ 163 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 164 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}} 165 #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \ 166 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 167 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}} 168 169 #define IN6_ARE_ADDR_EQUAL(a, b) \ 170 (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0) 171 172 #endif /* __BSD_VISIBLE */ 173 174 /* 175 * Macros started with IPV6_ADDR is KAME local 176 */ 177 #define __IPV6_ADDR_INT32_ONE htonl(1) 178 #define __IPV6_ADDR_INT32_TWO htonl(2) 179 #define __IPV6_ADDR_INT32_MNL htonl(0xff010000) 180 #define __IPV6_ADDR_INT32_MLL htonl(0xff020000) 181 #define __IPV6_ADDR_INT32_SMP htonl(0x0000ffff) 182 #define __IPV6_ADDR_INT16_ULL htons(0xfe80) 183 #define __IPV6_ADDR_INT16_USL htons(0xfec0) 184 #define __IPV6_ADDR_INT16_MLL htons(0xff02) 185 186 /* 187 * Unspecified 188 */ 189 #define IN6_IS_ADDR_UNSPECIFIED(a) \ 190 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 191 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 192 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 193 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == 0)) 194 195 /* 196 * Loopback 197 */ 198 #define IN6_IS_ADDR_LOOPBACK(a) \ 199 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 200 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 201 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 202 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) == __IPV6_ADDR_INT32_ONE)) 203 204 /* 205 * IPv4 compatible 206 */ 207 #define IN6_IS_ADDR_V4COMPAT(a) \ 208 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 209 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 210 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \ 211 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != 0) && \ 212 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[12]) != __IPV6_ADDR_INT32_ONE)) 213 214 /* 215 * Mapped 216 */ 217 #define IN6_IS_ADDR_V4MAPPED(a) \ 218 ((*(const u_int32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 219 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 220 (*(const u_int32_t *)(const void *)(&(a)->s6_addr[8]) == __IPV6_ADDR_INT32_SMP)) 221 222 /* 223 * Unicast Scope 224 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373). 225 */ 226 #define IN6_IS_ADDR_LINKLOCAL(a) \ 227 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 228 #define IN6_IS_ADDR_SITELOCAL(a) \ 229 (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 230 231 /* 232 * Multicast 233 */ 234 #define __IPV6_ADDR_MC_SCOPE(a) ((a)->s6_addr[1] & 0x0f) 235 #define IN6_IS_ADDR_MULTICAST(a) ((a)->s6_addr[0] == 0xff) 236 237 #define __IPV6_ADDR_SCOPE_NODELOCAL 0x01 238 #define __IPV6_ADDR_SCOPE_INTFACELOCAL 0x01 239 #define __IPV6_ADDR_SCOPE_LINKLOCAL 0x02 240 #define __IPV6_ADDR_SCOPE_SITELOCAL 0x05 241 #define __IPV6_ADDR_SCOPE_ORGLOCAL 0x08 /* just used in this file */ 242 #define __IPV6_ADDR_SCOPE_GLOBAL 0x0e 243 244 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 245 (IN6_IS_ADDR_MULTICAST(a) && \ 246 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL)) 247 #define IN6_IS_ADDR_MC_INTFACELOCAL(a) \ 248 (IN6_IS_ADDR_MULTICAST(a) && \ 249 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_INTFACELOCAL)) 250 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 251 (IN6_IS_ADDR_MULTICAST(a) && \ 252 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL)) 253 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 254 (IN6_IS_ADDR_MULTICAST(a) && \ 255 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL)) 256 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 257 (IN6_IS_ADDR_MULTICAST(a) && \ 258 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL)) 259 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 260 (IN6_IS_ADDR_MULTICAST(a) && \ 