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 * $FreeBSD$ 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 50 typedef __uint8_t uint8_t; 51 #define _UINT8_T_DECLARED 52 #endif 53 54 #ifndef _UINT16_T_DECLARED 55 typedef __uint16_t uint16_t; 56 #define _UINT16_T_DECLARED 57 #endif 58 59 #ifndef _UINT32_T_DECLARED 60 typedef __uint32_t uint32_t; 61 #define _UINT32_T_DECLARED 62 #endif 63 64 #ifndef _IN_ADDR_T_DECLARED 65 typedef uint32_t in_addr_t; 66 #define _IN_ADDR_T_DECLARED 67 #endif 68 69 #ifndef _IN_PORT_T_DECLARED 70 typedef uint16_t in_port_t; 71 #define _IN_PORT_T_DECLARED 72 #endif 73 74 #ifndef _SA_FAMILY_T_DECLARED 75 typedef __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 81 struct in_addr { 82 in_addr_t s_addr; 83 }; 84 #define _STRUCT_IN_ADDR_DECLARED 85 #endif 86 87 #ifndef _SOCKLEN_T_DECLARED 88 typedef __socklen_t socklen_t; 89 #define _SOCKLEN_T_DECLARED 90 #endif 91 92 #include <sys/_sockaddr_storage.h> 93 94 /* Socket address, internet style. */ 95 struct sockaddr_in { 96 uint8_t sin_len; 97 sa_family_t sin_family; 98 in_port_t sin_port; 99 struct in_addr sin_addr; 100 char sin_zero[8]; 101 }; 102 103 #if !defined(_KERNEL) && __BSD_VISIBLE 104 105 #ifndef _BYTEORDER_PROTOTYPED 106 #define _BYTEORDER_PROTOTYPED 107 __BEGIN_DECLS 108 uint32_t htonl(uint32_t); 109 uint16_t htons(uint16_t); 110 uint32_t ntohl(uint32_t); 111 uint16_t ntohs(uint16_t); 112 __END_DECLS 113 #endif 114 115 #ifndef _BYTEORDER_FUNC_DEFINED 116 #define _BYTEORDER_FUNC_DEFINED 117 #define htonl(x) __htonl(x) 118 #define htons(x) __htons(x) 119 #define ntohl(x) __ntohl(x) 120 #define ntohs(x) __ntohs(x) 121 #endif 122 123 #endif /* !_KERNEL && __BSD_VISIBLE */ 124 125 #if __POSIX_VISIBLE >= 200112 126 #define IPPROTO_IPV6 41 /* IP6 header */ 127 #define IPPROTO_RAW 255 /* raw IP packet */ 128 #define INET_ADDRSTRLEN 16 129 #endif 130 131 #if __BSD_VISIBLE 132 /* 133 * Constants and structures defined by the internet system, 134 * Per RFC 790, September 1981, and numerous additions. 135 */ 136 137 /* 138 * Protocols (RFC 1700) 139 */ 140 #define IPPROTO_HOPOPTS 0 /* IP6 hop-by-hop options */ 141 #define IPPROTO_IGMP 2 /* group mgmt protocol */ 142 #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 143 #define IPPROTO_IPV4 4 /* IPv4 encapsulation */ 144 #define IPPROTO_IPIP IPPROTO_IPV4 /* for compatibility */ 145 #define IPPROTO_ST 7 /* Stream protocol II */ 146 #define IPPROTO_EGP 8 /* exterior gateway protocol */ 147 #define IPPROTO_PIGP 9 /* private interior gateway */ 148 #define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */ 149 #define IPPROTO_NVPII 11 /* network voice protocol*/ 150 #define IPPROTO_PUP 12 /* pup */ 151 #define IPPROTO_ARGUS 13 /* Argus */ 152 #define IPPROTO_EMCON 14 /* EMCON */ 153 #define IPPROTO_XNET 15 /* Cross Net Debugger */ 154 #define IPPROTO_CHAOS 16 /* Chaos*/ 155 #define IPPROTO_MUX 18 /* Multiplexing */ 156 #define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */ 157 #define IPPROTO_HMP 20 /* Host Monitoring */ 158 #define IPPROTO_PRM 21 /* Packet Radio Measurement */ 159 #define IPPROTO_IDP 22 /* xns idp */ 160 #define IPPROTO_TRUNK1 23 /* Trunk-1 */ 161 #define IPPROTO_TRUNK2 24 /* Trunk-2 */ 162 #define IPPROTO_LEAF1 25 /* Leaf-1 */ 163 #define IPPROTO_LEAF2 26 /* Leaf-2 */ 164 #define IPPROTO_RDP 27 /* Reliable Data */ 165 #define IPPROTO_IRTP 28 /* Reliable Transaction */ 166 #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 167 #define IPPROTO_BLT 30 /* Bulk Data Transfer */ 168 #define IPPROTO_NSP 31 /* Network Services */ 169 #define IPPROTO_INP 32 /* Merit Internodal */ 170 #define IPPROTO_SEP 33 /* Sequential Exchange */ 171 #define IPPROTO_3PC 34 /* Third Party Connect */ 172 #define IPPROTO_IDPR 35 /* InterDomain Policy Routing */ 173 #define IPPROTO_XTP 36 /* XTP */ 174 #define IPPROTO_DDP 37 /* Datagram Delivery */ 175 #define IPPROTO_CMTP 38 /* Control Message Transport */ 176 #define IPPROTO_TPXX 39 /* TP++ Transport */ 177 #define IPPROTO_IL 40 /* IL transport protocol */ 178 #define IPPROTO_SDRP 42 /* Source Demand Routing */ 179 #define IPPROTO_ROUTING 43 /* IP6 routing header */ 180 #define IPPROTO_FRAGMENT 44 /* IP6 fragmentation header */ 181 #define IPPROTO_IDRP 45 /* InterDomain Routing*/ 182 #define IPPROTO_RSVP 46 /* resource reservation */ 183 #define IPPROTO_GRE 47 /* General Routing Encap. */ 184 #define IPPROTO_MHRP 48 /* Mobile Host Routing */ 185 #define IPPROTO_BHA 49 /* BHA */ 186 #define IPPROTO_ESP 50 /* IP6 Encap Sec. Payload */ 187 #define IPPROTO_AH 51 /* IP6 Auth Header */ 188 #define IPPROTO_INLSP 52 /* Integ. Net Layer Security */ 189 #define IPPROTO_SWIPE 53 /* IP with encryption */ 190 #define IPPROTO_NHRP 54 /* Next Hop Resolution */ 191 #define IPPROTO_MOBILE 55 /* IP Mobility */ 192 #define IPPROTO_TLSP 56 /* Transport Layer Security */ 193 #define IPPROTO_SKIP 57 /* SKIP */ 194 #define IPPROTO_ICMPV6 58 /* ICMP6 */ 195 #define IPPROTO_NONE 59 /* IP6 no next header */ 196 #define IPPROTO_DSTOPTS 60 /* IP6 destination option */ 197 #define IPPROTO_AHIP 61 /* any host internal protocol */ 198 #define IPPROTO_CFTP 62 /* CFTP */ 199 #define IPPROTO_HELLO 63 /* "hello" routing protocol */ 200 #define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */ 201 #define IPPROTO_KRYPTOLAN 65 /* Kryptolan */ 202 #define IPPROTO_RVD 66 /* Remote Virtual Disk */ 203 #define IPPROTO_IPPC 67 /* Pluribus Packet Core */ 204 #define IPPROTO_ADFS 68 /* Any distributed FS */ 205 #define IPPROTO_SATMON 69 /* Satnet Monitoring */ 206 #define IPPROTO_VISA 70 /* VISA Protocol */ 207 #define IPPROTO_IPCV 71 /* Packet Core Utility */ 208 #define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */ 209 #define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */ 210 #define IPPROTO_WSN 74 /* Wang Span Network */ 211 #define IPPROTO_PVP 75 /* Packet Video Protocol */ 212 #define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */ 213 #define IPPROTO_ND 77 /* Sun net disk proto (temp.) */ 214 #define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */ 215 #define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */ 216 #define IPPROTO_EON 80 /* ISO cnlp */ 217 #define IPPROTO_VMTP 81 /* VMTP */ 218 #define IPPROTO_SVMTP 82 /* Secure VMTP */ 219 #define IPPROTO_VINES 83 /* Banyon VINES */ 220 #define IPPROTO_TTP 84 /* TTP */ 221 #define IPPROTO_IGP 85 /* NSFNET-IGP */ 222 #define IPPROTO_DGP 86 /* dissimilar gateway prot. */ 223 #define IPPROTO_TCF 87 /* TCF */ 224 #define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */ 225 #define IPPROTO_OSPFIGP 89 /* OSPFIGP */ 226 #define IPPROTO_SRPC 90 /* Strite RPC protocol */ 227 #define