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. 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  *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
  62  */
  63
  64 #ifndef _NETINET_ICMP6_H_
  65 #define _NETINET_ICMP6_H_
  66
  67 #ifndef _SYS_TYPES_H_
  68 #include <sys/types.h>
  69 #endif
  70 #ifndef _NETINET6_IN6_H_
  71 #include <netinet/in.h>
  72 #endif
  73 #include <machine/endian.h>
  74
  75 #define ICMPV6_PLD_MAXLEN       1232    /* IPV6_MMTU - sizeof(struct ip6_hdr)
  76                                            - sizeof(struct icmp6_hdr) */
  77
  78 struct icmp6_hdr {
  79         u_int8_t        icmp6_type;     /* type field */
  80         u_int8_t        icmp6_code;     /* code field */
  81         u_int16_t       icmp6_cksum;    /* checksum field */
  82         union {
  83                 u_int32_t       icmp6_un_data32[1]; /* type-specific field */
  84                 u_int16_t       icmp6_un_data16[2]; /* type-specific field */
  85                 u_int8_t        icmp6_un_data8[4];  /* type-specific field */
  86         } icmp6_dataun;
  87 } __attribute__((__packed__));
  88
  89 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
  90 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
  91 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
  92 #define icmp6_pptr      icmp6_data32[0]         /* parameter prob */
  93 #define icmp6_mtu       icmp6_data32[0]         /* packet too big */
  94 #define icmp6_id        icmp6_data16[0]         /* echo request/reply */
  95 #define icmp6_seq       icmp6_data16[1]         /* echo request/reply */
  96 #define icmp6_maxdelay  icmp6_data16[0]         /* mcast group membership */
  97
  98 #define ICMP6_DST_UNREACH               1       /* dest unreachable, codes: */
  99 #define ICMP6_PACKET_TOO_BIG            2       /* packet too big */
 100 #define ICMP6_TIME_EXCEEDED             3       /* time exceeded, code: */
 101 #define ICMP6_PARAM_PROB                4       /* ip6 header bad */
 102
 103 #define ICMP6_ECHO_REQUEST              128     /* echo service */
 104 #define ICMP6_ECHO_REPLY                129     /* echo reply */
 105 #define ICMP6_MEMBERSHIP_QUERY          130     /* group membership query */
 106 #define MLD_LISTENER_QUERY              130     /* multicast listener query */
 107 #define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */
 108 #define MLD_LISTENER_REPORT             131     /* multicast listener report */
 109 #define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */
 110 #define MLD_LISTENER_DONE               132     /* multicast listener done */
 111 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* defined in RFC3542 */
 112
 113 #ifndef _KERNEL
 114 /* the followings are for backward compatibility to old KAME apps. */
 115 #define MLD6_LISTENER_QUERY     MLD_LISTENER_QUERY
 116 #define MLD6_LISTENER_REPORT    MLD_LISTENER_REPORT
 117 #define MLD6_LISTENER_DONE      MLD_LISTENER_DONE
 118 #endif
 119
 120 #define ND_ROUTER_SOLICIT               133     /* router solicitation */
 121 #define ND_ROUTER_ADVERT                134     /* router advertisment */
 122 #define ND_NEIGHBOR_SOLICIT             135     /* neighbor solicitation */
 123 #define ND_NEIGHBOR_ADVERT              136     /* neighbor advertisment */
 124 #define ND_REDIRECT                     137     /* redirect */
 125
 126 #define ICMP6_ROUTER_RENUMBERING        138     /* router renumbering */
 127
 128 #define ICMP6_WRUREQUEST                139     /* who are you request */
 129 #define ICMP6_WRUREPLY                  140     /* who are you reply */
 130 #define ICMP6_FQDN_QUERY                139     /* FQDN query */
 131 #define ICMP6_FQDN_REPLY                140     /* FQDN reply */
 132 #define ICMP6_NI_QUERY                  139     /* node information request */
 133 #define ICMP6_NI_REPLY                  140     /* node information reply */
 134
 135 /* The definitions below are experimental. TBA */
 136 #define MLD_MTRACE_RESP                 200     /* mtrace resp (to sender) */
 137 #define MLD_MTRACE                      201     /* mtrace messages */
 138
 139 #define ICMP6_HADISCOV_REQUEST          202     /* XXX To be defined */
 140 #define ICMP6_HADISCOV_REPLY            203     /* XXX To be defined */
 141
 142 #ifndef _KERNEL
 143 #define MLD6_MTRACE_RESP        MLD_MTRACE_RESP
