1 /* Copyright (C) 1991-2001, 2003, 2004, 2006, 2007, 2008, 2011, 2012 2 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <http://www.gnu.org/licenses/>. */ 18 19 #ifndef _NETINET_IN_H 20 #define _NETINET_IN_H 1 21 22 #include <features.h> 23 #include <stdint.h> 24 #include <sys/socket.h> 25 #include <bits/types.h> 26 27 28 __BEGIN_DECLS 29 30 /* Standard well-defined IP protocols. */ 31 enum 32 { 33 IPPROTO_IP = 0, /* Dummy protocol for TCP. */ 34 #define IPPROTO_IP IPPROTO_IP 35 IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */ 36 #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS 37 IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */ 38 #define IPPROTO_ICMP IPPROTO_ICMP 39 IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */ 40 #define IPPROTO_IGMP IPPROTO_IGMP 41 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */ 42 #define IPPROTO_IPIP IPPROTO_IPIP 43 IPPROTO_TCP = 6, /* Transmission Control Protocol. */ 44 #define IPPROTO_TCP IPPROTO_TCP 45 IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */ 46 #define IPPROTO_EGP IPPROTO_EGP 47 IPPROTO_PUP = 12, /* PUP protocol. */ 48 #define IPPROTO_PUP IPPROTO_PUP 49 IPPROTO_UDP = 17, /* User Datagram Protocol. */ 50 #define IPPROTO_UDP IPPROTO_UDP 51 IPPROTO_IDP = 22, /* XNS IDP protocol. */ 52 #define IPPROTO_IDP IPPROTO_IDP 53 IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */ 54 #define IPPROTO_TP IPPROTO_TP 55 IPPROTO_DCCP = 33, /* Datagram Congestion Control Protocol. */ 56 #define IPPROTO_DCCP IPPROTO_DCCP 57 IPPROTO_IPV6 = 41, /* IPv6 header. */ 58 #define IPPROTO_IPV6 IPPROTO_IPV6 59 IPPROTO_ROUTING = 43, /* IPv6 routing header. */ 60 #define IPPROTO_ROUTING IPPROTO_ROUTING 61 IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */ 62 #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT 63 IPPROTO_RSVP = 46, /* Reservation Protocol. */ 64 #define IPPROTO_RSVP IPPROTO_RSVP 65 IPPROTO_GRE = 47, /* General Routing Encapsulation. */ 66 #define IPPROTO_GRE IPPROTO_GRE 67 IPPROTO_ESP = 50, /* encapsulating security payload. */ 68 #define IPPROTO_ESP IPPROTO_ESP 69 IPPROTO_AH = 51, /* authentication header. */ 70 #define IPPROTO_AH IPPROTO_AH 71 IPPROTO_ICMPV6 = 58, /* ICMPv6. */ 72 #define IPPROTO_ICMPV6 IPPROTO_ICMPV6 73 IPPROTO_NONE = 59, /* IPv6 no next header. */ 74 #define IPPROTO_NONE IPPROTO_NONE 75 IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */ 76 #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS 77 IPPROTO_MTP = 92, /* Multicast Transport Protocol. */ 78 #define IPPROTO_MTP IPPROTO_MTP 79 IPPROTO_ENCAP = 98, /* Encapsulation Header. */ 80 #define IPPROTO_ENCAP IPPROTO_ENCAP 81 IPPROTO_PIM = 103, /* Protocol Independent Multicast. */ 82 #define IPPROTO_PIM IPPROTO_PIM 83 IPPROTO_COMP = 108, /* Compression Header Protocol. */ 84 #define IPPROTO_COMP IPPROTO_COMP 85 IPPROTO_SCTP = 132, /* Stream Control Transmission Protocol. */ 86 #define IPPROTO_SCTP IPPROTO_SCTP 87 IPPROTO_UDPLITE = 136, /* UDP-Lite protocol. */ 88 #define IPPROTO_UDPLITE IPPROTO_UDPLITE 89 IPPROTO_RAW = 255, /* Raw IP packets. */ 90 #define IPPROTO_RAW IPPROTO_RAW 91 IPPROTO_MAX 92 }; 93 94 95 /* Type to represent a port. */ 96 typedef uint16_t in_port_t; 97 98 /* Standard well-known ports. */ 99 enum 100 { 101 IPPORT_ECHO = 7, /* Echo service. */ 102 IPPORT_DISCARD = 9, /* Discard transmissions