IPPROTO_LARP 91 /* Locus Address Resoloution */ 228 #define IPPROTO_MTP 92 /* Multicast Transport */ 229 #define IPPROTO_AX25 93 /* AX.25 Frames */ 230 #define IPPROTO_IPEIP 94 /* IP encapsulated in IP */ 231 #define IPPROTO_MICP 95 /* Mobile Int.ing control */ 232 #define IPPROTO_SCCSP 96 /* Semaphore Comm. security */ 233 #define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */ 234 #define IPPROTO_ENCAP 98 /* encapsulation header */ 235 #define IPPROTO_APES 99 /* any private encr. scheme */ 236 #define IPPROTO_GMTP 100 /* GMTP*/ 237 #define IPPROTO_IPCOMP 108 /* payload compression (IPComp) */ 238 #define IPPROTO_SCTP 132 /* SCTP */ 239 #define IPPROTO_MH 135 /* IPv6 Mobility Header */ 240 /* 101-254: Partly Unassigned */ 241 #define IPPROTO_PIM 103 /* Protocol Independent Mcast */ 242 #define IPPROTO_CARP 112 /* CARP */ 243 #define IPPROTO_PGM 113 /* PGM */ 244 #define IPPROTO_MPLS 137 /* MPLS-in-IP */ 245 #define IPPROTO_PFSYNC 240 /* PFSYNC */ 246 /* 255: Reserved */ 247 /* BSD Private, local use, namespace incursion, no longer used */ 248 #define IPPROTO_OLD_DIVERT 254 /* OLD divert pseudo-proto */ 249 #define IPPROTO_MAX 256 250 251 /* last return value of *_input(), meaning "all job for this pkt is done". */ 252 #define IPPROTO_DONE 257 253 254 /* Only used internally, so can be outside the range of valid IP protocols. */ 255 #define IPPROTO_DIVERT 258 /* divert pseudo-protocol */ 256 #define IPPROTO_SEND 259 /* SeND pseudo-protocol */ 257 258 /* 259 * Defined to avoid confusion. The master value is defined by 260 * PROTO_SPACER in sys/protosw.h. 261 */ 262 #define IPPROTO_SPACER 32767 /* spacer for loadable protos */ 263 264 /* 265 * Local port number conventions: 266 * 267 * When a user does a bind(2) or connect(2) with a port number of zero, 268 * a non-conflicting local port address is chosen. 269 * The default range is IPPORT_HIFIRSTAUTO through 270 * IPPORT_HILASTAUTO, although that is settable by sysctl. 271 * 272 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 273 * default assignment range. 274 * 275 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 276 * 277 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers 278 * into the "high" range. These are reserved for client outbound connections 279 * which do not want to be filtered by any firewalls. 280 * 281 * The value IP_PORTRANGE_LOW changes the range to the "low" are 282 * that is (by convention) restricted to privileged processes. This 283 * convention is based on "vouchsafe" principles only. It is only secure 284 * if you trust the remote host to restrict these ports. 285 * 286 * The default range of ports and the high range can be changed by 287 * sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto) 288 * 289 * Changing those values has bad security implications if you are 290 * using a stateless firewall that is allowing packets outside of that 291 * range in order to allow transparent outgoing connections. 292 * 293 * Such a firewall configuration will generally depend on the use of these 294 * default values. If you change them, you may find your Security 295 * Administrator looking for you with a heavy object. 