Ticket #918: in.h

File in.h, 12.3 KB (added by ajb.stxsl@…, 19 years ago)

The file /usr/include/netinet/in.h

Line 
1/* Copyright (C) 1991-1999, 2000, 2001 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
18
19#ifndef _NETINET_IN_H
20#define _NETINET_IN_H 1
21
22#include <features.h>
23#include <stdint.h>
24#include <bits/types.h>
25
26
27__BEGIN_DECLS
28
29/* Standard well-defined IP protocols. */
30enum
31 {
32 IPPROTO_IP = 0, /* Dummy protocol for TCP. */
33#define IPPROTO_IP IPPROTO_IP
34 IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
35#define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
36 IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
37#define IPPROTO_ICMP IPPROTO_ICMP
38 IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
39#define IPPROTO_IGMP IPPROTO_IGMP
40 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
41#define IPPROTO_IPIP IPPROTO_IPIP
42 IPPROTO_TCP = 6, /* Transmission Control Protocol. */
43#define IPPROTO_TCP IPPROTO_TCP
44 IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
45#define IPPROTO_EGP IPPROTO_EGP
46 IPPROTO_PUP = 12, /* PUP protocol. */
47#define IPPROTO_PUP IPPROTO_PUP
48 IPPROTO_UDP = 17, /* User Datagram Protocol. */
49#define IPPROTO_UDP IPPROTO_UDP
50 IPPROTO_IDP = 22, /* XNS IDP protocol. */
51#define IPPROTO_IDP IPPROTO_IDP
52 IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */
53#define IPPROTO_TP IPPROTO_TP
54 IPPROTO_IPV6 = 41, /* IPv6 header. */
55#define IPPROTO_IPV6 IPPROTO_IPV6
56 IPPROTO_ROUTING = 43, /* IPv6 routing header. */
57#define IPPROTO_ROUTING IPPROTO_ROUTING
58 IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
59#define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
60 IPPROTO_RSVP = 46, /* Reservation Protocol. */
61#define IPPROTO_RSVP IPPROTO_RSVP
62 IPPROTO_GRE = 47, /* General Routing Encapsulation. */
63#define IPPROTO_GRE IPPROTO_GRE
64 IPPROTO_ESP = 50, /* encapsulating security payload. */
65#define IPPROTO_ESP IPPROTO_ESP
66 IPPROTO_AH = 51, /* authentication header. */
67#define IPPROTO_AH IPPROTO_AH
68 IPPROTO_ICMPV6 = 58, /* ICMPv6. */
69#define IPPROTO_ICMPV6 IPPROTO_ICMPV6
70 IPPROTO_NONE = 59, /* IPv6 no next header. */
71#define IPPROTO_NONE IPPROTO_NONE
72 IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
73#define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
74 IPPROTO_MTP = 92, /* Multicast Transport Protocol. */
75#define IPPROTO_MTP IPPROTO_MTP
76 IPPROTO_ENCAP = 98, /* Encapsulation Header. */
77#define IPPROTO_ENCAP IPPROTO_ENCAP
78 IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
79#define IPPROTO_PIM IPPROTO_PIM
80 IPPROTO_COMP = 108, /* Compression Header Protocol. */
81#define IPPROTO_COMP IPPROTO_COMP
82 IPPROTO_RAW = 255, /* Raw IP packets. */
83#define IPPROTO_RAW IPPROTO_RAW
84 IPPROTO_MAX
85 };
86
87
88/* Type to represent a port. */
89typedef uint16_t in_port_t;
90
91/* Standard well-known ports. */
92enum
93 {
94 IPPORT_ECHO = 7, /* Echo service. */
95 IPPORT_DISCARD = 9, /* Discard transmissions service. */
96 IPPORT_SYSTAT = 11, /* System status service. */
97 IPPORT_DAYTIME = 13, /* Time of day service. */
98 IPPORT_NETSTAT = 15, /* Network status service. */
99 IPPORT_FTP = 21, /* File Transfer Protocol. */
100 IPPORT_TELNET = 23, /* Telnet protocol. */
101 IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
102 IPPORT_TIMESERVER = 37, /* Timeserver service. */
103 IPPORT_NAMESERVER = 42, /* Domain Name Service. */
104 IPPORT_WHOIS = 43, /* Internet Whois service. */
105 IPPORT_MTP = 57,
106
107 IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
108 IPPORT_RJE = 77,
109 IPPORT_FINGER = 79, /* Finger service. */
110 IPPORT_TTYLINK = 87,
111 IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
112
113
114 IPPORT_EXECSERVER = 512, /* execd service. */
115 IPPORT_LOGINSERVER = 513, /* rlogind service. */
116 IPPORT_CMDSERVER = 514,
117 IPPORT_EFSSERVER = 520,
118
119 /* UDP ports. */
120 IPPORT_BIFFUDP = 512,
121 IPPORT_WHOSERVER = 513,
122 IPPORT_ROUTESERVER = 520,
123
124 /* Ports less than this value are reserved for privileged processes. */
125 IPPORT_RESERVED = 1024,
126
127 /* Ports greater this value are reserved for (non-privileged) servers. */
128 IPPORT_USERRESERVED = 5000
129 };
130
131
132/* Internet address. */
133typedef uint32_t in_addr_t;
134struct in_addr
135 {
136 in_addr_t s_addr;
137 };
138
139
140/* Definitions of the bits in an Internet address integer.
