sys/netinet/in.h

   1 /*
   2  * Copyright (c) 1982, 1986, 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  30  * $FreeBSD: src/sys/netinet/in.h,v 1.48.2.10 2003/08/24 08:24:38 hsu Exp $
  31  */
  32
  33 #ifndef _NETINET_IN_H_
  34 #define _NETINET_IN_H_
  35
  36 #include <machine/stdint.h>
  37
  38 #ifndef _KERNEL
  39 #include <machine/endian.h>
  40 #ifndef _BYTEORDER_FUNC_DEFINED
  41 #define _BYTEORDER_FUNC_DEFINED
  42 #define htonl(x)        __htonl(x)
  43 #define htons(x)        __htons(x)
  44 #define ntohl(x)        __ntohl(x)
  45 #define ntohs(x)        __ntohs(x)
  46 #endif
  47 #endif
  48
  49 #ifndef _IN_ADDR_T_DECLARED
  50 typedef __uint32_t      in_addr_t;      /* base type for internet address */
  51 #define _IN_ADDR_T_DECLARED
  52 #endif
  53
  54 #ifndef _IN_PORT_T_DECLARED
  55 typedef __uint16_t      in_port_t;
  56 #define _IN_PORT_T_DECLARED
  57 #endif
  58
  59 #ifndef _SA_FAMILY_T_DECLARED
  60 typedef __uint8_t       sa_family_t;
  61 #define _SA_FAMILY_T_DECLARED
  62 #endif
  63
  64 #ifndef _UINT8_T_DECLARED
  65 typedef __uint8_t       uint8_t;
  66 #define _UINT8_T_DECLARED
  67 #endif
  68 #ifndef _UINT32_T_DECLARED
  69 typedef __uint32_t      uint32_t;
  70 #define _UINT32_T_DECLARED
  71 #endif
  72
  73 #ifndef _STRUCT_IN_ADDR_DECLARED
  74 #define _STRUCT_IN_ADDR_DECLARED
  75 /*
  76  * Internet address (a structure for historical reasons)
  77  */
  78 struct in_addr {
  79         in_addr_t s_addr;
  80 };
  81 #endif
  82
  83 /*
  84  * Constants and structures defined by the internet system,
  85  * Per RFC 790, September 1981, and numerous additions.
  86  */
  87
  88 /*
  89  * Protocols (RFC 1700) that are part of standards
  90  */
  91 #define IPPROTO_IP              0               /* dummy for IP */
  92 #define IPPROTO_ICMP            1               /* control message protocol */
  93 #define IPPROTO_TCP             6               /* tcp */
  94 #define IPPROTO_UDP             17              /* user datagram protocol */
  95 #define IPPROTO_IPV6            41              /* IP6 header */
  96 #if __POSIX_VISIBLE >= 200112
  97 #define IPPROTO_RAW             255             /* raw IP packet */
  98 #endif
  99
 100 #if __BSD_VISIBLE
 101 /*
 102  * Protocols (RFC 1700)
 103  */
 104 #define IPPROTO_HOPOPTS         0               /* IP6 hop-by-hop options */
 105 #define IPPROTO_IGMP            2               /* group mgmt protocol */
 106 #define IPPROTO_GGP             3               /* gateway^2 (deprecated) */
 107 #define IPPROTO_IPV4            4               /* IPv4 encapsulation */
 108 #define IPPROTO_IPIP            IPPROTO_IPV4    /* for compatibility */
 109 #define IPPROTO_ST              7               /* Stream protocol II */
 110 #define IPPROTO_EGP             8               /* exterior gateway protocol */
 111 #define IPPROTO_PIGP            9               /* private interior gateway */
 112 #define IPPROTO_RCCMON          10              /* BBN RCC Monitoring */
 113 #define IPPROTO_NVPII           11              /* network voice protocol*/
 114 #define IPPROTO_PUP             12              /* pup */
 115 #define IPPROTO_ARGUS           13              /* Argus */
 116 #define IPPROTO_EMCON           14              /* EMCON */
 117 #define IPPROTO_XNET            15              /* Cross Net Debugger */
 118 #define IPPROTO_CHAOS           16              /* Chaos*/
 119 #define IPPROTO_MUX             18              /* Multiplexing */
 120 #define IPPROTO_MEAS            19              /* DCN Measurement Subsystems */
 121 #define IPPROTO_HMP             20              /* Host Monitoring */
 122 #define IPPROTO_PRM             21              /* Packet Radio Measurement */
 123 #define IPPROTO_IDP             22              /* xns idp */
 124 #define IPPROTO_TRUNK1          23              /* Trunk-1 */
 125 #define IPPROTO_TRUNK2          24              /* Trunk-2 */
 126 #define IPPROTO_LEAF1           25              /* Leaf-1 */