 144 #define MLD6_MTRACE             MLD_MTRACE
 145 #endif
 146
 147 #define ICMP6_MAXTYPE                   203
 148
 149 #define ICMP6_DST_UNREACH_NOROUTE       0       /* no route to destination */
 150 #define ICMP6_DST_UNREACH_ADMIN         1       /* administratively prohibited */
 151 #define ICMP6_DST_UNREACH_NOTNEIGHBOR   2       /* not a neighbor(obsolete) */
 152 #define ICMP6_DST_UNREACH_BEYONDSCOPE   2       /* beyond scope of source address */
 153 #define ICMP6_DST_UNREACH_ADDR          3       /* address unreachable */
 154 #define ICMP6_DST_UNREACH_NOPORT        4       /* port unreachable */
 155
 156 #define ICMP6_TIME_EXCEED_TRANSIT       0       /* ttl==0 in transit */
 157 #define ICMP6_TIME_EXCEED_REASSEMBLY    1       /* ttl==0 in reass */
 158
 159 #define ICMP6_PARAMPROB_HEADER          0       /* erroneous header field */
 160 #define ICMP6_PARAMPROB_NEXTHEADER      1       /* unrecognized next header */
 161 #define ICMP6_PARAMPROB_OPTION          2       /* unrecognized option */
 162
 163 #define ICMP6_INFOMSG_MASK              0x80    /* all informational messages */
 164
 165 #define ICMP6_NI_SUBJ_IPV6      0       /* Query Subject is an IPv6 address */
 166 #define ICMP6_NI_SUBJ_FQDN      1       /* Query Subject is a Domain name */
 167 #define ICMP6_NI_SUBJ_IPV4      2       /* Query Subject is an IPv4 address */
 168
 169 #define ICMP6_NI_SUCCESS        0       /* node information successful reply */
 170 #define ICMP6_NI_REFUSED        1       /* node information request is refused */
 171 #define ICMP6_NI_UNKNOWN        2       /* unknown Qtype */
 172
 173 #define ICMP6_ROUTER_RENUMBERING_COMMAND  0     /* rr command */
 174 #define ICMP6_ROUTER_RENUMBERING_RESULT   1     /* rr result */
 175 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255     /* rr seq num reset */
 176
 177 /* Used in kernel only */
 178 #define ND_REDIRECT_ONLINK      0       /* redirect to an on-link node */
 179 #define ND_REDIRECT_ROUTER      1       /* redirect to a better router */
 180
 181 /*
 182  * Multicast Listener Discovery
 183  */
 184 struct mld_hdr {
 185         struct icmp6_hdr        mld_icmp6_hdr;
 186         struct in6_addr         mld_addr; /* multicast address */
 187 } __attribute__((__packed__));
 188
 189 /* definitions to provide backward compatibility to old KAME applications */
 190 #ifndef _KERNEL
 191 #define mld6_hdr        mld_hdr
 192 #define mld6_type       mld_type
 193 #define mld6_code       mld_code
 194 #define mld6_cksum      mld_cksum
 195 #define mld6_maxdelay   mld_maxdelay
 196 #define mld6_reserved   mld_reserved
 197 #define mld6_addr       mld_addr
 198 #endif
 199
 200 /* shortcut macro definitions */
 201 #define mld_type        mld_icmp6_hdr.icmp6_type
 202 #define mld_code        mld_icmp6_hdr.icmp6_code
 203 #define mld_cksum       mld_icmp6_hdr.icmp6_cksum
 204 #define mld_maxdelay    mld_icmp6_hdr.icmp6_data16[0]
 205 #define mld_reserved    mld_icmp6_hdr.icmp6_data16[1]
 206
 207 /*
 208  * Neighbor Discovery
 209  */
 210
 211 struct nd_router_solicit {      /* router solicitation */
 212         struct icmp6_hdr        nd_rs_hdr;
 213         /* could be followed by options */
 214 } __attribute__((__packed__));
 215
 216 #define nd_rs_type      nd_rs_hdr.icmp6_type
 217 #define nd_rs_code      nd_rs_hdr.icmp6_code
 218 #define nd_rs_cksum     nd_rs_hdr.icmp6_cksum
 219 #define nd_rs_reserved  nd_rs_hdr.icmp6_data32[0]
 220
 221 struct nd_router_advert {       /* router advertisement */
 222         struct icmp6_hdr        nd_ra_hdr;
 223         u_int32_t               nd_ra_reachable;        /* reachable time */
 224         u_int32_t               nd_ra_retransmit;       /* retransmit timer */
 225         /* could be followed by options */
 226 } __attribute__((__packed__));
 227
 228 #define nd_ra_type              nd_ra_hdr.icmp6_type
 229 #define nd_ra_code              nd_ra_hdr.icmp6_code
 230 #define nd_ra_cksum             nd_ra_hdr.icmp6_cksum
 231 #define nd_ra_curhoplimit       nd_ra_hdr.icmp6_data8[0]
 232 #define nd_ra_flags_reserved    nd_ra_hdr.icmp6_data8[1]
 233 #define ND_RA_FLAG_MANAGED      0x80
 234 #define ND_RA_FLAG_OTHER        0x40
 235 #define ND_RA_FLAG_HA           0x20
 236
 237 /*
 238  * Router preference values based on draft-draves-ipngwg-router-selection-01.