141
142 On subnets, host and network parts are found according to
143 the subnet mask, not these masks. */
144
145#define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0)
146#define IN_CLASSA_NET 0xff000000
147#define IN_CLASSA_NSHIFT 24
148#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
149#define IN_CLASSA_MAX 128
150
151#define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
152#define IN_CLASSB_NET 0xffff0000
153#define IN_CLASSB_NSHIFT 16
154#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
155#define IN_CLASSB_MAX 65536
156
157#define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
158#define IN_CLASSC_NET 0xffffff00
159#define IN_CLASSC_NSHIFT 8
160#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
161
162#define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
163#define IN_MULTICAST(a) IN_CLASSD(a)
164
165#define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
166#define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
167
168/* Address to accept any incoming messages. */
169#define INADDR_ANY ((in_addr_t) 0x00000000)
170/* Address to send to all hosts. */
171#define INADDR_BROADCAST ((in_addr_t) 0xffffffff)
172/* Address indicating an error return. */
173#define INADDR_NONE ((in_addr_t) 0xffffffff)
174
175/* Network number for local host loopback. */
176#define IN_LOOPBACKNET 127
177/* Address to loopback in software to local host. */
178#ifndef INADDR_LOOPBACK
179# define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */
180#endif
181
182/* Defines for Multicast INADDR. */
183#define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */
184#define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */
185#define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */
186#define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
187
188
189/* IPv6 address */
190struct in6_addr
191 {
192 union
193 {
194 uint8_t u6_addr8[16];
195 uint16_t u6_addr16[8];
196 uint32_t u6_addr32[4];
197 } in6_u;
198#define s6_addr in6_u.u6_addr8
199#define s6_addr16 in6_u.u6_addr16
200#define s6_addr32 in6_u.u6_addr32
201 };
202
203extern const struct in6_addr in6addr_any; /* :: */
204extern const struct in6_addr in6addr_loopback; /* ::1 */
205#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
206#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
207
208#define INET_ADDRSTRLEN 16
209#define INET6_ADDRSTRLEN 46
210
211/* Get the definition of the macro to define the common sockaddr members. */
212#include <bits/socket.h>
213
214
215/* Structure describing an Internet socket address. */
216struct sockaddr_in
217 {
218 __SOCKADDR_COMMON (sin_);
219 in_port_t sin_port; /* Port number. */
220 struct in_addr sin_addr; /* Internet address. */
221
222 /* Pad to size of `struct sockaddr'. */
223 unsigned char sin_zero[sizeof (struct sockaddr) -
224 __SOCKADDR_COMMON_SIZE -
225 sizeof (in_port_t) -
226 sizeof (struct in_addr)];
227 };
228
229/* Ditto, for IPv6. */
230struct sockaddr_in6
231 {
232 __SOCKADDR_COMMON (sin6_);
233 in_port_t sin6_port; /* Transport layer port # */
234 uint32_t sin6_flowinfo; /* IPv6 flow information */
235 struct in6_addr sin6_addr; /* IPv6 address */
236 uint32_t sin6_scope_id; /* IPv6 scope-id */
237 };
238
239/* IPv6 multicast request. */
240struct ipv6_mreq
241 {
242 /* IPv6 multicast address of group */
243 struct in6_addr ipv6mr_multiaddr;
244
245 /* local interface */
246 unsigned int ipv6mr_interface;
247 };
248
249/* Get system-specific definitions. */
250#include <bits/in.h>
251
252/* Functions to convert between host and network byte order.
