1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1982, 1986, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)in.h 8.3 (Berkeley) 1/3/94 32 * $FreeBSD$ 33 */ 34 35 #ifndef _NETINET_IN_H_ 36 #define _NETINET_IN_H_ 37 38 #include <sys/cdefs.h> 39 #include <sys/_types.h> 40 #include <machine/endian.h> 41 42 /* Protocols common to RFC 1700, POSIX, and X/Open. */ 43 #define IPPROTO_IP 0 /* dummy for IP */ 44 #define IPPROTO_ICMP 1 /* control message protocol */ 45 #define IPPROTO_TCP 6 /* tcp */ 46 #define IPPROTO_UDP 17 /* user datagram protocol */ 47 48 #define INADDR_ANY ((in_addr_t)0x00000000) 49 #define INADDR_BROADCAST ((in_addr_t)0xffffffff) /* must be masked */ 50 51 #ifndef _UINT8_T_DECLARED 52 typedef __uint8_t uint8_t; 53 #define _UINT8_T_DECLARED 54 #endif 55 56 #ifndef _UINT16_T_DECLARED 57 typedef __uint16_t uint16_t; 58 #define _UINT16_T_DECLARED 59 #endif 60 61 #ifndef _UINT32_T_DECLARED 62 typedef __uint32_t uint32_t; 63 #define _UINT32_T_DECLARED 64 #endif 65 66 #ifndef _IN_ADDR_T_DECLARED 67 typedef uint32_t in_addr_t; 68 #define _IN_ADDR_T_DECLARED 69 #endif 70 71 #ifndef _IN_PORT_T_DECLARED 72 typedef uint16_t in_port_t; 73 #define _IN_PORT_T_DECLARED 74 #endif 75 76 #ifndef _SA_FAMILY_T_DECLARED 77 typedef __sa_family_t sa_family_t; 78 #define _SA_FAMILY_T_DECLARED 79 #endif 80 81 /* Internet address (a structure for historical reasons). */ 82 #ifndef _STRUCT_IN_ADDR_DECLARED 83 struct in_addr { 84 in_addr_t s_addr; 85 }; 86 #define _STRUCT_IN_ADDR_DECLARED 87 #endif 88 89 #ifndef _SOCKLEN_T_DECLARED 90 typedef __socklen_t socklen_t; 91 #define _SOCKLEN_T_DECLARED 92 #endif 93 94 #include <sys/_sockaddr_storage.h> 95 96 /* Socket address, internet style. */ 97 struct sockaddr_in { 98 uint8_t sin_len; 99 sa_family_t sin_family; 100 in_port_t sin_port; 101 struct in_addr sin_addr; 102 char sin_zero[8]; 103 }; 104 105 #if !defined(_KERNEL) && __POSIX_VISIBLE >= 200112 106 107 #ifndef _BYTEORDER_PROTOTYPED 108 #define _BYTEORDER_PROTOTYPED 109 __BEGIN_DECLS 110 uint32_t htonl(uint32_t); 111 uint16_t htons(uint16_t); 112 uint32_t ntohl(uint32_t); 113 uint16_t ntohs(uint16_t); 114 __END_DECLS 115 #endif 116 117 #ifndef _BYTEORDER_FUNC_DEFINED 118 #define _BYTEORDER_FUNC_DEFINED 119 #define htonl(x) __htonl(x) 120 #define htons(x) __htons(x) 121 #define ntohl(x) __ntohl(x) 122 #define ntohs(x) __ntohs(x) 123 #endif 124 125 #endif /* !_KERNEL && __POSIX_VISIBLE >= 200112 */ 126 127 #if __POSIX_VISIBLE >= 200112 128 #define IPPROTO_IPV6 41 /* IP6 header */ 129 #define IPPROTO_RAW 255 /* raw IP packet */ 130 #define INET_ADDRSTRLEN 16 131 #endif 132 133 #if __BSD_VISIBLE 134 /* 135 * Constants and structures defined by the internet system, 136 * Per RFC 790, September 1981, and numerous additions. 137 */ 138 139 /* 140 * Protocols (RFC 1700) 141 */ 142 #define IPPROTO_HOPOPTS 0 /* IP6 hop-by-hop options */ 143 #define IPPROTO_IGMP 2 /* group mgmt protocol */ 144 #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 145 #define IPPROTO_IPV4 4 /* IPv4 encapsulation */ 146 #define IPPROTO_IPIP IPPROTO_IPV4 /* for compatibility */ 147 #define IPPROTO_ST 7 /* Stream protocol II */ 148 #define IPPROTO_EGP 8 /* exterior gateway protocol */ 149 #define IPPROTO_PIGP 9 /* private interior gateway */ 150 #define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */ 151 #define IPPROTO_NVPII 11 /* network voice protocol*/ 152 #define IPPROTO_PUP 12 /* pup */ 153 #define IPPROTO_ARGUS 13 /* Argus */ 154 #define IPPROTO_EMCON 14 /* EMCON */ 155 #define IPPROTO_XNET 15 /* Cross Net Debugger */ 156 #define IPPROTO_CHAOS 16 /* Chaos*/ 157 #define IPPROTO_MUX 18 /* Multiplexing */ 158 #define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */ 159 #define IPPROTO_HMP 20 /* Host Monitoring */ 160 #define IPPROTO_PRM 21 /* Packet Radio Measurement */ 161 #define IPPROTO_IDP 22 /* xns idp */ 162 #define IPPROTO_TRUNK1 23 /* Trunk-1 */ 163 #define IPPROTO_TRUNK2 24 /* Trunk-2 */ 164 #define IPPROTO_LEAF1 25 /* Leaf-1 */ 165 #define IPPROTO_LEAF2 26 /* Leaf-2 */ 166 #define IPPROTO_RDP 27 /* Reliable Data */ 167 #define IPPROTO_IRTP 28 /* Reliable Transaction */ 168 #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 169 #define IPPROTO_BLT 30 /* Bulk Data Transfer */ 170 #define IPPROTO_NSP 31 /* Network Services */ 171 #define IPPROTO_INP 32 /* Merit Internodal */ 172 #define IPPROTO_DCCP 33 /* Datagram Congestion Control Protocol */ 173 #define IPPROTO_3PC 34 /* Third Party Connect */ 174 #define IPPROTO_IDPR 35 /* InterDomain Policy Routing */ 175 #define IPPROTO_XTP 36 /* XTP */ 176 #define IPPROTO_DDP 37 /* Datagram Delivery */ 177 #define IPPROTO_CMTP 38 /* Control Message Transport */ 178 #define IPPROTO_TPXX 39 /* TP++ Transport */ 179 #define IPPROTO_IL 40 /* IL transport protocol */ 180 #define IPPROTO_SDRP 42 /* Source Demand Routing */ 181 #define IPPROTO_ROUTING 43 /* IP6 routing header */ 182 #define IPPROTO_FRAGMENT 44 /* IP6 fragmentation header */ 183 #define IPPROTO_IDRP 45 /* InterDomain Routing*/ 184 #define IPPROTO_RSVP 46 /* resource reservation */ 185 #define IPPROTO_GRE 47 /* General Routing Encap. */ 186 #define IPPROTO_MHRP 48 /* Mobile Host Routing */ 187 #define IPPROTO_BHA 49 /* BHA */ 188 #define IPPROTO_ESP 50 /* IP6 Encap Sec. Payload */ 189 #define IPPROTO_AH 51 /* IP6 Auth Header */ 190 #define IPPROTO_INLSP 52 /* Integ. Net Layer Security */ 191 #define IPPROTO_SWIPE 53 /* IP with encryption */ 192 #define IPPROTO_NHRP 54 /* Next Hop Resolution */ 193 #define IPPROTO_MOBILE 55 /* IP Mobility */ 194 #define IPPROTO_TLSP 56 /* Transport Layer Security */ 195 #define IPPROTO_SKIP 57 /* SKIP */ 196 #define IPPROTO_ICMPV6 58 /* ICMP6 */ 197 #define IPPROTO_NONE 59 /* IP6 no next header */ 198 #define IPPROTO_DSTOPTS 60 /* IP6 destination option */ 199 #define IPPROTO_AHIP 61 /* any host internal protocol */ 200 #define IPPROTO_CFTP 62 /* CFTP */ 201 #define IPPROTO_HELLO 63 /* "hello" routing protocol */ 202 #define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */ 203 #define IPPROTO_KRYPTOLAN 65 /* Kryptolan */ 204 #define IPPROTO_RVD 66 /* Remote Virtual Disk */ 205 #define IPPROTO_IPPC 67 /* Pluribus Packet Core */ 206 #define IPPROTO_ADFS 68 /* Any distributed FS */ 207 #define IPPROTO_SATMON 69 /* Satnet Monitoring */ 208 #define IPPROTO_VISA 70 /* VISA Protocol */ 209 #define IPPROTO_IPCV 71 /* Packet Core Utility */ 210 #define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */ 211 #define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */ 212 #define IPPROTO_WSN 74 /* Wang Span Network */ 213 #define IPPROTO_PVP 75 /* Packet Video Protocol */ 214 #define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */ 215 #define IPPROTO_ND 77 /* Sun net disk proto (temp.) */ 216 #define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */ 217 #define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */ 218 #define IPPROTO_EON 80 /* ISO cnlp */ 219 #define IPPROTO_VMTP 81 /* VMTP */ 220 #define IPPROTO_SVMTP 82 /* Secure VMTP */ 221 #define IPPROTO_VINES 83 /* Banyon VINES */ 222 #define IPPROTO_TTP 84 /* TTP */ 223 #define IPPROTO_IGP 85 /* NSFNET-IGP */ 224 #define IPPROTO_DGP 86 /* dissimilar gateway prot. */ 225 #define IPPROTO_TCF 87 /* TCF */ 226 #define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */ 227 #define IPPROTO_OSPFIGP 89 /* OSPFIGP */ 228 #define IPPROTO_SRPC 90 /* Strite RPC protocol */ 229 #define IPPROTO_LARP 91 /* Locus Address Resoloution */ 230 #define IPPROTO_MTP 92 /* Multicast Transport */ 231 #define IPPROTO_AX25 93 /* AX.25 Frames */ 232 #define IPPROTO_IPEIP 94 /* IP encapsulated in IP */ 233 #define IPPROTO_MICP 95 /* Mobile Int.ing control */ 234 #define IPPROTO_SCCSP 96 /* Semaphore Comm. security */ 235 #define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */ 236 #define IPPROTO_ENCAP 98 /* encapsulation header */ 237 #define IPPROTO_APES 99 /* any private encr. scheme */ 238 #define IPPROTO_GMTP 100 /* GMTP*/ 239 #define IPPROTO_IPCOMP 108 /* payload compression (IPComp) */ 240 #define IPPROTO_SCTP 132 /* SCTP */ 241 #define IPPROTO_MH 135 /* IPv6 Mobility Header */ 242 #define IPPROTO_UDPLITE 136 /* UDP-Lite */ 243 #define IPPROTO_HIP 139 /* IP6 Host Identity Protocol */ 244 #define IPPROTO_SHIM6 140 /* IP6 Shim6 Protocol */ 245 /* 101-254: Partly Unassigned */ 246 #define IPPROTO_PIM 103 /* Protocol Independent Mcast */ 247 #define IPPROTO_CARP 112 /* CARP */ 248 #define IPPROTO_PGM 113 /* PGM */ 249 #define IPPROTO_MPLS 137 /* MPLS-in-IP */ 250 #define IPPROTO_PFSYNC 240 /* PFSYNC */ 251 #define IPPROTO_RESERVED_253 253 /* Reserved */ 252 #define IPPROTO_RESERVED_254 254 /* Reserved */ 253 /* 255: Reserved */ 254 /* BSD Private, local use, namespace incursion, no longer used */ 255 #define IPPROTO_OLD_DIVERT 254 /* OLD divert pseudo-proto */ 256 #define IPPROTO_MAX 256 257 258 /* last return value of *_input(), meaning "all job for this pkt is done". */ 259 #define IPPROTO_DONE 257 260 261 /* Only used internally, so can be outside the range of valid IP protocols. */ 262 #define IPPROTO_DIVERT 258 /* divert pseudo-protocol */ 263 #define IPPROTO_SEND 259 /* SeND pseudo-protocol */ 264 265 /* 266 * Defined to avoid confusion. The master value is defined by 267 * PROTO_SPACER in sys/protosw.h. 268 */ 269 #define IPPROTO_SPACER 32767 /* spacer for loadable protos */ 270 271 /* 272 * Local port number conventions: 273 * 274 * When a user does a bind(2) or connect(2) with a port number of zero, 275 * a non-conflicting local port address is chosen. 276 * The default range is IPPORT_HIFIRSTAUTO through 277 * IPPORT_HILASTAUTO, although that is settable by sysctl. 278 * 279 * A user may set the IPPROTO_IP option IP_PORTRANGE to change this 280 * default assignment range. 281 * 282 * The value IP_PORTRANGE_DEFAULT causes the default behavior. 283 * 284 * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers 285 * into the "high" range. These are reserved for client outbound connections 286 * which do not want to be filtered by any firewalls. 287 * 288 * The value IP_PORTRANGE_LOW changes the range to the "low" are 289 * that is (by convention) restricted to privileged processes. This 290 * convention is based on "vouchsafe" principles only. It is only secure 291 * if you trust the remote host to restrict these ports. 