296 * 297 * For a slightly more orthodox text view on this: 298 * 299 * ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers 300 * 301 * port numbers are divided into three ranges: 302 * 303 * 0 - 1023 Well Known Ports 304 * 1024 - 49151 Registered Ports 305 * 49152 - 65535 Dynamic and/or Private Ports 306 * 307 */ 308 309 /* 310 * Ports < IPPORT_RESERVED are reserved for 311 * privileged processes (e.g. root). (IP_PORTRANGE_LOW) 312 */ 313 #define IPPORT_RESERVED 1024 314 315 /* 316 * Default local port range, used by IP_PORTRANGE_DEFAULT 317 */ 318 #define IPPORT_EPHEMERALFIRST 10000 319 #define IPPORT_EPHEMERALLAST 65535 320 321 /* 322 * Dynamic port range, used by IP_PORTRANGE_HIGH. 323 */ 324 #define IPPORT_HIFIRSTAUTO 49152 325 #define IPPORT_HILASTAUTO 65535 326 327 /* 328 * Scanning for a free reserved port return a value below IPPORT_RESERVED, 329 * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was 330 * 512, but that conflicts with some well-known-services that firewalls may 331 * have a fit if we use. 332 */ 333 #define IPPORT_RESERVEDSTART 600 334 335 #define IPPORT_MAX 65535 336 337 /* 338 * Definitions of bits in internet address integers. 339 * On subnets, the decomposition of addresses to host and net parts 340 * is done according to subnet mask, not the masks here. 341 */ 342 #define IN_CLASSA(i) (((u_int32_t)(i) & 0x80000000) == 0) 343 #define IN_CLASSA_NET 0xff000000 344 #define IN_CLASSA_NSHIFT 24 345 #define IN_CLASSA_HOST 0x00ffffff 346 #define IN_CLASSA_MAX 128 347 348 #define IN_CLASSB(i) (((u_int32_t)(i) & 0xc0000000) == 0x80000000) 349 #define IN_CLASSB_NET 0xffff0000 350 #define IN_CLASSB_NSHIFT 16 351 #define IN_CLASSB_HOST 0x0000ffff 352 #define IN_CLASSB_MAX 65536 353 354 #define IN_CLASSC(i) (((u_int32_t)(i) & 0xe0000000) == 0xc0000000) 355 #define IN_CLASSC_NET 0xffffff00 356 #define IN_CLASSC_NSHIFT 8 357 #define IN_CLASSC_HOST 0x000000ff 358 359 #define IN_CLASSD(i) (((u_int32_t)(i) & 0xf0000000) == 0xe0000000) 360 #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ 361 #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ 362 #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ 363 #define IN_MULTICAST(i) IN_CLASSD(i) 364 365 #define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 366 #define IN_BADCLASS(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 367 368 #define IN_LINKLOCAL(i) (((u_int32_t)(i) & 0xffff0000) == 0xa9fe0000) 369 #define IN_LOOPBACK(i) (((u_int32_t)(i) & 0xff000000) == 0x7f000000) 370 #define IN_ZERONET(i) (((u_int32_t)(i) & 0xff000000) == 0) 371 372 #define IN_PRIVATE(i) ((((u_int32_t)(i) & 0xff000000) == 0x0a000000) || \ 373 (((u_int32_t)(i) & 0xfff00000) == 0xac100000) || \ 374 (((u_int32_t)(i) & 0xffff0000) == 0xc0a80000)) 375 376 #define IN_LOCAL_GROUP(i) (((u_int32_t)(i) & 0xffffff00) == 0xe0000000) 377 378 #define IN_ANY_LOCAL(i) (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i)) 379 380 #define INADDR_LOOPBACK (u_int32_t)0x7f000001 381 #ifndef _KERNEL 382 #define INADDR_NONE 0xffffffff /* -1 return */ 383 #endif 384 385 #define INADDR_UNSPEC_GROUP (u_int32_t)0xe0000000 /* 224.0.0.0 */ 386 #define INADDR_ALLHOSTS_GROUP (u_int32_t)0xe0000001 /* 224.0.0.1 */ 387 #define INADDR_ALLRTRS_GROUP (u_int32_t)0xe0000002 /* 224.0.0.2 */ 388 #define INADDR_ALLRPTS_GROUP (u_int32_t)0xe0000016 /* 224.0.0.22, IGMPv3 */ 389 #define INADDR_CARP_GROUP (u_int32_t)0xe0000012 /* 224.0.0.18 */ 390 #define INADDR_PFSYNC_GROUP (u_int32_t)0xe00000f0 /* 224.0.0.240 */ 391 #define INADDR_ALLMDNS_GROUP (u_int32_t)0xe00000fb /* 224.0.0.251 */ 392 #define INADDR_MAX_LOCAL_GROUP (u_int32_t)0xe00000ff /* 224.0.0.255 */ 393 394 #define IN_LOOPBACKNET 127 /* official! */ 395 396 #define IN_RFC3021_MASK (u_int32_t)0xfffffffe 397 398 /* 399 * Options for use with [gs]etsockopt at the IP level. 