1 /* Copyright (C) 1991-2001, 2003, 2004, 2006, 2007, 2008
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
20 #define _NETINET_IN_H 1
24 #include <sys/socket.h>
25 #include <bits/types.h>
30 /* Standard well-defined IP protocols. */
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
95 /* Type to represent a port. */
96 typedef uint16_t in_port_t;
98 /* Standard well-known ports. */
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. */
114 IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
116 IPPORT_FINGER = 79, /* Finger service. */
118 IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
121 IPPORT_EXECSERVER = 512, /* execd service. */
122 IPPORT_LOGINSERVER = 513, /* rlogind service. */
123 IPPORT_CMDSERVER = 514,
124 IPPORT_EFSSERVER = 520,
127 IPPORT_BIFFUDP = 512,
128 IPPORT_WHOSERVER = 513,
129 IPPORT_ROUTESERVER = 520,
131 /* Ports less than this value are reserved for privileged processes. */
132 IPPORT_RESERVED = 1024,
134 /* Ports greater this value are reserved for (non-privileged) servers. */
135 IPPORT_USERRESERVED = 5000
139 /* Internet address. */
140 typedef uint32_t in_addr_t;
147 /* Definitions of the bits in an Internet address integer.
149 On subnets, host and network parts are found according to
150 the subnet mask, not these masks. */
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
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
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)
169 #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
170 #define IN_MULTICAST(a) IN_CLASSD(a)
172 #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
173 #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
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)
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. */
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 */
196 #if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
202 uint8_t __u6_addr8[16];
203 #if defined __USE_MISC || defined __USE_GNU
204 uint16_t __u6_addr16[8];
205 uint32_t __u6_addr32[4];
208 #define s6_addr __in6_u.__u6_addr8
209 #if defined __USE_MISC || defined __USE_GNU
210 # define s6_addr16 __in6_u.__u6_addr16
211 # define s6_addr32 __in6_u.__u6_addr32
215 #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
216 #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
218 #define INET6_ADDRSTRLEN 46
221 #ifdef __UCLIBC_HAS_IPV6__
222 extern const struct in6_addr in6addr_any; /* :: */
223 extern const struct in6_addr in6addr_loopback; /* ::1 */
224 libc_hidden_proto(in6addr_loopback)
227 #define INET_ADDRSTRLEN 16
230 #if 1 /*def __UCLIBC_HAS_IPV4__*/
231 /* Structure describing an Internet socket address. */
234 __SOCKADDR_COMMON (sin_);
235 in_port_t sin_port; /* Port number. */
236 struct in_addr sin_addr; /* Internet address. */
238 /* Pad to size of `struct sockaddr'. */
239 unsigned char sin_zero[sizeof (struct sockaddr) -
240 __SOCKADDR_COMMON_SIZE -
242 sizeof (struct in_addr)];
246 #if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
247 /* Ditto, for IPv6. */
250 __SOCKADDR_COMMON (sin6_);
251 in_port_t sin6_port; /* Transport layer port # */
252 uint32_t sin6_flowinfo; /* IPv6 flow information */
253 struct in6_addr sin6_addr; /* IPv6 address */
254 uint32_t sin6_scope_id; /* IPv6 scope-id */
259 #if defined __USE_MISC || defined __USE_GNU
260 /* IPv4 multicast request. */
263 /* IP multicast address of group. */
264 struct in_addr imr_multiaddr;
266 /* Local IP address of interface. */
267 struct in_addr imr_interface;
270 struct ip_mreq_source
272 /* IP multicast address of group. */
273 struct in_addr imr_multiaddr;
275 /* IP address of source. */
276 struct in_addr imr_interface;
278 /* IP address of interface. */
279 struct in_addr imr_sourceaddr;
284 #if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
285 /* Likewise, for IPv6. */
288 /* IPv6 multicast address of group */
289 struct in6_addr ipv6mr_multiaddr;
291 /* local interface */
292 unsigned int ipv6mr_interface;
297 #if defined __USE_MISC || defined __USE_GNU
298 /* Multicast group request. */
301 /* Interface index. */
302 uint32_t gr_interface;
305 struct sockaddr_storage gr_group;
308 struct group_source_req
310 /* Interface index. */
311 uint32_t gsr_interface;
314 struct sockaddr_storage gsr_group;
316 /* Source address. */
317 struct sockaddr_storage gsr_source;
321 /* Full-state filter operations. */
324 /* IP multicast address of group. */
325 struct in_addr imsf_multiaddr;
327 /* Local IP address of interface. */
328 struct in_addr imsf_interface;
333 /* Number of source addresses. */
334 uint32_t imsf_numsrc;
335 /* Source addresses. */
336 struct in_addr imsf_slist[1];
339 #define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \
340 - sizeof (struct in_addr) \
341 + (numsrc) * sizeof (struct in_addr))
345 /* Interface index. */
346 uint32_t gf_interface;
349 struct sockaddr_storage gf_group;
354 /* Number of source addresses. */
356 /* Source addresses. */
357 struct sockaddr_storage gf_slist[1];
360 #define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \
361 - sizeof (struct sockaddr_storage) \
363 * sizeof (struct sockaddr_storage)))
367 /* Get system-specific definitions. */
370 /* Functions to convert between host and network byte order.
