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 /*      $DragonFly: src/sys/netinet/icmp6.h,v 1.8 2008/09/04 09:08:22 hasso Exp $       */
   3 /*      $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $  */
   4
   5 /*
   6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. Neither the name of the project nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * Copyright (c) 1982, 1986, 1993
  36  *      The Regents of the University of California.  All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by the University of
  49  *      California, Berkeley and its contributors.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
  67  */
  68
  69 #ifndef _NETINET_ICMP6_H_
  70 #define _NETINET_ICMP6_H_
  71
  72 #ifndef _SYS_TYPES_H_
  73 #include <sys/types.h>
  74 #endif
  75 #ifndef _NETINET6_IN6_H_
  76 #include <netinet/in.h>
  77 #endif
  78 #ifndef _MACHINE_ENDIAN_H_
  79 #include <machine/endian.h>
  80 #endif
  81
  82 #define ICMPV6_PLD_MAXLEN       1232    /* IPV6_MMTU - sizeof(struct ip6_hdr)
  83                                            - sizeof(struct icmp6_hdr) */
  84
  85 struct icmp6_hdr {
  86         u_int8_t        icmp6_type;     /* type field */
  87         u_int8_t        icmp6_code;     /* code field */
  88         u_int16_t       icmp6_cksum;    /* checksum field */
  89         union {
  90                 u_int32_t       icmp6_un_data32[1]; /* type-specific field */
  91                 u_int16_t       icmp6_un_data16[2]; /* type-specific field */
  92                 u_int8_t        icmp6_un_data8[4];  /* type-specific field */
  93         } icmp6_dataun;
  94 } __attribute__((__packed__));
  95
  96 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
  97 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
  98 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
  99 #define icmp6_pptr      icmp6_data32[0]         /* parameter prob */
 100 #define icmp6_mtu       icmp6_data32[0]         /* packet too big */
 101 #define icmp6_id        icmp6_data16[0]         /* echo request/reply */
 102 #define icmp6_seq       icmp6_data16[1]         /* echo request/reply */
 103 #define icmp6_maxdelay  icmp6_data16[0]         /* mcast group membership */
 104
 105 #define ICMP6_DST_UNREACH               1       /* dest unreachable, codes: */
 106 #define ICMP6_PACKET_TOO_BIG            2       /* packet too big */
 107 #define ICMP6_TIME_EXCEEDED             3       /* time exceeded, code: */
 108 #define ICMP6_PARAM_PROB                4       /* ip6 header bad */
 109
 110 #define ICMP6_ECHO_REQUEST              128     /* echo service */
 111 #define ICMP6_ECHO_REPLY                129     /* echo reply */
 112 #define ICMP6_MEMBERSHIP_QUERY          130     /* group membership query */
 113 #define MLD_LISTENER_QUERY              130     /* multicast listener query */
 114 #define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */
 115 #define MLD_LISTENER_REPORT             131     /* multicast listener report */
 116 #define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */
 117 #define MLD_LISTENER_DONE               132     /* multicast listener done */
 118 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* defined in RFC3542 */
 119
 120 #ifndef _KERNEL
 121 /* the followings are for backward compatibility to old KAME apps. */
 122 #define MLD6_LISTENER_QUERY     MLD_LISTENER_QUERY
 123 #define MLD6_LISTENER_REPORT    MLD_LISTENER_REPORT
 124 #define MLD6_LISTENER_DONE      MLD_LISTENER_DONE
 125 #endif
 126
 127 #define ND_ROUTER_SOLICIT               133     /* router solicitation */
 128 #define ND_ROUTER_ADVERT                134     /* router advertisment */
 129 #define ND_NEIGHBOR_SOLICIT             135     /* neighbor solicitation */