261 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL)) 262 263 #ifdef _KERNEL 264 #define IN6_IS_SCOPE_LINKLOCAL(a) \ 265 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 266 (IN6_IS_ADDR_MC_LINKLOCAL(a))) 267 #define IN6_IS_SCOPE_EMBED(a) \ 268 ((IN6_IS_ADDR_LINKLOCAL(a)) || \ 269 (IN6_IS_ADDR_MC_LINKLOCAL(a)) || \ 270 (IN6_IS_ADDR_MC_INTFACELOCAL(a))) 271 272 #define IFA6_IS_DEPRECATED(a) \ 273 ((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \ 274 (u_int32_t)((getuptime() - (a)->ia6_updatetime)) > \ 275 (a)->ia6_lifetime.ia6t_pltime) 276 #define IFA6_IS_INVALID(a) \ 277 ((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \ 278 (u_int32_t)((getuptime() - (a)->ia6_updatetime)) > \ 279 (a)->ia6_lifetime.ia6t_vltime) 280 281 #endif /* _KERNEL */ 282 283 /* 284 * Options for use with [gs]etsockopt at the IPV6 level. 285 * First word of comment is data type; bool is stored in int. 286 */ 287 #define IPV6_UNICAST_HOPS 4 /* int; IP6 hops */ 288 #define IPV6_MULTICAST_IF 9 /* u_int; set/get IP6 multicast i/f */ 289 #define IPV6_MULTICAST_HOPS 10 /* u_int; set/get IP6 multicast hops */ 290 #define IPV6_MULTICAST_LOOP 11 /* u_int; set/get IP6 multicast loopback */ 291 #define IPV6_JOIN_GROUP 12 /* ip6_mreq; join a group membership */ 292 #define IPV6_LEAVE_GROUP 13 /* ip6_mreq; leave a group membership */ 293 #define IPV6_PORTRANGE 14 /* int; range to choose for unspec port */ 294 #if __BSD_VISIBLE 295 #define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */ 296 #endif 297 298 #define IPV6_CHECKSUM 26 /* int; checksum offset for raw socket */ 299 #define IPV6_V6ONLY 27 /* bool; make AF_INET6 sockets v6 only */ 300 301 /* new socket options introduced in RFC3542 */ 302 #define IPV6_RTHDRDSTOPTS 35 /* ip6_dest; send dst option before rthdr */ 303 304 #define IPV6_RECVPKTINFO 36 /* bool; recv if, dst addr */ 305 #define IPV6_RECVHOPLIMIT 37 /* bool; recv hop limit */ 306 #define IPV6_RECVRTHDR 38 /* bool; recv routing header */ 307 #define IPV6_RECVHOPOPTS 39 /* bool; recv hop-by-hop option */ 308 #define IPV6_RECVDSTOPTS 40 /* bool; recv dst option after rthdr */ 309 310 #define IPV6_USE_MIN_MTU 42 /* bool; send packets at the minimum MTU */ 311 #define IPV6_RECVPATHMTU 43 /* bool; notify an according MTU */ 312 313 #define IPV6_PATHMTU 44 /* mtuinfo; get the current path MTU (sopt), 314 4 bytes int; MTU notification (cmsg) */ 315 316 /* More new socket options introduced in RFC3542 */ 317 #define IPV6_PKTINFO 46 /* in6_pktinfo; send if, src addr */ 318 #define IPV6_HOPLIMIT 47 /* int; send hop limit */ 319 #define IPV6_NEXTHOP 48 /* sockaddr; next hop addr */ 320 #define IPV6_HOPOPTS 49 /* ip6_hbh; send hop-by-hop option */ 321 #define IPV6_DSTOPTS 50 /* ip6_dest; send dst option before rthdr */ 322 #define IPV6_RTHDR 51 /* ip6_rthdr; send routing header */ 323 324 #define IPV6_AUTH_LEVEL 53 /* int; authentication used */ 325 #define IPV6_ESP_TRANS_LEVEL 54 /* int; transport encryption */ 326 #define IPV6_ESP_NETWORK_LEVEL 55 /* int; full-packet encryption */ 327 #if __BSD_VISIBLE 328 #define IPSEC6_OUTSA 56 /* set the outbound SA for a socket */ 329 #endif 330 #define IPV6_RECVTCLASS 57 /* bool; recv traffic class values */ 331 332 #define IPV6_AUTOFLOWLABEL 59 /* bool; attach flowlabel automagically */ 333 #define IPV6_IPCOMP_LEVEL 60 /* int; compression */ 334 335 #define IPV6_TCLASS 61 /* int; send traffic class value */ 336 #define IPV6_DONTFRAG 62 /* bool; disable IPv6 fragmentation */ 337 #define IPV6_PIPEX 63 /* bool; using PIPEX */ 338 339 #define IPV6_RECVDSTPORT 64 /* bool; receive IP dst port w/dgram */ 340 #define IPV6_MINHOPCOUNT 65 /* int; minimum recv hop limit */ 341 342 #define IPV6_RTABLE 0x1021 /* int; routing table, see SO_RTABLE */ 343 344 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 345 #define IPV6_RTHDR_LOOSE 0 /* this hop need not be a neighbor */ 346 #define IPV6_RTHDR_TYPE_0 0 /* IPv6 routing header type 0 */ 347 348 /* 349 * Defaults and limits for options 350 */ 351 #define IPV6_DEFAULT_MULTICAST_HOPS 1 /* normally limit m'casts to 1 hop */ 352 #define IPV6_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 353 354 /* 355 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP. 356 */ 357 struct ipv6_mreq { 358 struct in6_addr ipv6mr_multiaddr; 359 unsigned int ipv6mr_interface; 360 }; 361 362 /* 363 * IPV6_PKTINFO: Packet information(RFC3542 sec 6) 364 */ 365 struct in6_pktinfo { 366 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 367 unsigned int ipi6_ifindex; /* send/recv interface index */ 368 }; 369 370 /* 371 * Control structure for IPV6_RECVPATHMTU socket option. 372 * XXX Not allowed here by POSIX, but required by RFC 3542, so go 373 * XXX with the code on the pavement. 374 */ 375 struct ip6_mtuinfo { 376 struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */ 377 u_int32_t ip6m_mtu; 378 }; 379 380 /* 381 * Argument for IPV6_PORTRANGE: 382 * - which range to search when port is unspecified at bind() or connect() 383 */ 384 #define IPV6_PORTRANGE_DEFAULT 0 /* default range */ 385 #define IPV6_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 386 #define IPV6_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 387 388 #ifdef __BSD_VISIBLE 389 390 #ifndef _SOCKLEN_T_DEFINED_ 391 #define _SOCKLEN_T_DEFINED_ 392 typedef __socklen_t socklen_t; /* length type for network syscalls */ 393 #endif 394 395 #endif /* __BSD_VISIBLE */ 396 397 #ifdef _KERNEL 398 extern const u_char inet6ctlerrmap[]; 399 extern const struct in6_addr zeroin6_addr; 400 401 struct mbuf; 402 struct sockaddr; 403 struct sockaddr_in6; 404 struct ifaddr; 405 struct in6_ifaddr; 406 struct ifnet; 407 struct rtentry; 408 409 void ipv6_input(struct ifnet *, struct mbuf *); 410 struct mbuf * 411 ipv6_check(struct ifnet *, struct mbuf *); 412 413 int in6_cksum(struct mbuf *, uint8_t, uint32_t, uint32_t); 414 void in6_proto_cksum_out(struct mbuf *, struct ifnet *); 415 int in6_addrscope(struct in6_addr *); 416 struct in6_ifaddr *in6_ifawithscope(struct ifnet *, struct in6_addr *, u_int, 417 struct rtentry *); 418 int in6_mask2len(struct in6_addr *, u_char *); 419 int in6_nam2sin6(const struct mbuf *, struct sockaddr_in6 **); 420 int in6_sa2sin6(struct sockaddr *, struct sockaddr_in6 **); 421 422 struct ip6_pktopts; 423 struct ip6_moptions; 424 425 int in6_embedscope(struct in6_addr *, const struct sockaddr_in6 *, 426 const struct ip6_pktopts *, const struct ip6_moptions *); 427 void in6_recoverscope(struct sockaddr_in6 *, const struct in6_addr *); 428 void in6_clearscope(struct in6_addr *); 429 430 /* 431 * Convert between address family specific and general structs. 432 * Inline functions check the source type and are stricter than 433 * casts or defines. 434 */ 435 436 static inline struct sockaddr_in6 * 437 satosin6(struct sockaddr *sa) 438 { 439 return ((struct sockaddr_in6 *)(sa)); 440 } 441 442 static inline const struct sockaddr_in6 * 443 satosin6_const(const struct sockaddr *sa) 444 { 445 return ((const struct sockaddr_in6 *)(sa)); 446 } 447 448 static inline struct sockaddr * 449 sin6tosa(struct sockaddr_in6 *sin6) 450 { 451 return ((struct sockaddr *)(sin6)); 452 } 453 454 static inline const struct sockaddr * 455 sin6tosa_const(const struct sockaddr_in6 *sin6) 456 { 457 return ((const struct sockaddr *)(sin6)); 458 } 459 460 static inline struct in6_ifaddr * 461 ifatoia6(struct ifaddr *ifa) 462 { 463 return ((struct in6_ifaddr *)(ifa)); 464 } 465 466 #endif /* _KERNEL */ 467 468 #if __BSD_VISIBLE 469 /* 470 * Definitions for inet6 sysctl operations. 471 * 472 * Third level is protocol number. 473 * Fourth level is desired variable within that protocol. 