 239  * These are non-standard definitions.
 240  */
 241 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
 242
 243 #define ND_RA_FLAG_RTPREF_HIGH  0x08 /* 00001000 */
 244 #define ND_RA_FLAG_RTPREF_MEDIUM        0x00 /* 00000000 */
 245 #define ND_RA_FLAG_RTPREF_LOW   0x18 /* 00011000 */
 246 #define ND_RA_FLAG_RTPREF_RSV   0x10 /* 00010000 */
 247
 248 #define nd_ra_router_lifetime   nd_ra_hdr.icmp6_data16[1]
 249
 250 struct nd_neighbor_solicit {    /* neighbor solicitation */
 251         struct icmp6_hdr        nd_ns_hdr;
 252         struct in6_addr         nd_ns_target;   /*target address */
 253         /* could be followed by options */
 254 } __attribute__((__packed__));
 255
 256 #define nd_ns_type              nd_ns_hdr.icmp6_type
 257 #define nd_ns_code              nd_ns_hdr.icmp6_code
 258 #define nd_ns_cksum             nd_ns_hdr.icmp6_cksum
 259 #define nd_ns_reserved          nd_ns_hdr.icmp6_data32[0]
 260
 261 struct nd_neighbor_advert {     /* neighbor advertisement */
 262         struct icmp6_hdr        nd_na_hdr;
 263         struct in6_addr         nd_na_target;   /* target address */
 264         /* could be followed by options */
 265 } __attribute__((__packed__));
 266
 267 #define nd_na_type              nd_na_hdr.icmp6_type
 268 #define nd_na_code              nd_na_hdr.icmp6_code
 269 #define nd_na_cksum             nd_na_hdr.icmp6_cksum
 270 #define nd_na_flags_reserved    nd_na_hdr.icmp6_data32[0]
 271 #if _BYTE_ORDER == _BIG_ENDIAN
 272 #define ND_NA_FLAG_ROUTER               0x80000000
 273 #define ND_NA_FLAG_SOLICITED            0x40000000
 274 #define ND_NA_FLAG_OVERRIDE             0x20000000
 275 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 276 #define ND_NA_FLAG_ROUTER               0x80
 277 #define ND_NA_FLAG_SOLICITED            0x40
 278 #define ND_NA_FLAG_OVERRIDE             0x20
 279 #else
 280 #error "Byte order not implemented"
 281 #endif
 282
 283 struct nd_redirect {            /* redirect */
 284         struct icmp6_hdr        nd_rd_hdr;
 285         struct in6_addr         nd_rd_target;   /* target address */
 286         struct in6_addr         nd_rd_dst;      /* destination address */
 287         /* could be followed by options */
 288 } __attribute__((__packed__));
 289
 290 #define nd_rd_type              nd_rd_hdr.icmp6_type
 291 #define nd_rd_code              nd_rd_hdr.icmp6_code
 292 #define nd_rd_cksum             nd_rd_hdr.icmp6_cksum
 293 #define nd_rd_reserved          nd_rd_hdr.icmp6_data32[0]
 294
 295 struct nd_opt_hdr {             /* Neighbor discovery option header */
 296         u_int8_t        nd_opt_type;
 297         u_int8_t        nd_opt_len;
 298         /* followed by option specific data*/
 299 } __attribute__((__packed__));
 300
 301 #define ND_OPT_SOURCE_LINKADDR          1
 302 #define ND_OPT_TARGET_LINKADDR          2
 303 #define ND_OPT_PREFIX_INFORMATION       3
 304 #define ND_OPT_REDIRECTED_HEADER        4
 305 #define ND_OPT_MTU                      5
 306
 307 #define ND_OPT_ROUTE_INFO               200     /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
 308 #define ND_OPT_RDNSS                    25      /* RFC 6106 */
 309 #define ND_OPT_DNSSL                    31      /* RFC 6106 */
 310 #define ND_OPT_MAX                      31
 311
 312
 313 struct nd_opt_prefix_info {     /* prefix information */
 314         u_int8_t        nd_opt_pi_type;
 315         u_int8_t        nd_opt_pi_len;
 316         u_int8_t        nd_opt_pi_prefix_len;
 317         u_int8_t        nd_opt_pi_flags_reserved;
