bsd/netinet/in.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1982, 1986, 1990, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  55  */
  56
  57 #ifndef _NETINET_IN_H_
  58 #define _NETINET_IN_H_
  59
  60 /*
  61  * Constants and structures defined by the internet system,
  62  * Per RFC 790, September 1981, and numerous additions.
  63  */
  64
  65 /*
  66  * Protocols (RFC 1700)
  67  */
  68 #define IPPROTO_IP              0               /* dummy for IP */
  69 #define         IPPROTO_HOPOPTS 0               /* IP6 hop-by-hop options */
  70 #define IPPROTO_ICMP            1               /* control message protocol */
  71 #define IPPROTO_IGMP            2               /* group mgmt protocol */
  72 #define IPPROTO_GGP             3               /* gateway^2 (deprecated) */
  73 #define         IPPROTO_IPIP            4               /* IP encapsulation in IP */
  74 #define         IPPROTO_IPV4            4               /* IP header */
  75 #define IPPROTO_TCP             6               /* tcp */
  76 #define IPPROTO_ST              7               /* Stream protocol II */
  77 #define IPPROTO_EGP             8               /* exterior gateway protocol */
  78 #define IPPROTO_PIGP            9               /* private interior gateway */
  79 #define IPPROTO_RCCMON          10              /* BBN RCC Monitoring */
  80 #define IPPROTO_NVPII           11              /* network voice protocol*/
  81 #define IPPROTO_PUP             12              /* pup */
  82 #define IPPROTO_ARGUS           13              /* Argus */
  83 #define IPPROTO_EMCON           14              /* EMCON */
  84 #define IPPROTO_XNET            15              /* Cross Net Debugger */
  85 #define IPPROTO_CHAOS           16              /* Chaos*/
  86 #define IPPROTO_UDP             17              /* user datagram protocol */
  87 #define IPPROTO_MUX             18              /* Multiplexing */
  88 #define IPPROTO_MEAS            19              /* DCN Measurement Subsystems */
  89 #define IPPROTO_HMP             20              /* Host Monitoring */
  90 #define IPPROTO_PRM             21              /* Packet Radio Measurement */
  91 #define IPPROTO_IDP             22              /* xns idp */
  92 #define IPPROTO_TRUNK1          23              /* Trunk-1 */
  93 #define IPPROTO_TRUNK2          24              /* Trunk-2 */
  94 #define IPPROTO_LEAF1           25              /* Leaf-1 */
  95 #define IPPROTO_LEAF2           26              /* Leaf-2 */
  96 #define IPPROTO_RDP             27              /* Reliable Data */
  97 #define IPPROTO_IRTP            28              /* Reliable Transaction */
  98 #define IPPROTO_TP              29              /* tp-4 w/ class negotiation */
  99 #define IPPROTO_BLT             30              /* Bulk Data Transfer */
 100 #define IPPROTO_NSP             31              /* Network Services */
 101 #define IPPROTO_INP             32              /* Merit Internodal */
 102 #define IPPROTO_SEP             33              /* Sequential Exchange */
 103 #define IPPROTO_3PC             34              /* Third Party Connect */
 104 #define IPPROTO_IDPR            35              /* InterDomain Policy Routing */
 105 #define IPPROTO_XTP             36              /* XTP */
 106 #define IPPROTO_DDP             37              /* Datagram Delivery */
 107 #define IPPROTO_CMTP            38              /* Control Message Transport */
 108 #define IPPROTO_TPXX            39              /* TP++ Transport */
 109 #define IPPROTO_IL              40              /* IL transport protocol */
 110 #define         IPPROTO_IPV6            41              /* IP6 header */
 111 #define IPPROTO_SDRP            42              /* Source Demand Routing */
 112 #define         IPPROTO_ROUTING 43              /* IP6 routing header */
 113 #define         IPPROTO_FRAGMENT        44              /* IP6 fragmentation header */
 114 #define IPPROTO_IDRP            45              /* InterDomain Routing*/
 115 #define         IPPROTO_RSVP            46              /* resource reservation */
 116 #define IPPROTO_GRE             47              /* General Routing Encap. */
 117 #define IPPROTO_MHRP            48              /* Mobile Host Routing */
 118 #define IPPROTO_BHA             49              /* BHA */
 119 #define IPPROTO_ESP             50              /* SIPP Encap Sec. Payload */
 120 #define IPPROTO_AH              51              /* SIPP Auth Header */
 121 #define IPPROTO_INLSP           52              /* Integ. Net Layer Security */
