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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  34  * $FreeBSD: src/sys/netinet/in.h,v 1.48.2.10 2003/08/24 08:24:38 hsu Exp $
  35  * $DragonFly: src/sys/netinet/in.h,v 1.16 2007/08/16 20:03:57 dillon Exp $
  36  */
  37
  38 #ifndef _NETINET_IN_H_
  39 #define _NETINET_IN_H_
  40
  41 #include <sys/types.h>
  42
  43 #ifndef _KERNEL
  44 #include <machine/endian.h>
  45 #ifndef htonl
  46 #define htonl(x)        __htonl(x)
  47 #endif
  48 #ifndef htons
  49 #define htons(x)        __htons(x)
  50 #endif
  51 #ifndef ntohl
  52 #define ntohl(x)        __ntohl(x)
  53 #endif
  54 #ifndef ntohs
  55 #define ntohs(x)        __ntohs(x)
  56 #endif
  57 #endif
  58
  59 /*
  60  * Constants and structures defined by the internet system,
  61  * Per RFC 790, September 1981, and numerous additions.
  62  */
  63
  64 /*
  65  * Protocols (RFC 1700)
  66  */
  67 #define IPPROTO_IP              0               /* dummy for IP */
  68 #define IPPROTO_HOPOPTS         0               /* IP6 hop-by-hop options */
  69 #define IPPROTO_ICMP            1               /* control message protocol */
  70 #define IPPROTO_IGMP            2               /* group mgmt protocol */
  71 #define IPPROTO_GGP             3               /* gateway^2 (deprecated) */
  72 #define IPPROTO_IPV4            4               /* IPv4 encapsulation */
  73 #define IPPROTO_IPIP            IPPROTO_IPV4    /* for compatibility */
  74 #define IPPROTO_TCP             6               /* tcp */
  75 #define IPPROTO_ST              7               /* Stream protocol II */
  76 #define IPPROTO_EGP             8               /* exterior gateway protocol */
  77 #define IPPROTO_PIGP            9               /* private interior gateway */
  78 #define IPPROTO_RCCMON          10              /* BBN RCC Monitoring */
  79 #define IPPROTO_NVPII           11              /* network voice protocol*/
  80 #define IPPROTO_PUP             12              /* pup */
  81 #define IPPROTO_ARGUS           13              /* Argus */
  82 #define IPPROTO_EMCON           14              /* EMCON */
  83 #define IPPROTO_XNET            15              /* Cross Net Debugger */
  84 #define IPPROTO_CHAOS           16              /* Chaos*/
  85 #define IPPROTO_UDP             17              /* user datagram protocol */
  86 #define IPPROTO_MUX             18              /* Multiplexing */
  87 #define IPPROTO_MEAS            19              /* DCN Measurement Subsystems */
  88 #define IPPROTO_HMP             20              /* Host Monitoring */
  89 #define IPPROTO_PRM             21              /* Packet Radio Measurement */
  90 #define IPPROTO_IDP             22              /* xns idp */
  91 #define IPPROTO_TRUNK1          23              /* Trunk-1 */
  92 #define IPPROTO_TRUNK2          24              /* Trunk-2 */
  93 #define IPPROTO_LEAF1           25              /* Leaf-1 */
  94 #define IPPROTO_LEAF2           26              /* Leaf-2 */
  95 #define IPPROTO_RDP             27              /* Reliable Data */
  96 #define IPPROTO_IRTP            28              /* Reliable Transaction */
  97 #define IPPROTO_TP              29              /* tp-4 w/ class negotiation */
  98 #define IPPROTO_BLT             30              /* Bulk Data Transfer */
  99 #define IPPROTO_NSP             31              /* Network Services */
 100 #define IPPROTO_INP             32              /* Merit Internodal */
 101 #define IPPROTO_SEP             33              /* Sequential Exchange */
 102 #define IPPROTO_3PC             34              /* Third Party Connect */
 103 #define IPPROTO_IDPR            35              /* InterDomain Policy Routing */