292 * 293 * The default range of ports and the high range can be changed by 294 * sysctl(3). (net.inet.ip.portrange.{hi,low,}{first,last}) 295 * 296 * Changing those values has bad security implications if you are 297 * using a stateless firewall that is allowing packets outside of that 298 * range in order to allow transparent outgoing connections. 299 * 300 * Such a firewall configuration will generally depend on the use of these 301 * default values. If you change them, you may find your Security 302 * Administrator looking for you with a heavy object. 303 * 304 * For a slightly more orthodox text view on this: 305 * 306 * ftp://ftp.isi.edu/in-notes/iana/assignments/port-numbers 307 * 308 * port numbers are divided into three ranges: 309 * 310 * 0 - 1023 Well Known Ports 311 * 1024 - 49151 Registered Ports 312 * 49152 - 65535 Dynamic and/or Private Ports 313 * 314 */ 315 316 /* 317 * Ports < IPPORT_RESERVED are reserved for 318 * privileged processes (e.g. root). (IP_PORTRANGE_LOW) 319 */ 320 #define IPPORT_RESERVED 1024 321 322 /* 323 * Default local port range, used by IP_PORTRANGE_DEFAULT 324 */ 325 #define IPPORT_EPHEMERALFIRST 10000 326 #define IPPORT_EPHEMERALLAST 65535 327 328 /* 329 * Dynamic port range, used by IP_PORTRANGE_HIGH. 330 */ 331 #define IPPORT_HIFIRSTAUTO 49152 332 #define IPPORT_HILASTAUTO 65535 333 334 /* 335 * Scanning for a free reserved port return a value below IPPORT_RESERVED, 336 * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was 337 * 512, but that conflicts with some well-known-services that firewalls may 338 * have a fit if we use. 339 */ 340 #define IPPORT_RESERVEDSTART 600 341 342 #define IPPORT_MAX 65535 343 344 /* 345 * Historical definitions of bits in internet address integers 346 * (pre-CIDR). Class A/B/C are long obsolete, and now deprecated. 347 * Hide these definitions from the kernel unless IN_HISTORICAL_NETS 348 * is defined. Provide the historical definitions to user level for now. 349 */ 350 #ifndef _KERNEL 351 #define IN_HISTORICAL_NETS 352 #endif 353 #ifdef IN_HISTORICAL_NETS 354 #define IN_CLASSA(i) (((in_addr_t)(i) & 0x80000000) == 0) 355 #define IN_CLASSA_NET 0xff000000 356 #define IN_CLASSA_NSHIFT 24 357 #define IN_CLASSA_HOST 0x00ffffff 358 #define IN_CLASSA_MAX 128 359 360 #define IN_CLASSB(i) (((in_addr_t)(i) & 0xc0000000) == 0x80000000) 361 #define IN_CLASSB_NET 0xffff0000 362 #define IN_CLASSB_NSHIFT 16 363 #define IN_CLASSB_HOST 0x0000ffff 364 #define IN_CLASSB_MAX 65536 365 366 #define IN_CLASSC(i) (((in_addr_t)(i) & 0xe0000000) == 0xc0000000) 367 #define IN_CLASSC_NET 0xffffff00 368 #define IN_CLASSC_NSHIFT 8 369 #define IN_CLASSC_HOST 0x000000ff 370 #endif /* IN_HISTORICAL_NETS */ 371 372 #define IN_NETMASK_DEFAULT 0xffffff00 /* mask when forced to guess */ 373 374 #define IN_MULTICAST(i) (((in_addr_t)(i) & 0xf0000000) == 0xe0000000) 375 #ifdef IN_HISTORICAL_NETS 376 #define IN_CLASSD(i) IN_MULTICAST(i) 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 #endif /* IN_HISTORICAL_NETS */ 381 382 #define IN_EXPERIMENTAL(i) (((in_addr_t)(i) & 0xf0000000) == 0xf0000000) 383 #define IN_BADCLASS(i) (((in_addr_t)(i) & 0xf0000000) == 0xf0000000) 384 385 #define IN_LINKLOCAL(i) (((in_addr_t)(i) & 0xffff0000) == 0xa9fe0000) 386 #ifdef _KERNEL 387 #define IN_LOOPBACK(i) \ 388 (((in_addr_t)(i) & V_in_loopback_mask) == 0x7f000000) 389 #define