400 * First word of comment is data type; bool is stored in int. 401 */ 402 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 403 #define IP_HDRINCL 2 /* int; header is included with data */ 404 #define IP_TOS 3 /* int; IP type of service and preced. */ 405 #define IP_TTL 4 /* int; IP time to live */ 406 #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 407 #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 408 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 409 #define IP_SENDSRCADDR IP_RECVDSTADDR /* cmsg_type to set src addr */ 410 #define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 411 #define IP_MULTICAST_IF 9 /* struct in_addr *or* struct ip_mreqn; 412 * set/get IP multicast i/f */ 413 #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 414 #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 415 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 416 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 417 #define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ 418 #define IP_RSVP_ON 15 /* enable RSVP in kernel */ 419 #define IP_RSVP_OFF 16 /* disable RSVP in kernel */ 420 #define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ 421 #define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ 422 #define IP_PORTRANGE 19 /* int; range to choose for unspec port */ 423 #define IP_RECVIF 20 /* bool; receive reception if w/dgram */ 424 /* for IPSEC */ 425 #define IP_IPSEC_POLICY 21 /* int; set/get security policy */ 426 #define IP_FAITH 22 /* bool; accept FAITH'ed connections */ 427 428 #define IP_ONESBCAST 23 /* bool: send all-ones broadcast */ 429 #define IP_BINDANY 24 /* bool: allow bind to any address */ 430 431 /* 432 * Options for controlling the firewall and dummynet. 433 * Historical options (from 40 to 64) will eventually be 434 * replaced by only two options, IP_FW3 and IP_DUMMYNET3. 435 */ 436 #define IP_FW_TABLE_ADD 40 /* add entry */ 437 #define IP_FW_TABLE_DEL 41 /* delete entry */ 438 #define IP_FW_TABLE_FLUSH 42 /* flush table */ 439 #define IP_FW_TABLE_GETSIZE 43 /* get table size */ 440 #define IP_FW_TABLE_LIST 44 /* list table contents */ 441 442 #define IP_FW3 48 /* generic ipfw v.3 sockopts */ 443 #define IP_DUMMYNET3 49 /* generic dummynet v.3 sockopts */ 444 445 #define IP_FW_ADD 50 /* add a firewall rule to chain */ 446 #define IP_FW_DEL 51 /* delete a firewall rule from chain */ 447 #define IP_FW_FLUSH 52 /* flush firewall rule chain */ 448 #define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */ 449 #define IP_FW_GET 54 /* get entire firewall rule chain */ 450 #define IP_FW_RESETLOG 55 /* reset logging counters */ 451 452 #define IP_FW_NAT_CFG 56 /* add/config a nat rule */ 453 #define IP_FW_NAT_DEL 57 /* delete a nat rule */ 454 #define IP_FW_NAT_GET_CONFIG 58 /* get configuration of a nat rule */ 455 #define IP_FW_NAT_GET_LOG 59 /* get log of a nat rule */ 456 457 #define IP_DUMMYNET_CONFIGURE 60 /* add/configure a dummynet pipe */ 458 #define IP_DUMMYNET_DEL 