 104 #define IPPROTO_XTP             36              /* XTP */
 105 #define IPPROTO_DDP             37              /* Datagram Delivery */
 106 #define IPPROTO_CMTP            38              /* Control Message Transport */
 107 #define IPPROTO_TPXX            39              /* TP++ Transport */
 108 #define IPPROTO_IL              40              /* IL transport protocol */
 109 #define IPPROTO_IPV6            41              /* IP6 header */
 110 #define IPPROTO_SDRP            42              /* Source Demand Routing */
 111 #define IPPROTO_ROUTING         43              /* IP6 routing header */
 112 #define IPPROTO_FRAGMENT        44              /* IP6 fragmentation header */
 113 #define IPPROTO_IDRP            45              /* InterDomain Routing*/
 114 #define IPPROTO_RSVP            46              /* resource reservation */
 115 #define IPPROTO_GRE             47              /* General Routing Encap. */
 116 #define IPPROTO_MHRP            48              /* Mobile Host Routing */
 117 #define IPPROTO_BHA             49              /* BHA */
 118 #define IPPROTO_ESP             50              /* IP6 Encap Sec. Payload */
 119 #define IPPROTO_AH              51              /* IP6 Auth Header */
 120 #define IPPROTO_INLSP           52              /* Integ. Net Layer Security */
 121 #define IPPROTO_SWIPE           53              /* IP with encryption */
 122 #define IPPROTO_NHRP            54              /* Next Hop Resolution */
 123 #define IPPROTO_MOBILE          55              /* IP Mobility */
 124 #define IPPROTO_TLSP            56              /* Transport Layer Security */
 125 #define IPPROTO_SKIP            57              /* SKIP */
 126 #define IPPROTO_ICMPV6          58              /* ICMP6 */
 127 #define IPPROTO_NONE            59              /* IP6 no next header */
 128 #define IPPROTO_DSTOPTS         60              /* IP6 destination option */
 129 #define IPPROTO_AHIP            61              /* any host internal protocol */
 130 #define IPPROTO_CFTP            62              /* CFTP */
 131 #define IPPROTO_HELLO           63              /* "hello" routing protocol */
 132 #define IPPROTO_SATEXPAK        64              /* SATNET/Backroom EXPAK */
 133 #define IPPROTO_KRYPTOLAN       65              /* Kryptolan */
 134 #define IPPROTO_RVD             66              /* Remote Virtual Disk */
 135 #define IPPROTO_IPPC            67              /* Pluribus Packet Core */
 136 #define IPPROTO_ADFS            68              /* Any distributed FS */
 137 #define IPPROTO_SATMON          69              /* Satnet Monitoring */
 138 #define IPPROTO_VISA            70              /* VISA Protocol */
 139 #define IPPROTO_IPCV            71              /* Packet Core Utility */
 140 #define IPPROTO_CPNX            72              /* Comp. Prot. Net. Executive */
 141 #define IPPROTO_CPHB            73              /* Comp. Prot. HeartBeat */
 142 #define IPPROTO_WSN             74              /* Wang Span Network */
 143 #define IPPROTO_PVP             75              /* Packet Video Protocol */
 144 #define IPPROTO_BRSATMON        76              /* BackRoom SATNET Monitoring */
 145 #define IPPROTO_ND              77              /* Sun net disk proto (temp.) */
 146 #define IPPROTO_WBMON           78              /* WIDEBAND Monitoring */
 147 #define IPPROTO_WBEXPAK         79              /* WIDEBAND EXPAK */
 148 #define IPPROTO_EON             80              /* ISO cnlp */
 149 #define IPPROTO_VMTP            81              /* VMTP */
 150 #define IPPROTO_SVMTP           82              /* Secure VMTP */
 151 #define IPPROTO_VINES           83              /* Banyon VINES */
 152 #define IPPROTO_TTP             84              /* TTP */
