in.h revision 176805
1/*- 2 * Copyright (c) 1982, 1986, 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)in.h 8.3 (Berkeley) 1/3/94 30 * $FreeBSD: head/sys/netinet/in.h 176805 2008-03-04 19:16:21Z rpaulo $ 31 */ 32 33#ifndef _NETINET_IN_H_ 34#define _NETINET_IN_H_ 35 36#include <sys/cdefs.h> 37#include <sys/_types.h> 38#include <machine/endian.h> 39 40/* Protocols common to RFC 1700, POSIX, and X/Open. */ 41#define IPPROTO_IP 0 /* dummy for IP */ 42#define IPPROTO_ICMP 1 /* control message protocol */ 43#define IPPROTO_TCP 6 /* tcp */ 44#define IPPROTO_UDP 17 /* user datagram protocol */ 45 46#define INADDR_ANY (u_int32_t)0x00000000 47#define INADDR_BROADCAST (u_int32_t)0xffffffff /* must be masked */ 48 49#ifndef _UINT8_T_DECLARED 50typedef __uint8_t uint8_t; 51#define _UINT8_T_DECLARED 52#endif 53 54#ifndef _UINT16_T_DECLARED 55typedef __uint16_t uint16_t; 56#define _UINT16_T_DECLARED 57#endif 58 59#ifndef _UINT32_T_DECLARED 60typedef __uint32_t uint32_t; 61#define _UINT32_T_DECLARED 62#endif 63 64#ifndef _IN_ADDR_T_DECLARED 65typedef uint32_t in_addr_t; 66#define _IN_ADDR_T_DECLARED 67#endif 68 69#ifndef _IN_PORT_T_DECLARED 70typedef uint16_t in_port_t; 71#define _IN_PORT_T_DECLARED 72#endif 73 74#ifndef _SA_FAMILY_T_DECLARED 75typedef __sa_family_t sa_family_t; 76#define _SA_FAMILY_T_DECLARED 77#endif 78 79/* Internet address (a structure for historical reasons). */ 80#ifndef _STRUCT_IN_ADDR_DECLARED 81struct in_addr { 82 in_addr_t s_addr; 83}; 84#define _STRUCT_IN_ADDR_DECLARED 85#endif 86 87#ifndef _SOCKLEN_T_DECLARED 88typedef __socklen_t socklen_t; 89#define _SOCKLEN_T_DECLARED 90#endif 91 92/* Avoid collision with original definition in sys/socket.h. */ 93#ifndef _STRUCT_SOCKADDR_STORAGE_DECLARED 94/* 95 * RFC 2553: protocol-independent placeholder for socket addresses 96 */ 97#define _SS_MAXSIZE 128U 98#define _SS_ALIGNSIZE (sizeof(__int64_t)) 99#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) - \ 100 sizeof(sa_family_t)) 101#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) - \ 102 sizeof(sa_family_t) - _SS_PAD1SIZE - _SS_ALIGNSIZE) 103 104struct sockaddr_storage { 105 unsigned char ss_len; /* address length */ 106 sa_family_t ss_family; /* address family */ 107 char __ss_pad1[_SS_PAD1SIZE]; 108 __int64_t __ss_align; /* force desired struct alignment */ 109 char __ss_pad2[_SS_PAD2SIZE]; 110}; 111#define _STRUCT_SOCKADDR_STORAGE_DECLARED 112#endif 113 114/* Socket address, internet style. */ 115struct sockaddr_in { 116 uint8_t sin_len; 117 sa_family_t sin_family; 118 in_port_t sin_port; 119 struct in_addr sin_addr; 120 char sin_zero[8]; 121}; 122 123#ifndef _KERNEL 124 125#ifndef _BYTEORDER_PROTOTYPED 126#define _BYTEORDER_PROTOTYPED 127__BEGIN_DECLS 128uint32_t htonl(uint32_t); 129uint16_t htons(uint16_t); 130uint32_t ntohl(uint32_t); 131uint16_t ntohs(uint16_t); 132__END_DECLS 133#endif 134 135#ifndef _BYTEORDER_FUNC_DEFINED 136#define _BYTEORDER_FUNC_DEFINED 137#define htonl(x) __htonl(x) 138#define htons(x) __htons(x) 139#define ntohl(x) __ntohl(x) 140#define ntohs(x) __ntohs(x) 141#endif 142 143#endif /* !_KERNEL */ 144 145#if __POSIX_VISIBLE >= 200112 146#define IPPROTO_RAW 255 /* raw IP packet */ 147#define INET_ADDRSTRLEN 16 148#endif 149 150#if __BSD_VISIBLE 151/* 152 * Constants and structures defined by the internet system, 153 * Per RFC 790, September 1981, and numerous additions. 