1 /* 2 * Copyright (c) 2000-2018 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 67 #ifndef DRIVERKIT 68 #include <sys/appleapiopts.h> 69 #include <stdint.h> /* uint(8|16|32)_t */ 70 71 #ifndef KERNEL 72 #include <Availability.h> 73 #endif 74 75 #else 76 #include <sys/_types.h> 77 #include <sys/_types/_sa_family_t.h> 78 #endif /* DRIVERKIT */ 79 80 #include <sys/_types/_in_addr_t.h> 81 #include <sys/_types/_in_port_t.h> 82 83 #ifndef DRIVERKIT 84 /* 85 * POSIX 1003.1-2003 86 * "Inclusion of the <netinet/in.h> header may also make visible all 87 * symbols from <inttypes.h> and <sys/socket.h>". 88 */ 89 #include <sys/socket.h> 90 #endif /* DRIVERKIT */ 91 92 /* 93 * The following two #includes insure htonl and family are defined 94 */ 95 #include <machine/endian.h> 96 #include <sys/_endian.h> 97 98 /* 99 * Constants and structures defined by the internet system, 100 * Per RFC 790, September 1981, and numerous additions. 101 */ 102 103 /* 104 * Protocols (RFC 1700) 105 */ 106 #define IPPROTO_IP 0 /* dummy for IP */ 107 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 108 #define IPPROTO_HOPOPTS 0 /* IP6 hop-by-hop options */ 109 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 110 #define IPPROTO_ICMP 1 /* control message protocol */ 111 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 112 #define IPPROTO_IGMP 2 /* group mgmt protocol */ 113 #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 114 #define IPPROTO_IPV4 4 /* IPv4 encapsulation */ 115 #define IPPROTO_IPIP IPPROTO_IPV4 /* for compatibility */ 116 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 117 #define IPPROTO_TCP 6 /* tcp */ 118 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 119 #define IPPROTO_ST 7 /* Stream protocol II */ 120 #define IPPROTO_EGP 8 /* exterior gateway protocol */ 121 #define IPPROTO_PIGP 9 /* private interior gateway */ 122 #define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */ 123 #define IPPROTO_NVPII 11 /* network voice protocol*/ 124 #define IPPROTO_PUP 12 /* pup */ 125 #define IPPROTO_ARGUS 13 /* Argus */ 126 #define IPPROTO_EMCON 14 /* EMCON */ 127 #define IPPROTO_XNET 15 /* Cross Net Debugger */ 128 #define IPPROTO_CHAOS 16 /* Chaos*/ 129 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 130 #define IPPROTO_UDP 17 /* user datagram protocol */ 131 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 132 #define IPPROTO_MUX 18 /* Multiplexing */ 133 #define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */ 134 #define IPPROTO_HMP 20 /* Host Monitoring */ 135 #define IPPROTO_PRM 21 /* Packet Radio Measurement */ 136 #define IPPROTO_IDP 22 /* xns idp */ 137 #define IPPROTO_TRUNK1 23 /* Trunk-1 */ 138 #define IPPROTO_TRUNK2 24 /* Trunk-2 */ 139 #define IPPROTO_LEAF1 25 /* Leaf-1 */ 140 #define IPPROTO_LEAF2 26 /* Leaf-2 */ 141 #define IPPROTO_RDP 27 /* Reliable Data */ 142 #define IPPROTO_IRTP 28 /* Reliable Transaction */ 143 #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 144 #define IPPROTO_BLT 30 /* Bulk Data Transfer */ 145 #define IPPROTO_NSP 31 /* Network Services */ 146 #define IPPROTO_INP 32 /* Merit Internodal */ 147 #define IPPROTO_SEP 33 /* Sequential Exchange */ 148 #define IPPROTO_3PC 34 /* Third Party Connect */ 149 #define IPPROTO_IDPR 35 /* InterDomain Policy Routing */ 150 #define IPPROTO_XTP 36 /* XTP */ 151 #define IPPROTO_DDP 37 /* Datagram Delivery */ 152 #define IPPROTO_CMTP 38 /* Control Message Transport */ 153 #define IPPROTO_TPXX 39 /* TP++ Transport */ 154 #define IPPROTO_IL 40 /* IL transport protocol */ 155 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 156 #define IPPROTO_IPV6 41 /* IP6 header */ 157 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 158 #define IPPROTO_SDRP 42 /* Source Demand Routing */ 159 #define IPPROTO_ROUTING 43 /* IP6 routing header */ 160 #define IPPROTO_FRAGMENT 44 /* IP6 fragmentation header */ 