service. */ 103 IPPORT_SYSTAT = 11, /* System status service. */ 104 IPPORT_DAYTIME = 13, /* Time of day service. */ 105 IPPORT_NETSTAT = 15, /* Network status service. */ 106 IPPORT_FTP = 21, /* File Transfer Protocol. */ 107 IPPORT_TELNET = 23, /* Telnet protocol. */ 108 IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */ 109 IPPORT_TIMESERVER = 37, /* Timeserver service. */ 110 IPPORT_NAMESERVER = 42, /* Domain Name Service. */ 111 IPPORT_WHOIS = 43, /* Internet Whois service. */ 112 IPPORT_MTP = 57, 113 114 IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */ 115 IPPORT_RJE = 77, 116 IPPORT_FINGER = 79, /* Finger service. */ 117 IPPORT_TTYLINK = 87, 118 IPPORT_SUPDUP = 95, /* SUPDUP protocol. */ 119 120 121 IPPORT_EXECSERVER = 512, /* execd service. */ 122 IPPORT_LOGINSERVER = 513, /* rlogind service. */ 123 IPPORT_CMDSERVER = 514, 124 IPPORT_EFSSERVER = 520, 125 126 /* UDP ports. */ 127 IPPORT_BIFFUDP = 512, 128 IPPORT_WHOSERVER = 513, 129 IPPORT_ROUTESERVER = 520, 130 131 /* Ports less than this value are reserved for privileged processes. */ 132 IPPORT_RESERVED = 1024, 133 134 /* Ports greater this value are reserved for (non-privileged) servers. */ 135 IPPORT_USERRESERVED = 5000 136 }; 137 138 139 /* Internet address. */ 140 typedef uint32_t in_addr_t; 141 struct in_addr 142 { 143 in_addr_t s_addr; 144 }; 145 146 147 /* Definitions of the bits in an Internet address integer. 148 149 On subnets, host and network parts are found according to 150 the subnet mask, not these masks. */ 151 152 #define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0) 153 #define IN_CLASSA_NET 0xff000000 154 #define IN_CLASSA_NSHIFT 24 155 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) 156 #define IN_CLASSA_MAX 128 157 158 #define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000) 159 #define IN_CLASSB_NET 0xffff0000 160 #define IN_CLASSB_NSHIFT 16 161 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) 162 #define IN_CLASSB_MAX 65536 163 164 #define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000) 165 #define IN_CLASSC_NET 0xffffff00 166 #define IN_CLASSC_NSHIFT 8 167 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) 168 169 #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000) 170 #define IN_MULTICAST(a) IN_CLASSD(a) 171 172 #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000) 173 #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000) 174 175 /* Address to accept any incoming messages. */ 176 #define INADDR_ANY ((in_addr_t) 0x00000000) 177 /* Address to send to all hosts. */ 178 #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) 179 /* Address indicating an error return. */ 180 #define INADDR_NONE ((in_addr_t) 0xffffffff) 181 182 /* Network number for local host loopback. */ 183 #define IN_LOOPBACKNET 127 184 /* Address to loopback in software to local host. */ 185 #ifndef INADDR_LOOPBACK 186 # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */ 187 #endif 188 189 /* Defines for Multicast INADDR. */ 190 #define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */ 191 #define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */ 192 #define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */ 193 #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */ 194 195 196 /* IPv6 address */ 197 struct in6_addr 198 { 199 union 200 { 201 uint8_t __u6_addr8[16]; 202 #if defined __USE_MISC || defined __USE_GNU 203 uint16_t __u6_addr16[8]; 204 uint32_t __u6_addr32[4]; 205 #endif 206 } __in6_u; 207 #define s6_addr __in6_u.