1/* 2 * Copyright (c) 2000-2013 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_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 License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1982, 1986, 1990, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)in.h 8.3 (Berkeley) 1/3/94 61 * $FreeBSD: src/sys/netinet/in.h,v 1.48.2.2 2001/04/21 14:53:06 ume Exp $ 62 */ 63 64#ifndef _NETINET_IN_H_ 65#define _NETINET_IN_H_ 66#include <sys/appleapiopts.h> 67#include <sys/_types.h> 68#include <stdint.h> /* uint(8|16|32)_t */ 69 70#ifndef KERNEL 71#include <Availability.h> 72#endif 73 74#include <sys/_types/_in_addr_t.h> 75 76#include <sys/_types/_in_port_t.h> 77 78/* 79 * POSIX 1003.1-2003 80 * "Inclusion of the <netinet/in.h> header may also make visible all 81 * symbols from <inttypes.h> and <sys/socket.h>". 82 */ 83#include <sys/socket.h> 84 85/* 86 * The following two #includes insure htonl and family are defined 87 */ 88#include <machine/endian.h> 89#include <sys/_endian.h> 90 91/* 92 * Constants and structures defined by the internet system, 93 * Per RFC 790, September 1981, and numerous additions. 94 */ 95 96/* 97 * Protocols (RFC 1700) 98 */ 99#define IPPROTO_IP 0 /* dummy for IP */ 100#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 101#define IPPROTO_HOPOPTS 0 /* IP6 hop-by-hop options */ 102#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 103#define IPPROTO_ICMP 1 /* control message protocol */ 104#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 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#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 110#define IPPROTO_TCP 6 /* tcp */ 111#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 112#define IPPROTO_ST 7 /* Stream protocol II */ 113#define IPPROTO_EGP 8 /* exterior gateway protocol */ 114#define IPPROTO_PIGP 9 /* private interior gateway */ 115#define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */ 116#define IPPROTO_NVPII 11 /* network voice protocol*/ 117#define IPPROTO_PUP 12 /* pup */ 118#define IPPROTO_ARGUS 13 /* Argus */ 119#define IPPROTO_EMCON 14 /* EMCON */ 120#define IPPROTO_XNET 15 /* Cross Net Debugger */ 121#define IPPROTO_CHAOS 16 /* Chaos*/ 122#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 123#define IPPROTO_UDP 17 /* user datagram protocol */ 124#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 125#define IPPROTO_MUX 18 /* Multiplexing */ 126#define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */ 127#define IPPROTO_HMP 20 /* Host Monitoring */ 128#define IPPROTO_PRM 21 /* Packet Radio Measurement */ 129#define IPPROTO_IDP 22 /* xns idp */ 130#define IPPROTO_TRUNK1 23 /* Trunk-1 */ 131#define IPPROTO_TRUNK2 24 /* Trunk-2 */ 132#define IPPROTO_LEAF1 25 /* Leaf-1 */ 133#define IPPROTO_LEAF2 26 /* Leaf-2 */ 134#define IPPROTO_RDP 27 /* Reliable Data */ 135#define IPPROTO_IRTP 28 /* Reliable Transaction */ 136#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 137#define IPPROTO_BLT 30 /* Bulk Data Transfer */ 138#define IPPROTO_NSP 31 /* Network Services */ 139#define IPPROTO_INP 32 /* Merit Internodal */ 140#define IPPROTO_SEP 33 /* Sequential Exchange */ 141#define IPPROTO_3PC 34 /* Third Party Connect */ 142#define IPPROTO_IDPR 35 /* InterDomain Policy Routing */ 143#define IPPROTO_XTP 36 /* XTP */ 144#define IPPROTO_DDP 37 /* Datagram Delivery */ 145#define IPPROTO_CMTP 38 /* Control Message Transport */ 146#define IPPROTO_TPXX 39 /* TP++ Transport */ 147#define IPPROTO_IL 40 /* IL transport protocol */ 148#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 149#define IPPROTO_IPV6 41 /* IP6 header */ 150#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 151#define IPPROTO_SDRP 42 /* Source Demand Routing */ 152#define IPPROTO_ROUTING 43 /* IP6 routing header */ 153#define IPPROTO_FRAGMENT 44 /* IP6 fragmentation header */ 154#define IPPROTO_IDRP 45 /* InterDomain Routing*/ 155#define IPPROTO_RSVP 46 /* resource reservation */ 156#define IPPROTO_GRE 47 /* General Routing Encap. */ 157#define IPPROTO_MHRP 48 /* Mobile Host Routing */ 158#define IPPROTO_BHA 49 /* BHA */ 159#define IPPROTO_ESP 50 /* IP6 Encap Sec. Payload */ 160#define IPPROTO_AH 51 /* IP6 Auth Header */ 161#define IPPROTO_INLSP 52 /* Integ. Net Layer Security */ 162#define IPPROTO_SWIPE 53 /* IP with encryption */ 163#define IPPROTO_NHRP 54 /* Next Hop Resolution */ 164/* 55-57: Unassigned */ 165#define IPPROTO_ICMPV6 58 /* ICMP6 */ 166#define IPPROTO_NONE 59 /* IP6 no next header */ 167#define IPPROTO_DSTOPTS 60 /* IP6 destination option */ 168#define IPPROTO_AHIP 61 /* any host internal protocol */ 169#define IPPROTO_CFTP 62 /* CFTP */ 170#define IPPROTO_HELLO 63 /* "hello" routing protocol */ 171#define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */ 172#define IPPROTO_KRYPTOLAN 65 /* Kryptolan */ 173#define IPPROTO_RVD 66 /* Remote Virtual Disk */ 174#define IPPROTO_IPPC 67 /* Pluribus Packet Core */ 175#define IPPROTO_ADFS 68 /* Any distributed FS */ 176#define IPPROTO_SATMON 69 /* Satnet Monitoring */ 177#define IPPROTO_VISA 70 /* VISA Protocol */ 178#define IPPROTO_IPCV 71 /* Packet Core Utility */ 179#define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */ 180#define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */ 181#define IPPROTO_WSN 74 /* Wang Span Network */ 182#define IPPROTO_PVP 75 /* Packet Video Protocol */ 183#define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */ 184#define IPPROTO_ND 77 /* Sun net disk proto (temp.) */ 185#define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */ 186#define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */ 187#define IPPROTO_EON 80 /* ISO cnlp */ 188#define IPPROTO_VMTP 81 /* VMTP */ 189#define IPPROTO_SVMTP 82 /* Secure VMTP */ 190#define IPPROTO_VINES 83 /* Banyon VINES */ 191#define IPPROTO_TTP 84 /* TTP */ 192#define IPPROTO_IGP 85 /* NSFNET-IGP */ 193#define IPPROTO_DGP 86 /* dissimilar gateway prot. */ 194#define IPPROTO_TCF 87 /* TCF */ 195#define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */ 196#define IPPROTO_OSPFIGP 89 /* OSPFIGP */ 197#define IPPROTO_SRPC 90 /* Strite RPC protocol */ 198#define IPPROTO_LARP 91 /* Locus Address Resoloution */ 199#define IPPROTO_MTP 92 /* Multicast Transport */ 200#define IPPROTO_AX25 93 /* AX.25 Frames */ 201#define IPPROTO_IPEIP 94 /* IP encapsulated in IP */ 202#define IPPROTO_MICP 95 /* Mobile Int.ing control */ 203#define IPPROTO_SCCSP 96 /* Semaphore Comm. security */ 204#define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */ 205#define IPPROTO_ENCAP 98 /* encapsulation header */ 206#define IPPROTO_APES 99 /* any private encr. scheme */ 207#define IPPROTO_GMTP 100 /* GMTP*/ 208/* 101-254: Partly Unassigned */ 209#define IPPROTO_PIM 103 /* Protocol Independent Mcast */ 210#define IPPROTO_IPCOMP 108 /* payload compression (IPComp) */ 211#define IPPROTO_PGM 113 /* PGM */ 212#define IPPROTO_SCTP 132 /* SCTP */ 213/* 255: Reserved */ 214/* BSD Private, local use, namespace incursion */ 215#define IPPROTO_DIVERT 254 /* divert pseudo-protocol */ 216#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 217#define IPPROTO_RAW 255 /* raw IP packet */ 218 219#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 220#define IPPROTO_MAX 256 221 222/* last return value of *_input(), meaning "all job for this pkt is done". */ 223#define IPPROTO_DONE 257 224#endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 225 226/* 227 * Local port number conventions: 228 * 229 * When a user does a bind(2) or connect(2) with a port number of zero, 230 * a non-conflicting local port address is chosen. 231 * The default range is IPPORT_RESERVED through 232 * IPPORT_USERRESERVED, although that is settable by sysctl. 233 * 234 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 235 * default assignment range. 236 * 237 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 238 * 239 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers 240 * into the "high" range. These are reserved for client outbound connections 241 * which do not want to be filtered by any firewalls. 