 127 #define IPPROTO_LEAF2           26              /* Leaf-2 */
 128 #define IPPROTO_RDP             27              /* Reliable Data */
 129 #define IPPROTO_IRTP            28              /* Reliable Transaction */
 130 #define IPPROTO_TP              29              /* tp-4 w/ class negotiation */
 131 #define IPPROTO_BLT             30              /* Bulk Data Transfer */
 132 #define IPPROTO_NSP             31              /* Network Services */
 133 #define IPPROTO_INP             32              /* Merit Internodal */
 134 #define IPPROTO_SEP             33              /* Sequential Exchange */
 135 #define IPPROTO_3PC             34              /* Third Party Connect */
 136 #define IPPROTO_IDPR            35              /* InterDomain Policy Routing */
 137 #define IPPROTO_XTP             36              /* XTP */
 138 #define IPPROTO_DDP             37              /* Datagram Delivery */
 139 #define IPPROTO_CMTP            38              /* Control Message Transport */
 140 #define IPPROTO_TPXX            39              /* TP++ Transport */
 141 #define IPPROTO_IL              40              /* IL transport protocol */
 142 #define IPPROTO_SDRP            42              /* Source Demand Routing */
 143 #define IPPROTO_ROUTING         43              /* IP6 routing header */
 144 #define IPPROTO_FRAGMENT        44              /* IP6 fragmentation header */
 145 #define IPPROTO_IDRP            45              /* InterDomain Routing*/
 146 #define IPPROTO_RSVP            46              /* resource reservation */
 147 #define IPPROTO_GRE             47              /* General Routing Encap. */
 148 #define IPPROTO_MHRP            48              /* Mobile Host Routing */
 149 #define IPPROTO_BHA             49              /* BHA */
 150 #define IPPROTO_ESP             50              /* IP6 Encap Sec. Payload */
 151 #define IPPROTO_AH              51              /* IP6 Auth Header */
 152 #define IPPROTO_INLSP           52              /* Integ. Net Layer Security */
 153 #define IPPROTO_SWIPE           53              /* IP with encryption */
 154 #define IPPROTO_NHRP            54              /* Next Hop Resolution */
 155 #define IPPROTO_MOBILE          55              /* IP Mobility */
 156 #define IPPROTO_TLSP            56              /* Transport Layer Security */
 157 #define IPPROTO_SKIP            57              /* SKIP */
 158 #define IPPROTO_ICMPV6          58              /* ICMP6 */
 159 #define IPPROTO_NONE            59              /* IP6 no next header */
 160 #define IPPROTO_DSTOPTS         60              /* IP6 destination option */
 161 #define IPPROTO_AHIP            61              /* any host internal protocol */
 162 #define IPPROTO_CFTP            62              /* CFTP */
 163 #define IPPROTO_HELLO           63              /* "hello" routing protocol */
 164 #define IPPROTO_SATEXPAK        64              /* SATNET/Backroom EXPAK */
 165 #define IPPROTO_KRYPTOLAN       65              /* Kryptolan */
 166 #define IPPROTO_RVD             66              /* Remote Virtual Disk */
 167 #define IPPROTO_IPPC            67              /* Pluribus Packet Core */
 168 #define IPPROTO_ADFS            68              /* Any distributed FS */
 169 #define IPPROTO_SATMON          69              /* Satnet Monitoring */
 170 #define IPPROTO_VISA            70              /* VISA Protocol */
 171 #define IPPROTO_IPCV            71              /* Packet Core Utility */
 172 #define IPPROTO_CPNX            72              /* Comp. Prot. Net. Executive */
 173 #define IPPROTO_CPHB            73              /* Comp. Prot. HeartBeat */
 174 #define IPPROTO_WSN             74              /* Wang Span Network */
 175 #define IPPROTO_PVP             75              /* Packet Video Protocol */
 176 #define IPPROTO_BRSATMON        76              /* BackRoom SATNET Monitoring */
 177 #define IPPROTO_ND              77              /* Sun net disk proto (temp.) */
 178 #define IPPROTO_WBMON           78              /* WIDEBAND Monitoring */