 153 #define IPPROTO_IGP             85              /* NSFNET-IGP */
 154 #define IPPROTO_DGP             86              /* dissimilar gateway prot. */
 155 #define IPPROTO_TCF             87              /* TCF */
 156 #define IPPROTO_IGRP            88              /* Cisco/GXS IGRP */
 157 #define IPPROTO_OSPFIGP         89              /* OSPFIGP */
 158 #define IPPROTO_SRPC            90              /* Strite RPC protocol */
 159 #define IPPROTO_LARP            91              /* Locus Address Resoloution */
 160 #define IPPROTO_MTP             92              /* Multicast Transport */
 161 #define IPPROTO_AX25            93              /* AX.25 Frames */
 162 #define IPPROTO_IPEIP           94              /* IP encapsulated in IP */
 163 #define IPPROTO_MICP            95              /* Mobile Int.ing control */
 164 #define IPPROTO_SCCSP           96              /* Semaphore Comm. security */
 165 #define IPPROTO_ETHERIP         97              /* Ethernet IP encapsulation */
 166 #define IPPROTO_ENCAP           98              /* encapsulation header */
 167 #define IPPROTO_APES            99              /* any private encr. scheme */
 168 #define IPPROTO_GMTP            100             /* GMTP*/
 169 #define IPPROTO_IPCOMP          108             /* payload compression (IPComp) */
 170 /* 101-254: Partly Unassigned */
 171 #define IPPROTO_PIM             103             /* Protocol Independent Mcast */
 172 #define IPPROTO_CARP            112             /* CARP */
 173 #define IPPROTO_PGM             113             /* PGM */
 174 #define IPPROTO_SCTP            132             /* SCTP */
 175 #define IPPROTO_PFSYNC          240             /* PFSYNC */
 176 /* 255: Reserved */
 177 /* BSD Private, local use, namespace incursion */
 178 #define IPPROTO_DIVERT          254             /* divert pseudo-protocol */
 179 #define IPPROTO_RAW             255             /* raw IP packet */
 180 #define IPPROTO_MAX             256
 181
 182 /* last return value of *_input(), meaning "all job for this pkt is done".  */
 183 #define IPPROTO_DONE            257
 184
 185 /* Used by RSS: the layer3 protocol is unknown */
 186 #define IPPROTO_UNKNOWN         258
 187
 188 /*
 189  * Local port number conventions:
 190  *
 191  * When a user does a bind(2) or connect(2) with a port number of zero,
 192  * a non-conflicting local port address is chosen.
 193  * The default range is IPPORT_RESERVED through
 194  * IPPORT_USERRESERVED, although that is settable by sysctl.
 195  *
 196  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 197  * default assignment range.
 198  *
 199  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 200  *
 201  * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
 202  * into the "high" range.  These are reserved for client outbound connections
 203  * which do not want to be filtered by any firewalls.
 204  *
 205  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 206  * that is (by convention) restricted to privileged processes.  This
 207  * convention is based on "vouchsafe" principles only.  It is only secure
 208  * if you trust the remote host to restrict these ports.
 209  *
 210  * The default range of ports and the high range can be changed by
 211  * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
 212  *
 213  * Changing those values has bad security implications if you are
 214  * using a a stateless firewall that is allowing packets outside of that
 215  * range in order to allow transparent outgoing connections.
 216  *
 217  * Such a firewall configuration will generally depend on the use of these
 218  * default values.  If you change them, you may find your Security
 219  * Administrator looking for you with a heavy object.