154 */ 155 156/* 157 * Protocols (RFC 1700) 158 */ 159#define IPPROTO_HOPOPTS 0 /* IP6 hop-by-hop options */ 160#define IPPROTO_IGMP 2 /* group mgmt protocol */ 161#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 162#define IPPROTO_IPV4 4 /* IPv4 encapsulation */ 163#define IPPROTO_IPIP IPPROTO_IPV4 /* for compatibility */ 164#define IPPROTO_ST 7 /* Stream protocol II */ 165#define IPPROTO_EGP 8 /* exterior gateway protocol */ 166#define IPPROTO_PIGP 9 /* private interior gateway */ 167#define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */ 168#define IPPROTO_NVPII 11 /* network voice protocol*/ 169#define IPPROTO_PUP 12 /* pup */ 170#define IPPROTO_ARGUS 13 /* Argus */ 171#define IPPROTO_EMCON 14 /* EMCON */ 172#define IPPROTO_XNET 15 /* Cross Net Debugger */ 173#define IPPROTO_CHAOS 16 /* Chaos*/ 174#define IPPROTO_MUX 18 /* Multiplexing */ 175#define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */ 176#define IPPROTO_HMP 20 /* Host Monitoring */ 177#define IPPROTO_PRM 21 /* Packet Radio Measurement */ 178#define IPPROTO_IDP 22 /* xns idp */ 179#define IPPROTO_TRUNK1 23 /* Trunk-1 */ 180#define IPPROTO_TRUNK2 24 /* Trunk-2 */ 181#define IPPROTO_LEAF1 25 /* Leaf-1 */ 182#define IPPROTO_LEAF2 26 /* Leaf-2 */ 183#define IPPROTO_RDP 27 /* Reliable Data */ 184#define IPPROTO_IRTP 28 /* Reliable Transaction */ 185#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 186#define IPPROTO_BLT 30 /* Bulk Data Transfer */ 187#define IPPROTO_NSP 31 /* Network Services */ 188#define IPPROTO_INP 32 /* Merit Internodal */ 189#define IPPROTO_SEP 33 /* Sequential Exchange */ 190#define IPPROTO_3PC 34 /* Third Party Connect */ 191#define IPPROTO_IDPR 35 /* InterDomain Policy Routing */ 192#define IPPROTO_XTP 36 /* XTP */ 193#define IPPROTO_DDP 37 /* Datagram Delivery */ 194#define IPPROTO_CMTP 38 /* Control Message Transport */ 195#define IPPROTO_TPXX 39 /* TP++ Transport */ 196#define IPPROTO_IL 40 /* IL transport protocol */ 197#define IPPROTO_IPV6 41 /* IP6 header */ 198#define IPPROTO_SDRP 42 /* Source Demand Routing */ 199#define IPPROTO_ROUTING 43 /* IP6 routing header */ 200#define IPPROTO_FRAGMENT 44 /* IP6 fragmentation header */ 201#define IPPROTO_IDRP 45 /* InterDomain Routing*/ 202#define IPPROTO_RSVP 46 /* resource reservation */ 203#define IPPROTO_GRE 47 /* General Routing Encap. */ 204#define IPPROTO_MHRP 48 /* Mobile Host Routing */ 205#define IPPROTO_BHA 49 /* BHA */ 206#define IPPROTO_ESP 50 /* IP6 Encap Sec. Payload */ 207#define IPPROTO_AH 51 /* IP6 Auth Header */ 208#define IPPROTO_INLSP 52 /* Integ. Net Layer Security */ 209#define IPPROTO_SWIPE 53 /* IP with encryption */ 210#define IPPROTO_NHRP 54 /* Next Hop Resolution */ 211#define IPPROTO_MOBILE 55 /* IP Mobility */ 212#define IPPROTO_TLSP 56 /* Transport Layer Security */ 213#define IPPROTO_SKIP 57 /* SKIP */ 214#define IPPROTO_ICMPV6 58 /* ICMP6 */ 215#define IPPROTO_NONE 59 /* IP6 no next header */ 216#define IPPROTO_DSTOPTS 60 /* IP6 destination option */ 217#define IPPROTO_AHIP 61 /* any host internal protocol */ 218#define IPPROTO_CFTP 62 /* CFTP */ 219#define IPPROTO_HELLO 63 /* "hello" routing protocol */ 220#define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */ 221#define IPPROTO_KRYPTOLAN 65 /* Kryptolan */ 222#define IPPROTO_RVD 66 /* Remote Virtual