 130 #define ND_NEIGHBOR_ADVERT              136     /* neighbor advertisment */
 131 #define ND_REDIRECT                     137     /* redirect */
 132
 133 #define ICMP6_ROUTER_RENUMBERING        138     /* router renumbering */
 134
 135 #define ICMP6_WRUREQUEST                139     /* who are you request */
 136 #define ICMP6_WRUREPLY                  140     /* who are you reply */
 137 #define ICMP6_FQDN_QUERY                139     /* FQDN query */
 138 #define ICMP6_FQDN_REPLY                140     /* FQDN reply */
 139 #define ICMP6_NI_QUERY                  139     /* node information request */
 140 #define ICMP6_NI_REPLY                  140     /* node information reply */
 141
 142 /* The definitions below are experimental. TBA */
 143 #define MLD_MTRACE_RESP                 200     /* mtrace resp (to sender) */
 144 #define MLD_MTRACE                      201     /* mtrace messages */
 145
 146 #define ICMP6_HADISCOV_REQUEST          202     /* XXX To be defined */
 147 #define ICMP6_HADISCOV_REPLY            203     /* XXX To be defined */
 148
 149 #ifndef _KERNEL
 150 #define MLD6_MTRACE_RESP        MLD_MTRACE_RESP
 151 #define MLD6_MTRACE             MLD_MTRACE
 152 #endif
 153
 154 #define ICMP6_MAXTYPE                   203
 155
 156 #define ICMP6_DST_UNREACH_NOROUTE       0       /* no route to destination */
 157 #define ICMP6_DST_UNREACH_ADMIN         1       /* administratively prohibited */
 158 #define ICMP6_DST_UNREACH_NOTNEIGHBOR   2       /* not a neighbor(obsolete) */
 159 #define ICMP6_DST_UNREACH_BEYONDSCOPE   2       /* beyond scope of source address */
 160 #define ICMP6_DST_UNREACH_ADDR          3       /* address unreachable */
 161 #define ICMP6_DST_UNREACH_NOPORT        4       /* port unreachable */
 162
 163 #define ICMP6_TIME_EXCEED_TRANSIT       0       /* ttl==0 in transit */
 164 #define ICMP6_TIME_EXCEED_REASSEMBLY    1       /* ttl==0 in reass */
 165
 166 #define ICMP6_PARAMPROB_HEADER          0       /* erroneous header field */
 167 #define ICMP6_PARAMPROB_NEXTHEADER      1       /* unrecognized next header */
 168 #define ICMP6_PARAMPROB_OPTION          2       /* unrecognized option */
 169
 170 #define ICMP6_INFOMSG_MASK              0x80    /* all informational messages */
 171
 172 #define ICMP6_NI_SUBJ_IPV6      0       /* Query Subject is an IPv6 address */
 173 #define ICMP6_NI_SUBJ_FQDN      1       /* Query Subject is a Domain name */
 174 #define ICMP6_NI_SUBJ_IPV4      2       /* Query Subject is an IPv4 address */
 175
 176 #define ICMP6_NI_SUCCESS        0       /* node information successful reply */
 177 #define ICMP6_NI_REFUSED        1       /* node information request is refused */
 178 #define ICMP6_NI_UNKNOWN        2       /* unknown Qtype */
 179
 180 #define ICMP6_ROUTER_RENUMBERING_COMMAND  0     /* rr command */
 181 #define ICMP6_ROUTER_RENUMBERING_RESULT   1     /* rr result */
 182 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255     /* rr seq num reset */
 183
 184 /* Used in kernel only */
 185 #define ND_REDIRECT_ONLINK      0       /* redirect to an on-link node */
 186 #define ND_REDIRECT_ROUTER      1       /* redirect to a better router */
 187
 188 /*
 189  * Multicast Listener Discovery
 190  */
 191 struct mld_hdr {
 192         struct icmp6_hdr        mld_icmp6_hdr;
 193         struct in6_addr         mld_addr; /* multicast address */
 194 } __attribute__((__packed__));
 195
 196 /* definitions to provide backward compatibility to old KAME applications */
 197 #ifndef _KERNEL
 198 #define mld6_hdr        mld_hdr
 199 #define mld6_type       mld_type
 200 #define mld6_code       mld_code
 201 #define mld6_cksum      mld_cksum
 202 #define mld6_maxdelay   mld_maxdelay
