sys/netinet/icmp6.h

   1 /*      $FreeBSD: src/sys/netinet/icmp6.h,v 1.2.2.5 2002/06/29 18:31:11 ume Exp $       */
   2 /*      $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 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) 1982, 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  *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
  66  */
  67
  68 #ifndef _NETINET_ICMP6_H_
  69 #define _NETINET_ICMP6_H_
  70
  71 #ifndef _SYS_TYPES_H_
  72 #include <sys/types.h>
  73 #endif
  74 #ifndef _NETINET6_IN6_H_
  75 #include <netinet/in.h>
  76 #endif
  77 #include <machine/endian.h>
  78
  79 #define ICMPV6_PLD_MAXLEN       1232    /* IPV6_MMTU - sizeof(struct ip6_hdr)
  80                                            - sizeof(struct icmp6_hdr) */
  81
  82 struct icmp6_hdr {
  83         u_int8_t        icmp6_type;     /* type field */
  84         u_int8_t        icmp6_code;     /* code field */
  85         u_int16_t       icmp6_cksum;    /* checksum field */
  86         union {
  87                 u_int32_t       icmp6_un_data32[1]; /* type-specific field */
  88                 u_int16_t       icmp6_un_data16[2]; /* type-specific field */
  89                 u_int8_t        icmp6_un_data8[4];  /* type-specific field */
  90         } icmp6_dataun;
  91 } __attribute__((__packed__));
  92
  93 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
  94 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
  95 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
  96 #define icmp6_pptr      icmp6_data32[0]         /* parameter prob */
  97 #define icmp6_mtu       icmp6_data32[0]         /* packet too big */
  98 #define icmp6_id        icmp6_data16[0]         /* echo request/reply */
  99 #define icmp6_seq       icmp6_data16[1]         /* echo request/reply */
 100 #define icmp6_maxdelay  icmp6_data16[0]         /* mcast group membership */
 101
 102 #define ICMP6_DST_UNREACH               1       /* dest unreachable, codes: */
 103 #define ICMP6_PACKET_TOO_BIG            2       /* packet too big */
 104 #define ICMP6_TIME_EXCEEDED             3       /* time exceeded, code: */
 105 #define ICMP6_PARAM_PROB                4       /* ip6 header bad */
 106
 107 #define ICMP6_ECHO_REQUEST              128     /* echo service */
 108 #define ICMP6_ECHO_REPLY                129     /* echo reply */
 109 #define ICMP6_MEMBERSHIP_QUERY          130     /* group membership query */
 110 #define MLD_LISTENER_QUERY              130     /* multicast listener query */
 111 #define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */
 112 #define MLD_LISTENER_REPORT             131     /* multicast listener report */
 113 #define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */
 114 #define MLD_LISTENER_DONE               132     /* multicast listener done */
 115 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* defined in RFC3542 */
 116
 117 #ifndef _KERNEL
 118 /* the followings are for backward compatibility to old KAME apps. */
 119 #define MLD6_LISTENER_QUERY     MLD_LISTENER_QUERY
 120 #define MLD6_LISTENER_REPORT    MLD_LISTENER_REPORT
 121 #define MLD6_LISTENER_DONE      MLD_LISTENER_DONE
 122 #endif
 123
 124 #define ND_ROUTER_SOLICIT               133     /* router solicitation */
 125 #define ND_ROUTER_ADVERT                134     /* router advertisment */
 126 #define ND_NEIGHBOR_SOLICIT             135     /* neighbor solicitation */
 127 #define ND_NEIGHBOR_ADVERT              136     /* neighbor advertisment */
 128 #define ND_REDIRECT                     137     /* redirect */
 129
 130 #define ICMP6_ROUTER_RENUMBERING        138     /* router renumbering */
 131
 132 #define ICMP6_WRUREQUEST                139     /* who are you request */
 133 #define ICMP6_WRUREPLY                  140     /* who are you reply */
 134 #define ICMP6_FQDN_QUERY                139     /* FQDN query */
 135 #define ICMP6_FQDN_REPLY                140     /* FQDN reply */
 136 #define ICMP6_NI_QUERY                  139     /* node information request */
 137 #define ICMP6_NI_REPLY                  140     /* node information reply */
 138
 139 /* The definitions below are experimental. TBA */
 140 #define MLD_MTRACE_RESP                 200     /* mtrace resp (to sender) */
 141 #define MLD_MTRACE                      201     /* mtrace messages */
 142
 143 #define ICMP6_HADISCOV_REQUEST          202     /* XXX To be defined */
