bsd/netinet/in.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * Copyright (c) 1982, 1986, 1990, 1993
  32  *      The Regents of the University of California.  All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)in.h        8.3 (Berkeley) 1/3/94
  63  * $FreeBSD: src/sys/netinet/in.h,v 1.48.2.2 2001/04/21 14:53:06 ume Exp $
  64  */
  65
  66 #ifndef _NETINET_IN_H_
  67 #define _NETINET_IN_H_
  68 #include <sys/appleapiopts.h>
  69 #include <sys/_types.h>
  70
  71 #ifndef _IN_ADDR_T
  72 #define _IN_ADDR_T
  73 typedef __uint32_t      in_addr_t;      /* base type for internet address */
  74 #endif
  75
  76 #ifndef _IN_PORT_T
  77 #define _IN_PORT_T
  78 typedef __uint16_t      in_port_t;
  79 #endif
  80
  81 /*
  82  * POSIX 1003.1-2003
  83  * "Inclusion of the <netinet/in.h> header may also make visible all
  84  *  symbols from <inttypes.h> and <sys/socket.h>".
  85  */
  86 #include <sys/socket.h>
  87
  88 /*
  89  * The following two #includes insure htonl and family are defined
  90  */
  91 #include <machine/endian.h>
  92 #include <sys/_endian.h>
  93
  94 /*
  95  * Constants and structures defined by the internet system,
  96  * Per RFC 790, September 1981, and numerous additions.
  97  */
  98
  99 /*
 100  * Protocols (RFC 1700)
 101  */
 102 #define IPPROTO_IP              0               /* dummy for IP */
 103 #ifndef _POSIX_C_SOURCE
 104 #define IPPROTO_HOPOPTS 0               /* IP6 hop-by-hop options */
 105 #endif  /* !_POSIX_C_SOURCE */
 106 #define IPPROTO_ICMP            1               /* control message protocol */
 107 #ifndef _POSIX_C_SOURCE
 108 #define IPPROTO_IGMP            2               /* group mgmt protocol */
 109 #define IPPROTO_GGP             3               /* gateway^2 (deprecated) */
 110 #define IPPROTO_IPV4            4               /* IPv4 encapsulation */
 111 #define IPPROTO_IPIP            IPPROTO_IPV4    /* for compatibility */
 112 #endif  /* !_POSIX_C_SOURCE */
 113 #define IPPROTO_TCP             6               /* tcp */
 114 #ifndef _POSIX_C_SOURCE
 115 #define IPPROTO_ST              7               /* Stream protocol II */
 116 #define IPPROTO_EGP             8               /* exterior gateway protocol */
 117 #define IPPROTO_PIGP            9               /* private interior gateway */
 118 #define IPPROTO_RCCMON          10              /* BBN RCC Monitoring */
 119 #define IPPROTO_NVPII           11              /* network voice protocol*/
 120 #define IPPROTO_PUP             12              /* pup */
 121 #define IPPROTO_ARGUS           13              /* Argus */
 122 #define IPPROTO_EMCON           14              /* EMCON */
 123 #define IPPROTO_XNET            15              /* Cross Net Debugger */
 124 #define IPPROTO_CHAOS           16              /* Chaos*/
 125 #endif  /* !_POSIX_C_SOURCE */
 126 #define IPPROTO_UDP             17              /* user datagram protocol */
 127 #ifndef _POSIX_C_SOURCE
 128 #define IPPROTO_MUX             18              /* Multiplexing */
 129 #define IPPROTO_MEAS            19              /* DCN Measurement Subsystems */
 130 #define IPPROTO_HMP             20              /* Host Monitoring */
 131 #define IPPROTO_PRM             21              /* Packet Radio Measurement */
 132 #define IPPROTO_IDP             22              /* xns idp */
 133 #define IPPROTO_TRUNK1          23              /* Trunk-1 */
 134 #define IPPROTO_TRUNK2          24              /* Trunk-2 */
 135 #define IPPROTO_LEAF1           25              /* Leaf-1 */
 136 #define IPPROTO_LEAF2           26              /* Leaf-2 */
 137 #define IPPROTO_RDP             27              /* Reliable Data */
 138 #define IPPROTO_IRTP            28              /* Reliable Transaction */
 139 #define IPPROTO_TP              29              /* tp-4 w/ class negotiation */