242 * 243 * The value IP_PORTRANGE_LOW changes the range to the "low" are 244 * that is (by convention) restricted to privileged processes. This 245 * convention is based on "vouchsafe" principles only. It is only secure 246 * if you trust the remote host to restrict these ports. 247 * 248 * The default range of ports and the high range can be changed by 249 * sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto) 250 * 251 * Changing those values has bad security implications if you are 252 * using a a stateless firewall that is allowing packets outside of that 253 * range in order to allow transparent outgoing connections. 254 * 255 * Such a firewall configuration will generally depend on the use of these 256 * default values. If you change them, you may find your Security 257 * Administrator looking for you with a heavy object. 258 * 259 * For a slightly more orthodox text view on this: 260 * 261 * ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers 262 * 263 * port numbers are divided into three ranges: 264 * 265 * 0 - 1023 Well Known Ports 266 * 1024 - 49151 Registered Ports 267 * 49152 - 65535 Dynamic and/or Private Ports 268 * 269 */ 270 271#define __DARWIN_IPPORT_RESERVED 1024 272 273#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 274/* 275 * Ports < IPPORT_RESERVED are reserved for 276 * privileged processes (e.g. root). (IP_PORTRANGE_LOW) 277 * Ports > IPPORT_USERRESERVED are reserved 278 * for servers, not necessarily privileged. (IP_PORTRANGE_DEFAULT) 279 */ 280#ifndef IPPORT_RESERVED 281#define IPPORT_RESERVED __DARWIN_IPPORT_RESERVED 282#endif 283#define IPPORT_USERRESERVED 5000 284 285/* 286 * Default local port range to use by setting IP_PORTRANGE_HIGH 287 */ 288#define IPPORT_HIFIRSTAUTO 49152 289#define IPPORT_HILASTAUTO 65535 290 291/* 292 * Scanning for a free reserved port return a value below IPPORT_RESERVED, 293 * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was 294 * 512, but that conflicts with some well-known-services that firewalls may 295 * have a fit if we use. 296 */ 297#define IPPORT_RESERVEDSTART 600 298#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 299 300/* 301 * Internet address (a structure for historical reasons) 302 */ 303struct in_addr { 304 in_addr_t s_addr; 305}; 306 307/* 308 * Definitions of bits in internet address integers. 309 * On subnets, the decomposition of addresses to host and net parts 310 * is done according to subnet mask, not the masks here. 311 */ 312#define INADDR_ANY (u_int32_t)0x00000000 313#define INADDR_BROADCAST (u_int32_t)0xffffffff /* must be masked */ 314 315#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 316#define IN_CLASSA(i) (((u_int32_t)(i) & 0x80000000) == 0) 317#define IN_CLASSA_NET 0xff000000 318#define IN_CLASSA_NSHIFT 24 319#define IN_CLASSA_HOST 0x00ffffff 320#define IN_CLASSA_MAX 128 321 322#define IN_CLASSB(i) (((u_int32_t)(i) & 0xc0000000) == 0x80000000) 323#define IN_CLASSB_NET 0xffff0000 324#define IN_CLASSB_NSHIFT 16 325#define IN_CLASSB_HOST 0x0000ffff 326#define IN_CLASSB_MAX 65536 327 328#define IN_CLASSC(i) (((u_int32_t)(i) & 0xe0000000) == 0xc0000000) 329#define IN_CLASSC_NET 0xffffff00 330#define IN_CLASSC_NSHIFT 8 331#define IN_CLASSC_HOST 0x000000ff 332 333#define IN_CLASSD(i) (((u_int32_t)(i) & 0xf0000000) == 0xe0000000) 334#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ 335#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ 336#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ 337#define IN_MULTICAST(i) IN_CLASSD(i) 338 339#define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 340#define IN_BADCLASS(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 341 342#define INADDR_LOOPBACK (u_int32_t)0x7f000001 343 344#ifndef KERNEL 345#define INADDR_NONE 0xffffffff /* -1 return */ 346#endif 347 348#define INADDR_UNSPEC_GROUP (u_int32_t)0xe0000000 /* 224.0.0.0 */ 349#define INADDR_ALLHOSTS_GROUP (u_int32_t)0xe0000001 /* 224.0.0.1 */ 350#define INADDR_ALLRTRS_GROUP (u_int32_t)0xe0000002 /* 224.0.0.2 */ 351#define INADDR_ALLRPTS_GROUP (u_int32_t)0xe0000016 /* 224.0.0.22, IGMPv3 */ 352#define INADDR_CARP_GROUP (u_int32_t)0xe0000012 /* 224.0.0.18 */ 353#define INADDR_PFSYNC_GROUP (u_int32_t)0xe00000f0 /* 224.0.0.240 */ 354#define INADDR_ALLMDNS_GROUP (u_int32_t)0xe00000fb /* 224.0.0.251 */ 355#define INADDR_MAX_LOCAL_GROUP (u_int32_t)0xe00000ff /* 224.0.0.255 */ 356 357#ifdef __APPLE__ 358#define IN_LINKLOCALNETNUM (u_int32_t)0xA9FE0000 /* 169.254.0.0 */ 359#define IN_LINKLOCAL(i) (((u_int32_t)(i) & IN_CLASSB_NET) == IN_LINKLOCALNETNUM) 360#define IN_LOOPBACK(i) (((u_int32_t)(i) & 0xff000000) == 0x7f000000) 361#define IN_ZERONET(i) (((u_int32_t)(i) & 0xff000000) == 0) 362 363#define IN_PRIVATE(i) ((((u_int32_t)(i) & 0xff000000) == 0x0a000000) || \ 364 (((u_int32_t)(i) & 0xfff00000) == 0xac100000) || \ 365 (((u_int32_t)(i) & 0xffff0000) == 0xc0a80000)) 366 367#define IN_LOCAL_GROUP(i) (((u_int32_t)(i) & 0xffffff00) == 0xe0000000) 368 369#define IN_ANY_LOCAL(i) (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i)) 370#endif 371 372#define IN_LOOPBACKNET 127 /* official! */ 373#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 374 375/* 376 * Socket address, internet style. 377 */ 378struct sockaddr_in { 379 __uint8_t sin_len; 380 sa_family_t sin_family; 381 in_port_t sin_port; 382 struct in_addr sin_addr; 383 char sin_zero[8]; 384}; 385 386#ifdef PRIVATE 387/* 388 * sockaddr_in with scope ID field; this is used internally to keep 389 * track of scoped route entries in the routing table. The fact that 390 * such a value is embedded in the structure is an artifact of the 391 * current implementation which could change in future. 392 */ 393struct sockaddr_inifscope { 394 __uint8_t sin_len; 395 sa_family_t sin_family; 396 in_port_t sin_port; 397 struct in_addr sin_addr; 398 /* 399 * To avoid possible conflict with an overlaid sockaddr_inarp 400 * having sin_other set to SIN_PROXY, we use the first 4-bytes 401 * of sin_zero since sin_srcaddr is one of the unused fields 402 * in sockaddr_inarp. 403 */ 404 union { 405 char sin_zero[8]; 406 struct { 407 __uint32_t ifscope; 408 } _in_index; 409 } un; 410#define sin_scope_id un._in_index.ifscope 411}; 412 413#endif /* PRIVATE */ 414 415#define INET_ADDRSTRLEN 16 416 417#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 418/* 419 * Structure used to describe IP options. 420 * Used to store options internally, to pass them to a process, 421 * or to restore options retrieved earlier. 422 * The ip_dst is used for the first-hop gateway when using a source route 423 * (this gets put into the header proper). 424 */ 425struct ip_opts { 426 struct in_addr ip_dst; /* first hop, 0 w/o src rt */ 427 char ip_opts[40]; /* actually variable in size */ 428}; 429 430/* 431 * Options for use with [gs]etsockopt at the IP level. 432 * First word of comment is data type; bool is stored in int. 433 */ 434#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 435#define IP_HDRINCL 2 /* int; header is included with data */ 436#define IP_TOS 3 /* int; IP type of service and preced. */ 437#define IP_TTL 4 /* int; IP time to live */ 438#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 439#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 440#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 441#define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 442#define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */ 443#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 444#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 445#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 446#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 447#define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ 448#define IP_RSVP_ON 15 /* enable RSVP in kernel */ 449#define IP_RSVP_OFF 16 /* disable RSVP in kernel */ 