1 /* Copyright (C) 1991-2001, 2003, 2004, 2006, 2007
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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #define _NETINET_IN_H 1
25 #include <sys/socket.h>
26 #include <bits/types.h>
31 /* Standard well-defined IP protocols. */
34 IPPROTO_IP = 0, /* Dummy protocol for TCP. */
35 #define IPPROTO_IP IPPROTO_IP
36 IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
37 #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
38 IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
39 #define IPPROTO_ICMP IPPROTO_ICMP
40 IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
41 #define IPPROTO_IGMP IPPROTO_IGMP
42 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
43 #define IPPROTO_IPIP IPPROTO_IPIP
44 IPPROTO_TCP = 6, /* Transmission Control Protocol. */
45 #define IPPROTO_TCP IPPROTO_TCP
46 IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
47 #define IPPROTO_EGP IPPROTO_EGP
48 IPPROTO_PUP = 12, /* PUP protocol. */
49 #define IPPROTO_PUP IPPROTO_PUP
50 IPPROTO_UDP = 17, /* User Datagram Protocol. */
51 #define IPPROTO_UDP IPPROTO_UDP
52 IPPROTO_IDP = 22, /* XNS IDP protocol. */
53 #define IPPROTO_IDP IPPROTO_IDP
54 IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */
55 #define IPPROTO_TP IPPROTO_TP
56 IPPROTO_IPV6 = 41, /* IPv6 header. */
57 #define IPPROTO_IPV6 IPPROTO_IPV6
58 IPPROTO_ROUTING = 43, /* IPv6 routing header. */
59 #define IPPROTO_ROUTING IPPROTO_ROUTING
60 IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
61 #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
62 IPPROTO_RSVP = 46, /* Reservation Protocol. */
63 #define IPPROTO_RSVP IPPROTO_RSVP
64 IPPROTO_GRE = 47, /* General Routing Encapsulation. */
65 #define IPPROTO_GRE IPPROTO_GRE
66 IPPROTO_ESP = 50, /* encapsulating security payload. */
67 #define IPPROTO_ESP IPPROTO_ESP
68 IPPROTO_AH = 51, /* authentication header. */
69 #define IPPROTO_AH IPPROTO_AH
70 IPPROTO_ICMPV6 = 58, /* ICMPv6. */
71 #define IPPROTO_ICMPV6 IPPROTO_ICMPV6
72 IPPROTO_NONE = 59, /* IPv6 no next header. */
73 #define IPPROTO_NONE IPPROTO_NONE
74 IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
75 #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
76 IPPROTO_MTP = 92, /* Multicast Transport Protocol. */
77 #define IPPROTO_MTP IPPROTO_MTP
78 IPPROTO_ENCAP = 98, /* Encapsulation Header. */
79 #define IPPROTO_ENCAP IPPROTO_ENCAP
80 IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
81 #define IPPROTO_PIM IPPROTO_PIM
82 IPPROTO_COMP = 108, /* Compression Header Protocol. */
83 #define IPPROTO_COMP IPPROTO_COMP
84 IPPROTO_SCTP = 132, /* Stream Control Transmission Protocol. */
85 #define IPPROTO_SCTP IPPROTO_SCTP
86 IPPROTO_RAW = 255, /* Raw IP packets. */
87 #define IPPROTO_RAW IPPROTO_RAW
92 /* Type to represent a port. */
93 typedef uint16_t in_port_t;
95 /* Standard well-known ports. */
98 IPPORT_ECHO = 7, /* Echo service. */
99 IPPORT_DISCARD = 9, /* Discard transmissions service. */
100 IPPORT_SYSTAT = 11, /* System status service. */
101 IPPORT_DAYTIME = 13, /* Time of day service. */
102 IPPORT_NETSTAT = 15, /* Network status service. */
103 IPPORT_FTP = 21, /* File Transfer Protocol. */
104 IPPORT_TELNET = 23, /* Telnet protocol. */
105 IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
106 IPPORT_TIMESERVER = 37, /* Timeserver service. */
107 IPPORT_NAMESERVER = 42, /* Domain Name Service. */
108 IPPORT_WHOIS = 43, /* Internet Whois service. */
111 IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
113 IPPORT_FINGER = 79, /* Finger service. */
115 IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
118 IPPORT_EXECSERVER = 512, /* execd service. */
119 IPPORT_LOGINSERVER = 513, /* rlogind service. */
120 IPPORT_CMDSERVER = 514,
121 IPPORT_EFSSERVER = 520,
124 IPPORT_BIFFUDP = 512,
125 IPPORT_WHOSERVER = 513,
126 IPPORT_ROUTESERVER = 520,
128 /* Ports less than this value are reserved for privileged processes. */
129 IPPORT_RESERVED = 1024,
131 /* Ports greater this value are reserved for (non-privileged) servers. */
132 IPPORT_USERRESERVED = 5000
136 /* Internet address. */
137 typedef uint32_t in_addr_t;
144 /* Definitions of the bits in an Internet address integer.