 220  *
 221  * For a slightly more orthodox text view on this:
 222  *   ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
 223  *
 224  *   port numbers are divided into three ranges:
 225  *              0 -  1023 Well Known Ports
 226  *           1024 - 49151 Registered Ports
 227  *          49152 - 65535 Dynamic and/or Private Ports
 228  */
 229
 230 /*
 231  * Ports < IPPORT_RESERVED are reserved for
 232  * privileged processes (e.g. root).  (IP_PORTRANGE_LOW)
 233  * Ports > IPPORT_USERRESERVED are reserved
 234  * for servers, not necessarily privileged.  (IP_PORTRANGE_DEFAULT)
 235  */
 236 #define IPPORT_RESERVED         1024
 237 #define IPPORT_USERRESERVED     5000
 238
 239 /*
 240  * Default local port range to use by setting IP_PORTRANGE_HIGH
 241  */
 242 #define IPPORT_HIFIRSTAUTO      49152
 243 #define IPPORT_HILASTAUTO       65535
 244
 245 /*
 246  * Scanning for a free reserved port return a value below IPPORT_RESERVED,
 247  * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
 248  * 512, but that conflicts with some well-known-services that firewalls may
 249  * have a fit if we use.
 250  */
 251 #define IPPORT_RESERVEDSTART    600
 252
 253 #ifndef _STRUCT_IN_ADDR_DECLARED
 254 #define _STRUCT_IN_ADDR_DECLARED
 255 /*
 256  * Internet address (a structure for historical reasons)
 257  */
 258 struct in_addr {
 259         in_addr_t s_addr;
 260 };
 261 #endif
 262
 263 /*
 264  * Definitions of bits in internet address integers.
 265  * On subnets, the decomposition of addresses to host and net parts
 266  * is done according to subnet mask, not the masks here.
 267  */
 268 #define IN_CLASSA(i)            (((u_int32_t)(i) & 0x80000000) == 0)
 269 #define IN_CLASSA_NET           0xff000000
 270 #define IN_CLASSA_NSHIFT        24
 271 #define IN_CLASSA_HOST          0x00ffffff
 272 #define IN_CLASSA_MAX           128
 273
 274 #define IN_CLASSB(i)            (((u_int32_t)(i) & 0xc0000000) == 0x80000000)
 275 #define IN_CLASSB_NET           0xffff0000
 276 #define IN_CLASSB_NSHIFT        16
 277 #define IN_CLASSB_HOST          0x0000ffff
 278 #define IN_CLASSB_MAX           65536
 279
 280 #define IN_CLASSC(i)            (((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
 281 #define IN_CLASSC_NET           0xffffff00
 282 #define IN_CLASSC_NSHIFT        8
 283 #define IN_CLASSC_HOST          0x000000ff
 284
 285 #define IN_CLASSD(i)            (((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
 286 #define IN_CLASSD_NET           0xf0000000      /* These ones aren't really */
 287 #define IN_CLASSD_NSHIFT        28              /* net and host fields, but */
 288 #define IN_CLASSD_HOST          0x0fffffff      /* routing needn't know.    */
 289 #define IN_MULTICAST(i)         IN_CLASSD(i)
 290
 291 #define IN_EXPERIMENTAL(i)      (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
 292 #define IN_BADCLASS(i)          (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
 293
 294 #define INADDR_ANY              (u_int32_t)0x00000000
 295 #define INADDR_LOOPBACK         (u_int32_t)0x7f000001
 296 #define INADDR_BROADCAST        (u_int32_t)0xffffffff   /* must be masked */
 297 #ifndef _KERNEL
 298 #define INADDR_NONE             0xffffffff              /* -1 return */
 299 #endif
 300
 301 #define INADDR_UNSPEC_GROUP     (u_int32_t)0xe0000000   /* 224.0.0.0 */
 302 #define INADDR_ALLHOSTS_GROUP   (u_int32_t)0xe0000001   /* 224.0.0.1 */
 303 #define INADDR_ALLRTRS_GROUP    (u_int32_t)0xe0000002   /* 224.0.0.2 */
 304 #define INADDR_CARP_GROUP       (u_int32_t)0xe0000012   /* 224.0.0.18 */
 305 #define INADDR_PFSYNC_GROUP     (u_int32_t)0xe00000f0   /* 224.0.0.240 */
 306 #define INADDR_MAX_LOCAL_GROUP  (u_int32_t)0xe00000ff   /* 224.0.0.255 */
 307
 308 #define IN_LOOPBACKNET          127                     /* official! */
 309
 310 /*
 311  * Socket address, internet style.