 318         u_int32_t       nd_opt_pi_valid_time;
 319         u_int32_t       nd_opt_pi_preferred_time;
 320         u_int32_t       nd_opt_pi_reserved2;
 321         struct in6_addr nd_opt_pi_prefix;
 322 } __attribute__((__packed__));
 323
 324 #define ND_OPT_PI_FLAG_ONLINK           0x80
 325 #define ND_OPT_PI_FLAG_AUTO             0x40
 326
 327 struct nd_opt_rd_hdr {          /* redirected header */
 328         u_int8_t        nd_opt_rh_type;
 329         u_int8_t        nd_opt_rh_len;
 330         u_int16_t       nd_opt_rh_reserved1;
 331         u_int32_t       nd_opt_rh_reserved2;
 332         /* followed by IP header and data */
 333 } __attribute__((__packed__));
 334
 335 struct nd_opt_mtu {             /* MTU option */
 336         u_int8_t        nd_opt_mtu_type;
 337         u_int8_t        nd_opt_mtu_len;
 338         u_int16_t       nd_opt_mtu_reserved;
 339         u_int32_t       nd_opt_mtu_mtu;
 340 } __attribute__((__packed__));
 341
 342 struct nd_opt_route_info {      /* route info */
 343         u_int8_t        nd_opt_rti_type;
 344         u_int8_t        nd_opt_rti_len;
 345         u_int8_t        nd_opt_rti_prefixlen;
 346         u_int8_t        nd_opt_rti_flags;
 347         u_int32_t       nd_opt_rti_lifetime;
 348         /* prefix follows */
 349 } __attribute__((__packed__));
 350
 351 struct nd_opt_rdnss {           /* RDNSS option (RFC 6106) */
 352         u_int8_t        nd_opt_rdnss_type;
 353         u_int8_t        nd_opt_rdnss_len;
 354         u_int16_t       nd_opt_rdnss_reserved;
 355         u_int32_t       nd_opt_rdnss_lifetime;
 356         /* followed by list of recursive DNS servers */
 357 } __attribute__((__packed__));
 358
 359 struct nd_opt_dnssl {           /* DNSSL option (RFC 6106) */
 360         u_int8_t        nd_opt_dnssl_type;
 361         u_int8_t        nd_opt_dnssl_len;
 362         u_int16_t       nd_opt_dnssl_reserved;
 363         u_int32_t       nd_opt_dnssl_lifetime;
 364         /* followed by list of DNS search domains */
 365 } __attribute__((__packed__));
 366
 367 /*
 368  * icmp6 namelookup
 369  */
 370
 371 struct icmp6_namelookup {
 372         struct icmp6_hdr        icmp6_nl_hdr;
 373         u_int8_t        icmp6_nl_nonce[8];
 374         int32_t         icmp6_nl_ttl;
 375 #if 0
 376         u_int8_t        icmp6_nl_len;
 377         u_int8_t        icmp6_nl_name[3];
 378 #endif
 379         /* could be followed by options */
 380 } __attribute__((__packed__));
 381
 382 /*
 383  * icmp6 node information
 384  */
 385 struct icmp6_nodeinfo {
 386         struct icmp6_hdr icmp6_ni_hdr;
 387         u_int8_t icmp6_ni_nonce[8];
 388         /* could be followed by reply data */
 389 } __attribute__((__packed__));
 390
 391 #define ni_type         icmp6_ni_hdr.icmp6_type
 392 #define ni_code         icmp6_ni_hdr.icmp6_code
 393 #define ni_cksum        icmp6_ni_hdr.icmp6_cksum
 394 #define ni_qtype        icmp6_ni_hdr.icmp6_data16[0]
 395 #define ni_flags        icmp6_ni_hdr.icmp6_data16[1]
 396
 397 #define NI_QTYPE_NOOP           0 /* NOOP  */
 398 #define NI_QTYPE_SUPTYPES       1 /* Supported Qtypes */
 399 #define NI_QTYPE_FQDN           2 /* FQDN (draft 04) */
 400 #define NI_QTYPE_DNSNAME        2 /* DNS Name */
 401 #define NI_QTYPE_NODEADDR       3 /* Node Addresses */
 402 #define NI_QTYPE_IPV4ADDR       4 /* IPv4 Addresses */
 403
 404 #if _BYTE_ORDER == _BIG_ENDIAN
 405 #define NI_SUPTYPE_FLAG_COMPRESS        0x1
 406 #define NI_FQDN_FLAG_VALIDTTL           0x1