146 On subnets, host and network parts are found according to
147 the subnet mask, not these masks. */
149 #define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
150 #define IN_CLASSA_NET 0xff000000
151 #define IN_CLASSA_NSHIFT 24
152 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
153 #define IN_CLASSA_MAX 128
155 #define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
156 #define IN_CLASSB_NET 0xffff0000
157 #define IN_CLASSB_NSHIFT 16
158 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
159 #define IN_CLASSB_MAX 65536
161 #define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
162 #define IN_CLASSC_NET 0xffffff00
163 #define IN_CLASSC_NSHIFT 8
164 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
166 #define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
167 #define IN_MULTICAST(a) IN_CLASSD(a)
169 #define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
170 #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
172 /* Address to accept any incoming messages. */
173 #define INADDR_ANY ((in_addr_t) 0x00000000)
174 /* Address to send to all hosts. */
175 #define INADDR_BROADCAST ((in_addr_t) 0xffffffff)
176 /* Address indicating an error return. */
177 #define INADDR_NONE ((in_addr_t) 0xffffffff)
179 /* Network number for local host loopback. */
180 #define IN_LOOPBACKNET 127
181 /* Address to loopback in software to local host. */
182 #ifndef INADDR_LOOPBACK
183 # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */
186 /* Defines for Multicast INADDR. */
187 #define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */
188 #define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */
189 #define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */
190 #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
198 uint8_t u6_addr8[16];
199 uint16_t u6_addr16[8];
200 uint32_t u6_addr32[4];
202 #define s6_addr in6_u.u6_addr8
203 #define s6_addr16 in6_u.u6_addr16
204 #define s6_addr32 in6_u.u6_addr32
207 extern const struct in6_addr in6addr_any; /* :: */
208 extern const struct in6_addr in6addr_loopback; /* ::1 */
209 #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
210 #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
212 #define INET_ADDRSTRLEN 16
213 #define INET6_ADDRSTRLEN 46
215 /* Get the definition of the macro to define the common sockaddr members. */
216 #include <bits/socket.h>
219 #if 1 /* defined __UCLIBC_HAS_IPV4__ */
220 /* Structure describing an Internet socket address. */
223 __SOCKADDR_COMMON (sin_);
224 in_port_t sin_port; /* Port number. */
225 struct in_addr sin_addr; /* Internet address. */
227 /* Pad to size of `struct sockaddr'. */
228 unsigned char sin_zero[sizeof (struct sockaddr) -
229 __SOCKADDR_COMMON_SIZE -
231 sizeof (struct in_addr)];
235 /* Ditto, for IPv6. */
238 __SOCKADDR_COMMON (sin6_);
239 in_port_t sin6_port; /* Transport layer port # */
240 uint32_t sin6_flowinfo; /* IPv6 flow information */
241 struct in6_addr sin6_addr; /* IPv6 address */
242 uint32_t sin6_scope_id; /* IPv6 scope-id */
246 /* IPv4 multicast request. */
249 /* IP multicast address of group. */
250 struct in_addr imr_multiaddr;
252 /* Local IP address of interface. */
253 struct in_addr imr_interface;
256 struct ip_mreq_source
258 /* IP multicast address of group. */
259 struct in_addr imr_multiaddr;
261 /* IP address of source. */
262 struct in_addr imr_interface;
264 /* IP address of interface. */
265 struct in_addr imr_sourceaddr;
268 /* Likewise, for IPv6. */
271 /* IPv6 multicast address of group */
272 struct in6_addr ipv6mr_multiaddr;
274 /* local interface */
275 unsigned int ipv6mr_interface;
279 /* Multicast group request. */
282 /* Interface index. */
283 uint32_t gr_interface;
286 struct sockaddr_storage gr_group;
289 struct group_source_req
291 /* Interface index. */
292 uint32_t gsr_interface;
295 struct sockaddr_storage gsr_group;
297 /* Source address. */
298 struct sockaddr_storage gsr_source;
302 /* Full-state filter operations. */
305 /* IP multicast address of group. */
306 struct in_addr imsf_multiaddr;
308 /* Local IP address of interface. */
309 struct in_addr imsf_interface;
314 /* Number of source addresses. */
315 uint32_t imsf_numsrc;
316 /* Source addresses. */
317 struct in_addr imsf_slist[1];
320 #define IP_MSFILTER_SIZE(numsrc) (sizeof (struct ip_msfilter) \
321 - sizeof (struct in_addr) \
322 + (numsrc) * sizeof (struct in_addr))
326 /* Interface index. */
327 uint32_t gf_interface;
330 struct sockaddr_storage gf_group;
335 /* Number of source addresses. */
337 /* Source addresses. */
338 struct sockaddr_storage gf_slist[1];
341 #define GROUP_FILTER_SIZE(numsrc) (sizeof (struct group_filter) \
342 - sizeof (struct sockaddr_storage) \
344 * sizeof (struct sockaddr_storage)))
347 /* Get system-specific definitions. */
350 /* Functions to convert between host and network byte order.