 144 #define ICMP6_HADISCOV_REPLY            203     /* XXX To be defined */
 145
 146 #ifndef _KERNEL
 147 #define MLD6_MTRACE_RESP        MLD_MTRACE_RESP
 148 #define MLD6_MTRACE             MLD_MTRACE
 149 #endif
 150
 151 #define ICMP6_MAXTYPE                   203
 152
 153 #define ICMP6_DST_UNREACH_NOROUTE       0       /* no route to destination */
 154 #define ICMP6_DST_UNREACH_ADMIN         1       /* administratively prohibited */
 155 #define ICMP6_DST_UNREACH_NOTNEIGHBOR   2       /* not a neighbor(obsolete) */
 156 #define ICMP6_DST_UNREACH_BEYONDSCOPE   2       /* beyond scope of source address */
 157 #define ICMP6_DST_UNREACH_ADDR          3       /* address unreachable */
 158 #define ICMP6_DST_UNREACH_NOPORT        4       /* port unreachable */
 159
 160 #define ICMP6_TIME_EXCEED_TRANSIT       0       /* ttl==0 in transit */
 161 #define ICMP6_TIME_EXCEED_REASSEMBLY    1       /* ttl==0 in reass */
 162
 163 #define ICMP6_PARAMPROB_HEADER          0       /* erroneous header field */
 164 #define ICMP6_PARAMPROB_NEXTHEADER      1       /* unrecognized next header */
 165 #define ICMP6_PARAMPROB_OPTION          2       /* unrecognized option */
 166
 167 #define ICMP6_INFOMSG_MASK              0x80    /* all informational messages */
 168
 169 #define ICMP6_NI_SUBJ_IPV6      0       /* Query Subject is an IPv6 address */
 170 #define ICMP6_NI_SUBJ_FQDN      1       /* Query Subject is a Domain name */
 171 #define ICMP6_NI_SUBJ_IPV4      2       /* Query Subject is an IPv4 address */
 172
 173 #define ICMP6_NI_SUCCESS        0       /* node information successful reply */
 174 #define ICMP6_NI_REFUSED        1       /* node information request is refused */
 175 #define ICMP6_NI_UNKNOWN        2       /* unknown Qtype */
 176
 177 #define ICMP6_ROUTER_RENUMBERING_COMMAND  0     /* rr command */
 178 #define ICMP6_ROUTER_RENUMBERING_RESULT   1     /* rr result */
 179 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255     /* rr seq num reset */
 180
 181 /* Used in kernel only */
 182 #define ND_REDIRECT_ONLINK      0       /* redirect to an on-link node */
 183 #define ND_REDIRECT_ROUTER      1       /* redirect to a better router */
 184
 185 /*
 186  * Multicast Listener Discovery
 187  */
 188 struct mld_hdr {
 189         struct icmp6_hdr        mld_icmp6_hdr;
 190         struct in6_addr         mld_addr; /* multicast address */
 191 } __attribute__((__packed__));
 192
 193 /* definitions to provide backward compatibility to old KAME applications */
 194 #ifndef _KERNEL
 195 #define mld6_hdr        mld_hdr
 196 #define mld6_type       mld_type
 197 #define mld6_code       mld_code
 198 #define mld6_cksum      mld_cksum
 199 #define mld6_maxdelay   mld_maxdelay
 200 #define mld6_reserved   mld_reserved
 201 #define mld6_addr       mld_addr
 202 #endif
 203
 204 /* shortcut macro definitions */
 205 #define mld_type        mld_icmp6_hdr.icmp6_type
 206 #define mld_code        mld_icmp6_hdr.icmp6_code
 207 #define mld_cksum       mld_icmp6_hdr.icmp6_cksum
 208 #define mld_maxdelay    mld_icmp6_hdr.icmp6_data16[0]
 209 #define mld_reserved    mld_icmp6_hdr.icmp6_data16[1]
 210
 211 /*
 212  * Neighbor Discovery
 213  */
 214
 215 struct nd_router_solicit {      /* router solicitation */
 216         struct icmp6_hdr        nd_rs_hdr;
 217         /* could be followed by options */
 218 } __attribute__((__packed__));
 219
 220 #define nd_rs_type      nd_rs_hdr.icmp6_type
 221 #define nd_rs_code      nd_rs_hdr.icmp6_code
 222 #define nd_rs_cksum     nd_rs_hdr.icmp6_cksum
 223 #define nd_rs_reserved  nd_rs_hdr.icmp6_data32[0]
 224
 225 struct nd_router_advert {       /* router advertisement */
 226         struct icmp6_hdr        nd_ra_hdr;
 227         u_int32_t               nd_ra_reachable;        /* reachable time */
 228         u_int32_t               nd_ra_retransmit;       /* retransmit timer */
 229         /* could be followed by options */
 230 } __attribute__((__packed__));
 231
 232 #define nd_ra_type              nd_ra_hdr.icmp6_type
 233 #define nd_ra_code              nd_ra_hdr.icmp6_code
 234 #define nd_ra_cksum             nd_ra_hdr.icmp6_cksum
 235 #define nd_ra_curhoplimit       nd_ra_hdr.icmp6_data8[0]
 236 #define nd_ra_flags_reserved    nd_ra_hdr.icmp6_data8[1]
 237 #define ND_RA_FLAG_MANAGED      0x80
 238 #define ND_RA_FLAG_OTHER        0x40
 239 #define ND_RA_FLAG_HA           0x20
 240
 241 /*
 242  * Router preference values based on draft-draves-ipngwg-router-selection-01.