 179 #define IPPROTO_WBEXPAK         79              /* WIDEBAND EXPAK */
 180 #define IPPROTO_EON             80              /* ISO cnlp */
 181 #define IPPROTO_VMTP            81              /* VMTP */
 182 #define IPPROTO_SVMTP           82              /* Secure VMTP */
 183 #define IPPROTO_VINES           83              /* Banyon VINES */
 184 #define IPPROTO_TTP             84              /* TTP */
 185 #define IPPROTO_IGP             85              /* NSFNET-IGP */
 186 #define IPPROTO_DGP             86              /* dissimilar gateway prot. */
 187 #define IPPROTO_TCF             87              /* TCF */
 188 #define IPPROTO_IGRP            88              /* Cisco/GXS IGRP */
 189 #define IPPROTO_OSPFIGP         89              /* OSPFIGP */
 190 #define IPPROTO_SRPC            90              /* Strite RPC protocol */
 191 #define IPPROTO_LARP            91              /* Locus Address Resoloution */
 192 #define IPPROTO_MTP             92              /* Multicast Transport */
 193 #define IPPROTO_AX25            93              /* AX.25 Frames */
 194 #define IPPROTO_IPEIP           94              /* IP encapsulated in IP */
 195 #define IPPROTO_MICP            95              /* Mobile Int.ing control */
 196 #define IPPROTO_SCCSP           96              /* Semaphore Comm. security */
 197 #define IPPROTO_ETHERIP         97              /* Ethernet IP encapsulation */
 198 #define IPPROTO_ENCAP           98              /* encapsulation header */
 199 #define IPPROTO_APES            99              /* any private encr. scheme */
 200 #define IPPROTO_GMTP            100             /* GMTP*/
 201 #define IPPROTO_IPCOMP          108             /* payload compression (IPComp) */
 202 /* 101-254: Partly Unassigned */
 203 #define IPPROTO_PIM             103             /* Protocol Independent Mcast */
 204 #define IPPROTO_CARP            112             /* CARP */
 205 #define IPPROTO_PGM             113             /* PGM */
 206 #define IPPROTO_PFSYNC          240             /* PFSYNC */
 207 /* 255: Reserved */
 208 /* BSD Private, local use, namespace incursion */
 209 #define IPPROTO_DIVERT          254             /* divert pseudo-protocol */
 210 #define IPPROTO_MAX             256
 211
 212 /* last return value of *_input(), meaning "all job for this pkt is done".  */
 213 #define IPPROTO_DONE            257
 214
 215 /* Used by RSS: the layer3 protocol is unknown */
 216 #define IPPROTO_UNKNOWN         258
 217
 218 /*
 219  * Local port number conventions:
 220  *
 221  * When a user does a bind(2) or connect(2) with a port number of zero,
 222  * a non-conflicting local port address is chosen.
 223  * The default range is IPPORT_RESERVED through
 224  * IPPORT_USERRESERVED, although that is settable by sysctl.
 225  *
 226  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 227  * default assignment range.
 228  *
 229  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 230  *
 231  * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
 232  * into the "high" range.  These are reserved for client outbound connections
 233  * which do not want to be filtered by any firewalls.
 234  *
 235  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 236  * that is (by convention) restricted to privileged processes.  This
 237  * convention is based on "vouchsafe" principles only.  It is only secure
 238  * if you trust the remote host to restrict these ports.
 239  *
 240  * The default range of ports and the high range can be changed by
 241  * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
 242  *
 243  * Changing those values has bad security implications if you are
 244  * using a a stateless firewall that is allowing packets outside of that
 245  * range in order to allow transparent outgoing connections.
 246  *
 247  * Such a firewall configuration will generally depend on the use of these
 248  * default values.  If you change them, you may find your Security
 249  * Administrator looking for you with a heavy object.