Disk */ 223#define IPPROTO_IPPC 67 /* Pluribus Packet Core */ 224#define IPPROTO_ADFS 68 /* Any distributed FS */ 225#define IPPROTO_SATMON 69 /* Satnet Monitoring */ 226#define IPPROTO_VISA 70 /* VISA Protocol */ 227#define IPPROTO_IPCV 71 /* Packet Core Utility */ 228#define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */ 229#define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */ 230#define IPPROTO_WSN 74 /* Wang Span Network */ 231#define IPPROTO_PVP 75 /* Packet Video Protocol */ 232#define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */ 233#define IPPROTO_ND 77 /* Sun net disk proto (temp.) */ 234#define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */ 235#define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */ 236#define IPPROTO_EON 80 /* ISO cnlp */ 237#define IPPROTO_VMTP 81 /* VMTP */ 238#define IPPROTO_SVMTP 82 /* Secure VMTP */ 239#define IPPROTO_VINES 83 /* Banyon VINES */ 240#define IPPROTO_TTP 84 /* TTP */ 241#define IPPROTO_IGP 85 /* NSFNET-IGP */ 242#define IPPROTO_DGP 86 /* dissimilar gateway prot. */ 243#define IPPROTO_TCF 87 /* TCF */ 244#define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */ 245#define IPPROTO_OSPFIGP 89 /* OSPFIGP */ 246#define IPPROTO_SRPC 90 /* Strite RPC protocol */ 247#define IPPROTO_LARP 91 /* Locus Address Resoloution */ 248#define IPPROTO_MTP 92 /* Multicast Transport */ 249#define IPPROTO_AX25 93 /* AX.25 Frames */ 250#define IPPROTO_IPEIP 94 /* IP encapsulated in IP */ 251#define IPPROTO_MICP 95 /* Mobile Int.ing control */ 252#define IPPROTO_SCCSP 96 /* Semaphore Comm. security */ 253#define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */ 254#define IPPROTO_ENCAP 98 /* encapsulation header */ 255#define IPPROTO_APES 99 /* any private encr. scheme */ 256#define IPPROTO_GMTP 100 /* GMTP*/ 257#define IPPROTO_IPCOMP 108 /* payload compression (IPComp) */ 258#define IPPROTO_SCTP 132 /* SCTP */ 259/* 101-254: Partly Unassigned */ 260#define IPPROTO_PIM 103 /* Protocol Independent Mcast */ 261#define IPPROTO_CARP 112 /* CARP */ 262#define IPPROTO_PGM 113 /* PGM */ 263#define IPPROTO_PFSYNC 240 /* PFSYNC */ 264/* 255: Reserved */ 265/* BSD Private, local use, namespace incursion, no longer used */ 266#define IPPROTO_OLD_DIVERT 254 /* OLD divert pseudo-proto */ 267#define IPPROTO_MAX 256 268 269/* last return value of *_input(), meaning "all job for this pkt is done". */ 270#define IPPROTO_DONE 257 271 272/* Only used internally, so can be outside the range of valid IP protocols. */ 273#define IPPROTO_DIVERT 258 /* divert pseudo-protocol */ 274 275/* 276 * Defined to avoid confusion. The master value is defined by 277 * PROTO_SPACER in sys/protosw.h. 278 */ 279#define IPPROTO_SPACER 32767 /* spacer for loadable protos */ 280 281/* 282 * Local port number conventions: 283 * 284 * When a user does a bind(2) or connect(2) with a port number of zero, 285 * a non-conflicting local port address is chosen. 286 * The default range is IPPORT_HIFIRSTAUTO through 287 * IPPORT_HILASTAUTO, although that is settable by sysctl. 288 * 289 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 290 * default assignment range. 291 * 292 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 293 * 294 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers 295 * into the "high" range. These are reserved for client outbound connections 296 * which do not want to be filtered by any firewalls. 