 203 #define mld6_reserved   mld_reserved
 204 #define mld6_addr       mld_addr
 205 #endif
 206
 207 /* shortcut macro definitions */
 208 #define mld_type        mld_icmp6_hdr.icmp6_type
 209 #define mld_code        mld_icmp6_hdr.icmp6_code
 210 #define mld_cksum       mld_icmp6_hdr.icmp6_cksum
 211 #define mld_maxdelay    mld_icmp6_hdr.icmp6_data16[0]
 212 #define mld_reserved    mld_icmp6_hdr.icmp6_data16[1]
 213
 214 /*
 215  * Neighbor Discovery
 216  */
 217
 218 struct nd_router_solicit {      /* router solicitation */
 219         struct icmp6_hdr        nd_rs_hdr;
 220         /* could be followed by options */
 221 } __attribute__((__packed__));
 222
 223 #define nd_rs_type      nd_rs_hdr.icmp6_type
 224 #define nd_rs_code      nd_rs_hdr.icmp6_code
 225 #define nd_rs_cksum     nd_rs_hdr.icmp6_cksum
 226 #define nd_rs_reserved  nd_rs_hdr.icmp6_data32[0]
 227
 228 struct nd_router_advert {       /* router advertisement */
 229         struct icmp6_hdr        nd_ra_hdr;
 230         u_int32_t               nd_ra_reachable;        /* reachable time */
 231         u_int32_t               nd_ra_retransmit;       /* retransmit timer */
 232         /* could be followed by options */
 233 } __attribute__((__packed__));
 234
 235 #define nd_ra_type              nd_ra_hdr.icmp6_type
 236 #define nd_ra_code              nd_ra_hdr.icmp6_code
 237 #define nd_ra_cksum             nd_ra_hdr.icmp6_cksum
 238 #define nd_ra_curhoplimit       nd_ra_hdr.icmp6_data8[0]
 239 #define nd_ra_flags_reserved    nd_ra_hdr.icmp6_data8[1]
 240 #define ND_RA_FLAG_MANAGED      0x80
 241 #define ND_RA_FLAG_OTHER        0x40
 242 #define ND_RA_FLAG_HA           0x20
 243
 244 /*
 245  * Router preference values based on draft-draves-ipngwg-router-selection-01.
 246  * These are non-standard definitions.
 247  */
 248 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
 249
 250 #define ND_RA_FLAG_RTPREF_HIGH  0x08 /* 00001000 */
 251 #define ND_RA_FLAG_RTPREF_MEDIUM        0x00 /* 00000000 */
 252 #define ND_RA_FLAG_RTPREF_LOW   0x18 /* 00011000 */
 253 #define ND_RA_FLAG_RTPREF_RSV   0x10 /* 00010000 */
 254
 255 #define nd_ra_router_lifetime   nd_ra_hdr.icmp6_data16[1]
 256
 257 struct nd_neighbor_solicit {    /* neighbor solicitation */
 258         struct icmp6_hdr        nd_ns_hdr;
 259         struct in6_addr         nd_ns_target;   /*target address */
 260         /* could be followed by options */
 261 } __attribute__((__packed__));
 262
 263 #define nd_ns_type              nd_ns_hdr.icmp6_type
 264 #define nd_ns_code              nd_ns_hdr.icmp6_code
 265 #define nd_ns_cksum             nd_ns_hdr.icmp6_cksum
 266 #define nd_ns_reserved          nd_ns_hdr.icmp6_data32[0]
 267
 268 struct nd_neighbor_advert {     /* neighbor advertisement */
 269         struct icmp6_hdr        nd_na_hdr;
 270         struct in6_addr         nd_na_target;   /* target address */
 271         /* could be followed by options */
 272 } __attribute__((__packed__));
 273
 274 #define nd_na_type              nd_na_hdr.icmp6_type
 275 #define nd_na_code              nd_na_hdr.icmp6_code
 276 #define nd_na_cksum             nd_na_hdr.icmp6_cksum
 277 #define nd_na_flags_reserved    nd_na_hdr.icmp6_data32[0]
 278 #if _BYTE_ORDER == _BIG_ENDIAN
 279 #define ND_NA_FLAG_ROUTER               0x80000000
 280 #define ND_NA_FLAG_SOLICITED            0x40000000
 281 #define ND_NA_FLAG_OVERRIDE             0x20000000
 282 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 283 #define ND_NA_FLAG_ROUTER               0x80
 284 #define ND_NA_FLAG_SOLICITED            0x40
 285 #define ND_NA_FLAG_OVERRIDE             0x20
 286 #else
 287 #error "Byte order not implemented"
 288 #endif
 289
 290 struct nd_redirect {            /* redirect */
 291         struct icmp6_hdr        nd_rd_hdr;