 312  */
 313 struct sockaddr_in {
 314         u_char  sin_len;
 315         u_char  sin_family;
 316         u_short sin_port;
 317         struct  in_addr sin_addr;
 318         char    sin_zero[8];
 319 };
 320
 321 #define INET_ADDRSTRLEN         16
 322
 323 /*
 324  * Options for use with [gs]etsockopt at the IP level.
 325  * First word of comment is data type; bool is stored in int.
 326  */
 327 #define IP_OPTIONS              1    /* buf/ip_opts; set/get IP options */
 328 #define IP_HDRINCL              2    /* int; header is included with data */
 329 #define IP_TOS                  3    /* int; IP type of service and preced. */
 330 #define IP_TTL                  4    /* int; IP time to live */
 331 #define IP_RECVOPTS             5    /* bool; receive all IP opts w/dgram */
 332 #define IP_RECVRETOPTS          6    /* bool; receive IP opts for response */
 333 #define IP_RECVDSTADDR          7    /* bool; receive IP dst addr w/dgram */
 334 #define IP_RETOPTS              8    /* ip_opts; set/get IP options */
 335 #define IP_MULTICAST_IF         9    /* u_char; set/get IP multicast i/f  */
 336 #define IP_MULTICAST_TTL        10   /* u_char; set/get IP multicast ttl */
 337 #define IP_MULTICAST_LOOP       11   /* u_char; set/get IP multicast loopback */
 338 #define IP_ADD_MEMBERSHIP       12   /* ip_mreq; add an IP group membership */
 339 #define IP_DROP_MEMBERSHIP      13   /* ip_mreq; drop an IP group membership */
 340 #define IP_MULTICAST_VIF        14   /* set/get IP mcast virt. iface */
 341 #define IP_RSVP_ON              15   /* enable RSVP in kernel */
 342 #define IP_RSVP_OFF             16   /* disable RSVP in kernel */
 343 #define IP_RSVP_VIF_ON          17   /* set RSVP per-vif socket */
 344 #define IP_RSVP_VIF_OFF         18   /* unset RSVP per-vif socket */
 345 #define IP_PORTRANGE            19   /* int; range to choose for unspec port */
 346 #define IP_RECVIF               20   /* bool; receive reception if w/dgram */
 347 /* for IPSEC */
 348 #define IP_IPSEC_POLICY         21   /* int; set/get security policy */
 349 #define IP_FAITH                22   /* bool; accept FAITH'ed connections */
 350
 351 #define IP_FW_ADD               50   /* add a firewall rule to chain */
 352 #define IP_FW_DEL               51   /* delete a firewall rule from chain */
 353 #define IP_FW_FLUSH             52   /* flush firewall rule chain */
 354 #define IP_FW_ZERO              53   /* clear single/all firewall counter(s) */
 355 #define IP_FW_GET               54   /* get entire firewall rule chain */
 356 #define IP_FW_RESETLOG          55   /* reset logging counters */
 357
 358 #define IP_DUMMYNET_CONFIGURE   60   /* add/configure a dummynet pipe */
 359 #define IP_DUMMYNET_DEL         61   /* delete a dummynet pipe from chain */
 360 #define IP_DUMMYNET_FLUSH       62   /* flush dummynet */
 361 #define IP_DUMMYNET_GET         64   /* get entire dummynet pipes */
 362
 363 #define IP_RECVTTL              65   /* bool; receive IP TTL w/dgram */
 364 #define IP_MINTTL               66   /* minimum TTL for packet or drop */
 365
 366 /*
 367  * Defaults and limits for options
 368  */
 369 #define IP_DEFAULT_MULTICAST_TTL  1     /* normally limit m'casts to 1 hop  */
 370 #define IP_DEFAULT_MULTICAST_LOOP 1     /* normally hear sends if a member  */
 371 #define IP_MAX_MEMBERSHIPS      20      /* per socket */
 372
 373 /*
 374  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
 375  */
 376 struct ip_mreq {
 377         struct  in_addr imr_multiaddr;  /* IP multicast address of group */
 378         struct  in_addr imr_interface;  /* local IP address of interface */
 379 };
 380
 381 /*
 382  * Argument for IP_PORTRANGE:
 383  * - which range to search when port is unspecified at bind() or connect()
 384  */
 385 #define IP_PORTRANGE_DEFAULT    0       /* default range */
 386 #define IP_PORTRANGE_HIGH       1       /* "high" - request firewall bypass */
 387 #define IP_PORTRANGE_LOW        2       /* "low" - vouchsafe security */
 388
 389 /*
 390  * Definitions for inet sysctl operations.