 243  * These are non-standard definitions.
 244  */
 245 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
 246
 247 #define ND_RA_FLAG_RTPREF_HIGH  0x08 /* 00001000 */
 248 #define ND_RA_FLAG_RTPREF_MEDIUM        0x00 /* 00000000 */
 249 #define ND_RA_FLAG_RTPREF_LOW   0x18 /* 00011000 */
 250 #define ND_RA_FLAG_RTPREF_RSV   0x10 /* 00010000 */
 251
 252 #define nd_ra_router_lifetime   nd_ra_hdr.icmp6_data16[1]
 253
 254 struct nd_neighbor_solicit {    /* neighbor solicitation */
 255         struct icmp6_hdr        nd_ns_hdr;
 256         struct in6_addr         nd_ns_target;   /*target address */
 257         /* could be followed by options */
 258 } __attribute__((__packed__));
 259
 260 #define nd_ns_type              nd_ns_hdr.icmp6_type
 261 #define nd_ns_code              nd_ns_hdr.icmp6_code
 262 #define nd_ns_cksum             nd_ns_hdr.icmp6_cksum
 263 #define nd_ns_reserved          nd_ns_hdr.icmp6_data32[0]
 264
 265 struct nd_neighbor_advert {     /* neighbor advertisement */
 266         struct icmp6_hdr        nd_na_hdr;
 267         struct in6_addr         nd_na_target;   /* target address */
 268         /* could be followed by options */
 269 } __attribute__((__packed__));
 270
 271 #define nd_na_type              nd_na_hdr.icmp6_type
 272 #define nd_na_code              nd_na_hdr.icmp6_code
 273 #define nd_na_cksum             nd_na_hdr.icmp6_cksum
 274 #define nd_na_flags_reserved    nd_na_hdr.icmp6_data32[0]
 275 #if _BYTE_ORDER == _BIG_ENDIAN
 276 #define ND_NA_FLAG_ROUTER               0x80000000
 277 #define ND_NA_FLAG_SOLICITED            0x40000000
 278 #define ND_NA_FLAG_OVERRIDE             0x20000000
 279 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 280 #define ND_NA_FLAG_ROUTER               0x80
 281 #define ND_NA_FLAG_SOLICITED            0x40
 282 #define ND_NA_FLAG_OVERRIDE             0x20
 283 #else
 284 #error "Byte order not implemented"
 285 #endif
 286
 287 struct nd_redirect {            /* redirect */
 288         struct icmp6_hdr        nd_rd_hdr;
 289         struct in6_addr         nd_rd_target;   /* target address */
 290         struct in6_addr         nd_rd_dst;      /* destination address */
 291         /* could be followed by options */
 292 } __attribute__((__packed__));
 293
 294 #define nd_rd_type              nd_rd_hdr.icmp6_type
 295 #define nd_rd_code              nd_rd_hdr.icmp6_code
 296 #define nd_rd_cksum             nd_rd_hdr.icmp6_cksum
 297 #define nd_rd_reserved          nd_rd_hdr.icmp6_data32[0]
 298
 299 struct nd_opt_hdr {             /* Neighbor discovery option header */
 300         u_int8_t        nd_opt_type;
 301         u_int8_t        nd_opt_len;
 302         /* followed by option specific data*/
 303 } __attribute__((__packed__));
 304
 305 #define ND_OPT_SOURCE_LINKADDR          1
 306 #define ND_OPT_TARGET_LINKADDR          2
 307 #define ND_OPT_PREFIX_INFORMATION       3
 308 #define ND_OPT_REDIRECTED_HEADER        4
 309 #define ND_OPT_MTU                      5
 310
 311 #define ND_OPT_ROUTE_INFO               200     /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
 312 #define ND_OPT_RDNSS                    25      /* RFC 6106 */
 313 #define ND_OPT_DNSSL                    31      /* RFC 6106 */
 314 #define ND_OPT_MAX                      31
 315
 316
 317 struct nd_opt_prefix_info {     /* prefix information */
 318         u_int8_t        nd_opt_pi_type;
 319         u_int8_t        nd_opt_pi_len;
 320         u_int8_t        nd_opt_pi_prefix_len;
 321         u_int8_t        nd_opt_pi_flags_reserved;