 122 #define IPPROTO_SWIPE           53              /* IP with encryption */
 123 #define IPPROTO_NHRP            54              /* Next Hop Resolution */
 124 /* 55-57: Unassigned */
 125 #define         IPPROTO_ICMPV6  58              /* ICMP6 */
 126 #define         IPPROTO_NONE            59              /* IP6 no next header */
 127 #define         IPPROTO_DSTOPTS 60              /* IP6 destination option */
 128 #define IPPROTO_AHIP            61              /* any host internal protocol */
 129 #define IPPROTO_CFTP            62              /* CFTP */
 130 #define IPPROTO_HELLO           63              /* "hello" routing protocol */
 131 #define IPPROTO_SATEXPAK        64              /* SATNET/Backroom EXPAK */
 132 #define IPPROTO_KRYPTOLAN       65              /* Kryptolan */
 133 #define IPPROTO_RVD             66              /* Remote Virtual Disk */
 134 #define IPPROTO_IPPC            67              /* Pluribus Packet Core */
 135 #define IPPROTO_ADFS            68              /* Any distributed FS */
 136 #define IPPROTO_SATMON          69              /* Satnet Monitoring */
 137 #define IPPROTO_VISA            70              /* VISA Protocol */
 138 #define IPPROTO_IPCV            71              /* Packet Core Utility */
 139 #define IPPROTO_CPNX            72              /* Comp. Prot. Net. Executive */
 140 #define IPPROTO_CPHB            73              /* Comp. Prot. HeartBeat */
 141 #define IPPROTO_WSN             74              /* Wang Span Network */
 142 #define IPPROTO_PVP             75              /* Packet Video Protocol */
 143 #define IPPROTO_BRSATMON        76              /* BackRoom SATNET Monitoring */
 144 #define IPPROTO_ND              77              /* Sun net disk proto (temp.) */
 145 #define IPPROTO_WBMON           78              /* WIDEBAND Monitoring */
 146 #define IPPROTO_WBEXPAK         79              /* WIDEBAND EXPAK */
 147 #define IPPROTO_EON             80              /* ISO cnlp */
 148 #define IPPROTO_VMTP            81              /* VMTP */
 149 #define IPPROTO_SVMTP           82              /* Secure VMTP */
 150 #define IPPROTO_VINES           83              /* Banyon VINES */
 151 #define IPPROTO_TTP             84              /* TTP */
 152 #define IPPROTO_IGP             85              /* NSFNET-IGP */
 153 #define IPPROTO_DGP             86              /* dissimilar gateway prot. */
 154 #define IPPROTO_TCF             87              /* TCF */
 155 #define IPPROTO_IGRP            88              /* Cisco/GXS IGRP */
 156 #define IPPROTO_OSPFIGP         89              /* OSPFIGP */
 157 #define IPPROTO_SRPC            90              /* Strite RPC protocol */
 158 #define IPPROTO_LARP            91              /* Locus Address Resoloution */
 159 #define IPPROTO_MTP             92              /* Multicast Transport */
 160 #define IPPROTO_AX25            93              /* AX.25 Frames */
 161 #define IPPROTO_IPEIP           94              /* IP encapsulated in IP */
 162 #define IPPROTO_MICP            95              /* Mobile Int.ing control */
 163 #define IPPROTO_SCCSP           96              /* Semaphore Comm. security */
 164 #define IPPROTO_ETHERIP         97              /* Ethernet IP encapsulation */
 165 #define IPPROTO_ENCAP           98              /* encapsulation header */
 166 #define IPPROTO_APES            99              /* any private encr. scheme */
 167 #define IPPROTO_GMTP            100             /* GMTP*/
 168 #define IPPROTO_IPCOMP  108             /* payload compression (IPComp) */
 169 /* 101-254: Partly Unassigned */
 170 #if defined(PM)
 171 #define IPPROTO_PM              101             /* PM - Packet Management by SuMiRe */
 172 #endif
 173 #define         IPPROTO_PIM             103             /* Protocol Independent Mcast */
 174 #define IPPROTO_PGM             113             /* PGM */
 175 /* 255: Reserved */
 176 /* BSD Private, local use, namespace incursion */
 177 #define IPPROTO_DIVERT          254             /* divert pseudo-protocol */
 178 #define IPPROTO_RAW             255             /* raw IP packet */
 179 #define IPPROTO_MAX             256
 180
 181 /* last return value of *_input(), meaning "all job for this pkt is done".  */
 182 #define IPPROTO_DONE            257
 183
 184 /*
 185  * Local port number conventions:
 186  *
 187  * When a user does a bind(2) or connect(2) with a port number of zero,
 188  * a non-conflicting local port address is chosen.