61 /* delete a dummynet pipe from chain */ 459 #define IP_DUMMYNET_FLUSH 62 /* flush dummynet */ 460 #define IP_DUMMYNET_GET 64 /* get entire dummynet pipes */ 461 462 #define IP_RECVTTL 65 /* bool; receive IP TTL w/dgram */ 463 #define IP_MINTTL 66 /* minimum TTL for packet or drop */ 464 #define IP_DONTFRAG 67 /* don't fragment packet */ 465 #define IP_RECVTOS 68 /* bool; receive IP TOS w/dgram */ 466 467 /* IPv4 Source Filter Multicast API [RFC3678] */ 468 #define IP_ADD_SOURCE_MEMBERSHIP 70 /* join a source-specific group */ 469 #define IP_DROP_SOURCE_MEMBERSHIP 71 /* drop a single source */ 470 #define IP_BLOCK_SOURCE 72 /* block a source */ 471 #define IP_UNBLOCK_SOURCE 73 /* unblock a source */ 472 473 /* The following option is private; do not use it from user applications. */ 474 #define IP_MSFILTER 74 /* set/get filter list */ 475 476 /* Protocol Independent Multicast API [RFC3678] */ 477 #define MCAST_JOIN_GROUP 80 /* join an any-source group */ 478 #define MCAST_LEAVE_GROUP 81 /* leave all sources for group */ 479 #define MCAST_JOIN_SOURCE_GROUP 82 /* join a source-specific group */ 480 #define MCAST_LEAVE_SOURCE_GROUP 83 /* leave a single source */ 481 #define MCAST_BLOCK_SOURCE 84 /* block a source */ 482 #define MCAST_UNBLOCK_SOURCE 85 /* unblock a source */ 483 484 /* 485 * Defaults and limits for options 486 */ 487 #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 488 #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 489 490 /* 491 * The imo_membership vector for each socket is now dynamically allocated at 492 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized 493 * according to a power-of-two increment. 494 */ 495 #define IP_MIN_MEMBERSHIPS 31 496 #define IP_MAX_MEMBERSHIPS 4095 497 #define IP_MAX_SOURCE_FILTER 1024 /* XXX to be unused */ 498 499 /* 500 * Default resource limits for IPv4 multicast source filtering. 501 * These may be modified by sysctl. 502 */ 503 #define IP_MAX_GROUP_SRC_FILTER 512 /* sources per group */ 504 #define IP_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */ 505 #define IP_MAX_SOCK_MUTE_FILTER 128 /* XXX no longer used */ 506 507 /* 508 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 509 */ 510 struct ip_mreq { 511 struct in_addr imr_multiaddr; /* IP multicast address of group */ 512 struct in_addr imr_interface; /* local IP address of interface */ 513 }; 514 515 /* 516 * Modified argument structure for IP_MULTICAST_IF, obtained from Linux. 517 * This is used to specify an interface index for multicast sends, as 518 * the IPv4 legacy APIs do not support this (unless IP_SENDIF is available). 519 */ 520 struct ip_mreqn { 521 struct in_addr imr_multiaddr; /* IP multicast address of group */ 522 struct in_addr imr_address; /* local IP address of interface */ 523 int imr_ifindex; /* Interface index; cast to uint32_t */ 524 }; 525 526 /* 527 * Argument structure for IPv4 Multicast Source Filter APIs. [RFC3678] 528 */ 529 struct ip_mreq_source { 530 struct in_addr imr_multiaddr; /* IP multicast address of group */ 531 struct in_addr imr_sourceaddr; /* IP address of source */ 532 struct in_addr imr_interface; /* local IP address of interface */ 533 }; 534 535 /* 536 * Argument structures for Protocol-Independent Multicast Source 537 * Filter APIs. [RFC3678] 538 */ 539 struct group_req { 540 uint32_t gr_interface; /* interface index */ 541 struct sockaddr_storage gr_group; /* group address */ 542 }; 543 544 struct group_source_req { 545 uint32_t gsr_interface; /* interface index */ 546 struct sockaddr_storage gsr_group; /* group address */ 547 struct sockaddr_storage gsr_source; /* source address */ 548 }; 549 550 #ifndef __MSFILTERREQ_DEFINED 551 #define __MSFILTERREQ_DEFINED 552 /* 553 * The following structure is private; do not use it from user applications. 