 391  *
 392  * Third level is protocol number.
 393  * Fourth level is desired variable within that protocol.
 394  */
 395 #define IPPROTO_MAXID   (IPPROTO_AH + 1)        /* don't list to IPPROTO_MAX */
 396
 397 #define CTL_IPPROTO_NAMES { \
 398         { "ip", CTLTYPE_NODE }, \
 399         { "icmp", CTLTYPE_NODE }, \
 400         { "igmp", CTLTYPE_NODE }, \
 401         { "ggp", CTLTYPE_NODE }, \
 402         { 0, 0 }, \
 403         { 0, 0 }, \
 404         { "tcp", CTLTYPE_NODE }, \
 405         { 0, 0 }, \
 406         { "egp", CTLTYPE_NODE }, \
 407         { 0, 0 }, \
 408         { 0, 0 }, \
 409         { 0, 0 }, \
 410         { "pup", CTLTYPE_NODE }, \
 411         { 0, 0 }, \
 412         { 0, 0 }, \
 413         { 0, 0 }, \
 414         { 0, 0 }, \
 415         { "udp", CTLTYPE_NODE }, \
 416         { 0, 0 }, \
 417         { 0, 0 }, \
 418         { 0, 0 }, \
 419         { 0, 0 }, \
 420         { "idp", CTLTYPE_NODE }, \
 421         { 0, 0 }, \
 422         { 0, 0 }, \
 423         { 0, 0 }, \
 424         { 0, 0 }, \
 425         { 0, 0 }, \
 426         { 0, 0 }, \
 427         { 0, 0 }, \
 428         { 0, 0 }, \
 429         { 0, 0 }, \
 430         { 0, 0 }, \
 431         { 0, 0 }, \
 432         { 0, 0 }, \
 433         { 0, 0 }, \
 434         { 0, 0 }, \
 435         { 0, 0 }, \
 436         { 0, 0 }, \
 437         { 0, 0 }, \
 438         { 0, 0 }, \
 439         { 0, 0 }, \
 440         { 0, 0 }, \
 441         { 0, 0 }, \
 442         { 0, 0 }, \
 443         { 0, 0 }, \
 444         { 0, 0 }, \
 445         { 0, 0 }, \
 446         { 0, 0 }, \
 447         { 0, 0 }, \
 448         { 0, 0 }, \
 449         { "ipsec", CTLTYPE_NODE }, \
 450         { 0, 0 }, \
 451         { 0, 0 }, \
 452         { 0, 0 }, \
 453         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 454         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 455         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 456         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 457         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 458         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 459         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 460         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 461         { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
 462         { 0, 0 }, \
 463         { 0, 0 }, \
 464         { 0, 0 }, \
 465         { "pim", CTLTYPE_NODE }, \
 466 }
 467
 468 /*
 469  * Names for IP sysctl objects
 470  */
 471 #define IPCTL_FORWARDING        1       /* act as router */
 472 #define IPCTL_SENDREDIRECTS     2       /* may send redirects when forwarding */
 473 #define IPCTL_DEFTTL            3       /* default TTL */
 474 #ifdef notyet