 189  * The default range is IPPORT_RESERVED through
 190  * IPPORT_USERRESERVED, although that is settable by sysctl.
 191  *
 192  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 193  * default assignment range.
 194  *
 195  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 196  *
 197  * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
 198  * into the "high" range.  These are reserved for client outbound connections
 199  * which do not want to be filtered by any firewalls.
 200  *
 201  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 202  * that is (by convention) restricted to privileged processes.  This
 203  * convention is based on "vouchsafe" principles only.  It is only secure
 204  * if you trust the remote host to restrict these ports.
 205  *
 206  * The default range of ports and the high range can be changed by
 207  * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
 208  *
 209  * Changing those values has bad security implications if you are
 210  * using a a stateless firewall that is allowing packets outside of that
 211  * range in order to allow transparent outgoing connections.
 212  *
 213  * Such a firewall configuration will generally depend on the use of these
 214  * default values.  If you change them, you may find your Security
 215  * Administrator looking for you with a heavy object.
 216  *
 217  * For a slightly more orthodox text view on this:
 218  *
 219  *            ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
 220  *
 221  *    port numbers are divided into three ranges:
 222  *
 223  *                0 -  1023 Well Known Ports
 224  *             1024 - 49151 Registered Ports
 225  *            49152 - 65535 Dynamic and/or Private Ports
 226  *
 227  */
 228
 229 /*
 230  * Ports < IPPORT_RESERVED are reserved for
 231  * privileged processes (e.g. root).         (IP_PORTRANGE_LOW)
 232  * Ports > IPPORT_USERRESERVED are reserved
 233  * for servers, not necessarily privileged.  (IP_PORTRANGE_DEFAULT)
 234  */
 235 #define IPPORT_RESERVED         1024
 236 #define IPPORT_USERRESERVED     5000
 237
 238 /*
 239  * Default local port range to use by setting IP_PORTRANGE_HIGH
 240  */
 241 #define IPPORT_HIFIRSTAUTO      49152
 242 #define IPPORT_HILASTAUTO       65535
 243
 244 /*
 245  * Scanning for a free reserved port return a value below IPPORT_RESERVED,
 246  * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
 247  * 512, but that conflicts with some well-known-services that firewalls may
 248  * have a fit if we use.
 249  */
 250 #define IPPORT_RESERVEDSTART    600
 251
 252 /*
 253  * Internet address (a structure for historical reasons)
 254  */
 255 struct in_addr {
 256         u_int32_t s_addr;
 257 };
 258
 259 /*
 260  * Definitions of bits in internet address integers.
 261  * On subnets, the decomposition of addresses to host and net parts
 262  * is done according to subnet mask, not the masks here.
