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_RAW 255 /* raw IP packet */ 127 #define INET_ADDRSTRLEN 16 128 #endif 129 130 #if __BSD_VISIBLE 131 /* 132 * Constants and structures defined by the internet system, 133 * Per RFC 790, September 1981, and numerous additions. 134 */ 135 136 /* 137 * Protocols (RFC 1700) 138 */ 139 #define IPPROTO_HOPOPTS 0 /* IP6 hop-by-hop options */ 140 #define IPPROTO_IGMP 2 /* group mgmt protocol */ 141 #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 142 #define IPPROTO_IPV4 4 /* IPv4 encapsulation */ 143 #define IPPROTO_IPIP IPPROTO_IPV4 /* for compatibility */ 144 #define IPPROTO_ST 7 /* Stream protocol II */ 145 #define IPPROTO_EGP 8 /* exterior gateway protocol */ 146 #define IPPROTO_PIGP 9 /* private interior gateway */ 147 #define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */ 148 #define IPPROTO_NVPII 11 /* network voice protocol*/ 149 #define IPPROTO_PUP 12 /* pup */ 150 #define IPPROTO_ARGUS 13 /* Argus */ 151 #define IPPROTO_EMCON 14 /* EMCON */ 152 #define IPPROTO_XNET 15 /* Cross Net Debugger */ 153 #define IPPROTO_CHAOS 16 /* Chaos*/ 154 #define IPPROTO_MUX 18 /* Multiplexing */ 155 #define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */ 156 #define IPPROTO_HMP 20 /* Host Monitoring */ 157 #define IPPROTO_PRM 21 /* Packet Radio Measurement */ 158 #define IPPROTO_IDP 22 /* xns idp */ 159 #define IPPROTO_TRUNK1 23 /* Trunk-1 */ 160 #define IPPROTO_TRUNK2 24 /* Trunk-2 */ 161 #define IPPROTO_LEAF1 25 /* Leaf-1 */ 162 #define IPPROTO_LEAF2 26 /* Leaf-2 */ 163 #define IPPROTO_RDP 27 /* Reliable Data */ 164 #define IPPROTO_IRTP 28 /* Reliable Transaction */ 165 #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 166 #define IPPROTO_BLT 30 /* Bulk Data Transfer */ 167 #define IPPROTO_NSP 31 /* Network Services */ 168 #define IPPROTO_INP 32 /* Merit Internodal */ 169 #define IPPROTO_SEP 33 /* Sequential Exchange */ 170 #define IPPROTO_3PC 34 /* Third Party Connect */ 171 #define IPPROTO_IDPR 35 /* InterDomain Policy Routing */ 172 #define IPPROTO_XTP 36 /* XTP */ 173 #define IPPROTO_DDP 37 /* Datagram Delivery */ 174 #define IPPROTO_CMTP 38 /* Control Message Transport */ 175 #define IPPROTO_TPXX 39 /* TP++ Transport */ 176 #define IPPROTO_IL 40 /* IL transport protocol */ 177 #define IPPROTO_IPV6 41 /* IP6 header */ 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_PFSYNC 240 /* PFSYNC */ 245 /* 255: Reserved */ 246 /* BSD Private, local use, namespace incursion, no longer used */ 247 #define IPPROTO_OLD_DIVERT 254 /* OLD divert pseudo-proto */ 248 #define IPPROTO_MAX 256 249 250 /* last return value of *_input(), meaning "all job for this pkt is done". */ 251 #define IPPROTO_DONE 257 252 253 /* Only used internally, so can be outside the range of valid IP protocols. */ 254 #define IPPROTO_DIVERT 258 /* divert pseudo-protocol */ 255 #define IPPROTO_SEND 259 /* SeND pseudo-protocol */ 256 257 /* 258 * Defined to avoid confusion. The master value is defined by 259 * PROTO_SPACER in sys/protosw.h. 260 */ 261 #define IPPROTO_SPACER 32767 /* spacer for loadable protos */ 262 263 /* 264 * Local port number conventions: 265 * 266 * When a user does a bind(2) or connect(2) with a port number of zero, 267 * a non-conflicting local port address is chosen. 268 * The default range is IPPORT_HIFIRSTAUTO through 269 * IPPORT_HILASTAUTO, although that is settable by sysctl. 270 * 271 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 272 * default assignment range. 273 * 274 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 275 * 276 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers 277 * into the "high" range. These are reserved for client outbound connections 278 * which do not want to be filtered by any firewalls. 