 475 #define IPCTL_DEFMTU            4       /* default MTU */
 476 #endif
 477 #define IPCTL_RTEXPIRE          5       /* cloned route expiration time */
 478 #define IPCTL_RTMINEXPIRE       6       /* min value for expiration time */
 479 #define IPCTL_RTMAXCACHE        7       /* trigger level for dynamic expire */
 480 #define IPCTL_SOURCEROUTE       8       /* may perform source routes */
 481 #define IPCTL_DIRECTEDBROADCAST 9       /* may re-broadcast received packets */
 482 #define IPCTL_INTRQMAXLEN       10      /* max length of netisr queue */
 483 #define IPCTL_INTRQDROPS        11      /* number of netisr q drops */
 484 #define IPCTL_STATS             12      /* ipstat structure */
 485 #define IPCTL_ACCEPTSOURCEROUTE 13      /* may accept source routed packets */
 486 #define IPCTL_FASTFORWARDING    14      /* use fast IP forwarding code */
 487 #define IPCTL_KEEPFAITH         15      /* FAITH IPv4->IPv6 translater ctl */
 488 #define IPCTL_GIF_TTL           16      /* default TTL for gif encap packet */
 489 #define IPCTL_MAXID             17
 490
 491 #define IPCTL_NAMES { \
 492         { 0, 0 }, \
 493         { "forwarding", CTLTYPE_INT }, \
 494         { "redirect", CTLTYPE_INT }, \
 495         { "ttl", CTLTYPE_INT }, \
 496         { "mtu", CTLTYPE_INT }, \
 497         { "rtexpire", CTLTYPE_INT }, \
 498         { "rtminexpire", CTLTYPE_INT }, \
 499         { "rtmaxcache", CTLTYPE_INT }, \
 500         { "sourceroute", CTLTYPE_INT }, \
 501         { "directed-broadcast", CTLTYPE_INT }, \
 502         { "intr-queue-maxlen", CTLTYPE_INT }, \
 503         { "intr-queue-drops", CTLTYPE_INT }, \
 504         { "stats", CTLTYPE_STRUCT }, \
 505         { "accept_sourceroute", CTLTYPE_INT }, \
 506         { "fastforwarding", CTLTYPE_INT }, \
 507 }
 508
 509 #ifdef _KERNEL
 510 struct ifnet; struct mbuf;      /* forward declarations for Standard C */
 511 #endif
 512
 513 /* INET6 stuff */
 514 #define __KAME_NETINET_IN_H_INCLUDED_
 515 #include <netinet6/in6.h>
 516 #undef __KAME_NETINET_IN_H_INCLUDED_
 517
 518 #ifdef _KERNEL
 519
 520 struct thread;
 521
 522 int      in_broadcast (struct in_addr, struct ifnet *);
 523 int      in_canforward (struct in_addr);
 524 int      in_localaddr (struct in_addr);
 525 char    *inet_ntoa (struct in_addr); /* in libkern */
 526
 527 int     prison_replace_wildcards (struct thread *td, struct sockaddr *ip);
 528 int     prison_remote_ip (struct thread *td, struct sockaddr *ip);
 529
 530 #define in_hosteq(s, t) ((s).s_addr == (t).s_addr)
 531 #define in_nullhost(x)  ((x).s_addr == INADDR_ANY)
 532
 533 #define satosin(sa)     ((struct sockaddr_in *)(sa))
 534 #define sintosa(sin)    ((struct sockaddr *)(sin))
 535 #define ifatoia(ifa)    ((struct in_ifaddr *)(ifa))
 536
 537 #endif
 538
 539 #endif