450#define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ 451#define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ 452#define IP_PORTRANGE 19 /* int; range to choose for unspec port */ 453#define IP_RECVIF 20 /* bool; receive reception if w/dgram */ 454/* for IPSEC */ 455#define IP_IPSEC_POLICY 21 /* int; set/get security policy */ 456#define IP_FAITH 22 /* deprecated */ 457#ifdef __APPLE__ 458#define IP_STRIPHDR 23 /* bool: drop receive of raw IP header */ 459#endif 460#define IP_RECVTTL 24 /* bool; receive reception TTL w/dgram */ 461#define IP_BOUND_IF 25 /* int; set/get bound interface */ 462#define IP_PKTINFO 26 /* get pktinfo on recv socket, set src on sent dgram */ 463#define IP_RECVPKTINFO IP_PKTINFO /* receive pktinfo w/dgram */ 464 465 466#define IP_FW_ADD 40 /* add a firewall rule to chain */ 467#define IP_FW_DEL 41 /* delete a firewall rule from chain */ 468#define IP_FW_FLUSH 42 /* flush firewall rule chain */ 469#define IP_FW_ZERO 43 /* clear single/all firewall counter(s) */ 470#define IP_FW_GET 44 /* get entire firewall rule chain */ 471#define IP_FW_RESETLOG 45 /* reset logging counters */ 472 473/* These older firewall socket option codes are maintained for backward compatibility. */ 474#define IP_OLD_FW_ADD 50 /* add a firewall rule to chain */ 475#define IP_OLD_FW_DEL 51 /* delete a firewall rule from chain */ 476#define IP_OLD_FW_FLUSH 52 /* flush firewall rule chain */ 477#define IP_OLD_FW_ZERO 53 /* clear single/all firewall counter(s) */ 478#define IP_OLD_FW_GET 54 /* get entire firewall rule chain */ 479#define IP_NAT__XXX 55 /* set/get NAT opts XXX Deprecated, do not use */ 480#define IP_OLD_FW_RESETLOG 56 /* reset logging counters */ 481 482#define IP_DUMMYNET_CONFIGURE 60 /* add/configure a dummynet pipe */ 483#define IP_DUMMYNET_DEL 61 /* delete a dummynet pipe from chain */ 484#define IP_DUMMYNET_FLUSH 62 /* flush dummynet */ 485#define IP_DUMMYNET_GET 64 /* get entire dummynet pipes */ 486 487#define IP_TRAFFIC_MGT_BACKGROUND 65 /* int*; get background IO flags; set background IO */ 488#define IP_MULTICAST_IFINDEX 66 /* int*; set/get IP multicast i/f index */ 489 490/* IPv4 Source Filter Multicast API [RFC3678] */ 491#define IP_ADD_SOURCE_MEMBERSHIP 70 /* join a source-specific group */ 492#define IP_DROP_SOURCE_MEMBERSHIP 71 /* drop a single source */ 493#define IP_BLOCK_SOURCE 72 /* block a source */ 494#define IP_UNBLOCK_SOURCE 73 /* unblock a source */ 495 496/* The following option is private; do not use it from user applications. */ 497#define IP_MSFILTER 74 /* set/get filter list */ 498 499/* Protocol Independent Multicast API [RFC3678] */ 500#define MCAST_JOIN_GROUP 80 /* join an any-source group */ 501#define MCAST_LEAVE_GROUP 81 /* leave all sources for group */ 502#define MCAST_JOIN_SOURCE_GROUP 82 /* join a source-specific group */ 503#define MCAST_LEAVE_SOURCE_GROUP 83 /* leave a single source */ 504#define MCAST_BLOCK_SOURCE 84 /* block a source */ 505#define MCAST_UNBLOCK_SOURCE 85 /* unblock a source */ 506 507#ifdef PRIVATE 508#define IP_FORCE_OUT_IFP 69 /* deprecated; use IP_BOUND_IF instead */ 509#define IP_NO_IFT_CELLULAR 6969 /* for internal use only */ 510#define IP_NO_IFT_PDP IP_NO_IFT_CELLULAR /* deprecated */ 511#define IP_OUT_IF 9696 /* for internal use only */ 512#endif /* PRIVATE */ 513 514/* 515 * Defaults and limits for options 516 */ 517#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 518#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 519 520/* 521 * The imo_membership vector for each socket is now dynamically allocated at 522 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized 523 * according to a power-of-two increment. 524 */ 525#define IP_MIN_MEMBERSHIPS 31 526#define IP_MAX_MEMBERSHIPS 4095 527 528/* 529 * Default resource limits for IPv4 multicast source filtering. 530 * These may be modified by sysctl. 