 250  *
 251  * For a slightly more orthodox text view on this:
 252  *   ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
 253  *
 254  *   port numbers are divided into three ranges:
 255  *              0 -  1023 Well Known Ports
 256  *           1024 - 49151 Registered Ports
 257  *          49152 - 65535 Dynamic and/or Private Ports
 258  */
 259
 260 /*
 261  * Ports < IPPORT_RESERVED are reserved for
 262  * privileged processes (e.g. root).  (IP_PORTRANGE_LOW)
 263  * Ports > IPPORT_USERRESERVED are reserved
 264  * for servers, not necessarily privileged.  (IP_PORTRANGE_DEFAULT)
 265  */
 266 #define IPPORT_RESERVED         1024
 267 #define IPPORT_USERRESERVED     5000
 268
 269 /*
 270  * Default local port range to use by setting IP_PORTRANGE_HIGH
 271  */
 272 #define IPPORT_HIFIRSTAUTO      49152
 273 #define IPPORT_HILASTAUTO       65535
 274
 275 /*
 276  * Scanning for a free reserved port return a value below IPPORT_RESERVED,
 277  * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
 278  * 512, but that conflicts with some well-known-services that firewalls may
 279  * have a fit if we use.
 280  */
 281 #define IPPORT_RESERVEDSTART    600
 282
 283 #define IPPORT_MAX              65535
 284
 285 /*
 286  * Definitions of bits in internet address integers.
 287  * On subnets, the decomposition of addresses to host and net parts
 288  * is done according to subnet mask, not the masks here.
 289  */
 290 #define IN_CLASSA(i)            (((uint32_t)(i) & 0x80000000) == 0)
 291 #define IN_CLASSA_NET           0xff000000
 292 #define IN_CLASSA_NSHIFT        24
 293 #define IN_CLASSA_HOST          0x00ffffff
 294 #define IN_CLASSA_MAX           128
 295
 296 #define IN_CLASSB(i)            (((uint32_t)(i) & 0xc0000000) == 0x80000000)
 297 #define IN_CLASSB_NET           0xffff0000
 298 #define IN_CLASSB_NSHIFT        16
 299 #define IN_CLASSB_HOST          0x0000ffff
 300 #define IN_CLASSB_MAX           65536
 301
 302 #define IN_CLASSC(i)            (((uint32_t)(i) & 0xe0000000) == 0xc0000000)
 303 #define IN_CLASSC_NET           0xffffff00
 304 #define IN_CLASSC_NSHIFT        8
 305 #define IN_CLASSC_HOST          0x000000ff
 306
 307 #define IN_CLASSD(i)            (((uint32_t)(i) & 0xf0000000) == 0xe0000000)
 308 #define IN_CLASSD_NET           0xf0000000      /* These ones aren't really */
 309 #define IN_CLASSD_NSHIFT        28              /* net and host fields, but */
 310 #define IN_CLASSD_HOST          0x0fffffff      /* routing needn't know.    */
 311 #define IN_MULTICAST(i)         IN_CLASSD(i)
 312
 313 #define IN_EXPERIMENTAL(i)      (((uint32_t)(i) & 0xf0000000) == 0xf0000000)
 314 #define IN_BADCLASS(i)          (((uint32_t)(i) & 0xf0000000) == 0xf0000000)
 315 #endif /* __BSD_VISIBLE */
 316
 317 #define INADDR_ANY              (uint32_t)0x00000000
 318 #if __BSD_VISIBLE
 319 #define INADDR_LOOPBACK         (uint32_t)0x7f000001
 320 #endif
 321 #define INADDR_BROADCAST        (uint32_t)0xffffffff    /* must be masked */
 322 #ifndef _KERNEL
 323 #define INADDR_NONE             0xffffffff              /* -1 return */
 324 #endif
 325
 326 #if __BSD_VISIBLE
 327 #define INADDR_UNSPEC_GROUP     (uint32_t)0xe0000000    /* 224.0.0.0 */
 328 #define INADDR_ALLHOSTS_GROUP   (uint32_t)0xe0000001    /* 224.0.0.1 */
 329 #define INADDR_ALLRTRS_GROUP    (uint32_t)0xe0000002    /* 224.0.0.2 */
 330 #define INADDR_CARP_GROUP       (uint32_t)0xe0000012    /* 224.0.0.18 */
 331 #define INADDR_PFSYNC_GROUP     (uint32_t)0xe00000f0    /* 224.0.0.240 */
 332 #define INADDR_ALLMDNS_GROUP    (uint32_t)0xe00000fb    /* 224.0.0.251 */
 333 #define INADDR_MAX_LOCAL_GROUP  (uint32_t)0xe00000ff    /* 224.0.0.255 */
 334
 335 #define IN_LOOPBACKNET          127                     /* official! */
 336
 337 #define IN_RFC3021_MASK         (uint32_t)0xfffffffe
 338 #endif
 339
 340 /*
 341  * Socket address, internet style.