 140 #define IPPROTO_BLT             30              /* Bulk Data Transfer */
 141 #define IPPROTO_NSP             31              /* Network Services */
 142 #define IPPROTO_INP             32              /* Merit Internodal */
 143 #define IPPROTO_SEP             33              /* Sequential Exchange */
 144 #define IPPROTO_3PC             34              /* Third Party Connect */
 145 #define IPPROTO_IDPR            35              /* InterDomain Policy Routing */
 146 #define IPPROTO_XTP             36              /* XTP */
 147 #define IPPROTO_DDP             37              /* Datagram Delivery */
 148 #define IPPROTO_CMTP            38              /* Control Message Transport */
 149 #define IPPROTO_TPXX            39              /* TP++ Transport */
 150 #define IPPROTO_IL              40              /* IL transport protocol */
 151 #endif  /* !_POSIX_C_SOURCE */
 152 #define         IPPROTO_IPV6            41              /* IP6 header */
 153 #ifndef _POSIX_C_SOURCE
 154 #define IPPROTO_SDRP            42              /* Source Demand Routing */
 155 #define         IPPROTO_ROUTING 43              /* IP6 routing header */
 156 #define         IPPROTO_FRAGMENT        44              /* IP6 fragmentation header */
 157 #define IPPROTO_IDRP            45              /* InterDomain Routing*/
 158 #define         IPPROTO_RSVP            46              /* resource reservation */
 159 #define IPPROTO_GRE             47              /* General Routing Encap. */
 160 #define IPPROTO_MHRP            48              /* Mobile Host Routing */
 161 #define IPPROTO_BHA             49              /* BHA */
 162 #define IPPROTO_ESP             50              /* IP6 Encap Sec. Payload */
 163 #define IPPROTO_AH              51              /* IP6 Auth Header */
 164 #define IPPROTO_INLSP           52              /* Integ. Net Layer Security */
 165 #define IPPROTO_SWIPE           53              /* IP with encryption */
 166 #define IPPROTO_NHRP            54              /* Next Hop Resolution */
 167 /* 55-57: Unassigned */
 168 #define         IPPROTO_ICMPV6  58              /* ICMP6 */
 169 #define         IPPROTO_NONE            59              /* IP6 no next header */
 170 #define         IPPROTO_DSTOPTS 60              /* IP6 destination option */
 171 #define IPPROTO_AHIP            61              /* any host internal protocol */
 172 #define IPPROTO_CFTP            62              /* CFTP */
 173 #define IPPROTO_HELLO           63              /* "hello" routing protocol */
 174 #define IPPROTO_SATEXPAK        64              /* SATNET/Backroom EXPAK */
 175 #define IPPROTO_KRYPTOLAN       65              /* Kryptolan */
 176 #define IPPROTO_RVD             66              /* Remote Virtual Disk */
 177 #define IPPROTO_IPPC            67              /* Pluribus Packet Core */
 178 #define IPPROTO_ADFS            68              /* Any distributed FS */
 179 #define IPPROTO_SATMON          69              /* Satnet Monitoring */
 180 #define IPPROTO_VISA            70              /* VISA Protocol */
 181 #define IPPROTO_IPCV            71              /* Packet Core Utility */
 182 #define IPPROTO_CPNX            72              /* Comp. Prot. Net. Executive */
 183 #define IPPROTO_CPHB            73              /* Comp. Prot. HeartBeat */
 184 #define IPPROTO_WSN             74              /* Wang Span Network */
 185 #define IPPROTO_PVP             75              /* Packet Video Protocol */
 186 #define IPPROTO_BRSATMON        76              /* BackRoom SATNET Monitoring */
 187 #define IPPROTO_ND              77              /* Sun net disk proto (temp.) */
 188 #define IPPROTO_WBMON           78              /* WIDEBAND Monitoring */
 189 #define IPPROTO_WBEXPAK         79              /* WIDEBAND EXPAK */
 190 #define IPPROTO_EON             80              /* ISO cnlp */