 292         struct in6_addr         nd_rd_target;   /* target address */
 293         struct in6_addr         nd_rd_dst;      /* destination address */
 294         /* could be followed by options */
 295 } __attribute__((__packed__));
 296
 297 #define nd_rd_type              nd_rd_hdr.icmp6_type
 298 #define nd_rd_code              nd_rd_hdr.icmp6_code
 299 #define nd_rd_cksum             nd_rd_hdr.icmp6_cksum
 300 #define nd_rd_reserved          nd_rd_hdr.icmp6_data32[0]
 301
 302 struct nd_opt_hdr {             /* Neighbor discovery option header */
 303         u_int8_t        nd_opt_type;
 304         u_int8_t        nd_opt_len;
 305         /* followed by option specific data*/
 306 } __attribute__((__packed__));
 307
 308 #define ND_OPT_SOURCE_LINKADDR          1
 309 #define ND_OPT_TARGET_LINKADDR          2
 310 #define ND_OPT_PREFIX_INFORMATION       3
 311 #define ND_OPT_REDIRECTED_HEADER        4
 312 #define ND_OPT_MTU                      5
 313
 314 #define ND_OPT_ROUTE_INFO               200     /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
 315
 316 struct nd_opt_prefix_info {     /* prefix information */
 317         u_int8_t        nd_opt_pi_type;
 318         u_int8_t        nd_opt_pi_len;
 319         u_int8_t        nd_opt_pi_prefix_len;
 320         u_int8_t        nd_opt_pi_flags_reserved;
 321         u_int32_t       nd_opt_pi_valid_time;
 322         u_int32_t       nd_opt_pi_preferred_time;
 323         u_int32_t       nd_opt_pi_reserved2;
 324         struct in6_addr nd_opt_pi_prefix;
 325 } __attribute__((__packed__));
 326
 327 #define ND_OPT_PI_FLAG_ONLINK           0x80
 328 #define ND_OPT_PI_FLAG_AUTO             0x40
 329
 330 struct nd_opt_rd_hdr {          /* redirected header */
 331         u_int8_t        nd_opt_rh_type;
 332         u_int8_t        nd_opt_rh_len;
 333         u_int16_t       nd_opt_rh_reserved1;
 334         u_int32_t       nd_opt_rh_reserved2;
 335         /* followed by IP header and data */
 336 } __attribute__((__packed__));
 337
 338 struct nd_opt_mtu {             /* MTU option */
 339         u_int8_t        nd_opt_mtu_type;
 340         u_int8_t        nd_opt_mtu_len;
 341         u_int16_t       nd_opt_mtu_reserved;
 342         u_int32_t       nd_opt_mtu_mtu;
 343 } __attribute__((__packed__));
 344
 345 struct nd_opt_route_info {      /* route info */
 346         u_int8_t        nd_opt_rti_type;
 347         u_int8_t        nd_opt_rti_len;
 348         u_int8_t        nd_opt_rti_prefixlen;
 349         u_int8_t        nd_opt_rti_flags;
 350         u_int32_t       nd_opt_rti_lifetime;
 351         /* prefix follows */
 352 } __attribute__((__packed__));
 353
 354 /*
 355  * icmp6 namelookup
 356  */
 357
 358 struct icmp6_namelookup {
 359         struct icmp6_hdr        icmp6_nl_hdr;
 360         u_int8_t        icmp6_nl_nonce[8];
 361         int32_t         icmp6_nl_ttl;
 362 #if 0
 363         u_int8_t        icmp6_nl_len;
 364         u_int8_t        icmp6_nl_name[3];
 365 #endif
 366         /* could be followed by options */
 367 } __attribute__((__packed__));
 368
 369 /*
 370  * icmp6 node information
 371  */
 372 struct icmp6_nodeinfo {
 373         struct icmp6_hdr icmp6_ni_hdr;
 374         u_int8_t icmp6_ni_nonce[8];
 375         /* could be followed by reply data */
 376 } __attribute__((__packed__));
 377
 378 #define ni_type         icmp6_ni_hdr.icmp6_type
 379 #define ni_code         icmp6_ni_hdr.icmp6_code
 380 #define ni_cksum        icmp6_ni_hdr.icmp6_cksum
 381 #define ni_qtype        icmp6_ni_hdr.icmp6_data16[0]
 382 #define ni_flags        icmp6_ni_hdr.icmp6_data16[1]
 383
 384 #define NI_QTYPE_NOOP           0 /* NOOP  */
 385 #define NI_QTYPE_SUPTYPES       1 /* Supported Qtypes */