 263  */
 264 #define IN_CLASSA(i)            (((u_int32_t)(i) & 0x80000000) == 0)
 265 #define IN_CLASSA_NET           0xff000000
 266 #define IN_CLASSA_NSHIFT        24
 267 #define IN_CLASSA_HOST          0x00ffffff
 268 #define IN_CLASSA_MAX           128
 269
 270 #define IN_CLASSB(i)            (((u_int32_t)(i) & 0xc0000000) == 0x80000000)
 271 #define IN_CLASSB_NET           0xffff0000
 272 #define IN_CLASSB_NSHIFT        16
 273 #define IN_CLASSB_HOST          0x0000ffff
 274 #define IN_CLASSB_MAX           65536
 275
 276 #define IN_CLASSC(i)            (((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
 277 #define IN_CLASSC_NET           0xffffff00
 278 #define IN_CLASSC_NSHIFT        8
 279 #define IN_CLASSC_HOST          0x000000ff
 280
 281 #define IN_CLASSD(i)            (((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
 282 #define IN_CLASSD_NET           0xf0000000      /* These ones aren't really */
 283 #define IN_CLASSD_NSHIFT        28              /* net and host fields, but */
 284 #define IN_CLASSD_HOST          0x0fffffff      /* routing needn't know.    */
 285 #define IN_MULTICAST(i)         IN_CLASSD(i)
 286
 287 #define IN_EXPERIMENTAL(i)      (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
 288 #define IN_BADCLASS(i)          (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
 289
 290 #define INADDR_ANY              (u_int32_t)0x00000000
 291 #define INADDR_LOOPBACK         (u_int32_t)0x7f000001
 292 #define INADDR_BROADCAST        (u_int32_t)0xffffffff   /* must be masked */
 293 #ifndef KERNEL
 294 #define INADDR_NONE             0xffffffff              /* -1 return */
 295 #endif
 296
 297 #define INADDR_UNSPEC_GROUP     (u_int32_t)0xe0000000   /* 224.0.0.0 */
 298 #define INADDR_ALLHOSTS_GROUP   (u_int32_t)0xe0000001   /* 224.0.0.1 */
 299 #define INADDR_ALLRTRS_GROUP    (u_int32_t)0xe0000002   /* 224.0.0.2 */
 300 #define INADDR_MAX_LOCAL_GROUP  (u_int32_t)0xe00000ff   /* 224.0.0.255 */
 301
 302 #define IN_LINKLOCALNETNUM      (u_int32_t)0xA9FE0000 /* 169.254.0.0 */
 303 #define IN_LINKLOCAL(i)         (((u_int32_t)(i) & IN_CLASSB_NET) == IN_LINKLOCALNETNUM)
 304
 305 #define IN_LOOPBACKNET          127                     /* official! */
 306
 307 /*
 308  * Socket address, internet style.
 309  */
 310 struct sockaddr_in {
 311         u_char  sin_len;
 312         u_char  sin_family;
 313         u_short sin_port;
 314         struct  in_addr sin_addr;
 315         char    sin_zero[8];
 316 };
 317
 318 #define INET_ADDRSTRLEN                 16
 319
 320 /*
 321  * Structure used to describe IP options.
 322  * Used to store options internally, to pass them to a process,
 323  * or to restore options retrieved earlier.
 324  * The ip_dst is used for the first-hop gateway when using a source route
 325  * (this gets put into the header proper).
 326  */
 327 struct ip_opts {
 328         struct  in_addr ip_dst;         /* first hop, 0 w/o src rt */
 329         char    ip_opts[40];            /* actually variable in size */
 330 };
 331
 332 /*
 333  * Options for use with [gs]etsockopt at the IP level.
 334  * First word of comment is data type; bool is stored in int.