531 */ 532#define IP_MAX_GROUP_SRC_FILTER 512 /* sources per group */ 533#define IP_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */ 534#define IP_MAX_SOCK_MUTE_FILTER 128 /* XXX no longer used */ 535 536/* 537 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 538 */ 539struct ip_mreq { 540 struct in_addr imr_multiaddr; /* IP multicast address of group */ 541 struct in_addr imr_interface; /* local IP address of interface */ 542}; 543 544/* 545 * Modified argument structure for IP_MULTICAST_IF, obtained from Linux. 546 * This is used to specify an interface index for multicast sends, as 547 * the IPv4 legacy APIs do not support this (unless IP_SENDIF is available). 548 */ 549struct ip_mreqn { 550 struct in_addr imr_multiaddr; /* IP multicast address of group */ 551 struct in_addr imr_address; /* local IP address of interface */ 552 int imr_ifindex; /* Interface index; cast to uint32_t */ 553}; 554 555#pragma pack(4) 556/* 557 * Argument structure for IPv4 Multicast Source Filter APIs. [RFC3678] 558 */ 559struct ip_mreq_source { 560 struct in_addr imr_multiaddr; /* IP multicast address of group */ 561 struct in_addr imr_sourceaddr; /* IP address of source */ 562 struct in_addr imr_interface; /* local IP address of interface */ 563}; 564 565/* 566 * Argument structures for Protocol-Independent Multicast Source 567 * Filter APIs. [RFC3678] 568 */ 569struct group_req { 570 uint32_t gr_interface; /* interface index */ 571 struct sockaddr_storage gr_group; /* group address */ 572}; 573 574struct group_source_req { 575 uint32_t gsr_interface; /* interface index */ 576 struct sockaddr_storage gsr_group; /* group address */ 577 struct sockaddr_storage gsr_source; /* source address */ 578}; 579 580#ifndef __MSFILTERREQ_DEFINED 581#define __MSFILTERREQ_DEFINED 582/* 583 * The following structure is private; do not use it from user applications. 584 * It is used to communicate IP_MSFILTER/IPV6_MSFILTER information between 585 * the RFC 3678 libc functions and the kernel. 586 */ 587struct __msfilterreq { 588 uint32_t msfr_ifindex; /* interface index */ 589 uint32_t msfr_fmode; /* filter mode for group */ 590 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 591 uint32_t __msfr_align; 592 struct sockaddr_storage msfr_group; /* group address */ 593 struct sockaddr_storage *msfr_srcs; 594}; 595 596#ifdef BSD_KERNEL_PRIVATE 597struct __msfilterreq32 { 598 uint32_t msfr_ifindex; /* interface index */ 599 uint32_t msfr_fmode; /* filter mode for group */ 600 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 601 uint32_t __msfr_align; 602 struct sockaddr_storage msfr_group; /* group address */ 603 user32_addr_t msfr_srcs; 604}; 605 606struct __msfilterreq64 { 607 uint32_t msfr_ifindex; /* interface index */ 608 uint32_t msfr_fmode; /* filter mode for group */ 609 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 610 uint32_t __msfr_align; 611 struct sockaddr_storage msfr_group; /* group address */ 612 user64_addr_t msfr_srcs; 613}; 614#endif /* BSD_KERNEL_PRIVATE */ 615#endif /* __MSFILTERREQ_DEFINED */ 616 617#pragma pack() 618struct sockaddr; 619 620#ifndef KERNEL 621/* 622 * Advanced (Full-state) APIs [RFC3678] 623 * The RFC specifies uint_t for the 6th argument to [sg]etsourcefilter(). 624 * We use uint32_t here to be consistent. 625 */ 626int setipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t, 627 uint32_t, struct in_addr *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3); 628int getipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t *, 629 uint32_t *, struct in_addr *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3); 630int setsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 631 uint32_t, uint32_t, struct sockaddr_storage *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3); 632int getsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 633 uint32_t *, uint32_t *, struct sockaddr_storage *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3); 634#endif 635 636/* 637 * Filter modes; also used to represent per-socket filter mode internally. 