297 * 298 * The value IP_PORTRANGE_LOW changes the range to the "low" are 299 * that is (by convention) restricted to privileged processes. This 300 * convention is based on "vouchsafe" principles only. It is only secure 301 * if you trust the remote host to restrict these ports. 302 * 303 * The default range of ports and the high range can be changed by 304 * sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto) 305 * 306 * Changing those values has bad security implications if you are 307 * using a stateless firewall that is allowing packets outside of that 308 * range in order to allow transparent outgoing connections. 309 * 310 * Such a firewall configuration will generally depend on the use of these 311 * default values. If you change them, you may find your Security 312 * Administrator looking for you with a heavy object. 313 * 314 * For a slightly more orthodox text view on this: 315 * 316 * ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers 317 * 318 * port numbers are divided into three ranges: 319 * 320 * 0 - 1023 Well Known Ports 321 * 1024 - 49151 Registered Ports 322 * 49152 - 65535 Dynamic and/or Private Ports 323 * 324 */ 325 326/* 327 * Ports < IPPORT_RESERVED are reserved for 328 * privileged processes (e.g. root). (IP_PORTRANGE_LOW) 329 */ 330#define IPPORT_RESERVED 1024 331 332/* 333 * Default local port range, used by IP_PORTRANGE_DEFAULT 334 */ 335#define IPPORT_EPHEMERALFIRST 10000 336#define IPPORT_EPHEMERALLAST 65535 337 338/* 339 * Dynamic port range, used by IP_PORTRANGE_HIGH. 340 */ 341#define IPPORT_HIFIRSTAUTO 49152 342#define IPPORT_HILASTAUTO 65535 343 344/* 345 * Scanning for a free reserved port return a value below IPPORT_RESERVED, 346 * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was 347 * 512, but that conflicts with some well-known-services that firewalls may 348 * have a fit if we use. 349 */ 350#define IPPORT_RESERVEDSTART 600 351 352#define IPPORT_MAX 65535 353 354/* 355 * Definitions of bits in internet address integers. 356 * On subnets, the decomposition of addresses to host and net parts 357 * is done according to subnet mask, not the masks here. 358 */ 359#define IN_CLASSA(i) (((u_int32_t)(i) & 0x80000000) == 0) 360#define IN_CLASSA_NET 0xff000000 361#define IN_CLASSA_NSHIFT 24 362#define IN_CLASSA_HOST 0x00ffffff 363#define IN_CLASSA_MAX 128 364 365#define IN_CLASSB(i) (((u_int32_t)(i) & 0xc0000000) == 0x80000000) 366#define IN_CLASSB_NET 0xffff0000 367#define IN_CLASSB_NSHIFT 16 368#define IN_CLASSB_HOST 0x0000ffff 369#define IN_CLASSB_MAX 65536 370 371#define IN_CLASSC(i) (((u_int32_t)(i) & 0xe0000000) == 0xc0000000) 372#define IN_CLASSC_NET 0xffffff00 373#define IN_CLASSC_NSHIFT 8 374#define IN_CLASSC_HOST 0x000000ff 375 376#define IN_CLASSD(i) (((u_int32_t)(i) & 0xf0000000) == 0xe0000000) 377#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ 378#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ 379#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ 380#define IN_MULTICAST(i) IN_CLASSD(i) 381 382#define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 383#define IN_BADCLASS(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 384 385#define IN_LINKLOCAL(i) (((u_int32_t)(i) & 0xffff0000) == 0xa9fe0000) 386 387#define