 342  */
 343 struct sockaddr_in {
 344         uint8_t         sin_len;
 345         sa_family_t     sin_family;
 346         in_port_t       sin_port;
 347         struct in_addr  sin_addr;
 348         char            sin_zero[8];
 349 };
 350
 351 #define INET_ADDRSTRLEN         16
 352
 353 #if __BSD_VISIBLE
 354 /*
 355  * Options for use with [gs]etsockopt at the IP level.
 356  * First word of comment is data type; bool is stored in int.
 357  */
 358 #define IP_OPTIONS              1    /* buf/ip_opts; set/get IP options */
 359 #define IP_HDRINCL              2    /* int; header is included with data */
 360 #define IP_TOS                  3    /* int; IP type of service and preced. */
 361 #define IP_TTL                  4    /* int; IP time to live */
 362 #define IP_RECVOPTS             5    /* bool; receive all IP opts w/dgram */
 363 #define IP_RECVRETOPTS          6    /* bool; receive IP opts for response */
 364 #define IP_RECVDSTADDR          7    /* bool; receive IP dst addr w/dgram */
 365 #define IP_SENDSRCADDR          IP_RECVDSTADDR /* cmsg_type to set src addr */
 366 #define IP_RETOPTS              8    /* ip_opts; set/get IP options */
 367 #define IP_MULTICAST_IF         9    /* u_char; set/get IP multicast i/f  */
 368 #define IP_MULTICAST_TTL        10   /* u_char; set/get IP multicast ttl */
 369 #define IP_MULTICAST_LOOP       11   /* u_char; set/get IP multicast loopback */
 370 #define IP_ADD_MEMBERSHIP       12   /* ip_mreq; add an IP group membership */
 371 #define IP_DROP_MEMBERSHIP      13   /* ip_mreq; drop an IP group membership */
 372 #define IP_MULTICAST_VIF        14   /* set/get IP mcast virt. iface */
 373 #define IP_RSVP_ON              15   /* enable RSVP in kernel */
 374 #define IP_RSVP_OFF             16   /* disable RSVP in kernel */
 375 #define IP_RSVP_VIF_ON          17   /* set RSVP per-vif socket */
 376 #define IP_RSVP_VIF_OFF         18   /* unset RSVP per-vif socket */
 377 #define IP_PORTRANGE            19   /* int; range to choose for unspec port */
 378 #define IP_RECVIF               20   /* bool; receive reception if w/dgram */
 379
 380 #define IP_FW_TBL_CREATE        40   /* create ipfw table */
 381 #define IP_FW_TBL_DESTROY       41   /* destroy ipfw table */
 382 #define IP_FW_TBL_ADD           42   /* add network/host to ipfw table */
 383 #define IP_FW_TBL_DEL           43   /* delete network/host from ipfw table */
 384 #define IP_FW_TBL_FLUSH         44   /* flush ipfw table */
 385 #define IP_FW_TBL_GET           45   /* list/show ipfw table */
 386 #define IP_FW_TBL_ZERO          46   /* clear ipfw table counters */
 387 #define IP_FW_TBL_EXPIRE        47   /* expire addresses in ipfw table */
 388
 389 #define IP_FW_X                 49   /* ipfw3 firewall */
 390
 391 #define IP_FW_ADD               50   /* add a firewall rule to chain */
 392 #define IP_FW_DEL               51   /* delete a firewall rule from chain */
 393 #define IP_FW_FLUSH             52   /* flush firewall rule chain */
 394 #define IP_FW_ZERO              53   /* clear single/all firewall counter(s) */
 395 #define IP_FW_GET               54   /* get entire firewall rule chain */
 396 #define IP_FW_RESETLOG          55   /* reset logging counters */
 397
 398 #define IP_DUMMYNET_CONFIGURE   60   /* add/configure a dummynet pipe */
 399 #define IP_DUMMYNET_DEL         61   /* delete a dummynet pipe from chain */
 400 #define IP_DUMMYNET_FLUSH       62   /* flush dummynet */
 401 #define IP_DUMMYNET_GET         64   /* get entire dummynet pipes */
 402