 191 #define IPPROTO_VMTP            81              /* VMTP */
 192 #define IPPROTO_SVMTP           82              /* Secure VMTP */
 193 #define IPPROTO_VINES           83              /* Banyon VINES */
 194 #define IPPROTO_TTP             84              /* TTP */
 195 #define IPPROTO_IGP             85              /* NSFNET-IGP */
 196 #define IPPROTO_DGP             86              /* dissimilar gateway prot. */
 197 #define IPPROTO_TCF             87              /* TCF */
 198 #define IPPROTO_IGRP            88              /* Cisco/GXS IGRP */
 199 #define IPPROTO_OSPFIGP         89              /* OSPFIGP */
 200 #define IPPROTO_SRPC            90              /* Strite RPC protocol */
 201 #define IPPROTO_LARP            91              /* Locus Address Resoloution */
 202 #define IPPROTO_MTP             92              /* Multicast Transport */
 203 #define IPPROTO_AX25            93              /* AX.25 Frames */
 204 #define IPPROTO_IPEIP           94              /* IP encapsulated in IP */
 205 #define IPPROTO_MICP            95              /* Mobile Int.ing control */
 206 #define IPPROTO_SCCSP           96              /* Semaphore Comm. security */
 207 #define IPPROTO_ETHERIP         97              /* Ethernet IP encapsulation */
 208 #define IPPROTO_ENCAP           98              /* encapsulation header */
 209 #define IPPROTO_APES            99              /* any private encr. scheme */
 210 #define IPPROTO_GMTP            100             /* GMTP*/
 211 #define IPPROTO_IPCOMP  108             /* payload compression (IPComp) */
 212 /* 101-254: Partly Unassigned */
 213 #define IPPROTO_PIM             103             /* Protocol Independent Mcast */
 214 #define IPPROTO_PGM             113             /* PGM */
 215 /* 255: Reserved */
 216 /* BSD Private, local use, namespace incursion */
 217 #define IPPROTO_DIVERT          254             /* divert pseudo-protocol */
 218 #endif  /* !_POSIX_C_SOURCE */
 219 #define IPPROTO_RAW             255             /* raw IP packet */
 220
 221 #ifndef _POSIX_C_SOURCE
 222 #define IPPROTO_MAX             256
 223
 224 /* last return value of *_input(), meaning "all job for this pkt is done".  */
 225 #define IPPROTO_DONE            257
 226 #endif /* _POSIX_C_SOURCE */
 227
 228 /*
 229  * Local port number conventions:
 230  *
 231  * When a user does a bind(2) or connect(2) with a port number of zero,
 232  * a non-conflicting local port address is chosen.
 233  * The default range is IPPORT_RESERVED through
 234  * IPPORT_USERRESERVED, although that is settable by sysctl.
 235  *
 236  * A user may set the IPPROTO_IP option IP_PORTRANGE to change this
 237  * default assignment range.
 238  *
 239  * The value IP_PORTRANGE_DEFAULT causes the default behavior.
 240  *
 241  * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers
 242  * into the "high" range.  These are reserved for client outbound connections
 243  * which do not want to be filtered by any firewalls.
 244  *
 245  * The value IP_PORTRANGE_LOW changes the range to the "low" are
 246  * that is (by convention) restricted to privileged processes.  This
 247  * convention is based on "vouchsafe" principles only.  It is only secure
 248  * if you trust the remote host to restrict these ports.
 249  *
 250  * The default range of ports and the high range can be changed by
 251  * sysctl(3).  (net.inet.ip.port{hi,low}{first,last}_auto)
 252  *
 253  * Changing those values has bad security implications if you are
 254  * using a a stateless firewall that is allowing packets outside of that
 255  * range in order to allow transparent outgoing connections.
 256  *
 257  * Such a firewall configuration will generally depend on the use of these
 258  * default values.  If you change them, you may find your Security
 259  * Administrator looking for you with a heavy object.