IN_PRIVATE(i) ((((u_int32_t)(i) & 0xff000000) == 0x0a000000) || \ 388 (((u_int32_t)(i) & 0xfff00000) == 0xac100000) || \ 389 (((u_int32_t)(i) & 0xffff0000) == 0xc0a80000)) 390 391#define IN_LOCAL_GROUP(i) (((u_int32_t)(i) & 0xffffff00) == 0xe0000000) 392 393#define IN_ANY_LOCAL(i) (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i)) 394 395#define INADDR_LOOPBACK (u_int32_t)0x7f000001 396#ifndef _KERNEL 397#define INADDR_NONE 0xffffffff /* -1 return */ 398#endif 399 400#define INADDR_UNSPEC_GROUP (u_int32_t)0xe0000000 /* 224.0.0.0 */ 401#define INADDR_ALLHOSTS_GROUP (u_int32_t)0xe0000001 /* 224.0.0.1 */ 402#define INADDR_ALLRTRS_GROUP (u_int32_t)0xe0000002 /* 224.0.0.2 */ 403#define INADDR_ALLRPTS_GROUP (u_int32_t)0xe0000016 /* 224.0.0.22, IGMPv3 */ 404#define INADDR_CARP_GROUP (u_int32_t)0xe0000012 /* 224.0.0.18 */ 405#define INADDR_PFSYNC_GROUP (u_int32_t)0xe00000f0 /* 224.0.0.240 */ 406#define INADDR_ALLMDNS_GROUP (u_int32_t)0xe00000fb /* 224.0.0.251 */ 407#define INADDR_MAX_LOCAL_GROUP (u_int32_t)0xe00000ff /* 224.0.0.255 */ 408 409#define IN_LOOPBACKNET 127 /* official! */ 410 411/* 412 * Options for use with [gs]etsockopt at the IP level. 413 * First word of comment is data type; bool is stored in int. 414 */ 415#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 416#define IP_HDRINCL 2 /* int; header is included with data */ 417#define IP_TOS 3 /* int; IP type of service and preced. */ 418#define IP_TTL 4 /* int; IP time to live */ 419#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 420#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 421#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 422#define IP_SENDSRCADDR IP_RECVDSTADDR /* cmsg_type to set src addr */ 423#define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 424#define IP_MULTICAST_IF 9 /* struct in_addr *or* struct ip_mreqn; 425 * set/get IP multicast i/f */ 426#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 427#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 428#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 429#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 430#define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ 431#define IP_RSVP_ON 15 /* enable RSVP in kernel */ 432#define IP_RSVP_OFF 16 /* disable RSVP in kernel */ 433#define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ 434#define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ 435#define IP_PORTRANGE 19 /* int; range to choose for unspec port */ 436#define IP_RECVIF 20 /* bool; receive reception if w/dgram */ 437/* for IPSEC */ 438#define IP_IPSEC_POLICY 21 /* int; set/get security policy */ 439#define IP_FAITH 22 /* bool; accept FAITH'ed connections */ 440 441#define IP_ONESBCAST 23 /* bool: send all-ones broadcast */ 442 443#define IP_FW_TABLE_ADD 40 /* add entry */ 444#define IP_FW_TABLE_DEL 41 /* delete entry */ 445#define IP_FW_TABLE_FLUSH 42 /* flush table */ 446#define IP_FW_TABLE_GETSIZE 43 /* get table size */ 447#define IP_FW_TABLE_LIST 44 /* list table contents */ 448 449#define IP_FW_ADD 50 /* add a firewall rule to chain */ 450#define IP_FW_DEL 51 /* delete a firewall rule from chain */ 451#define IP_FW_FLUSH 52 /* flush firewall rule chain */ 452#define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */ 453#define IP_FW_GET 54 /* get entire firewall rule chain */ 454#define IP_FW_RESETLOG 