638 */ 639#define MCAST_UNDEFINED 0 /* fmode: not yet defined */ 640#define MCAST_INCLUDE 1 /* fmode: include these source(s) */ 641#define MCAST_EXCLUDE 2 /* fmode: exclude these source(s) */ 642 643/* 644 * Argument for IP_PORTRANGE: 645 * - which range to search when port is unspecified at bind() or connect() 646 */ 647#define IP_PORTRANGE_DEFAULT 0 /* default range */ 648#define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 649#define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 650 651 652/* 653 * IP_PKTINFO: Packet information (equivalent to RFC2292 sec 5 for IPv4) 654 * This structure is used for 655 * 656 * 1) Receiving ancilliary data about the datagram if IP_PKTINFO sockopt is 657 * set on the socket. In this case ipi_ifindex will contain the interface 658 * index the datagram was received on, ipi_addr is the IP address the 659 * datagram was received to. 660 * 661 * 2) Sending a datagram using a specific interface or IP source address. 662 * if ipi_ifindex is set to non-zero when in_pktinfo is passed as 663 * ancilliary data of type IP_PKTINFO, this will be used as the source 664 * interface to send the datagram from. If ipi_ifindex is null, ip_spec_dst 665 * will be used for the source address. 666 * 667 * Note: if IP_BOUND_IF is set on the socket, ipi_ifindex in the ancillary 668 * IP_PKTINFO option silently overrides the bound interface when it is 669 * specified during send time. 670 */ 671struct in_pktinfo { 672 unsigned int ipi_ifindex; /* send/recv interface index */ 673 struct in_addr ipi_spec_dst; /* Local address */ 674 struct in_addr ipi_addr; /* IP Header dst address */ 675}; 676 677/* 678 * Definitions for inet sysctl operations. 679 * 680 * Third level is protocol number. 681 * Fourth level is desired variable within that protocol. 682 */ 683#define IPPROTO_MAXID (IPPROTO_AH + 1) /* don't list to IPPROTO_MAX */ 684 685#ifdef BSD_KERNEL_PRIVATE 686#define CTL_IPPROTO_NAMES { \ 687 { "ip", CTLTYPE_NODE }, \ 688 { "icmp", CTLTYPE_NODE }, \ 689 { "igmp", CTLTYPE_NODE }, \ 690 { "ggp", CTLTYPE_NODE }, \ 691 { 0, 0 }, \ 692 { 0, 0 }, \ 693 { "tcp", CTLTYPE_NODE }, \ 694 { 0, 0 }, \ 695 { "egp", CTLTYPE_NODE }, \ 696 { 0, 0 }, \ 697 { 0, 0 }, \ 698 { 0, 0 }, \ 699 { "pup", CTLTYPE_NODE }, \ 700 { 0, 0 }, \ 701 { 0, 0 }, \ 702 { 0, 0 }, \ 703 { 0, 0 }, \ 704 { "udp", CTLTYPE_NODE }, \ 705 { 0, 0 }, \ 706 { 0, 0 }, \ 707 { 0, 0 }, \ 708 { 0, 0 }, \ 709 { "idp", CTLTYPE_NODE }, \ 710 { 0, 0 }, \ 711 { 0, 0 }, \ 712 { 0, 0 }, \ 713 { 0, 0 }, \ 714 { 0, 0 }, \ 715 { 0, 0 }, \ 716 { 0, 0 }, \ 717 { 0, 0 }, \ 718 { 0, 0 }, \ 719 { 0, 0 }, \ 720 { 0, 0 }, \ 721 { 0, 0 }, \ 722 { 0, 0 }, \ 723 { 0, 0 }, \ 724 { 0, 0 }, \ 725 { 0, 0 }, \ 726 { 0, 0 }, \ 727 { 0, 0 }, \ 728 { 0, 0 }, \ 729 { 0, 0 }, \ 730 { 0, 0 }, \ 731 { 0, 0 }, \ 732 { 0, 0 }, \ 733 { 0, 0 }, \ 734 { 0, 0 }, \ 735 { 0, 0 }, \ 736 { 0, 0 }, \ 737 { 0, 0 }, \ 738 { "ipsec", CTLTYPE_NODE }, \ 739} 740#endif /* BSD_KERNEL_PRIVATE */ 741 742/* 743 * Names for IP sysctl objects 744 */ 745#define IPCTL_FORWARDING 1 /* act as router */ 746#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ 747#define IPCTL_DEFTTL 3 /* default TTL */ 748#ifdef notyet 749#define IPCTL_DEFMTU 4 /* default MTU */ 750#endif 751#define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ 752#define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ 753#define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ 754#define IPCTL_SOURCEROUTE 8 /* may perform source routes */ 755#define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ 756#define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ 757#define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ 758#define IPCTL_STATS 12 /* ipstat structure */ 759#define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */ 760#define IPCTL_FASTFORWARDING 14 /* use fast IP forwarding code */ 761#define IPCTL_KEEPFAITH 15 /* deprecated */ 762#define IPCTL_GIF_TTL 16 /* default TTL for gif encap packet */ 763#define IPCTL_MAXID 