352 Please note that these functions normally take `unsigned long int' or
353 `unsigned short int' values as arguments and also return them. But
354 this was a short-sighted decision since on different systems the types
355 may have different representations but the values are always the same. */
357 extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__));
358 extern uint16_t ntohs (uint16_t __netshort)
359 __THROW __attribute__ ((__const__));
360 extern uint32_t htonl (uint32_t __hostlong)
361 __THROW __attribute__ ((__const__));
362 extern uint16_t htons (uint16_t __hostshort)
363 __THROW __attribute__ ((__const__));
367 /* Get machine dependent optimized versions of byte swapping functions. */
368 #include <bits/byteswap.h>
371 /* We can optimize calls to the conversion functions. Either nothing has
372 to be done or we are using directly the byte-swapping functions which
373 often can be inlined. */
374 # if __BYTE_ORDER == __BIG_ENDIAN
375 /* The host byte order is the same as network byte order,
376 so these functions are all just identity. */
377 # define ntohl(x) (x)
378 # define ntohs(x) (x)
379 # define htonl(x) (x)
380 # define htons(x) (x)
382 # if __BYTE_ORDER == __LITTLE_ENDIAN
383 # define ntohl(x) __bswap_32 (x)
384 # define ntohs(x) __bswap_16 (x)
385 # define htonl(x) __bswap_32 (x)
386 # define htons(x) __bswap_16 (x)
391 #define IN6_IS_ADDR_UNSPECIFIED(a) \
392 (((__const uint32_t *) (a))[0] == 0 \
393 && ((__const uint32_t *) (a))[1] == 0 \
394 && ((__const uint32_t *) (a))[2] == 0 \
395 && ((__const uint32_t *) (a))[3] == 0)
397 #define IN6_IS_ADDR_LOOPBACK(a) \
398 (((__const uint32_t *) (a))[0] == 0 \
399 && ((__const uint32_t *) (a))[1] == 0 \
400 && ((__const uint32_t *) (a))[2] == 0 \
401 && ((__const uint32_t *) (a))[3] == htonl (1))
403 #define IN6_IS_ADDR_MULTICAST(a) (((__const uint8_t *) (a))[0] == 0xff)
405 #define IN6_IS_ADDR_LINKLOCAL(a) \
406 ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \
407 == htonl (0xfe800000))
409 #define IN6_IS_ADDR_SITELOCAL(a) \
410 ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \
411 == htonl (0xfec00000))
413 #define IN6_IS_ADDR_V4MAPPED(a) \
414 ((((__const uint32_t *) (a))[0] == 0) \
415 && (((__const uint32_t *) (a))[1] == 0) \
416 && (((__const uint32_t *) (a))[2] == htonl (0xffff)))
418 #define IN6_IS_ADDR_V4COMPAT(a) \
419 ((((__const uint32_t *) (a))[0] == 0) \
420 && (((__const uint32_t *) (a))[1] == 0) \
421 && (((__const uint32_t *) (a))[2] == 0) \
422 && (ntohl (((__const uint32_t *) (a))[3]) > 1))
424 #define IN6_ARE_ADDR_EQUAL(a,b) \
425 ((((__const uint32_t *) (a))[0] == ((__const uint32_t *) (b))[0]) \
426 && (((__const uint32_t *) (a))[1] == ((__const uint32_t *) (b))[1]) \
427 && (((__const uint32_t *) (a))[2] == ((__const uint32_t *) (b))[2]) \
428 && (((__const uint32_t *) (a))[3] == ((__const uint32_t *) (b))[3]))
430 /* Bind socket to a privileged IP port. */
431 extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
433 /* The IPv6 version of this function. */
434 extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
438 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
439 (IN6_IS_ADDR_MULTICAST(a) \
440 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x1))
442 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
443 (IN6_IS_ADDR_MULTICAST(a) \
444 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x2))
446 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
447 (IN6_IS_ADDR_MULTICAST(a) \
448 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x5))
450 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
451 (IN6_IS_ADDR_MULTICAST(a) \
452 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x8))