55 /* reset logging counters */ 455 456#define IP_FW_NAT_CFG 56 /* add/config a nat rule */ 457#define IP_FW_NAT_DEL 57 /* delete a nat rule */ 458#define IP_FW_NAT_GET_CONFIG 58 /* get configuration of a nat rule */ 459#define IP_FW_NAT_GET_LOG 59 /* get log of a nat rule */ 460 461#define IP_DUMMYNET_CONFIGURE 60 /* add/configure a dummynet pipe */ 462#define IP_DUMMYNET_DEL 61 /* delete a dummynet pipe from chain */ 463#define IP_DUMMYNET_FLUSH 62 /* flush dummynet */ 464#define IP_DUMMYNET_GET 64 /* get entire dummynet pipes */ 465 466#define IP_RECVTTL 65 /* bool; receive IP TTL w/dgram */ 467#define IP_MINTTL 66 /* minimum TTL for packet or drop */ 468#define IP_DONTFRAG 67 /* don't fragment packet */ 469 470/* IPv4 Source Filter Multicast API [RFC3678] */ 471#define IP_ADD_SOURCE_MEMBERSHIP 70 /* join a source-specific group */ 472#define IP_DROP_SOURCE_MEMBERSHIP 71 /* drop a single source */ 473#define IP_BLOCK_SOURCE 72 /* block a source */ 474#define IP_UNBLOCK_SOURCE 73 /* unblock a source */ 475 476/* The following option is private; do not use it from user applications. */ 477#define IP_MSFILTER 74 /* set/get filter list */ 478 479/* Protocol Independent Multicast API [RFC3678] */ 480#define MCAST_JOIN_GROUP 80 /* join an any-source group */ 481#define MCAST_LEAVE_GROUP 81 /* leave all sources for group */ 482#define MCAST_JOIN_SOURCE_GROUP 82 /* join a source-specific group */ 483#define MCAST_LEAVE_SOURCE_GROUP 83 /* leave a single source */ 484#define MCAST_BLOCK_SOURCE 84 /* block a source */ 485#define MCAST_UNBLOCK_SOURCE 85 /* unblock a source */ 486 487/* 488 * Defaults and limits for options 489 */ 490#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 491#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 492 493/* 494 * The imo_membership vector for each socket is now dynamically allocated at 495 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized 496 * according to a power-of-two increment. 497 */ 498#define IP_MIN_MEMBERSHIPS 31 499#define IP_MAX_MEMBERSHIPS 4095 500#define IP_MAX_SOURCE_FILTER 1024 /* # of filters per socket, per group */ 501 502/* 503 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 504 */ 505struct ip_mreq { 506 struct in_addr imr_multiaddr; /* IP multicast address of group */ 507 struct in_addr imr_interface; /* local IP address of interface */ 508}; 509 510/* 511 * Modified argument structure for IP_MULTICAST_IF, obtained from Linux. 512 * This is used to specify an interface index for multicast sends, as 513 * the IPv4 legacy APIs do not support this (unless IP_SENDIF is available). 514 */ 515struct ip_mreqn { 516 struct in_addr imr_multiaddr; /* IP multicast address of group */ 517 struct in_addr imr_address; /* local IP address of interface */ 518 int imr_ifindex; /* Interface index; cast to uint32_t */ 519}; 520 521/* 522 * Argument structure for IPv4 Multicast Source Filter APIs. [RFC3678] 523 */ 524struct ip_mreq_source { 525 struct in_addr imr_multiaddr; /* IP multicast address of group */ 526 struct in_addr imr_sourceaddr; /* IP address of source */ 527 struct in_addr imr_interface; /* local IP address of interface */ 528}; 529 530/* 531 * Argument structures for Protocol-Independent Multicast Source 532 * Filter APIs. [RFC3678] 533 */ 534struct group_req { 535 uint32_t gr_interface; /* interface index */ 536 struct sockaddr_storage gr_group; /* group address */ 537}; 538 539struct group_source_req { 540 uint32_t gsr_interface; /* interface index */ 541 struct sockaddr_storage gsr_group; /* group address */ 542 struct sockaddr_storage gsr_source; /* source address */ 543}; 544 545#ifndef __MSFILTERREQ_DEFINED 546#define __MSFILTERREQ_DEFINED 547/* 548 * The following structure is private; do not use it from user applications. 