IN_LOOPBACK_MASK_DFLT 0xff000000 390 #else 391 #define IN_LOOPBACK(i) (((in_addr_t)(i) & 0xff000000) == 0x7f000000) 392 #endif 393 #define IN_ZERONET(i) (((in_addr_t)(i) & 0xff000000) == 0) 394 395 #define IN_PRIVATE(i) ((((in_addr_t)(i) & 0xff000000) == 0x0a000000) || \ 396 (((in_addr_t)(i) & 0xfff00000) == 0xac100000) || \ 397 (((in_addr_t)(i) & 0xffff0000) == 0xc0a80000)) 398 399 #define IN_LOCAL_GROUP(i) (((in_addr_t)(i) & 0xffffff00) == 0xe0000000) 400 401 #define IN_ANY_LOCAL(i) (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i)) 402 403 #define INADDR_LOOPBACK ((in_addr_t)0x7f000001) 404 #ifndef _KERNEL 405 #define INADDR_NONE ((in_addr_t)0xffffffff) /* -1 return */ 406 #endif 407 408 #define INADDR_UNSPEC_GROUP ((in_addr_t)0xe0000000) /* 224.0.0.0 */ 409 #define INADDR_ALLHOSTS_GROUP ((in_addr_t)0xe0000001) /* 224.0.0.1 */ 410 #define INADDR_ALLRTRS_GROUP ((in_addr_t)0xe0000002) /* 224.0.0.2 */ 411 #define INADDR_ALLRPTS_GROUP ((in_addr_t)0xe0000016) /* 224.0.0.22, IGMPv3 */ 412 #define INADDR_CARP_GROUP ((in_addr_t)0xe0000012) /* 224.0.0.18 */ 413 #define INADDR_PFSYNC_GROUP ((in_addr_t)0xe00000f0) /* 224.0.0.240 */ 414 #define INADDR_ALLMDNS_GROUP ((in_addr_t)0xe00000fb) /* 224.0.0.251 */ 415 #define INADDR_MAX_LOCAL_GROUP ((in_addr_t)0xe00000ff) /* 224.0.0.255 */ 416 417 #ifdef IN_HISTORICAL_NETS 418 #define IN_LOOPBACKNET 127 /* official! */ 419 #endif /* IN_HISTORICAL_NETS */ 420 421 #define IN_RFC3021_MASK ((in_addr_t)0xfffffffe) 422 423 #ifdef _KERNEL 424 #include <net/vnet.h> 425 426 VNET_DECLARE(bool, ip_allow_net0); 427 VNET_DECLARE(bool, ip_allow_net240); 428 /* Address space reserved for loopback */ 429 VNET_DECLARE(uint32_t, in_loopback_mask); 430 #define V_ip_allow_net0 VNET(ip_allow_net0) 431 #define V_ip_allow_net240 VNET(ip_allow_net240) 432 #define V_in_loopback_mask VNET(in_loopback_mask) 433 #endif 434 435 /* 436 * Options for use with [gs]etsockopt at the IP level. 437 * First word of comment is data type; bool is stored in int. 438 */ 439 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 440 #define IP_HDRINCL 2 /* int; header is included with data */ 441 #define IP_TOS 3 /* int; IP type of service and preced. */ 442 #define IP_TTL 4 /* int; IP time to live */ 443 #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 444 #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 445 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 446 #define IP_SENDSRCADDR IP_RECVDSTADDR /* cmsg_type to set src addr */ 447 #define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 448 #define IP_MULTICAST_IF 9 /* struct in_addr *or* struct ip_mreqn; 449 * set/get IP multicast i/f */ 450 #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 451 #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 452 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 453 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 454 #define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ 455 #define IP_RSVP_ON 15 /* enable RSVP in kernel */ 456 #define IP_RSVP_OFF 16 /* disable RSVP in kernel */ 457 #define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ 458 #define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ 459 #define IP_PORTRANGE 19 /* int; range to choose for unspec port */ 460 #define IP_RECVIF 20 /* bool; receive reception if w/dgram */ 461 /* for IPSEC */ 462 #define IP_IPSEC_POLICY 21 /* int; set/get security policy */ 463 /* unused; was IP_FAITH */ 464 #define IP_ONESBCAST 23 /* bool: send all-ones broadcast */ 465 #define IP_BINDANY 24 /* bool: allow bind to any address */ 466 #define IP_BINDMULTI 25 /* bool: allow multiple listeners on a tuple */ 467 #define IP_RSS_LISTEN_BUCKET 26 /* int; set RSS listen bucket */ 468 #define IP_ORIGDSTADDR 27 /* bool: receive IP dst addr/port w/dgram */ 469 #define IP_RECVORIGDSTADDR IP_ORIGDSTADDR 470 471 /* 472 * Options for controlling the firewall and dummynet. 