 260  *
 261  * For a slightly more orthodox text view on this:
 262  *
 263  *            ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers
 264  *
 265  *    port numbers are divided into three ranges:
 266  *
 267  *                0 -  1023 Well Known Ports
 268  *             1024 - 49151 Registered Ports
 269  *            49152 - 65535 Dynamic and/or Private Ports
 270  *
 271  */
 272
 273 #define __DARWIN_IPPORT_RESERVED        1024
 274
 275 #ifndef _POSIX_C_SOURCE
 276 /*
 277  * Ports < IPPORT_RESERVED are reserved for
 278  * privileged processes (e.g. root).         (IP_PORTRANGE_LOW)
 279  * Ports > IPPORT_USERRESERVED are reserved
 280  * for servers, not necessarily privileged.  (IP_PORTRANGE_DEFAULT)
 281  */
 282 #ifndef IPPORT_RESERVED
 283 #define IPPORT_RESERVED         __DARWIN_IPPORT_RESERVED
 284 #endif
 285 #define IPPORT_USERRESERVED     5000
 286
 287 /*
 288  * Default local port range to use by setting IP_PORTRANGE_HIGH
 289  */
 290 #define IPPORT_HIFIRSTAUTO      49152
 291 #define IPPORT_HILASTAUTO       65535
 292
 293 /*
 294  * Scanning for a free reserved port return a value below IPPORT_RESERVED,
 295  * but higher than IPPORT_RESERVEDSTART.  Traditionally the start value was
 296  * 512, but that conflicts with some well-known-services that firewalls may
 297  * have a fit if we use.
 298  */
 299 #define IPPORT_RESERVEDSTART    600
 300 #endif  /* !_POSIX_C_SOURCE */
 301
 302 /*
 303  * Internet address (a structure for historical reasons)
 304  */
 305 struct in_addr {
 306         in_addr_t s_addr;
 307 };
 308
 309 /*
 310  * Definitions of bits in internet address integers.
 311  * On subnets, the decomposition of addresses to host and net parts
 312  * is done according to subnet mask, not the masks here.
 313  */
 314 #define INADDR_ANY              (u_int32_t)0x00000000
 315 #define INADDR_BROADCAST        (u_int32_t)0xffffffff   /* must be masked */
 316
 317 #ifndef _POSIX_C_SOURCE
 318 #define IN_CLASSA(i)            (((u_int32_t)(i) & 0x80000000) == 0)
 319 #define IN_CLASSA_NET           0xff000000
 320 #define IN_CLASSA_NSHIFT        24
 321 #define IN_CLASSA_HOST          0x00ffffff
 322 #define IN_CLASSA_MAX           128
 323
 324 #define IN_CLASSB(i)            (((u_int32_t)(i) & 0xc0000000) == 0x80000000)
 325 #define IN_CLASSB_NET           0xffff0000
 326 #define IN_CLASSB_NSHIFT        16
 327 #define IN_CLASSB_HOST          0x0000ffff
 328 #define IN_CLASSB_MAX           65536
 329
 330 #define IN_CLASSC(i)            (((u_int32_t)(i) & 0xe0000000) == 0xc0000000)
 331 #define IN_CLASSC_NET           0xffffff00
 332 #define IN_CLASSC_NSHIFT        8
 333 #define IN_CLASSC_HOST          0x000000ff
 334
 335 #define IN_CLASSD(i)            (((u_int32_t)(i) & 0xf0000000) == 0xe0000000)
 336 #define IN_CLASSD_NET           0xf0000000      /* These ones aren't really */
 337 #define IN_CLASSD_NSHIFT        28              /* net and host fields, but */
 338 #define IN_CLASSD_HOST          0x0fffffff      /* routing needn't know.    */
 339 #define IN_MULTICAST(i)         IN_CLASSD(i)
 340
 341 #define IN_EXPERIMENTAL(i)      (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
 342 #define IN_BADCLASS(i)          (((u_int32_t)(i) & 0xf0000000) == 0xf0000000)
 343
 344 #define INADDR_LOOPBACK         (u_int32_t)0x7f000001
 345 #ifndef KERNEL
 346 #define INADDR_NONE             0xffffffff              /* -1 return */
 347 #endif
 348
 349 #define INADDR_UNSPEC_GROUP     (u_int32_t)0xe0000000   /* 224.0.0.0 */
 350 #define INADDR_ALLHOSTS_GROUP   (u_int32_t)0xe0000001   /* 224.0.0.1 */
 351 #define INADDR_ALLRTRS_GROUP    (u_int32_t)0xe0000002   /* 224.0.0.2 */
 352 #define INADDR_MAX_LOCAL_GROUP  (u_int32_t)0xe00000ff   /* 224.0.0.255 */
 353
 354 #ifdef __APPLE__
 355 #define IN_LINKLOCALNETNUM      (u_int32_t)0xA9FE0000 /* 169.254.0.0 */
 356 #define IN_LINKLOCAL(i)         (((u_int32_t)(i) & IN_CLASSB_NET) == IN_LINKLOCALNETNUM)
 357 #endif
 358
 359 #define IN_LOOPBACKNET          127                     /* official! */
 360 #endif  /* !_POSIX_C_SOURCE */
 361
 362 /*
 363  * Socket address, internet style.