161 #define IPPROTO_IDRP 45 /* InterDomain Routing*/ 162 #define IPPROTO_RSVP 46 /* resource reservation */ 163 #define IPPROTO_GRE 47 /* General Routing Encap. */ 164 #define IPPROTO_MHRP 48 /* Mobile Host Routing */ 165 #define IPPROTO_BHA 49 /* BHA */ 166 #define IPPROTO_ESP 50 /* IP6 Encap Sec. Payload */ 167 #define IPPROTO_AH 51 /* IP6 Auth Header */ 168 #define IPPROTO_INLSP 52 /* Integ. Net Layer Security */ 169 #define IPPROTO_SWIPE 53 /* IP with encryption */ 170 #define IPPROTO_NHRP 54 /* Next Hop Resolution */ 171 /* 55-57: Unassigned */ 172 #define IPPROTO_ICMPV6 58 /* ICMP6 */ 173 #define IPPROTO_NONE 59 /* IP6 no next header */ 174 #define IPPROTO_DSTOPTS 60 /* IP6 destination option */ 175 #define IPPROTO_AHIP 61 /* any host internal protocol */ 176 #define IPPROTO_CFTP 62 /* CFTP */ 177 #define IPPROTO_HELLO 63 /* "hello" routing protocol */ 178 #define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */ 179 #define IPPROTO_KRYPTOLAN 65 /* Kryptolan */ 180 #define IPPROTO_RVD 66 /* Remote Virtual Disk */ 181 #define IPPROTO_IPPC 67 /* Pluribus Packet Core */ 182 #define IPPROTO_ADFS 68 /* Any distributed FS */ 183 #define IPPROTO_SATMON 69 /* Satnet Monitoring */ 184 #define IPPROTO_VISA 70 /* VISA Protocol */ 185 #define IPPROTO_IPCV 71 /* Packet Core Utility */ 186 #define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */ 187 #define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */ 188 #define IPPROTO_WSN 74 /* Wang Span Network */ 189 #define IPPROTO_PVP 75 /* Packet Video Protocol */ 190 #define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */ 191 #define IPPROTO_ND 77 /* Sun net disk proto (temp.) */ 192 #define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */ 193 #define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */ 194 #define IPPROTO_EON 80 /* ISO cnlp */ 195 #define IPPROTO_VMTP 81 /* VMTP */ 196 #define IPPROTO_SVMTP 82 /* Secure VMTP */ 197 #define IPPROTO_VINES 83 /* Banyon VINES */ 198 #define IPPROTO_TTP 84 /* TTP */ 199 #define IPPROTO_IGP 85 /* NSFNET-IGP */ 200 #define IPPROTO_DGP 86 /* dissimilar gateway prot. */ 201 #define IPPROTO_TCF 87 /* TCF */ 202 #define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */ 203 #define IPPROTO_OSPFIGP 89 /* OSPFIGP */ 204 #define IPPROTO_SRPC 90 /* Strite RPC protocol */ 205 #define IPPROTO_LARP 91 /* Locus Address Resoloution */ 206 #define IPPROTO_MTP 92 /* Multicast Transport */ 207 #define IPPROTO_AX25 93 /* AX.25 Frames */ 208 #define IPPROTO_IPEIP 94 /* IP encapsulated in IP */ 209 #define IPPROTO_MICP 95 /* Mobile Int.ing control */ 210 #define IPPROTO_SCCSP 96 /* Semaphore Comm. security */ 211 #define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */ 212 #define IPPROTO_ENCAP 98 /* encapsulation header */ 213 #define IPPROTO_APES 99 /* any private encr. scheme */ 214 #define IPPROTO_GMTP 100 /* GMTP*/ 215 /* 101-252: Partly Unassigned */ 216 #define IPPROTO_PIM 103 /* Protocol Independent Mcast */ 217 #define IPPROTO_IPCOMP 108 /* payload compression (IPComp) */ 218 #define IPPROTO_PGM 113 /* PGM */ 219 #define IPPROTO_SCTP 132 /* SCTP */ 220 /* 253-254: Experimentation and testing; 255: Reserved (RFC3692) */ 221 /* BSD Private, local use, namespace incursion */ 222 #define IPPROTO_DIVERT 254 /* divert pseudo-protocol */ 223 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 224 #define IPPROTO_RAW 255 /* raw IP packet */ 225 226 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 227 #define IPPROTO_MAX 256 228 229 /* last return value of *_input(), meaning "all job for this pkt is done". */ 230 #define IPPROTO_DONE 257 231 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 232 233 /* 234 * Local port number conventions: 235 * 236 * When a user does a bind(2) or connect(2) with a port number of zero, 237 * a non-conflicting local port address is chosen. 