 322         u_int32_t       nd_opt_pi_valid_time;
 323         u_int32_t       nd_opt_pi_preferred_time;
 324         u_int32_t       nd_opt_pi_reserved2;
 325         struct in6_addr nd_opt_pi_prefix;
 326 } __attribute__((__packed__));
 327
 328 #define ND_OPT_PI_FLAG_ONLINK           0x80
 329 #define ND_OPT_PI_FLAG_AUTO             0x40
 330
 331 struct nd_opt_rd_hdr {          /* redirected header */
 332         u_int8_t        nd_opt_rh_type;
 333         u_int8_t        nd_opt_rh_len;
 334         u_int16_t       nd_opt_rh_reserved1;
 335         u_int32_t       nd_opt_rh_reserved2;
 336         /* followed by IP header and data */
 337 } __attribute__((__packed__));
 338
 339 struct nd_opt_mtu {             /* MTU option */
 340         u_int8_t        nd_opt_mtu_type;
 341         u_int8_t        nd_opt_mtu_len;
 342         u_int16_t       nd_opt_mtu_reserved;
 343         u_int32_t       nd_opt_mtu_mtu;
 344 } __attribute__((__packed__));
 345
 346 struct nd_opt_route_info {      /* route info */
 347         u_int8_t        nd_opt_rti_type;
 348         u_int8_t        nd_opt_rti_len;
 349         u_int8_t        nd_opt_rti_prefixlen;
 350         u_int8_t        nd_opt_rti_flags;
 351         u_int32_t       nd_opt_rti_lifetime;
 352         /* prefix follows */
 353 } __attribute__((__packed__));
 354
 355 struct nd_opt_rdnss {           /* RDNSS option (RFC 6106) */
 356         u_int8_t        nd_opt_rdnss_type;
 357         u_int8_t        nd_opt_rdnss_len;
 358         u_int16_t       nd_opt_rdnss_reserved;
 359         u_int32_t       nd_opt_rdnss_lifetime;
 360         /* followed by list of recursive DNS servers */
 361 } __attribute__((__packed__));
 362
 363 struct nd_opt_dnssl {           /* DNSSL option (RFC 6106) */
 364         u_int8_t        nd_opt_dnssl_type;
 365         u_int8_t        nd_opt_dnssl_len;
 366         u_int16_t       nd_opt_dnssl_reserved;
 367         u_int32_t       nd_opt_dnssl_lifetime;
 368         /* followed by list of DNS search domains */
 369 } __attribute__((__packed__));
 370
 371 /*
 372  * icmp6 namelookup
 373  */
 374
 375 struct icmp6_namelookup {
 376         struct icmp6_hdr        icmp6_nl_hdr;
 377         u_int8_t        icmp6_nl_nonce[8];
 378         int32_t         icmp6_nl_ttl;
 379 #if 0
 380         u_int8_t        icmp6_nl_len;
 381         u_int8_t        icmp6_nl_name[3];
 382 #endif
 383         /* could be followed by options */
 384 } __attribute__((__packed__));
 385
 386 /*
 387  * icmp6 node information
 388  */
 389 struct icmp6_nodeinfo {
 390         struct icmp6_hdr icmp6_ni_hdr;
 391         u_int8_t icmp6_ni_nonce[8];
 392         /* could be followed by reply data */
 393 } __attribute__((__packed__));
 394
 395 #define ni_type         icmp6_ni_hdr.icmp6_type
 396 #define ni_code         icmp6_ni_hdr.icmp6_code
 397 #define ni_cksum        icmp6_ni_hdr.icmp6_cksum
 398 #define ni_qtype        icmp6_ni_hdr.icmp6_data16[0]
 399 #define ni_flags        icmp6_ni_hdr.icmp6_data16[1]
 400
 401 #define NI_QTYPE_NOOP           0 /* NOOP  */
 402 #define NI_QTYPE_SUPTYPES       1 /* Supported Qtypes */
 403 #define NI_QTYPE_FQDN           2 /* FQDN (draft 04) */
 404 #define NI_QTYPE_DNSNAME        2 /* DNS Name */
 405 #define NI_QTYPE_NODEADDR       3 /* Node Addresses */
 406 #define NI_QTYPE_IPV4ADDR       4 /* IPv4 Addresses */
 407
 408 #if _BYTE_ORDER == _BIG_ENDIAN
 409 #define NI_SUPTYPE_FLAG_COMPRESS        0x1
 410 #define NI_FQDN_FLAG_VALIDTTL           0x1