 403 #define IP_RECVTTL              65   /* bool; receive IP TTL w/dgram */
 404 #define IP_MINTTL               66   /* minimum TTL for packet or drop */
 405 /* 67 IP_DONTFRAG */
 406 #define IP_RECVTOS              68   /* bool; receive IP TOS w/dgram */
 407
 408 /*
 409  * Defaults and limits for options
 410  */
 411 #define IP_DEFAULT_MULTICAST_TTL  1     /* normally limit m'casts to 1 hop  */
 412 #define IP_DEFAULT_MULTICAST_LOOP 1     /* normally hear sends if a member  */
 413 #define IP_MAX_MEMBERSHIPS      20      /* per socket */
 414
 415 /*
 416  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
 417  */
 418 struct ip_mreq {
 419         struct  in_addr imr_multiaddr;  /* IP multicast address of group */
 420         struct  in_addr imr_interface;  /* local IP address of interface */
 421 };
 422
 423 /*
 424  * Modified argument structure for IP_MULTICAST_IF and IP_ADD_MEMBERSHIP,
 425  * obtained from Linux.  This is used to specify an interface index for
 426  * multicast sends.
 427  */
 428 struct ip_mreqn {
 429         struct  in_addr imr_multiaddr;  /* IP multicast address of group */
 430         struct  in_addr imr_address;    /* local IP address of interface */
 431         int             imr_ifindex;    /* Interface index; cast to uint32_t */
 432 };
 433
 434 /*
 435  * Argument for IP_PORTRANGE:
 436  * - which range to search when port is unspecified at bind() or connect()
 437  */
 438 #define IP_PORTRANGE_DEFAULT    0       /* default range */
 439 #define IP_PORTRANGE_HIGH       1       /* "high" - request firewall bypass */
 440 #define IP_PORTRANGE_LOW        2       /* "low" - vouchsafe security */
 441
 442 /*
 443  * Definitions for inet sysctl operations.
 444  *
 445  * Third level is protocol number.
 446  * Fourth level is desired variable within that protocol.
 447  */
 448 #define IPPROTO_MAXID   (IPPROTO_AH + 1)        /* don't list to IPPROTO_MAX */
 449
 450 #define CTL_IPPROTO_NAMES { \
 451         { "ip", CTLTYPE_NODE }, \
 452         { "icmp", CTLTYPE_NODE }, \
 453         { "igmp", CTLTYPE_NODE }, \
 454         { "ggp", CTLTYPE_NODE }, \
 455         { 0, 0 }, \
 456         { 0, 0 }, \
 457         { "tcp", CTLTYPE_NODE }, \
 458         { 0, 0 }, \
 459         { "egp", CTLTYPE_NODE }, \
 460         { 0, 0 }, \
 461         { 0, 0 }, \
 462         { 0, 0 }, \
 463         { "pup", CTLTYPE_NODE }, \
 464         { 0, 0 }, \
 465         { 0, 0 }, \
 466         { 0, 0 }, \
 467         { 0, 0 }, \
 468         { "udp", CTLTYPE_NODE }, \
 469         { 0, 0 }, \
 470         { 0, 0 }, \
 471         { 0, 0 }, \
 472         { 0, 0 }, \
 473         { "idp", CTLTYPE_NODE }, \
 474         { 0, 0 }, \
 475         { 0, 0 }, \
 476         { 0, 0 }, \
 477         { 0, 0 }, \
 478         { 0, 0 }, \
 479         { 0, 0 }, \
 480         { 0, 0 }, \
 481         { 0, 0 }, \
 482         { 0, 0 }, \
 483         { 0, 0 }, \
 484         { 0, 0 }, \
 485         { 0, 0 }, \
 486         { 0, 0 }, \
 487         { 0, 0 }, \
 488         { 0, 0 }, \
 489         { 0, 0 }, \
 490         { 0, 0 }, \
 491         { 0, 0 }, \
 492         { 0, 0 }, \
 493         { 0, 0 }, \
 494         { 0, 0 }, \
 495         { 0, 0 }, \
 496         { 0, 0 }, \
 497         { 0, 0 }, \
 498         { 0, 0 }, \
 499         { 0, 0 }, \
 500         { 0, 0 }, \
 501         { 0, 0 }, \
 502         { 0, 0 }, \
 503         { 0, 0 }, \
 504         { 0, 0 }, \
 505         { 0, 0 }, \