473 * Historical options (from 40 to 64) will eventually be 474 * replaced by only two options, IP_FW3 and IP_DUMMYNET3. 475 */ 476 #define IP_FW_TABLE_ADD 40 /* add entry */ 477 #define IP_FW_TABLE_DEL 41 /* delete entry */ 478 #define IP_FW_TABLE_FLUSH 42 /* flush table */ 479 #define IP_FW_TABLE_GETSIZE 43 /* get table size */ 480 #define IP_FW_TABLE_LIST 44 /* list table contents */ 481 482 #define IP_FW3 48 /* generic ipfw v.3 sockopts */ 483 #define IP_DUMMYNET3 49 /* generic dummynet v.3 sockopts */ 484 485 #define IP_FW_ADD 50 /* add a firewall rule to chain */ 486 #define IP_FW_DEL 51 /* delete a firewall rule from chain */ 487 #define IP_FW_FLUSH 52 /* flush firewall rule chain */ 488 #define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */ 489 #define IP_FW_GET 54 /* get entire firewall rule chain */ 490 #define IP_FW_RESETLOG 55 /* reset logging counters */ 491 492 #define IP_FW_NAT_CFG 56 /* add/config a nat rule */ 493 #define IP_FW_NAT_DEL 57 /* delete a nat rule */ 494 #define IP_FW_NAT_GET_CONFIG 58 /* get configuration of a nat rule */ 495 #define IP_FW_NAT_GET_LOG 59 /* get log of a nat rule */ 496 497 #define IP_DUMMYNET_CONFIGURE 60 /* add/configure a dummynet pipe */ 498 #define IP_DUMMYNET_DEL 61 /* delete a dummynet pipe from chain */ 499 #define IP_DUMMYNET_FLUSH 62 /* flush dummynet */ 500 #define IP_DUMMYNET_GET 64 /* get entire dummynet pipes */ 501 502 #define IP_RECVTTL 65 /* bool; receive IP TTL w/dgram */ 503 #define IP_MINTTL 66 /* minimum TTL for packet or drop */ 504 #define IP_DONTFRAG 67 /* don't fragment packet */ 505 #define IP_RECVTOS 68 /* bool; receive IP TOS w/dgram */ 506 507 /* IPv4 Source Filter Multicast API [RFC3678] */ 508 #define IP_ADD_SOURCE_MEMBERSHIP 70 /* join a source-specific group */ 509 #define IP_DROP_SOURCE_MEMBERSHIP 71 /* drop a single source */ 510 #define IP_BLOCK_SOURCE 72 /* block a source */ 511 #define IP_UNBLOCK_SOURCE 73 /* unblock a source */ 512 513 /* The following option is private; do not use it from user applications. */ 514 #define IP_MSFILTER 74 /* set/get filter list */ 515 516 /* The following option deals with the 802.1Q Ethernet Priority Code Point */ 517 #define IP_VLAN_PCP 75 /* int; set/get PCP used for packet, */ 518 /* -1 use interface default */ 519 520 /* Protocol Independent Multicast API [RFC3678] */ 521 #define MCAST_JOIN_GROUP 80 /* join an any-source group */ 522 #define MCAST_LEAVE_GROUP 81 /* leave all sources for group */ 523 #define MCAST_JOIN_SOURCE_GROUP 82 /* join a source-specific group */ 524 #define MCAST_LEAVE_SOURCE_GROUP 83 /* leave a single source */ 525 #define MCAST_BLOCK_SOURCE 84 /* block a source */ 526 #define MCAST_UNBLOCK_SOURCE 85 /* unblock a source */ 527 528 /* Flow and RSS definitions */ 529 #define IP_FLOWID 90 /* get flow id for the given socket/inp */ 530 #define IP_FLOWTYPE 91 /* get flow type (M_HASHTYPE) */ 531 #define IP_RSSBUCKETID 92 /* get