 411 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 412 #define NI_SUPTYPE_FLAG_COMPRESS        0x0100
 413 #define NI_FQDN_FLAG_VALIDTTL           0x0100
 414 #else
 415 #error "Byte order not implemented"
 416 #endif
 417
 418 #ifdef NAME_LOOKUPS_04
 419 #if _BYTE_ORDER == _BIG_ENDIAN
 420 #define NI_NODEADDR_FLAG_LINKLOCAL      0x1
 421 #define NI_NODEADDR_FLAG_SITELOCAL      0x2
 422 #define NI_NODEADDR_FLAG_GLOBAL         0x4
 423 #define NI_NODEADDR_FLAG_ALL            0x8
 424 #define NI_NODEADDR_FLAG_TRUNCATE       0x10
 425 #define NI_NODEADDR_FLAG_ANYCAST        0x20 /* just experimental. not in spec */
 426 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 427 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0100
 428 #define NI_NODEADDR_FLAG_SITELOCAL      0x0200
 429 #define NI_NODEADDR_FLAG_GLOBAL         0x0400
 430 #define NI_NODEADDR_FLAG_ALL            0x0800
 431 #define NI_NODEADDR_FLAG_TRUNCATE       0x1000
 432 #define NI_NODEADDR_FLAG_ANYCAST        0x2000 /* just experimental. not in spec */
 433 #else
 434 #error "Byte order not implemented"
 435 #endif
 436 #else  /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
 437 #if _BYTE_ORDER == _BIG_ENDIAN
 438 #define NI_NODEADDR_FLAG_TRUNCATE       0x1
 439 #define NI_NODEADDR_FLAG_ALL            0x2
 440 #define NI_NODEADDR_FLAG_COMPAT         0x4
 441 #define NI_NODEADDR_FLAG_LINKLOCAL      0x8
 442 #define NI_NODEADDR_FLAG_SITELOCAL      0x10
 443 #define NI_NODEADDR_FLAG_GLOBAL         0x20
 444 #define NI_NODEADDR_FLAG_ANYCAST        0x40 /* just experimental. not in spec */
 445 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 446 #define NI_NODEADDR_FLAG_TRUNCATE       0x0100
 447 #define NI_NODEADDR_FLAG_ALL            0x0200
 448 #define NI_NODEADDR_FLAG_COMPAT         0x0400
 449 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0800
 450 #define NI_NODEADDR_FLAG_SITELOCAL      0x1000
 451 #define NI_NODEADDR_FLAG_GLOBAL         0x2000
 452 #define NI_NODEADDR_FLAG_ANYCAST        0x4000 /* just experimental. not in spec */
 453 #else
 454 #error "Byte order not implemented"
 455 #endif
 456 #endif
 457
 458 struct ni_reply_fqdn {
 459         u_int32_t ni_fqdn_ttl;  /* TTL */
 460         u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
 461         u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
 462 } __attribute__((__packed__));
 463
 464 /*
 465  * Router Renumbering. as router-renum-08.txt
 466  */
 467 struct icmp6_router_renum {     /* router renumbering header */
 468         struct icmp6_hdr        rr_hdr;
 469         u_int8_t        rr_segnum;
 470         u_int8_t        rr_flags;
 471         u_int16_t       rr_maxdelay;
 472         u_int32_t       rr_reserved;
 473 } __attribute__((__packed__));
 474
 475 #define ICMP6_RR_FLAGS_TEST             0x80
 476 #define ICMP6_RR_FLAGS_REQRESULT        0x40
 477 #define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
 478 #define ICMP6_RR_FLAGS_SPECSITE         0x10
 479 #define ICMP6_RR_FLAGS_PREVDONE         0x08
 480
 481 #define rr_type         rr_hdr.icmp6_type
 482 #define rr_code         rr_hdr.icmp6_code
 483 #define rr_cksum        rr_hdr.icmp6_cksum
 484 #define rr_seqnum       rr_hdr.icmp6_data32[0]
 485
 486 struct rr_pco_match {           /* match prefix part */
 487         u_int8_t        rpm_code;
 488         u_int8_t        rpm_len;
 489         u_int8_t        rpm_ordinal;
 490         u_int8_t        rpm_matchlen;
 491         u_int8_t        rpm_minlen;
 492         u_int8_t        rpm_maxlen;
 493         u_int16_t       rpm_reserved;