 335  */
 336 #define IP_OPTIONS              1    /* buf/ip_opts; set/get IP options */
 337 #define IP_HDRINCL              2    /* int; header is included with data */
 338 #define IP_TOS                  3    /* int; IP type of service and preced. */
 339 #define IP_TTL                  4    /* int; IP time to live */
 340 #define IP_RECVOPTS             5    /* bool; receive all IP opts w/dgram */
 341 #define IP_RECVRETOPTS          6    /* bool; receive IP opts for response */
 342 #define IP_RECVDSTADDR          7    /* bool; receive IP dst addr w/dgram */
 343 #define IP_RETOPTS              8    /* ip_opts; set/get IP options */
 344 #define IP_MULTICAST_IF         9    /* u_char; set/get IP multicast i/f  */
 345 #define IP_MULTICAST_TTL        10   /* u_char; set/get IP multicast ttl */
 346 #define IP_MULTICAST_LOOP       11   /* u_char; set/get IP multicast loopback */
 347 #define IP_ADD_MEMBERSHIP       12   /* ip_mreq; add an IP group membership */
 348 #define IP_DROP_MEMBERSHIP      13   /* ip_mreq; drop an IP group membership */
 349 #define IP_MULTICAST_VIF        14   /* set/get IP mcast virt. iface */
 350 #define IP_RSVP_ON              15   /* enable RSVP in kernel */
 351 #define IP_RSVP_OFF             16   /* disable RSVP in kernel */
 352 #define IP_RSVP_VIF_ON          17   /* set RSVP per-vif socket */
 353 #define IP_RSVP_VIF_OFF         18   /* unset RSVP per-vif socket */
 354 #define IP_PORTRANGE            19   /* int; range to choose for unspec port */
 355 #define IP_RECVIF               20   /* bool; receive reception if w/dgram */
 356 #define IP_IPSEC_POLICY         21   /* int; set/get security policy */
 357 #define IP_FAITH                22   /* bool; accept FAITH'ed connections */
 358 #define IP_STRIPHDR             23   /* bool: drop receive of raw IP header */
 359
 360
 361 #define IP_FW_ADD               50   /* add a firewall rule to chain */
 362 #define IP_FW_DEL               51   /* delete a firewall rule from chain */
 363 #define IP_FW_FLUSH             52   /* flush firewall rule chain */
 364 #define IP_FW_ZERO              53   /* clear single/all firewall counter(s) */
 365 #define IP_FW_GET               54   /* get entire firewall rule chain */
 366 #define IP_NAT                  55   /* set/get NAT opts */
 367 #define IP_FW_RESETLOG          56   /* reset logging counters */
 368
 369 #define IP_DUMMYNET_CONFIGURE   60   /* add/configure a dummynet pipe */
 370 #define IP_DUMMYNET_DEL         61   /* delete a dummynet pipe from chain */
 371 #define IP_DUMMYNET_FLUSH       62   /* flush dummynet */
 372 #define IP_DUMMYNET_GET         64   /* get entire dummynet pipes */
 373
 374 /*
 375  * Defaults and limits for options
 376  */
 377 #define IP_DEFAULT_MULTICAST_TTL  1     /* normally limit m'casts to 1 hop  */
 378 #define IP_DEFAULT_MULTICAST_LOOP 1     /* normally hear sends if a member  */
 379 #define IP_MAX_MEMBERSHIPS      20      /* per socket */
 380
 381 /*
 382  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
 383  */
 384 struct ip_mreq {
 385         struct  in_addr imr_multiaddr;  /* IP multicast address of group */
 386         struct  in_addr imr_interface;  /* local IP address of interface */
 387 };
 388
 389 /*
 390  * Argument for IP_PORTRANGE:
 391  * - which range to search when port is unspecified at bind() or connect()
 392  */
 393 #define IP_PORTRANGE_DEFAULT    0       /* default range */
 394 #define IP_PORTRANGE_HIGH       1       /* "high" - request firewall bypass */
 395 #define IP_PORTRANGE_LOW        2       /* "low" - vouchsafe security */
 396
 397 /*
 398  * Definitions for inet sysctl operations.
 399  *
 400  * Third level is protocol number.
 401  * Fourth level is desired variable within that protocol.