 364  */
 365 struct sockaddr_in {
 366         __uint8_t       sin_len;
 367         sa_family_t     sin_family;
 368         in_port_t       sin_port;
 369         struct  in_addr sin_addr;
 370         char            sin_zero[8];            /* XXX bwg2001-004 */
 371 };
 372
 373 #define INET_ADDRSTRLEN                 16
 374
 375 #ifndef _POSIX_C_SOURCE
 376 /*
 377  * Structure used to describe IP options.
 378  * Used to store options internally, to pass them to a process,
 379  * or to restore options retrieved earlier.
 380  * The ip_dst is used for the first-hop gateway when using a source route
 381  * (this gets put into the header proper).
 382  */
 383 struct ip_opts {
 384         struct  in_addr ip_dst;         /* first hop, 0 w/o src rt */
 385         char    ip_opts[40];            /* actually variable in size */
 386 };
 387
 388 /*
 389  * Options for use with [gs]etsockopt at the IP level.
 390  * First word of comment is data type; bool is stored in int.
 391  */
 392 #define IP_OPTIONS              1    /* buf/ip_opts; set/get IP options */
 393 #define IP_HDRINCL              2    /* int; header is included with data */
 394 #define IP_TOS                  3    /* int; IP type of service and preced. */
 395 #define IP_TTL                  4    /* int; IP time to live */
 396 #define IP_RECVOPTS             5    /* bool; receive all IP opts w/dgram */
 397 #define IP_RECVRETOPTS          6    /* bool; receive IP opts for response */
 398 #define IP_RECVDSTADDR          7    /* bool; receive IP dst addr w/dgram */
 399 #define IP_RETOPTS              8    /* ip_opts; set/get IP options */
 400 #define IP_MULTICAST_IF         9    /* u_char; set/get IP multicast i/f  */
 401 #define IP_MULTICAST_TTL        10   /* u_char; set/get IP multicast ttl */
 402 #define IP_MULTICAST_LOOP       11   /* u_char; set/get IP multicast loopback */
 403 #define IP_ADD_MEMBERSHIP       12   /* ip_mreq; add an IP group membership */
 404 #define IP_DROP_MEMBERSHIP      13   /* ip_mreq; drop an IP group membership */
 405 #define IP_MULTICAST_VIF        14   /* set/get IP mcast virt. iface */
 406 #define IP_RSVP_ON              15   /* enable RSVP in kernel */
 407 #define IP_RSVP_OFF             16   /* disable RSVP in kernel */
 408 #define IP_RSVP_VIF_ON          17   /* set RSVP per-vif socket */
 409 #define IP_RSVP_VIF_OFF         18   /* unset RSVP per-vif socket */
 410 #define IP_PORTRANGE            19   /* int; range to choose for unspec port */
 411 #define IP_RECVIF               20   /* bool; receive reception if w/dgram */
 412 /* for IPSEC */
 413 #define IP_IPSEC_POLICY         21   /* int; set/get security policy */
 414 #define IP_FAITH                22   /* bool; accept FAITH'ed connections */
 415 #ifdef __APPLE__
 416 #define IP_STRIPHDR             23   /* bool: drop receive of raw IP header */
 417 #endif
 418 #define IP_RECVTTL                      24      /* bool; receive reception TTL w/dgram */
 419
 420
 421 #define IP_FW_ADD               40   /* add a firewall rule to chain */
 422 #define IP_FW_DEL               41   /* delete a firewall rule from chain */
 423 #define IP_FW_FLUSH             42   /* flush firewall rule chain */
 424 #define IP_FW_ZERO              43   /* clear single/all firewall counter(s) */
 425 #define IP_FW_GET               44   /* get entire firewall rule chain */
 426 #define IP_FW_RESETLOG          45   /* reset logging counters */
 427