__u6_addr8 208 #if defined __USE_MISC || defined __USE_GNU 209 # define s6_addr16 __in6_u.__u6_addr16 210 # define s6_addr32 __in6_u.__u6_addr32 211 #endif 212 }; 213 214 extern const struct in6_addr in6addr_any; /* :: */ 215 extern const struct in6_addr in6addr_loopback; /* ::1 */ 216 #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } } 217 #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } } 218 219 #define INET_ADDRSTRLEN 16 220 #define INET6_ADDRSTRLEN 46 221 222 223 /* Structure describing an Internet socket address. */ 224 struct sockaddr_in 225 { 226 __SOCKADDR_COMMON (sin_); 227 in_port_t sin_port; /* Port number. */ 228 struct in_addr sin_addr; /* Internet address. */ 229 230 /* Pad to size of `struct sockaddr'. */ 231 unsigned char sin_zero[sizeof (struct sockaddr) - 232 __SOCKADDR_COMMON_SIZE - 233 sizeof (in_port_t) - 234 sizeof (struct in_addr)]; 235 }; 236 237 /* Ditto, for IPv6. */ 238 struct sockaddr_in6 239 { 240 __SOCKADDR_COMMON (sin6_); 241 in_port_t sin6_port; /* Transport layer port # */ 242 uint32_t sin6_flowinfo; /* IPv6 flow information */ 243 struct in6_addr sin6_addr; /* IPv6 address */ 244 uint32_t sin6_scope_id; /* IPv6 scope-id */ 245 }; 246 247 248 #if defined __USE_MISC || defined __USE_GNU 249 /* IPv4 multicast request. */ 250 struct ip_mreq 251 { 252 /* IP multicast address of group. */ 253 struct in_addr imr_multiaddr; 254 255 /* Local IP address of interface. */ 256 struct in_addr imr_interface; 257 }; 258 259 struct ip_mreq_source 260 { 261 /* IP multicast address of group. */ 262 struct in_addr imr_multiaddr; 263 264 /* IP address of source. */ 265 struct in_addr imr_interface; 266 267 /* IP address of interface. */ 268 struct in_addr imr_sourceaddr; 269 }; 270 #endif 271 272 273 /* Likewise, for IPv6. */ 274 struct ipv6_mreq 275 { 276 /* IPv6 multicast address of group */ 277 struct in6_addr ipv6mr_multiaddr; 278 279 /* local interface */ 280 unsigned int ipv6mr_interface; 281 }; 282 283 284 #if defined __USE_MISC || defined __USE_GNU 285 /* Multicast group request. */ 286 struct group_req 287 { 288 /* Interface index. */ 289 uint32_t gr_interface; 290 291 /* Group address. */ 292 struct sockaddr_storage gr_group; 293 }; 294 295 struct group_source_req 296 { 297 /* Interface index. */ 298 uint32_t gsr_interface; 299 300 /* Group address. */ 301 struct sockaddr_storage gsr_group; 302 303 /* Source address. */ 304 struct sockaddr_storage gsr_source; 305 }; 306 307 308 /* Full-state filter operations. */ 309 struct ip_msfilter 310 { 311 /* IP multicast address of group. */ 312 struct in_addr imsf_multiaddr; 313 314 /* Local IP address of interface. */ 315 struct in_addr imsf_interface; 316 317 /* Filter mode. */ 318 uint32_t imsf_fmode; 319 320 /* Number of source addresses. */ 321 uint32_t imsf_numsrc; 322 /* Source addresses. */ 323 struct in_addr imsf_slist[1]; 324 }; 325 326 #define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \ 327 - sizeof (struct in_addr) \ 328 + (numsrc) * sizeof (struct in_addr)) 329 330 struct group_filter 331 { 332 /* Interface index. */ 333 uint32_t gf_interface; 334 335 /* Group address. */ 336 struct sockaddr_storage