279 * 280 * The value IP_PORTRANGE_LOW changes the range to the "low" are 281 * that is (by convention) restricted to privileged processes. This 282 * convention is based on "vouchsafe" principles only. It is only secure 283 * if you trust the remote host to restrict these ports. 284 * 285 * The default range of ports and the high range can be changed by 286 * sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto) 287 * 288 * Changing those values has bad security implications if you are 289 * using a stateless firewall that is allowing packets outside of that 290 * range in order to allow transparent outgoing connections. 291 * 292 * Such a firewall configuration will generally depend on the use of these 293 * default values. If you change them, you may find your Security 294 * Administrator looking for you with a heavy object. 295 * 296 * For a slightly more orthodox text view on this: 297 * 298 * ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers 299 * 300 * port numbers are divided into three ranges: 301 * 302 * 0 - 1023 Well Known Ports 303 * 1024 - 49151 Registered Ports 304 * 49152 - 65535 Dynamic and/or Private Ports 305 * 306 */ 307 308 /* 309 * Ports < IPPORT_RESERVED are reserved for 310 * privileged processes (e.g. root). (IP_PORTRANGE_LOW) 311 */ 312 #define IPPORT_RESERVED 1024 313 314 /* 315 * Default local port range, used by IP_PORTRANGE_DEFAULT 316 */ 317 #define IPPORT_EPHEMERALFIRST 10000 318 #define IPPORT_EPHEMERALLAST 65535 319 320 /* 321 * Dynamic port range, used by IP_PORTRANGE_HIGH. 322 */ 323 #define IPPORT_HIFIRSTAUTO 49152 324 #define IPPORT_HILASTAUTO 65535 325 326 /* 327 * Scanning for a free reserved port return a value below IPPORT_RESERVED, 328 * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was 329 * 512, but that conflicts with some well-known-services that firewalls may 330 * have a fit if we use. 331 */ 332 #define IPPORT_RESERVEDSTART 600 333 334 #define IPPORT_MAX 65535 335 336 /* 337 * Definitions of bits in internet address integers. 338 * On subnets, the decomposition of addresses to host and net parts 339 * is done according to subnet mask, not the masks here. 340 */ 341 #define IN_CLASSA(i) (((u_int32_t)(i) & 0x80000000) == 0) 342 #define IN_CLASSA_NET 0xff000000 343 #define IN_CLASSA_NSHIFT 24 344 #define IN_CLASSA_HOST 0x00ffffff 345 #define IN_CLASSA_MAX 128 346 347 #define IN_CLASSB(i) (((u_int32_t)(i) & 0xc0000000) == 0x80000000) 348 #define IN_CLASSB_NET 0xffff0000 349 #define IN_CLASSB_NSHIFT 16 350 #define IN_CLASSB_HOST 0x0000ffff 351 #define IN_CLASSB_MAX 65536 352 353 #define IN_CLASSC(i) (((u_int32_t)(i) & 0xe0000000) == 0xc0000000) 354 #define IN_CLASSC_NET 0xffffff00 355 #define IN_CLASSC_NSHIFT 8 356 #define IN_CLASSC_HOST 0x000000ff 357 358 #define IN_CLASSD(i) (((u_int32_t)(i) & 0xf0000000) == 0xe0000000) 359 #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ 360 #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ 361 #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ 362 #define IN_MULTICAST(i) IN_CLASSD(i) 363 364 #define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 365 #define IN_BADCLASS(i) (((u_int32_t)(i) & 0xf0000000) == 0xf0000000) 366 367 #define IN_LINKLOCAL(i) (((u_int32_t)(i) & 0xffff0000) == 0xa9fe0000) 368 #define IN_LOOPBACK(i) (((u_int32_t)(i) & 0xff000000) == 0x7f000000) 369 #define IN_ZERONET(i) (((u_int32_t)(i) & 0xff000000) == 0) 370 371 #define IN_PRIVATE(i) ((((u_int32_t)(i) & 0xff000000) == 0x0a000000) || \ 372 (((u_int32_t)(i) & 0xfff00000) == 0xac100000) || \ 373 (((u_int32_t)(i) & 