17 764 765#ifdef BSD_KERNEL_PRIVATE 766 767#define IPCTL_NAMES { \ 768 { 0, 0 }, \ 769 { "forwarding", CTLTYPE_INT }, \ 770 { "redirect", CTLTYPE_INT }, \ 771 { "ttl", CTLTYPE_INT }, \ 772 { "mtu", CTLTYPE_INT }, \ 773 { "rtexpire", CTLTYPE_INT }, \ 774 { "rtminexpire", CTLTYPE_INT }, \ 775 { "rtmaxcache", CTLTYPE_INT }, \ 776 { "sourceroute", CTLTYPE_INT }, \ 777 { "directed-broadcast", CTLTYPE_INT }, \ 778 { "intr-queue-maxlen", CTLTYPE_INT }, \ 779 { "intr-queue-drops", CTLTYPE_INT }, \ 780 { "stats", CTLTYPE_STRUCT }, \ 781 { "accept_sourceroute", CTLTYPE_INT }, \ 782 { "fastforwarding", CTLTYPE_INT }, \ 783 { "keepfaith", CTLTYPE_INT }, \ 784 { "gifttl", CTLTYPE_INT }, \ 785} 786#endif /* BSD_KERNEL_PRIVATE */ 787#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 788 789/* INET6 stuff */ 790#define __KAME_NETINET_IN_H_INCLUDED_ 791#include <netinet6/in6.h> 792#undef __KAME_NETINET_IN_H_INCLUDED_ 793 794#ifdef PRIVATE 795/* 796 * Minimal sized structure to hold an IPv4 or IPv6 socket address 797 * as sockaddr_storage can waste memory 798 */ 799union sockaddr_in_4_6 { 800 struct sockaddr sa; 801 struct sockaddr_in sin; 802 struct sockaddr_in6 sin6; 803}; 804#endif /* PRIVATE */ 805 806#ifdef KERNEL 807#ifdef BSD_KERNEL_PRIVATE 808#include <mach/boolean.h> 809 810struct ip; 811struct ifnet; 812struct mbuf; 813 814extern boolean_t in_broadcast(struct in_addr, struct ifnet *); 815extern boolean_t in_canforward(struct in_addr); 816extern u_int32_t in_netof(struct in_addr); 817 818extern uint16_t inet_cksum(struct mbuf *, uint32_t, uint32_t, uint32_t); 819extern uint16_t in_addword(uint16_t, uint16_t); 820extern uint16_t in_pseudo(uint32_t, uint32_t, uint32_t); 821extern uint16_t in_pseudo64(uint64_t, uint64_t, uint64_t); 822extern uint16_t in_cksum_hdr_opt(const struct ip *); 823extern uint16_t ip_cksum_hdr_dir(struct mbuf *, uint32_t, int); 824extern uint32_t in_finalize_cksum(struct mbuf *, uint32_t, uint32_t); 825extern uint16_t b_sum16(const void *buf, int len); 826 827#define in_cksum(_m, _l) \ 828 inet_cksum(_m, 0, 0, _l) 829#define ip_cksum_hdr_in(_m, _l) \ 830 ip_cksum_hdr_dir(_m, _l, 0) 831#define ip_cksum_hdr_out(_m, _l) \ 832 ip_cksum_hdr_dir(_m, _l, 1) 833 834#define in_cksum_hdr(_ip) \ 835 (~b_sum16(_ip, sizeof (struct ip)) & 0xffff) 836 837#define in_cksum_offset(_m, _o) \ 838 ((void) in_finalize_cksum(_m, _o, CSUM_DELAY_IP)) 839#define in_delayed_cksum(_m) \ 840 ((void) in_finalize_cksum(_m, 0, CSUM_DELAY_DATA)) 841#define in_delayed_cksum_offset(_m, _o) \ 842 ((void) in_finalize_cksum(_m, _o, CSUM_DELAY_DATA)) 843 844#define in_hosteq(s, t) ((s).s_addr == (t).s_addr) 845#define in_nullhost(x) ((x).s_addr == INADDR_ANY) 846#define in_allhosts(x) ((x).s_addr == htonl(INADDR_ALLHOSTS_GROUP)) 847 848#define SIN(s) ((struct sockaddr_in *)(void *)s) 849#define satosin(sa) SIN(sa) 850#define sintosa(sin) ((struct sockaddr *)(void *)(sin)) 851#define SINIFSCOPE(s) ((struct sockaddr_inifscope *)(void *)(s)) 852#endif /* BSD_KERNEL_PRIVATE */ 853 854#ifdef KERNEL_PRIVATE 855/* exported for ApplicationFirewall */ 856extern int in_localaddr(struct in_addr); 857extern int inaddr_local(struct in_addr); 858#endif /* KERNEL_PRIVATE */ 859 860#define MAX_IPv4_STR_LEN 16 861#define MAX_IPv6_STR_LEN 64 862 863extern int inet_aton(const char *, struct in_addr *); /* in libkern */ 864extern char *inet_ntoa(struct in_addr); /* in libkern */ 865extern char *inet_ntoa_r(struct in_addr ina, char *buf, 866 size_t buflen); /* in libkern */ 867extern const char *inet_ntop(int, const void *, char *, socklen_t); /* in libkern*/ 868extern int inet_pton(int af, const char *, void *); /* in libkern */ 869#endif /* KERNEL */ 870 871#ifndef KERNEL 872#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 873__BEGIN_DECLS 874int bindresvport(int, struct sockaddr_in *); 875struct sockaddr; 876int bindresvport_sa(int, struct sockaddr *); 877__END_DECLS 878#endif 879#endif /* !KERNEL */ 880#endif /* _NETINET_IN_H_ */ 881