554 * It is used to communicate IP_MSFILTER/IPV6_MSFILTER information between 555 * the RFC 3678 libc functions and the kernel. 556 */ 557 struct __msfilterreq { 558 uint32_t msfr_ifindex; /* interface index */ 559 uint32_t msfr_fmode; /* filter mode for group */ 560 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 561 struct sockaddr_storage msfr_group; /* group address */ 562 struct sockaddr_storage *msfr_srcs; /* pointer to the first member 563 * of a contiguous array of 564 * sources to filter in full. 565 */ 566 }; 567 #endif 568 569 struct sockaddr; 570 571 /* 572 * Advanced (Full-state) APIs [RFC3678] 573 * The RFC specifies uint_t for the 6th argument to [sg]etsourcefilter(). 574 * We use uint32_t here to be consistent. 575 */ 576 int setipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t, 577 uint32_t, struct in_addr *); 578 int getipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t *, 579 uint32_t *, struct in_addr *); 580 int setsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 581 uint32_t, uint32_t, struct sockaddr_storage *); 582 int getsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 583 uint32_t *, uint32_t *, struct sockaddr_storage *); 584 585 /* 586 * Filter modes; also used to represent per-socket filter mode internally. 587 */ 588 #define MCAST_UNDEFINED 0 /* fmode: not yet defined */ 589 #define MCAST_INCLUDE 1 /* fmode: include these source(s) */ 590 #define MCAST_EXCLUDE 2 /* fmode: exclude these source(s) */ 591 592 /* 593 * Argument for IP_PORTRANGE: 594 * - which range to search when port is unspecified at bind() or connect() 595 */ 596 #define IP_PORTRANGE_DEFAULT 0 /* default range */ 597 #define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 598 #define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 599 600 /* 601 * Definitions for inet sysctl operations. 602 * 603 * Third level is protocol number. 604 * Fourth level is desired variable within that protocol. 605 */ 606 #define IPPROTO_MAXID (IPPROTO_AH + 1) /* don't list to IPPROTO_MAX */ 607 608 #define CTL_IPPROTO_NAMES { \ 609 { "ip", CTLTYPE_NODE }, \ 610 { "icmp", CTLTYPE_NODE }, \ 611 { "igmp", CTLTYPE_NODE }, \ 612 { "ggp", CTLTYPE_NODE }, \ 613 { 0, 0 }, \ 614 { 0, 0 }, \ 615 { "tcp", CTLTYPE_NODE }, \ 616 { 0, 0 }, \ 617 { "egp", CTLTYPE_NODE }, \ 618 { 0, 0 }, \ 619 { 0, 0 }, \ 620 { 0, 0 }, \ 621 { "pup", CTLTYPE_NODE }, \ 622 { 0, 0 }, \ 623 { 0, 0 }, \ 624 { 0, 0 }, \ 625 { 0, 0 }, \ 626 { "udp", CTLTYPE_NODE }, \ 627 { 0, 0 }, \ 628 { 0, 0 }, \ 629 { 0, 0 }, \ 630 { 0, 0 }, \ 631 { "idp", CTLTYPE_NODE }, \ 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 { 0, 0 }, \ 655 { 0, 0 }, \ 656 { 0, 0 }, \ 657 { 0, 0 }, \ 658 { 0, 0 }, \ 659 { 0, 0 }, \ 660 { "ipsec", CTLTYPE_NODE }, \ 661 { 0, 0 }, \ 662 { 0, 0 }, \ 663 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 