0xffff0000) == 0xc0a80000)) 374 375 #define IN_LOCAL_GROUP(i) (((u_int32_t)(i) & 0xffffff00) == 0xe0000000) 376 377 #define IN_ANY_LOCAL(i) (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i)) 378 379 #define INADDR_LOOPBACK (u_int32_t)0x7f000001 380 #ifndef _KERNEL 381 #define INADDR_NONE 0xffffffff /* -1 return */ 382 #endif 383 384 #define INADDR_UNSPEC_GROUP (u_int32_t)0xe0000000 /* 224.0.0.0 */ 385 #define INADDR_ALLHOSTS_GROUP (u_int32_t)0xe0000001 /* 224.0.0.1 */ 386 #define INADDR_ALLRTRS_GROUP (u_int32_t)0xe0000002 /* 224.0.0.2 */ 387 #define INADDR_ALLRPTS_GROUP (u_int32_t)0xe0000016 /* 224.0.0.22, IGMPv3 */ 388 #define INADDR_CARP_GROUP (u_int32_t)0xe0000012 /* 224.0.0.18 */ 389 #define INADDR_PFSYNC_GROUP (u_int32_t)0xe00000f0 /* 224.0.0.240 */ 390 #define INADDR_ALLMDNS_GROUP (u_int32_t)0xe00000fb /* 224.0.0.251 */ 391 #define INADDR_MAX_LOCAL_GROUP (u_int32_t)0xe00000ff /* 224.0.0.255 */ 392 393 #define IN_LOOPBACKNET 127 /* official! */ 394 395 /* 396 * Options for use with [gs]etsockopt at the IP level. 397 * First word of comment is data type; bool is stored in int. 398 */ 399 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 400 #define IP_HDRINCL 2 /* int; header is included with data */ 401 #define IP_TOS 3 /* int; IP type of service and preced. */ 402 #define IP_TTL 4 /* int; IP time to live */ 403 #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 404 #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 405 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 406 #define IP_SENDSRCADDR IP_RECVDSTADDR /* cmsg_type to set src addr */ 407 #define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 408 #define IP_MULTICAST_IF 9 /* struct in_addr *or* struct ip_mreqn; 409 * set/get IP multicast i/f */ 410 #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 411 #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 412 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 413 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 414 #define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ 415 #define IP_RSVP_ON 15 /* enable RSVP in kernel */ 416 #define IP_RSVP_OFF 16 /* disable RSVP in kernel */ 417 #define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ 418 #define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ 419 #define IP_PORTRANGE 19 /* int; range to choose for unspec port */ 420 #define IP_RECVIF 20 /* bool; receive reception if w/dgram */ 421 /* for IPSEC */ 422 #define IP_IPSEC_POLICY 21 /* int; set/get security policy */ 423 #define IP_FAITH 22 /* bool; accept FAITH'ed connections */ 424 425 #define IP_ONESBCAST 23 /* bool: send all-ones broadcast */ 426 #define IP_BINDANY 24 /* bool: allow bind to any address */ 427 428 /* 429 * Options for controlling the firewall and dummynet. 430 * Historical options (from 40 to 64) will eventually be 431 * replaced by only two options, IP_FW3 and IP_DUMMYNET3. 432 */ 433 #define IP_FW_TABLE_ADD 40 /* add entry */ 434 #define IP_FW_TABLE_DEL 41 /* delete entry */ 435 #define IP_FW_TABLE_FLUSH 42 /* flush table */ 436 #define IP_FW_TABLE_GETSIZE 43 /* get table size */ 437 #define IP_FW_TABLE_LIST 44 /* list table contents */ 438 439 #define IP_FW3 48 /* generic ipfw v.3 sockopts */ 440 #define IP_DUMMYNET3 49 /* generic dummynet v.3 sockopts */ 441 442 #define IP_FW_ADD 50 /* add a firewall rule to chain */ 443 #define IP_FW_DEL 51 /* delete a firewall rule from chain */ 444 #define IP_FW_FLUSH 52 /* flush firewall rule chain */ 445 #define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */ 446 #define IP_FW_GET 54 /* get entire firewall rule chain */ 447 #define IP_FW_RESETLOG 55 /* reset logging counters */ 448 449 #define IP_FW_NAT_CFG 56 /* add/config a nat rule */ 450 #define IP_FW_NAT_DEL 57 /* delete a nat rule */ 451 #define IP_FW_NAT_GET_CONFIG 58 /* get configuration of a nat rule */ 452 #define IP_FW_NAT_GET_LOG 59 /* get log of a nat rule */ 453 454 #define IP_DUMMYNET_CONFIGURE 60 /* add/configure a dummynet pipe */ 455 #define IP_DUMMYNET_DEL 61 /* delete a dummynet pipe from chain */ 456 #define IP_DUMMYNET_FLUSH 62 /* flush dummynet */ 457 #define IP_DUMMYNET_GET 64 /* get entire dummynet pipes */ 458 459 #define IP_RECVTTL 65 /* bool; receive IP TTL w/dgram */ 460 #define IP_MINTTL 66 /* minimum TTL for packet or drop */ 461 #define IP_DONTFRAG 67 /* don't fragment packet */ 462 463 /* IPv4 Source Filter Multicast API [RFC3678] */ 464 #define IP_ADD_SOURCE_MEMBERSHIP 70 /* join a source-specific group */ 465 #define IP_DROP_SOURCE_MEMBERSHIP 71 /* drop a single source */ 466 #define IP_BLOCK_SOURCE 72 /* block a source */ 467 #define IP_UNBLOCK_SOURCE 73 /* unblock a source */ 468 469 /* The following option is private; do not use it from user applications. */ 470 #define IP_MSFILTER 74 /* set/get filter list */ 471 472 /* Protocol Independent Multicast API [RFC3678] */ 473 #define MCAST_JOIN_GROUP 80 /* join an any-source group */ 474 #define MCAST_LEAVE_GROUP 81 /* leave all sources for group */ 475 #define MCAST_JOIN_SOURCE_GROUP 82 /* join a source-specific group */ 476 #define MCAST_LEAVE_SOURCE_GROUP 83 /* leave a single source */ 477 #define MCAST_BLOCK_SOURCE 84 /* block a source */ 478 #define MCAST_UNBLOCK_SOURCE 85 /* unblock a source */ 479 480 /* 481 * Defaults and limits for options 482 */ 483 #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 484 #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 485 486 /* 487 * The imo_membership vector for each socket is now dynamically allocated at 488 * run-time, bounded by USHRT_MAX, and is reallocated when needed, sized 489 * according to a power-of-two increment. 490 */ 491 #define IP_MIN_MEMBERSHIPS 31 492 #define IP_MAX_MEMBERSHIPS 4095 493 #define IP_MAX_SOURCE_FILTER 1024 /* XXX to be unused */ 494 495 /* 496 * Default resource limits for IPv4 multicast source filtering. 497 * These may be modified by sysctl. 498 */ 499 #define IP_MAX_GROUP_SRC_FILTER 512 /* sources per group */ 500 #define IP_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */ 501 #define IP_MAX_SOCK_MUTE_FILTER 128 /* XXX no longer used */ 502 503 /* 504 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 505 */ 506 struct ip_mreq { 507 struct in_addr imr_multiaddr; /* IP multicast address of group */ 508 struct in_addr imr_interface; /* local IP address of interface */ 509 }; 510 511 /* 512 * Modified argument structure for IP_MULTICAST_IF, obtained from Linux. 513 * This is used to specify an interface index for multicast sends, as 514 * the IPv4 legacy APIs do not support this (unless IP_SENDIF is available). 515 */ 516 struct ip_mreqn { 517 struct in_addr imr_multiaddr; /* IP multicast address of group */ 518 struct in_addr imr_address; /* local IP address of interface */ 519 int imr_ifindex; /* Interface index; cast to uint32_t */ 520 }; 521 522 /* 523 * Argument structure for IPv4 Multicast Source Filter APIs. [RFC3678] 524 */ 525 struct ip_mreq_source { 526 struct in_addr imr_multiaddr; /* IP multicast address of group */ 527 struct in_addr imr_sourceaddr; /* IP address of source */ 528 struct in_addr imr_interface; /* local IP address of interface */ 529 }; 530 531 /* 532 * Argument structures for Protocol-Independent Multicast Source 533 * Filter APIs. [RFC3678] 534 */ 535 struct group_req { 536 uint32_t gr_interface; /* interface index */ 537 struct sockaddr_storage gr_group; /* group address */ 538 }; 539 540 struct group_source_req { 541 uint32_t gsr_interface; /* interface index */ 542 struct sockaddr_storage gsr_group; /* group address */ 543 struct sockaddr_storage gsr_source; /* source address */ 544 }; 545 546 #ifndef __MSFILTERREQ_DEFINED 547 #define __MSFILTERREQ_DEFINED 548 /* 549 * The following structure is private; do not use it from user applications. 