 402  */
 403 #define IPPROTO_MAXID   (IPPROTO_ESP + 1)       /* don't list to IPPROTO_MAX */
 404
 405 #define CTL_IPPROTO_NAMES { \
 406         { "ip", CTLTYPE_NODE }, \
 407         { "icmp", CTLTYPE_NODE }, \
 408         { "igmp", CTLTYPE_NODE }, \
 409         { "ggp", CTLTYPE_NODE }, \
 410         { 0, 0 }, \
 411         { 0, 0 }, \
 412         { "tcp", CTLTYPE_NODE }, \
 413         { 0, 0 }, \
 414         { "egp", CTLTYPE_NODE }, \
 415         { 0, 0 }, \
 416         { 0, 0 }, \
 417         { 0, 0 }, \
 418         { "pup", CTLTYPE_NODE }, \
 419         { 0, 0 }, \
 420         { 0, 0 }, \
 421         { 0, 0 }, \
 422         { 0, 0 }, \
 423         { "udp", CTLTYPE_NODE }, \
 424         { 0, 0 }, \
 425         { 0, 0 }, \
 426         { 0, 0 }, \
 427         { 0, 0 }, \
 428         { "idp", CTLTYPE_NODE }, \
 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         { 0, 0 }, \
 450         { 0, 0 }, \
 451         { 0, 0 }, \
 452         { 0, 0 }, \
 453         { 0, 0 }, \
 454         { 0, 0 }, \
 455         { 0, 0 }, \
 456         { 0, 0 }, \
 457         { "ipsec", CTLTYPE_NODE }, \
 458 }
 459
 460 /*
 461  * Names for IP sysctl objects
 462  */
 463 #define IPCTL_FORWARDING        1       /* act as router */
 464 #define IPCTL_SENDREDIRECTS     2       /* may send redirects when forwarding */
 465 #define IPCTL_DEFTTL            3       /* default TTL */
 466 #ifdef notyet
 467 #define IPCTL_DEFMTU            4       /* default MTU */
 468 #endif
 469 #define IPCTL_RTEXPIRE          5       /* cloned route expiration time */
 470 #define IPCTL_RTMINEXPIRE       6       /* min value for expiration time */
 471 #define IPCTL_RTMAXCACHE        7       /* trigger level for dynamic expire */
 472 #define IPCTL_SOURCEROUTE       8       /* may perform source routes */
 473 #define IPCTL_DIRECTEDBROADCAST 9       /* may re-broadcast received packets */
 474 #define IPCTL_INTRQMAXLEN       10      /* max length of netisr queue */
 475 #define IPCTL_INTRQDROPS        11      /* number of netisr q drops */
 476 #define IPCTL_STATS             12      /* ipstat structure */
 477 #define IPCTL_ACCEPTSOURCEROUTE 13      /* may accept source routed packets */
 478 #define IPCTL_FASTFORWARDING    14      /* use fast IP forwarding code */
 479 #define IPCTL_KEEPFAITH         15
 480 #define IPCTL_GIF_TTL           16      /* default TTL for gif encap packet */
 481 #define IPCTL_MAXID             17
 482
 483 #define IPCTL_NAMES { \
 484         { 0, 0 }, \
 485         { "forwarding", CTLTYPE_INT }, \
 486         { "redirect", CTLTYPE_INT }, \
 487         { "ttl", CTLTYPE_INT }, \
 488         { "mtu", CTLTYPE_INT }, \
 489         { "rtexpire", CTLTYPE_INT }, \
 490         { "rtminexpire", CTLTYPE_INT }, \
 491         { "rtmaxcache", CTLTYPE_INT }, \
 492         { "sourceroute", CTLTYPE_INT }, \
 493         { "directed-broadcast", CTLTYPE_INT }, \
 494         { "intr-queue-maxlen", CTLTYPE_INT }, \
 495         { "intr-queue-drops", CTLTYPE_INT }, \
 496         { "stats", CTLTYPE_STRUCT }, \
 497         { "accept_sourceroute", CTLTYPE_INT }, \
 498         { "fastforwarding", CTLTYPE_INT }, \
 499         { "keepfaith", CTLTYPE_INT }, \
 500         { "gifttl", CTLTYPE_INT }, \
 501 }
 502
 503 /* INET6 stuff */
 504 #define __KAME_NETINET_IN_H_INCLUDED_
 505 #include <netinet6/in6.h>
 506 #undef __KAME_NETINET_IN_H_INCLUDED_
 507
 508 #ifdef KERNEL
 509 struct ifnet; struct mbuf;      /* forward declarations for Standard C */
 510
 511 int      in_broadcast __P((struct in_addr, struct ifnet *));
 512 int      in_canforward __P((struct in_addr));
 513 int      in_cksum __P((struct mbuf *, int));
 514 int      in_cksum_skip __P((struct mbuf *, u_short, u_short));
 515 u_short  in_addword __P((u_short, u_short));
 516 u_short  in_pseudo __P((u_int, u_int, u_int));
 517 int      in_localaddr __P((struct in_addr));
 518 char    *inet_ntoa __P((struct in_addr)); /* in libkern */
 519 u_long  in_netof __P((struct in_addr));
 520 #endif /* KERNEL */
 521
 522 #endif