 407 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 408 #define NI_SUPTYPE_FLAG_COMPRESS        0x0100
 409 #define NI_FQDN_FLAG_VALIDTTL           0x0100
 410 #else
 411 #error "Byte order not implemented"
 412 #endif
 413
 414 #ifdef NAME_LOOKUPS_04
 415 #if _BYTE_ORDER == _BIG_ENDIAN
 416 #define NI_NODEADDR_FLAG_LINKLOCAL      0x1
 417 #define NI_NODEADDR_FLAG_SITELOCAL      0x2
 418 #define NI_NODEADDR_FLAG_GLOBAL         0x4
 419 #define NI_NODEADDR_FLAG_ALL            0x8
 420 #define NI_NODEADDR_FLAG_TRUNCATE       0x10
 421 #define NI_NODEADDR_FLAG_ANYCAST        0x20 /* just experimental. not in spec */
 422 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 423 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0100
 424 #define NI_NODEADDR_FLAG_SITELOCAL      0x0200
 425 #define NI_NODEADDR_FLAG_GLOBAL         0x0400
 426 #define NI_NODEADDR_FLAG_ALL            0x0800
 427 #define NI_NODEADDR_FLAG_TRUNCATE       0x1000
 428 #define NI_NODEADDR_FLAG_ANYCAST        0x2000 /* just experimental. not in spec */
 429 #else
 430 #error "Byte order not implemented"
 431 #endif
 432 #else  /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
 433 #if _BYTE_ORDER == _BIG_ENDIAN
 434 #define NI_NODEADDR_FLAG_TRUNCATE       0x1
 435 #define NI_NODEADDR_FLAG_ALL            0x2
 436 #define NI_NODEADDR_FLAG_COMPAT         0x4
 437 #define NI_NODEADDR_FLAG_LINKLOCAL      0x8
 438 #define NI_NODEADDR_FLAG_SITELOCAL      0x10
 439 #define NI_NODEADDR_FLAG_GLOBAL         0x20
 440 #define NI_NODEADDR_FLAG_ANYCAST        0x40 /* just experimental. not in spec */
 441 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 442 #define NI_NODEADDR_FLAG_TRUNCATE       0x0100
 443 #define NI_NODEADDR_FLAG_ALL            0x0200
 444 #define NI_NODEADDR_FLAG_COMPAT         0x0400
 445 #define NI_NODEADDR_FLAG_LINKLOCAL      0x0800
 446 #define NI_NODEADDR_FLAG_SITELOCAL      0x1000
 447 #define NI_NODEADDR_FLAG_GLOBAL         0x2000
 448 #define NI_NODEADDR_FLAG_ANYCAST        0x4000 /* just experimental. not in spec */
 449 #else
 450 #error "Byte order not implemented"
 451 #endif
 452 #endif
 453
 454 struct ni_reply_fqdn {
 455         u_int32_t ni_fqdn_ttl;  /* TTL */
 456         u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
 457         u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
 458 } __attribute__((__packed__));
 459
 460 /*
 461  * Router Renumbering. as router-renum-08.txt
 462  */
 463 struct icmp6_router_renum {     /* router renumbering header */
 464         struct icmp6_hdr        rr_hdr;
 465         u_int8_t        rr_segnum;
 466         u_int8_t        rr_flags;
 467         u_int16_t       rr_maxdelay;
 468         u_int32_t       rr_reserved;
 469 } __attribute__((__packed__));
 470
 471 #define ICMP6_RR_FLAGS_TEST             0x80
 472 #define ICMP6_RR_FLAGS_REQRESULT        0x40
 473 #define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
 474 #define ICMP6_RR_FLAGS_SPECSITE         0x10
 475 #define ICMP6_RR_FLAGS_PREVDONE         0x08
 476
 477 #define rr_type         rr_hdr.icmp6_type
 478 #define rr_code         rr_hdr.icmp6_code
 479 #define rr_cksum        rr_hdr.icmp6_cksum
 480 #define rr_seqnum       rr_hdr.icmp6_data32[0]
 481
 482 struct rr_pco_match {           /* match prefix part */
 483         u_int8_t        rpm_code;
 484         u_int8_t        rpm_len;
 485         u_int8_t        rpm_ordinal;
 486         u_int8_t        rpm_matchlen;
 487         u_int8_t        rpm_minlen;
 488         u_int8_t        rpm_maxlen;
 489         u_int16_t       rpm_reserved;