550 * It is used to communicate IP_MSFILTER/IPV6_MSFILTER information between 551 * the RFC 3678 libc functions and the kernel. 552 */ 553 struct __msfilterreq { 554 uint32_t msfr_ifindex; /* interface index */ 555 uint32_t msfr_fmode; /* filter mode for group */ 556 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 557 struct sockaddr_storage msfr_group; /* group address */ 558 struct sockaddr_storage *msfr_srcs; /* pointer to the first member 559 * of a contiguous array of 560 * sources to filter in full. 561 */ 562 }; 563 #endif 564 565 struct sockaddr; 566 567 /* 568 * Advanced (Full-state) APIs [RFC3678] 569 * The RFC specifies uint_t for the 6th argument to [sg]etsourcefilter(). 570 * We use uint32_t here to be consistent. 571 */ 572 int setipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t, 573 uint32_t, struct in_addr *); 574 int getipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t *, 575 uint32_t *, struct in_addr *); 576 int setsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 577 uint32_t, uint32_t, struct sockaddr_storage *); 578 int getsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 579 uint32_t *, uint32_t *, struct sockaddr_storage *); 580 581 /* 582 * Filter modes; also used to represent per-socket filter mode internally. 583 */ 584 #define MCAST_UNDEFINED 0 /* fmode: not yet defined */ 585 #define MCAST_INCLUDE 1 /* fmode: include these source(s) */ 586 #define MCAST_EXCLUDE 2 /* fmode: exclude these source(s) */ 587 588 /* 589 * Argument for IP_PORTRANGE: 590 * - which range to search when port is unspecified at bind() or connect() 591 */ 592 #define IP_PORTRANGE_DEFAULT 0 /* default range */ 593 #define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 594 #define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 595 596 /* 597 * Definitions for inet sysctl operations. 598 * 599 * Third level is protocol number. 600 * Fourth level is desired variable within that protocol. 601 */ 602 #define IPPROTO_MAXID (IPPROTO_AH + 1) /* don't list to IPPROTO_MAX */ 603 604 #define CTL_IPPROTO_NAMES { \ 605 { "ip", CTLTYPE_NODE }, \ 606 { "icmp", CTLTYPE_NODE }, \ 607 { "igmp", CTLTYPE_NODE }, \ 608 { "ggp", CTLTYPE_NODE }, \ 609 { 0, 0 }, \ 610 { 0, 0 }, \ 611 { "tcp", CTLTYPE_NODE }, \ 612 { 0, 0 }, \ 613 { "egp", CTLTYPE_NODE }, \ 614 { 0, 0 }, \ 615 { 0, 0 }, \ 616 { 0, 0 }, \ 617 { "pup", CTLTYPE_NODE }, \ 618 { 0, 0 }, \ 619 { 0, 0 }, \ 620 { 0, 0 }, \ 621 { 0, 0 }, \ 622 { "udp", CTLTYPE_NODE }, \ 623 { 0, 0 }, \ 624 { 0, 0 }, \ 625 { 0, 0 }, \ 626 { 0, 0 }, \ 627 { "idp", CTLTYPE_NODE }, \ 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 { 0, 0 }, \ 655 { 0, 0 }, \ 656 { "ipsec", CTLTYPE_NODE }, \ 657 { 0, 0 }, \ 658 { 0, 0 }, \ 659 { 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 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 668 { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \ 669 { 0, 0 }, \ 670 { 0, 0 }, \ 671 { 0, 0 }, \ 672 { "pim", CTLTYPE_NODE }, \ 673 } 674 675 /* 676 * Names for IP sysctl objects 677 */ 678 #define IPCTL_FORWARDING 1 /* act as router */ 679 #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ 680 #define IPCTL_DEFTTL 3 /* default