RSS flowid -> bucket mapping */ 532 #define IP_RECVFLOWID 93 /* bool; receive IP flowid/flowtype w/ datagram */ 533 #define IP_RECVRSSBUCKETID 94 /* bool; receive IP RSS bucket id w/ datagram */ 534 535 /* 536 * Defaults and limits for options 537 */ 538 #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 539 #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 540 541 /* 542 * Limit for IPv4 multicast memberships 543 */ 544 #define IP_MAX_MEMBERSHIPS 4095 545 546 /* 547 * Default resource limits for IPv4 multicast source filtering. 548 * These may be modified by sysctl. 549 */ 550 #define IP_MAX_GROUP_SRC_FILTER 512 /* sources per group */ 551 #define IP_MAX_SOCK_SRC_FILTER 128 /* sources per socket/group */ 552 #define IP_MAX_SOCK_MUTE_FILTER 128 /* XXX no longer used */ 553 554 /* 555 * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 556 */ 557 struct ip_mreq { 558 struct in_addr imr_multiaddr; /* IP multicast address of group */ 559 struct in_addr imr_interface; /* local IP address of interface */ 560 }; 561 562 /* 563 * Modified argument structure for IP_MULTICAST_IF, obtained from Linux. 564 * This is used to specify an interface index for multicast sends, as 565 * the IPv4 legacy APIs do not support this (unless IP_SENDIF is available). 566 */ 567 struct ip_mreqn { 568 struct in_addr imr_multiaddr; /* IP multicast address of group */ 569 struct in_addr imr_address; /* local IP address of interface */ 570 int imr_ifindex; /* Interface index; cast to uint32_t */ 571 }; 572 573 /* 574 * Argument structure for IPv4 Multicast Source Filter APIs. [RFC3678] 575 */ 576 struct ip_mreq_source { 577 struct in_addr imr_multiaddr; /* IP multicast address of group */ 578 struct in_addr imr_sourceaddr; /* IP address of source */ 579 struct in_addr imr_interface; /* local IP address of interface */ 580 }; 581 582 /* 583 * Argument structures for Protocol-Independent Multicast Source 584 * Filter APIs. [RFC3678] 585 */ 586 struct group_req { 587 uint32_t gr_interface; /* interface index */ 588 struct sockaddr_storage gr_group; /* group address */ 589 }; 590 591 struct group_source_req { 592 uint32_t gsr_interface; /* interface index */ 593 struct sockaddr_storage gsr_group; /* group address */ 594 struct sockaddr_storage gsr_source; /* source address */ 595 }; 596 597 #ifndef __MSFILTERREQ_DEFINED 598 #define __MSFILTERREQ_DEFINED 599 /* 600 * The following structure is private; do not use it from user applications. 601 * It is used to communicate IP_MSFILTER/IPV6_MSFILTER information between 602 * the RFC 3678 libc functions and the kernel. 603 */ 604 struct __msfilterreq { 605 uint32_t msfr_ifindex; /* interface index */ 606 uint32_t msfr_fmode; /* filter mode for group */ 607 uint32_t msfr_nsrcs; /* # of sources in msfr_srcs */ 608 struct sockaddr_storage msfr_group; /* group address */ 609 struct sockaddr_storage *msfr_srcs; /* pointer to the first member 610 * of a contiguous array of 611 * sources to filter in full. 612 */ 613 }; 614 #endif 615 616 struct sockaddr; 617 618 /* 619 * Advanced (Full-state) APIs [RFC3678] 620 * The RFC specifies uint_t for the 6th argument to [sg]etsourcefilter(). 621 * We use uint32_t here to be consistent. 