 386 #define NI_QTYPE_FQDN           2 /* FQDN (draft 04) */
 387 #define NI_QTYPE_DNSNAME        2 /* DNS Name */
 388 #define NI_QTYPE_NODEADDR       3 /* Node Addresses */
 389 #define NI_QTYPE_IPV4ADDR       4 /* IPv4 Addresses */
 390
 391 #if _BYTE_ORDER == _BIG_ENDIAN
 392 #define NI_SUPTYPE_FLAG_COMPRESS        0x1
 393 #define NI_FQDN_FLAG_VALIDTTL           0x1
 394 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 395 #define NI_SUPTYPE_FLAG_COMPRESS        0x0100
 396 #define NI_FQDN_FLAG_VALIDTTL           0x0100
 397 #else
 398 #error "Byte order not implemented"
 399 #endif
 400
 401 #ifdef NAME_LOOKUPS_04
 402 #if _BYTE_ORDER == _BIG_ENDIAN
 403 #define NI_NODEADDR_FLAG_LINKLOCAL      0x1
 404 #define NI_NODEADDR_FLAG_SITELOCAL      0x2
 405 #define NI_NODEADDR_FLAG_GLOBAL         0x4
 406 #define NI_NODEADDR_FLAG_ALL            0x8
 407 #define NI_NODEADDR_FLAG_TRUNCATE       0x10
 408 #define NI_NODEADDR_FLAG_ANYCAST        0x20 /* just experimental. not in spec */
 409 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 410 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0100
 411 #define NI_NODEADDR_FLAG_SITELOCAL      0x0200
 412 #define NI_NODEADDR_FLAG_GLOBAL         0x0400
 413 #define NI_NODEADDR_FLAG_ALL            0x0800
 414 #define NI_NODEADDR_FLAG_TRUNCATE       0x1000
 415 #define NI_NODEADDR_FLAG_ANYCAST        0x2000 /* just experimental. not in spec */
 416 #else
 417 #error "Byte order not implemented"
 418 #endif
 419 #else  /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
 420 #if _BYTE_ORDER == _BIG_ENDIAN
 421 #define NI_NODEADDR_FLAG_TRUNCATE       0x1
 422 #define NI_NODEADDR_FLAG_ALL            0x2
 423 #define NI_NODEADDR_FLAG_COMPAT         0x4
 424 #define NI_NODEADDR_FLAG_LINKLOCAL      0x8
 425 #define NI_NODEADDR_FLAG_SITELOCAL      0x10
 426 #define NI_NODEADDR_FLAG_GLOBAL         0x20
 427 #define NI_NODEADDR_FLAG_ANYCAST        0x40 /* just experimental. not in spec */
 428 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 429 #define NI_NODEADDR_FLAG_TRUNCATE       0x0100
 430 #define NI_NODEADDR_FLAG_ALL            0x0200
 431 #define NI_NODEADDR_FLAG_COMPAT         0x0400
 432 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0800
 433 #define NI_NODEADDR_FLAG_SITELOCAL      0x1000
 434 #define NI_NODEADDR_FLAG_GLOBAL         0x2000
 435 #define NI_NODEADDR_FLAG_ANYCAST        0x4000 /* just experimental. not in spec */
 436 #else
 437 #error "Byte order not implemented"
 438 #endif
 439 #endif
 440
 441 struct ni_reply_fqdn {
 442         u_int32_t ni_fqdn_ttl;  /* TTL */
 443         u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
 444         u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
 445 } __attribute__((__packed__));
 446
 447 /*
 448  * Router Renumbering. as router-renum-08.txt
 449  */
 450 struct icmp6_router_renum {     /* router renumbering header */
 451         struct icmp6_hdr        rr_hdr;
 452         u_int8_t        rr_segnum;
 453         u_int8_t        rr_flags;
 454         u_int16_t       rr_maxdelay;
 455         u_int32_t       rr_reserved;
 456 } __attribute__((__packed__));
 457
 458 #define ICMP6_RR_FLAGS_TEST             0x80
 459 #define ICMP6_RR_FLAGS_REQRESULT        0x40
 460 #define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
 461 #define ICMP6_RR_FLAGS_SPECSITE         0x10
 462 #define ICMP6_RR_FLAGS_PREVDONE         0x08
 463
 464 #define rr_type         rr_hdr.icmp6_type
 465 #define rr_code         rr_hdr.icmp6_code
 466 #define rr_cksum        rr_hdr.icmp6_cksum
 467 #define rr_seqnum       rr_hdr.icmp6_data32[0]
 468
 469 struct rr_pco_match {           /* match prefix part */
 470         u_int8_t        rpm_code;
 471         u_int8_t        rpm_len;