 506         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 507         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 508         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 509         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 510         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 511         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 512         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 513         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 514         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 515         { 0, 0 }, \
 516         { 0, 0 }, \
 517         { 0, 0 }, \
 518         { "pim", CTLTYPE_NODE }, \
 519 }
 520
 521 /*
 522  * Names for IP sysctl objects
 523  */
 524 #define IPCTL_FORWARDING        1       /* act as router */
 525 #define IPCTL_SENDREDIRECTS     2       /* may send redirects when forwarding */
 526 #define IPCTL_DEFTTL            3       /* default TTL */
 527 #ifdef notyet
 528 #define IPCTL_DEFMTU            4       /* default MTU */
 529 #endif
 530 #define IPCTL_RTEXPIRE          5       /* cloned route expiration time */
 531 #define IPCTL_RTMINEXPIRE       6       /* min value for expiration time */
 532 #define IPCTL_RTMAXCACHE        7       /* trigger level for dynamic expire */
 533 #define IPCTL_SOURCEROUTE       8       /* may perform source routes */
 534 #define IPCTL_DIRECTEDBROADCAST 9       /* may re-broadcast received packets */
 535 #define IPCTL_INTRQMAXLEN       10      /* max length of netisr queue */
 536 #define IPCTL_INTRQDROPS        11      /* number of netisr q drops */
 537 #define IPCTL_STATS             12      /* ipstat structure */
 538 #define IPCTL_ACCEPTSOURCEROUTE 13      /* may accept source routed packets */
 539 #define IPCTL_FASTFORWARDING    14      /* use fast IP forwarding code */
 540 #define IPCTL_GIF_TTL           16      /* default TTL for gif encap packet */
 541 #define IPCTL_MAXID             17
 542
 543 #define IPCTL_NAMES { \
 544         { 0, 0 }, \
 545         { "forwarding", CTLTYPE_INT }, \
 546         { "redirect", CTLTYPE_INT }, \
 547         { "ttl", CTLTYPE_INT }, \
 548         { "mtu", CTLTYPE_INT }, \
 549         { "rtexpire", CTLTYPE_INT }, \
 550         { "rtminexpire", CTLTYPE_INT }, \
 551         { "rtmaxcache", CTLTYPE_INT }, \
 552         { "sourceroute", CTLTYPE_INT }, \
 553         { "directed-broadcast", CTLTYPE_INT }, \
 554         { "intr-queue-maxlen", CTLTYPE_INT }, \
 555         { "intr-queue-drops", CTLTYPE_INT }, \
 556         { "stats", CTLTYPE_STRUCT }, \
 557         { "accept_sourceroute", CTLTYPE_INT }, \
 558         { "fastforwarding", CTLTYPE_INT }, \
 559 }
 560 #endif /* __BSD_VISIBLE */
 561
 562 #ifdef _KERNEL
 563 struct ifnet; struct mbuf;      /* forward declarations for Standard C */
 564 #endif
 565
 566 /* INET6 stuff */
 567 #define __KAME_NETINET_IN_H_INCLUDED_
 568 #include <netinet6/in6.h>
 569 #undef __KAME_NETINET_IN_H_INCLUDED_
 570
 571 #ifdef _KERNEL
 572
 573 struct thread;
 574
 575 int      in_broadcast(struct in_addr, struct ifnet *);
 576 int      in_canforward(struct in_addr);
 577 int      in_localaddr(struct in_addr);
 578 char    *kinet_ntoa(struct in_addr, char *); /* in libkern */
 579 char    *inet_ntop(int, const void * __restrict, char * __restrict,
 580             socklen_t); /* in libkern */
 581
 582 #define in_hosteq(s, t) ((s).s_addr == (t).s_addr)
 583 #define in_nullhost(x)  ((x).s_addr == INADDR_ANY)
 584
 585 #define satosin(sa)     ((struct sockaddr_in *)(sa))
 586 #define sintosa(sin)    ((struct sockaddr *)(sin))
 587 #define ifatoia(ifa)    ((struct in_ifaddr *)(ifa))
 588
 589 #endif
 590
 591 #endif