372 Please note that these functions normally take `unsigned long int' or
373 `unsigned short int' values as arguments and also return them. But
374 this was a short-sighted decision since on different systems the types
375 may have different representations but the values are always the same. */
377 extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__));
378 libc_hidden_proto(ntohl)
379 extern uint16_t ntohs (uint16_t __netshort)
380 __THROW __attribute__ ((__const__));
381 libc_hidden_proto(ntohs)
382 extern uint32_t htonl (uint32_t __hostlong)
383 __THROW __attribute__ ((__const__));
384 libc_hidden_proto(htonl)
385 extern uint16_t htons (uint16_t __hostshort)
386 __THROW __attribute__ ((__const__));
387 libc_hidden_proto(htons)
391 /* Get machine dependent optimized versions of byte swapping functions. */
392 #include <bits/byteswap.h>
395 /* We can optimize calls to the conversion functions. Either nothing has
396 to be done or we are using directly the byte-swapping functions which
397 often can be inlined. */
398 # if __BYTE_ORDER == __BIG_ENDIAN
399 /* The host byte order is the same as network byte order,
400 so these functions are all just identity. */
401 # define ntohl(x) (x)
402 # define ntohs(x) (x)
403 # define htonl(x) (x)
404 # define htons(x) (x)
406 # if __BYTE_ORDER == __LITTLE_ENDIAN
407 # define ntohl(x) __bswap_32 (x)
408 # define ntohs(x) __bswap_16 (x)
409 # define htonl(x) __bswap_32 (x)
410 # define htons(x) __bswap_16 (x)
415 #if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
416 #define IN6_IS_ADDR_UNSPECIFIED(a) \
417 (((__const uint32_t *) (a))[0] == 0 \
418 && ((__const uint32_t *) (a))[1] == 0 \
419 && ((__const uint32_t *) (a))[2] == 0 \
420 && ((__const uint32_t *) (a))[3] == 0)
422 #define IN6_IS_ADDR_LOOPBACK(a) \
423 (((__const uint32_t *) (a))[0] == 0 \
424 && ((__const uint32_t *) (a))[1] == 0 \
425 && ((__const uint32_t *) (a))[2] == 0 \
426 && ((__const uint32_t *) (a))[3] == htonl (1))
428 #define IN6_IS_ADDR_MULTICAST(a) (((__const uint8_t *) (a))[0] == 0xff)
430 #define IN6_IS_ADDR_LINKLOCAL(a) \
431 ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \
432 == htonl (0xfe800000))
434 #define IN6_IS_ADDR_SITELOCAL(a) \
435 ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \
436 == htonl (0xfec00000))
438 #define IN6_IS_ADDR_V4MAPPED(a) \
439 ((((__const uint32_t *) (a))[0] == 0) \
440 && (((__const uint32_t *) (a))[1] == 0) \
441 && (((__const uint32_t *) (a))[2] == htonl (0xffff)))
443 #define IN6_IS_ADDR_V4COMPAT(a) \
444 ((((__const uint32_t *) (a))[0] == 0) \
445 && (((__const uint32_t *) (a))[1] == 0) \
446 && (((__const uint32_t *) (a))[2] == 0) \
447 && (ntohl (((__const uint32_t *) (a))[3]) > 1))
449 #define IN6_ARE_ADDR_EQUAL(a,b) \
450 ((((__const uint32_t *) (a))[0] == ((__const uint32_t *) (b))[0]) \
451 && (((__const uint32_t *) (a))[1] == ((__const uint32_t *) (b))[1]) \
452 && (((__const uint32_t *) (a))[2] == ((__const uint32_t *) (b))[2]) \
453 && (((__const uint32_t *) (a))[3] == ((__const uint32_t *) (b))[3]))
456 #if defined __USE_MISC || defined __USE_GNU
457 /* Bind socket to a privileged IP port. */
458 extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
459 libc_hidden_proto(bindresvport)
461 # if 0 /*def __UCLIBC_HAS_IPV6__*/
462 /* The IPv6 version of this function. */
463 extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
469 #if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
470 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
471 (IN6_IS_ADDR_MULTICAST(a) \
472 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x1))
474 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
475 (IN6_IS_ADDR_MULTICAST(a) \
476 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x2))
478 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