 472         u_int8_t        rpm_ordinal;
 473         u_int8_t        rpm_matchlen;
 474         u_int8_t        rpm_minlen;
 475         u_int8_t        rpm_maxlen;
 476         u_int16_t       rpm_reserved;
 477         struct  in6_addr        rpm_prefix;
 478 } __attribute__((__packed__));
 479
 480 #define RPM_PCO_ADD             1
 481 #define RPM_PCO_CHANGE          2
 482 #define RPM_PCO_SETGLOBAL       3
 483 #define RPM_PCO_MAX             4
 484
 485 struct rr_pco_use {             /* use prefix part */
 486         u_int8_t        rpu_uselen;
 487         u_int8_t        rpu_keeplen;
 488         u_int8_t        rpu_ramask;
 489         u_int8_t        rpu_raflags;
 490         u_int32_t       rpu_vltime;
 491         u_int32_t       rpu_pltime;
 492         u_int32_t       rpu_flags;
 493         struct  in6_addr rpu_prefix;
 494 } __attribute__((__packed__));
 495 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x80
 496 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x40
 497
 498 #if _BYTE_ORDER == _BIG_ENDIAN
 499 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80000000
 500 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40000000
 501 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 502 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80
 503 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40
 504 #else
 505 #error "Byte order not implemented"
 506 #endif
 507
 508 struct rr_result {              /* router renumbering result message */
 509         u_int16_t       rrr_flags;
 510         u_int8_t        rrr_ordinal;
 511         u_int8_t        rrr_matchedlen;
 512         u_int32_t       rrr_ifid;
 513         struct  in6_addr rrr_prefix;
 514 } __attribute__((__packed__));
 515 #if _BYTE_ORDER == _BIG_ENDIAN
 516 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0002
 517 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0001
 518 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 519 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0200
 520 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0100
 521 #else
 522 #error "Byte order not implemented"
 523 #endif
 524
 525 /*
 526  * icmp6 filter structures.
 527  */
 528
 529 struct icmp6_filter {
 530         u_int32_t icmp6_filt[8];
 531 };
 532
 533 #ifdef _KERNEL
 534 #define ICMP6_FILTER_SETPASSALL(filterp) \
 535 do {                                                            \
 536         int i; u_char *p;                                       \
 537         p = (u_char *)filterp;                                  \
 538         for (i = 0; i < sizeof(struct icmp6_filter); i++)       \
 539                 p[i] = 0xff;                                    \
 540 } while (0)
 541 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 542         bzero(filterp, sizeof(struct icmp6_filter))
 543 #else /* _KERNEL */
 544 #define ICMP6_FILTER_SETPASSALL(filterp) \
 545         memset(filterp, 0xff, sizeof(struct icmp6_filter))
 546 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 547         memset(filterp, 0x00, sizeof(struct icmp6_filter))
 548 #endif /* _KERNEL */
 549
 550 #define ICMP6_FILTER_SETPASS(type, filterp) \
 551         (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
 552 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
 553         (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
 554 #define ICMP6_FILTER_WILLPASS(type, filterp) \
 555         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
 556 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
 557         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
 558
 559 /*
 560  * Variables related to this implementation
 561  * of the internet control message protocol version 6.