gf_group; 337 338 /* Filter mode. */ 339 uint32_t gf_fmode; 340 341 /* Number of source addresses. */ 342 uint32_t gf_numsrc; 343 /* Source addresses. */ 344 struct sockaddr_storage gf_slist[1]; 345 }; 346 347 #define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \ 348 - sizeof (struct sockaddr_storage) \ 349 + ((numsrc) \ 350 * sizeof (struct sockaddr_storage))) 351 #endif 352 353 354 /* Get system-specific definitions. */ 355 #include <bits/in.h> 356 357 /* Functions to convert between host and network byte order. 358 359 Please note that these functions normally take `unsigned long int' or 360 `unsigned short int' values as arguments and also return them. But 361 this was a short-sighted decision since on different systems the types 362 may have different representations but the values are always the same. */ 363 364 extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__)); 365 extern uint16_t ntohs (uint16_t __netshort) 366 __THROW __attribute__ ((__const__)); 367 extern uint32_t htonl (uint32_t __hostlong) 368 __THROW __attribute__ ((__const__)); 369 extern uint16_t htons (uint16_t __hostshort) 370 __THROW __attribute__ ((__const__)); 371 372 #include <endian.h> 373 374 /* Get machine dependent optimized versions of byte swapping functions. */ 375 #include <bits/byteswap.h> 376 377 #ifdef __OPTIMIZE__ 378 /* We can optimize calls to the conversion functions. Either nothing has 379 to be done or we are using directly the byte-swapping functions which 380 often can be inlined. */ 381 # if __BYTE_ORDER == __BIG_ENDIAN 382 /* The host byte order is the same as network byte order, 383 so these functions are all just identity. */ 384 # define ntohl(x) (x) 385 # define ntohs(x) (x) 386 # define htonl(x) (x) 387 # define htons(x) (x) 388 # else 389 # if __BYTE_ORDER == __LITTLE_ENDIAN 390 # define ntohl(x) __bswap_32 (x) 391 # define ntohs(x) __bswap_16 (x) 392 # define htonl(x) __bswap_32 (x) 393 # define htons(x) __bswap_16 (x) 394 # endif 395 # endif 396 #endif 397 398 #ifdef __GNUC__ 399 # define IN6_IS_ADDR_UNSPECIFIED(a) \ 400 (__extension__ \ 401 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ 402 __a->s6_addr32[0] == 0 \ 403 && __a->s6_addr32[1] == 0 \ 404 && __a->s6_addr32[2] == 0 \ 405 && __a->s6_addr32[3] == 0; })) 406 407 # define IN6_IS_ADDR_LOOPBACK(a) \ 408 (__extension__ \ 409 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ 410 __a->s6_addr32[0] == 0 \ 411 && __a->s6_addr32[1] == 0 \ 412 && __a->s6_addr32[2] == 0 \ 413 && __a->s6_addr32[3] == htonl (1); })) 414 415 # define IN6_IS_ADDR_LINKLOCAL(a) \ 416 (__extension__ \ 417 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ 418 (__a->s6_addr32[0] & htonl (0xffc00000)) == htonl (0xfe800000); })) 419 420 # define IN6_IS_ADDR_SITELOCAL(a) \ 421 (__extension__ \ 422 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ 423 (__a->s6_addr32[0] & htonl (0xffc00000)) == htonl (0xfec00000); })) 424 425 # define IN6_IS_ADDR_V4MAPPED(a) \ 426 (__extension__ \ 427 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ 428 __a->s6_addr32[0] == 0 \ 429 && __a->s6_addr32[1] == 0 \ 430 && __a->s6_addr32[2] == htonl (0xffff); })) 431 432 # define IN6_IS_ADDR_V4COMPAT(a) \ 433 (__extension__ \ 434 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ 435 __a->s6_addr32[0] == 0 \ 436 && __a->s6_addr32[1] == 0 \ 437 && __a->s6_addr32[2] == 0 \ 438 && ntohl (__a->s6_addr32[3]) > 1; })) 439 440 # define IN6_ARE_ADDR_EQUAL(a,b) \ 441 (__extension__ \ 442 ({ const struct in6_addr *__a = (const struct in6_addr *) (a); \ 443 const struct in6_addr *__b = (const struct in6_addr *) (b); \ 444 __a->s6_addr32[0] == __b->s6_addr32[0] \ 445 && __a->s6_addr32[1] == __b->s6_addr32[1] \ 446 && __a->s6_addr32[2] == __b->s6_addr32[2] \ 447 && __a->s6_addr32[3] == __b->s6_addr32[3]; })) 448 #else 449 # define IN6_IS_ADDR_UNSPECIFIED(a) \ 450 (((const uint32_t *) (a))[0] == 0 \ 451 && ((const uint32_t *) (a))[1] == 0 \ 452 && ((const uint32_t *) (a))[2] == 0 \ 453 && ((const uint32_t *) (a))[3] == 0) 454 455 # define IN6_IS_ADDR_LOOPBACK(a) \ 456 (((const uint32_t *) (a))[0] == 0 \ 457 && ((const uint32_t *) (a))[1] == 0 \ 458 && ((const uint32_t *) (a))[2] == 0 \ 459 && ((const uint32_t *) (a))[3] == htonl (1)) 460 461 # define IN6_IS_ADDR_LINKLOCAL(a) \ 462 ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \ 463 == htonl (0xfe800000)) 464 465 # define IN6_IS_ADDR_SITELOCAL(a) \ 466 ((((const uint32_t *) (a))[0] & htonl (0xffc00000)) \ 467 == htonl (0xfec00000)) 468 469 # define IN6_IS_ADDR_V4MAPPED(a) \ 470 ((((const uint32_t *) (a))[0] == 0) \ 471 && (((const uint32_t *) (a))[1] == 0) \ 472 && (((const uint32_t *) (a))[2] == htonl (0xffff))) 473 474 # define IN6_IS_ADDR_V4COMPAT(a) \ 475 ((((const uint32_t *) (a))[0] == 0) \ 476 && (((const uint32_t *) (a))[1] == 0) \ 477 && (((const uint32_t *) (a))[2] == 0) \ 478 && (ntohl (((const uint32_t *) (a))[3]) > 1)) 479 480 # define IN6_ARE_ADDR_EQUAL(a,b) \ 481 ((((const uint32_t *) (a))[0] == ((const uint32_t *) (b))[0]) \ 482 && (((const uint32_t *) (a))[1] == ((const uint32_t *) (b))[1]) \ 483 && (((const uint32_t *) (a))[2] == ((const uint32_t *) (b))[2]) \ 484 && (((const uint32_t *) (a))[3] == ((const uint32_t *) (b))[3])) 485 #endif 486 487 #define IN6_IS_ADDR_MULTICAST(a) (((const uint8_t *) (a))[0] == 0xff) 488 489 #if defined __USE_MISC || defined __USE_GNU 490 /* Bind socket to a privileged IP port. */ 491 extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW; 492 493 /* The IPv6 version of this function. */ 494 extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in) 495 __THROW; 496 #endif 497 498 499 #define IN6_IS_ADDR_MC_NODELOCAL(a) \ 500 (IN6_IS_ADDR_MULTICAST(a) \ 501 && ((((const uint8_t *) (a))[1] & 0xf) == 0x1)) 502 503 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ 504 (IN6_IS_ADDR_MULTICAST(a) \ 505 && ((((const uint8_t *) (a))[1] & 0xf) == 0x2)) 506 507 #define IN6_IS_ADDR_MC_SITELOCAL(a) \ 508 (IN6_IS_ADDR_MULTICAST(a) \ 509 && ((((const uint8_t *) (a))[1] & 0xf) == 0x5)) 510 511 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ 512 (IN6_IS_ADDR_MULTICAST(a) \ 513 && ((((const uint8_t *) (a))[1] & 0xf) == 0x8)) 514 515 #define IN6_IS_ADDR_MC_GLOBAL(a) \ 516 (IN6_IS_ADDR_MULTICAST(a) \ 517 && ((((const uint8_t *) (a))[1] & 0xf) == 0xe)) 518 519 520 #ifdef __USE_GNU 521 struct cmsghdr; /* Forward declaration. */ 522 523 /* IPv6 packet information. */ 524 struct in6_pktinfo 525 { 526 struct in6_addr ipi6_addr; /* src/dst IPv6 address */ 527 unsigned int ipi6_ifindex; /* send/recv interface index */ 528 }; 529 530 /* IPv6 MTU information. */ 531 struct ip6_mtuinfo 532 { 533 struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */ 534 uint32_t ip6m_mtu; /* path MTU in host byte order */ 535 }; 536 537 538 /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */ 539 extern int inet6_option_space (int __nbytes) 540 __THROW __attribute_deprecated__; 541 extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp, 542 int __type) __THROW __attribute_deprecated__; 543 extern int inet6_option_append (struct cmsghdr *__cmsg, 544 const uint8_t *__typep, int __multx, 545 int __plusy) __THROW __attribute_deprecated__; 546 extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen, 547 int __multx, int __plusy) 548 __THROW __attribute_deprecated__; 549 extern int inet6_option_next (const struct cmsghdr *__cmsg, 550 uint8_t **__tptrp) 551 __THROW __attribute_deprecated__; 552 extern int inet6_option_find (const struct cmsghdr *__cmsg, 553 uint8_t **__tptrp, int __type) 554 __THROW __attribute_deprecated__; 555 556 557 /* Hop-by-Hop and Destination Options Processing (RFC 3542). */ 558 extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW; 559 extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset, 560 uint8_t __type, socklen_t __len, uint8_t __align, 561 void **__databufp) __THROW; 562 extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset) 563 __THROW; 564 extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val, 565 socklen_t __vallen) __THROW; 566 extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset, 567 uint8_t *__typep, socklen_t *__lenp, 568 void **__databufp) __THROW; 569 extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset, 570 uint8_t __type, socklen_t *__lenp, 571 void **__databufp) __THROW; 572 extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val, 573 socklen_t __vallen) __THROW; 574 575 576 /* Routing Header Option (RFC 3542). */ 577 extern socklen_t inet6_rth_space (int __type, int __segments) __THROW; 578 extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type, 579 int __segments) __THROW; 580 extern int inet6_rth_add (void *__bp, const struct in6_addr *__addr) __THROW; 581 extern int inet6_rth_reverse (const void *__in, void *__out) __THROW; 582 extern int inet6_rth_segments (const void *__bp) __THROW; 583 extern struct in6_addr *inet6_rth_getaddr (const void *__bp, int __index) 584 __THROW; 585 586 587 /* Multicast source filter support. */ 588 589 /* Get IPv4 source filter. */ 590 extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr, 591 struct in_addr __group, uint32_t *__fmode, 592 uint32_t *__numsrc, struct in_addr *__slist) 593 __THROW; 594 595 /* Set IPv4 source filter. */ 596 extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr, 597 struct in_addr __group, uint32_t __fmode, 598 uint32_t __numsrc, 599 const struct in_addr *__slist) 600 __THROW; 601 602 603 /* Get source filter. */ 604 extern int getsourcefilter (int __s, uint32_t __interface_addr, 605 const struct sockaddr *__group, 606 socklen_t __grouplen, uint32_t *__fmode, 607 uint32_t *__numsrc, 608 struct sockaddr_storage *__slist) __THROW; 609 610 /* Set source filter. */ 611 extern int setsourcefilter (int __s, uint32_t __interface_addr, 612 const struct sockaddr *__group, 613 socklen_t __grouplen, uint32_t __fmode, 614 uint32_t __numsrc, 615 const struct sockaddr_storage *__slist) __THROW; 616 #endif /* use GNU */ 617 618 __END_DECLS 619 620 #endif /* netinet/in.h */ 621