 428 /* These older firewall socket option codes are maintained for backward compatibility. */
 429 #define IP_OLD_FW_ADD           50   /* add a firewall rule to chain */
 430 #define IP_OLD_FW_DEL           51   /* delete a firewall rule from chain */
 431 #define IP_OLD_FW_FLUSH         52   /* flush firewall rule chain */
 432 #define IP_OLD_FW_ZERO          53   /* clear single/all firewall counter(s) */
 433 #define IP_OLD_FW_GET           54   /* get entire firewall rule chain */
 434 #define IP_NAT__XXX                     55   /* set/get NAT opts XXX Deprecated, do not use */
 435 #define IP_OLD_FW_RESETLOG      56   /* reset logging counters */
 436
 437 #define IP_DUMMYNET_CONFIGURE   60   /* add/configure a dummynet pipe */
 438 #define IP_DUMMYNET_DEL         61   /* delete a dummynet pipe from chain */
 439 #define IP_DUMMYNET_FLUSH       62   /* flush dummynet */
 440 #define IP_DUMMYNET_GET         64   /* get entire dummynet pipes */
 441
 442 /*
 443  * Defaults and limits for options
 444  */
 445 #define IP_DEFAULT_MULTICAST_TTL  1     /* normally limit m'casts to 1 hop  */
 446 #define IP_DEFAULT_MULTICAST_LOOP 1     /* normally hear sends if a member  */
 447 #define IP_MAX_MEMBERSHIPS      20      /* per socket */
 448
 449 /*
 450  * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
 451  */
 452 struct ip_mreq {
 453         struct  in_addr imr_multiaddr;  /* IP multicast address of group */
 454         struct  in_addr imr_interface;  /* local IP address of interface */
 455 };
 456
 457 /*
 458  * Argument for IP_PORTRANGE:
 459  * - which range to search when port is unspecified at bind() or connect()
 460  */
 461 #define IP_PORTRANGE_DEFAULT    0       /* default range */
 462 #define IP_PORTRANGE_HIGH       1       /* "high" - request firewall bypass */
 463 #define IP_PORTRANGE_LOW        2       /* "low" - vouchsafe security */
 464
 465
 466 /*
 467  * Definitions for inet sysctl operations.
 468  *
 469  * Third level is protocol number.
 470  * Fourth level is desired variable within that protocol.
 471  */
 472 #define IPPROTO_MAXID   (IPPROTO_AH + 1)        /* don't list to IPPROTO_MAX */
 473
 474 #ifdef KERNEL_PRIVATE
 475
 476 #define CTL_IPPROTO_NAMES { \
 477         { "ip", CTLTYPE_NODE }, \
 478         { "icmp", CTLTYPE_NODE }, \
 479         { "igmp", CTLTYPE_NODE }, \
 480         { "ggp", CTLTYPE_NODE }, \
 481         { 0, 0 }, \
 482         { 0, 0 }, \
 483         { "tcp", CTLTYPE_NODE }, \
 484         { 0, 0 }, \
 485         { "egp", CTLTYPE_NODE }, \
 486         { 0, 0 }, \
 487         { 0, 0 }, \
 488         { 0, 0 }, \
 489         { "pup", CTLTYPE_NODE }, \
 490         { 0, 0 }, \
 491         { 0, 0 }, \
 492         { 0, 0 }, \
 493         { 0, 0 }, \
 494         { "udp", CTLTYPE_NODE }, \
 495         { 0, 0 }, \
 496         { 0, 0 }, \
 497         { 0, 0 }, \
 498         { 0, 0 }, \
 499         { "idp", CTLTYPE_NODE }, \
 500         { 0, 0 }, \
 501         { 0, 0 }, \
 502         { 0, 0 }, \
 503         { 0, 0 }, \
 504         { 0, 0 }, \
 505         { 0, 0 }, \
 506         { 0, 0 }, \
 507         { 0, 0 }, \
 508         { 0, 0 }, \
 509         { 0, 0 }, \
 510         { 0, 0 }, \
 511         { 0, 0 }, \
 512         { 0, 0 }, \
 513         { 0, 0 }, \
 514         { 0, 0 }, \
 515         { 0, 0 }, \
 516         { 0, 0 }, \
 517         { 0, 0 }, \
 518         { 0, 0 }, \
 519         { 0, 0 }, \
 520         { 0, 0 }, \