 490         struct  in6_addr        rpm_prefix;
 491 } __attribute__((__packed__));
 492
 493 #define RPM_PCO_ADD             1
 494 #define RPM_PCO_CHANGE          2
 495 #define RPM_PCO_SETGLOBAL       3
 496 #define RPM_PCO_MAX             4
 497
 498 struct rr_pco_use {             /* use prefix part */
 499         u_int8_t        rpu_uselen;
 500         u_int8_t        rpu_keeplen;
 501         u_int8_t        rpu_ramask;
 502         u_int8_t        rpu_raflags;
 503         u_int32_t       rpu_vltime;
 504         u_int32_t       rpu_pltime;
 505         u_int32_t       rpu_flags;
 506         struct  in6_addr rpu_prefix;
 507 } __attribute__((__packed__));
 508 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x80
 509 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x40
 510
 511 #if _BYTE_ORDER == _BIG_ENDIAN
 512 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80000000
 513 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40000000
 514 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 515 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     0x80
 516 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     0x40
 517 #else
 518 #error "Byte order not implemented"
 519 #endif
 520
 521 struct rr_result {              /* router renumbering result message */
 522         u_int16_t       rrr_flags;
 523         u_int8_t        rrr_ordinal;
 524         u_int8_t        rrr_matchedlen;
 525         u_int32_t       rrr_ifid;
 526         struct  in6_addr rrr_prefix;
 527 } __attribute__((__packed__));
 528 #if _BYTE_ORDER == _BIG_ENDIAN
 529 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0002
 530 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0001
 531 #elif _BYTE_ORDER == _LITTLE_ENDIAN
 532 #define ICMP6_RR_RESULT_FLAGS_OOB               0x0200
 533 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         0x0100
 534 #else
 535 #error "Byte order not implemented"
 536 #endif
 537
 538 /*
 539  * icmp6 filter structures.
 540  */
 541
 542 struct icmp6_filter {
 543         u_int32_t icmp6_filt[8];
 544 };
 545
 546 #ifdef _KERNEL
 547 #define ICMP6_FILTER_SETPASSALL(filterp) \
 548 do {                                                            \
 549         int i; u_char *p;                                       \
 550         p = (u_char *)filterp;                                  \
 551         for (i = 0; i < sizeof(struct icmp6_filter); i++)       \
 552                 p[i] = 0xff;                                    \
 553 } while (0)
 554 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 555         bzero(filterp, sizeof(struct icmp6_filter))
 556 #else /* _KERNEL */
 557 #define ICMP6_FILTER_SETPASSALL(filterp) \
 558         memset(filterp, 0xff, sizeof(struct icmp6_filter))
 559 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
 560         memset(filterp, 0x00, sizeof(struct icmp6_filter))
 561 #endif /* _KERNEL */
 562
 563 #define ICMP6_FILTER_SETPASS(type, filterp) \
 564         (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
 565 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
 566         (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
 567 #define ICMP6_FILTER_WILLPASS(type, filterp) \
 568         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
 569 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
 570         ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
 571
 572 /*
 573  * Variables related to this implementation
 574  * of the internet control message protocol version 6.