 494         struct  in6_addr        rpm_prefix;
 495 } __attribute__((__packed__));
 496
 497 #define RPM_PCO_ADD             1
 498 #define RPM_PCO_CHANGE          2
 499 #define RPM_PCO_SETGLOBAL       3
 500 #define RPM_PCO_MAX             4
 501
 502 struct rr_pco_use {             /* use prefix part */
 503         u_int8_t        rpu_uselen;
 504         u_int8_t        rpu_keeplen;
 505         u_int8_t        rpu_ramask;
 506         u_int8_t        rpu_raflags;
 507         u_int32_t       rpu_vltime;
 508         u_int32_t       rpu_pltime;
 509         u_int32_t       rpu_flags;
 510         struct  in6_addr rpu_prefix;
 511 } __attribute__((__packed__));
 512 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x80
 513 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x40
 514
 515 #if _BYTE_ORDER == _BIG_ENDIAN
 516 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80000000
 517 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40000000
 518 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 519 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80
 520 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40
 521 #else
 522 #error "Byte order not implemented"
 523 #endif
 524
 525 struct rr_result {              /* router renumbering result message */
 526         u_int16_t       rrr_flags;
 527         u_int8_t        rrr_ordinal;
 528         u_int8_t        rrr_matchedlen;
 529         u_int32_t       rrr_ifid;
 530         struct  in6_addr rrr_prefix;
 531 } __attribute__((__packed__));
 532 #if _BYTE_ORDER == _BIG_ENDIAN
 533 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0002
 534 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0001
 535 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 536 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0200
 537 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0100
 538 #else
 539 #error "Byte order not implemented"
 540 #endif
 541
 542 /*
 543  * icmp6 filter structures.
 544  */
 545
 546 struct icmp6_filter {
 547         u_int32_t icmp6_filt[8];
 548 };
 549
 550 #ifdef _KERNEL
 551 #define ICMP6_FILTER_SETPASSALL(filterp) \
 552 do {                                                            \
 553         int i; u_char *p;                                       \
 554         p = (u_char *)filterp;                                  \
 555         for (i = 0; i < sizeof(struct icmp6_filter); i++)       \
 556                 p[i] = 0xff;                                    \
 557 } while (0)
 558 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 559         bzero(filterp, sizeof(struct icmp6_filter))
 560 #else /* _KERNEL */
 561 #define ICMP6_FILTER_SETPASSALL(filterp) \
 562         memset(filterp, 0xff, sizeof(struct icmp6_filter))
 563 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 564         memset(filterp, 0x00, sizeof(struct icmp6_filter))
 565 #endif /* _KERNEL */
 566
 567 #define ICMP6_FILTER_SETPASS(type, filterp) \
 568         (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
 569 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
 570         (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
 571 #define ICMP6_FILTER_WILLPASS(type, filterp) \
 572         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
 573 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
 574         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
 575
 576 /*
 577  * Variables related to this implementation
 578  * of the internet control message protocol version 6.