238 * The default range is IPPORT_RESERVED through 239 * IPPORT_USERRESERVED, although that is settable by sysctl. 240 * 241 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 242 * default assignment range. 243 * 244 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 245 * 246 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers 247 * into the "high" range. These are reserved for client outbound connections 248 * which do not want to be filtered by any firewalls. 249 * 250 * The value IP_PORTRANGE_LOW changes the range to the "low" are 251 * that is (by convention) restricted to privileged processes. This 252 * convention is based on "vouchsafe" principles only. It is only secure 253 * if you trust the remote host to restrict these ports. 254 * 255 * The default range of ports and the high range can be changed by 256 * sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto) 257 * 258 * Changing those values has bad security implications if you are 259 * using a a stateless firewall that is allowing packets outside of that 260 * range in order to allow transparent outgoing connections. 261 * 262 * Such a firewall configuration will generally depend on the use of these 263 * default values. If you change them, you may find your Security 264 * Administrator looking for you with a heavy object. 265 * 266 * For a slightly more orthodox text view on this: 267 * 268 * ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers 269 * 270 * port numbers are divided into three ranges: 271 * 272 * 0 - 1023 Well Known Ports 273 * 1024 - 49151 Registered Ports 274 * 49152 - 65535 Dynamic and/or Private Ports 275 * 276 */ 277 278 #define __DARWIN_IPPORT_RESERVED 1024 279 280 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 281 /* 282 * Ports < IPPORT_RESERVED are reserved for 283 * privileged processes (e.g. root). (IP_PORTRANGE_LOW) 284 * Ports > IPPORT_USERRESERVED are reserved 285 * for servers, not necessarily privileged. (IP_PORTRANGE_DEFAULT) 286 */ 287 #ifndef IPPORT_RESERVED 288 #define IPPORT_RESERVED __DARWIN_IPPORT_RESERVED 289 #endif 290 #define IPPORT_USERRESERVED 5000 291 292 /* 293 * Default local port range to use by setting IP_PORTRANGE_HIGH 294 */ 295 #define IPPORT_HIFIRSTAUTO 49152 296 #define IPPORT_HILASTAUTO 65535 297 298 /* 299 * Scanning for a free reserved port return a value below IPPORT_RESERVED, 300 * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was 301 * 512, but that conflicts with some well-known-services that firewalls may 302 * have a fit if we use. 303 */ 304 #define IPPORT_RESERVEDSTART 600 305 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 306 307 /* 308 * Internet address (a structure for historical reasons) 309 */ 310 struct in_addr { 311 in_addr_t s_addr; 312 }; 313 314 /* 315 * Definitions of bits in internet address integers. 316 * On subnets, the decomposition of addresses to host and net parts 317 * is done according to subnet mask, not the masks here. 318 */ 319 #define INADDR_ANY (u_int32_t)0x00000000 320 #define INADDR_BROADCAST (u_int32_t)0xffffffff /* must be masked */ 321 322 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 323 #define IN_CLASSA(i) (((u_int32_t)(i) & 0x80000000) == 0) 324 #define IN_CLASSA_NET 0xff000000 325 #define IN_CLASSA_NSHIFT 24 326 #define IN_CLASSA_HOST 0x00ffffff 327 #define IN_CLASSA_MAX 128 328 329 #define IN_CLASSB(i) (((u_int32_t)(i) & 0xc0000000) == 0x80000000) 330 #define IN_CLASSB_NET 0xffff0000 331 #define IN_CLASSB_NSHIFT 16 332 #define IN_CLASSB_HOST 0x0000ffff 333 #define IN_CLASSB_MAX 65536 334 335 #define IN_CLASSC(i) (((u_int32_t)(i) & 0xe0000000) == 0xc0000000) 336 #define IN_CLASSC_NET 0xffffff00 337 #define IN_CLASSC_NSHIFT 8 338 #define IN_CLASSC_HOST 0x000000ff 339 340 #define IN_CLASSD(i) (((u_int32_t)(i) & 0xf0000000) == 0xe0000000) 341 #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ 342 #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ 343 #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ 344 #define IN_MULTICAST(i) IN_CLASSD(i) 345 346 #define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 347 #define IN_BADCLASS(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 348 349 #define INADDR_LOOPBACK (u_int32_t)0x7f000001 350 351 #ifndef KERNEL 352 #define INADDR_NONE 0xffffffff /* -1 return */ 353 #endif 354 355 #define INADDR_UNSPEC_GROUP (u_int32_t)0xe0000000 /* 224.0.0.0 */ 356 #define INADDR_ALLHOSTS_GROUP (u_int32_t)0xe0000001 /* 224.0.0.1 */ 357 #define INADDR_ALLRTRS_GROUP (u_int32_t)0xe0000002 /* 224.0.0.2 */ 358 #define INADDR_ALLRPTS_GROUP (u_int32_t)0xe0000016 /* 224.0.0.22, IGMPv3 */ 359 #define INADDR_CARP_GROUP (u_int32_t)0xe0000012 /* 224.0.0.18 */ 360 #define INADDR_PFSYNC_GROUP (u_int32_t)0xe00000f0 /* 224.0.0.240 */ 361 #define INADDR_ALLMDNS_GROUP (u_int32_t)0xe00000fb /* 224.0.0.251 */ 362 #define INADDR_MAX_LOCAL_GROUP (u_int32_t)0xe00000ff /* 224.0.0.255 */ 363 364 #ifdef __APPLE__ 365 #define IN_LINKLOCALNETNUM (u_int32_t)0xA9FE0000 /* 169.254.0.0 */ 366 #define IN_LINKLOCAL(i) (((u_int32_t)(i) & IN_CLASSB_NET) == IN_LINKLOCALNETNUM) 367 #define IN_LOOPBACK(i) (((u_int32_t)(i) & 0xff000000) == 0x7f000000) 368 #define IN_ZERONET(i) (((u_int32_t)(i) & 0xff000000) == 0) 369 370 #define IN_PRIVATE(i) ((((u_int32_t)(i) & 0xff000000) == 0x0a000000) || \ 371 (((u_int32_t)(i) & 0xfff00000) == 0xac100000) || \ 372 (((u_int32_t)(i) & 0xffff0000) == 0xc0a80000)) 373 374 #define IN_LOCAL_GROUP(i) (((u_int32_t)(i) & 0xffffff00) == 0xe0000000) 375 376 #define IN_ANY_LOCAL(i) (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i)) 377 #endif /* __APPLE__ */ 378 379 #define IN_LOOPBACKNET 127 /* official! */ 380 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 381 382 /* 383 * Socket address, internet style. 384 */ 385 struct sockaddr_in { 386 __uint8_t sin_len; 387 sa_family_t sin_family; 388 in_port_t sin_port; 389 struct in_addr sin_addr; 390 char sin_zero[8]; 391 }; 392 393 #define IN_ARE_ADDR_EQUAL(a, b) \ 394 (bcmp(&(a)->s_addr, &(b)->s_addr, \ 395 sizeof (struct in_addr)) == 0) 396 397 #define INET_ADDRSTRLEN 16 398 399 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 400 /* 401 * Structure used to describe IP options. 402 * Used to store options internally, to pass them to a process, 403 * or to restore options retrieved earlier. 404 * The ip_dst is used for the first-hop gateway when using a source route 405 * (this gets put into the header proper). 406 */ 407 struct ip_opts { 408 struct in_addr ip_dst; /* first hop, 0 w/o src rt */ 409 char ip_opts[40]; /* actually variable in size */ 410 }; 411 412 /* 413 * Options for use with [gs]etsockopt at the IP level. 414 * First word of comment is data type; bool is stored in int. 415 */ 416 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 417 #define IP_HDRINCL 2 /* int; header is included with data */ 418 #define IP_TOS 3 /* int; IP type of service and preced. */ 419 #define IP_TTL 4 /* int; IP time to live */ 420 #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 421 #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 422 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 423 #define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 424 #define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */ 425 #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 426 #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 427 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 428 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 429 #define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ 430 #define IP_RSVP_ON 15 /* enable RSVP in kernel */ 431 #define IP_RSVP_OFF 16 /* disable RSVP in kernel */ 432 #define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ 433 #define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ 434 #define IP_PORTRANGE 19 /* int; range to choose for unspec port */ 435 #define IP_RECVIF 20 /* bool; receive reception if w/dgram */ 436 /* for IPSEC */ 437 #define IP_IPSEC_POLICY 21 /* int; set/get security policy */ 438 #define IP_FAITH 22 /* deprecated */ 439 #ifdef __APPLE__ 440 #define IP_STRIPHDR 23 /* bool: drop receive of raw IP header */ 441 #endif 442 #define IP_RECVTTL 24 /* bool; receive reception TTL w/dgram */ 443 #define IP_BOUND_IF 25 /* int; set/get bound interface */ 444 #define IP_PKTINFO 26 /* get pktinfo on recv socket, set src on sent dgram */ 445 #define IP_RECVPKTINFO IP_PKTINFO /* receive pktinfo w/dgram */ 446 #define IP_RECVTOS 27 /* bool; receive IP TOS w/dgram */ 447 #define IP_DONTFRAG 28 /* don't fragment packet */ 448 449 #define IP_FW_ADD 40 /* add a firewall rule to chain */ 450 #define IP_FW_DEL 41 /* delete a firewall rule from chain */ 451 #define IP_FW_FLUSH 42 /* flush firewall rule chain */ 452 #define IP_FW_ZERO 43 /* clear single/all firewall counter(s) */ 453 #define IP_FW_GET 44 /* get entire firewall rule chain */ 454 #define IP_FW_RESETLOG 45 /* reset logging counters */ 455 456 /* These older firewall socket option codes are maintained for backward compatibility. */ 457 #define IP_OLD_FW_ADD 50 /* add a firewall rule to chain */ 458 #define IP_OLD_FW_DEL 51 /* delete a firewall rule from chain */ 459 #define IP_OLD_FW_FLUSH 52 /* flush firewall rule chain */ 460 #define IP_OLD_FW_ZERO 53 /* clear single/all firewall counter(s) */ 461 #define IP_OLD_FW_GET 54 /* get entire firewall rule chain */ 462 #define IP_NAT__XXX 55 /* set/get NAT opts XXX Deprecated, do not use */ 463 #define IP_OLD_FW_RESETLOG 56 /* reset logging counters */ 464 465 #define IP_DUMMYNET_CONFIGURE 60 /* add/configure a dummynet pipe */ 466 #define IP_DUMMYNET_DEL 61 /* delete a dummynet pipe from chain */ 467 #define IP_DUMMYNET_FLUSH 62 /* flush dummynet */ 468 #define IP_DUMMYNET_GET 64 /* get entire dummynet pipes */ 469 470 #define IP_TRAFFIC_MGT_BACKGROUND 65 /* int*; get background IO flags; set background IO */ 471 #define IP_MULTICAST_IFINDEX 66 /* int*; set/get IP multicast i/f index */ 472 473 /* IPv4 Source Filter Multicast API [RFC3678] */ 474 #define IP_ADD_SOURCE_MEMBERSHIP 70 /* join a source-specific group */ 475 #define IP_DROP_SOURCE_MEMBERSHIP 71 /* drop a single source */ 476 #define IP_BLOCK_SOURCE 72 /* block a source */ 477 #define IP_UNBLOCK_SOURCE 73 /* unblock a source */ 478 479 /* The following option is private; do not use it from user applications. */ 480 #define IP_MSFILTER 74 /* set/get filter list */ 481 482 /* Protocol Independent Multicast API [RFC3678] */ 483 #define MCAST_JOIN_GROUP 80 /* join an any-source group */ 484 #define MCAST_LEAVE_GROUP 81 /* leave all sources for group */ 485 #define MCAST_JOIN_SOURCE_GROUP 82 /* join a source-specific group */ 486 #define MCAST_LEAVE_SOURCE_GROUP 83 /* leave a single source */ 487 #define MCAST_BLOCK_SOURCE 84 /* block a source */ 488 #define MCAST_UNBLOCK_SOURCE 85 /* unblock a source */ 489 490 #ifdef PRIVATE 491 /* See in_private.h for additional options */ 492 #endif /* PRIVATE */ 493 494 /* 495 * Defaults and limits for options 496 */ 497 #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 498 #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 499 500 /* 501 * The imo_membership vector for each socket is now dynamically allocated at 502 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized 503 * according to a power-of-two increment. 504 */ 505 #define IP_MIN_MEMBERSHIPS 31 506 #define IP_MAX_MEMBERSHIPS 4095 507 508 /* 509 * Default resource limits for IPv4 multicast source filtering. 510 * These may be modified by sysctl. 