253
254 Please note that these functions normally take `unsigned long int' or
255 `unsigned short int' values as arguments and also return them. But
256 this was a short-sighted decision since on different systems the types
257 may have different representations but the values are always the same. */
258
259extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__));
260extern uint16_t ntohs (uint16_t __netshort)
261 __THROW __attribute__ ((__const__));
262extern uint32_t htonl (uint32_t __hostlong)
263 __THROW __attribute__ ((__const__));
264extern uint16_t htons (uint16_t __hostshort)
265 __THROW __attribute__ ((__const__));
266
267#include <endian.h>
268
269/* Get machine dependent optimized versions of byte swapping functions. */
270#include <bits/byteswap.h>
271
272#ifdef __OPTIMIZE__
273/* We can optimize calls to the conversion functions. Either nothing has
274 to be done or we are using directly the byte-swapping functions which
275 often can be inlined. */
276# if __BYTE_ORDER == __BIG_ENDIAN
277/* The host byte order is the same as network byte order,
278 so these functions are all just identity. */
279# define ntohl(x) (x)
280# define ntohs(x) (x)
281# define htonl(x) (x)
282# define htons(x) (x)
283# else
284# if __BYTE_ORDER == __LITTLE_ENDIAN
285# define ntohl(x) __bswap_32 (x)
286# define ntohs(x) __bswap_16 (x)
287# define htonl(x) __bswap_32 (x)
288# define htons(x) __bswap_16 (x)
289# endif
290# endif
291#endif
292
293#define IN6_IS_ADDR_UNSPECIFIED(a) \
294 (((__const uint32_t *) (a))[0] == 0 \
295 && ((__const uint32_t *) (a))[1] == 0 \
296 && ((__const uint32_t *) (a))[2] == 0 \
297 && ((__const uint32_t *) (a))[3] == 0)
298
299#define IN6_IS_ADDR_LOOPBACK(a) \
300 (((__const uint32_t *) (a))[0] == 0 \
301 && ((__const uint32_t *) (a))[1] == 0 \
302 && ((__const uint32_t *) (a))[2] == 0 \
303 && ((__const uint32_t *) (a))[3] == htonl (1))
304
305#define IN6_IS_ADDR_MULTICAST(a) (((__const uint8_t *) (a))[0] == 0xff)
306
307#define IN6_IS_ADDR_LINKLOCAL(a) \
308 ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \
309 == htonl (0xfe800000))
310
311#define IN6_IS_ADDR_SITELOCAL(a) \
312 ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \
313 == htonl (0xfec00000))
314
315#define IN6_IS_ADDR_V4MAPPED(a) \
316 ((((__const uint32_t *) (a))[0] == 0) \
317 && (((__const uint32_t *) (a))[1] == 0) \
318 && (((__const uint32_t *) (a))[2] == htonl (0xffff)))
319
320#define IN6_IS_ADDR_V4COMPAT(a) \
321 ((((__const uint32_t *) (a))[0] == 0) \
322 && (((__const uint32_t *) (a))[1] == 0) \
323 && (((__const uint32_t *) (a))[2] == 0) \
324 && (ntohl (((__const uint32_t *) (a))[3]) > 1))
325
326#define IN6_ARE_ADDR_EQUAL(a,b) \
327 ((((__const uint32_t *) (a))[0] == ((__const uint32_t *) (b))[0]) \
328 && (((__const uint32_t *) (a))[1] == ((__const uint32_t *) (b))[1]) \
329 && (((__const uint32_t *) (a))[2] == ((__const uint32_t *) (b))[2]) \
330 && (((__const uint32_t *) (a))[3] == ((__const uint32_t *) (b))[3]))
331
332/* Bind socket to a privileged IP port. */
333extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
334
335/* The IPv6 version of this function. */
336extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in)
337 __THROW;
338
339
340#define IN6_IS_ADDR_MC_NODELOCAL(a) \
341 (IN6_IS_ADDR_MULTICAST(a) \
342 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x1))
343
344#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
345 (IN6_IS_ADDR_MULTICAST(a) \
346 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x2))
347
348#define IN6_IS_ADDR_MC_SITELOCAL(a) \
349 (IN6_IS_ADDR_MULTICAST(a) \
350 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x5))
351
352#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
353 (IN6_IS_ADDR_MULTICAST(a) \
354 && ((((__const uint8_t *) (a))[1] & 0xf) == 0x8))
355
356#define IN6_IS_ADDR_MC_GLOBAL(a) \
357 (IN6_IS_ADDR_MULTICAST(a) \
358 && ((((__const uint8_t *) (a))[1] & 0xf) == 0xe))
359
360/* IPv6 packet information. */
361struct in6_pktinfo
362 {
363 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
364 unsigned int ipi6_ifindex; /* send/recv interface index */
365 };
366
367__END_DECLS
368
369#endif /* netinet/in.h */