 579  */
 580 struct icmp6errstat {
 581         u_quad_t icp6errs_dst_unreach_noroute;
 582         u_quad_t icp6errs_dst_unreach_admin;
 583         u_quad_t icp6errs_dst_unreach_beyondscope;
 584         u_quad_t icp6errs_dst_unreach_addr;
 585         u_quad_t icp6errs_dst_unreach_noport;
 586         u_quad_t icp6errs_packet_too_big;
 587         u_quad_t icp6errs_time_exceed_transit;
 588         u_quad_t icp6errs_time_exceed_reassembly;
 589         u_quad_t icp6errs_paramprob_header;
 590         u_quad_t icp6errs_paramprob_nextheader;
 591         u_quad_t icp6errs_paramprob_option;
 592         u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
 593         u_quad_t icp6errs_unknown;
 594 };
 595
 596 struct icmp6stat {
 597 /* statistics related to icmp6 packets generated */
 598         u_quad_t icp6s_error;           /* # of calls to icmp6_error */
 599         u_quad_t icp6s_canterror;       /* no error 'cuz old was icmp */
 600         u_quad_t icp6s_toofreq;         /* no error 'cuz rate limitation */
 601         u_quad_t icp6s_outhist[256];
 602 /* statistics related to input message processed */
 603         u_quad_t icp6s_badcode;         /* icmp6_code out of range */
 604         u_quad_t icp6s_tooshort;        /* packet < sizeof(struct icmp6_hdr) */
 605         u_quad_t icp6s_checksum;        /* bad checksum */
 606         u_quad_t icp6s_badlen;          /* calculated bound mismatch */
 607         /*
 608          * number of responses: this member is inherited from netinet code, but
 609          * for netinet6 code, it is already available in icp6s_outhist[].
 610          */
 611         u_quad_t icp6s_reflect;
 612         u_quad_t icp6s_inhist[256];
 613         u_quad_t icp6s_nd_toomanyopt;   /* too many ND options */
 614         struct icmp6errstat icp6s_outerrhist;
 615 #define icp6s_odst_unreach_noroute \
 616         icp6s_outerrhist.icp6errs_dst_unreach_noroute
 617 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
 618 #define icp6s_odst_unreach_beyondscope \
 619         icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
 620 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
 621 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
 622 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
 623 #define icp6s_otime_exceed_transit \
 624         icp6s_outerrhist.icp6errs_time_exceed_transit
 625 #define icp6s_otime_exceed_reassembly \
 626         icp6s_outerrhist.icp6errs_time_exceed_reassembly
 627 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
 628 #define icp6s_oparamprob_nextheader \
 629         icp6s_outerrhist.icp6errs_paramprob_nextheader
 630 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
 631 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
 632 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
 633         u_quad_t icp6s_pmtuchg;         /* path MTU changes */
 634         u_quad_t icp6s_nd_badopt;       /* bad ND options */
 635         u_quad_t icp6s_badns;           /* bad neighbor solicitation */
 636         u_quad_t icp6s_badna;           /* bad neighbor advertisement */
 637         u_quad_t icp6s_badrs;           /* bad router advertisement */
 638         u_quad_t icp6s_badra;           /* bad router advertisement */
 639         u_quad_t icp6s_badredirect;     /* bad redirect message */
 640 };
 641
 642 /*
 643  * Names for ICMP sysctl objects
 644  */
 645 #define ICMPV6CTL_STATS         1
 646 #define ICMPV6CTL_REDIRACCEPT   2       /* accept/process redirects */
 647 #define ICMPV6CTL_REDIRTIMEOUT  3       /* redirect cache time */
 648 #if 0   /*obsoleted*/
 649 #define ICMPV6CTL_ERRRATELIMIT  5       /* ICMPv6 error rate limitation */
 650 #endif
 651 #define ICMPV6CTL_ND6_PRUNE     6
 652 #define ICMPV6CTL_ND6_DELAY     8
 653 #define ICMPV6CTL_ND6_UMAXTRIES 9
 654 #define ICMPV6CTL_ND6_MMAXTRIES         10
 655 #define ICMPV6CTL_ND6_USELOOPBACK       11
 656 /*#define ICMPV6CTL_ND6_PROXYALL        12      obsoleted, do not reuse here */
 657 #define ICMPV6CTL_NODEINFO      13
 658 #define ICMPV6CTL_ERRPPSLIMIT   14      /* ICMPv6 error pps limitation */
 659 #define ICMPV6CTL_ND6_MAXNUDHINT        15
 660 #define ICMPV6CTL_MTUDISC_HIWAT 16
 661 #define ICMPV6CTL_MTUDISC_LOWAT 17
 662 #define ICMPV6CTL_ND6_DEBUG     18
 663 #define ICMPV6CTL_ND6_DRLIST    19
 664 #define ICMPV6CTL_ND6_PRLIST    20
 665 #define ICMPV6CTL_MAXID         21
 666
 667 #define ICMPV6CTL_NAMES { \
 668         { 0, 0 }, \
 669         { 0, 0 }, \
 670         { "rediraccept", CTLTYPE_INT }, \
 671         { "redirtimeout", CTLTYPE_INT }, \
 672         { 0, 0 }, \
 673         { 0, 0 }, \
 674         { "nd6_prune", CTLTYPE_INT }, \
 675         { 0, 0 }, \