511 */ 512 #define IP_MAX_GROUP_SRC_FILTER 512 /* sources per group */ 513 #define IP_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */ 514 #define IP_MAX_SOCK_MUTE_FILTER 128 /* XXX no longer used */ 515 516 #ifndef XNU_PLATFORM_DriverKit 517 /* 518 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 519 */ 520 struct ip_mreq { 521 struct in_addr imr_multiaddr; /* IP multicast address of group */ 522 struct in_addr imr_interface; /* local IP address of interface */ 523 }; 524 525 /* 526 * Modified argument structure for IP_MULTICAST_IF, obtained from Linux. 527 * This is used to specify an interface index for multicast sends, as 528 * the IPv4 legacy APIs do not support this (unless IP_SENDIF is available). 529 */ 530 struct ip_mreqn { 531 struct in_addr imr_multiaddr; /* IP multicast address of group */ 532 struct in_addr imr_address; /* local IP address of interface */ 533 int imr_ifindex; /* Interface index; cast to uint32_t */ 534 }; 535 536 #pragma pack(4) 537 /* 538 * Argument structure for IPv4 Multicast Source Filter APIs. [RFC3678] 539 */ 540 struct ip_mreq_source { 541 struct in_addr imr_multiaddr; /* IP multicast address of group */ 542 struct in_addr imr_sourceaddr; /* IP address of source */ 543 struct in_addr imr_interface; /* local IP address of interface */ 544 }; 545 546 /* 547 * Argument structures for Protocol-Independent Multicast Source 548 * Filter APIs. [RFC3678] 549 */ 550 struct group_req { 551 uint32_t gr_interface; /* interface index */ 552 struct sockaddr_storage gr_group; /* group address */ 553 }; 554 555 struct group_source_req { 556 uint32_t gsr_interface; /* interface index */ 557 struct sockaddr_storage gsr_group; /* group address */ 558 struct sockaddr_storage gsr_source; /* source address */ 559 }; 560 561 #ifndef __MSFILTERREQ_DEFINED 562 #define __MSFILTERREQ_DEFINED 563 /* 564 * The following structure is private; do not use it from user applications. 565 * It is used to communicate IP_MSFILTER/IPV6_MSFILTER information between 566 * the RFC 3678 libc functions and the kernel. 567 */ 568 struct __msfilterreq { 569 uint32_t msfr_ifindex; /* interface index */ 570 uint32_t msfr_fmode; /* filter mode for group */ 571 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 572 uint32_t __msfr_align; 573 struct sockaddr_storage msfr_group; /* group address */ 574 struct sockaddr_storage *msfr_srcs; 575 }; 576 577 #ifdef BSD_KERNEL_PRIVATE 578 struct __msfilterreq32 { 579 uint32_t msfr_ifindex; /* interface index */ 580 uint32_t msfr_fmode; /* filter mode for group */ 581 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 582 uint32_t __msfr_align; 583 struct sockaddr_storage msfr_group; /* group address */ 584 user32_addr_t msfr_srcs; 585 }; 586 587 struct __msfilterreq64 { 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 user64_addr_t msfr_srcs; 594 }; 595 596 #endif /* BSD_KERNEL_PRIVATE */ 597 #endif /* __MSFILTERREQ_DEFINED */ 598 599 #pragma pack() 600 struct sockaddr; 601 602 #ifndef KERNEL 603 /* 604 * Advanced (Full-state) APIs [RFC3678] 605 * The RFC specifies uint_t for the 6th argument to [sg]etsourcefilter(). 606 * We use uint32_t here to be consistent. 607 */ 608 int setipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t, 609 uint32_t, struct in_addr *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3); 610 int getipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t *, 611 uint32_t *, struct in_addr *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3); 612 int setsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 613 uint32_t, uint32_t, struct sockaddr_storage *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3); 614 int getsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 615 uint32_t *, uint32_t *, struct sockaddr_storage *) __OSX_AVAILABLE_STARTING(__MAC_10_7, __IPHONE_4_3); 616 #endif 617 #endif /* XNU_PLATFORM_DriverKit */ 618 619 /* 620 * Filter modes; also used to represent per-socket filter mode internally. 