549 * It is used to communicate IP_MSFILTER/IPV6_MSFILTER information between 550 * the RFC 3678 libc functions and the kernel. 551 */ 552struct __msfilterreq { 553 uint32_t msfr_ifindex; /* interface index */ 554 uint32_t msfr_fmode; /* filter mode for group */ 555 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 556 struct sockaddr_storage msfr_group; /* group address */ 557 struct sockaddr_storage *msfr_srcs; /* pointer to the first member 558 * of a contiguous array of 559 * sources to filter in full. 560 */ 561}; 562#endif 563 564struct sockaddr; 565 566/* 567 * Advanced (Full-state) APIs [RFC3678] 568 * The RFC specifies uint_t for the 6th argument to [sg]etsourcefilter(). 569 * We use uint32_t here to be consistent. 570 */ 571int setipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t, 572 uint32_t, struct in_addr *); 573int getipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t *, 574 uint32_t *, struct in_addr *); 575int setsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 576 uint32_t, uint32_t, struct sockaddr_storage *); 577int getsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 578 uint32_t *, uint32_t *, struct sockaddr_storage *); 579 580/* 581 * Filter modes; also used to represent per-socket filter mode internally. 582 */ 583#define MCAST_INCLUDE 1 /* fmode: include these source(s) */ 584#define MCAST_EXCLUDE 2 /* fmode: exclude these source(s) */ 585 586/* 587 * Argument for IP_PORTRANGE: 588 * - which range to search when port is unspecified at bind() or connect() 589 */ 590#define IP_PORTRANGE_DEFAULT 0 /* default range */ 591#define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 592#define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 593 594/* 595 * Definitions for inet sysctl operations. 596 * 597 * Third level is protocol number. 598 * Fourth level is desired variable within that protocol. 599 */ 600#define IPPROTO_MAXID (IPPROTO_AH + 1) /* don't list to IPPROTO_MAX */ 601 602#define CTL_IPPROTO_NAMES { \ 603 { "ip", CTLTYPE_NODE }, \ 604 { "icmp", CTLTYPE_NODE }, \ 605 { "igmp", CTLTYPE_NODE }, \ 606 { "ggp", CTLTYPE_NODE }, \ 607 { 0, 0 }, \ 608 { 0, 0 }, \ 609 { "tcp", CTLTYPE_NODE }, \ 610 { 0, 0 }, \ 611 { "egp", CTLTYPE_NODE }, \ 612 { 0, 0 }, \ 613 { 0, 0 }, \ 614 { 0, 0 }, \ 615 { "pup", CTLTYPE_NODE }, \ 616 { 0, 0 }, \ 617 { 0, 0 }, \ 618 { 0, 0 }, \ 619 { 0, 0 }, \ 620 { "udp", CTLTYPE_NODE }, \ 621 { 0, 0 }, \ 622 { 0, 0 }, \ 623 { 0, 0 }, \ 624 { 0, 0 }, \ 625 { "idp", CTLTYPE_NODE }, \ 626 { 0, 0 }, \ 627 { 0, 0 }, \ 628 { 0, 0 }, \ 629 { 0, 0 }, \ 630 { 0, 0 }, \ 631 { 0, 0 }, \ 632 { 0, 0 }, \ 633 { 0, 0 }, \ 634 { 0, 0 }, \ 635 { 0, 0 }, \ 636 { 0, 0 }, \ 637 { 0, 0 }, \ 638 { 0, 0 }, \ 639 { 0, 0 }, \ 640 { 0, 0 }, \ 641 { 0, 0 }, \ 642 { 0, 0 }, \ 643 { 0, 0 }, \ 644 { 0, 0 }, \ 645 { 0, 0 }, \ 646 { 0, 0 }, \ 647 { 0, 0 }, \ 648 { 0, 0 }, \ 649 { 0, 0 }, \ 650 { 0, 0 }, \ 651 { 0, 0 }, \ 