479 (IN6_IS_ADDR_MULTICAST(a) \
480 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x5))
482 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
483 (IN6_IS_ADDR_MULTICAST(a) \
484 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x8))
486 #define IN6_IS_ADDR_MC_GLOBAL(a) \
487 (IN6_IS_ADDR_MULTICAST(a) \
488 && ((((__const uint8_t *) (a))[1] & 0xf) == 0xe))
493 # if defined __UCLIBC_HAS_IPV6__ || !defined __UCLIBC_STRICT_HEADERS__
494 /* IPv6 packet information. */
497 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
498 unsigned int ipi6_ifindex; /* send/recv interface index */
501 /* IPv6 MTU information. */
504 struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */
505 uint32_t ip6m_mtu; /* path MTU in host byte order */
510 /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */
511 extern int inet6_option_space (int __nbytes)
512 __THROW __attribute_deprecated__;
513 extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp,
514 int __type) __THROW __attribute_deprecated__;
515 extern int inet6_option_append (struct cmsghdr *__cmsg,
516 __const uint8_t *__typep, int __multx,
517 int __plusy) __THROW __attribute_deprecated__;
518 extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen,
519 int __multx, int __plusy)
520 __THROW __attribute_deprecated__;
521 extern int inet6_option_next (__const struct cmsghdr *__cmsg,
523 __THROW __attribute_deprecated__;
524 extern int inet6_option_find (__const struct cmsghdr *__cmsg,
525 uint8_t **__tptrp, int __type)
526 __THROW __attribute_deprecated__;
529 /* Hop-by-Hop and Destination Options Processing (RFC 3542). */
530 extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW;
531 extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset,
532 uint8_t __type, socklen_t __len, uint8_t __align,
533 void **__databufp) __THROW;
534 extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset)
536 extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val,
537 socklen_t __vallen) __THROW;
538 extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset,
539 uint8_t *__typep, socklen_t *__lenp,
540 void **__databufp) __THROW;
541 extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset,
542 uint8_t __type, socklen_t *__lenp,
543 void **__databufp) __THROW;
544 extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val,
545 socklen_t __vallen) __THROW;
548 /* Routing Header Option (RFC 3542). */
549 extern socklen_t inet6_rth_space (int __type, int __segments) __THROW;
550 extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type,
551 int __segments) __THROW;
552 extern int inet6_rth_add (void *__bp, __const struct in6_addr *__addr) __THROW;
553 extern int inet6_rth_reverse (__const void *__in, void *__out) __THROW;
554 extern int inet6_rth_segments (__const void *__bp) __THROW;
555 extern struct in6_addr *inet6_rth_getaddr (__const void *__bp, int __index)
562 /* Multicast source filter support. */
564 /* Get IPv4 source filter. */
565 extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr,
566 struct in_addr __group, uint32_t *__fmode,
567 uint32_t *__numsrc, struct in_addr *__slist)
570 /* Set IPv4 source filter. */
571 extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr,
572 struct in_addr __group, uint32_t __fmode,
574 __const struct in_addr *__slist)
578 /* Get source filter. */
579 extern int getsourcefilter (int __s, uint32_t __interface_addr,
580 __const struct sockaddr *__group,
581 socklen_t __grouplen, uint32_t *__fmode,
583 struct sockaddr_storage *__slist) __THROW;
585 /* Set source filter. */
586 extern int setsourcefilter (int __s, uint32_t __interface_addr,
587 __const struct sockaddr *__group,
588 socklen_t __grouplen, uint32_t __fmode,
590 __const struct sockaddr_storage *__slist) __THROW;
596 #endif /* netinet/in.h */