TTL */ 681 #ifdef notyet 682 #define IPCTL_DEFMTU 4 /* default MTU */ 683 #endif 684 #define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ 685 #define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ 686 #define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ 687 #define IPCTL_SOURCEROUTE 8 /* may perform source routes */ 688 #define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ 689 #define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ 690 #define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ 691 #define IPCTL_STATS 12 /* ipstat structure */ 692 #define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */ 693 #define IPCTL_FASTFORWARDING 14 /* use fast IP forwarding code */ 694 #define IPCTL_KEEPFAITH 15 /* FAITH IPv4->IPv6 translater ctl */ 695 #define IPCTL_GIF_TTL 16 /* default TTL for gif encap packet */ 696 #define IPCTL_MAXID 17 697 698 #define IPCTL_NAMES { \ 699 { 0, 0 }, \ 700 { "forwarding", CTLTYPE_INT }, \ 701 { "redirect", CTLTYPE_INT }, \ 702 { "ttl", CTLTYPE_INT }, \ 703 { "mtu", CTLTYPE_INT }, \ 704 { "rtexpire", CTLTYPE_INT }, \ 705 { "rtminexpire", CTLTYPE_INT }, \ 706 { "rtmaxcache", CTLTYPE_INT }, \ 707 { "sourceroute", CTLTYPE_INT }, \ 708 { "directed-broadcast", CTLTYPE_INT }, \ 709 { "intr-queue-maxlen", CTLTYPE_INT }, \ 710 { "intr-queue-drops", CTLTYPE_INT }, \ 711 { "stats", CTLTYPE_STRUCT }, \ 712 { "accept_sourceroute", CTLTYPE_INT }, \ 713 { "fastforwarding", CTLTYPE_INT }, \ 714 } 715 716 #endif /* __BSD_VISIBLE */ 717 718 #ifdef _KERNEL 719 720 struct ifnet; struct mbuf; /* forward declarations for Standard C */ 721 722 int in_broadcast(struct in_addr, struct ifnet *); 723 int in_canforward(struct in_addr); 724 int in_localaddr(struct in_addr); 725 int in_localip(struct in_addr); 726 int inet_aton(const char *, struct in_addr *); /* in libkern */ 727 char *inet_ntoa(struct in_addr); /* in libkern */ 728 char *inet_ntoa_r(struct in_addr ina, char *buf); /* in libkern */ 729 char *inet_ntop(int, const void *, char *, socklen_t); /* in libkern */ 730 int inet_pton(int af, const char *, void *); /* in libkern */ 731 void in_ifdetach(struct ifnet *); 732 733 #define in_hosteq(s, t) ((s).s_addr == (t).s_addr) 734 #define in_nullhost(x) ((x).s_addr == INADDR_ANY) 735 #define in_allhosts(x) ((x).s_addr == htonl(INADDR_ALLHOSTS_GROUP)) 736 737 #define satosin(sa) ((struct sockaddr_in *)(sa)) 738 #define sintosa(sin) ((struct sockaddr *)(sin)) 739 #define ifatoia(ifa) ((struct in_ifaddr *)(ifa)) 740 741 /* 742 * Historically, BSD keeps ip_len and ip_off in host format 743 * when doing layer 3 processing, and this often requires 744 * to translate the format back and forth. 745 * To make the process explicit, we define a couple of macros 746 * that also take into account the fact that at some point 747 * we may want to keep those fields always in net format. 748 */ 749 750 #if (BYTE_ORDER == BIG_ENDIAN) || defined(HAVE_NET_IPLEN) 751 #define SET_NET_IPLEN(p) do {} while (0) 752 #define SET_HOST_IPLEN(p) do {} while (0) 753 #else 754 #define SET_NET_IPLEN(p) do { \ 755 struct ip *h_ip = (p); \ 756 h_ip->ip_len = htons(h_ip->ip_len); \ 757 h_ip->ip_off = htons(h_ip->ip_off); \ 758 } while (0) 759 760 #define SET_HOST_IPLEN(p) do { \ 761 struct ip *h_ip = (p); \ 762 h_ip->ip_len = ntohs(h_ip->ip_len); \ 763 h_ip->ip_off = ntohs(h_ip->ip_off); \ 764 } while (0) 765 #endif /* !HAVE_NET_IPLEN */ 766 767 #endif /* _KERNEL */ 768 769 /* INET6 stuff */ 770 #if __POSIX_VISIBLE >= 200112 771 #define __KAME_NETINET_IN_H_INCLUDED_ 772 #include <netinet6/in6.h> 773 #undef __KAME_NETINET_IN_H_INCLUDED_ 774 #endif 775 776 #endif /* !_NETINET_IN_H_*/ 777