 676         { "nd6_delay", CTLTYPE_INT }, \
 677         { "nd6_umaxtries", CTLTYPE_INT }, \
 678         { "nd6_mmaxtries", CTLTYPE_INT }, \
 679         { "nd6_useloopback", CTLTYPE_INT }, \
 680         { 0, 0 }, \
 681         { "nodeinfo", CTLTYPE_INT }, \
 682         { "errppslimit", CTLTYPE_INT }, \
 683         { "nd6_maxnudhint", CTLTYPE_INT }, \
 684         { "mtudisc_hiwat", CTLTYPE_INT }, \
 685         { "mtudisc_lowat", CTLTYPE_INT }, \
 686         { "nd6_debug", CTLTYPE_INT }, \
 687         { 0, 0 }, \
 688         { 0, 0 }, \
 689 }
 690
 691 #define RTF_PROBEMTU    RTF_PROTO1
 692
 693 #ifdef _KERNEL
 694 struct  rtentry;
 695 struct  rttimer;
 696 struct  in6_multi;
 697
 698 void    icmp6_init (void);
 699 void    icmp6_paramerror (struct mbuf *, int);
 700 void    icmp6_error (struct mbuf *, int, int, int);
 701 int     icmp6_input (struct mbuf **, int *, int);
 702 void    icmp6_fasttimo (void);
 703 void    icmp6_reflect (struct mbuf *, size_t);
 704 void    icmp6_prepare (struct mbuf *);
 705 void    icmp6_redirect_input (struct mbuf *, int);
 706 void    icmp6_redirect_output (struct mbuf *, struct rtentry *);
 707
 708 struct  ip6ctlparam;
 709 void    icmp6_mtudisc_update (struct ip6ctlparam *, int);
 710
 711 /* XXX: is this the right place for these macros? */
 712 #define icmp6_ifstat_inc(ifp, tag) \
 713 do {                                                            \
 714         if (ifp)                                                \
 715                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
 716 } while (0)
 717
 718 #define icmp6_ifoutstat_inc(ifp, type, code) \
 719 do { \
 720                 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
 721                 if (type < ICMP6_INFOMSG_MASK) \
 722                         icmp6_ifstat_inc(ifp, ifs6_out_error); \
 723                 switch (type) { \
 724                  case ICMP6_DST_UNREACH: \
 725                          icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
 726                          if (code == ICMP6_DST_UNREACH_ADMIN) \
 727                                  icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
 728                          break; \
 729                  case ICMP6_PACKET_TOO_BIG: \
 730                          icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
 731                          break; \
 732                  case ICMP6_TIME_EXCEEDED: \
 733                          icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
 734                          break; \
 735                  case ICMP6_PARAM_PROB: \
 736                          icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
 737                          break; \
 738                  case ICMP6_ECHO_REQUEST: \
 739                          icmp6_ifstat_inc(ifp, ifs6_out_echo); \
 740                          break; \
 741                  case ICMP6_ECHO_REPLY: \
 742                          icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
 743                          break; \
 744                  case MLD_LISTENER_QUERY: \
 745                          icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
 746                          break; \
 747                  case MLD_LISTENER_REPORT: \
 748                          icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
 749                          break; \
 750                  case MLD_LISTENER_DONE: \
 751                          icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
 752                          break; \
 753                  case ND_ROUTER_SOLICIT: \
 754                          icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
 755                          break; \
 756                  case ND_ROUTER_ADVERT: \
 757                          icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
 758                          break; \
 759                  case ND_NEIGHBOR_SOLICIT: \
 760                          icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
 761                          break; \
 762                  case ND_NEIGHBOR_ADVERT: \
 763                          icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
 764                          break; \
 765                  case ND_REDIRECT: \
 766                          icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
 767                          break; \
 768                 } \
 769 } while (0)
 770
 771 extern int      icmp6_rediraccept;      /* accept/process redirects */
 772 extern int      icmp6_redirtimeout;     /* cache time for redirect routes */
 773 #endif /* _KERNEL */
 774
 775 #endif /* not _NETINET_ICMP6_H_ */