 562  */
 563 struct icmp6errstat {
 564         u_quad_t icp6errs_dst_unreach_noroute;
 565         u_quad_t icp6errs_dst_unreach_admin;
 566         u_quad_t icp6errs_dst_unreach_beyondscope;
 567         u_quad_t icp6errs_dst_unreach_addr;
 568         u_quad_t icp6errs_dst_unreach_noport;
 569         u_quad_t icp6errs_packet_too_big;
 570         u_quad_t icp6errs_time_exceed_transit;
 571         u_quad_t icp6errs_time_exceed_reassembly;
 572         u_quad_t icp6errs_paramprob_header;
 573         u_quad_t icp6errs_paramprob_nextheader;
 574         u_quad_t icp6errs_paramprob_option;
 575         u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
 576         u_quad_t icp6errs_unknown;
 577 };
 578
 579 struct icmp6stat {
 580 /* statistics related to icmp6 packets generated */
 581         u_quad_t icp6s_error;           /* # of calls to icmp6_error */
 582         u_quad_t icp6s_canterror;       /* no error 'cuz old was icmp */
 583         u_quad_t icp6s_toofreq;         /* no error 'cuz rate limitation */
 584         u_quad_t icp6s_outhist[256];
 585 /* statistics related to input message processed */
 586         u_quad_t icp6s_badcode;         /* icmp6_code out of range */
 587         u_quad_t icp6s_tooshort;        /* packet < sizeof(struct icmp6_hdr) */
 588         u_quad_t icp6s_checksum;        /* bad checksum */
 589         u_quad_t icp6s_badlen;          /* calculated bound mismatch */
 590         /*
 591          * number of responses: this member is inherited from netinet code, but
 592          * for netinet6 code, it is already available in icp6s_outhist[].
 593          */
 594         u_quad_t icp6s_reflect;
 595         u_quad_t icp6s_inhist[256];
 596         u_quad_t icp6s_nd_toomanyopt;   /* too many ND options */
 597         struct icmp6errstat icp6s_outerrhist;
 598 #define icp6s_odst_unreach_noroute \
 599         icp6s_outerrhist.icp6errs_dst_unreach_noroute
 600 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
 601 #define icp6s_odst_unreach_beyondscope \
 602         icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
 603 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
 604 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
 605 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
 606 #define icp6s_otime_exceed_transit \
 607         icp6s_outerrhist.icp6errs_time_exceed_transit
 608 #define icp6s_otime_exceed_reassembly \
 609         icp6s_outerrhist.icp6errs_time_exceed_reassembly
 610 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
 611 #define icp6s_oparamprob_nextheader \
 612         icp6s_outerrhist.icp6errs_paramprob_nextheader
 613 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
 614 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
 615 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
 616         u_quad_t icp6s_pmtuchg;         /* path MTU changes */
 617         u_quad_t icp6s_nd_badopt;       /* bad ND options */
 618         u_quad_t icp6s_badns;           /* bad neighbor solicitation */
 619         u_quad_t icp6s_badna;           /* bad neighbor advertisement */
 620         u_quad_t icp6s_badrs;           /* bad router advertisement */
 621         u_quad_t icp6s_badra;           /* bad router advertisement */
 622         u_quad_t icp6s_badredirect;     /* bad redirect message */
 623 };
 624
 625 /*
 626  * Names for ICMP sysctl objects
 627  */
 628 #define ICMPV6CTL_STATS         1
 629 #define ICMPV6CTL_REDIRACCEPT   2       /* accept/process redirects */
 630 #define ICMPV6CTL_REDIRTIMEOUT  3       /* redirect cache time */
 631 #if 0   /*obsoleted*/
 632 #define ICMPV6CTL_ERRRATELIMIT  5       /* ICMPv6 error rate limitation */
 633 #endif
 634 #define ICMPV6CTL_ND6_PRUNE     6
 635 #define ICMPV6CTL_ND6_DELAY     8
 636 #define ICMPV6CTL_ND6_UMAXTRIES 9
 637 #define ICMPV6CTL_ND6_MMAXTRIES         10
 638 #define ICMPV6CTL_ND6_USELOOPBACK       11
 639 /*#define ICMPV6CTL_ND6_PROXYALL        12      obsoleted, do not reuse here */
 640 #define ICMPV6CTL_NODEINFO      13
 641 #define ICMPV6CTL_ERRPPSLIMIT   14      /* ICMPv6 error pps limitation */
 642 #define ICMPV6CTL_ND6_MAXNUDHINT        15
 643 #define ICMPV6CTL_MTUDISC_HIWAT 16
 644 #define ICMPV6CTL_MTUDISC_LOWAT 17
 645 #define ICMPV6CTL_ND6_DEBUG     18
 646 #define ICMPV6CTL_ND6_DRLIST    19
 647 #define ICMPV6CTL_ND6_PRLIST    20
 648 #define ICMPV6CTL_MAXID         21
 649
 650 #define ICMPV6CTL_NAMES { \
 651         { 0, 0 }, \
 652         { 0, 0 }, \
 653         { "rediraccept", CTLTYPE_INT }, \
 654         { "redirtimeout", CTLTYPE_INT }, \
 655         { 0, 0 }, \
 656         { 0, 0 }, \
 657         { "nd6_prune", CTLTYPE_INT }, \
 658         { 0, 0 }, \
 659         { "nd6_delay", CTLTYPE_INT }, \