454 #define IN6_IS_ADDR_MC_GLOBAL(a) \
455 (IN6_IS_ADDR_MULTICAST(a) \
456 && ((((__const uint8_t *) (a))[1] & 0xf) == 0xe))
458 /* IPv6 packet information. */
461 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
462 unsigned int ipi6_ifindex; /* send/recv interface index */
465 /* IPv6 MTU information. */
468 struct sockaddr_in6 ip6m_addr; /* dst address including zone ID */
469 uint32_t ip6m_mtu; /* path MTU in host byte order */
473 #if 0 /*def __USE_GNU*/
474 /* Obsolete hop-by-hop and Destination Options Processing (RFC 2292). */
475 extern int inet6_option_space (int __nbytes)
476 __THROW __attribute_deprecated__;
477 extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp,
478 int __type) __THROW __attribute_deprecated__;
479 extern int inet6_option_append (struct cmsghdr *__cmsg,
480 __const uint8_t *__typep, int __multx,
481 int __plusy) __THROW __attribute_deprecated__;
482 extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen,
483 int __multx, int __plusy)
484 __THROW __attribute_deprecated__;
485 extern int inet6_option_next (__const struct cmsghdr *__cmsg,
487 __THROW __attribute_deprecated__;
488 extern int inet6_option_find (__const struct cmsghdr *__cmsg,
489 uint8_t **__tptrp, int __type)
490 __THROW __attribute_deprecated__;
493 /* Hop-by-Hop and Destination Options Processing (RFC 3542). */
494 extern int inet6_opt_init (void *__extbuf, socklen_t __extlen) __THROW;
495 extern int inet6_opt_append (void *__extbuf, socklen_t __extlen, int __offset,
496 uint8_t __type, socklen_t __len, uint8_t __align,
497 void **__databufp) __THROW;
498 extern int inet6_opt_finish (void *__extbuf, socklen_t __extlen, int __offset)
500 extern int inet6_opt_set_val (void *__databuf, int __offset, void *__val,
501 socklen_t __vallen) __THROW;
502 extern int inet6_opt_next (void *__extbuf, socklen_t __extlen, int __offset,
503 uint8_t *__typep, socklen_t *__lenp,
504 void **__databufp) __THROW;
505 extern int inet6_opt_find (void *__extbuf, socklen_t __extlen, int __offset,
506 uint8_t __type, socklen_t *__lenp,
507 void **__databufp) __THROW;
508 extern int inet6_opt_get_val (void *__databuf, int __offset, void *__val,
509 socklen_t __vallen) __THROW;
512 /* Routing Header Option (RFC 3542). */
513 extern socklen_t inet6_rth_space (int __type, int __segments) __THROW;
514 extern void *inet6_rth_init (void *__bp, socklen_t __bp_len, int __type,
515 int __segments) __THROW;
516 extern int inet6_rth_add (void *__bp, __const struct in6_addr *__addr) __THROW;
517 extern int inet6_rth_reverse (__const void *__in, void *__out) __THROW;
518 extern int inet6_rth_segments (__const void *__bp) __THROW;
519 extern struct in6_addr *inet6_rth_getaddr (__const void *__bp, int __index)
523 /* Multicast source filter support. */
525 /* Get IPv4 source filter. */
526 extern int getipv4sourcefilter (int __s, struct in_addr __interface_addr,
527 struct in_addr __group, uint32_t *__fmode,
528 uint32_t *__numsrc, struct in_addr *__slist)
531 /* Set IPv4 source filter. */
532 extern int setipv4sourcefilter (int __s, struct in_addr __interface_addr,
533 struct in_addr __group, uint32_t __fmode,
535 __const struct in_addr *__slist)
539 /* Get source filter. */
540 extern int getsourcefilter (int __s, uint32_t __interface_addr,
541 __const struct sockaddr *__group,
542 socklen_t __grouplen, uint32_t *__fmode,
544 struct sockaddr_storage *__slist) __THROW;
546 /* Set source filter. */
547 extern int setsourcefilter (int __s, uint32_t __interface_addr,
548 __const struct sockaddr *__group,
549 socklen_t __grouplen, uint32_t __fmode,
551 __const struct sockaddr_storage *__slist) __THROW;
556 #endif /* netinet/in.h */