474 */ 475 #define IPV6PROTO_MAXID (IPPROTO_DIVERT + 1) /* don't list to IPV6PROTO_MAX */ 476 477 #define CTL_IPV6PROTO_NAMES { \ 478 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 479 { 0, 0 }, \ 480 { "tcp6", CTLTYPE_NODE }, \ 481 { 0, 0 }, \ 482 { 0, 0 }, \ 483 { 0, 0 }, \ 484 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 485 { 0, 0 }, \ 486 { 0, 0 }, \ 487 { "udp6", CTLTYPE_NODE }, \ 488 { 0, 0 }, \ 489 { 0, 0 }, \ 490 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 491 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 492 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 493 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 494 { 0, 0 }, \ 495 { "ip6", CTLTYPE_NODE }, \ 496 { 0, 0 }, \ 497 { 0, 0 }, \ 498 { 0, 0 }, \ 499 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 500 { 0, 0 }, \ 501 { "ipsec6", CTLTYPE_NODE }, \ 502 { 0, 0 }, \ 503 { 0, 0 }, \ 504 { 0, 0 }, \ 505 { 0, 0 }, \ 506 { 0, 0 }, \ 507 { 0, 0 }, \ 508 { "icmp6", CTLTYPE_NODE }, \ 509 { 0, 0 }, \ 510 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 511 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 512 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 513 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 514 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 515 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 516 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 517 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 518 { 0, 0 }, \ 519 { 0, 0 }, \ 520 { 0, 0 }, \ 521 { 0, 0 }, \ 522 { 0, 0 }, \ 523 { 0, 0 }, \ 524 { 0, 0 }, \ 525 { 0, 0 }, \ 526 { 0, 0 }, \ 527 { 0, 0 }, \ 528 /*110*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 529 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 530 /*120*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 531 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 532 /*130*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 533 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 534 /*140*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 535 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 536 /*150*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 537 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 538 /*160*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 539 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 540 /*170*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 541 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 542 /*180*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 543 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 544 /*190*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 545 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 546 /*200*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 547 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 548 /*210*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 549 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 550 /*220*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 551 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 552 /*230*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 553 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 554 /*240*/ { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 555 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 556 /*250*/ { 0, 0 }, \ 557 { 0, 0 }, \ 558 { 0, 0 }, \ 559 { 0, 0 }, \ 560 { 0, 0 }, \ 561 { 0, 0 }, \ 562 { 0, 0 }, \ 563 { 0, 0 }, \ 564 { "divert", CTLTYPE_NODE }, \ 565 } 566 567 /* 568 * Names for IP sysctl objects 569 */ 570 #define IPV6CTL_FORWARDING 1 /* act as router */ 571 #define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/ 572 #define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */ 573 #define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */ 574 #define IPV6CTL_STATS 6 /* stats */ 575 #define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */ 576 #define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */ 577 #define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */ 578 #define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */ 579 #define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimum logging interval */ 580 #define IPV6CTL_ACCEPT_RTADV 12 581 #define IPV6CTL_LOG_INTERVAL 14 582 #define IPV6CTL_HDRNESTLIMIT 15 583 #define IPV6CTL_DAD_COUNT 16 584 #define IPV6CTL_AUTO_FLOWLABEL 17 585 #define IPV6CTL_DEFMCASTHLIM 18 586 #define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */ 587 /* 24 to 40: reserved */ 588 #define IPV6CTL_MAXFRAGS 41 /* max fragments */ 589 #define IPV6CTL_MFORWARDING 42 590 #define IPV6CTL_MULTIPATH 43 591 #define IPV6CTL_MCAST_PMTU 44 /* path MTU discovery for multicast */ 592 #define IPV6CTL_NEIGHBORGCTHRESH 45 593 #define IPV6CTL_MAXDYNROUTES 48 594 #define IPV6CTL_DAD_PENDING 49 595 #define IPV6CTL_MTUDISCTIMEOUT 50 596 #define IPV6CTL_IFQUEUE 51 597 #define IPV6CTL_MRTMIF 52 598 #define IPV6CTL_MRTMFC 53 599 #define IPV6CTL_SOIIKEY 54 600 #define IPV6CTL_MAXID 55 601 602 /* New entries should be added here from current IPV6CTL_MAXID value. */ 603 /* to define items, should talk with KAME guys first, for *BSD compatibility */ 604 605 #define IPV6CTL_NAMES { \ 606 { 0, 0 }, \ 607 { "forwarding", CTLTYPE_INT }, \ 608 { "redirect", CTLTYPE_INT }, \ 609 { "hlim", CTLTYPE_INT }, \ 610 { 0, 0 }, \ 611 { "forwsrcrt", CTLTYPE_INT }, \ 612 { 0, 0 }, \ 613 { 0, 0 }, \ 614 { "mrtproto", CTLTYPE_INT }, \ 615 { "maxfragpackets", CTLTYPE_INT }, \ 616 { "sourcecheck", CTLTYPE_INT }, \ 617 { "sourcecheck_logint", CTLTYPE_INT }, \ 618 { 0, 0 }, \ 619 { 0, 0 }, \ 620 { "log_interval", CTLTYPE_INT }, \ 621 { "hdrnestlimit", CTLTYPE_INT }, \ 622 { "dad_count", CTLTYPE_INT }, \ 623 { "auto_flowlabel", CTLTYPE_INT }, \ 624 { "defmcasthlim", CTLTYPE_INT }, \ 625 { 0, 0 }, \ 626 { 0, 0 }, \ 627 { "use_deprecated", CTLTYPE_INT }, \ 628 { 0, 0 }, \ 629 { 0, 0 }, \ 630 { 0, 0 }, \ 631 { 0, 0 }, \ 632 { 0, 0 }, \ 633 { 0, 0 }, \ 634 { 0, 0 }, \ 635 { 0, 0 }, \ 636 { 0, 0 }, \ 637 { 0, 0 }, \ 638 { 0, 0 }, \ 639 { 0, 0 }, \ 640 { 0, 0 }, \ 641 { 0, 0 }, \ 642 { 0, 0 }, \ 643 { 0, 0 }, \ 644 { 0, 0 }, \ 645 { 0, 0 }, \ 646 { 0, 0 }, \ 647 { "maxfrags", CTLTYPE_INT }, \ 648 { "mforwarding", CTLTYPE_INT }, \ 649 { "multipath", CTLTYPE_INT }, \ 650 { "multicast_mtudisc", CTLTYPE_INT }, \ 651 { "neighborgcthresh", CTLTYPE_INT }, \ 652 { 0, 0 }, \ 653 { 0, 0 }, \ 654 { "maxdynroutes", CTLTYPE_INT }, \ 655 { "dad_pending", CTLTYPE_INT }, \ 656 { "mtudisctimeout", CTLTYPE_INT }, \ 657 { "ifq", CTLTYPE_NODE }, \ 658 { "mrtmif", CTLTYPE_STRUCT }, \ 659 { "mrtmfc", CTLTYPE_STRUCT }, \ 660 { "soiikey", CTLTYPE_STRING }, /* binary string */ \ 661 } 662 663 __BEGIN_DECLS 664 struct cmsghdr; 665 666 extern int inet6_opt_init(void *, socklen_t); 667 extern int inet6_opt_append(void *, socklen_t, int, u_int8_t, 668 socklen_t, u_int8_t, void **); 669 extern int inet6_opt_finish(void *, socklen_t, int); 670 extern int inet6_opt_set_val(void *, int, void *, socklen_t); 671 672 extern int inet6_opt_next(void *, socklen_t, int, u_int8_t *, 673 socklen_t *, void **); 674 extern int inet6_opt_find(void *, socklen_t, int, u_int8_t, 675 socklen_t *, void **); 676 extern int inet6_opt_get_val(void *, int, void *, socklen_t); 677 678 extern socklen_t inet6_rth_space(int, int); 679 extern void *inet6_rth_init(void *, socklen_t, int, int); 680 extern int inet6_rth_add(void *, const struct in6_addr *); 681 extern int inet6_rth_reverse(const void *, void *); 682 extern int inet6_rth_segments(const void *); 683 extern struct in6_addr *inet6_rth_getaddr(const void *, int); 684 __END_DECLS 685 #endif /* __BSD_VISIBLE */ 686 687 #endif /* !_NETINET6_IN6_H_ */ 688