622 */ 623 int setipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t, 624 uint32_t, struct in_addr *); 625 int getipv4sourcefilter(int, struct in_addr, struct in_addr, uint32_t *, 626 uint32_t *, struct in_addr *); 627 int setsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 628 uint32_t, uint32_t, struct sockaddr_storage *); 629 int getsourcefilter(int, uint32_t, struct sockaddr *, socklen_t, 630 uint32_t *, uint32_t *, struct sockaddr_storage *); 631 632 /* 633 * Filter modes; also used to represent per-socket filter mode internally. 634 */ 635 #define MCAST_UNDEFINED 0 /* fmode: not yet defined */ 636 #define MCAST_INCLUDE 1 /* fmode: include these source(s) */ 637 #define MCAST_EXCLUDE 2 /* fmode: exclude these source(s) */ 638 639 /* 640 * Argument for IP_PORTRANGE: 641 * - which range to search when port is unspecified at bind() or connect() 642 */ 643 #define IP_PORTRANGE_DEFAULT 0 /* default range */ 644 #define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ 645 #define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ 646 647 /* 648 * Identifiers for IP sysctl nodes 649 */ 650 #define IPCTL_FORWARDING 1 /* act as router */ 651 #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ 652 #define IPCTL_DEFTTL 3 /* default TTL */ 653 #ifdef notyet 654 #define IPCTL_DEFMTU 4 /* default MTU */ 655 #endif 656 /* IPCTL_RTEXPIRE 5 deprecated */ 657 /* IPCTL_RTMINEXPIRE 6 deprecated */ 658 /* IPCTL_RTMAXCACHE 7 deprecated */ 659 #define IPCTL_SOURCEROUTE 8 /* may perform source routes */ 660 #define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ 661 #define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ 662 #define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ 663 #define IPCTL_STATS 12 /* ipstat structure */ 664 #define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */ 665 #define IPCTL_FASTFORWARDING 14 /* use fast IP forwarding code */ 666 /* 15, unused, was: IPCTL_KEEPFAITH */ 667 #define IPCTL_GIF_TTL 16 /* default TTL for gif encap packet */ 668 #define IPCTL_INTRDQMAXLEN 17 /* max length of direct netisr queue */ 669 #define IPCTL_INTRDQDROPS 18 /* number of direct netisr q drops */ 670 671 #endif /* __BSD_VISIBLE */ 672 673 #ifdef _KERNEL 674 675 struct ifnet; struct mbuf; /* forward declarations for Standard C */ 676 struct in_ifaddr; 677 678 int in_broadcast(struct in_addr, struct ifnet *); 679 int in_ifaddr_broadcast(struct in_addr, struct in_ifaddr *); 680 int in_canforward(struct in_addr); 681 int in_localaddr(struct in_addr); 682 bool in_localip(struct in_addr); 683 bool in_localip_fib(struct in_addr, uint16_t); 684 int in_ifhasaddr(struct ifnet *, struct in_addr); 685 struct in_ifaddr *in_findlocal(uint32_t, bool); 686 int inet_aton(const char *, struct in_addr *); /* in libkern */ 687 char *inet_ntoa_r(struct in_addr ina, char *buf); /* in libkern */ 688 char *inet_ntop(int, const void *, char *, socklen_t); /* in libkern */ 689 int inet_pton(int af, const char *, void *); /* in libkern */ 690 void in_ifdetach(struct ifnet *); 691 692 #define in_hosteq(s, t) ((s).s_addr == (t).s_addr) 693 #define in_nullhost(x) ((x).s_addr == INADDR_ANY) 694 #define in_allhosts(x) ((x).s_addr == htonl(INADDR_ALLHOSTS_GROUP)) 695 696 #define satosin(sa) ((struct sockaddr_in *)(sa)) 697 #define sintosa(sin) ((struct sockaddr *)(sin)) 698 #define ifatoia(ifa) ((struct in_ifaddr *)(ifa)) 699 #endif /* _KERNEL */ 700 701 /* INET6 stuff */ 702 #if __POSIX_VISIBLE >= 200112 703 #define __KAME_NETINET_IN_H_INCLUDED_ 704 #include <netinet6/in6.h> 705 #undef __KAME_NETINET_IN_H_INCLUDED_ 706 #endif 707 708 #endif /* !_NETINET_IN_H_*/ 709