 575  */
 576 struct icmp6errstat {
 577         u_quad_t icp6errs_dst_unreach_noroute;
 578         u_quad_t icp6errs_dst_unreach_admin;
 579         u_quad_t icp6errs_dst_unreach_beyondscope;
 580         u_quad_t icp6errs_dst_unreach_addr;
 581         u_quad_t icp6errs_dst_unreach_noport;
 582         u_quad_t icp6errs_packet_too_big;
 583         u_quad_t icp6errs_time_exceed_transit;
 584         u_quad_t icp6errs_time_exceed_reassembly;
 585         u_quad_t icp6errs_paramprob_header;
 586         u_quad_t icp6errs_paramprob_nextheader;
 587         u_quad_t icp6errs_paramprob_option;
 588         u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
 589         u_quad_t icp6errs_unknown;
 590 };
 591
 592 struct icmp6stat {
 593 /* statistics related to icmp6 packets generated */
 594         u_quad_t icp6s_error;           /* # of calls to icmp6_error */
 595         u_quad_t icp6s_canterror;       /* no error 'cuz old was icmp */
 596         u_quad_t icp6s_toofreq;         /* no error 'cuz rate limitation */
 597         u_quad_t icp6s_outhist[256];
 598 /* statistics related to input message processed */
 599         u_quad_t icp6s_badcode;         /* icmp6_code out of range */
 600         u_quad_t icp6s_tooshort;        /* packet < sizeof(struct icmp6_hdr) */
 601         u_quad_t icp6s_checksum;        /* bad checksum */
 602         u_quad_t icp6s_badlen;          /* calculated bound mismatch */
 603         /*
 604          * number of responses: this member is inherited from netinet code, but
 605          * for netinet6 code, it is already available in icp6s_outhist[].
 606          */
 607         u_quad_t icp6s_reflect;
 608         u_quad_t icp6s_inhist[256];
 609         u_quad_t icp6s_nd_toomanyopt;   /* too many ND options */
 610         struct icmp6errstat icp6s_outerrhist;
 611 #define icp6s_odst_unreach_noroute \
 612         icp6s_outerrhist.icp6errs_dst_unreach_noroute
 613 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
 614 #define icp6s_odst_unreach_beyondscope \
 615         icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
 616 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
 617 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
 618 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
 619 #define icp6s_otime_exceed_transit \
 620         icp6s_outerrhist.icp6errs_time_exceed_transit
 621 #define icp6s_otime_exceed_reassembly \
 622         icp6s_outerrhist.icp6errs_time_exceed_reassembly
 623 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
 624 #define icp6s_oparamprob_nextheader \
 625         icp6s_outerrhist.icp6errs_paramprob_nextheader
 626 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
 627 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
 628 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
 629         u_quad_t icp6s_pmtuchg;         /* path MTU changes */
 630         u_quad_t icp6s_nd_badopt;       /* bad ND options */
 631         u_quad_t icp6s_badns;           /* bad neighbor solicitation */
 632         u_quad_t icp6s_badna;           /* bad neighbor advertisement */
 633         u_quad_t icp6s_badrs;           /* bad router advertisement */
 634         u_quad_t icp6s_badra;           /* bad router advertisement */
 635         u_quad_t icp6s_badredirect;     /* bad redirect message */
 636 };
 637
 638 /*
 639  * Names for ICMP sysctl objects
 640  */
 641 #define ICMPV6CTL_STATS         1
 642 #define ICMPV6CTL_REDIRACCEPT   2       /* accept/process redirects */
 643 #define ICMPV6CTL_REDIRTIMEOUT  3       /* redirect cache time */
 644 #if 0   /*obsoleted*/
 645 #define ICMPV6CTL_ERRRATELIMIT  5       /* ICMPv6 error rate limitation */
 646 #endif
 647 #define ICMPV6CTL_ND6_PRUNE     6
 648 #define ICMPV6CTL_ND6_DELAY     8
 649 #define ICMPV6CTL_ND6_UMAXTRIES 9
 650 #define ICMPV6CTL_ND6_MMAXTRIES         10
 651 #define ICMPV6CTL_ND6_USELOOPBACK       11
 652 /*#define ICMPV6CTL_ND6_PROXYALL        12      obsoleted, do not reuse here */
 653 #define ICMPV6CTL_NODEINFO      13
 654 #define ICMPV6CTL_ERRPPSLIMIT   14      /* ICMPv6 error pps limitation */
 655 #define ICMPV6CTL_ND6_MAXNUDHINT        15
 656 #define ICMPV6CTL_MTUDISC_HIWAT 16
 657 #define ICMPV6CTL_MTUDISC_LOWAT 17
 658 #define ICMPV6CTL_ND6_DEBUG     18
 659 #define ICMPV6CTL_ND6_DRLIST    19
 660 #define ICMPV6CTL_ND6_PRLIST    20
 661 #define ICMPV6CTL_MAXID         21
 662
 663 #define ICMPV6CTL_NAMES { \
 664         { 0, 0 }, \
 665         { 0, 0 }, \
 666         { "rediraccept", CTLTYPE_INT }, \
 667         { "redirtimeout", CTLTYPE_INT }, \
 668         { 0, 0 }, \
 669         { 0, 0 }, \
 670         { "nd6_prune", CTLTYPE_INT }, \
 671         { 0, 0 }, \