668 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 669 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 670 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 671 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 672 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 673 { 0, 0 }, \ 674 { 0, 0 }, \ 675 { 0, 0 }, \ 676 { "pim", CTLTYPE_NODE }, \ 677 } 678 679 /* 680 * Names for IP sysctl objects 681 */ 682 #define IPCTL_FORWARDING 1 /* act as router */ 683 #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ 684 #define IPCTL_DEFTTL 3 /* default TTL */ 685 #ifdef notyet 686 #define IPCTL_DEFMTU 4 /* default MTU */ 687 #endif 688 #define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ 689 #define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ 690 #define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ 691 #define IPCTL_SOURCEROUTE 8 /* may perform source routes */ 692 #define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ 693 #define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ 694 #define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ 695 #define IPCTL_STATS 12 /* ipstat structure */ 696 #define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */ 697 #define IPCTL_FASTFORWARDING 14 /* use fast IP forwarding code */ 698 #define IPCTL_KEEPFAITH 15 /* FAITH IPv4->IPv6 translater ctl */ 699 #define IPCTL_GIF_TTL 16 /* default TTL for gif encap packet */ 700 #define IPCTL_MAXID 17 701 702 #define IPCTL_NAMES { \ 703 { 0, 0 }, \ 704 { "forwarding", CTLTYPE_INT }, \ 705 { "redirect", CTLTYPE_INT }, \ 706 { "ttl", CTLTYPE_INT }, \ 707 { "mtu", CTLTYPE_INT }, \ 708 { "rtexpire", CTLTYPE_INT }, \ 709 { "rtminexpire", CTLTYPE_INT }, \ 710 { "rtmaxcache", CTLTYPE_INT }, \ 711 { "sourceroute", CTLTYPE_INT }, \ 712 { "directed-broadcast", CTLTYPE_INT }, \ 713 { "intr-queue-maxlen", CTLTYPE_INT }, \ 714 { "intr-queue-drops", CTLTYPE_INT }, \ 715 { "stats", CTLTYPE_STRUCT }, \ 716 { "accept_sourceroute", CTLTYPE_INT }, \ 717 { "fastforwarding", CTLTYPE_INT }, \ 718 } 719 720 #endif /* __BSD_VISIBLE */ 721 722 #ifdef _KERNEL 723 724 struct ifnet; struct mbuf; /* forward declarations for Standard C */ 725 726 int in_broadcast(struct in_addr, struct ifnet *); 727 int in_canforward(struct in_addr); 728 int in_localaddr(struct in_addr); 729 int in_localip(struct in_addr); 730 int inet_aton(const char *, struct in_addr *); /* in libkern */ 731 char *inet_ntoa(struct in_addr); /* in libkern */ 732 char *inet_ntoa_r(struct in_addr ina, char *buf); /* in libkern */ 733 char *inet_ntop(int, const void *, char *, socklen_t); /* in libkern */ 734 int inet_pton(int af, const char *, void *); /* in libkern */ 735 void in_ifdetach(struct ifnet *); 736 737 #define in_hosteq(s, t) ((s).s_addr == (t).s_addr) 738 #define in_nullhost(x) ((x).s_addr == INADDR_ANY) 739 #define in_allhosts(x) ((x).s_addr == htonl(INADDR_ALLHOSTS_GROUP)) 740 741 #define satosin(sa) ((struct sockaddr_in *)(sa)) 742 #define sintosa(sin) ((struct sockaddr *)(sin)) 743 #define ifatoia(ifa) ((struct in_ifaddr *)(ifa)) 744 #endif /* _KERNEL */ 745 746 /* INET6 stuff */ 747 #if __POSIX_VISIBLE >= 200112 748 #define __KAME_NETINET_IN_H_INCLUDED_ 749 #include <netinet6/in6.h> 750 #undef __KAME_NETINET_IN_H_INCLUDED_ 751 #endif 752 753 #endif /* !_NETINET_IN_H_*/ 754