621 */ 622 #define MCAST_UNDEFINED 0 /* fmode: not yet defined */ 623 #define MCAST_INCLUDE 1 /* fmode: include these source(s) */ 624 #define MCAST_EXCLUDE 2 /* fmode: exclude these source(s) */ 625 626 /* 627 * Argument for IP_PORTRANGE: 628 * - which range to search when port is unspecified at bind() or connect() 629 */ 630 #define IP_PORTRANGE_DEFAULT 0 /* default range */ 631 #define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 632 #define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 633 634 635 /* 636 * IP_PKTINFO: Packet information (equivalent to RFC2292 sec 5 for IPv4) 637 * This structure is used for 638 * 639 * 1) Receiving ancilliary data about the datagram if IP_PKTINFO sockopt is 640 * set on the socket. In this case ipi_ifindex will contain the interface 641 * index the datagram was received on, ipi_addr is the IP address the 642 * datagram was received to. 643 * 644 * 2) Sending a datagram using a specific interface or IP source address. 645 * if ipi_ifindex is set to non-zero when in_pktinfo is passed as 646 * ancilliary data of type IP_PKTINFO, this will be used as the source 647 * interface to send the datagram from. If ipi_ifindex is null, ip_spec_dst 648 * will be used for the source address. 649 * 650 * Note: if IP_BOUND_IF is set on the socket, ipi_ifindex in the ancillary 651 * IP_PKTINFO option silently overrides the bound interface when it is 652 * specified during send time. 653 */ 654 struct in_pktinfo { 655 unsigned int ipi_ifindex; /* send/recv interface index */ 656 struct in_addr ipi_spec_dst; /* Local address */ 657 struct in_addr ipi_addr; /* IP Header dst address */ 658 }; 659 660 /* 661 * Definitions for inet sysctl operations. 662 * 663 * Third level is protocol number. 664 * Fourth level is desired variable within that protocol. 665 */ 666 #define IPPROTO_MAXID (IPPROTO_AH + 1) /* don't list to IPPROTO_MAX */ 667 668 /* 669 * Names for IP sysctl objects 670 */ 671 #define IPCTL_FORWARDING 1 /* act as router */ 672 #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ 673 #define IPCTL_DEFTTL 3 /* default TTL */ 674 #ifdef notyet 675 #define IPCTL_DEFMTU 4 /* default MTU */ 676 #endif 677 #define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ 678 #define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ 679 #define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ 680 #define IPCTL_SOURCEROUTE 8 /* may perform source routes */ 681 #define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ 682 #define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ 683 #define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ 684 #define IPCTL_STATS 12 /* ipstat structure */ 685 #define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */ 686 #define IPCTL_FASTFORWARDING 14 /* use fast IP forwarding code */ 687 #define IPCTL_KEEPFAITH 15 /* deprecated */ 688 #define IPCTL_GIF_TTL 16 /* default TTL for gif encap packet */ 689 #define IPCTL_MAXID 17 690 691 #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 692 693 /* INET6 stuff */ 694 #define __KAME_NETINET_IN_H_INCLUDED_ 695 #include <netinet6/in6.h> 696 #undef __KAME_NETINET_IN_H_INCLUDED_ 697 698 #ifndef XNU_PLATFORM_DriverKit 699 #ifdef KERNEL 700 #define MAX_IPv4_STR_LEN 16 701 #define MAX_IPv6_STR_LEN 64 702 703 extern int inet_aton(const char *, struct in_addr *); /* in libkern */ 704 extern const char *inet_ntop(int, const void *, char *, socklen_t); /* in libkern*/ 705 #endif /* KERNEL */ 706 707 #ifndef KERNEL 708 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 709 __BEGIN_DECLS 710 int bindresvport(int, struct sockaddr_in *); 711 struct sockaddr; 712 int bindresvport_sa(int, struct sockaddr *); 713 __END_DECLS 714 #endif 715 #endif /* !KERNEL */ 716 #endif /* XNU_PLATFORM_DriverKit */ 717 718 #ifdef PRIVATE 719 #include <netinet/in_private.h> 720 #endif /* PRIVATE */ 721 722 #endif /* _NETINET_IN_H_ */ 723