 672         { "nd6_delay", CTLTYPE_INT }, \
 673         { "nd6_umaxtries", CTLTYPE_INT }, \
 674         { "nd6_mmaxtries", CTLTYPE_INT }, \
 675         { "nd6_useloopback", CTLTYPE_INT }, \
 676         { 0, 0 }, \
 677         { "nodeinfo", CTLTYPE_INT }, \
 678         { "errppslimit", CTLTYPE_INT }, \
 679         { "nd6_maxnudhint", CTLTYPE_INT }, \
 680         { "mtudisc_hiwat", CTLTYPE_INT }, \
 681         { "mtudisc_lowat", CTLTYPE_INT }, \
 682         { "nd6_debug", CTLTYPE_INT }, \
 683         { 0, 0 }, \
 684         { 0, 0 }, \
 685 }
 686
 687 #define RTF_PROBEMTU    RTF_PROTO1
 688
 689 #ifdef _KERNEL
 690 struct  rtentry;
 691 struct  rttimer;
 692 struct  in6_multi;
 693
 694 void    icmp6_init (void);
 695 void    icmp6_paramerror (struct mbuf *, int);
 696 void    icmp6_error (struct mbuf *, int, int, int);
 697 int     icmp6_input (struct mbuf **, int *, int);
 698 void    icmp6_fasttimo (void);
 699 void    icmp6_reflect (struct mbuf *, size_t);
 700 void    icmp6_prepare (struct mbuf *);
 701 void    icmp6_redirect_input (struct mbuf *, int);
 702 void    icmp6_redirect_output (struct mbuf *, struct rtentry *);
 703
 704 struct  ip6ctlparam;
 705 void    icmp6_mtudisc_update (struct ip6ctlparam *, int);
 706
 707 /* XXX: is this the right place for these macros? */
 708 #define icmp6_ifstat_inc(ifp, tag) \
 709 do {                                                            \
 710         if (ifp)                                                \
 711                 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
 712 } while (0)
 713
 714 #define icmp6_ifoutstat_inc(ifp, type, code) \
 715 do { \
 716                 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
 717                 if (type < ICMP6_INFOMSG_MASK) \
 718                         icmp6_ifstat_inc(ifp, ifs6_out_error); \
 719                 switch (type) { \
 720                  case ICMP6_DST_UNREACH: \
 721                          icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
 722                          if (code == ICMP6_DST_UNREACH_ADMIN) \
 723                                  icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
 724                          break; \
 725                  case ICMP6_PACKET_TOO_BIG: \
 726                          icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
 727                          break; \
 728                  case ICMP6_TIME_EXCEEDED: \
 729                          icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
 730                          break; \
 731                  case ICMP6_PARAM_PROB: \
 732                          icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
 733                          break; \
 734                  case ICMP6_ECHO_REQUEST: \
 735                          icmp6_ifstat_inc(ifp, ifs6_out_echo); \
 736                          break; \
 737                  case ICMP6_ECHO_REPLY: \
 738                          icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
 739                          break; \
 740                  case MLD_LISTENER_QUERY: \
 741                          icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
 742                          break; \
 743                  case MLD_LISTENER_REPORT: \
 744                          icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
 745                          break; \
 746                  case MLD_LISTENER_DONE: \
 747                          icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
 748                          break; \
 749                  case ND_ROUTER_SOLICIT: \
 750                          icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
 751                          break; \
 752                  case ND_ROUTER_ADVERT: \
 753                          icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
 754                          break; \
 755                  case ND_NEIGHBOR_SOLICIT: \
 756                          icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
 757                          break; \
 758                  case ND_NEIGHBOR_ADVERT: \
 759                          icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
 760                          break; \
 761                  case ND_REDIRECT: \
 762                          icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
 763                          break; \
 764                 } \
 765 } while (0)
 766
 767 extern int      icmp6_rediraccept;      /* accept/process redirects */
 768 extern int      icmp6_redirtimeout;     /* cache time for redirect routes */
 769 #endif /* _KERNEL */
 770
 771 #endif /* not _NETINET_ICMP6_H_ */