 660         { "nd6_umaxtries", CTLTYPE_INT }, \
 661         { "nd6_mmaxtries", CTLTYPE_INT }, \
 662         { "nd6_useloopback", CTLTYPE_INT }, \
 663         { 0, 0 }, \
 664         { "nodeinfo", CTLTYPE_INT }, \
 665         { "errppslimit", CTLTYPE_INT }, \
 666         { "nd6_maxnudhint", CTLTYPE_INT }, \
 667         { "mtudisc_hiwat", CTLTYPE_INT }, \
 668         { "mtudisc_lowat", CTLTYPE_INT }, \
 669         { "nd6_debug", CTLTYPE_INT }, \
 670         { 0, 0 }, \
 671         { 0, 0 }, \
 672 }
 673
 674 #define RTF_PROBEMTU    RTF_PROTO1
 675
 676 #ifdef _KERNEL
 677 # ifdef __STDC__
 678 struct  rtentry;
 679 struct  rttimer;
 680 struct  in6_multi;
 681 # endif
 682 void    icmp6_init (void);
 683 void    icmp6_paramerror (struct mbuf *, int);
 684 void    icmp6_error (struct mbuf *, int, int, int);
 685 int     icmp6_input (struct mbuf **, int *, int);
 686 void    icmp6_fasttimo (void);
 687 void    icmp6_reflect (struct mbuf *, size_t);
 688 void    icmp6_prepare (struct mbuf *);
 689 void    icmp6_redirect_input (struct mbuf *, int);
 690 void    icmp6_redirect_output (struct mbuf *, struct rtentry *);
 691
 692 struct  ip6ctlparam;
 693 void    icmp6_mtudisc_update (struct ip6ctlparam *, int);
 694
 695 /* XXX: is this the right place for these macros? */
 696 #define icmp6_ifstat_inc(ifp, tag) \
 697 do {                                                            \
 698         if (ifp)                                                \
 699                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
 700 } while (0)
 701
 702 #define icmp6_ifoutstat_inc(ifp, type, code) \
 703 do { \
 704                 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
 705                 if (type < ICMP6_INFOMSG_MASK) \
 706                         icmp6_ifstat_inc(ifp, ifs6_out_error); \
 707                 switch (type) { \
 708                  case ICMP6_DST_UNREACH: \
 709                          icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
 710                          if (code == ICMP6_DST_UNREACH_ADMIN) \
 711                                  icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
 712                          break; \
 713                  case ICMP6_PACKET_TOO_BIG: \
 714                          icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
 715                          break; \
 716                  case ICMP6_TIME_EXCEEDED: \
 717                          icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
 718                          break; \
 719                  case ICMP6_PARAM_PROB: \
 720                          icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
 721                          break; \
 722                  case ICMP6_ECHO_REQUEST: \
 723                          icmp6_ifstat_inc(ifp, ifs6_out_echo); \
 724                          break; \
 725                  case ICMP6_ECHO_REPLY: \
 726                          icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
 727                          break; \
 728                  case MLD_LISTENER_QUERY: \
 729                          icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
 730                          break; \
 731                  case MLD_LISTENER_REPORT: \
 732                          icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
 733                          break; \
 734                  case MLD_LISTENER_DONE: \
 735                          icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
 736                          break; \
 737                  case ND_ROUTER_SOLICIT: \
 738                          icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
 739                          break; \
 740                  case ND_ROUTER_ADVERT: \
 741                          icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
 742                          break; \
 743                  case ND_NEIGHBOR_SOLICIT: \
 744                          icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
 745                          break; \
 746                  case ND_NEIGHBOR_ADVERT: \
 747                          icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
 748                          break; \
 749                  case ND_REDIRECT: \
 750                          icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
 751                          break; \
 752                 } \
 753 } while (0)
 754
 755 extern int      icmp6_rediraccept;      /* accept/process redirects */
 756 extern int      icmp6_redirtimeout;     /* cache time for redirect routes */
 757 #endif /* _KERNEL */
 758
 759 #endif /* not _NETINET_ICMP6_H_ */