652 { 0, 0 }, \ 653 { 0, 0 }, \ 654 { "ipsec", CTLTYPE_NODE }, \ 655 { 0, 0 }, \ 656 { 0, 0 }, \ 657 { 0, 0 }, \ 658 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 659 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 660 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 661 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 662 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 663 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 664 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 665 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 666 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 667 { 0, 0 }, \ 668 { 0, 0 }, \ 669 { 0, 0 }, \ 670 { "pim", CTLTYPE_NODE }, \ 671} 672 673/* 674 * Names for IP sysctl objects 675 */ 676#define IPCTL_FORWARDING 1 /* act as router */ 677#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ 678#define IPCTL_DEFTTL 3 /* default TTL */ 679#ifdef notyet 680#define IPCTL_DEFMTU 4 /* default MTU */ 681#endif 682#define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ 683#define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ 684#define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ 685#define IPCTL_SOURCEROUTE 8 /* may perform source routes */ 686#define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ 687#define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ 688#define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ 689#define IPCTL_STATS 12 /* ipstat structure */ 690#define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */ 691#define IPCTL_FASTFORWARDING 14 /* use fast IP forwarding code */ 692#define IPCTL_KEEPFAITH 15 /* FAITH IPv4->IPv6 translater ctl */ 693#define IPCTL_GIF_TTL 16 /* default TTL for gif encap packet */ 694#define IPCTL_MAXID 17 695 696#define IPCTL_NAMES { \ 697 { 0, 0 }, \ 698 { "forwarding", CTLTYPE_INT }, \ 699 { "redirect", CTLTYPE_INT }, \ 700 { "ttl", CTLTYPE_INT }, \ 701 { "mtu", CTLTYPE_INT }, \ 702 { "rtexpire", CTLTYPE_INT }, \ 703 { "rtminexpire", CTLTYPE_INT }, \ 704 { "rtmaxcache", CTLTYPE_INT }, \ 705 { "sourceroute", CTLTYPE_INT }, \ 706 { "directed-broadcast", CTLTYPE_INT }, \ 707 { "intr-queue-maxlen", CTLTYPE_INT }, \ 708 { "intr-queue-drops", CTLTYPE_INT }, \ 709 { "stats", CTLTYPE_STRUCT }, \ 710 { "accept_sourceroute", CTLTYPE_INT }, \ 711 { "fastforwarding", CTLTYPE_INT }, \ 712} 713 714#endif /* __BSD_VISIBLE */ 715 716#ifdef _KERNEL 717 718struct ifnet; struct mbuf; /* forward declarations for Standard C */ 719 720int in_broadcast(struct in_addr, struct ifnet *); 721int in_canforward(struct in_addr); 722int in_localaddr(struct in_addr); 723int in_localip(struct in_addr); 724char *inet_ntoa(struct in_addr); /* in libkern */ 725char *inet_ntoa_r(struct in_addr ina, char *buf); /* in libkern */ 726void in_ifdetach(struct ifnet *); 727 728#define in_hosteq(s, t) ((s).s_addr == (t).s_addr) 729#define in_nullhost(x) ((x).s_addr == INADDR_ANY) 730 731#define satosin(sa) ((struct sockaddr_in *)(sa)) 732#define sintosa(sin) ((struct sockaddr *)(sin)) 733#define ifatoia(ifa) ((struct in_ifaddr *)(ifa)) 734 735#endif /* _KERNEL */ 736 737/* INET6 stuff */ 738#if __POSIX_VISIBLE >= 200112 739#define __KAME_NETINET_IN_H_INCLUDED_ 740#include <netinet6/in6.h> 741#undef __KAME_NETINET_IN_H_INCLUDED_ 742#endif 743 744#endif /* !_NETINET_IN_H_*/ 745