 521         { 0, 0 }, \
 522         { 0, 0 }, \
 523         { 0, 0 }, \
 524         { 0, 0 }, \
 525         { 0, 0 }, \
 526         { 0, 0 }, \
 527         { 0, 0 }, \
 528         { "ipsec", CTLTYPE_NODE }, \
 529 }
 530
 531 #endif /* KERNEL_PRIVATE */
 532
 533 /*
 534  * Names for IP sysctl objects
 535  */
 536 #define IPCTL_FORWARDING        1       /* act as router */
 537 #define IPCTL_SENDREDIRECTS     2       /* may send redirects when forwarding */
 538 #define IPCTL_DEFTTL            3       /* default TTL */
 539 #ifdef notyet
 540 #define IPCTL_DEFMTU            4       /* default MTU */
 541 #endif
 542 #define IPCTL_RTEXPIRE          5       /* cloned route expiration time */
 543 #define IPCTL_RTMINEXPIRE       6       /* min value for expiration time */
 544 #define IPCTL_RTMAXCACHE        7       /* trigger level for dynamic expire */
 545 #define IPCTL_SOURCEROUTE       8       /* may perform source routes */
 546 #define IPCTL_DIRECTEDBROADCAST 9       /* may re-broadcast received packets */
 547 #define IPCTL_INTRQMAXLEN       10      /* max length of netisr queue */
 548 #define IPCTL_INTRQDROPS        11      /* number of netisr q drops */
 549 #define IPCTL_STATS             12      /* ipstat structure */
 550 #define IPCTL_ACCEPTSOURCEROUTE 13      /* may accept source routed packets */
 551 #define IPCTL_FASTFORWARDING    14      /* use fast IP forwarding code */
 552 #define IPCTL_KEEPFAITH         15      /* FAITH IPv4->IPv6 translater ctl */
 553 #define IPCTL_GIF_TTL           16      /* default TTL for gif encap packet */
 554 #define IPCTL_MAXID             17
 555
 556 #ifdef KERNEL_PRIVATE
 557
 558 #define IPCTL_NAMES { \
 559         { 0, 0 }, \
 560         { "forwarding", CTLTYPE_INT }, \
 561         { "redirect", CTLTYPE_INT }, \
 562         { "ttl", CTLTYPE_INT }, \
 563         { "mtu", CTLTYPE_INT }, \
 564         { "rtexpire", CTLTYPE_INT }, \
 565         { "rtminexpire", CTLTYPE_INT }, \
 566         { "rtmaxcache", CTLTYPE_INT }, \
 567         { "sourceroute", CTLTYPE_INT }, \
 568         { "directed-broadcast", CTLTYPE_INT }, \
 569         { "intr-queue-maxlen", CTLTYPE_INT }, \
 570         { "intr-queue-drops", CTLTYPE_INT }, \
 571         { "stats", CTLTYPE_STRUCT }, \
 572         { "accept_sourceroute", CTLTYPE_INT }, \
 573         { "fastforwarding", CTLTYPE_INT }, \
 574         { "keepfaith", CTLTYPE_INT }, \
 575         { "gifttl", CTLTYPE_INT }, \
 576 }
 577 #endif /* KERNEL_PRIVATE */
 578
 579 #endif  /* !_POSIX_C_SOURCE */
 580
 581
 582 /* INET6 stuff */
 583 #define __KAME_NETINET_IN_H_INCLUDED_
 584 #include <netinet6/in6.h>
 585 #undef __KAME_NETINET_IN_H_INCLUDED_
 586
 587 #ifdef KERNEL
 588 #ifdef KERNEL_PRIVATE
 589 struct ifnet; struct mbuf;      /* forward declarations for Standard C */
 590
 591 int      in_broadcast(struct in_addr, struct ifnet *);
 592 int      in_canforward(struct in_addr);
 593 int      in_cksum(struct mbuf *, int);
 594 int      in_cksum_skip(struct mbuf *, u_short, u_short);
 595 u_short  in_addword(u_short, u_short);
 596 u_short  in_pseudo(u_int, u_int, u_int);
 597 int      in_localaddr(struct in_addr);
 598 u_long  in_netof(struct in_addr);
 599 #endif /* KERNEL_PRIVATE */
 600 #define MAX_IPv4_STR_LEN        16
 601 #define MAX_IPv6_STR_LEN        64
 602
 603 const char      *inet_ntop(int, const void *, char *, size_t); /* in libkern */
 604 #endif /* KERNEL */
 605
 606 #endif _NETINET_IN_H_